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- for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
- return arr2;
- }
- function _createForOfIteratorHelperLoose(o, allowArrayLike) {
- var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"];
- if (it) return (it = it.call(o)).next.bind(it);
- if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
- if (it) o = it;
- var i = 0;
- return function () {
- if (i >= o.length) return {
- done: true
- };
- return {
- done: false,
- value: o[i++]
- };
- };
- }
- throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
- }
-
- function getDefaultExportFromCjs (x) {
- return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
- }
-
- var urlToolkit = {exports: {}};
-
- (function (module, exports) {
- // see https://tools.ietf.org/html/rfc1808
-
- (function (root) {
- var URL_REGEX =
- /^(?=((?:[a-zA-Z0-9+\-.]+:)?))\1(?=((?:\/\/[^\/?#]*)?))\2(?=((?:(?:[^?#\/]*\/)*[^;?#\/]*)?))\3((?:;[^?#]*)?)(\?[^#]*)?(#[^]*)?$/;
- var FIRST_SEGMENT_REGEX = /^(?=([^\/?#]*))\1([^]*)$/;
- var SLASH_DOT_REGEX = /(?:\/|^)\.(?=\/)/g;
- var SLASH_DOT_DOT_REGEX = /(?:\/|^)\.\.\/(?!\.\.\/)[^\/]*(?=\/)/g;
-
- var URLToolkit = {
- // If opts.alwaysNormalize is true then the path will always be normalized even when it starts with / or //
- // E.g
- // With opts.alwaysNormalize = false (default, spec compliant)
- // http://a.com/b/cd + /e/f/../g => http://a.com/e/f/../g
- // With opts.alwaysNormalize = true (not spec compliant)
- // http://a.com/b/cd + /e/f/../g => http://a.com/e/g
- buildAbsoluteURL: function (baseURL, relativeURL, opts) {
- opts = opts || {};
- // remove any remaining space and CRLF
- baseURL = baseURL.trim();
- relativeURL = relativeURL.trim();
- if (!relativeURL) {
- // 2a) If the embedded URL is entirely empty, it inherits the
- // entire base URL (i.e., is set equal to the base URL)
- // and we are done.
- if (!opts.alwaysNormalize) {
- return baseURL;
- }
- var basePartsForNormalise = URLToolkit.parseURL(baseURL);
- if (!basePartsForNormalise) {
- throw new Error('Error trying to parse base URL.');
- }
- basePartsForNormalise.path = URLToolkit.normalizePath(
- basePartsForNormalise.path
- );
- return URLToolkit.buildURLFromParts(basePartsForNormalise);
- }
- var relativeParts = URLToolkit.parseURL(relativeURL);
- if (!relativeParts) {
- throw new Error('Error trying to parse relative URL.');
- }
- if (relativeParts.scheme) {
- // 2b) If the embedded URL starts with a scheme name, it is
- // interpreted as an absolute URL and we are done.
- if (!opts.alwaysNormalize) {
- return relativeURL;
- }
- relativeParts.path = URLToolkit.normalizePath(relativeParts.path);
- return URLToolkit.buildURLFromParts(relativeParts);
- }
- var baseParts = URLToolkit.parseURL(baseURL);
- if (!baseParts) {
- throw new Error('Error trying to parse base URL.');
- }
- if (!baseParts.netLoc && baseParts.path && baseParts.path[0] !== '/') {
- // If netLoc missing and path doesn't start with '/', assume everthing before the first '/' is the netLoc
- // This causes 'example.com/a' to be handled as '//example.com/a' instead of '/example.com/a'
- var pathParts = FIRST_SEGMENT_REGEX.exec(baseParts.path);
- baseParts.netLoc = pathParts[1];
- baseParts.path = pathParts[2];
- }
- if (baseParts.netLoc && !baseParts.path) {
- baseParts.path = '/';
- }
- var builtParts = {
- // 2c) Otherwise, the embedded URL inherits the scheme of
- // the base URL.
- scheme: baseParts.scheme,
- netLoc: relativeParts.netLoc,
- path: null,
- params: relativeParts.params,
- query: relativeParts.query,
- fragment: relativeParts.fragment,
- };
- if (!relativeParts.netLoc) {
- // 3) If the embedded URL's is non-empty, we skip to
- // Step 7. Otherwise, the embedded URL inherits the
- // (if any) of the base URL.
- builtParts.netLoc = baseParts.netLoc;
- // 4) If the embedded URL path is preceded by a slash "/", the
- // path is not relative and we skip to Step 7.
- if (relativeParts.path[0] !== '/') {
- if (!relativeParts.path) {
- // 5) If the embedded URL path is empty (and not preceded by a
- // slash), then the embedded URL inherits the base URL path
- builtParts.path = baseParts.path;
- // 5a) if the embedded URL's is non-empty, we skip to
- // step 7; otherwise, it inherits the of the base
- // URL (if any) and
- if (!relativeParts.params) {
- builtParts.params = baseParts.params;
- // 5b) if the embedded URL's is non-empty, we skip to
- // step 7; otherwise, it inherits the of the base
- // URL (if any) and we skip to step 7.
- if (!relativeParts.query) {
- builtParts.query = baseParts.query;
- }
- }
- } else {
- // 6) The last segment of the base URL's path (anything
- // following the rightmost slash "/", or the entire path if no
- // slash is present) is removed and the embedded URL's path is
- // appended in its place.
- var baseURLPath = baseParts.path;
- var newPath =
- baseURLPath.substring(0, baseURLPath.lastIndexOf('/') + 1) +
- relativeParts.path;
- builtParts.path = URLToolkit.normalizePath(newPath);
- }
- }
- }
- if (builtParts.path === null) {
- builtParts.path = opts.alwaysNormalize
- ? URLToolkit.normalizePath(relativeParts.path)
- : relativeParts.path;
- }
- return URLToolkit.buildURLFromParts(builtParts);
- },
- parseURL: function (url) {
- var parts = URL_REGEX.exec(url);
- if (!parts) {
- return null;
- }
- return {
- scheme: parts[1] || '',
- netLoc: parts[2] || '',
- path: parts[3] || '',
- params: parts[4] || '',
- query: parts[5] || '',
- fragment: parts[6] || '',
- };
- },
- normalizePath: function (path) {
- // The following operations are
- // then applied, in order, to the new path:
- // 6a) All occurrences of "./", where "." is a complete path
- // segment, are removed.
- // 6b) If the path ends with "." as a complete path segment,
- // that "." is removed.
- path = path.split('').reverse().join('').replace(SLASH_DOT_REGEX, '');
- // 6c) All occurrences of "/../", where is a
- // complete path segment not equal to "..", are removed.
- // Removal of these path segments is performed iteratively,
- // removing the leftmost matching pattern on each iteration,
- // until no matching pattern remains.
- // 6d) If the path ends with "/..", where is a
- // complete path segment not equal to "..", that
- // "/.." is removed.
- while (
- path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, '')).length
- ) {}
- return path.split('').reverse().join('');
- },
- buildURLFromParts: function (parts) {
- return (
- parts.scheme +
- parts.netLoc +
- parts.path +
- parts.params +
- parts.query +
- parts.fragment
- );
- },
- };
-
- module.exports = URLToolkit;
- })();
- } (urlToolkit));
-
- var urlToolkitExports = urlToolkit.exports;
-
- // https://caniuse.com/mdn-javascript_builtins_number_isfinite
- var isFiniteNumber = Number.isFinite || function (value) {
- return typeof value === 'number' && isFinite(value);
- };
-
- // https://caniuse.com/mdn-javascript_builtins_number_issafeinteger
- var isSafeInteger = Number.isSafeInteger || function (value) {
- return typeof value === 'number' && Math.abs(value) <= MAX_SAFE_INTEGER;
- };
- var MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;
-
- var Events = /*#__PURE__*/function (Events) {
- Events["MEDIA_ATTACHING"] = "hlsMediaAttaching";
- Events["MEDIA_ATTACHED"] = "hlsMediaAttached";
- Events["MEDIA_DETACHING"] = "hlsMediaDetaching";
- Events["MEDIA_DETACHED"] = "hlsMediaDetached";
- Events["BUFFER_RESET"] = "hlsBufferReset";
- Events["BUFFER_CODECS"] = "hlsBufferCodecs";
- Events["BUFFER_CREATED"] = "hlsBufferCreated";
- Events["BUFFER_APPENDING"] = "hlsBufferAppending";
- Events["BUFFER_APPENDED"] = "hlsBufferAppended";
- Events["BUFFER_EOS"] = "hlsBufferEos";
- Events["BUFFER_FLUSHING"] = "hlsBufferFlushing";
- Events["BUFFER_FLUSHED"] = "hlsBufferFlushed";
- Events["MANIFEST_LOADING"] = "hlsManifestLoading";
- Events["MANIFEST_LOADED"] = "hlsManifestLoaded";
- Events["MANIFEST_PARSED"] = "hlsManifestParsed";
- Events["LEVEL_SWITCHING"] = "hlsLevelSwitching";
- Events["LEVEL_SWITCHED"] = "hlsLevelSwitched";
- Events["LEVEL_LOADING"] = "hlsLevelLoading";
- Events["LEVEL_LOADED"] = "hlsLevelLoaded";
- Events["LEVEL_UPDATED"] = "hlsLevelUpdated";
- Events["LEVEL_PTS_UPDATED"] = "hlsLevelPtsUpdated";
- Events["LEVELS_UPDATED"] = "hlsLevelsUpdated";
- Events["AUDIO_TRACKS_UPDATED"] = "hlsAudioTracksUpdated";
- Events["AUDIO_TRACK_SWITCHING"] = "hlsAudioTrackSwitching";
- Events["AUDIO_TRACK_SWITCHED"] = "hlsAudioTrackSwitched";
- Events["AUDIO_TRACK_LOADING"] = "hlsAudioTrackLoading";
- Events["AUDIO_TRACK_LOADED"] = "hlsAudioTrackLoaded";
- Events["SUBTITLE_TRACKS_UPDATED"] = "hlsSubtitleTracksUpdated";
- Events["SUBTITLE_TRACKS_CLEARED"] = "hlsSubtitleTracksCleared";
- Events["SUBTITLE_TRACK_SWITCH"] = "hlsSubtitleTrackSwitch";
- Events["SUBTITLE_TRACK_LOADING"] = "hlsSubtitleTrackLoading";
- Events["SUBTITLE_TRACK_LOADED"] = "hlsSubtitleTrackLoaded";
- Events["SUBTITLE_FRAG_PROCESSED"] = "hlsSubtitleFragProcessed";
- Events["CUES_PARSED"] = "hlsCuesParsed";
- Events["NON_NATIVE_TEXT_TRACKS_FOUND"] = "hlsNonNativeTextTracksFound";
- Events["INIT_PTS_FOUND"] = "hlsInitPtsFound";
- Events["FRAG_LOADING"] = "hlsFragLoading";
- Events["FRAG_LOAD_EMERGENCY_ABORTED"] = "hlsFragLoadEmergencyAborted";
- Events["FRAG_LOADED"] = "hlsFragLoaded";
- Events["FRAG_DECRYPTED"] = "hlsFragDecrypted";
- Events["FRAG_PARSING_INIT_SEGMENT"] = "hlsFragParsingInitSegment";
- Events["FRAG_PARSING_USERDATA"] = "hlsFragParsingUserdata";
- Events["FRAG_PARSING_METADATA"] = "hlsFragParsingMetadata";
- Events["FRAG_PARSED"] = "hlsFragParsed";
- Events["FRAG_BUFFERED"] = "hlsFragBuffered";
- Events["FRAG_CHANGED"] = "hlsFragChanged";
- Events["FPS_DROP"] = "hlsFpsDrop";
- Events["FPS_DROP_LEVEL_CAPPING"] = "hlsFpsDropLevelCapping";
- Events["MAX_AUTO_LEVEL_UPDATED"] = "hlsMaxAutoLevelUpdated";
- Events["ERROR"] = "hlsError";
- Events["DESTROYING"] = "hlsDestroying";
- Events["KEY_LOADING"] = "hlsKeyLoading";
- Events["KEY_LOADED"] = "hlsKeyLoaded";
- Events["LIVE_BACK_BUFFER_REACHED"] = "hlsLiveBackBufferReached";
- Events["BACK_BUFFER_REACHED"] = "hlsBackBufferReached";
- Events["STEERING_MANIFEST_LOADED"] = "hlsSteeringManifestLoaded";
- return Events;
- }({});
-
- /**
- * Defines each Event type and payload by Event name. Used in {@link hls.js#HlsEventEmitter} to strongly type the event listener API.
- */
-
- var ErrorTypes = /*#__PURE__*/function (ErrorTypes) {
- ErrorTypes["NETWORK_ERROR"] = "networkError";
- ErrorTypes["MEDIA_ERROR"] = "mediaError";
- ErrorTypes["KEY_SYSTEM_ERROR"] = "keySystemError";
- ErrorTypes["MUX_ERROR"] = "muxError";
- ErrorTypes["OTHER_ERROR"] = "otherError";
- return ErrorTypes;
- }({});
- var ErrorDetails = /*#__PURE__*/function (ErrorDetails) {
- ErrorDetails["KEY_SYSTEM_NO_KEYS"] = "keySystemNoKeys";
- ErrorDetails["KEY_SYSTEM_NO_ACCESS"] = "keySystemNoAccess";
- ErrorDetails["KEY_SYSTEM_NO_SESSION"] = "keySystemNoSession";
- ErrorDetails["KEY_SYSTEM_NO_CONFIGURED_LICENSE"] = "keySystemNoConfiguredLicense";
- ErrorDetails["KEY_SYSTEM_LICENSE_REQUEST_FAILED"] = "keySystemLicenseRequestFailed";
- ErrorDetails["KEY_SYSTEM_SERVER_CERTIFICATE_REQUEST_FAILED"] = "keySystemServerCertificateRequestFailed";
- ErrorDetails["KEY_SYSTEM_SERVER_CERTIFICATE_UPDATE_FAILED"] = "keySystemServerCertificateUpdateFailed";
- ErrorDetails["KEY_SYSTEM_SESSION_UPDATE_FAILED"] = "keySystemSessionUpdateFailed";
- ErrorDetails["KEY_SYSTEM_STATUS_OUTPUT_RESTRICTED"] = "keySystemStatusOutputRestricted";
- ErrorDetails["KEY_SYSTEM_STATUS_INTERNAL_ERROR"] = "keySystemStatusInternalError";
- ErrorDetails["MANIFEST_LOAD_ERROR"] = "manifestLoadError";
- ErrorDetails["MANIFEST_LOAD_TIMEOUT"] = "manifestLoadTimeOut";
- ErrorDetails["MANIFEST_PARSING_ERROR"] = "manifestParsingError";
- ErrorDetails["MANIFEST_INCOMPATIBLE_CODECS_ERROR"] = "manifestIncompatibleCodecsError";
- ErrorDetails["LEVEL_EMPTY_ERROR"] = "levelEmptyError";
- ErrorDetails["LEVEL_LOAD_ERROR"] = "levelLoadError";
- ErrorDetails["LEVEL_LOAD_TIMEOUT"] = "levelLoadTimeOut";
- ErrorDetails["LEVEL_PARSING_ERROR"] = "levelParsingError";
- ErrorDetails["LEVEL_SWITCH_ERROR"] = "levelSwitchError";
- ErrorDetails["AUDIO_TRACK_LOAD_ERROR"] = "audioTrackLoadError";
- ErrorDetails["AUDIO_TRACK_LOAD_TIMEOUT"] = "audioTrackLoadTimeOut";
- ErrorDetails["SUBTITLE_LOAD_ERROR"] = "subtitleTrackLoadError";
- ErrorDetails["SUBTITLE_TRACK_LOAD_TIMEOUT"] = "subtitleTrackLoadTimeOut";
- ErrorDetails["FRAG_LOAD_ERROR"] = "fragLoadError";
- ErrorDetails["FRAG_LOAD_TIMEOUT"] = "fragLoadTimeOut";
- ErrorDetails["FRAG_DECRYPT_ERROR"] = "fragDecryptError";
- ErrorDetails["FRAG_PARSING_ERROR"] = "fragParsingError";
- ErrorDetails["FRAG_GAP"] = "fragGap";
- ErrorDetails["REMUX_ALLOC_ERROR"] = "remuxAllocError";
- ErrorDetails["KEY_LOAD_ERROR"] = "keyLoadError";
- ErrorDetails["KEY_LOAD_TIMEOUT"] = "keyLoadTimeOut";
- ErrorDetails["BUFFER_ADD_CODEC_ERROR"] = "bufferAddCodecError";
- ErrorDetails["BUFFER_INCOMPATIBLE_CODECS_ERROR"] = "bufferIncompatibleCodecsError";
- ErrorDetails["BUFFER_APPEND_ERROR"] = "bufferAppendError";
- ErrorDetails["BUFFER_APPENDING_ERROR"] = "bufferAppendingError";
- ErrorDetails["BUFFER_STALLED_ERROR"] = "bufferStalledError";
- ErrorDetails["BUFFER_FULL_ERROR"] = "bufferFullError";
- ErrorDetails["BUFFER_SEEK_OVER_HOLE"] = "bufferSeekOverHole";
- ErrorDetails["BUFFER_NUDGE_ON_STALL"] = "bufferNudgeOnStall";
- ErrorDetails["INTERNAL_EXCEPTION"] = "internalException";
- ErrorDetails["INTERNAL_ABORTED"] = "aborted";
- ErrorDetails["UNKNOWN"] = "unknown";
- return ErrorDetails;
- }({});
-
- var noop = function noop() {};
- var fakeLogger = {
- trace: noop,
- debug: noop,
- log: noop,
- warn: noop,
- info: noop,
- error: noop
- };
- var exportedLogger = fakeLogger;
-
- // let lastCallTime;
- // function formatMsgWithTimeInfo(type, msg) {
- // const now = Date.now();
- // const diff = lastCallTime ? '+' + (now - lastCallTime) : '0';
- // lastCallTime = now;
- // msg = (new Date(now)).toISOString() + ' | [' + type + '] > ' + msg + ' ( ' + diff + ' ms )';
- // return msg;
- // }
-
- function consolePrintFn(type) {
- var func = self.console[type];
- if (func) {
- return func.bind(self.console, "[" + type + "] >");
- }
- return noop;
- }
- function exportLoggerFunctions(debugConfig) {
- for (var _len = arguments.length, functions = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
- functions[_key - 1] = arguments[_key];
- }
- functions.forEach(function (type) {
- exportedLogger[type] = debugConfig[type] ? debugConfig[type].bind(debugConfig) : consolePrintFn(type);
- });
- }
- function enableLogs(debugConfig, id) {
- // check that console is available
- if (typeof console === 'object' && debugConfig === true || typeof debugConfig === 'object') {
- exportLoggerFunctions(debugConfig,
- // Remove out from list here to hard-disable a log-level
- // 'trace',
- 'debug', 'log', 'info', 'warn', 'error');
- // Some browsers don't allow to use bind on console object anyway
- // fallback to default if needed
- try {
- exportedLogger.log("Debug logs enabled for \"" + id + "\" in hls.js version " + "1.5.15");
- } catch (e) {
- exportedLogger = fakeLogger;
- }
- } else {
- exportedLogger = fakeLogger;
- }
- }
- var logger = exportedLogger;
-
- var DECIMAL_RESOLUTION_REGEX = /^(\d+)x(\d+)$/;
- var ATTR_LIST_REGEX = /(.+?)=(".*?"|.*?)(?:,|$)/g;
-
- // adapted from https://github.com/kanongil/node-m3u8parse/blob/master/attrlist.js
- var AttrList = /*#__PURE__*/function () {
- function AttrList(attrs) {
- if (typeof attrs === 'string') {
- attrs = AttrList.parseAttrList(attrs);
- }
- _extends(this, attrs);
- }
- var _proto = AttrList.prototype;
- _proto.decimalInteger = function decimalInteger(attrName) {
- var intValue = parseInt(this[attrName], 10);
- if (intValue > Number.MAX_SAFE_INTEGER) {
- return Infinity;
- }
- return intValue;
- };
- _proto.hexadecimalInteger = function hexadecimalInteger(attrName) {
- if (this[attrName]) {
- var stringValue = (this[attrName] || '0x').slice(2);
- stringValue = (stringValue.length & 1 ? '0' : '') + stringValue;
- var value = new Uint8Array(stringValue.length / 2);
- for (var i = 0; i < stringValue.length / 2; i++) {
- value[i] = parseInt(stringValue.slice(i * 2, i * 2 + 2), 16);
- }
- return value;
- } else {
- return null;
- }
- };
- _proto.hexadecimalIntegerAsNumber = function hexadecimalIntegerAsNumber(attrName) {
- var intValue = parseInt(this[attrName], 16);
- if (intValue > Number.MAX_SAFE_INTEGER) {
- return Infinity;
- }
- return intValue;
- };
- _proto.decimalFloatingPoint = function decimalFloatingPoint(attrName) {
- return parseFloat(this[attrName]);
- };
- _proto.optionalFloat = function optionalFloat(attrName, defaultValue) {
- var value = this[attrName];
- return value ? parseFloat(value) : defaultValue;
- };
- _proto.enumeratedString = function enumeratedString(attrName) {
- return this[attrName];
- };
- _proto.bool = function bool(attrName) {
- return this[attrName] === 'YES';
- };
- _proto.decimalResolution = function decimalResolution(attrName) {
- var res = DECIMAL_RESOLUTION_REGEX.exec(this[attrName]);
- if (res === null) {
- return undefined;
- }
- return {
- width: parseInt(res[1], 10),
- height: parseInt(res[2], 10)
- };
- };
- AttrList.parseAttrList = function parseAttrList(input) {
- var match;
- var attrs = {};
- var quote = '"';
- ATTR_LIST_REGEX.lastIndex = 0;
- while ((match = ATTR_LIST_REGEX.exec(input)) !== null) {
- var value = match[2];
- if (value.indexOf(quote) === 0 && value.lastIndexOf(quote) === value.length - 1) {
- value = value.slice(1, -1);
- }
- var name = match[1].trim();
- attrs[name] = value;
- }
- return attrs;
- };
- _createClass(AttrList, [{
- key: "clientAttrs",
- get: function get() {
- return Object.keys(this).filter(function (attr) {
- return attr.substring(0, 2) === 'X-';
- });
- }
- }]);
- return AttrList;
- }();
-
- // Avoid exporting const enum so that these values can be inlined
-
- function isDateRangeCueAttribute(attrName) {
- return attrName !== "ID" && attrName !== "CLASS" && attrName !== "START-DATE" && attrName !== "DURATION" && attrName !== "END-DATE" && attrName !== "END-ON-NEXT";
- }
- function isSCTE35Attribute(attrName) {
- return attrName === "SCTE35-OUT" || attrName === "SCTE35-IN";
- }
- var DateRange = /*#__PURE__*/function () {
- function DateRange(dateRangeAttr, dateRangeWithSameId) {
- this.attr = void 0;
- this._startDate = void 0;
- this._endDate = void 0;
- this._badValueForSameId = void 0;
- if (dateRangeWithSameId) {
- var previousAttr = dateRangeWithSameId.attr;
- for (var key in previousAttr) {
- if (Object.prototype.hasOwnProperty.call(dateRangeAttr, key) && dateRangeAttr[key] !== previousAttr[key]) {
- logger.warn("DATERANGE tag attribute: \"" + key + "\" does not match for tags with ID: \"" + dateRangeAttr.ID + "\"");
- this._badValueForSameId = key;
- break;
- }
- }
- // Merge DateRange tags with the same ID
- dateRangeAttr = _extends(new AttrList({}), previousAttr, dateRangeAttr);
- }
- this.attr = dateRangeAttr;
- this._startDate = new Date(dateRangeAttr["START-DATE"]);
- if ("END-DATE" in this.attr) {
- var endDate = new Date(this.attr["END-DATE"]);
- if (isFiniteNumber(endDate.getTime())) {
- this._endDate = endDate;
- }
- }
- }
- _createClass(DateRange, [{
- key: "id",
- get: function get() {
- return this.attr.ID;
- }
- }, {
- key: "class",
- get: function get() {
- return this.attr.CLASS;
- }
- }, {
- key: "startDate",
- get: function get() {
- return this._startDate;
- }
- }, {
- key: "endDate",
- get: function get() {
- if (this._endDate) {
- return this._endDate;
- }
- var duration = this.duration;
- if (duration !== null) {
- return new Date(this._startDate.getTime() + duration * 1000);
- }
- return null;
- }
- }, {
- key: "duration",
- get: function get() {
- if ("DURATION" in this.attr) {
- var duration = this.attr.decimalFloatingPoint("DURATION");
- if (isFiniteNumber(duration)) {
- return duration;
- }
- } else if (this._endDate) {
- return (this._endDate.getTime() - this._startDate.getTime()) / 1000;
- }
- return null;
- }
- }, {
- key: "plannedDuration",
- get: function get() {
- if ("PLANNED-DURATION" in this.attr) {
- return this.attr.decimalFloatingPoint("PLANNED-DURATION");
- }
- return null;
- }
- }, {
- key: "endOnNext",
- get: function get() {
- return this.attr.bool("END-ON-NEXT");
- }
- }, {
- key: "isValid",
- get: function get() {
- return !!this.id && !this._badValueForSameId && isFiniteNumber(this.startDate.getTime()) && (this.duration === null || this.duration >= 0) && (!this.endOnNext || !!this.class);
- }
- }]);
- return DateRange;
- }();
-
- var LoadStats = function LoadStats() {
- this.aborted = false;
- this.loaded = 0;
- this.retry = 0;
- this.total = 0;
- this.chunkCount = 0;
- this.bwEstimate = 0;
- this.loading = {
- start: 0,
- first: 0,
- end: 0
- };
- this.parsing = {
- start: 0,
- end: 0
- };
- this.buffering = {
- start: 0,
- first: 0,
- end: 0
- };
- };
-
- var ElementaryStreamTypes = {
- AUDIO: "audio",
- VIDEO: "video",
- AUDIOVIDEO: "audiovideo"
- };
- var BaseSegment = /*#__PURE__*/function () {
- function BaseSegment(baseurl) {
- var _this$elementaryStrea;
- this._byteRange = null;
- this._url = null;
- // baseurl is the URL to the playlist
- this.baseurl = void 0;
- // relurl is the portion of the URL that comes from inside the playlist.
- this.relurl = void 0;
- // Holds the types of data this fragment supports
- this.elementaryStreams = (_this$elementaryStrea = {}, _this$elementaryStrea[ElementaryStreamTypes.AUDIO] = null, _this$elementaryStrea[ElementaryStreamTypes.VIDEO] = null, _this$elementaryStrea[ElementaryStreamTypes.AUDIOVIDEO] = null, _this$elementaryStrea);
- this.baseurl = baseurl;
- }
-
- // setByteRange converts a EXT-X-BYTERANGE attribute into a two element array
- var _proto = BaseSegment.prototype;
- _proto.setByteRange = function setByteRange(value, previous) {
- var params = value.split('@', 2);
- var start;
- if (params.length === 1) {
- start = (previous == null ? void 0 : previous.byteRangeEndOffset) || 0;
- } else {
- start = parseInt(params[1]);
- }
- this._byteRange = [start, parseInt(params[0]) + start];
- };
- _createClass(BaseSegment, [{
- key: "byteRange",
- get: function get() {
- if (!this._byteRange) {
- return [];
- }
- return this._byteRange;
- }
- }, {
- key: "byteRangeStartOffset",
- get: function get() {
- return this.byteRange[0];
- }
- }, {
- key: "byteRangeEndOffset",
- get: function get() {
- return this.byteRange[1];
- }
- }, {
- key: "url",
- get: function get() {
- if (!this._url && this.baseurl && this.relurl) {
- this._url = urlToolkitExports.buildAbsoluteURL(this.baseurl, this.relurl, {
- alwaysNormalize: true
- });
- }
- return this._url || '';
- },
- set: function set(value) {
- this._url = value;
- }
- }]);
- return BaseSegment;
- }();
-
- /**
- * Object representing parsed data from an HLS Segment. Found in {@link hls.js#LevelDetails.fragments}.
- */
- var Fragment = /*#__PURE__*/function (_BaseSegment) {
- _inheritsLoose(Fragment, _BaseSegment);
- function Fragment(type, baseurl) {
- var _this;
- _this = _BaseSegment.call(this, baseurl) || this;
- _this._decryptdata = null;
- _this.rawProgramDateTime = null;
- _this.programDateTime = null;
- _this.tagList = [];
- // EXTINF has to be present for a m3u8 to be considered valid
- _this.duration = 0;
- // sn notates the sequence number for a segment, and if set to a string can be 'initSegment'
- _this.sn = 0;
- // levelkeys are the EXT-X-KEY tags that apply to this segment for decryption
- // core difference from the private field _decryptdata is the lack of the initialized IV
- // _decryptdata will set the IV for this segment based on the segment number in the fragment
- _this.levelkeys = void 0;
- // A string representing the fragment type
- _this.type = void 0;
- // A reference to the loader. Set while the fragment is loading, and removed afterwards. Used to abort fragment loading
- _this.loader = null;
- // A reference to the key loader. Set while the key is loading, and removed afterwards. Used to abort key loading
- _this.keyLoader = null;
- // The level/track index to which the fragment belongs
- _this.level = -1;
- // The continuity counter of the fragment
- _this.cc = 0;
- // The starting Presentation Time Stamp (PTS) of the fragment. Set after transmux complete.
- _this.startPTS = void 0;
- // The ending Presentation Time Stamp (PTS) of the fragment. Set after transmux complete.
- _this.endPTS = void 0;
- // The starting Decode Time Stamp (DTS) of the fragment. Set after transmux complete.
- _this.startDTS = void 0;
- // The ending Decode Time Stamp (DTS) of the fragment. Set after transmux complete.
- _this.endDTS = void 0;
- // The start time of the fragment, as listed in the manifest. Updated after transmux complete.
- _this.start = 0;
- // Set by `updateFragPTSDTS` in level-helper
- _this.deltaPTS = void 0;
- // The maximum starting Presentation Time Stamp (audio/video PTS) of the fragment. Set after transmux complete.
- _this.maxStartPTS = void 0;
- // The minimum ending Presentation Time Stamp (audio/video PTS) of the fragment. Set after transmux complete.
- _this.minEndPTS = void 0;
- // Load/parse timing information
- _this.stats = new LoadStats();
- // Init Segment bytes (unset for media segments)
- _this.data = void 0;
- // A flag indicating whether the segment was downloaded in order to test bitrate, and was not buffered
- _this.bitrateTest = false;
- // #EXTINF segment title
- _this.title = null;
- // The Media Initialization Section for this segment
- _this.initSegment = null;
- // Fragment is the last fragment in the media playlist
- _this.endList = void 0;
- // Fragment is marked by an EXT-X-GAP tag indicating that it does not contain media data and should not be loaded
- _this.gap = void 0;
- // Deprecated
- _this.urlId = 0;
- _this.type = type;
- return _this;
- }
- var _proto2 = Fragment.prototype;
- _proto2.setKeyFormat = function setKeyFormat(keyFormat) {
- if (this.levelkeys) {
- var _key = this.levelkeys[keyFormat];
- if (_key && !this._decryptdata) {
- this._decryptdata = _key.getDecryptData(this.sn);
- }
- }
- };
- _proto2.abortRequests = function abortRequests() {
- var _this$loader, _this$keyLoader;
- (_this$loader = this.loader) == null ? void 0 : _this$loader.abort();
- (_this$keyLoader = this.keyLoader) == null ? void 0 : _this$keyLoader.abort();
- };
- _proto2.setElementaryStreamInfo = function setElementaryStreamInfo(type, startPTS, endPTS, startDTS, endDTS, partial) {
- if (partial === void 0) {
- partial = false;
- }
- var elementaryStreams = this.elementaryStreams;
- var info = elementaryStreams[type];
- if (!info) {
- elementaryStreams[type] = {
- startPTS: startPTS,
- endPTS: endPTS,
- startDTS: startDTS,
- endDTS: endDTS,
- partial: partial
- };
- return;
- }
- info.startPTS = Math.min(info.startPTS, startPTS);
- info.endPTS = Math.max(info.endPTS, endPTS);
- info.startDTS = Math.min(info.startDTS, startDTS);
- info.endDTS = Math.max(info.endDTS, endDTS);
- };
- _proto2.clearElementaryStreamInfo = function clearElementaryStreamInfo() {
- var elementaryStreams = this.elementaryStreams;
- elementaryStreams[ElementaryStreamTypes.AUDIO] = null;
- elementaryStreams[ElementaryStreamTypes.VIDEO] = null;
- elementaryStreams[ElementaryStreamTypes.AUDIOVIDEO] = null;
- };
- _createClass(Fragment, [{
- key: "decryptdata",
- get: function get() {
- var levelkeys = this.levelkeys;
- if (!levelkeys && !this._decryptdata) {
- return null;
- }
- if (!this._decryptdata && this.levelkeys && !this.levelkeys.NONE) {
- var _key2 = this.levelkeys.identity;
- if (_key2) {
- this._decryptdata = _key2.getDecryptData(this.sn);
- } else {
- var keyFormats = Object.keys(this.levelkeys);
- if (keyFormats.length === 1) {
- return this._decryptdata = this.levelkeys[keyFormats[0]].getDecryptData(this.sn);
- }
- }
- }
- return this._decryptdata;
- }
- }, {
- key: "end",
- get: function get() {
- return this.start + this.duration;
- }
- }, {
- key: "endProgramDateTime",
- get: function get() {
- if (this.programDateTime === null) {
- return null;
- }
- if (!isFiniteNumber(this.programDateTime)) {
- return null;
- }
- var duration = !isFiniteNumber(this.duration) ? 0 : this.duration;
- return this.programDateTime + duration * 1000;
- }
- }, {
- key: "encrypted",
- get: function get() {
- var _this$_decryptdata;
- // At the m3u8-parser level we need to add support for manifest signalled keyformats
- // when we want the fragment to start reporting that it is encrypted.
- // Currently, keyFormat will only be set for identity keys
- if ((_this$_decryptdata = this._decryptdata) != null && _this$_decryptdata.encrypted) {
- return true;
- } else if (this.levelkeys) {
- var keyFormats = Object.keys(this.levelkeys);
- var len = keyFormats.length;
- if (len > 1 || len === 1 && this.levelkeys[keyFormats[0]].encrypted) {
- return true;
- }
- }
- return false;
- }
- }]);
- return Fragment;
- }(BaseSegment);
-
- /**
- * Object representing parsed data from an HLS Partial Segment. Found in {@link hls.js#LevelDetails.partList}.
- */
- var Part = /*#__PURE__*/function (_BaseSegment2) {
- _inheritsLoose(Part, _BaseSegment2);
- function Part(partAttrs, frag, baseurl, index, previous) {
- var _this2;
- _this2 = _BaseSegment2.call(this, baseurl) || this;
- _this2.fragOffset = 0;
- _this2.duration = 0;
- _this2.gap = false;
- _this2.independent = false;
- _this2.relurl = void 0;
- _this2.fragment = void 0;
- _this2.index = void 0;
- _this2.stats = new LoadStats();
- _this2.duration = partAttrs.decimalFloatingPoint('DURATION');
- _this2.gap = partAttrs.bool('GAP');
- _this2.independent = partAttrs.bool('INDEPENDENT');
- _this2.relurl = partAttrs.enumeratedString('URI');
- _this2.fragment = frag;
- _this2.index = index;
- var byteRange = partAttrs.enumeratedString('BYTERANGE');
- if (byteRange) {
- _this2.setByteRange(byteRange, previous);
- }
- if (previous) {
- _this2.fragOffset = previous.fragOffset + previous.duration;
- }
- return _this2;
- }
- _createClass(Part, [{
- key: "start",
- get: function get() {
- return this.fragment.start + this.fragOffset;
- }
- }, {
- key: "end",
- get: function get() {
- return this.start + this.duration;
- }
- }, {
- key: "loaded",
- get: function get() {
- var elementaryStreams = this.elementaryStreams;
- return !!(elementaryStreams.audio || elementaryStreams.video || elementaryStreams.audiovideo);
- }
- }]);
- return Part;
- }(BaseSegment);
-
- var DEFAULT_TARGET_DURATION = 10;
-
- /**
- * Object representing parsed data from an HLS Media Playlist. Found in {@link hls.js#Level.details}.
- */
- var LevelDetails = /*#__PURE__*/function () {
- function LevelDetails(baseUrl) {
- this.PTSKnown = false;
- this.alignedSliding = false;
- this.averagetargetduration = void 0;
- this.endCC = 0;
- this.endSN = 0;
- this.fragments = void 0;
- this.fragmentHint = void 0;
- this.partList = null;
- this.dateRanges = void 0;
- this.live = true;
- this.ageHeader = 0;
- this.advancedDateTime = void 0;
- this.updated = true;
- this.advanced = true;
- this.availabilityDelay = void 0;
- // Manifest reload synchronization
- this.misses = 0;
- this.startCC = 0;
- this.startSN = 0;
- this.startTimeOffset = null;
- this.targetduration = 0;
- this.totalduration = 0;
- this.type = null;
- this.url = void 0;
- this.m3u8 = '';
- this.version = null;
- this.canBlockReload = false;
- this.canSkipUntil = 0;
- this.canSkipDateRanges = false;
- this.skippedSegments = 0;
- this.recentlyRemovedDateranges = void 0;
- this.partHoldBack = 0;
- this.holdBack = 0;
- this.partTarget = 0;
- this.preloadHint = void 0;
- this.renditionReports = void 0;
- this.tuneInGoal = 0;
- this.deltaUpdateFailed = void 0;
- this.driftStartTime = 0;
- this.driftEndTime = 0;
- this.driftStart = 0;
- this.driftEnd = 0;
- this.encryptedFragments = void 0;
- this.playlistParsingError = null;
- this.variableList = null;
- this.hasVariableRefs = false;
- this.fragments = [];
- this.encryptedFragments = [];
- this.dateRanges = {};
- this.url = baseUrl;
- }
- var _proto = LevelDetails.prototype;
- _proto.reloaded = function reloaded(previous) {
- if (!previous) {
- this.advanced = true;
- this.updated = true;
- return;
- }
- var partSnDiff = this.lastPartSn - previous.lastPartSn;
- var partIndexDiff = this.lastPartIndex - previous.lastPartIndex;
- this.updated = this.endSN !== previous.endSN || !!partIndexDiff || !!partSnDiff || !this.live;
- this.advanced = this.endSN > previous.endSN || partSnDiff > 0 || partSnDiff === 0 && partIndexDiff > 0;
- if (this.updated || this.advanced) {
- this.misses = Math.floor(previous.misses * 0.6);
- } else {
- this.misses = previous.misses + 1;
- }
- this.availabilityDelay = previous.availabilityDelay;
- };
- _createClass(LevelDetails, [{
- key: "hasProgramDateTime",
- get: function get() {
- if (this.fragments.length) {
- return isFiniteNumber(this.fragments[this.fragments.length - 1].programDateTime);
- }
- return false;
- }
- }, {
- key: "levelTargetDuration",
- get: function get() {
- return this.averagetargetduration || this.targetduration || DEFAULT_TARGET_DURATION;
- }
- }, {
- key: "drift",
- get: function get() {
- var runTime = this.driftEndTime - this.driftStartTime;
- if (runTime > 0) {
- var runDuration = this.driftEnd - this.driftStart;
- return runDuration * 1000 / runTime;
- }
- return 1;
- }
- }, {
- key: "edge",
- get: function get() {
- return this.partEnd || this.fragmentEnd;
- }
- }, {
- key: "partEnd",
- get: function get() {
- var _this$partList;
- if ((_this$partList = this.partList) != null && _this$partList.length) {
- return this.partList[this.partList.length - 1].end;
- }
- return this.fragmentEnd;
- }
- }, {
- key: "fragmentEnd",
- get: function get() {
- var _this$fragments;
- if ((_this$fragments = this.fragments) != null && _this$fragments.length) {
- return this.fragments[this.fragments.length - 1].end;
- }
- return 0;
- }
- }, {
- key: "age",
- get: function get() {
- if (this.advancedDateTime) {
- return Math.max(Date.now() - this.advancedDateTime, 0) / 1000;
- }
- return 0;
- }
- }, {
- key: "lastPartIndex",
- get: function get() {
- var _this$partList2;
- if ((_this$partList2 = this.partList) != null && _this$partList2.length) {
- return this.partList[this.partList.length - 1].index;
- }
- return -1;
- }
- }, {
- key: "lastPartSn",
- get: function get() {
- var _this$partList3;
- if ((_this$partList3 = this.partList) != null && _this$partList3.length) {
- return this.partList[this.partList.length - 1].fragment.sn;
- }
- return this.endSN;
- }
- }]);
- return LevelDetails;
- }();
-
- function base64Decode(base64encodedStr) {
- return Uint8Array.from(atob(base64encodedStr), function (c) {
- return c.charCodeAt(0);
- });
- }
-
- function getKeyIdBytes(str) {
- var keyIdbytes = strToUtf8array(str).subarray(0, 16);
- var paddedkeyIdbytes = new Uint8Array(16);
- paddedkeyIdbytes.set(keyIdbytes, 16 - keyIdbytes.length);
- return paddedkeyIdbytes;
- }
- function changeEndianness(keyId) {
- var swap = function swap(array, from, to) {
- var cur = array[from];
- array[from] = array[to];
- array[to] = cur;
- };
- swap(keyId, 0, 3);
- swap(keyId, 1, 2);
- swap(keyId, 4, 5);
- swap(keyId, 6, 7);
- }
- function convertDataUriToArrayBytes(uri) {
- // data:[
- var colonsplit = uri.split(':');
- var keydata = null;
- if (colonsplit[0] === 'data' && colonsplit.length === 2) {
- var semicolonsplit = colonsplit[1].split(';');
- var commasplit = semicolonsplit[semicolonsplit.length - 1].split(',');
- if (commasplit.length === 2) {
- var isbase64 = commasplit[0] === 'base64';
- var data = commasplit[1];
- if (isbase64) {
- semicolonsplit.splice(-1, 1); // remove from processing
- keydata = base64Decode(data);
- } else {
- keydata = getKeyIdBytes(data);
- }
- }
- }
- return keydata;
- }
- function strToUtf8array(str) {
- return Uint8Array.from(unescape(encodeURIComponent(str)), function (c) {
- return c.charCodeAt(0);
- });
- }
-
- /** returns `undefined` is `self` is missing, e.g. in node */
- var optionalSelf = typeof self !== 'undefined' ? self : undefined;
-
- /**
- * @see https://developer.mozilla.org/en-US/docs/Web/API/Navigator/requestMediaKeySystemAccess
- */
- var KeySystems = {
- CLEARKEY: "org.w3.clearkey",
- FAIRPLAY: "com.apple.fps",
- PLAYREADY: "com.microsoft.playready",
- WIDEVINE: "com.widevine.alpha"
- };
-
- // Playlist #EXT-X-KEY KEYFORMAT values
- var KeySystemFormats = {
- CLEARKEY: "org.w3.clearkey",
- FAIRPLAY: "com.apple.streamingkeydelivery",
- PLAYREADY: "com.microsoft.playready",
- WIDEVINE: "urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"
- };
- function keySystemFormatToKeySystemDomain(format) {
- switch (format) {
- case KeySystemFormats.FAIRPLAY:
- return KeySystems.FAIRPLAY;
- case KeySystemFormats.PLAYREADY:
- return KeySystems.PLAYREADY;
- case KeySystemFormats.WIDEVINE:
- return KeySystems.WIDEVINE;
- case KeySystemFormats.CLEARKEY:
- return KeySystems.CLEARKEY;
- }
- }
-
- // System IDs for which we can extract a key ID from "encrypted" event PSSH
- var KeySystemIds = {
- CENC: "1077efecc0b24d02ace33c1e52e2fb4b",
- CLEARKEY: "e2719d58a985b3c9781ab030af78d30e",
- FAIRPLAY: "94ce86fb07ff4f43adb893d2fa968ca2",
- PLAYREADY: "9a04f07998404286ab92e65be0885f95",
- WIDEVINE: "edef8ba979d64acea3c827dcd51d21ed"
- };
- function keySystemIdToKeySystemDomain(systemId) {
- if (systemId === KeySystemIds.WIDEVINE) {
- return KeySystems.WIDEVINE;
- } else if (systemId === KeySystemIds.PLAYREADY) {
- return KeySystems.PLAYREADY;
- } else if (systemId === KeySystemIds.CENC || systemId === KeySystemIds.CLEARKEY) {
- return KeySystems.CLEARKEY;
- }
- }
- function keySystemDomainToKeySystemFormat(keySystem) {
- switch (keySystem) {
- case KeySystems.FAIRPLAY:
- return KeySystemFormats.FAIRPLAY;
- case KeySystems.PLAYREADY:
- return KeySystemFormats.PLAYREADY;
- case KeySystems.WIDEVINE:
- return KeySystemFormats.WIDEVINE;
- case KeySystems.CLEARKEY:
- return KeySystemFormats.CLEARKEY;
- }
- }
- function getKeySystemsForConfig(config) {
- var drmSystems = config.drmSystems,
- widevineLicenseUrl = config.widevineLicenseUrl;
- var keySystemsToAttempt = drmSystems ? [KeySystems.FAIRPLAY, KeySystems.WIDEVINE, KeySystems.PLAYREADY, KeySystems.CLEARKEY].filter(function (keySystem) {
- return !!drmSystems[keySystem];
- }) : [];
- if (!keySystemsToAttempt[KeySystems.WIDEVINE] && widevineLicenseUrl) {
- keySystemsToAttempt.push(KeySystems.WIDEVINE);
- }
- return keySystemsToAttempt;
- }
- var requestMediaKeySystemAccess = function (_optionalSelf$navigat) {
- if (optionalSelf != null && (_optionalSelf$navigat = optionalSelf.navigator) != null && _optionalSelf$navigat.requestMediaKeySystemAccess) {
- return self.navigator.requestMediaKeySystemAccess.bind(self.navigator);
- } else {
- return null;
- }
- }();
-
- /**
- * @see https://developer.mozilla.org/en-US/docs/Web/API/MediaKeySystemConfiguration
- */
- function getSupportedMediaKeySystemConfigurations(keySystem, audioCodecs, videoCodecs, drmSystemOptions) {
- var initDataTypes;
- switch (keySystem) {
- case KeySystems.FAIRPLAY:
- initDataTypes = ['cenc', 'sinf'];
- break;
- case KeySystems.WIDEVINE:
- case KeySystems.PLAYREADY:
- initDataTypes = ['cenc'];
- break;
- case KeySystems.CLEARKEY:
- initDataTypes = ['cenc', 'keyids'];
- break;
- default:
- throw new Error("Unknown key-system: " + keySystem);
- }
- return createMediaKeySystemConfigurations(initDataTypes, audioCodecs, videoCodecs, drmSystemOptions);
- }
- function createMediaKeySystemConfigurations(initDataTypes, audioCodecs, videoCodecs, drmSystemOptions) {
- var baseConfig = {
- initDataTypes: initDataTypes,
- persistentState: drmSystemOptions.persistentState || 'optional',
- distinctiveIdentifier: drmSystemOptions.distinctiveIdentifier || 'optional',
- sessionTypes: drmSystemOptions.sessionTypes || [drmSystemOptions.sessionType || 'temporary'],
- audioCapabilities: audioCodecs.map(function (codec) {
- return {
- contentType: "audio/mp4; codecs=\"" + codec + "\"",
- robustness: drmSystemOptions.audioRobustness || '',
- encryptionScheme: drmSystemOptions.audioEncryptionScheme || null
- };
- }),
- videoCapabilities: videoCodecs.map(function (codec) {
- return {
- contentType: "video/mp4; codecs=\"" + codec + "\"",
- robustness: drmSystemOptions.videoRobustness || '',
- encryptionScheme: drmSystemOptions.videoEncryptionScheme || null
- };
- })
- };
- return [baseConfig];
- }
-
- function sliceUint8(array, start, end) {
- // @ts-expect-error This polyfills IE11 usage of Uint8Array slice.
- // It always exists in the TypeScript definition so fails, but it fails at runtime on IE11.
- return Uint8Array.prototype.slice ? array.slice(start, end) : new Uint8Array(Array.prototype.slice.call(array, start, end));
- }
-
- // breaking up those two types in order to clarify what is happening in the decoding path.
-
- /**
- * Returns true if an ID3 header can be found at offset in data
- * @param data - The data to search
- * @param offset - The offset at which to start searching
- */
- var isHeader$2 = function isHeader(data, offset) {
- /*
- * http://id3.org/id3v2.3.0
- * [0] = 'I'
- * [1] = 'D'
- * [2] = '3'
- * [3,4] = {Version}
- * [5] = {Flags}
- * [6-9] = {ID3 Size}
- *
- * An ID3v2 tag can be detected with the following pattern:
- * $49 44 33 yy yy xx zz zz zz zz
- * Where yy is less than $FF, xx is the 'flags' byte and zz is less than $80
- */
- if (offset + 10 <= data.length) {
- // look for 'ID3' identifier
- if (data[offset] === 0x49 && data[offset + 1] === 0x44 && data[offset + 2] === 0x33) {
- // check version is within range
- if (data[offset + 3] < 0xff && data[offset + 4] < 0xff) {
- // check size is within range
- if (data[offset + 6] < 0x80 && data[offset + 7] < 0x80 && data[offset + 8] < 0x80 && data[offset + 9] < 0x80) {
- return true;
- }
- }
- }
- }
- return false;
- };
-
- /**
- * Returns true if an ID3 footer can be found at offset in data
- * @param data - The data to search
- * @param offset - The offset at which to start searching
- */
- var isFooter = function isFooter(data, offset) {
- /*
- * The footer is a copy of the header, but with a different identifier
- */
- if (offset + 10 <= data.length) {
- // look for '3DI' identifier
- if (data[offset] === 0x33 && data[offset + 1] === 0x44 && data[offset + 2] === 0x49) {
- // check version is within range
- if (data[offset + 3] < 0xff && data[offset + 4] < 0xff) {
- // check size is within range
- if (data[offset + 6] < 0x80 && data[offset + 7] < 0x80 && data[offset + 8] < 0x80 && data[offset + 9] < 0x80) {
- return true;
- }
- }
- }
- }
- return false;
- };
-
- /**
- * Returns any adjacent ID3 tags found in data starting at offset, as one block of data
- * @param data - The data to search in
- * @param offset - The offset at which to start searching
- * @returns the block of data containing any ID3 tags found
- * or *undefined* if no header is found at the starting offset
- */
- var getID3Data = function getID3Data(data, offset) {
- var front = offset;
- var length = 0;
- while (isHeader$2(data, offset)) {
- // ID3 header is 10 bytes
- length += 10;
- var size = readSize(data, offset + 6);
- length += size;
- if (isFooter(data, offset + 10)) {
- // ID3 footer is 10 bytes
- length += 10;
- }
- offset += length;
- }
- if (length > 0) {
- return data.subarray(front, front + length);
- }
- return undefined;
- };
- var readSize = function readSize(data, offset) {
- var size = 0;
- size = (data[offset] & 0x7f) << 21;
- size |= (data[offset + 1] & 0x7f) << 14;
- size |= (data[offset + 2] & 0x7f) << 7;
- size |= data[offset + 3] & 0x7f;
- return size;
- };
- var canParse$2 = function canParse(data, offset) {
- return isHeader$2(data, offset) && readSize(data, offset + 6) + 10 <= data.length - offset;
- };
-
- /**
- * Searches for the Elementary Stream timestamp found in the ID3 data chunk
- * @param data - Block of data containing one or more ID3 tags
- */
- var getTimeStamp = function getTimeStamp(data) {
- var frames = getID3Frames(data);
- for (var i = 0; i < frames.length; i++) {
- var frame = frames[i];
- if (isTimeStampFrame(frame)) {
- return readTimeStamp(frame);
- }
- }
- return undefined;
- };
-
- /**
- * Returns true if the ID3 frame is an Elementary Stream timestamp frame
- */
- var isTimeStampFrame = function isTimeStampFrame(frame) {
- return frame && frame.key === 'PRIV' && frame.info === 'com.apple.streaming.transportStreamTimestamp';
- };
- var getFrameData = function getFrameData(data) {
- /*
- Frame ID $xx xx xx xx (four characters)
- Size $xx xx xx xx
- Flags $xx xx
- */
- var type = String.fromCharCode(data[0], data[1], data[2], data[3]);
- var size = readSize(data, 4);
-
- // skip frame id, size, and flags
- var offset = 10;
- return {
- type: type,
- size: size,
- data: data.subarray(offset, offset + size)
- };
- };
-
- /**
- * Returns an array of ID3 frames found in all the ID3 tags in the id3Data
- * @param id3Data - The ID3 data containing one or more ID3 tags
- */
- var getID3Frames = function getID3Frames(id3Data) {
- var offset = 0;
- var frames = [];
- while (isHeader$2(id3Data, offset)) {
- var size = readSize(id3Data, offset + 6);
- // skip past ID3 header
- offset += 10;
- var end = offset + size;
- // loop through frames in the ID3 tag
- while (offset + 8 < end) {
- var frameData = getFrameData(id3Data.subarray(offset));
- var frame = decodeFrame(frameData);
- if (frame) {
- frames.push(frame);
- }
-
- // skip frame header and frame data
- offset += frameData.size + 10;
- }
- if (isFooter(id3Data, offset)) {
- offset += 10;
- }
- }
- return frames;
- };
- var decodeFrame = function decodeFrame(frame) {
- if (frame.type === 'PRIV') {
- return decodePrivFrame(frame);
- } else if (frame.type[0] === 'W') {
- return decodeURLFrame(frame);
- }
- return decodeTextFrame(frame);
- };
- var decodePrivFrame = function decodePrivFrame(frame) {
- /*
- Format: \0
- */
- if (frame.size < 2) {
- return undefined;
- }
- var owner = utf8ArrayToStr(frame.data, true);
- var privateData = new Uint8Array(frame.data.subarray(owner.length + 1));
- return {
- key: frame.type,
- info: owner,
- data: privateData.buffer
- };
- };
- var decodeTextFrame = function decodeTextFrame(frame) {
- if (frame.size < 2) {
- return undefined;
- }
- if (frame.type === 'TXXX') {
- /*
- Format:
- [0] = {Text Encoding}
- [1-?] = {Description}\0{Value}
- */
- var index = 1;
- var description = utf8ArrayToStr(frame.data.subarray(index), true);
- index += description.length + 1;
- var value = utf8ArrayToStr(frame.data.subarray(index));
- return {
- key: frame.type,
- info: description,
- data: value
- };
- }
- /*
- Format:
- [0] = {Text Encoding}
- [1-?] = {Value}
- */
- var text = utf8ArrayToStr(frame.data.subarray(1));
- return {
- key: frame.type,
- data: text
- };
- };
- var decodeURLFrame = function decodeURLFrame(frame) {
- if (frame.type === 'WXXX') {
- /*
- Format:
- [0] = {Text Encoding}
- [1-?] = {Description}\0{URL}
- */
- if (frame.size < 2) {
- return undefined;
- }
- var index = 1;
- var description = utf8ArrayToStr(frame.data.subarray(index), true);
- index += description.length + 1;
- var value = utf8ArrayToStr(frame.data.subarray(index));
- return {
- key: frame.type,
- info: description,
- data: value
- };
- }
- /*
- Format:
- [0-?] = {URL}
- */
- var url = utf8ArrayToStr(frame.data);
- return {
- key: frame.type,
- data: url
- };
- };
- var readTimeStamp = function readTimeStamp(timeStampFrame) {
- if (timeStampFrame.data.byteLength === 8) {
- var data = new Uint8Array(timeStampFrame.data);
- // timestamp is 33 bit expressed as a big-endian eight-octet number,
- // with the upper 31 bits set to zero.
- var pts33Bit = data[3] & 0x1;
- var timestamp = (data[4] << 23) + (data[5] << 15) + (data[6] << 7) + data[7];
- timestamp /= 45;
- if (pts33Bit) {
- timestamp += 47721858.84;
- } // 2^32 / 90
-
- return Math.round(timestamp);
- }
- return undefined;
- };
-
- // http://stackoverflow.com/questions/8936984/uint8array-to-string-in-javascript/22373197
- // http://www.onicos.com/staff/iz/amuse/javascript/expert/utf.txt
- /* utf.js - UTF-8 <=> UTF-16 convertion
- *
- * Copyright (C) 1999 Masanao Izumo
- * Version: 1.0
- * LastModified: Dec 25 1999
- * This library is free. You can redistribute it and/or modify it.
- */
- var utf8ArrayToStr = function utf8ArrayToStr(array, exitOnNull) {
- if (exitOnNull === void 0) {
- exitOnNull = false;
- }
- var decoder = getTextDecoder();
- if (decoder) {
- var decoded = decoder.decode(array);
- if (exitOnNull) {
- // grab up to the first null
- var idx = decoded.indexOf('\0');
- return idx !== -1 ? decoded.substring(0, idx) : decoded;
- }
-
- // remove any null characters
- return decoded.replace(/\0/g, '');
- }
- var len = array.length;
- var c;
- var char2;
- var char3;
- var out = '';
- var i = 0;
- while (i < len) {
- c = array[i++];
- if (c === 0x00 && exitOnNull) {
- return out;
- } else if (c === 0x00 || c === 0x03) {
- // If the character is 3 (END_OF_TEXT) or 0 (NULL) then skip it
- continue;
- }
- switch (c >> 4) {
- case 0:
- case 1:
- case 2:
- case 3:
- case 4:
- case 5:
- case 6:
- case 7:
- // 0xxxxxxx
- out += String.fromCharCode(c);
- break;
- case 12:
- case 13:
- // 110x xxxx 10xx xxxx
- char2 = array[i++];
- out += String.fromCharCode((c & 0x1f) << 6 | char2 & 0x3f);
- break;
- case 14:
- // 1110 xxxx 10xx xxxx 10xx xxxx
- char2 = array[i++];
- char3 = array[i++];
- out += String.fromCharCode((c & 0x0f) << 12 | (char2 & 0x3f) << 6 | (char3 & 0x3f) << 0);
- break;
- }
- }
- return out;
- };
- var decoder;
- function getTextDecoder() {
- // On Play Station 4, TextDecoder is defined but partially implemented.
- // Manual decoding option is preferable
- if (navigator.userAgent.includes('PlayStation 4')) {
- return;
- }
- if (!decoder && typeof self.TextDecoder !== 'undefined') {
- decoder = new self.TextDecoder('utf-8');
- }
- return decoder;
- }
-
- /**
- * hex dump helper class
- */
-
- var Hex = {
- hexDump: function hexDump(array) {
- var str = '';
- for (var i = 0; i < array.length; i++) {
- var h = array[i].toString(16);
- if (h.length < 2) {
- h = '0' + h;
- }
- str += h;
- }
- return str;
- }
- };
-
- var UINT32_MAX$1 = Math.pow(2, 32) - 1;
- var push = [].push;
-
- // We are using fixed track IDs for driving the MP4 remuxer
- // instead of following the TS PIDs.
- // There is no reason not to do this and some browsers/SourceBuffer-demuxers
- // may not like if there are TrackID "switches"
- // See https://github.com/video-dev/hls.js/issues/1331
- // Here we are mapping our internal track types to constant MP4 track IDs
- // With MSE currently one can only have one track of each, and we are muxing
- // whatever video/audio rendition in them.
- var RemuxerTrackIdConfig = {
- video: 1,
- audio: 2,
- id3: 3,
- text: 4
- };
- function bin2str(data) {
- return String.fromCharCode.apply(null, data);
- }
- function readUint16(buffer, offset) {
- var val = buffer[offset] << 8 | buffer[offset + 1];
- return val < 0 ? 65536 + val : val;
- }
- function readUint32(buffer, offset) {
- var val = readSint32(buffer, offset);
- return val < 0 ? 4294967296 + val : val;
- }
- function readUint64(buffer, offset) {
- var result = readUint32(buffer, offset);
- result *= Math.pow(2, 32);
- result += readUint32(buffer, offset + 4);
- return result;
- }
- function readSint32(buffer, offset) {
- return buffer[offset] << 24 | buffer[offset + 1] << 16 | buffer[offset + 2] << 8 | buffer[offset + 3];
- }
- function writeUint32(buffer, offset, value) {
- buffer[offset] = value >> 24;
- buffer[offset + 1] = value >> 16 & 0xff;
- buffer[offset + 2] = value >> 8 & 0xff;
- buffer[offset + 3] = value & 0xff;
- }
-
- // Find "moof" box
- function hasMoofData(data) {
- var end = data.byteLength;
- for (var i = 0; i < end;) {
- var size = readUint32(data, i);
- if (size > 8 && data[i + 4] === 0x6d && data[i + 5] === 0x6f && data[i + 6] === 0x6f && data[i + 7] === 0x66) {
- return true;
- }
- i = size > 1 ? i + size : end;
- }
- return false;
- }
-
- // Find the data for a box specified by its path
- function findBox(data, path) {
- var results = [];
- if (!path.length) {
- // short-circuit the search for empty paths
- return results;
- }
- var end = data.byteLength;
- for (var i = 0; i < end;) {
- var size = readUint32(data, i);
- var type = bin2str(data.subarray(i + 4, i + 8));
- var endbox = size > 1 ? i + size : end;
- if (type === path[0]) {
- if (path.length === 1) {
- // this is the end of the path and we've found the box we were
- // looking for
- results.push(data.subarray(i + 8, endbox));
- } else {
- // recursively search for the next box along the path
- var subresults = findBox(data.subarray(i + 8, endbox), path.slice(1));
- if (subresults.length) {
- push.apply(results, subresults);
- }
- }
- }
- i = endbox;
- }
-
- // we've finished searching all of data
- return results;
- }
- function parseSegmentIndex(sidx) {
- var references = [];
- var version = sidx[0];
-
- // set initial offset, we skip the reference ID (not needed)
- var index = 8;
- var timescale = readUint32(sidx, index);
- index += 4;
- var earliestPresentationTime = 0;
- var firstOffset = 0;
- if (version === 0) {
- earliestPresentationTime = readUint32(sidx, index);
- firstOffset = readUint32(sidx, index + 4);
- index += 8;
- } else {
- earliestPresentationTime = readUint64(sidx, index);
- firstOffset = readUint64(sidx, index + 8);
- index += 16;
- }
-
- // skip reserved
- index += 2;
- var startByte = sidx.length + firstOffset;
- var referencesCount = readUint16(sidx, index);
- index += 2;
- for (var i = 0; i < referencesCount; i++) {
- var referenceIndex = index;
- var referenceInfo = readUint32(sidx, referenceIndex);
- referenceIndex += 4;
- var referenceSize = referenceInfo & 0x7fffffff;
- var referenceType = (referenceInfo & 0x80000000) >>> 31;
- if (referenceType === 1) {
- logger.warn('SIDX has hierarchical references (not supported)');
- return null;
- }
- var subsegmentDuration = readUint32(sidx, referenceIndex);
- referenceIndex += 4;
- references.push({
- referenceSize: referenceSize,
- subsegmentDuration: subsegmentDuration,
- // unscaled
- info: {
- duration: subsegmentDuration / timescale,
- start: startByte,
- end: startByte + referenceSize - 1
- }
- });
- startByte += referenceSize;
-
- // Skipping 1 bit for |startsWithSap|, 3 bits for |sapType|, and 28 bits
- // for |sapDelta|.
- referenceIndex += 4;
-
- // skip to next ref
- index = referenceIndex;
- }
- return {
- earliestPresentationTime: earliestPresentationTime,
- timescale: timescale,
- version: version,
- referencesCount: referencesCount,
- references: references
- };
- }
-
- /**
- * Parses an MP4 initialization segment and extracts stream type and
- * timescale values for any declared tracks. Timescale values indicate the
- * number of clock ticks per second to assume for time-based values
- * elsewhere in the MP4.
- *
- * To determine the start time of an MP4, you need two pieces of
- * information: the timescale unit and the earliest base media decode
- * time. Multiple timescales can be specified within an MP4 but the
- * base media decode time is always expressed in the timescale from
- * the media header box for the track:
- * ```
- * moov > trak > mdia > mdhd.timescale
- * moov > trak > mdia > hdlr
- * ```
- * @param initSegment the bytes of the init segment
- * @returns a hash of track type to timescale values or null if
- * the init segment is malformed.
- */
-
- function parseInitSegment(initSegment) {
- var result = [];
- var traks = findBox(initSegment, ['moov', 'trak']);
- for (var i = 0; i < traks.length; i++) {
- var trak = traks[i];
- var tkhd = findBox(trak, ['tkhd'])[0];
- if (tkhd) {
- var version = tkhd[0];
- var trackId = readUint32(tkhd, version === 0 ? 12 : 20);
- var mdhd = findBox(trak, ['mdia', 'mdhd'])[0];
- if (mdhd) {
- version = mdhd[0];
- var timescale = readUint32(mdhd, version === 0 ? 12 : 20);
- var hdlr = findBox(trak, ['mdia', 'hdlr'])[0];
- if (hdlr) {
- var hdlrType = bin2str(hdlr.subarray(8, 12));
- var type = {
- soun: ElementaryStreamTypes.AUDIO,
- vide: ElementaryStreamTypes.VIDEO
- }[hdlrType];
- if (type) {
- // Parse codec details
- var stsd = findBox(trak, ['mdia', 'minf', 'stbl', 'stsd'])[0];
- var stsdData = parseStsd(stsd);
- result[trackId] = {
- timescale: timescale,
- type: type
- };
- result[type] = _objectSpread2({
- timescale: timescale,
- id: trackId
- }, stsdData);
- }
- }
- }
- }
- }
- var trex = findBox(initSegment, ['moov', 'mvex', 'trex']);
- trex.forEach(function (trex) {
- var trackId = readUint32(trex, 4);
- var track = result[trackId];
- if (track) {
- track.default = {
- duration: readUint32(trex, 12),
- flags: readUint32(trex, 20)
- };
- }
- });
- return result;
- }
- function parseStsd(stsd) {
- var sampleEntries = stsd.subarray(8);
- var sampleEntriesEnd = sampleEntries.subarray(8 + 78);
- var fourCC = bin2str(sampleEntries.subarray(4, 8));
- var codec = fourCC;
- var encrypted = fourCC === 'enca' || fourCC === 'encv';
- if (encrypted) {
- var encBox = findBox(sampleEntries, [fourCC])[0];
- var encBoxChildren = encBox.subarray(fourCC === 'enca' ? 28 : 78);
- var sinfs = findBox(encBoxChildren, ['sinf']);
- sinfs.forEach(function (sinf) {
- var schm = findBox(sinf, ['schm'])[0];
- if (schm) {
- var scheme = bin2str(schm.subarray(4, 8));
- if (scheme === 'cbcs' || scheme === 'cenc') {
- var frma = findBox(sinf, ['frma'])[0];
- if (frma) {
- // for encrypted content codec fourCC will be in frma
- codec = bin2str(frma);
- }
- }
- }
- });
- }
- switch (codec) {
- case 'avc1':
- case 'avc2':
- case 'avc3':
- case 'avc4':
- {
- // extract profile + compatibility + level out of avcC box
- var avcCBox = findBox(sampleEntriesEnd, ['avcC'])[0];
- codec += '.' + toHex(avcCBox[1]) + toHex(avcCBox[2]) + toHex(avcCBox[3]);
- break;
- }
- case 'mp4a':
- {
- var codecBox = findBox(sampleEntries, [fourCC])[0];
- var esdsBox = findBox(codecBox.subarray(28), ['esds'])[0];
- if (esdsBox && esdsBox.length > 12) {
- var i = 4;
- // ES Descriptor tag
- if (esdsBox[i++] !== 0x03) {
- break;
- }
- i = skipBERInteger(esdsBox, i);
- i += 2; // skip es_id;
- var flags = esdsBox[i++];
- if (flags & 0x80) {
- i += 2; // skip dependency es_id
- }
- if (flags & 0x40) {
- i += esdsBox[i++]; // skip URL
- }
- // Decoder config descriptor
- if (esdsBox[i++] !== 0x04) {
- break;
- }
- i = skipBERInteger(esdsBox, i);
- var objectType = esdsBox[i++];
- if (objectType === 0x40) {
- codec += '.' + toHex(objectType);
- } else {
- break;
- }
- i += 12;
- // Decoder specific info
- if (esdsBox[i++] !== 0x05) {
- break;
- }
- i = skipBERInteger(esdsBox, i);
- var firstByte = esdsBox[i++];
- var audioObjectType = (firstByte & 0xf8) >> 3;
- if (audioObjectType === 31) {
- audioObjectType += 1 + ((firstByte & 0x7) << 3) + ((esdsBox[i] & 0xe0) >> 5);
- }
- codec += '.' + audioObjectType;
- }
- break;
- }
- case 'hvc1':
- case 'hev1':
- {
- var hvcCBox = findBox(sampleEntriesEnd, ['hvcC'])[0];
- var profileByte = hvcCBox[1];
- var profileSpace = ['', 'A', 'B', 'C'][profileByte >> 6];
- var generalProfileIdc = profileByte & 0x1f;
- var profileCompat = readUint32(hvcCBox, 2);
- var tierFlag = (profileByte & 0x20) >> 5 ? 'H' : 'L';
- var levelIDC = hvcCBox[12];
- var constraintIndicator = hvcCBox.subarray(6, 12);
- codec += '.' + profileSpace + generalProfileIdc;
- codec += '.' + profileCompat.toString(16).toUpperCase();
- codec += '.' + tierFlag + levelIDC;
- var constraintString = '';
- for (var _i = constraintIndicator.length; _i--;) {
- var _byte = constraintIndicator[_i];
- if (_byte || constraintString) {
- var encodedByte = _byte.toString(16).toUpperCase();
- constraintString = '.' + encodedByte + constraintString;
- }
- }
- codec += constraintString;
- break;
- }
- case 'dvh1':
- case 'dvhe':
- {
- var dvcCBox = findBox(sampleEntriesEnd, ['dvcC'])[0];
- var profile = dvcCBox[2] >> 1 & 0x7f;
- var level = dvcCBox[2] << 5 & 0x20 | dvcCBox[3] >> 3 & 0x1f;
- codec += '.' + addLeadingZero(profile) + '.' + addLeadingZero(level);
- break;
- }
- case 'vp09':
- {
- var vpcCBox = findBox(sampleEntriesEnd, ['vpcC'])[0];
- var _profile = vpcCBox[4];
- var _level = vpcCBox[5];
- var bitDepth = vpcCBox[6] >> 4 & 0x0f;
- codec += '.' + addLeadingZero(_profile) + '.' + addLeadingZero(_level) + '.' + addLeadingZero(bitDepth);
- break;
- }
- case 'av01':
- {
- var av1CBox = findBox(sampleEntriesEnd, ['av1C'])[0];
- var _profile2 = av1CBox[1] >>> 5;
- var _level2 = av1CBox[1] & 0x1f;
- var _tierFlag = av1CBox[2] >>> 7 ? 'H' : 'M';
- var highBitDepth = (av1CBox[2] & 0x40) >> 6;
- var twelveBit = (av1CBox[2] & 0x20) >> 5;
- var _bitDepth = _profile2 === 2 && highBitDepth ? twelveBit ? 12 : 10 : highBitDepth ? 10 : 8;
- var monochrome = (av1CBox[2] & 0x10) >> 4;
- var chromaSubsamplingX = (av1CBox[2] & 0x08) >> 3;
- var chromaSubsamplingY = (av1CBox[2] & 0x04) >> 2;
- var chromaSamplePosition = av1CBox[2] & 0x03;
- // TODO: parse color_description_present_flag
- // default it to BT.709/limited range for now
- // more info https://aomediacodec.github.io/av1-isobmff/#av1codecconfigurationbox-syntax
- var colorPrimaries = 1;
- var transferCharacteristics = 1;
- var matrixCoefficients = 1;
- var videoFullRangeFlag = 0;
- codec += '.' + _profile2 + '.' + addLeadingZero(_level2) + _tierFlag + '.' + addLeadingZero(_bitDepth) + '.' + monochrome + '.' + chromaSubsamplingX + chromaSubsamplingY + chromaSamplePosition + '.' + addLeadingZero(colorPrimaries) + '.' + addLeadingZero(transferCharacteristics) + '.' + addLeadingZero(matrixCoefficients) + '.' + videoFullRangeFlag;
- break;
- }
- }
- return {
- codec: codec,
- encrypted: encrypted
- };
- }
- function skipBERInteger(bytes, i) {
- var limit = i + 5;
- while (bytes[i++] & 0x80 && i < limit) {}
- return i;
- }
- function toHex(x) {
- return ('0' + x.toString(16).toUpperCase()).slice(-2);
- }
- function addLeadingZero(num) {
- return (num < 10 ? '0' : '') + num;
- }
- function patchEncyptionData(initSegment, decryptdata) {
- if (!initSegment || !decryptdata) {
- return initSegment;
- }
- var keyId = decryptdata.keyId;
- if (keyId && decryptdata.isCommonEncryption) {
- var traks = findBox(initSegment, ['moov', 'trak']);
- traks.forEach(function (trak) {
- var stsd = findBox(trak, ['mdia', 'minf', 'stbl', 'stsd'])[0];
-
- // skip the sample entry count
- var sampleEntries = stsd.subarray(8);
- var encBoxes = findBox(sampleEntries, ['enca']);
- var isAudio = encBoxes.length > 0;
- if (!isAudio) {
- encBoxes = findBox(sampleEntries, ['encv']);
- }
- encBoxes.forEach(function (enc) {
- var encBoxChildren = isAudio ? enc.subarray(28) : enc.subarray(78);
- var sinfBoxes = findBox(encBoxChildren, ['sinf']);
- sinfBoxes.forEach(function (sinf) {
- var tenc = parseSinf(sinf);
- if (tenc) {
- // Look for default key id (keyID offset is always 8 within the tenc box):
- var tencKeyId = tenc.subarray(8, 24);
- if (!tencKeyId.some(function (b) {
- return b !== 0;
- })) {
- logger.log("[eme] Patching keyId in 'enc" + (isAudio ? 'a' : 'v') + ">sinf>>tenc' box: " + Hex.hexDump(tencKeyId) + " -> " + Hex.hexDump(keyId));
- tenc.set(keyId, 8);
- }
- }
- });
- });
- });
- }
- return initSegment;
- }
- function parseSinf(sinf) {
- var schm = findBox(sinf, ['schm'])[0];
- if (schm) {
- var scheme = bin2str(schm.subarray(4, 8));
- if (scheme === 'cbcs' || scheme === 'cenc') {
- return findBox(sinf, ['schi', 'tenc'])[0];
- }
- }
- return null;
- }
-
- /**
- * Determine the base media decode start time, in seconds, for an MP4
- * fragment. If multiple fragments are specified, the earliest time is
- * returned.
- *
- * The base media decode time can be parsed from track fragment
- * metadata:
- * ```
- * moof > traf > tfdt.baseMediaDecodeTime
- * ```
- * It requires the timescale value from the mdhd to interpret.
- *
- * @param initData - a hash of track type to timescale values
- * @param fmp4 - the bytes of the mp4 fragment
- * @returns the earliest base media decode start time for the
- * fragment, in seconds
- */
- function getStartDTS(initData, fmp4) {
- // we need info from two children of each track fragment box
- return findBox(fmp4, ['moof', 'traf']).reduce(function (result, traf) {
- var tfdt = findBox(traf, ['tfdt'])[0];
- var version = tfdt[0];
- var start = findBox(traf, ['tfhd']).reduce(function (result, tfhd) {
- // get the track id from the tfhd
- var id = readUint32(tfhd, 4);
- var track = initData[id];
- if (track) {
- var baseTime = readUint32(tfdt, 4);
- if (version === 1) {
- // If value is too large, assume signed 64-bit. Negative track fragment decode times are invalid, but they exist in the wild.
- // This prevents large values from being used for initPTS, which can cause playlist sync issues.
- // https://github.com/video-dev/hls.js/issues/5303
- if (baseTime === UINT32_MAX$1) {
- logger.warn("[mp4-demuxer]: Ignoring assumed invalid signed 64-bit track fragment decode time");
- return result;
- }
- baseTime *= UINT32_MAX$1 + 1;
- baseTime += readUint32(tfdt, 8);
- }
- // assume a 90kHz clock if no timescale was specified
- var scale = track.timescale || 90e3;
- // convert base time to seconds
- var startTime = baseTime / scale;
- if (isFiniteNumber(startTime) && (result === null || startTime < result)) {
- return startTime;
- }
- }
- return result;
- }, null);
- if (start !== null && isFiniteNumber(start) && (result === null || start < result)) {
- return start;
- }
- return result;
- }, null);
- }
-
- /*
- For Reference:
- aligned(8) class TrackFragmentHeaderBox
- extends FullBox(‘tfhd’, 0, tf_flags){
- unsigned int(32) track_ID;
- // all the following are optional fields
- unsigned int(64) base_data_offset;
- unsigned int(32) sample_description_index;
- unsigned int(32) default_sample_duration;
- unsigned int(32) default_sample_size;
- unsigned int(32) default_sample_flags
- }
- */
- function getDuration(data, initData) {
- var rawDuration = 0;
- var videoDuration = 0;
- var audioDuration = 0;
- var trafs = findBox(data, ['moof', 'traf']);
- for (var i = 0; i < trafs.length; i++) {
- var traf = trafs[i];
- // There is only one tfhd & trun per traf
- // This is true for CMAF style content, and we should perhaps check the ftyp
- // and only look for a single trun then, but for ISOBMFF we should check
- // for multiple track runs.
- var tfhd = findBox(traf, ['tfhd'])[0];
- // get the track id from the tfhd
- var id = readUint32(tfhd, 4);
- var track = initData[id];
- if (!track) {
- continue;
- }
- var trackDefault = track.default;
- var tfhdFlags = readUint32(tfhd, 0) | (trackDefault == null ? void 0 : trackDefault.flags);
- var sampleDuration = trackDefault == null ? void 0 : trackDefault.duration;
- if (tfhdFlags & 0x000008) {
- // 0x000008 indicates the presence of the default_sample_duration field
- if (tfhdFlags & 0x000002) {
- // 0x000002 indicates the presence of the sample_description_index field, which precedes default_sample_duration
- // If present, the default_sample_duration exists at byte offset 12
- sampleDuration = readUint32(tfhd, 12);
- } else {
- // Otherwise, the duration is at byte offset 8
- sampleDuration = readUint32(tfhd, 8);
- }
- }
- // assume a 90kHz clock if no timescale was specified
- var timescale = track.timescale || 90e3;
- var truns = findBox(traf, ['trun']);
- for (var j = 0; j < truns.length; j++) {
- rawDuration = computeRawDurationFromSamples(truns[j]);
- if (!rawDuration && sampleDuration) {
- var sampleCount = readUint32(truns[j], 4);
- rawDuration = sampleDuration * sampleCount;
- }
- if (track.type === ElementaryStreamTypes.VIDEO) {
- videoDuration += rawDuration / timescale;
- } else if (track.type === ElementaryStreamTypes.AUDIO) {
- audioDuration += rawDuration / timescale;
- }
- }
- }
- if (videoDuration === 0 && audioDuration === 0) {
- // If duration samples are not available in the traf use sidx subsegment_duration
- var sidxMinStart = Infinity;
- var sidxMaxEnd = 0;
- var sidxDuration = 0;
- var sidxs = findBox(data, ['sidx']);
- for (var _i2 = 0; _i2 < sidxs.length; _i2++) {
- var sidx = parseSegmentIndex(sidxs[_i2]);
- if (sidx != null && sidx.references) {
- sidxMinStart = Math.min(sidxMinStart, sidx.earliestPresentationTime / sidx.timescale);
- var subSegmentDuration = sidx.references.reduce(function (dur, ref) {
- return dur + ref.info.duration || 0;
- }, 0);
- sidxMaxEnd = Math.max(sidxMaxEnd, subSegmentDuration + sidx.earliestPresentationTime / sidx.timescale);
- sidxDuration = sidxMaxEnd - sidxMinStart;
- }
- }
- if (sidxDuration && isFiniteNumber(sidxDuration)) {
- return sidxDuration;
- }
- }
- if (videoDuration) {
- return videoDuration;
- }
- return audioDuration;
- }
-
- /*
- For Reference:
- aligned(8) class TrackRunBox
- extends FullBox(‘trun’, version, tr_flags) {
- unsigned int(32) sample_count;
- // the following are optional fields
- signed int(32) data_offset;
- unsigned int(32) first_sample_flags;
- // all fields in the following array are optional
- {
- unsigned int(32) sample_duration;
- unsigned int(32) sample_size;
- unsigned int(32) sample_flags
- if (version == 0)
- { unsigned int(32)
- else
- { signed int(32)
- }[ sample_count ]
- }
- */
- function computeRawDurationFromSamples(trun) {
- var flags = readUint32(trun, 0);
- // Flags are at offset 0, non-optional sample_count is at offset 4. Therefore we start 8 bytes in.
- // Each field is an int32, which is 4 bytes
- var offset = 8;
- // data-offset-present flag
- if (flags & 0x000001) {
- offset += 4;
- }
- // first-sample-flags-present flag
- if (flags & 0x000004) {
- offset += 4;
- }
- var duration = 0;
- var sampleCount = readUint32(trun, 4);
- for (var i = 0; i < sampleCount; i++) {
- // sample-duration-present flag
- if (flags & 0x000100) {
- var sampleDuration = readUint32(trun, offset);
- duration += sampleDuration;
- offset += 4;
- }
- // sample-size-present flag
- if (flags & 0x000200) {
- offset += 4;
- }
- // sample-flags-present flag
- if (flags & 0x000400) {
- offset += 4;
- }
- // sample-composition-time-offsets-present flag
- if (flags & 0x000800) {
- offset += 4;
- }
- }
- return duration;
- }
- function offsetStartDTS(initData, fmp4, timeOffset) {
- findBox(fmp4, ['moof', 'traf']).forEach(function (traf) {
- findBox(traf, ['tfhd']).forEach(function (tfhd) {
- // get the track id from the tfhd
- var id = readUint32(tfhd, 4);
- var track = initData[id];
- if (!track) {
- return;
- }
- // assume a 90kHz clock if no timescale was specified
- var timescale = track.timescale || 90e3;
- // get the base media decode time from the tfdt
- findBox(traf, ['tfdt']).forEach(function (tfdt) {
- var version = tfdt[0];
- var offset = timeOffset * timescale;
- if (offset) {
- var baseMediaDecodeTime = readUint32(tfdt, 4);
- if (version === 0) {
- baseMediaDecodeTime -= offset;
- baseMediaDecodeTime = Math.max(baseMediaDecodeTime, 0);
- writeUint32(tfdt, 4, baseMediaDecodeTime);
- } else {
- baseMediaDecodeTime *= Math.pow(2, 32);
- baseMediaDecodeTime += readUint32(tfdt, 8);
- baseMediaDecodeTime -= offset;
- baseMediaDecodeTime = Math.max(baseMediaDecodeTime, 0);
- var upper = Math.floor(baseMediaDecodeTime / (UINT32_MAX$1 + 1));
- var lower = Math.floor(baseMediaDecodeTime % (UINT32_MAX$1 + 1));
- writeUint32(tfdt, 4, upper);
- writeUint32(tfdt, 8, lower);
- }
- }
- });
- });
- });
- }
-
- // TODO: Check if the last moof+mdat pair is part of the valid range
- function segmentValidRange(data) {
- var segmentedRange = {
- valid: null,
- remainder: null
- };
- var moofs = findBox(data, ['moof']);
- if (moofs.length < 2) {
- segmentedRange.remainder = data;
- return segmentedRange;
- }
- var last = moofs[moofs.length - 1];
- // Offset by 8 bytes; findBox offsets the start by as much
- segmentedRange.valid = sliceUint8(data, 0, last.byteOffset - 8);
- segmentedRange.remainder = sliceUint8(data, last.byteOffset - 8);
- return segmentedRange;
- }
- function appendUint8Array(data1, data2) {
- var temp = new Uint8Array(data1.length + data2.length);
- temp.set(data1);
- temp.set(data2, data1.length);
- return temp;
- }
- function parseSamples(timeOffset, track) {
- var seiSamples = [];
- var videoData = track.samples;
- var timescale = track.timescale;
- var trackId = track.id;
- var isHEVCFlavor = false;
- var moofs = findBox(videoData, ['moof']);
- moofs.map(function (moof) {
- var moofOffset = moof.byteOffset - 8;
- var trafs = findBox(moof, ['traf']);
- trafs.map(function (traf) {
- // get the base media decode time from the tfdt
- var baseTime = findBox(traf, ['tfdt']).map(function (tfdt) {
- var version = tfdt[0];
- var result = readUint32(tfdt, 4);
- if (version === 1) {
- result *= Math.pow(2, 32);
- result += readUint32(tfdt, 8);
- }
- return result / timescale;
- })[0];
- if (baseTime !== undefined) {
- timeOffset = baseTime;
- }
- return findBox(traf, ['tfhd']).map(function (tfhd) {
- var id = readUint32(tfhd, 4);
- var tfhdFlags = readUint32(tfhd, 0) & 0xffffff;
- var baseDataOffsetPresent = (tfhdFlags & 0x000001) !== 0;
- var sampleDescriptionIndexPresent = (tfhdFlags & 0x000002) !== 0;
- var defaultSampleDurationPresent = (tfhdFlags & 0x000008) !== 0;
- var defaultSampleDuration = 0;
- var defaultSampleSizePresent = (tfhdFlags & 0x000010) !== 0;
- var defaultSampleSize = 0;
- var defaultSampleFlagsPresent = (tfhdFlags & 0x000020) !== 0;
- var tfhdOffset = 8;
- if (id === trackId) {
- if (baseDataOffsetPresent) {
- tfhdOffset += 8;
- }
- if (sampleDescriptionIndexPresent) {
- tfhdOffset += 4;
- }
- if (defaultSampleDurationPresent) {
- defaultSampleDuration = readUint32(tfhd, tfhdOffset);
- tfhdOffset += 4;
- }
- if (defaultSampleSizePresent) {
- defaultSampleSize = readUint32(tfhd, tfhdOffset);
- tfhdOffset += 4;
- }
- if (defaultSampleFlagsPresent) {
- tfhdOffset += 4;
- }
- if (track.type === 'video') {
- isHEVCFlavor = isHEVC(track.codec);
- }
- findBox(traf, ['trun']).map(function (trun) {
- var version = trun[0];
- var flags = readUint32(trun, 0) & 0xffffff;
- var dataOffsetPresent = (flags & 0x000001) !== 0;
- var dataOffset = 0;
- var firstSampleFlagsPresent = (flags & 0x000004) !== 0;
- var sampleDurationPresent = (flags & 0x000100) !== 0;
- var sampleDuration = 0;
- var sampleSizePresent = (flags & 0x000200) !== 0;
- var sampleSize = 0;
- var sampleFlagsPresent = (flags & 0x000400) !== 0;
- var sampleCompositionOffsetsPresent = (flags & 0x000800) !== 0;
- var compositionOffset = 0;
- var sampleCount = readUint32(trun, 4);
- var trunOffset = 8; // past version, flags, and sample count
-
- if (dataOffsetPresent) {
- dataOffset = readUint32(trun, trunOffset);
- trunOffset += 4;
- }
- if (firstSampleFlagsPresent) {
- trunOffset += 4;
- }
- var sampleOffset = dataOffset + moofOffset;
- for (var ix = 0; ix < sampleCount; ix++) {
- if (sampleDurationPresent) {
- sampleDuration = readUint32(trun, trunOffset);
- trunOffset += 4;
- } else {
- sampleDuration = defaultSampleDuration;
- }
- if (sampleSizePresent) {
- sampleSize = readUint32(trun, trunOffset);
- trunOffset += 4;
- } else {
- sampleSize = defaultSampleSize;
- }
- if (sampleFlagsPresent) {
- trunOffset += 4;
- }
- if (sampleCompositionOffsetsPresent) {
- if (version === 0) {
- compositionOffset = readUint32(trun, trunOffset);
- } else {
- compositionOffset = readSint32(trun, trunOffset);
- }
- trunOffset += 4;
- }
- if (track.type === ElementaryStreamTypes.VIDEO) {
- var naluTotalSize = 0;
- while (naluTotalSize < sampleSize) {
- var naluSize = readUint32(videoData, sampleOffset);
- sampleOffset += 4;
- if (isSEIMessage(isHEVCFlavor, videoData[sampleOffset])) {
- var data = videoData.subarray(sampleOffset, sampleOffset + naluSize);
- parseSEIMessageFromNALu(data, isHEVCFlavor ? 2 : 1, timeOffset + compositionOffset / timescale, seiSamples);
- }
- sampleOffset += naluSize;
- naluTotalSize += naluSize + 4;
- }
- }
- timeOffset += sampleDuration / timescale;
- }
- });
- }
- });
- });
- });
- return seiSamples;
- }
- function isHEVC(codec) {
- if (!codec) {
- return false;
- }
- var delimit = codec.indexOf('.');
- var baseCodec = delimit < 0 ? codec : codec.substring(0, delimit);
- return baseCodec === 'hvc1' || baseCodec === 'hev1' ||
- // Dolby Vision
- baseCodec === 'dvh1' || baseCodec === 'dvhe';
- }
- function isSEIMessage(isHEVCFlavor, naluHeader) {
- if (isHEVCFlavor) {
- var naluType = naluHeader >> 1 & 0x3f;
- return naluType === 39 || naluType === 40;
- } else {
- var _naluType = naluHeader & 0x1f;
- return _naluType === 6;
- }
- }
- function parseSEIMessageFromNALu(unescapedData, headerSize, pts, samples) {
- var data = discardEPB(unescapedData);
- var seiPtr = 0;
- // skip nal header
- seiPtr += headerSize;
- var payloadType = 0;
- var payloadSize = 0;
- var b = 0;
- while (seiPtr < data.length) {
- payloadType = 0;
- do {
- if (seiPtr >= data.length) {
- break;
- }
- b = data[seiPtr++];
- payloadType += b;
- } while (b === 0xff);
-
- // Parse payload size.
- payloadSize = 0;
- do {
- if (seiPtr >= data.length) {
- break;
- }
- b = data[seiPtr++];
- payloadSize += b;
- } while (b === 0xff);
- var leftOver = data.length - seiPtr;
- // Create a variable to process the payload
- var payPtr = seiPtr;
-
- // Increment the seiPtr to the end of the payload
- if (payloadSize < leftOver) {
- seiPtr += payloadSize;
- } else if (payloadSize > leftOver) {
- // Some type of corruption has happened?
- logger.error("Malformed SEI payload. " + payloadSize + " is too small, only " + leftOver + " bytes left to parse.");
- // We might be able to parse some data, but let's be safe and ignore it.
- break;
- }
- if (payloadType === 4) {
- var countryCode = data[payPtr++];
- if (countryCode === 181) {
- var providerCode = readUint16(data, payPtr);
- payPtr += 2;
- if (providerCode === 49) {
- var userStructure = readUint32(data, payPtr);
- payPtr += 4;
- if (userStructure === 0x47413934) {
- var userDataType = data[payPtr++];
-
- // Raw CEA-608 bytes wrapped in CEA-708 packet
- if (userDataType === 3) {
- var firstByte = data[payPtr++];
- var totalCCs = 0x1f & firstByte;
- var enabled = 0x40 & firstByte;
- var totalBytes = enabled ? 2 + totalCCs * 3 : 0;
- var byteArray = new Uint8Array(totalBytes);
- if (enabled) {
- byteArray[0] = firstByte;
- for (var i = 1; i < totalBytes; i++) {
- byteArray[i] = data[payPtr++];
- }
- }
- samples.push({
- type: userDataType,
- payloadType: payloadType,
- pts: pts,
- bytes: byteArray
- });
- }
- }
- }
- }
- } else if (payloadType === 5) {
- if (payloadSize > 16) {
- var uuidStrArray = [];
- for (var _i3 = 0; _i3 < 16; _i3++) {
- var _b = data[payPtr++].toString(16);
- uuidStrArray.push(_b.length == 1 ? '0' + _b : _b);
- if (_i3 === 3 || _i3 === 5 || _i3 === 7 || _i3 === 9) {
- uuidStrArray.push('-');
- }
- }
- var length = payloadSize - 16;
- var userDataBytes = new Uint8Array(length);
- for (var _i4 = 0; _i4 < length; _i4++) {
- userDataBytes[_i4] = data[payPtr++];
- }
- samples.push({
- payloadType: payloadType,
- pts: pts,
- uuid: uuidStrArray.join(''),
- userData: utf8ArrayToStr(userDataBytes),
- userDataBytes: userDataBytes
- });
- }
- }
- }
- }
-
- /**
- * remove Emulation Prevention bytes from a RBSP
- */
- function discardEPB(data) {
- var length = data.byteLength;
- var EPBPositions = [];
- var i = 1;
-
- // Find all `Emulation Prevention Bytes`
- while (i < length - 2) {
- if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {
- EPBPositions.push(i + 2);
- i += 2;
- } else {
- i++;
- }
- }
-
- // If no Emulation Prevention Bytes were found just return the original
- // array
- if (EPBPositions.length === 0) {
- return data;
- }
-
- // Create a new array to hold the NAL unit data
- var newLength = length - EPBPositions.length;
- var newData = new Uint8Array(newLength);
- var sourceIndex = 0;
- for (i = 0; i < newLength; sourceIndex++, i++) {
- if (sourceIndex === EPBPositions[0]) {
- // Skip this byte
- sourceIndex++;
- // Remove this position index
- EPBPositions.shift();
- }
- newData[i] = data[sourceIndex];
- }
- return newData;
- }
- function parseEmsg(data) {
- var version = data[0];
- var schemeIdUri = '';
- var value = '';
- var timeScale = 0;
- var presentationTimeDelta = 0;
- var presentationTime = 0;
- var eventDuration = 0;
- var id = 0;
- var offset = 0;
- if (version === 0) {
- while (bin2str(data.subarray(offset, offset + 1)) !== '\0') {
- schemeIdUri += bin2str(data.subarray(offset, offset + 1));
- offset += 1;
- }
- schemeIdUri += bin2str(data.subarray(offset, offset + 1));
- offset += 1;
- while (bin2str(data.subarray(offset, offset + 1)) !== '\0') {
- value += bin2str(data.subarray(offset, offset + 1));
- offset += 1;
- }
- value += bin2str(data.subarray(offset, offset + 1));
- offset += 1;
- timeScale = readUint32(data, 12);
- presentationTimeDelta = readUint32(data, 16);
- eventDuration = readUint32(data, 20);
- id = readUint32(data, 24);
- offset = 28;
- } else if (version === 1) {
- offset += 4;
- timeScale = readUint32(data, offset);
- offset += 4;
- var leftPresentationTime = readUint32(data, offset);
- offset += 4;
- var rightPresentationTime = readUint32(data, offset);
- offset += 4;
- presentationTime = Math.pow(2, 32) * leftPresentationTime + rightPresentationTime;
- if (!isSafeInteger(presentationTime)) {
- presentationTime = Number.MAX_SAFE_INTEGER;
- logger.warn('Presentation time exceeds safe integer limit and wrapped to max safe integer in parsing emsg box');
- }
- eventDuration = readUint32(data, offset);
- offset += 4;
- id = readUint32(data, offset);
- offset += 4;
- while (bin2str(data.subarray(offset, offset + 1)) !== '\0') {
- schemeIdUri += bin2str(data.subarray(offset, offset + 1));
- offset += 1;
- }
- schemeIdUri += bin2str(data.subarray(offset, offset + 1));
- offset += 1;
- while (bin2str(data.subarray(offset, offset + 1)) !== '\0') {
- value += bin2str(data.subarray(offset, offset + 1));
- offset += 1;
- }
- value += bin2str(data.subarray(offset, offset + 1));
- offset += 1;
- }
- var payload = data.subarray(offset, data.byteLength);
- return {
- schemeIdUri: schemeIdUri,
- value: value,
- timeScale: timeScale,
- presentationTime: presentationTime,
- presentationTimeDelta: presentationTimeDelta,
- eventDuration: eventDuration,
- id: id,
- payload: payload
- };
- }
- function mp4Box(type) {
- for (var _len = arguments.length, payload = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
- payload[_key - 1] = arguments[_key];
- }
- var len = payload.length;
- var size = 8;
- var i = len;
- while (i--) {
- size += payload[i].byteLength;
- }
- var result = new Uint8Array(size);
- result[0] = size >> 24 & 0xff;
- result[1] = size >> 16 & 0xff;
- result[2] = size >> 8 & 0xff;
- result[3] = size & 0xff;
- result.set(type, 4);
- for (i = 0, size = 8; i < len; i++) {
- result.set(payload[i], size);
- size += payload[i].byteLength;
- }
- return result;
- }
- function mp4pssh(systemId, keyids, data) {
- if (systemId.byteLength !== 16) {
- throw new RangeError('Invalid system id');
- }
- var version;
- var kids;
- if (keyids) {
- version = 1;
- kids = new Uint8Array(keyids.length * 16);
- for (var ix = 0; ix < keyids.length; ix++) {
- var k = keyids[ix]; // uint8array
- if (k.byteLength !== 16) {
- throw new RangeError('Invalid key');
- }
- kids.set(k, ix * 16);
- }
- } else {
- version = 0;
- kids = new Uint8Array();
- }
- var kidCount;
- if (version > 0) {
- kidCount = new Uint8Array(4);
- if (keyids.length > 0) {
- new DataView(kidCount.buffer).setUint32(0, keyids.length, false);
- }
- } else {
- kidCount = new Uint8Array();
- }
- var dataSize = new Uint8Array(4);
- if (data && data.byteLength > 0) {
- new DataView(dataSize.buffer).setUint32(0, data.byteLength, false);
- }
- return mp4Box([112, 115, 115, 104], new Uint8Array([version, 0x00, 0x00, 0x00 // Flags
- ]), systemId,
- // 16 bytes
- kidCount, kids, dataSize, data || new Uint8Array());
- }
- function parseMultiPssh(initData) {
- var results = [];
- if (initData instanceof ArrayBuffer) {
- var length = initData.byteLength;
- var offset = 0;
- while (offset + 32 < length) {
- var view = new DataView(initData, offset);
- var pssh = parsePssh(view);
- results.push(pssh);
- offset += pssh.size;
- }
- }
- return results;
- }
- function parsePssh(view) {
- var size = view.getUint32(0);
- var offset = view.byteOffset;
- var length = view.byteLength;
- if (length < size) {
- return {
- offset: offset,
- size: length
- };
- }
- var type = view.getUint32(4);
- if (type !== 0x70737368) {
- return {
- offset: offset,
- size: size
- };
- }
- var version = view.getUint32(8) >>> 24;
- if (version !== 0 && version !== 1) {
- return {
- offset: offset,
- size: size
- };
- }
- var buffer = view.buffer;
- var systemId = Hex.hexDump(new Uint8Array(buffer, offset + 12, 16));
- var dataSizeOrKidCount = view.getUint32(28);
- var kids = null;
- var data = null;
- if (version === 0) {
- if (size - 32 < dataSizeOrKidCount || dataSizeOrKidCount < 22) {
- return {
- offset: offset,
- size: size
- };
- }
- data = new Uint8Array(buffer, offset + 32, dataSizeOrKidCount);
- } else if (version === 1) {
- if (!dataSizeOrKidCount || length < offset + 32 + dataSizeOrKidCount * 16 + 16) {
- return {
- offset: offset,
- size: size
- };
- }
- kids = [];
- for (var i = 0; i < dataSizeOrKidCount; i++) {
- kids.push(new Uint8Array(buffer, offset + 32 + i * 16, 16));
- }
- }
- return {
- version: version,
- systemId: systemId,
- kids: kids,
- data: data,
- offset: offset,
- size: size
- };
- }
-
- var keyUriToKeyIdMap = {};
- var LevelKey = /*#__PURE__*/function () {
- LevelKey.clearKeyUriToKeyIdMap = function clearKeyUriToKeyIdMap() {
- keyUriToKeyIdMap = {};
- };
- function LevelKey(method, uri, format, formatversions, iv) {
- if (formatversions === void 0) {
- formatversions = [1];
- }
- if (iv === void 0) {
- iv = null;
- }
- this.uri = void 0;
- this.method = void 0;
- this.keyFormat = void 0;
- this.keyFormatVersions = void 0;
- this.encrypted = void 0;
- this.isCommonEncryption = void 0;
- this.iv = null;
- this.key = null;
- this.keyId = null;
- this.pssh = null;
- this.method = method;
- this.uri = uri;
- this.keyFormat = format;
- this.keyFormatVersions = formatversions;
- this.iv = iv;
- this.encrypted = method ? method !== 'NONE' : false;
- this.isCommonEncryption = this.encrypted && method !== 'AES-128';
- }
- var _proto = LevelKey.prototype;
- _proto.isSupported = function isSupported() {
- // If it's Segment encryption or No encryption, just select that key system
- if (this.method) {
- if (this.method === 'AES-128' || this.method === 'NONE') {
- return true;
- }
- if (this.keyFormat === 'identity') {
- // Maintain support for clear SAMPLE-AES with MPEG-3 TS
- return this.method === 'SAMPLE-AES';
- } else {
- switch (this.keyFormat) {
- case KeySystemFormats.FAIRPLAY:
- case KeySystemFormats.WIDEVINE:
- case KeySystemFormats.PLAYREADY:
- case KeySystemFormats.CLEARKEY:
- return ['ISO-23001-7', 'SAMPLE-AES', 'SAMPLE-AES-CENC', 'SAMPLE-AES-CTR'].indexOf(this.method) !== -1;
- }
- }
- }
- return false;
- };
- _proto.getDecryptData = function getDecryptData(sn) {
- if (!this.encrypted || !this.uri) {
- return null;
- }
- if (this.method === 'AES-128' && this.uri && !this.iv) {
- if (typeof sn !== 'number') {
- // We are fetching decryption data for a initialization segment
- // If the segment was encrypted with AES-128
- // It must have an IV defined. We cannot substitute the Segment Number in.
- if (this.method === 'AES-128' && !this.iv) {
- logger.warn("missing IV for initialization segment with method=\"" + this.method + "\" - compliance issue");
- }
- // Explicitly set sn to resulting value from implicit conversions 'initSegment' values for IV generation.
- sn = 0;
- }
- var iv = createInitializationVector(sn);
- var decryptdata = new LevelKey(this.method, this.uri, 'identity', this.keyFormatVersions, iv);
- return decryptdata;
- }
-
- // Initialize keyId if possible
- var keyBytes = convertDataUriToArrayBytes(this.uri);
- if (keyBytes) {
- switch (this.keyFormat) {
- case KeySystemFormats.WIDEVINE:
- this.pssh = keyBytes;
- // In case of widevine keyID is embedded in PSSH box. Read Key ID.
- if (keyBytes.length >= 22) {
- this.keyId = keyBytes.subarray(keyBytes.length - 22, keyBytes.length - 6);
- }
- break;
- case KeySystemFormats.PLAYREADY:
- {
- var PlayReadyKeySystemUUID = new Uint8Array([0x9a, 0x04, 0xf0, 0x79, 0x98, 0x40, 0x42, 0x86, 0xab, 0x92, 0xe6, 0x5b, 0xe0, 0x88, 0x5f, 0x95]);
- this.pssh = mp4pssh(PlayReadyKeySystemUUID, null, keyBytes);
- var keyBytesUtf16 = new Uint16Array(keyBytes.buffer, keyBytes.byteOffset, keyBytes.byteLength / 2);
- var keyByteStr = String.fromCharCode.apply(null, Array.from(keyBytesUtf16));
-
- // Parse Playready WRMHeader XML
- var xmlKeyBytes = keyByteStr.substring(keyByteStr.indexOf('<'), keyByteStr.length);
- var parser = new DOMParser();
- var xmlDoc = parser.parseFromString(xmlKeyBytes, 'text/xml');
- var keyData = xmlDoc.getElementsByTagName('KID')[0];
- if (keyData) {
- var keyId = keyData.childNodes[0] ? keyData.childNodes[0].nodeValue : keyData.getAttribute('VALUE');
- if (keyId) {
- var keyIdArray = base64Decode(keyId).subarray(0, 16);
- // KID value in PRO is a base64-encoded little endian GUID interpretation of UUID
- // KID value in ‘tenc’ is a big endian UUID GUID interpretation of UUID
- changeEndianness(keyIdArray);
- this.keyId = keyIdArray;
- }
- }
- break;
- }
- default:
- {
- var keydata = keyBytes.subarray(0, 16);
- if (keydata.length !== 16) {
- var padded = new Uint8Array(16);
- padded.set(keydata, 16 - keydata.length);
- keydata = padded;
- }
- this.keyId = keydata;
- break;
- }
- }
- }
-
- // Default behavior: assign a new keyId for each uri
- if (!this.keyId || this.keyId.byteLength !== 16) {
- var _keyId = keyUriToKeyIdMap[this.uri];
- if (!_keyId) {
- var val = Object.keys(keyUriToKeyIdMap).length % Number.MAX_SAFE_INTEGER;
- _keyId = new Uint8Array(16);
- var dv = new DataView(_keyId.buffer, 12, 4); // Just set the last 4 bytes
- dv.setUint32(0, val);
- keyUriToKeyIdMap[this.uri] = _keyId;
- }
- this.keyId = _keyId;
- }
- return this;
- };
- return LevelKey;
- }();
- function createInitializationVector(segmentNumber) {
- var uint8View = new Uint8Array(16);
- for (var i = 12; i < 16; i++) {
- uint8View[i] = segmentNumber >> 8 * (15 - i) & 0xff;
- }
- return uint8View;
- }
-
- var VARIABLE_REPLACEMENT_REGEX = /\{\$([a-zA-Z0-9-_]+)\}/g;
- function hasVariableReferences(str) {
- return VARIABLE_REPLACEMENT_REGEX.test(str);
- }
- function substituteVariablesInAttributes(parsed, attr, attributeNames) {
- if (parsed.variableList !== null || parsed.hasVariableRefs) {
- for (var i = attributeNames.length; i--;) {
- var name = attributeNames[i];
- var value = attr[name];
- if (value) {
- attr[name] = substituteVariables(parsed, value);
- }
- }
- }
- }
- function substituteVariables(parsed, value) {
- if (parsed.variableList !== null || parsed.hasVariableRefs) {
- var variableList = parsed.variableList;
- return value.replace(VARIABLE_REPLACEMENT_REGEX, function (variableReference) {
- var variableName = variableReference.substring(2, variableReference.length - 1);
- var variableValue = variableList == null ? void 0 : variableList[variableName];
- if (variableValue === undefined) {
- parsed.playlistParsingError || (parsed.playlistParsingError = new Error("Missing preceding EXT-X-DEFINE tag for Variable Reference: \"" + variableName + "\""));
- return variableReference;
- }
- return variableValue;
- });
- }
- return value;
- }
- function addVariableDefinition(parsed, attr, parentUrl) {
- var variableList = parsed.variableList;
- if (!variableList) {
- parsed.variableList = variableList = {};
- }
- var NAME;
- var VALUE;
- if ('QUERYPARAM' in attr) {
- NAME = attr.QUERYPARAM;
- try {
- var searchParams = new self.URL(parentUrl).searchParams;
- if (searchParams.has(NAME)) {
- VALUE = searchParams.get(NAME);
- } else {
- throw new Error("\"" + NAME + "\" does not match any query parameter in URI: \"" + parentUrl + "\"");
- }
- } catch (error) {
- parsed.playlistParsingError || (parsed.playlistParsingError = new Error("EXT-X-DEFINE QUERYPARAM: " + error.message));
- }
- } else {
- NAME = attr.NAME;
- VALUE = attr.VALUE;
- }
- if (NAME in variableList) {
- parsed.playlistParsingError || (parsed.playlistParsingError = new Error("EXT-X-DEFINE duplicate Variable Name declarations: \"" + NAME + "\""));
- } else {
- variableList[NAME] = VALUE || '';
- }
- }
- function importVariableDefinition(parsed, attr, sourceVariableList) {
- var IMPORT = attr.IMPORT;
- if (sourceVariableList && IMPORT in sourceVariableList) {
- var variableList = parsed.variableList;
- if (!variableList) {
- parsed.variableList = variableList = {};
- }
- variableList[IMPORT] = sourceVariableList[IMPORT];
- } else {
- parsed.playlistParsingError || (parsed.playlistParsingError = new Error("EXT-X-DEFINE IMPORT attribute not found in Multivariant Playlist: \"" + IMPORT + "\""));
- }
- }
-
- /**
- * MediaSource helper
- */
-
- function getMediaSource(preferManagedMediaSource) {
- if (preferManagedMediaSource === void 0) {
- preferManagedMediaSource = true;
- }
- if (typeof self === 'undefined') return undefined;
- var mms = (preferManagedMediaSource || !self.MediaSource) && self.ManagedMediaSource;
- return mms || self.MediaSource || self.WebKitMediaSource;
- }
- function isManagedMediaSource(source) {
- return typeof self !== 'undefined' && source === self.ManagedMediaSource;
- }
-
- // from http://mp4ra.org/codecs.html
- // values indicate codec selection preference (lower is higher priority)
- var sampleEntryCodesISO = {
- audio: {
- a3ds: 1,
- 'ac-3': 0.95,
- 'ac-4': 1,
- alac: 0.9,
- alaw: 1,
- dra1: 1,
- 'dts+': 1,
- 'dts-': 1,
- dtsc: 1,
- dtse: 1,
- dtsh: 1,
- 'ec-3': 0.9,
- enca: 1,
- fLaC: 0.9,
- // MP4-RA listed codec entry for FLAC
- flac: 0.9,
- // legacy browser codec name for FLAC
- FLAC: 0.9,
- // some manifests may list "FLAC" with Apple's tools
- g719: 1,
- g726: 1,
- m4ae: 1,
- mha1: 1,
- mha2: 1,
- mhm1: 1,
- mhm2: 1,
- mlpa: 1,
- mp4a: 1,
- 'raw ': 1,
- Opus: 1,
- opus: 1,
- // browsers expect this to be lowercase despite MP4RA says 'Opus'
- samr: 1,
- sawb: 1,
- sawp: 1,
- sevc: 1,
- sqcp: 1,
- ssmv: 1,
- twos: 1,
- ulaw: 1
- },
- video: {
- avc1: 1,
- avc2: 1,
- avc3: 1,
- avc4: 1,
- avcp: 1,
- av01: 0.8,
- drac: 1,
- dva1: 1,
- dvav: 1,
- dvh1: 0.7,
- dvhe: 0.7,
- encv: 1,
- hev1: 0.75,
- hvc1: 0.75,
- mjp2: 1,
- mp4v: 1,
- mvc1: 1,
- mvc2: 1,
- mvc3: 1,
- mvc4: 1,
- resv: 1,
- rv60: 1,
- s263: 1,
- svc1: 1,
- svc2: 1,
- 'vc-1': 1,
- vp08: 1,
- vp09: 0.9
- },
- text: {
- stpp: 1,
- wvtt: 1
- }
- };
- function isCodecType(codec, type) {
- var typeCodes = sampleEntryCodesISO[type];
- return !!typeCodes && !!typeCodes[codec.slice(0, 4)];
- }
- function areCodecsMediaSourceSupported(codecs, type, preferManagedMediaSource) {
- if (preferManagedMediaSource === void 0) {
- preferManagedMediaSource = true;
- }
- return !codecs.split(',').some(function (codec) {
- return !isCodecMediaSourceSupported(codec, type, preferManagedMediaSource);
- });
- }
- function isCodecMediaSourceSupported(codec, type, preferManagedMediaSource) {
- var _MediaSource$isTypeSu;
- if (preferManagedMediaSource === void 0) {
- preferManagedMediaSource = true;
- }
- var MediaSource = getMediaSource(preferManagedMediaSource);
- return (_MediaSource$isTypeSu = MediaSource == null ? void 0 : MediaSource.isTypeSupported(mimeTypeForCodec(codec, type))) != null ? _MediaSource$isTypeSu : false;
- }
- function mimeTypeForCodec(codec, type) {
- return type + "/mp4;codecs=\"" + codec + "\"";
- }
- function videoCodecPreferenceValue(videoCodec) {
- if (videoCodec) {
- var fourCC = videoCodec.substring(0, 4);
- return sampleEntryCodesISO.video[fourCC];
- }
- return 2;
- }
- function codecsSetSelectionPreferenceValue(codecSet) {
- return codecSet.split(',').reduce(function (num, fourCC) {
- var preferenceValue = sampleEntryCodesISO.video[fourCC];
- if (preferenceValue) {
- return (preferenceValue * 2 + num) / (num ? 3 : 2);
- }
- return (sampleEntryCodesISO.audio[fourCC] + num) / (num ? 2 : 1);
- }, 0);
- }
- var CODEC_COMPATIBLE_NAMES = {};
- function getCodecCompatibleNameLower(lowerCaseCodec, preferManagedMediaSource) {
- if (preferManagedMediaSource === void 0) {
- preferManagedMediaSource = true;
- }
- if (CODEC_COMPATIBLE_NAMES[lowerCaseCodec]) {
- return CODEC_COMPATIBLE_NAMES[lowerCaseCodec];
- }
-
- // Idealy fLaC and Opus would be first (spec-compliant) but
- // some browsers will report that fLaC is supported then fail.
- // see: https://bugs.chromium.org/p/chromium/issues/detail?id=1422728
- var codecsToCheck = {
- flac: ['flac', 'fLaC', 'FLAC'],
- opus: ['opus', 'Opus']
- }[lowerCaseCodec];
- for (var i = 0; i < codecsToCheck.length; i++) {
- if (isCodecMediaSourceSupported(codecsToCheck[i], 'audio', preferManagedMediaSource)) {
- CODEC_COMPATIBLE_NAMES[lowerCaseCodec] = codecsToCheck[i];
- return codecsToCheck[i];
- }
- }
- return lowerCaseCodec;
- }
- var AUDIO_CODEC_REGEXP = /flac|opus/i;
- function getCodecCompatibleName(codec, preferManagedMediaSource) {
- if (preferManagedMediaSource === void 0) {
- preferManagedMediaSource = true;
- }
- return codec.replace(AUDIO_CODEC_REGEXP, function (m) {
- return getCodecCompatibleNameLower(m.toLowerCase(), preferManagedMediaSource);
- });
- }
- function pickMostCompleteCodecName(parsedCodec, levelCodec) {
- // Parsing of mp4a codecs strings in mp4-tools from media is incomplete as of d8c6c7a
- // so use level codec is parsed codec is unavailable or incomplete
- if (parsedCodec && parsedCodec !== 'mp4a') {
- return parsedCodec;
- }
- return levelCodec ? levelCodec.split(',')[0] : levelCodec;
- }
- function convertAVC1ToAVCOTI(codec) {
- // Convert avc1 codec string from RFC-4281 to RFC-6381 for MediaSource.isTypeSupported
- // Examples: avc1.66.30 to avc1.42001e and avc1.77.30,avc1.66.30 to avc1.4d001e,avc1.42001e.
- var codecs = codec.split(',');
- for (var i = 0; i < codecs.length; i++) {
- var avcdata = codecs[i].split('.');
- if (avcdata.length > 2) {
- var result = avcdata.shift() + '.';
- result += parseInt(avcdata.shift()).toString(16);
- result += ('000' + parseInt(avcdata.shift()).toString(16)).slice(-4);
- codecs[i] = result;
- }
- }
- return codecs.join(',');
- }
-
- var MASTER_PLAYLIST_REGEX = /#EXT-X-STREAM-INF:([^\r\n]*)(?:[\r\n](?:#[^\r\n]*)?)*([^\r\n]+)|#EXT-X-(SESSION-DATA|SESSION-KEY|DEFINE|CONTENT-STEERING|START):([^\r\n]*)[\r\n]+/g;
- var MASTER_PLAYLIST_MEDIA_REGEX = /#EXT-X-MEDIA:(.*)/g;
- var IS_MEDIA_PLAYLIST = /^#EXT(?:INF|-X-TARGETDURATION):/m; // Handle empty Media Playlist (first EXTINF not signaled, but TARGETDURATION present)
-
- var LEVEL_PLAYLIST_REGEX_FAST = new RegExp([/#EXTINF:\s*(\d*(?:\.\d+)?)(?:,(.*)\s+)?/.source,
- // duration (#EXTINF:,), group 1 => duration, group 2 => title
- /(?!#) *(\S[^\r\n]*)/.source,
- // segment URI, group 3 => the URI (note newline is not eaten)
- /#EXT-X-BYTERANGE:*(.+)/.source,
- // next segment's byterange, group 4 => range spec (x@y)
- /#EXT-X-PROGRAM-DATE-TIME:(.+)/.source,
- // next segment's program date/time group 5 => the datetime spec
- /#.*/.source // All other non-segment oriented tags will match with all groups empty
- ].join('|'), 'g');
- var LEVEL_PLAYLIST_REGEX_SLOW = new RegExp([/#(EXTM3U)/.source, /#EXT-X-(DATERANGE|DEFINE|KEY|MAP|PART|PART-INF|PLAYLIST-TYPE|PRELOAD-HINT|RENDITION-REPORT|SERVER-CONTROL|SKIP|START):(.+)/.source, /#EXT-X-(BITRATE|DISCONTINUITY-SEQUENCE|MEDIA-SEQUENCE|TARGETDURATION|VERSION): *(\d+)/.source, /#EXT-X-(DISCONTINUITY|ENDLIST|GAP|INDEPENDENT-SEGMENTS)/.source, /(#)([^:]*):(.*)/.source, /(#)(.*)(?:.*)\r?\n?/.source].join('|'));
- var M3U8Parser = /*#__PURE__*/function () {
- function M3U8Parser() {}
- M3U8Parser.findGroup = function findGroup(groups, mediaGroupId) {
- for (var i = 0; i < groups.length; i++) {
- var group = groups[i];
- if (group.id === mediaGroupId) {
- return group;
- }
- }
- };
- M3U8Parser.resolve = function resolve(url, baseUrl) {
- return urlToolkitExports.buildAbsoluteURL(baseUrl, url, {
- alwaysNormalize: true
- });
- };
- M3U8Parser.isMediaPlaylist = function isMediaPlaylist(str) {
- return IS_MEDIA_PLAYLIST.test(str);
- };
- M3U8Parser.parseMasterPlaylist = function parseMasterPlaylist(string, baseurl) {
- var hasVariableRefs = hasVariableReferences(string) ;
- var parsed = {
- contentSteering: null,
- levels: [],
- playlistParsingError: null,
- sessionData: null,
- sessionKeys: null,
- startTimeOffset: null,
- variableList: null,
- hasVariableRefs: hasVariableRefs
- };
- var levelsWithKnownCodecs = [];
- MASTER_PLAYLIST_REGEX.lastIndex = 0;
- var result;
- while ((result = MASTER_PLAYLIST_REGEX.exec(string)) != null) {
- if (result[1]) {
- var _level$unknownCodecs;
- // '#EXT-X-STREAM-INF' is found, parse level tag in group 1
- var attrs = new AttrList(result[1]);
- {
- substituteVariablesInAttributes(parsed, attrs, ['CODECS', 'SUPPLEMENTAL-CODECS', 'ALLOWED-CPC', 'PATHWAY-ID', 'STABLE-VARIANT-ID', 'AUDIO', 'VIDEO', 'SUBTITLES', 'CLOSED-CAPTIONS', 'NAME']);
- }
- var uri = substituteVariables(parsed, result[2]) ;
- var level = {
- attrs: attrs,
- bitrate: attrs.decimalInteger('BANDWIDTH') || attrs.decimalInteger('AVERAGE-BANDWIDTH'),
- name: attrs.NAME,
- url: M3U8Parser.resolve(uri, baseurl)
- };
- var resolution = attrs.decimalResolution('RESOLUTION');
- if (resolution) {
- level.width = resolution.width;
- level.height = resolution.height;
- }
- setCodecs(attrs.CODECS, level);
- if (!((_level$unknownCodecs = level.unknownCodecs) != null && _level$unknownCodecs.length)) {
- levelsWithKnownCodecs.push(level);
- }
- parsed.levels.push(level);
- } else if (result[3]) {
- var tag = result[3];
- var attributes = result[4];
- switch (tag) {
- case 'SESSION-DATA':
- {
- // #EXT-X-SESSION-DATA
- var sessionAttrs = new AttrList(attributes);
- {
- substituteVariablesInAttributes(parsed, sessionAttrs, ['DATA-ID', 'LANGUAGE', 'VALUE', 'URI']);
- }
- var dataId = sessionAttrs['DATA-ID'];
- if (dataId) {
- if (parsed.sessionData === null) {
- parsed.sessionData = {};
- }
- parsed.sessionData[dataId] = sessionAttrs;
- }
- break;
- }
- case 'SESSION-KEY':
- {
- // #EXT-X-SESSION-KEY
- var sessionKey = parseKey(attributes, baseurl, parsed);
- if (sessionKey.encrypted && sessionKey.isSupported()) {
- if (parsed.sessionKeys === null) {
- parsed.sessionKeys = [];
- }
- parsed.sessionKeys.push(sessionKey);
- } else {
- logger.warn("[Keys] Ignoring invalid EXT-X-SESSION-KEY tag: \"" + attributes + "\"");
- }
- break;
- }
- case 'DEFINE':
- {
- // #EXT-X-DEFINE
- {
- var variableAttributes = new AttrList(attributes);
- substituteVariablesInAttributes(parsed, variableAttributes, ['NAME', 'VALUE', 'QUERYPARAM']);
- addVariableDefinition(parsed, variableAttributes, baseurl);
- }
- break;
- }
- case 'CONTENT-STEERING':
- {
- // #EXT-X-CONTENT-STEERING
- var contentSteeringAttributes = new AttrList(attributes);
- {
- substituteVariablesInAttributes(parsed, contentSteeringAttributes, ['SERVER-URI', 'PATHWAY-ID']);
- }
- parsed.contentSteering = {
- uri: M3U8Parser.resolve(contentSteeringAttributes['SERVER-URI'], baseurl),
- pathwayId: contentSteeringAttributes['PATHWAY-ID'] || '.'
- };
- break;
- }
- case 'START':
- {
- // #EXT-X-START
- parsed.startTimeOffset = parseStartTimeOffset(attributes);
- break;
- }
- }
- }
- }
- // Filter out levels with unknown codecs if it does not remove all levels
- var stripUnknownCodecLevels = levelsWithKnownCodecs.length > 0 && levelsWithKnownCodecs.length < parsed.levels.length;
- parsed.levels = stripUnknownCodecLevels ? levelsWithKnownCodecs : parsed.levels;
- if (parsed.levels.length === 0) {
- parsed.playlistParsingError = new Error('no levels found in manifest');
- }
- return parsed;
- };
- M3U8Parser.parseMasterPlaylistMedia = function parseMasterPlaylistMedia(string, baseurl, parsed) {
- var result;
- var results = {};
- var levels = parsed.levels;
- var groupsByType = {
- AUDIO: levels.map(function (level) {
- return {
- id: level.attrs.AUDIO,
- audioCodec: level.audioCodec
- };
- }),
- SUBTITLES: levels.map(function (level) {
- return {
- id: level.attrs.SUBTITLES,
- textCodec: level.textCodec
- };
- }),
- 'CLOSED-CAPTIONS': []
- };
- var id = 0;
- MASTER_PLAYLIST_MEDIA_REGEX.lastIndex = 0;
- while ((result = MASTER_PLAYLIST_MEDIA_REGEX.exec(string)) !== null) {
- var attrs = new AttrList(result[1]);
- var type = attrs.TYPE;
- if (type) {
- var groups = groupsByType[type];
- var medias = results[type] || [];
- results[type] = medias;
- {
- substituteVariablesInAttributes(parsed, attrs, ['URI', 'GROUP-ID', 'LANGUAGE', 'ASSOC-LANGUAGE', 'STABLE-RENDITION-ID', 'NAME', 'INSTREAM-ID', 'CHARACTERISTICS', 'CHANNELS']);
- }
- var lang = attrs.LANGUAGE;
- var assocLang = attrs['ASSOC-LANGUAGE'];
- var channels = attrs.CHANNELS;
- var characteristics = attrs.CHARACTERISTICS;
- var instreamId = attrs['INSTREAM-ID'];
- var media = {
- attrs: attrs,
- bitrate: 0,
- id: id++,
- groupId: attrs['GROUP-ID'] || '',
- name: attrs.NAME || lang || '',
- type: type,
- default: attrs.bool('DEFAULT'),
- autoselect: attrs.bool('AUTOSELECT'),
- forced: attrs.bool('FORCED'),
- lang: lang,
- url: attrs.URI ? M3U8Parser.resolve(attrs.URI, baseurl) : ''
- };
- if (assocLang) {
- media.assocLang = assocLang;
- }
- if (channels) {
- media.channels = channels;
- }
- if (characteristics) {
- media.characteristics = characteristics;
- }
- if (instreamId) {
- media.instreamId = instreamId;
- }
- if (groups != null && groups.length) {
- // If there are audio or text groups signalled in the manifest, let's look for a matching codec string for this track
- // If we don't find the track signalled, lets use the first audio groups codec we have
- // Acting as a best guess
- var groupCodec = M3U8Parser.findGroup(groups, media.groupId) || groups[0];
- assignCodec(media, groupCodec, 'audioCodec');
- assignCodec(media, groupCodec, 'textCodec');
- }
- medias.push(media);
- }
- }
- return results;
- };
- M3U8Parser.parseLevelPlaylist = function parseLevelPlaylist(string, baseurl, id, type, levelUrlId, multivariantVariableList) {
- var level = new LevelDetails(baseurl);
- var fragments = level.fragments;
- // The most recent init segment seen (applies to all subsequent segments)
- var currentInitSegment = null;
- var currentSN = 0;
- var currentPart = 0;
- var totalduration = 0;
- var discontinuityCounter = 0;
- var prevFrag = null;
- var frag = new Fragment(type, baseurl);
- var result;
- var i;
- var levelkeys;
- var firstPdtIndex = -1;
- var createNextFrag = false;
- var nextByteRange = null;
- LEVEL_PLAYLIST_REGEX_FAST.lastIndex = 0;
- level.m3u8 = string;
- level.hasVariableRefs = hasVariableReferences(string) ;
- while ((result = LEVEL_PLAYLIST_REGEX_FAST.exec(string)) !== null) {
- if (createNextFrag) {
- createNextFrag = false;
- frag = new Fragment(type, baseurl);
- // setup the next fragment for part loading
- frag.start = totalduration;
- frag.sn = currentSN;
- frag.cc = discontinuityCounter;
- frag.level = id;
- if (currentInitSegment) {
- frag.initSegment = currentInitSegment;
- frag.rawProgramDateTime = currentInitSegment.rawProgramDateTime;
- currentInitSegment.rawProgramDateTime = null;
- if (nextByteRange) {
- frag.setByteRange(nextByteRange);
- nextByteRange = null;
- }
- }
- }
- var duration = result[1];
- if (duration) {
- // INF
- frag.duration = parseFloat(duration);
- // avoid sliced strings https://github.com/video-dev/hls.js/issues/939
- var title = (' ' + result[2]).slice(1);
- frag.title = title || null;
- frag.tagList.push(title ? ['INF', duration, title] : ['INF', duration]);
- } else if (result[3]) {
- // url
- if (isFiniteNumber(frag.duration)) {
- frag.start = totalduration;
- if (levelkeys) {
- setFragLevelKeys(frag, levelkeys, level);
- }
- frag.sn = currentSN;
- frag.level = id;
- frag.cc = discontinuityCounter;
- fragments.push(frag);
- // avoid sliced strings https://github.com/video-dev/hls.js/issues/939
- var uri = (' ' + result[3]).slice(1);
- frag.relurl = substituteVariables(level, uri) ;
- assignProgramDateTime(frag, prevFrag);
- prevFrag = frag;
- totalduration += frag.duration;
- currentSN++;
- currentPart = 0;
- createNextFrag = true;
- }
- } else if (result[4]) {
- // X-BYTERANGE
- var data = (' ' + result[4]).slice(1);
- if (prevFrag) {
- frag.setByteRange(data, prevFrag);
- } else {
- frag.setByteRange(data);
- }
- } else if (result[5]) {
- // PROGRAM-DATE-TIME
- // avoid sliced strings https://github.com/video-dev/hls.js/issues/939
- frag.rawProgramDateTime = (' ' + result[5]).slice(1);
- frag.tagList.push(['PROGRAM-DATE-TIME', frag.rawProgramDateTime]);
- if (firstPdtIndex === -1) {
- firstPdtIndex = fragments.length;
- }
- } else {
- result = result[0].match(LEVEL_PLAYLIST_REGEX_SLOW);
- if (!result) {
- logger.warn('No matches on slow regex match for level playlist!');
- continue;
- }
- for (i = 1; i < result.length; i++) {
- if (typeof result[i] !== 'undefined') {
- break;
- }
- }
-
- // avoid sliced strings https://github.com/video-dev/hls.js/issues/939
- var tag = (' ' + result[i]).slice(1);
- var value1 = (' ' + result[i + 1]).slice(1);
- var value2 = result[i + 2] ? (' ' + result[i + 2]).slice(1) : '';
- switch (tag) {
- case 'PLAYLIST-TYPE':
- level.type = value1.toUpperCase();
- break;
- case 'MEDIA-SEQUENCE':
- currentSN = level.startSN = parseInt(value1);
- break;
- case 'SKIP':
- {
- var skipAttrs = new AttrList(value1);
- {
- substituteVariablesInAttributes(level, skipAttrs, ['RECENTLY-REMOVED-DATERANGES']);
- }
- var skippedSegments = skipAttrs.decimalInteger('SKIPPED-SEGMENTS');
- if (isFiniteNumber(skippedSegments)) {
- level.skippedSegments = skippedSegments;
- // This will result in fragments[] containing undefined values, which we will fill in with `mergeDetails`
- for (var _i = skippedSegments; _i--;) {
- fragments.unshift(null);
- }
- currentSN += skippedSegments;
- }
- var recentlyRemovedDateranges = skipAttrs.enumeratedString('RECENTLY-REMOVED-DATERANGES');
- if (recentlyRemovedDateranges) {
- level.recentlyRemovedDateranges = recentlyRemovedDateranges.split('\t');
- }
- break;
- }
- case 'TARGETDURATION':
- level.targetduration = Math.max(parseInt(value1), 1);
- break;
- case 'VERSION':
- level.version = parseInt(value1);
- break;
- case 'INDEPENDENT-SEGMENTS':
- case 'EXTM3U':
- break;
- case 'ENDLIST':
- level.live = false;
- break;
- case '#':
- if (value1 || value2) {
- frag.tagList.push(value2 ? [value1, value2] : [value1]);
- }
- break;
- case 'DISCONTINUITY':
- discontinuityCounter++;
- frag.tagList.push(['DIS']);
- break;
- case 'GAP':
- frag.gap = true;
- frag.tagList.push([tag]);
- break;
- case 'BITRATE':
- frag.tagList.push([tag, value1]);
- break;
- case 'DATERANGE':
- {
- var dateRangeAttr = new AttrList(value1);
- {
- substituteVariablesInAttributes(level, dateRangeAttr, ['ID', 'CLASS', 'START-DATE', 'END-DATE', 'SCTE35-CMD', 'SCTE35-OUT', 'SCTE35-IN']);
- substituteVariablesInAttributes(level, dateRangeAttr, dateRangeAttr.clientAttrs);
- }
- var dateRange = new DateRange(dateRangeAttr, level.dateRanges[dateRangeAttr.ID]);
- if (dateRange.isValid || level.skippedSegments) {
- level.dateRanges[dateRange.id] = dateRange;
- } else {
- logger.warn("Ignoring invalid DATERANGE tag: \"" + value1 + "\"");
- }
- // Add to fragment tag list for backwards compatibility (< v1.2.0)
- frag.tagList.push(['EXT-X-DATERANGE', value1]);
- break;
- }
- case 'DEFINE':
- {
- {
- var variableAttributes = new AttrList(value1);
- substituteVariablesInAttributes(level, variableAttributes, ['NAME', 'VALUE', 'IMPORT', 'QUERYPARAM']);
- if ('IMPORT' in variableAttributes) {
- importVariableDefinition(level, variableAttributes, multivariantVariableList);
- } else {
- addVariableDefinition(level, variableAttributes, baseurl);
- }
- }
- break;
- }
- case 'DISCONTINUITY-SEQUENCE':
- discontinuityCounter = parseInt(value1);
- break;
- case 'KEY':
- {
- var levelKey = parseKey(value1, baseurl, level);
- if (levelKey.isSupported()) {
- if (levelKey.method === 'NONE') {
- levelkeys = undefined;
- break;
- }
- if (!levelkeys) {
- levelkeys = {};
- }
- if (levelkeys[levelKey.keyFormat]) {
- levelkeys = _extends({}, levelkeys);
- }
- levelkeys[levelKey.keyFormat] = levelKey;
- } else {
- logger.warn("[Keys] Ignoring invalid EXT-X-KEY tag: \"" + value1 + "\"");
- }
- break;
- }
- case 'START':
- level.startTimeOffset = parseStartTimeOffset(value1);
- break;
- case 'MAP':
- {
- var mapAttrs = new AttrList(value1);
- {
- substituteVariablesInAttributes(level, mapAttrs, ['BYTERANGE', 'URI']);
- }
- if (frag.duration) {
- // Initial segment tag is after segment duration tag.
- // #EXTINF: 6.0
- // #EXT-X-MAP:URI="init.mp4
- var init = new Fragment(type, baseurl);
- setInitSegment(init, mapAttrs, id, levelkeys);
- currentInitSegment = init;
- frag.initSegment = currentInitSegment;
- if (currentInitSegment.rawProgramDateTime && !frag.rawProgramDateTime) {
- frag.rawProgramDateTime = currentInitSegment.rawProgramDateTime;
- }
- } else {
- // Initial segment tag is before segment duration tag
- // Handle case where EXT-X-MAP is declared after EXT-X-BYTERANGE
- var end = frag.byteRangeEndOffset;
- if (end) {
- var start = frag.byteRangeStartOffset;
- nextByteRange = end - start + "@" + start;
- } else {
- nextByteRange = null;
- }
- setInitSegment(frag, mapAttrs, id, levelkeys);
- currentInitSegment = frag;
- createNextFrag = true;
- }
- break;
- }
- case 'SERVER-CONTROL':
- {
- var serverControlAttrs = new AttrList(value1);
- level.canBlockReload = serverControlAttrs.bool('CAN-BLOCK-RELOAD');
- level.canSkipUntil = serverControlAttrs.optionalFloat('CAN-SKIP-UNTIL', 0);
- level.canSkipDateRanges = level.canSkipUntil > 0 && serverControlAttrs.bool('CAN-SKIP-DATERANGES');
- level.partHoldBack = serverControlAttrs.optionalFloat('PART-HOLD-BACK', 0);
- level.holdBack = serverControlAttrs.optionalFloat('HOLD-BACK', 0);
- break;
- }
- case 'PART-INF':
- {
- var partInfAttrs = new AttrList(value1);
- level.partTarget = partInfAttrs.decimalFloatingPoint('PART-TARGET');
- break;
- }
- case 'PART':
- {
- var partList = level.partList;
- if (!partList) {
- partList = level.partList = [];
- }
- var previousFragmentPart = currentPart > 0 ? partList[partList.length - 1] : undefined;
- var index = currentPart++;
- var partAttrs = new AttrList(value1);
- {
- substituteVariablesInAttributes(level, partAttrs, ['BYTERANGE', 'URI']);
- }
- var part = new Part(partAttrs, frag, baseurl, index, previousFragmentPart);
- partList.push(part);
- frag.duration += part.duration;
- break;
- }
- case 'PRELOAD-HINT':
- {
- var preloadHintAttrs = new AttrList(value1);
- {
- substituteVariablesInAttributes(level, preloadHintAttrs, ['URI']);
- }
- level.preloadHint = preloadHintAttrs;
- break;
- }
- case 'RENDITION-REPORT':
- {
- var renditionReportAttrs = new AttrList(value1);
- {
- substituteVariablesInAttributes(level, renditionReportAttrs, ['URI']);
- }
- level.renditionReports = level.renditionReports || [];
- level.renditionReports.push(renditionReportAttrs);
- break;
- }
- default:
- logger.warn("line parsed but not handled: " + result);
- break;
- }
- }
- }
- if (prevFrag && !prevFrag.relurl) {
- fragments.pop();
- totalduration -= prevFrag.duration;
- if (level.partList) {
- level.fragmentHint = prevFrag;
- }
- } else if (level.partList) {
- assignProgramDateTime(frag, prevFrag);
- frag.cc = discontinuityCounter;
- level.fragmentHint = frag;
- if (levelkeys) {
- setFragLevelKeys(frag, levelkeys, level);
- }
- }
- var fragmentLength = fragments.length;
- var firstFragment = fragments[0];
- var lastFragment = fragments[fragmentLength - 1];
- totalduration += level.skippedSegments * level.targetduration;
- if (totalduration > 0 && fragmentLength && lastFragment) {
- level.averagetargetduration = totalduration / fragmentLength;
- var lastSn = lastFragment.sn;
- level.endSN = lastSn !== 'initSegment' ? lastSn : 0;
- if (!level.live) {
- lastFragment.endList = true;
- }
- if (firstFragment) {
- level.startCC = firstFragment.cc;
- }
- } else {
- level.endSN = 0;
- level.startCC = 0;
- }
- if (level.fragmentHint) {
- totalduration += level.fragmentHint.duration;
- }
- level.totalduration = totalduration;
- level.endCC = discontinuityCounter;
-
- /**
- * Backfill any missing PDT values
- * "If the first EXT-X-PROGRAM-DATE-TIME tag in a Playlist appears after
- * one or more Media Segment URIs, the client SHOULD extrapolate
- * backward from that tag (using EXTINF durations and/or media
- * timestamps) to associate dates with those segments."
- * We have already extrapolated forward, but all fragments up to the first instance of PDT do not have their PDTs
- * computed.
- */
- if (firstPdtIndex > 0) {
- backfillProgramDateTimes(fragments, firstPdtIndex);
- }
- return level;
- };
- return M3U8Parser;
- }();
- function parseKey(keyTagAttributes, baseurl, parsed) {
- var _keyAttrs$METHOD, _keyAttrs$KEYFORMAT;
- // https://tools.ietf.org/html/rfc8216#section-4.3.2.4
- var keyAttrs = new AttrList(keyTagAttributes);
- {
- substituteVariablesInAttributes(parsed, keyAttrs, ['KEYFORMAT', 'KEYFORMATVERSIONS', 'URI', 'IV', 'URI']);
- }
- var decryptmethod = (_keyAttrs$METHOD = keyAttrs.METHOD) != null ? _keyAttrs$METHOD : '';
- var decrypturi = keyAttrs.URI;
- var decryptiv = keyAttrs.hexadecimalInteger('IV');
- var decryptkeyformatversions = keyAttrs.KEYFORMATVERSIONS;
- // From RFC: This attribute is OPTIONAL; its absence indicates an implicit value of "identity".
- var decryptkeyformat = (_keyAttrs$KEYFORMAT = keyAttrs.KEYFORMAT) != null ? _keyAttrs$KEYFORMAT : 'identity';
- if (decrypturi && keyAttrs.IV && !decryptiv) {
- logger.error("Invalid IV: " + keyAttrs.IV);
- }
- // If decrypturi is a URI with a scheme, then baseurl will be ignored
- // No uri is allowed when METHOD is NONE
- var resolvedUri = decrypturi ? M3U8Parser.resolve(decrypturi, baseurl) : '';
- var keyFormatVersions = (decryptkeyformatversions ? decryptkeyformatversions : '1').split('/').map(Number).filter(Number.isFinite);
- return new LevelKey(decryptmethod, resolvedUri, decryptkeyformat, keyFormatVersions, decryptiv);
- }
- function parseStartTimeOffset(startAttributes) {
- var startAttrs = new AttrList(startAttributes);
- var startTimeOffset = startAttrs.decimalFloatingPoint('TIME-OFFSET');
- if (isFiniteNumber(startTimeOffset)) {
- return startTimeOffset;
- }
- return null;
- }
- function setCodecs(codecsAttributeValue, level) {
- var codecs = (codecsAttributeValue || '').split(/[ ,]+/).filter(function (c) {
- return c;
- });
- ['video', 'audio', 'text'].forEach(function (type) {
- var filtered = codecs.filter(function (codec) {
- return isCodecType(codec, type);
- });
- if (filtered.length) {
- // Comma separated list of all codecs for type
- level[type + "Codec"] = filtered.join(',');
- // Remove known codecs so that only unknownCodecs are left after iterating through each type
- codecs = codecs.filter(function (codec) {
- return filtered.indexOf(codec) === -1;
- });
- }
- });
- level.unknownCodecs = codecs;
- }
- function assignCodec(media, groupItem, codecProperty) {
- var codecValue = groupItem[codecProperty];
- if (codecValue) {
- media[codecProperty] = codecValue;
- }
- }
- function backfillProgramDateTimes(fragments, firstPdtIndex) {
- var fragPrev = fragments[firstPdtIndex];
- for (var i = firstPdtIndex; i--;) {
- var frag = fragments[i];
- // Exit on delta-playlist skipped segments
- if (!frag) {
- return;
- }
- frag.programDateTime = fragPrev.programDateTime - frag.duration * 1000;
- fragPrev = frag;
- }
- }
- function assignProgramDateTime(frag, prevFrag) {
- if (frag.rawProgramDateTime) {
- frag.programDateTime = Date.parse(frag.rawProgramDateTime);
- } else if (prevFrag != null && prevFrag.programDateTime) {
- frag.programDateTime = prevFrag.endProgramDateTime;
- }
- if (!isFiniteNumber(frag.programDateTime)) {
- frag.programDateTime = null;
- frag.rawProgramDateTime = null;
- }
- }
- function setInitSegment(frag, mapAttrs, id, levelkeys) {
- frag.relurl = mapAttrs.URI;
- if (mapAttrs.BYTERANGE) {
- frag.setByteRange(mapAttrs.BYTERANGE);
- }
- frag.level = id;
- frag.sn = 'initSegment';
- if (levelkeys) {
- frag.levelkeys = levelkeys;
- }
- frag.initSegment = null;
- }
- function setFragLevelKeys(frag, levelkeys, level) {
- frag.levelkeys = levelkeys;
- var encryptedFragments = level.encryptedFragments;
- if ((!encryptedFragments.length || encryptedFragments[encryptedFragments.length - 1].levelkeys !== levelkeys) && Object.keys(levelkeys).some(function (format) {
- return levelkeys[format].isCommonEncryption;
- })) {
- encryptedFragments.push(frag);
- }
- }
-
- var PlaylistContextType = {
- MANIFEST: "manifest",
- LEVEL: "level",
- AUDIO_TRACK: "audioTrack",
- SUBTITLE_TRACK: "subtitleTrack"
- };
- var PlaylistLevelType = {
- MAIN: "main",
- AUDIO: "audio",
- SUBTITLE: "subtitle"
- };
-
- function mapContextToLevelType(context) {
- var type = context.type;
- switch (type) {
- case PlaylistContextType.AUDIO_TRACK:
- return PlaylistLevelType.AUDIO;
- case PlaylistContextType.SUBTITLE_TRACK:
- return PlaylistLevelType.SUBTITLE;
- default:
- return PlaylistLevelType.MAIN;
- }
- }
- function getResponseUrl(response, context) {
- var url = response.url;
- // responseURL not supported on some browsers (it is used to detect URL redirection)
- // data-uri mode also not supported (but no need to detect redirection)
- if (url === undefined || url.indexOf('data:') === 0) {
- // fallback to initial URL
- url = context.url;
- }
- return url;
- }
- var PlaylistLoader = /*#__PURE__*/function () {
- function PlaylistLoader(hls) {
- this.hls = void 0;
- this.loaders = Object.create(null);
- this.variableList = null;
- this.hls = hls;
- this.registerListeners();
- }
- var _proto = PlaylistLoader.prototype;
- _proto.startLoad = function startLoad(startPosition) {};
- _proto.stopLoad = function stopLoad() {
- this.destroyInternalLoaders();
- };
- _proto.registerListeners = function registerListeners() {
- var hls = this.hls;
- hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.on(Events.LEVEL_LOADING, this.onLevelLoading, this);
- hls.on(Events.AUDIO_TRACK_LOADING, this.onAudioTrackLoading, this);
- hls.on(Events.SUBTITLE_TRACK_LOADING, this.onSubtitleTrackLoading, this);
- };
- _proto.unregisterListeners = function unregisterListeners() {
- var hls = this.hls;
- hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.off(Events.LEVEL_LOADING, this.onLevelLoading, this);
- hls.off(Events.AUDIO_TRACK_LOADING, this.onAudioTrackLoading, this);
- hls.off(Events.SUBTITLE_TRACK_LOADING, this.onSubtitleTrackLoading, this);
- }
-
- /**
- * Returns defaults or configured loader-type overloads (pLoader and loader config params)
- */;
- _proto.createInternalLoader = function createInternalLoader(context) {
- var config = this.hls.config;
- var PLoader = config.pLoader;
- var Loader = config.loader;
- var InternalLoader = PLoader || Loader;
- var loader = new InternalLoader(config);
- this.loaders[context.type] = loader;
- return loader;
- };
- _proto.getInternalLoader = function getInternalLoader(context) {
- return this.loaders[context.type];
- };
- _proto.resetInternalLoader = function resetInternalLoader(contextType) {
- if (this.loaders[contextType]) {
- delete this.loaders[contextType];
- }
- }
-
- /**
- * Call `destroy` on all internal loader instances mapped (one per context type)
- */;
- _proto.destroyInternalLoaders = function destroyInternalLoaders() {
- for (var contextType in this.loaders) {
- var loader = this.loaders[contextType];
- if (loader) {
- loader.destroy();
- }
- this.resetInternalLoader(contextType);
- }
- };
- _proto.destroy = function destroy() {
- this.variableList = null;
- this.unregisterListeners();
- this.destroyInternalLoaders();
- };
- _proto.onManifestLoading = function onManifestLoading(event, data) {
- var url = data.url;
- this.variableList = null;
- this.load({
- id: null,
- level: 0,
- responseType: 'text',
- type: PlaylistContextType.MANIFEST,
- url: url,
- deliveryDirectives: null
- });
- };
- _proto.onLevelLoading = function onLevelLoading(event, data) {
- var id = data.id,
- level = data.level,
- pathwayId = data.pathwayId,
- url = data.url,
- deliveryDirectives = data.deliveryDirectives;
- this.load({
- id: id,
- level: level,
- pathwayId: pathwayId,
- responseType: 'text',
- type: PlaylistContextType.LEVEL,
- url: url,
- deliveryDirectives: deliveryDirectives
- });
- };
- _proto.onAudioTrackLoading = function onAudioTrackLoading(event, data) {
- var id = data.id,
- groupId = data.groupId,
- url = data.url,
- deliveryDirectives = data.deliveryDirectives;
- this.load({
- id: id,
- groupId: groupId,
- level: null,
- responseType: 'text',
- type: PlaylistContextType.AUDIO_TRACK,
- url: url,
- deliveryDirectives: deliveryDirectives
- });
- };
- _proto.onSubtitleTrackLoading = function onSubtitleTrackLoading(event, data) {
- var id = data.id,
- groupId = data.groupId,
- url = data.url,
- deliveryDirectives = data.deliveryDirectives;
- this.load({
- id: id,
- groupId: groupId,
- level: null,
- responseType: 'text',
- type: PlaylistContextType.SUBTITLE_TRACK,
- url: url,
- deliveryDirectives: deliveryDirectives
- });
- };
- _proto.load = function load(context) {
- var _context$deliveryDire,
- _this = this;
- var config = this.hls.config;
-
- // logger.debug(`[playlist-loader]: Loading playlist of type ${context.type}, level: ${context.level}, id: ${context.id}`);
-
- // Check if a loader for this context already exists
- var loader = this.getInternalLoader(context);
- if (loader) {
- var loaderContext = loader.context;
- if (loaderContext && loaderContext.url === context.url && loaderContext.level === context.level) {
- // same URL can't overlap
- logger.trace('[playlist-loader]: playlist request ongoing');
- return;
- }
- logger.log("[playlist-loader]: aborting previous loader for type: " + context.type);
- loader.abort();
- }
-
- // apply different configs for retries depending on
- // context (manifest, level, audio/subs playlist)
- var loadPolicy;
- if (context.type === PlaylistContextType.MANIFEST) {
- loadPolicy = config.manifestLoadPolicy.default;
- } else {
- loadPolicy = _extends({}, config.playlistLoadPolicy.default, {
- timeoutRetry: null,
- errorRetry: null
- });
- }
- loader = this.createInternalLoader(context);
-
- // Override level/track timeout for LL-HLS requests
- // (the default of 10000ms is counter productive to blocking playlist reload requests)
- if (isFiniteNumber((_context$deliveryDire = context.deliveryDirectives) == null ? void 0 : _context$deliveryDire.part)) {
- var levelDetails;
- if (context.type === PlaylistContextType.LEVEL && context.level !== null) {
- levelDetails = this.hls.levels[context.level].details;
- } else if (context.type === PlaylistContextType.AUDIO_TRACK && context.id !== null) {
- levelDetails = this.hls.audioTracks[context.id].details;
- } else if (context.type === PlaylistContextType.SUBTITLE_TRACK && context.id !== null) {
- levelDetails = this.hls.subtitleTracks[context.id].details;
- }
- if (levelDetails) {
- var partTarget = levelDetails.partTarget;
- var targetDuration = levelDetails.targetduration;
- if (partTarget && targetDuration) {
- var maxLowLatencyPlaylistRefresh = Math.max(partTarget * 3, targetDuration * 0.8) * 1000;
- loadPolicy = _extends({}, loadPolicy, {
- maxTimeToFirstByteMs: Math.min(maxLowLatencyPlaylistRefresh, loadPolicy.maxTimeToFirstByteMs),
- maxLoadTimeMs: Math.min(maxLowLatencyPlaylistRefresh, loadPolicy.maxTimeToFirstByteMs)
- });
- }
- }
- }
- var legacyRetryCompatibility = loadPolicy.errorRetry || loadPolicy.timeoutRetry || {};
- var loaderConfig = {
- loadPolicy: loadPolicy,
- timeout: loadPolicy.maxLoadTimeMs,
- maxRetry: legacyRetryCompatibility.maxNumRetry || 0,
- retryDelay: legacyRetryCompatibility.retryDelayMs || 0,
- maxRetryDelay: legacyRetryCompatibility.maxRetryDelayMs || 0
- };
- var loaderCallbacks = {
- onSuccess: function onSuccess(response, stats, context, networkDetails) {
- var loader = _this.getInternalLoader(context);
- _this.resetInternalLoader(context.type);
- var string = response.data;
-
- // Validate if it is an M3U8 at all
- if (string.indexOf('#EXTM3U') !== 0) {
- _this.handleManifestParsingError(response, context, new Error('no EXTM3U delimiter'), networkDetails || null, stats);
- return;
- }
- stats.parsing.start = performance.now();
- if (M3U8Parser.isMediaPlaylist(string)) {
- _this.handleTrackOrLevelPlaylist(response, stats, context, networkDetails || null, loader);
- } else {
- _this.handleMasterPlaylist(response, stats, context, networkDetails);
- }
- },
- onError: function onError(response, context, networkDetails, stats) {
- _this.handleNetworkError(context, networkDetails, false, response, stats);
- },
- onTimeout: function onTimeout(stats, context, networkDetails) {
- _this.handleNetworkError(context, networkDetails, true, undefined, stats);
- }
- };
-
- // logger.debug(`[playlist-loader]: Calling internal loader delegate for URL: ${context.url}`);
-
- loader.load(context, loaderConfig, loaderCallbacks);
- };
- _proto.handleMasterPlaylist = function handleMasterPlaylist(response, stats, context, networkDetails) {
- var hls = this.hls;
- var string = response.data;
- var url = getResponseUrl(response, context);
- var parsedResult = M3U8Parser.parseMasterPlaylist(string, url);
- if (parsedResult.playlistParsingError) {
- this.handleManifestParsingError(response, context, parsedResult.playlistParsingError, networkDetails, stats);
- return;
- }
- var contentSteering = parsedResult.contentSteering,
- levels = parsedResult.levels,
- sessionData = parsedResult.sessionData,
- sessionKeys = parsedResult.sessionKeys,
- startTimeOffset = parsedResult.startTimeOffset,
- variableList = parsedResult.variableList;
- this.variableList = variableList;
- var _M3U8Parser$parseMast = M3U8Parser.parseMasterPlaylistMedia(string, url, parsedResult),
- _M3U8Parser$parseMast2 = _M3U8Parser$parseMast.AUDIO,
- audioTracks = _M3U8Parser$parseMast2 === void 0 ? [] : _M3U8Parser$parseMast2,
- subtitles = _M3U8Parser$parseMast.SUBTITLES,
- captions = _M3U8Parser$parseMast['CLOSED-CAPTIONS'];
- if (audioTracks.length) {
- // check if we have found an audio track embedded in main playlist (audio track without URI attribute)
- var embeddedAudioFound = audioTracks.some(function (audioTrack) {
- return !audioTrack.url;
- });
-
- // if no embedded audio track defined, but audio codec signaled in quality level,
- // we need to signal this main audio track this could happen with playlists with
- // alt audio rendition in which quality levels (main)
- // contains both audio+video. but with mixed audio track not signaled
- if (!embeddedAudioFound && levels[0].audioCodec && !levels[0].attrs.AUDIO) {
- logger.log('[playlist-loader]: audio codec signaled in quality level, but no embedded audio track signaled, create one');
- audioTracks.unshift({
- type: 'main',
- name: 'main',
- groupId: 'main',
- default: false,
- autoselect: false,
- forced: false,
- id: -1,
- attrs: new AttrList({}),
- bitrate: 0,
- url: ''
- });
- }
- }
- hls.trigger(Events.MANIFEST_LOADED, {
- levels: levels,
- audioTracks: audioTracks,
- subtitles: subtitles,
- captions: captions,
- contentSteering: contentSteering,
- url: url,
- stats: stats,
- networkDetails: networkDetails,
- sessionData: sessionData,
- sessionKeys: sessionKeys,
- startTimeOffset: startTimeOffset,
- variableList: variableList
- });
- };
- _proto.handleTrackOrLevelPlaylist = function handleTrackOrLevelPlaylist(response, stats, context, networkDetails, loader) {
- var hls = this.hls;
- var id = context.id,
- level = context.level,
- type = context.type;
- var url = getResponseUrl(response, context);
- var levelUrlId = 0;
- var levelId = isFiniteNumber(level) ? level : isFiniteNumber(id) ? id : 0;
- var levelType = mapContextToLevelType(context);
- var levelDetails = M3U8Parser.parseLevelPlaylist(response.data, url, levelId, levelType, levelUrlId, this.variableList);
-
- // We have done our first request (Manifest-type) and receive
- // not a master playlist but a chunk-list (track/level)
- // We fire the manifest-loaded event anyway with the parsed level-details
- // by creating a single-level structure for it.
- if (type === PlaylistContextType.MANIFEST) {
- var singleLevel = {
- attrs: new AttrList({}),
- bitrate: 0,
- details: levelDetails,
- name: '',
- url: url
- };
- hls.trigger(Events.MANIFEST_LOADED, {
- levels: [singleLevel],
- audioTracks: [],
- url: url,
- stats: stats,
- networkDetails: networkDetails,
- sessionData: null,
- sessionKeys: null,
- contentSteering: null,
- startTimeOffset: null,
- variableList: null
- });
- }
-
- // save parsing time
- stats.parsing.end = performance.now();
-
- // extend the context with the new levelDetails property
- context.levelDetails = levelDetails;
- this.handlePlaylistLoaded(levelDetails, response, stats, context, networkDetails, loader);
- };
- _proto.handleManifestParsingError = function handleManifestParsingError(response, context, error, networkDetails, stats) {
- this.hls.trigger(Events.ERROR, {
- type: ErrorTypes.NETWORK_ERROR,
- details: ErrorDetails.MANIFEST_PARSING_ERROR,
- fatal: context.type === PlaylistContextType.MANIFEST,
- url: response.url,
- err: error,
- error: error,
- reason: error.message,
- response: response,
- context: context,
- networkDetails: networkDetails,
- stats: stats
- });
- };
- _proto.handleNetworkError = function handleNetworkError(context, networkDetails, timeout, response, stats) {
- if (timeout === void 0) {
- timeout = false;
- }
- var message = "A network " + (timeout ? 'timeout' : 'error' + (response ? ' (status ' + response.code + ')' : '')) + " occurred while loading " + context.type;
- if (context.type === PlaylistContextType.LEVEL) {
- message += ": " + context.level + " id: " + context.id;
- } else if (context.type === PlaylistContextType.AUDIO_TRACK || context.type === PlaylistContextType.SUBTITLE_TRACK) {
- message += " id: " + context.id + " group-id: \"" + context.groupId + "\"";
- }
- var error = new Error(message);
- logger.warn("[playlist-loader]: " + message);
- var details = ErrorDetails.UNKNOWN;
- var fatal = false;
- var loader = this.getInternalLoader(context);
- switch (context.type) {
- case PlaylistContextType.MANIFEST:
- details = timeout ? ErrorDetails.MANIFEST_LOAD_TIMEOUT : ErrorDetails.MANIFEST_LOAD_ERROR;
- fatal = true;
- break;
- case PlaylistContextType.LEVEL:
- details = timeout ? ErrorDetails.LEVEL_LOAD_TIMEOUT : ErrorDetails.LEVEL_LOAD_ERROR;
- fatal = false;
- break;
- case PlaylistContextType.AUDIO_TRACK:
- details = timeout ? ErrorDetails.AUDIO_TRACK_LOAD_TIMEOUT : ErrorDetails.AUDIO_TRACK_LOAD_ERROR;
- fatal = false;
- break;
- case PlaylistContextType.SUBTITLE_TRACK:
- details = timeout ? ErrorDetails.SUBTITLE_TRACK_LOAD_TIMEOUT : ErrorDetails.SUBTITLE_LOAD_ERROR;
- fatal = false;
- break;
- }
- if (loader) {
- this.resetInternalLoader(context.type);
- }
- var errorData = {
- type: ErrorTypes.NETWORK_ERROR,
- details: details,
- fatal: fatal,
- url: context.url,
- loader: loader,
- context: context,
- error: error,
- networkDetails: networkDetails,
- stats: stats
- };
- if (response) {
- var url = (networkDetails == null ? void 0 : networkDetails.url) || context.url;
- errorData.response = _objectSpread2({
- url: url,
- data: undefined
- }, response);
- }
- this.hls.trigger(Events.ERROR, errorData);
- };
- _proto.handlePlaylistLoaded = function handlePlaylistLoaded(levelDetails, response, stats, context, networkDetails, loader) {
- var hls = this.hls;
- var type = context.type,
- level = context.level,
- id = context.id,
- groupId = context.groupId,
- deliveryDirectives = context.deliveryDirectives;
- var url = getResponseUrl(response, context);
- var parent = mapContextToLevelType(context);
- var levelIndex = typeof context.level === 'number' && parent === PlaylistLevelType.MAIN ? level : undefined;
- if (!levelDetails.fragments.length) {
- var _error = new Error('No Segments found in Playlist');
- hls.trigger(Events.ERROR, {
- type: ErrorTypes.NETWORK_ERROR,
- details: ErrorDetails.LEVEL_EMPTY_ERROR,
- fatal: false,
- url: url,
- error: _error,
- reason: _error.message,
- response: response,
- context: context,
- level: levelIndex,
- parent: parent,
- networkDetails: networkDetails,
- stats: stats
- });
- return;
- }
- if (!levelDetails.targetduration) {
- levelDetails.playlistParsingError = new Error('Missing Target Duration');
- }
- var error = levelDetails.playlistParsingError;
- if (error) {
- hls.trigger(Events.ERROR, {
- type: ErrorTypes.NETWORK_ERROR,
- details: ErrorDetails.LEVEL_PARSING_ERROR,
- fatal: false,
- url: url,
- error: error,
- reason: error.message,
- response: response,
- context: context,
- level: levelIndex,
- parent: parent,
- networkDetails: networkDetails,
- stats: stats
- });
- return;
- }
- if (levelDetails.live && loader) {
- if (loader.getCacheAge) {
- levelDetails.ageHeader = loader.getCacheAge() || 0;
- }
- if (!loader.getCacheAge || isNaN(levelDetails.ageHeader)) {
- levelDetails.ageHeader = 0;
- }
- }
- switch (type) {
- case PlaylistContextType.MANIFEST:
- case PlaylistContextType.LEVEL:
- hls.trigger(Events.LEVEL_LOADED, {
- details: levelDetails,
- level: levelIndex || 0,
- id: id || 0,
- stats: stats,
- networkDetails: networkDetails,
- deliveryDirectives: deliveryDirectives
- });
- break;
- case PlaylistContextType.AUDIO_TRACK:
- hls.trigger(Events.AUDIO_TRACK_LOADED, {
- details: levelDetails,
- id: id || 0,
- groupId: groupId || '',
- stats: stats,
- networkDetails: networkDetails,
- deliveryDirectives: deliveryDirectives
- });
- break;
- case PlaylistContextType.SUBTITLE_TRACK:
- hls.trigger(Events.SUBTITLE_TRACK_LOADED, {
- details: levelDetails,
- id: id || 0,
- groupId: groupId || '',
- stats: stats,
- networkDetails: networkDetails,
- deliveryDirectives: deliveryDirectives
- });
- break;
- }
- };
- return PlaylistLoader;
- }();
-
- function sendAddTrackEvent(track, videoEl) {
- var event;
- try {
- event = new Event('addtrack');
- } catch (err) {
- // for IE11
- event = document.createEvent('Event');
- event.initEvent('addtrack', false, false);
- }
- event.track = track;
- videoEl.dispatchEvent(event);
- }
- function addCueToTrack(track, cue) {
- // Sometimes there are cue overlaps on segmented vtts so the same
- // cue can appear more than once in different vtt files.
- // This avoid showing duplicated cues with same timecode and text.
- var mode = track.mode;
- if (mode === 'disabled') {
- track.mode = 'hidden';
- }
- if (track.cues && !track.cues.getCueById(cue.id)) {
- try {
- track.addCue(cue);
- if (!track.cues.getCueById(cue.id)) {
- throw new Error("addCue is failed for: " + cue);
- }
- } catch (err) {
- logger.debug("[texttrack-utils]: " + err);
- try {
- var textTrackCue = new self.TextTrackCue(cue.startTime, cue.endTime, cue.text);
- textTrackCue.id = cue.id;
- track.addCue(textTrackCue);
- } catch (err2) {
- logger.debug("[texttrack-utils]: Legacy TextTrackCue fallback failed: " + err2);
- }
- }
- }
- if (mode === 'disabled') {
- track.mode = mode;
- }
- }
- function clearCurrentCues(track) {
- // When track.mode is disabled, track.cues will be null.
- // To guarantee the removal of cues, we need to temporarily
- // change the mode to hidden
- var mode = track.mode;
- if (mode === 'disabled') {
- track.mode = 'hidden';
- }
- if (track.cues) {
- for (var i = track.cues.length; i--;) {
- track.removeCue(track.cues[i]);
- }
- }
- if (mode === 'disabled') {
- track.mode = mode;
- }
- }
- function removeCuesInRange(track, start, end, predicate) {
- var mode = track.mode;
- if (mode === 'disabled') {
- track.mode = 'hidden';
- }
- if (track.cues && track.cues.length > 0) {
- var cues = getCuesInRange(track.cues, start, end);
- for (var i = 0; i < cues.length; i++) {
- if (!predicate || predicate(cues[i])) {
- track.removeCue(cues[i]);
- }
- }
- }
- if (mode === 'disabled') {
- track.mode = mode;
- }
- }
-
- // Find first cue starting after given time.
- // Modified version of binary search O(log(n)).
- function getFirstCueIndexAfterTime(cues, time) {
- // If first cue starts after time, start there
- if (time < cues[0].startTime) {
- return 0;
- }
- // If the last cue ends before time there is no overlap
- var len = cues.length - 1;
- if (time > cues[len].endTime) {
- return -1;
- }
- var left = 0;
- var right = len;
- while (left <= right) {
- var mid = Math.floor((right + left) / 2);
- if (time < cues[mid].startTime) {
- right = mid - 1;
- } else if (time > cues[mid].startTime && left < len) {
- left = mid + 1;
- } else {
- // If it's not lower or higher, it must be equal.
- return mid;
- }
- }
- // At this point, left and right have swapped.
- // No direct match was found, left or right element must be the closest. Check which one has the smallest diff.
- return cues[left].startTime - time < time - cues[right].startTime ? left : right;
- }
- function getCuesInRange(cues, start, end) {
- var cuesFound = [];
- var firstCueInRange = getFirstCueIndexAfterTime(cues, start);
- if (firstCueInRange > -1) {
- for (var i = firstCueInRange, len = cues.length; i < len; i++) {
- var _cue = cues[i];
- if (_cue.startTime >= start && _cue.endTime <= end) {
- cuesFound.push(_cue);
- } else if (_cue.startTime > end) {
- return cuesFound;
- }
- }
- }
- return cuesFound;
- }
- function filterSubtitleTracks(textTrackList) {
- var tracks = [];
- for (var i = 0; i < textTrackList.length; i++) {
- var track = textTrackList[i];
- // Edge adds a track without a label; we don't want to use it
- if ((track.kind === 'subtitles' || track.kind === 'captions') && track.label) {
- tracks.push(textTrackList[i]);
- }
- }
- return tracks;
- }
-
- var MetadataSchema = {
- audioId3: "org.id3",
- dateRange: "com.apple.quicktime.HLS",
- emsg: "https://aomedia.org/emsg/ID3"
- };
-
- var MIN_CUE_DURATION = 0.25;
- function getCueClass() {
- if (typeof self === 'undefined') return undefined;
- return self.VTTCue || self.TextTrackCue;
- }
- function createCueWithDataFields(Cue, startTime, endTime, data, type) {
- var cue = new Cue(startTime, endTime, '');
- try {
- cue.value = data;
- if (type) {
- cue.type = type;
- }
- } catch (e) {
- cue = new Cue(startTime, endTime, JSON.stringify(type ? _objectSpread2({
- type: type
- }, data) : data));
- }
- return cue;
- }
-
- // VTTCue latest draft allows an infinite duration, fallback
- // to MAX_VALUE if necessary
- var MAX_CUE_ENDTIME = function () {
- var Cue = getCueClass();
- try {
- Cue && new Cue(0, Number.POSITIVE_INFINITY, '');
- } catch (e) {
- return Number.MAX_VALUE;
- }
- return Number.POSITIVE_INFINITY;
- }();
- function dateRangeDateToTimelineSeconds(date, offset) {
- return date.getTime() / 1000 - offset;
- }
- function hexToArrayBuffer(str) {
- return Uint8Array.from(str.replace(/^0x/, '').replace(/([\da-fA-F]{2}) ?/g, '0x$1 ').replace(/ +$/, '').split(' ')).buffer;
- }
- var ID3TrackController = /*#__PURE__*/function () {
- function ID3TrackController(hls) {
- this.hls = void 0;
- this.id3Track = null;
- this.media = null;
- this.dateRangeCuesAppended = {};
- this.hls = hls;
- this._registerListeners();
- }
- var _proto = ID3TrackController.prototype;
- _proto.destroy = function destroy() {
- this._unregisterListeners();
- this.id3Track = null;
- this.media = null;
- this.dateRangeCuesAppended = {};
- // @ts-ignore
- this.hls = null;
- };
- _proto._registerListeners = function _registerListeners() {
- var hls = this.hls;
- hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.on(Events.FRAG_PARSING_METADATA, this.onFragParsingMetadata, this);
- hls.on(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
- hls.on(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
- };
- _proto._unregisterListeners = function _unregisterListeners() {
- var hls = this.hls;
- hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.off(Events.FRAG_PARSING_METADATA, this.onFragParsingMetadata, this);
- hls.off(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
- hls.off(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
- }
-
- // Add ID3 metatadata text track.
- ;
- _proto.onMediaAttached = function onMediaAttached(event, data) {
- this.media = data.media;
- };
- _proto.onMediaDetaching = function onMediaDetaching() {
- if (!this.id3Track) {
- return;
- }
- clearCurrentCues(this.id3Track);
- this.id3Track = null;
- this.media = null;
- this.dateRangeCuesAppended = {};
- };
- _proto.onManifestLoading = function onManifestLoading() {
- this.dateRangeCuesAppended = {};
- };
- _proto.createTrack = function createTrack(media) {
- var track = this.getID3Track(media.textTracks);
- track.mode = 'hidden';
- return track;
- };
- _proto.getID3Track = function getID3Track(textTracks) {
- if (!this.media) {
- return;
- }
- for (var i = 0; i < textTracks.length; i++) {
- var textTrack = textTracks[i];
- if (textTrack.kind === 'metadata' && textTrack.label === 'id3') {
- // send 'addtrack' when reusing the textTrack for metadata,
- // same as what we do for captions
- sendAddTrackEvent(textTrack, this.media);
- return textTrack;
- }
- }
- return this.media.addTextTrack('metadata', 'id3');
- };
- _proto.onFragParsingMetadata = function onFragParsingMetadata(event, data) {
- if (!this.media) {
- return;
- }
- var _this$hls$config = this.hls.config,
- enableEmsgMetadataCues = _this$hls$config.enableEmsgMetadataCues,
- enableID3MetadataCues = _this$hls$config.enableID3MetadataCues;
- if (!enableEmsgMetadataCues && !enableID3MetadataCues) {
- return;
- }
- var samples = data.samples;
-
- // create track dynamically
- if (!this.id3Track) {
- this.id3Track = this.createTrack(this.media);
- }
- var Cue = getCueClass();
- if (!Cue) {
- return;
- }
- for (var i = 0; i < samples.length; i++) {
- var type = samples[i].type;
- if (type === MetadataSchema.emsg && !enableEmsgMetadataCues || !enableID3MetadataCues) {
- continue;
- }
- var frames = getID3Frames(samples[i].data);
- if (frames) {
- var startTime = samples[i].pts;
- var endTime = startTime + samples[i].duration;
- if (endTime > MAX_CUE_ENDTIME) {
- endTime = MAX_CUE_ENDTIME;
- }
- var timeDiff = endTime - startTime;
- if (timeDiff <= 0) {
- endTime = startTime + MIN_CUE_DURATION;
- }
- for (var j = 0; j < frames.length; j++) {
- var frame = frames[j];
- // Safari doesn't put the timestamp frame in the TextTrack
- if (!isTimeStampFrame(frame)) {
- // add a bounds to any unbounded cues
- this.updateId3CueEnds(startTime, type);
- var cue = createCueWithDataFields(Cue, startTime, endTime, frame, type);
- if (cue) {
- this.id3Track.addCue(cue);
- }
- }
- }
- }
- }
- };
- _proto.updateId3CueEnds = function updateId3CueEnds(startTime, type) {
- var _this$id3Track;
- var cues = (_this$id3Track = this.id3Track) == null ? void 0 : _this$id3Track.cues;
- if (cues) {
- for (var i = cues.length; i--;) {
- var cue = cues[i];
- if (cue.type === type && cue.startTime < startTime && cue.endTime === MAX_CUE_ENDTIME) {
- cue.endTime = startTime;
- }
- }
- }
- };
- _proto.onBufferFlushing = function onBufferFlushing(event, _ref) {
- var startOffset = _ref.startOffset,
- endOffset = _ref.endOffset,
- type = _ref.type;
- var id3Track = this.id3Track,
- hls = this.hls;
- if (!hls) {
- return;
- }
- var _hls$config = hls.config,
- enableEmsgMetadataCues = _hls$config.enableEmsgMetadataCues,
- enableID3MetadataCues = _hls$config.enableID3MetadataCues;
- if (id3Track && (enableEmsgMetadataCues || enableID3MetadataCues)) {
- var predicate;
- if (type === 'audio') {
- predicate = function predicate(cue) {
- return cue.type === MetadataSchema.audioId3 && enableID3MetadataCues;
- };
- } else if (type === 'video') {
- predicate = function predicate(cue) {
- return cue.type === MetadataSchema.emsg && enableEmsgMetadataCues;
- };
- } else {
- predicate = function predicate(cue) {
- return cue.type === MetadataSchema.audioId3 && enableID3MetadataCues || cue.type === MetadataSchema.emsg && enableEmsgMetadataCues;
- };
- }
- removeCuesInRange(id3Track, startOffset, endOffset, predicate);
- }
- };
- _proto.onLevelUpdated = function onLevelUpdated(event, _ref2) {
- var _this = this;
- var details = _ref2.details;
- if (!this.media || !details.hasProgramDateTime || !this.hls.config.enableDateRangeMetadataCues) {
- return;
- }
- var dateRangeCuesAppended = this.dateRangeCuesAppended,
- id3Track = this.id3Track;
- var dateRanges = details.dateRanges;
- var ids = Object.keys(dateRanges);
- // Remove cues from track not found in details.dateRanges
- if (id3Track) {
- var idsToRemove = Object.keys(dateRangeCuesAppended).filter(function (id) {
- return !ids.includes(id);
- });
- var _loop = function _loop() {
- var id = idsToRemove[i];
- Object.keys(dateRangeCuesAppended[id].cues).forEach(function (key) {
- id3Track.removeCue(dateRangeCuesAppended[id].cues[key]);
- });
- delete dateRangeCuesAppended[id];
- };
- for (var i = idsToRemove.length; i--;) {
- _loop();
- }
- }
- // Exit if the playlist does not have Date Ranges or does not have Program Date Time
- var lastFragment = details.fragments[details.fragments.length - 1];
- if (ids.length === 0 || !isFiniteNumber(lastFragment == null ? void 0 : lastFragment.programDateTime)) {
- return;
- }
- if (!this.id3Track) {
- this.id3Track = this.createTrack(this.media);
- }
- var dateTimeOffset = lastFragment.programDateTime / 1000 - lastFragment.start;
- var Cue = getCueClass();
- var _loop2 = function _loop2() {
- var id = ids[_i];
- var dateRange = dateRanges[id];
- var startTime = dateRangeDateToTimelineSeconds(dateRange.startDate, dateTimeOffset);
-
- // Process DateRanges to determine end-time (known DURATION, END-DATE, or END-ON-NEXT)
- var appendedDateRangeCues = dateRangeCuesAppended[id];
- var cues = (appendedDateRangeCues == null ? void 0 : appendedDateRangeCues.cues) || {};
- var durationKnown = (appendedDateRangeCues == null ? void 0 : appendedDateRangeCues.durationKnown) || false;
- var endTime = MAX_CUE_ENDTIME;
- var endDate = dateRange.endDate;
- if (endDate) {
- endTime = dateRangeDateToTimelineSeconds(endDate, dateTimeOffset);
- durationKnown = true;
- } else if (dateRange.endOnNext && !durationKnown) {
- var nextDateRangeWithSameClass = ids.reduce(function (candidateDateRange, id) {
- if (id !== dateRange.id) {
- var otherDateRange = dateRanges[id];
- if (otherDateRange.class === dateRange.class && otherDateRange.startDate > dateRange.startDate && (!candidateDateRange || dateRange.startDate < candidateDateRange.startDate)) {
- return otherDateRange;
- }
- }
- return candidateDateRange;
- }, null);
- if (nextDateRangeWithSameClass) {
- endTime = dateRangeDateToTimelineSeconds(nextDateRangeWithSameClass.startDate, dateTimeOffset);
- durationKnown = true;
- }
- }
-
- // Create TextTrack Cues for each MetadataGroup Item (select DateRange attribute)
- // This is to emulate Safari HLS playback handling of DateRange tags
- var attributes = Object.keys(dateRange.attr);
- for (var j = 0; j < attributes.length; j++) {
- var key = attributes[j];
- if (!isDateRangeCueAttribute(key)) {
- continue;
- }
- var cue = cues[key];
- if (cue) {
- if (durationKnown && !appendedDateRangeCues.durationKnown) {
- cue.endTime = endTime;
- }
- } else if (Cue) {
- var data = dateRange.attr[key];
- if (isSCTE35Attribute(key)) {
- data = hexToArrayBuffer(data);
- }
- var _cue = createCueWithDataFields(Cue, startTime, endTime, {
- key: key,
- data: data
- }, MetadataSchema.dateRange);
- if (_cue) {
- _cue.id = id;
- _this.id3Track.addCue(_cue);
- cues[key] = _cue;
- }
- }
- }
-
- // Keep track of processed DateRanges by ID for updating cues with new DateRange tag attributes
- dateRangeCuesAppended[id] = {
- cues: cues,
- dateRange: dateRange,
- durationKnown: durationKnown
- };
- };
- for (var _i = 0; _i < ids.length; _i++) {
- _loop2();
- }
- };
- return ID3TrackController;
- }();
-
- var LatencyController = /*#__PURE__*/function () {
- function LatencyController(hls) {
- var _this = this;
- this.hls = void 0;
- this.config = void 0;
- this.media = null;
- this.levelDetails = null;
- this.currentTime = 0;
- this.stallCount = 0;
- this._latency = null;
- this.timeupdateHandler = function () {
- return _this.timeupdate();
- };
- this.hls = hls;
- this.config = hls.config;
- this.registerListeners();
- }
- var _proto = LatencyController.prototype;
- _proto.destroy = function destroy() {
- this.unregisterListeners();
- this.onMediaDetaching();
- this.levelDetails = null;
- // @ts-ignore
- this.hls = this.timeupdateHandler = null;
- };
- _proto.registerListeners = function registerListeners() {
- this.hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- this.hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- this.hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- this.hls.on(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
- this.hls.on(Events.ERROR, this.onError, this);
- };
- _proto.unregisterListeners = function unregisterListeners() {
- this.hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- this.hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- this.hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- this.hls.off(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
- this.hls.off(Events.ERROR, this.onError, this);
- };
- _proto.onMediaAttached = function onMediaAttached(event, data) {
- this.media = data.media;
- this.media.addEventListener('timeupdate', this.timeupdateHandler);
- };
- _proto.onMediaDetaching = function onMediaDetaching() {
- if (this.media) {
- this.media.removeEventListener('timeupdate', this.timeupdateHandler);
- this.media = null;
- }
- };
- _proto.onManifestLoading = function onManifestLoading() {
- this.levelDetails = null;
- this._latency = null;
- this.stallCount = 0;
- };
- _proto.onLevelUpdated = function onLevelUpdated(event, _ref) {
- var details = _ref.details;
- this.levelDetails = details;
- if (details.advanced) {
- this.timeupdate();
- }
- if (!details.live && this.media) {
- this.media.removeEventListener('timeupdate', this.timeupdateHandler);
- }
- };
- _proto.onError = function onError(event, data) {
- var _this$levelDetails;
- if (data.details !== ErrorDetails.BUFFER_STALLED_ERROR) {
- return;
- }
- this.stallCount++;
- if ((_this$levelDetails = this.levelDetails) != null && _this$levelDetails.live) {
- logger.warn('[playback-rate-controller]: Stall detected, adjusting target latency');
- }
- };
- _proto.timeupdate = function timeupdate() {
- var media = this.media,
- levelDetails = this.levelDetails;
- if (!media || !levelDetails) {
- return;
- }
- this.currentTime = media.currentTime;
- var latency = this.computeLatency();
- if (latency === null) {
- return;
- }
- this._latency = latency;
-
- // Adapt playbackRate to meet target latency in low-latency mode
- var _this$config = this.config,
- lowLatencyMode = _this$config.lowLatencyMode,
- maxLiveSyncPlaybackRate = _this$config.maxLiveSyncPlaybackRate;
- if (!lowLatencyMode || maxLiveSyncPlaybackRate === 1 || !levelDetails.live) {
- return;
- }
- var targetLatency = this.targetLatency;
- if (targetLatency === null) {
- return;
- }
- var distanceFromTarget = latency - targetLatency;
- // Only adjust playbackRate when within one target duration of targetLatency
- // and more than one second from under-buffering.
- // Playback further than one target duration from target can be considered DVR playback.
- var liveMinLatencyDuration = Math.min(this.maxLatency, targetLatency + levelDetails.targetduration);
- var inLiveRange = distanceFromTarget < liveMinLatencyDuration;
- if (inLiveRange && distanceFromTarget > 0.05 && this.forwardBufferLength > 1) {
- var max = Math.min(2, Math.max(1.0, maxLiveSyncPlaybackRate));
- var rate = Math.round(2 / (1 + Math.exp(-0.75 * distanceFromTarget - this.edgeStalled)) * 20) / 20;
- media.playbackRate = Math.min(max, Math.max(1, rate));
- } else if (media.playbackRate !== 1 && media.playbackRate !== 0) {
- media.playbackRate = 1;
- }
- };
- _proto.estimateLiveEdge = function estimateLiveEdge() {
- var levelDetails = this.levelDetails;
- if (levelDetails === null) {
- return null;
- }
- return levelDetails.edge + levelDetails.age;
- };
- _proto.computeLatency = function computeLatency() {
- var liveEdge = this.estimateLiveEdge();
- if (liveEdge === null) {
- return null;
- }
- return liveEdge - this.currentTime;
- };
- _createClass(LatencyController, [{
- key: "latency",
- get: function get() {
- return this._latency || 0;
- }
- }, {
- key: "maxLatency",
- get: function get() {
- var config = this.config,
- levelDetails = this.levelDetails;
- if (config.liveMaxLatencyDuration !== undefined) {
- return config.liveMaxLatencyDuration;
- }
- return levelDetails ? config.liveMaxLatencyDurationCount * levelDetails.targetduration : 0;
- }
- }, {
- key: "targetLatency",
- get: function get() {
- var levelDetails = this.levelDetails;
- if (levelDetails === null) {
- return null;
- }
- var holdBack = levelDetails.holdBack,
- partHoldBack = levelDetails.partHoldBack,
- targetduration = levelDetails.targetduration;
- var _this$config2 = this.config,
- liveSyncDuration = _this$config2.liveSyncDuration,
- liveSyncDurationCount = _this$config2.liveSyncDurationCount,
- lowLatencyMode = _this$config2.lowLatencyMode;
- var userConfig = this.hls.userConfig;
- var targetLatency = lowLatencyMode ? partHoldBack || holdBack : holdBack;
- if (userConfig.liveSyncDuration || userConfig.liveSyncDurationCount || targetLatency === 0) {
- targetLatency = liveSyncDuration !== undefined ? liveSyncDuration : liveSyncDurationCount * targetduration;
- }
- var maxLiveSyncOnStallIncrease = targetduration;
- var liveSyncOnStallIncrease = 1.0;
- return targetLatency + Math.min(this.stallCount * liveSyncOnStallIncrease, maxLiveSyncOnStallIncrease);
- }
- }, {
- key: "liveSyncPosition",
- get: function get() {
- var liveEdge = this.estimateLiveEdge();
- var targetLatency = this.targetLatency;
- var levelDetails = this.levelDetails;
- if (liveEdge === null || targetLatency === null || levelDetails === null) {
- return null;
- }
- var edge = levelDetails.edge;
- var syncPosition = liveEdge - targetLatency - this.edgeStalled;
- var min = edge - levelDetails.totalduration;
- var max = edge - (this.config.lowLatencyMode && levelDetails.partTarget || levelDetails.targetduration);
- return Math.min(Math.max(min, syncPosition), max);
- }
- }, {
- key: "drift",
- get: function get() {
- var levelDetails = this.levelDetails;
- if (levelDetails === null) {
- return 1;
- }
- return levelDetails.drift;
- }
- }, {
- key: "edgeStalled",
- get: function get() {
- var levelDetails = this.levelDetails;
- if (levelDetails === null) {
- return 0;
- }
- var maxLevelUpdateAge = (this.config.lowLatencyMode && levelDetails.partTarget || levelDetails.targetduration) * 3;
- return Math.max(levelDetails.age - maxLevelUpdateAge, 0);
- }
- }, {
- key: "forwardBufferLength",
- get: function get() {
- var media = this.media,
- levelDetails = this.levelDetails;
- if (!media || !levelDetails) {
- return 0;
- }
- var bufferedRanges = media.buffered.length;
- return (bufferedRanges ? media.buffered.end(bufferedRanges - 1) : levelDetails.edge) - this.currentTime;
- }
- }]);
- return LatencyController;
- }();
-
- var HdcpLevels = ['NONE', 'TYPE-0', 'TYPE-1', null];
- function isHdcpLevel(value) {
- return HdcpLevels.indexOf(value) > -1;
- }
- var VideoRangeValues = ['SDR', 'PQ', 'HLG'];
- function isVideoRange(value) {
- return !!value && VideoRangeValues.indexOf(value) > -1;
- }
- var HlsSkip = {
- No: "",
- Yes: "YES",
- v2: "v2"
- };
- function getSkipValue(details) {
- var canSkipUntil = details.canSkipUntil,
- canSkipDateRanges = details.canSkipDateRanges,
- age = details.age;
- // A Client SHOULD NOT request a Playlist Delta Update unless it already
- // has a version of the Playlist that is no older than one-half of the Skip Boundary.
- // @see: https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis#section-6.3.7
- var playlistRecentEnough = age < canSkipUntil / 2;
- if (canSkipUntil && playlistRecentEnough) {
- if (canSkipDateRanges) {
- return HlsSkip.v2;
- }
- return HlsSkip.Yes;
- }
- return HlsSkip.No;
- }
- var HlsUrlParameters = /*#__PURE__*/function () {
- function HlsUrlParameters(msn, part, skip) {
- this.msn = void 0;
- this.part = void 0;
- this.skip = void 0;
- this.msn = msn;
- this.part = part;
- this.skip = skip;
- }
- var _proto = HlsUrlParameters.prototype;
- _proto.addDirectives = function addDirectives(uri) {
- var url = new self.URL(uri);
- if (this.msn !== undefined) {
- url.searchParams.set('_HLS_msn', this.msn.toString());
- }
- if (this.part !== undefined) {
- url.searchParams.set('_HLS_part', this.part.toString());
- }
- if (this.skip) {
- url.searchParams.set('_HLS_skip', this.skip);
- }
- return url.href;
- };
- return HlsUrlParameters;
- }();
- var Level = /*#__PURE__*/function () {
- function Level(data) {
- this._attrs = void 0;
- this.audioCodec = void 0;
- this.bitrate = void 0;
- this.codecSet = void 0;
- this.url = void 0;
- this.frameRate = void 0;
- this.height = void 0;
- this.id = void 0;
- this.name = void 0;
- this.videoCodec = void 0;
- this.width = void 0;
- this.details = void 0;
- this.fragmentError = 0;
- this.loadError = 0;
- this.loaded = void 0;
- this.realBitrate = 0;
- this.supportedPromise = void 0;
- this.supportedResult = void 0;
- this._avgBitrate = 0;
- this._audioGroups = void 0;
- this._subtitleGroups = void 0;
- // Deprecated (retained for backwards compatibility)
- this._urlId = 0;
- this.url = [data.url];
- this._attrs = [data.attrs];
- this.bitrate = data.bitrate;
- if (data.details) {
- this.details = data.details;
- }
- this.id = data.id || 0;
- this.name = data.name;
- this.width = data.width || 0;
- this.height = data.height || 0;
- this.frameRate = data.attrs.optionalFloat('FRAME-RATE', 0);
- this._avgBitrate = data.attrs.decimalInteger('AVERAGE-BANDWIDTH');
- this.audioCodec = data.audioCodec;
- this.videoCodec = data.videoCodec;
- this.codecSet = [data.videoCodec, data.audioCodec].filter(function (c) {
- return !!c;
- }).map(function (s) {
- return s.substring(0, 4);
- }).join(',');
- this.addGroupId('audio', data.attrs.AUDIO);
- this.addGroupId('text', data.attrs.SUBTITLES);
- }
- var _proto2 = Level.prototype;
- _proto2.hasAudioGroup = function hasAudioGroup(groupId) {
- return hasGroup(this._audioGroups, groupId);
- };
- _proto2.hasSubtitleGroup = function hasSubtitleGroup(groupId) {
- return hasGroup(this._subtitleGroups, groupId);
- };
- _proto2.addGroupId = function addGroupId(type, groupId) {
- if (!groupId) {
- return;
- }
- if (type === 'audio') {
- var audioGroups = this._audioGroups;
- if (!audioGroups) {
- audioGroups = this._audioGroups = [];
- }
- if (audioGroups.indexOf(groupId) === -1) {
- audioGroups.push(groupId);
- }
- } else if (type === 'text') {
- var subtitleGroups = this._subtitleGroups;
- if (!subtitleGroups) {
- subtitleGroups = this._subtitleGroups = [];
- }
- if (subtitleGroups.indexOf(groupId) === -1) {
- subtitleGroups.push(groupId);
- }
- }
- }
-
- // Deprecated methods (retained for backwards compatibility)
- ;
- _proto2.addFallback = function addFallback() {};
- _createClass(Level, [{
- key: "maxBitrate",
- get: function get() {
- return Math.max(this.realBitrate, this.bitrate);
- }
- }, {
- key: "averageBitrate",
- get: function get() {
- return this._avgBitrate || this.realBitrate || this.bitrate;
- }
- }, {
- key: "attrs",
- get: function get() {
- return this._attrs[0];
- }
- }, {
- key: "codecs",
- get: function get() {
- return this.attrs.CODECS || '';
- }
- }, {
- key: "pathwayId",
- get: function get() {
- return this.attrs['PATHWAY-ID'] || '.';
- }
- }, {
- key: "videoRange",
- get: function get() {
- return this.attrs['VIDEO-RANGE'] || 'SDR';
- }
- }, {
- key: "score",
- get: function get() {
- return this.attrs.optionalFloat('SCORE', 0);
- }
- }, {
- key: "uri",
- get: function get() {
- return this.url[0] || '';
- }
- }, {
- key: "audioGroups",
- get: function get() {
- return this._audioGroups;
- }
- }, {
- key: "subtitleGroups",
- get: function get() {
- return this._subtitleGroups;
- }
- }, {
- key: "urlId",
- get: function get() {
- return 0;
- },
- set: function set(value) {}
- }, {
- key: "audioGroupIds",
- get: function get() {
- return this.audioGroups ? [this.audioGroupId] : undefined;
- }
- }, {
- key: "textGroupIds",
- get: function get() {
- return this.subtitleGroups ? [this.textGroupId] : undefined;
- }
- }, {
- key: "audioGroupId",
- get: function get() {
- var _this$audioGroups;
- return (_this$audioGroups = this.audioGroups) == null ? void 0 : _this$audioGroups[0];
- }
- }, {
- key: "textGroupId",
- get: function get() {
- var _this$subtitleGroups;
- return (_this$subtitleGroups = this.subtitleGroups) == null ? void 0 : _this$subtitleGroups[0];
- }
- }]);
- return Level;
- }();
- function hasGroup(groups, groupId) {
- if (!groupId || !groups) {
- return false;
- }
- return groups.indexOf(groupId) !== -1;
- }
-
- function updateFromToPTS(fragFrom, fragTo) {
- var fragToPTS = fragTo.startPTS;
- // if we know startPTS[toIdx]
- if (isFiniteNumber(fragToPTS)) {
- // update fragment duration.
- // it helps to fix drifts between playlist reported duration and fragment real duration
- var duration = 0;
- var frag;
- if (fragTo.sn > fragFrom.sn) {
- duration = fragToPTS - fragFrom.start;
- frag = fragFrom;
- } else {
- duration = fragFrom.start - fragToPTS;
- frag = fragTo;
- }
- if (frag.duration !== duration) {
- frag.duration = duration;
- }
- // we dont know startPTS[toIdx]
- } else if (fragTo.sn > fragFrom.sn) {
- var contiguous = fragFrom.cc === fragTo.cc;
- // TODO: With part-loading end/durations we need to confirm the whole fragment is loaded before using (or setting) minEndPTS
- if (contiguous && fragFrom.minEndPTS) {
- fragTo.start = fragFrom.start + (fragFrom.minEndPTS - fragFrom.start);
- } else {
- fragTo.start = fragFrom.start + fragFrom.duration;
- }
- } else {
- fragTo.start = Math.max(fragFrom.start - fragTo.duration, 0);
- }
- }
- function updateFragPTSDTS(details, frag, startPTS, endPTS, startDTS, endDTS) {
- var parsedMediaDuration = endPTS - startPTS;
- if (parsedMediaDuration <= 0) {
- logger.warn('Fragment should have a positive duration', frag);
- endPTS = startPTS + frag.duration;
- endDTS = startDTS + frag.duration;
- }
- var maxStartPTS = startPTS;
- var minEndPTS = endPTS;
- var fragStartPts = frag.startPTS;
- var fragEndPts = frag.endPTS;
- if (isFiniteNumber(fragStartPts)) {
- // delta PTS between audio and video
- var deltaPTS = Math.abs(fragStartPts - startPTS);
- if (!isFiniteNumber(frag.deltaPTS)) {
- frag.deltaPTS = deltaPTS;
- } else {
- frag.deltaPTS = Math.max(deltaPTS, frag.deltaPTS);
- }
- maxStartPTS = Math.max(startPTS, fragStartPts);
- startPTS = Math.min(startPTS, fragStartPts);
- startDTS = Math.min(startDTS, frag.startDTS);
- minEndPTS = Math.min(endPTS, fragEndPts);
- endPTS = Math.max(endPTS, fragEndPts);
- endDTS = Math.max(endDTS, frag.endDTS);
- }
- var drift = startPTS - frag.start;
- if (frag.start !== 0) {
- frag.start = startPTS;
- }
- frag.duration = endPTS - frag.start;
- frag.startPTS = startPTS;
- frag.maxStartPTS = maxStartPTS;
- frag.startDTS = startDTS;
- frag.endPTS = endPTS;
- frag.minEndPTS = minEndPTS;
- frag.endDTS = endDTS;
- var sn = frag.sn; // 'initSegment'
- // exit if sn out of range
- if (!details || sn < details.startSN || sn > details.endSN) {
- return 0;
- }
- var i;
- var fragIdx = sn - details.startSN;
- var fragments = details.fragments;
- // update frag reference in fragments array
- // rationale is that fragments array might not contain this frag object.
- // this will happen if playlist has been refreshed between frag loading and call to updateFragPTSDTS()
- // if we don't update frag, we won't be able to propagate PTS info on the playlist
- // resulting in invalid sliding computation
- fragments[fragIdx] = frag;
- // adjust fragment PTS/duration from seqnum-1 to frag 0
- for (i = fragIdx; i > 0; i--) {
- updateFromToPTS(fragments[i], fragments[i - 1]);
- }
-
- // adjust fragment PTS/duration from seqnum to last frag
- for (i = fragIdx; i < fragments.length - 1; i++) {
- updateFromToPTS(fragments[i], fragments[i + 1]);
- }
- if (details.fragmentHint) {
- updateFromToPTS(fragments[fragments.length - 1], details.fragmentHint);
- }
- details.PTSKnown = details.alignedSliding = true;
- return drift;
- }
- function mergeDetails(oldDetails, newDetails) {
- // Track the last initSegment processed. Initialize it to the last one on the timeline.
- var currentInitSegment = null;
- var oldFragments = oldDetails.fragments;
- for (var i = oldFragments.length - 1; i >= 0; i--) {
- var oldInit = oldFragments[i].initSegment;
- if (oldInit) {
- currentInitSegment = oldInit;
- break;
- }
- }
- if (oldDetails.fragmentHint) {
- // prevent PTS and duration from being adjusted on the next hint
- delete oldDetails.fragmentHint.endPTS;
- }
- // check if old/new playlists have fragments in common
- // loop through overlapping SN and update startPTS , cc, and duration if any found
- var ccOffset = 0;
- var PTSFrag;
- mapFragmentIntersection(oldDetails, newDetails, function (oldFrag, newFrag) {
- if (oldFrag.relurl) {
- // Do not compare CC if the old fragment has no url. This is a level.fragmentHint used by LL-HLS parts.
- // It maybe be off by 1 if it was created before any parts or discontinuity tags were appended to the end
- // of the playlist.
- ccOffset = oldFrag.cc - newFrag.cc;
- }
- if (isFiniteNumber(oldFrag.startPTS) && isFiniteNumber(oldFrag.endPTS)) {
- newFrag.start = newFrag.startPTS = oldFrag.startPTS;
- newFrag.startDTS = oldFrag.startDTS;
- newFrag.maxStartPTS = oldFrag.maxStartPTS;
- newFrag.endPTS = oldFrag.endPTS;
- newFrag.endDTS = oldFrag.endDTS;
- newFrag.minEndPTS = oldFrag.minEndPTS;
- newFrag.duration = oldFrag.endPTS - oldFrag.startPTS;
- if (newFrag.duration) {
- PTSFrag = newFrag;
- }
-
- // PTS is known when any segment has startPTS and endPTS
- newDetails.PTSKnown = newDetails.alignedSliding = true;
- }
- newFrag.elementaryStreams = oldFrag.elementaryStreams;
- newFrag.loader = oldFrag.loader;
- newFrag.stats = oldFrag.stats;
- if (oldFrag.initSegment) {
- newFrag.initSegment = oldFrag.initSegment;
- currentInitSegment = oldFrag.initSegment;
- }
- });
- if (currentInitSegment) {
- var fragmentsToCheck = newDetails.fragmentHint ? newDetails.fragments.concat(newDetails.fragmentHint) : newDetails.fragments;
- fragmentsToCheck.forEach(function (frag) {
- var _currentInitSegment;
- if (frag && (!frag.initSegment || frag.initSegment.relurl === ((_currentInitSegment = currentInitSegment) == null ? void 0 : _currentInitSegment.relurl))) {
- frag.initSegment = currentInitSegment;
- }
- });
- }
- if (newDetails.skippedSegments) {
- newDetails.deltaUpdateFailed = newDetails.fragments.some(function (frag) {
- return !frag;
- });
- if (newDetails.deltaUpdateFailed) {
- logger.warn('[level-helper] Previous playlist missing segments skipped in delta playlist');
- for (var _i = newDetails.skippedSegments; _i--;) {
- newDetails.fragments.shift();
- }
- newDetails.startSN = newDetails.fragments[0].sn;
- newDetails.startCC = newDetails.fragments[0].cc;
- } else if (newDetails.canSkipDateRanges) {
- newDetails.dateRanges = mergeDateRanges(oldDetails.dateRanges, newDetails.dateRanges, newDetails.recentlyRemovedDateranges);
- }
- }
- var newFragments = newDetails.fragments;
- if (ccOffset) {
- logger.warn('discontinuity sliding from playlist, take drift into account');
- for (var _i2 = 0; _i2 < newFragments.length; _i2++) {
- newFragments[_i2].cc += ccOffset;
- }
- }
- if (newDetails.skippedSegments) {
- newDetails.startCC = newDetails.fragments[0].cc;
- }
-
- // Merge parts
- mapPartIntersection(oldDetails.partList, newDetails.partList, function (oldPart, newPart) {
- newPart.elementaryStreams = oldPart.elementaryStreams;
- newPart.stats = oldPart.stats;
- });
-
- // if at least one fragment contains PTS info, recompute PTS information for all fragments
- if (PTSFrag) {
- updateFragPTSDTS(newDetails, PTSFrag, PTSFrag.startPTS, PTSFrag.endPTS, PTSFrag.startDTS, PTSFrag.endDTS);
- } else {
- // ensure that delta is within oldFragments range
- // also adjust sliding in case delta is 0 (we could have old=[50-60] and new=old=[50-61])
- // in that case we also need to adjust start offset of all fragments
- adjustSliding(oldDetails, newDetails);
- }
- if (newFragments.length) {
- newDetails.totalduration = newDetails.edge - newFragments[0].start;
- }
- newDetails.driftStartTime = oldDetails.driftStartTime;
- newDetails.driftStart = oldDetails.driftStart;
- var advancedDateTime = newDetails.advancedDateTime;
- if (newDetails.advanced && advancedDateTime) {
- var edge = newDetails.edge;
- if (!newDetails.driftStart) {
- newDetails.driftStartTime = advancedDateTime;
- newDetails.driftStart = edge;
- }
- newDetails.driftEndTime = advancedDateTime;
- newDetails.driftEnd = edge;
- } else {
- newDetails.driftEndTime = oldDetails.driftEndTime;
- newDetails.driftEnd = oldDetails.driftEnd;
- newDetails.advancedDateTime = oldDetails.advancedDateTime;
- }
- }
- function mergeDateRanges(oldDateRanges, deltaDateRanges, recentlyRemovedDateranges) {
- var dateRanges = _extends({}, oldDateRanges);
- if (recentlyRemovedDateranges) {
- recentlyRemovedDateranges.forEach(function (id) {
- delete dateRanges[id];
- });
- }
- Object.keys(deltaDateRanges).forEach(function (id) {
- var dateRange = new DateRange(deltaDateRanges[id].attr, dateRanges[id]);
- if (dateRange.isValid) {
- dateRanges[id] = dateRange;
- } else {
- logger.warn("Ignoring invalid Playlist Delta Update DATERANGE tag: \"" + JSON.stringify(deltaDateRanges[id].attr) + "\"");
- }
- });
- return dateRanges;
- }
- function mapPartIntersection(oldParts, newParts, intersectionFn) {
- if (oldParts && newParts) {
- var delta = 0;
- for (var i = 0, len = oldParts.length; i <= len; i++) {
- var _oldPart = oldParts[i];
- var _newPart = newParts[i + delta];
- if (_oldPart && _newPart && _oldPart.index === _newPart.index && _oldPart.fragment.sn === _newPart.fragment.sn) {
- intersectionFn(_oldPart, _newPart);
- } else {
- delta--;
- }
- }
- }
- }
- function mapFragmentIntersection(oldDetails, newDetails, intersectionFn) {
- var skippedSegments = newDetails.skippedSegments;
- var start = Math.max(oldDetails.startSN, newDetails.startSN) - newDetails.startSN;
- var end = (oldDetails.fragmentHint ? 1 : 0) + (skippedSegments ? newDetails.endSN : Math.min(oldDetails.endSN, newDetails.endSN)) - newDetails.startSN;
- var delta = newDetails.startSN - oldDetails.startSN;
- var newFrags = newDetails.fragmentHint ? newDetails.fragments.concat(newDetails.fragmentHint) : newDetails.fragments;
- var oldFrags = oldDetails.fragmentHint ? oldDetails.fragments.concat(oldDetails.fragmentHint) : oldDetails.fragments;
- for (var i = start; i <= end; i++) {
- var _oldFrag = oldFrags[delta + i];
- var _newFrag = newFrags[i];
- if (skippedSegments && !_newFrag && i < skippedSegments) {
- // Fill in skipped segments in delta playlist
- _newFrag = newDetails.fragments[i] = _oldFrag;
- }
- if (_oldFrag && _newFrag) {
- intersectionFn(_oldFrag, _newFrag);
- }
- }
- }
- function adjustSliding(oldDetails, newDetails) {
- var delta = newDetails.startSN + newDetails.skippedSegments - oldDetails.startSN;
- var oldFragments = oldDetails.fragments;
- if (delta < 0 || delta >= oldFragments.length) {
- return;
- }
- addSliding(newDetails, oldFragments[delta].start);
- }
- function addSliding(details, start) {
- if (start) {
- var fragments = details.fragments;
- for (var i = details.skippedSegments; i < fragments.length; i++) {
- fragments[i].start += start;
- }
- if (details.fragmentHint) {
- details.fragmentHint.start += start;
- }
- }
- }
- function computeReloadInterval(newDetails, distanceToLiveEdgeMs) {
- if (distanceToLiveEdgeMs === void 0) {
- distanceToLiveEdgeMs = Infinity;
- }
- var reloadInterval = 1000 * newDetails.targetduration;
- if (newDetails.updated) {
- // Use last segment duration when shorter than target duration and near live edge
- var fragments = newDetails.fragments;
- var liveEdgeMaxTargetDurations = 4;
- if (fragments.length && reloadInterval * liveEdgeMaxTargetDurations > distanceToLiveEdgeMs) {
- var lastSegmentDuration = fragments[fragments.length - 1].duration * 1000;
- if (lastSegmentDuration < reloadInterval) {
- reloadInterval = lastSegmentDuration;
- }
- }
- } else {
- // estimate = 'miss half average';
- // follow HLS Spec, If the client reloads a Playlist file and finds that it has not
- // changed then it MUST wait for a period of one-half the target
- // duration before retrying.
- reloadInterval /= 2;
- }
- return Math.round(reloadInterval);
- }
- function getFragmentWithSN(level, sn, fragCurrent) {
- if (!(level != null && level.details)) {
- return null;
- }
- var levelDetails = level.details;
- var fragment = levelDetails.fragments[sn - levelDetails.startSN];
- if (fragment) {
- return fragment;
- }
- fragment = levelDetails.fragmentHint;
- if (fragment && fragment.sn === sn) {
- return fragment;
- }
- if (sn < levelDetails.startSN && fragCurrent && fragCurrent.sn === sn) {
- return fragCurrent;
- }
- return null;
- }
- function getPartWith(level, sn, partIndex) {
- var _level$details;
- if (!(level != null && level.details)) {
- return null;
- }
- return findPart((_level$details = level.details) == null ? void 0 : _level$details.partList, sn, partIndex);
- }
- function findPart(partList, sn, partIndex) {
- if (partList) {
- for (var i = partList.length; i--;) {
- var part = partList[i];
- if (part.index === partIndex && part.fragment.sn === sn) {
- return part;
- }
- }
- }
- return null;
- }
- function reassignFragmentLevelIndexes(levels) {
- levels.forEach(function (level, index) {
- var details = level.details;
- if (details != null && details.fragments) {
- details.fragments.forEach(function (fragment) {
- fragment.level = index;
- });
- }
- });
- }
-
- function isTimeoutError(error) {
- switch (error.details) {
- case ErrorDetails.FRAG_LOAD_TIMEOUT:
- case ErrorDetails.KEY_LOAD_TIMEOUT:
- case ErrorDetails.LEVEL_LOAD_TIMEOUT:
- case ErrorDetails.MANIFEST_LOAD_TIMEOUT:
- return true;
- }
- return false;
- }
- function getRetryConfig(loadPolicy, error) {
- var isTimeout = isTimeoutError(error);
- return loadPolicy.default[(isTimeout ? 'timeout' : 'error') + "Retry"];
- }
- function getRetryDelay(retryConfig, retryCount) {
- // exponential backoff capped to max retry delay
- var backoffFactor = retryConfig.backoff === 'linear' ? 1 : Math.pow(2, retryCount);
- return Math.min(backoffFactor * retryConfig.retryDelayMs, retryConfig.maxRetryDelayMs);
- }
- function getLoaderConfigWithoutReties(loderConfig) {
- return _objectSpread2(_objectSpread2({}, loderConfig), {
- errorRetry: null,
- timeoutRetry: null
- });
- }
- function shouldRetry(retryConfig, retryCount, isTimeout, loaderResponse) {
- if (!retryConfig) {
- return false;
- }
- var httpStatus = loaderResponse == null ? void 0 : loaderResponse.code;
- var retry = retryCount < retryConfig.maxNumRetry && (retryForHttpStatus(httpStatus) || !!isTimeout);
- return retryConfig.shouldRetry ? retryConfig.shouldRetry(retryConfig, retryCount, isTimeout, loaderResponse, retry) : retry;
- }
- function retryForHttpStatus(httpStatus) {
- // Do not retry on status 4xx, status 0 (CORS error), or undefined (decrypt/gap/parse error)
- return httpStatus === 0 && navigator.onLine === false || !!httpStatus && (httpStatus < 400 || httpStatus > 499);
- }
-
- var BinarySearch = {
- /**
- * Searches for an item in an array which matches a certain condition.
- * This requires the condition to only match one item in the array,
- * and for the array to be ordered.
- *
- * @param list The array to search.
- * @param comparisonFn
- * Called and provided a candidate item as the first argument.
- * Should return:
- * > -1 if the item should be located at a lower index than the provided item.
- * > 1 if the item should be located at a higher index than the provided item.
- * > 0 if the item is the item you're looking for.
- *
- * @returns the object if found, otherwise returns null
- */
- search: function search(list, comparisonFn) {
- var minIndex = 0;
- var maxIndex = list.length - 1;
- var currentIndex = null;
- var currentElement = null;
- while (minIndex <= maxIndex) {
- currentIndex = (minIndex + maxIndex) / 2 | 0;
- currentElement = list[currentIndex];
- var comparisonResult = comparisonFn(currentElement);
- if (comparisonResult > 0) {
- minIndex = currentIndex + 1;
- } else if (comparisonResult < 0) {
- maxIndex = currentIndex - 1;
- } else {
- return currentElement;
- }
- }
- return null;
- }
- };
-
- /**
- * Returns first fragment whose endPdt value exceeds the given PDT, or null.
- * @param fragments - The array of candidate fragments
- * @param PDTValue - The PDT value which must be exceeded
- * @param maxFragLookUpTolerance - The amount of time that a fragment's start/end can be within in order to be considered contiguous
- */
- function findFragmentByPDT(fragments, PDTValue, maxFragLookUpTolerance) {
- if (PDTValue === null || !Array.isArray(fragments) || !fragments.length || !isFiniteNumber(PDTValue)) {
- return null;
- }
-
- // if less than start
- var startPDT = fragments[0].programDateTime;
- if (PDTValue < (startPDT || 0)) {
- return null;
- }
- var endPDT = fragments[fragments.length - 1].endProgramDateTime;
- if (PDTValue >= (endPDT || 0)) {
- return null;
- }
- maxFragLookUpTolerance = maxFragLookUpTolerance || 0;
- for (var seg = 0; seg < fragments.length; ++seg) {
- var frag = fragments[seg];
- if (pdtWithinToleranceTest(PDTValue, maxFragLookUpTolerance, frag)) {
- return frag;
- }
- }
- return null;
- }
-
- /**
- * Finds a fragment based on the SN of the previous fragment; or based on the needs of the current buffer.
- * This method compensates for small buffer gaps by applying a tolerance to the start of any candidate fragment, thus
- * breaking any traps which would cause the same fragment to be continuously selected within a small range.
- * @param fragPrevious - The last frag successfully appended
- * @param fragments - The array of candidate fragments
- * @param bufferEnd - The end of the contiguous buffered range the playhead is currently within
- * @param maxFragLookUpTolerance - The amount of time that a fragment's start/end can be within in order to be considered contiguous
- * @returns a matching fragment or null
- */
- function findFragmentByPTS(fragPrevious, fragments, bufferEnd, maxFragLookUpTolerance, nextFragLookupTolerance) {
- if (bufferEnd === void 0) {
- bufferEnd = 0;
- }
- if (maxFragLookUpTolerance === void 0) {
- maxFragLookUpTolerance = 0;
- }
- if (nextFragLookupTolerance === void 0) {
- nextFragLookupTolerance = 0.005;
- }
- var fragNext = null;
- if (fragPrevious) {
- fragNext = fragments[fragPrevious.sn - fragments[0].sn + 1] || null;
- // check for buffer-end rounding error
- var bufferEdgeError = fragPrevious.endDTS - bufferEnd;
- if (bufferEdgeError > 0 && bufferEdgeError < 0.0000015) {
- bufferEnd += 0.0000015;
- }
- } else if (bufferEnd === 0 && fragments[0].start === 0) {
- fragNext = fragments[0];
- }
- // Prefer the next fragment if it's within tolerance
- if (fragNext && ((!fragPrevious || fragPrevious.level === fragNext.level) && fragmentWithinToleranceTest(bufferEnd, maxFragLookUpTolerance, fragNext) === 0 || fragmentWithinFastStartSwitch(fragNext, fragPrevious, Math.min(nextFragLookupTolerance, maxFragLookUpTolerance)))) {
- return fragNext;
- }
- // We might be seeking past the tolerance so find the best match
- var foundFragment = BinarySearch.search(fragments, fragmentWithinToleranceTest.bind(null, bufferEnd, maxFragLookUpTolerance));
- if (foundFragment && (foundFragment !== fragPrevious || !fragNext)) {
- return foundFragment;
- }
- // If no match was found return the next fragment after fragPrevious, or null
- return fragNext;
- }
- function fragmentWithinFastStartSwitch(fragNext, fragPrevious, nextFragLookupTolerance) {
- if (fragPrevious && fragPrevious.start === 0 && fragPrevious.level < fragNext.level && (fragPrevious.endPTS || 0) > 0) {
- var firstDuration = fragPrevious.tagList.reduce(function (duration, tag) {
- if (tag[0] === 'INF') {
- duration += parseFloat(tag[1]);
- }
- return duration;
- }, nextFragLookupTolerance);
- return fragNext.start <= firstDuration;
- }
- return false;
- }
-
- /**
- * The test function used by the findFragmentBySn's BinarySearch to look for the best match to the current buffer conditions.
- * @param candidate - The fragment to test
- * @param bufferEnd - The end of the current buffered range the playhead is currently within
- * @param maxFragLookUpTolerance - The amount of time that a fragment's start can be within in order to be considered contiguous
- * @returns 0 if it matches, 1 if too low, -1 if too high
- */
- function fragmentWithinToleranceTest(bufferEnd, maxFragLookUpTolerance, candidate) {
- if (bufferEnd === void 0) {
- bufferEnd = 0;
- }
- if (maxFragLookUpTolerance === void 0) {
- maxFragLookUpTolerance = 0;
- }
- // eagerly accept an accurate match (no tolerance)
- if (candidate.start <= bufferEnd && candidate.start + candidate.duration > bufferEnd) {
- return 0;
- }
- // offset should be within fragment boundary - config.maxFragLookUpTolerance
- // this is to cope with situations like
- // bufferEnd = 9.991
- // frag[Ø] : [0,10]
- // frag[1] : [10,20]
- // bufferEnd is within frag[0] range ... although what we are expecting is to return frag[1] here
- // frag start frag start+duration
- // |-----------------------------|
- // <---> <--->
- // ...--------><-----------------------------><---------....
- // previous frag matching fragment next frag
- // return -1 return 0 return 1
- // logger.log(`level/sn/start/end/bufEnd:${level}/${candidate.sn}/${candidate.start}/${(candidate.start+candidate.duration)}/${bufferEnd}`);
- // Set the lookup tolerance to be small enough to detect the current segment - ensures we don't skip over very small segments
- var candidateLookupTolerance = Math.min(maxFragLookUpTolerance, candidate.duration + (candidate.deltaPTS ? candidate.deltaPTS : 0));
- if (candidate.start + candidate.duration - candidateLookupTolerance <= bufferEnd) {
- return 1;
- } else if (candidate.start - candidateLookupTolerance > bufferEnd && candidate.start) {
- // if maxFragLookUpTolerance will have negative value then don't return -1 for first element
- return -1;
- }
- return 0;
- }
-
- /**
- * The test function used by the findFragmentByPdt's BinarySearch to look for the best match to the current buffer conditions.
- * This function tests the candidate's program date time values, as represented in Unix time
- * @param candidate - The fragment to test
- * @param pdtBufferEnd - The Unix time representing the end of the current buffered range
- * @param maxFragLookUpTolerance - The amount of time that a fragment's start can be within in order to be considered contiguous
- * @returns true if contiguous, false otherwise
- */
- function pdtWithinToleranceTest(pdtBufferEnd, maxFragLookUpTolerance, candidate) {
- var candidateLookupTolerance = Math.min(maxFragLookUpTolerance, candidate.duration + (candidate.deltaPTS ? candidate.deltaPTS : 0)) * 1000;
-
- // endProgramDateTime can be null, default to zero
- var endProgramDateTime = candidate.endProgramDateTime || 0;
- return endProgramDateTime - candidateLookupTolerance > pdtBufferEnd;
- }
- function findFragWithCC(fragments, cc) {
- return BinarySearch.search(fragments, function (candidate) {
- if (candidate.cc < cc) {
- return 1;
- } else if (candidate.cc > cc) {
- return -1;
- } else {
- return 0;
- }
- });
- }
-
- var NetworkErrorAction = {
- DoNothing: 0,
- SendEndCallback: 1,
- SendAlternateToPenaltyBox: 2,
- RemoveAlternatePermanently: 3,
- InsertDiscontinuity: 4,
- RetryRequest: 5
- };
- var ErrorActionFlags = {
- None: 0,
- MoveAllAlternatesMatchingHost: 1,
- MoveAllAlternatesMatchingHDCP: 2,
- SwitchToSDR: 4
- }; // Reserved for future use
- var ErrorController = /*#__PURE__*/function () {
- function ErrorController(hls) {
- this.hls = void 0;
- this.playlistError = 0;
- this.penalizedRenditions = {};
- this.log = void 0;
- this.warn = void 0;
- this.error = void 0;
- this.hls = hls;
- this.log = logger.log.bind(logger, "[info]:");
- this.warn = logger.warn.bind(logger, "[warning]:");
- this.error = logger.error.bind(logger, "[error]:");
- this.registerListeners();
- }
- var _proto = ErrorController.prototype;
- _proto.registerListeners = function registerListeners() {
- var hls = this.hls;
- hls.on(Events.ERROR, this.onError, this);
- hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.on(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
- };
- _proto.unregisterListeners = function unregisterListeners() {
- var hls = this.hls;
- if (!hls) {
- return;
- }
- hls.off(Events.ERROR, this.onError, this);
- hls.off(Events.ERROR, this.onErrorOut, this);
- hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.off(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
- };
- _proto.destroy = function destroy() {
- this.unregisterListeners();
- // @ts-ignore
- this.hls = null;
- this.penalizedRenditions = {};
- };
- _proto.startLoad = function startLoad(startPosition) {};
- _proto.stopLoad = function stopLoad() {
- this.playlistError = 0;
- };
- _proto.getVariantLevelIndex = function getVariantLevelIndex(frag) {
- return (frag == null ? void 0 : frag.type) === PlaylistLevelType.MAIN ? frag.level : this.hls.loadLevel;
- };
- _proto.onManifestLoading = function onManifestLoading() {
- this.playlistError = 0;
- this.penalizedRenditions = {};
- };
- _proto.onLevelUpdated = function onLevelUpdated() {
- this.playlistError = 0;
- };
- _proto.onError = function onError(event, data) {
- var _data$frag, _data$level;
- if (data.fatal) {
- return;
- }
- var hls = this.hls;
- var context = data.context;
- switch (data.details) {
- case ErrorDetails.FRAG_LOAD_ERROR:
- case ErrorDetails.FRAG_LOAD_TIMEOUT:
- case ErrorDetails.KEY_LOAD_ERROR:
- case ErrorDetails.KEY_LOAD_TIMEOUT:
- data.errorAction = this.getFragRetryOrSwitchAction(data);
- return;
- case ErrorDetails.FRAG_PARSING_ERROR:
- // ignore empty segment errors marked as gap
- if ((_data$frag = data.frag) != null && _data$frag.gap) {
- data.errorAction = {
- action: NetworkErrorAction.DoNothing,
- flags: ErrorActionFlags.None
- };
- return;
- }
- // falls through
- case ErrorDetails.FRAG_GAP:
- case ErrorDetails.FRAG_DECRYPT_ERROR:
- {
- // Switch level if possible, otherwise allow retry count to reach max error retries
- data.errorAction = this.getFragRetryOrSwitchAction(data);
- data.errorAction.action = NetworkErrorAction.SendAlternateToPenaltyBox;
- return;
- }
- case ErrorDetails.LEVEL_EMPTY_ERROR:
- case ErrorDetails.LEVEL_PARSING_ERROR:
- {
- var _data$context, _data$context$levelDe;
- // Only retry when empty and live
- var levelIndex = data.parent === PlaylistLevelType.MAIN ? data.level : hls.loadLevel;
- if (data.details === ErrorDetails.LEVEL_EMPTY_ERROR && !!((_data$context = data.context) != null && (_data$context$levelDe = _data$context.levelDetails) != null && _data$context$levelDe.live)) {
- data.errorAction = this.getPlaylistRetryOrSwitchAction(data, levelIndex);
- } else {
- // Escalate to fatal if not retrying or switching
- data.levelRetry = false;
- data.errorAction = this.getLevelSwitchAction(data, levelIndex);
- }
- }
- return;
- case ErrorDetails.LEVEL_LOAD_ERROR:
- case ErrorDetails.LEVEL_LOAD_TIMEOUT:
- if (typeof (context == null ? void 0 : context.level) === 'number') {
- data.errorAction = this.getPlaylistRetryOrSwitchAction(data, context.level);
- }
- return;
- case ErrorDetails.AUDIO_TRACK_LOAD_ERROR:
- case ErrorDetails.AUDIO_TRACK_LOAD_TIMEOUT:
- case ErrorDetails.SUBTITLE_LOAD_ERROR:
- case ErrorDetails.SUBTITLE_TRACK_LOAD_TIMEOUT:
- if (context) {
- var level = hls.levels[hls.loadLevel];
- if (level && (context.type === PlaylistContextType.AUDIO_TRACK && level.hasAudioGroup(context.groupId) || context.type === PlaylistContextType.SUBTITLE_TRACK && level.hasSubtitleGroup(context.groupId))) {
- // Perform Pathway switch or Redundant failover if possible for fastest recovery
- // otherwise allow playlist retry count to reach max error retries
- data.errorAction = this.getPlaylistRetryOrSwitchAction(data, hls.loadLevel);
- data.errorAction.action = NetworkErrorAction.SendAlternateToPenaltyBox;
- data.errorAction.flags = ErrorActionFlags.MoveAllAlternatesMatchingHost;
- return;
- }
- }
- return;
- case ErrorDetails.KEY_SYSTEM_STATUS_OUTPUT_RESTRICTED:
- {
- var _level = hls.levels[hls.loadLevel];
- var restrictedHdcpLevel = _level == null ? void 0 : _level.attrs['HDCP-LEVEL'];
- if (restrictedHdcpLevel) {
- data.errorAction = {
- action: NetworkErrorAction.SendAlternateToPenaltyBox,
- flags: ErrorActionFlags.MoveAllAlternatesMatchingHDCP,
- hdcpLevel: restrictedHdcpLevel
- };
- } else {
- this.keySystemError(data);
- }
- }
- return;
- case ErrorDetails.BUFFER_ADD_CODEC_ERROR:
- case ErrorDetails.REMUX_ALLOC_ERROR:
- case ErrorDetails.BUFFER_APPEND_ERROR:
- data.errorAction = this.getLevelSwitchAction(data, (_data$level = data.level) != null ? _data$level : hls.loadLevel);
- return;
- case ErrorDetails.INTERNAL_EXCEPTION:
- case ErrorDetails.BUFFER_APPENDING_ERROR:
- case ErrorDetails.BUFFER_FULL_ERROR:
- case ErrorDetails.LEVEL_SWITCH_ERROR:
- case ErrorDetails.BUFFER_STALLED_ERROR:
- case ErrorDetails.BUFFER_SEEK_OVER_HOLE:
- case ErrorDetails.BUFFER_NUDGE_ON_STALL:
- data.errorAction = {
- action: NetworkErrorAction.DoNothing,
- flags: ErrorActionFlags.None
- };
- return;
- }
- if (data.type === ErrorTypes.KEY_SYSTEM_ERROR) {
- this.keySystemError(data);
- }
- };
- _proto.keySystemError = function keySystemError(data) {
- var levelIndex = this.getVariantLevelIndex(data.frag);
- // Do not retry level. Escalate to fatal if switching levels fails.
- data.levelRetry = false;
- data.errorAction = this.getLevelSwitchAction(data, levelIndex);
- };
- _proto.getPlaylistRetryOrSwitchAction = function getPlaylistRetryOrSwitchAction(data, levelIndex) {
- var hls = this.hls;
- var retryConfig = getRetryConfig(hls.config.playlistLoadPolicy, data);
- var retryCount = this.playlistError++;
- var retry = shouldRetry(retryConfig, retryCount, isTimeoutError(data), data.response);
- if (retry) {
- return {
- action: NetworkErrorAction.RetryRequest,
- flags: ErrorActionFlags.None,
- retryConfig: retryConfig,
- retryCount: retryCount
- };
- }
- var errorAction = this.getLevelSwitchAction(data, levelIndex);
- if (retryConfig) {
- errorAction.retryConfig = retryConfig;
- errorAction.retryCount = retryCount;
- }
- return errorAction;
- };
- _proto.getFragRetryOrSwitchAction = function getFragRetryOrSwitchAction(data) {
- var hls = this.hls;
- // Share fragment error count accross media options (main, audio, subs)
- // This allows for level based rendition switching when media option assets fail
- var variantLevelIndex = this.getVariantLevelIndex(data.frag);
- var level = hls.levels[variantLevelIndex];
- var _hls$config = hls.config,
- fragLoadPolicy = _hls$config.fragLoadPolicy,
- keyLoadPolicy = _hls$config.keyLoadPolicy;
- var retryConfig = getRetryConfig(data.details.startsWith('key') ? keyLoadPolicy : fragLoadPolicy, data);
- var fragmentErrors = hls.levels.reduce(function (acc, level) {
- return acc + level.fragmentError;
- }, 0);
- // Switch levels when out of retried or level index out of bounds
- if (level) {
- if (data.details !== ErrorDetails.FRAG_GAP) {
- level.fragmentError++;
- }
- var retry = shouldRetry(retryConfig, fragmentErrors, isTimeoutError(data), data.response);
- if (retry) {
- return {
- action: NetworkErrorAction.RetryRequest,
- flags: ErrorActionFlags.None,
- retryConfig: retryConfig,
- retryCount: fragmentErrors
- };
- }
- }
- // Reach max retry count, or Missing level reference
- // Switch to valid index
- var errorAction = this.getLevelSwitchAction(data, variantLevelIndex);
- // Add retry details to allow skipping of FRAG_PARSING_ERROR
- if (retryConfig) {
- errorAction.retryConfig = retryConfig;
- errorAction.retryCount = fragmentErrors;
- }
- return errorAction;
- };
- _proto.getLevelSwitchAction = function getLevelSwitchAction(data, levelIndex) {
- var hls = this.hls;
- if (levelIndex === null || levelIndex === undefined) {
- levelIndex = hls.loadLevel;
- }
- var level = this.hls.levels[levelIndex];
- if (level) {
- var _data$frag2, _data$context2;
- var errorDetails = data.details;
- level.loadError++;
- if (errorDetails === ErrorDetails.BUFFER_APPEND_ERROR) {
- level.fragmentError++;
- }
- // Search for next level to retry
- var nextLevel = -1;
- var levels = hls.levels,
- loadLevel = hls.loadLevel,
- minAutoLevel = hls.minAutoLevel,
- maxAutoLevel = hls.maxAutoLevel;
- if (!hls.autoLevelEnabled) {
- hls.loadLevel = -1;
- }
- var fragErrorType = (_data$frag2 = data.frag) == null ? void 0 : _data$frag2.type;
- // Find alternate audio codec if available on audio codec error
- var isAudioCodecError = fragErrorType === PlaylistLevelType.AUDIO && errorDetails === ErrorDetails.FRAG_PARSING_ERROR || data.sourceBufferName === 'audio' && (errorDetails === ErrorDetails.BUFFER_ADD_CODEC_ERROR || errorDetails === ErrorDetails.BUFFER_APPEND_ERROR);
- var findAudioCodecAlternate = isAudioCodecError && levels.some(function (_ref) {
- var audioCodec = _ref.audioCodec;
- return level.audioCodec !== audioCodec;
- });
- // Find alternate video codec if available on video codec error
- var isVideoCodecError = data.sourceBufferName === 'video' && (errorDetails === ErrorDetails.BUFFER_ADD_CODEC_ERROR || errorDetails === ErrorDetails.BUFFER_APPEND_ERROR);
- var findVideoCodecAlternate = isVideoCodecError && levels.some(function (_ref2) {
- var codecSet = _ref2.codecSet,
- audioCodec = _ref2.audioCodec;
- return level.codecSet !== codecSet && level.audioCodec === audioCodec;
- });
- var _ref3 = (_data$context2 = data.context) != null ? _data$context2 : {},
- playlistErrorType = _ref3.type,
- playlistErrorGroupId = _ref3.groupId;
- var _loop = function _loop() {
- var candidate = (i + loadLevel) % levels.length;
- if (candidate !== loadLevel && candidate >= minAutoLevel && candidate <= maxAutoLevel && levels[candidate].loadError === 0) {
- var _level$audioGroups, _level$subtitleGroups;
- var levelCandidate = levels[candidate];
- // Skip level switch if GAP tag is found in next level at same position
- if (errorDetails === ErrorDetails.FRAG_GAP && fragErrorType === PlaylistLevelType.MAIN && data.frag) {
- var levelDetails = levels[candidate].details;
- if (levelDetails) {
- var fragCandidate = findFragmentByPTS(data.frag, levelDetails.fragments, data.frag.start);
- if (fragCandidate != null && fragCandidate.gap) {
- return 0; // continue
- }
- }
- } else if (playlistErrorType === PlaylistContextType.AUDIO_TRACK && levelCandidate.hasAudioGroup(playlistErrorGroupId) || playlistErrorType === PlaylistContextType.SUBTITLE_TRACK && levelCandidate.hasSubtitleGroup(playlistErrorGroupId)) {
- // For audio/subs playlist errors find another group ID or fallthrough to redundant fail-over
- return 0; // continue
- } else if (fragErrorType === PlaylistLevelType.AUDIO && (_level$audioGroups = level.audioGroups) != null && _level$audioGroups.some(function (groupId) {
- return levelCandidate.hasAudioGroup(groupId);
- }) || fragErrorType === PlaylistLevelType.SUBTITLE && (_level$subtitleGroups = level.subtitleGroups) != null && _level$subtitleGroups.some(function (groupId) {
- return levelCandidate.hasSubtitleGroup(groupId);
- }) || findAudioCodecAlternate && level.audioCodec === levelCandidate.audioCodec || !findAudioCodecAlternate && level.audioCodec !== levelCandidate.audioCodec || findVideoCodecAlternate && level.codecSet === levelCandidate.codecSet) {
- // For video/audio/subs frag errors find another group ID or fallthrough to redundant fail-over
- return 0; // continue
- }
- nextLevel = candidate;
- return 1; // break
- }
- },
- _ret;
- for (var i = levels.length; i--;) {
- _ret = _loop();
- if (_ret === 0) continue;
- if (_ret === 1) break;
- }
- if (nextLevel > -1 && hls.loadLevel !== nextLevel) {
- data.levelRetry = true;
- this.playlistError = 0;
- return {
- action: NetworkErrorAction.SendAlternateToPenaltyBox,
- flags: ErrorActionFlags.None,
- nextAutoLevel: nextLevel
- };
- }
- }
- // No levels to switch / Manual level selection / Level not found
- // Resolve with Pathway switch, Redundant fail-over, or stay on lowest Level
- return {
- action: NetworkErrorAction.SendAlternateToPenaltyBox,
- flags: ErrorActionFlags.MoveAllAlternatesMatchingHost
- };
- };
- _proto.onErrorOut = function onErrorOut(event, data) {
- var _data$errorAction;
- switch ((_data$errorAction = data.errorAction) == null ? void 0 : _data$errorAction.action) {
- case NetworkErrorAction.DoNothing:
- break;
- case NetworkErrorAction.SendAlternateToPenaltyBox:
- this.sendAlternateToPenaltyBox(data);
- if (!data.errorAction.resolved && data.details !== ErrorDetails.FRAG_GAP) {
- data.fatal = true;
- } else if (/MediaSource readyState: ended/.test(data.error.message)) {
- this.warn("MediaSource ended after \"" + data.sourceBufferName + "\" sourceBuffer append error. Attempting to recover from media error.");
- this.hls.recoverMediaError();
- }
- break;
- }
- if (data.fatal) {
- this.hls.stopLoad();
- return;
- }
- };
- _proto.sendAlternateToPenaltyBox = function sendAlternateToPenaltyBox(data) {
- var hls = this.hls;
- var errorAction = data.errorAction;
- if (!errorAction) {
- return;
- }
- var flags = errorAction.flags,
- hdcpLevel = errorAction.hdcpLevel,
- nextAutoLevel = errorAction.nextAutoLevel;
- switch (flags) {
- case ErrorActionFlags.None:
- this.switchLevel(data, nextAutoLevel);
- break;
- case ErrorActionFlags.MoveAllAlternatesMatchingHDCP:
- if (hdcpLevel) {
- hls.maxHdcpLevel = HdcpLevels[HdcpLevels.indexOf(hdcpLevel) - 1];
- errorAction.resolved = true;
- }
- this.warn("Restricting playback to HDCP-LEVEL of \"" + hls.maxHdcpLevel + "\" or lower");
- break;
- }
- // If not resolved by previous actions try to switch to next level
- if (!errorAction.resolved) {
- this.switchLevel(data, nextAutoLevel);
- }
- };
- _proto.switchLevel = function switchLevel(data, levelIndex) {
- if (levelIndex !== undefined && data.errorAction) {
- this.warn("switching to level " + levelIndex + " after " + data.details);
- this.hls.nextAutoLevel = levelIndex;
- data.errorAction.resolved = true;
- // Stream controller is responsible for this but won't switch on false start
- this.hls.nextLoadLevel = this.hls.nextAutoLevel;
- }
- };
- return ErrorController;
- }();
-
- var BasePlaylistController = /*#__PURE__*/function () {
- function BasePlaylistController(hls, logPrefix) {
- this.hls = void 0;
- this.timer = -1;
- this.requestScheduled = -1;
- this.canLoad = false;
- this.log = void 0;
- this.warn = void 0;
- this.log = logger.log.bind(logger, logPrefix + ":");
- this.warn = logger.warn.bind(logger, logPrefix + ":");
- this.hls = hls;
- }
- var _proto = BasePlaylistController.prototype;
- _proto.destroy = function destroy() {
- this.clearTimer();
- // @ts-ignore
- this.hls = this.log = this.warn = null;
- };
- _proto.clearTimer = function clearTimer() {
- if (this.timer !== -1) {
- self.clearTimeout(this.timer);
- this.timer = -1;
- }
- };
- _proto.startLoad = function startLoad() {
- this.canLoad = true;
- this.requestScheduled = -1;
- this.loadPlaylist();
- };
- _proto.stopLoad = function stopLoad() {
- this.canLoad = false;
- this.clearTimer();
- };
- _proto.switchParams = function switchParams(playlistUri, previous, current) {
- var renditionReports = previous == null ? void 0 : previous.renditionReports;
- if (renditionReports) {
- var foundIndex = -1;
- for (var i = 0; i < renditionReports.length; i++) {
- var attr = renditionReports[i];
- var uri = void 0;
- try {
- uri = new self.URL(attr.URI, previous.url).href;
- } catch (error) {
- logger.warn("Could not construct new URL for Rendition Report: " + error);
- uri = attr.URI || '';
- }
- // Use exact match. Otherwise, the last partial match, if any, will be used
- // (Playlist URI includes a query string that the Rendition Report does not)
- if (uri === playlistUri) {
- foundIndex = i;
- break;
- } else if (uri === playlistUri.substring(0, uri.length)) {
- foundIndex = i;
- }
- }
- if (foundIndex !== -1) {
- var _attr = renditionReports[foundIndex];
- var msn = parseInt(_attr['LAST-MSN']) || (previous == null ? void 0 : previous.lastPartSn);
- var part = parseInt(_attr['LAST-PART']) || (previous == null ? void 0 : previous.lastPartIndex);
- if (this.hls.config.lowLatencyMode) {
- var currentGoal = Math.min(previous.age - previous.partTarget, previous.targetduration);
- if (part >= 0 && currentGoal > previous.partTarget) {
- part += 1;
- }
- }
- var skip = current && getSkipValue(current);
- return new HlsUrlParameters(msn, part >= 0 ? part : undefined, skip);
- }
- }
- };
- _proto.loadPlaylist = function loadPlaylist(hlsUrlParameters) {
- if (this.requestScheduled === -1) {
- this.requestScheduled = self.performance.now();
- }
- // Loading is handled by the subclasses
- };
- _proto.shouldLoadPlaylist = function shouldLoadPlaylist(playlist) {
- return this.canLoad && !!playlist && !!playlist.url && (!playlist.details || playlist.details.live);
- };
- _proto.shouldReloadPlaylist = function shouldReloadPlaylist(playlist) {
- return this.timer === -1 && this.requestScheduled === -1 && this.shouldLoadPlaylist(playlist);
- };
- _proto.playlistLoaded = function playlistLoaded(index, data, previousDetails) {
- var _this = this;
- var details = data.details,
- stats = data.stats;
-
- // Set last updated date-time
- var now = self.performance.now();
- var elapsed = stats.loading.first ? Math.max(0, now - stats.loading.first) : 0;
- details.advancedDateTime = Date.now() - elapsed;
-
- // if current playlist is a live playlist, arm a timer to reload it
- if (details.live || previousDetails != null && previousDetails.live) {
- details.reloaded(previousDetails);
- if (previousDetails) {
- this.log("live playlist " + index + " " + (details.advanced ? 'REFRESHED ' + details.lastPartSn + '-' + details.lastPartIndex : details.updated ? 'UPDATED' : 'MISSED'));
- }
- // Merge live playlists to adjust fragment starts and fill in delta playlist skipped segments
- if (previousDetails && details.fragments.length > 0) {
- mergeDetails(previousDetails, details);
- }
- if (!this.canLoad || !details.live) {
- return;
- }
- var deliveryDirectives;
- var msn = undefined;
- var part = undefined;
- if (details.canBlockReload && details.endSN && details.advanced) {
- // Load level with LL-HLS delivery directives
- var lowLatencyMode = this.hls.config.lowLatencyMode;
- var lastPartSn = details.lastPartSn;
- var endSn = details.endSN;
- var lastPartIndex = details.lastPartIndex;
- var hasParts = lastPartIndex !== -1;
- var lastPart = lastPartSn === endSn;
- // When low latency mode is disabled, we'll skip part requests once the last part index is found
- var nextSnStartIndex = lowLatencyMode ? 0 : lastPartIndex;
- if (hasParts) {
- msn = lastPart ? endSn + 1 : lastPartSn;
- part = lastPart ? nextSnStartIndex : lastPartIndex + 1;
- } else {
- msn = endSn + 1;
- }
- // Low-Latency CDN Tune-in: "age" header and time since load indicates we're behind by more than one part
- // Update directives to obtain the Playlist that has the estimated additional duration of media
- var lastAdvanced = details.age;
- var cdnAge = lastAdvanced + details.ageHeader;
- var currentGoal = Math.min(cdnAge - details.partTarget, details.targetduration * 1.5);
- if (currentGoal > 0) {
- if (previousDetails && currentGoal > previousDetails.tuneInGoal) {
- // If we attempted to get the next or latest playlist update, but currentGoal increased,
- // then we either can't catchup, or the "age" header cannot be trusted.
- this.warn("CDN Tune-in goal increased from: " + previousDetails.tuneInGoal + " to: " + currentGoal + " with playlist age: " + details.age);
- currentGoal = 0;
- } else {
- var segments = Math.floor(currentGoal / details.targetduration);
- msn += segments;
- if (part !== undefined) {
- var parts = Math.round(currentGoal % details.targetduration / details.partTarget);
- part += parts;
- }
- this.log("CDN Tune-in age: " + details.ageHeader + "s last advanced " + lastAdvanced.toFixed(2) + "s goal: " + currentGoal + " skip sn " + segments + " to part " + part);
- }
- details.tuneInGoal = currentGoal;
- }
- deliveryDirectives = this.getDeliveryDirectives(details, data.deliveryDirectives, msn, part);
- if (lowLatencyMode || !lastPart) {
- this.loadPlaylist(deliveryDirectives);
- return;
- }
- } else if (details.canBlockReload || details.canSkipUntil) {
- deliveryDirectives = this.getDeliveryDirectives(details, data.deliveryDirectives, msn, part);
- }
- var bufferInfo = this.hls.mainForwardBufferInfo;
- var position = bufferInfo ? bufferInfo.end - bufferInfo.len : 0;
- var distanceToLiveEdgeMs = (details.edge - position) * 1000;
- var reloadInterval = computeReloadInterval(details, distanceToLiveEdgeMs);
- if (details.updated && now > this.requestScheduled + reloadInterval) {
- this.requestScheduled = stats.loading.start;
- }
- if (msn !== undefined && details.canBlockReload) {
- this.requestScheduled = stats.loading.first + reloadInterval - (details.partTarget * 1000 || 1000);
- } else if (this.requestScheduled === -1 || this.requestScheduled + reloadInterval < now) {
- this.requestScheduled = now;
- } else if (this.requestScheduled - now <= 0) {
- this.requestScheduled += reloadInterval;
- }
- var estimatedTimeUntilUpdate = this.requestScheduled - now;
- estimatedTimeUntilUpdate = Math.max(0, estimatedTimeUntilUpdate);
- this.log("reload live playlist " + index + " in " + Math.round(estimatedTimeUntilUpdate) + " ms");
- // this.log(
- // `live reload ${details.updated ? 'REFRESHED' : 'MISSED'}
- // reload in ${estimatedTimeUntilUpdate / 1000}
- // round trip ${(stats.loading.end - stats.loading.start) / 1000}
- // diff ${
- // (reloadInterval -
- // (estimatedTimeUntilUpdate +
- // stats.loading.end -
- // stats.loading.start)) /
- // 1000
- // }
- // reload interval ${reloadInterval / 1000}
- // target duration ${details.targetduration}
- // distance to edge ${distanceToLiveEdgeMs / 1000}`
- // );
-
- this.timer = self.setTimeout(function () {
- return _this.loadPlaylist(deliveryDirectives);
- }, estimatedTimeUntilUpdate);
- } else {
- this.clearTimer();
- }
- };
- _proto.getDeliveryDirectives = function getDeliveryDirectives(details, previousDeliveryDirectives, msn, part) {
- var skip = getSkipValue(details);
- if (previousDeliveryDirectives != null && previousDeliveryDirectives.skip && details.deltaUpdateFailed) {
- msn = previousDeliveryDirectives.msn;
- part = previousDeliveryDirectives.part;
- skip = HlsSkip.No;
- }
- return new HlsUrlParameters(msn, part, skip);
- };
- _proto.checkRetry = function checkRetry(errorEvent) {
- var _this2 = this;
- var errorDetails = errorEvent.details;
- var isTimeout = isTimeoutError(errorEvent);
- var errorAction = errorEvent.errorAction;
- var _ref = errorAction || {},
- action = _ref.action,
- _ref$retryCount = _ref.retryCount,
- retryCount = _ref$retryCount === void 0 ? 0 : _ref$retryCount,
- retryConfig = _ref.retryConfig;
- var retry = !!errorAction && !!retryConfig && (action === NetworkErrorAction.RetryRequest || !errorAction.resolved && action === NetworkErrorAction.SendAlternateToPenaltyBox);
- if (retry) {
- var _errorEvent$context;
- this.requestScheduled = -1;
- if (retryCount >= retryConfig.maxNumRetry) {
- return false;
- }
- if (isTimeout && (_errorEvent$context = errorEvent.context) != null && _errorEvent$context.deliveryDirectives) {
- // The LL-HLS request already timed out so retry immediately
- this.warn("Retrying playlist loading " + (retryCount + 1) + "/" + retryConfig.maxNumRetry + " after \"" + errorDetails + "\" without delivery-directives");
- this.loadPlaylist();
- } else {
- var delay = getRetryDelay(retryConfig, retryCount);
- // Schedule level/track reload
- this.timer = self.setTimeout(function () {
- return _this2.loadPlaylist();
- }, delay);
- this.warn("Retrying playlist loading " + (retryCount + 1) + "/" + retryConfig.maxNumRetry + " after \"" + errorDetails + "\" in " + delay + "ms");
- }
- // `levelRetry = true` used to inform other controllers that a retry is happening
- errorEvent.levelRetry = true;
- errorAction.resolved = true;
- }
- return retry;
- };
- return BasePlaylistController;
- }();
-
- /*
- * compute an Exponential Weighted moving average
- * - https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average
- * - heavily inspired from shaka-player
- */
- var EWMA = /*#__PURE__*/function () {
- // About half of the estimated value will be from the last |halfLife| samples by weight.
- function EWMA(halfLife, estimate, weight) {
- if (estimate === void 0) {
- estimate = 0;
- }
- if (weight === void 0) {
- weight = 0;
- }
- this.halfLife = void 0;
- this.alpha_ = void 0;
- this.estimate_ = void 0;
- this.totalWeight_ = void 0;
- this.halfLife = halfLife;
- // Larger values of alpha expire historical data more slowly.
- this.alpha_ = halfLife ? Math.exp(Math.log(0.5) / halfLife) : 0;
- this.estimate_ = estimate;
- this.totalWeight_ = weight;
- }
- var _proto = EWMA.prototype;
- _proto.sample = function sample(weight, value) {
- var adjAlpha = Math.pow(this.alpha_, weight);
- this.estimate_ = value * (1 - adjAlpha) + adjAlpha * this.estimate_;
- this.totalWeight_ += weight;
- };
- _proto.getTotalWeight = function getTotalWeight() {
- return this.totalWeight_;
- };
- _proto.getEstimate = function getEstimate() {
- if (this.alpha_) {
- var zeroFactor = 1 - Math.pow(this.alpha_, this.totalWeight_);
- if (zeroFactor) {
- return this.estimate_ / zeroFactor;
- }
- }
- return this.estimate_;
- };
- return EWMA;
- }();
-
- /*
- * EWMA Bandwidth Estimator
- * - heavily inspired from shaka-player
- * Tracks bandwidth samples and estimates available bandwidth.
- * Based on the minimum of two exponentially-weighted moving averages with
- * different half-lives.
- */
-
- var EwmaBandWidthEstimator = /*#__PURE__*/function () {
- function EwmaBandWidthEstimator(slow, fast, defaultEstimate, defaultTTFB) {
- if (defaultTTFB === void 0) {
- defaultTTFB = 100;
- }
- this.defaultEstimate_ = void 0;
- this.minWeight_ = void 0;
- this.minDelayMs_ = void 0;
- this.slow_ = void 0;
- this.fast_ = void 0;
- this.defaultTTFB_ = void 0;
- this.ttfb_ = void 0;
- this.defaultEstimate_ = defaultEstimate;
- this.minWeight_ = 0.001;
- this.minDelayMs_ = 50;
- this.slow_ = new EWMA(slow);
- this.fast_ = new EWMA(fast);
- this.defaultTTFB_ = defaultTTFB;
- this.ttfb_ = new EWMA(slow);
- }
- var _proto = EwmaBandWidthEstimator.prototype;
- _proto.update = function update(slow, fast) {
- var slow_ = this.slow_,
- fast_ = this.fast_,
- ttfb_ = this.ttfb_;
- if (slow_.halfLife !== slow) {
- this.slow_ = new EWMA(slow, slow_.getEstimate(), slow_.getTotalWeight());
- }
- if (fast_.halfLife !== fast) {
- this.fast_ = new EWMA(fast, fast_.getEstimate(), fast_.getTotalWeight());
- }
- if (ttfb_.halfLife !== slow) {
- this.ttfb_ = new EWMA(slow, ttfb_.getEstimate(), ttfb_.getTotalWeight());
- }
- };
- _proto.sample = function sample(durationMs, numBytes) {
- durationMs = Math.max(durationMs, this.minDelayMs_);
- var numBits = 8 * numBytes;
- // weight is duration in seconds
- var durationS = durationMs / 1000;
- // value is bandwidth in bits/s
- var bandwidthInBps = numBits / durationS;
- this.fast_.sample(durationS, bandwidthInBps);
- this.slow_.sample(durationS, bandwidthInBps);
- };
- _proto.sampleTTFB = function sampleTTFB(ttfb) {
- // weight is frequency curve applied to TTFB in seconds
- // (longer times have less weight with expected input under 1 second)
- var seconds = ttfb / 1000;
- var weight = Math.sqrt(2) * Math.exp(-Math.pow(seconds, 2) / 2);
- this.ttfb_.sample(weight, Math.max(ttfb, 5));
- };
- _proto.canEstimate = function canEstimate() {
- return this.fast_.getTotalWeight() >= this.minWeight_;
- };
- _proto.getEstimate = function getEstimate() {
- if (this.canEstimate()) {
- // console.log('slow estimate:'+ Math.round(this.slow_.getEstimate()));
- // console.log('fast estimate:'+ Math.round(this.fast_.getEstimate()));
- // Take the minimum of these two estimates. This should have the effect of
- // adapting down quickly, but up more slowly.
- return Math.min(this.fast_.getEstimate(), this.slow_.getEstimate());
- } else {
- return this.defaultEstimate_;
- }
- };
- _proto.getEstimateTTFB = function getEstimateTTFB() {
- if (this.ttfb_.getTotalWeight() >= this.minWeight_) {
- return this.ttfb_.getEstimate();
- } else {
- return this.defaultTTFB_;
- }
- };
- _proto.destroy = function destroy() {};
- return EwmaBandWidthEstimator;
- }();
-
- var SUPPORTED_INFO_DEFAULT = {
- supported: true,
- configurations: [],
- decodingInfoResults: [{
- supported: true,
- powerEfficient: true,
- smooth: true
- }]
- };
- var SUPPORTED_INFO_CACHE = {};
- function requiresMediaCapabilitiesDecodingInfo(level, audioTracksByGroup, currentVideoRange, currentFrameRate, currentBw, audioPreference) {
- // Only test support when configuration is exceeds minimum options
- var audioGroups = level.audioCodec ? level.audioGroups : null;
- var audioCodecPreference = audioPreference == null ? void 0 : audioPreference.audioCodec;
- var channelsPreference = audioPreference == null ? void 0 : audioPreference.channels;
- var maxChannels = channelsPreference ? parseInt(channelsPreference) : audioCodecPreference ? Infinity : 2;
- var audioChannels = null;
- if (audioGroups != null && audioGroups.length) {
- try {
- if (audioGroups.length === 1 && audioGroups[0]) {
- audioChannels = audioTracksByGroup.groups[audioGroups[0]].channels;
- } else {
- audioChannels = audioGroups.reduce(function (acc, groupId) {
- if (groupId) {
- var audioTrackGroup = audioTracksByGroup.groups[groupId];
- if (!audioTrackGroup) {
- throw new Error("Audio track group " + groupId + " not found");
- }
- // Sum all channel key values
- Object.keys(audioTrackGroup.channels).forEach(function (key) {
- acc[key] = (acc[key] || 0) + audioTrackGroup.channels[key];
- });
- }
- return acc;
- }, {
- 2: 0
- });
- }
- } catch (error) {
- return true;
- }
- }
- return level.videoCodec !== undefined && (level.width > 1920 && level.height > 1088 || level.height > 1920 && level.width > 1088 || level.frameRate > Math.max(currentFrameRate, 30) || level.videoRange !== 'SDR' && level.videoRange !== currentVideoRange || level.bitrate > Math.max(currentBw, 8e6)) || !!audioChannels && isFiniteNumber(maxChannels) && Object.keys(audioChannels).some(function (channels) {
- return parseInt(channels) > maxChannels;
- });
- }
- function getMediaDecodingInfoPromise(level, audioTracksByGroup, mediaCapabilities) {
- var videoCodecs = level.videoCodec;
- var audioCodecs = level.audioCodec;
- if (!videoCodecs || !audioCodecs || !mediaCapabilities) {
- return Promise.resolve(SUPPORTED_INFO_DEFAULT);
- }
- var baseVideoConfiguration = {
- width: level.width,
- height: level.height,
- bitrate: Math.ceil(Math.max(level.bitrate * 0.9, level.averageBitrate)),
- // Assume a framerate of 30fps since MediaCapabilities will not accept Level default of 0.
- framerate: level.frameRate || 30
- };
- var videoRange = level.videoRange;
- if (videoRange !== 'SDR') {
- baseVideoConfiguration.transferFunction = videoRange.toLowerCase();
- }
- var configurations = videoCodecs.split(',').map(function (videoCodec) {
- return {
- type: 'media-source',
- video: _objectSpread2(_objectSpread2({}, baseVideoConfiguration), {}, {
- contentType: mimeTypeForCodec(videoCodec, 'video')
- })
- };
- });
- if (audioCodecs && level.audioGroups) {
- level.audioGroups.forEach(function (audioGroupId) {
- var _audioTracksByGroup$g;
- if (!audioGroupId) {
- return;
- }
- (_audioTracksByGroup$g = audioTracksByGroup.groups[audioGroupId]) == null ? void 0 : _audioTracksByGroup$g.tracks.forEach(function (audioTrack) {
- if (audioTrack.groupId === audioGroupId) {
- var channels = audioTrack.channels || '';
- var channelsNumber = parseFloat(channels);
- if (isFiniteNumber(channelsNumber) && channelsNumber > 2) {
- configurations.push.apply(configurations, audioCodecs.split(',').map(function (audioCodec) {
- return {
- type: 'media-source',
- audio: {
- contentType: mimeTypeForCodec(audioCodec, 'audio'),
- channels: '' + channelsNumber
- // spatialRendering:
- // audioCodec === 'ec-3' && channels.indexOf('JOC'),
- }
- };
- }));
- }
- }
- });
- });
- }
- return Promise.all(configurations.map(function (configuration) {
- // Cache MediaCapabilities promises
- var decodingInfoKey = getMediaDecodingInfoKey(configuration);
- return SUPPORTED_INFO_CACHE[decodingInfoKey] || (SUPPORTED_INFO_CACHE[decodingInfoKey] = mediaCapabilities.decodingInfo(configuration));
- })).then(function (decodingInfoResults) {
- return {
- supported: !decodingInfoResults.some(function (info) {
- return !info.supported;
- }),
- configurations: configurations,
- decodingInfoResults: decodingInfoResults
- };
- }).catch(function (error) {
- return {
- supported: false,
- configurations: configurations,
- decodingInfoResults: [],
- error: error
- };
- });
- }
- function getMediaDecodingInfoKey(config) {
- var audio = config.audio,
- video = config.video;
- var mediaConfig = video || audio;
- if (mediaConfig) {
- var codec = mediaConfig.contentType.split('"')[1];
- if (video) {
- return "r" + video.height + "x" + video.width + "f" + Math.ceil(video.framerate) + (video.transferFunction || 'sd') + "_" + codec + "_" + Math.ceil(video.bitrate / 1e5);
- }
- if (audio) {
- return "c" + audio.channels + (audio.spatialRendering ? 's' : 'n') + "_" + codec;
- }
- }
- return '';
- }
-
- /**
- * @returns Whether we can detect and validate HDR capability within the window context
- */
- function isHdrSupported() {
- if (typeof matchMedia === 'function') {
- var mediaQueryList = matchMedia('(dynamic-range: high)');
- var badQuery = matchMedia('bad query');
- if (mediaQueryList.media !== badQuery.media) {
- return mediaQueryList.matches === true;
- }
- }
- return false;
- }
-
- /**
- * Sanitizes inputs to return the active video selection options for HDR/SDR.
- * When both inputs are null:
- *
- * `{ preferHDR: false, allowedVideoRanges: [] }`
- *
- * When `currentVideoRange` non-null, maintain the active range:
- *
- * `{ preferHDR: currentVideoRange !== 'SDR', allowedVideoRanges: [currentVideoRange] }`
- *
- * When VideoSelectionOption non-null:
- *
- * - Allow all video ranges if `allowedVideoRanges` unspecified.
- * - If `preferHDR` is non-null use the value to filter `allowedVideoRanges`.
- * - Else check window for HDR support and set `preferHDR` to the result.
- *
- * @param currentVideoRange
- * @param videoPreference
- */
- function getVideoSelectionOptions(currentVideoRange, videoPreference) {
- var preferHDR = false;
- var allowedVideoRanges = [];
- if (currentVideoRange) {
- preferHDR = currentVideoRange !== 'SDR';
- allowedVideoRanges = [currentVideoRange];
- }
- if (videoPreference) {
- allowedVideoRanges = videoPreference.allowedVideoRanges || VideoRangeValues.slice(0);
- preferHDR = videoPreference.preferHDR !== undefined ? videoPreference.preferHDR : isHdrSupported();
- if (preferHDR) {
- allowedVideoRanges = allowedVideoRanges.filter(function (range) {
- return range !== 'SDR';
- });
- } else {
- allowedVideoRanges = ['SDR'];
- }
- }
- return {
- preferHDR: preferHDR,
- allowedVideoRanges: allowedVideoRanges
- };
- }
-
- function getStartCodecTier(codecTiers, currentVideoRange, currentBw, audioPreference, videoPreference) {
- var codecSets = Object.keys(codecTiers);
- var channelsPreference = audioPreference == null ? void 0 : audioPreference.channels;
- var audioCodecPreference = audioPreference == null ? void 0 : audioPreference.audioCodec;
- var preferStereo = channelsPreference && parseInt(channelsPreference) === 2;
- // Use first level set to determine stereo, and minimum resolution and framerate
- var hasStereo = true;
- var hasCurrentVideoRange = false;
- var minHeight = Infinity;
- var minFramerate = Infinity;
- var minBitrate = Infinity;
- var selectedScore = 0;
- var videoRanges = [];
- var _getVideoSelectionOpt = getVideoSelectionOptions(currentVideoRange, videoPreference),
- preferHDR = _getVideoSelectionOpt.preferHDR,
- allowedVideoRanges = _getVideoSelectionOpt.allowedVideoRanges;
- var _loop = function _loop() {
- var tier = codecTiers[codecSets[i]];
- hasStereo = tier.channels[2] > 0;
- minHeight = Math.min(minHeight, tier.minHeight);
- minFramerate = Math.min(minFramerate, tier.minFramerate);
- minBitrate = Math.min(minBitrate, tier.minBitrate);
- var matchingVideoRanges = allowedVideoRanges.filter(function (range) {
- return tier.videoRanges[range] > 0;
- });
- if (matchingVideoRanges.length > 0) {
- hasCurrentVideoRange = true;
- videoRanges = matchingVideoRanges;
- }
- };
- for (var i = codecSets.length; i--;) {
- _loop();
- }
- minHeight = isFiniteNumber(minHeight) ? minHeight : 0;
- minFramerate = isFiniteNumber(minFramerate) ? minFramerate : 0;
- var maxHeight = Math.max(1080, minHeight);
- var maxFramerate = Math.max(30, minFramerate);
- minBitrate = isFiniteNumber(minBitrate) ? minBitrate : currentBw;
- currentBw = Math.max(minBitrate, currentBw);
- // If there are no variants with matching preference, set currentVideoRange to undefined
- if (!hasCurrentVideoRange) {
- currentVideoRange = undefined;
- videoRanges = [];
- }
- var codecSet = codecSets.reduce(function (selected, candidate) {
- // Remove candiates which do not meet bitrate, default audio, stereo or channels preference, 1080p or lower, 30fps or lower, or SDR/HDR selection if present
- var candidateTier = codecTiers[candidate];
- if (candidate === selected) {
- return selected;
- }
- if (candidateTier.minBitrate > currentBw) {
- logStartCodecCandidateIgnored(candidate, "min bitrate of " + candidateTier.minBitrate + " > current estimate of " + currentBw);
- return selected;
- }
- if (!candidateTier.hasDefaultAudio) {
- logStartCodecCandidateIgnored(candidate, "no renditions with default or auto-select sound found");
- return selected;
- }
- if (audioCodecPreference && candidate.indexOf(audioCodecPreference.substring(0, 4)) % 5 !== 0) {
- logStartCodecCandidateIgnored(candidate, "audio codec preference \"" + audioCodecPreference + "\" not found");
- return selected;
- }
- if (channelsPreference && !preferStereo) {
- if (!candidateTier.channels[channelsPreference]) {
- logStartCodecCandidateIgnored(candidate, "no renditions with " + channelsPreference + " channel sound found (channels options: " + Object.keys(candidateTier.channels) + ")");
- return selected;
- }
- } else if ((!audioCodecPreference || preferStereo) && hasStereo && candidateTier.channels['2'] === 0) {
- logStartCodecCandidateIgnored(candidate, "no renditions with stereo sound found");
- return selected;
- }
- if (candidateTier.minHeight > maxHeight) {
- logStartCodecCandidateIgnored(candidate, "min resolution of " + candidateTier.minHeight + " > maximum of " + maxHeight);
- return selected;
- }
- if (candidateTier.minFramerate > maxFramerate) {
- logStartCodecCandidateIgnored(candidate, "min framerate of " + candidateTier.minFramerate + " > maximum of " + maxFramerate);
- return selected;
- }
- if (!videoRanges.some(function (range) {
- return candidateTier.videoRanges[range] > 0;
- })) {
- logStartCodecCandidateIgnored(candidate, "no variants with VIDEO-RANGE of " + JSON.stringify(videoRanges) + " found");
- return selected;
- }
- if (candidateTier.maxScore < selectedScore) {
- logStartCodecCandidateIgnored(candidate, "max score of " + candidateTier.maxScore + " < selected max of " + selectedScore);
- return selected;
- }
- // Remove candiates with less preferred codecs or more errors
- if (selected && (codecsSetSelectionPreferenceValue(candidate) >= codecsSetSelectionPreferenceValue(selected) || candidateTier.fragmentError > codecTiers[selected].fragmentError)) {
- return selected;
- }
- selectedScore = candidateTier.maxScore;
- return candidate;
- }, undefined);
- return {
- codecSet: codecSet,
- videoRanges: videoRanges,
- preferHDR: preferHDR,
- minFramerate: minFramerate,
- minBitrate: minBitrate
- };
- }
- function logStartCodecCandidateIgnored(codeSet, reason) {
- logger.log("[abr] start candidates with \"" + codeSet + "\" ignored because " + reason);
- }
- function getAudioTracksByGroup(allAudioTracks) {
- return allAudioTracks.reduce(function (audioTracksByGroup, track) {
- var trackGroup = audioTracksByGroup.groups[track.groupId];
- if (!trackGroup) {
- trackGroup = audioTracksByGroup.groups[track.groupId] = {
- tracks: [],
- channels: {
- 2: 0
- },
- hasDefault: false,
- hasAutoSelect: false
- };
- }
- trackGroup.tracks.push(track);
- var channelsKey = track.channels || '2';
- trackGroup.channels[channelsKey] = (trackGroup.channels[channelsKey] || 0) + 1;
- trackGroup.hasDefault = trackGroup.hasDefault || track.default;
- trackGroup.hasAutoSelect = trackGroup.hasAutoSelect || track.autoselect;
- if (trackGroup.hasDefault) {
- audioTracksByGroup.hasDefaultAudio = true;
- }
- if (trackGroup.hasAutoSelect) {
- audioTracksByGroup.hasAutoSelectAudio = true;
- }
- return audioTracksByGroup;
- }, {
- hasDefaultAudio: false,
- hasAutoSelectAudio: false,
- groups: {}
- });
- }
- function getCodecTiers(levels, audioTracksByGroup, minAutoLevel, maxAutoLevel) {
- return levels.slice(minAutoLevel, maxAutoLevel + 1).reduce(function (tiers, level) {
- if (!level.codecSet) {
- return tiers;
- }
- var audioGroups = level.audioGroups;
- var tier = tiers[level.codecSet];
- if (!tier) {
- tiers[level.codecSet] = tier = {
- minBitrate: Infinity,
- minHeight: Infinity,
- minFramerate: Infinity,
- maxScore: 0,
- videoRanges: {
- SDR: 0
- },
- channels: {
- '2': 0
- },
- hasDefaultAudio: !audioGroups,
- fragmentError: 0
- };
- }
- tier.minBitrate = Math.min(tier.minBitrate, level.bitrate);
- var lesserWidthOrHeight = Math.min(level.height, level.width);
- tier.minHeight = Math.min(tier.minHeight, lesserWidthOrHeight);
- tier.minFramerate = Math.min(tier.minFramerate, level.frameRate);
- tier.maxScore = Math.max(tier.maxScore, level.score);
- tier.fragmentError += level.fragmentError;
- tier.videoRanges[level.videoRange] = (tier.videoRanges[level.videoRange] || 0) + 1;
- if (audioGroups) {
- audioGroups.forEach(function (audioGroupId) {
- if (!audioGroupId) {
- return;
- }
- var audioGroup = audioTracksByGroup.groups[audioGroupId];
- if (!audioGroup) {
- return;
- }
- // Default audio is any group with DEFAULT=YES, or if missing then any group with AUTOSELECT=YES, or all variants
- tier.hasDefaultAudio = tier.hasDefaultAudio || audioTracksByGroup.hasDefaultAudio ? audioGroup.hasDefault : audioGroup.hasAutoSelect || !audioTracksByGroup.hasDefaultAudio && !audioTracksByGroup.hasAutoSelectAudio;
- Object.keys(audioGroup.channels).forEach(function (channels) {
- tier.channels[channels] = (tier.channels[channels] || 0) + audioGroup.channels[channels];
- });
- });
- }
- return tiers;
- }, {});
- }
- function findMatchingOption(option, tracks, matchPredicate) {
- if ('attrs' in option) {
- var index = tracks.indexOf(option);
- if (index !== -1) {
- return index;
- }
- }
- for (var i = 0; i < tracks.length; i++) {
- var _track = tracks[i];
- if (matchesOption(option, _track, matchPredicate)) {
- return i;
- }
- }
- return -1;
- }
- function matchesOption(option, track, matchPredicate) {
- var groupId = option.groupId,
- name = option.name,
- lang = option.lang,
- assocLang = option.assocLang,
- characteristics = option.characteristics,
- isDefault = option.default;
- var forced = option.forced;
- return (groupId === undefined || track.groupId === groupId) && (name === undefined || track.name === name) && (lang === undefined || track.lang === lang) && (lang === undefined || track.assocLang === assocLang) && (isDefault === undefined || track.default === isDefault) && (forced === undefined || track.forced === forced) && (characteristics === undefined || characteristicsMatch(characteristics, track.characteristics)) && (matchPredicate === undefined || matchPredicate(option, track));
- }
- function characteristicsMatch(characteristicsA, characteristicsB) {
- if (characteristicsB === void 0) {
- characteristicsB = '';
- }
- var arrA = characteristicsA.split(',');
- var arrB = characteristicsB.split(',');
- // Expects each item to be unique:
- return arrA.length === arrB.length && !arrA.some(function (el) {
- return arrB.indexOf(el) === -1;
- });
- }
- function audioMatchPredicate(option, track) {
- var audioCodec = option.audioCodec,
- channels = option.channels;
- return (audioCodec === undefined || (track.audioCodec || '').substring(0, 4) === audioCodec.substring(0, 4)) && (channels === undefined || channels === (track.channels || '2'));
- }
- function findClosestLevelWithAudioGroup(option, levels, allAudioTracks, searchIndex, matchPredicate) {
- var currentLevel = levels[searchIndex];
- // Are there variants with same URI as current level?
- // If so, find a match that does not require any level URI change
- var variants = levels.reduce(function (variantMap, level, index) {
- var uri = level.uri;
- var renditions = variantMap[uri] || (variantMap[uri] = []);
- renditions.push(index);
- return variantMap;
- }, {});
- var renditions = variants[currentLevel.uri];
- if (renditions.length > 1) {
- searchIndex = Math.max.apply(Math, renditions);
- }
- // Find best match
- var currentVideoRange = currentLevel.videoRange;
- var currentFrameRate = currentLevel.frameRate;
- var currentVideoCodec = currentLevel.codecSet.substring(0, 4);
- var matchingVideo = searchDownAndUpList(levels, searchIndex, function (level) {
- if (level.videoRange !== currentVideoRange || level.frameRate !== currentFrameRate || level.codecSet.substring(0, 4) !== currentVideoCodec) {
- return false;
- }
- var audioGroups = level.audioGroups;
- var tracks = allAudioTracks.filter(function (track) {
- return !audioGroups || audioGroups.indexOf(track.groupId) !== -1;
- });
- return findMatchingOption(option, tracks, matchPredicate) > -1;
- });
- if (matchingVideo > -1) {
- return matchingVideo;
- }
- return searchDownAndUpList(levels, searchIndex, function (level) {
- var audioGroups = level.audioGroups;
- var tracks = allAudioTracks.filter(function (track) {
- return !audioGroups || audioGroups.indexOf(track.groupId) !== -1;
- });
- return findMatchingOption(option, tracks, matchPredicate) > -1;
- });
- }
- function searchDownAndUpList(arr, searchIndex, predicate) {
- for (var i = searchIndex; i; i--) {
- if (predicate(arr[i])) {
- return i;
- }
- }
- for (var _i = searchIndex + 1; _i < arr.length; _i++) {
- if (predicate(arr[_i])) {
- return _i;
- }
- }
- return -1;
- }
-
- var AbrController = /*#__PURE__*/function () {
- function AbrController(_hls) {
- var _this = this;
- this.hls = void 0;
- this.lastLevelLoadSec = 0;
- this.lastLoadedFragLevel = -1;
- this.firstSelection = -1;
- this._nextAutoLevel = -1;
- this.nextAutoLevelKey = '';
- this.audioTracksByGroup = null;
- this.codecTiers = null;
- this.timer = -1;
- this.fragCurrent = null;
- this.partCurrent = null;
- this.bitrateTestDelay = 0;
- this.bwEstimator = void 0;
- /*
- This method monitors the download rate of the current fragment, and will downswitch if that fragment will not load
- quickly enough to prevent underbuffering
- */
- this._abandonRulesCheck = function () {
- var frag = _this.fragCurrent,
- part = _this.partCurrent,
- hls = _this.hls;
- var autoLevelEnabled = hls.autoLevelEnabled,
- media = hls.media;
- if (!frag || !media) {
- return;
- }
- var now = performance.now();
- var stats = part ? part.stats : frag.stats;
- var duration = part ? part.duration : frag.duration;
- var timeLoading = now - stats.loading.start;
- var minAutoLevel = hls.minAutoLevel;
- // If frag loading is aborted, complete, or from lowest level, stop timer and return
- if (stats.aborted || stats.loaded && stats.loaded === stats.total || frag.level <= minAutoLevel) {
- _this.clearTimer();
- // reset forced auto level value so that next level will be selected
- _this._nextAutoLevel = -1;
- return;
- }
-
- // This check only runs if we're in ABR mode and actually playing
- if (!autoLevelEnabled || media.paused || !media.playbackRate || !media.readyState) {
- return;
- }
- var bufferInfo = hls.mainForwardBufferInfo;
- if (bufferInfo === null) {
- return;
- }
- var ttfbEstimate = _this.bwEstimator.getEstimateTTFB();
- var playbackRate = Math.abs(media.playbackRate);
- // To maintain stable adaptive playback, only begin monitoring frag loading after half or more of its playback duration has passed
- if (timeLoading <= Math.max(ttfbEstimate, 1000 * (duration / (playbackRate * 2)))) {
- return;
- }
-
- // bufferStarvationDelay is an estimate of the amount time (in seconds) it will take to exhaust the buffer
- var bufferStarvationDelay = bufferInfo.len / playbackRate;
- var ttfb = stats.loading.first ? stats.loading.first - stats.loading.start : -1;
- var loadedFirstByte = stats.loaded && ttfb > -1;
- var bwEstimate = _this.getBwEstimate();
- var levels = hls.levels;
- var level = levels[frag.level];
- var expectedLen = stats.total || Math.max(stats.loaded, Math.round(duration * level.averageBitrate / 8));
- var timeStreaming = loadedFirstByte ? timeLoading - ttfb : timeLoading;
- if (timeStreaming < 1 && loadedFirstByte) {
- timeStreaming = Math.min(timeLoading, stats.loaded * 8 / bwEstimate);
- }
- var loadRate = loadedFirstByte ? stats.loaded * 1000 / timeStreaming : 0;
- // fragLoadDelay is an estimate of the time (in seconds) it will take to buffer the remainder of the fragment
- var fragLoadedDelay = loadRate ? (expectedLen - stats.loaded) / loadRate : expectedLen * 8 / bwEstimate + ttfbEstimate / 1000;
- // Only downswitch if the time to finish loading the current fragment is greater than the amount of buffer left
- if (fragLoadedDelay <= bufferStarvationDelay) {
- return;
- }
- var bwe = loadRate ? loadRate * 8 : bwEstimate;
- var fragLevelNextLoadedDelay = Number.POSITIVE_INFINITY;
- var nextLoadLevel;
- // Iterate through lower level and try to find the largest one that avoids rebuffering
- for (nextLoadLevel = frag.level - 1; nextLoadLevel > minAutoLevel; nextLoadLevel--) {
- // compute time to load next fragment at lower level
- // 8 = bits per byte (bps/Bps)
- var levelNextBitrate = levels[nextLoadLevel].maxBitrate;
- fragLevelNextLoadedDelay = _this.getTimeToLoadFrag(ttfbEstimate / 1000, bwe, duration * levelNextBitrate, !levels[nextLoadLevel].details);
- if (fragLevelNextLoadedDelay < bufferStarvationDelay) {
- break;
- }
- }
- // Only emergency switch down if it takes less time to load a new fragment at lowest level instead of continuing
- // to load the current one
- if (fragLevelNextLoadedDelay >= fragLoadedDelay) {
- return;
- }
-
- // if estimated load time of new segment is completely unreasonable, ignore and do not emergency switch down
- if (fragLevelNextLoadedDelay > duration * 10) {
- return;
- }
- hls.nextLoadLevel = hls.nextAutoLevel = nextLoadLevel;
- if (loadedFirstByte) {
- // If there has been loading progress, sample bandwidth using loading time offset by minimum TTFB time
- _this.bwEstimator.sample(timeLoading - Math.min(ttfbEstimate, ttfb), stats.loaded);
- } else {
- // If there has been no loading progress, sample TTFB
- _this.bwEstimator.sampleTTFB(timeLoading);
- }
- var nextLoadLevelBitrate = levels[nextLoadLevel].maxBitrate;
- if (_this.getBwEstimate() * _this.hls.config.abrBandWidthUpFactor > nextLoadLevelBitrate) {
- _this.resetEstimator(nextLoadLevelBitrate);
- }
- _this.clearTimer();
- logger.warn("[abr] Fragment " + frag.sn + (part ? ' part ' + part.index : '') + " of level " + frag.level + " is loading too slowly;\n Time to underbuffer: " + bufferStarvationDelay.toFixed(3) + " s\n Estimated load time for current fragment: " + fragLoadedDelay.toFixed(3) + " s\n Estimated load time for down switch fragment: " + fragLevelNextLoadedDelay.toFixed(3) + " s\n TTFB estimate: " + (ttfb | 0) + " ms\n Current BW estimate: " + (isFiniteNumber(bwEstimate) ? bwEstimate | 0 : 'Unknown') + " bps\n New BW estimate: " + (_this.getBwEstimate() | 0) + " bps\n Switching to level " + nextLoadLevel + " @ " + (nextLoadLevelBitrate | 0) + " bps");
- hls.trigger(Events.FRAG_LOAD_EMERGENCY_ABORTED, {
- frag: frag,
- part: part,
- stats: stats
- });
- };
- this.hls = _hls;
- this.bwEstimator = this.initEstimator();
- this.registerListeners();
- }
- var _proto = AbrController.prototype;
- _proto.resetEstimator = function resetEstimator(abrEwmaDefaultEstimate) {
- if (abrEwmaDefaultEstimate) {
- logger.log("setting initial bwe to " + abrEwmaDefaultEstimate);
- this.hls.config.abrEwmaDefaultEstimate = abrEwmaDefaultEstimate;
- }
- this.firstSelection = -1;
- this.bwEstimator = this.initEstimator();
- };
- _proto.initEstimator = function initEstimator() {
- var config = this.hls.config;
- return new EwmaBandWidthEstimator(config.abrEwmaSlowVoD, config.abrEwmaFastVoD, config.abrEwmaDefaultEstimate);
- };
- _proto.registerListeners = function registerListeners() {
- var hls = this.hls;
- hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.on(Events.FRAG_LOADING, this.onFragLoading, this);
- hls.on(Events.FRAG_LOADED, this.onFragLoaded, this);
- hls.on(Events.FRAG_BUFFERED, this.onFragBuffered, this);
- hls.on(Events.LEVEL_SWITCHING, this.onLevelSwitching, this);
- hls.on(Events.LEVEL_LOADED, this.onLevelLoaded, this);
- hls.on(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
- hls.on(Events.MAX_AUTO_LEVEL_UPDATED, this.onMaxAutoLevelUpdated, this);
- hls.on(Events.ERROR, this.onError, this);
- };
- _proto.unregisterListeners = function unregisterListeners() {
- var hls = this.hls;
- if (!hls) {
- return;
- }
- hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.off(Events.FRAG_LOADING, this.onFragLoading, this);
- hls.off(Events.FRAG_LOADED, this.onFragLoaded, this);
- hls.off(Events.FRAG_BUFFERED, this.onFragBuffered, this);
- hls.off(Events.LEVEL_SWITCHING, this.onLevelSwitching, this);
- hls.off(Events.LEVEL_LOADED, this.onLevelLoaded, this);
- hls.off(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
- hls.off(Events.MAX_AUTO_LEVEL_UPDATED, this.onMaxAutoLevelUpdated, this);
- hls.off(Events.ERROR, this.onError, this);
- };
- _proto.destroy = function destroy() {
- this.unregisterListeners();
- this.clearTimer();
- // @ts-ignore
- this.hls = this._abandonRulesCheck = null;
- this.fragCurrent = this.partCurrent = null;
- };
- _proto.onManifestLoading = function onManifestLoading(event, data) {
- this.lastLoadedFragLevel = -1;
- this.firstSelection = -1;
- this.lastLevelLoadSec = 0;
- this.fragCurrent = this.partCurrent = null;
- this.onLevelsUpdated();
- this.clearTimer();
- };
- _proto.onLevelsUpdated = function onLevelsUpdated() {
- if (this.lastLoadedFragLevel > -1 && this.fragCurrent) {
- this.lastLoadedFragLevel = this.fragCurrent.level;
- }
- this._nextAutoLevel = -1;
- this.onMaxAutoLevelUpdated();
- this.codecTiers = null;
- this.audioTracksByGroup = null;
- };
- _proto.onMaxAutoLevelUpdated = function onMaxAutoLevelUpdated() {
- this.firstSelection = -1;
- this.nextAutoLevelKey = '';
- };
- _proto.onFragLoading = function onFragLoading(event, data) {
- var frag = data.frag;
- if (this.ignoreFragment(frag)) {
- return;
- }
- if (!frag.bitrateTest) {
- var _data$part;
- this.fragCurrent = frag;
- this.partCurrent = (_data$part = data.part) != null ? _data$part : null;
- }
- this.clearTimer();
- this.timer = self.setInterval(this._abandonRulesCheck, 100);
- };
- _proto.onLevelSwitching = function onLevelSwitching(event, data) {
- this.clearTimer();
- };
- _proto.onError = function onError(event, data) {
- if (data.fatal) {
- return;
- }
- switch (data.details) {
- case ErrorDetails.BUFFER_ADD_CODEC_ERROR:
- case ErrorDetails.BUFFER_APPEND_ERROR:
- // Reset last loaded level so that a new selection can be made after calling recoverMediaError
- this.lastLoadedFragLevel = -1;
- this.firstSelection = -1;
- break;
- case ErrorDetails.FRAG_LOAD_TIMEOUT:
- {
- var frag = data.frag;
- var fragCurrent = this.fragCurrent,
- part = this.partCurrent;
- if (frag && fragCurrent && frag.sn === fragCurrent.sn && frag.level === fragCurrent.level) {
- var now = performance.now();
- var stats = part ? part.stats : frag.stats;
- var timeLoading = now - stats.loading.start;
- var ttfb = stats.loading.first ? stats.loading.first - stats.loading.start : -1;
- var loadedFirstByte = stats.loaded && ttfb > -1;
- if (loadedFirstByte) {
- var ttfbEstimate = this.bwEstimator.getEstimateTTFB();
- this.bwEstimator.sample(timeLoading - Math.min(ttfbEstimate, ttfb), stats.loaded);
- } else {
- this.bwEstimator.sampleTTFB(timeLoading);
- }
- }
- break;
- }
- }
- };
- _proto.getTimeToLoadFrag = function getTimeToLoadFrag(timeToFirstByteSec, bandwidth, fragSizeBits, isSwitch) {
- var fragLoadSec = timeToFirstByteSec + fragSizeBits / bandwidth;
- var playlistLoadSec = isSwitch ? this.lastLevelLoadSec : 0;
- return fragLoadSec + playlistLoadSec;
- };
- _proto.onLevelLoaded = function onLevelLoaded(event, data) {
- var config = this.hls.config;
- var loading = data.stats.loading;
- var timeLoadingMs = loading.end - loading.start;
- if (isFiniteNumber(timeLoadingMs)) {
- this.lastLevelLoadSec = timeLoadingMs / 1000;
- }
- if (data.details.live) {
- this.bwEstimator.update(config.abrEwmaSlowLive, config.abrEwmaFastLive);
- } else {
- this.bwEstimator.update(config.abrEwmaSlowVoD, config.abrEwmaFastVoD);
- }
- };
- _proto.onFragLoaded = function onFragLoaded(event, _ref) {
- var frag = _ref.frag,
- part = _ref.part;
- var stats = part ? part.stats : frag.stats;
- if (frag.type === PlaylistLevelType.MAIN) {
- this.bwEstimator.sampleTTFB(stats.loading.first - stats.loading.start);
- }
- if (this.ignoreFragment(frag)) {
- return;
- }
- // stop monitoring bw once frag loaded
- this.clearTimer();
- // reset forced auto level value so that next level will be selected
- if (frag.level === this._nextAutoLevel) {
- this._nextAutoLevel = -1;
- }
- this.firstSelection = -1;
-
- // compute level average bitrate
- if (this.hls.config.abrMaxWithRealBitrate) {
- var duration = part ? part.duration : frag.duration;
- var level = this.hls.levels[frag.level];
- var loadedBytes = (level.loaded ? level.loaded.bytes : 0) + stats.loaded;
- var loadedDuration = (level.loaded ? level.loaded.duration : 0) + duration;
- level.loaded = {
- bytes: loadedBytes,
- duration: loadedDuration
- };
- level.realBitrate = Math.round(8 * loadedBytes / loadedDuration);
- }
- if (frag.bitrateTest) {
- var fragBufferedData = {
- stats: stats,
- frag: frag,
- part: part,
- id: frag.type
- };
- this.onFragBuffered(Events.FRAG_BUFFERED, fragBufferedData);
- frag.bitrateTest = false;
- } else {
- // store level id after successful fragment load for playback
- this.lastLoadedFragLevel = frag.level;
- }
- };
- _proto.onFragBuffered = function onFragBuffered(event, data) {
- var frag = data.frag,
- part = data.part;
- var stats = part != null && part.stats.loaded ? part.stats : frag.stats;
- if (stats.aborted) {
- return;
- }
- if (this.ignoreFragment(frag)) {
- return;
- }
- // Use the difference between parsing and request instead of buffering and request to compute fragLoadingProcessing;
- // rationale is that buffer appending only happens once media is attached. This can happen when config.startFragPrefetch
- // is used. If we used buffering in that case, our BW estimate sample will be very large.
- var processingMs = stats.parsing.end - stats.loading.start - Math.min(stats.loading.first - stats.loading.start, this.bwEstimator.getEstimateTTFB());
- this.bwEstimator.sample(processingMs, stats.loaded);
- stats.bwEstimate = this.getBwEstimate();
- if (frag.bitrateTest) {
- this.bitrateTestDelay = processingMs / 1000;
- } else {
- this.bitrateTestDelay = 0;
- }
- };
- _proto.ignoreFragment = function ignoreFragment(frag) {
- // Only count non-alt-audio frags which were actually buffered in our BW calculations
- return frag.type !== PlaylistLevelType.MAIN || frag.sn === 'initSegment';
- };
- _proto.clearTimer = function clearTimer() {
- if (this.timer > -1) {
- self.clearInterval(this.timer);
- this.timer = -1;
- }
- };
- _proto.getAutoLevelKey = function getAutoLevelKey() {
- return this.getBwEstimate() + "_" + this.getStarvationDelay().toFixed(2);
- };
- _proto.getNextABRAutoLevel = function getNextABRAutoLevel() {
- var fragCurrent = this.fragCurrent,
- partCurrent = this.partCurrent,
- hls = this.hls;
- var maxAutoLevel = hls.maxAutoLevel,
- config = hls.config,
- minAutoLevel = hls.minAutoLevel;
- var currentFragDuration = partCurrent ? partCurrent.duration : fragCurrent ? fragCurrent.duration : 0;
- var avgbw = this.getBwEstimate();
- // bufferStarvationDelay is the wall-clock time left until the playback buffer is exhausted.
- var bufferStarvationDelay = this.getStarvationDelay();
- var bwFactor = config.abrBandWidthFactor;
- var bwUpFactor = config.abrBandWidthUpFactor;
-
- // First, look to see if we can find a level matching with our avg bandwidth AND that could also guarantee no rebuffering at all
- if (bufferStarvationDelay) {
- var _bestLevel = this.findBestLevel(avgbw, minAutoLevel, maxAutoLevel, bufferStarvationDelay, 0, bwFactor, bwUpFactor);
- if (_bestLevel >= 0) {
- return _bestLevel;
- }
- }
- // not possible to get rid of rebuffering... try to find level that will guarantee less than maxStarvationDelay of rebuffering
- var maxStarvationDelay = currentFragDuration ? Math.min(currentFragDuration, config.maxStarvationDelay) : config.maxStarvationDelay;
- if (!bufferStarvationDelay) {
- // in case buffer is empty, let's check if previous fragment was loaded to perform a bitrate test
- var bitrateTestDelay = this.bitrateTestDelay;
- if (bitrateTestDelay) {
- // if it is the case, then we need to adjust our max starvation delay using maxLoadingDelay config value
- // max video loading delay used in automatic start level selection :
- // in that mode ABR controller will ensure that video loading time (ie the time to fetch the first fragment at lowest quality level +
- // the time to fetch the fragment at the appropriate quality level is less than ```maxLoadingDelay``` )
- // cap maxLoadingDelay and ensure it is not bigger 'than bitrate test' frag duration
- var maxLoadingDelay = currentFragDuration ? Math.min(currentFragDuration, config.maxLoadingDelay) : config.maxLoadingDelay;
- maxStarvationDelay = maxLoadingDelay - bitrateTestDelay;
- logger.info("[abr] bitrate test took " + Math.round(1000 * bitrateTestDelay) + "ms, set first fragment max fetchDuration to " + Math.round(1000 * maxStarvationDelay) + " ms");
- // don't use conservative factor on bitrate test
- bwFactor = bwUpFactor = 1;
- }
- }
- var bestLevel = this.findBestLevel(avgbw, minAutoLevel, maxAutoLevel, bufferStarvationDelay, maxStarvationDelay, bwFactor, bwUpFactor);
- logger.info("[abr] " + (bufferStarvationDelay ? 'rebuffering expected' : 'buffer is empty') + ", optimal quality level " + bestLevel);
- if (bestLevel > -1) {
- return bestLevel;
- }
- // If no matching level found, see if min auto level would be a better option
- var minLevel = hls.levels[minAutoLevel];
- var autoLevel = hls.levels[hls.loadLevel];
- if ((minLevel == null ? void 0 : minLevel.bitrate) < (autoLevel == null ? void 0 : autoLevel.bitrate)) {
- return minAutoLevel;
- }
- // or if bitrate is not lower, continue to use loadLevel
- return hls.loadLevel;
- };
- _proto.getStarvationDelay = function getStarvationDelay() {
- var hls = this.hls;
- var media = hls.media;
- if (!media) {
- return Infinity;
- }
- // playbackRate is the absolute value of the playback rate; if media.playbackRate is 0, we use 1 to load as
- // if we're playing back at the normal rate.
- var playbackRate = media && media.playbackRate !== 0 ? Math.abs(media.playbackRate) : 1.0;
- var bufferInfo = hls.mainForwardBufferInfo;
- return (bufferInfo ? bufferInfo.len : 0) / playbackRate;
- };
- _proto.getBwEstimate = function getBwEstimate() {
- return this.bwEstimator.canEstimate() ? this.bwEstimator.getEstimate() : this.hls.config.abrEwmaDefaultEstimate;
- };
- _proto.findBestLevel = function findBestLevel(currentBw, minAutoLevel, maxAutoLevel, bufferStarvationDelay, maxStarvationDelay, bwFactor, bwUpFactor) {
- var _level$details,
- _this2 = this;
- var maxFetchDuration = bufferStarvationDelay + maxStarvationDelay;
- var lastLoadedFragLevel = this.lastLoadedFragLevel;
- var selectionBaseLevel = lastLoadedFragLevel === -1 ? this.hls.firstLevel : lastLoadedFragLevel;
- var fragCurrent = this.fragCurrent,
- partCurrent = this.partCurrent;
- var _this$hls = this.hls,
- levels = _this$hls.levels,
- allAudioTracks = _this$hls.allAudioTracks,
- loadLevel = _this$hls.loadLevel,
- config = _this$hls.config;
- if (levels.length === 1) {
- return 0;
- }
- var level = levels[selectionBaseLevel];
- var live = !!(level != null && (_level$details = level.details) != null && _level$details.live);
- var firstSelection = loadLevel === -1 || lastLoadedFragLevel === -1;
- var currentCodecSet;
- var currentVideoRange = 'SDR';
- var currentFrameRate = (level == null ? void 0 : level.frameRate) || 0;
- var audioPreference = config.audioPreference,
- videoPreference = config.videoPreference;
- var audioTracksByGroup = this.audioTracksByGroup || (this.audioTracksByGroup = getAudioTracksByGroup(allAudioTracks));
- if (firstSelection) {
- if (this.firstSelection !== -1) {
- return this.firstSelection;
- }
- var codecTiers = this.codecTiers || (this.codecTiers = getCodecTiers(levels, audioTracksByGroup, minAutoLevel, maxAutoLevel));
- var startTier = getStartCodecTier(codecTiers, currentVideoRange, currentBw, audioPreference, videoPreference);
- var codecSet = startTier.codecSet,
- videoRanges = startTier.videoRanges,
- minFramerate = startTier.minFramerate,
- minBitrate = startTier.minBitrate,
- preferHDR = startTier.preferHDR;
- currentCodecSet = codecSet;
- currentVideoRange = preferHDR ? videoRanges[videoRanges.length - 1] : videoRanges[0];
- currentFrameRate = minFramerate;
- currentBw = Math.max(currentBw, minBitrate);
- logger.log("[abr] picked start tier " + JSON.stringify(startTier));
- } else {
- currentCodecSet = level == null ? void 0 : level.codecSet;
- currentVideoRange = level == null ? void 0 : level.videoRange;
- }
- var currentFragDuration = partCurrent ? partCurrent.duration : fragCurrent ? fragCurrent.duration : 0;
- var ttfbEstimateSec = this.bwEstimator.getEstimateTTFB() / 1000;
- var levelsSkipped = [];
- var _loop = function _loop() {
- var _levelInfo$supportedR;
- var levelInfo = levels[i];
- var upSwitch = i > selectionBaseLevel;
- if (!levelInfo) {
- return 0; // continue
- }
- if (config.useMediaCapabilities && !levelInfo.supportedResult && !levelInfo.supportedPromise) {
- var mediaCapabilities = navigator.mediaCapabilities;
- if (typeof (mediaCapabilities == null ? void 0 : mediaCapabilities.decodingInfo) === 'function' && requiresMediaCapabilitiesDecodingInfo(levelInfo, audioTracksByGroup, currentVideoRange, currentFrameRate, currentBw, audioPreference)) {
- levelInfo.supportedPromise = getMediaDecodingInfoPromise(levelInfo, audioTracksByGroup, mediaCapabilities);
- levelInfo.supportedPromise.then(function (decodingInfo) {
- if (!_this2.hls) {
- return;
- }
- levelInfo.supportedResult = decodingInfo;
- var levels = _this2.hls.levels;
- var index = levels.indexOf(levelInfo);
- if (decodingInfo.error) {
- logger.warn("[abr] MediaCapabilities decodingInfo error: \"" + decodingInfo.error + "\" for level " + index + " " + JSON.stringify(decodingInfo));
- } else if (!decodingInfo.supported) {
- logger.warn("[abr] Unsupported MediaCapabilities decodingInfo result for level " + index + " " + JSON.stringify(decodingInfo));
- if (index > -1 && levels.length > 1) {
- logger.log("[abr] Removing unsupported level " + index);
- _this2.hls.removeLevel(index);
- }
- }
- });
- } else {
- levelInfo.supportedResult = SUPPORTED_INFO_DEFAULT;
- }
- }
-
- // skip candidates which change codec-family or video-range,
- // and which decrease or increase frame-rate for up and down-switch respectfully
- if (currentCodecSet && levelInfo.codecSet !== currentCodecSet || currentVideoRange && levelInfo.videoRange !== currentVideoRange || upSwitch && currentFrameRate > levelInfo.frameRate || !upSwitch && currentFrameRate > 0 && currentFrameRate < levelInfo.frameRate || levelInfo.supportedResult && !((_levelInfo$supportedR = levelInfo.supportedResult.decodingInfoResults) != null && _levelInfo$supportedR[0].smooth)) {
- levelsSkipped.push(i);
- return 0; // continue
- }
- var levelDetails = levelInfo.details;
- var avgDuration = (partCurrent ? levelDetails == null ? void 0 : levelDetails.partTarget : levelDetails == null ? void 0 : levelDetails.averagetargetduration) || currentFragDuration;
- var adjustedbw;
- // follow algorithm captured from stagefright :
- // https://android.googlesource.com/platform/frameworks/av/+/master/media/libstagefright/httplive/LiveSession.cpp
- // Pick the highest bandwidth stream below or equal to estimated bandwidth.
- // consider only 80% of the available bandwidth, but if we are switching up,
- // be even more conservative (70%) to avoid overestimating and immediately
- // switching back.
- if (!upSwitch) {
- adjustedbw = bwFactor * currentBw;
- } else {
- adjustedbw = bwUpFactor * currentBw;
- }
-
- // Use average bitrate when starvation delay (buffer length) is gt or eq two segment durations and rebuffering is not expected (maxStarvationDelay > 0)
- var bitrate = currentFragDuration && bufferStarvationDelay >= currentFragDuration * 2 && maxStarvationDelay === 0 ? levels[i].averageBitrate : levels[i].maxBitrate;
- var fetchDuration = _this2.getTimeToLoadFrag(ttfbEstimateSec, adjustedbw, bitrate * avgDuration, levelDetails === undefined);
- var canSwitchWithinTolerance =
- // if adjusted bw is greater than level bitrate AND
- adjustedbw >= bitrate && (
- // no level change, or new level has no error history
- i === lastLoadedFragLevel || levelInfo.loadError === 0 && levelInfo.fragmentError === 0) && (
- // fragment fetchDuration unknown OR live stream OR fragment fetchDuration less than max allowed fetch duration, then this level matches
- // we don't account for max Fetch Duration for live streams, this is to avoid switching down when near the edge of live sliding window ...
- // special case to support startLevel = -1 (bitrateTest) on live streams : in that case we should not exit loop so that findBestLevel will return -1
- fetchDuration <= ttfbEstimateSec || !isFiniteNumber(fetchDuration) || live && !_this2.bitrateTestDelay || fetchDuration < maxFetchDuration);
- if (canSwitchWithinTolerance) {
- var forcedAutoLevel = _this2.forcedAutoLevel;
- if (i !== loadLevel && (forcedAutoLevel === -1 || forcedAutoLevel !== loadLevel)) {
- if (levelsSkipped.length) {
- logger.trace("[abr] Skipped level(s) " + levelsSkipped.join(',') + " of " + maxAutoLevel + " max with CODECS and VIDEO-RANGE:\"" + levels[levelsSkipped[0]].codecs + "\" " + levels[levelsSkipped[0]].videoRange + "; not compatible with \"" + level.codecs + "\" " + currentVideoRange);
- }
- logger.info("[abr] switch candidate:" + selectionBaseLevel + "->" + i + " adjustedbw(" + Math.round(adjustedbw) + ")-bitrate=" + Math.round(adjustedbw - bitrate) + " ttfb:" + ttfbEstimateSec.toFixed(1) + " avgDuration:" + avgDuration.toFixed(1) + " maxFetchDuration:" + maxFetchDuration.toFixed(1) + " fetchDuration:" + fetchDuration.toFixed(1) + " firstSelection:" + firstSelection + " codecSet:" + currentCodecSet + " videoRange:" + currentVideoRange + " hls.loadLevel:" + loadLevel);
- }
- if (firstSelection) {
- _this2.firstSelection = i;
- }
- // as we are looping from highest to lowest, this will return the best achievable quality level
- return {
- v: i
- };
- }
- },
- _ret;
- for (var i = maxAutoLevel; i >= minAutoLevel; i--) {
- _ret = _loop();
- if (_ret === 0) continue;
- if (_ret) return _ret.v;
- }
- // not enough time budget even with quality level 0 ... rebuffering might happen
- return -1;
- };
- _createClass(AbrController, [{
- key: "firstAutoLevel",
- get: function get() {
- var _this$hls2 = this.hls,
- maxAutoLevel = _this$hls2.maxAutoLevel,
- minAutoLevel = _this$hls2.minAutoLevel;
- var bwEstimate = this.getBwEstimate();
- var maxStartDelay = this.hls.config.maxStarvationDelay;
- var abrAutoLevel = this.findBestLevel(bwEstimate, minAutoLevel, maxAutoLevel, 0, maxStartDelay, 1, 1);
- if (abrAutoLevel > -1) {
- return abrAutoLevel;
- }
- var firstLevel = this.hls.firstLevel;
- var clamped = Math.min(Math.max(firstLevel, minAutoLevel), maxAutoLevel);
- logger.warn("[abr] Could not find best starting auto level. Defaulting to first in playlist " + firstLevel + " clamped to " + clamped);
- return clamped;
- }
- }, {
- key: "forcedAutoLevel",
- get: function get() {
- if (this.nextAutoLevelKey) {
- return -1;
- }
- return this._nextAutoLevel;
- }
-
- // return next auto level
- }, {
- key: "nextAutoLevel",
- get: function get() {
- var forcedAutoLevel = this.forcedAutoLevel;
- var bwEstimator = this.bwEstimator;
- var useEstimate = bwEstimator.canEstimate();
- var loadedFirstFrag = this.lastLoadedFragLevel > -1;
- // in case next auto level has been forced, and bw not available or not reliable, return forced value
- if (forcedAutoLevel !== -1 && (!useEstimate || !loadedFirstFrag || this.nextAutoLevelKey === this.getAutoLevelKey())) {
- return forcedAutoLevel;
- }
-
- // compute next level using ABR logic
- var nextABRAutoLevel = useEstimate && loadedFirstFrag ? this.getNextABRAutoLevel() : this.firstAutoLevel;
-
- // use forced auto level while it hasn't errored more than ABR selection
- if (forcedAutoLevel !== -1) {
- var levels = this.hls.levels;
- if (levels.length > Math.max(forcedAutoLevel, nextABRAutoLevel) && levels[forcedAutoLevel].loadError <= levels[nextABRAutoLevel].loadError) {
- return forcedAutoLevel;
- }
- }
-
- // save result until state has changed
- this._nextAutoLevel = nextABRAutoLevel;
- this.nextAutoLevelKey = this.getAutoLevelKey();
- return nextABRAutoLevel;
- },
- set: function set(nextLevel) {
- var _this$hls3 = this.hls,
- maxAutoLevel = _this$hls3.maxAutoLevel,
- minAutoLevel = _this$hls3.minAutoLevel;
- var value = Math.min(Math.max(nextLevel, minAutoLevel), maxAutoLevel);
- if (this._nextAutoLevel !== value) {
- this.nextAutoLevelKey = '';
- this._nextAutoLevel = value;
- }
- }
- }]);
- return AbrController;
- }();
-
- /**
- * @ignore
- * Sub-class specialization of EventHandler base class.
- *
- * TaskLoop allows to schedule a task function being called (optionnaly repeatedly) on the main loop,
- * scheduled asynchroneously, avoiding recursive calls in the same tick.
- *
- * The task itself is implemented in `doTick`. It can be requested and called for single execution
- * using the `tick` method.
- *
- * It will be assured that the task execution method (`tick`) only gets called once per main loop "tick",
- * no matter how often it gets requested for execution. Execution in further ticks will be scheduled accordingly.
- *
- * If further execution requests have already been scheduled on the next tick, it can be checked with `hasNextTick`,
- * and cancelled with `clearNextTick`.
- *
- * The task can be scheduled as an interval repeatedly with a period as parameter (see `setInterval`, `clearInterval`).
- *
- * Sub-classes need to implement the `doTick` method which will effectively have the task execution routine.
- *
- * Further explanations:
- *
- * The baseclass has a `tick` method that will schedule the doTick call. It may be called synchroneously
- * only for a stack-depth of one. On re-entrant calls, sub-sequent calls are scheduled for next main loop ticks.
- *
- * When the task execution (`tick` method) is called in re-entrant way this is detected and
- * we are limiting the task execution per call stack to exactly one, but scheduling/post-poning further
- * task processing on the next main loop iteration (also known as "next tick" in the Node/JS runtime lingo).
- */
- var TaskLoop = /*#__PURE__*/function () {
- function TaskLoop() {
- this._boundTick = void 0;
- this._tickTimer = null;
- this._tickInterval = null;
- this._tickCallCount = 0;
- this._boundTick = this.tick.bind(this);
- }
- var _proto = TaskLoop.prototype;
- _proto.destroy = function destroy() {
- this.onHandlerDestroying();
- this.onHandlerDestroyed();
- };
- _proto.onHandlerDestroying = function onHandlerDestroying() {
- // clear all timers before unregistering from event bus
- this.clearNextTick();
- this.clearInterval();
- };
- _proto.onHandlerDestroyed = function onHandlerDestroyed() {};
- _proto.hasInterval = function hasInterval() {
- return !!this._tickInterval;
- };
- _proto.hasNextTick = function hasNextTick() {
- return !!this._tickTimer;
- }
-
- /**
- * @param millis - Interval time (ms)
- * @eturns True when interval has been scheduled, false when already scheduled (no effect)
- */;
- _proto.setInterval = function setInterval(millis) {
- if (!this._tickInterval) {
- this._tickCallCount = 0;
- this._tickInterval = self.setInterval(this._boundTick, millis);
- return true;
- }
- return false;
- }
-
- /**
- * @returns True when interval was cleared, false when none was set (no effect)
- */;
- _proto.clearInterval = function clearInterval() {
- if (this._tickInterval) {
- self.clearInterval(this._tickInterval);
- this._tickInterval = null;
- return true;
- }
- return false;
- }
-
- /**
- * @returns True when timeout was cleared, false when none was set (no effect)
- */;
- _proto.clearNextTick = function clearNextTick() {
- if (this._tickTimer) {
- self.clearTimeout(this._tickTimer);
- this._tickTimer = null;
- return true;
- }
- return false;
- }
-
- /**
- * Will call the subclass doTick implementation in this main loop tick
- * or in the next one (via setTimeout(,0)) in case it has already been called
- * in this tick (in case this is a re-entrant call).
- */;
- _proto.tick = function tick() {
- this._tickCallCount++;
- if (this._tickCallCount === 1) {
- this.doTick();
- // re-entrant call to tick from previous doTick call stack
- // -> schedule a call on the next main loop iteration to process this task processing request
- if (this._tickCallCount > 1) {
- // make sure only one timer exists at any time at max
- this.tickImmediate();
- }
- this._tickCallCount = 0;
- }
- };
- _proto.tickImmediate = function tickImmediate() {
- this.clearNextTick();
- this._tickTimer = self.setTimeout(this._boundTick, 0);
- }
-
- /**
- * For subclass to implement task logic
- * @abstract
- */;
- _proto.doTick = function doTick() {};
- return TaskLoop;
- }();
-
- var FragmentState = {
- NOT_LOADED: "NOT_LOADED",
- APPENDING: "APPENDING",
- PARTIAL: "PARTIAL",
- OK: "OK"
- };
- var FragmentTracker = /*#__PURE__*/function () {
- function FragmentTracker(hls) {
- this.activePartLists = Object.create(null);
- this.endListFragments = Object.create(null);
- this.fragments = Object.create(null);
- this.timeRanges = Object.create(null);
- this.bufferPadding = 0.2;
- this.hls = void 0;
- this.hasGaps = false;
- this.hls = hls;
- this._registerListeners();
- }
- var _proto = FragmentTracker.prototype;
- _proto._registerListeners = function _registerListeners() {
- var hls = this.hls;
- hls.on(Events.BUFFER_APPENDED, this.onBufferAppended, this);
- hls.on(Events.FRAG_BUFFERED, this.onFragBuffered, this);
- hls.on(Events.FRAG_LOADED, this.onFragLoaded, this);
- };
- _proto._unregisterListeners = function _unregisterListeners() {
- var hls = this.hls;
- hls.off(Events.BUFFER_APPENDED, this.onBufferAppended, this);
- hls.off(Events.FRAG_BUFFERED, this.onFragBuffered, this);
- hls.off(Events.FRAG_LOADED, this.onFragLoaded, this);
- };
- _proto.destroy = function destroy() {
- this._unregisterListeners();
- // @ts-ignore
- this.fragments =
- // @ts-ignore
- this.activePartLists =
- // @ts-ignore
- this.endListFragments = this.timeRanges = null;
- }
-
- /**
- * Return a Fragment or Part with an appended range that matches the position and levelType
- * Otherwise, return null
- */;
- _proto.getAppendedFrag = function getAppendedFrag(position, levelType) {
- var activeParts = this.activePartLists[levelType];
- if (activeParts) {
- for (var i = activeParts.length; i--;) {
- var activePart = activeParts[i];
- if (!activePart) {
- break;
- }
- var appendedPTS = activePart.end;
- if (activePart.start <= position && appendedPTS !== null && position <= appendedPTS) {
- return activePart;
- }
- }
- }
- return this.getBufferedFrag(position, levelType);
- }
-
- /**
- * Return a buffered Fragment that matches the position and levelType.
- * A buffered Fragment is one whose loading, parsing and appending is done (completed or "partial" meaning aborted).
- * If not found any Fragment, return null
- */;
- _proto.getBufferedFrag = function getBufferedFrag(position, levelType) {
- var fragments = this.fragments;
- var keys = Object.keys(fragments);
- for (var i = keys.length; i--;) {
- var fragmentEntity = fragments[keys[i]];
- if ((fragmentEntity == null ? void 0 : fragmentEntity.body.type) === levelType && fragmentEntity.buffered) {
- var frag = fragmentEntity.body;
- if (frag.start <= position && position <= frag.end) {
- return frag;
- }
- }
- }
- return null;
- }
-
- /**
- * Partial fragments effected by coded frame eviction will be removed
- * The browser will unload parts of the buffer to free up memory for new buffer data
- * Fragments will need to be reloaded when the buffer is freed up, removing partial fragments will allow them to reload(since there might be parts that are still playable)
- */;
- _proto.detectEvictedFragments = function detectEvictedFragments(elementaryStream, timeRange, playlistType, appendedPart) {
- var _this = this;
- if (this.timeRanges) {
- this.timeRanges[elementaryStream] = timeRange;
- }
- // Check if any flagged fragments have been unloaded
- // excluding anything newer than appendedPartSn
- var appendedPartSn = (appendedPart == null ? void 0 : appendedPart.fragment.sn) || -1;
- Object.keys(this.fragments).forEach(function (key) {
- var fragmentEntity = _this.fragments[key];
- if (!fragmentEntity) {
- return;
- }
- if (appendedPartSn >= fragmentEntity.body.sn) {
- return;
- }
- if (!fragmentEntity.buffered && !fragmentEntity.loaded) {
- if (fragmentEntity.body.type === playlistType) {
- _this.removeFragment(fragmentEntity.body);
- }
- return;
- }
- var esData = fragmentEntity.range[elementaryStream];
- if (!esData) {
- return;
- }
- esData.time.some(function (time) {
- var isNotBuffered = !_this.isTimeBuffered(time.startPTS, time.endPTS, timeRange);
- if (isNotBuffered) {
- // Unregister partial fragment as it needs to load again to be reused
- _this.removeFragment(fragmentEntity.body);
- }
- return isNotBuffered;
- });
- });
- }
-
- /**
- * Checks if the fragment passed in is loaded in the buffer properly
- * Partially loaded fragments will be registered as a partial fragment
- */;
- _proto.detectPartialFragments = function detectPartialFragments(data) {
- var _this2 = this;
- var timeRanges = this.timeRanges;
- var frag = data.frag,
- part = data.part;
- if (!timeRanges || frag.sn === 'initSegment') {
- return;
- }
- var fragKey = getFragmentKey(frag);
- var fragmentEntity = this.fragments[fragKey];
- if (!fragmentEntity || fragmentEntity.buffered && frag.gap) {
- return;
- }
- var isFragHint = !frag.relurl;
- Object.keys(timeRanges).forEach(function (elementaryStream) {
- var streamInfo = frag.elementaryStreams[elementaryStream];
- if (!streamInfo) {
- return;
- }
- var timeRange = timeRanges[elementaryStream];
- var partial = isFragHint || streamInfo.partial === true;
- fragmentEntity.range[elementaryStream] = _this2.getBufferedTimes(frag, part, partial, timeRange);
- });
- fragmentEntity.loaded = null;
- if (Object.keys(fragmentEntity.range).length) {
- fragmentEntity.buffered = true;
- var endList = fragmentEntity.body.endList = frag.endList || fragmentEntity.body.endList;
- if (endList) {
- this.endListFragments[fragmentEntity.body.type] = fragmentEntity;
- }
- if (!isPartial(fragmentEntity)) {
- // Remove older fragment parts from lookup after frag is tracked as buffered
- this.removeParts(frag.sn - 1, frag.type);
- }
- } else {
- // remove fragment if nothing was appended
- this.removeFragment(fragmentEntity.body);
- }
- };
- _proto.removeParts = function removeParts(snToKeep, levelType) {
- var activeParts = this.activePartLists[levelType];
- if (!activeParts) {
- return;
- }
- this.activePartLists[levelType] = activeParts.filter(function (part) {
- return part.fragment.sn >= snToKeep;
- });
- };
- _proto.fragBuffered = function fragBuffered(frag, force) {
- var fragKey = getFragmentKey(frag);
- var fragmentEntity = this.fragments[fragKey];
- if (!fragmentEntity && force) {
- fragmentEntity = this.fragments[fragKey] = {
- body: frag,
- appendedPTS: null,
- loaded: null,
- buffered: false,
- range: Object.create(null)
- };
- if (frag.gap) {
- this.hasGaps = true;
- }
- }
- if (fragmentEntity) {
- fragmentEntity.loaded = null;
- fragmentEntity.buffered = true;
- }
- };
- _proto.getBufferedTimes = function getBufferedTimes(fragment, part, partial, timeRange) {
- var buffered = {
- time: [],
- partial: partial
- };
- var startPTS = fragment.start;
- var endPTS = fragment.end;
- var minEndPTS = fragment.minEndPTS || endPTS;
- var maxStartPTS = fragment.maxStartPTS || startPTS;
- for (var i = 0; i < timeRange.length; i++) {
- var startTime = timeRange.start(i) - this.bufferPadding;
- var endTime = timeRange.end(i) + this.bufferPadding;
- if (maxStartPTS >= startTime && minEndPTS <= endTime) {
- // Fragment is entirely contained in buffer
- // No need to check the other timeRange times since it's completely playable
- buffered.time.push({
- startPTS: Math.max(startPTS, timeRange.start(i)),
- endPTS: Math.min(endPTS, timeRange.end(i))
- });
- break;
- } else if (startPTS < endTime && endPTS > startTime) {
- var start = Math.max(startPTS, timeRange.start(i));
- var end = Math.min(endPTS, timeRange.end(i));
- if (end > start) {
- buffered.partial = true;
- // Check for intersection with buffer
- // Get playable sections of the fragment
- buffered.time.push({
- startPTS: start,
- endPTS: end
- });
- }
- } else if (endPTS <= startTime) {
- // No need to check the rest of the timeRange as it is in order
- break;
- }
- }
- return buffered;
- }
-
- /**
- * Gets the partial fragment for a certain time
- */;
- _proto.getPartialFragment = function getPartialFragment(time) {
- var bestFragment = null;
- var timePadding;
- var startTime;
- var endTime;
- var bestOverlap = 0;
- var bufferPadding = this.bufferPadding,
- fragments = this.fragments;
- Object.keys(fragments).forEach(function (key) {
- var fragmentEntity = fragments[key];
- if (!fragmentEntity) {
- return;
- }
- if (isPartial(fragmentEntity)) {
- startTime = fragmentEntity.body.start - bufferPadding;
- endTime = fragmentEntity.body.end + bufferPadding;
- if (time >= startTime && time <= endTime) {
- // Use the fragment that has the most padding from start and end time
- timePadding = Math.min(time - startTime, endTime - time);
- if (bestOverlap <= timePadding) {
- bestFragment = fragmentEntity.body;
- bestOverlap = timePadding;
- }
- }
- }
- });
- return bestFragment;
- };
- _proto.isEndListAppended = function isEndListAppended(type) {
- var lastFragmentEntity = this.endListFragments[type];
- return lastFragmentEntity !== undefined && (lastFragmentEntity.buffered || isPartial(lastFragmentEntity));
- };
- _proto.getState = function getState(fragment) {
- var fragKey = getFragmentKey(fragment);
- var fragmentEntity = this.fragments[fragKey];
- if (fragmentEntity) {
- if (!fragmentEntity.buffered) {
- return FragmentState.APPENDING;
- } else if (isPartial(fragmentEntity)) {
- return FragmentState.PARTIAL;
- } else {
- return FragmentState.OK;
- }
- }
- return FragmentState.NOT_LOADED;
- };
- _proto.isTimeBuffered = function isTimeBuffered(startPTS, endPTS, timeRange) {
- var startTime;
- var endTime;
- for (var i = 0; i < timeRange.length; i++) {
- startTime = timeRange.start(i) - this.bufferPadding;
- endTime = timeRange.end(i) + this.bufferPadding;
- if (startPTS >= startTime && endPTS <= endTime) {
- return true;
- }
- if (endPTS <= startTime) {
- // No need to check the rest of the timeRange as it is in order
- return false;
- }
- }
- return false;
- };
- _proto.onFragLoaded = function onFragLoaded(event, data) {
- var frag = data.frag,
- part = data.part;
- // don't track initsegment (for which sn is not a number)
- // don't track frags used for bitrateTest, they're irrelevant.
- if (frag.sn === 'initSegment' || frag.bitrateTest) {
- return;
- }
-
- // Fragment entity `loaded` FragLoadedData is null when loading parts
- var loaded = part ? null : data;
- var fragKey = getFragmentKey(frag);
- this.fragments[fragKey] = {
- body: frag,
- appendedPTS: null,
- loaded: loaded,
- buffered: false,
- range: Object.create(null)
- };
- };
- _proto.onBufferAppended = function onBufferAppended(event, data) {
- var _this3 = this;
- var frag = data.frag,
- part = data.part,
- timeRanges = data.timeRanges;
- if (frag.sn === 'initSegment') {
- return;
- }
- var playlistType = frag.type;
- if (part) {
- var activeParts = this.activePartLists[playlistType];
- if (!activeParts) {
- this.activePartLists[playlistType] = activeParts = [];
- }
- activeParts.push(part);
- }
- // Store the latest timeRanges loaded in the buffer
- this.timeRanges = timeRanges;
- Object.keys(timeRanges).forEach(function (elementaryStream) {
- var timeRange = timeRanges[elementaryStream];
- _this3.detectEvictedFragments(elementaryStream, timeRange, playlistType, part);
- });
- };
- _proto.onFragBuffered = function onFragBuffered(event, data) {
- this.detectPartialFragments(data);
- };
- _proto.hasFragment = function hasFragment(fragment) {
- var fragKey = getFragmentKey(fragment);
- return !!this.fragments[fragKey];
- };
- _proto.hasParts = function hasParts(type) {
- var _this$activePartLists;
- return !!((_this$activePartLists = this.activePartLists[type]) != null && _this$activePartLists.length);
- };
- _proto.removeFragmentsInRange = function removeFragmentsInRange(start, end, playlistType, withGapOnly, unbufferedOnly) {
- var _this4 = this;
- if (withGapOnly && !this.hasGaps) {
- return;
- }
- Object.keys(this.fragments).forEach(function (key) {
- var fragmentEntity = _this4.fragments[key];
- if (!fragmentEntity) {
- return;
- }
- var frag = fragmentEntity.body;
- if (frag.type !== playlistType || withGapOnly && !frag.gap) {
- return;
- }
- if (frag.start < end && frag.end > start && (fragmentEntity.buffered || unbufferedOnly)) {
- _this4.removeFragment(frag);
- }
- });
- };
- _proto.removeFragment = function removeFragment(fragment) {
- var fragKey = getFragmentKey(fragment);
- fragment.stats.loaded = 0;
- fragment.clearElementaryStreamInfo();
- var activeParts = this.activePartLists[fragment.type];
- if (activeParts) {
- var snToRemove = fragment.sn;
- this.activePartLists[fragment.type] = activeParts.filter(function (part) {
- return part.fragment.sn !== snToRemove;
- });
- }
- delete this.fragments[fragKey];
- if (fragment.endList) {
- delete this.endListFragments[fragment.type];
- }
- };
- _proto.removeAllFragments = function removeAllFragments() {
- this.fragments = Object.create(null);
- this.endListFragments = Object.create(null);
- this.activePartLists = Object.create(null);
- this.hasGaps = false;
- };
- return FragmentTracker;
- }();
- function isPartial(fragmentEntity) {
- var _fragmentEntity$range, _fragmentEntity$range2, _fragmentEntity$range3;
- return fragmentEntity.buffered && (fragmentEntity.body.gap || ((_fragmentEntity$range = fragmentEntity.range.video) == null ? void 0 : _fragmentEntity$range.partial) || ((_fragmentEntity$range2 = fragmentEntity.range.audio) == null ? void 0 : _fragmentEntity$range2.partial) || ((_fragmentEntity$range3 = fragmentEntity.range.audiovideo) == null ? void 0 : _fragmentEntity$range3.partial));
- }
- function getFragmentKey(fragment) {
- return fragment.type + "_" + fragment.level + "_" + fragment.sn;
- }
-
- /**
- * Provides methods dealing with buffer length retrieval for example.
- *
- * In general, a helper around HTML5 MediaElement TimeRanges gathered from `buffered` property.
- *
- * Also @see https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/buffered
- */
-
- var noopBuffered = {
- length: 0,
- start: function start() {
- return 0;
- },
- end: function end() {
- return 0;
- }
- };
- var BufferHelper = /*#__PURE__*/function () {
- function BufferHelper() {}
- /**
- * Return true if `media`'s buffered include `position`
- */
- BufferHelper.isBuffered = function isBuffered(media, position) {
- try {
- if (media) {
- var buffered = BufferHelper.getBuffered(media);
- for (var i = 0; i < buffered.length; i++) {
- if (position >= buffered.start(i) && position <= buffered.end(i)) {
- return true;
- }
- }
- }
- } catch (error) {
- // this is to catch
- // InvalidStateError: Failed to read the 'buffered' property from 'SourceBuffer':
- // This SourceBuffer has been removed from the parent media source
- }
- return false;
- };
- BufferHelper.bufferInfo = function bufferInfo(media, pos, maxHoleDuration) {
- try {
- if (media) {
- var vbuffered = BufferHelper.getBuffered(media);
- var buffered = [];
- var i;
- for (i = 0; i < vbuffered.length; i++) {
- buffered.push({
- start: vbuffered.start(i),
- end: vbuffered.end(i)
- });
- }
- return this.bufferedInfo(buffered, pos, maxHoleDuration);
- }
- } catch (error) {
- // this is to catch
- // InvalidStateError: Failed to read the 'buffered' property from 'SourceBuffer':
- // This SourceBuffer has been removed from the parent media source
- }
- return {
- len: 0,
- start: pos,
- end: pos,
- nextStart: undefined
- };
- };
- BufferHelper.bufferedInfo = function bufferedInfo(buffered, pos, maxHoleDuration) {
- pos = Math.max(0, pos);
- // sort on buffer.start/smaller end (IE does not always return sorted buffered range)
- buffered.sort(function (a, b) {
- var diff = a.start - b.start;
- if (diff) {
- return diff;
- } else {
- return b.end - a.end;
- }
- });
- var buffered2 = [];
- if (maxHoleDuration) {
- // there might be some small holes between buffer time range
- // consider that holes smaller than maxHoleDuration are irrelevant and build another
- // buffer time range representations that discards those holes
- for (var i = 0; i < buffered.length; i++) {
- var buf2len = buffered2.length;
- if (buf2len) {
- var buf2end = buffered2[buf2len - 1].end;
- // if small hole (value between 0 or maxHoleDuration ) or overlapping (negative)
- if (buffered[i].start - buf2end < maxHoleDuration) {
- // merge overlapping time ranges
- // update lastRange.end only if smaller than item.end
- // e.g. [ 1, 15] with [ 2,8] => [ 1,15] (no need to modify lastRange.end)
- // whereas [ 1, 8] with [ 2,15] => [ 1,15] ( lastRange should switch from [1,8] to [1,15])
- if (buffered[i].end > buf2end) {
- buffered2[buf2len - 1].end = buffered[i].end;
- }
- } else {
- // big hole
- buffered2.push(buffered[i]);
- }
- } else {
- // first value
- buffered2.push(buffered[i]);
- }
- }
- } else {
- buffered2 = buffered;
- }
- var bufferLen = 0;
-
- // bufferStartNext can possibly be undefined based on the conditional logic below
- var bufferStartNext;
-
- // bufferStart and bufferEnd are buffer boundaries around current video position
- var bufferStart = pos;
- var bufferEnd = pos;
- for (var _i = 0; _i < buffered2.length; _i++) {
- var start = buffered2[_i].start;
- var end = buffered2[_i].end;
- // logger.log('buf start/end:' + buffered.start(i) + '/' + buffered.end(i));
- if (pos + maxHoleDuration >= start && pos < end) {
- // play position is inside this buffer TimeRange, retrieve end of buffer position and buffer length
- bufferStart = start;
- bufferEnd = end;
- bufferLen = bufferEnd - pos;
- } else if (pos + maxHoleDuration < start) {
- bufferStartNext = start;
- break;
- }
- }
- return {
- len: bufferLen,
- start: bufferStart || 0,
- end: bufferEnd || 0,
- nextStart: bufferStartNext
- };
- }
-
- /**
- * Safe method to get buffered property.
- * SourceBuffer.buffered may throw if SourceBuffer is removed from it's MediaSource
- */;
- BufferHelper.getBuffered = function getBuffered(media) {
- try {
- return media.buffered;
- } catch (e) {
- logger.log('failed to get media.buffered', e);
- return noopBuffered;
- }
- };
- return BufferHelper;
- }();
-
- var ChunkMetadata = function ChunkMetadata(level, sn, id, size, part, partial) {
- if (size === void 0) {
- size = 0;
- }
- if (part === void 0) {
- part = -1;
- }
- if (partial === void 0) {
- partial = false;
- }
- this.level = void 0;
- this.sn = void 0;
- this.part = void 0;
- this.id = void 0;
- this.size = void 0;
- this.partial = void 0;
- this.transmuxing = getNewPerformanceTiming();
- this.buffering = {
- audio: getNewPerformanceTiming(),
- video: getNewPerformanceTiming(),
- audiovideo: getNewPerformanceTiming()
- };
- this.level = level;
- this.sn = sn;
- this.id = id;
- this.size = size;
- this.part = part;
- this.partial = partial;
- };
- function getNewPerformanceTiming() {
- return {
- start: 0,
- executeStart: 0,
- executeEnd: 0,
- end: 0
- };
- }
-
- function findFirstFragWithCC(fragments, cc) {
- for (var i = 0, len = fragments.length; i < len; i++) {
- var _fragments$i;
- if (((_fragments$i = fragments[i]) == null ? void 0 : _fragments$i.cc) === cc) {
- return fragments[i];
- }
- }
- return null;
- }
- function shouldAlignOnDiscontinuities(lastFrag, switchDetails, details) {
- if (switchDetails) {
- if (details.endCC > details.startCC || lastFrag && lastFrag.cc < details.startCC) {
- return true;
- }
- }
- return false;
- }
-
- // Find the first frag in the previous level which matches the CC of the first frag of the new level
- function findDiscontinuousReferenceFrag(prevDetails, curDetails) {
- var prevFrags = prevDetails.fragments;
- var curFrags = curDetails.fragments;
- if (!curFrags.length || !prevFrags.length) {
- logger.log('No fragments to align');
- return;
- }
- var prevStartFrag = findFirstFragWithCC(prevFrags, curFrags[0].cc);
- if (!prevStartFrag || prevStartFrag && !prevStartFrag.startPTS) {
- logger.log('No frag in previous level to align on');
- return;
- }
- return prevStartFrag;
- }
- function adjustFragmentStart(frag, sliding) {
- if (frag) {
- var start = frag.start + sliding;
- frag.start = frag.startPTS = start;
- frag.endPTS = start + frag.duration;
- }
- }
- function adjustSlidingStart(sliding, details) {
- // Update segments
- var fragments = details.fragments;
- for (var i = 0, len = fragments.length; i < len; i++) {
- adjustFragmentStart(fragments[i], sliding);
- }
- // Update LL-HLS parts at the end of the playlist
- if (details.fragmentHint) {
- adjustFragmentStart(details.fragmentHint, sliding);
- }
- details.alignedSliding = true;
- }
-
- /**
- * Using the parameters of the last level, this function computes PTS' of the new fragments so that they form a
- * contiguous stream with the last fragments.
- * The PTS of a fragment lets Hls.js know where it fits into a stream - by knowing every PTS, we know which fragment to
- * download at any given time. PTS is normally computed when the fragment is demuxed, so taking this step saves us time
- * and an extra download.
- * @param lastFrag
- * @param lastLevel
- * @param details
- */
- function alignStream(lastFrag, switchDetails, details) {
- if (!switchDetails) {
- return;
- }
- alignDiscontinuities(lastFrag, details, switchDetails);
- if (!details.alignedSliding && switchDetails) {
- // If the PTS wasn't figured out via discontinuity sequence that means there was no CC increase within the level.
- // Aligning via Program Date Time should therefore be reliable, since PDT should be the same within the same
- // discontinuity sequence.
- alignMediaPlaylistByPDT(details, switchDetails);
- }
- if (!details.alignedSliding && switchDetails && !details.skippedSegments) {
- // Try to align on sn so that we pick a better start fragment.
- // Do not perform this on playlists with delta updates as this is only to align levels on switch
- // and adjustSliding only adjusts fragments after skippedSegments.
- adjustSliding(switchDetails, details);
- }
- }
-
- /**
- * Computes the PTS if a new level's fragments using the PTS of a fragment in the last level which shares the same
- * discontinuity sequence.
- * @param lastFrag - The last Fragment which shares the same discontinuity sequence
- * @param lastLevel - The details of the last loaded level
- * @param details - The details of the new level
- */
- function alignDiscontinuities(lastFrag, details, switchDetails) {
- if (shouldAlignOnDiscontinuities(lastFrag, switchDetails, details)) {
- var referenceFrag = findDiscontinuousReferenceFrag(switchDetails, details);
- if (referenceFrag && isFiniteNumber(referenceFrag.start)) {
- logger.log("Adjusting PTS using last level due to CC increase within current level " + details.url);
- adjustSlidingStart(referenceFrag.start, details);
- }
- }
- }
-
- /**
- * Ensures appropriate time-alignment between renditions based on PDT.
- * This function assumes the timelines represented in `refDetails` are accurate, including the PDTs
- * for the last discontinuity sequence number shared by both playlists when present,
- * and uses the "wallclock"/PDT timeline as a cross-reference to `details`, adjusting the presentation
- * times/timelines of `details` accordingly.
- * Given the asynchronous nature of fetches and initial loads of live `main` and audio/subtitle tracks,
- * the primary purpose of this function is to ensure the "local timelines" of audio/subtitle tracks
- * are aligned to the main/video timeline, using PDT as the cross-reference/"anchor" that should
- * be consistent across playlists, per the HLS spec.
- * @param details - The details of the rendition you'd like to time-align (e.g. an audio rendition).
- * @param refDetails - The details of the reference rendition with start and PDT times for alignment.
- */
- function alignMediaPlaylistByPDT(details, refDetails) {
- if (!details.hasProgramDateTime || !refDetails.hasProgramDateTime) {
- return;
- }
- var fragments = details.fragments;
- var refFragments = refDetails.fragments;
- if (!fragments.length || !refFragments.length) {
- return;
- }
-
- // Calculate a delta to apply to all fragments according to the delta in PDT times and start times
- // of a fragment in the reference details, and a fragment in the target details of the same discontinuity.
- // If a fragment of the same discontinuity was not found use the middle fragment of both.
- var refFrag;
- var frag;
- var targetCC = Math.min(refDetails.endCC, details.endCC);
- if (refDetails.startCC < targetCC && details.startCC < targetCC) {
- refFrag = findFirstFragWithCC(refFragments, targetCC);
- frag = findFirstFragWithCC(fragments, targetCC);
- }
- if (!refFrag || !frag) {
- refFrag = refFragments[Math.floor(refFragments.length / 2)];
- frag = findFirstFragWithCC(fragments, refFrag.cc) || fragments[Math.floor(fragments.length / 2)];
- }
- var refPDT = refFrag.programDateTime;
- var targetPDT = frag.programDateTime;
- if (!refPDT || !targetPDT) {
- return;
- }
- var delta = (targetPDT - refPDT) / 1000 - (frag.start - refFrag.start);
- adjustSlidingStart(delta, details);
- }
-
- var MIN_CHUNK_SIZE = Math.pow(2, 17); // 128kb
- var FragmentLoader = /*#__PURE__*/function () {
- function FragmentLoader(config) {
- this.config = void 0;
- this.loader = null;
- this.partLoadTimeout = -1;
- this.config = config;
- }
- var _proto = FragmentLoader.prototype;
- _proto.destroy = function destroy() {
- if (this.loader) {
- this.loader.destroy();
- this.loader = null;
- }
- };
- _proto.abort = function abort() {
- if (this.loader) {
- // Abort the loader for current fragment. Only one may load at any given time
- this.loader.abort();
- }
- };
- _proto.load = function load(frag, _onProgress) {
- var _this = this;
- var url = frag.url;
- if (!url) {
- return Promise.reject(new LoadError({
- type: ErrorTypes.NETWORK_ERROR,
- details: ErrorDetails.FRAG_LOAD_ERROR,
- fatal: false,
- frag: frag,
- error: new Error("Fragment does not have a " + (url ? 'part list' : 'url')),
- networkDetails: null
- }));
- }
- this.abort();
- var config = this.config;
- var FragmentILoader = config.fLoader;
- var DefaultILoader = config.loader;
- return new Promise(function (resolve, reject) {
- if (_this.loader) {
- _this.loader.destroy();
- }
- if (frag.gap) {
- if (frag.tagList.some(function (tags) {
- return tags[0] === 'GAP';
- })) {
- reject(createGapLoadError(frag));
- return;
- } else {
- // Reset temporary treatment as GAP tag
- frag.gap = false;
- }
- }
- var loader = _this.loader = frag.loader = FragmentILoader ? new FragmentILoader(config) : new DefaultILoader(config);
- var loaderContext = createLoaderContext(frag);
- var loadPolicy = getLoaderConfigWithoutReties(config.fragLoadPolicy.default);
- var loaderConfig = {
- loadPolicy: loadPolicy,
- timeout: loadPolicy.maxLoadTimeMs,
- maxRetry: 0,
- retryDelay: 0,
- maxRetryDelay: 0,
- highWaterMark: frag.sn === 'initSegment' ? Infinity : MIN_CHUNK_SIZE
- };
- // Assign frag stats to the loader's stats reference
- frag.stats = loader.stats;
- loader.load(loaderContext, loaderConfig, {
- onSuccess: function onSuccess(response, stats, context, networkDetails) {
- _this.resetLoader(frag, loader);
- var payload = response.data;
- if (context.resetIV && frag.decryptdata) {
- frag.decryptdata.iv = new Uint8Array(payload.slice(0, 16));
- payload = payload.slice(16);
- }
- resolve({
- frag: frag,
- part: null,
- payload: payload,
- networkDetails: networkDetails
- });
- },
- onError: function onError(response, context, networkDetails, stats) {
- _this.resetLoader(frag, loader);
- reject(new LoadError({
- type: ErrorTypes.NETWORK_ERROR,
- details: ErrorDetails.FRAG_LOAD_ERROR,
- fatal: false,
- frag: frag,
- response: _objectSpread2({
- url: url,
- data: undefined
- }, response),
- error: new Error("HTTP Error " + response.code + " " + response.text),
- networkDetails: networkDetails,
- stats: stats
- }));
- },
- onAbort: function onAbort(stats, context, networkDetails) {
- _this.resetLoader(frag, loader);
- reject(new LoadError({
- type: ErrorTypes.NETWORK_ERROR,
- details: ErrorDetails.INTERNAL_ABORTED,
- fatal: false,
- frag: frag,
- error: new Error('Aborted'),
- networkDetails: networkDetails,
- stats: stats
- }));
- },
- onTimeout: function onTimeout(stats, context, networkDetails) {
- _this.resetLoader(frag, loader);
- reject(new LoadError({
- type: ErrorTypes.NETWORK_ERROR,
- details: ErrorDetails.FRAG_LOAD_TIMEOUT,
- fatal: false,
- frag: frag,
- error: new Error("Timeout after " + loaderConfig.timeout + "ms"),
- networkDetails: networkDetails,
- stats: stats
- }));
- },
- onProgress: function onProgress(stats, context, data, networkDetails) {
- if (_onProgress) {
- _onProgress({
- frag: frag,
- part: null,
- payload: data,
- networkDetails: networkDetails
- });
- }
- }
- });
- });
- };
- _proto.loadPart = function loadPart(frag, part, onProgress) {
- var _this2 = this;
- this.abort();
- var config = this.config;
- var FragmentILoader = config.fLoader;
- var DefaultILoader = config.loader;
- return new Promise(function (resolve, reject) {
- if (_this2.loader) {
- _this2.loader.destroy();
- }
- if (frag.gap || part.gap) {
- reject(createGapLoadError(frag, part));
- return;
- }
- var loader = _this2.loader = frag.loader = FragmentILoader ? new FragmentILoader(config) : new DefaultILoader(config);
- var loaderContext = createLoaderContext(frag, part);
- // Should we define another load policy for parts?
- var loadPolicy = getLoaderConfigWithoutReties(config.fragLoadPolicy.default);
- var loaderConfig = {
- loadPolicy: loadPolicy,
- timeout: loadPolicy.maxLoadTimeMs,
- maxRetry: 0,
- retryDelay: 0,
- maxRetryDelay: 0,
- highWaterMark: MIN_CHUNK_SIZE
- };
- // Assign part stats to the loader's stats reference
- part.stats = loader.stats;
- loader.load(loaderContext, loaderConfig, {
- onSuccess: function onSuccess(response, stats, context, networkDetails) {
- _this2.resetLoader(frag, loader);
- _this2.updateStatsFromPart(frag, part);
- var partLoadedData = {
- frag: frag,
- part: part,
- payload: response.data,
- networkDetails: networkDetails
- };
- onProgress(partLoadedData);
- resolve(partLoadedData);
- },
- onError: function onError(response, context, networkDetails, stats) {
- _this2.resetLoader(frag, loader);
- reject(new LoadError({
- type: ErrorTypes.NETWORK_ERROR,
- details: ErrorDetails.FRAG_LOAD_ERROR,
- fatal: false,
- frag: frag,
- part: part,
- response: _objectSpread2({
- url: loaderContext.url,
- data: undefined
- }, response),
- error: new Error("HTTP Error " + response.code + " " + response.text),
- networkDetails: networkDetails,
- stats: stats
- }));
- },
- onAbort: function onAbort(stats, context, networkDetails) {
- frag.stats.aborted = part.stats.aborted;
- _this2.resetLoader(frag, loader);
- reject(new LoadError({
- type: ErrorTypes.NETWORK_ERROR,
- details: ErrorDetails.INTERNAL_ABORTED,
- fatal: false,
- frag: frag,
- part: part,
- error: new Error('Aborted'),
- networkDetails: networkDetails,
- stats: stats
- }));
- },
- onTimeout: function onTimeout(stats, context, networkDetails) {
- _this2.resetLoader(frag, loader);
- reject(new LoadError({
- type: ErrorTypes.NETWORK_ERROR,
- details: ErrorDetails.FRAG_LOAD_TIMEOUT,
- fatal: false,
- frag: frag,
- part: part,
- error: new Error("Timeout after " + loaderConfig.timeout + "ms"),
- networkDetails: networkDetails,
- stats: stats
- }));
- }
- });
- });
- };
- _proto.updateStatsFromPart = function updateStatsFromPart(frag, part) {
- var fragStats = frag.stats;
- var partStats = part.stats;
- var partTotal = partStats.total;
- fragStats.loaded += partStats.loaded;
- if (partTotal) {
- var estTotalParts = Math.round(frag.duration / part.duration);
- var estLoadedParts = Math.min(Math.round(fragStats.loaded / partTotal), estTotalParts);
- var estRemainingParts = estTotalParts - estLoadedParts;
- var estRemainingBytes = estRemainingParts * Math.round(fragStats.loaded / estLoadedParts);
- fragStats.total = fragStats.loaded + estRemainingBytes;
- } else {
- fragStats.total = Math.max(fragStats.loaded, fragStats.total);
- }
- var fragLoading = fragStats.loading;
- var partLoading = partStats.loading;
- if (fragLoading.start) {
- // add to fragment loader latency
- fragLoading.first += partLoading.first - partLoading.start;
- } else {
- fragLoading.start = partLoading.start;
- fragLoading.first = partLoading.first;
- }
- fragLoading.end = partLoading.end;
- };
- _proto.resetLoader = function resetLoader(frag, loader) {
- frag.loader = null;
- if (this.loader === loader) {
- self.clearTimeout(this.partLoadTimeout);
- this.loader = null;
- }
- loader.destroy();
- };
- return FragmentLoader;
- }();
- function createLoaderContext(frag, part) {
- if (part === void 0) {
- part = null;
- }
- var segment = part || frag;
- var loaderContext = {
- frag: frag,
- part: part,
- responseType: 'arraybuffer',
- url: segment.url,
- headers: {},
- rangeStart: 0,
- rangeEnd: 0
- };
- var start = segment.byteRangeStartOffset;
- var end = segment.byteRangeEndOffset;
- if (isFiniteNumber(start) && isFiniteNumber(end)) {
- var _frag$decryptdata;
- var byteRangeStart = start;
- var byteRangeEnd = end;
- if (frag.sn === 'initSegment' && ((_frag$decryptdata = frag.decryptdata) == null ? void 0 : _frag$decryptdata.method) === 'AES-128') {
- // MAP segment encrypted with method 'AES-128', when served with HTTP Range,
- // has the unencrypted size specified in the range.
- // Ref: https://tools.ietf.org/html/draft-pantos-hls-rfc8216bis-08#section-6.3.6
- var fragmentLen = end - start;
- if (fragmentLen % 16) {
- byteRangeEnd = end + (16 - fragmentLen % 16);
- }
- if (start !== 0) {
- loaderContext.resetIV = true;
- byteRangeStart = start - 16;
- }
- }
- loaderContext.rangeStart = byteRangeStart;
- loaderContext.rangeEnd = byteRangeEnd;
- }
- return loaderContext;
- }
- function createGapLoadError(frag, part) {
- var error = new Error("GAP " + (frag.gap ? 'tag' : 'attribute') + " found");
- var errorData = {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.FRAG_GAP,
- fatal: false,
- frag: frag,
- error: error,
- networkDetails: null
- };
- if (part) {
- errorData.part = part;
- }
- (part ? part : frag).stats.aborted = true;
- return new LoadError(errorData);
- }
- var LoadError = /*#__PURE__*/function (_Error) {
- _inheritsLoose(LoadError, _Error);
- function LoadError(data) {
- var _this3;
- _this3 = _Error.call(this, data.error.message) || this;
- _this3.data = void 0;
- _this3.data = data;
- return _this3;
- }
- return LoadError;
- }( /*#__PURE__*/_wrapNativeSuper(Error));
-
- var AESCrypto = /*#__PURE__*/function () {
- function AESCrypto(subtle, iv) {
- this.subtle = void 0;
- this.aesIV = void 0;
- this.subtle = subtle;
- this.aesIV = iv;
- }
- var _proto = AESCrypto.prototype;
- _proto.decrypt = function decrypt(data, key) {
- return this.subtle.decrypt({
- name: 'AES-CBC',
- iv: this.aesIV
- }, key, data);
- };
- return AESCrypto;
- }();
-
- var FastAESKey = /*#__PURE__*/function () {
- function FastAESKey(subtle, key) {
- this.subtle = void 0;
- this.key = void 0;
- this.subtle = subtle;
- this.key = key;
- }
- var _proto = FastAESKey.prototype;
- _proto.expandKey = function expandKey() {
- return this.subtle.importKey('raw', this.key, {
- name: 'AES-CBC'
- }, false, ['encrypt', 'decrypt']);
- };
- return FastAESKey;
- }();
-
- // PKCS7
- function removePadding(array) {
- var outputBytes = array.byteLength;
- var paddingBytes = outputBytes && new DataView(array.buffer).getUint8(outputBytes - 1);
- if (paddingBytes) {
- return sliceUint8(array, 0, outputBytes - paddingBytes);
- }
- return array;
- }
- var AESDecryptor = /*#__PURE__*/function () {
- function AESDecryptor() {
- this.rcon = [0x0, 0x1, 0x2, 0x4, 0x8, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36];
- this.subMix = [new Uint32Array(256), new Uint32Array(256), new Uint32Array(256), new Uint32Array(256)];
- this.invSubMix = [new Uint32Array(256), new Uint32Array(256), new Uint32Array(256), new Uint32Array(256)];
- this.sBox = new Uint32Array(256);
- this.invSBox = new Uint32Array(256);
- this.key = new Uint32Array(0);
- this.ksRows = 0;
- this.keySize = 0;
- this.keySchedule = void 0;
- this.invKeySchedule = void 0;
- this.initTable();
- }
-
- // Using view.getUint32() also swaps the byte order.
- var _proto = AESDecryptor.prototype;
- _proto.uint8ArrayToUint32Array_ = function uint8ArrayToUint32Array_(arrayBuffer) {
- var view = new DataView(arrayBuffer);
- var newArray = new Uint32Array(4);
- for (var i = 0; i < 4; i++) {
- newArray[i] = view.getUint32(i * 4);
- }
- return newArray;
- };
- _proto.initTable = function initTable() {
- var sBox = this.sBox;
- var invSBox = this.invSBox;
- var subMix = this.subMix;
- var subMix0 = subMix[0];
- var subMix1 = subMix[1];
- var subMix2 = subMix[2];
- var subMix3 = subMix[3];
- var invSubMix = this.invSubMix;
- var invSubMix0 = invSubMix[0];
- var invSubMix1 = invSubMix[1];
- var invSubMix2 = invSubMix[2];
- var invSubMix3 = invSubMix[3];
- var d = new Uint32Array(256);
- var x = 0;
- var xi = 0;
- var i = 0;
- for (i = 0; i < 256; i++) {
- if (i < 128) {
- d[i] = i << 1;
- } else {
- d[i] = i << 1 ^ 0x11b;
- }
- }
- for (i = 0; i < 256; i++) {
- var sx = xi ^ xi << 1 ^ xi << 2 ^ xi << 3 ^ xi << 4;
- sx = sx >>> 8 ^ sx & 0xff ^ 0x63;
- sBox[x] = sx;
- invSBox[sx] = x;
-
- // Compute multiplication
- var x2 = d[x];
- var x4 = d[x2];
- var x8 = d[x4];
-
- // Compute sub/invSub bytes, mix columns tables
- var t = d[sx] * 0x101 ^ sx * 0x1010100;
- subMix0[x] = t << 24 | t >>> 8;
- subMix1[x] = t << 16 | t >>> 16;
- subMix2[x] = t << 8 | t >>> 24;
- subMix3[x] = t;
-
- // Compute inv sub bytes, inv mix columns tables
- t = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;
- invSubMix0[sx] = t << 24 | t >>> 8;
- invSubMix1[sx] = t << 16 | t >>> 16;
- invSubMix2[sx] = t << 8 | t >>> 24;
- invSubMix3[sx] = t;
-
- // Compute next counter
- if (!x) {
- x = xi = 1;
- } else {
- x = x2 ^ d[d[d[x8 ^ x2]]];
- xi ^= d[d[xi]];
- }
- }
- };
- _proto.expandKey = function expandKey(keyBuffer) {
- // convert keyBuffer to Uint32Array
- var key = this.uint8ArrayToUint32Array_(keyBuffer);
- var sameKey = true;
- var offset = 0;
- while (offset < key.length && sameKey) {
- sameKey = key[offset] === this.key[offset];
- offset++;
- }
- if (sameKey) {
- return;
- }
- this.key = key;
- var keySize = this.keySize = key.length;
- if (keySize !== 4 && keySize !== 6 && keySize !== 8) {
- throw new Error('Invalid aes key size=' + keySize);
- }
- var ksRows = this.ksRows = (keySize + 6 + 1) * 4;
- var ksRow;
- var invKsRow;
- var keySchedule = this.keySchedule = new Uint32Array(ksRows);
- var invKeySchedule = this.invKeySchedule = new Uint32Array(ksRows);
- var sbox = this.sBox;
- var rcon = this.rcon;
- var invSubMix = this.invSubMix;
- var invSubMix0 = invSubMix[0];
- var invSubMix1 = invSubMix[1];
- var invSubMix2 = invSubMix[2];
- var invSubMix3 = invSubMix[3];
- var prev;
- var t;
- for (ksRow = 0; ksRow < ksRows; ksRow++) {
- if (ksRow < keySize) {
- prev = keySchedule[ksRow] = key[ksRow];
- continue;
- }
- t = prev;
- if (ksRow % keySize === 0) {
- // Rot word
- t = t << 8 | t >>> 24;
-
- // Sub word
- t = sbox[t >>> 24] << 24 | sbox[t >>> 16 & 0xff] << 16 | sbox[t >>> 8 & 0xff] << 8 | sbox[t & 0xff];
-
- // Mix Rcon
- t ^= rcon[ksRow / keySize | 0] << 24;
- } else if (keySize > 6 && ksRow % keySize === 4) {
- // Sub word
- t = sbox[t >>> 24] << 24 | sbox[t >>> 16 & 0xff] << 16 | sbox[t >>> 8 & 0xff] << 8 | sbox[t & 0xff];
- }
- keySchedule[ksRow] = prev = (keySchedule[ksRow - keySize] ^ t) >>> 0;
- }
- for (invKsRow = 0; invKsRow < ksRows; invKsRow++) {
- ksRow = ksRows - invKsRow;
- if (invKsRow & 3) {
- t = keySchedule[ksRow];
- } else {
- t = keySchedule[ksRow - 4];
- }
- if (invKsRow < 4 || ksRow <= 4) {
- invKeySchedule[invKsRow] = t;
- } else {
- invKeySchedule[invKsRow] = invSubMix0[sbox[t >>> 24]] ^ invSubMix1[sbox[t >>> 16 & 0xff]] ^ invSubMix2[sbox[t >>> 8 & 0xff]] ^ invSubMix3[sbox[t & 0xff]];
- }
- invKeySchedule[invKsRow] = invKeySchedule[invKsRow] >>> 0;
- }
- }
-
- // Adding this as a method greatly improves performance.
- ;
- _proto.networkToHostOrderSwap = function networkToHostOrderSwap(word) {
- return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24;
- };
- _proto.decrypt = function decrypt(inputArrayBuffer, offset, aesIV) {
- var nRounds = this.keySize + 6;
- var invKeySchedule = this.invKeySchedule;
- var invSBOX = this.invSBox;
- var invSubMix = this.invSubMix;
- var invSubMix0 = invSubMix[0];
- var invSubMix1 = invSubMix[1];
- var invSubMix2 = invSubMix[2];
- var invSubMix3 = invSubMix[3];
- var initVector = this.uint8ArrayToUint32Array_(aesIV);
- var initVector0 = initVector[0];
- var initVector1 = initVector[1];
- var initVector2 = initVector[2];
- var initVector3 = initVector[3];
- var inputInt32 = new Int32Array(inputArrayBuffer);
- var outputInt32 = new Int32Array(inputInt32.length);
- var t0, t1, t2, t3;
- var s0, s1, s2, s3;
- var inputWords0, inputWords1, inputWords2, inputWords3;
- var ksRow, i;
- var swapWord = this.networkToHostOrderSwap;
- while (offset < inputInt32.length) {
- inputWords0 = swapWord(inputInt32[offset]);
- inputWords1 = swapWord(inputInt32[offset + 1]);
- inputWords2 = swapWord(inputInt32[offset + 2]);
- inputWords3 = swapWord(inputInt32[offset + 3]);
- s0 = inputWords0 ^ invKeySchedule[0];
- s1 = inputWords3 ^ invKeySchedule[1];
- s2 = inputWords2 ^ invKeySchedule[2];
- s3 = inputWords1 ^ invKeySchedule[3];
- ksRow = 4;
-
- // Iterate through the rounds of decryption
- for (i = 1; i < nRounds; i++) {
- t0 = invSubMix0[s0 >>> 24] ^ invSubMix1[s1 >> 16 & 0xff] ^ invSubMix2[s2 >> 8 & 0xff] ^ invSubMix3[s3 & 0xff] ^ invKeySchedule[ksRow];
- t1 = invSubMix0[s1 >>> 24] ^ invSubMix1[s2 >> 16 & 0xff] ^ invSubMix2[s3 >> 8 & 0xff] ^ invSubMix3[s0 & 0xff] ^ invKeySchedule[ksRow + 1];
- t2 = invSubMix0[s2 >>> 24] ^ invSubMix1[s3 >> 16 & 0xff] ^ invSubMix2[s0 >> 8 & 0xff] ^ invSubMix3[s1 & 0xff] ^ invKeySchedule[ksRow + 2];
- t3 = invSubMix0[s3 >>> 24] ^ invSubMix1[s0 >> 16 & 0xff] ^ invSubMix2[s1 >> 8 & 0xff] ^ invSubMix3[s2 & 0xff] ^ invKeySchedule[ksRow + 3];
- // Update state
- s0 = t0;
- s1 = t1;
- s2 = t2;
- s3 = t3;
- ksRow = ksRow + 4;
- }
-
- // Shift rows, sub bytes, add round key
- t0 = invSBOX[s0 >>> 24] << 24 ^ invSBOX[s1 >> 16 & 0xff] << 16 ^ invSBOX[s2 >> 8 & 0xff] << 8 ^ invSBOX[s3 & 0xff] ^ invKeySchedule[ksRow];
- t1 = invSBOX[s1 >>> 24] << 24 ^ invSBOX[s2 >> 16 & 0xff] << 16 ^ invSBOX[s3 >> 8 & 0xff] << 8 ^ invSBOX[s0 & 0xff] ^ invKeySchedule[ksRow + 1];
- t2 = invSBOX[s2 >>> 24] << 24 ^ invSBOX[s3 >> 16 & 0xff] << 16 ^ invSBOX[s0 >> 8 & 0xff] << 8 ^ invSBOX[s1 & 0xff] ^ invKeySchedule[ksRow + 2];
- t3 = invSBOX[s3 >>> 24] << 24 ^ invSBOX[s0 >> 16 & 0xff] << 16 ^ invSBOX[s1 >> 8 & 0xff] << 8 ^ invSBOX[s2 & 0xff] ^ invKeySchedule[ksRow + 3];
-
- // Write
- outputInt32[offset] = swapWord(t0 ^ initVector0);
- outputInt32[offset + 1] = swapWord(t3 ^ initVector1);
- outputInt32[offset + 2] = swapWord(t2 ^ initVector2);
- outputInt32[offset + 3] = swapWord(t1 ^ initVector3);
-
- // reset initVector to last 4 unsigned int
- initVector0 = inputWords0;
- initVector1 = inputWords1;
- initVector2 = inputWords2;
- initVector3 = inputWords3;
- offset = offset + 4;
- }
- return outputInt32.buffer;
- };
- return AESDecryptor;
- }();
-
- var CHUNK_SIZE = 16; // 16 bytes, 128 bits
- var Decrypter = /*#__PURE__*/function () {
- function Decrypter(config, _temp) {
- var _ref = _temp === void 0 ? {} : _temp,
- _ref$removePKCS7Paddi = _ref.removePKCS7Padding,
- removePKCS7Padding = _ref$removePKCS7Paddi === void 0 ? true : _ref$removePKCS7Paddi;
- this.logEnabled = true;
- this.removePKCS7Padding = void 0;
- this.subtle = null;
- this.softwareDecrypter = null;
- this.key = null;
- this.fastAesKey = null;
- this.remainderData = null;
- this.currentIV = null;
- this.currentResult = null;
- this.useSoftware = void 0;
- this.useSoftware = config.enableSoftwareAES;
- this.removePKCS7Padding = removePKCS7Padding;
- // built in decryptor expects PKCS7 padding
- if (removePKCS7Padding) {
- try {
- var browserCrypto = self.crypto;
- if (browserCrypto) {
- this.subtle = browserCrypto.subtle || browserCrypto.webkitSubtle;
- }
- } catch (e) {
- /* no-op */
- }
- }
- this.useSoftware = !this.subtle;
- }
- var _proto = Decrypter.prototype;
- _proto.destroy = function destroy() {
- this.subtle = null;
- this.softwareDecrypter = null;
- this.key = null;
- this.fastAesKey = null;
- this.remainderData = null;
- this.currentIV = null;
- this.currentResult = null;
- };
- _proto.isSync = function isSync() {
- return this.useSoftware;
- };
- _proto.flush = function flush() {
- var currentResult = this.currentResult,
- remainderData = this.remainderData;
- if (!currentResult || remainderData) {
- this.reset();
- return null;
- }
- var data = new Uint8Array(currentResult);
- this.reset();
- if (this.removePKCS7Padding) {
- return removePadding(data);
- }
- return data;
- };
- _proto.reset = function reset() {
- this.currentResult = null;
- this.currentIV = null;
- this.remainderData = null;
- if (this.softwareDecrypter) {
- this.softwareDecrypter = null;
- }
- };
- _proto.decrypt = function decrypt(data, key, iv) {
- var _this = this;
- if (this.useSoftware) {
- return new Promise(function (resolve, reject) {
- _this.softwareDecrypt(new Uint8Array(data), key, iv);
- var decryptResult = _this.flush();
- if (decryptResult) {
- resolve(decryptResult.buffer);
- } else {
- reject(new Error('[softwareDecrypt] Failed to decrypt data'));
- }
- });
- }
- return this.webCryptoDecrypt(new Uint8Array(data), key, iv);
- }
-
- // Software decryption is progressive. Progressive decryption may not return a result on each call. Any cached
- // data is handled in the flush() call
- ;
- _proto.softwareDecrypt = function softwareDecrypt(data, key, iv) {
- var currentIV = this.currentIV,
- currentResult = this.currentResult,
- remainderData = this.remainderData;
- this.logOnce('JS AES decrypt');
- // The output is staggered during progressive parsing - the current result is cached, and emitted on the next call
- // This is done in order to strip PKCS7 padding, which is found at the end of each segment. We only know we've reached
- // the end on flush(), but by that time we have already received all bytes for the segment.
- // Progressive decryption does not work with WebCrypto
-
- if (remainderData) {
- data = appendUint8Array(remainderData, data);
- this.remainderData = null;
- }
-
- // Byte length must be a multiple of 16 (AES-128 = 128 bit blocks = 16 bytes)
- var currentChunk = this.getValidChunk(data);
- if (!currentChunk.length) {
- return null;
- }
- if (currentIV) {
- iv = currentIV;
- }
- var softwareDecrypter = this.softwareDecrypter;
- if (!softwareDecrypter) {
- softwareDecrypter = this.softwareDecrypter = new AESDecryptor();
- }
- softwareDecrypter.expandKey(key);
- var result = currentResult;
- this.currentResult = softwareDecrypter.decrypt(currentChunk.buffer, 0, iv);
- this.currentIV = sliceUint8(currentChunk, -16).buffer;
- if (!result) {
- return null;
- }
- return result;
- };
- _proto.webCryptoDecrypt = function webCryptoDecrypt(data, key, iv) {
- var _this2 = this;
- if (this.key !== key || !this.fastAesKey) {
- if (!this.subtle) {
- return Promise.resolve(this.onWebCryptoError(data, key, iv));
- }
- this.key = key;
- this.fastAesKey = new FastAESKey(this.subtle, key);
- }
- return this.fastAesKey.expandKey().then(function (aesKey) {
- // decrypt using web crypto
- if (!_this2.subtle) {
- return Promise.reject(new Error('web crypto not initialized'));
- }
- _this2.logOnce('WebCrypto AES decrypt');
- var crypto = new AESCrypto(_this2.subtle, new Uint8Array(iv));
- return crypto.decrypt(data.buffer, aesKey);
- }).catch(function (err) {
- logger.warn("[decrypter]: WebCrypto Error, disable WebCrypto API, " + err.name + ": " + err.message);
- return _this2.onWebCryptoError(data, key, iv);
- });
- };
- _proto.onWebCryptoError = function onWebCryptoError(data, key, iv) {
- this.useSoftware = true;
- this.logEnabled = true;
- this.softwareDecrypt(data, key, iv);
- var decryptResult = this.flush();
- if (decryptResult) {
- return decryptResult.buffer;
- }
- throw new Error('WebCrypto and softwareDecrypt: failed to decrypt data');
- };
- _proto.getValidChunk = function getValidChunk(data) {
- var currentChunk = data;
- var splitPoint = data.length - data.length % CHUNK_SIZE;
- if (splitPoint !== data.length) {
- currentChunk = sliceUint8(data, 0, splitPoint);
- this.remainderData = sliceUint8(data, splitPoint);
- }
- return currentChunk;
- };
- _proto.logOnce = function logOnce(msg) {
- if (!this.logEnabled) {
- return;
- }
- logger.log("[decrypter]: " + msg);
- this.logEnabled = false;
- };
- return Decrypter;
- }();
-
- /**
- * TimeRanges to string helper
- */
-
- var TimeRanges = {
- toString: function toString(r) {
- var log = '';
- var len = r.length;
- for (var i = 0; i < len; i++) {
- log += "[" + r.start(i).toFixed(3) + "-" + r.end(i).toFixed(3) + "]";
- }
- return log;
- }
- };
-
- var State = {
- STOPPED: 'STOPPED',
- IDLE: 'IDLE',
- KEY_LOADING: 'KEY_LOADING',
- FRAG_LOADING: 'FRAG_LOADING',
- FRAG_LOADING_WAITING_RETRY: 'FRAG_LOADING_WAITING_RETRY',
- WAITING_TRACK: 'WAITING_TRACK',
- PARSING: 'PARSING',
- PARSED: 'PARSED',
- ENDED: 'ENDED',
- ERROR: 'ERROR',
- WAITING_INIT_PTS: 'WAITING_INIT_PTS',
- WAITING_LEVEL: 'WAITING_LEVEL'
- };
- var BaseStreamController = /*#__PURE__*/function (_TaskLoop) {
- _inheritsLoose(BaseStreamController, _TaskLoop);
- function BaseStreamController(hls, fragmentTracker, keyLoader, logPrefix, playlistType) {
- var _this;
- _this = _TaskLoop.call(this) || this;
- _this.hls = void 0;
- _this.fragPrevious = null;
- _this.fragCurrent = null;
- _this.fragmentTracker = void 0;
- _this.transmuxer = null;
- _this._state = State.STOPPED;
- _this.playlistType = void 0;
- _this.media = null;
- _this.mediaBuffer = null;
- _this.config = void 0;
- _this.bitrateTest = false;
- _this.lastCurrentTime = 0;
- _this.nextLoadPosition = 0;
- _this.startPosition = 0;
- _this.startTimeOffset = null;
- _this.loadedmetadata = false;
- _this.retryDate = 0;
- _this.levels = null;
- _this.fragmentLoader = void 0;
- _this.keyLoader = void 0;
- _this.levelLastLoaded = null;
- _this.startFragRequested = false;
- _this.decrypter = void 0;
- _this.initPTS = [];
- _this.onvseeking = null;
- _this.onvended = null;
- _this.logPrefix = '';
- _this.log = void 0;
- _this.warn = void 0;
- _this.playlistType = playlistType;
- _this.logPrefix = logPrefix;
- _this.log = logger.log.bind(logger, logPrefix + ":");
- _this.warn = logger.warn.bind(logger, logPrefix + ":");
- _this.hls = hls;
- _this.fragmentLoader = new FragmentLoader(hls.config);
- _this.keyLoader = keyLoader;
- _this.fragmentTracker = fragmentTracker;
- _this.config = hls.config;
- _this.decrypter = new Decrypter(hls.config);
- hls.on(Events.MANIFEST_LOADED, _this.onManifestLoaded, _assertThisInitialized(_this));
- return _this;
- }
- var _proto = BaseStreamController.prototype;
- _proto.doTick = function doTick() {
- this.onTickEnd();
- };
- _proto.onTickEnd = function onTickEnd() {}
-
- // eslint-disable-next-line @typescript-eslint/no-unused-vars
- ;
- _proto.startLoad = function startLoad(startPosition) {};
- _proto.stopLoad = function stopLoad() {
- this.fragmentLoader.abort();
- this.keyLoader.abort(this.playlistType);
- var frag = this.fragCurrent;
- if (frag != null && frag.loader) {
- frag.abortRequests();
- this.fragmentTracker.removeFragment(frag);
- }
- this.resetTransmuxer();
- this.fragCurrent = null;
- this.fragPrevious = null;
- this.clearInterval();
- this.clearNextTick();
- this.state = State.STOPPED;
- };
- _proto._streamEnded = function _streamEnded(bufferInfo, levelDetails) {
- // If playlist is live, there is another buffered range after the current range, nothing buffered, media is detached,
- // of nothing loading/loaded return false
- if (levelDetails.live || bufferInfo.nextStart || !bufferInfo.end || !this.media) {
- return false;
- }
- var partList = levelDetails.partList;
- // Since the last part isn't guaranteed to correspond to the last playlist segment for Low-Latency HLS,
- // check instead if the last part is buffered.
- if (partList != null && partList.length) {
- var lastPart = partList[partList.length - 1];
-
- // Checking the midpoint of the part for potential margin of error and related issues.
- // NOTE: Technically I believe parts could yield content that is < the computed duration (including potential a duration of 0)
- // and still be spec-compliant, so there may still be edge cases here. Likewise, there could be issues in end of stream
- // part mismatches for independent audio and video playlists/segments.
- var lastPartBuffered = BufferHelper.isBuffered(this.media, lastPart.start + lastPart.duration / 2);
- return lastPartBuffered;
- }
- var playlistType = levelDetails.fragments[levelDetails.fragments.length - 1].type;
- return this.fragmentTracker.isEndListAppended(playlistType);
- };
- _proto.getLevelDetails = function getLevelDetails() {
- if (this.levels && this.levelLastLoaded !== null) {
- var _this$levelLastLoaded;
- return (_this$levelLastLoaded = this.levelLastLoaded) == null ? void 0 : _this$levelLastLoaded.details;
- }
- };
- _proto.onMediaAttached = function onMediaAttached(event, data) {
- var media = this.media = this.mediaBuffer = data.media;
- this.onvseeking = this.onMediaSeeking.bind(this);
- this.onvended = this.onMediaEnded.bind(this);
- media.addEventListener('seeking', this.onvseeking);
- media.addEventListener('ended', this.onvended);
- var config = this.config;
- if (this.levels && config.autoStartLoad && this.state === State.STOPPED) {
- this.startLoad(config.startPosition);
- }
- };
- _proto.onMediaDetaching = function onMediaDetaching() {
- var media = this.media;
- if (media != null && media.ended) {
- this.log('MSE detaching and video ended, reset startPosition');
- this.startPosition = this.lastCurrentTime = 0;
- }
-
- // remove video listeners
- if (media && this.onvseeking && this.onvended) {
- media.removeEventListener('seeking', this.onvseeking);
- media.removeEventListener('ended', this.onvended);
- this.onvseeking = this.onvended = null;
- }
- if (this.keyLoader) {
- this.keyLoader.detach();
- }
- this.media = this.mediaBuffer = null;
- this.loadedmetadata = false;
- this.fragmentTracker.removeAllFragments();
- this.stopLoad();
- };
- _proto.onMediaSeeking = function onMediaSeeking() {
- var config = this.config,
- fragCurrent = this.fragCurrent,
- media = this.media,
- mediaBuffer = this.mediaBuffer,
- state = this.state;
- var currentTime = media ? media.currentTime : 0;
- var bufferInfo = BufferHelper.bufferInfo(mediaBuffer ? mediaBuffer : media, currentTime, config.maxBufferHole);
- this.log("media seeking to " + (isFiniteNumber(currentTime) ? currentTime.toFixed(3) : currentTime) + ", state: " + state);
- if (this.state === State.ENDED) {
- this.resetLoadingState();
- } else if (fragCurrent) {
- // Seeking while frag load is in progress
- var tolerance = config.maxFragLookUpTolerance;
- var fragStartOffset = fragCurrent.start - tolerance;
- var fragEndOffset = fragCurrent.start + fragCurrent.duration + tolerance;
- // if seeking out of buffered range or into new one
- if (!bufferInfo.len || fragEndOffset < bufferInfo.start || fragStartOffset > bufferInfo.end) {
- var pastFragment = currentTime > fragEndOffset;
- // if the seek position is outside the current fragment range
- if (currentTime < fragStartOffset || pastFragment) {
- if (pastFragment && fragCurrent.loader) {
- this.log('seeking outside of buffer while fragment load in progress, cancel fragment load');
- fragCurrent.abortRequests();
- this.resetLoadingState();
- }
- this.fragPrevious = null;
- }
- }
- }
- if (media) {
- // Remove gap fragments
- this.fragmentTracker.removeFragmentsInRange(currentTime, Infinity, this.playlistType, true);
- this.lastCurrentTime = currentTime;
- }
-
- // in case seeking occurs although no media buffered, adjust startPosition and nextLoadPosition to seek target
- if (!this.loadedmetadata && !bufferInfo.len) {
- this.nextLoadPosition = this.startPosition = currentTime;
- }
-
- // Async tick to speed up processing
- this.tickImmediate();
- };
- _proto.onMediaEnded = function onMediaEnded() {
- // reset startPosition and lastCurrentTime to restart playback @ stream beginning
- this.startPosition = this.lastCurrentTime = 0;
- };
- _proto.onManifestLoaded = function onManifestLoaded(event, data) {
- this.startTimeOffset = data.startTimeOffset;
- this.initPTS = [];
- };
- _proto.onHandlerDestroying = function onHandlerDestroying() {
- this.hls.off(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
- this.stopLoad();
- _TaskLoop.prototype.onHandlerDestroying.call(this);
- // @ts-ignore
- this.hls = null;
- };
- _proto.onHandlerDestroyed = function onHandlerDestroyed() {
- this.state = State.STOPPED;
- if (this.fragmentLoader) {
- this.fragmentLoader.destroy();
- }
- if (this.keyLoader) {
- this.keyLoader.destroy();
- }
- if (this.decrypter) {
- this.decrypter.destroy();
- }
- this.hls = this.log = this.warn = this.decrypter = this.keyLoader = this.fragmentLoader = this.fragmentTracker = null;
- _TaskLoop.prototype.onHandlerDestroyed.call(this);
- };
- _proto.loadFragment = function loadFragment(frag, level, targetBufferTime) {
- this._loadFragForPlayback(frag, level, targetBufferTime);
- };
- _proto._loadFragForPlayback = function _loadFragForPlayback(frag, level, targetBufferTime) {
- var _this2 = this;
- var progressCallback = function progressCallback(data) {
- if (_this2.fragContextChanged(frag)) {
- _this2.warn("Fragment " + frag.sn + (data.part ? ' p: ' + data.part.index : '') + " of level " + frag.level + " was dropped during download.");
- _this2.fragmentTracker.removeFragment(frag);
- return;
- }
- frag.stats.chunkCount++;
- _this2._handleFragmentLoadProgress(data);
- };
- this._doFragLoad(frag, level, targetBufferTime, progressCallback).then(function (data) {
- if (!data) {
- // if we're here we probably needed to backtrack or are waiting for more parts
- return;
- }
- var state = _this2.state;
- if (_this2.fragContextChanged(frag)) {
- if (state === State.FRAG_LOADING || !_this2.fragCurrent && state === State.PARSING) {
- _this2.fragmentTracker.removeFragment(frag);
- _this2.state = State.IDLE;
- }
- return;
- }
- if ('payload' in data) {
- _this2.log("Loaded fragment " + frag.sn + " of level " + frag.level);
- _this2.hls.trigger(Events.FRAG_LOADED, data);
- }
-
- // Pass through the whole payload; controllers not implementing progressive loading receive data from this callback
- _this2._handleFragmentLoadComplete(data);
- }).catch(function (reason) {
- if (_this2.state === State.STOPPED || _this2.state === State.ERROR) {
- return;
- }
- _this2.warn("Frag error: " + ((reason == null ? void 0 : reason.message) || reason));
- _this2.resetFragmentLoading(frag);
- });
- };
- _proto.clearTrackerIfNeeded = function clearTrackerIfNeeded(frag) {
- var _this$mediaBuffer;
- var fragmentTracker = this.fragmentTracker;
- var fragState = fragmentTracker.getState(frag);
- if (fragState === FragmentState.APPENDING) {
- // Lower the max buffer length and try again
- var playlistType = frag.type;
- var bufferedInfo = this.getFwdBufferInfo(this.mediaBuffer, playlistType);
- var minForwardBufferLength = Math.max(frag.duration, bufferedInfo ? bufferedInfo.len : this.config.maxBufferLength);
- // If backtracking, always remove from the tracker without reducing max buffer length
- var backtrackFragment = this.backtrackFragment;
- var backtracked = backtrackFragment ? frag.sn - backtrackFragment.sn : 0;
- if (backtracked === 1 || this.reduceMaxBufferLength(minForwardBufferLength, frag.duration)) {
- fragmentTracker.removeFragment(frag);
- }
- } else if (((_this$mediaBuffer = this.mediaBuffer) == null ? void 0 : _this$mediaBuffer.buffered.length) === 0) {
- // Stop gap for bad tracker / buffer flush behavior
- fragmentTracker.removeAllFragments();
- } else if (fragmentTracker.hasParts(frag.type)) {
- // In low latency mode, remove fragments for which only some parts were buffered
- fragmentTracker.detectPartialFragments({
- frag: frag,
- part: null,
- stats: frag.stats,
- id: frag.type
- });
- if (fragmentTracker.getState(frag) === FragmentState.PARTIAL) {
- fragmentTracker.removeFragment(frag);
- }
- }
- };
- _proto.checkLiveUpdate = function checkLiveUpdate(details) {
- if (details.updated && !details.live) {
- // Live stream ended, update fragment tracker
- var lastFragment = details.fragments[details.fragments.length - 1];
- this.fragmentTracker.detectPartialFragments({
- frag: lastFragment,
- part: null,
- stats: lastFragment.stats,
- id: lastFragment.type
- });
- }
- if (!details.fragments[0]) {
- details.deltaUpdateFailed = true;
- }
- };
- _proto.flushMainBuffer = function flushMainBuffer(startOffset, endOffset, type) {
- if (type === void 0) {
- type = null;
- }
- if (!(startOffset - endOffset)) {
- return;
- }
- // When alternate audio is playing, the audio-stream-controller is responsible for the audio buffer. Otherwise,
- // passing a null type flushes both buffers
- var flushScope = {
- startOffset: startOffset,
- endOffset: endOffset,
- type: type
- };
- this.hls.trigger(Events.BUFFER_FLUSHING, flushScope);
- };
- _proto._loadInitSegment = function _loadInitSegment(frag, level) {
- var _this3 = this;
- this._doFragLoad(frag, level).then(function (data) {
- if (!data || _this3.fragContextChanged(frag) || !_this3.levels) {
- throw new Error('init load aborted');
- }
- return data;
- }).then(function (data) {
- var hls = _this3.hls;
- var payload = data.payload;
- var decryptData = frag.decryptdata;
-
- // check to see if the payload needs to be decrypted
- if (payload && payload.byteLength > 0 && decryptData != null && decryptData.key && decryptData.iv && decryptData.method === 'AES-128') {
- var startTime = self.performance.now();
- // decrypt init segment data
- return _this3.decrypter.decrypt(new Uint8Array(payload), decryptData.key.buffer, decryptData.iv.buffer).catch(function (err) {
- hls.trigger(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.FRAG_DECRYPT_ERROR,
- fatal: false,
- error: err,
- reason: err.message,
- frag: frag
- });
- throw err;
- }).then(function (decryptedData) {
- var endTime = self.performance.now();
- hls.trigger(Events.FRAG_DECRYPTED, {
- frag: frag,
- payload: decryptedData,
- stats: {
- tstart: startTime,
- tdecrypt: endTime
- }
- });
- data.payload = decryptedData;
- return _this3.completeInitSegmentLoad(data);
- });
- }
- return _this3.completeInitSegmentLoad(data);
- }).catch(function (reason) {
- if (_this3.state === State.STOPPED || _this3.state === State.ERROR) {
- return;
- }
- _this3.warn(reason);
- _this3.resetFragmentLoading(frag);
- });
- };
- _proto.completeInitSegmentLoad = function completeInitSegmentLoad(data) {
- var levels = this.levels;
- if (!levels) {
- throw new Error('init load aborted, missing levels');
- }
- var stats = data.frag.stats;
- this.state = State.IDLE;
- data.frag.data = new Uint8Array(data.payload);
- stats.parsing.start = stats.buffering.start = self.performance.now();
- stats.parsing.end = stats.buffering.end = self.performance.now();
- this.tick();
- };
- _proto.fragContextChanged = function fragContextChanged(frag) {
- var fragCurrent = this.fragCurrent;
- return !frag || !fragCurrent || frag.sn !== fragCurrent.sn || frag.level !== fragCurrent.level;
- };
- _proto.fragBufferedComplete = function fragBufferedComplete(frag, part) {
- var _frag$startPTS, _frag$endPTS, _this$fragCurrent, _this$fragPrevious;
- var media = this.mediaBuffer ? this.mediaBuffer : this.media;
- this.log("Buffered " + frag.type + " sn: " + frag.sn + (part ? ' part: ' + part.index : '') + " of " + (this.playlistType === PlaylistLevelType.MAIN ? 'level' : 'track') + " " + frag.level + " (frag:[" + ((_frag$startPTS = frag.startPTS) != null ? _frag$startPTS : NaN).toFixed(3) + "-" + ((_frag$endPTS = frag.endPTS) != null ? _frag$endPTS : NaN).toFixed(3) + "] > buffer:" + (media ? TimeRanges.toString(BufferHelper.getBuffered(media)) : '(detached)') + ")");
- if (frag.sn !== 'initSegment') {
- var _this$levels;
- if (frag.type !== PlaylistLevelType.SUBTITLE) {
- var el = frag.elementaryStreams;
- if (!Object.keys(el).some(function (type) {
- return !!el[type];
- })) {
- // empty segment
- this.state = State.IDLE;
- return;
- }
- }
- var level = (_this$levels = this.levels) == null ? void 0 : _this$levels[frag.level];
- if (level != null && level.fragmentError) {
- this.log("Resetting level fragment error count of " + level.fragmentError + " on frag buffered");
- level.fragmentError = 0;
- }
- }
- this.state = State.IDLE;
- if (!media) {
- return;
- }
- if (!this.loadedmetadata && frag.type == PlaylistLevelType.MAIN && media.buffered.length && ((_this$fragCurrent = this.fragCurrent) == null ? void 0 : _this$fragCurrent.sn) === ((_this$fragPrevious = this.fragPrevious) == null ? void 0 : _this$fragPrevious.sn)) {
- this.loadedmetadata = true;
- this.seekToStartPos();
- }
- this.tick();
- };
- _proto.seekToStartPos = function seekToStartPos() {};
- _proto._handleFragmentLoadComplete = function _handleFragmentLoadComplete(fragLoadedEndData) {
- var transmuxer = this.transmuxer;
- if (!transmuxer) {
- return;
- }
- var frag = fragLoadedEndData.frag,
- part = fragLoadedEndData.part,
- partsLoaded = fragLoadedEndData.partsLoaded;
- // If we did not load parts, or loaded all parts, we have complete (not partial) fragment data
- var complete = !partsLoaded || partsLoaded.length === 0 || partsLoaded.some(function (fragLoaded) {
- return !fragLoaded;
- });
- var chunkMeta = new ChunkMetadata(frag.level, frag.sn, frag.stats.chunkCount + 1, 0, part ? part.index : -1, !complete);
- transmuxer.flush(chunkMeta);
- }
-
- // eslint-disable-next-line @typescript-eslint/no-unused-vars
- ;
- _proto._handleFragmentLoadProgress = function _handleFragmentLoadProgress(frag) {};
- _proto._doFragLoad = function _doFragLoad(frag, level, targetBufferTime, progressCallback) {
- var _frag$decryptdata,
- _this4 = this;
- if (targetBufferTime === void 0) {
- targetBufferTime = null;
- }
- var details = level == null ? void 0 : level.details;
- if (!this.levels || !details) {
- throw new Error("frag load aborted, missing level" + (details ? '' : ' detail') + "s");
- }
- var keyLoadingPromise = null;
- if (frag.encrypted && !((_frag$decryptdata = frag.decryptdata) != null && _frag$decryptdata.key)) {
- this.log("Loading key for " + frag.sn + " of [" + details.startSN + "-" + details.endSN + "], " + (this.logPrefix === '[stream-controller]' ? 'level' : 'track') + " " + frag.level);
- this.state = State.KEY_LOADING;
- this.fragCurrent = frag;
- keyLoadingPromise = this.keyLoader.load(frag).then(function (keyLoadedData) {
- if (!_this4.fragContextChanged(keyLoadedData.frag)) {
- _this4.hls.trigger(Events.KEY_LOADED, keyLoadedData);
- if (_this4.state === State.KEY_LOADING) {
- _this4.state = State.IDLE;
- }
- return keyLoadedData;
- }
- });
- this.hls.trigger(Events.KEY_LOADING, {
- frag: frag
- });
- if (this.fragCurrent === null) {
- keyLoadingPromise = Promise.reject(new Error("frag load aborted, context changed in KEY_LOADING"));
- }
- } else if (!frag.encrypted && details.encryptedFragments.length) {
- this.keyLoader.loadClear(frag, details.encryptedFragments);
- }
- targetBufferTime = Math.max(frag.start, targetBufferTime || 0);
- if (this.config.lowLatencyMode && frag.sn !== 'initSegment') {
- var partList = details.partList;
- if (partList && progressCallback) {
- if (targetBufferTime > frag.end && details.fragmentHint) {
- frag = details.fragmentHint;
- }
- var partIndex = this.getNextPart(partList, frag, targetBufferTime);
- if (partIndex > -1) {
- var part = partList[partIndex];
- this.log("Loading part sn: " + frag.sn + " p: " + part.index + " cc: " + frag.cc + " of playlist [" + details.startSN + "-" + details.endSN + "] parts [0-" + partIndex + "-" + (partList.length - 1) + "] " + (this.logPrefix === '[stream-controller]' ? 'level' : 'track') + ": " + frag.level + ", target: " + parseFloat(targetBufferTime.toFixed(3)));
- this.nextLoadPosition = part.start + part.duration;
- this.state = State.FRAG_LOADING;
- var _result;
- if (keyLoadingPromise) {
- _result = keyLoadingPromise.then(function (keyLoadedData) {
- if (!keyLoadedData || _this4.fragContextChanged(keyLoadedData.frag)) {
- return null;
- }
- return _this4.doFragPartsLoad(frag, part, level, progressCallback);
- }).catch(function (error) {
- return _this4.handleFragLoadError(error);
- });
- } else {
- _result = this.doFragPartsLoad(frag, part, level, progressCallback).catch(function (error) {
- return _this4.handleFragLoadError(error);
- });
- }
- this.hls.trigger(Events.FRAG_LOADING, {
- frag: frag,
- part: part,
- targetBufferTime: targetBufferTime
- });
- if (this.fragCurrent === null) {
- return Promise.reject(new Error("frag load aborted, context changed in FRAG_LOADING parts"));
- }
- return _result;
- } else if (!frag.url || this.loadedEndOfParts(partList, targetBufferTime)) {
- // Fragment hint has no parts
- return Promise.resolve(null);
- }
- }
- }
- this.log("Loading fragment " + frag.sn + " cc: " + frag.cc + " " + (details ? 'of [' + details.startSN + '-' + details.endSN + '] ' : '') + (this.logPrefix === '[stream-controller]' ? 'level' : 'track') + ": " + frag.level + ", target: " + parseFloat(targetBufferTime.toFixed(3)));
- // Don't update nextLoadPosition for fragments which are not buffered
- if (isFiniteNumber(frag.sn) && !this.bitrateTest) {
- this.nextLoadPosition = frag.start + frag.duration;
- }
- this.state = State.FRAG_LOADING;
-
- // Load key before streaming fragment data
- var dataOnProgress = this.config.progressive;
- var result;
- if (dataOnProgress && keyLoadingPromise) {
- result = keyLoadingPromise.then(function (keyLoadedData) {
- if (!keyLoadedData || _this4.fragContextChanged(keyLoadedData == null ? void 0 : keyLoadedData.frag)) {
- return null;
- }
- return _this4.fragmentLoader.load(frag, progressCallback);
- }).catch(function (error) {
- return _this4.handleFragLoadError(error);
- });
- } else {
- // load unencrypted fragment data with progress event,
- // or handle fragment result after key and fragment are finished loading
- result = Promise.all([this.fragmentLoader.load(frag, dataOnProgress ? progressCallback : undefined), keyLoadingPromise]).then(function (_ref) {
- var fragLoadedData = _ref[0];
- if (!dataOnProgress && fragLoadedData && progressCallback) {
- progressCallback(fragLoadedData);
- }
- return fragLoadedData;
- }).catch(function (error) {
- return _this4.handleFragLoadError(error);
- });
- }
- this.hls.trigger(Events.FRAG_LOADING, {
- frag: frag,
- targetBufferTime: targetBufferTime
- });
- if (this.fragCurrent === null) {
- return Promise.reject(new Error("frag load aborted, context changed in FRAG_LOADING"));
- }
- return result;
- };
- _proto.doFragPartsLoad = function doFragPartsLoad(frag, fromPart, level, progressCallback) {
- var _this5 = this;
- return new Promise(function (resolve, reject) {
- var _level$details;
- var partsLoaded = [];
- var initialPartList = (_level$details = level.details) == null ? void 0 : _level$details.partList;
- var loadPart = function loadPart(part) {
- _this5.fragmentLoader.loadPart(frag, part, progressCallback).then(function (partLoadedData) {
- partsLoaded[part.index] = partLoadedData;
- var loadedPart = partLoadedData.part;
- _this5.hls.trigger(Events.FRAG_LOADED, partLoadedData);
- var nextPart = getPartWith(level, frag.sn, part.index + 1) || findPart(initialPartList, frag.sn, part.index + 1);
- if (nextPart) {
- loadPart(nextPart);
- } else {
- return resolve({
- frag: frag,
- part: loadedPart,
- partsLoaded: partsLoaded
- });
- }
- }).catch(reject);
- };
- loadPart(fromPart);
- });
- };
- _proto.handleFragLoadError = function handleFragLoadError(error) {
- if ('data' in error) {
- var data = error.data;
- if (error.data && data.details === ErrorDetails.INTERNAL_ABORTED) {
- this.handleFragLoadAborted(data.frag, data.part);
- } else {
- this.hls.trigger(Events.ERROR, data);
- }
- } else {
- this.hls.trigger(Events.ERROR, {
- type: ErrorTypes.OTHER_ERROR,
- details: ErrorDetails.INTERNAL_EXCEPTION,
- err: error,
- error: error,
- fatal: true
- });
- }
- return null;
- };
- _proto._handleTransmuxerFlush = function _handleTransmuxerFlush(chunkMeta) {
- var context = this.getCurrentContext(chunkMeta);
- if (!context || this.state !== State.PARSING) {
- if (!this.fragCurrent && this.state !== State.STOPPED && this.state !== State.ERROR) {
- this.state = State.IDLE;
- }
- return;
- }
- var frag = context.frag,
- part = context.part,
- level = context.level;
- var now = self.performance.now();
- frag.stats.parsing.end = now;
- if (part) {
- part.stats.parsing.end = now;
- }
- this.updateLevelTiming(frag, part, level, chunkMeta.partial);
- };
- _proto.getCurrentContext = function getCurrentContext(chunkMeta) {
- var levels = this.levels,
- fragCurrent = this.fragCurrent;
- var levelIndex = chunkMeta.level,
- sn = chunkMeta.sn,
- partIndex = chunkMeta.part;
- if (!(levels != null && levels[levelIndex])) {
- this.warn("Levels object was unset while buffering fragment " + sn + " of level " + levelIndex + ". The current chunk will not be buffered.");
- return null;
- }
- var level = levels[levelIndex];
- var part = partIndex > -1 ? getPartWith(level, sn, partIndex) : null;
- var frag = part ? part.fragment : getFragmentWithSN(level, sn, fragCurrent);
- if (!frag) {
- return null;
- }
- if (fragCurrent && fragCurrent !== frag) {
- frag.stats = fragCurrent.stats;
- }
- return {
- frag: frag,
- part: part,
- level: level
- };
- };
- _proto.bufferFragmentData = function bufferFragmentData(data, frag, part, chunkMeta, noBacktracking) {
- var _buffer;
- if (!data || this.state !== State.PARSING) {
- return;
- }
- var data1 = data.data1,
- data2 = data.data2;
- var buffer = data1;
- if (data1 && data2) {
- // Combine the moof + mdat so that we buffer with a single append
- buffer = appendUint8Array(data1, data2);
- }
- if (!((_buffer = buffer) != null && _buffer.length)) {
- return;
- }
- var segment = {
- type: data.type,
- frag: frag,
- part: part,
- chunkMeta: chunkMeta,
- parent: frag.type,
- data: buffer
- };
- this.hls.trigger(Events.BUFFER_APPENDING, segment);
- if (data.dropped && data.independent && !part) {
- if (noBacktracking) {
- return;
- }
- // Clear buffer so that we reload previous segments sequentially if required
- this.flushBufferGap(frag);
- }
- };
- _proto.flushBufferGap = function flushBufferGap(frag) {
- var media = this.media;
- if (!media) {
- return;
- }
- // If currentTime is not buffered, clear the back buffer so that we can backtrack as much as needed
- if (!BufferHelper.isBuffered(media, media.currentTime)) {
- this.flushMainBuffer(0, frag.start);
- return;
- }
- // Remove back-buffer without interrupting playback to allow back tracking
- var currentTime = media.currentTime;
- var bufferInfo = BufferHelper.bufferInfo(media, currentTime, 0);
- var fragDuration = frag.duration;
- var segmentFraction = Math.min(this.config.maxFragLookUpTolerance * 2, fragDuration * 0.25);
- var start = Math.max(Math.min(frag.start - segmentFraction, bufferInfo.end - segmentFraction), currentTime + segmentFraction);
- if (frag.start - start > segmentFraction) {
- this.flushMainBuffer(start, frag.start);
- }
- };
- _proto.getFwdBufferInfo = function getFwdBufferInfo(bufferable, type) {
- var pos = this.getLoadPosition();
- if (!isFiniteNumber(pos)) {
- return null;
- }
- return this.getFwdBufferInfoAtPos(bufferable, pos, type);
- };
- _proto.getFwdBufferInfoAtPos = function getFwdBufferInfoAtPos(bufferable, pos, type) {
- var maxBufferHole = this.config.maxBufferHole;
- var bufferInfo = BufferHelper.bufferInfo(bufferable, pos, maxBufferHole);
- // Workaround flaw in getting forward buffer when maxBufferHole is smaller than gap at current pos
- if (bufferInfo.len === 0 && bufferInfo.nextStart !== undefined) {
- var bufferedFragAtPos = this.fragmentTracker.getBufferedFrag(pos, type);
- if (bufferedFragAtPos && bufferInfo.nextStart < bufferedFragAtPos.end) {
- return BufferHelper.bufferInfo(bufferable, pos, Math.max(bufferInfo.nextStart, maxBufferHole));
- }
- }
- return bufferInfo;
- };
- _proto.getMaxBufferLength = function getMaxBufferLength(levelBitrate) {
- var config = this.config;
- var maxBufLen;
- if (levelBitrate) {
- maxBufLen = Math.max(8 * config.maxBufferSize / levelBitrate, config.maxBufferLength);
- } else {
- maxBufLen = config.maxBufferLength;
- }
- return Math.min(maxBufLen, config.maxMaxBufferLength);
- };
- _proto.reduceMaxBufferLength = function reduceMaxBufferLength(threshold, fragDuration) {
- var config = this.config;
- var minLength = Math.max(Math.min(threshold - fragDuration, config.maxBufferLength), fragDuration);
- var reducedLength = Math.max(threshold - fragDuration * 3, config.maxMaxBufferLength / 2, minLength);
- if (reducedLength >= minLength) {
- // reduce max buffer length as it might be too high. we do this to avoid loop flushing ...
- config.maxMaxBufferLength = reducedLength;
- this.warn("Reduce max buffer length to " + reducedLength + "s");
- return true;
- }
- return false;
- };
- _proto.getAppendedFrag = function getAppendedFrag(position, playlistType) {
- var fragOrPart = this.fragmentTracker.getAppendedFrag(position, PlaylistLevelType.MAIN);
- if (fragOrPart && 'fragment' in fragOrPart) {
- return fragOrPart.fragment;
- }
- return fragOrPart;
- };
- _proto.getNextFragment = function getNextFragment(pos, levelDetails) {
- var fragments = levelDetails.fragments;
- var fragLen = fragments.length;
- if (!fragLen) {
- return null;
- }
-
- // find fragment index, contiguous with end of buffer position
- var config = this.config;
- var start = fragments[0].start;
- var frag;
- if (levelDetails.live) {
- var initialLiveManifestSize = config.initialLiveManifestSize;
- if (fragLen < initialLiveManifestSize) {
- this.warn("Not enough fragments to start playback (have: " + fragLen + ", need: " + initialLiveManifestSize + ")");
- return null;
- }
- // The real fragment start times for a live stream are only known after the PTS range for that level is known.
- // In order to discover the range, we load the best matching fragment for that level and demux it.
- // Do not load using live logic if the starting frag is requested - we want to use getFragmentAtPosition() so that
- // we get the fragment matching that start time
- if (!levelDetails.PTSKnown && !this.startFragRequested && this.startPosition === -1 || pos < start) {
- frag = this.getInitialLiveFragment(levelDetails, fragments);
- this.startPosition = this.nextLoadPosition = frag ? this.hls.liveSyncPosition || frag.start : pos;
- }
- } else if (pos <= start) {
- // VoD playlist: if loadPosition before start of playlist, load first fragment
- frag = fragments[0];
- }
-
- // If we haven't run into any special cases already, just load the fragment most closely matching the requested position
- if (!frag) {
- var end = config.lowLatencyMode ? levelDetails.partEnd : levelDetails.fragmentEnd;
- frag = this.getFragmentAtPosition(pos, end, levelDetails);
- }
- return this.mapToInitFragWhenRequired(frag);
- };
- _proto.isLoopLoading = function isLoopLoading(frag, targetBufferTime) {
- var trackerState = this.fragmentTracker.getState(frag);
- return (trackerState === FragmentState.OK || trackerState === FragmentState.PARTIAL && !!frag.gap) && this.nextLoadPosition > targetBufferTime;
- };
- _proto.getNextFragmentLoopLoading = function getNextFragmentLoopLoading(frag, levelDetails, bufferInfo, playlistType, maxBufLen) {
- var gapStart = frag.gap;
- var nextFragment = this.getNextFragment(this.nextLoadPosition, levelDetails);
- if (nextFragment === null) {
- return nextFragment;
- }
- frag = nextFragment;
- if (gapStart && frag && !frag.gap && bufferInfo.nextStart) {
- // Media buffered after GAP tags should not make the next buffer timerange exceed forward buffer length
- var nextbufferInfo = this.getFwdBufferInfoAtPos(this.mediaBuffer ? this.mediaBuffer : this.media, bufferInfo.nextStart, playlistType);
- if (nextbufferInfo !== null && bufferInfo.len + nextbufferInfo.len >= maxBufLen) {
- // Returning here might result in not finding an audio and video candiate to skip to
- this.log("buffer full after gaps in \"" + playlistType + "\" playlist starting at sn: " + frag.sn);
- return null;
- }
- }
- return frag;
- };
- _proto.mapToInitFragWhenRequired = function mapToInitFragWhenRequired(frag) {
- // If an initSegment is present, it must be buffered first
- if (frag != null && frag.initSegment && !(frag != null && frag.initSegment.data) && !this.bitrateTest) {
- return frag.initSegment;
- }
- return frag;
- };
- _proto.getNextPart = function getNextPart(partList, frag, targetBufferTime) {
- var nextPart = -1;
- var contiguous = false;
- var independentAttrOmitted = true;
- for (var i = 0, len = partList.length; i < len; i++) {
- var part = partList[i];
- independentAttrOmitted = independentAttrOmitted && !part.independent;
- if (nextPart > -1 && targetBufferTime < part.start) {
- break;
- }
- var loaded = part.loaded;
- if (loaded) {
- nextPart = -1;
- } else if ((contiguous || part.independent || independentAttrOmitted) && part.fragment === frag) {
- nextPart = i;
- }
- contiguous = loaded;
- }
- return nextPart;
- };
- _proto.loadedEndOfParts = function loadedEndOfParts(partList, targetBufferTime) {
- var lastPart = partList[partList.length - 1];
- return lastPart && targetBufferTime > lastPart.start && lastPart.loaded;
- }
-
- /*
- This method is used find the best matching first fragment for a live playlist. This fragment is used to calculate the
- "sliding" of the playlist, which is its offset from the start of playback. After sliding we can compute the real
- start and end times for each fragment in the playlist (after which this method will not need to be called).
- */;
- _proto.getInitialLiveFragment = function getInitialLiveFragment(levelDetails, fragments) {
- var fragPrevious = this.fragPrevious;
- var frag = null;
- if (fragPrevious) {
- if (levelDetails.hasProgramDateTime) {
- // Prefer using PDT, because it can be accurate enough to choose the correct fragment without knowing the level sliding
- this.log("Live playlist, switching playlist, load frag with same PDT: " + fragPrevious.programDateTime);
- frag = findFragmentByPDT(fragments, fragPrevious.endProgramDateTime, this.config.maxFragLookUpTolerance);
- }
- if (!frag) {
- // SN does not need to be accurate between renditions, but depending on the packaging it may be so.
- var targetSN = fragPrevious.sn + 1;
- if (targetSN >= levelDetails.startSN && targetSN <= levelDetails.endSN) {
- var fragNext = fragments[targetSN - levelDetails.startSN];
- // Ensure that we're staying within the continuity range, since PTS resets upon a new range
- if (fragPrevious.cc === fragNext.cc) {
- frag = fragNext;
- this.log("Live playlist, switching playlist, load frag with next SN: " + frag.sn);
- }
- }
- // It's important to stay within the continuity range if available; otherwise the fragments in the playlist
- // will have the wrong start times
- if (!frag) {
- frag = findFragWithCC(fragments, fragPrevious.cc);
- if (frag) {
- this.log("Live playlist, switching playlist, load frag with same CC: " + frag.sn);
- }
- }
- }
- } else {
- // Find a new start fragment when fragPrevious is null
- var liveStart = this.hls.liveSyncPosition;
- if (liveStart !== null) {
- frag = this.getFragmentAtPosition(liveStart, this.bitrateTest ? levelDetails.fragmentEnd : levelDetails.edge, levelDetails);
- }
- }
- return frag;
- }
-
- /*
- This method finds the best matching fragment given the provided position.
- */;
- _proto.getFragmentAtPosition = function getFragmentAtPosition(bufferEnd, end, levelDetails) {
- var config = this.config;
- var fragPrevious = this.fragPrevious;
- var fragments = levelDetails.fragments,
- endSN = levelDetails.endSN;
- var fragmentHint = levelDetails.fragmentHint;
- var maxFragLookUpTolerance = config.maxFragLookUpTolerance;
- var partList = levelDetails.partList;
- var loadingParts = !!(config.lowLatencyMode && partList != null && partList.length && fragmentHint);
- if (loadingParts && fragmentHint && !this.bitrateTest) {
- // Include incomplete fragment with parts at end
- fragments = fragments.concat(fragmentHint);
- endSN = fragmentHint.sn;
- }
- var frag;
- if (bufferEnd < end) {
- var lookupTolerance = bufferEnd > end - maxFragLookUpTolerance ? 0 : maxFragLookUpTolerance;
- // Remove the tolerance if it would put the bufferEnd past the actual end of stream
- // Uses buffer and sequence number to calculate switch segment (required if using EXT-X-DISCONTINUITY-SEQUENCE)
- frag = findFragmentByPTS(fragPrevious, fragments, bufferEnd, lookupTolerance);
- } else {
- // reach end of playlist
- frag = fragments[fragments.length - 1];
- }
- if (frag) {
- var curSNIdx = frag.sn - levelDetails.startSN;
- // Move fragPrevious forward to support forcing the next fragment to load
- // when the buffer catches up to a previously buffered range.
- var fragState = this.fragmentTracker.getState(frag);
- if (fragState === FragmentState.OK || fragState === FragmentState.PARTIAL && frag.gap) {
- fragPrevious = frag;
- }
- if (fragPrevious && frag.sn === fragPrevious.sn && (!loadingParts || partList[0].fragment.sn > frag.sn)) {
- // Force the next fragment to load if the previous one was already selected. This can occasionally happen with
- // non-uniform fragment durations
- var sameLevel = fragPrevious && frag.level === fragPrevious.level;
- if (sameLevel) {
- var nextFrag = fragments[curSNIdx + 1];
- if (frag.sn < endSN && this.fragmentTracker.getState(nextFrag) !== FragmentState.OK) {
- frag = nextFrag;
- } else {
- frag = null;
- }
- }
- }
- }
- return frag;
- };
- _proto.synchronizeToLiveEdge = function synchronizeToLiveEdge(levelDetails) {
- var config = this.config,
- media = this.media;
- if (!media) {
- return;
- }
- var liveSyncPosition = this.hls.liveSyncPosition;
- var currentTime = media.currentTime;
- var start = levelDetails.fragments[0].start;
- var end = levelDetails.edge;
- var withinSlidingWindow = currentTime >= start - config.maxFragLookUpTolerance && currentTime <= end;
- // Continue if we can seek forward to sync position or if current time is outside of sliding window
- if (liveSyncPosition !== null && media.duration > liveSyncPosition && (currentTime < liveSyncPosition || !withinSlidingWindow)) {
- // Continue if buffer is starving or if current time is behind max latency
- var maxLatency = config.liveMaxLatencyDuration !== undefined ? config.liveMaxLatencyDuration : config.liveMaxLatencyDurationCount * levelDetails.targetduration;
- if (!withinSlidingWindow && media.readyState < 4 || currentTime < end - maxLatency) {
- if (!this.loadedmetadata) {
- this.nextLoadPosition = liveSyncPosition;
- }
- // Only seek if ready and there is not a significant forward buffer available for playback
- if (media.readyState) {
- this.warn("Playback: " + currentTime.toFixed(3) + " is located too far from the end of live sliding playlist: " + end + ", reset currentTime to : " + liveSyncPosition.toFixed(3));
- media.currentTime = liveSyncPosition;
- }
- }
- }
- };
- _proto.alignPlaylists = function alignPlaylists(details, previousDetails, switchDetails) {
- // FIXME: If not for `shouldAlignOnDiscontinuities` requiring fragPrevious.cc,
- // this could all go in level-helper mergeDetails()
- var length = details.fragments.length;
- if (!length) {
- this.warn("No fragments in live playlist");
- return 0;
- }
- var slidingStart = details.fragments[0].start;
- var firstLevelLoad = !previousDetails;
- var aligned = details.alignedSliding && isFiniteNumber(slidingStart);
- if (firstLevelLoad || !aligned && !slidingStart) {
- var fragPrevious = this.fragPrevious;
- alignStream(fragPrevious, switchDetails, details);
- var alignedSlidingStart = details.fragments[0].start;
- this.log("Live playlist sliding: " + alignedSlidingStart.toFixed(2) + " start-sn: " + (previousDetails ? previousDetails.startSN : 'na') + "->" + details.startSN + " prev-sn: " + (fragPrevious ? fragPrevious.sn : 'na') + " fragments: " + length);
- return alignedSlidingStart;
- }
- return slidingStart;
- };
- _proto.waitForCdnTuneIn = function waitForCdnTuneIn(details) {
- // Wait for Low-Latency CDN Tune-in to get an updated playlist
- var advancePartLimit = 3;
- return details.live && details.canBlockReload && details.partTarget && details.tuneInGoal > Math.max(details.partHoldBack, details.partTarget * advancePartLimit);
- };
- _proto.setStartPosition = function setStartPosition(details, sliding) {
- // compute start position if set to -1. use it straight away if value is defined
- var startPosition = this.startPosition;
- if (startPosition < sliding) {
- startPosition = -1;
- }
- if (startPosition === -1 || this.lastCurrentTime === -1) {
- // Use Playlist EXT-X-START:TIME-OFFSET when set
- // Prioritize Multivariant Playlist offset so that main, audio, and subtitle stream-controller start times match
- var offsetInMultivariantPlaylist = this.startTimeOffset !== null;
- var startTimeOffset = offsetInMultivariantPlaylist ? this.startTimeOffset : details.startTimeOffset;
- if (startTimeOffset !== null && isFiniteNumber(startTimeOffset)) {
- startPosition = sliding + startTimeOffset;
- if (startTimeOffset < 0) {
- startPosition += details.totalduration;
- }
- startPosition = Math.min(Math.max(sliding, startPosition), sliding + details.totalduration);
- this.log("Start time offset " + startTimeOffset + " found in " + (offsetInMultivariantPlaylist ? 'multivariant' : 'media') + " playlist, adjust startPosition to " + startPosition);
- this.startPosition = startPosition;
- } else if (details.live) {
- // Leave this.startPosition at -1, so that we can use `getInitialLiveFragment` logic when startPosition has
- // not been specified via the config or an as an argument to startLoad (#3736).
- startPosition = this.hls.liveSyncPosition || sliding;
- } else {
- this.startPosition = startPosition = 0;
- }
- this.lastCurrentTime = startPosition;
- }
- this.nextLoadPosition = startPosition;
- };
- _proto.getLoadPosition = function getLoadPosition() {
- var media = this.media;
- // if we have not yet loaded any fragment, start loading from start position
- var pos = 0;
- if (this.loadedmetadata && media) {
- pos = media.currentTime;
- } else if (this.nextLoadPosition) {
- pos = this.nextLoadPosition;
- }
- return pos;
- };
- _proto.handleFragLoadAborted = function handleFragLoadAborted(frag, part) {
- if (this.transmuxer && frag.sn !== 'initSegment' && frag.stats.aborted) {
- this.warn("Fragment " + frag.sn + (part ? ' part ' + part.index : '') + " of level " + frag.level + " was aborted");
- this.resetFragmentLoading(frag);
- }
- };
- _proto.resetFragmentLoading = function resetFragmentLoading(frag) {
- if (!this.fragCurrent || !this.fragContextChanged(frag) && this.state !== State.FRAG_LOADING_WAITING_RETRY) {
- this.state = State.IDLE;
- }
- };
- _proto.onFragmentOrKeyLoadError = function onFragmentOrKeyLoadError(filterType, data) {
- if (data.chunkMeta && !data.frag) {
- var context = this.getCurrentContext(data.chunkMeta);
- if (context) {
- data.frag = context.frag;
- }
- }
- var frag = data.frag;
- // Handle frag error related to caller's filterType
- if (!frag || frag.type !== filterType || !this.levels) {
- return;
- }
- if (this.fragContextChanged(frag)) {
- var _this$fragCurrent2;
- this.warn("Frag load error must match current frag to retry " + frag.url + " > " + ((_this$fragCurrent2 = this.fragCurrent) == null ? void 0 : _this$fragCurrent2.url));
- return;
- }
- var gapTagEncountered = data.details === ErrorDetails.FRAG_GAP;
- if (gapTagEncountered) {
- this.fragmentTracker.fragBuffered(frag, true);
- }
- // keep retrying until the limit will be reached
- var errorAction = data.errorAction;
- var _ref2 = errorAction || {},
- action = _ref2.action,
- _ref2$retryCount = _ref2.retryCount,
- retryCount = _ref2$retryCount === void 0 ? 0 : _ref2$retryCount,
- retryConfig = _ref2.retryConfig;
- if (errorAction && action === NetworkErrorAction.RetryRequest && retryConfig) {
- this.resetStartWhenNotLoaded(this.levelLastLoaded);
- var delay = getRetryDelay(retryConfig, retryCount);
- this.warn("Fragment " + frag.sn + " of " + filterType + " " + frag.level + " errored with " + data.details + ", retrying loading " + (retryCount + 1) + "/" + retryConfig.maxNumRetry + " in " + delay + "ms");
- errorAction.resolved = true;
- this.retryDate = self.performance.now() + delay;
- this.state = State.FRAG_LOADING_WAITING_RETRY;
- } else if (retryConfig && errorAction) {
- this.resetFragmentErrors(filterType);
- if (retryCount < retryConfig.maxNumRetry) {
- // Network retry is skipped when level switch is preferred
- if (!gapTagEncountered && action !== NetworkErrorAction.RemoveAlternatePermanently) {
- errorAction.resolved = true;
- }
- } else {
- logger.warn(data.details + " reached or exceeded max retry (" + retryCount + ")");
- return;
- }
- } else if ((errorAction == null ? void 0 : errorAction.action) === NetworkErrorAction.SendAlternateToPenaltyBox) {
- this.state = State.WAITING_LEVEL;
- } else {
- this.state = State.ERROR;
- }
- // Perform next async tick sooner to speed up error action resolution
- this.tickImmediate();
- };
- _proto.reduceLengthAndFlushBuffer = function reduceLengthAndFlushBuffer(data) {
- // if in appending state
- if (this.state === State.PARSING || this.state === State.PARSED) {
- var frag = data.frag;
- var playlistType = data.parent;
- var bufferedInfo = this.getFwdBufferInfo(this.mediaBuffer, playlistType);
- // 0.5 : tolerance needed as some browsers stalls playback before reaching buffered end
- // reduce max buf len if current position is buffered
- var buffered = bufferedInfo && bufferedInfo.len > 0.5;
- if (buffered) {
- this.reduceMaxBufferLength(bufferedInfo.len, (frag == null ? void 0 : frag.duration) || 10);
- }
- var flushBuffer = !buffered;
- if (flushBuffer) {
- // current position is not buffered, but browser is still complaining about buffer full error
- // this happens on IE/Edge, refer to https://github.com/video-dev/hls.js/pull/708
- // in that case flush the whole audio buffer to recover
- this.warn("Buffer full error while media.currentTime is not buffered, flush " + playlistType + " buffer");
- }
- if (frag) {
- this.fragmentTracker.removeFragment(frag);
- this.nextLoadPosition = frag.start;
- }
- this.resetLoadingState();
- return flushBuffer;
- }
- return false;
- };
- _proto.resetFragmentErrors = function resetFragmentErrors(filterType) {
- if (filterType === PlaylistLevelType.AUDIO) {
- // Reset current fragment since audio track audio is essential and may not have a fail-over track
- this.fragCurrent = null;
- }
- // Fragment errors that result in a level switch or redundant fail-over
- // should reset the stream controller state to idle
- if (!this.loadedmetadata) {
- this.startFragRequested = false;
- }
- if (this.state !== State.STOPPED) {
- this.state = State.IDLE;
- }
- };
- _proto.afterBufferFlushed = function afterBufferFlushed(media, bufferType, playlistType) {
- if (!media) {
- return;
- }
- // After successful buffer flushing, filter flushed fragments from bufferedFrags use mediaBuffered instead of media
- // (so that we will check against video.buffered ranges in case of alt audio track)
- var bufferedTimeRanges = BufferHelper.getBuffered(media);
- this.fragmentTracker.detectEvictedFragments(bufferType, bufferedTimeRanges, playlistType);
- if (this.state === State.ENDED) {
- this.resetLoadingState();
- }
- };
- _proto.resetLoadingState = function resetLoadingState() {
- this.log('Reset loading state');
- this.fragCurrent = null;
- this.fragPrevious = null;
- this.state = State.IDLE;
- };
- _proto.resetStartWhenNotLoaded = function resetStartWhenNotLoaded(level) {
- // if loadedmetadata is not set, it means that first frag request failed
- // in that case, reset startFragRequested flag
- if (!this.loadedmetadata) {
- this.startFragRequested = false;
- var details = level ? level.details : null;
- if (details != null && details.live) {
- // Update the start position and return to IDLE to recover live start
- this.startPosition = -1;
- this.setStartPosition(details, 0);
- this.resetLoadingState();
- } else {
- this.nextLoadPosition = this.startPosition;
- }
- }
- };
- _proto.resetWhenMissingContext = function resetWhenMissingContext(chunkMeta) {
- this.warn("The loading context changed while buffering fragment " + chunkMeta.sn + " of level " + chunkMeta.level + ". This chunk will not be buffered.");
- this.removeUnbufferedFrags();
- this.resetStartWhenNotLoaded(this.levelLastLoaded);
- this.resetLoadingState();
- };
- _proto.removeUnbufferedFrags = function removeUnbufferedFrags(start) {
- if (start === void 0) {
- start = 0;
- }
- this.fragmentTracker.removeFragmentsInRange(start, Infinity, this.playlistType, false, true);
- };
- _proto.updateLevelTiming = function updateLevelTiming(frag, part, level, partial) {
- var _this6 = this,
- _this$transmuxer;
- var details = level.details;
- if (!details) {
- this.warn('level.details undefined');
- return;
- }
- var parsed = Object.keys(frag.elementaryStreams).reduce(function (result, type) {
- var info = frag.elementaryStreams[type];
- if (info) {
- var parsedDuration = info.endPTS - info.startPTS;
- if (parsedDuration <= 0) {
- // Destroy the transmuxer after it's next time offset failed to advance because duration was <= 0.
- // The new transmuxer will be configured with a time offset matching the next fragment start,
- // preventing the timeline from shifting.
- _this6.warn("Could not parse fragment " + frag.sn + " " + type + " duration reliably (" + parsedDuration + ")");
- return result || false;
- }
- var drift = partial ? 0 : updateFragPTSDTS(details, frag, info.startPTS, info.endPTS, info.startDTS, info.endDTS);
- _this6.hls.trigger(Events.LEVEL_PTS_UPDATED, {
- details: details,
- level: level,
- drift: drift,
- type: type,
- frag: frag,
- start: info.startPTS,
- end: info.endPTS
- });
- return true;
- }
- return result;
- }, false);
- if (!parsed && ((_this$transmuxer = this.transmuxer) == null ? void 0 : _this$transmuxer.error) === null) {
- var error = new Error("Found no media in fragment " + frag.sn + " of level " + frag.level + " resetting transmuxer to fallback to playlist timing");
- if (level.fragmentError === 0) {
- // Mark and track the odd empty segment as a gap to avoid reloading
- level.fragmentError++;
- frag.gap = true;
- this.fragmentTracker.removeFragment(frag);
- this.fragmentTracker.fragBuffered(frag, true);
- }
- this.warn(error.message);
- this.hls.trigger(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.FRAG_PARSING_ERROR,
- fatal: false,
- error: error,
- frag: frag,
- reason: "Found no media in msn " + frag.sn + " of level \"" + level.url + "\""
- });
- if (!this.hls) {
- return;
- }
- this.resetTransmuxer();
- // For this error fallthrough. Marking parsed will allow advancing to next fragment.
- }
- this.state = State.PARSED;
- this.hls.trigger(Events.FRAG_PARSED, {
- frag: frag,
- part: part
- });
- };
- _proto.resetTransmuxer = function resetTransmuxer() {
- if (this.transmuxer) {
- this.transmuxer.destroy();
- this.transmuxer = null;
- }
- };
- _proto.recoverWorkerError = function recoverWorkerError(data) {
- if (data.event === 'demuxerWorker') {
- this.fragmentTracker.removeAllFragments();
- this.resetTransmuxer();
- this.resetStartWhenNotLoaded(this.levelLastLoaded);
- this.resetLoadingState();
- }
- };
- _createClass(BaseStreamController, [{
- key: "state",
- get: function get() {
- return this._state;
- },
- set: function set(nextState) {
- var previousState = this._state;
- if (previousState !== nextState) {
- this._state = nextState;
- this.log(previousState + "->" + nextState);
- }
- }
- }]);
- return BaseStreamController;
- }(TaskLoop);
-
- var ChunkCache = /*#__PURE__*/function () {
- function ChunkCache() {
- this.chunks = [];
- this.dataLength = 0;
- }
- var _proto = ChunkCache.prototype;
- _proto.push = function push(chunk) {
- this.chunks.push(chunk);
- this.dataLength += chunk.length;
- };
- _proto.flush = function flush() {
- var chunks = this.chunks,
- dataLength = this.dataLength;
- var result;
- if (!chunks.length) {
- return new Uint8Array(0);
- } else if (chunks.length === 1) {
- result = chunks[0];
- } else {
- result = concatUint8Arrays(chunks, dataLength);
- }
- this.reset();
- return result;
- };
- _proto.reset = function reset() {
- this.chunks.length = 0;
- this.dataLength = 0;
- };
- return ChunkCache;
- }();
- function concatUint8Arrays(chunks, dataLength) {
- var result = new Uint8Array(dataLength);
- var offset = 0;
- for (var i = 0; i < chunks.length; i++) {
- var chunk = chunks[i];
- result.set(chunk, offset);
- offset += chunk.length;
- }
- return result;
- }
-
- function dummyTrack(type, inputTimeScale) {
- if (type === void 0) {
- type = '';
- }
- if (inputTimeScale === void 0) {
- inputTimeScale = 90000;
- }
- return {
- type: type,
- id: -1,
- pid: -1,
- inputTimeScale: inputTimeScale,
- sequenceNumber: -1,
- samples: [],
- dropped: 0
- };
- }
-
- var BaseAudioDemuxer = /*#__PURE__*/function () {
- function BaseAudioDemuxer() {
- this._audioTrack = void 0;
- this._id3Track = void 0;
- this.frameIndex = 0;
- this.cachedData = null;
- this.basePTS = null;
- this.initPTS = null;
- this.lastPTS = null;
- }
- var _proto = BaseAudioDemuxer.prototype;
- _proto.resetInitSegment = function resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration) {
- this._id3Track = {
- type: 'id3',
- id: 3,
- pid: -1,
- inputTimeScale: 90000,
- sequenceNumber: 0,
- samples: [],
- dropped: 0
- };
- };
- _proto.resetTimeStamp = function resetTimeStamp(deaultTimestamp) {
- this.initPTS = deaultTimestamp;
- this.resetContiguity();
- };
- _proto.resetContiguity = function resetContiguity() {
- this.basePTS = null;
- this.lastPTS = null;
- this.frameIndex = 0;
- };
- _proto.canParse = function canParse(data, offset) {
- return false;
- };
- _proto.appendFrame = function appendFrame(track, data, offset) {}
-
- // feed incoming data to the front of the parsing pipeline
- ;
- _proto.demux = function demux(data, timeOffset) {
- if (this.cachedData) {
- data = appendUint8Array(this.cachedData, data);
- this.cachedData = null;
- }
- var id3Data = getID3Data(data, 0);
- var offset = id3Data ? id3Data.length : 0;
- var lastDataIndex;
- var track = this._audioTrack;
- var id3Track = this._id3Track;
- var timestamp = id3Data ? getTimeStamp(id3Data) : undefined;
- var length = data.length;
- if (this.basePTS === null || this.frameIndex === 0 && isFiniteNumber(timestamp)) {
- this.basePTS = initPTSFn(timestamp, timeOffset, this.initPTS);
- this.lastPTS = this.basePTS;
- }
- if (this.lastPTS === null) {
- this.lastPTS = this.basePTS;
- }
-
- // more expressive than alternative: id3Data?.length
- if (id3Data && id3Data.length > 0) {
- id3Track.samples.push({
- pts: this.lastPTS,
- dts: this.lastPTS,
- data: id3Data,
- type: MetadataSchema.audioId3,
- duration: Number.POSITIVE_INFINITY
- });
- }
- while (offset < length) {
- if (this.canParse(data, offset)) {
- var frame = this.appendFrame(track, data, offset);
- if (frame) {
- this.frameIndex++;
- this.lastPTS = frame.sample.pts;
- offset += frame.length;
- lastDataIndex = offset;
- } else {
- offset = length;
- }
- } else if (canParse$2(data, offset)) {
- // after a ID3.canParse, a call to ID3.getID3Data *should* always returns some data
- id3Data = getID3Data(data, offset);
- id3Track.samples.push({
- pts: this.lastPTS,
- dts: this.lastPTS,
- data: id3Data,
- type: MetadataSchema.audioId3,
- duration: Number.POSITIVE_INFINITY
- });
- offset += id3Data.length;
- lastDataIndex = offset;
- } else {
- offset++;
- }
- if (offset === length && lastDataIndex !== length) {
- var partialData = sliceUint8(data, lastDataIndex);
- if (this.cachedData) {
- this.cachedData = appendUint8Array(this.cachedData, partialData);
- } else {
- this.cachedData = partialData;
- }
- }
- }
- return {
- audioTrack: track,
- videoTrack: dummyTrack(),
- id3Track: id3Track,
- textTrack: dummyTrack()
- };
- };
- _proto.demuxSampleAes = function demuxSampleAes(data, keyData, timeOffset) {
- return Promise.reject(new Error("[" + this + "] This demuxer does not support Sample-AES decryption"));
- };
- _proto.flush = function flush(timeOffset) {
- // Parse cache in case of remaining frames.
- var cachedData = this.cachedData;
- if (cachedData) {
- this.cachedData = null;
- this.demux(cachedData, 0);
- }
- return {
- audioTrack: this._audioTrack,
- videoTrack: dummyTrack(),
- id3Track: this._id3Track,
- textTrack: dummyTrack()
- };
- };
- _proto.destroy = function destroy() {};
- return BaseAudioDemuxer;
- }();
- /**
- * Initialize PTS
- *
- * use timestamp unless it is undefined, NaN or Infinity
- *
- */
- var initPTSFn = function initPTSFn(timestamp, timeOffset, initPTS) {
- if (isFiniteNumber(timestamp)) {
- return timestamp * 90;
- }
- var init90kHz = initPTS ? initPTS.baseTime * 90000 / initPTS.timescale : 0;
- return timeOffset * 90000 + init90kHz;
- };
-
- /**
- * ADTS parser helper
- * @link https://wiki.multimedia.cx/index.php?title=ADTS
- */
- function getAudioConfig(observer, data, offset, audioCodec) {
- var adtsObjectType;
- var adtsExtensionSamplingIndex;
- var adtsChannelConfig;
- var config;
- var userAgent = navigator.userAgent.toLowerCase();
- var manifestCodec = audioCodec;
- var adtsSamplingRates = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];
- // byte 2
- adtsObjectType = ((data[offset + 2] & 0xc0) >>> 6) + 1;
- var adtsSamplingIndex = (data[offset + 2] & 0x3c) >>> 2;
- if (adtsSamplingIndex > adtsSamplingRates.length - 1) {
- var error = new Error("invalid ADTS sampling index:" + adtsSamplingIndex);
- observer.emit(Events.ERROR, Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.FRAG_PARSING_ERROR,
- fatal: true,
- error: error,
- reason: error.message
- });
- return;
- }
- adtsChannelConfig = (data[offset + 2] & 0x01) << 2;
- // byte 3
- adtsChannelConfig |= (data[offset + 3] & 0xc0) >>> 6;
- logger.log("manifest codec:" + audioCodec + ", ADTS type:" + adtsObjectType + ", samplingIndex:" + adtsSamplingIndex);
- // firefox: freq less than 24kHz = AAC SBR (HE-AAC)
- if (/firefox/i.test(userAgent)) {
- if (adtsSamplingIndex >= 6) {
- adtsObjectType = 5;
- config = new Array(4);
- // HE-AAC uses SBR (Spectral Band Replication) , high frequencies are constructed from low frequencies
- // there is a factor 2 between frame sample rate and output sample rate
- // multiply frequency by 2 (see table below, equivalent to substract 3)
- adtsExtensionSamplingIndex = adtsSamplingIndex - 3;
- } else {
- adtsObjectType = 2;
- config = new Array(2);
- adtsExtensionSamplingIndex = adtsSamplingIndex;
- }
- // Android : always use AAC
- } else if (userAgent.indexOf('android') !== -1) {
- adtsObjectType = 2;
- config = new Array(2);
- adtsExtensionSamplingIndex = adtsSamplingIndex;
- } else {
- /* for other browsers (Chrome/Vivaldi/Opera ...)
- always force audio type to be HE-AAC SBR, as some browsers do not support audio codec switch properly (like Chrome ...)
- */
- adtsObjectType = 5;
- config = new Array(4);
- // if (manifest codec is HE-AAC or HE-AACv2) OR (manifest codec not specified AND frequency less than 24kHz)
- if (audioCodec && (audioCodec.indexOf('mp4a.40.29') !== -1 || audioCodec.indexOf('mp4a.40.5') !== -1) || !audioCodec && adtsSamplingIndex >= 6) {
- // HE-AAC uses SBR (Spectral Band Replication) , high frequencies are constructed from low frequencies
- // there is a factor 2 between frame sample rate and output sample rate
- // multiply frequency by 2 (see table below, equivalent to substract 3)
- adtsExtensionSamplingIndex = adtsSamplingIndex - 3;
- } else {
- // if (manifest codec is AAC) AND (frequency less than 24kHz AND nb channel is 1) OR (manifest codec not specified and mono audio)
- // Chrome fails to play back with low frequency AAC LC mono when initialized with HE-AAC. This is not a problem with stereo.
- if (audioCodec && audioCodec.indexOf('mp4a.40.2') !== -1 && (adtsSamplingIndex >= 6 && adtsChannelConfig === 1 || /vivaldi/i.test(userAgent)) || !audioCodec && adtsChannelConfig === 1) {
- adtsObjectType = 2;
- config = new Array(2);
- }
- adtsExtensionSamplingIndex = adtsSamplingIndex;
- }
- }
- /* refer to http://wiki.multimedia.cx/index.php?title=MPEG-4_Audio#Audio_Specific_Config
- ISO 14496-3 (AAC).pdf - Table 1.13 — Syntax of AudioSpecificConfig()
- Audio Profile / Audio Object Type
- 0: Null
- 1: AAC Main
- 2: AAC LC (Low Complexity)
- 3: AAC SSR (Scalable Sample Rate)
- 4: AAC LTP (Long Term Prediction)
- 5: SBR (Spectral Band Replication)
- 6: AAC Scalable
- sampling freq
- 0: 96000 Hz
- 1: 88200 Hz
- 2: 64000 Hz
- 3: 48000 Hz
- 4: 44100 Hz
- 5: 32000 Hz
- 6: 24000 Hz
- 7: 22050 Hz
- 8: 16000 Hz
- 9: 12000 Hz
- 10: 11025 Hz
- 11: 8000 Hz
- 12: 7350 Hz
- 13: Reserved
- 14: Reserved
- 15: frequency is written explictly
- Channel Configurations
- These are the channel configurations:
- 0: Defined in AOT Specifc Config
- 1: 1 channel: front-center
- 2: 2 channels: front-left, front-right
- */
- // audioObjectType = profile => profile, the MPEG-4 Audio Object Type minus 1
- config[0] = adtsObjectType << 3;
- // samplingFrequencyIndex
- config[0] |= (adtsSamplingIndex & 0x0e) >> 1;
- config[1] |= (adtsSamplingIndex & 0x01) << 7;
- // channelConfiguration
- config[1] |= adtsChannelConfig << 3;
- if (adtsObjectType === 5) {
- // adtsExtensionSamplingIndex
- config[1] |= (adtsExtensionSamplingIndex & 0x0e) >> 1;
- config[2] = (adtsExtensionSamplingIndex & 0x01) << 7;
- // adtsObjectType (force to 2, chrome is checking that object type is less than 5 ???
- // https://chromium.googlesource.com/chromium/src.git/+/master/media/formats/mp4/aac.cc
- config[2] |= 2 << 2;
- config[3] = 0;
- }
- return {
- config: config,
- samplerate: adtsSamplingRates[adtsSamplingIndex],
- channelCount: adtsChannelConfig,
- codec: 'mp4a.40.' + adtsObjectType,
- manifestCodec: manifestCodec
- };
- }
- function isHeaderPattern$1(data, offset) {
- return data[offset] === 0xff && (data[offset + 1] & 0xf6) === 0xf0;
- }
- function getHeaderLength(data, offset) {
- return data[offset + 1] & 0x01 ? 7 : 9;
- }
- function getFullFrameLength(data, offset) {
- return (data[offset + 3] & 0x03) << 11 | data[offset + 4] << 3 | (data[offset + 5] & 0xe0) >>> 5;
- }
- function canGetFrameLength(data, offset) {
- return offset + 5 < data.length;
- }
- function isHeader$1(data, offset) {
- // Look for ADTS header | 1111 1111 | 1111 X00X | where X can be either 0 or 1
- // Layer bits (position 14 and 15) in header should be always 0 for ADTS
- // More info https://wiki.multimedia.cx/index.php?title=ADTS
- return offset + 1 < data.length && isHeaderPattern$1(data, offset);
- }
- function canParse$1(data, offset) {
- return canGetFrameLength(data, offset) && isHeaderPattern$1(data, offset) && getFullFrameLength(data, offset) <= data.length - offset;
- }
- function probe$1(data, offset) {
- // same as isHeader but we also check that ADTS frame follows last ADTS frame
- // or end of data is reached
- if (isHeader$1(data, offset)) {
- // ADTS header Length
- var headerLength = getHeaderLength(data, offset);
- if (offset + headerLength >= data.length) {
- return false;
- }
- // ADTS frame Length
- var frameLength = getFullFrameLength(data, offset);
- if (frameLength <= headerLength) {
- return false;
- }
- var newOffset = offset + frameLength;
- return newOffset === data.length || isHeader$1(data, newOffset);
- }
- return false;
- }
- function initTrackConfig(track, observer, data, offset, audioCodec) {
- if (!track.samplerate) {
- var config = getAudioConfig(observer, data, offset, audioCodec);
- if (!config) {
- return;
- }
- track.config = config.config;
- track.samplerate = config.samplerate;
- track.channelCount = config.channelCount;
- track.codec = config.codec;
- track.manifestCodec = config.manifestCodec;
- logger.log("parsed codec:" + track.codec + ", rate:" + config.samplerate + ", channels:" + config.channelCount);
- }
- }
- function getFrameDuration(samplerate) {
- return 1024 * 90000 / samplerate;
- }
- function parseFrameHeader(data, offset) {
- // The protection skip bit tells us if we have 2 bytes of CRC data at the end of the ADTS header
- var headerLength = getHeaderLength(data, offset);
- if (offset + headerLength <= data.length) {
- // retrieve frame size
- var frameLength = getFullFrameLength(data, offset) - headerLength;
- if (frameLength > 0) {
- // logger.log(`AAC frame, offset/length/total/pts:${offset+headerLength}/${frameLength}/${data.byteLength}`);
- return {
- headerLength: headerLength,
- frameLength: frameLength
- };
- }
- }
- }
- function appendFrame$1(track, data, offset, pts, frameIndex) {
- var frameDuration = getFrameDuration(track.samplerate);
- var stamp = pts + frameIndex * frameDuration;
- var header = parseFrameHeader(data, offset);
- var unit;
- if (header) {
- var frameLength = header.frameLength,
- headerLength = header.headerLength;
- var _length = headerLength + frameLength;
- var missing = Math.max(0, offset + _length - data.length);
- // logger.log(`AAC frame ${frameIndex}, pts:${stamp} length@offset/total: ${frameLength}@${offset+headerLength}/${data.byteLength} missing: ${missing}`);
- if (missing) {
- unit = new Uint8Array(_length - headerLength);
- unit.set(data.subarray(offset + headerLength, data.length), 0);
- } else {
- unit = data.subarray(offset + headerLength, offset + _length);
- }
- var _sample = {
- unit: unit,
- pts: stamp
- };
- if (!missing) {
- track.samples.push(_sample);
- }
- return {
- sample: _sample,
- length: _length,
- missing: missing
- };
- }
- // overflow incomplete header
- var length = data.length - offset;
- unit = new Uint8Array(length);
- unit.set(data.subarray(offset, data.length), 0);
- var sample = {
- unit: unit,
- pts: stamp
- };
- return {
- sample: sample,
- length: length,
- missing: -1
- };
- }
-
- /**
- * MPEG parser helper
- */
-
- var chromeVersion$1 = null;
- var BitratesMap = [32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160];
- var SamplingRateMap = [44100, 48000, 32000, 22050, 24000, 16000, 11025, 12000, 8000];
- var SamplesCoefficients = [
- // MPEG 2.5
- [0,
- // Reserved
- 72,
- // Layer3
- 144,
- // Layer2
- 12 // Layer1
- ],
- // Reserved
- [0,
- // Reserved
- 0,
- // Layer3
- 0,
- // Layer2
- 0 // Layer1
- ],
- // MPEG 2
- [0,
- // Reserved
- 72,
- // Layer3
- 144,
- // Layer2
- 12 // Layer1
- ],
- // MPEG 1
- [0,
- // Reserved
- 144,
- // Layer3
- 144,
- // Layer2
- 12 // Layer1
- ]];
- var BytesInSlot = [0,
- // Reserved
- 1,
- // Layer3
- 1,
- // Layer2
- 4 // Layer1
- ];
- function appendFrame(track, data, offset, pts, frameIndex) {
- // Using http://www.datavoyage.com/mpgscript/mpeghdr.htm as a reference
- if (offset + 24 > data.length) {
- return;
- }
- var header = parseHeader(data, offset);
- if (header && offset + header.frameLength <= data.length) {
- var frameDuration = header.samplesPerFrame * 90000 / header.sampleRate;
- var stamp = pts + frameIndex * frameDuration;
- var sample = {
- unit: data.subarray(offset, offset + header.frameLength),
- pts: stamp,
- dts: stamp
- };
- track.config = [];
- track.channelCount = header.channelCount;
- track.samplerate = header.sampleRate;
- track.samples.push(sample);
- return {
- sample: sample,
- length: header.frameLength,
- missing: 0
- };
- }
- }
- function parseHeader(data, offset) {
- var mpegVersion = data[offset + 1] >> 3 & 3;
- var mpegLayer = data[offset + 1] >> 1 & 3;
- var bitRateIndex = data[offset + 2] >> 4 & 15;
- var sampleRateIndex = data[offset + 2] >> 2 & 3;
- if (mpegVersion !== 1 && bitRateIndex !== 0 && bitRateIndex !== 15 && sampleRateIndex !== 3) {
- var paddingBit = data[offset + 2] >> 1 & 1;
- var channelMode = data[offset + 3] >> 6;
- var columnInBitrates = mpegVersion === 3 ? 3 - mpegLayer : mpegLayer === 3 ? 3 : 4;
- var bitRate = BitratesMap[columnInBitrates * 14 + bitRateIndex - 1] * 1000;
- var columnInSampleRates = mpegVersion === 3 ? 0 : mpegVersion === 2 ? 1 : 2;
- var sampleRate = SamplingRateMap[columnInSampleRates * 3 + sampleRateIndex];
- var channelCount = channelMode === 3 ? 1 : 2; // If bits of channel mode are `11` then it is a single channel (Mono)
- var sampleCoefficient = SamplesCoefficients[mpegVersion][mpegLayer];
- var bytesInSlot = BytesInSlot[mpegLayer];
- var samplesPerFrame = sampleCoefficient * 8 * bytesInSlot;
- var frameLength = Math.floor(sampleCoefficient * bitRate / sampleRate + paddingBit) * bytesInSlot;
- if (chromeVersion$1 === null) {
- var userAgent = navigator.userAgent || '';
- var result = userAgent.match(/Chrome\/(\d+)/i);
- chromeVersion$1 = result ? parseInt(result[1]) : 0;
- }
- var needChromeFix = !!chromeVersion$1 && chromeVersion$1 <= 87;
- if (needChromeFix && mpegLayer === 2 && bitRate >= 224000 && channelMode === 0) {
- // Work around bug in Chromium by setting channelMode to dual-channel (01) instead of stereo (00)
- data[offset + 3] = data[offset + 3] | 0x80;
- }
- return {
- sampleRate: sampleRate,
- channelCount: channelCount,
- frameLength: frameLength,
- samplesPerFrame: samplesPerFrame
- };
- }
- }
- function isHeaderPattern(data, offset) {
- return data[offset] === 0xff && (data[offset + 1] & 0xe0) === 0xe0 && (data[offset + 1] & 0x06) !== 0x00;
- }
- function isHeader(data, offset) {
- // Look for MPEG header | 1111 1111 | 111X XYZX | where X can be either 0 or 1 and Y or Z should be 1
- // Layer bits (position 14 and 15) in header should be always different from 0 (Layer I or Layer II or Layer III)
- // More info http://www.mp3-tech.org/programmer/frame_header.html
- return offset + 1 < data.length && isHeaderPattern(data, offset);
- }
- function canParse(data, offset) {
- var headerSize = 4;
- return isHeaderPattern(data, offset) && headerSize <= data.length - offset;
- }
- function probe(data, offset) {
- // same as isHeader but we also check that MPEG frame follows last MPEG frame
- // or end of data is reached
- if (offset + 1 < data.length && isHeaderPattern(data, offset)) {
- // MPEG header Length
- var headerLength = 4;
- // MPEG frame Length
- var header = parseHeader(data, offset);
- var frameLength = headerLength;
- if (header != null && header.frameLength) {
- frameLength = header.frameLength;
- }
- var newOffset = offset + frameLength;
- return newOffset === data.length || isHeader(data, newOffset);
- }
- return false;
- }
-
- var AACDemuxer = /*#__PURE__*/function (_BaseAudioDemuxer) {
- _inheritsLoose(AACDemuxer, _BaseAudioDemuxer);
- function AACDemuxer(observer, config) {
- var _this;
- _this = _BaseAudioDemuxer.call(this) || this;
- _this.observer = void 0;
- _this.config = void 0;
- _this.observer = observer;
- _this.config = config;
- return _this;
- }
- var _proto = AACDemuxer.prototype;
- _proto.resetInitSegment = function resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration) {
- _BaseAudioDemuxer.prototype.resetInitSegment.call(this, initSegment, audioCodec, videoCodec, trackDuration);
- this._audioTrack = {
- container: 'audio/adts',
- type: 'audio',
- id: 2,
- pid: -1,
- sequenceNumber: 0,
- segmentCodec: 'aac',
- samples: [],
- manifestCodec: audioCodec,
- duration: trackDuration,
- inputTimeScale: 90000,
- dropped: 0
- };
- }
-
- // Source for probe info - https://wiki.multimedia.cx/index.php?title=ADTS
- ;
- AACDemuxer.probe = function probe$2(data) {
- if (!data) {
- return false;
- }
-
- // Check for the ADTS sync word
- // Look for ADTS header | 1111 1111 | 1111 X00X | where X can be either 0 or 1
- // Layer bits (position 14 and 15) in header should be always 0 for ADTS
- // More info https://wiki.multimedia.cx/index.php?title=ADTS
- var id3Data = getID3Data(data, 0);
- var offset = (id3Data == null ? void 0 : id3Data.length) || 0;
- if (probe(data, offset)) {
- return false;
- }
- for (var length = data.length; offset < length; offset++) {
- if (probe$1(data, offset)) {
- logger.log('ADTS sync word found !');
- return true;
- }
- }
- return false;
- };
- _proto.canParse = function canParse(data, offset) {
- return canParse$1(data, offset);
- };
- _proto.appendFrame = function appendFrame(track, data, offset) {
- initTrackConfig(track, this.observer, data, offset, track.manifestCodec);
- var frame = appendFrame$1(track, data, offset, this.basePTS, this.frameIndex);
- if (frame && frame.missing === 0) {
- return frame;
- }
- };
- return AACDemuxer;
- }(BaseAudioDemuxer);
-
- var emsgSchemePattern = /\/emsg[-/]ID3/i;
- var MP4Demuxer = /*#__PURE__*/function () {
- function MP4Demuxer(observer, config) {
- this.remainderData = null;
- this.timeOffset = 0;
- this.config = void 0;
- this.videoTrack = void 0;
- this.audioTrack = void 0;
- this.id3Track = void 0;
- this.txtTrack = void 0;
- this.config = config;
- }
- var _proto = MP4Demuxer.prototype;
- _proto.resetTimeStamp = function resetTimeStamp() {};
- _proto.resetInitSegment = function resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration) {
- var videoTrack = this.videoTrack = dummyTrack('video', 1);
- var audioTrack = this.audioTrack = dummyTrack('audio', 1);
- var captionTrack = this.txtTrack = dummyTrack('text', 1);
- this.id3Track = dummyTrack('id3', 1);
- this.timeOffset = 0;
- if (!(initSegment != null && initSegment.byteLength)) {
- return;
- }
- var initData = parseInitSegment(initSegment);
- if (initData.video) {
- var _initData$video = initData.video,
- id = _initData$video.id,
- timescale = _initData$video.timescale,
- codec = _initData$video.codec;
- videoTrack.id = id;
- videoTrack.timescale = captionTrack.timescale = timescale;
- videoTrack.codec = codec;
- }
- if (initData.audio) {
- var _initData$audio = initData.audio,
- _id = _initData$audio.id,
- _timescale = _initData$audio.timescale,
- _codec = _initData$audio.codec;
- audioTrack.id = _id;
- audioTrack.timescale = _timescale;
- audioTrack.codec = _codec;
- }
- captionTrack.id = RemuxerTrackIdConfig.text;
- videoTrack.sampleDuration = 0;
- videoTrack.duration = audioTrack.duration = trackDuration;
- };
- _proto.resetContiguity = function resetContiguity() {
- this.remainderData = null;
- };
- MP4Demuxer.probe = function probe(data) {
- return hasMoofData(data);
- };
- _proto.demux = function demux(data, timeOffset) {
- this.timeOffset = timeOffset;
- // Load all data into the avc track. The CMAF remuxer will look for the data in the samples object; the rest of the fields do not matter
- var videoSamples = data;
- var videoTrack = this.videoTrack;
- var textTrack = this.txtTrack;
- if (this.config.progressive) {
- // Split the bytestream into two ranges: one encompassing all data up until the start of the last moof, and everything else.
- // This is done to guarantee that we're sending valid data to MSE - when demuxing progressively, we have no guarantee
- // that the fetch loader gives us flush moof+mdat pairs. If we push jagged data to MSE, it will throw an exception.
- if (this.remainderData) {
- videoSamples = appendUint8Array(this.remainderData, data);
- }
- var segmentedData = segmentValidRange(videoSamples);
- this.remainderData = segmentedData.remainder;
- videoTrack.samples = segmentedData.valid || new Uint8Array();
- } else {
- videoTrack.samples = videoSamples;
- }
- var id3Track = this.extractID3Track(videoTrack, timeOffset);
- textTrack.samples = parseSamples(timeOffset, videoTrack);
- return {
- videoTrack: videoTrack,
- audioTrack: this.audioTrack,
- id3Track: id3Track,
- textTrack: this.txtTrack
- };
- };
- _proto.flush = function flush() {
- var timeOffset = this.timeOffset;
- var videoTrack = this.videoTrack;
- var textTrack = this.txtTrack;
- videoTrack.samples = this.remainderData || new Uint8Array();
- this.remainderData = null;
- var id3Track = this.extractID3Track(videoTrack, this.timeOffset);
- textTrack.samples = parseSamples(timeOffset, videoTrack);
- return {
- videoTrack: videoTrack,
- audioTrack: dummyTrack(),
- id3Track: id3Track,
- textTrack: dummyTrack()
- };
- };
- _proto.extractID3Track = function extractID3Track(videoTrack, timeOffset) {
- var id3Track = this.id3Track;
- if (videoTrack.samples.length) {
- var emsgs = findBox(videoTrack.samples, ['emsg']);
- if (emsgs) {
- emsgs.forEach(function (data) {
- var emsgInfo = parseEmsg(data);
- if (emsgSchemePattern.test(emsgInfo.schemeIdUri)) {
- var pts = isFiniteNumber(emsgInfo.presentationTime) ? emsgInfo.presentationTime / emsgInfo.timeScale : timeOffset + emsgInfo.presentationTimeDelta / emsgInfo.timeScale;
- var duration = emsgInfo.eventDuration === 0xffffffff ? Number.POSITIVE_INFINITY : emsgInfo.eventDuration / emsgInfo.timeScale;
- // Safari takes anything <= 0.001 seconds and maps it to Infinity
- if (duration <= 0.001) {
- duration = Number.POSITIVE_INFINITY;
- }
- var payload = emsgInfo.payload;
- id3Track.samples.push({
- data: payload,
- len: payload.byteLength,
- dts: pts,
- pts: pts,
- type: MetadataSchema.emsg,
- duration: duration
- });
- }
- });
- }
- }
- return id3Track;
- };
- _proto.demuxSampleAes = function demuxSampleAes(data, keyData, timeOffset) {
- return Promise.reject(new Error('The MP4 demuxer does not support SAMPLE-AES decryption'));
- };
- _proto.destroy = function destroy() {};
- return MP4Demuxer;
- }();
-
- var getAudioBSID = function getAudioBSID(data, offset) {
- // check the bsid to confirm ac-3 | ec-3
- var bsid = 0;
- var numBits = 5;
- offset += numBits;
- var temp = new Uint32Array(1); // unsigned 32 bit for temporary storage
- var mask = new Uint32Array(1); // unsigned 32 bit mask value
- var _byte = new Uint8Array(1); // unsigned 8 bit for temporary storage
- while (numBits > 0) {
- _byte[0] = data[offset];
- // read remaining bits, upto 8 bits at a time
- var bits = Math.min(numBits, 8);
- var shift = 8 - bits;
- mask[0] = 0xff000000 >>> 24 + shift << shift;
- temp[0] = (_byte[0] & mask[0]) >> shift;
- bsid = !bsid ? temp[0] : bsid << bits | temp[0];
- offset += 1;
- numBits -= bits;
- }
- return bsid;
- };
-
- var AC3Demuxer = /*#__PURE__*/function (_BaseAudioDemuxer) {
- _inheritsLoose(AC3Demuxer, _BaseAudioDemuxer);
- function AC3Demuxer(observer) {
- var _this;
- _this = _BaseAudioDemuxer.call(this) || this;
- _this.observer = void 0;
- _this.observer = observer;
- return _this;
- }
- var _proto = AC3Demuxer.prototype;
- _proto.resetInitSegment = function resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration) {
- _BaseAudioDemuxer.prototype.resetInitSegment.call(this, initSegment, audioCodec, videoCodec, trackDuration);
- this._audioTrack = {
- container: 'audio/ac-3',
- type: 'audio',
- id: 2,
- pid: -1,
- sequenceNumber: 0,
- segmentCodec: 'ac3',
- samples: [],
- manifestCodec: audioCodec,
- duration: trackDuration,
- inputTimeScale: 90000,
- dropped: 0
- };
- };
- _proto.canParse = function canParse(data, offset) {
- return offset + 64 < data.length;
- };
- _proto.appendFrame = function appendFrame(track, data, offset) {
- var frameLength = _appendFrame(track, data, offset, this.basePTS, this.frameIndex);
- if (frameLength !== -1) {
- var sample = track.samples[track.samples.length - 1];
- return {
- sample: sample,
- length: frameLength,
- missing: 0
- };
- }
- };
- AC3Demuxer.probe = function probe(data) {
- if (!data) {
- return false;
- }
- var id3Data = getID3Data(data, 0);
- if (!id3Data) {
- return false;
- }
-
- // look for the ac-3 sync bytes
- var offset = id3Data.length;
- if (data[offset] === 0x0b && data[offset + 1] === 0x77 && getTimeStamp(id3Data) !== undefined &&
- // check the bsid to confirm ac-3
- getAudioBSID(data, offset) < 16) {
- return true;
- }
- return false;
- };
- return AC3Demuxer;
- }(BaseAudioDemuxer);
- function _appendFrame(track, data, start, pts, frameIndex) {
- if (start + 8 > data.length) {
- return -1; // not enough bytes left
- }
- if (data[start] !== 0x0b || data[start + 1] !== 0x77) {
- return -1; // invalid magic
- }
-
- // get sample rate
- var samplingRateCode = data[start + 4] >> 6;
- if (samplingRateCode >= 3) {
- return -1; // invalid sampling rate
- }
- var samplingRateMap = [48000, 44100, 32000];
- var sampleRate = samplingRateMap[samplingRateCode];
-
- // get frame size
- var frameSizeCode = data[start + 4] & 0x3f;
- var frameSizeMap = [64, 69, 96, 64, 70, 96, 80, 87, 120, 80, 88, 120, 96, 104, 144, 96, 105, 144, 112, 121, 168, 112, 122, 168, 128, 139, 192, 128, 140, 192, 160, 174, 240, 160, 175, 240, 192, 208, 288, 192, 209, 288, 224, 243, 336, 224, 244, 336, 256, 278, 384, 256, 279, 384, 320, 348, 480, 320, 349, 480, 384, 417, 576, 384, 418, 576, 448, 487, 672, 448, 488, 672, 512, 557, 768, 512, 558, 768, 640, 696, 960, 640, 697, 960, 768, 835, 1152, 768, 836, 1152, 896, 975, 1344, 896, 976, 1344, 1024, 1114, 1536, 1024, 1115, 1536, 1152, 1253, 1728, 1152, 1254, 1728, 1280, 1393, 1920, 1280, 1394, 1920];
- var frameLength = frameSizeMap[frameSizeCode * 3 + samplingRateCode] * 2;
- if (start + frameLength > data.length) {
- return -1;
- }
-
- // get channel count
- var channelMode = data[start + 6] >> 5;
- var skipCount = 0;
- if (channelMode === 2) {
- skipCount += 2;
- } else {
- if (channelMode & 1 && channelMode !== 1) {
- skipCount += 2;
- }
- if (channelMode & 4) {
- skipCount += 2;
- }
- }
- var lfeon = (data[start + 6] << 8 | data[start + 7]) >> 12 - skipCount & 1;
- var channelsMap = [2, 1, 2, 3, 3, 4, 4, 5];
- var channelCount = channelsMap[channelMode] + lfeon;
-
- // build dac3 box
- var bsid = data[start + 5] >> 3;
- var bsmod = data[start + 5] & 7;
- var config = new Uint8Array([samplingRateCode << 6 | bsid << 1 | bsmod >> 2, (bsmod & 3) << 6 | channelMode << 3 | lfeon << 2 | frameSizeCode >> 4, frameSizeCode << 4 & 0xe0]);
- var frameDuration = 1536 / sampleRate * 90000;
- var stamp = pts + frameIndex * frameDuration;
- var unit = data.subarray(start, start + frameLength);
- track.config = config;
- track.channelCount = channelCount;
- track.samplerate = sampleRate;
- track.samples.push({
- unit: unit,
- pts: stamp
- });
- return frameLength;
- }
-
- var BaseVideoParser = /*#__PURE__*/function () {
- function BaseVideoParser() {
- this.VideoSample = null;
- }
- var _proto = BaseVideoParser.prototype;
- _proto.createVideoSample = function createVideoSample(key, pts, dts, debug) {
- return {
- key: key,
- frame: false,
- pts: pts,
- dts: dts,
- units: [],
- debug: debug,
- length: 0
- };
- };
- _proto.getLastNalUnit = function getLastNalUnit(samples) {
- var _VideoSample;
- var VideoSample = this.VideoSample;
- var lastUnit;
- // try to fallback to previous sample if current one is empty
- if (!VideoSample || VideoSample.units.length === 0) {
- VideoSample = samples[samples.length - 1];
- }
- if ((_VideoSample = VideoSample) != null && _VideoSample.units) {
- var units = VideoSample.units;
- lastUnit = units[units.length - 1];
- }
- return lastUnit;
- };
- _proto.pushAccessUnit = function pushAccessUnit(VideoSample, videoTrack) {
- if (VideoSample.units.length && VideoSample.frame) {
- // if sample does not have PTS/DTS, patch with last sample PTS/DTS
- if (VideoSample.pts === undefined) {
- var samples = videoTrack.samples;
- var nbSamples = samples.length;
- if (nbSamples) {
- var lastSample = samples[nbSamples - 1];
- VideoSample.pts = lastSample.pts;
- VideoSample.dts = lastSample.dts;
- } else {
- // dropping samples, no timestamp found
- videoTrack.dropped++;
- return;
- }
- }
- videoTrack.samples.push(VideoSample);
- }
- if (VideoSample.debug.length) {
- logger.log(VideoSample.pts + '/' + VideoSample.dts + ':' + VideoSample.debug);
- }
- };
- return BaseVideoParser;
- }();
-
- /**
- * Parser for exponential Golomb codes, a variable-bitwidth number encoding scheme used by h264.
- */
-
- var ExpGolomb = /*#__PURE__*/function () {
- function ExpGolomb(data) {
- this.data = void 0;
- this.bytesAvailable = void 0;
- this.word = void 0;
- this.bitsAvailable = void 0;
- this.data = data;
- // the number of bytes left to examine in this.data
- this.bytesAvailable = data.byteLength;
- // the current word being examined
- this.word = 0; // :uint
- // the number of bits left to examine in the current word
- this.bitsAvailable = 0; // :uint
- }
-
- // ():void
- var _proto = ExpGolomb.prototype;
- _proto.loadWord = function loadWord() {
- var data = this.data;
- var bytesAvailable = this.bytesAvailable;
- var position = data.byteLength - bytesAvailable;
- var workingBytes = new Uint8Array(4);
- var availableBytes = Math.min(4, bytesAvailable);
- if (availableBytes === 0) {
- throw new Error('no bytes available');
- }
- workingBytes.set(data.subarray(position, position + availableBytes));
- this.word = new DataView(workingBytes.buffer).getUint32(0);
- // track the amount of this.data that has been processed
- this.bitsAvailable = availableBytes * 8;
- this.bytesAvailable -= availableBytes;
- }
-
- // (count:int):void
- ;
- _proto.skipBits = function skipBits(count) {
- var skipBytes; // :int
- count = Math.min(count, this.bytesAvailable * 8 + this.bitsAvailable);
- if (this.bitsAvailable > count) {
- this.word <<= count;
- this.bitsAvailable -= count;
- } else {
- count -= this.bitsAvailable;
- skipBytes = count >> 3;
- count -= skipBytes << 3;
- this.bytesAvailable -= skipBytes;
- this.loadWord();
- this.word <<= count;
- this.bitsAvailable -= count;
- }
- }
-
- // (size:int):uint
- ;
- _proto.readBits = function readBits(size) {
- var bits = Math.min(this.bitsAvailable, size); // :uint
- var valu = this.word >>> 32 - bits; // :uint
- if (size > 32) {
- logger.error('Cannot read more than 32 bits at a time');
- }
- this.bitsAvailable -= bits;
- if (this.bitsAvailable > 0) {
- this.word <<= bits;
- } else if (this.bytesAvailable > 0) {
- this.loadWord();
- } else {
- throw new Error('no bits available');
- }
- bits = size - bits;
- if (bits > 0 && this.bitsAvailable) {
- return valu << bits | this.readBits(bits);
- } else {
- return valu;
- }
- }
-
- // ():uint
- ;
- _proto.skipLZ = function skipLZ() {
- var leadingZeroCount; // :uint
- for (leadingZeroCount = 0; leadingZeroCount < this.bitsAvailable; ++leadingZeroCount) {
- if ((this.word & 0x80000000 >>> leadingZeroCount) !== 0) {
- // the first bit of working word is 1
- this.word <<= leadingZeroCount;
- this.bitsAvailable -= leadingZeroCount;
- return leadingZeroCount;
- }
- }
- // we exhausted word and still have not found a 1
- this.loadWord();
- return leadingZeroCount + this.skipLZ();
- }
-
- // ():void
- ;
- _proto.skipUEG = function skipUEG() {
- this.skipBits(1 + this.skipLZ());
- }
-
- // ():void
- ;
- _proto.skipEG = function skipEG() {
- this.skipBits(1 + this.skipLZ());
- }
-
- // ():uint
- ;
- _proto.readUEG = function readUEG() {
- var clz = this.skipLZ(); // :uint
- return this.readBits(clz + 1) - 1;
- }
-
- // ():int
- ;
- _proto.readEG = function readEG() {
- var valu = this.readUEG(); // :int
- if (0x01 & valu) {
- // the number is odd if the low order bit is set
- return 1 + valu >>> 1; // add 1 to make it even, and divide by 2
- } else {
- return -1 * (valu >>> 1); // divide by two then make it negative
- }
- }
-
- // Some convenience functions
- // :Boolean
- ;
- _proto.readBoolean = function readBoolean() {
- return this.readBits(1) === 1;
- }
-
- // ():int
- ;
- _proto.readUByte = function readUByte() {
- return this.readBits(8);
- }
-
- // ():int
- ;
- _proto.readUShort = function readUShort() {
- return this.readBits(16);
- }
-
- // ():int
- ;
- _proto.readUInt = function readUInt() {
- return this.readBits(32);
- }
-
- /**
- * Advance the ExpGolomb decoder past a scaling list. The scaling
- * list is optionally transmitted as part of a sequence parameter
- * set and is not relevant to transmuxing.
- * @param count the number of entries in this scaling list
- * @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1
- */;
- _proto.skipScalingList = function skipScalingList(count) {
- var lastScale = 8;
- var nextScale = 8;
- var deltaScale;
- for (var j = 0; j < count; j++) {
- if (nextScale !== 0) {
- deltaScale = this.readEG();
- nextScale = (lastScale + deltaScale + 256) % 256;
- }
- lastScale = nextScale === 0 ? lastScale : nextScale;
- }
- }
-
- /**
- * Read a sequence parameter set and return some interesting video
- * properties. A sequence parameter set is the H264 metadata that
- * describes the properties of upcoming video frames.
- * @returns an object with configuration parsed from the
- * sequence parameter set, including the dimensions of the
- * associated video frames.
- */;
- _proto.readSPS = function readSPS() {
- var frameCropLeftOffset = 0;
- var frameCropRightOffset = 0;
- var frameCropTopOffset = 0;
- var frameCropBottomOffset = 0;
- var numRefFramesInPicOrderCntCycle;
- var scalingListCount;
- var i;
- var readUByte = this.readUByte.bind(this);
- var readBits = this.readBits.bind(this);
- var readUEG = this.readUEG.bind(this);
- var readBoolean = this.readBoolean.bind(this);
- var skipBits = this.skipBits.bind(this);
- var skipEG = this.skipEG.bind(this);
- var skipUEG = this.skipUEG.bind(this);
- var skipScalingList = this.skipScalingList.bind(this);
- readUByte();
- var profileIdc = readUByte(); // profile_idc
- readBits(5); // profileCompat constraint_set[0-4]_flag, u(5)
- skipBits(3); // reserved_zero_3bits u(3),
- readUByte(); // level_idc u(8)
- skipUEG(); // seq_parameter_set_id
- // some profiles have more optional data we don't need
- if (profileIdc === 100 || profileIdc === 110 || profileIdc === 122 || profileIdc === 244 || profileIdc === 44 || profileIdc === 83 || profileIdc === 86 || profileIdc === 118 || profileIdc === 128) {
- var chromaFormatIdc = readUEG();
- if (chromaFormatIdc === 3) {
- skipBits(1);
- } // separate_colour_plane_flag
-
- skipUEG(); // bit_depth_luma_minus8
- skipUEG(); // bit_depth_chroma_minus8
- skipBits(1); // qpprime_y_zero_transform_bypass_flag
- if (readBoolean()) {
- // seq_scaling_matrix_present_flag
- scalingListCount = chromaFormatIdc !== 3 ? 8 : 12;
- for (i = 0; i < scalingListCount; i++) {
- if (readBoolean()) {
- // seq_scaling_list_present_flag[ i ]
- if (i < 6) {
- skipScalingList(16);
- } else {
- skipScalingList(64);
- }
- }
- }
- }
- }
- skipUEG(); // log2_max_frame_num_minus4
- var picOrderCntType = readUEG();
- if (picOrderCntType === 0) {
- readUEG(); // log2_max_pic_order_cnt_lsb_minus4
- } else if (picOrderCntType === 1) {
- skipBits(1); // delta_pic_order_always_zero_flag
- skipEG(); // offset_for_non_ref_pic
- skipEG(); // offset_for_top_to_bottom_field
- numRefFramesInPicOrderCntCycle = readUEG();
- for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) {
- skipEG();
- } // offset_for_ref_frame[ i ]
- }
- skipUEG(); // max_num_ref_frames
- skipBits(1); // gaps_in_frame_num_value_allowed_flag
- var picWidthInMbsMinus1 = readUEG();
- var picHeightInMapUnitsMinus1 = readUEG();
- var frameMbsOnlyFlag = readBits(1);
- if (frameMbsOnlyFlag === 0) {
- skipBits(1);
- } // mb_adaptive_frame_field_flag
-
- skipBits(1); // direct_8x8_inference_flag
- if (readBoolean()) {
- // frame_cropping_flag
- frameCropLeftOffset = readUEG();
- frameCropRightOffset = readUEG();
- frameCropTopOffset = readUEG();
- frameCropBottomOffset = readUEG();
- }
- var pixelRatio = [1, 1];
- if (readBoolean()) {
- // vui_parameters_present_flag
- if (readBoolean()) {
- // aspect_ratio_info_present_flag
- var aspectRatioIdc = readUByte();
- switch (aspectRatioIdc) {
- case 1:
- pixelRatio = [1, 1];
- break;
- case 2:
- pixelRatio = [12, 11];
- break;
- case 3:
- pixelRatio = [10, 11];
- break;
- case 4:
- pixelRatio = [16, 11];
- break;
- case 5:
- pixelRatio = [40, 33];
- break;
- case 6:
- pixelRatio = [24, 11];
- break;
- case 7:
- pixelRatio = [20, 11];
- break;
- case 8:
- pixelRatio = [32, 11];
- break;
- case 9:
- pixelRatio = [80, 33];
- break;
- case 10:
- pixelRatio = [18, 11];
- break;
- case 11:
- pixelRatio = [15, 11];
- break;
- case 12:
- pixelRatio = [64, 33];
- break;
- case 13:
- pixelRatio = [160, 99];
- break;
- case 14:
- pixelRatio = [4, 3];
- break;
- case 15:
- pixelRatio = [3, 2];
- break;
- case 16:
- pixelRatio = [2, 1];
- break;
- case 255:
- {
- pixelRatio = [readUByte() << 8 | readUByte(), readUByte() << 8 | readUByte()];
- break;
- }
- }
- }
- }
- return {
- width: Math.ceil((picWidthInMbsMinus1 + 1) * 16 - frameCropLeftOffset * 2 - frameCropRightOffset * 2),
- height: (2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16 - (frameMbsOnlyFlag ? 2 : 4) * (frameCropTopOffset + frameCropBottomOffset),
- pixelRatio: pixelRatio
- };
- };
- _proto.readSliceType = function readSliceType() {
- // skip NALu type
- this.readUByte();
- // discard first_mb_in_slice
- this.readUEG();
- // return slice_type
- return this.readUEG();
- };
- return ExpGolomb;
- }();
-
- var AvcVideoParser = /*#__PURE__*/function (_BaseVideoParser) {
- _inheritsLoose(AvcVideoParser, _BaseVideoParser);
- function AvcVideoParser() {
- return _BaseVideoParser.apply(this, arguments) || this;
- }
- var _proto = AvcVideoParser.prototype;
- _proto.parseAVCPES = function parseAVCPES(track, textTrack, pes, last, duration) {
- var _this = this;
- var units = this.parseAVCNALu(track, pes.data);
- var VideoSample = this.VideoSample;
- var push;
- var spsfound = false;
- // free pes.data to save up some memory
- pes.data = null;
-
- // if new NAL units found and last sample still there, let's push ...
- // this helps parsing streams with missing AUD (only do this if AUD never found)
- if (VideoSample && units.length && !track.audFound) {
- this.pushAccessUnit(VideoSample, track);
- VideoSample = this.VideoSample = this.createVideoSample(false, pes.pts, pes.dts, '');
- }
- units.forEach(function (unit) {
- var _VideoSample2;
- switch (unit.type) {
- // NDR
- case 1:
- {
- var iskey = false;
- push = true;
- var data = unit.data;
- // only check slice type to detect KF in case SPS found in same packet (any keyframe is preceded by SPS ...)
- if (spsfound && data.length > 4) {
- // retrieve slice type by parsing beginning of NAL unit (follow H264 spec, slice_header definition) to detect keyframe embedded in NDR
- var sliceType = new ExpGolomb(data).readSliceType();
- // 2 : I slice, 4 : SI slice, 7 : I slice, 9: SI slice
- // SI slice : A slice that is coded using intra prediction only and using quantisation of the prediction samples.
- // An SI slice can be coded such that its decoded samples can be constructed identically to an SP slice.
- // I slice: A slice that is not an SI slice that is decoded using intra prediction only.
- // if (sliceType === 2 || sliceType === 7) {
- if (sliceType === 2 || sliceType === 4 || sliceType === 7 || sliceType === 9) {
- iskey = true;
- }
- }
- if (iskey) {
- var _VideoSample;
- // if we have non-keyframe data already, that cannot belong to the same frame as a keyframe, so force a push
- if ((_VideoSample = VideoSample) != null && _VideoSample.frame && !VideoSample.key) {
- _this.pushAccessUnit(VideoSample, track);
- VideoSample = _this.VideoSample = null;
- }
- }
- if (!VideoSample) {
- VideoSample = _this.VideoSample = _this.createVideoSample(true, pes.pts, pes.dts, '');
- }
- VideoSample.frame = true;
- VideoSample.key = iskey;
- break;
- // IDR
- }
- case 5:
- push = true;
- // handle PES not starting with AUD
- // if we have frame data already, that cannot belong to the same frame, so force a push
- if ((_VideoSample2 = VideoSample) != null && _VideoSample2.frame && !VideoSample.key) {
- _this.pushAccessUnit(VideoSample, track);
- VideoSample = _this.VideoSample = null;
- }
- if (!VideoSample) {
- VideoSample = _this.VideoSample = _this.createVideoSample(true, pes.pts, pes.dts, '');
- }
- VideoSample.key = true;
- VideoSample.frame = true;
- break;
- // SEI
- case 6:
- {
- push = true;
- parseSEIMessageFromNALu(unit.data, 1, pes.pts, textTrack.samples);
- break;
- // SPS
- }
- case 7:
- {
- var _track$pixelRatio, _track$pixelRatio2;
- push = true;
- spsfound = true;
- var sps = unit.data;
- var expGolombDecoder = new ExpGolomb(sps);
- var config = expGolombDecoder.readSPS();
- if (!track.sps || track.width !== config.width || track.height !== config.height || ((_track$pixelRatio = track.pixelRatio) == null ? void 0 : _track$pixelRatio[0]) !== config.pixelRatio[0] || ((_track$pixelRatio2 = track.pixelRatio) == null ? void 0 : _track$pixelRatio2[1]) !== config.pixelRatio[1]) {
- track.width = config.width;
- track.height = config.height;
- track.pixelRatio = config.pixelRatio;
- track.sps = [sps];
- track.duration = duration;
- var codecarray = sps.subarray(1, 4);
- var codecstring = 'avc1.';
- for (var i = 0; i < 3; i++) {
- var h = codecarray[i].toString(16);
- if (h.length < 2) {
- h = '0' + h;
- }
- codecstring += h;
- }
- track.codec = codecstring;
- }
- break;
- }
- // PPS
- case 8:
- push = true;
- track.pps = [unit.data];
- break;
- // AUD
- case 9:
- push = true;
- track.audFound = true;
- if (VideoSample) {
- _this.pushAccessUnit(VideoSample, track);
- }
- VideoSample = _this.VideoSample = _this.createVideoSample(false, pes.pts, pes.dts, '');
- break;
- // Filler Data
- case 12:
- push = true;
- break;
- default:
- push = false;
- if (VideoSample) {
- VideoSample.debug += 'unknown NAL ' + unit.type + ' ';
- }
- break;
- }
- if (VideoSample && push) {
- var _units = VideoSample.units;
- _units.push(unit);
- }
- });
- // if last PES packet, push samples
- if (last && VideoSample) {
- this.pushAccessUnit(VideoSample, track);
- this.VideoSample = null;
- }
- };
- _proto.parseAVCNALu = function parseAVCNALu(track, array) {
- var len = array.byteLength;
- var state = track.naluState || 0;
- var lastState = state;
- var units = [];
- var i = 0;
- var value;
- var overflow;
- var unitType;
- var lastUnitStart = -1;
- var lastUnitType = 0;
- // logger.log('PES:' + Hex.hexDump(array));
-
- if (state === -1) {
- // special use case where we found 3 or 4-byte start codes exactly at the end of previous PES packet
- lastUnitStart = 0;
- // NALu type is value read from offset 0
- lastUnitType = array[0] & 0x1f;
- state = 0;
- i = 1;
- }
- while (i < len) {
- value = array[i++];
- // optimization. state 0 and 1 are the predominant case. let's handle them outside of the switch/case
- if (!state) {
- state = value ? 0 : 1;
- continue;
- }
- if (state === 1) {
- state = value ? 0 : 2;
- continue;
- }
- // here we have state either equal to 2 or 3
- if (!value) {
- state = 3;
- } else if (value === 1) {
- overflow = i - state - 1;
- if (lastUnitStart >= 0) {
- var unit = {
- data: array.subarray(lastUnitStart, overflow),
- type: lastUnitType
- };
- // logger.log('pushing NALU, type/size:' + unit.type + '/' + unit.data.byteLength);
- units.push(unit);
- } else {
- // lastUnitStart is undefined => this is the first start code found in this PES packet
- // first check if start code delimiter is overlapping between 2 PES packets,
- // ie it started in last packet (lastState not zero)
- // and ended at the beginning of this PES packet (i <= 4 - lastState)
- var lastUnit = this.getLastNalUnit(track.samples);
- if (lastUnit) {
- if (lastState && i <= 4 - lastState) {
- // start delimiter overlapping between PES packets
- // strip start delimiter bytes from the end of last NAL unit
- // check if lastUnit had a state different from zero
- if (lastUnit.state) {
- // strip last bytes
- lastUnit.data = lastUnit.data.subarray(0, lastUnit.data.byteLength - lastState);
- }
- }
- // If NAL units are not starting right at the beginning of the PES packet, push preceding data into previous NAL unit.
-
- if (overflow > 0) {
- // logger.log('first NALU found with overflow:' + overflow);
- lastUnit.data = appendUint8Array(lastUnit.data, array.subarray(0, overflow));
- lastUnit.state = 0;
- }
- }
- }
- // check if we can read unit type
- if (i < len) {
- unitType = array[i] & 0x1f;
- // logger.log('find NALU @ offset:' + i + ',type:' + unitType);
- lastUnitStart = i;
- lastUnitType = unitType;
- state = 0;
- } else {
- // not enough byte to read unit type. let's read it on next PES parsing
- state = -1;
- }
- } else {
- state = 0;
- }
- }
- if (lastUnitStart >= 0 && state >= 0) {
- var _unit = {
- data: array.subarray(lastUnitStart, len),
- type: lastUnitType,
- state: state
- };
- units.push(_unit);
- // logger.log('pushing NALU, type/size/state:' + unit.type + '/' + unit.data.byteLength + '/' + state);
- }
- // no NALu found
- if (units.length === 0) {
- // append pes.data to previous NAL unit
- var _lastUnit = this.getLastNalUnit(track.samples);
- if (_lastUnit) {
- _lastUnit.data = appendUint8Array(_lastUnit.data, array);
- }
- }
- track.naluState = state;
- return units;
- };
- return AvcVideoParser;
- }(BaseVideoParser);
-
- /**
- * SAMPLE-AES decrypter
- */
-
- var SampleAesDecrypter = /*#__PURE__*/function () {
- function SampleAesDecrypter(observer, config, keyData) {
- this.keyData = void 0;
- this.decrypter = void 0;
- this.keyData = keyData;
- this.decrypter = new Decrypter(config, {
- removePKCS7Padding: false
- });
- }
- var _proto = SampleAesDecrypter.prototype;
- _proto.decryptBuffer = function decryptBuffer(encryptedData) {
- return this.decrypter.decrypt(encryptedData, this.keyData.key.buffer, this.keyData.iv.buffer);
- }
-
- // AAC - encrypt all full 16 bytes blocks starting from offset 16
- ;
- _proto.decryptAacSample = function decryptAacSample(samples, sampleIndex, callback) {
- var _this = this;
- var curUnit = samples[sampleIndex].unit;
- if (curUnit.length <= 16) {
- // No encrypted portion in this sample (first 16 bytes is not
- // encrypted, see https://developer.apple.com/library/archive/documentation/AudioVideo/Conceptual/HLS_Sample_Encryption/Encryption/Encryption.html),
- return;
- }
- var encryptedData = curUnit.subarray(16, curUnit.length - curUnit.length % 16);
- var encryptedBuffer = encryptedData.buffer.slice(encryptedData.byteOffset, encryptedData.byteOffset + encryptedData.length);
- this.decryptBuffer(encryptedBuffer).then(function (decryptedBuffer) {
- var decryptedData = new Uint8Array(decryptedBuffer);
- curUnit.set(decryptedData, 16);
- if (!_this.decrypter.isSync()) {
- _this.decryptAacSamples(samples, sampleIndex + 1, callback);
- }
- });
- };
- _proto.decryptAacSamples = function decryptAacSamples(samples, sampleIndex, callback) {
- for (;; sampleIndex++) {
- if (sampleIndex >= samples.length) {
- callback();
- return;
- }
- if (samples[sampleIndex].unit.length < 32) {
- continue;
- }
- this.decryptAacSample(samples, sampleIndex, callback);
- if (!this.decrypter.isSync()) {
- return;
- }
- }
- }
-
- // AVC - encrypt one 16 bytes block out of ten, starting from offset 32
- ;
- _proto.getAvcEncryptedData = function getAvcEncryptedData(decodedData) {
- var encryptedDataLen = Math.floor((decodedData.length - 48) / 160) * 16 + 16;
- var encryptedData = new Int8Array(encryptedDataLen);
- var outputPos = 0;
- for (var inputPos = 32; inputPos < decodedData.length - 16; inputPos += 160, outputPos += 16) {
- encryptedData.set(decodedData.subarray(inputPos, inputPos + 16), outputPos);
- }
- return encryptedData;
- };
- _proto.getAvcDecryptedUnit = function getAvcDecryptedUnit(decodedData, decryptedData) {
- var uint8DecryptedData = new Uint8Array(decryptedData);
- var inputPos = 0;
- for (var outputPos = 32; outputPos < decodedData.length - 16; outputPos += 160, inputPos += 16) {
- decodedData.set(uint8DecryptedData.subarray(inputPos, inputPos + 16), outputPos);
- }
- return decodedData;
- };
- _proto.decryptAvcSample = function decryptAvcSample(samples, sampleIndex, unitIndex, callback, curUnit) {
- var _this2 = this;
- var decodedData = discardEPB(curUnit.data);
- var encryptedData = this.getAvcEncryptedData(decodedData);
- this.decryptBuffer(encryptedData.buffer).then(function (decryptedBuffer) {
- curUnit.data = _this2.getAvcDecryptedUnit(decodedData, decryptedBuffer);
- if (!_this2.decrypter.isSync()) {
- _this2.decryptAvcSamples(samples, sampleIndex, unitIndex + 1, callback);
- }
- });
- };
- _proto.decryptAvcSamples = function decryptAvcSamples(samples, sampleIndex, unitIndex, callback) {
- if (samples instanceof Uint8Array) {
- throw new Error('Cannot decrypt samples of type Uint8Array');
- }
- for (;; sampleIndex++, unitIndex = 0) {
- if (sampleIndex >= samples.length) {
- callback();
- return;
- }
- var curUnits = samples[sampleIndex].units;
- for (;; unitIndex++) {
- if (unitIndex >= curUnits.length) {
- break;
- }
- var curUnit = curUnits[unitIndex];
- if (curUnit.data.length <= 48 || curUnit.type !== 1 && curUnit.type !== 5) {
- continue;
- }
- this.decryptAvcSample(samples, sampleIndex, unitIndex, callback, curUnit);
- if (!this.decrypter.isSync()) {
- return;
- }
- }
- }
- };
- return SampleAesDecrypter;
- }();
-
- var PACKET_LENGTH = 188;
- var TSDemuxer = /*#__PURE__*/function () {
- function TSDemuxer(observer, config, typeSupported) {
- this.observer = void 0;
- this.config = void 0;
- this.typeSupported = void 0;
- this.sampleAes = null;
- this.pmtParsed = false;
- this.audioCodec = void 0;
- this.videoCodec = void 0;
- this._duration = 0;
- this._pmtId = -1;
- this._videoTrack = void 0;
- this._audioTrack = void 0;
- this._id3Track = void 0;
- this._txtTrack = void 0;
- this.aacOverFlow = null;
- this.remainderData = null;
- this.videoParser = void 0;
- this.observer = observer;
- this.config = config;
- this.typeSupported = typeSupported;
- this.videoParser = new AvcVideoParser();
- }
- TSDemuxer.probe = function probe(data) {
- var syncOffset = TSDemuxer.syncOffset(data);
- if (syncOffset > 0) {
- logger.warn("MPEG2-TS detected but first sync word found @ offset " + syncOffset);
- }
- return syncOffset !== -1;
- };
- TSDemuxer.syncOffset = function syncOffset(data) {
- var length = data.length;
- var scanwindow = Math.min(PACKET_LENGTH * 5, length - PACKET_LENGTH) + 1;
- var i = 0;
- while (i < scanwindow) {
- // a TS init segment should contain at least 2 TS packets: PAT and PMT, each starting with 0x47
- var foundPat = false;
- var packetStart = -1;
- var tsPackets = 0;
- for (var j = i; j < length; j += PACKET_LENGTH) {
- if (data[j] === 0x47 && (length - j === PACKET_LENGTH || data[j + PACKET_LENGTH] === 0x47)) {
- tsPackets++;
- if (packetStart === -1) {
- packetStart = j;
- // First sync word found at offset, increase scan length (#5251)
- if (packetStart !== 0) {
- scanwindow = Math.min(packetStart + PACKET_LENGTH * 99, data.length - PACKET_LENGTH) + 1;
- }
- }
- if (!foundPat) {
- foundPat = parsePID(data, j) === 0;
- }
- // Sync word found at 0 with 3 packets, or found at offset least 2 packets up to scanwindow (#5501)
- if (foundPat && tsPackets > 1 && (packetStart === 0 && tsPackets > 2 || j + PACKET_LENGTH > scanwindow)) {
- return packetStart;
- }
- } else if (tsPackets) {
- // Exit if sync word found, but does not contain contiguous packets
- return -1;
- } else {
- break;
- }
- }
- i++;
- }
- return -1;
- }
-
- /**
- * Creates a track model internal to demuxer used to drive remuxing input
- */;
- TSDemuxer.createTrack = function createTrack(type, duration) {
- return {
- container: type === 'video' || type === 'audio' ? 'video/mp2t' : undefined,
- type: type,
- id: RemuxerTrackIdConfig[type],
- pid: -1,
- inputTimeScale: 90000,
- sequenceNumber: 0,
- samples: [],
- dropped: 0,
- duration: type === 'audio' ? duration : undefined
- };
- }
-
- /**
- * Initializes a new init segment on the demuxer/remuxer interface. Needed for discontinuities/track-switches (or at stream start)
- * Resets all internal track instances of the demuxer.
- */;
- var _proto = TSDemuxer.prototype;
- _proto.resetInitSegment = function resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration) {
- this.pmtParsed = false;
- this._pmtId = -1;
- this._videoTrack = TSDemuxer.createTrack('video');
- this._audioTrack = TSDemuxer.createTrack('audio', trackDuration);
- this._id3Track = TSDemuxer.createTrack('id3');
- this._txtTrack = TSDemuxer.createTrack('text');
- this._audioTrack.segmentCodec = 'aac';
-
- // flush any partial content
- this.aacOverFlow = null;
- this.remainderData = null;
- this.audioCodec = audioCodec;
- this.videoCodec = videoCodec;
- this._duration = trackDuration;
- };
- _proto.resetTimeStamp = function resetTimeStamp() {};
- _proto.resetContiguity = function resetContiguity() {
- var _audioTrack = this._audioTrack,
- _videoTrack = this._videoTrack,
- _id3Track = this._id3Track;
- if (_audioTrack) {
- _audioTrack.pesData = null;
- }
- if (_videoTrack) {
- _videoTrack.pesData = null;
- }
- if (_id3Track) {
- _id3Track.pesData = null;
- }
- this.aacOverFlow = null;
- this.remainderData = null;
- };
- _proto.demux = function demux(data, timeOffset, isSampleAes, flush) {
- if (isSampleAes === void 0) {
- isSampleAes = false;
- }
- if (flush === void 0) {
- flush = false;
- }
- if (!isSampleAes) {
- this.sampleAes = null;
- }
- var pes;
- var videoTrack = this._videoTrack;
- var audioTrack = this._audioTrack;
- var id3Track = this._id3Track;
- var textTrack = this._txtTrack;
- var videoPid = videoTrack.pid;
- var videoData = videoTrack.pesData;
- var audioPid = audioTrack.pid;
- var id3Pid = id3Track.pid;
- var audioData = audioTrack.pesData;
- var id3Data = id3Track.pesData;
- var unknownPID = null;
- var pmtParsed = this.pmtParsed;
- var pmtId = this._pmtId;
- var len = data.length;
- if (this.remainderData) {
- data = appendUint8Array(this.remainderData, data);
- len = data.length;
- this.remainderData = null;
- }
- if (len < PACKET_LENGTH && !flush) {
- this.remainderData = data;
- return {
- audioTrack: audioTrack,
- videoTrack: videoTrack,
- id3Track: id3Track,
- textTrack: textTrack
- };
- }
- var syncOffset = Math.max(0, TSDemuxer.syncOffset(data));
- len -= (len - syncOffset) % PACKET_LENGTH;
- if (len < data.byteLength && !flush) {
- this.remainderData = new Uint8Array(data.buffer, len, data.buffer.byteLength - len);
- }
-
- // loop through TS packets
- var tsPacketErrors = 0;
- for (var start = syncOffset; start < len; start += PACKET_LENGTH) {
- if (data[start] === 0x47) {
- var stt = !!(data[start + 1] & 0x40);
- var pid = parsePID(data, start);
- var atf = (data[start + 3] & 0x30) >> 4;
-
- // if an adaption field is present, its length is specified by the fifth byte of the TS packet header.
- var offset = void 0;
- if (atf > 1) {
- offset = start + 5 + data[start + 4];
- // continue if there is only adaptation field
- if (offset === start + PACKET_LENGTH) {
- continue;
- }
- } else {
- offset = start + 4;
- }
- switch (pid) {
- case videoPid:
- if (stt) {
- if (videoData && (pes = parsePES(videoData))) {
- this.videoParser.parseAVCPES(videoTrack, textTrack, pes, false, this._duration);
- }
- videoData = {
- data: [],
- size: 0
- };
- }
- if (videoData) {
- videoData.data.push(data.subarray(offset, start + PACKET_LENGTH));
- videoData.size += start + PACKET_LENGTH - offset;
- }
- break;
- case audioPid:
- if (stt) {
- if (audioData && (pes = parsePES(audioData))) {
- switch (audioTrack.segmentCodec) {
- case 'aac':
- this.parseAACPES(audioTrack, pes);
- break;
- case 'mp3':
- this.parseMPEGPES(audioTrack, pes);
- break;
- case 'ac3':
- {
- this.parseAC3PES(audioTrack, pes);
- }
- break;
- }
- }
- audioData = {
- data: [],
- size: 0
- };
- }
- if (audioData) {
- audioData.data.push(data.subarray(offset, start + PACKET_LENGTH));
- audioData.size += start + PACKET_LENGTH - offset;
- }
- break;
- case id3Pid:
- if (stt) {
- if (id3Data && (pes = parsePES(id3Data))) {
- this.parseID3PES(id3Track, pes);
- }
- id3Data = {
- data: [],
- size: 0
- };
- }
- if (id3Data) {
- id3Data.data.push(data.subarray(offset, start + PACKET_LENGTH));
- id3Data.size += start + PACKET_LENGTH - offset;
- }
- break;
- case 0:
- if (stt) {
- offset += data[offset] + 1;
- }
- pmtId = this._pmtId = parsePAT(data, offset);
- // logger.log('PMT PID:' + this._pmtId);
- break;
- case pmtId:
- {
- if (stt) {
- offset += data[offset] + 1;
- }
- var parsedPIDs = parsePMT(data, offset, this.typeSupported, isSampleAes, this.observer);
-
- // only update track id if track PID found while parsing PMT
- // this is to avoid resetting the PID to -1 in case
- // track PID transiently disappears from the stream
- // this could happen in case of transient missing audio samples for example
- // NOTE this is only the PID of the track as found in TS,
- // but we are not using this for MP4 track IDs.
- videoPid = parsedPIDs.videoPid;
- if (videoPid > 0) {
- videoTrack.pid = videoPid;
- videoTrack.segmentCodec = parsedPIDs.segmentVideoCodec;
- }
- audioPid = parsedPIDs.audioPid;
- if (audioPid > 0) {
- audioTrack.pid = audioPid;
- audioTrack.segmentCodec = parsedPIDs.segmentAudioCodec;
- }
- id3Pid = parsedPIDs.id3Pid;
- if (id3Pid > 0) {
- id3Track.pid = id3Pid;
- }
- if (unknownPID !== null && !pmtParsed) {
- logger.warn("MPEG-TS PMT found at " + start + " after unknown PID '" + unknownPID + "'. Backtracking to sync byte @" + syncOffset + " to parse all TS packets.");
- unknownPID = null;
- // we set it to -188, the += 188 in the for loop will reset start to 0
- start = syncOffset - 188;
- }
- pmtParsed = this.pmtParsed = true;
- break;
- }
- case 0x11:
- case 0x1fff:
- break;
- default:
- unknownPID = pid;
- break;
- }
- } else {
- tsPacketErrors++;
- }
- }
- if (tsPacketErrors > 0) {
- emitParsingError(this.observer, new Error("Found " + tsPacketErrors + " TS packet/s that do not start with 0x47"));
- }
- videoTrack.pesData = videoData;
- audioTrack.pesData = audioData;
- id3Track.pesData = id3Data;
- var demuxResult = {
- audioTrack: audioTrack,
- videoTrack: videoTrack,
- id3Track: id3Track,
- textTrack: textTrack
- };
- if (flush) {
- this.extractRemainingSamples(demuxResult);
- }
- return demuxResult;
- };
- _proto.flush = function flush() {
- var remainderData = this.remainderData;
- this.remainderData = null;
- var result;
- if (remainderData) {
- result = this.demux(remainderData, -1, false, true);
- } else {
- result = {
- videoTrack: this._videoTrack,
- audioTrack: this._audioTrack,
- id3Track: this._id3Track,
- textTrack: this._txtTrack
- };
- }
- this.extractRemainingSamples(result);
- if (this.sampleAes) {
- return this.decrypt(result, this.sampleAes);
- }
- return result;
- };
- _proto.extractRemainingSamples = function extractRemainingSamples(demuxResult) {
- var audioTrack = demuxResult.audioTrack,
- videoTrack = demuxResult.videoTrack,
- id3Track = demuxResult.id3Track,
- textTrack = demuxResult.textTrack;
- var videoData = videoTrack.pesData;
- var audioData = audioTrack.pesData;
- var id3Data = id3Track.pesData;
- // try to parse last PES packets
- var pes;
- if (videoData && (pes = parsePES(videoData))) {
- this.videoParser.parseAVCPES(videoTrack, textTrack, pes, true, this._duration);
- videoTrack.pesData = null;
- } else {
- // either avcData null or PES truncated, keep it for next frag parsing
- videoTrack.pesData = videoData;
- }
- if (audioData && (pes = parsePES(audioData))) {
- switch (audioTrack.segmentCodec) {
- case 'aac':
- this.parseAACPES(audioTrack, pes);
- break;
- case 'mp3':
- this.parseMPEGPES(audioTrack, pes);
- break;
- case 'ac3':
- {
- this.parseAC3PES(audioTrack, pes);
- }
- break;
- }
- audioTrack.pesData = null;
- } else {
- if (audioData != null && audioData.size) {
- logger.log('last AAC PES packet truncated,might overlap between fragments');
- }
-
- // either audioData null or PES truncated, keep it for next frag parsing
- audioTrack.pesData = audioData;
- }
- if (id3Data && (pes = parsePES(id3Data))) {
- this.parseID3PES(id3Track, pes);
- id3Track.pesData = null;
- } else {
- // either id3Data null or PES truncated, keep it for next frag parsing
- id3Track.pesData = id3Data;
- }
- };
- _proto.demuxSampleAes = function demuxSampleAes(data, keyData, timeOffset) {
- var demuxResult = this.demux(data, timeOffset, true, !this.config.progressive);
- var sampleAes = this.sampleAes = new SampleAesDecrypter(this.observer, this.config, keyData);
- return this.decrypt(demuxResult, sampleAes);
- };
- _proto.decrypt = function decrypt(demuxResult, sampleAes) {
- return new Promise(function (resolve) {
- var audioTrack = demuxResult.audioTrack,
- videoTrack = demuxResult.videoTrack;
- if (audioTrack.samples && audioTrack.segmentCodec === 'aac') {
- sampleAes.decryptAacSamples(audioTrack.samples, 0, function () {
- if (videoTrack.samples) {
- sampleAes.decryptAvcSamples(videoTrack.samples, 0, 0, function () {
- resolve(demuxResult);
- });
- } else {
- resolve(demuxResult);
- }
- });
- } else if (videoTrack.samples) {
- sampleAes.decryptAvcSamples(videoTrack.samples, 0, 0, function () {
- resolve(demuxResult);
- });
- }
- });
- };
- _proto.destroy = function destroy() {
- this._duration = 0;
- };
- _proto.parseAACPES = function parseAACPES(track, pes) {
- var startOffset = 0;
- var aacOverFlow = this.aacOverFlow;
- var data = pes.data;
- if (aacOverFlow) {
- this.aacOverFlow = null;
- var frameMissingBytes = aacOverFlow.missing;
- var sampleLength = aacOverFlow.sample.unit.byteLength;
- // logger.log(`AAC: append overflowing ${sampleLength} bytes to beginning of new PES`);
- if (frameMissingBytes === -1) {
- data = appendUint8Array(aacOverFlow.sample.unit, data);
- } else {
- var frameOverflowBytes = sampleLength - frameMissingBytes;
- aacOverFlow.sample.unit.set(data.subarray(0, frameMissingBytes), frameOverflowBytes);
- track.samples.push(aacOverFlow.sample);
- startOffset = aacOverFlow.missing;
- }
- }
- // look for ADTS header (0xFFFx)
- var offset;
- var len;
- for (offset = startOffset, len = data.length; offset < len - 1; offset++) {
- if (isHeader$1(data, offset)) {
- break;
- }
- }
- // if ADTS header does not start straight from the beginning of the PES payload, raise an error
- if (offset !== startOffset) {
- var reason;
- var recoverable = offset < len - 1;
- if (recoverable) {
- reason = "AAC PES did not start with ADTS header,offset:" + offset;
- } else {
- reason = 'No ADTS header found in AAC PES';
- }
- emitParsingError(this.observer, new Error(reason), recoverable);
- if (!recoverable) {
- return;
- }
- }
- initTrackConfig(track, this.observer, data, offset, this.audioCodec);
- var pts;
- if (pes.pts !== undefined) {
- pts = pes.pts;
- } else if (aacOverFlow) {
- // if last AAC frame is overflowing, we should ensure timestamps are contiguous:
- // first sample PTS should be equal to last sample PTS + frameDuration
- var frameDuration = getFrameDuration(track.samplerate);
- pts = aacOverFlow.sample.pts + frameDuration;
- } else {
- logger.warn('[tsdemuxer]: AAC PES unknown PTS');
- return;
- }
-
- // scan for aac samples
- var frameIndex = 0;
- var frame;
- while (offset < len) {
- frame = appendFrame$1(track, data, offset, pts, frameIndex);
- offset += frame.length;
- if (!frame.missing) {
- frameIndex++;
- for (; offset < len - 1; offset++) {
- if (isHeader$1(data, offset)) {
- break;
- }
- }
- } else {
- this.aacOverFlow = frame;
- break;
- }
- }
- };
- _proto.parseMPEGPES = function parseMPEGPES(track, pes) {
- var data = pes.data;
- var length = data.length;
- var frameIndex = 0;
- var offset = 0;
- var pts = pes.pts;
- if (pts === undefined) {
- logger.warn('[tsdemuxer]: MPEG PES unknown PTS');
- return;
- }
- while (offset < length) {
- if (isHeader(data, offset)) {
- var frame = appendFrame(track, data, offset, pts, frameIndex);
- if (frame) {
- offset += frame.length;
- frameIndex++;
- } else {
- // logger.log('Unable to parse Mpeg audio frame');
- break;
- }
- } else {
- // nothing found, keep looking
- offset++;
- }
- }
- };
- _proto.parseAC3PES = function parseAC3PES(track, pes) {
- {
- var data = pes.data;
- var pts = pes.pts;
- if (pts === undefined) {
- logger.warn('[tsdemuxer]: AC3 PES unknown PTS');
- return;
- }
- var length = data.length;
- var frameIndex = 0;
- var offset = 0;
- var parsed;
- while (offset < length && (parsed = _appendFrame(track, data, offset, pts, frameIndex++)) > 0) {
- offset += parsed;
- }
- }
- };
- _proto.parseID3PES = function parseID3PES(id3Track, pes) {
- if (pes.pts === undefined) {
- logger.warn('[tsdemuxer]: ID3 PES unknown PTS');
- return;
- }
- var id3Sample = _extends({}, pes, {
- type: this._videoTrack ? MetadataSchema.emsg : MetadataSchema.audioId3,
- duration: Number.POSITIVE_INFINITY
- });
- id3Track.samples.push(id3Sample);
- };
- return TSDemuxer;
- }();
- function parsePID(data, offset) {
- // pid is a 13-bit field starting at the last bit of TS[1]
- return ((data[offset + 1] & 0x1f) << 8) + data[offset + 2];
- }
- function parsePAT(data, offset) {
- // skip the PSI header and parse the first PMT entry
- return (data[offset + 10] & 0x1f) << 8 | data[offset + 11];
- }
- function parsePMT(data, offset, typeSupported, isSampleAes, observer) {
- var result = {
- audioPid: -1,
- videoPid: -1,
- id3Pid: -1,
- segmentVideoCodec: 'avc',
- segmentAudioCodec: 'aac'
- };
- var sectionLength = (data[offset + 1] & 0x0f) << 8 | data[offset + 2];
- var tableEnd = offset + 3 + sectionLength - 4;
- // to determine where the table is, we have to figure out how
- // long the program info descriptors are
- var programInfoLength = (data[offset + 10] & 0x0f) << 8 | data[offset + 11];
- // advance the offset to the first entry in the mapping table
- offset += 12 + programInfoLength;
- while (offset < tableEnd) {
- var pid = parsePID(data, offset);
- var esInfoLength = (data[offset + 3] & 0x0f) << 8 | data[offset + 4];
- switch (data[offset]) {
- case 0xcf:
- // SAMPLE-AES AAC
- if (!isSampleAes) {
- logEncryptedSamplesFoundInUnencryptedStream('ADTS AAC');
- break;
- }
- /* falls through */
- case 0x0f:
- // ISO/IEC 13818-7 ADTS AAC (MPEG-2 lower bit-rate audio)
- // logger.log('AAC PID:' + pid);
- if (result.audioPid === -1) {
- result.audioPid = pid;
- }
- break;
-
- // Packetized metadata (ID3)
- case 0x15:
- // logger.log('ID3 PID:' + pid);
- if (result.id3Pid === -1) {
- result.id3Pid = pid;
- }
- break;
- case 0xdb:
- // SAMPLE-AES AVC
- if (!isSampleAes) {
- logEncryptedSamplesFoundInUnencryptedStream('H.264');
- break;
- }
- /* falls through */
- case 0x1b:
- // ITU-T Rec. H.264 and ISO/IEC 14496-10 (lower bit-rate video)
- // logger.log('AVC PID:' + pid);
- if (result.videoPid === -1) {
- result.videoPid = pid;
- result.segmentVideoCodec = 'avc';
- }
- break;
-
- // ISO/IEC 11172-3 (MPEG-1 audio)
- // or ISO/IEC 13818-3 (MPEG-2 halved sample rate audio)
- case 0x03:
- case 0x04:
- // logger.log('MPEG PID:' + pid);
- if (!typeSupported.mpeg && !typeSupported.mp3) {
- logger.log('MPEG audio found, not supported in this browser');
- } else if (result.audioPid === -1) {
- result.audioPid = pid;
- result.segmentAudioCodec = 'mp3';
- }
- break;
- case 0xc1:
- // SAMPLE-AES AC3
- if (!isSampleAes) {
- logEncryptedSamplesFoundInUnencryptedStream('AC-3');
- break;
- }
- /* falls through */
- case 0x81:
- {
- if (!typeSupported.ac3) {
- logger.log('AC-3 audio found, not supported in this browser');
- } else if (result.audioPid === -1) {
- result.audioPid = pid;
- result.segmentAudioCodec = 'ac3';
- }
- }
- break;
- case 0x06:
- // stream_type 6 can mean a lot of different things in case of DVB.
- // We need to look at the descriptors. Right now, we're only interested
- // in AC-3 audio, so we do the descriptor parsing only when we don't have
- // an audio PID yet.
- if (result.audioPid === -1 && esInfoLength > 0) {
- var parsePos = offset + 5;
- var remaining = esInfoLength;
- while (remaining > 2) {
- var descriptorId = data[parsePos];
- switch (descriptorId) {
- case 0x6a:
- // DVB Descriptor for AC-3
- {
- if (typeSupported.ac3 !== true) {
- logger.log('AC-3 audio found, not supported in this browser for now');
- } else {
- result.audioPid = pid;
- result.segmentAudioCodec = 'ac3';
- }
- }
- break;
- }
- var descriptorLen = data[parsePos + 1] + 2;
- parsePos += descriptorLen;
- remaining -= descriptorLen;
- }
- }
- break;
- case 0xc2: // SAMPLE-AES EC3
- /* falls through */
- case 0x87:
- emitParsingError(observer, new Error('Unsupported EC-3 in M2TS found'));
- return result;
- case 0x24:
- emitParsingError(observer, new Error('Unsupported HEVC in M2TS found'));
- return result;
- }
- // move to the next table entry
- // skip past the elementary stream descriptors, if present
- offset += esInfoLength + 5;
- }
- return result;
- }
- function emitParsingError(observer, error, levelRetry) {
- logger.warn("parsing error: " + error.message);
- observer.emit(Events.ERROR, Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.FRAG_PARSING_ERROR,
- fatal: false,
- levelRetry: levelRetry,
- error: error,
- reason: error.message
- });
- }
- function logEncryptedSamplesFoundInUnencryptedStream(type) {
- logger.log(type + " with AES-128-CBC encryption found in unencrypted stream");
- }
- function parsePES(stream) {
- var i = 0;
- var frag;
- var pesLen;
- var pesHdrLen;
- var pesPts;
- var pesDts;
- var data = stream.data;
- // safety check
- if (!stream || stream.size === 0) {
- return null;
- }
-
- // we might need up to 19 bytes to read PES header
- // if first chunk of data is less than 19 bytes, let's merge it with following ones until we get 19 bytes
- // usually only one merge is needed (and this is rare ...)
- while (data[0].length < 19 && data.length > 1) {
- data[0] = appendUint8Array(data[0], data[1]);
- data.splice(1, 1);
- }
- // retrieve PTS/DTS from first fragment
- frag = data[0];
- var pesPrefix = (frag[0] << 16) + (frag[1] << 8) + frag[2];
- if (pesPrefix === 1) {
- pesLen = (frag[4] << 8) + frag[5];
- // if PES parsed length is not zero and greater than total received length, stop parsing. PES might be truncated
- // minus 6 : PES header size
- if (pesLen && pesLen > stream.size - 6) {
- return null;
- }
- var pesFlags = frag[7];
- if (pesFlags & 0xc0) {
- /* PES header described here : http://dvd.sourceforge.net/dvdinfo/pes-hdr.html
- as PTS / DTS is 33 bit we cannot use bitwise operator in JS,
- as Bitwise operators treat their operands as a sequence of 32 bits */
- pesPts = (frag[9] & 0x0e) * 536870912 +
- // 1 << 29
- (frag[10] & 0xff) * 4194304 +
- // 1 << 22
- (frag[11] & 0xfe) * 16384 +
- // 1 << 14
- (frag[12] & 0xff) * 128 +
- // 1 << 7
- (frag[13] & 0xfe) / 2;
- if (pesFlags & 0x40) {
- pesDts = (frag[14] & 0x0e) * 536870912 +
- // 1 << 29
- (frag[15] & 0xff) * 4194304 +
- // 1 << 22
- (frag[16] & 0xfe) * 16384 +
- // 1 << 14
- (frag[17] & 0xff) * 128 +
- // 1 << 7
- (frag[18] & 0xfe) / 2;
- if (pesPts - pesDts > 60 * 90000) {
- logger.warn(Math.round((pesPts - pesDts) / 90000) + "s delta between PTS and DTS, align them");
- pesPts = pesDts;
- }
- } else {
- pesDts = pesPts;
- }
- }
- pesHdrLen = frag[8];
- // 9 bytes : 6 bytes for PES header + 3 bytes for PES extension
- var payloadStartOffset = pesHdrLen + 9;
- if (stream.size <= payloadStartOffset) {
- return null;
- }
- stream.size -= payloadStartOffset;
- // reassemble PES packet
- var pesData = new Uint8Array(stream.size);
- for (var j = 0, dataLen = data.length; j < dataLen; j++) {
- frag = data[j];
- var len = frag.byteLength;
- if (payloadStartOffset) {
- if (payloadStartOffset > len) {
- // trim full frag if PES header bigger than frag
- payloadStartOffset -= len;
- continue;
- } else {
- // trim partial frag if PES header smaller than frag
- frag = frag.subarray(payloadStartOffset);
- len -= payloadStartOffset;
- payloadStartOffset = 0;
- }
- }
- pesData.set(frag, i);
- i += len;
- }
- if (pesLen) {
- // payload size : remove PES header + PES extension
- pesLen -= pesHdrLen + 3;
- }
- return {
- data: pesData,
- pts: pesPts,
- dts: pesDts,
- len: pesLen
- };
- }
- return null;
- }
-
- var MP3Demuxer = /*#__PURE__*/function (_BaseAudioDemuxer) {
- _inheritsLoose(MP3Demuxer, _BaseAudioDemuxer);
- function MP3Demuxer() {
- return _BaseAudioDemuxer.apply(this, arguments) || this;
- }
- var _proto = MP3Demuxer.prototype;
- _proto.resetInitSegment = function resetInitSegment(initSegment, audioCodec, videoCodec, trackDuration) {
- _BaseAudioDemuxer.prototype.resetInitSegment.call(this, initSegment, audioCodec, videoCodec, trackDuration);
- this._audioTrack = {
- container: 'audio/mpeg',
- type: 'audio',
- id: 2,
- pid: -1,
- sequenceNumber: 0,
- segmentCodec: 'mp3',
- samples: [],
- manifestCodec: audioCodec,
- duration: trackDuration,
- inputTimeScale: 90000,
- dropped: 0
- };
- };
- MP3Demuxer.probe = function probe$1(data) {
- if (!data) {
- return false;
- }
-
- // check if data contains ID3 timestamp and MPEG sync word
- // Look for MPEG header | 1111 1111 | 111X XYZX | where X can be either 0 or 1 and Y or Z should be 1
- // Layer bits (position 14 and 15) in header should be always different from 0 (Layer I or Layer II or Layer III)
- // More info http://www.mp3-tech.org/programmer/frame_header.html
- var id3Data = getID3Data(data, 0);
- var offset = (id3Data == null ? void 0 : id3Data.length) || 0;
-
- // Check for ac-3|ec-3 sync bytes and return false if present
- if (id3Data && data[offset] === 0x0b && data[offset + 1] === 0x77 && getTimeStamp(id3Data) !== undefined &&
- // check the bsid to confirm ac-3 or ec-3 (not mp3)
- getAudioBSID(data, offset) <= 16) {
- return false;
- }
- for (var length = data.length; offset < length; offset++) {
- if (probe(data, offset)) {
- logger.log('MPEG Audio sync word found !');
- return true;
- }
- }
- return false;
- };
- _proto.canParse = function canParse$1(data, offset) {
- return canParse(data, offset);
- };
- _proto.appendFrame = function appendFrame$1(track, data, offset) {
- if (this.basePTS === null) {
- return;
- }
- return appendFrame(track, data, offset, this.basePTS, this.frameIndex);
- };
- return MP3Demuxer;
- }(BaseAudioDemuxer);
-
- /**
- * AAC helper
- */
- var AAC = /*#__PURE__*/function () {
- function AAC() {}
- AAC.getSilentFrame = function getSilentFrame(codec, channelCount) {
- switch (codec) {
- case 'mp4a.40.2':
- if (channelCount === 1) {
- return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x23, 0x80]);
- } else if (channelCount === 2) {
- return new Uint8Array([0x21, 0x00, 0x49, 0x90, 0x02, 0x19, 0x00, 0x23, 0x80]);
- } else if (channelCount === 3) {
- return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x20, 0x84, 0x01, 0x26, 0x40, 0x08, 0x64, 0x00, 0x8e]);
- } else if (channelCount === 4) {
- return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x20, 0x84, 0x01, 0x26, 0x40, 0x08, 0x64, 0x00, 0x80, 0x2c, 0x80, 0x08, 0x02, 0x38]);
- } else if (channelCount === 5) {
- return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x20, 0x84, 0x01, 0x26, 0x40, 0x08, 0x64, 0x00, 0x82, 0x30, 0x04, 0x99, 0x00, 0x21, 0x90, 0x02, 0x38]);
- } else if (channelCount === 6) {
- return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x20, 0x84, 0x01, 0x26, 0x40, 0x08, 0x64, 0x00, 0x82, 0x30, 0x04, 0x99, 0x00, 0x21, 0x90, 0x02, 0x00, 0xb2, 0x00, 0x20, 0x08, 0xe0]);
- }
- break;
- // handle HE-AAC below (mp4a.40.5 / mp4a.40.29)
- default:
- if (channelCount === 1) {
- // ffmpeg -y -f lavfi -i "aevalsrc=0:d=0.05" -c:a libfdk_aac -profile:a aac_he -b:a 4k output.aac && hexdump -v -e '16/1 "0x%x," "\n"' -v output.aac
- return new Uint8Array([0x1, 0x40, 0x22, 0x80, 0xa3, 0x4e, 0xe6, 0x80, 0xba, 0x8, 0x0, 0x0, 0x0, 0x1c, 0x6, 0xf1, 0xc1, 0xa, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5e]);
- } else if (channelCount === 2) {
- // ffmpeg -y -f lavfi -i "aevalsrc=0|0:d=0.05" -c:a libfdk_aac -profile:a aac_he_v2 -b:a 4k output.aac && hexdump -v -e '16/1 "0x%x," "\n"' -v output.aac
- return new Uint8Array([0x1, 0x40, 0x22, 0x80, 0xa3, 0x5e, 0xe6, 0x80, 0xba, 0x8, 0x0, 0x0, 0x0, 0x0, 0x95, 0x0, 0x6, 0xf1, 0xa1, 0xa, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5e]);
- } else if (channelCount === 3) {
- // ffmpeg -y -f lavfi -i "aevalsrc=0|0|0:d=0.05" -c:a libfdk_aac -profile:a aac_he_v2 -b:a 4k output.aac && hexdump -v -e '16/1 "0x%x," "\n"' -v output.aac
- return new Uint8Array([0x1, 0x40, 0x22, 0x80, 0xa3, 0x5e, 0xe6, 0x80, 0xba, 0x8, 0x0, 0x0, 0x0, 0x0, 0x95, 0x0, 0x6, 0xf1, 0xa1, 0xa, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5e]);
- }
- break;
- }
- return undefined;
- };
- return AAC;
- }();
-
- /**
- * Generate MP4 Box
- */
-
- var UINT32_MAX = Math.pow(2, 32) - 1;
- var MP4 = /*#__PURE__*/function () {
- function MP4() {}
- MP4.init = function init() {
- MP4.types = {
- avc1: [],
- // codingname
- avcC: [],
- btrt: [],
- dinf: [],
- dref: [],
- esds: [],
- ftyp: [],
- hdlr: [],
- mdat: [],
- mdhd: [],
- mdia: [],
- mfhd: [],
- minf: [],
- moof: [],
- moov: [],
- mp4a: [],
- '.mp3': [],
- dac3: [],
- 'ac-3': [],
- mvex: [],
- mvhd: [],
- pasp: [],
- sdtp: [],
- stbl: [],
- stco: [],
- stsc: [],
- stsd: [],
- stsz: [],
- stts: [],
- tfdt: [],
- tfhd: [],
- traf: [],
- trak: [],
- trun: [],
- trex: [],
- tkhd: [],
- vmhd: [],
- smhd: []
- };
- var i;
- for (i in MP4.types) {
- if (MP4.types.hasOwnProperty(i)) {
- MP4.types[i] = [i.charCodeAt(0), i.charCodeAt(1), i.charCodeAt(2), i.charCodeAt(3)];
- }
- }
- var videoHdlr = new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x00,
- // pre_defined
- 0x76, 0x69, 0x64, 0x65,
- // handler_type: 'vide'
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x56, 0x69, 0x64, 0x65, 0x6f, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'VideoHandler'
- ]);
- var audioHdlr = new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x00,
- // pre_defined
- 0x73, 0x6f, 0x75, 0x6e,
- // handler_type: 'soun'
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x53, 0x6f, 0x75, 0x6e, 0x64, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'SoundHandler'
- ]);
- MP4.HDLR_TYPES = {
- video: videoHdlr,
- audio: audioHdlr
- };
- var dref = new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x01,
- // entry_count
- 0x00, 0x00, 0x00, 0x0c,
- // entry_size
- 0x75, 0x72, 0x6c, 0x20,
- // 'url' type
- 0x00,
- // version 0
- 0x00, 0x00, 0x01 // entry_flags
- ]);
- var stco = new Uint8Array([0x00,
- // version
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x00 // entry_count
- ]);
- MP4.STTS = MP4.STSC = MP4.STCO = stco;
- MP4.STSZ = new Uint8Array([0x00,
- // version
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x00,
- // sample_size
- 0x00, 0x00, 0x00, 0x00 // sample_count
- ]);
- MP4.VMHD = new Uint8Array([0x00,
- // version
- 0x00, 0x00, 0x01,
- // flags
- 0x00, 0x00,
- // graphicsmode
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // opcolor
- ]);
- MP4.SMHD = new Uint8Array([0x00,
- // version
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00,
- // balance
- 0x00, 0x00 // reserved
- ]);
- MP4.STSD = new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x01]); // entry_count
-
- var majorBrand = new Uint8Array([105, 115, 111, 109]); // isom
- var avc1Brand = new Uint8Array([97, 118, 99, 49]); // avc1
- var minorVersion = new Uint8Array([0, 0, 0, 1]);
- MP4.FTYP = MP4.box(MP4.types.ftyp, majorBrand, minorVersion, majorBrand, avc1Brand);
- MP4.DINF = MP4.box(MP4.types.dinf, MP4.box(MP4.types.dref, dref));
- };
- MP4.box = function box(type) {
- var size = 8;
- for (var _len = arguments.length, payload = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
- payload[_key - 1] = arguments[_key];
- }
- var i = payload.length;
- var len = i;
- // calculate the total size we need to allocate
- while (i--) {
- size += payload[i].byteLength;
- }
- var result = new Uint8Array(size);
- result[0] = size >> 24 & 0xff;
- result[1] = size >> 16 & 0xff;
- result[2] = size >> 8 & 0xff;
- result[3] = size & 0xff;
- result.set(type, 4);
- // copy the payload into the result
- for (i = 0, size = 8; i < len; i++) {
- // copy payload[i] array @ offset size
- result.set(payload[i], size);
- size += payload[i].byteLength;
- }
- return result;
- };
- MP4.hdlr = function hdlr(type) {
- return MP4.box(MP4.types.hdlr, MP4.HDLR_TYPES[type]);
- };
- MP4.mdat = function mdat(data) {
- return MP4.box(MP4.types.mdat, data);
- };
- MP4.mdhd = function mdhd(timescale, duration) {
- duration *= timescale;
- var upperWordDuration = Math.floor(duration / (UINT32_MAX + 1));
- var lowerWordDuration = Math.floor(duration % (UINT32_MAX + 1));
- return MP4.box(MP4.types.mdhd, new Uint8Array([0x01,
- // version 1
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
- // creation_time
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03,
- // modification_time
- timescale >> 24 & 0xff, timescale >> 16 & 0xff, timescale >> 8 & 0xff, timescale & 0xff,
- // timescale
- upperWordDuration >> 24, upperWordDuration >> 16 & 0xff, upperWordDuration >> 8 & 0xff, upperWordDuration & 0xff, lowerWordDuration >> 24, lowerWordDuration >> 16 & 0xff, lowerWordDuration >> 8 & 0xff, lowerWordDuration & 0xff, 0x55, 0xc4,
- // 'und' language (undetermined)
- 0x00, 0x00]));
- };
- MP4.mdia = function mdia(track) {
- return MP4.box(MP4.types.mdia, MP4.mdhd(track.timescale, track.duration), MP4.hdlr(track.type), MP4.minf(track));
- };
- MP4.mfhd = function mfhd(sequenceNumber) {
- return MP4.box(MP4.types.mfhd, new Uint8Array([0x00, 0x00, 0x00, 0x00,
- // flags
- sequenceNumber >> 24, sequenceNumber >> 16 & 0xff, sequenceNumber >> 8 & 0xff, sequenceNumber & 0xff // sequence_number
- ]));
- };
- MP4.minf = function minf(track) {
- if (track.type === 'audio') {
- return MP4.box(MP4.types.minf, MP4.box(MP4.types.smhd, MP4.SMHD), MP4.DINF, MP4.stbl(track));
- } else {
- return MP4.box(MP4.types.minf, MP4.box(MP4.types.vmhd, MP4.VMHD), MP4.DINF, MP4.stbl(track));
- }
- };
- MP4.moof = function moof(sn, baseMediaDecodeTime, track) {
- return MP4.box(MP4.types.moof, MP4.mfhd(sn), MP4.traf(track, baseMediaDecodeTime));
- };
- MP4.moov = function moov(tracks) {
- var i = tracks.length;
- var boxes = [];
- while (i--) {
- boxes[i] = MP4.trak(tracks[i]);
- }
- return MP4.box.apply(null, [MP4.types.moov, MP4.mvhd(tracks[0].timescale, tracks[0].duration)].concat(boxes).concat(MP4.mvex(tracks)));
- };
- MP4.mvex = function mvex(tracks) {
- var i = tracks.length;
- var boxes = [];
- while (i--) {
- boxes[i] = MP4.trex(tracks[i]);
- }
- return MP4.box.apply(null, [MP4.types.mvex].concat(boxes));
- };
- MP4.mvhd = function mvhd(timescale, duration) {
- duration *= timescale;
- var upperWordDuration = Math.floor(duration / (UINT32_MAX + 1));
- var lowerWordDuration = Math.floor(duration % (UINT32_MAX + 1));
- var bytes = new Uint8Array([0x01,
- // version 1
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
- // creation_time
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03,
- // modification_time
- timescale >> 24 & 0xff, timescale >> 16 & 0xff, timescale >> 8 & 0xff, timescale & 0xff,
- // timescale
- upperWordDuration >> 24, upperWordDuration >> 16 & 0xff, upperWordDuration >> 8 & 0xff, upperWordDuration & 0xff, lowerWordDuration >> 24, lowerWordDuration >> 16 & 0xff, lowerWordDuration >> 8 & 0xff, lowerWordDuration & 0xff, 0x00, 0x01, 0x00, 0x00,
- // 1.0 rate
- 0x01, 0x00,
- // 1.0 volume
- 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,
- // transformation: unity matrix
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- // pre_defined
- 0xff, 0xff, 0xff, 0xff // next_track_ID
- ]);
- return MP4.box(MP4.types.mvhd, bytes);
- };
- MP4.sdtp = function sdtp(track) {
- var samples = track.samples || [];
- var bytes = new Uint8Array(4 + samples.length);
- var i;
- var flags;
- // leave the full box header (4 bytes) all zero
- // write the sample table
- for (i = 0; i < samples.length; i++) {
- flags = samples[i].flags;
- bytes[i + 4] = flags.dependsOn << 4 | flags.isDependedOn << 2 | flags.hasRedundancy;
- }
- return MP4.box(MP4.types.sdtp, bytes);
- };
- MP4.stbl = function stbl(track) {
- return MP4.box(MP4.types.stbl, MP4.stsd(track), MP4.box(MP4.types.stts, MP4.STTS), MP4.box(MP4.types.stsc, MP4.STSC), MP4.box(MP4.types.stsz, MP4.STSZ), MP4.box(MP4.types.stco, MP4.STCO));
- };
- MP4.avc1 = function avc1(track) {
- var sps = [];
- var pps = [];
- var i;
- var data;
- var len;
- // assemble the SPSs
-
- for (i = 0; i < track.sps.length; i++) {
- data = track.sps[i];
- len = data.byteLength;
- sps.push(len >>> 8 & 0xff);
- sps.push(len & 0xff);
-
- // SPS
- sps = sps.concat(Array.prototype.slice.call(data));
- }
-
- // assemble the PPSs
- for (i = 0; i < track.pps.length; i++) {
- data = track.pps[i];
- len = data.byteLength;
- pps.push(len >>> 8 & 0xff);
- pps.push(len & 0xff);
- pps = pps.concat(Array.prototype.slice.call(data));
- }
- var avcc = MP4.box(MP4.types.avcC, new Uint8Array([0x01,
- // version
- sps[3],
- // profile
- sps[4],
- // profile compat
- sps[5],
- // level
- 0xfc | 3,
- // lengthSizeMinusOne, hard-coded to 4 bytes
- 0xe0 | track.sps.length // 3bit reserved (111) + numOfSequenceParameterSets
- ].concat(sps).concat([track.pps.length // numOfPictureParameterSets
- ]).concat(pps))); // "PPS"
- var width = track.width;
- var height = track.height;
- var hSpacing = track.pixelRatio[0];
- var vSpacing = track.pixelRatio[1];
- return MP4.box(MP4.types.avc1, new Uint8Array([0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x01,
- // data_reference_index
- 0x00, 0x00,
- // pre_defined
- 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- // pre_defined
- width >> 8 & 0xff, width & 0xff,
- // width
- height >> 8 & 0xff, height & 0xff,
- // height
- 0x00, 0x48, 0x00, 0x00,
- // horizresolution
- 0x00, 0x48, 0x00, 0x00,
- // vertresolution
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x01,
- // frame_count
- 0x12, 0x64, 0x61, 0x69, 0x6c,
- // dailymotion/hls.js
- 0x79, 0x6d, 0x6f, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x68, 0x6c, 0x73, 0x2e, 0x6a, 0x73, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- // compressorname
- 0x00, 0x18,
- // depth = 24
- 0x11, 0x11]),
- // pre_defined = -1
- avcc, MP4.box(MP4.types.btrt, new Uint8Array([0x00, 0x1c, 0x9c, 0x80,
- // bufferSizeDB
- 0x00, 0x2d, 0xc6, 0xc0,
- // maxBitrate
- 0x00, 0x2d, 0xc6, 0xc0])),
- // avgBitrate
- MP4.box(MP4.types.pasp, new Uint8Array([hSpacing >> 24,
- // hSpacing
- hSpacing >> 16 & 0xff, hSpacing >> 8 & 0xff, hSpacing & 0xff, vSpacing >> 24,
- // vSpacing
- vSpacing >> 16 & 0xff, vSpacing >> 8 & 0xff, vSpacing & 0xff])));
- };
- MP4.esds = function esds(track) {
- var configlen = track.config.length;
- return new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x00,
- // flags
-
- 0x03,
- // descriptor_type
- 0x17 + configlen,
- // length
- 0x00, 0x01,
- // es_id
- 0x00,
- // stream_priority
-
- 0x04,
- // descriptor_type
- 0x0f + configlen,
- // length
- 0x40,
- // codec : mpeg4_audio
- 0x15,
- // stream_type
- 0x00, 0x00, 0x00,
- // buffer_size
- 0x00, 0x00, 0x00, 0x00,
- // maxBitrate
- 0x00, 0x00, 0x00, 0x00,
- // avgBitrate
-
- 0x05 // descriptor_type
- ].concat([configlen]).concat(track.config).concat([0x06, 0x01, 0x02])); // GASpecificConfig)); // length + audio config descriptor
- };
- MP4.audioStsd = function audioStsd(track) {
- var samplerate = track.samplerate;
- return new Uint8Array([0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x01,
- // data_reference_index
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, track.channelCount,
- // channelcount
- 0x00, 0x10,
- // sampleSize:16bits
- 0x00, 0x00, 0x00, 0x00,
- // reserved2
- samplerate >> 8 & 0xff, samplerate & 0xff,
- //
- 0x00, 0x00]);
- };
- MP4.mp4a = function mp4a(track) {
- return MP4.box(MP4.types.mp4a, MP4.audioStsd(track), MP4.box(MP4.types.esds, MP4.esds(track)));
- };
- MP4.mp3 = function mp3(track) {
- return MP4.box(MP4.types['.mp3'], MP4.audioStsd(track));
- };
- MP4.ac3 = function ac3(track) {
- return MP4.box(MP4.types['ac-3'], MP4.audioStsd(track), MP4.box(MP4.types.dac3, track.config));
- };
- MP4.stsd = function stsd(track) {
- if (track.type === 'audio') {
- if (track.segmentCodec === 'mp3' && track.codec === 'mp3') {
- return MP4.box(MP4.types.stsd, MP4.STSD, MP4.mp3(track));
- }
- if (track.segmentCodec === 'ac3') {
- return MP4.box(MP4.types.stsd, MP4.STSD, MP4.ac3(track));
- }
- return MP4.box(MP4.types.stsd, MP4.STSD, MP4.mp4a(track));
- } else {
- return MP4.box(MP4.types.stsd, MP4.STSD, MP4.avc1(track));
- }
- };
- MP4.tkhd = function tkhd(track) {
- var id = track.id;
- var duration = track.duration * track.timescale;
- var width = track.width;
- var height = track.height;
- var upperWordDuration = Math.floor(duration / (UINT32_MAX + 1));
- var lowerWordDuration = Math.floor(duration % (UINT32_MAX + 1));
- return MP4.box(MP4.types.tkhd, new Uint8Array([0x01,
- // version 1
- 0x00, 0x00, 0x07,
- // flags
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
- // creation_time
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03,
- // modification_time
- id >> 24 & 0xff, id >> 16 & 0xff, id >> 8 & 0xff, id & 0xff,
- // track_ID
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- upperWordDuration >> 24, upperWordDuration >> 16 & 0xff, upperWordDuration >> 8 & 0xff, upperWordDuration & 0xff, lowerWordDuration >> 24, lowerWordDuration >> 16 & 0xff, lowerWordDuration >> 8 & 0xff, lowerWordDuration & 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00,
- // layer
- 0x00, 0x00,
- // alternate_group
- 0x00, 0x00,
- // non-audio track volume
- 0x00, 0x00,
- // reserved
- 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,
- // transformation: unity matrix
- width >> 8 & 0xff, width & 0xff, 0x00, 0x00,
- // width
- height >> 8 & 0xff, height & 0xff, 0x00, 0x00 // height
- ]));
- };
- MP4.traf = function traf(track, baseMediaDecodeTime) {
- var sampleDependencyTable = MP4.sdtp(track);
- var id = track.id;
- var upperWordBaseMediaDecodeTime = Math.floor(baseMediaDecodeTime / (UINT32_MAX + 1));
- var lowerWordBaseMediaDecodeTime = Math.floor(baseMediaDecodeTime % (UINT32_MAX + 1));
- return MP4.box(MP4.types.traf, MP4.box(MP4.types.tfhd, new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x00,
- // flags
- id >> 24, id >> 16 & 0xff, id >> 8 & 0xff, id & 0xff // track_ID
- ])), MP4.box(MP4.types.tfdt, new Uint8Array([0x01,
- // version 1
- 0x00, 0x00, 0x00,
- // flags
- upperWordBaseMediaDecodeTime >> 24, upperWordBaseMediaDecodeTime >> 16 & 0xff, upperWordBaseMediaDecodeTime >> 8 & 0xff, upperWordBaseMediaDecodeTime & 0xff, lowerWordBaseMediaDecodeTime >> 24, lowerWordBaseMediaDecodeTime >> 16 & 0xff, lowerWordBaseMediaDecodeTime >> 8 & 0xff, lowerWordBaseMediaDecodeTime & 0xff])), MP4.trun(track, sampleDependencyTable.length + 16 +
- // tfhd
- 20 +
- // tfdt
- 8 +
- // traf header
- 16 +
- // mfhd
- 8 +
- // moof header
- 8),
- // mdat header
- sampleDependencyTable);
- }
-
- /**
- * Generate a track box.
- * @param track a track definition
- */;
- MP4.trak = function trak(track) {
- track.duration = track.duration || 0xffffffff;
- return MP4.box(MP4.types.trak, MP4.tkhd(track), MP4.mdia(track));
- };
- MP4.trex = function trex(track) {
- var id = track.id;
- return MP4.box(MP4.types.trex, new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x00,
- // flags
- id >> 24, id >> 16 & 0xff, id >> 8 & 0xff, id & 0xff,
- // track_ID
- 0x00, 0x00, 0x00, 0x01,
- // default_sample_description_index
- 0x00, 0x00, 0x00, 0x00,
- // default_sample_duration
- 0x00, 0x00, 0x00, 0x00,
- // default_sample_size
- 0x00, 0x01, 0x00, 0x01 // default_sample_flags
- ]));
- };
- MP4.trun = function trun(track, offset) {
- var samples = track.samples || [];
- var len = samples.length;
- var arraylen = 12 + 16 * len;
- var array = new Uint8Array(arraylen);
- var i;
- var sample;
- var duration;
- var size;
- var flags;
- var cts;
- offset += 8 + arraylen;
- array.set([track.type === 'video' ? 0x01 : 0x00,
- // version 1 for video with signed-int sample_composition_time_offset
- 0x00, 0x0f, 0x01,
- // flags
- len >>> 24 & 0xff, len >>> 16 & 0xff, len >>> 8 & 0xff, len & 0xff,
- // sample_count
- offset >>> 24 & 0xff, offset >>> 16 & 0xff, offset >>> 8 & 0xff, offset & 0xff // data_offset
- ], 0);
- for (i = 0; i < len; i++) {
- sample = samples[i];
- duration = sample.duration;
- size = sample.size;
- flags = sample.flags;
- cts = sample.cts;
- array.set([duration >>> 24 & 0xff, duration >>> 16 & 0xff, duration >>> 8 & 0xff, duration & 0xff,
- // sample_duration
- size >>> 24 & 0xff, size >>> 16 & 0xff, size >>> 8 & 0xff, size & 0xff,
- // sample_size
- flags.isLeading << 2 | flags.dependsOn, flags.isDependedOn << 6 | flags.hasRedundancy << 4 | flags.paddingValue << 1 | flags.isNonSync, flags.degradPrio & 0xf0 << 8, flags.degradPrio & 0x0f,
- // sample_flags
- cts >>> 24 & 0xff, cts >>> 16 & 0xff, cts >>> 8 & 0xff, cts & 0xff // sample_composition_time_offset
- ], 12 + 16 * i);
- }
- return MP4.box(MP4.types.trun, array);
- };
- MP4.initSegment = function initSegment(tracks) {
- if (!MP4.types) {
- MP4.init();
- }
- var movie = MP4.moov(tracks);
- var result = appendUint8Array(MP4.FTYP, movie);
- return result;
- };
- return MP4;
- }();
- MP4.types = void 0;
- MP4.HDLR_TYPES = void 0;
- MP4.STTS = void 0;
- MP4.STSC = void 0;
- MP4.STCO = void 0;
- MP4.STSZ = void 0;
- MP4.VMHD = void 0;
- MP4.SMHD = void 0;
- MP4.STSD = void 0;
- MP4.FTYP = void 0;
- MP4.DINF = void 0;
-
- var MPEG_TS_CLOCK_FREQ_HZ = 90000;
- function toTimescaleFromBase(baseTime, destScale, srcBase, round) {
- if (srcBase === void 0) {
- srcBase = 1;
- }
- if (round === void 0) {
- round = false;
- }
- var result = baseTime * destScale * srcBase; // equivalent to `(value * scale) / (1 / base)`
- return round ? Math.round(result) : result;
- }
- function toTimescaleFromScale(baseTime, destScale, srcScale, round) {
- if (srcScale === void 0) {
- srcScale = 1;
- }
- if (round === void 0) {
- round = false;
- }
- return toTimescaleFromBase(baseTime, destScale, 1 / srcScale, round);
- }
- function toMsFromMpegTsClock(baseTime, round) {
- if (round === void 0) {
- round = false;
- }
- return toTimescaleFromBase(baseTime, 1000, 1 / MPEG_TS_CLOCK_FREQ_HZ, round);
- }
- function toMpegTsClockFromTimescale(baseTime, srcScale) {
- if (srcScale === void 0) {
- srcScale = 1;
- }
- return toTimescaleFromBase(baseTime, MPEG_TS_CLOCK_FREQ_HZ, 1 / srcScale);
- }
-
- var MAX_SILENT_FRAME_DURATION = 10 * 1000; // 10 seconds
- var AAC_SAMPLES_PER_FRAME = 1024;
- var MPEG_AUDIO_SAMPLE_PER_FRAME = 1152;
- var AC3_SAMPLES_PER_FRAME = 1536;
- var chromeVersion = null;
- var safariWebkitVersion = null;
- var MP4Remuxer = /*#__PURE__*/function () {
- function MP4Remuxer(observer, config, typeSupported, vendor) {
- this.observer = void 0;
- this.config = void 0;
- this.typeSupported = void 0;
- this.ISGenerated = false;
- this._initPTS = null;
- this._initDTS = null;
- this.nextAvcDts = null;
- this.nextAudioPts = null;
- this.videoSampleDuration = null;
- this.isAudioContiguous = false;
- this.isVideoContiguous = false;
- this.videoTrackConfig = void 0;
- this.observer = observer;
- this.config = config;
- this.typeSupported = typeSupported;
- this.ISGenerated = false;
- if (chromeVersion === null) {
- var userAgent = navigator.userAgent || '';
- var result = userAgent.match(/Chrome\/(\d+)/i);
- chromeVersion = result ? parseInt(result[1]) : 0;
- }
- if (safariWebkitVersion === null) {
- var _result = navigator.userAgent.match(/Safari\/(\d+)/i);
- safariWebkitVersion = _result ? parseInt(_result[1]) : 0;
- }
- }
- var _proto = MP4Remuxer.prototype;
- _proto.destroy = function destroy() {
- // @ts-ignore
- this.config = this.videoTrackConfig = this._initPTS = this._initDTS = null;
- };
- _proto.resetTimeStamp = function resetTimeStamp(defaultTimeStamp) {
- logger.log('[mp4-remuxer]: initPTS & initDTS reset');
- this._initPTS = this._initDTS = defaultTimeStamp;
- };
- _proto.resetNextTimestamp = function resetNextTimestamp() {
- logger.log('[mp4-remuxer]: reset next timestamp');
- this.isVideoContiguous = false;
- this.isAudioContiguous = false;
- };
- _proto.resetInitSegment = function resetInitSegment() {
- logger.log('[mp4-remuxer]: ISGenerated flag reset');
- this.ISGenerated = false;
- this.videoTrackConfig = undefined;
- };
- _proto.getVideoStartPts = function getVideoStartPts(videoSamples) {
- var rolloverDetected = false;
- var startPTS = videoSamples.reduce(function (minPTS, sample) {
- var delta = sample.pts - minPTS;
- if (delta < -4294967296) {
- // 2^32, see PTSNormalize for reasoning, but we're hitting a rollover here, and we don't want that to impact the timeOffset calculation
- rolloverDetected = true;
- return normalizePts(minPTS, sample.pts);
- } else if (delta > 0) {
- return minPTS;
- } else {
- return sample.pts;
- }
- }, videoSamples[0].pts);
- if (rolloverDetected) {
- logger.debug('PTS rollover detected');
- }
- return startPTS;
- };
- _proto.remux = function remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, accurateTimeOffset, flush, playlistType) {
- var video;
- var audio;
- var initSegment;
- var text;
- var id3;
- var independent;
- var audioTimeOffset = timeOffset;
- var videoTimeOffset = timeOffset;
-
- // If we're remuxing audio and video progressively, wait until we've received enough samples for each track before proceeding.
- // This is done to synchronize the audio and video streams. We know if the current segment will have samples if the "pid"
- // parameter is greater than -1. The pid is set when the PMT is parsed, which contains the tracks list.
- // However, if the initSegment has already been generated, or we've reached the end of a segment (flush),
- // then we can remux one track without waiting for the other.
- var hasAudio = audioTrack.pid > -1;
- var hasVideo = videoTrack.pid > -1;
- var length = videoTrack.samples.length;
- var enoughAudioSamples = audioTrack.samples.length > 0;
- var enoughVideoSamples = flush && length > 0 || length > 1;
- var canRemuxAvc = (!hasAudio || enoughAudioSamples) && (!hasVideo || enoughVideoSamples) || this.ISGenerated || flush;
- if (canRemuxAvc) {
- if (this.ISGenerated) {
- var _videoTrack$pixelRati, _config$pixelRatio, _videoTrack$pixelRati2, _config$pixelRatio2;
- var config = this.videoTrackConfig;
- if (config && (videoTrack.width !== config.width || videoTrack.height !== config.height || ((_videoTrack$pixelRati = videoTrack.pixelRatio) == null ? void 0 : _videoTrack$pixelRati[0]) !== ((_config$pixelRatio = config.pixelRatio) == null ? void 0 : _config$pixelRatio[0]) || ((_videoTrack$pixelRati2 = videoTrack.pixelRatio) == null ? void 0 : _videoTrack$pixelRati2[1]) !== ((_config$pixelRatio2 = config.pixelRatio) == null ? void 0 : _config$pixelRatio2[1]))) {
- this.resetInitSegment();
- }
- } else {
- initSegment = this.generateIS(audioTrack, videoTrack, timeOffset, accurateTimeOffset);
- }
- var isVideoContiguous = this.isVideoContiguous;
- var firstKeyFrameIndex = -1;
- var firstKeyFramePTS;
- if (enoughVideoSamples) {
- firstKeyFrameIndex = findKeyframeIndex(videoTrack.samples);
- if (!isVideoContiguous && this.config.forceKeyFrameOnDiscontinuity) {
- independent = true;
- if (firstKeyFrameIndex > 0) {
- logger.warn("[mp4-remuxer]: Dropped " + firstKeyFrameIndex + " out of " + length + " video samples due to a missing keyframe");
- var startPTS = this.getVideoStartPts(videoTrack.samples);
- videoTrack.samples = videoTrack.samples.slice(firstKeyFrameIndex);
- videoTrack.dropped += firstKeyFrameIndex;
- videoTimeOffset += (videoTrack.samples[0].pts - startPTS) / videoTrack.inputTimeScale;
- firstKeyFramePTS = videoTimeOffset;
- } else if (firstKeyFrameIndex === -1) {
- logger.warn("[mp4-remuxer]: No keyframe found out of " + length + " video samples");
- independent = false;
- }
- }
- }
- if (this.ISGenerated) {
- if (enoughAudioSamples && enoughVideoSamples) {
- // timeOffset is expected to be the offset of the first timestamp of this fragment (first DTS)
- // if first audio DTS is not aligned with first video DTS then we need to take that into account
- // when providing timeOffset to remuxAudio / remuxVideo. if we don't do that, there might be a permanent / small
- // drift between audio and video streams
- var _startPTS = this.getVideoStartPts(videoTrack.samples);
- var tsDelta = normalizePts(audioTrack.samples[0].pts, _startPTS) - _startPTS;
- var audiovideoTimestampDelta = tsDelta / videoTrack.inputTimeScale;
- audioTimeOffset += Math.max(0, audiovideoTimestampDelta);
- videoTimeOffset += Math.max(0, -audiovideoTimestampDelta);
- }
-
- // Purposefully remuxing audio before video, so that remuxVideo can use nextAudioPts, which is calculated in remuxAudio.
- if (enoughAudioSamples) {
- // if initSegment was generated without audio samples, regenerate it again
- if (!audioTrack.samplerate) {
- logger.warn('[mp4-remuxer]: regenerate InitSegment as audio detected');
- initSegment = this.generateIS(audioTrack, videoTrack, timeOffset, accurateTimeOffset);
- }
- audio = this.remuxAudio(audioTrack, audioTimeOffset, this.isAudioContiguous, accurateTimeOffset, hasVideo || enoughVideoSamples || playlistType === PlaylistLevelType.AUDIO ? videoTimeOffset : undefined);
- if (enoughVideoSamples) {
- var audioTrackLength = audio ? audio.endPTS - audio.startPTS : 0;
- // if initSegment was generated without video samples, regenerate it again
- if (!videoTrack.inputTimeScale) {
- logger.warn('[mp4-remuxer]: regenerate InitSegment as video detected');
- initSegment = this.generateIS(audioTrack, videoTrack, timeOffset, accurateTimeOffset);
- }
- video = this.remuxVideo(videoTrack, videoTimeOffset, isVideoContiguous, audioTrackLength);
- }
- } else if (enoughVideoSamples) {
- video = this.remuxVideo(videoTrack, videoTimeOffset, isVideoContiguous, 0);
- }
- if (video) {
- video.firstKeyFrame = firstKeyFrameIndex;
- video.independent = firstKeyFrameIndex !== -1;
- video.firstKeyFramePTS = firstKeyFramePTS;
- }
- }
- }
-
- // Allow ID3 and text to remux, even if more audio/video samples are required
- if (this.ISGenerated && this._initPTS && this._initDTS) {
- if (id3Track.samples.length) {
- id3 = flushTextTrackMetadataCueSamples(id3Track, timeOffset, this._initPTS, this._initDTS);
- }
- if (textTrack.samples.length) {
- text = flushTextTrackUserdataCueSamples(textTrack, timeOffset, this._initPTS);
- }
- }
- return {
- audio: audio,
- video: video,
- initSegment: initSegment,
- independent: independent,
- text: text,
- id3: id3
- };
- };
- _proto.generateIS = function generateIS(audioTrack, videoTrack, timeOffset, accurateTimeOffset) {
- var audioSamples = audioTrack.samples;
- var videoSamples = videoTrack.samples;
- var typeSupported = this.typeSupported;
- var tracks = {};
- var _initPTS = this._initPTS;
- var computePTSDTS = !_initPTS || accurateTimeOffset;
- var container = 'audio/mp4';
- var initPTS;
- var initDTS;
- var timescale;
- if (computePTSDTS) {
- initPTS = initDTS = Infinity;
- }
- if (audioTrack.config && audioSamples.length) {
- // let's use audio sampling rate as MP4 time scale.
- // rationale is that there is a integer nb of audio frames per audio sample (1024 for AAC)
- // using audio sampling rate here helps having an integer MP4 frame duration
- // this avoids potential rounding issue and AV sync issue
- audioTrack.timescale = audioTrack.samplerate;
- switch (audioTrack.segmentCodec) {
- case 'mp3':
- if (typeSupported.mpeg) {
- // Chrome and Safari
- container = 'audio/mpeg';
- audioTrack.codec = '';
- } else if (typeSupported.mp3) {
- // Firefox
- audioTrack.codec = 'mp3';
- }
- break;
- case 'ac3':
- audioTrack.codec = 'ac-3';
- break;
- }
- tracks.audio = {
- id: 'audio',
- container: container,
- codec: audioTrack.codec,
- initSegment: audioTrack.segmentCodec === 'mp3' && typeSupported.mpeg ? new Uint8Array(0) : MP4.initSegment([audioTrack]),
- metadata: {
- channelCount: audioTrack.channelCount
- }
- };
- if (computePTSDTS) {
- timescale = audioTrack.inputTimeScale;
- if (!_initPTS || timescale !== _initPTS.timescale) {
- // remember first PTS of this demuxing context. for audio, PTS = DTS
- initPTS = initDTS = audioSamples[0].pts - Math.round(timescale * timeOffset);
- } else {
- computePTSDTS = false;
- }
- }
- }
- if (videoTrack.sps && videoTrack.pps && videoSamples.length) {
- // let's use input time scale as MP4 video timescale
- // we use input time scale straight away to avoid rounding issues on frame duration / cts computation
- videoTrack.timescale = videoTrack.inputTimeScale;
- tracks.video = {
- id: 'main',
- container: 'video/mp4',
- codec: videoTrack.codec,
- initSegment: MP4.initSegment([videoTrack]),
- metadata: {
- width: videoTrack.width,
- height: videoTrack.height
- }
- };
- if (computePTSDTS) {
- timescale = videoTrack.inputTimeScale;
- if (!_initPTS || timescale !== _initPTS.timescale) {
- var startPTS = this.getVideoStartPts(videoSamples);
- var startOffset = Math.round(timescale * timeOffset);
- initDTS = Math.min(initDTS, normalizePts(videoSamples[0].dts, startPTS) - startOffset);
- initPTS = Math.min(initPTS, startPTS - startOffset);
- } else {
- computePTSDTS = false;
- }
- }
- this.videoTrackConfig = {
- width: videoTrack.width,
- height: videoTrack.height,
- pixelRatio: videoTrack.pixelRatio
- };
- }
- if (Object.keys(tracks).length) {
- this.ISGenerated = true;
- if (computePTSDTS) {
- this._initPTS = {
- baseTime: initPTS,
- timescale: timescale
- };
- this._initDTS = {
- baseTime: initDTS,
- timescale: timescale
- };
- } else {
- initPTS = timescale = undefined;
- }
- return {
- tracks: tracks,
- initPTS: initPTS,
- timescale: timescale
- };
- }
- };
- _proto.remuxVideo = function remuxVideo(track, timeOffset, contiguous, audioTrackLength) {
- var timeScale = track.inputTimeScale;
- var inputSamples = track.samples;
- var outputSamples = [];
- var nbSamples = inputSamples.length;
- var initPTS = this._initPTS;
- var nextAvcDts = this.nextAvcDts;
- var offset = 8;
- var mp4SampleDuration = this.videoSampleDuration;
- var firstDTS;
- var lastDTS;
- var minPTS = Number.POSITIVE_INFINITY;
- var maxPTS = Number.NEGATIVE_INFINITY;
- var sortSamples = false;
-
- // if parsed fragment is contiguous with last one, let's use last DTS value as reference
- if (!contiguous || nextAvcDts === null) {
- var pts = timeOffset * timeScale;
- var cts = inputSamples[0].pts - normalizePts(inputSamples[0].dts, inputSamples[0].pts);
- if (chromeVersion && nextAvcDts !== null && Math.abs(pts - cts - nextAvcDts) < 15000) {
- // treat as contigous to adjust samples that would otherwise produce video buffer gaps in Chrome
- contiguous = true;
- } else {
- // if not contiguous, let's use target timeOffset
- nextAvcDts = pts - cts;
- }
- }
-
- // PTS is coded on 33bits, and can loop from -2^32 to 2^32
- // PTSNormalize will make PTS/DTS value monotonic, we use last known DTS value as reference value
- var initTime = initPTS.baseTime * timeScale / initPTS.timescale;
- for (var i = 0; i < nbSamples; i++) {
- var sample = inputSamples[i];
- sample.pts = normalizePts(sample.pts - initTime, nextAvcDts);
- sample.dts = normalizePts(sample.dts - initTime, nextAvcDts);
- if (sample.dts < inputSamples[i > 0 ? i - 1 : i].dts) {
- sortSamples = true;
- }
- }
-
- // sort video samples by DTS then PTS then demux id order
- if (sortSamples) {
- inputSamples.sort(function (a, b) {
- var deltadts = a.dts - b.dts;
- var deltapts = a.pts - b.pts;
- return deltadts || deltapts;
- });
- }
-
- // Get first/last DTS
- firstDTS = inputSamples[0].dts;
- lastDTS = inputSamples[inputSamples.length - 1].dts;
-
- // Sample duration (as expected by trun MP4 boxes), should be the delta between sample DTS
- // set this constant duration as being the avg delta between consecutive DTS.
- var inputDuration = lastDTS - firstDTS;
- var averageSampleDuration = inputDuration ? Math.round(inputDuration / (nbSamples - 1)) : mp4SampleDuration || track.inputTimeScale / 30;
-
- // if fragment are contiguous, detect hole/overlapping between fragments
- if (contiguous) {
- // check timestamp continuity across consecutive fragments (this is to remove inter-fragment gap/hole)
- var delta = firstDTS - nextAvcDts;
- var foundHole = delta > averageSampleDuration;
- var foundOverlap = delta < -1;
- if (foundHole || foundOverlap) {
- if (foundHole) {
- logger.warn("AVC: " + toMsFromMpegTsClock(delta, true) + " ms (" + delta + "dts) hole between fragments detected at " + timeOffset.toFixed(3));
- } else {
- logger.warn("AVC: " + toMsFromMpegTsClock(-delta, true) + " ms (" + delta + "dts) overlapping between fragments detected at " + timeOffset.toFixed(3));
- }
- if (!foundOverlap || nextAvcDts >= inputSamples[0].pts || chromeVersion) {
- firstDTS = nextAvcDts;
- var firstPTS = inputSamples[0].pts - delta;
- if (foundHole) {
- inputSamples[0].dts = firstDTS;
- inputSamples[0].pts = firstPTS;
- } else {
- for (var _i = 0; _i < inputSamples.length; _i++) {
- if (inputSamples[_i].dts > firstPTS) {
- break;
- }
- inputSamples[_i].dts -= delta;
- inputSamples[_i].pts -= delta;
- }
- }
- logger.log("Video: Initial PTS/DTS adjusted: " + toMsFromMpegTsClock(firstPTS, true) + "/" + toMsFromMpegTsClock(firstDTS, true) + ", delta: " + toMsFromMpegTsClock(delta, true) + " ms");
- }
- }
- }
- firstDTS = Math.max(0, firstDTS);
- var nbNalu = 0;
- var naluLen = 0;
- var dtsStep = firstDTS;
- for (var _i2 = 0; _i2 < nbSamples; _i2++) {
- // compute total/avc sample length and nb of NAL units
- var _sample = inputSamples[_i2];
- var units = _sample.units;
- var nbUnits = units.length;
- var sampleLen = 0;
- for (var j = 0; j < nbUnits; j++) {
- sampleLen += units[j].data.length;
- }
- naluLen += sampleLen;
- nbNalu += nbUnits;
- _sample.length = sampleLen;
-
- // ensure sample monotonic DTS
- if (_sample.dts < dtsStep) {
- _sample.dts = dtsStep;
- dtsStep += averageSampleDuration / 4 | 0 || 1;
- } else {
- dtsStep = _sample.dts;
- }
- minPTS = Math.min(_sample.pts, minPTS);
- maxPTS = Math.max(_sample.pts, maxPTS);
- }
- lastDTS = inputSamples[nbSamples - 1].dts;
-
- /* concatenate the video data and construct the mdat in place
- (need 8 more bytes to fill length and mpdat type) */
- var mdatSize = naluLen + 4 * nbNalu + 8;
- var mdat;
- try {
- mdat = new Uint8Array(mdatSize);
- } catch (err) {
- this.observer.emit(Events.ERROR, Events.ERROR, {
- type: ErrorTypes.MUX_ERROR,
- details: ErrorDetails.REMUX_ALLOC_ERROR,
- fatal: false,
- error: err,
- bytes: mdatSize,
- reason: "fail allocating video mdat " + mdatSize
- });
- return;
- }
- var view = new DataView(mdat.buffer);
- view.setUint32(0, mdatSize);
- mdat.set(MP4.types.mdat, 4);
- var stretchedLastFrame = false;
- var minDtsDelta = Number.POSITIVE_INFINITY;
- var minPtsDelta = Number.POSITIVE_INFINITY;
- var maxDtsDelta = Number.NEGATIVE_INFINITY;
- var maxPtsDelta = Number.NEGATIVE_INFINITY;
- for (var _i3 = 0; _i3 < nbSamples; _i3++) {
- var _VideoSample = inputSamples[_i3];
- var VideoSampleUnits = _VideoSample.units;
- var mp4SampleLength = 0;
- // convert NALU bitstream to MP4 format (prepend NALU with size field)
- for (var _j = 0, _nbUnits = VideoSampleUnits.length; _j < _nbUnits; _j++) {
- var unit = VideoSampleUnits[_j];
- var unitData = unit.data;
- var unitDataLen = unit.data.byteLength;
- view.setUint32(offset, unitDataLen);
- offset += 4;
- mdat.set(unitData, offset);
- offset += unitDataLen;
- mp4SampleLength += 4 + unitDataLen;
- }
-
- // expected sample duration is the Decoding Timestamp diff of consecutive samples
- var ptsDelta = void 0;
- if (_i3 < nbSamples - 1) {
- mp4SampleDuration = inputSamples[_i3 + 1].dts - _VideoSample.dts;
- ptsDelta = inputSamples[_i3 + 1].pts - _VideoSample.pts;
- } else {
- var config = this.config;
- var lastFrameDuration = _i3 > 0 ? _VideoSample.dts - inputSamples[_i3 - 1].dts : averageSampleDuration;
- ptsDelta = _i3 > 0 ? _VideoSample.pts - inputSamples[_i3 - 1].pts : averageSampleDuration;
- if (config.stretchShortVideoTrack && this.nextAudioPts !== null) {
- // In some cases, a segment's audio track duration may exceed the video track duration.
- // Since we've already remuxed audio, and we know how long the audio track is, we look to
- // see if the delta to the next segment is longer than maxBufferHole.
- // If so, playback would potentially get stuck, so we artificially inflate
- // the duration of the last frame to minimize any potential gap between segments.
- var gapTolerance = Math.floor(config.maxBufferHole * timeScale);
- var deltaToFrameEnd = (audioTrackLength ? minPTS + audioTrackLength * timeScale : this.nextAudioPts) - _VideoSample.pts;
- if (deltaToFrameEnd > gapTolerance) {
- // We subtract lastFrameDuration from deltaToFrameEnd to try to prevent any video
- // frame overlap. maxBufferHole should be >> lastFrameDuration anyway.
- mp4SampleDuration = deltaToFrameEnd - lastFrameDuration;
- if (mp4SampleDuration < 0) {
- mp4SampleDuration = lastFrameDuration;
- } else {
- stretchedLastFrame = true;
- }
- logger.log("[mp4-remuxer]: It is approximately " + deltaToFrameEnd / 90 + " ms to the next segment; using duration " + mp4SampleDuration / 90 + " ms for the last video frame.");
- } else {
- mp4SampleDuration = lastFrameDuration;
- }
- } else {
- mp4SampleDuration = lastFrameDuration;
- }
- }
- var compositionTimeOffset = Math.round(_VideoSample.pts - _VideoSample.dts);
- minDtsDelta = Math.min(minDtsDelta, mp4SampleDuration);
- maxDtsDelta = Math.max(maxDtsDelta, mp4SampleDuration);
- minPtsDelta = Math.min(minPtsDelta, ptsDelta);
- maxPtsDelta = Math.max(maxPtsDelta, ptsDelta);
- outputSamples.push(new Mp4Sample(_VideoSample.key, mp4SampleDuration, mp4SampleLength, compositionTimeOffset));
- }
- if (outputSamples.length) {
- if (chromeVersion) {
- if (chromeVersion < 70) {
- // Chrome workaround, mark first sample as being a Random Access Point (keyframe) to avoid sourcebuffer append issue
- // https://code.google.com/p/chromium/issues/detail?id=229412
- var flags = outputSamples[0].flags;
- flags.dependsOn = 2;
- flags.isNonSync = 0;
- }
- } else if (safariWebkitVersion) {
- // Fix for "CNN special report, with CC" in test-streams (Safari browser only)
- // Ignore DTS when frame durations are irregular. Safari MSE does not handle this leading to gaps.
- if (maxPtsDelta - minPtsDelta < maxDtsDelta - minDtsDelta && averageSampleDuration / maxDtsDelta < 0.025 && outputSamples[0].cts === 0) {
- logger.warn('Found irregular gaps in sample duration. Using PTS instead of DTS to determine MP4 sample duration.');
- var dts = firstDTS;
- for (var _i4 = 0, len = outputSamples.length; _i4 < len; _i4++) {
- var nextDts = dts + outputSamples[_i4].duration;
- var _pts = dts + outputSamples[_i4].cts;
- if (_i4 < len - 1) {
- var nextPts = nextDts + outputSamples[_i4 + 1].cts;
- outputSamples[_i4].duration = nextPts - _pts;
- } else {
- outputSamples[_i4].duration = _i4 ? outputSamples[_i4 - 1].duration : averageSampleDuration;
- }
- outputSamples[_i4].cts = 0;
- dts = nextDts;
- }
- }
- }
- }
- // next AVC sample DTS should be equal to last sample DTS + last sample duration (in PES timescale)
- mp4SampleDuration = stretchedLastFrame || !mp4SampleDuration ? averageSampleDuration : mp4SampleDuration;
- this.nextAvcDts = nextAvcDts = lastDTS + mp4SampleDuration;
- this.videoSampleDuration = mp4SampleDuration;
- this.isVideoContiguous = true;
- var moof = MP4.moof(track.sequenceNumber++, firstDTS, _extends({}, track, {
- samples: outputSamples
- }));
- var type = 'video';
- var data = {
- data1: moof,
- data2: mdat,
- startPTS: minPTS / timeScale,
- endPTS: (maxPTS + mp4SampleDuration) / timeScale,
- startDTS: firstDTS / timeScale,
- endDTS: nextAvcDts / timeScale,
- type: type,
- hasAudio: false,
- hasVideo: true,
- nb: outputSamples.length,
- dropped: track.dropped
- };
- track.samples = [];
- track.dropped = 0;
- return data;
- };
- _proto.getSamplesPerFrame = function getSamplesPerFrame(track) {
- switch (track.segmentCodec) {
- case 'mp3':
- return MPEG_AUDIO_SAMPLE_PER_FRAME;
- case 'ac3':
- return AC3_SAMPLES_PER_FRAME;
- default:
- return AAC_SAMPLES_PER_FRAME;
- }
- };
- _proto.remuxAudio = function remuxAudio(track, timeOffset, contiguous, accurateTimeOffset, videoTimeOffset) {
- var inputTimeScale = track.inputTimeScale;
- var mp4timeScale = track.samplerate ? track.samplerate : inputTimeScale;
- var scaleFactor = inputTimeScale / mp4timeScale;
- var mp4SampleDuration = this.getSamplesPerFrame(track);
- var inputSampleDuration = mp4SampleDuration * scaleFactor;
- var initPTS = this._initPTS;
- var rawMPEG = track.segmentCodec === 'mp3' && this.typeSupported.mpeg;
- var outputSamples = [];
- var alignedWithVideo = videoTimeOffset !== undefined;
- var inputSamples = track.samples;
- var offset = rawMPEG ? 0 : 8;
- var nextAudioPts = this.nextAudioPts || -1;
-
- // window.audioSamples ? window.audioSamples.push(inputSamples.map(s => s.pts)) : (window.audioSamples = [inputSamples.map(s => s.pts)]);
-
- // for audio samples, also consider consecutive fragments as being contiguous (even if a level switch occurs),
- // for sake of clarity:
- // consecutive fragments are frags with
- // - less than 100ms gaps between new time offset (if accurate) and next expected PTS OR
- // - less than 20 audio frames distance
- // contiguous fragments are consecutive fragments from same quality level (same level, new SN = old SN + 1)
- // this helps ensuring audio continuity
- // and this also avoids audio glitches/cut when switching quality, or reporting wrong duration on first audio frame
- var timeOffsetMpegTS = timeOffset * inputTimeScale;
- var initTime = initPTS.baseTime * inputTimeScale / initPTS.timescale;
- this.isAudioContiguous = contiguous = contiguous || inputSamples.length && nextAudioPts > 0 && (accurateTimeOffset && Math.abs(timeOffsetMpegTS - nextAudioPts) < 9000 || Math.abs(normalizePts(inputSamples[0].pts - initTime, timeOffsetMpegTS) - nextAudioPts) < 20 * inputSampleDuration);
-
- // compute normalized PTS
- inputSamples.forEach(function (sample) {
- sample.pts = normalizePts(sample.pts - initTime, timeOffsetMpegTS);
- });
- if (!contiguous || nextAudioPts < 0) {
- // filter out sample with negative PTS that are not playable anyway
- // if we don't remove these negative samples, they will shift all audio samples forward.
- // leading to audio overlap between current / next fragment
- inputSamples = inputSamples.filter(function (sample) {
- return sample.pts >= 0;
- });
-
- // in case all samples have negative PTS, and have been filtered out, return now
- if (!inputSamples.length) {
- return;
- }
- if (videoTimeOffset === 0) {
- // Set the start to 0 to match video so that start gaps larger than inputSampleDuration are filled with silence
- nextAudioPts = 0;
- } else if (accurateTimeOffset && !alignedWithVideo) {
- // When not seeking, not live, and LevelDetails.PTSKnown, use fragment start as predicted next audio PTS
- nextAudioPts = Math.max(0, timeOffsetMpegTS);
- } else {
- // if frags are not contiguous and if we cant trust time offset, let's use first sample PTS as next audio PTS
- nextAudioPts = inputSamples[0].pts;
- }
- }
-
- // If the audio track is missing samples, the frames seem to get "left-shifted" within the
- // resulting mp4 segment, causing sync issues and leaving gaps at the end of the audio segment.
- // In an effort to prevent this from happening, we inject frames here where there are gaps.
- // When possible, we inject a silent frame; when that's not possible, we duplicate the last
- // frame.
-
- if (track.segmentCodec === 'aac') {
- var maxAudioFramesDrift = this.config.maxAudioFramesDrift;
- for (var i = 0, nextPts = nextAudioPts; i < inputSamples.length; i++) {
- // First, let's see how far off this frame is from where we expect it to be
- var sample = inputSamples[i];
- var pts = sample.pts;
- var delta = pts - nextPts;
- var duration = Math.abs(1000 * delta / inputTimeScale);
-
- // When remuxing with video, if we're overlapping by more than a duration, drop this sample to stay in sync
- if (delta <= -maxAudioFramesDrift * inputSampleDuration && alignedWithVideo) {
- if (i === 0) {
- logger.warn("Audio frame @ " + (pts / inputTimeScale).toFixed(3) + "s overlaps nextAudioPts by " + Math.round(1000 * delta / inputTimeScale) + " ms.");
- this.nextAudioPts = nextAudioPts = nextPts = pts;
- }
- } // eslint-disable-line brace-style
-
- // Insert missing frames if:
- // 1: We're more than maxAudioFramesDrift frame away
- // 2: Not more than MAX_SILENT_FRAME_DURATION away
- // 3: currentTime (aka nextPtsNorm) is not 0
- // 4: remuxing with video (videoTimeOffset !== undefined)
- else if (delta >= maxAudioFramesDrift * inputSampleDuration && duration < MAX_SILENT_FRAME_DURATION && alignedWithVideo) {
- var missing = Math.round(delta / inputSampleDuration);
- // Adjust nextPts so that silent samples are aligned with media pts. This will prevent media samples from
- // later being shifted if nextPts is based on timeOffset and delta is not a multiple of inputSampleDuration.
- nextPts = pts - missing * inputSampleDuration;
- if (nextPts < 0) {
- missing--;
- nextPts += inputSampleDuration;
- }
- if (i === 0) {
- this.nextAudioPts = nextAudioPts = nextPts;
- }
- logger.warn("[mp4-remuxer]: Injecting " + missing + " audio frame @ " + (nextPts / inputTimeScale).toFixed(3) + "s due to " + Math.round(1000 * delta / inputTimeScale) + " ms gap.");
- for (var j = 0; j < missing; j++) {
- var newStamp = Math.max(nextPts, 0);
- var fillFrame = AAC.getSilentFrame(track.manifestCodec || track.codec, track.channelCount);
- if (!fillFrame) {
- logger.log('[mp4-remuxer]: Unable to get silent frame for given audio codec; duplicating last frame instead.');
- fillFrame = sample.unit.subarray();
- }
- inputSamples.splice(i, 0, {
- unit: fillFrame,
- pts: newStamp
- });
- nextPts += inputSampleDuration;
- i++;
- }
- }
- sample.pts = nextPts;
- nextPts += inputSampleDuration;
- }
- }
- var firstPTS = null;
- var lastPTS = null;
- var mdat;
- var mdatSize = 0;
- var sampleLength = inputSamples.length;
- while (sampleLength--) {
- mdatSize += inputSamples[sampleLength].unit.byteLength;
- }
- for (var _j2 = 0, _nbSamples = inputSamples.length; _j2 < _nbSamples; _j2++) {
- var audioSample = inputSamples[_j2];
- var unit = audioSample.unit;
- var _pts2 = audioSample.pts;
- if (lastPTS !== null) {
- // If we have more than one sample, set the duration of the sample to the "real" duration; the PTS diff with
- // the previous sample
- var prevSample = outputSamples[_j2 - 1];
- prevSample.duration = Math.round((_pts2 - lastPTS) / scaleFactor);
- } else {
- if (contiguous && track.segmentCodec === 'aac') {
- // set PTS/DTS to expected PTS/DTS
- _pts2 = nextAudioPts;
- }
- // remember first PTS of our audioSamples
- firstPTS = _pts2;
- if (mdatSize > 0) {
- /* concatenate the audio data and construct the mdat in place
- (need 8 more bytes to fill length and mdat type) */
- mdatSize += offset;
- try {
- mdat = new Uint8Array(mdatSize);
- } catch (err) {
- this.observer.emit(Events.ERROR, Events.ERROR, {
- type: ErrorTypes.MUX_ERROR,
- details: ErrorDetails.REMUX_ALLOC_ERROR,
- fatal: false,
- error: err,
- bytes: mdatSize,
- reason: "fail allocating audio mdat " + mdatSize
- });
- return;
- }
- if (!rawMPEG) {
- var view = new DataView(mdat.buffer);
- view.setUint32(0, mdatSize);
- mdat.set(MP4.types.mdat, 4);
- }
- } else {
- // no audio samples
- return;
- }
- }
- mdat.set(unit, offset);
- var unitLen = unit.byteLength;
- offset += unitLen;
- // Default the sample's duration to the computed mp4SampleDuration, which will either be 1024 for AAC or 1152 for MPEG
- // In the case that we have 1 sample, this will be the duration. If we have more than one sample, the duration
- // becomes the PTS diff with the previous sample
- outputSamples.push(new Mp4Sample(true, mp4SampleDuration, unitLen, 0));
- lastPTS = _pts2;
- }
-
- // We could end up with no audio samples if all input samples were overlapping with the previously remuxed ones
- var nbSamples = outputSamples.length;
- if (!nbSamples) {
- return;
- }
-
- // The next audio sample PTS should be equal to last sample PTS + duration
- var lastSample = outputSamples[outputSamples.length - 1];
- this.nextAudioPts = nextAudioPts = lastPTS + scaleFactor * lastSample.duration;
-
- // Set the track samples from inputSamples to outputSamples before remuxing
- var moof = rawMPEG ? new Uint8Array(0) : MP4.moof(track.sequenceNumber++, firstPTS / scaleFactor, _extends({}, track, {
- samples: outputSamples
- }));
-
- // Clear the track samples. This also clears the samples array in the demuxer, since the reference is shared
- track.samples = [];
- var start = firstPTS / inputTimeScale;
- var end = nextAudioPts / inputTimeScale;
- var type = 'audio';
- var audioData = {
- data1: moof,
- data2: mdat,
- startPTS: start,
- endPTS: end,
- startDTS: start,
- endDTS: end,
- type: type,
- hasAudio: true,
- hasVideo: false,
- nb: nbSamples
- };
- this.isAudioContiguous = true;
- return audioData;
- };
- _proto.remuxEmptyAudio = function remuxEmptyAudio(track, timeOffset, contiguous, videoData) {
- var inputTimeScale = track.inputTimeScale;
- var mp4timeScale = track.samplerate ? track.samplerate : inputTimeScale;
- var scaleFactor = inputTimeScale / mp4timeScale;
- var nextAudioPts = this.nextAudioPts;
- // sync with video's timestamp
- var initDTS = this._initDTS;
- var init90kHz = initDTS.baseTime * 90000 / initDTS.timescale;
- var startDTS = (nextAudioPts !== null ? nextAudioPts : videoData.startDTS * inputTimeScale) + init90kHz;
- var endDTS = videoData.endDTS * inputTimeScale + init90kHz;
- // one sample's duration value
- var frameDuration = scaleFactor * AAC_SAMPLES_PER_FRAME;
- // samples count of this segment's duration
- var nbSamples = Math.ceil((endDTS - startDTS) / frameDuration);
- // silent frame
- var silentFrame = AAC.getSilentFrame(track.manifestCodec || track.codec, track.channelCount);
- logger.warn('[mp4-remuxer]: remux empty Audio');
- // Can't remux if we can't generate a silent frame...
- if (!silentFrame) {
- logger.trace('[mp4-remuxer]: Unable to remuxEmptyAudio since we were unable to get a silent frame for given audio codec');
- return;
- }
- var samples = [];
- for (var i = 0; i < nbSamples; i++) {
- var stamp = startDTS + i * frameDuration;
- samples.push({
- unit: silentFrame,
- pts: stamp,
- dts: stamp
- });
- }
- track.samples = samples;
- return this.remuxAudio(track, timeOffset, contiguous, false);
- };
- return MP4Remuxer;
- }();
- function normalizePts(value, reference) {
- var offset;
- if (reference === null) {
- return value;
- }
- if (reference < value) {
- // - 2^33
- offset = -8589934592;
- } else {
- // + 2^33
- offset = 8589934592;
- }
- /* PTS is 33bit (from 0 to 2^33 -1)
- if diff between value and reference is bigger than half of the amplitude (2^32) then it means that
- PTS looping occured. fill the gap */
- while (Math.abs(value - reference) > 4294967296) {
- value += offset;
- }
- return value;
- }
- function findKeyframeIndex(samples) {
- for (var i = 0; i < samples.length; i++) {
- if (samples[i].key) {
- return i;
- }
- }
- return -1;
- }
- function flushTextTrackMetadataCueSamples(track, timeOffset, initPTS, initDTS) {
- var length = track.samples.length;
- if (!length) {
- return;
- }
- var inputTimeScale = track.inputTimeScale;
- for (var index = 0; index < length; index++) {
- var sample = track.samples[index];
- // setting id3 pts, dts to relative time
- // using this._initPTS and this._initDTS to calculate relative time
- sample.pts = normalizePts(sample.pts - initPTS.baseTime * inputTimeScale / initPTS.timescale, timeOffset * inputTimeScale) / inputTimeScale;
- sample.dts = normalizePts(sample.dts - initDTS.baseTime * inputTimeScale / initDTS.timescale, timeOffset * inputTimeScale) / inputTimeScale;
- }
- var samples = track.samples;
- track.samples = [];
- return {
- samples: samples
- };
- }
- function flushTextTrackUserdataCueSamples(track, timeOffset, initPTS) {
- var length = track.samples.length;
- if (!length) {
- return;
- }
- var inputTimeScale = track.inputTimeScale;
- for (var index = 0; index < length; index++) {
- var sample = track.samples[index];
- // setting text pts, dts to relative time
- // using this._initPTS and this._initDTS to calculate relative time
- sample.pts = normalizePts(sample.pts - initPTS.baseTime * inputTimeScale / initPTS.timescale, timeOffset * inputTimeScale) / inputTimeScale;
- }
- track.samples.sort(function (a, b) {
- return a.pts - b.pts;
- });
- var samples = track.samples;
- track.samples = [];
- return {
- samples: samples
- };
- }
- var Mp4Sample = function Mp4Sample(isKeyframe, duration, size, cts) {
- this.size = void 0;
- this.duration = void 0;
- this.cts = void 0;
- this.flags = void 0;
- this.duration = duration;
- this.size = size;
- this.cts = cts;
- this.flags = {
- isLeading: 0,
- isDependedOn: 0,
- hasRedundancy: 0,
- degradPrio: 0,
- dependsOn: isKeyframe ? 2 : 1,
- isNonSync: isKeyframe ? 0 : 1
- };
- };
-
- var PassThroughRemuxer = /*#__PURE__*/function () {
- function PassThroughRemuxer() {
- this.emitInitSegment = false;
- this.audioCodec = void 0;
- this.videoCodec = void 0;
- this.initData = void 0;
- this.initPTS = null;
- this.initTracks = void 0;
- this.lastEndTime = null;
- }
- var _proto = PassThroughRemuxer.prototype;
- _proto.destroy = function destroy() {};
- _proto.resetTimeStamp = function resetTimeStamp(defaultInitPTS) {
- this.initPTS = defaultInitPTS;
- this.lastEndTime = null;
- };
- _proto.resetNextTimestamp = function resetNextTimestamp() {
- this.lastEndTime = null;
- };
- _proto.resetInitSegment = function resetInitSegment(initSegment, audioCodec, videoCodec, decryptdata) {
- this.audioCodec = audioCodec;
- this.videoCodec = videoCodec;
- this.generateInitSegment(patchEncyptionData(initSegment, decryptdata));
- this.emitInitSegment = true;
- };
- _proto.generateInitSegment = function generateInitSegment(initSegment) {
- var audioCodec = this.audioCodec,
- videoCodec = this.videoCodec;
- if (!(initSegment != null && initSegment.byteLength)) {
- this.initTracks = undefined;
- this.initData = undefined;
- return;
- }
- var initData = this.initData = parseInitSegment(initSegment);
-
- // Get codec from initSegment or fallback to default
- if (initData.audio) {
- audioCodec = getParsedTrackCodec(initData.audio, ElementaryStreamTypes.AUDIO);
- }
- if (initData.video) {
- videoCodec = getParsedTrackCodec(initData.video, ElementaryStreamTypes.VIDEO);
- }
- var tracks = {};
- if (initData.audio && initData.video) {
- tracks.audiovideo = {
- container: 'video/mp4',
- codec: audioCodec + ',' + videoCodec,
- initSegment: initSegment,
- id: 'main'
- };
- } else if (initData.audio) {
- tracks.audio = {
- container: 'audio/mp4',
- codec: audioCodec,
- initSegment: initSegment,
- id: 'audio'
- };
- } else if (initData.video) {
- tracks.video = {
- container: 'video/mp4',
- codec: videoCodec,
- initSegment: initSegment,
- id: 'main'
- };
- } else {
- logger.warn('[passthrough-remuxer.ts]: initSegment does not contain moov or trak boxes.');
- }
- this.initTracks = tracks;
- };
- _proto.remux = function remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, accurateTimeOffset) {
- var _initData, _initData2;
- var initPTS = this.initPTS,
- lastEndTime = this.lastEndTime;
- var result = {
- audio: undefined,
- video: undefined,
- text: textTrack,
- id3: id3Track,
- initSegment: undefined
- };
-
- // If we haven't yet set a lastEndDTS, or it was reset, set it to the provided timeOffset. We want to use the
- // lastEndDTS over timeOffset whenever possible; during progressive playback, the media source will not update
- // the media duration (which is what timeOffset is provided as) before we need to process the next chunk.
- if (!isFiniteNumber(lastEndTime)) {
- lastEndTime = this.lastEndTime = timeOffset || 0;
- }
-
- // The binary segment data is added to the videoTrack in the mp4demuxer. We don't check to see if the data is only
- // audio or video (or both); adding it to video was an arbitrary choice.
- var data = videoTrack.samples;
- if (!(data != null && data.length)) {
- return result;
- }
- var initSegment = {
- initPTS: undefined,
- timescale: 1
- };
- var initData = this.initData;
- if (!((_initData = initData) != null && _initData.length)) {
- this.generateInitSegment(data);
- initData = this.initData;
- }
- if (!((_initData2 = initData) != null && _initData2.length)) {
- // We can't remux if the initSegment could not be generated
- logger.warn('[passthrough-remuxer.ts]: Failed to generate initSegment.');
- return result;
- }
- if (this.emitInitSegment) {
- initSegment.tracks = this.initTracks;
- this.emitInitSegment = false;
- }
- var duration = getDuration(data, initData);
- var startDTS = getStartDTS(initData, data);
- var decodeTime = startDTS === null ? timeOffset : startDTS;
- if (isInvalidInitPts(initPTS, decodeTime, timeOffset, duration) || initSegment.timescale !== initPTS.timescale && accurateTimeOffset) {
- initSegment.initPTS = decodeTime - timeOffset;
- if (initPTS && initPTS.timescale === 1) {
- logger.warn("Adjusting initPTS by " + (initSegment.initPTS - initPTS.baseTime));
- }
- this.initPTS = initPTS = {
- baseTime: initSegment.initPTS,
- timescale: 1
- };
- }
- var startTime = audioTrack ? decodeTime - initPTS.baseTime / initPTS.timescale : lastEndTime;
- var endTime = startTime + duration;
- offsetStartDTS(initData, data, initPTS.baseTime / initPTS.timescale);
- if (duration > 0) {
- this.lastEndTime = endTime;
- } else {
- logger.warn('Duration parsed from mp4 should be greater than zero');
- this.resetNextTimestamp();
- }
- var hasAudio = !!initData.audio;
- var hasVideo = !!initData.video;
- var type = '';
- if (hasAudio) {
- type += 'audio';
- }
- if (hasVideo) {
- type += 'video';
- }
- var track = {
- data1: data,
- startPTS: startTime,
- startDTS: startTime,
- endPTS: endTime,
- endDTS: endTime,
- type: type,
- hasAudio: hasAudio,
- hasVideo: hasVideo,
- nb: 1,
- dropped: 0
- };
- result.audio = track.type === 'audio' ? track : undefined;
- result.video = track.type !== 'audio' ? track : undefined;
- result.initSegment = initSegment;
- result.id3 = flushTextTrackMetadataCueSamples(id3Track, timeOffset, initPTS, initPTS);
- if (textTrack.samples.length) {
- result.text = flushTextTrackUserdataCueSamples(textTrack, timeOffset, initPTS);
- }
- return result;
- };
- return PassThroughRemuxer;
- }();
- function isInvalidInitPts(initPTS, startDTS, timeOffset, duration) {
- if (initPTS === null) {
- return true;
- }
- // InitPTS is invalid when distance from program would be more than segment duration or a minimum of one second
- var minDuration = Math.max(duration, 1);
- var startTime = startDTS - initPTS.baseTime / initPTS.timescale;
- return Math.abs(startTime - timeOffset) > minDuration;
- }
- function getParsedTrackCodec(track, type) {
- var parsedCodec = track == null ? void 0 : track.codec;
- if (parsedCodec && parsedCodec.length > 4) {
- return parsedCodec;
- }
- if (type === ElementaryStreamTypes.AUDIO) {
- if (parsedCodec === 'ec-3' || parsedCodec === 'ac-3' || parsedCodec === 'alac') {
- return parsedCodec;
- }
- if (parsedCodec === 'fLaC' || parsedCodec === 'Opus') {
- // Opting not to get `preferManagedMediaSource` from player config for isSupported() check for simplicity
- var preferManagedMediaSource = false;
- return getCodecCompatibleName(parsedCodec, preferManagedMediaSource);
- }
- var result = 'mp4a.40.5';
- logger.info("Parsed audio codec \"" + parsedCodec + "\" or audio object type not handled. Using \"" + result + "\"");
- return result;
- }
- // Provide defaults based on codec type
- // This allows for some playback of some fmp4 playlists without CODECS defined in manifest
- logger.warn("Unhandled video codec \"" + parsedCodec + "\"");
- if (parsedCodec === 'hvc1' || parsedCodec === 'hev1') {
- return 'hvc1.1.6.L120.90';
- }
- if (parsedCodec === 'av01') {
- return 'av01.0.04M.08';
- }
- return 'avc1.42e01e';
- }
-
- var now;
- // performance.now() not available on WebWorker, at least on Safari Desktop
- try {
- now = self.performance.now.bind(self.performance);
- } catch (err) {
- logger.debug('Unable to use Performance API on this environment');
- now = optionalSelf == null ? void 0 : optionalSelf.Date.now;
- }
- var muxConfig = [{
- demux: MP4Demuxer,
- remux: PassThroughRemuxer
- }, {
- demux: TSDemuxer,
- remux: MP4Remuxer
- }, {
- demux: AACDemuxer,
- remux: MP4Remuxer
- }, {
- demux: MP3Demuxer,
- remux: MP4Remuxer
- }];
- {
- muxConfig.splice(2, 0, {
- demux: AC3Demuxer,
- remux: MP4Remuxer
- });
- }
- var Transmuxer = /*#__PURE__*/function () {
- function Transmuxer(observer, typeSupported, config, vendor, id) {
- this.async = false;
- this.observer = void 0;
- this.typeSupported = void 0;
- this.config = void 0;
- this.vendor = void 0;
- this.id = void 0;
- this.demuxer = void 0;
- this.remuxer = void 0;
- this.decrypter = void 0;
- this.probe = void 0;
- this.decryptionPromise = null;
- this.transmuxConfig = void 0;
- this.currentTransmuxState = void 0;
- this.observer = observer;
- this.typeSupported = typeSupported;
- this.config = config;
- this.vendor = vendor;
- this.id = id;
- }
- var _proto = Transmuxer.prototype;
- _proto.configure = function configure(transmuxConfig) {
- this.transmuxConfig = transmuxConfig;
- if (this.decrypter) {
- this.decrypter.reset();
- }
- };
- _proto.push = function push(data, decryptdata, chunkMeta, state) {
- var _this = this;
- var stats = chunkMeta.transmuxing;
- stats.executeStart = now();
- var uintData = new Uint8Array(data);
- var currentTransmuxState = this.currentTransmuxState,
- transmuxConfig = this.transmuxConfig;
- if (state) {
- this.currentTransmuxState = state;
- }
- var _ref = state || currentTransmuxState,
- contiguous = _ref.contiguous,
- discontinuity = _ref.discontinuity,
- trackSwitch = _ref.trackSwitch,
- accurateTimeOffset = _ref.accurateTimeOffset,
- timeOffset = _ref.timeOffset,
- initSegmentChange = _ref.initSegmentChange;
- var audioCodec = transmuxConfig.audioCodec,
- videoCodec = transmuxConfig.videoCodec,
- defaultInitPts = transmuxConfig.defaultInitPts,
- duration = transmuxConfig.duration,
- initSegmentData = transmuxConfig.initSegmentData;
- var keyData = getEncryptionType(uintData, decryptdata);
- if (keyData && keyData.method === 'AES-128') {
- var decrypter = this.getDecrypter();
- // Software decryption is synchronous; webCrypto is not
- if (decrypter.isSync()) {
- // Software decryption is progressive. Progressive decryption may not return a result on each call. Any cached
- // data is handled in the flush() call
- var decryptedData = decrypter.softwareDecrypt(uintData, keyData.key.buffer, keyData.iv.buffer);
- // For Low-Latency HLS Parts, decrypt in place, since part parsing is expected on push progress
- var loadingParts = chunkMeta.part > -1;
- if (loadingParts) {
- decryptedData = decrypter.flush();
- }
- if (!decryptedData) {
- stats.executeEnd = now();
- return emptyResult(chunkMeta);
- }
- uintData = new Uint8Array(decryptedData);
- } else {
- this.decryptionPromise = decrypter.webCryptoDecrypt(uintData, keyData.key.buffer, keyData.iv.buffer).then(function (decryptedData) {
- // Calling push here is important; if flush() is called while this is still resolving, this ensures that
- // the decrypted data has been transmuxed
- var result = _this.push(decryptedData, null, chunkMeta);
- _this.decryptionPromise = null;
- return result;
- });
- return this.decryptionPromise;
- }
- }
- var resetMuxers = this.needsProbing(discontinuity, trackSwitch);
- if (resetMuxers) {
- var error = this.configureTransmuxer(uintData);
- if (error) {
- logger.warn("[transmuxer] " + error.message);
- this.observer.emit(Events.ERROR, Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.FRAG_PARSING_ERROR,
- fatal: false,
- error: error,
- reason: error.message
- });
- stats.executeEnd = now();
- return emptyResult(chunkMeta);
- }
- }
- if (discontinuity || trackSwitch || initSegmentChange || resetMuxers) {
- this.resetInitSegment(initSegmentData, audioCodec, videoCodec, duration, decryptdata);
- }
- if (discontinuity || initSegmentChange || resetMuxers) {
- this.resetInitialTimestamp(defaultInitPts);
- }
- if (!contiguous) {
- this.resetContiguity();
- }
- var result = this.transmux(uintData, keyData, timeOffset, accurateTimeOffset, chunkMeta);
- var currentState = this.currentTransmuxState;
- currentState.contiguous = true;
- currentState.discontinuity = false;
- currentState.trackSwitch = false;
- stats.executeEnd = now();
- return result;
- }
-
- // Due to data caching, flush calls can produce more than one TransmuxerResult (hence the Array type)
- ;
- _proto.flush = function flush(chunkMeta) {
- var _this2 = this;
- var stats = chunkMeta.transmuxing;
- stats.executeStart = now();
- var decrypter = this.decrypter,
- currentTransmuxState = this.currentTransmuxState,
- decryptionPromise = this.decryptionPromise;
- if (decryptionPromise) {
- // Upon resolution, the decryption promise calls push() and returns its TransmuxerResult up the stack. Therefore
- // only flushing is required for async decryption
- return decryptionPromise.then(function () {
- return _this2.flush(chunkMeta);
- });
- }
- var transmuxResults = [];
- var timeOffset = currentTransmuxState.timeOffset;
- if (decrypter) {
- // The decrypter may have data cached, which needs to be demuxed. In this case we'll have two TransmuxResults
- // This happens in the case that we receive only 1 push call for a segment (either for non-progressive downloads,
- // or for progressive downloads with small segments)
- var decryptedData = decrypter.flush();
- if (decryptedData) {
- // Push always returns a TransmuxerResult if decryptdata is null
- transmuxResults.push(this.push(decryptedData, null, chunkMeta));
- }
- }
- var demuxer = this.demuxer,
- remuxer = this.remuxer;
- if (!demuxer || !remuxer) {
- // If probing failed, then Hls.js has been given content its not able to handle
- stats.executeEnd = now();
- return [emptyResult(chunkMeta)];
- }
- var demuxResultOrPromise = demuxer.flush(timeOffset);
- if (isPromise(demuxResultOrPromise)) {
- // Decrypt final SAMPLE-AES samples
- return demuxResultOrPromise.then(function (demuxResult) {
- _this2.flushRemux(transmuxResults, demuxResult, chunkMeta);
- return transmuxResults;
- });
- }
- this.flushRemux(transmuxResults, demuxResultOrPromise, chunkMeta);
- return transmuxResults;
- };
- _proto.flushRemux = function flushRemux(transmuxResults, demuxResult, chunkMeta) {
- var audioTrack = demuxResult.audioTrack,
- videoTrack = demuxResult.videoTrack,
- id3Track = demuxResult.id3Track,
- textTrack = demuxResult.textTrack;
- var _this$currentTransmux = this.currentTransmuxState,
- accurateTimeOffset = _this$currentTransmux.accurateTimeOffset,
- timeOffset = _this$currentTransmux.timeOffset;
- logger.log("[transmuxer.ts]: Flushed fragment " + chunkMeta.sn + (chunkMeta.part > -1 ? ' p: ' + chunkMeta.part : '') + " of level " + chunkMeta.level);
- var remuxResult = this.remuxer.remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, accurateTimeOffset, true, this.id);
- transmuxResults.push({
- remuxResult: remuxResult,
- chunkMeta: chunkMeta
- });
- chunkMeta.transmuxing.executeEnd = now();
- };
- _proto.resetInitialTimestamp = function resetInitialTimestamp(defaultInitPts) {
- var demuxer = this.demuxer,
- remuxer = this.remuxer;
- if (!demuxer || !remuxer) {
- return;
- }
- demuxer.resetTimeStamp(defaultInitPts);
- remuxer.resetTimeStamp(defaultInitPts);
- };
- _proto.resetContiguity = function resetContiguity() {
- var demuxer = this.demuxer,
- remuxer = this.remuxer;
- if (!demuxer || !remuxer) {
- return;
- }
- demuxer.resetContiguity();
- remuxer.resetNextTimestamp();
- };
- _proto.resetInitSegment = function resetInitSegment(initSegmentData, audioCodec, videoCodec, trackDuration, decryptdata) {
- var demuxer = this.demuxer,
- remuxer = this.remuxer;
- if (!demuxer || !remuxer) {
- return;
- }
- demuxer.resetInitSegment(initSegmentData, audioCodec, videoCodec, trackDuration);
- remuxer.resetInitSegment(initSegmentData, audioCodec, videoCodec, decryptdata);
- };
- _proto.destroy = function destroy() {
- if (this.demuxer) {
- this.demuxer.destroy();
- this.demuxer = undefined;
- }
- if (this.remuxer) {
- this.remuxer.destroy();
- this.remuxer = undefined;
- }
- };
- _proto.transmux = function transmux(data, keyData, timeOffset, accurateTimeOffset, chunkMeta) {
- var result;
- if (keyData && keyData.method === 'SAMPLE-AES') {
- result = this.transmuxSampleAes(data, keyData, timeOffset, accurateTimeOffset, chunkMeta);
- } else {
- result = this.transmuxUnencrypted(data, timeOffset, accurateTimeOffset, chunkMeta);
- }
- return result;
- };
- _proto.transmuxUnencrypted = function transmuxUnencrypted(data, timeOffset, accurateTimeOffset, chunkMeta) {
- var _demux = this.demuxer.demux(data, timeOffset, false, !this.config.progressive),
- audioTrack = _demux.audioTrack,
- videoTrack = _demux.videoTrack,
- id3Track = _demux.id3Track,
- textTrack = _demux.textTrack;
- var remuxResult = this.remuxer.remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, accurateTimeOffset, false, this.id);
- return {
- remuxResult: remuxResult,
- chunkMeta: chunkMeta
- };
- };
- _proto.transmuxSampleAes = function transmuxSampleAes(data, decryptData, timeOffset, accurateTimeOffset, chunkMeta) {
- var _this3 = this;
- return this.demuxer.demuxSampleAes(data, decryptData, timeOffset).then(function (demuxResult) {
- var remuxResult = _this3.remuxer.remux(demuxResult.audioTrack, demuxResult.videoTrack, demuxResult.id3Track, demuxResult.textTrack, timeOffset, accurateTimeOffset, false, _this3.id);
- return {
- remuxResult: remuxResult,
- chunkMeta: chunkMeta
- };
- });
- };
- _proto.configureTransmuxer = function configureTransmuxer(data) {
- var config = this.config,
- observer = this.observer,
- typeSupported = this.typeSupported,
- vendor = this.vendor;
- // probe for content type
- var mux;
- for (var i = 0, len = muxConfig.length; i < len; i++) {
- var _muxConfig$i$demux;
- if ((_muxConfig$i$demux = muxConfig[i].demux) != null && _muxConfig$i$demux.probe(data)) {
- mux = muxConfig[i];
- break;
- }
- }
- if (!mux) {
- return new Error('Failed to find demuxer by probing fragment data');
- }
- // so let's check that current remuxer and demuxer are still valid
- var demuxer = this.demuxer;
- var remuxer = this.remuxer;
- var Remuxer = mux.remux;
- var Demuxer = mux.demux;
- if (!remuxer || !(remuxer instanceof Remuxer)) {
- this.remuxer = new Remuxer(observer, config, typeSupported, vendor);
- }
- if (!demuxer || !(demuxer instanceof Demuxer)) {
- this.demuxer = new Demuxer(observer, config, typeSupported);
- this.probe = Demuxer.probe;
- }
- };
- _proto.needsProbing = function needsProbing(discontinuity, trackSwitch) {
- // in case of continuity change, or track switch
- // we might switch from content type (AAC container to TS container, or TS to fmp4 for example)
- return !this.demuxer || !this.remuxer || discontinuity || trackSwitch;
- };
- _proto.getDecrypter = function getDecrypter() {
- var decrypter = this.decrypter;
- if (!decrypter) {
- decrypter = this.decrypter = new Decrypter(this.config);
- }
- return decrypter;
- };
- return Transmuxer;
- }();
- function getEncryptionType(data, decryptData) {
- var encryptionType = null;
- if (data.byteLength > 0 && (decryptData == null ? void 0 : decryptData.key) != null && decryptData.iv !== null && decryptData.method != null) {
- encryptionType = decryptData;
- }
- return encryptionType;
- }
- var emptyResult = function emptyResult(chunkMeta) {
- return {
- remuxResult: {},
- chunkMeta: chunkMeta
- };
- };
- function isPromise(p) {
- return 'then' in p && p.then instanceof Function;
- }
- var TransmuxConfig = function TransmuxConfig(audioCodec, videoCodec, initSegmentData, duration, defaultInitPts) {
- this.audioCodec = void 0;
- this.videoCodec = void 0;
- this.initSegmentData = void 0;
- this.duration = void 0;
- this.defaultInitPts = void 0;
- this.audioCodec = audioCodec;
- this.videoCodec = videoCodec;
- this.initSegmentData = initSegmentData;
- this.duration = duration;
- this.defaultInitPts = defaultInitPts || null;
- };
- var TransmuxState = function TransmuxState(discontinuity, contiguous, accurateTimeOffset, trackSwitch, timeOffset, initSegmentChange) {
- this.discontinuity = void 0;
- this.contiguous = void 0;
- this.accurateTimeOffset = void 0;
- this.trackSwitch = void 0;
- this.timeOffset = void 0;
- this.initSegmentChange = void 0;
- this.discontinuity = discontinuity;
- this.contiguous = contiguous;
- this.accurateTimeOffset = accurateTimeOffset;
- this.trackSwitch = trackSwitch;
- this.timeOffset = timeOffset;
- this.initSegmentChange = initSegmentChange;
- };
-
- var eventemitter3 = {exports: {}};
-
- (function (module) {
-
- var has = Object.prototype.hasOwnProperty
- , prefix = '~';
-
- /**
- * Constructor to create a storage for our `EE` objects.
- * An `Events` instance is a plain object whose properties are event names.
- *
- * @constructor
- * @private
- */
- function Events() {}
-
- //
- // We try to not inherit from `Object.prototype`. In some engines creating an
- // instance in this way is faster than calling `Object.create(null)` directly.
- // If `Object.create(null)` is not supported we prefix the event names with a
- // character to make sure that the built-in object properties are not
- // overridden or used as an attack vector.
- //
- if (Object.create) {
- Events.prototype = Object.create(null);
-
- //
- // This hack is needed because the `__proto__` property is still inherited in
- // some old browsers like Android 4, iPhone 5.1, Opera 11 and Safari 5.
- //
- if (!new Events().__proto__) prefix = false;
- }
-
- /**
- * Representation of a single event listener.
- *
- * @param {Function} fn The listener function.
- * @param {*} context The context to invoke the listener with.
- * @param {Boolean} [once=false] Specify if the listener is a one-time listener.
- * @constructor
- * @private
- */
- function EE(fn, context, once) {
- this.fn = fn;
- this.context = context;
- this.once = once || false;
- }
-
- /**
- * Add a listener for a given event.
- *
- * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.
- * @param {(String|Symbol)} event The event name.
- * @param {Function} fn The listener function.
- * @param {*} context The context to invoke the listener with.
- * @param {Boolean} once Specify if the listener is a one-time listener.
- * @returns {EventEmitter}
- * @private
- */
- function addListener(emitter, event, fn, context, once) {
- if (typeof fn !== 'function') {
- throw new TypeError('The listener must be a function');
- }
-
- var listener = new EE(fn, context || emitter, once)
- , evt = prefix ? prefix + event : event;
-
- if (!emitter._events[evt]) emitter._events[evt] = listener, emitter._eventsCount++;
- else if (!emitter._events[evt].fn) emitter._events[evt].push(listener);
- else emitter._events[evt] = [emitter._events[evt], listener];
-
- return emitter;
- }
-
- /**
- * Clear event by name.
- *
- * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.
- * @param {(String|Symbol)} evt The Event name.
- * @private
- */
- function clearEvent(emitter, evt) {
- if (--emitter._eventsCount === 0) emitter._events = new Events();
- else delete emitter._events[evt];
- }
-
- /**
- * Minimal `EventEmitter` interface that is molded against the Node.js
- * `EventEmitter` interface.
- *
- * @constructor
- * @public
- */
- function EventEmitter() {
- this._events = new Events();
- this._eventsCount = 0;
- }
-
- /**
- * Return an array listing the events for which the emitter has registered
- * listeners.
- *
- * @returns {Array}
- * @public
- */
- EventEmitter.prototype.eventNames = function eventNames() {
- var names = []
- , events
- , name;
-
- if (this._eventsCount === 0) return names;
-
- for (name in (events = this._events)) {
- if (has.call(events, name)) names.push(prefix ? name.slice(1) : name);
- }
-
- if (Object.getOwnPropertySymbols) {
- return names.concat(Object.getOwnPropertySymbols(events));
- }
-
- return names;
- };
-
- /**
- * Return the listeners registered for a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @returns {Array} The registered listeners.
- * @public
- */
- EventEmitter.prototype.listeners = function listeners(event) {
- var evt = prefix ? prefix + event : event
- , handlers = this._events[evt];
-
- if (!handlers) return [];
- if (handlers.fn) return [handlers.fn];
-
- for (var i = 0, l = handlers.length, ee = new Array(l); i < l; i++) {
- ee[i] = handlers[i].fn;
- }
-
- return ee;
- };
-
- /**
- * Return the number of listeners listening to a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @returns {Number} The number of listeners.
- * @public
- */
- EventEmitter.prototype.listenerCount = function listenerCount(event) {
- var evt = prefix ? prefix + event : event
- , listeners = this._events[evt];
-
- if (!listeners) return 0;
- if (listeners.fn) return 1;
- return listeners.length;
- };
-
- /**
- * Calls each of the listeners registered for a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @returns {Boolean} `true` if the event had listeners, else `false`.
- * @public
- */
- EventEmitter.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {
- var evt = prefix ? prefix + event : event;
-
- if (!this._events[evt]) return false;
-
- var listeners = this._events[evt]
- , len = arguments.length
- , args
- , i;
-
- if (listeners.fn) {
- if (listeners.once) this.removeListener(event, listeners.fn, undefined, true);
-
- switch (len) {
- case 1: return listeners.fn.call(listeners.context), true;
- case 2: return listeners.fn.call(listeners.context, a1), true;
- case 3: return listeners.fn.call(listeners.context, a1, a2), true;
- case 4: return listeners.fn.call(listeners.context, a1, a2, a3), true;
- case 5: return listeners.fn.call(listeners.context, a1, a2, a3, a4), true;
- case 6: return listeners.fn.call(listeners.context, a1, a2, a3, a4, a5), true;
- }
-
- for (i = 1, args = new Array(len -1); i < len; i++) {
- args[i - 1] = arguments[i];
- }
-
- listeners.fn.apply(listeners.context, args);
- } else {
- var length = listeners.length
- , j;
-
- for (i = 0; i < length; i++) {
- if (listeners[i].once) this.removeListener(event, listeners[i].fn, undefined, true);
-
- switch (len) {
- case 1: listeners[i].fn.call(listeners[i].context); break;
- case 2: listeners[i].fn.call(listeners[i].context, a1); break;
- case 3: listeners[i].fn.call(listeners[i].context, a1, a2); break;
- case 4: listeners[i].fn.call(listeners[i].context, a1, a2, a3); break;
- default:
- if (!args) for (j = 1, args = new Array(len -1); j < len; j++) {
- args[j - 1] = arguments[j];
- }
-
- listeners[i].fn.apply(listeners[i].context, args);
- }
- }
- }
-
- return true;
- };
-
- /**
- * Add a listener for a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @param {Function} fn The listener function.
- * @param {*} [context=this] The context to invoke the listener with.
- * @returns {EventEmitter} `this`.
- * @public
- */
- EventEmitter.prototype.on = function on(event, fn, context) {
- return addListener(this, event, fn, context, false);
- };
-
- /**
- * Add a one-time listener for a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @param {Function} fn The listener function.
- * @param {*} [context=this] The context to invoke the listener with.
- * @returns {EventEmitter} `this`.
- * @public
- */
- EventEmitter.prototype.once = function once(event, fn, context) {
- return addListener(this, event, fn, context, true);
- };
-
- /**
- * Remove the listeners of a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @param {Function} fn Only remove the listeners that match this function.
- * @param {*} context Only remove the listeners that have this context.
- * @param {Boolean} once Only remove one-time listeners.
- * @returns {EventEmitter} `this`.
- * @public
- */
- EventEmitter.prototype.removeListener = function removeListener(event, fn, context, once) {
- var evt = prefix ? prefix + event : event;
-
- if (!this._events[evt]) return this;
- if (!fn) {
- clearEvent(this, evt);
- return this;
- }
-
- var listeners = this._events[evt];
-
- if (listeners.fn) {
- if (
- listeners.fn === fn &&
- (!once || listeners.once) &&
- (!context || listeners.context === context)
- ) {
- clearEvent(this, evt);
- }
- } else {
- for (var i = 0, events = [], length = listeners.length; i < length; i++) {
- if (
- listeners[i].fn !== fn ||
- (once && !listeners[i].once) ||
- (context && listeners[i].context !== context)
- ) {
- events.push(listeners[i]);
- }
- }
-
- //
- // Reset the array, or remove it completely if we have no more listeners.
- //
- if (events.length) this._events[evt] = events.length === 1 ? events[0] : events;
- else clearEvent(this, evt);
- }
-
- return this;
- };
-
- /**
- * Remove all listeners, or those of the specified event.
- *
- * @param {(String|Symbol)} [event] The event name.
- * @returns {EventEmitter} `this`.
- * @public
- */
- EventEmitter.prototype.removeAllListeners = function removeAllListeners(event) {
- var evt;
-
- if (event) {
- evt = prefix ? prefix + event : event;
- if (this._events[evt]) clearEvent(this, evt);
- } else {
- this._events = new Events();
- this._eventsCount = 0;
- }
-
- return this;
- };
-
- //
- // Alias methods names because people roll like that.
- //
- EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
- EventEmitter.prototype.addListener = EventEmitter.prototype.on;
-
- //
- // Expose the prefix.
- //
- EventEmitter.prefixed = prefix;
-
- //
- // Allow `EventEmitter` to be imported as module namespace.
- //
- EventEmitter.EventEmitter = EventEmitter;
-
- //
- // Expose the module.
- //
- {
- module.exports = EventEmitter;
- }
- } (eventemitter3));
-
- var eventemitter3Exports = eventemitter3.exports;
- var EventEmitter = /*@__PURE__*/getDefaultExportFromCjs(eventemitter3Exports);
-
- if (typeof __IN_WORKER__ !== 'undefined' && __IN_WORKER__) {
- startWorker(self);
- }
- function startWorker(self) {
- var observer = new EventEmitter();
- var forwardMessage = function forwardMessage(ev, data) {
- self.postMessage({
- event: ev,
- data: data
- });
- };
-
- // forward events to main thread
- observer.on(Events.FRAG_DECRYPTED, forwardMessage);
- observer.on(Events.ERROR, forwardMessage);
-
- // forward logger events to main thread
- var forwardWorkerLogs = function forwardWorkerLogs() {
- var _loop = function _loop(logFn) {
- var func = function func(message) {
- forwardMessage('workerLog', {
- logType: logFn,
- message: message
- });
- };
- logger[logFn] = func;
- };
- for (var logFn in logger) {
- _loop(logFn);
- }
- };
- self.addEventListener('message', function (ev) {
- var data = ev.data;
- switch (data.cmd) {
- case 'init':
- {
- var config = JSON.parse(data.config);
- self.transmuxer = new Transmuxer(observer, data.typeSupported, config, '', data.id);
- enableLogs(config.debug, data.id);
- forwardWorkerLogs();
- forwardMessage('init', null);
- break;
- }
- case 'configure':
- {
- self.transmuxer.configure(data.config);
- break;
- }
- case 'demux':
- {
- var transmuxResult = self.transmuxer.push(data.data, data.decryptdata, data.chunkMeta, data.state);
- if (isPromise(transmuxResult)) {
- self.transmuxer.async = true;
- transmuxResult.then(function (data) {
- emitTransmuxComplete(self, data);
- }).catch(function (error) {
- forwardMessage(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.FRAG_PARSING_ERROR,
- chunkMeta: data.chunkMeta,
- fatal: false,
- error: error,
- err: error,
- reason: "transmuxer-worker push error"
- });
- });
- } else {
- self.transmuxer.async = false;
- emitTransmuxComplete(self, transmuxResult);
- }
- break;
- }
- case 'flush':
- {
- var id = data.chunkMeta;
- var _transmuxResult = self.transmuxer.flush(id);
- var asyncFlush = isPromise(_transmuxResult);
- if (asyncFlush || self.transmuxer.async) {
- if (!isPromise(_transmuxResult)) {
- _transmuxResult = Promise.resolve(_transmuxResult);
- }
- _transmuxResult.then(function (results) {
- handleFlushResult(self, results, id);
- }).catch(function (error) {
- forwardMessage(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.FRAG_PARSING_ERROR,
- chunkMeta: data.chunkMeta,
- fatal: false,
- error: error,
- err: error,
- reason: "transmuxer-worker flush error"
- });
- });
- } else {
- handleFlushResult(self, _transmuxResult, id);
- }
- break;
- }
- }
- });
- }
- function emitTransmuxComplete(self, transmuxResult) {
- if (isEmptyResult(transmuxResult.remuxResult)) {
- return false;
- }
- var transferable = [];
- var _transmuxResult$remux = transmuxResult.remuxResult,
- audio = _transmuxResult$remux.audio,
- video = _transmuxResult$remux.video;
- if (audio) {
- addToTransferable(transferable, audio);
- }
- if (video) {
- addToTransferable(transferable, video);
- }
- self.postMessage({
- event: 'transmuxComplete',
- data: transmuxResult
- }, transferable);
- return true;
- }
-
- // Converts data to a transferable object https://developers.google.com/web/updates/2011/12/Transferable-Objects-Lightning-Fast)
- // in order to minimize message passing overhead
- function addToTransferable(transferable, track) {
- if (track.data1) {
- transferable.push(track.data1.buffer);
- }
- if (track.data2) {
- transferable.push(track.data2.buffer);
- }
- }
- function handleFlushResult(self, results, chunkMeta) {
- var parsed = results.reduce(function (parsed, result) {
- return emitTransmuxComplete(self, result) || parsed;
- }, false);
- if (!parsed) {
- // Emit at least one "transmuxComplete" message even if media is not found to update stream-controller state to PARSING
- self.postMessage({
- event: 'transmuxComplete',
- data: results[0]
- });
- }
- self.postMessage({
- event: 'flush',
- data: chunkMeta
- });
- }
- function isEmptyResult(remuxResult) {
- return !remuxResult.audio && !remuxResult.video && !remuxResult.text && !remuxResult.id3 && !remuxResult.initSegment;
- }
-
- // ensure the worker ends up in the bundle
- // If the worker should not be included this gets aliased to empty.js
- function hasUMDWorker() {
- return typeof __HLS_WORKER_BUNDLE__ === 'function';
- }
- function injectWorker() {
- var blob = new self.Blob(["var exports={};var module={exports:exports};function define(f){f()};define.amd=true;(" + __HLS_WORKER_BUNDLE__.toString() + ")(true);"], {
- type: 'text/javascript'
- });
- var objectURL = self.URL.createObjectURL(blob);
- var worker = new self.Worker(objectURL);
- return {
- worker: worker,
- objectURL: objectURL
- };
- }
- function loadWorker(path) {
- var scriptURL = new self.URL(path, self.location.href).href;
- var worker = new self.Worker(scriptURL);
- return {
- worker: worker,
- scriptURL: scriptURL
- };
- }
-
- var TransmuxerInterface = /*#__PURE__*/function () {
- function TransmuxerInterface(hls, id, onTransmuxComplete, onFlush) {
- var _this = this;
- this.error = null;
- this.hls = void 0;
- this.id = void 0;
- this.observer = void 0;
- this.frag = null;
- this.part = null;
- this.useWorker = void 0;
- this.workerContext = null;
- this.onwmsg = void 0;
- this.transmuxer = null;
- this.onTransmuxComplete = void 0;
- this.onFlush = void 0;
- var config = hls.config;
- this.hls = hls;
- this.id = id;
- this.useWorker = !!config.enableWorker;
- this.onTransmuxComplete = onTransmuxComplete;
- this.onFlush = onFlush;
- var forwardMessage = function forwardMessage(ev, data) {
- data = data || {};
- data.frag = _this.frag;
- data.id = _this.id;
- if (ev === Events.ERROR) {
- _this.error = data.error;
- }
- _this.hls.trigger(ev, data);
- };
-
- // forward events to main thread
- this.observer = new EventEmitter();
- this.observer.on(Events.FRAG_DECRYPTED, forwardMessage);
- this.observer.on(Events.ERROR, forwardMessage);
- var MediaSource = getMediaSource(config.preferManagedMediaSource) || {
- isTypeSupported: function isTypeSupported() {
- return false;
- }
- };
- var m2tsTypeSupported = {
- mpeg: MediaSource.isTypeSupported('audio/mpeg'),
- mp3: MediaSource.isTypeSupported('audio/mp4; codecs="mp3"'),
- ac3: MediaSource.isTypeSupported('audio/mp4; codecs="ac-3"')
- };
- if (this.useWorker && typeof Worker !== 'undefined') {
- var canCreateWorker = config.workerPath || hasUMDWorker();
- if (canCreateWorker) {
- try {
- if (config.workerPath) {
- logger.log("loading Web Worker " + config.workerPath + " for \"" + id + "\"");
- this.workerContext = loadWorker(config.workerPath);
- } else {
- logger.log("injecting Web Worker for \"" + id + "\"");
- this.workerContext = injectWorker();
- }
- this.onwmsg = function (event) {
- return _this.onWorkerMessage(event);
- };
- var worker = this.workerContext.worker;
- worker.addEventListener('message', this.onwmsg);
- worker.onerror = function (event) {
- var error = new Error(event.message + " (" + event.filename + ":" + event.lineno + ")");
- config.enableWorker = false;
- logger.warn("Error in \"" + id + "\" Web Worker, fallback to inline");
- _this.hls.trigger(Events.ERROR, {
- type: ErrorTypes.OTHER_ERROR,
- details: ErrorDetails.INTERNAL_EXCEPTION,
- fatal: false,
- event: 'demuxerWorker',
- error: error
- });
- };
- worker.postMessage({
- cmd: 'init',
- typeSupported: m2tsTypeSupported,
- vendor: '',
- id: id,
- config: JSON.stringify(config)
- });
- } catch (err) {
- logger.warn("Error setting up \"" + id + "\" Web Worker, fallback to inline", err);
- this.resetWorker();
- this.error = null;
- this.transmuxer = new Transmuxer(this.observer, m2tsTypeSupported, config, '', id);
- }
- return;
- }
- }
- this.transmuxer = new Transmuxer(this.observer, m2tsTypeSupported, config, '', id);
- }
- var _proto = TransmuxerInterface.prototype;
- _proto.resetWorker = function resetWorker() {
- if (this.workerContext) {
- var _this$workerContext = this.workerContext,
- worker = _this$workerContext.worker,
- objectURL = _this$workerContext.objectURL;
- if (objectURL) {
- // revoke the Object URL that was used to create transmuxer worker, so as not to leak it
- self.URL.revokeObjectURL(objectURL);
- }
- worker.removeEventListener('message', this.onwmsg);
- worker.onerror = null;
- worker.terminate();
- this.workerContext = null;
- }
- };
- _proto.destroy = function destroy() {
- if (this.workerContext) {
- this.resetWorker();
- this.onwmsg = undefined;
- } else {
- var transmuxer = this.transmuxer;
- if (transmuxer) {
- transmuxer.destroy();
- this.transmuxer = null;
- }
- }
- var observer = this.observer;
- if (observer) {
- observer.removeAllListeners();
- }
- this.frag = null;
- // @ts-ignore
- this.observer = null;
- // @ts-ignore
- this.hls = null;
- };
- _proto.push = function push(data, initSegmentData, audioCodec, videoCodec, frag, part, duration, accurateTimeOffset, chunkMeta, defaultInitPTS) {
- var _frag$initSegment,
- _lastFrag$initSegment,
- _this2 = this;
- chunkMeta.transmuxing.start = self.performance.now();
- var transmuxer = this.transmuxer;
- var timeOffset = part ? part.start : frag.start;
- // TODO: push "clear-lead" decrypt data for unencrypted fragments in streams with encrypted ones
- var decryptdata = frag.decryptdata;
- var lastFrag = this.frag;
- var discontinuity = !(lastFrag && frag.cc === lastFrag.cc);
- var trackSwitch = !(lastFrag && chunkMeta.level === lastFrag.level);
- var snDiff = lastFrag ? chunkMeta.sn - lastFrag.sn : -1;
- var partDiff = this.part ? chunkMeta.part - this.part.index : -1;
- var progressive = snDiff === 0 && chunkMeta.id > 1 && chunkMeta.id === (lastFrag == null ? void 0 : lastFrag.stats.chunkCount);
- var contiguous = !trackSwitch && (snDiff === 1 || snDiff === 0 && (partDiff === 1 || progressive && partDiff <= 0));
- var now = self.performance.now();
- if (trackSwitch || snDiff || frag.stats.parsing.start === 0) {
- frag.stats.parsing.start = now;
- }
- if (part && (partDiff || !contiguous)) {
- part.stats.parsing.start = now;
- }
- var initSegmentChange = !(lastFrag && ((_frag$initSegment = frag.initSegment) == null ? void 0 : _frag$initSegment.url) === ((_lastFrag$initSegment = lastFrag.initSegment) == null ? void 0 : _lastFrag$initSegment.url));
- var state = new TransmuxState(discontinuity, contiguous, accurateTimeOffset, trackSwitch, timeOffset, initSegmentChange);
- if (!contiguous || discontinuity || initSegmentChange) {
- logger.log("[transmuxer-interface, " + frag.type + "]: Starting new transmux session for sn: " + chunkMeta.sn + " p: " + chunkMeta.part + " level: " + chunkMeta.level + " id: " + chunkMeta.id + "\n discontinuity: " + discontinuity + "\n trackSwitch: " + trackSwitch + "\n contiguous: " + contiguous + "\n accurateTimeOffset: " + accurateTimeOffset + "\n timeOffset: " + timeOffset + "\n initSegmentChange: " + initSegmentChange);
- var config = new TransmuxConfig(audioCodec, videoCodec, initSegmentData, duration, defaultInitPTS);
- this.configureTransmuxer(config);
- }
- this.frag = frag;
- this.part = part;
-
- // Frags with sn of 'initSegment' are not transmuxed
- if (this.workerContext) {
- // post fragment payload as transferable objects for ArrayBuffer (no copy)
- this.workerContext.worker.postMessage({
- cmd: 'demux',
- data: data,
- decryptdata: decryptdata,
- chunkMeta: chunkMeta,
- state: state
- }, data instanceof ArrayBuffer ? [data] : []);
- } else if (transmuxer) {
- var _transmuxResult = transmuxer.push(data, decryptdata, chunkMeta, state);
- if (isPromise(_transmuxResult)) {
- transmuxer.async = true;
- _transmuxResult.then(function (data) {
- _this2.handleTransmuxComplete(data);
- }).catch(function (error) {
- _this2.transmuxerError(error, chunkMeta, 'transmuxer-interface push error');
- });
- } else {
- transmuxer.async = false;
- this.handleTransmuxComplete(_transmuxResult);
- }
- }
- };
- _proto.flush = function flush(chunkMeta) {
- var _this3 = this;
- chunkMeta.transmuxing.start = self.performance.now();
- var transmuxer = this.transmuxer;
- if (this.workerContext) {
- this.workerContext.worker.postMessage({
- cmd: 'flush',
- chunkMeta: chunkMeta
- });
- } else if (transmuxer) {
- var _transmuxResult2 = transmuxer.flush(chunkMeta);
- var asyncFlush = isPromise(_transmuxResult2);
- if (asyncFlush || transmuxer.async) {
- if (!isPromise(_transmuxResult2)) {
- _transmuxResult2 = Promise.resolve(_transmuxResult2);
- }
- _transmuxResult2.then(function (data) {
- _this3.handleFlushResult(data, chunkMeta);
- }).catch(function (error) {
- _this3.transmuxerError(error, chunkMeta, 'transmuxer-interface flush error');
- });
- } else {
- this.handleFlushResult(_transmuxResult2, chunkMeta);
- }
- }
- };
- _proto.transmuxerError = function transmuxerError(error, chunkMeta, reason) {
- if (!this.hls) {
- return;
- }
- this.error = error;
- this.hls.trigger(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.FRAG_PARSING_ERROR,
- chunkMeta: chunkMeta,
- frag: this.frag || undefined,
- fatal: false,
- error: error,
- err: error,
- reason: reason
- });
- };
- _proto.handleFlushResult = function handleFlushResult(results, chunkMeta) {
- var _this4 = this;
- results.forEach(function (result) {
- _this4.handleTransmuxComplete(result);
- });
- this.onFlush(chunkMeta);
- };
- _proto.onWorkerMessage = function onWorkerMessage(event) {
- var data = event.data;
- if (!(data != null && data.event)) {
- logger.warn("worker message received with no " + (data ? 'event name' : 'data'));
- return;
- }
- var hls = this.hls;
- if (!this.hls) {
- return;
- }
- switch (data.event) {
- case 'init':
- {
- var _this$workerContext2;
- var objectURL = (_this$workerContext2 = this.workerContext) == null ? void 0 : _this$workerContext2.objectURL;
- if (objectURL) {
- // revoke the Object URL that was used to create transmuxer worker, so as not to leak it
- self.URL.revokeObjectURL(objectURL);
- }
- break;
- }
- case 'transmuxComplete':
- {
- this.handleTransmuxComplete(data.data);
- break;
- }
- case 'flush':
- {
- this.onFlush(data.data);
- break;
- }
-
- // pass logs from the worker thread to the main logger
- case 'workerLog':
- if (logger[data.data.logType]) {
- logger[data.data.logType](data.data.message);
- }
- break;
- default:
- {
- data.data = data.data || {};
- data.data.frag = this.frag;
- data.data.id = this.id;
- hls.trigger(data.event, data.data);
- break;
- }
- }
- };
- _proto.configureTransmuxer = function configureTransmuxer(config) {
- var transmuxer = this.transmuxer;
- if (this.workerContext) {
- this.workerContext.worker.postMessage({
- cmd: 'configure',
- config: config
- });
- } else if (transmuxer) {
- transmuxer.configure(config);
- }
- };
- _proto.handleTransmuxComplete = function handleTransmuxComplete(result) {
- result.chunkMeta.transmuxing.end = self.performance.now();
- this.onTransmuxComplete(result);
- };
- return TransmuxerInterface;
- }();
-
- function subtitleOptionsIdentical(trackList1, trackList2) {
- if (trackList1.length !== trackList2.length) {
- return false;
- }
- for (var i = 0; i < trackList1.length; i++) {
- if (!mediaAttributesIdentical(trackList1[i].attrs, trackList2[i].attrs)) {
- return false;
- }
- }
- return true;
- }
- function mediaAttributesIdentical(attrs1, attrs2, customAttributes) {
- // Media options with the same rendition ID must be bit identical
- var stableRenditionId = attrs1['STABLE-RENDITION-ID'];
- if (stableRenditionId && !customAttributes) {
- return stableRenditionId === attrs2['STABLE-RENDITION-ID'];
- }
- // When rendition ID is not present, compare attributes
- return !(customAttributes || ['LANGUAGE', 'NAME', 'CHARACTERISTICS', 'AUTOSELECT', 'DEFAULT', 'FORCED', 'ASSOC-LANGUAGE']).some(function (subtitleAttribute) {
- return attrs1[subtitleAttribute] !== attrs2[subtitleAttribute];
- });
- }
- function subtitleTrackMatchesTextTrack(subtitleTrack, textTrack) {
- return textTrack.label.toLowerCase() === subtitleTrack.name.toLowerCase() && (!textTrack.language || textTrack.language.toLowerCase() === (subtitleTrack.lang || '').toLowerCase());
- }
-
- var TICK_INTERVAL$2 = 100; // how often to tick in ms
- var AudioStreamController = /*#__PURE__*/function (_BaseStreamController) {
- _inheritsLoose(AudioStreamController, _BaseStreamController);
- function AudioStreamController(hls, fragmentTracker, keyLoader) {
- var _this;
- _this = _BaseStreamController.call(this, hls, fragmentTracker, keyLoader, '[audio-stream-controller]', PlaylistLevelType.AUDIO) || this;
- _this.videoBuffer = null;
- _this.videoTrackCC = -1;
- _this.waitingVideoCC = -1;
- _this.bufferedTrack = null;
- _this.switchingTrack = null;
- _this.trackId = -1;
- _this.waitingData = null;
- _this.mainDetails = null;
- _this.flushing = false;
- _this.bufferFlushed = false;
- _this.cachedTrackLoadedData = null;
- _this._registerListeners();
- return _this;
- }
- var _proto = AudioStreamController.prototype;
- _proto.onHandlerDestroying = function onHandlerDestroying() {
- this._unregisterListeners();
- _BaseStreamController.prototype.onHandlerDestroying.call(this);
- this.mainDetails = null;
- this.bufferedTrack = null;
- this.switchingTrack = null;
- };
- _proto._registerListeners = function _registerListeners() {
- var hls = this.hls;
- hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.on(Events.LEVEL_LOADED, this.onLevelLoaded, this);
- hls.on(Events.AUDIO_TRACKS_UPDATED, this.onAudioTracksUpdated, this);
- hls.on(Events.AUDIO_TRACK_SWITCHING, this.onAudioTrackSwitching, this);
- hls.on(Events.AUDIO_TRACK_LOADED, this.onAudioTrackLoaded, this);
- hls.on(Events.ERROR, this.onError, this);
- hls.on(Events.BUFFER_RESET, this.onBufferReset, this);
- hls.on(Events.BUFFER_CREATED, this.onBufferCreated, this);
- hls.on(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
- hls.on(Events.BUFFER_FLUSHED, this.onBufferFlushed, this);
- hls.on(Events.INIT_PTS_FOUND, this.onInitPtsFound, this);
- hls.on(Events.FRAG_BUFFERED, this.onFragBuffered, this);
- };
- _proto._unregisterListeners = function _unregisterListeners() {
- var hls = this.hls;
- hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.off(Events.LEVEL_LOADED, this.onLevelLoaded, this);
- hls.off(Events.AUDIO_TRACKS_UPDATED, this.onAudioTracksUpdated, this);
- hls.off(Events.AUDIO_TRACK_SWITCHING, this.onAudioTrackSwitching, this);
- hls.off(Events.AUDIO_TRACK_LOADED, this.onAudioTrackLoaded, this);
- hls.off(Events.ERROR, this.onError, this);
- hls.off(Events.BUFFER_RESET, this.onBufferReset, this);
- hls.off(Events.BUFFER_CREATED, this.onBufferCreated, this);
- hls.off(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
- hls.off(Events.BUFFER_FLUSHED, this.onBufferFlushed, this);
- hls.off(Events.INIT_PTS_FOUND, this.onInitPtsFound, this);
- hls.off(Events.FRAG_BUFFERED, this.onFragBuffered, this);
- }
-
- // INIT_PTS_FOUND is triggered when the video track parsed in the stream-controller has a new PTS value
- ;
- _proto.onInitPtsFound = function onInitPtsFound(event, _ref) {
- var frag = _ref.frag,
- id = _ref.id,
- initPTS = _ref.initPTS,
- timescale = _ref.timescale;
- // Always update the new INIT PTS
- // Can change due level switch
- if (id === 'main') {
- var cc = frag.cc;
- this.initPTS[frag.cc] = {
- baseTime: initPTS,
- timescale: timescale
- };
- this.log("InitPTS for cc: " + cc + " found from main: " + initPTS);
- this.videoTrackCC = cc;
- // If we are waiting, tick immediately to unblock audio fragment transmuxing
- if (this.state === State.WAITING_INIT_PTS) {
- this.tick();
- }
- }
- };
- _proto.startLoad = function startLoad(startPosition) {
- if (!this.levels) {
- this.startPosition = startPosition;
- this.state = State.STOPPED;
- return;
- }
- var lastCurrentTime = this.lastCurrentTime;
- this.stopLoad();
- this.setInterval(TICK_INTERVAL$2);
- if (lastCurrentTime > 0 && startPosition === -1) {
- this.log("Override startPosition with lastCurrentTime @" + lastCurrentTime.toFixed(3));
- startPosition = lastCurrentTime;
- this.state = State.IDLE;
- } else {
- this.loadedmetadata = false;
- this.state = State.WAITING_TRACK;
- }
- this.nextLoadPosition = this.startPosition = this.lastCurrentTime = startPosition;
- this.tick();
- };
- _proto.doTick = function doTick() {
- switch (this.state) {
- case State.IDLE:
- this.doTickIdle();
- break;
- case State.WAITING_TRACK:
- {
- var _levels$trackId;
- var levels = this.levels,
- trackId = this.trackId;
- var details = levels == null ? void 0 : (_levels$trackId = levels[trackId]) == null ? void 0 : _levels$trackId.details;
- if (details) {
- if (this.waitForCdnTuneIn(details)) {
- break;
- }
- this.state = State.WAITING_INIT_PTS;
- }
- break;
- }
- case State.FRAG_LOADING_WAITING_RETRY:
- {
- var _this$media;
- var now = performance.now();
- var retryDate = this.retryDate;
- // if current time is gt than retryDate, or if media seeking let's switch to IDLE state to retry loading
- if (!retryDate || now >= retryDate || (_this$media = this.media) != null && _this$media.seeking) {
- var _levels = this.levels,
- _trackId = this.trackId;
- this.log('RetryDate reached, switch back to IDLE state');
- this.resetStartWhenNotLoaded((_levels == null ? void 0 : _levels[_trackId]) || null);
- this.state = State.IDLE;
- }
- break;
- }
- case State.WAITING_INIT_PTS:
- {
- // Ensure we don't get stuck in the WAITING_INIT_PTS state if the waiting frag CC doesn't match any initPTS
- var waitingData = this.waitingData;
- if (waitingData) {
- var frag = waitingData.frag,
- part = waitingData.part,
- cache = waitingData.cache,
- complete = waitingData.complete;
- if (this.initPTS[frag.cc] !== undefined) {
- this.waitingData = null;
- this.waitingVideoCC = -1;
- this.state = State.FRAG_LOADING;
- var payload = cache.flush();
- var data = {
- frag: frag,
- part: part,
- payload: payload,
- networkDetails: null
- };
- this._handleFragmentLoadProgress(data);
- if (complete) {
- _BaseStreamController.prototype._handleFragmentLoadComplete.call(this, data);
- }
- } else if (this.videoTrackCC !== this.waitingVideoCC) {
- // Drop waiting fragment if videoTrackCC has changed since waitingFragment was set and initPTS was not found
- this.log("Waiting fragment cc (" + frag.cc + ") cancelled because video is at cc " + this.videoTrackCC);
- this.clearWaitingFragment();
- } else {
- // Drop waiting fragment if an earlier fragment is needed
- var pos = this.getLoadPosition();
- var bufferInfo = BufferHelper.bufferInfo(this.mediaBuffer, pos, this.config.maxBufferHole);
- var waitingFragmentAtPosition = fragmentWithinToleranceTest(bufferInfo.end, this.config.maxFragLookUpTolerance, frag);
- if (waitingFragmentAtPosition < 0) {
- this.log("Waiting fragment cc (" + frag.cc + ") @ " + frag.start + " cancelled because another fragment at " + bufferInfo.end + " is needed");
- this.clearWaitingFragment();
- }
- }
- } else {
- this.state = State.IDLE;
- }
- }
- }
- this.onTickEnd();
- };
- _proto.clearWaitingFragment = function clearWaitingFragment() {
- var waitingData = this.waitingData;
- if (waitingData) {
- this.fragmentTracker.removeFragment(waitingData.frag);
- this.waitingData = null;
- this.waitingVideoCC = -1;
- this.state = State.IDLE;
- }
- };
- _proto.resetLoadingState = function resetLoadingState() {
- this.clearWaitingFragment();
- _BaseStreamController.prototype.resetLoadingState.call(this);
- };
- _proto.onTickEnd = function onTickEnd() {
- var media = this.media;
- if (!(media != null && media.readyState)) {
- // Exit early if we don't have media or if the media hasn't buffered anything yet (readyState 0)
- return;
- }
- this.lastCurrentTime = media.currentTime;
- };
- _proto.doTickIdle = function doTickIdle() {
- var hls = this.hls,
- levels = this.levels,
- media = this.media,
- trackId = this.trackId;
- var config = hls.config;
-
- // 1. if video not attached AND
- // start fragment already requested OR start frag prefetch not enabled
- // 2. if tracks or track not loaded and selected
- // then exit loop
- // => if media not attached but start frag prefetch is enabled and start frag not requested yet, we will not exit loop
- if (!media && (this.startFragRequested || !config.startFragPrefetch) || !(levels != null && levels[trackId])) {
- return;
- }
- var levelInfo = levels[trackId];
- var trackDetails = levelInfo.details;
- if (!trackDetails || trackDetails.live && this.levelLastLoaded !== levelInfo || this.waitForCdnTuneIn(trackDetails)) {
- this.state = State.WAITING_TRACK;
- return;
- }
- var bufferable = this.mediaBuffer ? this.mediaBuffer : this.media;
- if (this.bufferFlushed && bufferable) {
- this.bufferFlushed = false;
- this.afterBufferFlushed(bufferable, ElementaryStreamTypes.AUDIO, PlaylistLevelType.AUDIO);
- }
- var bufferInfo = this.getFwdBufferInfo(bufferable, PlaylistLevelType.AUDIO);
- if (bufferInfo === null) {
- return;
- }
- var bufferedTrack = this.bufferedTrack,
- switchingTrack = this.switchingTrack;
- if (!switchingTrack && this._streamEnded(bufferInfo, trackDetails)) {
- hls.trigger(Events.BUFFER_EOS, {
- type: 'audio'
- });
- this.state = State.ENDED;
- return;
- }
- var mainBufferInfo = this.getFwdBufferInfo(this.videoBuffer ? this.videoBuffer : this.media, PlaylistLevelType.MAIN);
- var bufferLen = bufferInfo.len;
- var maxBufLen = this.getMaxBufferLength(mainBufferInfo == null ? void 0 : mainBufferInfo.len);
- var fragments = trackDetails.fragments;
- var start = fragments[0].start;
- var targetBufferTime = this.flushing ? this.getLoadPosition() : bufferInfo.end;
- if (switchingTrack && media) {
- var pos = this.getLoadPosition();
- // STABLE
- if (bufferedTrack && !mediaAttributesIdentical(switchingTrack.attrs, bufferedTrack.attrs)) {
- targetBufferTime = pos;
- }
- // if currentTime (pos) is less than alt audio playlist start time, it means that alt audio is ahead of currentTime
- if (trackDetails.PTSKnown && pos < start) {
- // if everything is buffered from pos to start or if audio buffer upfront, let's seek to start
- if (bufferInfo.end > start || bufferInfo.nextStart) {
- this.log('Alt audio track ahead of main track, seek to start of alt audio track');
- media.currentTime = start + 0.05;
- }
- }
- }
-
- // if buffer length is less than maxBufLen, or near the end, find a fragment to load
- if (bufferLen >= maxBufLen && !switchingTrack && targetBufferTime < fragments[fragments.length - 1].start) {
- return;
- }
- var frag = this.getNextFragment(targetBufferTime, trackDetails);
- var atGap = false;
- // Avoid loop loading by using nextLoadPosition set for backtracking and skipping consecutive GAP tags
- if (frag && this.isLoopLoading(frag, targetBufferTime)) {
- atGap = !!frag.gap;
- frag = this.getNextFragmentLoopLoading(frag, trackDetails, bufferInfo, PlaylistLevelType.MAIN, maxBufLen);
- }
- if (!frag) {
- this.bufferFlushed = true;
- return;
- }
-
- // Buffer audio up to one target duration ahead of main buffer
- var atBufferSyncLimit = mainBufferInfo && frag.start > mainBufferInfo.end + trackDetails.targetduration;
- if (atBufferSyncLimit ||
- // Or wait for main buffer after buffing some audio
- !(mainBufferInfo != null && mainBufferInfo.len) && bufferInfo.len) {
- // Check fragment-tracker for main fragments since GAP segments do not show up in bufferInfo
- var mainFrag = this.getAppendedFrag(frag.start, PlaylistLevelType.MAIN);
- if (mainFrag === null) {
- return;
- }
- // Bridge gaps in main buffer
- atGap || (atGap = !!mainFrag.gap || !!atBufferSyncLimit && mainBufferInfo.len === 0);
- if (atBufferSyncLimit && !atGap || atGap && bufferInfo.nextStart && bufferInfo.nextStart < mainFrag.end) {
- return;
- }
- }
- this.loadFragment(frag, levelInfo, targetBufferTime);
- };
- _proto.getMaxBufferLength = function getMaxBufferLength(mainBufferLength) {
- var maxConfigBuffer = _BaseStreamController.prototype.getMaxBufferLength.call(this);
- if (!mainBufferLength) {
- return maxConfigBuffer;
- }
- return Math.min(Math.max(maxConfigBuffer, mainBufferLength), this.config.maxMaxBufferLength);
- };
- _proto.onMediaDetaching = function onMediaDetaching() {
- this.videoBuffer = null;
- this.bufferFlushed = this.flushing = false;
- _BaseStreamController.prototype.onMediaDetaching.call(this);
- };
- _proto.onAudioTracksUpdated = function onAudioTracksUpdated(event, _ref2) {
- var audioTracks = _ref2.audioTracks;
- // Reset tranxmuxer is essential for large context switches (Content Steering)
- this.resetTransmuxer();
- this.levels = audioTracks.map(function (mediaPlaylist) {
- return new Level(mediaPlaylist);
- });
- };
- _proto.onAudioTrackSwitching = function onAudioTrackSwitching(event, data) {
- // if any URL found on new audio track, it is an alternate audio track
- var altAudio = !!data.url;
- this.trackId = data.id;
- var fragCurrent = this.fragCurrent;
- if (fragCurrent) {
- fragCurrent.abortRequests();
- this.removeUnbufferedFrags(fragCurrent.start);
- }
- this.resetLoadingState();
- // destroy useless transmuxer when switching audio to main
- if (!altAudio) {
- this.resetTransmuxer();
- } else {
- // switching to audio track, start timer if not already started
- this.setInterval(TICK_INTERVAL$2);
- }
-
- // should we switch tracks ?
- if (altAudio) {
- this.switchingTrack = data;
- // main audio track are handled by stream-controller, just do something if switching to alt audio track
- this.state = State.IDLE;
- this.flushAudioIfNeeded(data);
- } else {
- this.switchingTrack = null;
- this.bufferedTrack = data;
- this.state = State.STOPPED;
- }
- this.tick();
- };
- _proto.onManifestLoading = function onManifestLoading() {
- this.fragmentTracker.removeAllFragments();
- this.startPosition = this.lastCurrentTime = 0;
- this.bufferFlushed = this.flushing = false;
- this.levels = this.mainDetails = this.waitingData = this.bufferedTrack = this.cachedTrackLoadedData = this.switchingTrack = null;
- this.startFragRequested = false;
- this.trackId = this.videoTrackCC = this.waitingVideoCC = -1;
- };
- _proto.onLevelLoaded = function onLevelLoaded(event, data) {
- this.mainDetails = data.details;
- if (this.cachedTrackLoadedData !== null) {
- this.hls.trigger(Events.AUDIO_TRACK_LOADED, this.cachedTrackLoadedData);
- this.cachedTrackLoadedData = null;
- }
- };
- _proto.onAudioTrackLoaded = function onAudioTrackLoaded(event, data) {
- var _track$details;
- if (this.mainDetails == null) {
- this.cachedTrackLoadedData = data;
- return;
- }
- var levels = this.levels;
- var newDetails = data.details,
- trackId = data.id;
- if (!levels) {
- this.warn("Audio tracks were reset while loading level " + trackId);
- return;
- }
- this.log("Audio track " + trackId + " loaded [" + newDetails.startSN + "," + newDetails.endSN + "]" + (newDetails.lastPartSn ? "[part-" + newDetails.lastPartSn + "-" + newDetails.lastPartIndex + "]" : '') + ",duration:" + newDetails.totalduration);
- var track = levels[trackId];
- var sliding = 0;
- if (newDetails.live || (_track$details = track.details) != null && _track$details.live) {
- this.checkLiveUpdate(newDetails);
- var mainDetails = this.mainDetails;
- if (newDetails.deltaUpdateFailed || !mainDetails) {
- return;
- }
- if (!track.details && newDetails.hasProgramDateTime && mainDetails.hasProgramDateTime) {
- // Make sure our audio rendition is aligned with the "main" rendition, using
- // pdt as our reference times.
- alignMediaPlaylistByPDT(newDetails, mainDetails);
- sliding = newDetails.fragments[0].start;
- } else {
- var _this$levelLastLoaded;
- sliding = this.alignPlaylists(newDetails, track.details, (_this$levelLastLoaded = this.levelLastLoaded) == null ? void 0 : _this$levelLastLoaded.details);
- }
- }
- track.details = newDetails;
- this.levelLastLoaded = track;
-
- // compute start position if we are aligned with the main playlist
- if (!this.startFragRequested && (this.mainDetails || !newDetails.live)) {
- this.setStartPosition(this.mainDetails || newDetails, sliding);
- }
- // only switch back to IDLE state if we were waiting for track to start downloading a new fragment
- if (this.state === State.WAITING_TRACK && !this.waitForCdnTuneIn(newDetails)) {
- this.state = State.IDLE;
- }
-
- // trigger handler right now
- this.tick();
- };
- _proto._handleFragmentLoadProgress = function _handleFragmentLoadProgress(data) {
- var _frag$initSegment;
- var frag = data.frag,
- part = data.part,
- payload = data.payload;
- var config = this.config,
- trackId = this.trackId,
- levels = this.levels;
- if (!levels) {
- this.warn("Audio tracks were reset while fragment load was in progress. Fragment " + frag.sn + " of level " + frag.level + " will not be buffered");
- return;
- }
- var track = levels[trackId];
- if (!track) {
- this.warn('Audio track is undefined on fragment load progress');
- return;
- }
- var details = track.details;
- if (!details) {
- this.warn('Audio track details undefined on fragment load progress');
- this.removeUnbufferedFrags(frag.start);
- return;
- }
- var audioCodec = config.defaultAudioCodec || track.audioCodec || 'mp4a.40.2';
- var transmuxer = this.transmuxer;
- if (!transmuxer) {
- transmuxer = this.transmuxer = new TransmuxerInterface(this.hls, PlaylistLevelType.AUDIO, this._handleTransmuxComplete.bind(this), this._handleTransmuxerFlush.bind(this));
- }
-
- // Check if we have video initPTS
- // If not we need to wait for it
- var initPTS = this.initPTS[frag.cc];
- var initSegmentData = (_frag$initSegment = frag.initSegment) == null ? void 0 : _frag$initSegment.data;
- if (initPTS !== undefined) {
- // this.log(`Transmuxing ${sn} of [${details.startSN} ,${details.endSN}],track ${trackId}`);
- // time Offset is accurate if level PTS is known, or if playlist is not sliding (not live)
- var accurateTimeOffset = false; // details.PTSKnown || !details.live;
- var partIndex = part ? part.index : -1;
- var partial = partIndex !== -1;
- var chunkMeta = new ChunkMetadata(frag.level, frag.sn, frag.stats.chunkCount, payload.byteLength, partIndex, partial);
- transmuxer.push(payload, initSegmentData, audioCodec, '', frag, part, details.totalduration, accurateTimeOffset, chunkMeta, initPTS);
- } else {
- this.log("Unknown video PTS for cc " + frag.cc + ", waiting for video PTS before demuxing audio frag " + frag.sn + " of [" + details.startSN + " ," + details.endSN + "],track " + trackId);
- var _this$waitingData = this.waitingData = this.waitingData || {
- frag: frag,
- part: part,
- cache: new ChunkCache(),
- complete: false
- },
- cache = _this$waitingData.cache;
- cache.push(new Uint8Array(payload));
- this.waitingVideoCC = this.videoTrackCC;
- this.state = State.WAITING_INIT_PTS;
- }
- };
- _proto._handleFragmentLoadComplete = function _handleFragmentLoadComplete(fragLoadedData) {
- if (this.waitingData) {
- this.waitingData.complete = true;
- return;
- }
- _BaseStreamController.prototype._handleFragmentLoadComplete.call(this, fragLoadedData);
- };
- _proto.onBufferReset = function onBufferReset( /* event: Events.BUFFER_RESET */
- ) {
- // reset reference to sourcebuffers
- this.mediaBuffer = this.videoBuffer = null;
- this.loadedmetadata = false;
- };
- _proto.onBufferCreated = function onBufferCreated(event, data) {
- var audioTrack = data.tracks.audio;
- if (audioTrack) {
- this.mediaBuffer = audioTrack.buffer || null;
- }
- if (data.tracks.video) {
- this.videoBuffer = data.tracks.video.buffer || null;
- }
- };
- _proto.onFragBuffered = function onFragBuffered(event, data) {
- var frag = data.frag,
- part = data.part;
- if (frag.type !== PlaylistLevelType.AUDIO) {
- if (!this.loadedmetadata && frag.type === PlaylistLevelType.MAIN) {
- var bufferable = this.videoBuffer || this.media;
- if (bufferable) {
- var bufferedTimeRanges = BufferHelper.getBuffered(bufferable);
- if (bufferedTimeRanges.length) {
- this.loadedmetadata = true;
- }
- }
- }
- return;
- }
- if (this.fragContextChanged(frag)) {
- // If a level switch was requested while a fragment was buffering, it will emit the FRAG_BUFFERED event upon completion
- // Avoid setting state back to IDLE or concluding the audio switch; otherwise, the switched-to track will not buffer
- this.warn("Fragment " + frag.sn + (part ? ' p: ' + part.index : '') + " of level " + frag.level + " finished buffering, but was aborted. state: " + this.state + ", audioSwitch: " + (this.switchingTrack ? this.switchingTrack.name : 'false'));
- return;
- }
- if (frag.sn !== 'initSegment') {
- this.fragPrevious = frag;
- var track = this.switchingTrack;
- if (track) {
- this.bufferedTrack = track;
- this.switchingTrack = null;
- this.hls.trigger(Events.AUDIO_TRACK_SWITCHED, _objectSpread2({}, track));
- }
- }
- this.fragBufferedComplete(frag, part);
- };
- _proto.onError = function onError(event, data) {
- var _data$context;
- if (data.fatal) {
- this.state = State.ERROR;
- return;
- }
- switch (data.details) {
- case ErrorDetails.FRAG_GAP:
- case ErrorDetails.FRAG_PARSING_ERROR:
- case ErrorDetails.FRAG_DECRYPT_ERROR:
- case ErrorDetails.FRAG_LOAD_ERROR:
- case ErrorDetails.FRAG_LOAD_TIMEOUT:
- case ErrorDetails.KEY_LOAD_ERROR:
- case ErrorDetails.KEY_LOAD_TIMEOUT:
- this.onFragmentOrKeyLoadError(PlaylistLevelType.AUDIO, data);
- break;
- case ErrorDetails.AUDIO_TRACK_LOAD_ERROR:
- case ErrorDetails.AUDIO_TRACK_LOAD_TIMEOUT:
- case ErrorDetails.LEVEL_PARSING_ERROR:
- // in case of non fatal error while loading track, if not retrying to load track, switch back to IDLE
- if (!data.levelRetry && this.state === State.WAITING_TRACK && ((_data$context = data.context) == null ? void 0 : _data$context.type) === PlaylistContextType.AUDIO_TRACK) {
- this.state = State.IDLE;
- }
- break;
- case ErrorDetails.BUFFER_APPEND_ERROR:
- case ErrorDetails.BUFFER_FULL_ERROR:
- if (!data.parent || data.parent !== 'audio') {
- return;
- }
- if (data.details === ErrorDetails.BUFFER_APPEND_ERROR) {
- this.resetLoadingState();
- return;
- }
- if (this.reduceLengthAndFlushBuffer(data)) {
- this.bufferedTrack = null;
- _BaseStreamController.prototype.flushMainBuffer.call(this, 0, Number.POSITIVE_INFINITY, 'audio');
- }
- break;
- case ErrorDetails.INTERNAL_EXCEPTION:
- this.recoverWorkerError(data);
- break;
- }
- };
- _proto.onBufferFlushing = function onBufferFlushing(event, _ref3) {
- var type = _ref3.type;
- if (type !== ElementaryStreamTypes.VIDEO) {
- this.flushing = true;
- }
- };
- _proto.onBufferFlushed = function onBufferFlushed(event, _ref4) {
- var type = _ref4.type;
- if (type !== ElementaryStreamTypes.VIDEO) {
- this.flushing = false;
- this.bufferFlushed = true;
- if (this.state === State.ENDED) {
- this.state = State.IDLE;
- }
- var mediaBuffer = this.mediaBuffer || this.media;
- if (mediaBuffer) {
- this.afterBufferFlushed(mediaBuffer, type, PlaylistLevelType.AUDIO);
- this.tick();
- }
- }
- };
- _proto._handleTransmuxComplete = function _handleTransmuxComplete(transmuxResult) {
- var _id3$samples;
- var id = 'audio';
- var hls = this.hls;
- var remuxResult = transmuxResult.remuxResult,
- chunkMeta = transmuxResult.chunkMeta;
- var context = this.getCurrentContext(chunkMeta);
- if (!context) {
- this.resetWhenMissingContext(chunkMeta);
- return;
- }
- var frag = context.frag,
- part = context.part,
- level = context.level;
- var details = level.details;
- var audio = remuxResult.audio,
- text = remuxResult.text,
- id3 = remuxResult.id3,
- initSegment = remuxResult.initSegment;
-
- // Check if the current fragment has been aborted. We check this by first seeing if we're still playing the current level.
- // If we are, subsequently check if the currently loading fragment (fragCurrent) has changed.
- if (this.fragContextChanged(frag) || !details) {
- this.fragmentTracker.removeFragment(frag);
- return;
- }
- this.state = State.PARSING;
- if (this.switchingTrack && audio) {
- this.completeAudioSwitch(this.switchingTrack);
- }
- if (initSegment != null && initSegment.tracks) {
- var mapFragment = frag.initSegment || frag;
- this._bufferInitSegment(level, initSegment.tracks, mapFragment, chunkMeta);
- hls.trigger(Events.FRAG_PARSING_INIT_SEGMENT, {
- frag: mapFragment,
- id: id,
- tracks: initSegment.tracks
- });
- // Only flush audio from old audio tracks when PTS is known on new audio track
- }
- if (audio) {
- var startPTS = audio.startPTS,
- endPTS = audio.endPTS,
- startDTS = audio.startDTS,
- endDTS = audio.endDTS;
- if (part) {
- part.elementaryStreams[ElementaryStreamTypes.AUDIO] = {
- startPTS: startPTS,
- endPTS: endPTS,
- startDTS: startDTS,
- endDTS: endDTS
- };
- }
- frag.setElementaryStreamInfo(ElementaryStreamTypes.AUDIO, startPTS, endPTS, startDTS, endDTS);
- this.bufferFragmentData(audio, frag, part, chunkMeta);
- }
- if (id3 != null && (_id3$samples = id3.samples) != null && _id3$samples.length) {
- var emittedID3 = _extends({
- id: id,
- frag: frag,
- details: details
- }, id3);
- hls.trigger(Events.FRAG_PARSING_METADATA, emittedID3);
- }
- if (text) {
- var emittedText = _extends({
- id: id,
- frag: frag,
- details: details
- }, text);
- hls.trigger(Events.FRAG_PARSING_USERDATA, emittedText);
- }
- };
- _proto._bufferInitSegment = function _bufferInitSegment(currentLevel, tracks, frag, chunkMeta) {
- if (this.state !== State.PARSING) {
- return;
- }
- // delete any video track found on audio transmuxer
- if (tracks.video) {
- delete tracks.video;
- }
-
- // include levelCodec in audio and video tracks
- var track = tracks.audio;
- if (!track) {
- return;
- }
- track.id = 'audio';
- var variantAudioCodecs = currentLevel.audioCodec;
- this.log("Init audio buffer, container:" + track.container + ", codecs[level/parsed]=[" + variantAudioCodecs + "/" + track.codec + "]");
- // SourceBuffer will use track.levelCodec if defined
- if (variantAudioCodecs && variantAudioCodecs.split(',').length === 1) {
- track.levelCodec = variantAudioCodecs;
- }
- this.hls.trigger(Events.BUFFER_CODECS, tracks);
- var initSegment = track.initSegment;
- if (initSegment != null && initSegment.byteLength) {
- var segment = {
- type: 'audio',
- frag: frag,
- part: null,
- chunkMeta: chunkMeta,
- parent: frag.type,
- data: initSegment
- };
- this.hls.trigger(Events.BUFFER_APPENDING, segment);
- }
- // trigger handler right now
- this.tickImmediate();
- };
- _proto.loadFragment = function loadFragment(frag, track, targetBufferTime) {
- // only load if fragment is not loaded or if in audio switch
- var fragState = this.fragmentTracker.getState(frag);
- this.fragCurrent = frag;
-
- // we force a frag loading in audio switch as fragment tracker might not have evicted previous frags in case of quick audio switch
- if (this.switchingTrack || fragState === FragmentState.NOT_LOADED || fragState === FragmentState.PARTIAL) {
- var _track$details2;
- if (frag.sn === 'initSegment') {
- this._loadInitSegment(frag, track);
- } else if ((_track$details2 = track.details) != null && _track$details2.live && !this.initPTS[frag.cc]) {
- this.log("Waiting for video PTS in continuity counter " + frag.cc + " of live stream before loading audio fragment " + frag.sn + " of level " + this.trackId);
- this.state = State.WAITING_INIT_PTS;
- var mainDetails = this.mainDetails;
- if (mainDetails && mainDetails.fragments[0].start !== track.details.fragments[0].start) {
- alignMediaPlaylistByPDT(track.details, mainDetails);
- }
- } else {
- this.startFragRequested = true;
- _BaseStreamController.prototype.loadFragment.call(this, frag, track, targetBufferTime);
- }
- } else {
- this.clearTrackerIfNeeded(frag);
- }
- };
- _proto.flushAudioIfNeeded = function flushAudioIfNeeded(switchingTrack) {
- var media = this.media,
- bufferedTrack = this.bufferedTrack;
- var bufferedAttributes = bufferedTrack == null ? void 0 : bufferedTrack.attrs;
- var switchAttributes = switchingTrack.attrs;
- if (media && bufferedAttributes && (bufferedAttributes.CHANNELS !== switchAttributes.CHANNELS || bufferedTrack.name !== switchingTrack.name || bufferedTrack.lang !== switchingTrack.lang)) {
- this.log('Switching audio track : flushing all audio');
- _BaseStreamController.prototype.flushMainBuffer.call(this, 0, Number.POSITIVE_INFINITY, 'audio');
- this.bufferedTrack = null;
- }
- };
- _proto.completeAudioSwitch = function completeAudioSwitch(switchingTrack) {
- var hls = this.hls;
- this.flushAudioIfNeeded(switchingTrack);
- this.bufferedTrack = switchingTrack;
- this.switchingTrack = null;
- hls.trigger(Events.AUDIO_TRACK_SWITCHED, _objectSpread2({}, switchingTrack));
- };
- return AudioStreamController;
- }(BaseStreamController);
-
- var AudioTrackController = /*#__PURE__*/function (_BasePlaylistControll) {
- _inheritsLoose(AudioTrackController, _BasePlaylistControll);
- function AudioTrackController(hls) {
- var _this;
- _this = _BasePlaylistControll.call(this, hls, '[audio-track-controller]') || this;
- _this.tracks = [];
- _this.groupIds = null;
- _this.tracksInGroup = [];
- _this.trackId = -1;
- _this.currentTrack = null;
- _this.selectDefaultTrack = true;
- _this.registerListeners();
- return _this;
- }
- var _proto = AudioTrackController.prototype;
- _proto.registerListeners = function registerListeners() {
- var hls = this.hls;
- hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.on(Events.MANIFEST_PARSED, this.onManifestParsed, this);
- hls.on(Events.LEVEL_LOADING, this.onLevelLoading, this);
- hls.on(Events.LEVEL_SWITCHING, this.onLevelSwitching, this);
- hls.on(Events.AUDIO_TRACK_LOADED, this.onAudioTrackLoaded, this);
- hls.on(Events.ERROR, this.onError, this);
- };
- _proto.unregisterListeners = function unregisterListeners() {
- var hls = this.hls;
- hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.off(Events.MANIFEST_PARSED, this.onManifestParsed, this);
- hls.off(Events.LEVEL_LOADING, this.onLevelLoading, this);
- hls.off(Events.LEVEL_SWITCHING, this.onLevelSwitching, this);
- hls.off(Events.AUDIO_TRACK_LOADED, this.onAudioTrackLoaded, this);
- hls.off(Events.ERROR, this.onError, this);
- };
- _proto.destroy = function destroy() {
- this.unregisterListeners();
- this.tracks.length = 0;
- this.tracksInGroup.length = 0;
- this.currentTrack = null;
- _BasePlaylistControll.prototype.destroy.call(this);
- };
- _proto.onManifestLoading = function onManifestLoading() {
- this.tracks = [];
- this.tracksInGroup = [];
- this.groupIds = null;
- this.currentTrack = null;
- this.trackId = -1;
- this.selectDefaultTrack = true;
- };
- _proto.onManifestParsed = function onManifestParsed(event, data) {
- this.tracks = data.audioTracks || [];
- };
- _proto.onAudioTrackLoaded = function onAudioTrackLoaded(event, data) {
- var id = data.id,
- groupId = data.groupId,
- details = data.details;
- var trackInActiveGroup = this.tracksInGroup[id];
- if (!trackInActiveGroup || trackInActiveGroup.groupId !== groupId) {
- this.warn("Audio track with id:" + id + " and group:" + groupId + " not found in active group " + (trackInActiveGroup == null ? void 0 : trackInActiveGroup.groupId));
- return;
- }
- var curDetails = trackInActiveGroup.details;
- trackInActiveGroup.details = data.details;
- this.log("Audio track " + id + " \"" + trackInActiveGroup.name + "\" lang:" + trackInActiveGroup.lang + " group:" + groupId + " loaded [" + details.startSN + "-" + details.endSN + "]");
- if (id === this.trackId) {
- this.playlistLoaded(id, data, curDetails);
- }
- };
- _proto.onLevelLoading = function onLevelLoading(event, data) {
- this.switchLevel(data.level);
- };
- _proto.onLevelSwitching = function onLevelSwitching(event, data) {
- this.switchLevel(data.level);
- };
- _proto.switchLevel = function switchLevel(levelIndex) {
- var levelInfo = this.hls.levels[levelIndex];
- if (!levelInfo) {
- return;
- }
- var audioGroups = levelInfo.audioGroups || null;
- var currentGroups = this.groupIds;
- var currentTrack = this.currentTrack;
- if (!audioGroups || (currentGroups == null ? void 0 : currentGroups.length) !== (audioGroups == null ? void 0 : audioGroups.length) || audioGroups != null && audioGroups.some(function (groupId) {
- return (currentGroups == null ? void 0 : currentGroups.indexOf(groupId)) === -1;
- })) {
- this.groupIds = audioGroups;
- this.trackId = -1;
- this.currentTrack = null;
- var audioTracks = this.tracks.filter(function (track) {
- return !audioGroups || audioGroups.indexOf(track.groupId) !== -1;
- });
- if (audioTracks.length) {
- // Disable selectDefaultTrack if there are no default tracks
- if (this.selectDefaultTrack && !audioTracks.some(function (track) {
- return track.default;
- })) {
- this.selectDefaultTrack = false;
- }
- // track.id should match hls.audioTracks index
- audioTracks.forEach(function (track, i) {
- track.id = i;
- });
- } else if (!currentTrack && !this.tracksInGroup.length) {
- // Do not dispatch AUDIO_TRACKS_UPDATED when there were and are no tracks
- return;
- }
- this.tracksInGroup = audioTracks;
-
- // Find preferred track
- var audioPreference = this.hls.config.audioPreference;
- if (!currentTrack && audioPreference) {
- var groupIndex = findMatchingOption(audioPreference, audioTracks, audioMatchPredicate);
- if (groupIndex > -1) {
- currentTrack = audioTracks[groupIndex];
- } else {
- var allIndex = findMatchingOption(audioPreference, this.tracks);
- currentTrack = this.tracks[allIndex];
- }
- }
-
- // Select initial track
- var trackId = this.findTrackId(currentTrack);
- if (trackId === -1 && currentTrack) {
- trackId = this.findTrackId(null);
- }
-
- // Dispatch events and load track if needed
- var audioTracksUpdated = {
- audioTracks: audioTracks
- };
- this.log("Updating audio tracks, " + audioTracks.length + " track(s) found in group(s): " + (audioGroups == null ? void 0 : audioGroups.join(',')));
- this.hls.trigger(Events.AUDIO_TRACKS_UPDATED, audioTracksUpdated);
- var selectedTrackId = this.trackId;
- if (trackId !== -1 && selectedTrackId === -1) {
- this.setAudioTrack(trackId);
- } else if (audioTracks.length && selectedTrackId === -1) {
- var _this$groupIds;
- var error = new Error("No audio track selected for current audio group-ID(s): " + ((_this$groupIds = this.groupIds) == null ? void 0 : _this$groupIds.join(',')) + " track count: " + audioTracks.length);
- this.warn(error.message);
- this.hls.trigger(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.AUDIO_TRACK_LOAD_ERROR,
- fatal: true,
- error: error
- });
- }
- } else if (this.shouldReloadPlaylist(currentTrack)) {
- // Retry playlist loading if no playlist is or has been loaded yet
- this.setAudioTrack(this.trackId);
- }
- };
- _proto.onError = function onError(event, data) {
- if (data.fatal || !data.context) {
- return;
- }
- if (data.context.type === PlaylistContextType.AUDIO_TRACK && data.context.id === this.trackId && (!this.groupIds || this.groupIds.indexOf(data.context.groupId) !== -1)) {
- this.requestScheduled = -1;
- this.checkRetry(data);
- }
- };
- _proto.setAudioOption = function setAudioOption(audioOption) {
- var hls = this.hls;
- hls.config.audioPreference = audioOption;
- if (audioOption) {
- var allAudioTracks = this.allAudioTracks;
- this.selectDefaultTrack = false;
- if (allAudioTracks.length) {
- // First see if current option matches (no switch op)
- var currentTrack = this.currentTrack;
- if (currentTrack && matchesOption(audioOption, currentTrack, audioMatchPredicate)) {
- return currentTrack;
- }
- // Find option in available tracks (tracksInGroup)
- var groupIndex = findMatchingOption(audioOption, this.tracksInGroup, audioMatchPredicate);
- if (groupIndex > -1) {
- var track = this.tracksInGroup[groupIndex];
- this.setAudioTrack(groupIndex);
- return track;
- } else if (currentTrack) {
- // Find option in nearest level audio group
- var searchIndex = hls.loadLevel;
- if (searchIndex === -1) {
- searchIndex = hls.firstAutoLevel;
- }
- var switchIndex = findClosestLevelWithAudioGroup(audioOption, hls.levels, allAudioTracks, searchIndex, audioMatchPredicate);
- if (switchIndex === -1) {
- // could not find matching variant
- return null;
- }
- // and switch level to acheive the audio group switch
- hls.nextLoadLevel = switchIndex;
- }
- if (audioOption.channels || audioOption.audioCodec) {
- // Could not find a match with codec / channels predicate
- // Find a match without channels or codec
- var withoutCodecAndChannelsMatch = findMatchingOption(audioOption, allAudioTracks);
- if (withoutCodecAndChannelsMatch > -1) {
- return allAudioTracks[withoutCodecAndChannelsMatch];
- }
- }
- }
- }
- return null;
- };
- _proto.setAudioTrack = function setAudioTrack(newId) {
- var tracks = this.tracksInGroup;
-
- // check if level idx is valid
- if (newId < 0 || newId >= tracks.length) {
- this.warn("Invalid audio track id: " + newId);
- return;
- }
-
- // stopping live reloading timer if any
- this.clearTimer();
- this.selectDefaultTrack = false;
- var lastTrack = this.currentTrack;
- var track = tracks[newId];
- var trackLoaded = track.details && !track.details.live;
- if (newId === this.trackId && track === lastTrack && trackLoaded) {
- return;
- }
- this.log("Switching to audio-track " + newId + " \"" + track.name + "\" lang:" + track.lang + " group:" + track.groupId + " channels:" + track.channels);
- this.trackId = newId;
- this.currentTrack = track;
- this.hls.trigger(Events.AUDIO_TRACK_SWITCHING, _objectSpread2({}, track));
- // Do not reload track unless live
- if (trackLoaded) {
- return;
- }
- var hlsUrlParameters = this.switchParams(track.url, lastTrack == null ? void 0 : lastTrack.details, track.details);
- this.loadPlaylist(hlsUrlParameters);
- };
- _proto.findTrackId = function findTrackId(currentTrack) {
- var audioTracks = this.tracksInGroup;
- for (var i = 0; i < audioTracks.length; i++) {
- var track = audioTracks[i];
- if (this.selectDefaultTrack && !track.default) {
- continue;
- }
- if (!currentTrack || matchesOption(currentTrack, track, audioMatchPredicate)) {
- return i;
- }
- }
- if (currentTrack) {
- var name = currentTrack.name,
- lang = currentTrack.lang,
- assocLang = currentTrack.assocLang,
- characteristics = currentTrack.characteristics,
- audioCodec = currentTrack.audioCodec,
- channels = currentTrack.channels;
- for (var _i = 0; _i < audioTracks.length; _i++) {
- var _track = audioTracks[_i];
- if (matchesOption({
- name: name,
- lang: lang,
- assocLang: assocLang,
- characteristics: characteristics,
- audioCodec: audioCodec,
- channels: channels
- }, _track, audioMatchPredicate)) {
- return _i;
- }
- }
- for (var _i2 = 0; _i2 < audioTracks.length; _i2++) {
- var _track2 = audioTracks[_i2];
- if (mediaAttributesIdentical(currentTrack.attrs, _track2.attrs, ['LANGUAGE', 'ASSOC-LANGUAGE', 'CHARACTERISTICS'])) {
- return _i2;
- }
- }
- for (var _i3 = 0; _i3 < audioTracks.length; _i3++) {
- var _track3 = audioTracks[_i3];
- if (mediaAttributesIdentical(currentTrack.attrs, _track3.attrs, ['LANGUAGE'])) {
- return _i3;
- }
- }
- }
- return -1;
- };
- _proto.loadPlaylist = function loadPlaylist(hlsUrlParameters) {
- var audioTrack = this.currentTrack;
- if (this.shouldLoadPlaylist(audioTrack) && audioTrack) {
- _BasePlaylistControll.prototype.loadPlaylist.call(this);
- var id = audioTrack.id;
- var groupId = audioTrack.groupId;
- var url = audioTrack.url;
- if (hlsUrlParameters) {
- try {
- url = hlsUrlParameters.addDirectives(url);
- } catch (error) {
- this.warn("Could not construct new URL with HLS Delivery Directives: " + error);
- }
- }
- // track not retrieved yet, or live playlist we need to (re)load it
- this.log("loading audio-track playlist " + id + " \"" + audioTrack.name + "\" lang:" + audioTrack.lang + " group:" + groupId);
- this.clearTimer();
- this.hls.trigger(Events.AUDIO_TRACK_LOADING, {
- url: url,
- id: id,
- groupId: groupId,
- deliveryDirectives: hlsUrlParameters || null
- });
- }
- };
- _createClass(AudioTrackController, [{
- key: "allAudioTracks",
- get: function get() {
- return this.tracks;
- }
- }, {
- key: "audioTracks",
- get: function get() {
- return this.tracksInGroup;
- }
- }, {
- key: "audioTrack",
- get: function get() {
- return this.trackId;
- },
- set: function set(newId) {
- // If audio track is selected from API then don't choose from the manifest default track
- this.selectDefaultTrack = false;
- this.setAudioTrack(newId);
- }
- }]);
- return AudioTrackController;
- }(BasePlaylistController);
-
- var TICK_INTERVAL$1 = 500; // how often to tick in ms
-
- var SubtitleStreamController = /*#__PURE__*/function (_BaseStreamController) {
- _inheritsLoose(SubtitleStreamController, _BaseStreamController);
- function SubtitleStreamController(hls, fragmentTracker, keyLoader) {
- var _this;
- _this = _BaseStreamController.call(this, hls, fragmentTracker, keyLoader, '[subtitle-stream-controller]', PlaylistLevelType.SUBTITLE) || this;
- _this.currentTrackId = -1;
- _this.tracksBuffered = [];
- _this.mainDetails = null;
- _this._registerListeners();
- return _this;
- }
- var _proto = SubtitleStreamController.prototype;
- _proto.onHandlerDestroying = function onHandlerDestroying() {
- this._unregisterListeners();
- _BaseStreamController.prototype.onHandlerDestroying.call(this);
- this.mainDetails = null;
- };
- _proto._registerListeners = function _registerListeners() {
- var hls = this.hls;
- hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.on(Events.LEVEL_LOADED, this.onLevelLoaded, this);
- hls.on(Events.ERROR, this.onError, this);
- hls.on(Events.SUBTITLE_TRACKS_UPDATED, this.onSubtitleTracksUpdated, this);
- hls.on(Events.SUBTITLE_TRACK_SWITCH, this.onSubtitleTrackSwitch, this);
- hls.on(Events.SUBTITLE_TRACK_LOADED, this.onSubtitleTrackLoaded, this);
- hls.on(Events.SUBTITLE_FRAG_PROCESSED, this.onSubtitleFragProcessed, this);
- hls.on(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
- hls.on(Events.FRAG_BUFFERED, this.onFragBuffered, this);
- };
- _proto._unregisterListeners = function _unregisterListeners() {
- var hls = this.hls;
- hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.off(Events.LEVEL_LOADED, this.onLevelLoaded, this);
- hls.off(Events.ERROR, this.onError, this);
- hls.off(Events.SUBTITLE_TRACKS_UPDATED, this.onSubtitleTracksUpdated, this);
- hls.off(Events.SUBTITLE_TRACK_SWITCH, this.onSubtitleTrackSwitch, this);
- hls.off(Events.SUBTITLE_TRACK_LOADED, this.onSubtitleTrackLoaded, this);
- hls.off(Events.SUBTITLE_FRAG_PROCESSED, this.onSubtitleFragProcessed, this);
- hls.off(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
- hls.off(Events.FRAG_BUFFERED, this.onFragBuffered, this);
- };
- _proto.startLoad = function startLoad(startPosition) {
- this.stopLoad();
- this.state = State.IDLE;
- this.setInterval(TICK_INTERVAL$1);
- this.nextLoadPosition = this.startPosition = this.lastCurrentTime = startPosition;
- this.tick();
- };
- _proto.onManifestLoading = function onManifestLoading() {
- this.mainDetails = null;
- this.fragmentTracker.removeAllFragments();
- };
- _proto.onMediaDetaching = function onMediaDetaching() {
- this.tracksBuffered = [];
- _BaseStreamController.prototype.onMediaDetaching.call(this);
- };
- _proto.onLevelLoaded = function onLevelLoaded(event, data) {
- this.mainDetails = data.details;
- };
- _proto.onSubtitleFragProcessed = function onSubtitleFragProcessed(event, data) {
- var frag = data.frag,
- success = data.success;
- this.fragPrevious = frag;
- this.state = State.IDLE;
- if (!success) {
- return;
- }
- var buffered = this.tracksBuffered[this.currentTrackId];
- if (!buffered) {
- return;
- }
-
- // Create/update a buffered array matching the interface used by BufferHelper.bufferedInfo
- // so we can re-use the logic used to detect how much has been buffered
- var timeRange;
- var fragStart = frag.start;
- for (var i = 0; i < buffered.length; i++) {
- if (fragStart >= buffered[i].start && fragStart <= buffered[i].end) {
- timeRange = buffered[i];
- break;
- }
- }
- var fragEnd = frag.start + frag.duration;
- if (timeRange) {
- timeRange.end = fragEnd;
- } else {
- timeRange = {
- start: fragStart,
- end: fragEnd
- };
- buffered.push(timeRange);
- }
- this.fragmentTracker.fragBuffered(frag);
- this.fragBufferedComplete(frag, null);
- };
- _proto.onBufferFlushing = function onBufferFlushing(event, data) {
- var startOffset = data.startOffset,
- endOffset = data.endOffset;
- if (startOffset === 0 && endOffset !== Number.POSITIVE_INFINITY) {
- var endOffsetSubtitles = endOffset - 1;
- if (endOffsetSubtitles <= 0) {
- return;
- }
- data.endOffsetSubtitles = Math.max(0, endOffsetSubtitles);
- this.tracksBuffered.forEach(function (buffered) {
- for (var i = 0; i < buffered.length;) {
- if (buffered[i].end <= endOffsetSubtitles) {
- buffered.shift();
- continue;
- } else if (buffered[i].start < endOffsetSubtitles) {
- buffered[i].start = endOffsetSubtitles;
- } else {
- break;
- }
- i++;
- }
- });
- this.fragmentTracker.removeFragmentsInRange(startOffset, endOffsetSubtitles, PlaylistLevelType.SUBTITLE);
- }
- };
- _proto.onFragBuffered = function onFragBuffered(event, data) {
- if (!this.loadedmetadata && data.frag.type === PlaylistLevelType.MAIN) {
- var _this$media;
- if ((_this$media = this.media) != null && _this$media.buffered.length) {
- this.loadedmetadata = true;
- }
- }
- }
-
- // If something goes wrong, proceed to next frag, if we were processing one.
- ;
- _proto.onError = function onError(event, data) {
- var frag = data.frag;
- if ((frag == null ? void 0 : frag.type) === PlaylistLevelType.SUBTITLE) {
- if (data.details === ErrorDetails.FRAG_GAP) {
- this.fragmentTracker.fragBuffered(frag, true);
- }
- if (this.fragCurrent) {
- this.fragCurrent.abortRequests();
- }
- if (this.state !== State.STOPPED) {
- this.state = State.IDLE;
- }
- }
- }
-
- // Got all new subtitle levels.
- ;
- _proto.onSubtitleTracksUpdated = function onSubtitleTracksUpdated(event, _ref) {
- var _this2 = this;
- var subtitleTracks = _ref.subtitleTracks;
- if (this.levels && subtitleOptionsIdentical(this.levels, subtitleTracks)) {
- this.levels = subtitleTracks.map(function (mediaPlaylist) {
- return new Level(mediaPlaylist);
- });
- return;
- }
- this.tracksBuffered = [];
- this.levels = subtitleTracks.map(function (mediaPlaylist) {
- var level = new Level(mediaPlaylist);
- _this2.tracksBuffered[level.id] = [];
- return level;
- });
- this.fragmentTracker.removeFragmentsInRange(0, Number.POSITIVE_INFINITY, PlaylistLevelType.SUBTITLE);
- this.fragPrevious = null;
- this.mediaBuffer = null;
- };
- _proto.onSubtitleTrackSwitch = function onSubtitleTrackSwitch(event, data) {
- var _this$levels;
- this.currentTrackId = data.id;
- if (!((_this$levels = this.levels) != null && _this$levels.length) || this.currentTrackId === -1) {
- this.clearInterval();
- return;
- }
-
- // Check if track has the necessary details to load fragments
- var currentTrack = this.levels[this.currentTrackId];
- if (currentTrack != null && currentTrack.details) {
- this.mediaBuffer = this.mediaBufferTimeRanges;
- } else {
- this.mediaBuffer = null;
- }
- if (currentTrack) {
- this.setInterval(TICK_INTERVAL$1);
- }
- }
-
- // Got a new set of subtitle fragments.
- ;
- _proto.onSubtitleTrackLoaded = function onSubtitleTrackLoaded(event, data) {
- var _track$details;
- var currentTrackId = this.currentTrackId,
- levels = this.levels;
- var newDetails = data.details,
- trackId = data.id;
- if (!levels) {
- this.warn("Subtitle tracks were reset while loading level " + trackId);
- return;
- }
- var track = levels[trackId];
- if (trackId >= levels.length || !track) {
- return;
- }
- this.log("Subtitle track " + trackId + " loaded [" + newDetails.startSN + "," + newDetails.endSN + "]" + (newDetails.lastPartSn ? "[part-" + newDetails.lastPartSn + "-" + newDetails.lastPartIndex + "]" : '') + ",duration:" + newDetails.totalduration);
- this.mediaBuffer = this.mediaBufferTimeRanges;
- var sliding = 0;
- if (newDetails.live || (_track$details = track.details) != null && _track$details.live) {
- var mainDetails = this.mainDetails;
- if (newDetails.deltaUpdateFailed || !mainDetails) {
- return;
- }
- var mainSlidingStartFragment = mainDetails.fragments[0];
- if (!track.details) {
- if (newDetails.hasProgramDateTime && mainDetails.hasProgramDateTime) {
- alignMediaPlaylistByPDT(newDetails, mainDetails);
- sliding = newDetails.fragments[0].start;
- } else if (mainSlidingStartFragment) {
- // line up live playlist with main so that fragments in range are loaded
- sliding = mainSlidingStartFragment.start;
- addSliding(newDetails, sliding);
- }
- } else {
- var _this$levelLastLoaded;
- sliding = this.alignPlaylists(newDetails, track.details, (_this$levelLastLoaded = this.levelLastLoaded) == null ? void 0 : _this$levelLastLoaded.details);
- if (sliding === 0 && mainSlidingStartFragment) {
- // realign with main when there is no overlap with last refresh
- sliding = mainSlidingStartFragment.start;
- addSliding(newDetails, sliding);
- }
- }
- }
- track.details = newDetails;
- this.levelLastLoaded = track;
- if (trackId !== currentTrackId) {
- return;
- }
- if (!this.startFragRequested && (this.mainDetails || !newDetails.live)) {
- this.setStartPosition(this.mainDetails || newDetails, sliding);
- }
-
- // trigger handler right now
- this.tick();
-
- // If playlist is misaligned because of bad PDT or drift, delete details to resync with main on reload
- if (newDetails.live && !this.fragCurrent && this.media && this.state === State.IDLE) {
- var foundFrag = findFragmentByPTS(null, newDetails.fragments, this.media.currentTime, 0);
- if (!foundFrag) {
- this.warn('Subtitle playlist not aligned with playback');
- track.details = undefined;
- }
- }
- };
- _proto._handleFragmentLoadComplete = function _handleFragmentLoadComplete(fragLoadedData) {
- var _this3 = this;
- var frag = fragLoadedData.frag,
- payload = fragLoadedData.payload;
- var decryptData = frag.decryptdata;
- var hls = this.hls;
- if (this.fragContextChanged(frag)) {
- return;
- }
- // check to see if the payload needs to be decrypted
- if (payload && payload.byteLength > 0 && decryptData != null && decryptData.key && decryptData.iv && decryptData.method === 'AES-128') {
- var startTime = performance.now();
- // decrypt the subtitles
- this.decrypter.decrypt(new Uint8Array(payload), decryptData.key.buffer, decryptData.iv.buffer).catch(function (err) {
- hls.trigger(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.FRAG_DECRYPT_ERROR,
- fatal: false,
- error: err,
- reason: err.message,
- frag: frag
- });
- throw err;
- }).then(function (decryptedData) {
- var endTime = performance.now();
- hls.trigger(Events.FRAG_DECRYPTED, {
- frag: frag,
- payload: decryptedData,
- stats: {
- tstart: startTime,
- tdecrypt: endTime
- }
- });
- }).catch(function (err) {
- _this3.warn(err.name + ": " + err.message);
- _this3.state = State.IDLE;
- });
- }
- };
- _proto.doTick = function doTick() {
- if (!this.media) {
- this.state = State.IDLE;
- return;
- }
- if (this.state === State.IDLE) {
- var currentTrackId = this.currentTrackId,
- levels = this.levels;
- var track = levels == null ? void 0 : levels[currentTrackId];
- if (!track || !levels.length || !track.details) {
- return;
- }
- var config = this.config;
- var currentTime = this.getLoadPosition();
- var bufferedInfo = BufferHelper.bufferedInfo(this.tracksBuffered[this.currentTrackId] || [], currentTime, config.maxBufferHole);
- var targetBufferTime = bufferedInfo.end,
- bufferLen = bufferedInfo.len;
- var mainBufferInfo = this.getFwdBufferInfo(this.media, PlaylistLevelType.MAIN);
- var trackDetails = track.details;
- var maxBufLen = this.getMaxBufferLength(mainBufferInfo == null ? void 0 : mainBufferInfo.len) + trackDetails.levelTargetDuration;
- if (bufferLen > maxBufLen) {
- return;
- }
- var fragments = trackDetails.fragments;
- var fragLen = fragments.length;
- var end = trackDetails.edge;
- var foundFrag = null;
- var fragPrevious = this.fragPrevious;
- if (targetBufferTime < end) {
- var tolerance = config.maxFragLookUpTolerance;
- var lookupTolerance = targetBufferTime > end - tolerance ? 0 : tolerance;
- foundFrag = findFragmentByPTS(fragPrevious, fragments, Math.max(fragments[0].start, targetBufferTime), lookupTolerance);
- if (!foundFrag && fragPrevious && fragPrevious.start < fragments[0].start) {
- foundFrag = fragments[0];
- }
- } else {
- foundFrag = fragments[fragLen - 1];
- }
- if (!foundFrag) {
- return;
- }
- foundFrag = this.mapToInitFragWhenRequired(foundFrag);
- if (foundFrag.sn !== 'initSegment') {
- // Load earlier fragment in same discontinuity to make up for misaligned playlists and cues that extend beyond end of segment
- var curSNIdx = foundFrag.sn - trackDetails.startSN;
- var prevFrag = fragments[curSNIdx - 1];
- if (prevFrag && prevFrag.cc === foundFrag.cc && this.fragmentTracker.getState(prevFrag) === FragmentState.NOT_LOADED) {
- foundFrag = prevFrag;
- }
- }
- if (this.fragmentTracker.getState(foundFrag) === FragmentState.NOT_LOADED) {
- // only load if fragment is not loaded
- this.loadFragment(foundFrag, track, targetBufferTime);
- }
- }
- };
- _proto.getMaxBufferLength = function getMaxBufferLength(mainBufferLength) {
- var maxConfigBuffer = _BaseStreamController.prototype.getMaxBufferLength.call(this);
- if (!mainBufferLength) {
- return maxConfigBuffer;
- }
- return Math.max(maxConfigBuffer, mainBufferLength);
- };
- _proto.loadFragment = function loadFragment(frag, level, targetBufferTime) {
- this.fragCurrent = frag;
- if (frag.sn === 'initSegment') {
- this._loadInitSegment(frag, level);
- } else {
- this.startFragRequested = true;
- _BaseStreamController.prototype.loadFragment.call(this, frag, level, targetBufferTime);
- }
- };
- _createClass(SubtitleStreamController, [{
- key: "mediaBufferTimeRanges",
- get: function get() {
- return new BufferableInstance(this.tracksBuffered[this.currentTrackId] || []);
- }
- }]);
- return SubtitleStreamController;
- }(BaseStreamController);
- var BufferableInstance = function BufferableInstance(timeranges) {
- this.buffered = void 0;
- var getRange = function getRange(name, index, length) {
- index = index >>> 0;
- if (index > length - 1) {
- throw new DOMException("Failed to execute '" + name + "' on 'TimeRanges': The index provided (" + index + ") is greater than the maximum bound (" + length + ")");
- }
- return timeranges[index][name];
- };
- this.buffered = {
- get length() {
- return timeranges.length;
- },
- end: function end(index) {
- return getRange('end', index, timeranges.length);
- },
- start: function start(index) {
- return getRange('start', index, timeranges.length);
- }
- };
- };
-
- var SubtitleTrackController = /*#__PURE__*/function (_BasePlaylistControll) {
- _inheritsLoose(SubtitleTrackController, _BasePlaylistControll);
- function SubtitleTrackController(hls) {
- var _this;
- _this = _BasePlaylistControll.call(this, hls, '[subtitle-track-controller]') || this;
- _this.media = null;
- _this.tracks = [];
- _this.groupIds = null;
- _this.tracksInGroup = [];
- _this.trackId = -1;
- _this.currentTrack = null;
- _this.selectDefaultTrack = true;
- _this.queuedDefaultTrack = -1;
- _this.asyncPollTrackChange = function () {
- return _this.pollTrackChange(0);
- };
- _this.useTextTrackPolling = false;
- _this.subtitlePollingInterval = -1;
- _this._subtitleDisplay = true;
- _this.onTextTracksChanged = function () {
- if (!_this.useTextTrackPolling) {
- self.clearInterval(_this.subtitlePollingInterval);
- }
- // Media is undefined when switching streams via loadSource()
- if (!_this.media || !_this.hls.config.renderTextTracksNatively) {
- return;
- }
- var textTrack = null;
- var tracks = filterSubtitleTracks(_this.media.textTracks);
- for (var i = 0; i < tracks.length; i++) {
- if (tracks[i].mode === 'hidden') {
- // Do not break in case there is a following track with showing.
- textTrack = tracks[i];
- } else if (tracks[i].mode === 'showing') {
- textTrack = tracks[i];
- break;
- }
- }
-
- // Find internal track index for TextTrack
- var trackId = _this.findTrackForTextTrack(textTrack);
- if (_this.subtitleTrack !== trackId) {
- _this.setSubtitleTrack(trackId);
- }
- };
- _this.registerListeners();
- return _this;
- }
- var _proto = SubtitleTrackController.prototype;
- _proto.destroy = function destroy() {
- this.unregisterListeners();
- this.tracks.length = 0;
- this.tracksInGroup.length = 0;
- this.currentTrack = null;
- this.onTextTracksChanged = this.asyncPollTrackChange = null;
- _BasePlaylistControll.prototype.destroy.call(this);
- };
- _proto.registerListeners = function registerListeners() {
- var hls = this.hls;
- hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.on(Events.MANIFEST_PARSED, this.onManifestParsed, this);
- hls.on(Events.LEVEL_LOADING, this.onLevelLoading, this);
- hls.on(Events.LEVEL_SWITCHING, this.onLevelSwitching, this);
- hls.on(Events.SUBTITLE_TRACK_LOADED, this.onSubtitleTrackLoaded, this);
- hls.on(Events.ERROR, this.onError, this);
- };
- _proto.unregisterListeners = function unregisterListeners() {
- var hls = this.hls;
- hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.off(Events.MANIFEST_PARSED, this.onManifestParsed, this);
- hls.off(Events.LEVEL_LOADING, this.onLevelLoading, this);
- hls.off(Events.LEVEL_SWITCHING, this.onLevelSwitching, this);
- hls.off(Events.SUBTITLE_TRACK_LOADED, this.onSubtitleTrackLoaded, this);
- hls.off(Events.ERROR, this.onError, this);
- }
-
- // Listen for subtitle track change, then extract the current track ID.
- ;
- _proto.onMediaAttached = function onMediaAttached(event, data) {
- this.media = data.media;
- if (!this.media) {
- return;
- }
- if (this.queuedDefaultTrack > -1) {
- this.subtitleTrack = this.queuedDefaultTrack;
- this.queuedDefaultTrack = -1;
- }
- this.useTextTrackPolling = !(this.media.textTracks && 'onchange' in this.media.textTracks);
- if (this.useTextTrackPolling) {
- this.pollTrackChange(500);
- } else {
- this.media.textTracks.addEventListener('change', this.asyncPollTrackChange);
- }
- };
- _proto.pollTrackChange = function pollTrackChange(timeout) {
- self.clearInterval(this.subtitlePollingInterval);
- this.subtitlePollingInterval = self.setInterval(this.onTextTracksChanged, timeout);
- };
- _proto.onMediaDetaching = function onMediaDetaching() {
- if (!this.media) {
- return;
- }
- self.clearInterval(this.subtitlePollingInterval);
- if (!this.useTextTrackPolling) {
- this.media.textTracks.removeEventListener('change', this.asyncPollTrackChange);
- }
- if (this.trackId > -1) {
- this.queuedDefaultTrack = this.trackId;
- }
- var textTracks = filterSubtitleTracks(this.media.textTracks);
- // Clear loaded cues on media detachment from tracks
- textTracks.forEach(function (track) {
- clearCurrentCues(track);
- });
- // Disable all subtitle tracks before detachment so when reattached only tracks in that content are enabled.
- this.subtitleTrack = -1;
- this.media = null;
- };
- _proto.onManifestLoading = function onManifestLoading() {
- this.tracks = [];
- this.groupIds = null;
- this.tracksInGroup = [];
- this.trackId = -1;
- this.currentTrack = null;
- this.selectDefaultTrack = true;
- }
-
- // Fired whenever a new manifest is loaded.
- ;
- _proto.onManifestParsed = function onManifestParsed(event, data) {
- this.tracks = data.subtitleTracks;
- };
- _proto.onSubtitleTrackLoaded = function onSubtitleTrackLoaded(event, data) {
- var id = data.id,
- groupId = data.groupId,
- details = data.details;
- var trackInActiveGroup = this.tracksInGroup[id];
- if (!trackInActiveGroup || trackInActiveGroup.groupId !== groupId) {
- this.warn("Subtitle track with id:" + id + " and group:" + groupId + " not found in active group " + (trackInActiveGroup == null ? void 0 : trackInActiveGroup.groupId));
- return;
- }
- var curDetails = trackInActiveGroup.details;
- trackInActiveGroup.details = data.details;
- this.log("Subtitle track " + id + " \"" + trackInActiveGroup.name + "\" lang:" + trackInActiveGroup.lang + " group:" + groupId + " loaded [" + details.startSN + "-" + details.endSN + "]");
- if (id === this.trackId) {
- this.playlistLoaded(id, data, curDetails);
- }
- };
- _proto.onLevelLoading = function onLevelLoading(event, data) {
- this.switchLevel(data.level);
- };
- _proto.onLevelSwitching = function onLevelSwitching(event, data) {
- this.switchLevel(data.level);
- };
- _proto.switchLevel = function switchLevel(levelIndex) {
- var levelInfo = this.hls.levels[levelIndex];
- if (!levelInfo) {
- return;
- }
- var subtitleGroups = levelInfo.subtitleGroups || null;
- var currentGroups = this.groupIds;
- var currentTrack = this.currentTrack;
- if (!subtitleGroups || (currentGroups == null ? void 0 : currentGroups.length) !== (subtitleGroups == null ? void 0 : subtitleGroups.length) || subtitleGroups != null && subtitleGroups.some(function (groupId) {
- return (currentGroups == null ? void 0 : currentGroups.indexOf(groupId)) === -1;
- })) {
- this.groupIds = subtitleGroups;
- this.trackId = -1;
- this.currentTrack = null;
- var subtitleTracks = this.tracks.filter(function (track) {
- return !subtitleGroups || subtitleGroups.indexOf(track.groupId) !== -1;
- });
- if (subtitleTracks.length) {
- // Disable selectDefaultTrack if there are no default tracks
- if (this.selectDefaultTrack && !subtitleTracks.some(function (track) {
- return track.default;
- })) {
- this.selectDefaultTrack = false;
- }
- // track.id should match hls.audioTracks index
- subtitleTracks.forEach(function (track, i) {
- track.id = i;
- });
- } else if (!currentTrack && !this.tracksInGroup.length) {
- // Do not dispatch SUBTITLE_TRACKS_UPDATED when there were and are no tracks
- return;
- }
- this.tracksInGroup = subtitleTracks;
-
- // Find preferred track
- var subtitlePreference = this.hls.config.subtitlePreference;
- if (!currentTrack && subtitlePreference) {
- this.selectDefaultTrack = false;
- var groupIndex = findMatchingOption(subtitlePreference, subtitleTracks);
- if (groupIndex > -1) {
- currentTrack = subtitleTracks[groupIndex];
- } else {
- var allIndex = findMatchingOption(subtitlePreference, this.tracks);
- currentTrack = this.tracks[allIndex];
- }
- }
-
- // Select initial track
- var trackId = this.findTrackId(currentTrack);
- if (trackId === -1 && currentTrack) {
- trackId = this.findTrackId(null);
- }
-
- // Dispatch events and load track if needed
- var subtitleTracksUpdated = {
- subtitleTracks: subtitleTracks
- };
- this.log("Updating subtitle tracks, " + subtitleTracks.length + " track(s) found in \"" + (subtitleGroups == null ? void 0 : subtitleGroups.join(',')) + "\" group-id");
- this.hls.trigger(Events.SUBTITLE_TRACKS_UPDATED, subtitleTracksUpdated);
- if (trackId !== -1 && this.trackId === -1) {
- this.setSubtitleTrack(trackId);
- }
- } else if (this.shouldReloadPlaylist(currentTrack)) {
- // Retry playlist loading if no playlist is or has been loaded yet
- this.setSubtitleTrack(this.trackId);
- }
- };
- _proto.findTrackId = function findTrackId(currentTrack) {
- var tracks = this.tracksInGroup;
- var selectDefault = this.selectDefaultTrack;
- for (var i = 0; i < tracks.length; i++) {
- var track = tracks[i];
- if (selectDefault && !track.default || !selectDefault && !currentTrack) {
- continue;
- }
- if (!currentTrack || matchesOption(track, currentTrack)) {
- return i;
- }
- }
- if (currentTrack) {
- for (var _i = 0; _i < tracks.length; _i++) {
- var _track = tracks[_i];
- if (mediaAttributesIdentical(currentTrack.attrs, _track.attrs, ['LANGUAGE', 'ASSOC-LANGUAGE', 'CHARACTERISTICS'])) {
- return _i;
- }
- }
- for (var _i2 = 0; _i2 < tracks.length; _i2++) {
- var _track2 = tracks[_i2];
- if (mediaAttributesIdentical(currentTrack.attrs, _track2.attrs, ['LANGUAGE'])) {
- return _i2;
- }
- }
- }
- return -1;
- };
- _proto.findTrackForTextTrack = function findTrackForTextTrack(textTrack) {
- if (textTrack) {
- var tracks = this.tracksInGroup;
- for (var i = 0; i < tracks.length; i++) {
- var track = tracks[i];
- if (subtitleTrackMatchesTextTrack(track, textTrack)) {
- return i;
- }
- }
- }
- return -1;
- };
- _proto.onError = function onError(event, data) {
- if (data.fatal || !data.context) {
- return;
- }
- if (data.context.type === PlaylistContextType.SUBTITLE_TRACK && data.context.id === this.trackId && (!this.groupIds || this.groupIds.indexOf(data.context.groupId) !== -1)) {
- this.checkRetry(data);
- }
- };
- _proto.setSubtitleOption = function setSubtitleOption(subtitleOption) {
- this.hls.config.subtitlePreference = subtitleOption;
- if (subtitleOption) {
- var allSubtitleTracks = this.allSubtitleTracks;
- this.selectDefaultTrack = false;
- if (allSubtitleTracks.length) {
- // First see if current option matches (no switch op)
- var currentTrack = this.currentTrack;
- if (currentTrack && matchesOption(subtitleOption, currentTrack)) {
- return currentTrack;
- }
- // Find option in current group
- var groupIndex = findMatchingOption(subtitleOption, this.tracksInGroup);
- if (groupIndex > -1) {
- var track = this.tracksInGroup[groupIndex];
- this.setSubtitleTrack(groupIndex);
- return track;
- } else if (currentTrack) {
- // If this is not the initial selection return null
- // option should have matched one in active group
- return null;
- } else {
- // Find the option in all tracks for initial selection
- var allIndex = findMatchingOption(subtitleOption, allSubtitleTracks);
- if (allIndex > -1) {
- return allSubtitleTracks[allIndex];
- }
- }
- }
- }
- return null;
- };
- _proto.loadPlaylist = function loadPlaylist(hlsUrlParameters) {
- _BasePlaylistControll.prototype.loadPlaylist.call(this);
- var currentTrack = this.currentTrack;
- if (this.shouldLoadPlaylist(currentTrack) && currentTrack) {
- var id = currentTrack.id;
- var groupId = currentTrack.groupId;
- var url = currentTrack.url;
- if (hlsUrlParameters) {
- try {
- url = hlsUrlParameters.addDirectives(url);
- } catch (error) {
- this.warn("Could not construct new URL with HLS Delivery Directives: " + error);
- }
- }
- this.log("Loading subtitle playlist for id " + id);
- this.hls.trigger(Events.SUBTITLE_TRACK_LOADING, {
- url: url,
- id: id,
- groupId: groupId,
- deliveryDirectives: hlsUrlParameters || null
- });
- }
- }
-
- /**
- * Disables the old subtitleTrack and sets current mode on the next subtitleTrack.
- * This operates on the DOM textTracks.
- * A value of -1 will disable all subtitle tracks.
- */;
- _proto.toggleTrackModes = function toggleTrackModes() {
- var media = this.media;
- if (!media) {
- return;
- }
- var textTracks = filterSubtitleTracks(media.textTracks);
- var currentTrack = this.currentTrack;
- var nextTrack;
- if (currentTrack) {
- nextTrack = textTracks.filter(function (textTrack) {
- return subtitleTrackMatchesTextTrack(currentTrack, textTrack);
- })[0];
- if (!nextTrack) {
- this.warn("Unable to find subtitle TextTrack with name \"" + currentTrack.name + "\" and language \"" + currentTrack.lang + "\"");
- }
- }
- [].slice.call(textTracks).forEach(function (track) {
- if (track.mode !== 'disabled' && track !== nextTrack) {
- track.mode = 'disabled';
- }
- });
- if (nextTrack) {
- var mode = this.subtitleDisplay ? 'showing' : 'hidden';
- if (nextTrack.mode !== mode) {
- nextTrack.mode = mode;
- }
- }
- }
-
- /**
- * This method is responsible for validating the subtitle index and periodically reloading if live.
- * Dispatches the SUBTITLE_TRACK_SWITCH event, which instructs the subtitle-stream-controller to load the selected track.
- */;
- _proto.setSubtitleTrack = function setSubtitleTrack(newId) {
- var tracks = this.tracksInGroup;
-
- // setting this.subtitleTrack will trigger internal logic
- // if media has not been attached yet, it will fail
- // we keep a reference to the default track id
- // and we'll set subtitleTrack when onMediaAttached is triggered
- if (!this.media) {
- this.queuedDefaultTrack = newId;
- return;
- }
-
- // exit if track id as already set or invalid
- if (newId < -1 || newId >= tracks.length || !isFiniteNumber(newId)) {
- this.warn("Invalid subtitle track id: " + newId);
- return;
- }
-
- // stopping live reloading timer if any
- this.clearTimer();
- this.selectDefaultTrack = false;
- var lastTrack = this.currentTrack;
- var track = tracks[newId] || null;
- this.trackId = newId;
- this.currentTrack = track;
- this.toggleTrackModes();
- if (!track) {
- // switch to -1
- this.hls.trigger(Events.SUBTITLE_TRACK_SWITCH, {
- id: newId
- });
- return;
- }
- var trackLoaded = !!track.details && !track.details.live;
- if (newId === this.trackId && track === lastTrack && trackLoaded) {
- return;
- }
- this.log("Switching to subtitle-track " + newId + (track ? " \"" + track.name + "\" lang:" + track.lang + " group:" + track.groupId : ''));
- var id = track.id,
- _track$groupId = track.groupId,
- groupId = _track$groupId === void 0 ? '' : _track$groupId,
- name = track.name,
- type = track.type,
- url = track.url;
- this.hls.trigger(Events.SUBTITLE_TRACK_SWITCH, {
- id: id,
- groupId: groupId,
- name: name,
- type: type,
- url: url
- });
- var hlsUrlParameters = this.switchParams(track.url, lastTrack == null ? void 0 : lastTrack.details, track.details);
- this.loadPlaylist(hlsUrlParameters);
- };
- _createClass(SubtitleTrackController, [{
- key: "subtitleDisplay",
- get: function get() {
- return this._subtitleDisplay;
- },
- set: function set(value) {
- this._subtitleDisplay = value;
- if (this.trackId > -1) {
- this.toggleTrackModes();
- }
- }
- }, {
- key: "allSubtitleTracks",
- get: function get() {
- return this.tracks;
- }
-
- /** get alternate subtitle tracks list from playlist **/
- }, {
- key: "subtitleTracks",
- get: function get() {
- return this.tracksInGroup;
- }
-
- /** get/set index of the selected subtitle track (based on index in subtitle track lists) **/
- }, {
- key: "subtitleTrack",
- get: function get() {
- return this.trackId;
- },
- set: function set(newId) {
- this.selectDefaultTrack = false;
- this.setSubtitleTrack(newId);
- }
- }]);
- return SubtitleTrackController;
- }(BasePlaylistController);
-
- var BufferOperationQueue = /*#__PURE__*/function () {
- function BufferOperationQueue(sourceBufferReference) {
- this.buffers = void 0;
- this.queues = {
- video: [],
- audio: [],
- audiovideo: []
- };
- this.buffers = sourceBufferReference;
- }
- var _proto = BufferOperationQueue.prototype;
- _proto.append = function append(operation, type, pending) {
- var queue = this.queues[type];
- queue.push(operation);
- if (queue.length === 1 && !pending) {
- this.executeNext(type);
- }
- };
- _proto.insertAbort = function insertAbort(operation, type) {
- var queue = this.queues[type];
- queue.unshift(operation);
- this.executeNext(type);
- };
- _proto.appendBlocker = function appendBlocker(type) {
- var execute;
- var promise = new Promise(function (resolve) {
- execute = resolve;
- });
- var operation = {
- execute: execute,
- onStart: function onStart() {},
- onComplete: function onComplete() {},
- onError: function onError() {}
- };
- this.append(operation, type);
- return promise;
- };
- _proto.executeNext = function executeNext(type) {
- var queue = this.queues[type];
- if (queue.length) {
- var operation = queue[0];
- try {
- // Operations are expected to result in an 'updateend' event being fired. If not, the queue will lock. Operations
- // which do not end with this event must call _onSBUpdateEnd manually
- operation.execute();
- } catch (error) {
- logger.warn("[buffer-operation-queue]: Exception executing \"" + type + "\" SourceBuffer operation: " + error);
- operation.onError(error);
-
- // Only shift the current operation off, otherwise the updateend handler will do this for us
- var sb = this.buffers[type];
- if (!(sb != null && sb.updating)) {
- this.shiftAndExecuteNext(type);
- }
- }
- }
- };
- _proto.shiftAndExecuteNext = function shiftAndExecuteNext(type) {
- this.queues[type].shift();
- this.executeNext(type);
- };
- _proto.current = function current(type) {
- return this.queues[type][0];
- };
- return BufferOperationQueue;
- }();
-
- var VIDEO_CODEC_PROFILE_REPLACE = /(avc[1234]|hvc1|hev1|dvh[1e]|vp09|av01)(?:\.[^.,]+)+/;
- var BufferController = /*#__PURE__*/function () {
- function BufferController(hls) {
- var _this = this;
- // The level details used to determine duration, target-duration and live
- this.details = null;
- // cache the self generated object url to detect hijack of video tag
- this._objectUrl = null;
- // A queue of buffer operations which require the SourceBuffer to not be updating upon execution
- this.operationQueue = void 0;
- // References to event listeners for each SourceBuffer, so that they can be referenced for event removal
- this.listeners = void 0;
- this.hls = void 0;
- // The number of BUFFER_CODEC events received before any sourceBuffers are created
- this.bufferCodecEventsExpected = 0;
- // The total number of BUFFER_CODEC events received
- this._bufferCodecEventsTotal = 0;
- // A reference to the attached media element
- this.media = null;
- // A reference to the active media source
- this.mediaSource = null;
- // Last MP3 audio chunk appended
- this.lastMpegAudioChunk = null;
- this.appendSource = void 0;
- // counters
- this.appendErrors = {
- audio: 0,
- video: 0,
- audiovideo: 0
- };
- this.tracks = {};
- this.pendingTracks = {};
- this.sourceBuffer = void 0;
- this.log = void 0;
- this.warn = void 0;
- this.error = void 0;
- this._onEndStreaming = function (event) {
- if (!_this.hls) {
- return;
- }
- _this.hls.pauseBuffering();
- };
- this._onStartStreaming = function (event) {
- if (!_this.hls) {
- return;
- }
- _this.hls.resumeBuffering();
- };
- // Keep as arrow functions so that we can directly reference these functions directly as event listeners
- this._onMediaSourceOpen = function () {
- var media = _this.media,
- mediaSource = _this.mediaSource;
- _this.log('Media source opened');
- if (media) {
- media.removeEventListener('emptied', _this._onMediaEmptied);
- _this.updateMediaElementDuration();
- _this.hls.trigger(Events.MEDIA_ATTACHED, {
- media: media,
- mediaSource: mediaSource
- });
- }
- if (mediaSource) {
- // once received, don't listen anymore to sourceopen event
- mediaSource.removeEventListener('sourceopen', _this._onMediaSourceOpen);
- }
- _this.checkPendingTracks();
- };
- this._onMediaSourceClose = function () {
- _this.log('Media source closed');
- };
- this._onMediaSourceEnded = function () {
- _this.log('Media source ended');
- };
- this._onMediaEmptied = function () {
- var mediaSrc = _this.mediaSrc,
- _objectUrl = _this._objectUrl;
- if (mediaSrc !== _objectUrl) {
- logger.error("Media element src was set while attaching MediaSource (" + _objectUrl + " > " + mediaSrc + ")");
- }
- };
- this.hls = hls;
- var logPrefix = '[buffer-controller]';
- this.appendSource = isManagedMediaSource(getMediaSource(hls.config.preferManagedMediaSource));
- this.log = logger.log.bind(logger, logPrefix);
- this.warn = logger.warn.bind(logger, logPrefix);
- this.error = logger.error.bind(logger, logPrefix);
- this._initSourceBuffer();
- this.registerListeners();
- }
- var _proto = BufferController.prototype;
- _proto.hasSourceTypes = function hasSourceTypes() {
- return this.getSourceBufferTypes().length > 0 || Object.keys(this.pendingTracks).length > 0;
- };
- _proto.destroy = function destroy() {
- this.unregisterListeners();
- this.details = null;
- this.lastMpegAudioChunk = null;
- // @ts-ignore
- this.hls = null;
- };
- _proto.registerListeners = function registerListeners() {
- var hls = this.hls;
- hls.on(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
- hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.on(Events.MANIFEST_PARSED, this.onManifestParsed, this);
- hls.on(Events.BUFFER_RESET, this.onBufferReset, this);
- hls.on(Events.BUFFER_APPENDING, this.onBufferAppending, this);
- hls.on(Events.BUFFER_CODECS, this.onBufferCodecs, this);
- hls.on(Events.BUFFER_EOS, this.onBufferEos, this);
- hls.on(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
- hls.on(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
- hls.on(Events.FRAG_PARSED, this.onFragParsed, this);
- hls.on(Events.FRAG_CHANGED, this.onFragChanged, this);
- };
- _proto.unregisterListeners = function unregisterListeners() {
- var hls = this.hls;
- hls.off(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
- hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.off(Events.MANIFEST_PARSED, this.onManifestParsed, this);
- hls.off(Events.BUFFER_RESET, this.onBufferReset, this);
- hls.off(Events.BUFFER_APPENDING, this.onBufferAppending, this);
- hls.off(Events.BUFFER_CODECS, this.onBufferCodecs, this);
- hls.off(Events.BUFFER_EOS, this.onBufferEos, this);
- hls.off(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
- hls.off(Events.LEVEL_UPDATED, this.onLevelUpdated, this);
- hls.off(Events.FRAG_PARSED, this.onFragParsed, this);
- hls.off(Events.FRAG_CHANGED, this.onFragChanged, this);
- };
- _proto._initSourceBuffer = function _initSourceBuffer() {
- this.sourceBuffer = {};
- this.operationQueue = new BufferOperationQueue(this.sourceBuffer);
- this.listeners = {
- audio: [],
- video: [],
- audiovideo: []
- };
- this.appendErrors = {
- audio: 0,
- video: 0,
- audiovideo: 0
- };
- this.lastMpegAudioChunk = null;
- };
- _proto.onManifestLoading = function onManifestLoading() {
- this.bufferCodecEventsExpected = this._bufferCodecEventsTotal = 0;
- this.details = null;
- };
- _proto.onManifestParsed = function onManifestParsed(event, data) {
- // in case of alt audio 2 BUFFER_CODECS events will be triggered, one per stream controller
- // sourcebuffers will be created all at once when the expected nb of tracks will be reached
- // in case alt audio is not used, only one BUFFER_CODEC event will be fired from main stream controller
- // it will contain the expected nb of source buffers, no need to compute it
- var codecEvents = 2;
- if (data.audio && !data.video || !data.altAudio || !true) {
- codecEvents = 1;
- }
- this.bufferCodecEventsExpected = this._bufferCodecEventsTotal = codecEvents;
- this.log(this.bufferCodecEventsExpected + " bufferCodec event(s) expected");
- };
- _proto.onMediaAttaching = function onMediaAttaching(event, data) {
- var media = this.media = data.media;
- var MediaSource = getMediaSource(this.appendSource);
- if (media && MediaSource) {
- var _ms$constructor;
- var ms = this.mediaSource = new MediaSource();
- this.log("created media source: " + ((_ms$constructor = ms.constructor) == null ? void 0 : _ms$constructor.name));
- // MediaSource listeners are arrow functions with a lexical scope, and do not need to be bound
- ms.addEventListener('sourceopen', this._onMediaSourceOpen);
- ms.addEventListener('sourceended', this._onMediaSourceEnded);
- ms.addEventListener('sourceclose', this._onMediaSourceClose);
- if (this.appendSource) {
- ms.addEventListener('startstreaming', this._onStartStreaming);
- ms.addEventListener('endstreaming', this._onEndStreaming);
- }
-
- // cache the locally generated object url
- var objectUrl = this._objectUrl = self.URL.createObjectURL(ms);
- // link video and media Source
- if (this.appendSource) {
- try {
- media.removeAttribute('src');
- // ManagedMediaSource will not open without disableRemotePlayback set to false or source alternatives
- var MMS = self.ManagedMediaSource;
- media.disableRemotePlayback = media.disableRemotePlayback || MMS && ms instanceof MMS;
- removeSourceChildren(media);
- addSource(media, objectUrl);
- media.load();
- } catch (error) {
- media.src = objectUrl;
- }
- } else {
- media.src = objectUrl;
- }
- media.addEventListener('emptied', this._onMediaEmptied);
- }
- };
- _proto.onMediaDetaching = function onMediaDetaching() {
- var media = this.media,
- mediaSource = this.mediaSource,
- _objectUrl = this._objectUrl;
- if (mediaSource) {
- this.log('media source detaching');
- if (mediaSource.readyState === 'open') {
- try {
- // endOfStream could trigger exception if any sourcebuffer is in updating state
- // we don't really care about checking sourcebuffer state here,
- // as we are anyway detaching the MediaSource
- // let's just avoid this exception to propagate
- mediaSource.endOfStream();
- } catch (err) {
- this.warn("onMediaDetaching: " + err.message + " while calling endOfStream");
- }
- }
- // Clean up the SourceBuffers by invoking onBufferReset
- this.onBufferReset();
- mediaSource.removeEventListener('sourceopen', this._onMediaSourceOpen);
- mediaSource.removeEventListener('sourceended', this._onMediaSourceEnded);
- mediaSource.removeEventListener('sourceclose', this._onMediaSourceClose);
- if (this.appendSource) {
- mediaSource.removeEventListener('startstreaming', this._onStartStreaming);
- mediaSource.removeEventListener('endstreaming', this._onEndStreaming);
- }
-
- // Detach properly the MediaSource from the HTMLMediaElement as
- // suggested in https://github.com/w3c/media-source/issues/53.
- if (media) {
- media.removeEventListener('emptied', this._onMediaEmptied);
- if (_objectUrl) {
- self.URL.revokeObjectURL(_objectUrl);
- }
-
- // clean up video tag src only if it's our own url. some external libraries might
- // hijack the video tag and change its 'src' without destroying the Hls instance first
- if (this.mediaSrc === _objectUrl) {
- media.removeAttribute('src');
- if (this.appendSource) {
- removeSourceChildren(media);
- }
- media.load();
- } else {
- this.warn('media|source.src was changed by a third party - skip cleanup');
- }
- }
- this.mediaSource = null;
- this.media = null;
- this._objectUrl = null;
- this.bufferCodecEventsExpected = this._bufferCodecEventsTotal;
- this.pendingTracks = {};
- this.tracks = {};
- }
- this.hls.trigger(Events.MEDIA_DETACHED, undefined);
- };
- _proto.onBufferReset = function onBufferReset() {
- var _this2 = this;
- this.getSourceBufferTypes().forEach(function (type) {
- _this2.resetBuffer(type);
- });
- this._initSourceBuffer();
- };
- _proto.resetBuffer = function resetBuffer(type) {
- var sb = this.sourceBuffer[type];
- try {
- if (sb) {
- var _this$mediaSource;
- this.removeBufferListeners(type);
- // Synchronously remove the SB from the map before the next call in order to prevent an async function from
- // accessing it
- this.sourceBuffer[type] = undefined;
- if ((_this$mediaSource = this.mediaSource) != null && _this$mediaSource.sourceBuffers.length) {
- this.mediaSource.removeSourceBuffer(sb);
- }
- }
- } catch (err) {
- this.warn("onBufferReset " + type, err);
- }
- };
- _proto.onBufferCodecs = function onBufferCodecs(event, data) {
- var _this3 = this;
- var sourceBufferCount = this.getSourceBufferTypes().length;
- var trackNames = Object.keys(data);
- trackNames.forEach(function (trackName) {
- if (sourceBufferCount) {
- // check if SourceBuffer codec needs to change
- var track = _this3.tracks[trackName];
- if (track && typeof track.buffer.changeType === 'function') {
- var _trackCodec;
- var _data$trackName = data[trackName],
- id = _data$trackName.id,
- codec = _data$trackName.codec,
- levelCodec = _data$trackName.levelCodec,
- container = _data$trackName.container,
- metadata = _data$trackName.metadata;
- var currentCodecFull = pickMostCompleteCodecName(track.codec, track.levelCodec);
- var currentCodec = currentCodecFull == null ? void 0 : currentCodecFull.replace(VIDEO_CODEC_PROFILE_REPLACE, '$1');
- var trackCodec = pickMostCompleteCodecName(codec, levelCodec);
- var nextCodec = (_trackCodec = trackCodec) == null ? void 0 : _trackCodec.replace(VIDEO_CODEC_PROFILE_REPLACE, '$1');
- if (trackCodec && currentCodec !== nextCodec) {
- if (trackName.slice(0, 5) === 'audio') {
- trackCodec = getCodecCompatibleName(trackCodec, _this3.appendSource);
- }
- var mimeType = container + ";codecs=" + trackCodec;
- _this3.appendChangeType(trackName, mimeType);
- _this3.log("switching codec " + currentCodecFull + " to " + trackCodec);
- _this3.tracks[trackName] = {
- buffer: track.buffer,
- codec: codec,
- container: container,
- levelCodec: levelCodec,
- metadata: metadata,
- id: id
- };
- }
- }
- } else {
- // if source buffer(s) not created yet, appended buffer tracks in this.pendingTracks
- _this3.pendingTracks[trackName] = data[trackName];
- }
- });
-
- // if sourcebuffers already created, do nothing ...
- if (sourceBufferCount) {
- return;
- }
- var bufferCodecEventsExpected = Math.max(this.bufferCodecEventsExpected - 1, 0);
- if (this.bufferCodecEventsExpected !== bufferCodecEventsExpected) {
- this.log(bufferCodecEventsExpected + " bufferCodec event(s) expected " + trackNames.join(','));
- this.bufferCodecEventsExpected = bufferCodecEventsExpected;
- }
- if (this.mediaSource && this.mediaSource.readyState === 'open') {
- this.checkPendingTracks();
- }
- };
- _proto.appendChangeType = function appendChangeType(type, mimeType) {
- var _this4 = this;
- var operationQueue = this.operationQueue;
- var operation = {
- execute: function execute() {
- var sb = _this4.sourceBuffer[type];
- if (sb) {
- _this4.log("changing " + type + " sourceBuffer type to " + mimeType);
- sb.changeType(mimeType);
- }
- operationQueue.shiftAndExecuteNext(type);
- },
- onStart: function onStart() {},
- onComplete: function onComplete() {},
- onError: function onError(error) {
- _this4.warn("Failed to change " + type + " SourceBuffer type", error);
- }
- };
- operationQueue.append(operation, type, !!this.pendingTracks[type]);
- };
- _proto.onBufferAppending = function onBufferAppending(event, eventData) {
- var _this5 = this;
- var hls = this.hls,
- operationQueue = this.operationQueue,
- tracks = this.tracks;
- var data = eventData.data,
- type = eventData.type,
- frag = eventData.frag,
- part = eventData.part,
- chunkMeta = eventData.chunkMeta;
- var chunkStats = chunkMeta.buffering[type];
- var bufferAppendingStart = self.performance.now();
- chunkStats.start = bufferAppendingStart;
- var fragBuffering = frag.stats.buffering;
- var partBuffering = part ? part.stats.buffering : null;
- if (fragBuffering.start === 0) {
- fragBuffering.start = bufferAppendingStart;
- }
- if (partBuffering && partBuffering.start === 0) {
- partBuffering.start = bufferAppendingStart;
- }
-
- // TODO: Only update timestampOffset when audio/mpeg fragment or part is not contiguous with previously appended
- // Adjusting `SourceBuffer.timestampOffset` (desired point in the timeline where the next frames should be appended)
- // in Chrome browser when we detect MPEG audio container and time delta between level PTS and `SourceBuffer.timestampOffset`
- // is greater than 100ms (this is enough to handle seek for VOD or level change for LIVE videos).
- // More info here: https://github.com/video-dev/hls.js/issues/332#issuecomment-257986486
- var audioTrack = tracks.audio;
- var checkTimestampOffset = false;
- if (type === 'audio' && (audioTrack == null ? void 0 : audioTrack.container) === 'audio/mpeg') {
- checkTimestampOffset = !this.lastMpegAudioChunk || chunkMeta.id === 1 || this.lastMpegAudioChunk.sn !== chunkMeta.sn;
- this.lastMpegAudioChunk = chunkMeta;
- }
- var fragStart = frag.start;
- var operation = {
- execute: function execute() {
- chunkStats.executeStart = self.performance.now();
- if (checkTimestampOffset) {
- var sb = _this5.sourceBuffer[type];
- if (sb) {
- var delta = fragStart - sb.timestampOffset;
- if (Math.abs(delta) >= 0.1) {
- _this5.log("Updating audio SourceBuffer timestampOffset to " + fragStart + " (delta: " + delta + ") sn: " + frag.sn + ")");
- sb.timestampOffset = fragStart;
- }
- }
- }
- _this5.appendExecutor(data, type);
- },
- onStart: function onStart() {
- // logger.debug(`[buffer-controller]: ${type} SourceBuffer updatestart`);
- },
- onComplete: function onComplete() {
- // logger.debug(`[buffer-controller]: ${type} SourceBuffer updateend`);
- var end = self.performance.now();
- chunkStats.executeEnd = chunkStats.end = end;
- if (fragBuffering.first === 0) {
- fragBuffering.first = end;
- }
- if (partBuffering && partBuffering.first === 0) {
- partBuffering.first = end;
- }
- var sourceBuffer = _this5.sourceBuffer;
- var timeRanges = {};
- for (var _type in sourceBuffer) {
- timeRanges[_type] = BufferHelper.getBuffered(sourceBuffer[_type]);
- }
- _this5.appendErrors[type] = 0;
- if (type === 'audio' || type === 'video') {
- _this5.appendErrors.audiovideo = 0;
- } else {
- _this5.appendErrors.audio = 0;
- _this5.appendErrors.video = 0;
- }
- _this5.hls.trigger(Events.BUFFER_APPENDED, {
- type: type,
- frag: frag,
- part: part,
- chunkMeta: chunkMeta,
- parent: frag.type,
- timeRanges: timeRanges
- });
- },
- onError: function onError(error) {
- // in case any error occured while appending, put back segment in segments table
- var event = {
- type: ErrorTypes.MEDIA_ERROR,
- parent: frag.type,
- details: ErrorDetails.BUFFER_APPEND_ERROR,
- sourceBufferName: type,
- frag: frag,
- part: part,
- chunkMeta: chunkMeta,
- error: error,
- err: error,
- fatal: false
- };
- if (error.code === DOMException.QUOTA_EXCEEDED_ERR) {
- // QuotaExceededError: http://www.w3.org/TR/html5/infrastructure.html#quotaexceedederror
- // let's stop appending any segments, and report BUFFER_FULL_ERROR error
- event.details = ErrorDetails.BUFFER_FULL_ERROR;
- } else {
- var appendErrorCount = ++_this5.appendErrors[type];
- event.details = ErrorDetails.BUFFER_APPEND_ERROR;
- /* with UHD content, we could get loop of quota exceeded error until
- browser is able to evict some data from sourcebuffer. Retrying can help recover.
- */
- _this5.warn("Failed " + appendErrorCount + "/" + hls.config.appendErrorMaxRetry + " times to append segment in \"" + type + "\" sourceBuffer");
- if (appendErrorCount >= hls.config.appendErrorMaxRetry) {
- event.fatal = true;
- }
- }
- hls.trigger(Events.ERROR, event);
- }
- };
- operationQueue.append(operation, type, !!this.pendingTracks[type]);
- };
- _proto.onBufferFlushing = function onBufferFlushing(event, data) {
- var _this6 = this;
- var operationQueue = this.operationQueue;
- var flushOperation = function flushOperation(type) {
- return {
- execute: _this6.removeExecutor.bind(_this6, type, data.startOffset, data.endOffset),
- onStart: function onStart() {
- // logger.debug(`[buffer-controller]: Started flushing ${data.startOffset} -> ${data.endOffset} for ${type} Source Buffer`);
- },
- onComplete: function onComplete() {
- // logger.debug(`[buffer-controller]: Finished flushing ${data.startOffset} -> ${data.endOffset} for ${type} Source Buffer`);
- _this6.hls.trigger(Events.BUFFER_FLUSHED, {
- type: type
- });
- },
- onError: function onError(error) {
- _this6.warn("Failed to remove from " + type + " SourceBuffer", error);
- }
- };
- };
- if (data.type) {
- operationQueue.append(flushOperation(data.type), data.type);
- } else {
- this.getSourceBufferTypes().forEach(function (type) {
- operationQueue.append(flushOperation(type), type);
- });
- }
- };
- _proto.onFragParsed = function onFragParsed(event, data) {
- var _this7 = this;
- var frag = data.frag,
- part = data.part;
- var buffersAppendedTo = [];
- var elementaryStreams = part ? part.elementaryStreams : frag.elementaryStreams;
- if (elementaryStreams[ElementaryStreamTypes.AUDIOVIDEO]) {
- buffersAppendedTo.push('audiovideo');
- } else {
- if (elementaryStreams[ElementaryStreamTypes.AUDIO]) {
- buffersAppendedTo.push('audio');
- }
- if (elementaryStreams[ElementaryStreamTypes.VIDEO]) {
- buffersAppendedTo.push('video');
- }
- }
- var onUnblocked = function onUnblocked() {
- var now = self.performance.now();
- frag.stats.buffering.end = now;
- if (part) {
- part.stats.buffering.end = now;
- }
- var stats = part ? part.stats : frag.stats;
- _this7.hls.trigger(Events.FRAG_BUFFERED, {
- frag: frag,
- part: part,
- stats: stats,
- id: frag.type
- });
- };
- if (buffersAppendedTo.length === 0) {
- this.warn("Fragments must have at least one ElementaryStreamType set. type: " + frag.type + " level: " + frag.level + " sn: " + frag.sn);
- }
- this.blockBuffers(onUnblocked, buffersAppendedTo);
- };
- _proto.onFragChanged = function onFragChanged(event, data) {
- this.trimBuffers();
- }
-
- // on BUFFER_EOS mark matching sourcebuffer(s) as ended and trigger checkEos()
- // an undefined data.type will mark all buffers as EOS.
- ;
- _proto.onBufferEos = function onBufferEos(event, data) {
- var _this8 = this;
- var ended = this.getSourceBufferTypes().reduce(function (acc, type) {
- var sb = _this8.sourceBuffer[type];
- if (sb && (!data.type || data.type === type)) {
- sb.ending = true;
- if (!sb.ended) {
- sb.ended = true;
- _this8.log(type + " sourceBuffer now EOS");
- }
- }
- return acc && !!(!sb || sb.ended);
- }, true);
- if (ended) {
- this.log("Queueing mediaSource.endOfStream()");
- this.blockBuffers(function () {
- _this8.getSourceBufferTypes().forEach(function (type) {
- var sb = _this8.sourceBuffer[type];
- if (sb) {
- sb.ending = false;
- }
- });
- var mediaSource = _this8.mediaSource;
- if (!mediaSource || mediaSource.readyState !== 'open') {
- if (mediaSource) {
- _this8.log("Could not call mediaSource.endOfStream(). mediaSource.readyState: " + mediaSource.readyState);
- }
- return;
- }
- _this8.log("Calling mediaSource.endOfStream()");
- // Allow this to throw and be caught by the enqueueing function
- mediaSource.endOfStream();
- });
- }
- };
- _proto.onLevelUpdated = function onLevelUpdated(event, _ref) {
- var details = _ref.details;
- if (!details.fragments.length) {
- return;
- }
- this.details = details;
- if (this.getSourceBufferTypes().length) {
- this.blockBuffers(this.updateMediaElementDuration.bind(this));
- } else {
- this.updateMediaElementDuration();
- }
- };
- _proto.trimBuffers = function trimBuffers() {
- var hls = this.hls,
- details = this.details,
- media = this.media;
- if (!media || details === null) {
- return;
- }
- var sourceBufferTypes = this.getSourceBufferTypes();
- if (!sourceBufferTypes.length) {
- return;
- }
- var config = hls.config;
- var currentTime = media.currentTime;
- var targetDuration = details.levelTargetDuration;
-
- // Support for deprecated liveBackBufferLength
- var backBufferLength = details.live && config.liveBackBufferLength !== null ? config.liveBackBufferLength : config.backBufferLength;
- if (isFiniteNumber(backBufferLength) && backBufferLength > 0) {
- var maxBackBufferLength = Math.max(backBufferLength, targetDuration);
- var targetBackBufferPosition = Math.floor(currentTime / targetDuration) * targetDuration - maxBackBufferLength;
- this.flushBackBuffer(currentTime, targetDuration, targetBackBufferPosition);
- }
- if (isFiniteNumber(config.frontBufferFlushThreshold) && config.frontBufferFlushThreshold > 0) {
- var frontBufferLength = Math.max(config.maxBufferLength, config.frontBufferFlushThreshold);
- var maxFrontBufferLength = Math.max(frontBufferLength, targetDuration);
- var targetFrontBufferPosition = Math.floor(currentTime / targetDuration) * targetDuration + maxFrontBufferLength;
- this.flushFrontBuffer(currentTime, targetDuration, targetFrontBufferPosition);
- }
- };
- _proto.flushBackBuffer = function flushBackBuffer(currentTime, targetDuration, targetBackBufferPosition) {
- var _this9 = this;
- var details = this.details,
- sourceBuffer = this.sourceBuffer;
- var sourceBufferTypes = this.getSourceBufferTypes();
- sourceBufferTypes.forEach(function (type) {
- var sb = sourceBuffer[type];
- if (sb) {
- var buffered = BufferHelper.getBuffered(sb);
- // when target buffer start exceeds actual buffer start
- if (buffered.length > 0 && targetBackBufferPosition > buffered.start(0)) {
- _this9.hls.trigger(Events.BACK_BUFFER_REACHED, {
- bufferEnd: targetBackBufferPosition
- });
-
- // Support for deprecated event:
- if (details != null && details.live) {
- _this9.hls.trigger(Events.LIVE_BACK_BUFFER_REACHED, {
- bufferEnd: targetBackBufferPosition
- });
- } else if (sb.ended && buffered.end(buffered.length - 1) - currentTime < targetDuration * 2) {
- _this9.log("Cannot flush " + type + " back buffer while SourceBuffer is in ended state");
- return;
- }
- _this9.hls.trigger(Events.BUFFER_FLUSHING, {
- startOffset: 0,
- endOffset: targetBackBufferPosition,
- type: type
- });
- }
- }
- });
- };
- _proto.flushFrontBuffer = function flushFrontBuffer(currentTime, targetDuration, targetFrontBufferPosition) {
- var _this10 = this;
- var sourceBuffer = this.sourceBuffer;
- var sourceBufferTypes = this.getSourceBufferTypes();
- sourceBufferTypes.forEach(function (type) {
- var sb = sourceBuffer[type];
- if (sb) {
- var buffered = BufferHelper.getBuffered(sb);
- var numBufferedRanges = buffered.length;
- // The buffer is either empty or contiguous
- if (numBufferedRanges < 2) {
- return;
- }
- var bufferStart = buffered.start(numBufferedRanges - 1);
- var bufferEnd = buffered.end(numBufferedRanges - 1);
- // No flush if we can tolerate the current buffer length or the current buffer range we would flush is contiguous with current position
- if (targetFrontBufferPosition > bufferStart || currentTime >= bufferStart && currentTime <= bufferEnd) {
- return;
- } else if (sb.ended && currentTime - bufferEnd < 2 * targetDuration) {
- _this10.log("Cannot flush " + type + " front buffer while SourceBuffer is in ended state");
- return;
- }
- _this10.hls.trigger(Events.BUFFER_FLUSHING, {
- startOffset: bufferStart,
- endOffset: Infinity,
- type: type
- });
- }
- });
- }
-
- /**
- * Update Media Source duration to current level duration or override to Infinity if configuration parameter
- * 'liveDurationInfinity` is set to `true`
- * More details: https://github.com/video-dev/hls.js/issues/355
- */;
- _proto.updateMediaElementDuration = function updateMediaElementDuration() {
- if (!this.details || !this.media || !this.mediaSource || this.mediaSource.readyState !== 'open') {
- return;
- }
- var details = this.details,
- hls = this.hls,
- media = this.media,
- mediaSource = this.mediaSource;
- var levelDuration = details.fragments[0].start + details.totalduration;
- var mediaDuration = media.duration;
- var msDuration = isFiniteNumber(mediaSource.duration) ? mediaSource.duration : 0;
- if (details.live && hls.config.liveDurationInfinity) {
- // Override duration to Infinity
- mediaSource.duration = Infinity;
- this.updateSeekableRange(details);
- } else if (levelDuration > msDuration && levelDuration > mediaDuration || !isFiniteNumber(mediaDuration)) {
- // levelDuration was the last value we set.
- // not using mediaSource.duration as the browser may tweak this value
- // only update Media Source duration if its value increase, this is to avoid
- // flushing already buffered portion when switching between quality level
- this.log("Updating Media Source duration to " + levelDuration.toFixed(3));
- mediaSource.duration = levelDuration;
- }
- };
- _proto.updateSeekableRange = function updateSeekableRange(levelDetails) {
- var mediaSource = this.mediaSource;
- var fragments = levelDetails.fragments;
- var len = fragments.length;
- if (len && levelDetails.live && mediaSource != null && mediaSource.setLiveSeekableRange) {
- var start = Math.max(0, fragments[0].start);
- var end = Math.max(start, start + levelDetails.totalduration);
- this.log("Media Source duration is set to " + mediaSource.duration + ". Setting seekable range to " + start + "-" + end + ".");
- mediaSource.setLiveSeekableRange(start, end);
- }
- };
- _proto.checkPendingTracks = function checkPendingTracks() {
- var bufferCodecEventsExpected = this.bufferCodecEventsExpected,
- operationQueue = this.operationQueue,
- pendingTracks = this.pendingTracks;
-
- // Check if we've received all of the expected bufferCodec events. When none remain, create all the sourceBuffers at once.
- // This is important because the MSE spec allows implementations to throw QuotaExceededErrors if creating new sourceBuffers after
- // data has been appended to existing ones.
- // 2 tracks is the max (one for audio, one for video). If we've reach this max go ahead and create the buffers.
- var pendingTracksCount = Object.keys(pendingTracks).length;
- if (pendingTracksCount && (!bufferCodecEventsExpected || pendingTracksCount === 2 || 'audiovideo' in pendingTracks)) {
- // ok, let's create them now !
- this.createSourceBuffers(pendingTracks);
- this.pendingTracks = {};
- // append any pending segments now !
- var buffers = this.getSourceBufferTypes();
- if (buffers.length) {
- this.hls.trigger(Events.BUFFER_CREATED, {
- tracks: this.tracks
- });
- buffers.forEach(function (type) {
- operationQueue.executeNext(type);
- });
- } else {
- var error = new Error('could not create source buffer for media codec(s)');
- this.hls.trigger(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.BUFFER_INCOMPATIBLE_CODECS_ERROR,
- fatal: true,
- error: error,
- reason: error.message
- });
- }
- }
- };
- _proto.createSourceBuffers = function createSourceBuffers(tracks) {
- var _this11 = this;
- var sourceBuffer = this.sourceBuffer,
- mediaSource = this.mediaSource;
- if (!mediaSource) {
- throw Error('createSourceBuffers called when mediaSource was null');
- }
- var _loop = function _loop(trackName) {
- if (!sourceBuffer[trackName]) {
- var _track$levelCodec;
- var track = tracks[trackName];
- if (!track) {
- throw Error("source buffer exists for track " + trackName + ", however track does not");
- }
- // use levelCodec as first priority unless it contains multiple comma-separated codec values
- var codec = ((_track$levelCodec = track.levelCodec) == null ? void 0 : _track$levelCodec.indexOf(',')) === -1 ? track.levelCodec : track.codec;
- if (codec) {
- if (trackName.slice(0, 5) === 'audio') {
- codec = getCodecCompatibleName(codec, _this11.appendSource);
- }
- }
- var mimeType = track.container + ";codecs=" + codec;
- _this11.log("creating sourceBuffer(" + mimeType + ")");
- try {
- var sb = sourceBuffer[trackName] = mediaSource.addSourceBuffer(mimeType);
- var sbName = trackName;
- _this11.addBufferListener(sbName, 'updatestart', _this11._onSBUpdateStart);
- _this11.addBufferListener(sbName, 'updateend', _this11._onSBUpdateEnd);
- _this11.addBufferListener(sbName, 'error', _this11._onSBUpdateError);
- // ManagedSourceBuffer bufferedchange event
- if (_this11.appendSource) {
- _this11.addBufferListener(sbName, 'bufferedchange', function (type, event) {
- // If media was ejected check for a change. Added ranges are redundant with changes on 'updateend' event.
- var removedRanges = event.removedRanges;
- if (removedRanges != null && removedRanges.length) {
- _this11.hls.trigger(Events.BUFFER_FLUSHED, {
- type: trackName
- });
- }
- });
- }
- _this11.tracks[trackName] = {
- buffer: sb,
- codec: codec,
- container: track.container,
- levelCodec: track.levelCodec,
- metadata: track.metadata,
- id: track.id
- };
- } catch (err) {
- _this11.error("error while trying to add sourceBuffer: " + err.message);
- _this11.hls.trigger(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.BUFFER_ADD_CODEC_ERROR,
- fatal: false,
- error: err,
- sourceBufferName: trackName,
- mimeType: mimeType
- });
- }
- }
- };
- for (var trackName in tracks) {
- _loop(trackName);
- }
- };
- _proto._onSBUpdateStart = function _onSBUpdateStart(type) {
- var operationQueue = this.operationQueue;
- var operation = operationQueue.current(type);
- operation.onStart();
- };
- _proto._onSBUpdateEnd = function _onSBUpdateEnd(type) {
- var _this$mediaSource2;
- if (((_this$mediaSource2 = this.mediaSource) == null ? void 0 : _this$mediaSource2.readyState) === 'closed') {
- this.resetBuffer(type);
- return;
- }
- var operationQueue = this.operationQueue;
- var operation = operationQueue.current(type);
- operation.onComplete();
- operationQueue.shiftAndExecuteNext(type);
- };
- _proto._onSBUpdateError = function _onSBUpdateError(type, event) {
- var _this$mediaSource3;
- var error = new Error(type + " SourceBuffer error. MediaSource readyState: " + ((_this$mediaSource3 = this.mediaSource) == null ? void 0 : _this$mediaSource3.readyState));
- this.error("" + error, event);
- // according to http://www.w3.org/TR/media-source/#sourcebuffer-append-error
- // SourceBuffer errors are not necessarily fatal; if so, the HTMLMediaElement will fire an error event
- this.hls.trigger(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.BUFFER_APPENDING_ERROR,
- sourceBufferName: type,
- error: error,
- fatal: false
- });
- // updateend is always fired after error, so we'll allow that to shift the current operation off of the queue
- var operation = this.operationQueue.current(type);
- if (operation) {
- operation.onError(error);
- }
- }
-
- // This method must result in an updateend event; if remove is not called, _onSBUpdateEnd must be called manually
- ;
- _proto.removeExecutor = function removeExecutor(type, startOffset, endOffset) {
- var media = this.media,
- mediaSource = this.mediaSource,
- operationQueue = this.operationQueue,
- sourceBuffer = this.sourceBuffer;
- var sb = sourceBuffer[type];
- if (!media || !mediaSource || !sb) {
- this.warn("Attempting to remove from the " + type + " SourceBuffer, but it does not exist");
- operationQueue.shiftAndExecuteNext(type);
- return;
- }
- var mediaDuration = isFiniteNumber(media.duration) ? media.duration : Infinity;
- var msDuration = isFiniteNumber(mediaSource.duration) ? mediaSource.duration : Infinity;
- var removeStart = Math.max(0, startOffset);
- var removeEnd = Math.min(endOffset, mediaDuration, msDuration);
- if (removeEnd > removeStart && (!sb.ending || sb.ended)) {
- sb.ended = false;
- this.log("Removing [" + removeStart + "," + removeEnd + "] from the " + type + " SourceBuffer");
- sb.remove(removeStart, removeEnd);
- } else {
- // Cycle the queue
- operationQueue.shiftAndExecuteNext(type);
- }
- }
-
- // This method must result in an updateend event; if append is not called, _onSBUpdateEnd must be called manually
- ;
- _proto.appendExecutor = function appendExecutor(data, type) {
- var sb = this.sourceBuffer[type];
- if (!sb) {
- if (!this.pendingTracks[type]) {
- throw new Error("Attempting to append to the " + type + " SourceBuffer, but it does not exist");
- }
- return;
- }
- sb.ended = false;
- sb.appendBuffer(data);
- }
-
- // Enqueues an operation to each SourceBuffer queue which, upon execution, resolves a promise. When all promises
- // resolve, the onUnblocked function is executed. Functions calling this method do not need to unblock the queue
- // upon completion, since we already do it here
- ;
- _proto.blockBuffers = function blockBuffers(onUnblocked, buffers) {
- var _this12 = this;
- if (buffers === void 0) {
- buffers = this.getSourceBufferTypes();
- }
- if (!buffers.length) {
- this.log('Blocking operation requested, but no SourceBuffers exist');
- Promise.resolve().then(onUnblocked);
- return;
- }
- var operationQueue = this.operationQueue;
-
- // logger.debug(`[buffer-controller]: Blocking ${buffers} SourceBuffer`);
- var blockingOperations = buffers.map(function (type) {
- return operationQueue.appendBlocker(type);
- });
- Promise.all(blockingOperations).then(function () {
- // logger.debug(`[buffer-controller]: Blocking operation resolved; unblocking ${buffers} SourceBuffer`);
- onUnblocked();
- buffers.forEach(function (type) {
- var sb = _this12.sourceBuffer[type];
- // Only cycle the queue if the SB is not updating. There's a bug in Chrome which sets the SB updating flag to
- // true when changing the MediaSource duration (https://bugs.chromium.org/p/chromium/issues/detail?id=959359&can=2&q=mediasource%20duration)
- // While this is a workaround, it's probably useful to have around
- if (!(sb != null && sb.updating)) {
- operationQueue.shiftAndExecuteNext(type);
- }
- });
- });
- };
- _proto.getSourceBufferTypes = function getSourceBufferTypes() {
- return Object.keys(this.sourceBuffer);
- };
- _proto.addBufferListener = function addBufferListener(type, event, fn) {
- var buffer = this.sourceBuffer[type];
- if (!buffer) {
- return;
- }
- var listener = fn.bind(this, type);
- this.listeners[type].push({
- event: event,
- listener: listener
- });
- buffer.addEventListener(event, listener);
- };
- _proto.removeBufferListeners = function removeBufferListeners(type) {
- var buffer = this.sourceBuffer[type];
- if (!buffer) {
- return;
- }
- this.listeners[type].forEach(function (l) {
- buffer.removeEventListener(l.event, l.listener);
- });
- };
- _createClass(BufferController, [{
- key: "mediaSrc",
- get: function get() {
- var _this$media, _this$media$querySele;
- var media = ((_this$media = this.media) == null ? void 0 : (_this$media$querySele = _this$media.querySelector) == null ? void 0 : _this$media$querySele.call(_this$media, 'source')) || this.media;
- return media == null ? void 0 : media.src;
- }
- }]);
- return BufferController;
- }();
- function removeSourceChildren(node) {
- var sourceChildren = node.querySelectorAll('source');
- [].slice.call(sourceChildren).forEach(function (source) {
- node.removeChild(source);
- });
- }
- function addSource(media, url) {
- var source = self.document.createElement('source');
- source.type = 'video/mp4';
- source.src = url;
- media.appendChild(source);
- }
-
- /**
- *
- * This code was ported from the dash.js project at:
- * https://github.com/Dash-Industry-Forum/dash.js/blob/development/externals/cea608-parser.js
- * https://github.com/Dash-Industry-Forum/dash.js/commit/8269b26a761e0853bb21d78780ed945144ecdd4d#diff-71bc295a2d6b6b7093a1d3290d53a4b2
- *
- * The original copyright appears below:
- *
- * The copyright in this software is being made available under the BSD License,
- * included below. This software may be subject to other third party and contributor
- * rights, including patent rights, and no such rights are granted under this license.
- *
- * Copyright (c) 2015-2016, DASH Industry Forum.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- * 1. Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation and/or
- * other materials provided with the distribution.
- * 2. Neither the name of Dash Industry Forum nor the names of its
- * contributors may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
- /**
- * Exceptions from regular ASCII. CodePoints are mapped to UTF-16 codes
- */
-
- var specialCea608CharsCodes = {
- 0x2a: 0xe1,
- // lowercase a, acute accent
- 0x5c: 0xe9,
- // lowercase e, acute accent
- 0x5e: 0xed,
- // lowercase i, acute accent
- 0x5f: 0xf3,
- // lowercase o, acute accent
- 0x60: 0xfa,
- // lowercase u, acute accent
- 0x7b: 0xe7,
- // lowercase c with cedilla
- 0x7c: 0xf7,
- // division symbol
- 0x7d: 0xd1,
- // uppercase N tilde
- 0x7e: 0xf1,
- // lowercase n tilde
- 0x7f: 0x2588,
- // Full block
- // THIS BLOCK INCLUDES THE 16 EXTENDED (TWO-BYTE) LINE 21 CHARACTERS
- // THAT COME FROM HI BYTE=0x11 AND LOW BETWEEN 0x30 AND 0x3F
- // THIS MEANS THAT \x50 MUST BE ADDED TO THE VALUES
- 0x80: 0xae,
- // Registered symbol (R)
- 0x81: 0xb0,
- // degree sign
- 0x82: 0xbd,
- // 1/2 symbol
- 0x83: 0xbf,
- // Inverted (open) question mark
- 0x84: 0x2122,
- // Trademark symbol (TM)
- 0x85: 0xa2,
- // Cents symbol
- 0x86: 0xa3,
- // Pounds sterling
- 0x87: 0x266a,
- // Music 8'th note
- 0x88: 0xe0,
- // lowercase a, grave accent
- 0x89: 0x20,
- // transparent space (regular)
- 0x8a: 0xe8,
- // lowercase e, grave accent
- 0x8b: 0xe2,
- // lowercase a, circumflex accent
- 0x8c: 0xea,
- // lowercase e, circumflex accent
- 0x8d: 0xee,
- // lowercase i, circumflex accent
- 0x8e: 0xf4,
- // lowercase o, circumflex accent
- 0x8f: 0xfb,
- // lowercase u, circumflex accent
- // THIS BLOCK INCLUDES THE 32 EXTENDED (TWO-BYTE) LINE 21 CHARACTERS
- // THAT COME FROM HI BYTE=0x12 AND LOW BETWEEN 0x20 AND 0x3F
- 0x90: 0xc1,
- // capital letter A with acute
- 0x91: 0xc9,
- // capital letter E with acute
- 0x92: 0xd3,
- // capital letter O with acute
- 0x93: 0xda,
- // capital letter U with acute
- 0x94: 0xdc,
- // capital letter U with diaresis
- 0x95: 0xfc,
- // lowercase letter U with diaeresis
- 0x96: 0x2018,
- // opening single quote
- 0x97: 0xa1,
- // inverted exclamation mark
- 0x98: 0x2a,
- // asterisk
- 0x99: 0x2019,
- // closing single quote
- 0x9a: 0x2501,
- // box drawings heavy horizontal
- 0x9b: 0xa9,
- // copyright sign
- 0x9c: 0x2120,
- // Service mark
- 0x9d: 0x2022,
- // (round) bullet
- 0x9e: 0x201c,
- // Left double quotation mark
- 0x9f: 0x201d,
- // Right double quotation mark
- 0xa0: 0xc0,
- // uppercase A, grave accent
- 0xa1: 0xc2,
- // uppercase A, circumflex
- 0xa2: 0xc7,
- // uppercase C with cedilla
- 0xa3: 0xc8,
- // uppercase E, grave accent
- 0xa4: 0xca,
- // uppercase E, circumflex
- 0xa5: 0xcb,
- // capital letter E with diaresis
- 0xa6: 0xeb,
- // lowercase letter e with diaresis
- 0xa7: 0xce,
- // uppercase I, circumflex
- 0xa8: 0xcf,
- // uppercase I, with diaresis
- 0xa9: 0xef,
- // lowercase i, with diaresis
- 0xaa: 0xd4,
- // uppercase O, circumflex
- 0xab: 0xd9,
- // uppercase U, grave accent
- 0xac: 0xf9,
- // lowercase u, grave accent
- 0xad: 0xdb,
- // uppercase U, circumflex
- 0xae: 0xab,
- // left-pointing double angle quotation mark
- 0xaf: 0xbb,
- // right-pointing double angle quotation mark
- // THIS BLOCK INCLUDES THE 32 EXTENDED (TWO-BYTE) LINE 21 CHARACTERS
- // THAT COME FROM HI BYTE=0x13 AND LOW BETWEEN 0x20 AND 0x3F
- 0xb0: 0xc3,
- // Uppercase A, tilde
- 0xb1: 0xe3,
- // Lowercase a, tilde
- 0xb2: 0xcd,
- // Uppercase I, acute accent
- 0xb3: 0xcc,
- // Uppercase I, grave accent
- 0xb4: 0xec,
- // Lowercase i, grave accent
- 0xb5: 0xd2,
- // Uppercase O, grave accent
- 0xb6: 0xf2,
- // Lowercase o, grave accent
- 0xb7: 0xd5,
- // Uppercase O, tilde
- 0xb8: 0xf5,
- // Lowercase o, tilde
- 0xb9: 0x7b,
- // Open curly brace
- 0xba: 0x7d,
- // Closing curly brace
- 0xbb: 0x5c,
- // Backslash
- 0xbc: 0x5e,
- // Caret
- 0xbd: 0x5f,
- // Underscore
- 0xbe: 0x7c,
- // Pipe (vertical line)
- 0xbf: 0x223c,
- // Tilde operator
- 0xc0: 0xc4,
- // Uppercase A, umlaut
- 0xc1: 0xe4,
- // Lowercase A, umlaut
- 0xc2: 0xd6,
- // Uppercase O, umlaut
- 0xc3: 0xf6,
- // Lowercase o, umlaut
- 0xc4: 0xdf,
- // Esszett (sharp S)
- 0xc5: 0xa5,
- // Yen symbol
- 0xc6: 0xa4,
- // Generic currency sign
- 0xc7: 0x2503,
- // Box drawings heavy vertical
- 0xc8: 0xc5,
- // Uppercase A, ring
- 0xc9: 0xe5,
- // Lowercase A, ring
- 0xca: 0xd8,
- // Uppercase O, stroke
- 0xcb: 0xf8,
- // Lowercase o, strok
- 0xcc: 0x250f,
- // Box drawings heavy down and right
- 0xcd: 0x2513,
- // Box drawings heavy down and left
- 0xce: 0x2517,
- // Box drawings heavy up and right
- 0xcf: 0x251b // Box drawings heavy up and left
- };
-
- /**
- * Utils
- */
- var getCharForByte = function getCharForByte(_byte) {
- return String.fromCharCode(specialCea608CharsCodes[_byte] || _byte);
- };
- var NR_ROWS = 15;
- var NR_COLS = 100;
- // Tables to look up row from PAC data
- var rowsLowCh1 = {
- 0x11: 1,
- 0x12: 3,
- 0x15: 5,
- 0x16: 7,
- 0x17: 9,
- 0x10: 11,
- 0x13: 12,
- 0x14: 14
- };
- var rowsHighCh1 = {
- 0x11: 2,
- 0x12: 4,
- 0x15: 6,
- 0x16: 8,
- 0x17: 10,
- 0x13: 13,
- 0x14: 15
- };
- var rowsLowCh2 = {
- 0x19: 1,
- 0x1a: 3,
- 0x1d: 5,
- 0x1e: 7,
- 0x1f: 9,
- 0x18: 11,
- 0x1b: 12,
- 0x1c: 14
- };
- var rowsHighCh2 = {
- 0x19: 2,
- 0x1a: 4,
- 0x1d: 6,
- 0x1e: 8,
- 0x1f: 10,
- 0x1b: 13,
- 0x1c: 15
- };
- var backgroundColors = ['white', 'green', 'blue', 'cyan', 'red', 'yellow', 'magenta', 'black', 'transparent'];
- var CaptionsLogger = /*#__PURE__*/function () {
- function CaptionsLogger() {
- this.time = null;
- this.verboseLevel = 0;
- }
- var _proto = CaptionsLogger.prototype;
- _proto.log = function log(severity, msg) {
- if (this.verboseLevel >= severity) {
- var m = typeof msg === 'function' ? msg() : msg;
- logger.log(this.time + " [" + severity + "] " + m);
- }
- };
- return CaptionsLogger;
- }();
- var numArrayToHexArray = function numArrayToHexArray(numArray) {
- var hexArray = [];
- for (var j = 0; j < numArray.length; j++) {
- hexArray.push(numArray[j].toString(16));
- }
- return hexArray;
- };
- var PenState = /*#__PURE__*/function () {
- function PenState() {
- this.foreground = 'white';
- this.underline = false;
- this.italics = false;
- this.background = 'black';
- this.flash = false;
- }
- var _proto2 = PenState.prototype;
- _proto2.reset = function reset() {
- this.foreground = 'white';
- this.underline = false;
- this.italics = false;
- this.background = 'black';
- this.flash = false;
- };
- _proto2.setStyles = function setStyles(styles) {
- var attribs = ['foreground', 'underline', 'italics', 'background', 'flash'];
- for (var i = 0; i < attribs.length; i++) {
- var style = attribs[i];
- if (styles.hasOwnProperty(style)) {
- this[style] = styles[style];
- }
- }
- };
- _proto2.isDefault = function isDefault() {
- return this.foreground === 'white' && !this.underline && !this.italics && this.background === 'black' && !this.flash;
- };
- _proto2.equals = function equals(other) {
- return this.foreground === other.foreground && this.underline === other.underline && this.italics === other.italics && this.background === other.background && this.flash === other.flash;
- };
- _proto2.copy = function copy(newPenState) {
- this.foreground = newPenState.foreground;
- this.underline = newPenState.underline;
- this.italics = newPenState.italics;
- this.background = newPenState.background;
- this.flash = newPenState.flash;
- };
- _proto2.toString = function toString() {
- return 'color=' + this.foreground + ', underline=' + this.underline + ', italics=' + this.italics + ', background=' + this.background + ', flash=' + this.flash;
- };
- return PenState;
- }();
- /**
- * Unicode character with styling and background.
- * @constructor
- */
- var StyledUnicodeChar = /*#__PURE__*/function () {
- function StyledUnicodeChar() {
- this.uchar = ' ';
- this.penState = new PenState();
- }
- var _proto3 = StyledUnicodeChar.prototype;
- _proto3.reset = function reset() {
- this.uchar = ' ';
- this.penState.reset();
- };
- _proto3.setChar = function setChar(uchar, newPenState) {
- this.uchar = uchar;
- this.penState.copy(newPenState);
- };
- _proto3.setPenState = function setPenState(newPenState) {
- this.penState.copy(newPenState);
- };
- _proto3.equals = function equals(other) {
- return this.uchar === other.uchar && this.penState.equals(other.penState);
- };
- _proto3.copy = function copy(newChar) {
- this.uchar = newChar.uchar;
- this.penState.copy(newChar.penState);
- };
- _proto3.isEmpty = function isEmpty() {
- return this.uchar === ' ' && this.penState.isDefault();
- };
- return StyledUnicodeChar;
- }();
- /**
- * CEA-608 row consisting of NR_COLS instances of StyledUnicodeChar.
- * @constructor
- */
- var Row = /*#__PURE__*/function () {
- function Row(logger) {
- this.chars = [];
- this.pos = 0;
- this.currPenState = new PenState();
- this.cueStartTime = null;
- this.logger = void 0;
- for (var i = 0; i < NR_COLS; i++) {
- this.chars.push(new StyledUnicodeChar());
- }
- this.logger = logger;
- }
- var _proto4 = Row.prototype;
- _proto4.equals = function equals(other) {
- for (var i = 0; i < NR_COLS; i++) {
- if (!this.chars[i].equals(other.chars[i])) {
- return false;
- }
- }
- return true;
- };
- _proto4.copy = function copy(other) {
- for (var i = 0; i < NR_COLS; i++) {
- this.chars[i].copy(other.chars[i]);
- }
- };
- _proto4.isEmpty = function isEmpty() {
- var empty = true;
- for (var i = 0; i < NR_COLS; i++) {
- if (!this.chars[i].isEmpty()) {
- empty = false;
- break;
- }
- }
- return empty;
- }
-
- /**
- * Set the cursor to a valid column.
- */;
- _proto4.setCursor = function setCursor(absPos) {
- if (this.pos !== absPos) {
- this.pos = absPos;
- }
- if (this.pos < 0) {
- this.logger.log(3, 'Negative cursor position ' + this.pos);
- this.pos = 0;
- } else if (this.pos > NR_COLS) {
- this.logger.log(3, 'Too large cursor position ' + this.pos);
- this.pos = NR_COLS;
- }
- }
-
- /**
- * Move the cursor relative to current position.
- */;
- _proto4.moveCursor = function moveCursor(relPos) {
- var newPos = this.pos + relPos;
- if (relPos > 1) {
- for (var i = this.pos + 1; i < newPos + 1; i++) {
- this.chars[i].setPenState(this.currPenState);
- }
- }
- this.setCursor(newPos);
- }
-
- /**
- * Backspace, move one step back and clear character.
- */;
- _proto4.backSpace = function backSpace() {
- this.moveCursor(-1);
- this.chars[this.pos].setChar(' ', this.currPenState);
- };
- _proto4.insertChar = function insertChar(_byte2) {
- var _this = this;
- if (_byte2 >= 0x90) {
- // Extended char
- this.backSpace();
- }
- var _char = getCharForByte(_byte2);
- if (this.pos >= NR_COLS) {
- this.logger.log(0, function () {
- return 'Cannot insert ' + _byte2.toString(16) + ' (' + _char + ') at position ' + _this.pos + '. Skipping it!';
- });
- return;
- }
- this.chars[this.pos].setChar(_char, this.currPenState);
- this.moveCursor(1);
- };
- _proto4.clearFromPos = function clearFromPos(startPos) {
- var i;
- for (i = startPos; i < NR_COLS; i++) {
- this.chars[i].reset();
- }
- };
- _proto4.clear = function clear() {
- this.clearFromPos(0);
- this.pos = 0;
- this.currPenState.reset();
- };
- _proto4.clearToEndOfRow = function clearToEndOfRow() {
- this.clearFromPos(this.pos);
- };
- _proto4.getTextString = function getTextString() {
- var chars = [];
- var empty = true;
- for (var i = 0; i < NR_COLS; i++) {
- var _char2 = this.chars[i].uchar;
- if (_char2 !== ' ') {
- empty = false;
- }
- chars.push(_char2);
- }
- if (empty) {
- return '';
- } else {
- return chars.join('');
- }
- };
- _proto4.setPenStyles = function setPenStyles(styles) {
- this.currPenState.setStyles(styles);
- var currChar = this.chars[this.pos];
- currChar.setPenState(this.currPenState);
- };
- return Row;
- }();
-
- /**
- * Keep a CEA-608 screen of 32x15 styled characters
- * @constructor
- */
- var CaptionScreen = /*#__PURE__*/function () {
- function CaptionScreen(logger) {
- this.rows = [];
- this.currRow = NR_ROWS - 1;
- this.nrRollUpRows = null;
- this.lastOutputScreen = null;
- this.logger = void 0;
- for (var i = 0; i < NR_ROWS; i++) {
- this.rows.push(new Row(logger));
- }
- this.logger = logger;
- }
- var _proto5 = CaptionScreen.prototype;
- _proto5.reset = function reset() {
- for (var i = 0; i < NR_ROWS; i++) {
- this.rows[i].clear();
- }
- this.currRow = NR_ROWS - 1;
- };
- _proto5.equals = function equals(other) {
- var equal = true;
- for (var i = 0; i < NR_ROWS; i++) {
- if (!this.rows[i].equals(other.rows[i])) {
- equal = false;
- break;
- }
- }
- return equal;
- };
- _proto5.copy = function copy(other) {
- for (var i = 0; i < NR_ROWS; i++) {
- this.rows[i].copy(other.rows[i]);
- }
- };
- _proto5.isEmpty = function isEmpty() {
- var empty = true;
- for (var i = 0; i < NR_ROWS; i++) {
- if (!this.rows[i].isEmpty()) {
- empty = false;
- break;
- }
- }
- return empty;
- };
- _proto5.backSpace = function backSpace() {
- var row = this.rows[this.currRow];
- row.backSpace();
- };
- _proto5.clearToEndOfRow = function clearToEndOfRow() {
- var row = this.rows[this.currRow];
- row.clearToEndOfRow();
- }
-
- /**
- * Insert a character (without styling) in the current row.
- */;
- _proto5.insertChar = function insertChar(_char3) {
- var row = this.rows[this.currRow];
- row.insertChar(_char3);
- };
- _proto5.setPen = function setPen(styles) {
- var row = this.rows[this.currRow];
- row.setPenStyles(styles);
- };
- _proto5.moveCursor = function moveCursor(relPos) {
- var row = this.rows[this.currRow];
- row.moveCursor(relPos);
- };
- _proto5.setCursor = function setCursor(absPos) {
- this.logger.log(2, 'setCursor: ' + absPos);
- var row = this.rows[this.currRow];
- row.setCursor(absPos);
- };
- _proto5.setPAC = function setPAC(pacData) {
- this.logger.log(2, function () {
- return 'pacData = ' + JSON.stringify(pacData);
- });
- var newRow = pacData.row - 1;
- if (this.nrRollUpRows && newRow < this.nrRollUpRows - 1) {
- newRow = this.nrRollUpRows - 1;
- }
-
- // Make sure this only affects Roll-up Captions by checking this.nrRollUpRows
- if (this.nrRollUpRows && this.currRow !== newRow) {
- // clear all rows first
- for (var i = 0; i < NR_ROWS; i++) {
- this.rows[i].clear();
- }
-
- // Copy this.nrRollUpRows rows from lastOutputScreen and place it in the newRow location
- // topRowIndex - the start of rows to copy (inclusive index)
- var topRowIndex = this.currRow + 1 - this.nrRollUpRows;
- // We only copy if the last position was already shown.
- // We use the cueStartTime value to check this.
- var lastOutputScreen = this.lastOutputScreen;
- if (lastOutputScreen) {
- var prevLineTime = lastOutputScreen.rows[topRowIndex].cueStartTime;
- var time = this.logger.time;
- if (prevLineTime !== null && time !== null && prevLineTime < time) {
- for (var _i = 0; _i < this.nrRollUpRows; _i++) {
- this.rows[newRow - this.nrRollUpRows + _i + 1].copy(lastOutputScreen.rows[topRowIndex + _i]);
- }
- }
- }
- }
- this.currRow = newRow;
- var row = this.rows[this.currRow];
- if (pacData.indent !== null) {
- var indent = pacData.indent;
- var prevPos = Math.max(indent - 1, 0);
- row.setCursor(pacData.indent);
- pacData.color = row.chars[prevPos].penState.foreground;
- }
- var styles = {
- foreground: pacData.color,
- underline: pacData.underline,
- italics: pacData.italics,
- background: 'black',
- flash: false
- };
- this.setPen(styles);
- }
-
- /**
- * Set background/extra foreground, but first do back_space, and then insert space (backwards compatibility).
- */;
- _proto5.setBkgData = function setBkgData(bkgData) {
- this.logger.log(2, function () {
- return 'bkgData = ' + JSON.stringify(bkgData);
- });
- this.backSpace();
- this.setPen(bkgData);
- this.insertChar(0x20); // Space
- };
- _proto5.setRollUpRows = function setRollUpRows(nrRows) {
- this.nrRollUpRows = nrRows;
- };
- _proto5.rollUp = function rollUp() {
- var _this2 = this;
- if (this.nrRollUpRows === null) {
- this.logger.log(3, 'roll_up but nrRollUpRows not set yet');
- return; // Not properly setup
- }
- this.logger.log(1, function () {
- return _this2.getDisplayText();
- });
- var topRowIndex = this.currRow + 1 - this.nrRollUpRows;
- var topRow = this.rows.splice(topRowIndex, 1)[0];
- topRow.clear();
- this.rows.splice(this.currRow, 0, topRow);
- this.logger.log(2, 'Rolling up');
- // this.logger.log(VerboseLevel.TEXT, this.get_display_text())
- }
-
- /**
- * Get all non-empty rows with as unicode text.
- */;
- _proto5.getDisplayText = function getDisplayText(asOneRow) {
- asOneRow = asOneRow || false;
- var displayText = [];
- var text = '';
- var rowNr = -1;
- for (var i = 0; i < NR_ROWS; i++) {
- var rowText = this.rows[i].getTextString();
- if (rowText) {
- rowNr = i + 1;
- if (asOneRow) {
- displayText.push('Row ' + rowNr + ": '" + rowText + "'");
- } else {
- displayText.push(rowText.trim());
- }
- }
- }
- if (displayText.length > 0) {
- if (asOneRow) {
- text = '[' + displayText.join(' | ') + ']';
- } else {
- text = displayText.join('\n');
- }
- }
- return text;
- };
- _proto5.getTextAndFormat = function getTextAndFormat() {
- return this.rows;
- };
- return CaptionScreen;
- }();
-
- // var modes = ['MODE_ROLL-UP', 'MODE_POP-ON', 'MODE_PAINT-ON', 'MODE_TEXT'];
- var Cea608Channel = /*#__PURE__*/function () {
- function Cea608Channel(channelNumber, outputFilter, logger) {
- this.chNr = void 0;
- this.outputFilter = void 0;
- this.mode = void 0;
- this.verbose = void 0;
- this.displayedMemory = void 0;
- this.nonDisplayedMemory = void 0;
- this.lastOutputScreen = void 0;
- this.currRollUpRow = void 0;
- this.writeScreen = void 0;
- this.cueStartTime = void 0;
- this.logger = void 0;
- this.chNr = channelNumber;
- this.outputFilter = outputFilter;
- this.mode = null;
- this.verbose = 0;
- this.displayedMemory = new CaptionScreen(logger);
- this.nonDisplayedMemory = new CaptionScreen(logger);
- this.lastOutputScreen = new CaptionScreen(logger);
- this.currRollUpRow = this.displayedMemory.rows[NR_ROWS - 1];
- this.writeScreen = this.displayedMemory;
- this.mode = null;
- this.cueStartTime = null; // Keeps track of where a cue started.
- this.logger = logger;
- }
- var _proto6 = Cea608Channel.prototype;
- _proto6.reset = function reset() {
- this.mode = null;
- this.displayedMemory.reset();
- this.nonDisplayedMemory.reset();
- this.lastOutputScreen.reset();
- this.outputFilter.reset();
- this.currRollUpRow = this.displayedMemory.rows[NR_ROWS - 1];
- this.writeScreen = this.displayedMemory;
- this.mode = null;
- this.cueStartTime = null;
- };
- _proto6.getHandler = function getHandler() {
- return this.outputFilter;
- };
- _proto6.setHandler = function setHandler(newHandler) {
- this.outputFilter = newHandler;
- };
- _proto6.setPAC = function setPAC(pacData) {
- this.writeScreen.setPAC(pacData);
- };
- _proto6.setBkgData = function setBkgData(bkgData) {
- this.writeScreen.setBkgData(bkgData);
- };
- _proto6.setMode = function setMode(newMode) {
- if (newMode === this.mode) {
- return;
- }
- this.mode = newMode;
- this.logger.log(2, function () {
- return 'MODE=' + newMode;
- });
- if (this.mode === 'MODE_POP-ON') {
- this.writeScreen = this.nonDisplayedMemory;
- } else {
- this.writeScreen = this.displayedMemory;
- this.writeScreen.reset();
- }
- if (this.mode !== 'MODE_ROLL-UP') {
- this.displayedMemory.nrRollUpRows = null;
- this.nonDisplayedMemory.nrRollUpRows = null;
- }
- this.mode = newMode;
- };
- _proto6.insertChars = function insertChars(chars) {
- var _this3 = this;
- for (var i = 0; i < chars.length; i++) {
- this.writeScreen.insertChar(chars[i]);
- }
- var screen = this.writeScreen === this.displayedMemory ? 'DISP' : 'NON_DISP';
- this.logger.log(2, function () {
- return screen + ': ' + _this3.writeScreen.getDisplayText(true);
- });
- if (this.mode === 'MODE_PAINT-ON' || this.mode === 'MODE_ROLL-UP') {
- this.logger.log(1, function () {
- return 'DISPLAYED: ' + _this3.displayedMemory.getDisplayText(true);
- });
- this.outputDataUpdate();
- }
- };
- _proto6.ccRCL = function ccRCL() {
- // Resume Caption Loading (switch mode to Pop On)
- this.logger.log(2, 'RCL - Resume Caption Loading');
- this.setMode('MODE_POP-ON');
- };
- _proto6.ccBS = function ccBS() {
- // BackSpace
- this.logger.log(2, 'BS - BackSpace');
- if (this.mode === 'MODE_TEXT') {
- return;
- }
- this.writeScreen.backSpace();
- if (this.writeScreen === this.displayedMemory) {
- this.outputDataUpdate();
- }
- };
- _proto6.ccAOF = function ccAOF() {
- // Reserved (formerly Alarm Off)
- };
- _proto6.ccAON = function ccAON() {
- // Reserved (formerly Alarm On)
- };
- _proto6.ccDER = function ccDER() {
- // Delete to End of Row
- this.logger.log(2, 'DER- Delete to End of Row');
- this.writeScreen.clearToEndOfRow();
- this.outputDataUpdate();
- };
- _proto6.ccRU = function ccRU(nrRows) {
- // Roll-Up Captions-2,3,or 4 Rows
- this.logger.log(2, 'RU(' + nrRows + ') - Roll Up');
- this.writeScreen = this.displayedMemory;
- this.setMode('MODE_ROLL-UP');
- this.writeScreen.setRollUpRows(nrRows);
- };
- _proto6.ccFON = function ccFON() {
- // Flash On
- this.logger.log(2, 'FON - Flash On');
- this.writeScreen.setPen({
- flash: true
- });
- };
- _proto6.ccRDC = function ccRDC() {
- // Resume Direct Captioning (switch mode to PaintOn)
- this.logger.log(2, 'RDC - Resume Direct Captioning');
- this.setMode('MODE_PAINT-ON');
- };
- _proto6.ccTR = function ccTR() {
- // Text Restart in text mode (not supported, however)
- this.logger.log(2, 'TR');
- this.setMode('MODE_TEXT');
- };
- _proto6.ccRTD = function ccRTD() {
- // Resume Text Display in Text mode (not supported, however)
- this.logger.log(2, 'RTD');
- this.setMode('MODE_TEXT');
- };
- _proto6.ccEDM = function ccEDM() {
- // Erase Displayed Memory
- this.logger.log(2, 'EDM - Erase Displayed Memory');
- this.displayedMemory.reset();
- this.outputDataUpdate(true);
- };
- _proto6.ccCR = function ccCR() {
- // Carriage Return
- this.logger.log(2, 'CR - Carriage Return');
- this.writeScreen.rollUp();
- this.outputDataUpdate(true);
- };
- _proto6.ccENM = function ccENM() {
- // Erase Non-Displayed Memory
- this.logger.log(2, 'ENM - Erase Non-displayed Memory');
- this.nonDisplayedMemory.reset();
- };
- _proto6.ccEOC = function ccEOC() {
- var _this4 = this;
- // End of Caption (Flip Memories)
- this.logger.log(2, 'EOC - End Of Caption');
- if (this.mode === 'MODE_POP-ON') {
- var tmp = this.displayedMemory;
- this.displayedMemory = this.nonDisplayedMemory;
- this.nonDisplayedMemory = tmp;
- this.writeScreen = this.nonDisplayedMemory;
- this.logger.log(1, function () {
- return 'DISP: ' + _this4.displayedMemory.getDisplayText();
- });
- }
- this.outputDataUpdate(true);
- };
- _proto6.ccTO = function ccTO(nrCols) {
- // Tab Offset 1,2, or 3 columns
- this.logger.log(2, 'TO(' + nrCols + ') - Tab Offset');
- this.writeScreen.moveCursor(nrCols);
- };
- _proto6.ccMIDROW = function ccMIDROW(secondByte) {
- // Parse MIDROW command
- var styles = {
- flash: false
- };
- styles.underline = secondByte % 2 === 1;
- styles.italics = secondByte >= 0x2e;
- if (!styles.italics) {
- var colorIndex = Math.floor(secondByte / 2) - 0x10;
- var colors = ['white', 'green', 'blue', 'cyan', 'red', 'yellow', 'magenta'];
- styles.foreground = colors[colorIndex];
- } else {
- styles.foreground = 'white';
- }
- this.logger.log(2, 'MIDROW: ' + JSON.stringify(styles));
- this.writeScreen.setPen(styles);
- };
- _proto6.outputDataUpdate = function outputDataUpdate(dispatch) {
- if (dispatch === void 0) {
- dispatch = false;
- }
- var time = this.logger.time;
- if (time === null) {
- return;
- }
- if (this.outputFilter) {
- if (this.cueStartTime === null && !this.displayedMemory.isEmpty()) {
- // Start of a new cue
- this.cueStartTime = time;
- } else {
- if (!this.displayedMemory.equals(this.lastOutputScreen)) {
- this.outputFilter.newCue(this.cueStartTime, time, this.lastOutputScreen);
- if (dispatch && this.outputFilter.dispatchCue) {
- this.outputFilter.dispatchCue();
- }
- this.cueStartTime = this.displayedMemory.isEmpty() ? null : time;
- }
- }
- this.lastOutputScreen.copy(this.displayedMemory);
- }
- };
- _proto6.cueSplitAtTime = function cueSplitAtTime(t) {
- if (this.outputFilter) {
- if (!this.displayedMemory.isEmpty()) {
- if (this.outputFilter.newCue) {
- this.outputFilter.newCue(this.cueStartTime, t, this.displayedMemory);
- }
- this.cueStartTime = t;
- }
- }
- };
- return Cea608Channel;
- }(); // Will be 1 or 2 when parsing captions
- var Cea608Parser = /*#__PURE__*/function () {
- function Cea608Parser(field, out1, out2) {
- this.channels = void 0;
- this.currentChannel = 0;
- this.cmdHistory = createCmdHistory();
- this.logger = void 0;
- var logger = this.logger = new CaptionsLogger();
- this.channels = [null, new Cea608Channel(field, out1, logger), new Cea608Channel(field + 1, out2, logger)];
- }
- var _proto7 = Cea608Parser.prototype;
- _proto7.getHandler = function getHandler(channel) {
- return this.channels[channel].getHandler();
- };
- _proto7.setHandler = function setHandler(channel, newHandler) {
- this.channels[channel].setHandler(newHandler);
- }
-
- /**
- * Add data for time t in forms of list of bytes (unsigned ints). The bytes are treated as pairs.
- */;
- _proto7.addData = function addData(time, byteList) {
- var _this5 = this;
- this.logger.time = time;
- var _loop = function _loop(i) {
- var a = byteList[i] & 0x7f;
- var b = byteList[i + 1] & 0x7f;
- var cmdFound = false;
- var charsFound = null;
- if (a === 0 && b === 0) {
- return 0; // continue
- } else {
- _this5.logger.log(3, function () {
- return '[' + numArrayToHexArray([byteList[i], byteList[i + 1]]) + '] -> (' + numArrayToHexArray([a, b]) + ')';
- });
- }
- var cmdHistory = _this5.cmdHistory;
- var isControlCode = a >= 0x10 && a <= 0x1f;
- if (isControlCode) {
- // Skip redundant control codes
- if (hasCmdRepeated(a, b, cmdHistory)) {
- setLastCmd(null, null, cmdHistory);
- _this5.logger.log(3, function () {
- return 'Repeated command (' + numArrayToHexArray([a, b]) + ') is dropped';
- });
- return 0; // continue
- }
- setLastCmd(a, b, _this5.cmdHistory);
- cmdFound = _this5.parseCmd(a, b);
- if (!cmdFound) {
- cmdFound = _this5.parseMidrow(a, b);
- }
- if (!cmdFound) {
- cmdFound = _this5.parsePAC(a, b);
- }
- if (!cmdFound) {
- cmdFound = _this5.parseBackgroundAttributes(a, b);
- }
- } else {
- setLastCmd(null, null, cmdHistory);
- }
- if (!cmdFound) {
- charsFound = _this5.parseChars(a, b);
- if (charsFound) {
- var currChNr = _this5.currentChannel;
- if (currChNr && currChNr > 0) {
- var channel = _this5.channels[currChNr];
- channel.insertChars(charsFound);
- } else {
- _this5.logger.log(2, 'No channel found yet. TEXT-MODE?');
- }
- }
- }
- if (!cmdFound && !charsFound) {
- _this5.logger.log(2, function () {
- return "Couldn't parse cleaned data " + numArrayToHexArray([a, b]) + ' orig: ' + numArrayToHexArray([byteList[i], byteList[i + 1]]);
- });
- }
- },
- _ret;
- for (var i = 0; i < byteList.length; i += 2) {
- _ret = _loop(i);
- if (_ret === 0) continue;
- }
- }
-
- /**
- * Parse Command.
- * @returns True if a command was found
- */;
- _proto7.parseCmd = function parseCmd(a, b) {
- var cond1 = (a === 0x14 || a === 0x1c || a === 0x15 || a === 0x1d) && b >= 0x20 && b <= 0x2f;
- var cond2 = (a === 0x17 || a === 0x1f) && b >= 0x21 && b <= 0x23;
- if (!(cond1 || cond2)) {
- return false;
- }
- var chNr = a === 0x14 || a === 0x15 || a === 0x17 ? 1 : 2;
- var channel = this.channels[chNr];
- if (a === 0x14 || a === 0x15 || a === 0x1c || a === 0x1d) {
- if (b === 0x20) {
- channel.ccRCL();
- } else if (b === 0x21) {
- channel.ccBS();
- } else if (b === 0x22) {
- channel.ccAOF();
- } else if (b === 0x23) {
- channel.ccAON();
- } else if (b === 0x24) {
- channel.ccDER();
- } else if (b === 0x25) {
- channel.ccRU(2);
- } else if (b === 0x26) {
- channel.ccRU(3);
- } else if (b === 0x27) {
- channel.ccRU(4);
- } else if (b === 0x28) {
- channel.ccFON();
- } else if (b === 0x29) {
- channel.ccRDC();
- } else if (b === 0x2a) {
- channel.ccTR();
- } else if (b === 0x2b) {
- channel.ccRTD();
- } else if (b === 0x2c) {
- channel.ccEDM();
- } else if (b === 0x2d) {
- channel.ccCR();
- } else if (b === 0x2e) {
- channel.ccENM();
- } else if (b === 0x2f) {
- channel.ccEOC();
- }
- } else {
- // a == 0x17 || a == 0x1F
- channel.ccTO(b - 0x20);
- }
- this.currentChannel = chNr;
- return true;
- }
-
- /**
- * Parse midrow styling command
- */;
- _proto7.parseMidrow = function parseMidrow(a, b) {
- var chNr = 0;
- if ((a === 0x11 || a === 0x19) && b >= 0x20 && b <= 0x2f) {
- if (a === 0x11) {
- chNr = 1;
- } else {
- chNr = 2;
- }
- if (chNr !== this.currentChannel) {
- this.logger.log(0, 'Mismatch channel in midrow parsing');
- return false;
- }
- var channel = this.channels[chNr];
- if (!channel) {
- return false;
- }
- channel.ccMIDROW(b);
- this.logger.log(3, function () {
- return 'MIDROW (' + numArrayToHexArray([a, b]) + ')';
- });
- return true;
- }
- return false;
- }
-
- /**
- * Parse Preable Access Codes (Table 53).
- * @returns {Boolean} Tells if PAC found
- */;
- _proto7.parsePAC = function parsePAC(a, b) {
- var row;
- var case1 = (a >= 0x11 && a <= 0x17 || a >= 0x19 && a <= 0x1f) && b >= 0x40 && b <= 0x7f;
- var case2 = (a === 0x10 || a === 0x18) && b >= 0x40 && b <= 0x5f;
- if (!(case1 || case2)) {
- return false;
- }
- var chNr = a <= 0x17 ? 1 : 2;
- if (b >= 0x40 && b <= 0x5f) {
- row = chNr === 1 ? rowsLowCh1[a] : rowsLowCh2[a];
- } else {
- // 0x60 <= b <= 0x7F
- row = chNr === 1 ? rowsHighCh1[a] : rowsHighCh2[a];
- }
- var channel = this.channels[chNr];
- if (!channel) {
- return false;
- }
- channel.setPAC(this.interpretPAC(row, b));
- this.currentChannel = chNr;
- return true;
- }
-
- /**
- * Interpret the second byte of the pac, and return the information.
- * @returns pacData with style parameters
- */;
- _proto7.interpretPAC = function interpretPAC(row, _byte3) {
- var pacIndex;
- var pacData = {
- color: null,
- italics: false,
- indent: null,
- underline: false,
- row: row
- };
- if (_byte3 > 0x5f) {
- pacIndex = _byte3 - 0x60;
- } else {
- pacIndex = _byte3 - 0x40;
- }
- pacData.underline = (pacIndex & 1) === 1;
- if (pacIndex <= 0xd) {
- pacData.color = ['white', 'green', 'blue', 'cyan', 'red', 'yellow', 'magenta', 'white'][Math.floor(pacIndex / 2)];
- } else if (pacIndex <= 0xf) {
- pacData.italics = true;
- pacData.color = 'white';
- } else {
- pacData.indent = Math.floor((pacIndex - 0x10) / 2) * 4;
- }
- return pacData; // Note that row has zero offset. The spec uses 1.
- }
-
- /**
- * Parse characters.
- * @returns An array with 1 to 2 codes corresponding to chars, if found. null otherwise.
- */;
- _proto7.parseChars = function parseChars(a, b) {
- var channelNr;
- var charCodes = null;
- var charCode1 = null;
- if (a >= 0x19) {
- channelNr = 2;
- charCode1 = a - 8;
- } else {
- channelNr = 1;
- charCode1 = a;
- }
- if (charCode1 >= 0x11 && charCode1 <= 0x13) {
- // Special character
- var oneCode;
- if (charCode1 === 0x11) {
- oneCode = b + 0x50;
- } else if (charCode1 === 0x12) {
- oneCode = b + 0x70;
- } else {
- oneCode = b + 0x90;
- }
- this.logger.log(2, function () {
- return "Special char '" + getCharForByte(oneCode) + "' in channel " + channelNr;
- });
- charCodes = [oneCode];
- } else if (a >= 0x20 && a <= 0x7f) {
- charCodes = b === 0 ? [a] : [a, b];
- }
- if (charCodes) {
- this.logger.log(3, function () {
- return 'Char codes = ' + numArrayToHexArray(charCodes).join(',');
- });
- }
- return charCodes;
- }
-
- /**
- * Parse extended background attributes as well as new foreground color black.
- * @returns True if background attributes are found
- */;
- _proto7.parseBackgroundAttributes = function parseBackgroundAttributes(a, b) {
- var case1 = (a === 0x10 || a === 0x18) && b >= 0x20 && b <= 0x2f;
- var case2 = (a === 0x17 || a === 0x1f) && b >= 0x2d && b <= 0x2f;
- if (!(case1 || case2)) {
- return false;
- }
- var index;
- var bkgData = {};
- if (a === 0x10 || a === 0x18) {
- index = Math.floor((b - 0x20) / 2);
- bkgData.background = backgroundColors[index];
- if (b % 2 === 1) {
- bkgData.background = bkgData.background + '_semi';
- }
- } else if (b === 0x2d) {
- bkgData.background = 'transparent';
- } else {
- bkgData.foreground = 'black';
- if (b === 0x2f) {
- bkgData.underline = true;
- }
- }
- var chNr = a <= 0x17 ? 1 : 2;
- var channel = this.channels[chNr];
- channel.setBkgData(bkgData);
- return true;
- }
-
- /**
- * Reset state of parser and its channels.
- */;
- _proto7.reset = function reset() {
- for (var i = 0; i < Object.keys(this.channels).length; i++) {
- var channel = this.channels[i];
- if (channel) {
- channel.reset();
- }
- }
- setLastCmd(null, null, this.cmdHistory);
- }
-
- /**
- * Trigger the generation of a cue, and the start of a new one if displayScreens are not empty.
- */;
- _proto7.cueSplitAtTime = function cueSplitAtTime(t) {
- for (var i = 0; i < this.channels.length; i++) {
- var channel = this.channels[i];
- if (channel) {
- channel.cueSplitAtTime(t);
- }
- }
- };
- return Cea608Parser;
- }();
- function setLastCmd(a, b, cmdHistory) {
- cmdHistory.a = a;
- cmdHistory.b = b;
- }
- function hasCmdRepeated(a, b, cmdHistory) {
- return cmdHistory.a === a && cmdHistory.b === b;
- }
- function createCmdHistory() {
- return {
- a: null,
- b: null
- };
- }
-
- var OutputFilter = /*#__PURE__*/function () {
- function OutputFilter(timelineController, trackName) {
- this.timelineController = void 0;
- this.cueRanges = [];
- this.trackName = void 0;
- this.startTime = null;
- this.endTime = null;
- this.screen = null;
- this.timelineController = timelineController;
- this.trackName = trackName;
- }
- var _proto = OutputFilter.prototype;
- _proto.dispatchCue = function dispatchCue() {
- if (this.startTime === null) {
- return;
- }
- this.timelineController.addCues(this.trackName, this.startTime, this.endTime, this.screen, this.cueRanges);
- this.startTime = null;
- };
- _proto.newCue = function newCue(startTime, endTime, screen) {
- if (this.startTime === null || this.startTime > startTime) {
- this.startTime = startTime;
- }
- this.endTime = endTime;
- this.screen = screen;
- this.timelineController.createCaptionsTrack(this.trackName);
- };
- _proto.reset = function reset() {
- this.cueRanges = [];
- this.startTime = null;
- };
- return OutputFilter;
- }();
-
- /**
- * Copyright 2013 vtt.js Contributors
- *
- * Licensed under the Apache License, Version 2.0 (the 'License');
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an 'AS IS' BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- var VTTCue = (function () {
- if (optionalSelf != null && optionalSelf.VTTCue) {
- return self.VTTCue;
- }
- var AllowedDirections = ['', 'lr', 'rl'];
- var AllowedAlignments = ['start', 'middle', 'end', 'left', 'right'];
- function isAllowedValue(allowed, value) {
- if (typeof value !== 'string') {
- return false;
- }
- // necessary for assuring the generic conforms to the Array interface
- if (!Array.isArray(allowed)) {
- return false;
- }
- // reset the type so that the next narrowing works well
- var lcValue = value.toLowerCase();
- // use the allow list to narrow the type to a specific subset of strings
- if (~allowed.indexOf(lcValue)) {
- return lcValue;
- }
- return false;
- }
- function findDirectionSetting(value) {
- return isAllowedValue(AllowedDirections, value);
- }
- function findAlignSetting(value) {
- return isAllowedValue(AllowedAlignments, value);
- }
- function extend(obj) {
- for (var _len = arguments.length, rest = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
- rest[_key - 1] = arguments[_key];
- }
- var i = 1;
- for (; i < arguments.length; i++) {
- var cobj = arguments[i];
- for (var p in cobj) {
- obj[p] = cobj[p];
- }
- }
- return obj;
- }
- function VTTCue(startTime, endTime, text) {
- var cue = this;
- var baseObj = {
- enumerable: true
- };
- /**
- * Shim implementation specific properties. These properties are not in
- * the spec.
- */
-
- // Lets us know when the VTTCue's data has changed in such a way that we need
- // to recompute its display state. This lets us compute its display state
- // lazily.
- cue.hasBeenReset = false;
-
- /**
- * VTTCue and TextTrackCue properties
- * http://dev.w3.org/html5/webvtt/#vttcue-interface
- */
-
- var _id = '';
- var _pauseOnExit = false;
- var _startTime = startTime;
- var _endTime = endTime;
- var _text = text;
- var _region = null;
- var _vertical = '';
- var _snapToLines = true;
- var _line = 'auto';
- var _lineAlign = 'start';
- var _position = 50;
- var _positionAlign = 'middle';
- var _size = 50;
- var _align = 'middle';
- Object.defineProperty(cue, 'id', extend({}, baseObj, {
- get: function get() {
- return _id;
- },
- set: function set(value) {
- _id = '' + value;
- }
- }));
- Object.defineProperty(cue, 'pauseOnExit', extend({}, baseObj, {
- get: function get() {
- return _pauseOnExit;
- },
- set: function set(value) {
- _pauseOnExit = !!value;
- }
- }));
- Object.defineProperty(cue, 'startTime', extend({}, baseObj, {
- get: function get() {
- return _startTime;
- },
- set: function set(value) {
- if (typeof value !== 'number') {
- throw new TypeError('Start time must be set to a number.');
- }
- _startTime = value;
- this.hasBeenReset = true;
- }
- }));
- Object.defineProperty(cue, 'endTime', extend({}, baseObj, {
- get: function get() {
- return _endTime;
- },
- set: function set(value) {
- if (typeof value !== 'number') {
- throw new TypeError('End time must be set to a number.');
- }
- _endTime = value;
- this.hasBeenReset = true;
- }
- }));
- Object.defineProperty(cue, 'text', extend({}, baseObj, {
- get: function get() {
- return _text;
- },
- set: function set(value) {
- _text = '' + value;
- this.hasBeenReset = true;
- }
- }));
-
- // todo: implement VTTRegion polyfill?
- Object.defineProperty(cue, 'region', extend({}, baseObj, {
- get: function get() {
- return _region;
- },
- set: function set(value) {
- _region = value;
- this.hasBeenReset = true;
- }
- }));
- Object.defineProperty(cue, 'vertical', extend({}, baseObj, {
- get: function get() {
- return _vertical;
- },
- set: function set(value) {
- var setting = findDirectionSetting(value);
- // Have to check for false because the setting an be an empty string.
- if (setting === false) {
- throw new SyntaxError('An invalid or illegal string was specified.');
- }
- _vertical = setting;
- this.hasBeenReset = true;
- }
- }));
- Object.defineProperty(cue, 'snapToLines', extend({}, baseObj, {
- get: function get() {
- return _snapToLines;
- },
- set: function set(value) {
- _snapToLines = !!value;
- this.hasBeenReset = true;
- }
- }));
- Object.defineProperty(cue, 'line', extend({}, baseObj, {
- get: function get() {
- return _line;
- },
- set: function set(value) {
- if (typeof value !== 'number' && value !== 'auto') {
- throw new SyntaxError('An invalid number or illegal string was specified.');
- }
- _line = value;
- this.hasBeenReset = true;
- }
- }));
- Object.defineProperty(cue, 'lineAlign', extend({}, baseObj, {
- get: function get() {
- return _lineAlign;
- },
- set: function set(value) {
- var setting = findAlignSetting(value);
- if (!setting) {
- throw new SyntaxError('An invalid or illegal string was specified.');
- }
- _lineAlign = setting;
- this.hasBeenReset = true;
- }
- }));
- Object.defineProperty(cue, 'position', extend({}, baseObj, {
- get: function get() {
- return _position;
- },
- set: function set(value) {
- if (value < 0 || value > 100) {
- throw new Error('Position must be between 0 and 100.');
- }
- _position = value;
- this.hasBeenReset = true;
- }
- }));
- Object.defineProperty(cue, 'positionAlign', extend({}, baseObj, {
- get: function get() {
- return _positionAlign;
- },
- set: function set(value) {
- var setting = findAlignSetting(value);
- if (!setting) {
- throw new SyntaxError('An invalid or illegal string was specified.');
- }
- _positionAlign = setting;
- this.hasBeenReset = true;
- }
- }));
- Object.defineProperty(cue, 'size', extend({}, baseObj, {
- get: function get() {
- return _size;
- },
- set: function set(value) {
- if (value < 0 || value > 100) {
- throw new Error('Size must be between 0 and 100.');
- }
- _size = value;
- this.hasBeenReset = true;
- }
- }));
- Object.defineProperty(cue, 'align', extend({}, baseObj, {
- get: function get() {
- return _align;
- },
- set: function set(value) {
- var setting = findAlignSetting(value);
- if (!setting) {
- throw new SyntaxError('An invalid or illegal string was specified.');
- }
- _align = setting;
- this.hasBeenReset = true;
- }
- }));
-
- /**
- * Other spec defined properties
- */
-
- // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-cue-display-state
- cue.displayState = undefined;
- }
-
- /**
- * VTTCue methods
- */
-
- VTTCue.prototype.getCueAsHTML = function () {
- // Assume WebVTT.convertCueToDOMTree is on the global.
- var WebVTT = self.WebVTT;
- return WebVTT.convertCueToDOMTree(self, this.text);
- };
- // this is a polyfill hack
- return VTTCue;
- })();
-
- /*
- * Source: https://github.com/mozilla/vtt.js/blob/master/dist/vtt.js
- */
-
- var StringDecoder = /*#__PURE__*/function () {
- function StringDecoder() {}
- var _proto = StringDecoder.prototype;
- // eslint-disable-next-line @typescript-eslint/no-unused-vars
- _proto.decode = function decode(data, options) {
- if (!data) {
- return '';
- }
- if (typeof data !== 'string') {
- throw new Error('Error - expected string data.');
- }
- return decodeURIComponent(encodeURIComponent(data));
- };
- return StringDecoder;
- }(); // Try to parse input as a time stamp.
- function parseTimeStamp(input) {
- function computeSeconds(h, m, s, f) {
- return (h | 0) * 3600 + (m | 0) * 60 + (s | 0) + parseFloat(f || 0);
- }
- var m = input.match(/^(?:(\d+):)?(\d{2}):(\d{2})(\.\d+)?/);
- if (!m) {
- return null;
- }
- if (parseFloat(m[2]) > 59) {
- // Timestamp takes the form of [hours]:[minutes].[milliseconds]
- // First position is hours as it's over 59.
- return computeSeconds(m[2], m[3], 0, m[4]);
- }
- // Timestamp takes the form of [hours (optional)]:[minutes]:[seconds].[milliseconds]
- return computeSeconds(m[1], m[2], m[3], m[4]);
- }
-
- // A settings object holds key/value pairs and will ignore anything but the first
- // assignment to a specific key.
- var Settings = /*#__PURE__*/function () {
- function Settings() {
- this.values = Object.create(null);
- }
- var _proto2 = Settings.prototype;
- // Only accept the first assignment to any key.
- _proto2.set = function set(k, v) {
- if (!this.get(k) && v !== '') {
- this.values[k] = v;
- }
- }
- // Return the value for a key, or a default value.
- // If 'defaultKey' is passed then 'dflt' is assumed to be an object with
- // a number of possible default values as properties where 'defaultKey' is
- // the key of the property that will be chosen; otherwise it's assumed to be
- // a single value.
- ;
- _proto2.get = function get(k, dflt, defaultKey) {
- if (defaultKey) {
- return this.has(k) ? this.values[k] : dflt[defaultKey];
- }
- return this.has(k) ? this.values[k] : dflt;
- }
- // Check whether we have a value for a key.
- ;
- _proto2.has = function has(k) {
- return k in this.values;
- }
- // Accept a setting if its one of the given alternatives.
- ;
- _proto2.alt = function alt(k, v, a) {
- for (var n = 0; n < a.length; ++n) {
- if (v === a[n]) {
- this.set(k, v);
- break;
- }
- }
- }
- // Accept a setting if its a valid (signed) integer.
- ;
- _proto2.integer = function integer(k, v) {
- if (/^-?\d+$/.test(v)) {
- // integer
- this.set(k, parseInt(v, 10));
- }
- }
- // Accept a setting if its a valid percentage.
- ;
- _proto2.percent = function percent(k, v) {
- if (/^([\d]{1,3})(\.[\d]*)?%$/.test(v)) {
- var percent = parseFloat(v);
- if (percent >= 0 && percent <= 100) {
- this.set(k, percent);
- return true;
- }
- }
- return false;
- };
- return Settings;
- }(); // Helper function to parse input into groups separated by 'groupDelim', and
- // interpret each group as a key/value pair separated by 'keyValueDelim'.
- function parseOptions(input, callback, keyValueDelim, groupDelim) {
- var groups = groupDelim ? input.split(groupDelim) : [input];
- for (var i in groups) {
- if (typeof groups[i] !== 'string') {
- continue;
- }
- var kv = groups[i].split(keyValueDelim);
- if (kv.length !== 2) {
- continue;
- }
- var _k = kv[0];
- var _v = kv[1];
- callback(_k, _v);
- }
- }
- var defaults = new VTTCue(0, 0, '');
- // 'middle' was changed to 'center' in the spec: https://github.com/w3c/webvtt/pull/244
- // Safari doesn't yet support this change, but FF and Chrome do.
- var center = defaults.align === 'middle' ? 'middle' : 'center';
- function parseCue(input, cue, regionList) {
- // Remember the original input if we need to throw an error.
- var oInput = input;
- // 4.1 WebVTT timestamp
- function consumeTimeStamp() {
- var ts = parseTimeStamp(input);
- if (ts === null) {
- throw new Error('Malformed timestamp: ' + oInput);
- }
-
- // Remove time stamp from input.
- input = input.replace(/^[^\sa-zA-Z-]+/, '');
- return ts;
- }
-
- // 4.4.2 WebVTT cue settings
- function consumeCueSettings(input, cue) {
- var settings = new Settings();
- parseOptions(input, function (k, v) {
- var vals;
- switch (k) {
- case 'region':
- // Find the last region we parsed with the same region id.
- for (var i = regionList.length - 1; i >= 0; i--) {
- if (regionList[i].id === v) {
- settings.set(k, regionList[i].region);
- break;
- }
- }
- break;
- case 'vertical':
- settings.alt(k, v, ['rl', 'lr']);
- break;
- case 'line':
- vals = v.split(',');
- settings.integer(k, vals[0]);
- if (settings.percent(k, vals[0])) {
- settings.set('snapToLines', false);
- }
- settings.alt(k, vals[0], ['auto']);
- if (vals.length === 2) {
- settings.alt('lineAlign', vals[1], ['start', center, 'end']);
- }
- break;
- case 'position':
- vals = v.split(',');
- settings.percent(k, vals[0]);
- if (vals.length === 2) {
- settings.alt('positionAlign', vals[1], ['start', center, 'end', 'line-left', 'line-right', 'auto']);
- }
- break;
- case 'size':
- settings.percent(k, v);
- break;
- case 'align':
- settings.alt(k, v, ['start', center, 'end', 'left', 'right']);
- break;
- }
- }, /:/, /\s/);
-
- // Apply default values for any missing fields.
- cue.region = settings.get('region', null);
- cue.vertical = settings.get('vertical', '');
- var line = settings.get('line', 'auto');
- if (line === 'auto' && defaults.line === -1) {
- // set numeric line number for Safari
- line = -1;
- }
- cue.line = line;
- cue.lineAlign = settings.get('lineAlign', 'start');
- cue.snapToLines = settings.get('snapToLines', true);
- cue.size = settings.get('size', 100);
- cue.align = settings.get('align', center);
- var position = settings.get('position', 'auto');
- if (position === 'auto' && defaults.position === 50) {
- // set numeric position for Safari
- position = cue.align === 'start' || cue.align === 'left' ? 0 : cue.align === 'end' || cue.align === 'right' ? 100 : 50;
- }
- cue.position = position;
- }
- function skipWhitespace() {
- input = input.replace(/^\s+/, '');
- }
-
- // 4.1 WebVTT cue timings.
- skipWhitespace();
- cue.startTime = consumeTimeStamp(); // (1) collect cue start time
- skipWhitespace();
- if (input.slice(0, 3) !== '-->') {
- // (3) next characters must match '-->'
- throw new Error("Malformed time stamp (time stamps must be separated by '-->'): " + oInput);
- }
- input = input.slice(3);
- skipWhitespace();
- cue.endTime = consumeTimeStamp(); // (5) collect cue end time
-
- // 4.1 WebVTT cue settings list.
- skipWhitespace();
- consumeCueSettings(input, cue);
- }
- function fixLineBreaks(input) {
- return input.replace(/ /gi, '\n');
- }
- var VTTParser = /*#__PURE__*/function () {
- function VTTParser() {
- this.state = 'INITIAL';
- this.buffer = '';
- this.decoder = new StringDecoder();
- this.regionList = [];
- this.cue = null;
- this.oncue = void 0;
- this.onparsingerror = void 0;
- this.onflush = void 0;
- }
- var _proto3 = VTTParser.prototype;
- _proto3.parse = function parse(data) {
- var _this = this;
-
- // If there is no data then we won't decode it, but will just try to parse
- // whatever is in buffer already. This may occur in circumstances, for
- // example when flush() is called.
- if (data) {
- // Try to decode the data that we received.
- _this.buffer += _this.decoder.decode(data, {
- stream: true
- });
- }
- function collectNextLine() {
- var buffer = _this.buffer;
- var pos = 0;
- buffer = fixLineBreaks(buffer);
- while (pos < buffer.length && buffer[pos] !== '\r' && buffer[pos] !== '\n') {
- ++pos;
- }
- var line = buffer.slice(0, pos);
- // Advance the buffer early in case we fail below.
- if (buffer[pos] === '\r') {
- ++pos;
- }
- if (buffer[pos] === '\n') {
- ++pos;
- }
- _this.buffer = buffer.slice(pos);
- return line;
- }
-
- // 3.2 WebVTT metadata header syntax
- function parseHeader(input) {
- parseOptions(input, function (k, v) {
- // switch (k) {
- // case 'region':
- // 3.3 WebVTT region metadata header syntax
- // console.log('parse region', v);
- // parseRegion(v);
- // break;
- // }
- }, /:/);
- }
-
- // 5.1 WebVTT file parsing.
- try {
- var line = '';
- if (_this.state === 'INITIAL') {
- // We can't start parsing until we have the first line.
- if (!/\r\n|\n/.test(_this.buffer)) {
- return this;
- }
- line = collectNextLine();
- // strip of UTF-8 BOM if any
- // https://en.wikipedia.org/wiki/Byte_order_mark#UTF-8
- var m = line.match(/^()?WEBVTT([ \t].*)?$/);
- if (!(m != null && m[0])) {
- throw new Error('Malformed WebVTT signature.');
- }
- _this.state = 'HEADER';
- }
- var alreadyCollectedLine = false;
- while (_this.buffer) {
- // We can't parse a line until we have the full line.
- if (!/\r\n|\n/.test(_this.buffer)) {
- return this;
- }
- if (!alreadyCollectedLine) {
- line = collectNextLine();
- } else {
- alreadyCollectedLine = false;
- }
- switch (_this.state) {
- case 'HEADER':
- // 13-18 - Allow a header (metadata) under the WEBVTT line.
- if (/:/.test(line)) {
- parseHeader(line);
- } else if (!line) {
- // An empty line terminates the header and starts the body (cues).
- _this.state = 'ID';
- }
- continue;
- case 'NOTE':
- // Ignore NOTE blocks.
- if (!line) {
- _this.state = 'ID';
- }
- continue;
- case 'ID':
- // Check for the start of NOTE blocks.
- if (/^NOTE($|[ \t])/.test(line)) {
- _this.state = 'NOTE';
- break;
- }
- // 19-29 - Allow any number of line terminators, then initialize new cue values.
- if (!line) {
- continue;
- }
- _this.cue = new VTTCue(0, 0, '');
- _this.state = 'CUE';
- // 30-39 - Check if self line contains an optional identifier or timing data.
- if (line.indexOf('-->') === -1) {
- _this.cue.id = line;
- continue;
- }
- // Process line as start of a cue.
- /* falls through */
- case 'CUE':
- // 40 - Collect cue timings and settings.
- if (!_this.cue) {
- _this.state = 'BADCUE';
- continue;
- }
- try {
- parseCue(line, _this.cue, _this.regionList);
- } catch (e) {
- // In case of an error ignore rest of the cue.
- _this.cue = null;
- _this.state = 'BADCUE';
- continue;
- }
- _this.state = 'CUETEXT';
- continue;
- case 'CUETEXT':
- {
- var hasSubstring = line.indexOf('-->') !== -1;
- // 34 - If we have an empty line then report the cue.
- // 35 - If we have the special substring '-->' then report the cue,
- // but do not collect the line as we need to process the current
- // one as a new cue.
- if (!line || hasSubstring && (alreadyCollectedLine = true)) {
- // We are done parsing self cue.
- if (_this.oncue && _this.cue) {
- _this.oncue(_this.cue);
- }
- _this.cue = null;
- _this.state = 'ID';
- continue;
- }
- if (_this.cue === null) {
- continue;
- }
- if (_this.cue.text) {
- _this.cue.text += '\n';
- }
- _this.cue.text += line;
- }
- continue;
- case 'BADCUE':
- // 54-62 - Collect and discard the remaining cue.
- if (!line) {
- _this.state = 'ID';
- }
- }
- }
- } catch (e) {
- // If we are currently parsing a cue, report what we have.
- if (_this.state === 'CUETEXT' && _this.cue && _this.oncue) {
- _this.oncue(_this.cue);
- }
- _this.cue = null;
- // Enter BADWEBVTT state if header was not parsed correctly otherwise
- // another exception occurred so enter BADCUE state.
- _this.state = _this.state === 'INITIAL' ? 'BADWEBVTT' : 'BADCUE';
- }
- return this;
- };
- _proto3.flush = function flush() {
- var _this = this;
- try {
- // Finish decoding the stream.
- // _this.buffer += _this.decoder.decode();
- // Synthesize the end of the current cue or region.
- if (_this.cue || _this.state === 'HEADER') {
- _this.buffer += '\n\n';
- _this.parse();
- }
- // If we've flushed, parsed, and we're still on the INITIAL state then
- // that means we don't have enough of the stream to parse the first
- // line.
- if (_this.state === 'INITIAL' || _this.state === 'BADWEBVTT') {
- throw new Error('Malformed WebVTT signature.');
- }
- } catch (e) {
- if (_this.onparsingerror) {
- _this.onparsingerror(e);
- }
- }
- if (_this.onflush) {
- _this.onflush();
- }
- return this;
- };
- return VTTParser;
- }();
-
- var LINEBREAKS = /\r\n|\n\r|\n|\r/g;
-
- // String.prototype.startsWith is not supported in IE11
- var startsWith = function startsWith(inputString, searchString, position) {
- if (position === void 0) {
- position = 0;
- }
- return inputString.slice(position, position + searchString.length) === searchString;
- };
- var cueString2millis = function cueString2millis(timeString) {
- var ts = parseInt(timeString.slice(-3));
- var secs = parseInt(timeString.slice(-6, -4));
- var mins = parseInt(timeString.slice(-9, -7));
- var hours = timeString.length > 9 ? parseInt(timeString.substring(0, timeString.indexOf(':'))) : 0;
- if (!isFiniteNumber(ts) || !isFiniteNumber(secs) || !isFiniteNumber(mins) || !isFiniteNumber(hours)) {
- throw Error("Malformed X-TIMESTAMP-MAP: Local:" + timeString);
- }
- ts += 1000 * secs;
- ts += 60 * 1000 * mins;
- ts += 60 * 60 * 1000 * hours;
- return ts;
- };
-
- // From https://github.com/darkskyapp/string-hash
- var hash = function hash(text) {
- var hash = 5381;
- var i = text.length;
- while (i) {
- hash = hash * 33 ^ text.charCodeAt(--i);
- }
- return (hash >>> 0).toString();
- };
-
- // Create a unique hash id for a cue based on start/end times and text.
- // This helps timeline-controller to avoid showing repeated captions.
- function generateCueId(startTime, endTime, text) {
- return hash(startTime.toString()) + hash(endTime.toString()) + hash(text);
- }
- var calculateOffset = function calculateOffset(vttCCs, cc, presentationTime) {
- var currCC = vttCCs[cc];
- var prevCC = vttCCs[currCC.prevCC];
-
- // This is the first discontinuity or cues have been processed since the last discontinuity
- // Offset = current discontinuity time
- if (!prevCC || !prevCC.new && currCC.new) {
- vttCCs.ccOffset = vttCCs.presentationOffset = currCC.start;
- currCC.new = false;
- return;
- }
-
- // There have been discontinuities since cues were last parsed.
- // Offset = time elapsed
- while ((_prevCC = prevCC) != null && _prevCC.new) {
- var _prevCC;
- vttCCs.ccOffset += currCC.start - prevCC.start;
- currCC.new = false;
- currCC = prevCC;
- prevCC = vttCCs[currCC.prevCC];
- }
- vttCCs.presentationOffset = presentationTime;
- };
- function parseWebVTT(vttByteArray, initPTS, vttCCs, cc, timeOffset, callBack, errorCallBack) {
- var parser = new VTTParser();
- // Convert byteArray into string, replacing any somewhat exotic linefeeds with "\n", then split on that character.
- // Uint8Array.prototype.reduce is not implemented in IE11
- var vttLines = utf8ArrayToStr(new Uint8Array(vttByteArray)).trim().replace(LINEBREAKS, '\n').split('\n');
- var cues = [];
- var init90kHz = initPTS ? toMpegTsClockFromTimescale(initPTS.baseTime, initPTS.timescale) : 0;
- var cueTime = '00:00.000';
- var timestampMapMPEGTS = 0;
- var timestampMapLOCAL = 0;
- var parsingError;
- var inHeader = true;
- parser.oncue = function (cue) {
- // Adjust cue timing; clamp cues to start no earlier than - and drop cues that don't end after - 0 on timeline.
- var currCC = vttCCs[cc];
- var cueOffset = vttCCs.ccOffset;
-
- // Calculate subtitle PTS offset
- var webVttMpegTsMapOffset = (timestampMapMPEGTS - init90kHz) / 90000;
-
- // Update offsets for new discontinuities
- if (currCC != null && currCC.new) {
- if (timestampMapLOCAL !== undefined) {
- // When local time is provided, offset = discontinuity start time - local time
- cueOffset = vttCCs.ccOffset = currCC.start;
- } else {
- calculateOffset(vttCCs, cc, webVttMpegTsMapOffset);
- }
- }
- if (webVttMpegTsMapOffset) {
- if (!initPTS) {
- parsingError = new Error('Missing initPTS for VTT MPEGTS');
- return;
- }
- // If we have MPEGTS, offset = presentation time + discontinuity offset
- cueOffset = webVttMpegTsMapOffset - vttCCs.presentationOffset;
- }
- var duration = cue.endTime - cue.startTime;
- var startTime = normalizePts((cue.startTime + cueOffset - timestampMapLOCAL) * 90000, timeOffset * 90000) / 90000;
- cue.startTime = Math.max(startTime, 0);
- cue.endTime = Math.max(startTime + duration, 0);
-
- //trim trailing webvtt block whitespaces
- var text = cue.text.trim();
-
- // Fix encoding of special characters
- cue.text = decodeURIComponent(encodeURIComponent(text));
-
- // If the cue was not assigned an id from the VTT file (line above the content), create one.
- if (!cue.id) {
- cue.id = generateCueId(cue.startTime, cue.endTime, text);
- }
- if (cue.endTime > 0) {
- cues.push(cue);
- }
- };
- parser.onparsingerror = function (error) {
- parsingError = error;
- };
- parser.onflush = function () {
- if (parsingError) {
- errorCallBack(parsingError);
- return;
- }
- callBack(cues);
- };
-
- // Go through contents line by line.
- vttLines.forEach(function (line) {
- if (inHeader) {
- // Look for X-TIMESTAMP-MAP in header.
- if (startsWith(line, 'X-TIMESTAMP-MAP=')) {
- // Once found, no more are allowed anyway, so stop searching.
- inHeader = false;
- // Extract LOCAL and MPEGTS.
- line.slice(16).split(',').forEach(function (timestamp) {
- if (startsWith(timestamp, 'LOCAL:')) {
- cueTime = timestamp.slice(6);
- } else if (startsWith(timestamp, 'MPEGTS:')) {
- timestampMapMPEGTS = parseInt(timestamp.slice(7));
- }
- });
- try {
- // Convert cue time to seconds
- timestampMapLOCAL = cueString2millis(cueTime) / 1000;
- } catch (error) {
- parsingError = error;
- }
- // Return without parsing X-TIMESTAMP-MAP line.
- return;
- } else if (line === '') {
- inHeader = false;
- }
- }
- // Parse line by default.
- parser.parse(line + '\n');
- });
- parser.flush();
- }
-
- var IMSC1_CODEC = 'stpp.ttml.im1t';
-
- // Time format: h:m:s:frames(.subframes)
- var HMSF_REGEX = /^(\d{2,}):(\d{2}):(\d{2}):(\d{2})\.?(\d+)?$/;
-
- // Time format: hours, minutes, seconds, milliseconds, frames, ticks
- var TIME_UNIT_REGEX = /^(\d*(?:\.\d*)?)(h|m|s|ms|f|t)$/;
- var textAlignToLineAlign = {
- left: 'start',
- center: 'center',
- right: 'end',
- start: 'start',
- end: 'end'
- };
- function parseIMSC1(payload, initPTS, callBack, errorCallBack) {
- var results = findBox(new Uint8Array(payload), ['mdat']);
- if (results.length === 0) {
- errorCallBack(new Error('Could not parse IMSC1 mdat'));
- return;
- }
- var ttmlList = results.map(function (mdat) {
- return utf8ArrayToStr(mdat);
- });
- var syncTime = toTimescaleFromScale(initPTS.baseTime, 1, initPTS.timescale);
- try {
- ttmlList.forEach(function (ttml) {
- return callBack(parseTTML(ttml, syncTime));
- });
- } catch (error) {
- errorCallBack(error);
- }
- }
- function parseTTML(ttml, syncTime) {
- var parser = new DOMParser();
- var xmlDoc = parser.parseFromString(ttml, 'text/xml');
- var tt = xmlDoc.getElementsByTagName('tt')[0];
- if (!tt) {
- throw new Error('Invalid ttml');
- }
- var defaultRateInfo = {
- frameRate: 30,
- subFrameRate: 1,
- frameRateMultiplier: 0,
- tickRate: 0
- };
- var rateInfo = Object.keys(defaultRateInfo).reduce(function (result, key) {
- result[key] = tt.getAttribute("ttp:" + key) || defaultRateInfo[key];
- return result;
- }, {});
- var trim = tt.getAttribute('xml:space') !== 'preserve';
- var styleElements = collectionToDictionary(getElementCollection(tt, 'styling', 'style'));
- var regionElements = collectionToDictionary(getElementCollection(tt, 'layout', 'region'));
- var cueElements = getElementCollection(tt, 'body', '[begin]');
- return [].map.call(cueElements, function (cueElement) {
- var cueText = getTextContent(cueElement, trim);
- if (!cueText || !cueElement.hasAttribute('begin')) {
- return null;
- }
- var startTime = parseTtmlTime(cueElement.getAttribute('begin'), rateInfo);
- var duration = parseTtmlTime(cueElement.getAttribute('dur'), rateInfo);
- var endTime = parseTtmlTime(cueElement.getAttribute('end'), rateInfo);
- if (startTime === null) {
- throw timestampParsingError(cueElement);
- }
- if (endTime === null) {
- if (duration === null) {
- throw timestampParsingError(cueElement);
- }
- endTime = startTime + duration;
- }
- var cue = new VTTCue(startTime - syncTime, endTime - syncTime, cueText);
- cue.id = generateCueId(cue.startTime, cue.endTime, cue.text);
- var region = regionElements[cueElement.getAttribute('region')];
- var style = styleElements[cueElement.getAttribute('style')];
-
- // Apply styles to cue
- var styles = getTtmlStyles(region, style, styleElements);
- var textAlign = styles.textAlign;
- if (textAlign) {
- // cue.positionAlign not settable in FF~2016
- var lineAlign = textAlignToLineAlign[textAlign];
- if (lineAlign) {
- cue.lineAlign = lineAlign;
- }
- cue.align = textAlign;
- }
- _extends(cue, styles);
- return cue;
- }).filter(function (cue) {
- return cue !== null;
- });
- }
- function getElementCollection(fromElement, parentName, childName) {
- var parent = fromElement.getElementsByTagName(parentName)[0];
- if (parent) {
- return [].slice.call(parent.querySelectorAll(childName));
- }
- return [];
- }
- function collectionToDictionary(elementsWithId) {
- return elementsWithId.reduce(function (dict, element) {
- var id = element.getAttribute('xml:id');
- if (id) {
- dict[id] = element;
- }
- return dict;
- }, {});
- }
- function getTextContent(element, trim) {
- return [].slice.call(element.childNodes).reduce(function (str, node, i) {
- var _node$childNodes;
- if (node.nodeName === 'br' && i) {
- return str + '\n';
- }
- if ((_node$childNodes = node.childNodes) != null && _node$childNodes.length) {
- return getTextContent(node, trim);
- } else if (trim) {
- return str + node.textContent.trim().replace(/\s+/g, ' ');
- }
- return str + node.textContent;
- }, '');
- }
- function getTtmlStyles(region, style, styleElements) {
- var ttsNs = 'http://www.w3.org/ns/ttml#styling';
- var regionStyle = null;
- var styleAttributes = ['displayAlign', 'textAlign', 'color', 'backgroundColor', 'fontSize', 'fontFamily'
- // 'fontWeight',
- // 'lineHeight',
- // 'wrapOption',
- // 'fontStyle',
- // 'direction',
- // 'writingMode'
- ];
- var regionStyleName = region != null && region.hasAttribute('style') ? region.getAttribute('style') : null;
- if (regionStyleName && styleElements.hasOwnProperty(regionStyleName)) {
- regionStyle = styleElements[regionStyleName];
- }
- return styleAttributes.reduce(function (styles, name) {
- var value = getAttributeNS(style, ttsNs, name) || getAttributeNS(region, ttsNs, name) || getAttributeNS(regionStyle, ttsNs, name);
- if (value) {
- styles[name] = value;
- }
- return styles;
- }, {});
- }
- function getAttributeNS(element, ns, name) {
- if (!element) {
- return null;
- }
- return element.hasAttributeNS(ns, name) ? element.getAttributeNS(ns, name) : null;
- }
- function timestampParsingError(node) {
- return new Error("Could not parse ttml timestamp " + node);
- }
- function parseTtmlTime(timeAttributeValue, rateInfo) {
- if (!timeAttributeValue) {
- return null;
- }
- var seconds = parseTimeStamp(timeAttributeValue);
- if (seconds === null) {
- if (HMSF_REGEX.test(timeAttributeValue)) {
- seconds = parseHoursMinutesSecondsFrames(timeAttributeValue, rateInfo);
- } else if (TIME_UNIT_REGEX.test(timeAttributeValue)) {
- seconds = parseTimeUnits(timeAttributeValue, rateInfo);
- }
- }
- return seconds;
- }
- function parseHoursMinutesSecondsFrames(timeAttributeValue, rateInfo) {
- var m = HMSF_REGEX.exec(timeAttributeValue);
- var frames = (m[4] | 0) + (m[5] | 0) / rateInfo.subFrameRate;
- return (m[1] | 0) * 3600 + (m[2] | 0) * 60 + (m[3] | 0) + frames / rateInfo.frameRate;
- }
- function parseTimeUnits(timeAttributeValue, rateInfo) {
- var m = TIME_UNIT_REGEX.exec(timeAttributeValue);
- var value = Number(m[1]);
- var unit = m[2];
- switch (unit) {
- case 'h':
- return value * 3600;
- case 'm':
- return value * 60;
- case 'ms':
- return value * 1000;
- case 'f':
- return value / rateInfo.frameRate;
- case 't':
- return value / rateInfo.tickRate;
- }
- return value;
- }
-
- var TimelineController = /*#__PURE__*/function () {
- function TimelineController(hls) {
- this.hls = void 0;
- this.media = null;
- this.config = void 0;
- this.enabled = true;
- this.Cues = void 0;
- this.textTracks = [];
- this.tracks = [];
- this.initPTS = [];
- this.unparsedVttFrags = [];
- this.captionsTracks = {};
- this.nonNativeCaptionsTracks = {};
- this.cea608Parser1 = void 0;
- this.cea608Parser2 = void 0;
- this.lastCc = -1;
- // Last video (CEA-608) fragment CC
- this.lastSn = -1;
- // Last video (CEA-608) fragment MSN
- this.lastPartIndex = -1;
- // Last video (CEA-608) fragment Part Index
- this.prevCC = -1;
- // Last subtitle fragment CC
- this.vttCCs = newVTTCCs();
- this.captionsProperties = void 0;
- this.hls = hls;
- this.config = hls.config;
- this.Cues = hls.config.cueHandler;
- this.captionsProperties = {
- textTrack1: {
- label: this.config.captionsTextTrack1Label,
- languageCode: this.config.captionsTextTrack1LanguageCode
- },
- textTrack2: {
- label: this.config.captionsTextTrack2Label,
- languageCode: this.config.captionsTextTrack2LanguageCode
- },
- textTrack3: {
- label: this.config.captionsTextTrack3Label,
- languageCode: this.config.captionsTextTrack3LanguageCode
- },
- textTrack4: {
- label: this.config.captionsTextTrack4Label,
- languageCode: this.config.captionsTextTrack4LanguageCode
- }
- };
- hls.on(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
- hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.on(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
- hls.on(Events.SUBTITLE_TRACKS_UPDATED, this.onSubtitleTracksUpdated, this);
- hls.on(Events.FRAG_LOADING, this.onFragLoading, this);
- hls.on(Events.FRAG_LOADED, this.onFragLoaded, this);
- hls.on(Events.FRAG_PARSING_USERDATA, this.onFragParsingUserdata, this);
- hls.on(Events.FRAG_DECRYPTED, this.onFragDecrypted, this);
- hls.on(Events.INIT_PTS_FOUND, this.onInitPtsFound, this);
- hls.on(Events.SUBTITLE_TRACKS_CLEARED, this.onSubtitleTracksCleared, this);
- hls.on(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
- }
- var _proto = TimelineController.prototype;
- _proto.destroy = function destroy() {
- var hls = this.hls;
- hls.off(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
- hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.off(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
- hls.off(Events.SUBTITLE_TRACKS_UPDATED, this.onSubtitleTracksUpdated, this);
- hls.off(Events.FRAG_LOADING, this.onFragLoading, this);
- hls.off(Events.FRAG_LOADED, this.onFragLoaded, this);
- hls.off(Events.FRAG_PARSING_USERDATA, this.onFragParsingUserdata, this);
- hls.off(Events.FRAG_DECRYPTED, this.onFragDecrypted, this);
- hls.off(Events.INIT_PTS_FOUND, this.onInitPtsFound, this);
- hls.off(Events.SUBTITLE_TRACKS_CLEARED, this.onSubtitleTracksCleared, this);
- hls.off(Events.BUFFER_FLUSHING, this.onBufferFlushing, this);
- // @ts-ignore
- this.hls = this.config = null;
- this.cea608Parser1 = this.cea608Parser2 = undefined;
- };
- _proto.initCea608Parsers = function initCea608Parsers() {
- if (this.config.enableCEA708Captions && (!this.cea608Parser1 || !this.cea608Parser2)) {
- var channel1 = new OutputFilter(this, 'textTrack1');
- var channel2 = new OutputFilter(this, 'textTrack2');
- var channel3 = new OutputFilter(this, 'textTrack3');
- var channel4 = new OutputFilter(this, 'textTrack4');
- this.cea608Parser1 = new Cea608Parser(1, channel1, channel2);
- this.cea608Parser2 = new Cea608Parser(3, channel3, channel4);
- }
- };
- _proto.addCues = function addCues(trackName, startTime, endTime, screen, cueRanges) {
- // skip cues which overlap more than 50% with previously parsed time ranges
- var merged = false;
- for (var i = cueRanges.length; i--;) {
- var cueRange = cueRanges[i];
- var overlap = intersection(cueRange[0], cueRange[1], startTime, endTime);
- if (overlap >= 0) {
- cueRange[0] = Math.min(cueRange[0], startTime);
- cueRange[1] = Math.max(cueRange[1], endTime);
- merged = true;
- if (overlap / (endTime - startTime) > 0.5) {
- return;
- }
- }
- }
- if (!merged) {
- cueRanges.push([startTime, endTime]);
- }
- if (this.config.renderTextTracksNatively) {
- var track = this.captionsTracks[trackName];
- this.Cues.newCue(track, startTime, endTime, screen);
- } else {
- var cues = this.Cues.newCue(null, startTime, endTime, screen);
- this.hls.trigger(Events.CUES_PARSED, {
- type: 'captions',
- cues: cues,
- track: trackName
- });
- }
- }
-
- // Triggered when an initial PTS is found; used for synchronisation of WebVTT.
- ;
- _proto.onInitPtsFound = function onInitPtsFound(event, _ref) {
- var _this = this;
- var frag = _ref.frag,
- id = _ref.id,
- initPTS = _ref.initPTS,
- timescale = _ref.timescale;
- var unparsedVttFrags = this.unparsedVttFrags;
- if (id === 'main') {
- this.initPTS[frag.cc] = {
- baseTime: initPTS,
- timescale: timescale
- };
- }
-
- // Due to asynchronous processing, initial PTS may arrive later than the first VTT fragments are loaded.
- // Parse any unparsed fragments upon receiving the initial PTS.
- if (unparsedVttFrags.length) {
- this.unparsedVttFrags = [];
- unparsedVttFrags.forEach(function (frag) {
- _this.onFragLoaded(Events.FRAG_LOADED, frag);
- });
- }
- };
- _proto.getExistingTrack = function getExistingTrack(label, language) {
- var media = this.media;
- if (media) {
- for (var i = 0; i < media.textTracks.length; i++) {
- var textTrack = media.textTracks[i];
- if (canReuseVttTextTrack(textTrack, {
- name: label,
- lang: language,
- attrs: {}
- })) {
- return textTrack;
- }
- }
- }
- return null;
- };
- _proto.createCaptionsTrack = function createCaptionsTrack(trackName) {
- if (this.config.renderTextTracksNatively) {
- this.createNativeTrack(trackName);
- } else {
- this.createNonNativeTrack(trackName);
- }
- };
- _proto.createNativeTrack = function createNativeTrack(trackName) {
- if (this.captionsTracks[trackName]) {
- return;
- }
- var captionsProperties = this.captionsProperties,
- captionsTracks = this.captionsTracks,
- media = this.media;
- var _captionsProperties$t = captionsProperties[trackName],
- label = _captionsProperties$t.label,
- languageCode = _captionsProperties$t.languageCode;
- // Enable reuse of existing text track.
- var existingTrack = this.getExistingTrack(label, languageCode);
- if (!existingTrack) {
- var textTrack = this.createTextTrack('captions', label, languageCode);
- if (textTrack) {
- // Set a special property on the track so we know it's managed by Hls.js
- textTrack[trackName] = true;
- captionsTracks[trackName] = textTrack;
- }
- } else {
- captionsTracks[trackName] = existingTrack;
- clearCurrentCues(captionsTracks[trackName]);
- sendAddTrackEvent(captionsTracks[trackName], media);
- }
- };
- _proto.createNonNativeTrack = function createNonNativeTrack(trackName) {
- if (this.nonNativeCaptionsTracks[trackName]) {
- return;
- }
- // Create a list of a single track for the provider to consume
- var trackProperties = this.captionsProperties[trackName];
- if (!trackProperties) {
- return;
- }
- var label = trackProperties.label;
- var track = {
- _id: trackName,
- label: label,
- kind: 'captions',
- default: trackProperties.media ? !!trackProperties.media.default : false,
- closedCaptions: trackProperties.media
- };
- this.nonNativeCaptionsTracks[trackName] = track;
- this.hls.trigger(Events.NON_NATIVE_TEXT_TRACKS_FOUND, {
- tracks: [track]
- });
- };
- _proto.createTextTrack = function createTextTrack(kind, label, lang) {
- var media = this.media;
- if (!media) {
- return;
- }
- return media.addTextTrack(kind, label, lang);
- };
- _proto.onMediaAttaching = function onMediaAttaching(event, data) {
- this.media = data.media;
- this._cleanTracks();
- };
- _proto.onMediaDetaching = function onMediaDetaching() {
- var captionsTracks = this.captionsTracks;
- Object.keys(captionsTracks).forEach(function (trackName) {
- clearCurrentCues(captionsTracks[trackName]);
- delete captionsTracks[trackName];
- });
- this.nonNativeCaptionsTracks = {};
- };
- _proto.onManifestLoading = function onManifestLoading() {
- // Detect discontinuity in video fragment (CEA-608) parsing
- this.lastCc = -1;
- this.lastSn = -1;
- this.lastPartIndex = -1;
- // Detect discontinuity in subtitle manifests
- this.prevCC = -1;
- this.vttCCs = newVTTCCs();
- // Reset tracks
- this._cleanTracks();
- this.tracks = [];
- this.captionsTracks = {};
- this.nonNativeCaptionsTracks = {};
- this.textTracks = [];
- this.unparsedVttFrags = [];
- this.initPTS = [];
- if (this.cea608Parser1 && this.cea608Parser2) {
- this.cea608Parser1.reset();
- this.cea608Parser2.reset();
- }
- };
- _proto._cleanTracks = function _cleanTracks() {
- // clear outdated subtitles
- var media = this.media;
- if (!media) {
- return;
- }
- var textTracks = media.textTracks;
- if (textTracks) {
- for (var i = 0; i < textTracks.length; i++) {
- clearCurrentCues(textTracks[i]);
- }
- }
- };
- _proto.onSubtitleTracksUpdated = function onSubtitleTracksUpdated(event, data) {
- var _this2 = this;
- var tracks = data.subtitleTracks || [];
- var hasIMSC1 = tracks.some(function (track) {
- return track.textCodec === IMSC1_CODEC;
- });
- if (this.config.enableWebVTT || hasIMSC1 && this.config.enableIMSC1) {
- var listIsIdentical = subtitleOptionsIdentical(this.tracks, tracks);
- if (listIsIdentical) {
- this.tracks = tracks;
- return;
- }
- this.textTracks = [];
- this.tracks = tracks;
- if (this.config.renderTextTracksNatively) {
- var media = this.media;
- var inUseTracks = media ? filterSubtitleTracks(media.textTracks) : null;
- this.tracks.forEach(function (track, index) {
- // Reuse tracks with the same label and lang, but do not reuse 608/708 tracks
- var textTrack;
- if (inUseTracks) {
- var inUseTrack = null;
- for (var i = 0; i < inUseTracks.length; i++) {
- if (inUseTracks[i] && canReuseVttTextTrack(inUseTracks[i], track)) {
- inUseTrack = inUseTracks[i];
- inUseTracks[i] = null;
- break;
- }
- }
- if (inUseTrack) {
- textTrack = inUseTrack;
- }
- }
- if (textTrack) {
- clearCurrentCues(textTrack);
- } else {
- var textTrackKind = captionsOrSubtitlesFromCharacteristics(track);
- textTrack = _this2.createTextTrack(textTrackKind, track.name, track.lang);
- if (textTrack) {
- textTrack.mode = 'disabled';
- }
- }
- if (textTrack) {
- _this2.textTracks.push(textTrack);
- }
- });
- // Warn when video element has captions or subtitle TextTracks carried over from another source
- if (inUseTracks != null && inUseTracks.length) {
- var unusedTextTracks = inUseTracks.filter(function (t) {
- return t !== null;
- }).map(function (t) {
- return t.label;
- });
- if (unusedTextTracks.length) {
- logger.warn("Media element contains unused subtitle tracks: " + unusedTextTracks.join(', ') + ". Replace media element for each source to clear TextTracks and captions menu.");
- }
- }
- } else if (this.tracks.length) {
- // Create a list of tracks for the provider to consume
- var tracksList = this.tracks.map(function (track) {
- return {
- label: track.name,
- kind: track.type.toLowerCase(),
- default: track.default,
- subtitleTrack: track
- };
- });
- this.hls.trigger(Events.NON_NATIVE_TEXT_TRACKS_FOUND, {
- tracks: tracksList
- });
- }
- }
- };
- _proto.onManifestLoaded = function onManifestLoaded(event, data) {
- var _this3 = this;
- if (this.config.enableCEA708Captions && data.captions) {
- data.captions.forEach(function (captionsTrack) {
- var instreamIdMatch = /(?:CC|SERVICE)([1-4])/.exec(captionsTrack.instreamId);
- if (!instreamIdMatch) {
- return;
- }
- var trackName = "textTrack" + instreamIdMatch[1];
- var trackProperties = _this3.captionsProperties[trackName];
- if (!trackProperties) {
- return;
- }
- trackProperties.label = captionsTrack.name;
- if (captionsTrack.lang) {
- // optional attribute
- trackProperties.languageCode = captionsTrack.lang;
- }
- trackProperties.media = captionsTrack;
- });
- }
- };
- _proto.closedCaptionsForLevel = function closedCaptionsForLevel(frag) {
- var level = this.hls.levels[frag.level];
- return level == null ? void 0 : level.attrs['CLOSED-CAPTIONS'];
- };
- _proto.onFragLoading = function onFragLoading(event, data) {
- // if this frag isn't contiguous, clear the parser so cues with bad start/end times aren't added to the textTrack
- if (this.enabled && data.frag.type === PlaylistLevelType.MAIN) {
- var _data$part$index, _data$part;
- var cea608Parser1 = this.cea608Parser1,
- cea608Parser2 = this.cea608Parser2,
- lastSn = this.lastSn;
- var _data$frag = data.frag,
- cc = _data$frag.cc,
- sn = _data$frag.sn;
- var partIndex = (_data$part$index = (_data$part = data.part) == null ? void 0 : _data$part.index) != null ? _data$part$index : -1;
- if (cea608Parser1 && cea608Parser2) {
- if (sn !== lastSn + 1 || sn === lastSn && partIndex !== this.lastPartIndex + 1 || cc !== this.lastCc) {
- cea608Parser1.reset();
- cea608Parser2.reset();
- }
- }
- this.lastCc = cc;
- this.lastSn = sn;
- this.lastPartIndex = partIndex;
- }
- };
- _proto.onFragLoaded = function onFragLoaded(event, data) {
- var frag = data.frag,
- payload = data.payload;
- if (frag.type === PlaylistLevelType.SUBTITLE) {
- // If fragment is subtitle type, parse as WebVTT.
- if (payload.byteLength) {
- var decryptData = frag.decryptdata;
- // fragment after decryption has a stats object
- var decrypted = ('stats' in data);
- // If the subtitles are not encrypted, parse VTTs now. Otherwise, we need to wait.
- if (decryptData == null || !decryptData.encrypted || decrypted) {
- var trackPlaylistMedia = this.tracks[frag.level];
- var vttCCs = this.vttCCs;
- if (!vttCCs[frag.cc]) {
- vttCCs[frag.cc] = {
- start: frag.start,
- prevCC: this.prevCC,
- new: true
- };
- this.prevCC = frag.cc;
- }
- if (trackPlaylistMedia && trackPlaylistMedia.textCodec === IMSC1_CODEC) {
- this._parseIMSC1(frag, payload);
- } else {
- this._parseVTTs(data);
- }
- }
- } else {
- // In case there is no payload, finish unsuccessfully.
- this.hls.trigger(Events.SUBTITLE_FRAG_PROCESSED, {
- success: false,
- frag: frag,
- error: new Error('Empty subtitle payload')
- });
- }
- }
- };
- _proto._parseIMSC1 = function _parseIMSC1(frag, payload) {
- var _this4 = this;
- var hls = this.hls;
- parseIMSC1(payload, this.initPTS[frag.cc], function (cues) {
- _this4._appendCues(cues, frag.level);
- hls.trigger(Events.SUBTITLE_FRAG_PROCESSED, {
- success: true,
- frag: frag
- });
- }, function (error) {
- logger.log("Failed to parse IMSC1: " + error);
- hls.trigger(Events.SUBTITLE_FRAG_PROCESSED, {
- success: false,
- frag: frag,
- error: error
- });
- });
- };
- _proto._parseVTTs = function _parseVTTs(data) {
- var _frag$initSegment,
- _this5 = this;
- var frag = data.frag,
- payload = data.payload;
- // We need an initial synchronisation PTS. Store fragments as long as none has arrived
- var initPTS = this.initPTS,
- unparsedVttFrags = this.unparsedVttFrags;
- var maxAvCC = initPTS.length - 1;
- if (!initPTS[frag.cc] && maxAvCC === -1) {
- unparsedVttFrags.push(data);
- return;
- }
- var hls = this.hls;
- // Parse the WebVTT file contents.
- var payloadWebVTT = (_frag$initSegment = frag.initSegment) != null && _frag$initSegment.data ? appendUint8Array(frag.initSegment.data, new Uint8Array(payload)) : payload;
- parseWebVTT(payloadWebVTT, this.initPTS[frag.cc], this.vttCCs, frag.cc, frag.start, function (cues) {
- _this5._appendCues(cues, frag.level);
- hls.trigger(Events.SUBTITLE_FRAG_PROCESSED, {
- success: true,
- frag: frag
- });
- }, function (error) {
- var missingInitPTS = error.message === 'Missing initPTS for VTT MPEGTS';
- if (missingInitPTS) {
- unparsedVttFrags.push(data);
- } else {
- _this5._fallbackToIMSC1(frag, payload);
- }
- // Something went wrong while parsing. Trigger event with success false.
- logger.log("Failed to parse VTT cue: " + error);
- if (missingInitPTS && maxAvCC > frag.cc) {
- return;
- }
- hls.trigger(Events.SUBTITLE_FRAG_PROCESSED, {
- success: false,
- frag: frag,
- error: error
- });
- });
- };
- _proto._fallbackToIMSC1 = function _fallbackToIMSC1(frag, payload) {
- var _this6 = this;
- // If textCodec is unknown, try parsing as IMSC1. Set textCodec based on the result
- var trackPlaylistMedia = this.tracks[frag.level];
- if (!trackPlaylistMedia.textCodec) {
- parseIMSC1(payload, this.initPTS[frag.cc], function () {
- trackPlaylistMedia.textCodec = IMSC1_CODEC;
- _this6._parseIMSC1(frag, payload);
- }, function () {
- trackPlaylistMedia.textCodec = 'wvtt';
- });
- }
- };
- _proto._appendCues = function _appendCues(cues, fragLevel) {
- var hls = this.hls;
- if (this.config.renderTextTracksNatively) {
- var textTrack = this.textTracks[fragLevel];
- // WebVTTParser.parse is an async method and if the currently selected text track mode is set to "disabled"
- // before parsing is done then don't try to access currentTrack.cues.getCueById as cues will be null
- // and trying to access getCueById method of cues will throw an exception
- // Because we check if the mode is disabled, we can force check `cues` below. They can't be null.
- if (!textTrack || textTrack.mode === 'disabled') {
- return;
- }
- cues.forEach(function (cue) {
- return addCueToTrack(textTrack, cue);
- });
- } else {
- var currentTrack = this.tracks[fragLevel];
- if (!currentTrack) {
- return;
- }
- var track = currentTrack.default ? 'default' : 'subtitles' + fragLevel;
- hls.trigger(Events.CUES_PARSED, {
- type: 'subtitles',
- cues: cues,
- track: track
- });
- }
- };
- _proto.onFragDecrypted = function onFragDecrypted(event, data) {
- var frag = data.frag;
- if (frag.type === PlaylistLevelType.SUBTITLE) {
- this.onFragLoaded(Events.FRAG_LOADED, data);
- }
- };
- _proto.onSubtitleTracksCleared = function onSubtitleTracksCleared() {
- this.tracks = [];
- this.captionsTracks = {};
- };
- _proto.onFragParsingUserdata = function onFragParsingUserdata(event, data) {
- this.initCea608Parsers();
- var cea608Parser1 = this.cea608Parser1,
- cea608Parser2 = this.cea608Parser2;
- if (!this.enabled || !cea608Parser1 || !cea608Parser2) {
- return;
- }
- var frag = data.frag,
- samples = data.samples;
- if (frag.type === PlaylistLevelType.MAIN && this.closedCaptionsForLevel(frag) === 'NONE') {
- return;
- }
- // If the event contains captions (found in the bytes property), push all bytes into the parser immediately
- // It will create the proper timestamps based on the PTS value
- for (var i = 0; i < samples.length; i++) {
- var ccBytes = samples[i].bytes;
- if (ccBytes) {
- var ccdatas = this.extractCea608Data(ccBytes);
- cea608Parser1.addData(samples[i].pts, ccdatas[0]);
- cea608Parser2.addData(samples[i].pts, ccdatas[1]);
- }
- }
- };
- _proto.onBufferFlushing = function onBufferFlushing(event, _ref2) {
- var startOffset = _ref2.startOffset,
- endOffset = _ref2.endOffset,
- endOffsetSubtitles = _ref2.endOffsetSubtitles,
- type = _ref2.type;
- var media = this.media;
- if (!media || media.currentTime < endOffset) {
- return;
- }
- // Clear 608 caption cues from the captions TextTracks when the video back buffer is flushed
- // Forward cues are never removed because we can loose streamed 608 content from recent fragments
- if (!type || type === 'video') {
- var captionsTracks = this.captionsTracks;
- Object.keys(captionsTracks).forEach(function (trackName) {
- return removeCuesInRange(captionsTracks[trackName], startOffset, endOffset);
- });
- }
- if (this.config.renderTextTracksNatively) {
- // Clear VTT/IMSC1 subtitle cues from the subtitle TextTracks when the back buffer is flushed
- if (startOffset === 0 && endOffsetSubtitles !== undefined) {
- var textTracks = this.textTracks;
- Object.keys(textTracks).forEach(function (trackName) {
- return removeCuesInRange(textTracks[trackName], startOffset, endOffsetSubtitles);
- });
- }
- }
- };
- _proto.extractCea608Data = function extractCea608Data(byteArray) {
- var actualCCBytes = [[], []];
- var count = byteArray[0] & 0x1f;
- var position = 2;
- for (var j = 0; j < count; j++) {
- var tmpByte = byteArray[position++];
- var ccbyte1 = 0x7f & byteArray[position++];
- var ccbyte2 = 0x7f & byteArray[position++];
- if (ccbyte1 === 0 && ccbyte2 === 0) {
- continue;
- }
- var ccValid = (0x04 & tmpByte) !== 0; // Support all four channels
- if (ccValid) {
- var ccType = 0x03 & tmpByte;
- if (0x00 /* CEA608 field1*/ === ccType || 0x01 /* CEA608 field2*/ === ccType) {
- // Exclude CEA708 CC data.
- actualCCBytes[ccType].push(ccbyte1);
- actualCCBytes[ccType].push(ccbyte2);
- }
- }
- }
- return actualCCBytes;
- };
- return TimelineController;
- }();
- function captionsOrSubtitlesFromCharacteristics(track) {
- if (track.characteristics) {
- if (/transcribes-spoken-dialog/gi.test(track.characteristics) && /describes-music-and-sound/gi.test(track.characteristics)) {
- return 'captions';
- }
- }
- return 'subtitles';
- }
- function canReuseVttTextTrack(inUseTrack, manifestTrack) {
- return !!inUseTrack && inUseTrack.kind === captionsOrSubtitlesFromCharacteristics(manifestTrack) && subtitleTrackMatchesTextTrack(manifestTrack, inUseTrack);
- }
- function intersection(x1, x2, y1, y2) {
- return Math.min(x2, y2) - Math.max(x1, y1);
- }
- function newVTTCCs() {
- return {
- ccOffset: 0,
- presentationOffset: 0,
- 0: {
- start: 0,
- prevCC: -1,
- new: true
- }
- };
- }
-
- var CapLevelController = /*#__PURE__*/function () {
- function CapLevelController(hls) {
- this.hls = void 0;
- this.autoLevelCapping = void 0;
- this.firstLevel = void 0;
- this.media = void 0;
- this.restrictedLevels = void 0;
- this.timer = void 0;
- this.clientRect = void 0;
- this.streamController = void 0;
- this.hls = hls;
- this.autoLevelCapping = Number.POSITIVE_INFINITY;
- this.firstLevel = -1;
- this.media = null;
- this.restrictedLevels = [];
- this.timer = undefined;
- this.clientRect = null;
- this.registerListeners();
- }
- var _proto = CapLevelController.prototype;
- _proto.setStreamController = function setStreamController(streamController) {
- this.streamController = streamController;
- };
- _proto.destroy = function destroy() {
- if (this.hls) {
- this.unregisterListener();
- }
- if (this.timer) {
- this.stopCapping();
- }
- this.media = null;
- this.clientRect = null;
- // @ts-ignore
- this.hls = this.streamController = null;
- };
- _proto.registerListeners = function registerListeners() {
- var hls = this.hls;
- hls.on(Events.FPS_DROP_LEVEL_CAPPING, this.onFpsDropLevelCapping, this);
- hls.on(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
- hls.on(Events.MANIFEST_PARSED, this.onManifestParsed, this);
- hls.on(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
- hls.on(Events.BUFFER_CODECS, this.onBufferCodecs, this);
- hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- };
- _proto.unregisterListener = function unregisterListener() {
- var hls = this.hls;
- hls.off(Events.FPS_DROP_LEVEL_CAPPING, this.onFpsDropLevelCapping, this);
- hls.off(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
- hls.off(Events.MANIFEST_PARSED, this.onManifestParsed, this);
- hls.off(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
- hls.off(Events.BUFFER_CODECS, this.onBufferCodecs, this);
- hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- };
- _proto.onFpsDropLevelCapping = function onFpsDropLevelCapping(event, data) {
- // Don't add a restricted level more than once
- var level = this.hls.levels[data.droppedLevel];
- if (this.isLevelAllowed(level)) {
- this.restrictedLevels.push({
- bitrate: level.bitrate,
- height: level.height,
- width: level.width
- });
- }
- };
- _proto.onMediaAttaching = function onMediaAttaching(event, data) {
- this.media = data.media instanceof HTMLVideoElement ? data.media : null;
- this.clientRect = null;
- if (this.timer && this.hls.levels.length) {
- this.detectPlayerSize();
- }
- };
- _proto.onManifestParsed = function onManifestParsed(event, data) {
- var hls = this.hls;
- this.restrictedLevels = [];
- this.firstLevel = data.firstLevel;
- if (hls.config.capLevelToPlayerSize && data.video) {
- // Start capping immediately if the manifest has signaled video codecs
- this.startCapping();
- }
- };
- _proto.onLevelsUpdated = function onLevelsUpdated(event, data) {
- if (this.timer && isFiniteNumber(this.autoLevelCapping)) {
- this.detectPlayerSize();
- }
- }
-
- // Only activate capping when playing a video stream; otherwise, multi-bitrate audio-only streams will be restricted
- // to the first level
- ;
- _proto.onBufferCodecs = function onBufferCodecs(event, data) {
- var hls = this.hls;
- if (hls.config.capLevelToPlayerSize && data.video) {
- // If the manifest did not signal a video codec capping has been deferred until we're certain video is present
- this.startCapping();
- }
- };
- _proto.onMediaDetaching = function onMediaDetaching() {
- this.stopCapping();
- };
- _proto.detectPlayerSize = function detectPlayerSize() {
- if (this.media) {
- if (this.mediaHeight <= 0 || this.mediaWidth <= 0) {
- this.clientRect = null;
- return;
- }
- var levels = this.hls.levels;
- if (levels.length) {
- var hls = this.hls;
- var maxLevel = this.getMaxLevel(levels.length - 1);
- if (maxLevel !== this.autoLevelCapping) {
- logger.log("Setting autoLevelCapping to " + maxLevel + ": " + levels[maxLevel].height + "p@" + levels[maxLevel].bitrate + " for media " + this.mediaWidth + "x" + this.mediaHeight);
- }
- hls.autoLevelCapping = maxLevel;
- if (hls.autoLevelCapping > this.autoLevelCapping && this.streamController) {
- // if auto level capping has a higher value for the previous one, flush the buffer using nextLevelSwitch
- // usually happen when the user go to the fullscreen mode.
- this.streamController.nextLevelSwitch();
- }
- this.autoLevelCapping = hls.autoLevelCapping;
- }
- }
- }
-
- /*
- * returns level should be the one with the dimensions equal or greater than the media (player) dimensions (so the video will be downscaled)
- */;
- _proto.getMaxLevel = function getMaxLevel(capLevelIndex) {
- var _this = this;
- var levels = this.hls.levels;
- if (!levels.length) {
- return -1;
- }
- var validLevels = levels.filter(function (level, index) {
- return _this.isLevelAllowed(level) && index <= capLevelIndex;
- });
- this.clientRect = null;
- return CapLevelController.getMaxLevelByMediaSize(validLevels, this.mediaWidth, this.mediaHeight);
- };
- _proto.startCapping = function startCapping() {
- if (this.timer) {
- // Don't reset capping if started twice; this can happen if the manifest signals a video codec
- return;
- }
- this.autoLevelCapping = Number.POSITIVE_INFINITY;
- self.clearInterval(this.timer);
- this.timer = self.setInterval(this.detectPlayerSize.bind(this), 1000);
- this.detectPlayerSize();
- };
- _proto.stopCapping = function stopCapping() {
- this.restrictedLevels = [];
- this.firstLevel = -1;
- this.autoLevelCapping = Number.POSITIVE_INFINITY;
- if (this.timer) {
- self.clearInterval(this.timer);
- this.timer = undefined;
- }
- };
- _proto.getDimensions = function getDimensions() {
- if (this.clientRect) {
- return this.clientRect;
- }
- var media = this.media;
- var boundsRect = {
- width: 0,
- height: 0
- };
- if (media) {
- var clientRect = media.getBoundingClientRect();
- boundsRect.width = clientRect.width;
- boundsRect.height = clientRect.height;
- if (!boundsRect.width && !boundsRect.height) {
- // When the media element has no width or height (equivalent to not being in the DOM),
- // then use its width and height attributes (media.width, media.height)
- boundsRect.width = clientRect.right - clientRect.left || media.width || 0;
- boundsRect.height = clientRect.bottom - clientRect.top || media.height || 0;
- }
- }
- this.clientRect = boundsRect;
- return boundsRect;
- };
- _proto.isLevelAllowed = function isLevelAllowed(level) {
- var restrictedLevels = this.restrictedLevels;
- return !restrictedLevels.some(function (restrictedLevel) {
- return level.bitrate === restrictedLevel.bitrate && level.width === restrictedLevel.width && level.height === restrictedLevel.height;
- });
- };
- CapLevelController.getMaxLevelByMediaSize = function getMaxLevelByMediaSize(levels, width, height) {
- if (!(levels != null && levels.length)) {
- return -1;
- }
-
- // Levels can have the same dimensions but differing bandwidths - since levels are ordered, we can look to the next
- // to determine whether we've chosen the greatest bandwidth for the media's dimensions
- var atGreatestBandwidth = function atGreatestBandwidth(curLevel, nextLevel) {
- if (!nextLevel) {
- return true;
- }
- return curLevel.width !== nextLevel.width || curLevel.height !== nextLevel.height;
- };
-
- // If we run through the loop without breaking, the media's dimensions are greater than every level, so default to
- // the max level
- var maxLevelIndex = levels.length - 1;
- // Prevent changes in aspect-ratio from causing capping to toggle back and forth
- var squareSize = Math.max(width, height);
- for (var i = 0; i < levels.length; i += 1) {
- var level = levels[i];
- if ((level.width >= squareSize || level.height >= squareSize) && atGreatestBandwidth(level, levels[i + 1])) {
- maxLevelIndex = i;
- break;
- }
- }
- return maxLevelIndex;
- };
- _createClass(CapLevelController, [{
- key: "mediaWidth",
- get: function get() {
- return this.getDimensions().width * this.contentScaleFactor;
- }
- }, {
- key: "mediaHeight",
- get: function get() {
- return this.getDimensions().height * this.contentScaleFactor;
- }
- }, {
- key: "contentScaleFactor",
- get: function get() {
- var pixelRatio = 1;
- if (!this.hls.config.ignoreDevicePixelRatio) {
- try {
- pixelRatio = self.devicePixelRatio;
- } catch (e) {
- /* no-op */
- }
- }
- return pixelRatio;
- }
- }]);
- return CapLevelController;
- }();
-
- var FPSController = /*#__PURE__*/function () {
- function FPSController(hls) {
- this.hls = void 0;
- this.isVideoPlaybackQualityAvailable = false;
- this.timer = void 0;
- this.media = null;
- this.lastTime = void 0;
- this.lastDroppedFrames = 0;
- this.lastDecodedFrames = 0;
- // stream controller must be provided as a dependency!
- this.streamController = void 0;
- this.hls = hls;
- this.registerListeners();
- }
- var _proto = FPSController.prototype;
- _proto.setStreamController = function setStreamController(streamController) {
- this.streamController = streamController;
- };
- _proto.registerListeners = function registerListeners() {
- this.hls.on(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
- };
- _proto.unregisterListeners = function unregisterListeners() {
- this.hls.off(Events.MEDIA_ATTACHING, this.onMediaAttaching, this);
- };
- _proto.destroy = function destroy() {
- if (this.timer) {
- clearInterval(this.timer);
- }
- this.unregisterListeners();
- this.isVideoPlaybackQualityAvailable = false;
- this.media = null;
- };
- _proto.onMediaAttaching = function onMediaAttaching(event, data) {
- var config = this.hls.config;
- if (config.capLevelOnFPSDrop) {
- var media = data.media instanceof self.HTMLVideoElement ? data.media : null;
- this.media = media;
- if (media && typeof media.getVideoPlaybackQuality === 'function') {
- this.isVideoPlaybackQualityAvailable = true;
- }
- self.clearInterval(this.timer);
- this.timer = self.setInterval(this.checkFPSInterval.bind(this), config.fpsDroppedMonitoringPeriod);
- }
- };
- _proto.checkFPS = function checkFPS(video, decodedFrames, droppedFrames) {
- var currentTime = performance.now();
- if (decodedFrames) {
- if (this.lastTime) {
- var currentPeriod = currentTime - this.lastTime;
- var currentDropped = droppedFrames - this.lastDroppedFrames;
- var currentDecoded = decodedFrames - this.lastDecodedFrames;
- var droppedFPS = 1000 * currentDropped / currentPeriod;
- var hls = this.hls;
- hls.trigger(Events.FPS_DROP, {
- currentDropped: currentDropped,
- currentDecoded: currentDecoded,
- totalDroppedFrames: droppedFrames
- });
- if (droppedFPS > 0) {
- // logger.log('checkFPS : droppedFPS/decodedFPS:' + droppedFPS/(1000 * currentDecoded / currentPeriod));
- if (currentDropped > hls.config.fpsDroppedMonitoringThreshold * currentDecoded) {
- var currentLevel = hls.currentLevel;
- logger.warn('drop FPS ratio greater than max allowed value for currentLevel: ' + currentLevel);
- if (currentLevel > 0 && (hls.autoLevelCapping === -1 || hls.autoLevelCapping >= currentLevel)) {
- currentLevel = currentLevel - 1;
- hls.trigger(Events.FPS_DROP_LEVEL_CAPPING, {
- level: currentLevel,
- droppedLevel: hls.currentLevel
- });
- hls.autoLevelCapping = currentLevel;
- this.streamController.nextLevelSwitch();
- }
- }
- }
- }
- this.lastTime = currentTime;
- this.lastDroppedFrames = droppedFrames;
- this.lastDecodedFrames = decodedFrames;
- }
- };
- _proto.checkFPSInterval = function checkFPSInterval() {
- var video = this.media;
- if (video) {
- if (this.isVideoPlaybackQualityAvailable) {
- var videoPlaybackQuality = video.getVideoPlaybackQuality();
- this.checkFPS(video, videoPlaybackQuality.totalVideoFrames, videoPlaybackQuality.droppedVideoFrames);
- } else {
- // HTMLVideoElement doesn't include the webkit types
- this.checkFPS(video, video.webkitDecodedFrameCount, video.webkitDroppedFrameCount);
- }
- }
- };
- return FPSController;
- }();
-
- var LOGGER_PREFIX = '[eme]';
- /**
- * Controller to deal with encrypted media extensions (EME)
- * @see https://developer.mozilla.org/en-US/docs/Web/API/Encrypted_Media_Extensions_API
- *
- * @class
- * @constructor
- */
- var EMEController = /*#__PURE__*/function () {
- function EMEController(hls) {
- this.hls = void 0;
- this.config = void 0;
- this.media = null;
- this.keyFormatPromise = null;
- this.keySystemAccessPromises = {};
- this._requestLicenseFailureCount = 0;
- this.mediaKeySessions = [];
- this.keyIdToKeySessionPromise = {};
- this.setMediaKeysQueue = EMEController.CDMCleanupPromise ? [EMEController.CDMCleanupPromise] : [];
- this.onMediaEncrypted = this._onMediaEncrypted.bind(this);
- this.onWaitingForKey = this._onWaitingForKey.bind(this);
- this.debug = logger.debug.bind(logger, LOGGER_PREFIX);
- this.log = logger.log.bind(logger, LOGGER_PREFIX);
- this.warn = logger.warn.bind(logger, LOGGER_PREFIX);
- this.error = logger.error.bind(logger, LOGGER_PREFIX);
- this.hls = hls;
- this.config = hls.config;
- this.registerListeners();
- }
- var _proto = EMEController.prototype;
- _proto.destroy = function destroy() {
- this.unregisterListeners();
- this.onMediaDetached();
- // Remove any references that could be held in config options or callbacks
- var config = this.config;
- config.requestMediaKeySystemAccessFunc = null;
- config.licenseXhrSetup = config.licenseResponseCallback = undefined;
- config.drmSystems = config.drmSystemOptions = {};
- // @ts-ignore
- this.hls = this.onMediaEncrypted = this.onWaitingForKey = this.keyIdToKeySessionPromise = null;
- // @ts-ignore
- this.config = null;
- };
- _proto.registerListeners = function registerListeners() {
- this.hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- this.hls.on(Events.MEDIA_DETACHED, this.onMediaDetached, this);
- this.hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- this.hls.on(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
- };
- _proto.unregisterListeners = function unregisterListeners() {
- this.hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- this.hls.off(Events.MEDIA_DETACHED, this.onMediaDetached, this);
- this.hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- this.hls.off(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
- };
- _proto.getLicenseServerUrl = function getLicenseServerUrl(keySystem) {
- var _this$config = this.config,
- drmSystems = _this$config.drmSystems,
- widevineLicenseUrl = _this$config.widevineLicenseUrl;
- var keySystemConfiguration = drmSystems[keySystem];
- if (keySystemConfiguration) {
- return keySystemConfiguration.licenseUrl;
- }
-
- // For backward compatibility
- if (keySystem === KeySystems.WIDEVINE && widevineLicenseUrl) {
- return widevineLicenseUrl;
- }
- throw new Error("no license server URL configured for key-system \"" + keySystem + "\"");
- };
- _proto.getServerCertificateUrl = function getServerCertificateUrl(keySystem) {
- var drmSystems = this.config.drmSystems;
- var keySystemConfiguration = drmSystems[keySystem];
- if (keySystemConfiguration) {
- return keySystemConfiguration.serverCertificateUrl;
- } else {
- this.log("No Server Certificate in config.drmSystems[\"" + keySystem + "\"]");
- }
- };
- _proto.attemptKeySystemAccess = function attemptKeySystemAccess(keySystemsToAttempt) {
- var _this = this;
- var levels = this.hls.levels;
- var uniqueCodec = function uniqueCodec(value, i, a) {
- return !!value && a.indexOf(value) === i;
- };
- var audioCodecs = levels.map(function (level) {
- return level.audioCodec;
- }).filter(uniqueCodec);
- var videoCodecs = levels.map(function (level) {
- return level.videoCodec;
- }).filter(uniqueCodec);
- if (audioCodecs.length + videoCodecs.length === 0) {
- videoCodecs.push('avc1.42e01e');
- }
- return new Promise(function (resolve, reject) {
- var attempt = function attempt(keySystems) {
- var keySystem = keySystems.shift();
- _this.getMediaKeysPromise(keySystem, audioCodecs, videoCodecs).then(function (mediaKeys) {
- return resolve({
- keySystem: keySystem,
- mediaKeys: mediaKeys
- });
- }).catch(function (error) {
- if (keySystems.length) {
- attempt(keySystems);
- } else if (error instanceof EMEKeyError) {
- reject(error);
- } else {
- reject(new EMEKeyError({
- type: ErrorTypes.KEY_SYSTEM_ERROR,
- details: ErrorDetails.KEY_SYSTEM_NO_ACCESS,
- error: error,
- fatal: true
- }, error.message));
- }
- });
- };
- attempt(keySystemsToAttempt);
- });
- };
- _proto.requestMediaKeySystemAccess = function requestMediaKeySystemAccess$1(keySystem, supportedConfigurations) {
- var requestMediaKeySystemAccessFunc = this.config.requestMediaKeySystemAccessFunc;
- if (!(typeof requestMediaKeySystemAccessFunc === 'function')) {
- var errMessage = "Configured requestMediaKeySystemAccess is not a function " + requestMediaKeySystemAccessFunc;
- if (requestMediaKeySystemAccess === null && self.location.protocol === 'http:') {
- errMessage = "navigator.requestMediaKeySystemAccess is not available over insecure protocol " + location.protocol;
- }
- return Promise.reject(new Error(errMessage));
- }
- return requestMediaKeySystemAccessFunc(keySystem, supportedConfigurations);
- };
- _proto.getMediaKeysPromise = function getMediaKeysPromise(keySystem, audioCodecs, videoCodecs) {
- var _this2 = this;
- // This can throw, but is caught in event handler callpath
- var mediaKeySystemConfigs = getSupportedMediaKeySystemConfigurations(keySystem, audioCodecs, videoCodecs, this.config.drmSystemOptions);
- var keySystemAccessPromises = this.keySystemAccessPromises[keySystem];
- var keySystemAccess = keySystemAccessPromises == null ? void 0 : keySystemAccessPromises.keySystemAccess;
- if (!keySystemAccess) {
- this.log("Requesting encrypted media \"" + keySystem + "\" key-system access with config: " + JSON.stringify(mediaKeySystemConfigs));
- keySystemAccess = this.requestMediaKeySystemAccess(keySystem, mediaKeySystemConfigs);
- var _keySystemAccessPromises = this.keySystemAccessPromises[keySystem] = {
- keySystemAccess: keySystemAccess
- };
- keySystemAccess.catch(function (error) {
- _this2.log("Failed to obtain access to key-system \"" + keySystem + "\": " + error);
- });
- return keySystemAccess.then(function (mediaKeySystemAccess) {
- _this2.log("Access for key-system \"" + mediaKeySystemAccess.keySystem + "\" obtained");
- var certificateRequest = _this2.fetchServerCertificate(keySystem);
- _this2.log("Create media-keys for \"" + keySystem + "\"");
- _keySystemAccessPromises.mediaKeys = mediaKeySystemAccess.createMediaKeys().then(function (mediaKeys) {
- _this2.log("Media-keys created for \"" + keySystem + "\"");
- return certificateRequest.then(function (certificate) {
- if (certificate) {
- return _this2.setMediaKeysServerCertificate(mediaKeys, keySystem, certificate);
- }
- return mediaKeys;
- });
- });
- _keySystemAccessPromises.mediaKeys.catch(function (error) {
- _this2.error("Failed to create media-keys for \"" + keySystem + "\"}: " + error);
- });
- return _keySystemAccessPromises.mediaKeys;
- });
- }
- return keySystemAccess.then(function () {
- return keySystemAccessPromises.mediaKeys;
- });
- };
- _proto.createMediaKeySessionContext = function createMediaKeySessionContext(_ref) {
- var decryptdata = _ref.decryptdata,
- keySystem = _ref.keySystem,
- mediaKeys = _ref.mediaKeys;
- this.log("Creating key-system session \"" + keySystem + "\" keyId: " + Hex.hexDump(decryptdata.keyId || []));
- var mediaKeysSession = mediaKeys.createSession();
- var mediaKeySessionContext = {
- decryptdata: decryptdata,
- keySystem: keySystem,
- mediaKeys: mediaKeys,
- mediaKeysSession: mediaKeysSession,
- keyStatus: 'status-pending'
- };
- this.mediaKeySessions.push(mediaKeySessionContext);
- return mediaKeySessionContext;
- };
- _proto.renewKeySession = function renewKeySession(mediaKeySessionContext) {
- var decryptdata = mediaKeySessionContext.decryptdata;
- if (decryptdata.pssh) {
- var keySessionContext = this.createMediaKeySessionContext(mediaKeySessionContext);
- var _keyId = this.getKeyIdString(decryptdata);
- var scheme = 'cenc';
- this.keyIdToKeySessionPromise[_keyId] = this.generateRequestWithPreferredKeySession(keySessionContext, scheme, decryptdata.pssh, 'expired');
- } else {
- this.warn("Could not renew expired session. Missing pssh initData.");
- }
- this.removeSession(mediaKeySessionContext);
- };
- _proto.getKeyIdString = function getKeyIdString(decryptdata) {
- if (!decryptdata) {
- throw new Error('Could not read keyId of undefined decryptdata');
- }
- if (decryptdata.keyId === null) {
- throw new Error('keyId is null');
- }
- return Hex.hexDump(decryptdata.keyId);
- };
- _proto.updateKeySession = function updateKeySession(mediaKeySessionContext, data) {
- var _mediaKeySessionConte;
- var keySession = mediaKeySessionContext.mediaKeysSession;
- this.log("Updating key-session \"" + keySession.sessionId + "\" for keyID " + Hex.hexDump(((_mediaKeySessionConte = mediaKeySessionContext.decryptdata) == null ? void 0 : _mediaKeySessionConte.keyId) || []) + "\n } (data length: " + (data ? data.byteLength : data) + ")");
- return keySession.update(data);
- };
- _proto.selectKeySystemFormat = function selectKeySystemFormat(frag) {
- var keyFormats = Object.keys(frag.levelkeys || {});
- if (!this.keyFormatPromise) {
- this.log("Selecting key-system from fragment (sn: " + frag.sn + " " + frag.type + ": " + frag.level + ") key formats " + keyFormats.join(', '));
- this.keyFormatPromise = this.getKeyFormatPromise(keyFormats);
- }
- return this.keyFormatPromise;
- };
- _proto.getKeyFormatPromise = function getKeyFormatPromise(keyFormats) {
- var _this3 = this;
- return new Promise(function (resolve, reject) {
- var keySystemsInConfig = getKeySystemsForConfig(_this3.config);
- var keySystemsToAttempt = keyFormats.map(keySystemFormatToKeySystemDomain).filter(function (value) {
- return !!value && keySystemsInConfig.indexOf(value) !== -1;
- });
- return _this3.getKeySystemSelectionPromise(keySystemsToAttempt).then(function (_ref2) {
- var keySystem = _ref2.keySystem;
- var keySystemFormat = keySystemDomainToKeySystemFormat(keySystem);
- if (keySystemFormat) {
- resolve(keySystemFormat);
- } else {
- reject(new Error("Unable to find format for key-system \"" + keySystem + "\""));
- }
- }).catch(reject);
- });
- };
- _proto.loadKey = function loadKey(data) {
- var _this4 = this;
- var decryptdata = data.keyInfo.decryptdata;
- var keyId = this.getKeyIdString(decryptdata);
- var keyDetails = "(keyId: " + keyId + " format: \"" + decryptdata.keyFormat + "\" method: " + decryptdata.method + " uri: " + decryptdata.uri + ")";
- this.log("Starting session for key " + keyDetails);
- var keySessionContextPromise = this.keyIdToKeySessionPromise[keyId];
- if (!keySessionContextPromise) {
- keySessionContextPromise = this.keyIdToKeySessionPromise[keyId] = this.getKeySystemForKeyPromise(decryptdata).then(function (_ref3) {
- var keySystem = _ref3.keySystem,
- mediaKeys = _ref3.mediaKeys;
- _this4.throwIfDestroyed();
- _this4.log("Handle encrypted media sn: " + data.frag.sn + " " + data.frag.type + ": " + data.frag.level + " using key " + keyDetails);
- return _this4.attemptSetMediaKeys(keySystem, mediaKeys).then(function () {
- _this4.throwIfDestroyed();
- var keySessionContext = _this4.createMediaKeySessionContext({
- keySystem: keySystem,
- mediaKeys: mediaKeys,
- decryptdata: decryptdata
- });
- var scheme = 'cenc';
- return _this4.generateRequestWithPreferredKeySession(keySessionContext, scheme, decryptdata.pssh, 'playlist-key');
- });
- });
- keySessionContextPromise.catch(function (error) {
- return _this4.handleError(error);
- });
- }
- return keySessionContextPromise;
- };
- _proto.throwIfDestroyed = function throwIfDestroyed(message) {
- if (!this.hls) {
- throw new Error('invalid state');
- }
- };
- _proto.handleError = function handleError(error) {
- if (!this.hls) {
- return;
- }
- this.error(error.message);
- if (error instanceof EMEKeyError) {
- this.hls.trigger(Events.ERROR, error.data);
- } else {
- this.hls.trigger(Events.ERROR, {
- type: ErrorTypes.KEY_SYSTEM_ERROR,
- details: ErrorDetails.KEY_SYSTEM_NO_KEYS,
- error: error,
- fatal: true
- });
- }
- };
- _proto.getKeySystemForKeyPromise = function getKeySystemForKeyPromise(decryptdata) {
- var keyId = this.getKeyIdString(decryptdata);
- var mediaKeySessionContext = this.keyIdToKeySessionPromise[keyId];
- if (!mediaKeySessionContext) {
- var keySystem = keySystemFormatToKeySystemDomain(decryptdata.keyFormat);
- var keySystemsToAttempt = keySystem ? [keySystem] : getKeySystemsForConfig(this.config);
- return this.attemptKeySystemAccess(keySystemsToAttempt);
- }
- return mediaKeySessionContext;
- };
- _proto.getKeySystemSelectionPromise = function getKeySystemSelectionPromise(keySystemsToAttempt) {
- if (!keySystemsToAttempt.length) {
- keySystemsToAttempt = getKeySystemsForConfig(this.config);
- }
- if (keySystemsToAttempt.length === 0) {
- throw new EMEKeyError({
- type: ErrorTypes.KEY_SYSTEM_ERROR,
- details: ErrorDetails.KEY_SYSTEM_NO_CONFIGURED_LICENSE,
- fatal: true
- }, "Missing key-system license configuration options " + JSON.stringify({
- drmSystems: this.config.drmSystems
- }));
- }
- return this.attemptKeySystemAccess(keySystemsToAttempt);
- };
- _proto._onMediaEncrypted = function _onMediaEncrypted(event) {
- var _this5 = this;
- var initDataType = event.initDataType,
- initData = event.initData;
- var logMessage = "\"" + event.type + "\" event: init data type: \"" + initDataType + "\"";
- this.debug(logMessage);
-
- // Ignore event when initData is null
- if (initData === null) {
- return;
- }
- var keyId;
- var keySystemDomain;
- if (initDataType === 'sinf' && this.config.drmSystems[KeySystems.FAIRPLAY]) {
- // Match sinf keyId to playlist skd://keyId=
- var json = bin2str(new Uint8Array(initData));
- try {
- var sinf = base64Decode(JSON.parse(json).sinf);
- var tenc = parseSinf(new Uint8Array(sinf));
- if (!tenc) {
- throw new Error("'schm' box missing or not cbcs/cenc with schi > tenc");
- }
- keyId = tenc.subarray(8, 24);
- keySystemDomain = KeySystems.FAIRPLAY;
- } catch (error) {
- this.warn(logMessage + " Failed to parse sinf: " + error);
- return;
- }
- } else {
- // Support Widevine clear-lead key-session creation (otherwise depend on playlist keys)
- var psshResults = parseMultiPssh(initData);
- var psshInfo = psshResults.filter(function (pssh) {
- return pssh.systemId === KeySystemIds.WIDEVINE;
- })[0];
- if (!psshInfo) {
- if (psshResults.length === 0 || psshResults.some(function (pssh) {
- return !pssh.systemId;
- })) {
- this.warn(logMessage + " contains incomplete or invalid pssh data");
- } else {
- this.log("ignoring " + logMessage + " for " + psshResults.map(function (pssh) {
- return keySystemIdToKeySystemDomain(pssh.systemId);
- }).join(',') + " pssh data in favor of playlist keys");
- }
- return;
- }
- keySystemDomain = keySystemIdToKeySystemDomain(psshInfo.systemId);
- if (psshInfo.version === 0 && psshInfo.data) {
- var offset = psshInfo.data.length - 22;
- keyId = psshInfo.data.subarray(offset, offset + 16);
- }
- }
- if (!keySystemDomain || !keyId) {
- return;
- }
- var keyIdHex = Hex.hexDump(keyId);
- var keyIdToKeySessionPromise = this.keyIdToKeySessionPromise,
- mediaKeySessions = this.mediaKeySessions;
- var keySessionContextPromise = keyIdToKeySessionPromise[keyIdHex];
- var _loop = function _loop() {
- // Match playlist key
- var keyContext = mediaKeySessions[i];
- var decryptdata = keyContext.decryptdata;
- if (!decryptdata.keyId) {
- return 0; // continue
- }
- var oldKeyIdHex = Hex.hexDump(decryptdata.keyId);
- if (keyIdHex === oldKeyIdHex || decryptdata.uri.replace(/-/g, '').indexOf(keyIdHex) !== -1) {
- keySessionContextPromise = keyIdToKeySessionPromise[oldKeyIdHex];
- if (decryptdata.pssh) {
- return 1; // break
- }
- delete keyIdToKeySessionPromise[oldKeyIdHex];
- decryptdata.pssh = new Uint8Array(initData);
- decryptdata.keyId = keyId;
- keySessionContextPromise = keyIdToKeySessionPromise[keyIdHex] = keySessionContextPromise.then(function () {
- return _this5.generateRequestWithPreferredKeySession(keyContext, initDataType, initData, 'encrypted-event-key-match');
- });
- return 1; // break
- }
- },
- _ret;
- for (var i = 0; i < mediaKeySessions.length; i++) {
- _ret = _loop();
- if (_ret === 0) continue;
- if (_ret === 1) break;
- }
- if (!keySessionContextPromise) {
- // Clear-lead key (not encountered in playlist)
- keySessionContextPromise = keyIdToKeySessionPromise[keyIdHex] = this.getKeySystemSelectionPromise([keySystemDomain]).then(function (_ref4) {
- var _keySystemToKeySystem;
- var keySystem = _ref4.keySystem,
- mediaKeys = _ref4.mediaKeys;
- _this5.throwIfDestroyed();
- var decryptdata = new LevelKey('ISO-23001-7', keyIdHex, (_keySystemToKeySystem = keySystemDomainToKeySystemFormat(keySystem)) != null ? _keySystemToKeySystem : '');
- decryptdata.pssh = new Uint8Array(initData);
- decryptdata.keyId = keyId;
- return _this5.attemptSetMediaKeys(keySystem, mediaKeys).then(function () {
- _this5.throwIfDestroyed();
- var keySessionContext = _this5.createMediaKeySessionContext({
- decryptdata: decryptdata,
- keySystem: keySystem,
- mediaKeys: mediaKeys
- });
- return _this5.generateRequestWithPreferredKeySession(keySessionContext, initDataType, initData, 'encrypted-event-no-match');
- });
- });
- }
- keySessionContextPromise.catch(function (error) {
- return _this5.handleError(error);
- });
- };
- _proto._onWaitingForKey = function _onWaitingForKey(event) {
- this.log("\"" + event.type + "\" event");
- };
- _proto.attemptSetMediaKeys = function attemptSetMediaKeys(keySystem, mediaKeys) {
- var _this6 = this;
- var queue = this.setMediaKeysQueue.slice();
- this.log("Setting media-keys for \"" + keySystem + "\"");
- // Only one setMediaKeys() can run at one time, and multiple setMediaKeys() operations
- // can be queued for execution for multiple key sessions.
- var setMediaKeysPromise = Promise.all(queue).then(function () {
- if (!_this6.media) {
- throw new Error('Attempted to set mediaKeys without media element attached');
- }
- return _this6.media.setMediaKeys(mediaKeys);
- });
- this.setMediaKeysQueue.push(setMediaKeysPromise);
- return setMediaKeysPromise.then(function () {
- _this6.log("Media-keys set for \"" + keySystem + "\"");
- queue.push(setMediaKeysPromise);
- _this6.setMediaKeysQueue = _this6.setMediaKeysQueue.filter(function (p) {
- return queue.indexOf(p) === -1;
- });
- });
- };
- _proto.generateRequestWithPreferredKeySession = function generateRequestWithPreferredKeySession(context, initDataType, initData, reason) {
- var _this$config$drmSyste,
- _this$config$drmSyste2,
- _this7 = this;
- var generateRequestFilter = (_this$config$drmSyste = this.config.drmSystems) == null ? void 0 : (_this$config$drmSyste2 = _this$config$drmSyste[context.keySystem]) == null ? void 0 : _this$config$drmSyste2.generateRequest;
- if (generateRequestFilter) {
- try {
- var mappedInitData = generateRequestFilter.call(this.hls, initDataType, initData, context);
- if (!mappedInitData) {
- throw new Error('Invalid response from configured generateRequest filter');
- }
- initDataType = mappedInitData.initDataType;
- initData = context.decryptdata.pssh = mappedInitData.initData ? new Uint8Array(mappedInitData.initData) : null;
- } catch (error) {
- var _this$hls;
- this.warn(error.message);
- if ((_this$hls = this.hls) != null && _this$hls.config.debug) {
- throw error;
- }
- }
- }
- if (initData === null) {
- this.log("Skipping key-session request for \"" + reason + "\" (no initData)");
- return Promise.resolve(context);
- }
- var keyId = this.getKeyIdString(context.decryptdata);
- this.log("Generating key-session request for \"" + reason + "\": " + keyId + " (init data type: " + initDataType + " length: " + (initData ? initData.byteLength : null) + ")");
- var licenseStatus = new EventEmitter();
- var onmessage = context._onmessage = function (event) {
- var keySession = context.mediaKeysSession;
- if (!keySession) {
- licenseStatus.emit('error', new Error('invalid state'));
- return;
- }
- var messageType = event.messageType,
- message = event.message;
- _this7.log("\"" + messageType + "\" message event for session \"" + keySession.sessionId + "\" message size: " + message.byteLength);
- if (messageType === 'license-request' || messageType === 'license-renewal') {
- _this7.renewLicense(context, message).catch(function (error) {
- _this7.handleError(error);
- licenseStatus.emit('error', error);
- });
- } else if (messageType === 'license-release') {
- if (context.keySystem === KeySystems.FAIRPLAY) {
- _this7.updateKeySession(context, strToUtf8array('acknowledged'));
- _this7.removeSession(context);
- }
- } else {
- _this7.warn("unhandled media key message type \"" + messageType + "\"");
- }
- };
- var onkeystatuseschange = context._onkeystatuseschange = function (event) {
- var keySession = context.mediaKeysSession;
- if (!keySession) {
- licenseStatus.emit('error', new Error('invalid state'));
- return;
- }
- _this7.onKeyStatusChange(context);
- var keyStatus = context.keyStatus;
- licenseStatus.emit('keyStatus', keyStatus);
- if (keyStatus === 'expired') {
- _this7.warn(context.keySystem + " expired for key " + keyId);
- _this7.renewKeySession(context);
- }
- };
- context.mediaKeysSession.addEventListener('message', onmessage);
- context.mediaKeysSession.addEventListener('keystatuseschange', onkeystatuseschange);
- var keyUsablePromise = new Promise(function (resolve, reject) {
- licenseStatus.on('error', reject);
- licenseStatus.on('keyStatus', function (keyStatus) {
- if (keyStatus.startsWith('usable')) {
- resolve();
- } else if (keyStatus === 'output-restricted') {
- reject(new EMEKeyError({
- type: ErrorTypes.KEY_SYSTEM_ERROR,
- details: ErrorDetails.KEY_SYSTEM_STATUS_OUTPUT_RESTRICTED,
- fatal: false
- }, 'HDCP level output restricted'));
- } else if (keyStatus === 'internal-error') {
- reject(new EMEKeyError({
- type: ErrorTypes.KEY_SYSTEM_ERROR,
- details: ErrorDetails.KEY_SYSTEM_STATUS_INTERNAL_ERROR,
- fatal: true
- }, "key status changed to \"" + keyStatus + "\""));
- } else if (keyStatus === 'expired') {
- reject(new Error('key expired while generating request'));
- } else {
- _this7.warn("unhandled key status change \"" + keyStatus + "\"");
- }
- });
- });
- return context.mediaKeysSession.generateRequest(initDataType, initData).then(function () {
- var _context$mediaKeysSes;
- _this7.log("Request generated for key-session \"" + ((_context$mediaKeysSes = context.mediaKeysSession) == null ? void 0 : _context$mediaKeysSes.sessionId) + "\" keyId: " + keyId);
- }).catch(function (error) {
- throw new EMEKeyError({
- type: ErrorTypes.KEY_SYSTEM_ERROR,
- details: ErrorDetails.KEY_SYSTEM_NO_SESSION,
- error: error,
- fatal: false
- }, "Error generating key-session request: " + error);
- }).then(function () {
- return keyUsablePromise;
- }).catch(function (error) {
- licenseStatus.removeAllListeners();
- _this7.removeSession(context);
- throw error;
- }).then(function () {
- licenseStatus.removeAllListeners();
- return context;
- });
- };
- _proto.onKeyStatusChange = function onKeyStatusChange(mediaKeySessionContext) {
- var _this8 = this;
- mediaKeySessionContext.mediaKeysSession.keyStatuses.forEach(function (status, keyId) {
- _this8.log("key status change \"" + status + "\" for keyStatuses keyId: " + Hex.hexDump('buffer' in keyId ? new Uint8Array(keyId.buffer, keyId.byteOffset, keyId.byteLength) : new Uint8Array(keyId)) + " session keyId: " + Hex.hexDump(new Uint8Array(mediaKeySessionContext.decryptdata.keyId || [])) + " uri: " + mediaKeySessionContext.decryptdata.uri);
- mediaKeySessionContext.keyStatus = status;
- });
- };
- _proto.fetchServerCertificate = function fetchServerCertificate(keySystem) {
- var config = this.config;
- var Loader = config.loader;
- var certLoader = new Loader(config);
- var url = this.getServerCertificateUrl(keySystem);
- if (!url) {
- return Promise.resolve();
- }
- this.log("Fetching server certificate for \"" + keySystem + "\"");
- return new Promise(function (resolve, reject) {
- var loaderContext = {
- responseType: 'arraybuffer',
- url: url
- };
- var loadPolicy = config.certLoadPolicy.default;
- var loaderConfig = {
- loadPolicy: loadPolicy,
- timeout: loadPolicy.maxLoadTimeMs,
- maxRetry: 0,
- retryDelay: 0,
- maxRetryDelay: 0
- };
- var loaderCallbacks = {
- onSuccess: function onSuccess(response, stats, context, networkDetails) {
- resolve(response.data);
- },
- onError: function onError(response, contex, networkDetails, stats) {
- reject(new EMEKeyError({
- type: ErrorTypes.KEY_SYSTEM_ERROR,
- details: ErrorDetails.KEY_SYSTEM_SERVER_CERTIFICATE_REQUEST_FAILED,
- fatal: true,
- networkDetails: networkDetails,
- response: _objectSpread2({
- url: loaderContext.url,
- data: undefined
- }, response)
- }, "\"" + keySystem + "\" certificate request failed (" + url + "). Status: " + response.code + " (" + response.text + ")"));
- },
- onTimeout: function onTimeout(stats, context, networkDetails) {
- reject(new EMEKeyError({
- type: ErrorTypes.KEY_SYSTEM_ERROR,
- details: ErrorDetails.KEY_SYSTEM_SERVER_CERTIFICATE_REQUEST_FAILED,
- fatal: true,
- networkDetails: networkDetails,
- response: {
- url: loaderContext.url,
- data: undefined
- }
- }, "\"" + keySystem + "\" certificate request timed out (" + url + ")"));
- },
- onAbort: function onAbort(stats, context, networkDetails) {
- reject(new Error('aborted'));
- }
- };
- certLoader.load(loaderContext, loaderConfig, loaderCallbacks);
- });
- };
- _proto.setMediaKeysServerCertificate = function setMediaKeysServerCertificate(mediaKeys, keySystem, cert) {
- var _this9 = this;
- return new Promise(function (resolve, reject) {
- mediaKeys.setServerCertificate(cert).then(function (success) {
- _this9.log("setServerCertificate " + (success ? 'success' : 'not supported by CDM') + " (" + (cert == null ? void 0 : cert.byteLength) + ") on \"" + keySystem + "\"");
- resolve(mediaKeys);
- }).catch(function (error) {
- reject(new EMEKeyError({
- type: ErrorTypes.KEY_SYSTEM_ERROR,
- details: ErrorDetails.KEY_SYSTEM_SERVER_CERTIFICATE_UPDATE_FAILED,
- error: error,
- fatal: true
- }, error.message));
- });
- });
- };
- _proto.renewLicense = function renewLicense(context, keyMessage) {
- var _this10 = this;
- return this.requestLicense(context, new Uint8Array(keyMessage)).then(function (data) {
- return _this10.updateKeySession(context, new Uint8Array(data)).catch(function (error) {
- throw new EMEKeyError({
- type: ErrorTypes.KEY_SYSTEM_ERROR,
- details: ErrorDetails.KEY_SYSTEM_SESSION_UPDATE_FAILED,
- error: error,
- fatal: true
- }, error.message);
- });
- });
- };
- _proto.unpackPlayReadyKeyMessage = function unpackPlayReadyKeyMessage(xhr, licenseChallenge) {
- // On Edge, the raw license message is UTF-16-encoded XML. We need
- // to unpack the Challenge element (base64-encoded string containing the
- // actual license request) and any HttpHeader elements (sent as request
- // headers).
- // For PlayReady CDMs, we need to dig the Challenge out of the XML.
- var xmlString = String.fromCharCode.apply(null, new Uint16Array(licenseChallenge.buffer));
- if (!xmlString.includes('PlayReadyKeyMessage')) {
- // This does not appear to be a wrapped message as on Edge. Some
- // clients do not need this unwrapping, so we will assume this is one of
- // them. Note that "xml" at this point probably looks like random
- // garbage, since we interpreted UTF-8 as UTF-16.
- xhr.setRequestHeader('Content-Type', 'text/xml; charset=utf-8');
- return licenseChallenge;
- }
- var keyMessageXml = new DOMParser().parseFromString(xmlString, 'application/xml');
- // Set request headers.
- var headers = keyMessageXml.querySelectorAll('HttpHeader');
- if (headers.length > 0) {
- var header;
- for (var i = 0, len = headers.length; i < len; i++) {
- var _header$querySelector, _header$querySelector2;
- header = headers[i];
- var name = (_header$querySelector = header.querySelector('name')) == null ? void 0 : _header$querySelector.textContent;
- var _value = (_header$querySelector2 = header.querySelector('value')) == null ? void 0 : _header$querySelector2.textContent;
- if (name && _value) {
- xhr.setRequestHeader(name, _value);
- }
- }
- }
- var challengeElement = keyMessageXml.querySelector('Challenge');
- var challengeText = challengeElement == null ? void 0 : challengeElement.textContent;
- if (!challengeText) {
- throw new Error("Cannot find in key message");
- }
- return strToUtf8array(atob(challengeText));
- };
- _proto.setupLicenseXHR = function setupLicenseXHR(xhr, url, keysListItem, licenseChallenge) {
- var _this11 = this;
- var licenseXhrSetup = this.config.licenseXhrSetup;
- if (!licenseXhrSetup) {
- xhr.open('POST', url, true);
- return Promise.resolve({
- xhr: xhr,
- licenseChallenge: licenseChallenge
- });
- }
- return Promise.resolve().then(function () {
- if (!keysListItem.decryptdata) {
- throw new Error('Key removed');
- }
- return licenseXhrSetup.call(_this11.hls, xhr, url, keysListItem, licenseChallenge);
- }).catch(function (error) {
- if (!keysListItem.decryptdata) {
- // Key session removed. Cancel license request.
- throw error;
- }
- // let's try to open before running setup
- xhr.open('POST', url, true);
- return licenseXhrSetup.call(_this11.hls, xhr, url, keysListItem, licenseChallenge);
- }).then(function (licenseXhrSetupResult) {
- // if licenseXhrSetup did not yet call open, let's do it now
- if (!xhr.readyState) {
- xhr.open('POST', url, true);
- }
- var finalLicenseChallenge = licenseXhrSetupResult ? licenseXhrSetupResult : licenseChallenge;
- return {
- xhr: xhr,
- licenseChallenge: finalLicenseChallenge
- };
- });
- };
- _proto.requestLicense = function requestLicense(keySessionContext, licenseChallenge) {
- var _this12 = this;
- var keyLoadPolicy = this.config.keyLoadPolicy.default;
- return new Promise(function (resolve, reject) {
- var url = _this12.getLicenseServerUrl(keySessionContext.keySystem);
- _this12.log("Sending license request to URL: " + url);
- var xhr = new XMLHttpRequest();
- xhr.responseType = 'arraybuffer';
- xhr.onreadystatechange = function () {
- if (!_this12.hls || !keySessionContext.mediaKeysSession) {
- return reject(new Error('invalid state'));
- }
- if (xhr.readyState === 4) {
- if (xhr.status === 200) {
- _this12._requestLicenseFailureCount = 0;
- var data = xhr.response;
- _this12.log("License received " + (data instanceof ArrayBuffer ? data.byteLength : data));
- var licenseResponseCallback = _this12.config.licenseResponseCallback;
- if (licenseResponseCallback) {
- try {
- data = licenseResponseCallback.call(_this12.hls, xhr, url, keySessionContext);
- } catch (error) {
- _this12.error(error);
- }
- }
- resolve(data);
- } else {
- var retryConfig = keyLoadPolicy.errorRetry;
- var maxNumRetry = retryConfig ? retryConfig.maxNumRetry : 0;
- _this12._requestLicenseFailureCount++;
- if (_this12._requestLicenseFailureCount > maxNumRetry || xhr.status >= 400 && xhr.status < 500) {
- reject(new EMEKeyError({
- type: ErrorTypes.KEY_SYSTEM_ERROR,
- details: ErrorDetails.KEY_SYSTEM_LICENSE_REQUEST_FAILED,
- fatal: true,
- networkDetails: xhr,
- response: {
- url: url,
- data: undefined,
- code: xhr.status,
- text: xhr.statusText
- }
- }, "License Request XHR failed (" + url + "). Status: " + xhr.status + " (" + xhr.statusText + ")"));
- } else {
- var attemptsLeft = maxNumRetry - _this12._requestLicenseFailureCount + 1;
- _this12.warn("Retrying license request, " + attemptsLeft + " attempts left");
- _this12.requestLicense(keySessionContext, licenseChallenge).then(resolve, reject);
- }
- }
- }
- };
- if (keySessionContext.licenseXhr && keySessionContext.licenseXhr.readyState !== XMLHttpRequest.DONE) {
- keySessionContext.licenseXhr.abort();
- }
- keySessionContext.licenseXhr = xhr;
- _this12.setupLicenseXHR(xhr, url, keySessionContext, licenseChallenge).then(function (_ref5) {
- var xhr = _ref5.xhr,
- licenseChallenge = _ref5.licenseChallenge;
- if (keySessionContext.keySystem == KeySystems.PLAYREADY) {
- licenseChallenge = _this12.unpackPlayReadyKeyMessage(xhr, licenseChallenge);
- }
- xhr.send(licenseChallenge);
- });
- });
- };
- _proto.onMediaAttached = function onMediaAttached(event, data) {
- if (!this.config.emeEnabled) {
- return;
- }
- var media = data.media;
-
- // keep reference of media
- this.media = media;
- media.addEventListener('encrypted', this.onMediaEncrypted);
- media.addEventListener('waitingforkey', this.onWaitingForKey);
- };
- _proto.onMediaDetached = function onMediaDetached() {
- var _this13 = this;
- var media = this.media;
- var mediaKeysList = this.mediaKeySessions;
- if (media) {
- media.removeEventListener('encrypted', this.onMediaEncrypted);
- media.removeEventListener('waitingforkey', this.onWaitingForKey);
- this.media = null;
- }
- this._requestLicenseFailureCount = 0;
- this.setMediaKeysQueue = [];
- this.mediaKeySessions = [];
- this.keyIdToKeySessionPromise = {};
- LevelKey.clearKeyUriToKeyIdMap();
-
- // Close all sessions and remove media keys from the video element.
- var keySessionCount = mediaKeysList.length;
- EMEController.CDMCleanupPromise = Promise.all(mediaKeysList.map(function (mediaKeySessionContext) {
- return _this13.removeSession(mediaKeySessionContext);
- }).concat(media == null ? void 0 : media.setMediaKeys(null).catch(function (error) {
- _this13.log("Could not clear media keys: " + error);
- }))).then(function () {
- if (keySessionCount) {
- _this13.log('finished closing key sessions and clearing media keys');
- mediaKeysList.length = 0;
- }
- }).catch(function (error) {
- _this13.log("Could not close sessions and clear media keys: " + error);
- });
- };
- _proto.onManifestLoading = function onManifestLoading() {
- this.keyFormatPromise = null;
- };
- _proto.onManifestLoaded = function onManifestLoaded(event, _ref6) {
- var sessionKeys = _ref6.sessionKeys;
- if (!sessionKeys || !this.config.emeEnabled) {
- return;
- }
- if (!this.keyFormatPromise) {
- var keyFormats = sessionKeys.reduce(function (formats, sessionKey) {
- if (formats.indexOf(sessionKey.keyFormat) === -1) {
- formats.push(sessionKey.keyFormat);
- }
- return formats;
- }, []);
- this.log("Selecting key-system from session-keys " + keyFormats.join(', '));
- this.keyFormatPromise = this.getKeyFormatPromise(keyFormats);
- }
- };
- _proto.removeSession = function removeSession(mediaKeySessionContext) {
- var _this14 = this;
- var mediaKeysSession = mediaKeySessionContext.mediaKeysSession,
- licenseXhr = mediaKeySessionContext.licenseXhr;
- if (mediaKeysSession) {
- this.log("Remove licenses and keys and close session " + mediaKeysSession.sessionId);
- if (mediaKeySessionContext._onmessage) {
- mediaKeysSession.removeEventListener('message', mediaKeySessionContext._onmessage);
- mediaKeySessionContext._onmessage = undefined;
- }
- if (mediaKeySessionContext._onkeystatuseschange) {
- mediaKeysSession.removeEventListener('keystatuseschange', mediaKeySessionContext._onkeystatuseschange);
- mediaKeySessionContext._onkeystatuseschange = undefined;
- }
- if (licenseXhr && licenseXhr.readyState !== XMLHttpRequest.DONE) {
- licenseXhr.abort();
- }
- mediaKeySessionContext.mediaKeysSession = mediaKeySessionContext.decryptdata = mediaKeySessionContext.licenseXhr = undefined;
- var index = this.mediaKeySessions.indexOf(mediaKeySessionContext);
- if (index > -1) {
- this.mediaKeySessions.splice(index, 1);
- }
- return mediaKeysSession.remove().catch(function (error) {
- _this14.log("Could not remove session: " + error);
- }).then(function () {
- return mediaKeysSession.close();
- }).catch(function (error) {
- _this14.log("Could not close session: " + error);
- });
- }
- };
- return EMEController;
- }();
- EMEController.CDMCleanupPromise = void 0;
- var EMEKeyError = /*#__PURE__*/function (_Error) {
- _inheritsLoose(EMEKeyError, _Error);
- function EMEKeyError(data, message) {
- var _this15;
- _this15 = _Error.call(this, message) || this;
- _this15.data = void 0;
- data.error || (data.error = new Error(message));
- _this15.data = data;
- data.err = data.error;
- return _this15;
- }
- return EMEKeyError;
- }( /*#__PURE__*/_wrapNativeSuper(Error));
-
- /**
- * Common Media Object Type
- *
- * @group CMCD
- * @group CMSD
- *
- * @beta
- */
- var CmObjectType;
- (function (CmObjectType) {
- /**
- * text file, such as a manifest or playlist
- */
- CmObjectType["MANIFEST"] = "m";
- /**
- * audio only
- */
- CmObjectType["AUDIO"] = "a";
- /**
- * video only
- */
- CmObjectType["VIDEO"] = "v";
- /**
- * muxed audio and video
- */
- CmObjectType["MUXED"] = "av";
- /**
- * init segment
- */
- CmObjectType["INIT"] = "i";
- /**
- * caption or subtitle
- */
- CmObjectType["CAPTION"] = "c";
- /**
- * ISOBMFF timed text track
- */
- CmObjectType["TIMED_TEXT"] = "tt";
- /**
- * cryptographic key, license or certificate.
- */
- CmObjectType["KEY"] = "k";
- /**
- * other
- */
- CmObjectType["OTHER"] = "o";
- })(CmObjectType || (CmObjectType = {}));
-
- /**
- * Common Media Streaming Format
- *
- * @group CMCD
- * @group CMSD
- *
- * @beta
- */
- var CmStreamingFormat;
- (function (CmStreamingFormat) {
- /**
- * MPEG DASH
- */
- CmStreamingFormat["DASH"] = "d";
- /**
- * HTTP Live Streaming (HLS)
- */
- CmStreamingFormat["HLS"] = "h";
- /**
- * Smooth Streaming
- */
- CmStreamingFormat["SMOOTH"] = "s";
- /**
- * Other
- */
- CmStreamingFormat["OTHER"] = "o";
- })(CmStreamingFormat || (CmStreamingFormat = {}));
-
- /**
- * CMCD header fields.
- *
- * @group CMCD
- *
- * @beta
- */
- var CmcdHeaderField;
- (function (CmcdHeaderField) {
- /**
- * keys whose values vary with the object being requested.
- */
- CmcdHeaderField["OBJECT"] = "CMCD-Object";
- /**
- * keys whose values vary with each request.
- */
- CmcdHeaderField["REQUEST"] = "CMCD-Request";
- /**
- * keys whose values are expected to be invariant over the life of the session.
- */
- CmcdHeaderField["SESSION"] = "CMCD-Session";
- /**
- * keys whose values do not vary with every request or object.
- */
- CmcdHeaderField["STATUS"] = "CMCD-Status";
- })(CmcdHeaderField || (CmcdHeaderField = {}));
-
- var _CmcdHeaderMap;
- /**
- * The map of CMCD header fields to official CMCD keys.
- *
- * @internal
- *
- * @group CMCD
- */
- var CmcdHeaderMap = (_CmcdHeaderMap = {}, _CmcdHeaderMap[CmcdHeaderField.OBJECT] = ['br', 'd', 'ot', 'tb'], _CmcdHeaderMap[CmcdHeaderField.REQUEST] = ['bl', 'dl', 'mtp', 'nor', 'nrr', 'su'], _CmcdHeaderMap[CmcdHeaderField.SESSION] = ['cid', 'pr', 'sf', 'sid', 'st', 'v'], _CmcdHeaderMap[CmcdHeaderField.STATUS] = ['bs', 'rtp'], _CmcdHeaderMap);
-
- /**
- * Structured Field Item
- *
- * @group Structured Field
- *
- * @beta
- */
- var SfItem = function SfItem(value, params) {
- this.value = void 0;
- this.params = void 0;
- if (Array.isArray(value)) {
- value = value.map(function (v) {
- return v instanceof SfItem ? v : new SfItem(v);
- });
- }
- this.value = value;
- this.params = params;
- };
-
- /**
- * A class to represent structured field tokens when `Symbol` is not available.
- *
- * @group Structured Field
- *
- * @beta
- */
- var SfToken = function SfToken(description) {
- this.description = void 0;
- this.description = description;
- };
-
- var DICT = 'Dict';
-
- function format(value) {
- if (Array.isArray(value)) {
- return JSON.stringify(value);
- }
- if (value instanceof Map) {
- return 'Map{}';
- }
- if (value instanceof Set) {
- return 'Set{}';
- }
- if (typeof value === 'object') {
- return JSON.stringify(value);
- }
- return String(value);
- }
- function throwError(action, src, type, cause) {
- return new Error("failed to " + action + " \"" + format(src) + "\" as " + type, {
- cause: cause
- });
- }
-
- var BARE_ITEM = 'Bare Item';
-
- var BOOLEAN = 'Boolean';
-
- var BYTES = 'Byte Sequence';
-
- var DECIMAL = 'Decimal';
-
- var INTEGER = 'Integer';
-
- function isInvalidInt(value) {
- return value < -999999999999999 || 999999999999999 < value;
- }
-
- var STRING_REGEX = /[\x00-\x1f\x7f]+/; // eslint-disable-line no-control-regex
-
- var TOKEN = 'Token';
-
- var KEY = 'Key';
-
- function serializeError(src, type, cause) {
- return throwError('serialize', src, type, cause);
- }
-
- // 4.1.9. Serializing a Boolean
- //
- // Given a Boolean as input_boolean, return an ASCII string suitable for
- // use in a HTTP field value.
- //
- // 1. If input_boolean is not a boolean, fail serialization.
- //
- // 2. Let output be an empty string.
- //
- // 3. Append "?" to output.
- //
- // 4. If input_boolean is true, append "1" to output.
- //
- // 5. If input_boolean is false, append "0" to output.
- //
- // 6. Return output.
- function serializeBoolean(value) {
- if (typeof value !== 'boolean') {
- throw serializeError(value, BOOLEAN);
- }
- return value ? '?1' : '?0';
- }
-
- /**
- * Encodes binary data to base64
- *
- * @param binary - The binary data to encode
- * @returns The base64 encoded string
- *
- * @group Utils
- *
- * @beta
- */
- function base64encode(binary) {
- return btoa(String.fromCharCode.apply(String, binary));
- }
-
- // 4.1.8. Serializing a Byte Sequence
- //
- // Given a Byte Sequence as input_bytes, return an ASCII string suitable
- // for use in a HTTP field value.
- //
- // 1. If input_bytes is not a sequence of bytes, fail serialization.
- //
- // 2. Let output be an empty string.
- //
- // 3. Append ":" to output.
- //
- // 4. Append the result of base64-encoding input_bytes as per
- // [RFC4648], Section 4, taking account of the requirements below.
- //
- // 5. Append ":" to output.
- //
- // 6. Return output.
- //
- // The encoded data is required to be padded with "=", as per [RFC4648],
- // Section 3.2.
- //
- // Likewise, encoded data SHOULD have pad bits set to zero, as per
- // [RFC4648], Section 3.5, unless it is not possible to do so due to
- // implementation constraints.
- function serializeByteSequence(value) {
- if (ArrayBuffer.isView(value) === false) {
- throw serializeError(value, BYTES);
- }
- return ":" + base64encode(value) + ":";
- }
-
- // 4.1.4. Serializing an Integer
- //
- // Given an Integer as input_integer, return an ASCII string suitable
- // for use in a HTTP field value.
- //
- // 1. If input_integer is not an integer in the range of
- // -999,999,999,999,999 to 999,999,999,999,999 inclusive, fail
- // serialization.
- //
- // 2. Let output be an empty string.
- //
- // 3. If input_integer is less than (but not equal to) 0, append "-" to
- // output.
- //
- // 4. Append input_integer's numeric value represented in base 10 using
- // only decimal digits to output.
- //
- // 5. Return output.
- function serializeInteger(value) {
- if (isInvalidInt(value)) {
- throw serializeError(value, INTEGER);
- }
- return value.toString();
- }
-
- // 4.1.10. Serializing a Date
- //
- // Given a Date as input_integer, return an ASCII string suitable for
- // use in an HTTP field value.
- // 1. Let output be "@".
- // 2. Append to output the result of running Serializing an Integer
- // with input_date (Section 4.1.4).
- // 3. Return output.
- function serializeDate(value) {
- return "@" + serializeInteger(value.getTime() / 1000);
- }
-
- /**
- * This implements the rounding procedure described in step 2 of the "Serializing a Decimal" specification.
- * This rounding style is known as "even rounding", "banker's rounding", or "commercial rounding".
- *
- * @param value - The value to round
- * @param precision - The number of decimal places to round to
- * @returns The rounded value
- *
- * @group Utils
- *
- * @beta
- */
- function roundToEven(value, precision) {
- if (value < 0) {
- return -roundToEven(-value, precision);
- }
- var decimalShift = Math.pow(10, precision);
- var isEquidistant = Math.abs(value * decimalShift % 1 - 0.5) < Number.EPSILON;
- if (isEquidistant) {
- // If the tail of the decimal place is 'equidistant' we round to the nearest even value
- var flooredValue = Math.floor(value * decimalShift);
- return (flooredValue % 2 === 0 ? flooredValue : flooredValue + 1) / decimalShift;
- } else {
- // Otherwise, proceed as normal
- return Math.round(value * decimalShift) / decimalShift;
- }
- }
-
- // 4.1.5. Serializing a Decimal
- //
- // Given a decimal number as input_decimal, return an ASCII string
- // suitable for use in a HTTP field value.
- //
- // 1. If input_decimal is not a decimal number, fail serialization.
- //
- // 2. If input_decimal has more than three significant digits to the
- // right of the decimal point, round it to three decimal places,
- // rounding the final digit to the nearest value, or to the even
- // value if it is equidistant.
- //
- // 3. If input_decimal has more than 12 significant digits to the left
- // of the decimal point after rounding, fail serialization.
- //
- // 4. Let output be an empty string.
- //
- // 5. If input_decimal is less than (but not equal to) 0, append "-"
- // to output.
- //
- // 6. Append input_decimal's integer component represented in base 10
- // (using only decimal digits) to output; if it is zero, append
- // "0".
- //
- // 7. Append "." to output.
- //
- // 8. If input_decimal's fractional component is zero, append "0" to
- // output.
- //
- // 9. Otherwise, append the significant digits of input_decimal's
- // fractional component represented in base 10 (using only decimal
- // digits) to output.
- //
- // 10. Return output.
- function serializeDecimal(value) {
- var roundedValue = roundToEven(value, 3); // round to 3 decimal places
- if (Math.floor(Math.abs(roundedValue)).toString().length > 12) {
- throw serializeError(value, DECIMAL);
- }
- var stringValue = roundedValue.toString();
- return stringValue.includes('.') ? stringValue : stringValue + ".0";
- }
-
- var STRING = 'String';
-
- // 4.1.6. Serializing a String
- //
- // Given a String as input_string, return an ASCII string suitable for
- // use in a HTTP field value.
- //
- // 1. Convert input_string into a sequence of ASCII characters; if
- // conversion fails, fail serialization.
- //
- // 2. If input_string contains characters in the range %x00-1f or %x7f
- // (i.e., not in VCHAR or SP), fail serialization.
- //
- // 3. Let output be the string DQUOTE.
- //
- // 4. For each character char in input_string:
- //
- // 1. If char is "\" or DQUOTE:
- //
- // 1. Append "\" to output.
- //
- // 2. Append char to output.
- //
- // 5. Append DQUOTE to output.
- //
- // 6. Return output.
- function serializeString(value) {
- if (STRING_REGEX.test(value)) {
- throw serializeError(value, STRING);
- }
- return "\"" + value.replace(/\\/g, "\\\\").replace(/"/g, "\\\"") + "\"";
- }
-
- function symbolToStr(symbol) {
- return symbol.description || symbol.toString().slice(7, -1);
- }
-
- function serializeToken(token) {
- var value = symbolToStr(token);
- if (/^([a-zA-Z*])([!#$%&'*+\-.^_`|~\w:/]*)$/.test(value) === false) {
- throw serializeError(value, TOKEN);
- }
- return value;
- }
-
- // 4.1.3.1. Serializing a Bare Item
- //
- // Given an Item as input_item, return an ASCII string suitable for use
- // in a HTTP field value.
- //
- // 1. If input_item is an Integer, return the result of running
- // Serializing an Integer (Section 4.1.4) with input_item.
- //
- // 2. If input_item is a Decimal, return the result of running
- // Serializing a Decimal (Section 4.1.5) with input_item.
- //
- // 3. If input_item is a String, return the result of running
- // Serializing a String (Section 4.1.6) with input_item.
- //
- // 4. If input_item is a Token, return the result of running
- // Serializing a Token (Section 4.1.7) with input_item.
- //
- // 5. If input_item is a Boolean, return the result of running
- // Serializing a Boolean (Section 4.1.9) with input_item.
- //
- // 6. If input_item is a Byte Sequence, return the result of running
- // Serializing a Byte Sequence (Section 4.1.8) with input_item.
- //
- // 7. If input_item is a Date, return the result of running Serializing
- // a Date (Section 4.1.10) with input_item.
- //
- // 8. Otherwise, fail serialization.
- function serializeBareItem(value) {
- switch (typeof value) {
- case 'number':
- if (!isFiniteNumber(value)) {
- throw serializeError(value, BARE_ITEM);
- }
- if (Number.isInteger(value)) {
- return serializeInteger(value);
- }
- return serializeDecimal(value);
- case 'string':
- return serializeString(value);
- case 'symbol':
- return serializeToken(value);
- case 'boolean':
- return serializeBoolean(value);
- case 'object':
- if (value instanceof Date) {
- return serializeDate(value);
- }
- if (value instanceof Uint8Array) {
- return serializeByteSequence(value);
- }
- if (value instanceof SfToken) {
- return serializeToken(value);
- }
- default:
- // fail
- throw serializeError(value, BARE_ITEM);
- }
- }
-
- // 4.1.1.3. Serializing a Key
- //
- // Given a key as input_key, return an ASCII string suitable for use in
- // a HTTP field value.
- //
- // 1. Convert input_key into a sequence of ASCII characters; if
- // conversion fails, fail serialization.
- //
- // 2. If input_key contains characters not in lcalpha, DIGIT, "_", "-",
- // ".", or "*" fail serialization.
- //
- // 3. If the first character of input_key is not lcalpha or "*", fail
- // serialization.
- //
- // 4. Let output be an empty string.
- //
- // 5. Append input_key to output.
- //
- // 6. Return output.
- function serializeKey(value) {
- if (/^[a-z*][a-z0-9\-_.*]*$/.test(value) === false) {
- throw serializeError(value, KEY);
- }
- return value;
- }
-
- // 4.1.1.2. Serializing Parameters
- //
- // Given an ordered Dictionary as input_parameters (each member having a
- // param_name and a param_value), return an ASCII string suitable for
- // use in a HTTP field value.
- //
- // 1. Let output be an empty string.
- //
- // 2. For each param_name with a value of param_value in
- // input_parameters:
- //
- // 1. Append ";" to output.
- //
- // 2. Append the result of running Serializing a Key
- // (Section 4.1.1.3) with param_name to output.
- //
- // 3. If param_value is not Boolean true:
- //
- // 1. Append "=" to output.
- //
- // 2. Append the result of running Serializing a bare Item
- // (Section 4.1.3.1) with param_value to output.
- //
- // 3. Return output.
- function serializeParams(params) {
- if (params == null) {
- return '';
- }
- return Object.entries(params).map(function (_ref) {
- var key = _ref[0],
- value = _ref[1];
- if (value === true) {
- return ";" + serializeKey(key); // omit true
- }
- return ";" + serializeKey(key) + "=" + serializeBareItem(value);
- }).join('');
- }
-
- // 4.1.3. Serializing an Item
- //
- // Given an Item as bare_item and Parameters as item_parameters, return
- // an ASCII string suitable for use in a HTTP field value.
- //
- // 1. Let output be an empty string.
- //
- // 2. Append the result of running Serializing a Bare Item
- // Section 4.1.3.1 with bare_item to output.
- //
- // 3. Append the result of running Serializing Parameters
- // Section 4.1.1.2 with item_parameters to output.
- //
- // 4. Return output.
- function serializeItem(value) {
- if (value instanceof SfItem) {
- return "" + serializeBareItem(value.value) + serializeParams(value.params);
- } else {
- return serializeBareItem(value);
- }
- }
-
- // 4.1.1.1. Serializing an Inner List
- //
- // Given an array of (member_value, parameters) tuples as inner_list,
- // and parameters as list_parameters, return an ASCII string suitable
- // for use in a HTTP field value.
- //
- // 1. Let output be the string "(".
- //
- // 2. For each (member_value, parameters) of inner_list:
- //
- // 1. Append the result of running Serializing an Item
- // (Section 4.1.3) with (member_value, parameters) to output.
- //
- // 2. If more values remain in inner_list, append a single SP to
- // output.
- //
- // 3. Append ")" to output.
- //
- // 4. Append the result of running Serializing Parameters
- // (Section 4.1.1.2) with list_parameters to output.
- //
- // 5. Return output.
- function serializeInnerList(value) {
- return "(" + value.value.map(serializeItem).join(' ') + ")" + serializeParams(value.params);
- }
-
- // 4.1.2. Serializing a Dictionary
- //
- // Given an ordered Dictionary as input_dictionary (each member having a
- // member_name and a tuple value of (member_value, parameters)), return
- // an ASCII string suitable for use in a HTTP field value.
- //
- // 1. Let output be an empty string.
- //
- // 2. For each member_name with a value of (member_value, parameters)
- // in input_dictionary:
- //
- // 1. Append the result of running Serializing a Key
- // (Section 4.1.1.3) with member's member_name to output.
- //
- // 2. If member_value is Boolean true:
- //
- // 1. Append the result of running Serializing Parameters
- // (Section 4.1.1.2) with parameters to output.
- //
- // 3. Otherwise:
- //
- // 1. Append "=" to output.
- //
- // 2. If member_value is an array, append the result of running
- // Serializing an Inner List (Section 4.1.1.1) with
- // (member_value, parameters) to output.
- //
- // 3. Otherwise, append the result of running Serializing an
- // Item (Section 4.1.3) with (member_value, parameters) to
- // output.
- //
- // 4. If more members remain in input_dictionary:
- //
- // 1. Append "," to output.
- //
- // 2. Append a single SP to output.
- //
- // 3. Return output.
- function serializeDict(dict, options) {
- var _options;
- if (options === void 0) {
- options = {
- whitespace: true
- };
- }
- if (typeof dict !== 'object') {
- throw serializeError(dict, DICT);
- }
- var entries = dict instanceof Map ? dict.entries() : Object.entries(dict);
- var optionalWhiteSpace = (_options = options) != null && _options.whitespace ? ' ' : '';
- return Array.from(entries).map(function (_ref) {
- var key = _ref[0],
- item = _ref[1];
- if (item instanceof SfItem === false) {
- item = new SfItem(item);
- }
- var output = serializeKey(key);
- if (item.value === true) {
- output += serializeParams(item.params);
- } else {
- output += '=';
- if (Array.isArray(item.value)) {
- output += serializeInnerList(item);
- } else {
- output += serializeItem(item);
- }
- }
- return output;
- }).join("," + optionalWhiteSpace);
- }
-
- /**
- * Encode an object into a structured field dictionary
- *
- * @param input - The structured field dictionary to encode
- * @returns The structured field string
- *
- * @group Structured Field
- *
- * @beta
- */
- function encodeSfDict(value, options) {
- return serializeDict(value, options);
- }
-
- /**
- * Checks if the given key is a token field.
- *
- * @param key - The key to check.
- *
- * @returns `true` if the key is a token field.
- *
- * @internal
- *
- * @group CMCD
- */
- var isTokenField = function isTokenField(key) {
- return key === 'ot' || key === 'sf' || key === 'st';
- };
-
- var isValid = function isValid(value) {
- if (typeof value === 'number') {
- return isFiniteNumber(value);
- }
- return value != null && value !== '' && value !== false;
- };
-
- /**
- * Constructs a relative path from a URL.
- *
- * @param url - The destination URL
- * @param base - The base URL
- * @returns The relative path
- *
- * @group Utils
- *
- * @beta
- */
- function urlToRelativePath(url, base) {
- var to = new URL(url);
- var from = new URL(base);
- if (to.origin !== from.origin) {
- return url;
- }
- var toPath = to.pathname.split('/').slice(1);
- var fromPath = from.pathname.split('/').slice(1, -1);
- // remove common parents
- while (toPath[0] === fromPath[0]) {
- toPath.shift();
- fromPath.shift();
- }
- // add back paths
- while (fromPath.length) {
- fromPath.shift();
- toPath.unshift('..');
- }
- return toPath.join('/');
- }
-
- /**
- * Generate a random v4 UUID
- *
- * @returns A random v4 UUID
- *
- * @group Utils
- *
- * @beta
- */
- function uuid() {
- try {
- return crypto.randomUUID();
- } catch (error) {
- try {
- var url = URL.createObjectURL(new Blob());
- var _uuid = url.toString();
- URL.revokeObjectURL(url);
- return _uuid.slice(_uuid.lastIndexOf('/') + 1);
- } catch (error) {
- var dt = new Date().getTime();
- var _uuid2 = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
- var r = (dt + Math.random() * 16) % 16 | 0;
- dt = Math.floor(dt / 16);
- return (c == 'x' ? r : r & 0x3 | 0x8).toString(16);
- });
- return _uuid2;
- }
- }
- }
-
- var toRounded = function toRounded(value) {
- return Math.round(value);
- };
- var toUrlSafe = function toUrlSafe(value, options) {
- if (options != null && options.baseUrl) {
- value = urlToRelativePath(value, options.baseUrl);
- }
- return encodeURIComponent(value);
- };
- var toHundred = function toHundred(value) {
- return toRounded(value / 100) * 100;
- };
- /**
- * The default formatters for CMCD values.
- *
- * @group CMCD
- *
- * @beta
- */
- var CmcdFormatters = {
- /**
- * Bitrate (kbps) rounded integer
- */
- br: toRounded,
- /**
- * Duration (milliseconds) rounded integer
- */
- d: toRounded,
- /**
- * Buffer Length (milliseconds) rounded nearest 100ms
- */
- bl: toHundred,
- /**
- * Deadline (milliseconds) rounded nearest 100ms
- */
- dl: toHundred,
- /**
- * Measured Throughput (kbps) rounded nearest 100kbps
- */
- mtp: toHundred,
- /**
- * Next Object Request URL encoded
- */
- nor: toUrlSafe,
- /**
- * Requested maximum throughput (kbps) rounded nearest 100kbps
- */
- rtp: toHundred,
- /**
- * Top Bitrate (kbps) rounded integer
- */
- tb: toRounded
- };
-
- /**
- * Internal CMCD processing function.
- *
- * @param obj - The CMCD object to process.
- * @param map - The mapping function to use.
- * @param options - Options for encoding.
- *
- * @internal
- *
- * @group CMCD
- */
- function processCmcd(obj, options) {
- var results = {};
- if (obj == null || typeof obj !== 'object') {
- return results;
- }
- var keys = Object.keys(obj).sort();
- var formatters = _extends({}, CmcdFormatters, options == null ? void 0 : options.formatters);
- var filter = options == null ? void 0 : options.filter;
- keys.forEach(function (key) {
- if (filter != null && filter(key)) {
- return;
- }
- var value = obj[key];
- var formatter = formatters[key];
- if (formatter) {
- value = formatter(value, options);
- }
- // Version should only be reported if not equal to 1.
- if (key === 'v' && value === 1) {
- return;
- }
- // Playback rate should only be sent if not equal to 1.
- if (key == 'pr' && value === 1) {
- return;
- }
- // ignore invalid values
- if (!isValid(value)) {
- return;
- }
- if (isTokenField(key) && typeof value === 'string') {
- value = new SfToken(value);
- }
- results[key] = value;
- });
- return results;
- }
-
- /**
- * Encode a CMCD object to a string.
- *
- * @param cmcd - The CMCD object to encode.
- * @param options - Options for encoding.
- *
- * @returns The encoded CMCD string.
- *
- * @group CMCD
- *
- * @beta
- */
- function encodeCmcd(cmcd, options) {
- if (options === void 0) {
- options = {};
- }
- if (!cmcd) {
- return '';
- }
- return encodeSfDict(processCmcd(cmcd, options), _extends({
- whitespace: false
- }, options));
- }
-
- /**
- * Convert a CMCD data object to request headers
- *
- * @param cmcd - The CMCD data object to convert.
- * @param options - Options for encoding the CMCD object.
- *
- * @returns The CMCD header shards.
- *
- * @group CMCD
- *
- * @beta
- */
- function toCmcdHeaders(cmcd, options) {
- var _options;
- if (options === void 0) {
- options = {};
- }
- if (!cmcd) {
- return {};
- }
- var entries = Object.entries(cmcd);
- var headerMap = Object.entries(CmcdHeaderMap).concat(Object.entries(((_options = options) == null ? void 0 : _options.customHeaderMap) || {}));
- var shards = entries.reduce(function (acc, entry) {
- var _headerMap$find, _acc$field;
- var key = entry[0],
- value = entry[1];
- var field = ((_headerMap$find = headerMap.find(function (entry) {
- return entry[1].includes(key);
- })) == null ? void 0 : _headerMap$find[0]) || CmcdHeaderField.REQUEST;
- (_acc$field = acc[field]) != null ? _acc$field : acc[field] = {};
- acc[field][key] = value;
- return acc;
- }, {});
- return Object.entries(shards).reduce(function (acc, _ref) {
- var field = _ref[0],
- value = _ref[1];
- acc[field] = encodeCmcd(value, options);
- return acc;
- }, {});
- }
-
- /**
- * Append CMCD query args to a header object.
- *
- * @param headers - The headers to append to.
- * @param cmcd - The CMCD object to append.
- * @param customHeaderMap - A map of custom CMCD keys to header fields.
- *
- * @returns The headers with the CMCD header shards appended.
- *
- * @group CMCD
- *
- * @beta
- */
- function appendCmcdHeaders(headers, cmcd, options) {
- return _extends(headers, toCmcdHeaders(cmcd, options));
- }
-
- /**
- * CMCD parameter name.
- *
- * @group CMCD
- *
- * @beta
- */
- var CMCD_PARAM = 'CMCD';
-
- /**
- * Convert a CMCD data object to a query arg.
- *
- * @param cmcd - The CMCD object to convert.
- * @param options - Options for encoding the CMCD object.
- *
- * @returns The CMCD query arg.
- *
- * @group CMCD
- *
- * @beta
- */
- function toCmcdQuery(cmcd, options) {
- if (options === void 0) {
- options = {};
- }
- if (!cmcd) {
- return '';
- }
- var params = encodeCmcd(cmcd, options);
- return CMCD_PARAM + "=" + encodeURIComponent(params);
- }
-
- var REGEX = /CMCD=[^]+/;
- /**
- * Append CMCD query args to a URL.
- *
- * @param url - The URL to append to.
- * @param cmcd - The CMCD object to append.
- * @param options - Options for encoding the CMCD object.
- *
- * @returns The URL with the CMCD query args appended.
- *
- * @group CMCD
- *
- * @beta
- */
- function appendCmcdQuery(url, cmcd, options) {
- // TODO: Replace with URLSearchParams once we drop Safari < 10.1 & Chrome < 49 support.
- // https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams
- var query = toCmcdQuery(cmcd, options);
- if (!query) {
- return url;
- }
- if (REGEX.test(url)) {
- return url.replace(REGEX, query);
- }
- var separator = url.includes('?') ? '&' : '?';
- return "" + url + separator + query;
- }
-
- /**
- * Controller to deal with Common Media Client Data (CMCD)
- * @see https://cdn.cta.tech/cta/media/media/resources/standards/pdfs/cta-5004-final.pdf
- */
- var CMCDController = /*#__PURE__*/function () {
- // eslint-disable-line no-restricted-globals
-
- function CMCDController(hls) {
- var _this = this;
- this.hls = void 0;
- this.config = void 0;
- this.media = void 0;
- this.sid = void 0;
- this.cid = void 0;
- this.useHeaders = false;
- this.includeKeys = void 0;
- this.initialized = false;
- this.starved = false;
- this.buffering = true;
- this.audioBuffer = void 0;
- // eslint-disable-line no-restricted-globals
- this.videoBuffer = void 0;
- this.onWaiting = function () {
- if (_this.initialized) {
- _this.starved = true;
- }
- _this.buffering = true;
- };
- this.onPlaying = function () {
- if (!_this.initialized) {
- _this.initialized = true;
- }
- _this.buffering = false;
- };
- /**
- * Apply CMCD data to a manifest request.
- */
- this.applyPlaylistData = function (context) {
- try {
- _this.apply(context, {
- ot: CmObjectType.MANIFEST,
- su: !_this.initialized
- });
- } catch (error) {
- logger.warn('Could not generate manifest CMCD data.', error);
- }
- };
- /**
- * Apply CMCD data to a segment request
- */
- this.applyFragmentData = function (context) {
- try {
- var fragment = context.frag;
- var level = _this.hls.levels[fragment.level];
- var ot = _this.getObjectType(fragment);
- var data = {
- d: fragment.duration * 1000,
- ot: ot
- };
- if (ot === CmObjectType.VIDEO || ot === CmObjectType.AUDIO || ot == CmObjectType.MUXED) {
- data.br = level.bitrate / 1000;
- data.tb = _this.getTopBandwidth(ot) / 1000;
- data.bl = _this.getBufferLength(ot);
- }
- _this.apply(context, data);
- } catch (error) {
- logger.warn('Could not generate segment CMCD data.', error);
- }
- };
- this.hls = hls;
- var config = this.config = hls.config;
- var cmcd = config.cmcd;
- if (cmcd != null) {
- config.pLoader = this.createPlaylistLoader();
- config.fLoader = this.createFragmentLoader();
- this.sid = cmcd.sessionId || uuid();
- this.cid = cmcd.contentId;
- this.useHeaders = cmcd.useHeaders === true;
- this.includeKeys = cmcd.includeKeys;
- this.registerListeners();
- }
- }
- var _proto = CMCDController.prototype;
- _proto.registerListeners = function registerListeners() {
- var hls = this.hls;
- hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- hls.on(Events.MEDIA_DETACHED, this.onMediaDetached, this);
- hls.on(Events.BUFFER_CREATED, this.onBufferCreated, this);
- };
- _proto.unregisterListeners = function unregisterListeners() {
- var hls = this.hls;
- hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- hls.off(Events.MEDIA_DETACHED, this.onMediaDetached, this);
- hls.off(Events.BUFFER_CREATED, this.onBufferCreated, this);
- };
- _proto.destroy = function destroy() {
- this.unregisterListeners();
- this.onMediaDetached();
-
- // @ts-ignore
- this.hls = this.config = this.audioBuffer = this.videoBuffer = null;
- // @ts-ignore
- this.onWaiting = this.onPlaying = null;
- };
- _proto.onMediaAttached = function onMediaAttached(event, data) {
- this.media = data.media;
- this.media.addEventListener('waiting', this.onWaiting);
- this.media.addEventListener('playing', this.onPlaying);
- };
- _proto.onMediaDetached = function onMediaDetached() {
- if (!this.media) {
- return;
- }
- this.media.removeEventListener('waiting', this.onWaiting);
- this.media.removeEventListener('playing', this.onPlaying);
-
- // @ts-ignore
- this.media = null;
- };
- _proto.onBufferCreated = function onBufferCreated(event, data) {
- var _data$tracks$audio, _data$tracks$video;
- this.audioBuffer = (_data$tracks$audio = data.tracks.audio) == null ? void 0 : _data$tracks$audio.buffer;
- this.videoBuffer = (_data$tracks$video = data.tracks.video) == null ? void 0 : _data$tracks$video.buffer;
- };
- /**
- * Create baseline CMCD data
- */
- _proto.createData = function createData() {
- var _this$media;
- return {
- v: 1,
- sf: CmStreamingFormat.HLS,
- sid: this.sid,
- cid: this.cid,
- pr: (_this$media = this.media) == null ? void 0 : _this$media.playbackRate,
- mtp: this.hls.bandwidthEstimate / 1000
- };
- }
-
- /**
- * Apply CMCD data to a request.
- */;
- _proto.apply = function apply(context, data) {
- if (data === void 0) {
- data = {};
- }
- // apply baseline data
- _extends(data, this.createData());
- var isVideo = data.ot === CmObjectType.INIT || data.ot === CmObjectType.VIDEO || data.ot === CmObjectType.MUXED;
- if (this.starved && isVideo) {
- data.bs = true;
- data.su = true;
- this.starved = false;
- }
- if (data.su == null) {
- data.su = this.buffering;
- }
-
- // TODO: Implement rtp, nrr, nor, dl
-
- var includeKeys = this.includeKeys;
- if (includeKeys) {
- data = Object.keys(data).reduce(function (acc, key) {
- includeKeys.includes(key) && (acc[key] = data[key]);
- return acc;
- }, {});
- }
- if (this.useHeaders) {
- if (!context.headers) {
- context.headers = {};
- }
- appendCmcdHeaders(context.headers, data);
- } else {
- context.url = appendCmcdQuery(context.url, data);
- }
- };
- /**
- * The CMCD object type.
- */
- _proto.getObjectType = function getObjectType(fragment) {
- var type = fragment.type;
- if (type === 'subtitle') {
- return CmObjectType.TIMED_TEXT;
- }
- if (fragment.sn === 'initSegment') {
- return CmObjectType.INIT;
- }
- if (type === 'audio') {
- return CmObjectType.AUDIO;
- }
- if (type === 'main') {
- if (!this.hls.audioTracks.length) {
- return CmObjectType.MUXED;
- }
- return CmObjectType.VIDEO;
- }
- return undefined;
- }
-
- /**
- * Get the highest bitrate.
- */;
- _proto.getTopBandwidth = function getTopBandwidth(type) {
- var bitrate = 0;
- var levels;
- var hls = this.hls;
- if (type === CmObjectType.AUDIO) {
- levels = hls.audioTracks;
- } else {
- var max = hls.maxAutoLevel;
- var len = max > -1 ? max + 1 : hls.levels.length;
- levels = hls.levels.slice(0, len);
- }
- for (var _iterator = _createForOfIteratorHelperLoose(levels), _step; !(_step = _iterator()).done;) {
- var level = _step.value;
- if (level.bitrate > bitrate) {
- bitrate = level.bitrate;
- }
- }
- return bitrate > 0 ? bitrate : NaN;
- }
-
- /**
- * Get the buffer length for a media type in milliseconds
- */;
- _proto.getBufferLength = function getBufferLength(type) {
- var media = this.hls.media;
- var buffer = type === CmObjectType.AUDIO ? this.audioBuffer : this.videoBuffer;
- if (!buffer || !media) {
- return NaN;
- }
- var info = BufferHelper.bufferInfo(buffer, media.currentTime, this.config.maxBufferHole);
- return info.len * 1000;
- }
-
- /**
- * Create a playlist loader
- */;
- _proto.createPlaylistLoader = function createPlaylistLoader() {
- var pLoader = this.config.pLoader;
- var apply = this.applyPlaylistData;
- var Ctor = pLoader || this.config.loader;
- return /*#__PURE__*/function () {
- function CmcdPlaylistLoader(config) {
- this.loader = void 0;
- this.loader = new Ctor(config);
- }
- var _proto2 = CmcdPlaylistLoader.prototype;
- _proto2.destroy = function destroy() {
- this.loader.destroy();
- };
- _proto2.abort = function abort() {
- this.loader.abort();
- };
- _proto2.load = function load(context, config, callbacks) {
- apply(context);
- this.loader.load(context, config, callbacks);
- };
- _createClass(CmcdPlaylistLoader, [{
- key: "stats",
- get: function get() {
- return this.loader.stats;
- }
- }, {
- key: "context",
- get: function get() {
- return this.loader.context;
- }
- }]);
- return CmcdPlaylistLoader;
- }();
- }
-
- /**
- * Create a playlist loader
- */;
- _proto.createFragmentLoader = function createFragmentLoader() {
- var fLoader = this.config.fLoader;
- var apply = this.applyFragmentData;
- var Ctor = fLoader || this.config.loader;
- return /*#__PURE__*/function () {
- function CmcdFragmentLoader(config) {
- this.loader = void 0;
- this.loader = new Ctor(config);
- }
- var _proto3 = CmcdFragmentLoader.prototype;
- _proto3.destroy = function destroy() {
- this.loader.destroy();
- };
- _proto3.abort = function abort() {
- this.loader.abort();
- };
- _proto3.load = function load(context, config, callbacks) {
- apply(context);
- this.loader.load(context, config, callbacks);
- };
- _createClass(CmcdFragmentLoader, [{
- key: "stats",
- get: function get() {
- return this.loader.stats;
- }
- }, {
- key: "context",
- get: function get() {
- return this.loader.context;
- }
- }]);
- return CmcdFragmentLoader;
- }();
- };
- return CMCDController;
- }();
-
- var PATHWAY_PENALTY_DURATION_MS = 300000;
- var ContentSteeringController = /*#__PURE__*/function () {
- function ContentSteeringController(hls) {
- this.hls = void 0;
- this.log = void 0;
- this.loader = null;
- this.uri = null;
- this.pathwayId = '.';
- this.pathwayPriority = null;
- this.timeToLoad = 300;
- this.reloadTimer = -1;
- this.updated = 0;
- this.started = false;
- this.enabled = true;
- this.levels = null;
- this.audioTracks = null;
- this.subtitleTracks = null;
- this.penalizedPathways = {};
- this.hls = hls;
- this.log = logger.log.bind(logger, "[content-steering]:");
- this.registerListeners();
- }
- var _proto = ContentSteeringController.prototype;
- _proto.registerListeners = function registerListeners() {
- var hls = this.hls;
- hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.on(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
- hls.on(Events.MANIFEST_PARSED, this.onManifestParsed, this);
- hls.on(Events.ERROR, this.onError, this);
- };
- _proto.unregisterListeners = function unregisterListeners() {
- var hls = this.hls;
- if (!hls) {
- return;
- }
- hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.off(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
- hls.off(Events.MANIFEST_PARSED, this.onManifestParsed, this);
- hls.off(Events.ERROR, this.onError, this);
- };
- _proto.startLoad = function startLoad() {
- this.started = true;
- this.clearTimeout();
- if (this.enabled && this.uri) {
- if (this.updated) {
- var ttl = this.timeToLoad * 1000 - (performance.now() - this.updated);
- if (ttl > 0) {
- this.scheduleRefresh(this.uri, ttl);
- return;
- }
- }
- this.loadSteeringManifest(this.uri);
- }
- };
- _proto.stopLoad = function stopLoad() {
- this.started = false;
- if (this.loader) {
- this.loader.destroy();
- this.loader = null;
- }
- this.clearTimeout();
- };
- _proto.clearTimeout = function clearTimeout() {
- if (this.reloadTimer !== -1) {
- self.clearTimeout(this.reloadTimer);
- this.reloadTimer = -1;
- }
- };
- _proto.destroy = function destroy() {
- this.unregisterListeners();
- this.stopLoad();
- // @ts-ignore
- this.hls = null;
- this.levels = this.audioTracks = this.subtitleTracks = null;
- };
- _proto.removeLevel = function removeLevel(levelToRemove) {
- var levels = this.levels;
- if (levels) {
- this.levels = levels.filter(function (level) {
- return level !== levelToRemove;
- });
- }
- };
- _proto.onManifestLoading = function onManifestLoading() {
- this.stopLoad();
- this.enabled = true;
- this.timeToLoad = 300;
- this.updated = 0;
- this.uri = null;
- this.pathwayId = '.';
- this.levels = this.audioTracks = this.subtitleTracks = null;
- };
- _proto.onManifestLoaded = function onManifestLoaded(event, data) {
- var contentSteering = data.contentSteering;
- if (contentSteering === null) {
- return;
- }
- this.pathwayId = contentSteering.pathwayId;
- this.uri = contentSteering.uri;
- if (this.started) {
- this.startLoad();
- }
- };
- _proto.onManifestParsed = function onManifestParsed(event, data) {
- this.audioTracks = data.audioTracks;
- this.subtitleTracks = data.subtitleTracks;
- };
- _proto.onError = function onError(event, data) {
- var errorAction = data.errorAction;
- if ((errorAction == null ? void 0 : errorAction.action) === NetworkErrorAction.SendAlternateToPenaltyBox && errorAction.flags === ErrorActionFlags.MoveAllAlternatesMatchingHost) {
- var levels = this.levels;
- var pathwayPriority = this.pathwayPriority;
- var errorPathway = this.pathwayId;
- if (data.context) {
- var _data$context = data.context,
- groupId = _data$context.groupId,
- _pathwayId = _data$context.pathwayId,
- type = _data$context.type;
- if (groupId && levels) {
- errorPathway = this.getPathwayForGroupId(groupId, type, errorPathway);
- } else if (_pathwayId) {
- errorPathway = _pathwayId;
- }
- }
- if (!(errorPathway in this.penalizedPathways)) {
- this.penalizedPathways[errorPathway] = performance.now();
- }
- if (!pathwayPriority && levels) {
- // If PATHWAY-PRIORITY was not provided, list pathways for error handling
- pathwayPriority = levels.reduce(function (pathways, level) {
- if (pathways.indexOf(level.pathwayId) === -1) {
- pathways.push(level.pathwayId);
- }
- return pathways;
- }, []);
- }
- if (pathwayPriority && pathwayPriority.length > 1) {
- this.updatePathwayPriority(pathwayPriority);
- errorAction.resolved = this.pathwayId !== errorPathway;
- }
- if (!errorAction.resolved) {
- logger.warn("Could not resolve " + data.details + " (\"" + data.error.message + "\") with content-steering for Pathway: " + errorPathway + " levels: " + (levels ? levels.length : levels) + " priorities: " + JSON.stringify(pathwayPriority) + " penalized: " + JSON.stringify(this.penalizedPathways));
- }
- }
- };
- _proto.filterParsedLevels = function filterParsedLevels(levels) {
- // Filter levels to only include those that are in the initial pathway
- this.levels = levels;
- var pathwayLevels = this.getLevelsForPathway(this.pathwayId);
- if (pathwayLevels.length === 0) {
- var _pathwayId2 = levels[0].pathwayId;
- this.log("No levels found in Pathway " + this.pathwayId + ". Setting initial Pathway to \"" + _pathwayId2 + "\"");
- pathwayLevels = this.getLevelsForPathway(_pathwayId2);
- this.pathwayId = _pathwayId2;
- }
- if (pathwayLevels.length !== levels.length) {
- this.log("Found " + pathwayLevels.length + "/" + levels.length + " levels in Pathway \"" + this.pathwayId + "\"");
- return pathwayLevels;
- }
- return levels;
- };
- _proto.getLevelsForPathway = function getLevelsForPathway(pathwayId) {
- if (this.levels === null) {
- return [];
- }
- return this.levels.filter(function (level) {
- return pathwayId === level.pathwayId;
- });
- };
- _proto.updatePathwayPriority = function updatePathwayPriority(pathwayPriority) {
- this.pathwayPriority = pathwayPriority;
- var levels;
-
- // Evaluate if we should remove the pathway from the penalized list
- var penalizedPathways = this.penalizedPathways;
- var now = performance.now();
- Object.keys(penalizedPathways).forEach(function (pathwayId) {
- if (now - penalizedPathways[pathwayId] > PATHWAY_PENALTY_DURATION_MS) {
- delete penalizedPathways[pathwayId];
- }
- });
- for (var i = 0; i < pathwayPriority.length; i++) {
- var _pathwayId3 = pathwayPriority[i];
- if (_pathwayId3 in penalizedPathways) {
- continue;
- }
- if (_pathwayId3 === this.pathwayId) {
- return;
- }
- var selectedIndex = this.hls.nextLoadLevel;
- var selectedLevel = this.hls.levels[selectedIndex];
- levels = this.getLevelsForPathway(_pathwayId3);
- if (levels.length > 0) {
- this.log("Setting Pathway to \"" + _pathwayId3 + "\"");
- this.pathwayId = _pathwayId3;
- reassignFragmentLevelIndexes(levels);
- this.hls.trigger(Events.LEVELS_UPDATED, {
- levels: levels
- });
- // Set LevelController's level to trigger LEVEL_SWITCHING which loads playlist if needed
- var levelAfterChange = this.hls.levels[selectedIndex];
- if (selectedLevel && levelAfterChange && this.levels) {
- if (levelAfterChange.attrs['STABLE-VARIANT-ID'] !== selectedLevel.attrs['STABLE-VARIANT-ID'] && levelAfterChange.bitrate !== selectedLevel.bitrate) {
- this.log("Unstable Pathways change from bitrate " + selectedLevel.bitrate + " to " + levelAfterChange.bitrate);
- }
- this.hls.nextLoadLevel = selectedIndex;
- }
- break;
- }
- }
- };
- _proto.getPathwayForGroupId = function getPathwayForGroupId(groupId, type, defaultPathway) {
- var levels = this.getLevelsForPathway(defaultPathway).concat(this.levels || []);
- for (var i = 0; i < levels.length; i++) {
- if (type === PlaylistContextType.AUDIO_TRACK && levels[i].hasAudioGroup(groupId) || type === PlaylistContextType.SUBTITLE_TRACK && levels[i].hasSubtitleGroup(groupId)) {
- return levels[i].pathwayId;
- }
- }
- return defaultPathway;
- };
- _proto.clonePathways = function clonePathways(pathwayClones) {
- var _this = this;
- var levels = this.levels;
- if (!levels) {
- return;
- }
- var audioGroupCloneMap = {};
- var subtitleGroupCloneMap = {};
- pathwayClones.forEach(function (pathwayClone) {
- var cloneId = pathwayClone.ID,
- baseId = pathwayClone['BASE-ID'],
- uriReplacement = pathwayClone['URI-REPLACEMENT'];
- if (levels.some(function (level) {
- return level.pathwayId === cloneId;
- })) {
- return;
- }
- var clonedVariants = _this.getLevelsForPathway(baseId).map(function (baseLevel) {
- var attributes = new AttrList(baseLevel.attrs);
- attributes['PATHWAY-ID'] = cloneId;
- var clonedAudioGroupId = attributes.AUDIO && attributes.AUDIO + "_clone_" + cloneId;
- var clonedSubtitleGroupId = attributes.SUBTITLES && attributes.SUBTITLES + "_clone_" + cloneId;
- if (clonedAudioGroupId) {
- audioGroupCloneMap[attributes.AUDIO] = clonedAudioGroupId;
- attributes.AUDIO = clonedAudioGroupId;
- }
- if (clonedSubtitleGroupId) {
- subtitleGroupCloneMap[attributes.SUBTITLES] = clonedSubtitleGroupId;
- attributes.SUBTITLES = clonedSubtitleGroupId;
- }
- var url = performUriReplacement(baseLevel.uri, attributes['STABLE-VARIANT-ID'], 'PER-VARIANT-URIS', uriReplacement);
- var clonedLevel = new Level({
- attrs: attributes,
- audioCodec: baseLevel.audioCodec,
- bitrate: baseLevel.bitrate,
- height: baseLevel.height,
- name: baseLevel.name,
- url: url,
- videoCodec: baseLevel.videoCodec,
- width: baseLevel.width
- });
- if (baseLevel.audioGroups) {
- for (var i = 1; i < baseLevel.audioGroups.length; i++) {
- clonedLevel.addGroupId('audio', baseLevel.audioGroups[i] + "_clone_" + cloneId);
- }
- }
- if (baseLevel.subtitleGroups) {
- for (var _i = 1; _i < baseLevel.subtitleGroups.length; _i++) {
- clonedLevel.addGroupId('text', baseLevel.subtitleGroups[_i] + "_clone_" + cloneId);
- }
- }
- return clonedLevel;
- });
- levels.push.apply(levels, clonedVariants);
- cloneRenditionGroups(_this.audioTracks, audioGroupCloneMap, uriReplacement, cloneId);
- cloneRenditionGroups(_this.subtitleTracks, subtitleGroupCloneMap, uriReplacement, cloneId);
- });
- };
- _proto.loadSteeringManifest = function loadSteeringManifest(uri) {
- var _this2 = this;
- var config = this.hls.config;
- var Loader = config.loader;
- if (this.loader) {
- this.loader.destroy();
- }
- this.loader = new Loader(config);
- var url;
- try {
- url = new self.URL(uri);
- } catch (error) {
- this.enabled = false;
- this.log("Failed to parse Steering Manifest URI: " + uri);
- return;
- }
- if (url.protocol !== 'data:') {
- var throughput = (this.hls.bandwidthEstimate || config.abrEwmaDefaultEstimate) | 0;
- url.searchParams.set('_HLS_pathway', this.pathwayId);
- url.searchParams.set('_HLS_throughput', '' + throughput);
- }
- var context = {
- responseType: 'json',
- url: url.href
- };
- var loadPolicy = config.steeringManifestLoadPolicy.default;
- var legacyRetryCompatibility = loadPolicy.errorRetry || loadPolicy.timeoutRetry || {};
- var loaderConfig = {
- loadPolicy: loadPolicy,
- timeout: loadPolicy.maxLoadTimeMs,
- maxRetry: legacyRetryCompatibility.maxNumRetry || 0,
- retryDelay: legacyRetryCompatibility.retryDelayMs || 0,
- maxRetryDelay: legacyRetryCompatibility.maxRetryDelayMs || 0
- };
- var callbacks = {
- onSuccess: function onSuccess(response, stats, context, networkDetails) {
- _this2.log("Loaded steering manifest: \"" + url + "\"");
- var steeringData = response.data;
- if (steeringData.VERSION !== 1) {
- _this2.log("Steering VERSION " + steeringData.VERSION + " not supported!");
- return;
- }
- _this2.updated = performance.now();
- _this2.timeToLoad = steeringData.TTL;
- var reloadUri = steeringData['RELOAD-URI'],
- pathwayClones = steeringData['PATHWAY-CLONES'],
- pathwayPriority = steeringData['PATHWAY-PRIORITY'];
- if (reloadUri) {
- try {
- _this2.uri = new self.URL(reloadUri, url).href;
- } catch (error) {
- _this2.enabled = false;
- _this2.log("Failed to parse Steering Manifest RELOAD-URI: " + reloadUri);
- return;
- }
- }
- _this2.scheduleRefresh(_this2.uri || context.url);
- if (pathwayClones) {
- _this2.clonePathways(pathwayClones);
- }
- var loadedSteeringData = {
- steeringManifest: steeringData,
- url: url.toString()
- };
- _this2.hls.trigger(Events.STEERING_MANIFEST_LOADED, loadedSteeringData);
- if (pathwayPriority) {
- _this2.updatePathwayPriority(pathwayPriority);
- }
- },
- onError: function onError(error, context, networkDetails, stats) {
- _this2.log("Error loading steering manifest: " + error.code + " " + error.text + " (" + context.url + ")");
- _this2.stopLoad();
- if (error.code === 410) {
- _this2.enabled = false;
- _this2.log("Steering manifest " + context.url + " no longer available");
- return;
- }
- var ttl = _this2.timeToLoad * 1000;
- if (error.code === 429) {
- var loader = _this2.loader;
- if (typeof (loader == null ? void 0 : loader.getResponseHeader) === 'function') {
- var retryAfter = loader.getResponseHeader('Retry-After');
- if (retryAfter) {
- ttl = parseFloat(retryAfter) * 1000;
- }
- }
- _this2.log("Steering manifest " + context.url + " rate limited");
- return;
- }
- _this2.scheduleRefresh(_this2.uri || context.url, ttl);
- },
- onTimeout: function onTimeout(stats, context, networkDetails) {
- _this2.log("Timeout loading steering manifest (" + context.url + ")");
- _this2.scheduleRefresh(_this2.uri || context.url);
- }
- };
- this.log("Requesting steering manifest: " + url);
- this.loader.load(context, loaderConfig, callbacks);
- };
- _proto.scheduleRefresh = function scheduleRefresh(uri, ttlMs) {
- var _this3 = this;
- if (ttlMs === void 0) {
- ttlMs = this.timeToLoad * 1000;
- }
- this.clearTimeout();
- this.reloadTimer = self.setTimeout(function () {
- var _this3$hls;
- var media = (_this3$hls = _this3.hls) == null ? void 0 : _this3$hls.media;
- if (media && !media.ended) {
- _this3.loadSteeringManifest(uri);
- return;
- }
- _this3.scheduleRefresh(uri, _this3.timeToLoad * 1000);
- }, ttlMs);
- };
- return ContentSteeringController;
- }();
- function cloneRenditionGroups(tracks, groupCloneMap, uriReplacement, cloneId) {
- if (!tracks) {
- return;
- }
- Object.keys(groupCloneMap).forEach(function (audioGroupId) {
- var clonedTracks = tracks.filter(function (track) {
- return track.groupId === audioGroupId;
- }).map(function (track) {
- var clonedTrack = _extends({}, track);
- clonedTrack.details = undefined;
- clonedTrack.attrs = new AttrList(clonedTrack.attrs);
- clonedTrack.url = clonedTrack.attrs.URI = performUriReplacement(track.url, track.attrs['STABLE-RENDITION-ID'], 'PER-RENDITION-URIS', uriReplacement);
- clonedTrack.groupId = clonedTrack.attrs['GROUP-ID'] = groupCloneMap[audioGroupId];
- clonedTrack.attrs['PATHWAY-ID'] = cloneId;
- return clonedTrack;
- });
- tracks.push.apply(tracks, clonedTracks);
- });
- }
- function performUriReplacement(uri, stableId, perOptionKey, uriReplacement) {
- var host = uriReplacement.HOST,
- params = uriReplacement.PARAMS,
- perOptionUris = uriReplacement[perOptionKey];
- var perVariantUri;
- if (stableId) {
- perVariantUri = perOptionUris == null ? void 0 : perOptionUris[stableId];
- if (perVariantUri) {
- uri = perVariantUri;
- }
- }
- var url = new self.URL(uri);
- if (host && !perVariantUri) {
- url.host = host;
- }
- if (params) {
- Object.keys(params).sort().forEach(function (key) {
- if (key) {
- url.searchParams.set(key, params[key]);
- }
- });
- }
- return url.href;
- }
-
- var AGE_HEADER_LINE_REGEX = /^age:\s*[\d.]+\s*$/im;
- var XhrLoader = /*#__PURE__*/function () {
- function XhrLoader(config) {
- this.xhrSetup = void 0;
- this.requestTimeout = void 0;
- this.retryTimeout = void 0;
- this.retryDelay = void 0;
- this.config = null;
- this.callbacks = null;
- this.context = null;
- this.loader = null;
- this.stats = void 0;
- this.xhrSetup = config ? config.xhrSetup || null : null;
- this.stats = new LoadStats();
- this.retryDelay = 0;
- }
- var _proto = XhrLoader.prototype;
- _proto.destroy = function destroy() {
- this.callbacks = null;
- this.abortInternal();
- this.loader = null;
- this.config = null;
- this.context = null;
- this.xhrSetup = null;
- };
- _proto.abortInternal = function abortInternal() {
- var loader = this.loader;
- self.clearTimeout(this.requestTimeout);
- self.clearTimeout(this.retryTimeout);
- if (loader) {
- loader.onreadystatechange = null;
- loader.onprogress = null;
- if (loader.readyState !== 4) {
- this.stats.aborted = true;
- loader.abort();
- }
- }
- };
- _proto.abort = function abort() {
- var _this$callbacks;
- this.abortInternal();
- if ((_this$callbacks = this.callbacks) != null && _this$callbacks.onAbort) {
- this.callbacks.onAbort(this.stats, this.context, this.loader);
- }
- };
- _proto.load = function load(context, config, callbacks) {
- if (this.stats.loading.start) {
- throw new Error('Loader can only be used once.');
- }
- this.stats.loading.start = self.performance.now();
- this.context = context;
- this.config = config;
- this.callbacks = callbacks;
- this.loadInternal();
- };
- _proto.loadInternal = function loadInternal() {
- var _this = this;
- var config = this.config,
- context = this.context;
- if (!config || !context) {
- return;
- }
- var xhr = this.loader = new self.XMLHttpRequest();
- var stats = this.stats;
- stats.loading.first = 0;
- stats.loaded = 0;
- stats.aborted = false;
- var xhrSetup = this.xhrSetup;
- if (xhrSetup) {
- Promise.resolve().then(function () {
- if (_this.loader !== xhr || _this.stats.aborted) return;
- return xhrSetup(xhr, context.url);
- }).catch(function (error) {
- if (_this.loader !== xhr || _this.stats.aborted) return;
- xhr.open('GET', context.url, true);
- return xhrSetup(xhr, context.url);
- }).then(function () {
- if (_this.loader !== xhr || _this.stats.aborted) return;
- _this.openAndSendXhr(xhr, context, config);
- }).catch(function (error) {
- // IE11 throws an exception on xhr.open if attempting to access an HTTP resource over HTTPS
- _this.callbacks.onError({
- code: xhr.status,
- text: error.message
- }, context, xhr, stats);
- return;
- });
- } else {
- this.openAndSendXhr(xhr, context, config);
- }
- };
- _proto.openAndSendXhr = function openAndSendXhr(xhr, context, config) {
- if (!xhr.readyState) {
- xhr.open('GET', context.url, true);
- }
- var headers = context.headers;
- var _config$loadPolicy = config.loadPolicy,
- maxTimeToFirstByteMs = _config$loadPolicy.maxTimeToFirstByteMs,
- maxLoadTimeMs = _config$loadPolicy.maxLoadTimeMs;
- if (headers) {
- for (var header in headers) {
- xhr.setRequestHeader(header, headers[header]);
- }
- }
- if (context.rangeEnd) {
- xhr.setRequestHeader('Range', 'bytes=' + context.rangeStart + '-' + (context.rangeEnd - 1));
- }
- xhr.onreadystatechange = this.readystatechange.bind(this);
- xhr.onprogress = this.loadprogress.bind(this);
- xhr.responseType = context.responseType;
- // setup timeout before we perform request
- self.clearTimeout(this.requestTimeout);
- config.timeout = maxTimeToFirstByteMs && isFiniteNumber(maxTimeToFirstByteMs) ? maxTimeToFirstByteMs : maxLoadTimeMs;
- this.requestTimeout = self.setTimeout(this.loadtimeout.bind(this), config.timeout);
- xhr.send();
- };
- _proto.readystatechange = function readystatechange() {
- var context = this.context,
- xhr = this.loader,
- stats = this.stats;
- if (!context || !xhr) {
- return;
- }
- var readyState = xhr.readyState;
- var config = this.config;
-
- // don't proceed if xhr has been aborted
- if (stats.aborted) {
- return;
- }
-
- // >= HEADERS_RECEIVED
- if (readyState >= 2) {
- if (stats.loading.first === 0) {
- stats.loading.first = Math.max(self.performance.now(), stats.loading.start);
- // readyState >= 2 AND readyState !==4 (readyState = HEADERS_RECEIVED || LOADING) rearm timeout as xhr not finished yet
- if (config.timeout !== config.loadPolicy.maxLoadTimeMs) {
- self.clearTimeout(this.requestTimeout);
- config.timeout = config.loadPolicy.maxLoadTimeMs;
- this.requestTimeout = self.setTimeout(this.loadtimeout.bind(this), config.loadPolicy.maxLoadTimeMs - (stats.loading.first - stats.loading.start));
- }
- }
- if (readyState === 4) {
- self.clearTimeout(this.requestTimeout);
- xhr.onreadystatechange = null;
- xhr.onprogress = null;
- var _status = xhr.status;
- // http status between 200 to 299 are all successful
- var useResponse = xhr.responseType !== 'text';
- if (_status >= 200 && _status < 300 && (useResponse && xhr.response || xhr.responseText !== null)) {
- stats.loading.end = Math.max(self.performance.now(), stats.loading.first);
- var data = useResponse ? xhr.response : xhr.responseText;
- var len = xhr.responseType === 'arraybuffer' ? data.byteLength : data.length;
- stats.loaded = stats.total = len;
- stats.bwEstimate = stats.total * 8000 / (stats.loading.end - stats.loading.first);
- if (!this.callbacks) {
- return;
- }
- var onProgress = this.callbacks.onProgress;
- if (onProgress) {
- onProgress(stats, context, data, xhr);
- }
- if (!this.callbacks) {
- return;
- }
- var response = {
- url: xhr.responseURL,
- data: data,
- code: _status
- };
- this.callbacks.onSuccess(response, stats, context, xhr);
- } else {
- var retryConfig = config.loadPolicy.errorRetry;
- var retryCount = stats.retry;
- // if max nb of retries reached or if http status between 400 and 499 (such error cannot be recovered, retrying is useless), return error
- var _response = {
- url: context.url,
- data: undefined,
- code: _status
- };
- if (shouldRetry(retryConfig, retryCount, false, _response)) {
- this.retry(retryConfig);
- } else {
- logger.error(_status + " while loading " + context.url);
- this.callbacks.onError({
- code: _status,
- text: xhr.statusText
- }, context, xhr, stats);
- }
- }
- }
- }
- };
- _proto.loadtimeout = function loadtimeout() {
- if (!this.config) return;
- var retryConfig = this.config.loadPolicy.timeoutRetry;
- var retryCount = this.stats.retry;
- if (shouldRetry(retryConfig, retryCount, true)) {
- this.retry(retryConfig);
- } else {
- var _this$context;
- logger.warn("timeout while loading " + ((_this$context = this.context) == null ? void 0 : _this$context.url));
- var callbacks = this.callbacks;
- if (callbacks) {
- this.abortInternal();
- callbacks.onTimeout(this.stats, this.context, this.loader);
- }
- }
- };
- _proto.retry = function retry(retryConfig) {
- var context = this.context,
- stats = this.stats;
- this.retryDelay = getRetryDelay(retryConfig, stats.retry);
- stats.retry++;
- logger.warn((status ? 'HTTP Status ' + status : 'Timeout') + " while loading " + (context == null ? void 0 : context.url) + ", retrying " + stats.retry + "/" + retryConfig.maxNumRetry + " in " + this.retryDelay + "ms");
- // abort and reset internal state
- this.abortInternal();
- this.loader = null;
- // schedule retry
- self.clearTimeout(this.retryTimeout);
- this.retryTimeout = self.setTimeout(this.loadInternal.bind(this), this.retryDelay);
- };
- _proto.loadprogress = function loadprogress(event) {
- var stats = this.stats;
- stats.loaded = event.loaded;
- if (event.lengthComputable) {
- stats.total = event.total;
- }
- };
- _proto.getCacheAge = function getCacheAge() {
- var result = null;
- if (this.loader && AGE_HEADER_LINE_REGEX.test(this.loader.getAllResponseHeaders())) {
- var ageHeader = this.loader.getResponseHeader('age');
- result = ageHeader ? parseFloat(ageHeader) : null;
- }
- return result;
- };
- _proto.getResponseHeader = function getResponseHeader(name) {
- if (this.loader && new RegExp("^" + name + ":\\s*[\\d.]+\\s*$", 'im').test(this.loader.getAllResponseHeaders())) {
- return this.loader.getResponseHeader(name);
- }
- return null;
- };
- return XhrLoader;
- }();
-
- function fetchSupported() {
- if (
- // @ts-ignore
- self.fetch && self.AbortController && self.ReadableStream && self.Request) {
- try {
- new self.ReadableStream({}); // eslint-disable-line no-new
- return true;
- } catch (e) {
- /* noop */
- }
- }
- return false;
- }
- var BYTERANGE = /(\d+)-(\d+)\/(\d+)/;
- var FetchLoader = /*#__PURE__*/function () {
- function FetchLoader(config /* HlsConfig */) {
- this.fetchSetup = void 0;
- this.requestTimeout = void 0;
- this.request = null;
- this.response = null;
- this.controller = void 0;
- this.context = null;
- this.config = null;
- this.callbacks = null;
- this.stats = void 0;
- this.loader = null;
- this.fetchSetup = config.fetchSetup || getRequest;
- this.controller = new self.AbortController();
- this.stats = new LoadStats();
- }
- var _proto = FetchLoader.prototype;
- _proto.destroy = function destroy() {
- this.loader = this.callbacks = this.context = this.config = this.request = null;
- this.abortInternal();
- this.response = null;
- // @ts-ignore
- this.fetchSetup = this.controller = this.stats = null;
- };
- _proto.abortInternal = function abortInternal() {
- if (this.controller && !this.stats.loading.end) {
- this.stats.aborted = true;
- this.controller.abort();
- }
- };
- _proto.abort = function abort() {
- var _this$callbacks;
- this.abortInternal();
- if ((_this$callbacks = this.callbacks) != null && _this$callbacks.onAbort) {
- this.callbacks.onAbort(this.stats, this.context, this.response);
- }
- };
- _proto.load = function load(context, config, callbacks) {
- var _this = this;
- var stats = this.stats;
- if (stats.loading.start) {
- throw new Error('Loader can only be used once.');
- }
- stats.loading.start = self.performance.now();
- var initParams = getRequestParameters(context, this.controller.signal);
- var onProgress = callbacks.onProgress;
- var isArrayBuffer = context.responseType === 'arraybuffer';
- var LENGTH = isArrayBuffer ? 'byteLength' : 'length';
- var _config$loadPolicy = config.loadPolicy,
- maxTimeToFirstByteMs = _config$loadPolicy.maxTimeToFirstByteMs,
- maxLoadTimeMs = _config$loadPolicy.maxLoadTimeMs;
- this.context = context;
- this.config = config;
- this.callbacks = callbacks;
- this.request = this.fetchSetup(context, initParams);
- self.clearTimeout(this.requestTimeout);
- config.timeout = maxTimeToFirstByteMs && isFiniteNumber(maxTimeToFirstByteMs) ? maxTimeToFirstByteMs : maxLoadTimeMs;
- this.requestTimeout = self.setTimeout(function () {
- _this.abortInternal();
- callbacks.onTimeout(stats, context, _this.response);
- }, config.timeout);
- self.fetch(this.request).then(function (response) {
- _this.response = _this.loader = response;
- var first = Math.max(self.performance.now(), stats.loading.start);
- self.clearTimeout(_this.requestTimeout);
- config.timeout = maxLoadTimeMs;
- _this.requestTimeout = self.setTimeout(function () {
- _this.abortInternal();
- callbacks.onTimeout(stats, context, _this.response);
- }, maxLoadTimeMs - (first - stats.loading.start));
- if (!response.ok) {
- var status = response.status,
- statusText = response.statusText;
- throw new FetchError(statusText || 'fetch, bad network response', status, response);
- }
- stats.loading.first = first;
- stats.total = getContentLength(response.headers) || stats.total;
- if (onProgress && isFiniteNumber(config.highWaterMark)) {
- return _this.loadProgressively(response, stats, context, config.highWaterMark, onProgress);
- }
- if (isArrayBuffer) {
- return response.arrayBuffer();
- }
- if (context.responseType === 'json') {
- return response.json();
- }
- return response.text();
- }).then(function (responseData) {
- var response = _this.response;
- if (!response) {
- throw new Error('loader destroyed');
- }
- self.clearTimeout(_this.requestTimeout);
- stats.loading.end = Math.max(self.performance.now(), stats.loading.first);
- var total = responseData[LENGTH];
- if (total) {
- stats.loaded = stats.total = total;
- }
- var loaderResponse = {
- url: response.url,
- data: responseData,
- code: response.status
- };
- if (onProgress && !isFiniteNumber(config.highWaterMark)) {
- onProgress(stats, context, responseData, response);
- }
- callbacks.onSuccess(loaderResponse, stats, context, response);
- }).catch(function (error) {
- self.clearTimeout(_this.requestTimeout);
- if (stats.aborted) {
- return;
- }
- // CORS errors result in an undefined code. Set it to 0 here to align with XHR's behavior
- // when destroying, 'error' itself can be undefined
- var code = !error ? 0 : error.code || 0;
- var text = !error ? null : error.message;
- callbacks.onError({
- code: code,
- text: text
- }, context, error ? error.details : null, stats);
- });
- };
- _proto.getCacheAge = function getCacheAge() {
- var result = null;
- if (this.response) {
- var ageHeader = this.response.headers.get('age');
- result = ageHeader ? parseFloat(ageHeader) : null;
- }
- return result;
- };
- _proto.getResponseHeader = function getResponseHeader(name) {
- return this.response ? this.response.headers.get(name) : null;
- };
- _proto.loadProgressively = function loadProgressively(response, stats, context, highWaterMark, onProgress) {
- if (highWaterMark === void 0) {
- highWaterMark = 0;
- }
- var chunkCache = new ChunkCache();
- var reader = response.body.getReader();
- var pump = function pump() {
- return reader.read().then(function (data) {
- if (data.done) {
- if (chunkCache.dataLength) {
- onProgress(stats, context, chunkCache.flush(), response);
- }
- return Promise.resolve(new ArrayBuffer(0));
- }
- var chunk = data.value;
- var len = chunk.length;
- stats.loaded += len;
- if (len < highWaterMark || chunkCache.dataLength) {
- // The current chunk is too small to to be emitted or the cache already has data
- // Push it to the cache
- chunkCache.push(chunk);
- if (chunkCache.dataLength >= highWaterMark) {
- // flush in order to join the typed arrays
- onProgress(stats, context, chunkCache.flush(), response);
- }
- } else {
- // If there's nothing cached already, and the chache is large enough
- // just emit the progress event
- onProgress(stats, context, chunk, response);
- }
- return pump();
- }).catch(function () {
- /* aborted */
- return Promise.reject();
- });
- };
- return pump();
- };
- return FetchLoader;
- }();
- function getRequestParameters(context, signal) {
- var initParams = {
- method: 'GET',
- mode: 'cors',
- credentials: 'same-origin',
- signal: signal,
- headers: new self.Headers(_extends({}, context.headers))
- };
- if (context.rangeEnd) {
- initParams.headers.set('Range', 'bytes=' + context.rangeStart + '-' + String(context.rangeEnd - 1));
- }
- return initParams;
- }
- function getByteRangeLength(byteRangeHeader) {
- var result = BYTERANGE.exec(byteRangeHeader);
- if (result) {
- return parseInt(result[2]) - parseInt(result[1]) + 1;
- }
- }
- function getContentLength(headers) {
- var contentRange = headers.get('Content-Range');
- if (contentRange) {
- var byteRangeLength = getByteRangeLength(contentRange);
- if (isFiniteNumber(byteRangeLength)) {
- return byteRangeLength;
- }
- }
- var contentLength = headers.get('Content-Length');
- if (contentLength) {
- return parseInt(contentLength);
- }
- }
- function getRequest(context, initParams) {
- return new self.Request(context.url, initParams);
- }
- var FetchError = /*#__PURE__*/function (_Error) {
- _inheritsLoose(FetchError, _Error);
- function FetchError(message, code, details) {
- var _this2;
- _this2 = _Error.call(this, message) || this;
- _this2.code = void 0;
- _this2.details = void 0;
- _this2.code = code;
- _this2.details = details;
- return _this2;
- }
- return FetchError;
- }( /*#__PURE__*/_wrapNativeSuper(Error));
-
- var WHITESPACE_CHAR = /\s/;
- var Cues = {
- newCue: function newCue(track, startTime, endTime, captionScreen) {
- var result = [];
- var row;
- // the type data states this is VTTCue, but it can potentially be a TextTrackCue on old browsers
- var cue;
- var indenting;
- var indent;
- var text;
- var Cue = self.VTTCue || self.TextTrackCue;
- for (var r = 0; r < captionScreen.rows.length; r++) {
- row = captionScreen.rows[r];
- indenting = true;
- indent = 0;
- text = '';
- if (!row.isEmpty()) {
- var _track$cues;
- for (var c = 0; c < row.chars.length; c++) {
- if (WHITESPACE_CHAR.test(row.chars[c].uchar) && indenting) {
- indent++;
- } else {
- text += row.chars[c].uchar;
- indenting = false;
- }
- }
- // To be used for cleaning-up orphaned roll-up captions
- row.cueStartTime = startTime;
-
- // Give a slight bump to the endTime if it's equal to startTime to avoid a SyntaxError in IE
- if (startTime === endTime) {
- endTime += 0.0001;
- }
- if (indent >= 16) {
- indent--;
- } else {
- indent++;
- }
- var cueText = fixLineBreaks(text.trim());
- var id = generateCueId(startTime, endTime, cueText);
-
- // If this cue already exists in the track do not push it
- if (!(track != null && (_track$cues = track.cues) != null && _track$cues.getCueById(id))) {
- cue = new Cue(startTime, endTime, cueText);
- cue.id = id;
- cue.line = r + 1;
- cue.align = 'left';
- // Clamp the position between 10 and 80 percent (CEA-608 PAC indent code)
- // https://dvcs.w3.org/hg/text-tracks/raw-file/default/608toVTT/608toVTT.html#positioning-in-cea-608
- // Firefox throws an exception and captions break with out of bounds 0-100 values
- cue.position = 10 + Math.min(80, Math.floor(indent * 8 / 32) * 10);
- result.push(cue);
- }
- }
- }
- if (track && result.length) {
- // Sort bottom cues in reverse order so that they render in line order when overlapping in Chrome
- result.sort(function (cueA, cueB) {
- if (cueA.line === 'auto' || cueB.line === 'auto') {
- return 0;
- }
- if (cueA.line > 8 && cueB.line > 8) {
- return cueB.line - cueA.line;
- }
- return cueA.line - cueB.line;
- });
- result.forEach(function (cue) {
- return addCueToTrack(track, cue);
- });
- }
- return result;
- }
- };
-
- /**
- * @deprecated use fragLoadPolicy.default
- */
-
- /**
- * @deprecated use manifestLoadPolicy.default and playlistLoadPolicy.default
- */
-
- var defaultLoadPolicy = {
- maxTimeToFirstByteMs: 8000,
- maxLoadTimeMs: 20000,
- timeoutRetry: null,
- errorRetry: null
- };
-
- /**
- * @ignore
- * If possible, keep hlsDefaultConfig shallow
- * It is cloned whenever a new Hls instance is created, by keeping the config
- * shallow the properties are cloned, and we don't end up manipulating the default
- */
- var hlsDefaultConfig = _objectSpread2(_objectSpread2({
- autoStartLoad: true,
- // used by stream-controller
- startPosition: -1,
- // used by stream-controller
- defaultAudioCodec: undefined,
- // used by stream-controller
- debug: false,
- // used by logger
- capLevelOnFPSDrop: false,
- // used by fps-controller
- capLevelToPlayerSize: false,
- // used by cap-level-controller
- ignoreDevicePixelRatio: false,
- // used by cap-level-controller
- preferManagedMediaSource: true,
- initialLiveManifestSize: 1,
- // used by stream-controller
- maxBufferLength: 30,
- // used by stream-controller
- backBufferLength: Infinity,
- // used by buffer-controller
- frontBufferFlushThreshold: Infinity,
- maxBufferSize: 60 * 1000 * 1000,
- // used by stream-controller
- maxBufferHole: 0.1,
- // used by stream-controller
- highBufferWatchdogPeriod: 2,
- // used by stream-controller
- nudgeOffset: 0.1,
- // used by stream-controller
- nudgeMaxRetry: 3,
- // used by stream-controller
- maxFragLookUpTolerance: 0.25,
- // used by stream-controller
- liveSyncDurationCount: 3,
- // used by latency-controller
- liveMaxLatencyDurationCount: Infinity,
- // used by latency-controller
- liveSyncDuration: undefined,
- // used by latency-controller
- liveMaxLatencyDuration: undefined,
- // used by latency-controller
- maxLiveSyncPlaybackRate: 1,
- // used by latency-controller
- liveDurationInfinity: false,
- // used by buffer-controller
- /**
- * @deprecated use backBufferLength
- */
- liveBackBufferLength: null,
- // used by buffer-controller
- maxMaxBufferLength: 600,
- // used by stream-controller
- enableWorker: true,
- // used by transmuxer
- workerPath: null,
- // used by transmuxer
- enableSoftwareAES: true,
- // used by decrypter
- startLevel: undefined,
- // used by level-controller
- startFragPrefetch: false,
- // used by stream-controller
- fpsDroppedMonitoringPeriod: 5000,
- // used by fps-controller
- fpsDroppedMonitoringThreshold: 0.2,
- // used by fps-controller
- appendErrorMaxRetry: 3,
- // used by buffer-controller
- loader: XhrLoader,
- // loader: FetchLoader,
- fLoader: undefined,
- // used by fragment-loader
- pLoader: undefined,
- // used by playlist-loader
- xhrSetup: undefined,
- // used by xhr-loader
- licenseXhrSetup: undefined,
- // used by eme-controller
- licenseResponseCallback: undefined,
- // used by eme-controller
- abrController: AbrController,
- bufferController: BufferController,
- capLevelController: CapLevelController,
- errorController: ErrorController,
- fpsController: FPSController,
- stretchShortVideoTrack: false,
- // used by mp4-remuxer
- maxAudioFramesDrift: 1,
- // used by mp4-remuxer
- forceKeyFrameOnDiscontinuity: true,
- // used by ts-demuxer
- abrEwmaFastLive: 3,
- // used by abr-controller
- abrEwmaSlowLive: 9,
- // used by abr-controller
- abrEwmaFastVoD: 3,
- // used by abr-controller
- abrEwmaSlowVoD: 9,
- // used by abr-controller
- abrEwmaDefaultEstimate: 5e5,
- // 500 kbps // used by abr-controller
- abrEwmaDefaultEstimateMax: 5e6,
- // 5 mbps
- abrBandWidthFactor: 0.95,
- // used by abr-controller
- abrBandWidthUpFactor: 0.7,
- // used by abr-controller
- abrMaxWithRealBitrate: false,
- // used by abr-controller
- maxStarvationDelay: 4,
- // used by abr-controller
- maxLoadingDelay: 4,
- // used by abr-controller
- minAutoBitrate: 0,
- // used by hls
- emeEnabled: false,
- // used by eme-controller
- widevineLicenseUrl: undefined,
- // used by eme-controller
- drmSystems: {},
- // used by eme-controller
- drmSystemOptions: {},
- // used by eme-controller
- requestMediaKeySystemAccessFunc: requestMediaKeySystemAccess ,
- // used by eme-controller
- testBandwidth: true,
- progressive: false,
- lowLatencyMode: true,
- cmcd: undefined,
- enableDateRangeMetadataCues: true,
- enableEmsgMetadataCues: true,
- enableID3MetadataCues: true,
- useMediaCapabilities: true,
- certLoadPolicy: {
- default: defaultLoadPolicy
- },
- keyLoadPolicy: {
- default: {
- maxTimeToFirstByteMs: 8000,
- maxLoadTimeMs: 20000,
- timeoutRetry: {
- maxNumRetry: 1,
- retryDelayMs: 1000,
- maxRetryDelayMs: 20000,
- backoff: 'linear'
- },
- errorRetry: {
- maxNumRetry: 8,
- retryDelayMs: 1000,
- maxRetryDelayMs: 20000,
- backoff: 'linear'
- }
- }
- },
- manifestLoadPolicy: {
- default: {
- maxTimeToFirstByteMs: Infinity,
- maxLoadTimeMs: 20000,
- timeoutRetry: {
- maxNumRetry: 2,
- retryDelayMs: 0,
- maxRetryDelayMs: 0
- },
- errorRetry: {
- maxNumRetry: 1,
- retryDelayMs: 1000,
- maxRetryDelayMs: 8000
- }
- }
- },
- playlistLoadPolicy: {
- default: {
- maxTimeToFirstByteMs: 10000,
- maxLoadTimeMs: 20000,
- timeoutRetry: {
- maxNumRetry: 2,
- retryDelayMs: 0,
- maxRetryDelayMs: 0
- },
- errorRetry: {
- maxNumRetry: 2,
- retryDelayMs: 1000,
- maxRetryDelayMs: 8000
- }
- }
- },
- fragLoadPolicy: {
- default: {
- maxTimeToFirstByteMs: 10000,
- maxLoadTimeMs: 120000,
- timeoutRetry: {
- maxNumRetry: 4,
- retryDelayMs: 0,
- maxRetryDelayMs: 0
- },
- errorRetry: {
- maxNumRetry: 6,
- retryDelayMs: 1000,
- maxRetryDelayMs: 8000
- }
- }
- },
- steeringManifestLoadPolicy: {
- default: {
- maxTimeToFirstByteMs: 10000,
- maxLoadTimeMs: 20000,
- timeoutRetry: {
- maxNumRetry: 2,
- retryDelayMs: 0,
- maxRetryDelayMs: 0
- },
- errorRetry: {
- maxNumRetry: 1,
- retryDelayMs: 1000,
- maxRetryDelayMs: 8000
- }
- }
- },
- // These default settings are deprecated in favor of the above policies
- // and are maintained for backwards compatibility
- manifestLoadingTimeOut: 10000,
- manifestLoadingMaxRetry: 1,
- manifestLoadingRetryDelay: 1000,
- manifestLoadingMaxRetryTimeout: 64000,
- levelLoadingTimeOut: 10000,
- levelLoadingMaxRetry: 4,
- levelLoadingRetryDelay: 1000,
- levelLoadingMaxRetryTimeout: 64000,
- fragLoadingTimeOut: 20000,
- fragLoadingMaxRetry: 6,
- fragLoadingRetryDelay: 1000,
- fragLoadingMaxRetryTimeout: 64000
- }, timelineConfig()), {}, {
- subtitleStreamController: SubtitleStreamController ,
- subtitleTrackController: SubtitleTrackController ,
- timelineController: TimelineController ,
- audioStreamController: AudioStreamController ,
- audioTrackController: AudioTrackController ,
- emeController: EMEController ,
- cmcdController: CMCDController ,
- contentSteeringController: ContentSteeringController
- });
- function timelineConfig() {
- return {
- cueHandler: Cues,
- // used by timeline-controller
- enableWebVTT: true,
- // used by timeline-controller
- enableIMSC1: true,
- // used by timeline-controller
- enableCEA708Captions: true,
- // used by timeline-controller
- captionsTextTrack1Label: 'English',
- // used by timeline-controller
- captionsTextTrack1LanguageCode: 'en',
- // used by timeline-controller
- captionsTextTrack2Label: 'Spanish',
- // used by timeline-controller
- captionsTextTrack2LanguageCode: 'es',
- // used by timeline-controller
- captionsTextTrack3Label: 'Unknown CC',
- // used by timeline-controller
- captionsTextTrack3LanguageCode: '',
- // used by timeline-controller
- captionsTextTrack4Label: 'Unknown CC',
- // used by timeline-controller
- captionsTextTrack4LanguageCode: '',
- // used by timeline-controller
- renderTextTracksNatively: true
- };
- }
-
- /**
- * @ignore
- */
- function mergeConfig(defaultConfig, userConfig) {
- if ((userConfig.liveSyncDurationCount || userConfig.liveMaxLatencyDurationCount) && (userConfig.liveSyncDuration || userConfig.liveMaxLatencyDuration)) {
- throw new Error("Illegal hls.js config: don't mix up liveSyncDurationCount/liveMaxLatencyDurationCount and liveSyncDuration/liveMaxLatencyDuration");
- }
- if (userConfig.liveMaxLatencyDurationCount !== undefined && (userConfig.liveSyncDurationCount === undefined || userConfig.liveMaxLatencyDurationCount <= userConfig.liveSyncDurationCount)) {
- throw new Error('Illegal hls.js config: "liveMaxLatencyDurationCount" must be greater than "liveSyncDurationCount"');
- }
- if (userConfig.liveMaxLatencyDuration !== undefined && (userConfig.liveSyncDuration === undefined || userConfig.liveMaxLatencyDuration <= userConfig.liveSyncDuration)) {
- throw new Error('Illegal hls.js config: "liveMaxLatencyDuration" must be greater than "liveSyncDuration"');
- }
- var defaultsCopy = deepCpy(defaultConfig);
-
- // Backwards compatibility with deprecated config values
- var deprecatedSettingTypes = ['manifest', 'level', 'frag'];
- var deprecatedSettings = ['TimeOut', 'MaxRetry', 'RetryDelay', 'MaxRetryTimeout'];
- deprecatedSettingTypes.forEach(function (type) {
- var policyName = (type === 'level' ? 'playlist' : type) + "LoadPolicy";
- var policyNotSet = userConfig[policyName] === undefined;
- var report = [];
- deprecatedSettings.forEach(function (setting) {
- var deprecatedSetting = type + "Loading" + setting;
- var value = userConfig[deprecatedSetting];
- if (value !== undefined && policyNotSet) {
- report.push(deprecatedSetting);
- var settings = defaultsCopy[policyName].default;
- userConfig[policyName] = {
- default: settings
- };
- switch (setting) {
- case 'TimeOut':
- settings.maxLoadTimeMs = value;
- settings.maxTimeToFirstByteMs = value;
- break;
- case 'MaxRetry':
- settings.errorRetry.maxNumRetry = value;
- settings.timeoutRetry.maxNumRetry = value;
- break;
- case 'RetryDelay':
- settings.errorRetry.retryDelayMs = value;
- settings.timeoutRetry.retryDelayMs = value;
- break;
- case 'MaxRetryTimeout':
- settings.errorRetry.maxRetryDelayMs = value;
- settings.timeoutRetry.maxRetryDelayMs = value;
- break;
- }
- }
- });
- if (report.length) {
- logger.warn("hls.js config: \"" + report.join('", "') + "\" setting(s) are deprecated, use \"" + policyName + "\": " + JSON.stringify(userConfig[policyName]));
- }
- });
- return _objectSpread2(_objectSpread2({}, defaultsCopy), userConfig);
- }
- function deepCpy(obj) {
- if (obj && typeof obj === 'object') {
- if (Array.isArray(obj)) {
- return obj.map(deepCpy);
- }
- return Object.keys(obj).reduce(function (result, key) {
- result[key] = deepCpy(obj[key]);
- return result;
- }, {});
- }
- return obj;
- }
-
- /**
- * @ignore
- */
- function enableStreamingMode(config) {
- var currentLoader = config.loader;
- if (currentLoader !== FetchLoader && currentLoader !== XhrLoader) {
- // If a developer has configured their own loader, respect that choice
- logger.log('[config]: Custom loader detected, cannot enable progressive streaming');
- config.progressive = false;
- } else {
- var canStreamProgressively = fetchSupported();
- if (canStreamProgressively) {
- config.loader = FetchLoader;
- config.progressive = true;
- config.enableSoftwareAES = true;
- logger.log('[config]: Progressive streaming enabled, using FetchLoader');
- }
- }
- }
-
- var chromeOrFirefox;
- var LevelController = /*#__PURE__*/function (_BasePlaylistControll) {
- _inheritsLoose(LevelController, _BasePlaylistControll);
- function LevelController(hls, contentSteeringController) {
- var _this;
- _this = _BasePlaylistControll.call(this, hls, '[level-controller]') || this;
- _this._levels = [];
- _this._firstLevel = -1;
- _this._maxAutoLevel = -1;
- _this._startLevel = void 0;
- _this.currentLevel = null;
- _this.currentLevelIndex = -1;
- _this.manualLevelIndex = -1;
- _this.steering = void 0;
- _this.onParsedComplete = void 0;
- _this.steering = contentSteeringController;
- _this._registerListeners();
- return _this;
- }
- var _proto = LevelController.prototype;
- _proto._registerListeners = function _registerListeners() {
- var hls = this.hls;
- hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.on(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
- hls.on(Events.LEVEL_LOADED, this.onLevelLoaded, this);
- hls.on(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
- hls.on(Events.FRAG_BUFFERED, this.onFragBuffered, this);
- hls.on(Events.ERROR, this.onError, this);
- };
- _proto._unregisterListeners = function _unregisterListeners() {
- var hls = this.hls;
- hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.off(Events.MANIFEST_LOADED, this.onManifestLoaded, this);
- hls.off(Events.LEVEL_LOADED, this.onLevelLoaded, this);
- hls.off(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
- hls.off(Events.FRAG_BUFFERED, this.onFragBuffered, this);
- hls.off(Events.ERROR, this.onError, this);
- };
- _proto.destroy = function destroy() {
- this._unregisterListeners();
- this.steering = null;
- this.resetLevels();
- _BasePlaylistControll.prototype.destroy.call(this);
- };
- _proto.stopLoad = function stopLoad() {
- var levels = this._levels;
-
- // clean up live level details to force reload them, and reset load errors
- levels.forEach(function (level) {
- level.loadError = 0;
- level.fragmentError = 0;
- });
- _BasePlaylistControll.prototype.stopLoad.call(this);
- };
- _proto.resetLevels = function resetLevels() {
- this._startLevel = undefined;
- this.manualLevelIndex = -1;
- this.currentLevelIndex = -1;
- this.currentLevel = null;
- this._levels = [];
- this._maxAutoLevel = -1;
- };
- _proto.onManifestLoading = function onManifestLoading(event, data) {
- this.resetLevels();
- };
- _proto.onManifestLoaded = function onManifestLoaded(event, data) {
- var preferManagedMediaSource = this.hls.config.preferManagedMediaSource;
- var levels = [];
- var redundantSet = {};
- var generatePathwaySet = {};
- var resolutionFound = false;
- var videoCodecFound = false;
- var audioCodecFound = false;
- data.levels.forEach(function (levelParsed) {
- var _audioCodec, _videoCodec;
- var attributes = levelParsed.attrs;
-
- // erase audio codec info if browser does not support mp4a.40.34.
- // demuxer will autodetect codec and fallback to mpeg/audio
- var audioCodec = levelParsed.audioCodec,
- videoCodec = levelParsed.videoCodec;
- if (((_audioCodec = audioCodec) == null ? void 0 : _audioCodec.indexOf('mp4a.40.34')) !== -1) {
- chromeOrFirefox || (chromeOrFirefox = /chrome|firefox/i.test(navigator.userAgent));
- if (chromeOrFirefox) {
- levelParsed.audioCodec = audioCodec = undefined;
- }
- }
- if (audioCodec) {
- levelParsed.audioCodec = audioCodec = getCodecCompatibleName(audioCodec, preferManagedMediaSource);
- }
- if (((_videoCodec = videoCodec) == null ? void 0 : _videoCodec.indexOf('avc1')) === 0) {
- videoCodec = levelParsed.videoCodec = convertAVC1ToAVCOTI(videoCodec);
- }
-
- // only keep levels with supported audio/video codecs
- var width = levelParsed.width,
- height = levelParsed.height,
- unknownCodecs = levelParsed.unknownCodecs;
- resolutionFound || (resolutionFound = !!(width && height));
- videoCodecFound || (videoCodecFound = !!videoCodec);
- audioCodecFound || (audioCodecFound = !!audioCodec);
- if (unknownCodecs != null && unknownCodecs.length || audioCodec && !areCodecsMediaSourceSupported(audioCodec, 'audio', preferManagedMediaSource) || videoCodec && !areCodecsMediaSourceSupported(videoCodec, 'video', preferManagedMediaSource)) {
- return;
- }
- var CODECS = attributes.CODECS,
- FRAMERATE = attributes['FRAME-RATE'],
- HDCP = attributes['HDCP-LEVEL'],
- PATHWAY = attributes['PATHWAY-ID'],
- RESOLUTION = attributes.RESOLUTION,
- VIDEO_RANGE = attributes['VIDEO-RANGE'];
- var contentSteeringPrefix = (PATHWAY || '.') + "-";
- var levelKey = "" + contentSteeringPrefix + levelParsed.bitrate + "-" + RESOLUTION + "-" + FRAMERATE + "-" + CODECS + "-" + VIDEO_RANGE + "-" + HDCP;
- if (!redundantSet[levelKey]) {
- var level = new Level(levelParsed);
- redundantSet[levelKey] = level;
- generatePathwaySet[levelKey] = 1;
- levels.push(level);
- } else if (redundantSet[levelKey].uri !== levelParsed.url && !levelParsed.attrs['PATHWAY-ID']) {
- // Assign Pathway IDs to Redundant Streams (default Pathways is ".". Redundant Streams "..", "...", and so on.)
- // Content Steering controller to handles Pathway fallback on error
- var pathwayCount = generatePathwaySet[levelKey] += 1;
- levelParsed.attrs['PATHWAY-ID'] = new Array(pathwayCount + 1).join('.');
- var _level = new Level(levelParsed);
- redundantSet[levelKey] = _level;
- levels.push(_level);
- } else {
- redundantSet[levelKey].addGroupId('audio', attributes.AUDIO);
- redundantSet[levelKey].addGroupId('text', attributes.SUBTITLES);
- }
- });
- this.filterAndSortMediaOptions(levels, data, resolutionFound, videoCodecFound, audioCodecFound);
- };
- _proto.filterAndSortMediaOptions = function filterAndSortMediaOptions(filteredLevels, data, resolutionFound, videoCodecFound, audioCodecFound) {
- var _this2 = this;
- var audioTracks = [];
- var subtitleTracks = [];
- var levels = filteredLevels;
-
- // remove audio-only and invalid video-range levels if we also have levels with video codecs or RESOLUTION signalled
- if ((resolutionFound || videoCodecFound) && audioCodecFound) {
- levels = levels.filter(function (_ref) {
- var videoCodec = _ref.videoCodec,
- videoRange = _ref.videoRange,
- width = _ref.width,
- height = _ref.height;
- return (!!videoCodec || !!(width && height)) && isVideoRange(videoRange);
- });
- }
- if (levels.length === 0) {
- // Dispatch error after MANIFEST_LOADED is done propagating
- Promise.resolve().then(function () {
- if (_this2.hls) {
- if (data.levels.length) {
- _this2.warn("One or more CODECS in variant not supported: " + JSON.stringify(data.levels[0].attrs));
- }
- var error = new Error('no level with compatible codecs found in manifest');
- _this2.hls.trigger(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.MANIFEST_INCOMPATIBLE_CODECS_ERROR,
- fatal: true,
- url: data.url,
- error: error,
- reason: error.message
- });
- }
- });
- return;
- }
- if (data.audioTracks) {
- var preferManagedMediaSource = this.hls.config.preferManagedMediaSource;
- audioTracks = data.audioTracks.filter(function (track) {
- return !track.audioCodec || areCodecsMediaSourceSupported(track.audioCodec, 'audio', preferManagedMediaSource);
- });
- // Assign ids after filtering as array indices by group-id
- assignTrackIdsByGroup(audioTracks);
- }
- if (data.subtitles) {
- subtitleTracks = data.subtitles;
- assignTrackIdsByGroup(subtitleTracks);
- }
- // start bitrate is the first bitrate of the manifest
- var unsortedLevels = levels.slice(0);
- // sort levels from lowest to highest
- levels.sort(function (a, b) {
- if (a.attrs['HDCP-LEVEL'] !== b.attrs['HDCP-LEVEL']) {
- return (a.attrs['HDCP-LEVEL'] || '') > (b.attrs['HDCP-LEVEL'] || '') ? 1 : -1;
- }
- // sort on height before bitrate for cap-level-controller
- if (resolutionFound && a.height !== b.height) {
- return a.height - b.height;
- }
- if (a.frameRate !== b.frameRate) {
- return a.frameRate - b.frameRate;
- }
- if (a.videoRange !== b.videoRange) {
- return VideoRangeValues.indexOf(a.videoRange) - VideoRangeValues.indexOf(b.videoRange);
- }
- if (a.videoCodec !== b.videoCodec) {
- var valueA = videoCodecPreferenceValue(a.videoCodec);
- var valueB = videoCodecPreferenceValue(b.videoCodec);
- if (valueA !== valueB) {
- return valueB - valueA;
- }
- }
- if (a.uri === b.uri && a.codecSet !== b.codecSet) {
- var _valueA = codecsSetSelectionPreferenceValue(a.codecSet);
- var _valueB = codecsSetSelectionPreferenceValue(b.codecSet);
- if (_valueA !== _valueB) {
- return _valueB - _valueA;
- }
- }
- if (a.averageBitrate !== b.averageBitrate) {
- return a.averageBitrate - b.averageBitrate;
- }
- return 0;
- });
- var firstLevelInPlaylist = unsortedLevels[0];
- if (this.steering) {
- levels = this.steering.filterParsedLevels(levels);
- if (levels.length !== unsortedLevels.length) {
- for (var i = 0; i < unsortedLevels.length; i++) {
- if (unsortedLevels[i].pathwayId === levels[0].pathwayId) {
- firstLevelInPlaylist = unsortedLevels[i];
- break;
- }
- }
- }
- }
- this._levels = levels;
-
- // find index of first level in sorted levels
- for (var _i = 0; _i < levels.length; _i++) {
- if (levels[_i] === firstLevelInPlaylist) {
- var _this$hls$userConfig;
- this._firstLevel = _i;
- var firstLevelBitrate = firstLevelInPlaylist.bitrate;
- var bandwidthEstimate = this.hls.bandwidthEstimate;
- this.log("manifest loaded, " + levels.length + " level(s) found, first bitrate: " + firstLevelBitrate);
- // Update default bwe to first variant bitrate as long it has not been configured or set
- if (((_this$hls$userConfig = this.hls.userConfig) == null ? void 0 : _this$hls$userConfig.abrEwmaDefaultEstimate) === undefined) {
- var startingBwEstimate = Math.min(firstLevelBitrate, this.hls.config.abrEwmaDefaultEstimateMax);
- if (startingBwEstimate > bandwidthEstimate && bandwidthEstimate === hlsDefaultConfig.abrEwmaDefaultEstimate) {
- this.hls.bandwidthEstimate = startingBwEstimate;
- }
- }
- break;
- }
- }
-
- // Audio is only alternate if manifest include a URI along with the audio group tag,
- // and this is not an audio-only stream where levels contain audio-only
- var audioOnly = audioCodecFound && !videoCodecFound;
- var edata = {
- levels: levels,
- audioTracks: audioTracks,
- subtitleTracks: subtitleTracks,
- sessionData: data.sessionData,
- sessionKeys: data.sessionKeys,
- firstLevel: this._firstLevel,
- stats: data.stats,
- audio: audioCodecFound,
- video: videoCodecFound,
- altAudio: !audioOnly && audioTracks.some(function (t) {
- return !!t.url;
- })
- };
- this.hls.trigger(Events.MANIFEST_PARSED, edata);
-
- // Initiate loading after all controllers have received MANIFEST_PARSED
- if (this.hls.config.autoStartLoad || this.hls.forceStartLoad) {
- this.hls.startLoad(this.hls.config.startPosition);
- }
- };
- _proto.onError = function onError(event, data) {
- if (data.fatal || !data.context) {
- return;
- }
- if (data.context.type === PlaylistContextType.LEVEL && data.context.level === this.level) {
- this.checkRetry(data);
- }
- }
-
- // reset errors on the successful load of a fragment
- ;
- _proto.onFragBuffered = function onFragBuffered(event, _ref2) {
- var frag = _ref2.frag;
- if (frag !== undefined && frag.type === PlaylistLevelType.MAIN) {
- var el = frag.elementaryStreams;
- if (!Object.keys(el).some(function (type) {
- return !!el[type];
- })) {
- return;
- }
- var level = this._levels[frag.level];
- if (level != null && level.loadError) {
- this.log("Resetting level error count of " + level.loadError + " on frag buffered");
- level.loadError = 0;
- }
- }
- };
- _proto.onLevelLoaded = function onLevelLoaded(event, data) {
- var _data$deliveryDirecti2;
- var level = data.level,
- details = data.details;
- var curLevel = this._levels[level];
- if (!curLevel) {
- var _data$deliveryDirecti;
- this.warn("Invalid level index " + level);
- if ((_data$deliveryDirecti = data.deliveryDirectives) != null && _data$deliveryDirecti.skip) {
- details.deltaUpdateFailed = true;
- }
- return;
- }
-
- // only process level loaded events matching with expected level
- if (level === this.currentLevelIndex) {
- // reset level load error counter on successful level loaded only if there is no issues with fragments
- if (curLevel.fragmentError === 0) {
- curLevel.loadError = 0;
- }
- this.playlistLoaded(level, data, curLevel.details);
- } else if ((_data$deliveryDirecti2 = data.deliveryDirectives) != null && _data$deliveryDirecti2.skip) {
- // received a delta playlist update that cannot be merged
- details.deltaUpdateFailed = true;
- }
- };
- _proto.loadPlaylist = function loadPlaylist(hlsUrlParameters) {
- _BasePlaylistControll.prototype.loadPlaylist.call(this);
- var currentLevelIndex = this.currentLevelIndex;
- var currentLevel = this.currentLevel;
- if (currentLevel && this.shouldLoadPlaylist(currentLevel)) {
- var url = currentLevel.uri;
- if (hlsUrlParameters) {
- try {
- url = hlsUrlParameters.addDirectives(url);
- } catch (error) {
- this.warn("Could not construct new URL with HLS Delivery Directives: " + error);
- }
- }
- var pathwayId = currentLevel.attrs['PATHWAY-ID'];
- this.log("Loading level index " + currentLevelIndex + ((hlsUrlParameters == null ? void 0 : hlsUrlParameters.msn) !== undefined ? ' at sn ' + hlsUrlParameters.msn + ' part ' + hlsUrlParameters.part : '') + " with" + (pathwayId ? ' Pathway ' + pathwayId : '') + " " + url);
-
- // console.log('Current audio track group ID:', this.hls.audioTracks[this.hls.audioTrack].groupId);
- // console.log('New video quality level audio group id:', levelObject.attrs.AUDIO, level);
- this.clearTimer();
- this.hls.trigger(Events.LEVEL_LOADING, {
- url: url,
- level: currentLevelIndex,
- pathwayId: currentLevel.attrs['PATHWAY-ID'],
- id: 0,
- // Deprecated Level urlId
- deliveryDirectives: hlsUrlParameters || null
- });
- }
- };
- _proto.removeLevel = function removeLevel(levelIndex) {
- var _this3 = this,
- _this$currentLevel;
- var levels = this._levels.filter(function (level, index) {
- if (index !== levelIndex) {
- return true;
- }
- if (_this3.steering) {
- _this3.steering.removeLevel(level);
- }
- if (level === _this3.currentLevel) {
- _this3.currentLevel = null;
- _this3.currentLevelIndex = -1;
- if (level.details) {
- level.details.fragments.forEach(function (f) {
- return f.level = -1;
- });
- }
- }
- return false;
- });
- reassignFragmentLevelIndexes(levels);
- this._levels = levels;
- if (this.currentLevelIndex > -1 && (_this$currentLevel = this.currentLevel) != null && _this$currentLevel.details) {
- this.currentLevelIndex = this.currentLevel.details.fragments[0].level;
- }
- this.hls.trigger(Events.LEVELS_UPDATED, {
- levels: levels
- });
- };
- _proto.onLevelsUpdated = function onLevelsUpdated(event, _ref3) {
- var levels = _ref3.levels;
- this._levels = levels;
- };
- _proto.checkMaxAutoUpdated = function checkMaxAutoUpdated() {
- var _this$hls = this.hls,
- autoLevelCapping = _this$hls.autoLevelCapping,
- maxAutoLevel = _this$hls.maxAutoLevel,
- maxHdcpLevel = _this$hls.maxHdcpLevel;
- if (this._maxAutoLevel !== maxAutoLevel) {
- this._maxAutoLevel = maxAutoLevel;
- this.hls.trigger(Events.MAX_AUTO_LEVEL_UPDATED, {
- autoLevelCapping: autoLevelCapping,
- levels: this.levels,
- maxAutoLevel: maxAutoLevel,
- minAutoLevel: this.hls.minAutoLevel,
- maxHdcpLevel: maxHdcpLevel
- });
- }
- };
- _createClass(LevelController, [{
- key: "levels",
- get: function get() {
- if (this._levels.length === 0) {
- return null;
- }
- return this._levels;
- }
- }, {
- key: "level",
- get: function get() {
- return this.currentLevelIndex;
- },
- set: function set(newLevel) {
- var levels = this._levels;
- if (levels.length === 0) {
- return;
- }
- // check if level idx is valid
- if (newLevel < 0 || newLevel >= levels.length) {
- // invalid level id given, trigger error
- var error = new Error('invalid level idx');
- var fatal = newLevel < 0;
- this.hls.trigger(Events.ERROR, {
- type: ErrorTypes.OTHER_ERROR,
- details: ErrorDetails.LEVEL_SWITCH_ERROR,
- level: newLevel,
- fatal: fatal,
- error: error,
- reason: error.message
- });
- if (fatal) {
- return;
- }
- newLevel = Math.min(newLevel, levels.length - 1);
- }
- var lastLevelIndex = this.currentLevelIndex;
- var lastLevel = this.currentLevel;
- var lastPathwayId = lastLevel ? lastLevel.attrs['PATHWAY-ID'] : undefined;
- var level = levels[newLevel];
- var pathwayId = level.attrs['PATHWAY-ID'];
- this.currentLevelIndex = newLevel;
- this.currentLevel = level;
- if (lastLevelIndex === newLevel && level.details && lastLevel && lastPathwayId === pathwayId) {
- return;
- }
- this.log("Switching to level " + newLevel + " (" + (level.height ? level.height + 'p ' : '') + (level.videoRange ? level.videoRange + ' ' : '') + (level.codecSet ? level.codecSet + ' ' : '') + "@" + level.bitrate + ")" + (pathwayId ? ' with Pathway ' + pathwayId : '') + " from level " + lastLevelIndex + (lastPathwayId ? ' with Pathway ' + lastPathwayId : ''));
- var levelSwitchingData = {
- level: newLevel,
- attrs: level.attrs,
- details: level.details,
- bitrate: level.bitrate,
- averageBitrate: level.averageBitrate,
- maxBitrate: level.maxBitrate,
- realBitrate: level.realBitrate,
- width: level.width,
- height: level.height,
- codecSet: level.codecSet,
- audioCodec: level.audioCodec,
- videoCodec: level.videoCodec,
- audioGroups: level.audioGroups,
- subtitleGroups: level.subtitleGroups,
- loaded: level.loaded,
- loadError: level.loadError,
- fragmentError: level.fragmentError,
- name: level.name,
- id: level.id,
- uri: level.uri,
- url: level.url,
- urlId: 0,
- audioGroupIds: level.audioGroupIds,
- textGroupIds: level.textGroupIds
- };
- this.hls.trigger(Events.LEVEL_SWITCHING, levelSwitchingData);
- // check if we need to load playlist for this level
- var levelDetails = level.details;
- if (!levelDetails || levelDetails.live) {
- // level not retrieved yet, or live playlist we need to (re)load it
- var hlsUrlParameters = this.switchParams(level.uri, lastLevel == null ? void 0 : lastLevel.details, levelDetails);
- this.loadPlaylist(hlsUrlParameters);
- }
- }
- }, {
- key: "manualLevel",
- get: function get() {
- return this.manualLevelIndex;
- },
- set: function set(newLevel) {
- this.manualLevelIndex = newLevel;
- if (this._startLevel === undefined) {
- this._startLevel = newLevel;
- }
- if (newLevel !== -1) {
- this.level = newLevel;
- }
- }
- }, {
- key: "firstLevel",
- get: function get() {
- return this._firstLevel;
- },
- set: function set(newLevel) {
- this._firstLevel = newLevel;
- }
- }, {
- key: "startLevel",
- get: function get() {
- // Setting hls.startLevel (this._startLevel) overrides config.startLevel
- if (this._startLevel === undefined) {
- var configStartLevel = this.hls.config.startLevel;
- if (configStartLevel !== undefined) {
- return configStartLevel;
- }
- return this.hls.firstAutoLevel;
- }
- return this._startLevel;
- },
- set: function set(newLevel) {
- this._startLevel = newLevel;
- }
- }, {
- key: "nextLoadLevel",
- get: function get() {
- if (this.manualLevelIndex !== -1) {
- return this.manualLevelIndex;
- } else {
- return this.hls.nextAutoLevel;
- }
- },
- set: function set(nextLevel) {
- this.level = nextLevel;
- if (this.manualLevelIndex === -1) {
- this.hls.nextAutoLevel = nextLevel;
- }
- }
- }]);
- return LevelController;
- }(BasePlaylistController);
- function assignTrackIdsByGroup(tracks) {
- var groups = {};
- tracks.forEach(function (track) {
- var groupId = track.groupId || '';
- track.id = groups[groupId] = groups[groupId] || 0;
- groups[groupId]++;
- });
- }
-
- var KeyLoader = /*#__PURE__*/function () {
- function KeyLoader(config) {
- this.config = void 0;
- this.keyUriToKeyInfo = {};
- this.emeController = null;
- this.config = config;
- }
- var _proto = KeyLoader.prototype;
- _proto.abort = function abort(type) {
- for (var uri in this.keyUriToKeyInfo) {
- var loader = this.keyUriToKeyInfo[uri].loader;
- if (loader) {
- var _loader$context;
- if (type && type !== ((_loader$context = loader.context) == null ? void 0 : _loader$context.frag.type)) {
- return;
- }
- loader.abort();
- }
- }
- };
- _proto.detach = function detach() {
- for (var uri in this.keyUriToKeyInfo) {
- var keyInfo = this.keyUriToKeyInfo[uri];
- // Remove cached EME keys on detach
- if (keyInfo.mediaKeySessionContext || keyInfo.decryptdata.isCommonEncryption) {
- delete this.keyUriToKeyInfo[uri];
- }
- }
- };
- _proto.destroy = function destroy() {
- this.detach();
- for (var uri in this.keyUriToKeyInfo) {
- var loader = this.keyUriToKeyInfo[uri].loader;
- if (loader) {
- loader.destroy();
- }
- }
- this.keyUriToKeyInfo = {};
- };
- _proto.createKeyLoadError = function createKeyLoadError(frag, details, error, networkDetails, response) {
- if (details === void 0) {
- details = ErrorDetails.KEY_LOAD_ERROR;
- }
- return new LoadError({
- type: ErrorTypes.NETWORK_ERROR,
- details: details,
- fatal: false,
- frag: frag,
- response: response,
- error: error,
- networkDetails: networkDetails
- });
- };
- _proto.loadClear = function loadClear(loadingFrag, encryptedFragments) {
- var _this = this;
- if (this.emeController && this.config.emeEnabled) {
- // access key-system with nearest key on start (loaidng frag is unencrypted)
- var sn = loadingFrag.sn,
- cc = loadingFrag.cc;
- var _loop = function _loop() {
- var frag = encryptedFragments[i];
- if (cc <= frag.cc && (sn === 'initSegment' || frag.sn === 'initSegment' || sn < frag.sn)) {
- _this.emeController.selectKeySystemFormat(frag).then(function (keySystemFormat) {
- frag.setKeyFormat(keySystemFormat);
- });
- return 1; // break
- }
- };
- for (var i = 0; i < encryptedFragments.length; i++) {
- if (_loop()) break;
- }
- }
- };
- _proto.load = function load(frag) {
- var _this2 = this;
- if (!frag.decryptdata && frag.encrypted && this.emeController) {
- // Multiple keys, but none selected, resolve in eme-controller
- return this.emeController.selectKeySystemFormat(frag).then(function (keySystemFormat) {
- return _this2.loadInternal(frag, keySystemFormat);
- });
- }
- return this.loadInternal(frag);
- };
- _proto.loadInternal = function loadInternal(frag, keySystemFormat) {
- var _keyInfo, _keyInfo2;
- if (keySystemFormat) {
- frag.setKeyFormat(keySystemFormat);
- }
- var decryptdata = frag.decryptdata;
- if (!decryptdata) {
- var error = new Error(keySystemFormat ? "Expected frag.decryptdata to be defined after setting format " + keySystemFormat : 'Missing decryption data on fragment in onKeyLoading');
- return Promise.reject(this.createKeyLoadError(frag, ErrorDetails.KEY_LOAD_ERROR, error));
- }
- var uri = decryptdata.uri;
- if (!uri) {
- return Promise.reject(this.createKeyLoadError(frag, ErrorDetails.KEY_LOAD_ERROR, new Error("Invalid key URI: \"" + uri + "\"")));
- }
- var keyInfo = this.keyUriToKeyInfo[uri];
- if ((_keyInfo = keyInfo) != null && _keyInfo.decryptdata.key) {
- decryptdata.key = keyInfo.decryptdata.key;
- return Promise.resolve({
- frag: frag,
- keyInfo: keyInfo
- });
- }
- // Return key load promise as long as it does not have a mediakey session with an unusable key status
- if ((_keyInfo2 = keyInfo) != null && _keyInfo2.keyLoadPromise) {
- var _keyInfo$mediaKeySess;
- switch ((_keyInfo$mediaKeySess = keyInfo.mediaKeySessionContext) == null ? void 0 : _keyInfo$mediaKeySess.keyStatus) {
- case undefined:
- case 'status-pending':
- case 'usable':
- case 'usable-in-future':
- return keyInfo.keyLoadPromise.then(function (keyLoadedData) {
- // Return the correct fragment with updated decryptdata key and loaded keyInfo
- decryptdata.key = keyLoadedData.keyInfo.decryptdata.key;
- return {
- frag: frag,
- keyInfo: keyInfo
- };
- });
- }
- // If we have a key session and status and it is not pending or usable, continue
- // This will go back to the eme-controller for expired keys to get a new keyLoadPromise
- }
-
- // Load the key or return the loading promise
- keyInfo = this.keyUriToKeyInfo[uri] = {
- decryptdata: decryptdata,
- keyLoadPromise: null,
- loader: null,
- mediaKeySessionContext: null
- };
- switch (decryptdata.method) {
- case 'ISO-23001-7':
- case 'SAMPLE-AES':
- case 'SAMPLE-AES-CENC':
- case 'SAMPLE-AES-CTR':
- if (decryptdata.keyFormat === 'identity') {
- // loadKeyHTTP handles http(s) and data URLs
- return this.loadKeyHTTP(keyInfo, frag);
- }
- return this.loadKeyEME(keyInfo, frag);
- case 'AES-128':
- return this.loadKeyHTTP(keyInfo, frag);
- default:
- return Promise.reject(this.createKeyLoadError(frag, ErrorDetails.KEY_LOAD_ERROR, new Error("Key supplied with unsupported METHOD: \"" + decryptdata.method + "\"")));
- }
- };
- _proto.loadKeyEME = function loadKeyEME(keyInfo, frag) {
- var keyLoadedData = {
- frag: frag,
- keyInfo: keyInfo
- };
- if (this.emeController && this.config.emeEnabled) {
- var keySessionContextPromise = this.emeController.loadKey(keyLoadedData);
- if (keySessionContextPromise) {
- return (keyInfo.keyLoadPromise = keySessionContextPromise.then(function (keySessionContext) {
- keyInfo.mediaKeySessionContext = keySessionContext;
- return keyLoadedData;
- })).catch(function (error) {
- // Remove promise for license renewal or retry
- keyInfo.keyLoadPromise = null;
- throw error;
- });
- }
- }
- return Promise.resolve(keyLoadedData);
- };
- _proto.loadKeyHTTP = function loadKeyHTTP(keyInfo, frag) {
- var _this3 = this;
- var config = this.config;
- var Loader = config.loader;
- var keyLoader = new Loader(config);
- frag.keyLoader = keyInfo.loader = keyLoader;
- return keyInfo.keyLoadPromise = new Promise(function (resolve, reject) {
- var loaderContext = {
- keyInfo: keyInfo,
- frag: frag,
- responseType: 'arraybuffer',
- url: keyInfo.decryptdata.uri
- };
-
- // maxRetry is 0 so that instead of retrying the same key on the same variant multiple times,
- // key-loader will trigger an error and rely on stream-controller to handle retry logic.
- // this will also align retry logic with fragment-loader
- var loadPolicy = config.keyLoadPolicy.default;
- var loaderConfig = {
- loadPolicy: loadPolicy,
- timeout: loadPolicy.maxLoadTimeMs,
- maxRetry: 0,
- retryDelay: 0,
- maxRetryDelay: 0
- };
- var loaderCallbacks = {
- onSuccess: function onSuccess(response, stats, context, networkDetails) {
- var frag = context.frag,
- keyInfo = context.keyInfo,
- uri = context.url;
- if (!frag.decryptdata || keyInfo !== _this3.keyUriToKeyInfo[uri]) {
- return reject(_this3.createKeyLoadError(frag, ErrorDetails.KEY_LOAD_ERROR, new Error('after key load, decryptdata unset or changed'), networkDetails));
- }
- keyInfo.decryptdata.key = frag.decryptdata.key = new Uint8Array(response.data);
-
- // detach fragment key loader on load success
- frag.keyLoader = null;
- keyInfo.loader = null;
- resolve({
- frag: frag,
- keyInfo: keyInfo
- });
- },
- onError: function onError(response, context, networkDetails, stats) {
- _this3.resetLoader(context);
- reject(_this3.createKeyLoadError(frag, ErrorDetails.KEY_LOAD_ERROR, new Error("HTTP Error " + response.code + " loading key " + response.text), networkDetails, _objectSpread2({
- url: loaderContext.url,
- data: undefined
- }, response)));
- },
- onTimeout: function onTimeout(stats, context, networkDetails) {
- _this3.resetLoader(context);
- reject(_this3.createKeyLoadError(frag, ErrorDetails.KEY_LOAD_TIMEOUT, new Error('key loading timed out'), networkDetails));
- },
- onAbort: function onAbort(stats, context, networkDetails) {
- _this3.resetLoader(context);
- reject(_this3.createKeyLoadError(frag, ErrorDetails.INTERNAL_ABORTED, new Error('key loading aborted'), networkDetails));
- }
- };
- keyLoader.load(loaderContext, loaderConfig, loaderCallbacks);
- });
- };
- _proto.resetLoader = function resetLoader(context) {
- var frag = context.frag,
- keyInfo = context.keyInfo,
- uri = context.url;
- var loader = keyInfo.loader;
- if (frag.keyLoader === loader) {
- frag.keyLoader = null;
- keyInfo.loader = null;
- }
- delete this.keyUriToKeyInfo[uri];
- if (loader) {
- loader.destroy();
- }
- };
- return KeyLoader;
- }();
-
- function getSourceBuffer() {
- return self.SourceBuffer || self.WebKitSourceBuffer;
- }
- function isMSESupported() {
- var mediaSource = getMediaSource();
- if (!mediaSource) {
- return false;
- }
-
- // if SourceBuffer is exposed ensure its API is valid
- // Older browsers do not expose SourceBuffer globally so checking SourceBuffer.prototype is impossible
- var sourceBuffer = getSourceBuffer();
- return !sourceBuffer || sourceBuffer.prototype && typeof sourceBuffer.prototype.appendBuffer === 'function' && typeof sourceBuffer.prototype.remove === 'function';
- }
- function isSupported() {
- if (!isMSESupported()) {
- return false;
- }
- var mediaSource = getMediaSource();
- return typeof (mediaSource == null ? void 0 : mediaSource.isTypeSupported) === 'function' && (['avc1.42E01E,mp4a.40.2', 'av01.0.01M.08', 'vp09.00.50.08'].some(function (codecsForVideoContainer) {
- return mediaSource.isTypeSupported(mimeTypeForCodec(codecsForVideoContainer, 'video'));
- }) || ['mp4a.40.2', 'fLaC'].some(function (codecForAudioContainer) {
- return mediaSource.isTypeSupported(mimeTypeForCodec(codecForAudioContainer, 'audio'));
- }));
- }
- function changeTypeSupported() {
- var _sourceBuffer$prototy;
- var sourceBuffer = getSourceBuffer();
- return typeof (sourceBuffer == null ? void 0 : (_sourceBuffer$prototy = sourceBuffer.prototype) == null ? void 0 : _sourceBuffer$prototy.changeType) === 'function';
- }
-
- var STALL_MINIMUM_DURATION_MS = 250;
- var MAX_START_GAP_JUMP = 2.0;
- var SKIP_BUFFER_HOLE_STEP_SECONDS = 0.1;
- var SKIP_BUFFER_RANGE_START = 0.05;
- var GapController = /*#__PURE__*/function () {
- function GapController(config, media, fragmentTracker, hls) {
- this.config = void 0;
- this.media = null;
- this.fragmentTracker = void 0;
- this.hls = void 0;
- this.nudgeRetry = 0;
- this.stallReported = false;
- this.stalled = null;
- this.moved = false;
- this.seeking = false;
- this.config = config;
- this.media = media;
- this.fragmentTracker = fragmentTracker;
- this.hls = hls;
- }
- var _proto = GapController.prototype;
- _proto.destroy = function destroy() {
- this.media = null;
- // @ts-ignore
- this.hls = this.fragmentTracker = null;
- }
-
- /**
- * Checks if the playhead is stuck within a gap, and if so, attempts to free it.
- * A gap is an unbuffered range between two buffered ranges (or the start and the first buffered range).
- *
- * @param lastCurrentTime - Previously read playhead position
- */;
- _proto.poll = function poll(lastCurrentTime, activeFrag) {
- var config = this.config,
- media = this.media,
- stalled = this.stalled;
- if (media === null) {
- return;
- }
- var currentTime = media.currentTime,
- seeking = media.seeking;
- var seeked = this.seeking && !seeking;
- var beginSeek = !this.seeking && seeking;
- this.seeking = seeking;
-
- // The playhead is moving, no-op
- if (currentTime !== lastCurrentTime) {
- this.moved = true;
- if (!seeking) {
- this.nudgeRetry = 0;
- }
- if (stalled !== null) {
- // The playhead is now moving, but was previously stalled
- if (this.stallReported) {
- var _stalledDuration = self.performance.now() - stalled;
- logger.warn("playback not stuck anymore @" + currentTime + ", after " + Math.round(_stalledDuration) + "ms");
- this.stallReported = false;
- }
- this.stalled = null;
- }
- return;
- }
-
- // Clear stalled state when beginning or finishing seeking so that we don't report stalls coming out of a seek
- if (beginSeek || seeked) {
- this.stalled = null;
- return;
- }
-
- // The playhead should not be moving
- if (media.paused && !seeking || media.ended || media.playbackRate === 0 || !BufferHelper.getBuffered(media).length) {
- this.nudgeRetry = 0;
- return;
- }
- var bufferInfo = BufferHelper.bufferInfo(media, currentTime, 0);
- var nextStart = bufferInfo.nextStart || 0;
- if (seeking) {
- // Waiting for seeking in a buffered range to complete
- var hasEnoughBuffer = bufferInfo.len > MAX_START_GAP_JUMP;
- // Next buffered range is too far ahead to jump to while still seeking
- var noBufferGap = !nextStart || activeFrag && activeFrag.start <= currentTime || nextStart - currentTime > MAX_START_GAP_JUMP && !this.fragmentTracker.getPartialFragment(currentTime);
- if (hasEnoughBuffer || noBufferGap) {
- return;
- }
- // Reset moved state when seeking to a point in or before a gap
- this.moved = false;
- }
-
- // Skip start gaps if we haven't played, but the last poll detected the start of a stall
- // The addition poll gives the browser a chance to jump the gap for us
- if (!this.moved && this.stalled !== null) {
- var _level$details;
- // There is no playable buffer (seeked, waiting for buffer)
- var isBuffered = bufferInfo.len > 0;
- if (!isBuffered && !nextStart) {
- return;
- }
- // Jump start gaps within jump threshold
- var startJump = Math.max(nextStart, bufferInfo.start || 0) - currentTime;
-
- // When joining a live stream with audio tracks, account for live playlist window sliding by allowing
- // a larger jump over start gaps caused by the audio-stream-controller buffering a start fragment
- // that begins over 1 target duration after the video start position.
- var level = this.hls.levels ? this.hls.levels[this.hls.currentLevel] : null;
- var isLive = level == null ? void 0 : (_level$details = level.details) == null ? void 0 : _level$details.live;
- var maxStartGapJump = isLive ? level.details.targetduration * 2 : MAX_START_GAP_JUMP;
- var partialOrGap = this.fragmentTracker.getPartialFragment(currentTime);
- if (startJump > 0 && (startJump <= maxStartGapJump || partialOrGap)) {
- if (!media.paused) {
- this._trySkipBufferHole(partialOrGap);
- }
- return;
- }
- }
-
- // Start tracking stall time
- var tnow = self.performance.now();
- if (stalled === null) {
- this.stalled = tnow;
- return;
- }
- var stalledDuration = tnow - stalled;
- if (!seeking && stalledDuration >= STALL_MINIMUM_DURATION_MS) {
- // Report stalling after trying to fix
- this._reportStall(bufferInfo);
- if (!this.media) {
- return;
- }
- }
- var bufferedWithHoles = BufferHelper.bufferInfo(media, currentTime, config.maxBufferHole);
- this._tryFixBufferStall(bufferedWithHoles, stalledDuration);
- }
-
- /**
- * Detects and attempts to fix known buffer stalling issues.
- * @param bufferInfo - The properties of the current buffer.
- * @param stalledDurationMs - The amount of time Hls.js has been stalling for.
- * @private
- */;
- _proto._tryFixBufferStall = function _tryFixBufferStall(bufferInfo, stalledDurationMs) {
- var config = this.config,
- fragmentTracker = this.fragmentTracker,
- media = this.media;
- if (media === null) {
- return;
- }
- var currentTime = media.currentTime;
- var partial = fragmentTracker.getPartialFragment(currentTime);
- if (partial) {
- // Try to skip over the buffer hole caused by a partial fragment
- // This method isn't limited by the size of the gap between buffered ranges
- var targetTime = this._trySkipBufferHole(partial);
- // we return here in this case, meaning
- // the branch below only executes when we haven't seeked to a new position
- if (targetTime || !this.media) {
- return;
- }
- }
-
- // if we haven't had to skip over a buffer hole of a partial fragment
- // we may just have to "nudge" the playlist as the browser decoding/rendering engine
- // needs to cross some sort of threshold covering all source-buffers content
- // to start playing properly.
- if ((bufferInfo.len > config.maxBufferHole || bufferInfo.nextStart && bufferInfo.nextStart - currentTime < config.maxBufferHole) && stalledDurationMs > config.highBufferWatchdogPeriod * 1000) {
- logger.warn('Trying to nudge playhead over buffer-hole');
- // Try to nudge currentTime over a buffer hole if we've been stalling for the configured amount of seconds
- // We only try to jump the hole if it's under the configured size
- // Reset stalled so to rearm watchdog timer
- this.stalled = null;
- this._tryNudgeBuffer();
- }
- }
-
- /**
- * Triggers a BUFFER_STALLED_ERROR event, but only once per stall period.
- * @param bufferLen - The playhead distance from the end of the current buffer segment.
- * @private
- */;
- _proto._reportStall = function _reportStall(bufferInfo) {
- var hls = this.hls,
- media = this.media,
- stallReported = this.stallReported;
- if (!stallReported && media) {
- // Report stalled error once
- this.stallReported = true;
- var error = new Error("Playback stalling at @" + media.currentTime + " due to low buffer (" + JSON.stringify(bufferInfo) + ")");
- logger.warn(error.message);
- hls.trigger(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.BUFFER_STALLED_ERROR,
- fatal: false,
- error: error,
- buffer: bufferInfo.len
- });
- }
- }
-
- /**
- * Attempts to fix buffer stalls by jumping over known gaps caused by partial fragments
- * @param partial - The partial fragment found at the current time (where playback is stalling).
- * @private
- */;
- _proto._trySkipBufferHole = function _trySkipBufferHole(partial) {
- var config = this.config,
- hls = this.hls,
- media = this.media;
- if (media === null) {
- return 0;
- }
-
- // Check if currentTime is between unbuffered regions of partial fragments
- var currentTime = media.currentTime;
- var bufferInfo = BufferHelper.bufferInfo(media, currentTime, 0);
- var startTime = currentTime < bufferInfo.start ? bufferInfo.start : bufferInfo.nextStart;
- if (startTime) {
- var bufferStarved = bufferInfo.len <= config.maxBufferHole;
- var waiting = bufferInfo.len > 0 && bufferInfo.len < 1 && media.readyState < 3;
- var gapLength = startTime - currentTime;
- if (gapLength > 0 && (bufferStarved || waiting)) {
- // Only allow large gaps to be skipped if it is a start gap, or all fragments in skip range are partial
- if (gapLength > config.maxBufferHole) {
- var fragmentTracker = this.fragmentTracker;
- var startGap = false;
- if (currentTime === 0) {
- var startFrag = fragmentTracker.getAppendedFrag(0, PlaylistLevelType.MAIN);
- if (startFrag && startTime < startFrag.end) {
- startGap = true;
- }
- }
- if (!startGap) {
- var startProvisioned = partial || fragmentTracker.getAppendedFrag(currentTime, PlaylistLevelType.MAIN);
- if (startProvisioned) {
- var moreToLoad = false;
- var pos = startProvisioned.end;
- while (pos < startTime) {
- var provisioned = fragmentTracker.getPartialFragment(pos);
- if (provisioned) {
- pos += provisioned.duration;
- } else {
- moreToLoad = true;
- break;
- }
- }
- if (moreToLoad) {
- return 0;
- }
- }
- }
- }
- var targetTime = Math.max(startTime + SKIP_BUFFER_RANGE_START, currentTime + SKIP_BUFFER_HOLE_STEP_SECONDS);
- logger.warn("skipping hole, adjusting currentTime from " + currentTime + " to " + targetTime);
- this.moved = true;
- this.stalled = null;
- media.currentTime = targetTime;
- if (partial && !partial.gap) {
- var error = new Error("fragment loaded with buffer holes, seeking from " + currentTime + " to " + targetTime);
- hls.trigger(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.BUFFER_SEEK_OVER_HOLE,
- fatal: false,
- error: error,
- reason: error.message,
- frag: partial
- });
- }
- return targetTime;
- }
- }
- return 0;
- }
-
- /**
- * Attempts to fix buffer stalls by advancing the mediaElement's current time by a small amount.
- * @private
- */;
- _proto._tryNudgeBuffer = function _tryNudgeBuffer() {
- var config = this.config,
- hls = this.hls,
- media = this.media,
- nudgeRetry = this.nudgeRetry;
- if (media === null) {
- return;
- }
- var currentTime = media.currentTime;
- this.nudgeRetry++;
- if (nudgeRetry < config.nudgeMaxRetry) {
- var targetTime = currentTime + (nudgeRetry + 1) * config.nudgeOffset;
- // playback stalled in buffered area ... let's nudge currentTime to try to overcome this
- var error = new Error("Nudging 'currentTime' from " + currentTime + " to " + targetTime);
- logger.warn(error.message);
- media.currentTime = targetTime;
- hls.trigger(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.BUFFER_NUDGE_ON_STALL,
- error: error,
- fatal: false
- });
- } else {
- var _error = new Error("Playhead still not moving while enough data buffered @" + currentTime + " after " + config.nudgeMaxRetry + " nudges");
- logger.error(_error.message);
- hls.trigger(Events.ERROR, {
- type: ErrorTypes.MEDIA_ERROR,
- details: ErrorDetails.BUFFER_STALLED_ERROR,
- error: _error,
- fatal: true
- });
- }
- };
- return GapController;
- }();
-
- var TICK_INTERVAL = 100; // how often to tick in ms
- var StreamController = /*#__PURE__*/function (_BaseStreamController) {
- _inheritsLoose(StreamController, _BaseStreamController);
- function StreamController(hls, fragmentTracker, keyLoader) {
- var _this;
- _this = _BaseStreamController.call(this, hls, fragmentTracker, keyLoader, '[stream-controller]', PlaylistLevelType.MAIN) || this;
- _this.audioCodecSwap = false;
- _this.gapController = null;
- _this.level = -1;
- _this._forceStartLoad = false;
- _this.altAudio = false;
- _this.audioOnly = false;
- _this.fragPlaying = null;
- _this.onvplaying = null;
- _this.onvseeked = null;
- _this.fragLastKbps = 0;
- _this.couldBacktrack = false;
- _this.backtrackFragment = null;
- _this.audioCodecSwitch = false;
- _this.videoBuffer = null;
- _this._registerListeners();
- return _this;
- }
- var _proto = StreamController.prototype;
- _proto._registerListeners = function _registerListeners() {
- var hls = this.hls;
- hls.on(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- hls.on(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- hls.on(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.on(Events.MANIFEST_PARSED, this.onManifestParsed, this);
- hls.on(Events.LEVEL_LOADING, this.onLevelLoading, this);
- hls.on(Events.LEVEL_LOADED, this.onLevelLoaded, this);
- hls.on(Events.FRAG_LOAD_EMERGENCY_ABORTED, this.onFragLoadEmergencyAborted, this);
- hls.on(Events.ERROR, this.onError, this);
- hls.on(Events.AUDIO_TRACK_SWITCHING, this.onAudioTrackSwitching, this);
- hls.on(Events.AUDIO_TRACK_SWITCHED, this.onAudioTrackSwitched, this);
- hls.on(Events.BUFFER_CREATED, this.onBufferCreated, this);
- hls.on(Events.BUFFER_FLUSHED, this.onBufferFlushed, this);
- hls.on(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
- hls.on(Events.FRAG_BUFFERED, this.onFragBuffered, this);
- };
- _proto._unregisterListeners = function _unregisterListeners() {
- var hls = this.hls;
- hls.off(Events.MEDIA_ATTACHED, this.onMediaAttached, this);
- hls.off(Events.MEDIA_DETACHING, this.onMediaDetaching, this);
- hls.off(Events.MANIFEST_LOADING, this.onManifestLoading, this);
- hls.off(Events.MANIFEST_PARSED, this.onManifestParsed, this);
- hls.off(Events.LEVEL_LOADED, this.onLevelLoaded, this);
- hls.off(Events.FRAG_LOAD_EMERGENCY_ABORTED, this.onFragLoadEmergencyAborted, this);
- hls.off(Events.ERROR, this.onError, this);
- hls.off(Events.AUDIO_TRACK_SWITCHING, this.onAudioTrackSwitching, this);
- hls.off(Events.AUDIO_TRACK_SWITCHED, this.onAudioTrackSwitched, this);
- hls.off(Events.BUFFER_CREATED, this.onBufferCreated, this);
- hls.off(Events.BUFFER_FLUSHED, this.onBufferFlushed, this);
- hls.off(Events.LEVELS_UPDATED, this.onLevelsUpdated, this);
- hls.off(Events.FRAG_BUFFERED, this.onFragBuffered, this);
- };
- _proto.onHandlerDestroying = function onHandlerDestroying() {
- this._unregisterListeners();
- _BaseStreamController.prototype.onHandlerDestroying.call(this);
- };
- _proto.startLoad = function startLoad(startPosition) {
- if (this.levels) {
- var lastCurrentTime = this.lastCurrentTime,
- hls = this.hls;
- this.stopLoad();
- this.setInterval(TICK_INTERVAL);
- this.level = -1;
- if (!this.startFragRequested) {
- // determine load level
- var startLevel = hls.startLevel;
- if (startLevel === -1) {
- if (hls.config.testBandwidth && this.levels.length > 1) {
- // -1 : guess start Level by doing a bitrate test by loading first fragment of lowest quality level
- startLevel = 0;
- this.bitrateTest = true;
- } else {
- startLevel = hls.firstAutoLevel;
- }
- }
- // set new level to playlist loader : this will trigger start level load
- // hls.nextLoadLevel remains until it is set to a new value or until a new frag is successfully loaded
- hls.nextLoadLevel = startLevel;
- this.level = hls.loadLevel;
- this.loadedmetadata = false;
- }
- // if startPosition undefined but lastCurrentTime set, set startPosition to last currentTime
- if (lastCurrentTime > 0 && startPosition === -1) {
- this.log("Override startPosition with lastCurrentTime @" + lastCurrentTime.toFixed(3));
- startPosition = lastCurrentTime;
- }
- this.state = State.IDLE;
- this.nextLoadPosition = this.startPosition = this.lastCurrentTime = startPosition;
- this.tick();
- } else {
- this._forceStartLoad = true;
- this.state = State.STOPPED;
- }
- };
- _proto.stopLoad = function stopLoad() {
- this._forceStartLoad = false;
- _BaseStreamController.prototype.stopLoad.call(this);
- };
- _proto.doTick = function doTick() {
- switch (this.state) {
- case State.WAITING_LEVEL:
- {
- var levels = this.levels,
- level = this.level;
- var currentLevel = levels == null ? void 0 : levels[level];
- var details = currentLevel == null ? void 0 : currentLevel.details;
- if (details && (!details.live || this.levelLastLoaded === currentLevel)) {
- if (this.waitForCdnTuneIn(details)) {
- break;
- }
- this.state = State.IDLE;
- break;
- } else if (this.hls.nextLoadLevel !== this.level) {
- this.state = State.IDLE;
- break;
- }
- break;
- }
- case State.FRAG_LOADING_WAITING_RETRY:
- {
- var _this$media;
- var now = self.performance.now();
- var retryDate = this.retryDate;
- // if current time is gt than retryDate, or if media seeking let's switch to IDLE state to retry loading
- if (!retryDate || now >= retryDate || (_this$media = this.media) != null && _this$media.seeking) {
- var _levels = this.levels,
- _level = this.level;
- var _currentLevel = _levels == null ? void 0 : _levels[_level];
- this.resetStartWhenNotLoaded(_currentLevel || null);
- this.state = State.IDLE;
- }
- }
- break;
- }
- if (this.state === State.IDLE) {
- this.doTickIdle();
- }
- this.onTickEnd();
- };
- _proto.onTickEnd = function onTickEnd() {
- _BaseStreamController.prototype.onTickEnd.call(this);
- this.checkBuffer();
- this.checkFragmentChanged();
- };
- _proto.doTickIdle = function doTickIdle() {
- var hls = this.hls,
- levelLastLoaded = this.levelLastLoaded,
- levels = this.levels,
- media = this.media;
-
- // if start level not parsed yet OR
- // if video not attached AND start fragment already requested OR start frag prefetch not enabled
- // exit loop, as we either need more info (level not parsed) or we need media to be attached to load new fragment
- if (levelLastLoaded === null || !media && (this.startFragRequested || !hls.config.startFragPrefetch)) {
- return;
- }
-
- // If the "main" level is audio-only but we are loading an alternate track in the same group, do not load anything
- if (this.altAudio && this.audioOnly) {
- return;
- }
- var level = hls.nextLoadLevel;
- if (!(levels != null && levels[level])) {
- return;
- }
- var levelInfo = levels[level];
-
- // if buffer length is less than maxBufLen try to load a new fragment
-
- var bufferInfo = this.getMainFwdBufferInfo();
- if (bufferInfo === null) {
- return;
- }
- var lastDetails = this.getLevelDetails();
- if (lastDetails && this._streamEnded(bufferInfo, lastDetails)) {
- var data = {};
- if (this.altAudio) {
- data.type = 'video';
- }
- this.hls.trigger(Events.BUFFER_EOS, data);
- this.state = State.ENDED;
- return;
- }
-
- // set next load level : this will trigger a playlist load if needed
- if (hls.loadLevel !== level && hls.manualLevel === -1) {
- this.log("Adapting to level " + level + " from level " + this.level);
- }
- this.level = hls.nextLoadLevel = level;
- var levelDetails = levelInfo.details;
- // if level info not retrieved yet, switch state and wait for level retrieval
- // if live playlist, ensure that new playlist has been refreshed to avoid loading/try to load
- // a useless and outdated fragment (that might even introduce load error if it is already out of the live playlist)
- if (!levelDetails || this.state === State.WAITING_LEVEL || levelDetails.live && this.levelLastLoaded !== levelInfo) {
- this.level = level;
- this.state = State.WAITING_LEVEL;
- return;
- }
- var bufferLen = bufferInfo.len;
-
- // compute max Buffer Length that we could get from this load level, based on level bitrate. don't buffer more than 60 MB and more than 30s
- var maxBufLen = this.getMaxBufferLength(levelInfo.maxBitrate);
-
- // Stay idle if we are still with buffer margins
- if (bufferLen >= maxBufLen) {
- return;
- }
- if (this.backtrackFragment && this.backtrackFragment.start > bufferInfo.end) {
- this.backtrackFragment = null;
- }
- var targetBufferTime = this.backtrackFragment ? this.backtrackFragment.start : bufferInfo.end;
- var frag = this.getNextFragment(targetBufferTime, levelDetails);
- // Avoid backtracking by loading an earlier segment in streams with segments that do not start with a key frame (flagged by `couldBacktrack`)
- if (this.couldBacktrack && !this.fragPrevious && frag && frag.sn !== 'initSegment' && this.fragmentTracker.getState(frag) !== FragmentState.OK) {
- var _this$backtrackFragme;
- var backtrackSn = ((_this$backtrackFragme = this.backtrackFragment) != null ? _this$backtrackFragme : frag).sn;
- var fragIdx = backtrackSn - levelDetails.startSN;
- var backtrackFrag = levelDetails.fragments[fragIdx - 1];
- if (backtrackFrag && frag.cc === backtrackFrag.cc) {
- frag = backtrackFrag;
- this.fragmentTracker.removeFragment(backtrackFrag);
- }
- } else if (this.backtrackFragment && bufferInfo.len) {
- this.backtrackFragment = null;
- }
- // Avoid loop loading by using nextLoadPosition set for backtracking and skipping consecutive GAP tags
- if (frag && this.isLoopLoading(frag, targetBufferTime)) {
- var gapStart = frag.gap;
- if (!gapStart) {
- // Cleanup the fragment tracker before trying to find the next unbuffered fragment
- var type = this.audioOnly && !this.altAudio ? ElementaryStreamTypes.AUDIO : ElementaryStreamTypes.VIDEO;
- var mediaBuffer = (type === ElementaryStreamTypes.VIDEO ? this.videoBuffer : this.mediaBuffer) || this.media;
- if (mediaBuffer) {
- this.afterBufferFlushed(mediaBuffer, type, PlaylistLevelType.MAIN);
- }
- }
- frag = this.getNextFragmentLoopLoading(frag, levelDetails, bufferInfo, PlaylistLevelType.MAIN, maxBufLen);
- }
- if (!frag) {
- return;
- }
- if (frag.initSegment && !frag.initSegment.data && !this.bitrateTest) {
- frag = frag.initSegment;
- }
- this.loadFragment(frag, levelInfo, targetBufferTime);
- };
- _proto.loadFragment = function loadFragment(frag, level, targetBufferTime) {
- // Check if fragment is not loaded
- var fragState = this.fragmentTracker.getState(frag);
- this.fragCurrent = frag;
- if (fragState === FragmentState.NOT_LOADED || fragState === FragmentState.PARTIAL) {
- if (frag.sn === 'initSegment') {
- this._loadInitSegment(frag, level);
- } else if (this.bitrateTest) {
- this.log("Fragment " + frag.sn + " of level " + frag.level + " is being downloaded to test bitrate and will not be buffered");
- this._loadBitrateTestFrag(frag, level);
- } else {
- this.startFragRequested = true;
- _BaseStreamController.prototype.loadFragment.call(this, frag, level, targetBufferTime);
- }
- } else {
- this.clearTrackerIfNeeded(frag);
- }
- };
- _proto.getBufferedFrag = function getBufferedFrag(position) {
- return this.fragmentTracker.getBufferedFrag(position, PlaylistLevelType.MAIN);
- };
- _proto.followingBufferedFrag = function followingBufferedFrag(frag) {
- if (frag) {
- // try to get range of next fragment (500ms after this range)
- return this.getBufferedFrag(frag.end + 0.5);
- }
- return null;
- }
-
- /*
- on immediate level switch :
- - pause playback if playing
- - cancel any pending load request
- - and trigger a buffer flush
- */;
- _proto.immediateLevelSwitch = function immediateLevelSwitch() {
- this.abortCurrentFrag();
- this.flushMainBuffer(0, Number.POSITIVE_INFINITY);
- }
-
- /**
- * try to switch ASAP without breaking video playback:
- * in order to ensure smooth but quick level switching,
- * we need to find the next flushable buffer range
- * we should take into account new segment fetch time
- */;
- _proto.nextLevelSwitch = function nextLevelSwitch() {
- var levels = this.levels,
- media = this.media;
- // ensure that media is defined and that metadata are available (to retrieve currentTime)
- if (media != null && media.readyState) {
- var fetchdelay;
- var fragPlayingCurrent = this.getAppendedFrag(media.currentTime);
- if (fragPlayingCurrent && fragPlayingCurrent.start > 1) {
- // flush buffer preceding current fragment (flush until current fragment start offset)
- // minus 1s to avoid video freezing, that could happen if we flush keyframe of current video ...
- this.flushMainBuffer(0, fragPlayingCurrent.start - 1);
- }
- var levelDetails = this.getLevelDetails();
- if (levelDetails != null && levelDetails.live) {
- var bufferInfo = this.getMainFwdBufferInfo();
- // Do not flush in live stream with low buffer
- if (!bufferInfo || bufferInfo.len < levelDetails.targetduration * 2) {
- return;
- }
- }
- if (!media.paused && levels) {
- // add a safety delay of 1s
- var nextLevelId = this.hls.nextLoadLevel;
- var nextLevel = levels[nextLevelId];
- var fragLastKbps = this.fragLastKbps;
- if (fragLastKbps && this.fragCurrent) {
- fetchdelay = this.fragCurrent.duration * nextLevel.maxBitrate / (1000 * fragLastKbps) + 1;
- } else {
- fetchdelay = 0;
- }
- } else {
- fetchdelay = 0;
- }
- // this.log('fetchdelay:'+fetchdelay);
- // find buffer range that will be reached once new fragment will be fetched
- var bufferedFrag = this.getBufferedFrag(media.currentTime + fetchdelay);
- if (bufferedFrag) {
- // we can flush buffer range following this one without stalling playback
- var nextBufferedFrag = this.followingBufferedFrag(bufferedFrag);
- if (nextBufferedFrag) {
- // if we are here, we can also cancel any loading/demuxing in progress, as they are useless
- this.abortCurrentFrag();
- // start flush position is in next buffered frag. Leave some padding for non-independent segments and smoother playback.
- var maxStart = nextBufferedFrag.maxStartPTS ? nextBufferedFrag.maxStartPTS : nextBufferedFrag.start;
- var fragDuration = nextBufferedFrag.duration;
- var startPts = Math.max(bufferedFrag.end, maxStart + Math.min(Math.max(fragDuration - this.config.maxFragLookUpTolerance, fragDuration * (this.couldBacktrack ? 0.5 : 0.125)), fragDuration * (this.couldBacktrack ? 0.75 : 0.25)));
- this.flushMainBuffer(startPts, Number.POSITIVE_INFINITY);
- }
- }
- }
- };
- _proto.abortCurrentFrag = function abortCurrentFrag() {
- var fragCurrent = this.fragCurrent;
- this.fragCurrent = null;
- this.backtrackFragment = null;
- if (fragCurrent) {
- fragCurrent.abortRequests();
- this.fragmentTracker.removeFragment(fragCurrent);
- }
- switch (this.state) {
- case State.KEY_LOADING:
- case State.FRAG_LOADING:
- case State.FRAG_LOADING_WAITING_RETRY:
- case State.PARSING:
- case State.PARSED:
- this.state = State.IDLE;
- break;
- }
- this.nextLoadPosition = this.getLoadPosition();
- };
- _proto.flushMainBuffer = function flushMainBuffer(startOffset, endOffset) {
- _BaseStreamController.prototype.flushMainBuffer.call(this, startOffset, endOffset, this.altAudio ? 'video' : null);
- };
- _proto.onMediaAttached = function onMediaAttached(event, data) {
- _BaseStreamController.prototype.onMediaAttached.call(this, event, data);
- var media = data.media;
- this.onvplaying = this.onMediaPlaying.bind(this);
- this.onvseeked = this.onMediaSeeked.bind(this);
- media.addEventListener('playing', this.onvplaying);
- media.addEventListener('seeked', this.onvseeked);
- this.gapController = new GapController(this.config, media, this.fragmentTracker, this.hls);
- };
- _proto.onMediaDetaching = function onMediaDetaching() {
- var media = this.media;
- if (media && this.onvplaying && this.onvseeked) {
- media.removeEventListener('playing', this.onvplaying);
- media.removeEventListener('seeked', this.onvseeked);
- this.onvplaying = this.onvseeked = null;
- this.videoBuffer = null;
- }
- this.fragPlaying = null;
- if (this.gapController) {
- this.gapController.destroy();
- this.gapController = null;
- }
- _BaseStreamController.prototype.onMediaDetaching.call(this);
- };
- _proto.onMediaPlaying = function onMediaPlaying() {
- // tick to speed up FRAG_CHANGED triggering
- this.tick();
- };
- _proto.onMediaSeeked = function onMediaSeeked() {
- var media = this.media;
- var currentTime = media ? media.currentTime : null;
- if (isFiniteNumber(currentTime)) {
- this.log("Media seeked to " + currentTime.toFixed(3));
- }
-
- // If seeked was issued before buffer was appended do not tick immediately
- var bufferInfo = this.getMainFwdBufferInfo();
- if (bufferInfo === null || bufferInfo.len === 0) {
- this.warn("Main forward buffer length on \"seeked\" event " + (bufferInfo ? bufferInfo.len : 'empty') + ")");
- return;
- }
-
- // tick to speed up FRAG_CHANGED triggering
- this.tick();
- };
- _proto.onManifestLoading = function onManifestLoading() {
- // reset buffer on manifest loading
- this.log('Trigger BUFFER_RESET');
- this.hls.trigger(Events.BUFFER_RESET, undefined);
- this.fragmentTracker.removeAllFragments();
- this.couldBacktrack = false;
- this.startPosition = this.lastCurrentTime = this.fragLastKbps = 0;
- this.levels = this.fragPlaying = this.backtrackFragment = this.levelLastLoaded = null;
- this.altAudio = this.audioOnly = this.startFragRequested = false;
- };
- _proto.onManifestParsed = function onManifestParsed(event, data) {
- // detect if we have different kind of audio codecs used amongst playlists
- var aac = false;
- var heaac = false;
- data.levels.forEach(function (level) {
- var codec = level.audioCodec;
- if (codec) {
- aac = aac || codec.indexOf('mp4a.40.2') !== -1;
- heaac = heaac || codec.indexOf('mp4a.40.5') !== -1;
- }
- });
- this.audioCodecSwitch = aac && heaac && !changeTypeSupported();
- if (this.audioCodecSwitch) {
- this.log('Both AAC/HE-AAC audio found in levels; declaring level codec as HE-AAC');
- }
- this.levels = data.levels;
- this.startFragRequested = false;
- };
- _proto.onLevelLoading = function onLevelLoading(event, data) {
- var levels = this.levels;
- if (!levels || this.state !== State.IDLE) {
- return;
- }
- var level = levels[data.level];
- if (!level.details || level.details.live && this.levelLastLoaded !== level || this.waitForCdnTuneIn(level.details)) {
- this.state = State.WAITING_LEVEL;
- }
- };
- _proto.onLevelLoaded = function onLevelLoaded(event, data) {
- var _curLevel$details;
- var levels = this.levels;
- var newLevelId = data.level;
- var newDetails = data.details;
- var duration = newDetails.totalduration;
- if (!levels) {
- this.warn("Levels were reset while loading level " + newLevelId);
- return;
- }
- this.log("Level " + newLevelId + " loaded [" + newDetails.startSN + "," + newDetails.endSN + "]" + (newDetails.lastPartSn ? "[part-" + newDetails.lastPartSn + "-" + newDetails.lastPartIndex + "]" : '') + ", cc [" + newDetails.startCC + ", " + newDetails.endCC + "] duration:" + duration);
- var curLevel = levels[newLevelId];
- var fragCurrent = this.fragCurrent;
- if (fragCurrent && (this.state === State.FRAG_LOADING || this.state === State.FRAG_LOADING_WAITING_RETRY)) {
- if (fragCurrent.level !== data.level && fragCurrent.loader) {
- this.abortCurrentFrag();
- }
- }
- var sliding = 0;
- if (newDetails.live || (_curLevel$details = curLevel.details) != null && _curLevel$details.live) {
- var _this$levelLastLoaded;
- this.checkLiveUpdate(newDetails);
- if (newDetails.deltaUpdateFailed) {
- return;
- }
- sliding = this.alignPlaylists(newDetails, curLevel.details, (_this$levelLastLoaded = this.levelLastLoaded) == null ? void 0 : _this$levelLastLoaded.details);
- }
- // override level info
- curLevel.details = newDetails;
- this.levelLastLoaded = curLevel;
- this.hls.trigger(Events.LEVEL_UPDATED, {
- details: newDetails,
- level: newLevelId
- });
-
- // only switch back to IDLE state if we were waiting for level to start downloading a new fragment
- if (this.state === State.WAITING_LEVEL) {
- if (this.waitForCdnTuneIn(newDetails)) {
- // Wait for Low-Latency CDN Tune-in
- return;
- }
- this.state = State.IDLE;
- }
- if (!this.startFragRequested) {
- this.setStartPosition(newDetails, sliding);
- } else if (newDetails.live) {
- this.synchronizeToLiveEdge(newDetails);
- }
-
- // trigger handler right now
- this.tick();
- };
- _proto._handleFragmentLoadProgress = function _handleFragmentLoadProgress(data) {
- var _frag$initSegment;
- var frag = data.frag,
- part = data.part,
- payload = data.payload;
- var levels = this.levels;
- if (!levels) {
- this.warn("Levels were reset while fragment load was in progress. Fragment " + frag.sn + " of level " + frag.level + " will not be buffered");
- return;
- }
- var currentLevel = levels[frag.level];
- var details = currentLevel.details;
- if (!details) {
- this.warn("Dropping fragment " + frag.sn + " of level " + frag.level + " after level details were reset");
- this.fragmentTracker.removeFragment(frag);
- return;
- }
- var videoCodec = currentLevel.videoCodec;
-
- // time Offset is accurate if level PTS is known, or if playlist is not sliding (not live)
- var accurateTimeOffset = details.PTSKnown || !details.live;
- var initSegmentData = (_frag$initSegment = frag.initSegment) == null ? void 0 : _frag$initSegment.data;
- var audioCodec = this._getAudioCodec(currentLevel);
-
- // transmux the MPEG-TS data to ISO-BMFF segments
- // this.log(`Transmuxing ${frag.sn} of [${details.startSN} ,${details.endSN}],level ${frag.level}, cc ${frag.cc}`);
- var transmuxer = this.transmuxer = this.transmuxer || new TransmuxerInterface(this.hls, PlaylistLevelType.MAIN, this._handleTransmuxComplete.bind(this), this._handleTransmuxerFlush.bind(this));
- var partIndex = part ? part.index : -1;
- var partial = partIndex !== -1;
- var chunkMeta = new ChunkMetadata(frag.level, frag.sn, frag.stats.chunkCount, payload.byteLength, partIndex, partial);
- var initPTS = this.initPTS[frag.cc];
- transmuxer.push(payload, initSegmentData, audioCodec, videoCodec, frag, part, details.totalduration, accurateTimeOffset, chunkMeta, initPTS);
- };
- _proto.onAudioTrackSwitching = function onAudioTrackSwitching(event, data) {
- // if any URL found on new audio track, it is an alternate audio track
- var fromAltAudio = this.altAudio;
- var altAudio = !!data.url;
- // if we switch on main audio, ensure that main fragment scheduling is synced with media.buffered
- // don't do anything if we switch to alt audio: audio stream controller is handling it.
- // we will just have to change buffer scheduling on audioTrackSwitched
- if (!altAudio) {
- if (this.mediaBuffer !== this.media) {
- this.log('Switching on main audio, use media.buffered to schedule main fragment loading');
- this.mediaBuffer = this.media;
- var fragCurrent = this.fragCurrent;
- // we need to refill audio buffer from main: cancel any frag loading to speed up audio switch
- if (fragCurrent) {
- this.log('Switching to main audio track, cancel main fragment load');
- fragCurrent.abortRequests();
- this.fragmentTracker.removeFragment(fragCurrent);
- }
- // destroy transmuxer to force init segment generation (following audio switch)
- this.resetTransmuxer();
- // switch to IDLE state to load new fragment
- this.resetLoadingState();
- } else if (this.audioOnly) {
- // Reset audio transmuxer so when switching back to main audio we're not still appending where we left off
- this.resetTransmuxer();
- }
- var hls = this.hls;
- // If switching from alt to main audio, flush all audio and trigger track switched
- if (fromAltAudio) {
- hls.trigger(Events.BUFFER_FLUSHING, {
- startOffset: 0,
- endOffset: Number.POSITIVE_INFINITY,
- type: null
- });
- this.fragmentTracker.removeAllFragments();
- }
- hls.trigger(Events.AUDIO_TRACK_SWITCHED, data);
- }
- };
- _proto.onAudioTrackSwitched = function onAudioTrackSwitched(event, data) {
- var trackId = data.id;
- var altAudio = !!this.hls.audioTracks[trackId].url;
- if (altAudio) {
- var videoBuffer = this.videoBuffer;
- // if we switched on alternate audio, ensure that main fragment scheduling is synced with video sourcebuffer buffered
- if (videoBuffer && this.mediaBuffer !== videoBuffer) {
- this.log('Switching on alternate audio, use video.buffered to schedule main fragment loading');
- this.mediaBuffer = videoBuffer;
- }
- }
- this.altAudio = altAudio;
- this.tick();
- };
- _proto.onBufferCreated = function onBufferCreated(event, data) {
- var tracks = data.tracks;
- var mediaTrack;
- var name;
- var alternate = false;
- for (var type in tracks) {
- var track = tracks[type];
- if (track.id === 'main') {
- name = type;
- mediaTrack = track;
- // keep video source buffer reference
- if (type === 'video') {
- var videoTrack = tracks[type];
- if (videoTrack) {
- this.videoBuffer = videoTrack.buffer;
- }
- }
- } else {
- alternate = true;
- }
- }
- if (alternate && mediaTrack) {
- this.log("Alternate track found, use " + name + ".buffered to schedule main fragment loading");
- this.mediaBuffer = mediaTrack.buffer;
- } else {
- this.mediaBuffer = this.media;
- }
- };
- _proto.onFragBuffered = function onFragBuffered(event, data) {
- var frag = data.frag,
- part = data.part;
- if (frag && frag.type !== PlaylistLevelType.MAIN) {
- return;
- }
- if (this.fragContextChanged(frag)) {
- // If a level switch was requested while a fragment was buffering, it will emit the FRAG_BUFFERED event upon completion
- // Avoid setting state back to IDLE, since that will interfere with a level switch
- this.warn("Fragment " + frag.sn + (part ? ' p: ' + part.index : '') + " of level " + frag.level + " finished buffering, but was aborted. state: " + this.state);
- if (this.state === State.PARSED) {
- this.state = State.IDLE;
- }
- return;
- }
- var stats = part ? part.stats : frag.stats;
- this.fragLastKbps = Math.round(8 * stats.total / (stats.buffering.end - stats.loading.first));
- if (frag.sn !== 'initSegment') {
- this.fragPrevious = frag;
- }
- this.fragBufferedComplete(frag, part);
- };
- _proto.onError = function onError(event, data) {
- var _data$context;
- if (data.fatal) {
- this.state = State.ERROR;
- return;
- }
- switch (data.details) {
- case ErrorDetails.FRAG_GAP:
- case ErrorDetails.FRAG_PARSING_ERROR:
- case ErrorDetails.FRAG_DECRYPT_ERROR:
- case ErrorDetails.FRAG_LOAD_ERROR:
- case ErrorDetails.FRAG_LOAD_TIMEOUT:
- case ErrorDetails.KEY_LOAD_ERROR:
- case ErrorDetails.KEY_LOAD_TIMEOUT:
- this.onFragmentOrKeyLoadError(PlaylistLevelType.MAIN, data);
- break;
- case ErrorDetails.LEVEL_LOAD_ERROR:
- case ErrorDetails.LEVEL_LOAD_TIMEOUT:
- case ErrorDetails.LEVEL_PARSING_ERROR:
- // in case of non fatal error while loading level, if level controller is not retrying to load level, switch back to IDLE
- if (!data.levelRetry && this.state === State.WAITING_LEVEL && ((_data$context = data.context) == null ? void 0 : _data$context.type) === PlaylistContextType.LEVEL) {
- this.state = State.IDLE;
- }
- break;
- case ErrorDetails.BUFFER_APPEND_ERROR:
- case ErrorDetails.BUFFER_FULL_ERROR:
- if (!data.parent || data.parent !== 'main') {
- return;
- }
- if (data.details === ErrorDetails.BUFFER_APPEND_ERROR) {
- this.resetLoadingState();
- return;
- }
- if (this.reduceLengthAndFlushBuffer(data)) {
- this.flushMainBuffer(0, Number.POSITIVE_INFINITY);
- }
- break;
- case ErrorDetails.INTERNAL_EXCEPTION:
- this.recoverWorkerError(data);
- break;
- }
- }
-
- // Checks the health of the buffer and attempts to resolve playback stalls.
- ;
- _proto.checkBuffer = function checkBuffer() {
- var media = this.media,
- gapController = this.gapController;
- if (!media || !gapController || !media.readyState) {
- // Exit early if we don't have media or if the media hasn't buffered anything yet (readyState 0)
- return;
- }
- if (this.loadedmetadata || !BufferHelper.getBuffered(media).length) {
- // Resolve gaps using the main buffer, whose ranges are the intersections of the A/V sourcebuffers
- var activeFrag = this.state !== State.IDLE ? this.fragCurrent : null;
- gapController.poll(this.lastCurrentTime, activeFrag);
- }
- this.lastCurrentTime = media.currentTime;
- };
- _proto.onFragLoadEmergencyAborted = function onFragLoadEmergencyAborted() {
- this.state = State.IDLE;
- // if loadedmetadata is not set, it means that we are emergency switch down on first frag
- // in that case, reset startFragRequested flag
- if (!this.loadedmetadata) {
- this.startFragRequested = false;
- this.nextLoadPosition = this.startPosition;
- }
- this.tickImmediate();
- };
- _proto.onBufferFlushed = function onBufferFlushed(event, _ref) {
- var type = _ref.type;
- if (type !== ElementaryStreamTypes.AUDIO || this.audioOnly && !this.altAudio) {
- var mediaBuffer = (type === ElementaryStreamTypes.VIDEO ? this.videoBuffer : this.mediaBuffer) || this.media;
- this.afterBufferFlushed(mediaBuffer, type, PlaylistLevelType.MAIN);
- this.tick();
- }
- };
- _proto.onLevelsUpdated = function onLevelsUpdated(event, data) {
- if (this.level > -1 && this.fragCurrent) {
- this.level = this.fragCurrent.level;
- }
- this.levels = data.levels;
- };
- _proto.swapAudioCodec = function swapAudioCodec() {
- this.audioCodecSwap = !this.audioCodecSwap;
- }
-
- /**
- * Seeks to the set startPosition if not equal to the mediaElement's current time.
- */;
- _proto.seekToStartPos = function seekToStartPos() {
- var media = this.media;
- if (!media) {
- return;
- }
- var currentTime = media.currentTime;
- var startPosition = this.startPosition;
- // only adjust currentTime if different from startPosition or if startPosition not buffered
- // at that stage, there should be only one buffered range, as we reach that code after first fragment has been buffered
- if (startPosition >= 0 && currentTime < startPosition) {
- if (media.seeking) {
- this.log("could not seek to " + startPosition + ", already seeking at " + currentTime);
- return;
- }
- var buffered = BufferHelper.getBuffered(media);
- var bufferStart = buffered.length ? buffered.start(0) : 0;
- var delta = bufferStart - startPosition;
- if (delta > 0 && (delta < this.config.maxBufferHole || delta < this.config.maxFragLookUpTolerance)) {
- this.log("adjusting start position by " + delta + " to match buffer start");
- startPosition += delta;
- this.startPosition = startPosition;
- }
- this.log("seek to target start position " + startPosition + " from current time " + currentTime);
- media.currentTime = startPosition;
- }
- };
- _proto._getAudioCodec = function _getAudioCodec(currentLevel) {
- var audioCodec = this.config.defaultAudioCodec || currentLevel.audioCodec;
- if (this.audioCodecSwap && audioCodec) {
- this.log('Swapping audio codec');
- if (audioCodec.indexOf('mp4a.40.5') !== -1) {
- audioCodec = 'mp4a.40.2';
- } else {
- audioCodec = 'mp4a.40.5';
- }
- }
- return audioCodec;
- };
- _proto._loadBitrateTestFrag = function _loadBitrateTestFrag(frag, level) {
- var _this2 = this;
- frag.bitrateTest = true;
- this._doFragLoad(frag, level).then(function (data) {
- var hls = _this2.hls;
- if (!data || _this2.fragContextChanged(frag)) {
- return;
- }
- level.fragmentError = 0;
- _this2.state = State.IDLE;
- _this2.startFragRequested = false;
- _this2.bitrateTest = false;
- var stats = frag.stats;
- // Bitrate tests fragments are neither parsed nor buffered
- stats.parsing.start = stats.parsing.end = stats.buffering.start = stats.buffering.end = self.performance.now();
- hls.trigger(Events.FRAG_LOADED, data);
- frag.bitrateTest = false;
- });
- };
- _proto._handleTransmuxComplete = function _handleTransmuxComplete(transmuxResult) {
- var _id3$samples;
- var id = 'main';
- var hls = this.hls;
- var remuxResult = transmuxResult.remuxResult,
- chunkMeta = transmuxResult.chunkMeta;
- var context = this.getCurrentContext(chunkMeta);
- if (!context) {
- this.resetWhenMissingContext(chunkMeta);
- return;
- }
- var frag = context.frag,
- part = context.part,
- level = context.level;
- var video = remuxResult.video,
- text = remuxResult.text,
- id3 = remuxResult.id3,
- initSegment = remuxResult.initSegment;
- var details = level.details;
- // The audio-stream-controller handles audio buffering if Hls.js is playing an alternate audio track
- var audio = this.altAudio ? undefined : remuxResult.audio;
-
- // Check if the current fragment has been aborted. We check this by first seeing if we're still playing the current level.
- // If we are, subsequently check if the currently loading fragment (fragCurrent) has changed.
- if (this.fragContextChanged(frag)) {
- this.fragmentTracker.removeFragment(frag);
- return;
- }
- this.state = State.PARSING;
- if (initSegment) {
- if (initSegment != null && initSegment.tracks) {
- var mapFragment = frag.initSegment || frag;
- this._bufferInitSegment(level, initSegment.tracks, mapFragment, chunkMeta);
- hls.trigger(Events.FRAG_PARSING_INIT_SEGMENT, {
- frag: mapFragment,
- id: id,
- tracks: initSegment.tracks
- });
- }
-
- // This would be nice if Number.isFinite acted as a typeguard, but it doesn't. See: https://github.com/Microsoft/TypeScript/issues/10038
- var initPTS = initSegment.initPTS;
- var timescale = initSegment.timescale;
- if (isFiniteNumber(initPTS)) {
- this.initPTS[frag.cc] = {
- baseTime: initPTS,
- timescale: timescale
- };
- hls.trigger(Events.INIT_PTS_FOUND, {
- frag: frag,
- id: id,
- initPTS: initPTS,
- timescale: timescale
- });
- }
- }
-
- // Avoid buffering if backtracking this fragment
- if (video && details && frag.sn !== 'initSegment') {
- var prevFrag = details.fragments[frag.sn - 1 - details.startSN];
- var isFirstFragment = frag.sn === details.startSN;
- var isFirstInDiscontinuity = !prevFrag || frag.cc > prevFrag.cc;
- if (remuxResult.independent !== false) {
- var startPTS = video.startPTS,
- endPTS = video.endPTS,
- startDTS = video.startDTS,
- endDTS = video.endDTS;
- if (part) {
- part.elementaryStreams[video.type] = {
- startPTS: startPTS,
- endPTS: endPTS,
- startDTS: startDTS,
- endDTS: endDTS
- };
- } else {
- if (video.firstKeyFrame && video.independent && chunkMeta.id === 1 && !isFirstInDiscontinuity) {
- this.couldBacktrack = true;
- }
- if (video.dropped && video.independent) {
- // Backtrack if dropped frames create a gap after currentTime
-
- var bufferInfo = this.getMainFwdBufferInfo();
- var targetBufferTime = (bufferInfo ? bufferInfo.end : this.getLoadPosition()) + this.config.maxBufferHole;
- var startTime = video.firstKeyFramePTS ? video.firstKeyFramePTS : startPTS;
- if (!isFirstFragment && targetBufferTime < startTime - this.config.maxBufferHole && !isFirstInDiscontinuity) {
- this.backtrack(frag);
- return;
- } else if (isFirstInDiscontinuity) {
- // Mark segment with a gap to avoid loop loading
- frag.gap = true;
- }
- // Set video stream start to fragment start so that truncated samples do not distort the timeline, and mark it partial
- frag.setElementaryStreamInfo(video.type, frag.start, endPTS, frag.start, endDTS, true);
- } else if (isFirstFragment && startPTS > MAX_START_GAP_JUMP) {
- // Mark segment with a gap to skip large start gap
- frag.gap = true;
- }
- }
- frag.setElementaryStreamInfo(video.type, startPTS, endPTS, startDTS, endDTS);
- if (this.backtrackFragment) {
- this.backtrackFragment = frag;
- }
- this.bufferFragmentData(video, frag, part, chunkMeta, isFirstFragment || isFirstInDiscontinuity);
- } else if (isFirstFragment || isFirstInDiscontinuity) {
- // Mark segment with a gap to avoid loop loading
- frag.gap = true;
- } else {
- this.backtrack(frag);
- return;
- }
- }
- if (audio) {
- var _startPTS = audio.startPTS,
- _endPTS = audio.endPTS,
- _startDTS = audio.startDTS,
- _endDTS = audio.endDTS;
- if (part) {
- part.elementaryStreams[ElementaryStreamTypes.AUDIO] = {
- startPTS: _startPTS,
- endPTS: _endPTS,
- startDTS: _startDTS,
- endDTS: _endDTS
- };
- }
- frag.setElementaryStreamInfo(ElementaryStreamTypes.AUDIO, _startPTS, _endPTS, _startDTS, _endDTS);
- this.bufferFragmentData(audio, frag, part, chunkMeta);
- }
- if (details && id3 != null && (_id3$samples = id3.samples) != null && _id3$samples.length) {
- var emittedID3 = {
- id: id,
- frag: frag,
- details: details,
- samples: id3.samples
- };
- hls.trigger(Events.FRAG_PARSING_METADATA, emittedID3);
- }
- if (details && text) {
- var emittedText = {
- id: id,
- frag: frag,
- details: details,
- samples: text.samples
- };
- hls.trigger(Events.FRAG_PARSING_USERDATA, emittedText);
- }
- };
- _proto._bufferInitSegment = function _bufferInitSegment(currentLevel, tracks, frag, chunkMeta) {
- var _this3 = this;
- if (this.state !== State.PARSING) {
- return;
- }
- this.audioOnly = !!tracks.audio && !tracks.video;
-
- // if audio track is expected to come from audio stream controller, discard any coming from main
- if (this.altAudio && !this.audioOnly) {
- delete tracks.audio;
- }
- // include levelCodec in audio and video tracks
- var audio = tracks.audio,
- video = tracks.video,
- audiovideo = tracks.audiovideo;
- if (audio) {
- var audioCodec = currentLevel.audioCodec;
- var ua = navigator.userAgent.toLowerCase();
- if (this.audioCodecSwitch) {
- if (audioCodec) {
- if (audioCodec.indexOf('mp4a.40.5') !== -1) {
- audioCodec = 'mp4a.40.2';
- } else {
- audioCodec = 'mp4a.40.5';
- }
- }
- // In the case that AAC and HE-AAC audio codecs are signalled in manifest,
- // force HE-AAC, as it seems that most browsers prefers it.
- // don't force HE-AAC if mono stream, or in Firefox
- var audioMetadata = audio.metadata;
- if (audioMetadata && 'channelCount' in audioMetadata && (audioMetadata.channelCount || 1) !== 1 && ua.indexOf('firefox') === -1) {
- audioCodec = 'mp4a.40.5';
- }
- }
- // HE-AAC is broken on Android, always signal audio codec as AAC even if variant manifest states otherwise
- if (audioCodec && audioCodec.indexOf('mp4a.40.5') !== -1 && ua.indexOf('android') !== -1 && audio.container !== 'audio/mpeg') {
- // Exclude mpeg audio
- audioCodec = 'mp4a.40.2';
- this.log("Android: force audio codec to " + audioCodec);
- }
- if (currentLevel.audioCodec && currentLevel.audioCodec !== audioCodec) {
- this.log("Swapping manifest audio codec \"" + currentLevel.audioCodec + "\" for \"" + audioCodec + "\"");
- }
- audio.levelCodec = audioCodec;
- audio.id = 'main';
- this.log("Init audio buffer, container:" + audio.container + ", codecs[selected/level/parsed]=[" + (audioCodec || '') + "/" + (currentLevel.audioCodec || '') + "/" + audio.codec + "]");
- }
- if (video) {
- video.levelCodec = currentLevel.videoCodec;
- video.id = 'main';
- this.log("Init video buffer, container:" + video.container + ", codecs[level/parsed]=[" + (currentLevel.videoCodec || '') + "/" + video.codec + "]");
- }
- if (audiovideo) {
- this.log("Init audiovideo buffer, container:" + audiovideo.container + ", codecs[level/parsed]=[" + currentLevel.codecs + "/" + audiovideo.codec + "]");
- }
- this.hls.trigger(Events.BUFFER_CODECS, tracks);
- // loop through tracks that are going to be provided to bufferController
- Object.keys(tracks).forEach(function (trackName) {
- var track = tracks[trackName];
- var initSegment = track.initSegment;
- if (initSegment != null && initSegment.byteLength) {
- _this3.hls.trigger(Events.BUFFER_APPENDING, {
- type: trackName,
- data: initSegment,
- frag: frag,
- part: null,
- chunkMeta: chunkMeta,
- parent: frag.type
- });
- }
- });
- // trigger handler right now
- this.tickImmediate();
- };
- _proto.getMainFwdBufferInfo = function getMainFwdBufferInfo() {
- return this.getFwdBufferInfo(this.mediaBuffer ? this.mediaBuffer : this.media, PlaylistLevelType.MAIN);
- };
- _proto.backtrack = function backtrack(frag) {
- this.couldBacktrack = true;
- // Causes findFragments to backtrack through fragments to find the keyframe
- this.backtrackFragment = frag;
- this.resetTransmuxer();
- this.flushBufferGap(frag);
- this.fragmentTracker.removeFragment(frag);
- this.fragPrevious = null;
- this.nextLoadPosition = frag.start;
- this.state = State.IDLE;
- };
- _proto.checkFragmentChanged = function checkFragmentChanged() {
- var video = this.media;
- var fragPlayingCurrent = null;
- if (video && video.readyState > 1 && video.seeking === false) {
- var currentTime = video.currentTime;
- /* if video element is in seeked state, currentTime can only increase.
- (assuming that playback rate is positive ...)
- As sometimes currentTime jumps back to zero after a
- media decode error, check this, to avoid seeking back to
- wrong position after a media decode error
- */
-
- if (BufferHelper.isBuffered(video, currentTime)) {
- fragPlayingCurrent = this.getAppendedFrag(currentTime);
- } else if (BufferHelper.isBuffered(video, currentTime + 0.1)) {
- /* ensure that FRAG_CHANGED event is triggered at startup,
- when first video frame is displayed and playback is paused.
- add a tolerance of 100ms, in case current position is not buffered,
- check if current pos+100ms is buffered and use that buffer range
- for FRAG_CHANGED event reporting */
- fragPlayingCurrent = this.getAppendedFrag(currentTime + 0.1);
- }
- if (fragPlayingCurrent) {
- this.backtrackFragment = null;
- var fragPlaying = this.fragPlaying;
- var fragCurrentLevel = fragPlayingCurrent.level;
- if (!fragPlaying || fragPlayingCurrent.sn !== fragPlaying.sn || fragPlaying.level !== fragCurrentLevel) {
- this.fragPlaying = fragPlayingCurrent;
- this.hls.trigger(Events.FRAG_CHANGED, {
- frag: fragPlayingCurrent
- });
- if (!fragPlaying || fragPlaying.level !== fragCurrentLevel) {
- this.hls.trigger(Events.LEVEL_SWITCHED, {
- level: fragCurrentLevel
- });
- }
- }
- }
- }
- };
- _createClass(StreamController, [{
- key: "nextLevel",
- get: function get() {
- var frag = this.nextBufferedFrag;
- if (frag) {
- return frag.level;
- }
- return -1;
- }
- }, {
- key: "currentFrag",
- get: function get() {
- var media = this.media;
- if (media) {
- return this.fragPlaying || this.getAppendedFrag(media.currentTime);
- }
- return null;
- }
- }, {
- key: "currentProgramDateTime",
- get: function get() {
- var media = this.media;
- if (media) {
- var currentTime = media.currentTime;
- var frag = this.currentFrag;
- if (frag && isFiniteNumber(currentTime) && isFiniteNumber(frag.programDateTime)) {
- var epocMs = frag.programDateTime + (currentTime - frag.start) * 1000;
- return new Date(epocMs);
- }
- }
- return null;
- }
- }, {
- key: "currentLevel",
- get: function get() {
- var frag = this.currentFrag;
- if (frag) {
- return frag.level;
- }
- return -1;
- }
- }, {
- key: "nextBufferedFrag",
- get: function get() {
- var frag = this.currentFrag;
- if (frag) {
- return this.followingBufferedFrag(frag);
- }
- return null;
- }
- }, {
- key: "forceStartLoad",
- get: function get() {
- return this._forceStartLoad;
- }
- }]);
- return StreamController;
- }(BaseStreamController);
-
- /**
- * The `Hls` class is the core of the HLS.js library used to instantiate player instances.
- * @public
- */
- var Hls = /*#__PURE__*/function () {
- /**
- * Check if the required MediaSource Extensions are available.
- */
- Hls.isMSESupported = function isMSESupported$1() {
- return isMSESupported();
- }
-
- /**
- * Check if MediaSource Extensions are available and isTypeSupported checks pass for any baseline codecs.
- */;
- Hls.isSupported = function isSupported$1() {
- return isSupported();
- }
-
- /**
- * Get the MediaSource global used for MSE playback (ManagedMediaSource, MediaSource, or WebKitMediaSource).
- */;
- Hls.getMediaSource = function getMediaSource$1() {
- return getMediaSource();
- };
- /**
- * Creates an instance of an HLS client that can attach to exactly one `HTMLMediaElement`.
- * @param userConfig - Configuration options applied over `Hls.DefaultConfig`
- */
- function Hls(userConfig) {
- if (userConfig === void 0) {
- userConfig = {};
- }
- /**
- * The runtime configuration used by the player. At instantiation this is combination of `hls.userConfig` merged over `Hls.DefaultConfig`.
- */
- this.config = void 0;
- /**
- * The configuration object provided on player instantiation.
- */
- this.userConfig = void 0;
- this.coreComponents = void 0;
- this.networkControllers = void 0;
- this.started = false;
- this._emitter = new EventEmitter();
- this._autoLevelCapping = -1;
- this._maxHdcpLevel = null;
- this.abrController = void 0;
- this.bufferController = void 0;
- this.capLevelController = void 0;
- this.latencyController = void 0;
- this.levelController = void 0;
- this.streamController = void 0;
- this.audioTrackController = void 0;
- this.subtitleTrackController = void 0;
- this.emeController = void 0;
- this.cmcdController = void 0;
- this._media = null;
- this.url = null;
- this.triggeringException = void 0;
- enableLogs(userConfig.debug || false, 'Hls instance');
- var config = this.config = mergeConfig(Hls.DefaultConfig, userConfig);
- this.userConfig = userConfig;
- if (config.progressive) {
- enableStreamingMode(config);
- }
-
- // core controllers and network loaders
- var ConfigAbrController = config.abrController,
- ConfigBufferController = config.bufferController,
- ConfigCapLevelController = config.capLevelController,
- ConfigErrorController = config.errorController,
- ConfigFpsController = config.fpsController;
- var errorController = new ConfigErrorController(this);
- var abrController = this.abrController = new ConfigAbrController(this);
- var bufferController = this.bufferController = new ConfigBufferController(this);
- var capLevelController = this.capLevelController = new ConfigCapLevelController(this);
- var fpsController = new ConfigFpsController(this);
- var playListLoader = new PlaylistLoader(this);
- var id3TrackController = new ID3TrackController(this);
- var ConfigContentSteeringController = config.contentSteeringController;
- // ConentSteeringController is defined before LevelController to receive Multivariant Playlist events first
- var contentSteering = ConfigContentSteeringController ? new ConfigContentSteeringController(this) : null;
- var levelController = this.levelController = new LevelController(this, contentSteering);
- // FragmentTracker must be defined before StreamController because the order of event handling is important
- var fragmentTracker = new FragmentTracker(this);
- var keyLoader = new KeyLoader(this.config);
- var streamController = this.streamController = new StreamController(this, fragmentTracker, keyLoader);
-
- // Cap level controller uses streamController to flush the buffer
- capLevelController.setStreamController(streamController);
- // fpsController uses streamController to switch when frames are being dropped
- fpsController.setStreamController(streamController);
- var networkControllers = [playListLoader, levelController, streamController];
- if (contentSteering) {
- networkControllers.splice(1, 0, contentSteering);
- }
- this.networkControllers = networkControllers;
- var coreComponents = [abrController, bufferController, capLevelController, fpsController, id3TrackController, fragmentTracker];
- this.audioTrackController = this.createController(config.audioTrackController, networkControllers);
- var AudioStreamControllerClass = config.audioStreamController;
- if (AudioStreamControllerClass) {
- networkControllers.push(new AudioStreamControllerClass(this, fragmentTracker, keyLoader));
- }
- // subtitleTrackController must be defined before subtitleStreamController because the order of event handling is important
- this.subtitleTrackController = this.createController(config.subtitleTrackController, networkControllers);
- var SubtitleStreamControllerClass = config.subtitleStreamController;
- if (SubtitleStreamControllerClass) {
- networkControllers.push(new SubtitleStreamControllerClass(this, fragmentTracker, keyLoader));
- }
- this.createController(config.timelineController, coreComponents);
- keyLoader.emeController = this.emeController = this.createController(config.emeController, coreComponents);
- this.cmcdController = this.createController(config.cmcdController, coreComponents);
- this.latencyController = this.createController(LatencyController, coreComponents);
- this.coreComponents = coreComponents;
-
- // Error controller handles errors before and after all other controllers
- // This listener will be invoked after all other controllers error listeners
- networkControllers.push(errorController);
- var onErrorOut = errorController.onErrorOut;
- if (typeof onErrorOut === 'function') {
- this.on(Events.ERROR, onErrorOut, errorController);
- }
- }
- var _proto = Hls.prototype;
- _proto.createController = function createController(ControllerClass, components) {
- if (ControllerClass) {
- var controllerInstance = new ControllerClass(this);
- if (components) {
- components.push(controllerInstance);
- }
- return controllerInstance;
- }
- return null;
- }
-
- // Delegate the EventEmitter through the public API of Hls.js
- ;
- _proto.on = function on(event, listener, context) {
- if (context === void 0) {
- context = this;
- }
- this._emitter.on(event, listener, context);
- };
- _proto.once = function once(event, listener, context) {
- if (context === void 0) {
- context = this;
- }
- this._emitter.once(event, listener, context);
- };
- _proto.removeAllListeners = function removeAllListeners(event) {
- this._emitter.removeAllListeners(event);
- };
- _proto.off = function off(event, listener, context, once) {
- if (context === void 0) {
- context = this;
- }
- this._emitter.off(event, listener, context, once);
- };
- _proto.listeners = function listeners(event) {
- return this._emitter.listeners(event);
- };
- _proto.emit = function emit(event, name, eventObject) {
- return this._emitter.emit(event, name, eventObject);
- };
- _proto.trigger = function trigger(event, eventObject) {
- if (this.config.debug) {
- return this.emit(event, event, eventObject);
- } else {
- try {
- return this.emit(event, event, eventObject);
- } catch (error) {
- logger.error('An internal error happened while handling event ' + event + '. Error message: "' + error.message + '". Here is a stacktrace:', error);
- // Prevent recursion in error event handlers that throw #5497
- if (!this.triggeringException) {
- this.triggeringException = true;
- var fatal = event === Events.ERROR;
- this.trigger(Events.ERROR, {
- type: ErrorTypes.OTHER_ERROR,
- details: ErrorDetails.INTERNAL_EXCEPTION,
- fatal: fatal,
- event: event,
- error: error
- });
- this.triggeringException = false;
- }
- }
- }
- return false;
- };
- _proto.listenerCount = function listenerCount(event) {
- return this._emitter.listenerCount(event);
- }
-
- /**
- * Dispose of the instance
- */;
- _proto.destroy = function destroy() {
- logger.log('destroy');
- this.trigger(Events.DESTROYING, undefined);
- this.detachMedia();
- this.removeAllListeners();
- this._autoLevelCapping = -1;
- this.url = null;
- this.networkControllers.forEach(function (component) {
- return component.destroy();
- });
- this.networkControllers.length = 0;
- this.coreComponents.forEach(function (component) {
- return component.destroy();
- });
- this.coreComponents.length = 0;
- // Remove any references that could be held in config options or callbacks
- var config = this.config;
- config.xhrSetup = config.fetchSetup = undefined;
- // @ts-ignore
- this.userConfig = null;
- }
-
- /**
- * Attaches Hls.js to a media element
- */;
- _proto.attachMedia = function attachMedia(media) {
- logger.log('attachMedia');
- this._media = media;
- this.trigger(Events.MEDIA_ATTACHING, {
- media: media
- });
- }
-
- /**
- * Detach Hls.js from the media
- */;
- _proto.detachMedia = function detachMedia() {
- logger.log('detachMedia');
- this.trigger(Events.MEDIA_DETACHING, undefined);
- this._media = null;
- }
-
- /**
- * Set the source URL. Can be relative or absolute.
- */;
- _proto.loadSource = function loadSource(url) {
- this.stopLoad();
- var media = this.media;
- var loadedSource = this.url;
- var loadingSource = this.url = urlToolkitExports.buildAbsoluteURL(self.location.href, url, {
- alwaysNormalize: true
- });
- this._autoLevelCapping = -1;
- this._maxHdcpLevel = null;
- logger.log("loadSource:" + loadingSource);
- if (media && loadedSource && (loadedSource !== loadingSource || this.bufferController.hasSourceTypes())) {
- this.detachMedia();
- this.attachMedia(media);
- }
- // when attaching to a source URL, trigger a playlist load
- this.trigger(Events.MANIFEST_LOADING, {
- url: url
- });
- }
-
- /**
- * Start loading data from the stream source.
- * Depending on default config, client starts loading automatically when a source is set.
- *
- * @param startPosition - Set the start position to stream from.
- * Defaults to -1 (None: starts from earliest point)
- */;
- _proto.startLoad = function startLoad(startPosition) {
- if (startPosition === void 0) {
- startPosition = -1;
- }
- logger.log("startLoad(" + startPosition + ")");
- this.started = true;
- this.networkControllers.forEach(function (controller) {
- controller.startLoad(startPosition);
- });
- }
-
- /**
- * Stop loading of any stream data.
- */;
- _proto.stopLoad = function stopLoad() {
- logger.log('stopLoad');
- this.started = false;
- this.networkControllers.forEach(function (controller) {
- controller.stopLoad();
- });
- }
-
- /**
- * Resumes stream controller segment loading if previously started.
- */;
- _proto.resumeBuffering = function resumeBuffering() {
- if (this.started) {
- this.networkControllers.forEach(function (controller) {
- if ('fragmentLoader' in controller) {
- controller.startLoad(-1);
- }
- });
- }
- }
-
- /**
- * Stops stream controller segment loading without changing 'started' state like stopLoad().
- * This allows for media buffering to be paused without interupting playlist loading.
- */;
- _proto.pauseBuffering = function pauseBuffering() {
- this.networkControllers.forEach(function (controller) {
- if ('fragmentLoader' in controller) {
- controller.stopLoad();
- }
- });
- }
-
- /**
- * Swap through possible audio codecs in the stream (for example to switch from stereo to 5.1)
- */;
- _proto.swapAudioCodec = function swapAudioCodec() {
- logger.log('swapAudioCodec');
- this.streamController.swapAudioCodec();
- }
-
- /**
- * When the media-element fails, this allows to detach and then re-attach it
- * as one call (convenience method).
- *
- * Automatic recovery of media-errors by this process is configurable.
- */;
- _proto.recoverMediaError = function recoverMediaError() {
- logger.log('recoverMediaError');
- var media = this._media;
- this.detachMedia();
- if (media) {
- this.attachMedia(media);
- }
- };
- _proto.removeLevel = function removeLevel(levelIndex) {
- this.levelController.removeLevel(levelIndex);
- }
-
- /**
- * @returns an array of levels (variants) sorted by HDCP-LEVEL, RESOLUTION (height), FRAME-RATE, CODECS, VIDEO-RANGE, and BANDWIDTH
- */;
- /**
- * Find and select the best matching audio track, making a level switch when a Group change is necessary.
- * Updates `hls.config.audioPreference`. Returns the selected track, or null when no matching track is found.
- */
- _proto.setAudioOption = function setAudioOption(audioOption) {
- var _this$audioTrackContr;
- return (_this$audioTrackContr = this.audioTrackController) == null ? void 0 : _this$audioTrackContr.setAudioOption(audioOption);
- }
- /**
- * Find and select the best matching subtitle track, making a level switch when a Group change is necessary.
- * Updates `hls.config.subtitlePreference`. Returns the selected track, or null when no matching track is found.
- */;
- _proto.setSubtitleOption = function setSubtitleOption(subtitleOption) {
- var _this$subtitleTrackCo;
- (_this$subtitleTrackCo = this.subtitleTrackController) == null ? void 0 : _this$subtitleTrackCo.setSubtitleOption(subtitleOption);
- return null;
- }
-
- /**
- * Get the complete list of audio tracks across all media groups
- */;
- _createClass(Hls, [{
- key: "levels",
- get: function get() {
- var levels = this.levelController.levels;
- return levels ? levels : [];
- }
-
- /**
- * Index of quality level (variant) currently played
- */
- }, {
- key: "currentLevel",
- get: function get() {
- return this.streamController.currentLevel;
- }
-
- /**
- * Set quality level index immediately. This will flush the current buffer to replace the quality asap. That means playback will interrupt at least shortly to re-buffer and re-sync eventually. Set to -1 for automatic level selection.
- */,
- set: function set(newLevel) {
- logger.log("set currentLevel:" + newLevel);
- this.levelController.manualLevel = newLevel;
- this.streamController.immediateLevelSwitch();
- }
-
- /**
- * Index of next quality level loaded as scheduled by stream controller.
- */
- }, {
- key: "nextLevel",
- get: function get() {
- return this.streamController.nextLevel;
- }
-
- /**
- * Set quality level index for next loaded data.
- * This will switch the video quality asap, without interrupting playback.
- * May abort current loading of data, and flush parts of buffer (outside currently played fragment region).
- * @param newLevel - Pass -1 for automatic level selection
- */,
- set: function set(newLevel) {
- logger.log("set nextLevel:" + newLevel);
- this.levelController.manualLevel = newLevel;
- this.streamController.nextLevelSwitch();
- }
-
- /**
- * Return the quality level of the currently or last (of none is loaded currently) segment
- */
- }, {
- key: "loadLevel",
- get: function get() {
- return this.levelController.level;
- }
-
- /**
- * Set quality level index for next loaded data in a conservative way.
- * This will switch the quality without flushing, but interrupt current loading.
- * Thus the moment when the quality switch will appear in effect will only be after the already existing buffer.
- * @param newLevel - Pass -1 for automatic level selection
- */,
- set: function set(newLevel) {
- logger.log("set loadLevel:" + newLevel);
- this.levelController.manualLevel = newLevel;
- }
-
- /**
- * get next quality level loaded
- */
- }, {
- key: "nextLoadLevel",
- get: function get() {
- return this.levelController.nextLoadLevel;
- }
-
- /**
- * Set quality level of next loaded segment in a fully "non-destructive" way.
- * Same as `loadLevel` but will wait for next switch (until current loading is done).
- */,
- set: function set(level) {
- this.levelController.nextLoadLevel = level;
- }
-
- /**
- * Return "first level": like a default level, if not set,
- * falls back to index of first level referenced in manifest
- */
- }, {
- key: "firstLevel",
- get: function get() {
- return Math.max(this.levelController.firstLevel, this.minAutoLevel);
- }
-
- /**
- * Sets "first-level", see getter.
- */,
- set: function set(newLevel) {
- logger.log("set firstLevel:" + newLevel);
- this.levelController.firstLevel = newLevel;
- }
-
- /**
- * Return the desired start level for the first fragment that will be loaded.
- * The default value of -1 indicates automatic start level selection.
- * Setting hls.nextAutoLevel without setting a startLevel will result in
- * the nextAutoLevel value being used for one fragment load.
- */
- }, {
- key: "startLevel",
- get: function get() {
- var startLevel = this.levelController.startLevel;
- if (startLevel === -1 && this.abrController.forcedAutoLevel > -1) {
- return this.abrController.forcedAutoLevel;
- }
- return startLevel;
- }
-
- /**
- * set start level (level of first fragment that will be played back)
- * if not overrided by user, first level appearing in manifest will be used as start level
- * if -1 : automatic start level selection, playback will start from level matching download bandwidth
- * (determined from download of first segment)
- */,
- set: function set(newLevel) {
- logger.log("set startLevel:" + newLevel);
- // if not in automatic start level detection, ensure startLevel is greater than minAutoLevel
- if (newLevel !== -1) {
- newLevel = Math.max(newLevel, this.minAutoLevel);
- }
- this.levelController.startLevel = newLevel;
- }
-
- /**
- * Whether level capping is enabled.
- * Default value is set via `config.capLevelToPlayerSize`.
- */
- }, {
- key: "capLevelToPlayerSize",
- get: function get() {
- return this.config.capLevelToPlayerSize;
- }
-
- /**
- * Enables or disables level capping. If disabled after previously enabled, `nextLevelSwitch` will be immediately called.
- */,
- set: function set(shouldStartCapping) {
- var newCapLevelToPlayerSize = !!shouldStartCapping;
- if (newCapLevelToPlayerSize !== this.config.capLevelToPlayerSize) {
- if (newCapLevelToPlayerSize) {
- this.capLevelController.startCapping(); // If capping occurs, nextLevelSwitch will happen based on size.
- } else {
- this.capLevelController.stopCapping();
- this.autoLevelCapping = -1;
- this.streamController.nextLevelSwitch(); // Now we're uncapped, get the next level asap.
- }
- this.config.capLevelToPlayerSize = newCapLevelToPlayerSize;
- }
- }
-
- /**
- * Capping/max level value that should be used by automatic level selection algorithm (`ABRController`)
- */
- }, {
- key: "autoLevelCapping",
- get: function get() {
- return this._autoLevelCapping;
- }
-
- /**
- * Returns the current bandwidth estimate in bits per second, when available. Otherwise, `NaN` is returned.
- */,
- set:
- /**
- * Capping/max level value that should be used by automatic level selection algorithm (`ABRController`)
- */
- function set(newLevel) {
- if (this._autoLevelCapping !== newLevel) {
- logger.log("set autoLevelCapping:" + newLevel);
- this._autoLevelCapping = newLevel;
- this.levelController.checkMaxAutoUpdated();
- }
- }
- }, {
- key: "bandwidthEstimate",
- get: function get() {
- var bwEstimator = this.abrController.bwEstimator;
- if (!bwEstimator) {
- return NaN;
- }
- return bwEstimator.getEstimate();
- },
- set: function set(abrEwmaDefaultEstimate) {
- this.abrController.resetEstimator(abrEwmaDefaultEstimate);
- }
-
- /**
- * get time to first byte estimate
- * @type {number}
- */
- }, {
- key: "ttfbEstimate",
- get: function get() {
- var bwEstimator = this.abrController.bwEstimator;
- if (!bwEstimator) {
- return NaN;
- }
- return bwEstimator.getEstimateTTFB();
- }
- }, {
- key: "maxHdcpLevel",
- get: function get() {
- return this._maxHdcpLevel;
- },
- set: function set(value) {
- if (isHdcpLevel(value) && this._maxHdcpLevel !== value) {
- this._maxHdcpLevel = value;
- this.levelController.checkMaxAutoUpdated();
- }
- }
-
- /**
- * True when automatic level selection enabled
- */
- }, {
- key: "autoLevelEnabled",
- get: function get() {
- return this.levelController.manualLevel === -1;
- }
-
- /**
- * Level set manually (if any)
- */
- }, {
- key: "manualLevel",
- get: function get() {
- return this.levelController.manualLevel;
- }
-
- /**
- * min level selectable in auto mode according to config.minAutoBitrate
- */
- }, {
- key: "minAutoLevel",
- get: function get() {
- var levels = this.levels,
- minAutoBitrate = this.config.minAutoBitrate;
- if (!levels) return 0;
- var len = levels.length;
- for (var i = 0; i < len; i++) {
- if (levels[i].maxBitrate >= minAutoBitrate) {
- return i;
- }
- }
- return 0;
- }
-
- /**
- * max level selectable in auto mode according to autoLevelCapping
- */
- }, {
- key: "maxAutoLevel",
- get: function get() {
- var levels = this.levels,
- autoLevelCapping = this.autoLevelCapping,
- maxHdcpLevel = this.maxHdcpLevel;
- var maxAutoLevel;
- if (autoLevelCapping === -1 && levels != null && levels.length) {
- maxAutoLevel = levels.length - 1;
- } else {
- maxAutoLevel = autoLevelCapping;
- }
- if (maxHdcpLevel) {
- for (var i = maxAutoLevel; i--;) {
- var hdcpLevel = levels[i].attrs['HDCP-LEVEL'];
- if (hdcpLevel && hdcpLevel <= maxHdcpLevel) {
- return i;
- }
- }
- }
- return maxAutoLevel;
- }
- }, {
- key: "firstAutoLevel",
- get: function get() {
- return this.abrController.firstAutoLevel;
- }
-
- /**
- * next automatically selected quality level
- */
- }, {
- key: "nextAutoLevel",
- get: function get() {
- return this.abrController.nextAutoLevel;
- }
-
- /**
- * this setter is used to force next auto level.
- * this is useful to force a switch down in auto mode:
- * in case of load error on level N, hls.js can set nextAutoLevel to N-1 for example)
- * forced value is valid for one fragment. upon successful frag loading at forced level,
- * this value will be resetted to -1 by ABR controller.
- */,
- set: function set(nextLevel) {
- this.abrController.nextAutoLevel = nextLevel;
- }
-
- /**
- * get the datetime value relative to media.currentTime for the active level Program Date Time if present
- */
- }, {
- key: "playingDate",
- get: function get() {
- return this.streamController.currentProgramDateTime;
- }
- }, {
- key: "mainForwardBufferInfo",
- get: function get() {
- return this.streamController.getMainFwdBufferInfo();
- }
- }, {
- key: "allAudioTracks",
- get: function get() {
- var audioTrackController = this.audioTrackController;
- return audioTrackController ? audioTrackController.allAudioTracks : [];
- }
-
- /**
- * Get the list of selectable audio tracks
- */
- }, {
- key: "audioTracks",
- get: function get() {
- var audioTrackController = this.audioTrackController;
- return audioTrackController ? audioTrackController.audioTracks : [];
- }
-
- /**
- * index of the selected audio track (index in audio track lists)
- */
- }, {
- key: "audioTrack",
- get: function get() {
- var audioTrackController = this.audioTrackController;
- return audioTrackController ? audioTrackController.audioTrack : -1;
- }
-
- /**
- * selects an audio track, based on its index in audio track lists
- */,
- set: function set(audioTrackId) {
- var audioTrackController = this.audioTrackController;
- if (audioTrackController) {
- audioTrackController.audioTrack = audioTrackId;
- }
- }
-
- /**
- * get the complete list of subtitle tracks across all media groups
- */
- }, {
- key: "allSubtitleTracks",
- get: function get() {
- var subtitleTrackController = this.subtitleTrackController;
- return subtitleTrackController ? subtitleTrackController.allSubtitleTracks : [];
- }
-
- /**
- * get alternate subtitle tracks list from playlist
- */
- }, {
- key: "subtitleTracks",
- get: function get() {
- var subtitleTrackController = this.subtitleTrackController;
- return subtitleTrackController ? subtitleTrackController.subtitleTracks : [];
- }
-
- /**
- * index of the selected subtitle track (index in subtitle track lists)
- */
- }, {
- key: "subtitleTrack",
- get: function get() {
- var subtitleTrackController = this.subtitleTrackController;
- return subtitleTrackController ? subtitleTrackController.subtitleTrack : -1;
- },
- set:
- /**
- * select an subtitle track, based on its index in subtitle track lists
- */
- function set(subtitleTrackId) {
- var subtitleTrackController = this.subtitleTrackController;
- if (subtitleTrackController) {
- subtitleTrackController.subtitleTrack = subtitleTrackId;
- }
- }
-
- /**
- * Whether subtitle display is enabled or not
- */
- }, {
- key: "media",
- get: function get() {
- return this._media;
- }
- }, {
- key: "subtitleDisplay",
- get: function get() {
- var subtitleTrackController = this.subtitleTrackController;
- return subtitleTrackController ? subtitleTrackController.subtitleDisplay : false;
- }
-
- /**
- * Enable/disable subtitle display rendering
- */,
- set: function set(value) {
- var subtitleTrackController = this.subtitleTrackController;
- if (subtitleTrackController) {
- subtitleTrackController.subtitleDisplay = value;
- }
- }
-
- /**
- * get mode for Low-Latency HLS loading
- */
- }, {
- key: "lowLatencyMode",
- get: function get() {
- return this.config.lowLatencyMode;
- }
-
- /**
- * Enable/disable Low-Latency HLS part playlist and segment loading, and start live streams at playlist PART-HOLD-BACK rather than HOLD-BACK.
- */,
- set: function set(mode) {
- this.config.lowLatencyMode = mode;
- }
-
- /**
- * Position (in seconds) of live sync point (ie edge of live position minus safety delay defined by ```hls.config.liveSyncDuration```)
- * @returns null prior to loading live Playlist
- */
- }, {
- key: "liveSyncPosition",
- get: function get() {
- return this.latencyController.liveSyncPosition;
- }
-
- /**
- * Estimated position (in seconds) of live edge (ie edge of live playlist plus time sync playlist advanced)
- * @returns 0 before first playlist is loaded
- */
- }, {
- key: "latency",
- get: function get() {
- return this.latencyController.latency;
- }
-
- /**
- * maximum distance from the edge before the player seeks forward to ```hls.liveSyncPosition```
- * configured using ```liveMaxLatencyDurationCount``` (multiple of target duration) or ```liveMaxLatencyDuration```
- * @returns 0 before first playlist is loaded
- */
- }, {
- key: "maxLatency",
- get: function get() {
- return this.latencyController.maxLatency;
- }
-
- /**
- * target distance from the edge as calculated by the latency controller
- */
- }, {
- key: "targetLatency",
- get: function get() {
- return this.latencyController.targetLatency;
- }
-
- /**
- * the rate at which the edge of the current live playlist is advancing or 1 if there is none
- */
- }, {
- key: "drift",
- get: function get() {
- return this.latencyController.drift;
- }
-
- /**
- * set to true when startLoad is called before MANIFEST_PARSED event
- */
- }, {
- key: "forceStartLoad",
- get: function get() {
- return this.streamController.forceStartLoad;
- }
- }], [{
- key: "version",
- get:
- /**
- * Get the video-dev/hls.js package version.
- */
- function get() {
- return "1.5.15";
- }
- }, {
- key: "Events",
- get: function get() {
- return Events;
- }
- }, {
- key: "ErrorTypes",
- get: function get() {
- return ErrorTypes;
- }
- }, {
- key: "ErrorDetails",
- get: function get() {
- return ErrorDetails;
- }
-
- /**
- * Get the default configuration applied to new instances.
- */
- }, {
- key: "DefaultConfig",
- get: function get() {
- if (!Hls.defaultConfig) {
- return hlsDefaultConfig;
- }
- return Hls.defaultConfig;
- }
-
- /**
- * Replace the default configuration applied to new instances.
- */,
- set: function set(defaultConfig) {
- Hls.defaultConfig = defaultConfig;
- }
- }]);
- return Hls;
- }();
- Hls.defaultConfig = void 0;
-
- return Hls;
-
-}));
-})(false);
-//# sourceMappingURL=hls.js.map
-
-
-/***/ }),
-
-/***/ "./node_modules/jquery/dist/jquery.js":
-/*!********************************************!*\
- !*** ./node_modules/jquery/dist/jquery.js ***!
- \********************************************/
-/***/ (function(module, exports) {
-
-var __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;/*!
- * jQuery JavaScript Library v3.7.1
- * https://jquery.com/
- *
- * Copyright OpenJS Foundation and other contributors
- * Released under the MIT license
- * https://jquery.org/license
- *
- * Date: 2023-08-28T13:37Z
- */
-( function( global, factory ) {
-
- "use strict";
-
- if ( true && typeof module.exports === "object" ) {
-
- // For CommonJS and CommonJS-like environments where a proper `window`
- // is present, execute the factory and get jQuery.
- // For environments that do not have a `window` with a `document`
- // (such as Node.js), expose a factory as module.exports.
- // This accentuates the need for the creation of a real `window`.
- // e.g. var jQuery = require("jquery")(window);
- // See ticket trac-14549 for more info.
- module.exports = global.document ?
- factory( global, true ) :
- function( w ) {
- if ( !w.document ) {
- throw new Error( "jQuery requires a window with a document" );
- }
- return factory( w );
- };
- } else {
- factory( global );
- }
-
-// Pass this if window is not defined yet
-} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) {
-
-// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1
-// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode
-// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common
-// enough that all such attempts are guarded in a try block.
-"use strict";
-
-var arr = [];
-
-var getProto = Object.getPrototypeOf;
-
-var slice = arr.slice;
-
-var flat = arr.flat ? function( array ) {
- return arr.flat.call( array );
-} : function( array ) {
- return arr.concat.apply( [], array );
-};
-
-
-var push = arr.push;
-
-var indexOf = arr.indexOf;
-
-var class2type = {};
-
-var toString = class2type.toString;
-
-var hasOwn = class2type.hasOwnProperty;
-
-var fnToString = hasOwn.toString;
-
-var ObjectFunctionString = fnToString.call( Object );
-
-var support = {};
-
-var isFunction = function isFunction( obj ) {
-
- // Support: Chrome <=57, Firefox <=52
- // In some browsers, typeof returns "function" for HTML elements
- // (i.e., `typeof document.createElement( "object" ) === "function"`).
- // We don't want to classify *any* DOM node as a function.
- // Support: QtWeb <=3.8.5, WebKit <=534.34, wkhtmltopdf tool <=0.12.5
- // Plus for old WebKit, typeof returns "function" for HTML collections
- // (e.g., `typeof document.getElementsByTagName("div") === "function"`). (gh-4756)
- return typeof obj === "function" && typeof obj.nodeType !== "number" &&
- typeof obj.item !== "function";
- };
-
-
-var isWindow = function isWindow( obj ) {
- return obj != null && obj === obj.window;
- };
-
-
-var document = window.document;
-
-
-
- var preservedScriptAttributes = {
- type: true,
- src: true,
- nonce: true,
- noModule: true
- };
-
- function DOMEval( code, node, doc ) {
- doc = doc || document;
-
- var i, val,
- script = doc.createElement( "script" );
-
- script.text = code;
- if ( node ) {
- for ( i in preservedScriptAttributes ) {
-
- // Support: Firefox 64+, Edge 18+
- // Some browsers don't support the "nonce" property on scripts.
- // On the other hand, just using `getAttribute` is not enough as
- // the `nonce` attribute is reset to an empty string whenever it
- // becomes browsing-context connected.
- // See https://github.com/whatwg/html/issues/2369
- // See https://html.spec.whatwg.org/#nonce-attributes
- // The `node.getAttribute` check was added for the sake of
- // `jQuery.globalEval` so that it can fake a nonce-containing node
- // via an object.
- val = node[ i ] || node.getAttribute && node.getAttribute( i );
- if ( val ) {
- script.setAttribute( i, val );
- }
- }
- }
- doc.head.appendChild( script ).parentNode.removeChild( script );
- }
-
-
-function toType( obj ) {
- if ( obj == null ) {
- return obj + "";
- }
-
- // Support: Android <=2.3 only (functionish RegExp)
- return typeof obj === "object" || typeof obj === "function" ?
- class2type[ toString.call( obj ) ] || "object" :
- typeof obj;
-}
-/* global Symbol */
-// Defining this global in .eslintrc.json would create a danger of using the global
-// unguarded in another place, it seems safer to define global only for this module
-
-
-
-var version = "3.7.1",
-
- rhtmlSuffix = /HTML$/i,
-
- // Define a local copy of jQuery
- jQuery = function( selector, context ) {
-
- // The jQuery object is actually just the init constructor 'enhanced'
- // Need init if jQuery is called (just allow error to be thrown if not included)
- return new jQuery.fn.init( selector, context );
- };
-
-jQuery.fn = jQuery.prototype = {
-
- // The current version of jQuery being used
- jquery: version,
-
- constructor: jQuery,
-
- // The default length of a jQuery object is 0
- length: 0,
-
- toArray: function() {
- return slice.call( this );
- },
-
- // Get the Nth element in the matched element set OR
- // Get the whole matched element set as a clean array
- get: function( num ) {
-
- // Return all the elements in a clean array
- if ( num == null ) {
- return slice.call( this );
- }
-
- // Return just the one element from the set
- return num < 0 ? this[ num + this.length ] : this[ num ];
- },
-
- // Take an array of elements and push it onto the stack
- // (returning the new matched element set)
- pushStack: function( elems ) {
-
- // Build a new jQuery matched element set
- var ret = jQuery.merge( this.constructor(), elems );
-
- // Add the old object onto the stack (as a reference)
- ret.prevObject = this;
-
- // Return the newly-formed element set
- return ret;
- },
-
- // Execute a callback for every element in the matched set.
- each: function( callback ) {
- return jQuery.each( this, callback );
- },
-
- map: function( callback ) {
- return this.pushStack( jQuery.map( this, function( elem, i ) {
- return callback.call( elem, i, elem );
- } ) );
- },
-
- slice: function() {
- return this.pushStack( slice.apply( this, arguments ) );
- },
-
- first: function() {
- return this.eq( 0 );
- },
-
- last: function() {
- return this.eq( -1 );
- },
-
- even: function() {
- return this.pushStack( jQuery.grep( this, function( _elem, i ) {
- return ( i + 1 ) % 2;
- } ) );
- },
-
- odd: function() {
- return this.pushStack( jQuery.grep( this, function( _elem, i ) {
- return i % 2;
- } ) );
- },
-
- eq: function( i ) {
- var len = this.length,
- j = +i + ( i < 0 ? len : 0 );
- return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] );
- },
-
- end: function() {
- return this.prevObject || this.constructor();
- },
-
- // For internal use only.
- // Behaves like an Array's method, not like a jQuery method.
- push: push,
- sort: arr.sort,
- splice: arr.splice
-};
-
-jQuery.extend = jQuery.fn.extend = function() {
- var options, name, src, copy, copyIsArray, clone,
- target = arguments[ 0 ] || {},
- i = 1,
- length = arguments.length,
- deep = false;
-
- // Handle a deep copy situation
- if ( typeof target === "boolean" ) {
- deep = target;
-
- // Skip the boolean and the target
- target = arguments[ i ] || {};
- i++;
- }
-
- // Handle case when target is a string or something (possible in deep copy)
- if ( typeof target !== "object" && !isFunction( target ) ) {
- target = {};
- }
-
- // Extend jQuery itself if only one argument is passed
- if ( i === length ) {
- target = this;
- i--;
- }
-
- for ( ; i < length; i++ ) {
-
- // Only deal with non-null/undefined values
- if ( ( options = arguments[ i ] ) != null ) {
-
- // Extend the base object
- for ( name in options ) {
- copy = options[ name ];
-
- // Prevent Object.prototype pollution
- // Prevent never-ending loop
- if ( name === "__proto__" || target === copy ) {
- continue;
- }
-
- // Recurse if we're merging plain objects or arrays
- if ( deep && copy && ( jQuery.isPlainObject( copy ) ||
- ( copyIsArray = Array.isArray( copy ) ) ) ) {
- src = target[ name ];
-
- // Ensure proper type for the source value
- if ( copyIsArray && !Array.isArray( src ) ) {
- clone = [];
- } else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) {
- clone = {};
- } else {
- clone = src;
- }
- copyIsArray = false;
-
- // Never move original objects, clone them
- target[ name ] = jQuery.extend( deep, clone, copy );
-
- // Don't bring in undefined values
- } else if ( copy !== undefined ) {
- target[ name ] = copy;
- }
- }
- }
- }
-
- // Return the modified object
- return target;
-};
-
-jQuery.extend( {
-
- // Unique for each copy of jQuery on the page
- expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ),
-
- // Assume jQuery is ready without the ready module
- isReady: true,
-
- error: function( msg ) {
- throw new Error( msg );
- },
-
- noop: function() {},
-
- isPlainObject: function( obj ) {
- var proto, Ctor;
-
- // Detect obvious negatives
- // Use toString instead of jQuery.type to catch host objects
- if ( !obj || toString.call( obj ) !== "[object Object]" ) {
- return false;
- }
-
- proto = getProto( obj );
-
- // Objects with no prototype (e.g., `Object.create( null )`) are plain
- if ( !proto ) {
- return true;
- }
-
- // Objects with prototype are plain iff they were constructed by a global Object function
- Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor;
- return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString;
- },
-
- isEmptyObject: function( obj ) {
- var name;
-
- for ( name in obj ) {
- return false;
- }
- return true;
- },
-
- // Evaluates a script in a provided context; falls back to the global one
- // if not specified.
- globalEval: function( code, options, doc ) {
- DOMEval( code, { nonce: options && options.nonce }, doc );
- },
-
- each: function( obj, callback ) {
- var length, i = 0;
-
- if ( isArrayLike( obj ) ) {
- length = obj.length;
- for ( ; i < length; i++ ) {
- if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
- break;
- }
- }
- } else {
- for ( i in obj ) {
- if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
- break;
- }
- }
- }
-
- return obj;
- },
-
-
- // Retrieve the text value of an array of DOM nodes
- text: function( elem ) {
- var node,
- ret = "",
- i = 0,
- nodeType = elem.nodeType;
-
- if ( !nodeType ) {
-
- // If no nodeType, this is expected to be an array
- while ( ( node = elem[ i++ ] ) ) {
-
- // Do not traverse comment nodes
- ret += jQuery.text( node );
- }
- }
- if ( nodeType === 1 || nodeType === 11 ) {
- return elem.textContent;
- }
- if ( nodeType === 9 ) {
- return elem.documentElement.textContent;
- }
- if ( nodeType === 3 || nodeType === 4 ) {
- return elem.nodeValue;
- }
-
- // Do not include comment or processing instruction nodes
-
- return ret;
- },
-
- // results is for internal usage only
- makeArray: function( arr, results ) {
- var ret = results || [];
-
- if ( arr != null ) {
- if ( isArrayLike( Object( arr ) ) ) {
- jQuery.merge( ret,
- typeof arr === "string" ?
- [ arr ] : arr
- );
- } else {
- push.call( ret, arr );
- }
- }
-
- return ret;
- },
-
- inArray: function( elem, arr, i ) {
- return arr == null ? -1 : indexOf.call( arr, elem, i );
- },
-
- isXMLDoc: function( elem ) {
- var namespace = elem && elem.namespaceURI,
- docElem = elem && ( elem.ownerDocument || elem ).documentElement;
-
- // Assume HTML when documentElement doesn't yet exist, such as inside
- // document fragments.
- return !rhtmlSuffix.test( namespace || docElem && docElem.nodeName || "HTML" );
- },
-
- // Support: Android <=4.0 only, PhantomJS 1 only
- // push.apply(_, arraylike) throws on ancient WebKit
- merge: function( first, second ) {
- var len = +second.length,
- j = 0,
- i = first.length;
-
- for ( ; j < len; j++ ) {
- first[ i++ ] = second[ j ];
- }
-
- first.length = i;
-
- return first;
- },
-
- grep: function( elems, callback, invert ) {
- var callbackInverse,
- matches = [],
- i = 0,
- length = elems.length,
- callbackExpect = !invert;
-
- // Go through the array, only saving the items
- // that pass the validator function
- for ( ; i < length; i++ ) {
- callbackInverse = !callback( elems[ i ], i );
- if ( callbackInverse !== callbackExpect ) {
- matches.push( elems[ i ] );
- }
- }
-
- return matches;
- },
-
- // arg is for internal usage only
- map: function( elems, callback, arg ) {
- var length, value,
- i = 0,
- ret = [];
-
- // Go through the array, translating each of the items to their new values
- if ( isArrayLike( elems ) ) {
- length = elems.length;
- for ( ; i < length; i++ ) {
- value = callback( elems[ i ], i, arg );
-
- if ( value != null ) {
- ret.push( value );
- }
- }
-
- // Go through every key on the object,
- } else {
- for ( i in elems ) {
- value = callback( elems[ i ], i, arg );
-
- if ( value != null ) {
- ret.push( value );
- }
- }
- }
-
- // Flatten any nested arrays
- return flat( ret );
- },
-
- // A global GUID counter for objects
- guid: 1,
-
- // jQuery.support is not used in Core but other projects attach their
- // properties to it so it needs to exist.
- support: support
-} );
-
-if ( typeof Symbol === "function" ) {
- jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ];
-}
-
-// Populate the class2type map
-jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ),
- function( _i, name ) {
- class2type[ "[object " + name + "]" ] = name.toLowerCase();
- } );
-
-function isArrayLike( obj ) {
-
- // Support: real iOS 8.2 only (not reproducible in simulator)
- // `in` check used to prevent JIT error (gh-2145)
- // hasOwn isn't used here due to false negatives
- // regarding Nodelist length in IE
- var length = !!obj && "length" in obj && obj.length,
- type = toType( obj );
-
- if ( isFunction( obj ) || isWindow( obj ) ) {
- return false;
- }
-
- return type === "array" || length === 0 ||
- typeof length === "number" && length > 0 && ( length - 1 ) in obj;
-}
-
-
-function nodeName( elem, name ) {
-
- return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
-
-}
-var pop = arr.pop;
-
-
-var sort = arr.sort;
-
-
-var splice = arr.splice;
-
-
-var whitespace = "[\\x20\\t\\r\\n\\f]";
-
-
-var rtrimCSS = new RegExp(
- "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$",
- "g"
-);
-
-
-
-
-// Note: an element does not contain itself
-jQuery.contains = function( a, b ) {
- var bup = b && b.parentNode;
-
- return a === bup || !!( bup && bup.nodeType === 1 && (
-
- // Support: IE 9 - 11+
- // IE doesn't have `contains` on SVG.
- a.contains ?
- a.contains( bup ) :
- a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16
- ) );
-};
-
-
-
-
-// CSS string/identifier serialization
-// https://drafts.csswg.org/cssom/#common-serializing-idioms
-var rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\x80-\uFFFF\w-]/g;
-
-function fcssescape( ch, asCodePoint ) {
- if ( asCodePoint ) {
-
- // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
- if ( ch === "\0" ) {
- return "\uFFFD";
- }
-
- // Control characters and (dependent upon position) numbers get escaped as code points
- return ch.slice( 0, -1 ) + "\\" + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " ";
- }
-
- // Other potentially-special ASCII characters get backslash-escaped
- return "\\" + ch;
-}
-
-jQuery.escapeSelector = function( sel ) {
- return ( sel + "" ).replace( rcssescape, fcssescape );
-};
-
-
-
-
-var preferredDoc = document,
- pushNative = push;
-
-( function() {
-
-var i,
- Expr,
- outermostContext,
- sortInput,
- hasDuplicate,
- push = pushNative,
-
- // Local document vars
- document,
- documentElement,
- documentIsHTML,
- rbuggyQSA,
- matches,
-
- // Instance-specific data
- expando = jQuery.expando,
- dirruns = 0,
- done = 0,
- classCache = createCache(),
- tokenCache = createCache(),
- compilerCache = createCache(),
- nonnativeSelectorCache = createCache(),
- sortOrder = function( a, b ) {
- if ( a === b ) {
- hasDuplicate = true;
- }
- return 0;
- },
-
- booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|" +
- "loop|multiple|open|readonly|required|scoped",
-
- // Regular expressions
-
- // https://www.w3.org/TR/css-syntax-3/#ident-token-diagram
- identifier = "(?:\\\\[\\da-fA-F]{1,6}" + whitespace +
- "?|\\\\[^\\r\\n\\f]|[\\w-]|[^\0-\\x7f])+",
-
- // Attribute selectors: https://www.w3.org/TR/selectors/#attribute-selectors
- attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace +
-
- // Operator (capture 2)
- "*([*^$|!~]?=)" + whitespace +
-
- // "Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]"
- "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" +
- whitespace + "*\\]",
-
- pseudos = ":(" + identifier + ")(?:\\((" +
-
- // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:
- // 1. quoted (capture 3; capture 4 or capture 5)
- "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" +
-
- // 2. simple (capture 6)
- "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" +
-
- // 3. anything else (capture 2)
- ".*" +
- ")\\)|)",
-
- // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
- rwhitespace = new RegExp( whitespace + "+", "g" ),
-
- rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
- rleadingCombinator = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" +
- whitespace + "*" ),
- rdescend = new RegExp( whitespace + "|>" ),
-
- rpseudo = new RegExp( pseudos ),
- ridentifier = new RegExp( "^" + identifier + "$" ),
-
- matchExpr = {
- ID: new RegExp( "^#(" + identifier + ")" ),
- CLASS: new RegExp( "^\\.(" + identifier + ")" ),
- TAG: new RegExp( "^(" + identifier + "|[*])" ),
- ATTR: new RegExp( "^" + attributes ),
- PSEUDO: new RegExp( "^" + pseudos ),
- CHILD: new RegExp(
- "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" +
- whitespace + "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" +
- whitespace + "*(\\d+)|))" + whitespace + "*\\)|)", "i" ),
- bool: new RegExp( "^(?:" + booleans + ")$", "i" ),
-
- // For use in libraries implementing .is()
- // We use this for POS matching in `select`
- needsContext: new RegExp( "^" + whitespace +
- "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + whitespace +
- "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" )
- },
-
- rinputs = /^(?:input|select|textarea|button)$/i,
- rheader = /^h\d$/i,
-
- // Easily-parseable/retrievable ID or TAG or CLASS selectors
- rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,
-
- rsibling = /[+~]/,
-
- // CSS escapes
- // https://www.w3.org/TR/CSS21/syndata.html#escaped-characters
- runescape = new RegExp( "\\\\[\\da-fA-F]{1,6}" + whitespace +
- "?|\\\\([^\\r\\n\\f])", "g" ),
- funescape = function( escape, nonHex ) {
- var high = "0x" + escape.slice( 1 ) - 0x10000;
-
- if ( nonHex ) {
-
- // Strip the backslash prefix from a non-hex escape sequence
- return nonHex;
- }
-
- // Replace a hexadecimal escape sequence with the encoded Unicode code point
- // Support: IE <=11+
- // For values outside the Basic Multilingual Plane (BMP), manually construct a
- // surrogate pair
- return high < 0 ?
- String.fromCharCode( high + 0x10000 ) :
- String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );
- },
-
- // Used for iframes; see `setDocument`.
- // Support: IE 9 - 11+, Edge 12 - 18+
- // Removing the function wrapper causes a "Permission Denied"
- // error in IE/Edge.
- unloadHandler = function() {
- setDocument();
- },
-
- inDisabledFieldset = addCombinator(
- function( elem ) {
- return elem.disabled === true && nodeName( elem, "fieldset" );
- },
- { dir: "parentNode", next: "legend" }
- );
-
-// Support: IE <=9 only
-// Accessing document.activeElement can throw unexpectedly
-// https://bugs.jquery.com/ticket/13393
-function safeActiveElement() {
- try {
- return document.activeElement;
- } catch ( err ) { }
-}
-
-// Optimize for push.apply( _, NodeList )
-try {
- push.apply(
- ( arr = slice.call( preferredDoc.childNodes ) ),
- preferredDoc.childNodes
- );
-
- // Support: Android <=4.0
- // Detect silently failing push.apply
- // eslint-disable-next-line no-unused-expressions
- arr[ preferredDoc.childNodes.length ].nodeType;
-} catch ( e ) {
- push = {
- apply: function( target, els ) {
- pushNative.apply( target, slice.call( els ) );
- },
- call: function( target ) {
- pushNative.apply( target, slice.call( arguments, 1 ) );
- }
- };
-}
-
-function find( selector, context, results, seed ) {
- var m, i, elem, nid, match, groups, newSelector,
- newContext = context && context.ownerDocument,
-
- // nodeType defaults to 9, since context defaults to document
- nodeType = context ? context.nodeType : 9;
-
- results = results || [];
-
- // Return early from calls with invalid selector or context
- if ( typeof selector !== "string" || !selector ||
- nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) {
-
- return results;
- }
-
- // Try to shortcut find operations (as opposed to filters) in HTML documents
- if ( !seed ) {
- setDocument( context );
- context = context || document;
-
- if ( documentIsHTML ) {
-
- // If the selector is sufficiently simple, try using a "get*By*" DOM method
- // (excepting DocumentFragment context, where the methods don't exist)
- if ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) {
-
- // ID selector
- if ( ( m = match[ 1 ] ) ) {
-
- // Document context
- if ( nodeType === 9 ) {
- if ( ( elem = context.getElementById( m ) ) ) {
-
- // Support: IE 9 only
- // getElementById can match elements by name instead of ID
- if ( elem.id === m ) {
- push.call( results, elem );
- return results;
- }
- } else {
- return results;
- }
-
- // Element context
- } else {
-
- // Support: IE 9 only
- // getElementById can match elements by name instead of ID
- if ( newContext && ( elem = newContext.getElementById( m ) ) &&
- find.contains( context, elem ) &&
- elem.id === m ) {
-
- push.call( results, elem );
- return results;
- }
- }
-
- // Type selector
- } else if ( match[ 2 ] ) {
- push.apply( results, context.getElementsByTagName( selector ) );
- return results;
-
- // Class selector
- } else if ( ( m = match[ 3 ] ) && context.getElementsByClassName ) {
- push.apply( results, context.getElementsByClassName( m ) );
- return results;
- }
- }
-
- // Take advantage of querySelectorAll
- if ( !nonnativeSelectorCache[ selector + " " ] &&
- ( !rbuggyQSA || !rbuggyQSA.test( selector ) ) ) {
-
- newSelector = selector;
- newContext = context;
-
- // qSA considers elements outside a scoping root when evaluating child or
- // descendant combinators, which is not what we want.
- // In such cases, we work around the behavior by prefixing every selector in the
- // list with an ID selector referencing the scope context.
- // The technique has to be used as well when a leading combinator is used
- // as such selectors are not recognized by querySelectorAll.
- // Thanks to Andrew Dupont for this technique.
- if ( nodeType === 1 &&
- ( rdescend.test( selector ) || rleadingCombinator.test( selector ) ) ) {
-
- // Expand context for sibling selectors
- newContext = rsibling.test( selector ) && testContext( context.parentNode ) ||
- context;
-
- // We can use :scope instead of the ID hack if the browser
- // supports it & if we're not changing the context.
- // Support: IE 11+, Edge 17 - 18+
- // IE/Edge sometimes throw a "Permission denied" error when
- // strict-comparing two documents; shallow comparisons work.
- // eslint-disable-next-line eqeqeq
- if ( newContext != context || !support.scope ) {
-
- // Capture the context ID, setting it first if necessary
- if ( ( nid = context.getAttribute( "id" ) ) ) {
- nid = jQuery.escapeSelector( nid );
- } else {
- context.setAttribute( "id", ( nid = expando ) );
- }
- }
-
- // Prefix every selector in the list
- groups = tokenize( selector );
- i = groups.length;
- while ( i-- ) {
- groups[ i ] = ( nid ? "#" + nid : ":scope" ) + " " +
- toSelector( groups[ i ] );
- }
- newSelector = groups.join( "," );
- }
-
- try {
- push.apply( results,
- newContext.querySelectorAll( newSelector )
- );
- return results;
- } catch ( qsaError ) {
- nonnativeSelectorCache( selector, true );
- } finally {
- if ( nid === expando ) {
- context.removeAttribute( "id" );
- }
- }
- }
- }
- }
-
- // All others
- return select( selector.replace( rtrimCSS, "$1" ), context, results, seed );
-}
-
-/**
- * Create key-value caches of limited size
- * @returns {function(string, object)} Returns the Object data after storing it on itself with
- * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
- * deleting the oldest entry
- */
-function createCache() {
- var keys = [];
-
- function cache( key, value ) {
-
- // Use (key + " ") to avoid collision with native prototype properties
- // (see https://github.com/jquery/sizzle/issues/157)
- if ( keys.push( key + " " ) > Expr.cacheLength ) {
-
- // Only keep the most recent entries
- delete cache[ keys.shift() ];
- }
- return ( cache[ key + " " ] = value );
- }
- return cache;
-}
-
-/**
- * Mark a function for special use by jQuery selector module
- * @param {Function} fn The function to mark
- */
-function markFunction( fn ) {
- fn[ expando ] = true;
- return fn;
-}
-
-/**
- * Support testing using an element
- * @param {Function} fn Passed the created element and returns a boolean result
- */
-function assert( fn ) {
- var el = document.createElement( "fieldset" );
-
- try {
- return !!fn( el );
- } catch ( e ) {
- return false;
- } finally {
-
- // Remove from its parent by default
- if ( el.parentNode ) {
- el.parentNode.removeChild( el );
- }
-
- // release memory in IE
- el = null;
- }
-}
-
-/**
- * Returns a function to use in pseudos for input types
- * @param {String} type
- */
-function createInputPseudo( type ) {
- return function( elem ) {
- return nodeName( elem, "input" ) && elem.type === type;
- };
-}
-
-/**
- * Returns a function to use in pseudos for buttons
- * @param {String} type
- */
-function createButtonPseudo( type ) {
- return function( elem ) {
- return ( nodeName( elem, "input" ) || nodeName( elem, "button" ) ) &&
- elem.type === type;
- };
-}
-
-/**
- * Returns a function to use in pseudos for :enabled/:disabled
- * @param {Boolean} disabled true for :disabled; false for :enabled
- */
-function createDisabledPseudo( disabled ) {
-
- // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable
- return function( elem ) {
-
- // Only certain elements can match :enabled or :disabled
- // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled
- // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled
- if ( "form" in elem ) {
-
- // Check for inherited disabledness on relevant non-disabled elements:
- // * listed form-associated elements in a disabled fieldset
- // https://html.spec.whatwg.org/multipage/forms.html#category-listed
- // https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled
- // * option elements in a disabled optgroup
- // https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled
- // All such elements have a "form" property.
- if ( elem.parentNode && elem.disabled === false ) {
-
- // Option elements defer to a parent optgroup if present
- if ( "label" in elem ) {
- if ( "label" in elem.parentNode ) {
- return elem.parentNode.disabled === disabled;
- } else {
- return elem.disabled === disabled;
- }
- }
-
- // Support: IE 6 - 11+
- // Use the isDisabled shortcut property to check for disabled fieldset ancestors
- return elem.isDisabled === disabled ||
-
- // Where there is no isDisabled, check manually
- elem.isDisabled !== !disabled &&
- inDisabledFieldset( elem ) === disabled;
- }
-
- return elem.disabled === disabled;
-
- // Try to winnow out elements that can't be disabled before trusting the disabled property.
- // Some victims get caught in our net (label, legend, menu, track), but it shouldn't
- // even exist on them, let alone have a boolean value.
- } else if ( "label" in elem ) {
- return elem.disabled === disabled;
- }
-
- // Remaining elements are neither :enabled nor :disabled
- return false;
- };
-}
-
-/**
- * Returns a function to use in pseudos for positionals
- * @param {Function} fn
- */
-function createPositionalPseudo( fn ) {
- return markFunction( function( argument ) {
- argument = +argument;
- return markFunction( function( seed, matches ) {
- var j,
- matchIndexes = fn( [], seed.length, argument ),
- i = matchIndexes.length;
-
- // Match elements found at the specified indexes
- while ( i-- ) {
- if ( seed[ ( j = matchIndexes[ i ] ) ] ) {
- seed[ j ] = !( matches[ j ] = seed[ j ] );
- }
- }
- } );
- } );
-}
-
-/**
- * Checks a node for validity as a jQuery selector context
- * @param {Element|Object=} context
- * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value
- */
-function testContext( context ) {
- return context && typeof context.getElementsByTagName !== "undefined" && context;
-}
-
-/**
- * Sets document-related variables once based on the current document
- * @param {Element|Object} [node] An element or document object to use to set the document
- * @returns {Object} Returns the current document
- */
-function setDocument( node ) {
- var subWindow,
- doc = node ? node.ownerDocument || node : preferredDoc;
-
- // Return early if doc is invalid or already selected
- // Support: IE 11+, Edge 17 - 18+
- // IE/Edge sometimes throw a "Permission denied" error when strict-comparing
- // two documents; shallow comparisons work.
- // eslint-disable-next-line eqeqeq
- if ( doc == document || doc.nodeType !== 9 || !doc.documentElement ) {
- return document;
- }
-
- // Update global variables
- document = doc;
- documentElement = document.documentElement;
- documentIsHTML = !jQuery.isXMLDoc( document );
-
- // Support: iOS 7 only, IE 9 - 11+
- // Older browsers didn't support unprefixed `matches`.
- matches = documentElement.matches ||
- documentElement.webkitMatchesSelector ||
- documentElement.msMatchesSelector;
-
- // Support: IE 9 - 11+, Edge 12 - 18+
- // Accessing iframe documents after unload throws "permission denied" errors
- // (see trac-13936).
- // Limit the fix to IE & Edge Legacy; despite Edge 15+ implementing `matches`,
- // all IE 9+ and Edge Legacy versions implement `msMatchesSelector` as well.
- if ( documentElement.msMatchesSelector &&
-
- // Support: IE 11+, Edge 17 - 18+
- // IE/Edge sometimes throw a "Permission denied" error when strict-comparing
- // two documents; shallow comparisons work.
- // eslint-disable-next-line eqeqeq
- preferredDoc != document &&
- ( subWindow = document.defaultView ) && subWindow.top !== subWindow ) {
-
- // Support: IE 9 - 11+, Edge 12 - 18+
- subWindow.addEventListener( "unload", unloadHandler );
- }
-
- // Support: IE <10
- // Check if getElementById returns elements by name
- // The broken getElementById methods don't pick up programmatically-set names,
- // so use a roundabout getElementsByName test
- support.getById = assert( function( el ) {
- documentElement.appendChild( el ).id = jQuery.expando;
- return !document.getElementsByName ||
- !document.getElementsByName( jQuery.expando ).length;
- } );
-
- // Support: IE 9 only
- // Check to see if it's possible to do matchesSelector
- // on a disconnected node.
- support.disconnectedMatch = assert( function( el ) {
- return matches.call( el, "*" );
- } );
-
- // Support: IE 9 - 11+, Edge 12 - 18+
- // IE/Edge don't support the :scope pseudo-class.
- support.scope = assert( function() {
- return document.querySelectorAll( ":scope" );
- } );
-
- // Support: Chrome 105 - 111 only, Safari 15.4 - 16.3 only
- // Make sure the `:has()` argument is parsed unforgivingly.
- // We include `*` in the test to detect buggy implementations that are
- // _selectively_ forgiving (specifically when the list includes at least
- // one valid selector).
- // Note that we treat complete lack of support for `:has()` as if it were
- // spec-compliant support, which is fine because use of `:has()` in such
- // environments will fail in the qSA path and fall back to jQuery traversal
- // anyway.
- support.cssHas = assert( function() {
- try {
- document.querySelector( ":has(*,:jqfake)" );
- return false;
- } catch ( e ) {
- return true;
- }
- } );
-
- // ID filter and find
- if ( support.getById ) {
- Expr.filter.ID = function( id ) {
- var attrId = id.replace( runescape, funescape );
- return function( elem ) {
- return elem.getAttribute( "id" ) === attrId;
- };
- };
- Expr.find.ID = function( id, context ) {
- if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
- var elem = context.getElementById( id );
- return elem ? [ elem ] : [];
- }
- };
- } else {
- Expr.filter.ID = function( id ) {
- var attrId = id.replace( runescape, funescape );
- return function( elem ) {
- var node = typeof elem.getAttributeNode !== "undefined" &&
- elem.getAttributeNode( "id" );
- return node && node.value === attrId;
- };
- };
-
- // Support: IE 6 - 7 only
- // getElementById is not reliable as a find shortcut
- Expr.find.ID = function( id, context ) {
- if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
- var node, i, elems,
- elem = context.getElementById( id );
-
- if ( elem ) {
-
- // Verify the id attribute
- node = elem.getAttributeNode( "id" );
- if ( node && node.value === id ) {
- return [ elem ];
- }
-
- // Fall back on getElementsByName
- elems = context.getElementsByName( id );
- i = 0;
- while ( ( elem = elems[ i++ ] ) ) {
- node = elem.getAttributeNode( "id" );
- if ( node && node.value === id ) {
- return [ elem ];
- }
- }
- }
-
- return [];
- }
- };
- }
-
- // Tag
- Expr.find.TAG = function( tag, context ) {
- if ( typeof context.getElementsByTagName !== "undefined" ) {
- return context.getElementsByTagName( tag );
-
- // DocumentFragment nodes don't have gEBTN
- } else {
- return context.querySelectorAll( tag );
- }
- };
-
- // Class
- Expr.find.CLASS = function( className, context ) {
- if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) {
- return context.getElementsByClassName( className );
- }
- };
-
- /* QSA/matchesSelector
- ---------------------------------------------------------------------- */
-
- // QSA and matchesSelector support
-
- rbuggyQSA = [];
-
- // Build QSA regex
- // Regex strategy adopted from Diego Perini
- assert( function( el ) {
-
- var input;
-
- documentElement.appendChild( el ).innerHTML =
- " " +
- "" +
- " ";
-
- // Support: iOS <=7 - 8 only
- // Boolean attributes and "value" are not treated correctly in some XML documents
- if ( !el.querySelectorAll( "[selected]" ).length ) {
- rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" );
- }
-
- // Support: iOS <=7 - 8 only
- if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) {
- rbuggyQSA.push( "~=" );
- }
-
- // Support: iOS 8 only
- // https://bugs.webkit.org/show_bug.cgi?id=136851
- // In-page `selector#id sibling-combinator selector` fails
- if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) {
- rbuggyQSA.push( ".#.+[+~]" );
- }
-
- // Support: Chrome <=105+, Firefox <=104+, Safari <=15.4+
- // In some of the document kinds, these selectors wouldn't work natively.
- // This is probably OK but for backwards compatibility we want to maintain
- // handling them through jQuery traversal in jQuery 3.x.
- if ( !el.querySelectorAll( ":checked" ).length ) {
- rbuggyQSA.push( ":checked" );
- }
-
- // Support: Windows 8 Native Apps
- // The type and name attributes are restricted during .innerHTML assignment
- input = document.createElement( "input" );
- input.setAttribute( "type", "hidden" );
- el.appendChild( input ).setAttribute( "name", "D" );
-
- // Support: IE 9 - 11+
- // IE's :disabled selector does not pick up the children of disabled fieldsets
- // Support: Chrome <=105+, Firefox <=104+, Safari <=15.4+
- // In some of the document kinds, these selectors wouldn't work natively.
- // This is probably OK but for backwards compatibility we want to maintain
- // handling them through jQuery traversal in jQuery 3.x.
- documentElement.appendChild( el ).disabled = true;
- if ( el.querySelectorAll( ":disabled" ).length !== 2 ) {
- rbuggyQSA.push( ":enabled", ":disabled" );
- }
-
- // Support: IE 11+, Edge 15 - 18+
- // IE 11/Edge don't find elements on a `[name='']` query in some cases.
- // Adding a temporary attribute to the document before the selection works
- // around the issue.
- // Interestingly, IE 10 & older don't seem to have the issue.
- input = document.createElement( "input" );
- input.setAttribute( "name", "" );
- el.appendChild( input );
- if ( !el.querySelectorAll( "[name='']" ).length ) {
- rbuggyQSA.push( "\\[" + whitespace + "*name" + whitespace + "*=" +
- whitespace + "*(?:''|\"\")" );
- }
- } );
-
- if ( !support.cssHas ) {
-
- // Support: Chrome 105 - 110+, Safari 15.4 - 16.3+
- // Our regular `try-catch` mechanism fails to detect natively-unsupported
- // pseudo-classes inside `:has()` (such as `:has(:contains("Foo"))`)
- // in browsers that parse the `:has()` argument as a forgiving selector list.
- // https://drafts.csswg.org/selectors/#relational now requires the argument
- // to be parsed unforgivingly, but browsers have not yet fully adjusted.
- rbuggyQSA.push( ":has" );
- }
-
- rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join( "|" ) );
-
- /* Sorting
- ---------------------------------------------------------------------- */
-
- // Document order sorting
- sortOrder = function( a, b ) {
-
- // Flag for duplicate removal
- if ( a === b ) {
- hasDuplicate = true;
- return 0;
- }
-
- // Sort on method existence if only one input has compareDocumentPosition
- var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;
- if ( compare ) {
- return compare;
- }
-
- // Calculate position if both inputs belong to the same document
- // Support: IE 11+, Edge 17 - 18+
- // IE/Edge sometimes throw a "Permission denied" error when strict-comparing
- // two documents; shallow comparisons work.
- // eslint-disable-next-line eqeqeq
- compare = ( a.ownerDocument || a ) == ( b.ownerDocument || b ) ?
- a.compareDocumentPosition( b ) :
-
- // Otherwise we know they are disconnected
- 1;
-
- // Disconnected nodes
- if ( compare & 1 ||
- ( !support.sortDetached && b.compareDocumentPosition( a ) === compare ) ) {
-
- // Choose the first element that is related to our preferred document
- // Support: IE 11+, Edge 17 - 18+
- // IE/Edge sometimes throw a "Permission denied" error when strict-comparing
- // two documents; shallow comparisons work.
- // eslint-disable-next-line eqeqeq
- if ( a === document || a.ownerDocument == preferredDoc &&
- find.contains( preferredDoc, a ) ) {
- return -1;
- }
-
- // Support: IE 11+, Edge 17 - 18+
- // IE/Edge sometimes throw a "Permission denied" error when strict-comparing
- // two documents; shallow comparisons work.
- // eslint-disable-next-line eqeqeq
- if ( b === document || b.ownerDocument == preferredDoc &&
- find.contains( preferredDoc, b ) ) {
- return 1;
- }
-
- // Maintain original order
- return sortInput ?
- ( indexOf.call( sortInput, a ) - indexOf.call( sortInput, b ) ) :
- 0;
- }
-
- return compare & 4 ? -1 : 1;
- };
-
- return document;
-}
-
-find.matches = function( expr, elements ) {
- return find( expr, null, null, elements );
-};
-
-find.matchesSelector = function( elem, expr ) {
- setDocument( elem );
-
- if ( documentIsHTML &&
- !nonnativeSelectorCache[ expr + " " ] &&
- ( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) {
-
- try {
- var ret = matches.call( elem, expr );
-
- // IE 9's matchesSelector returns false on disconnected nodes
- if ( ret || support.disconnectedMatch ||
-
- // As well, disconnected nodes are said to be in a document
- // fragment in IE 9
- elem.document && elem.document.nodeType !== 11 ) {
- return ret;
- }
- } catch ( e ) {
- nonnativeSelectorCache( expr, true );
- }
- }
-
- return find( expr, document, null, [ elem ] ).length > 0;
-};
-
-find.contains = function( context, elem ) {
-
- // Set document vars if needed
- // Support: IE 11+, Edge 17 - 18+
- // IE/Edge sometimes throw a "Permission denied" error when strict-comparing
- // two documents; shallow comparisons work.
- // eslint-disable-next-line eqeqeq
- if ( ( context.ownerDocument || context ) != document ) {
- setDocument( context );
- }
- return jQuery.contains( context, elem );
-};
-
-
-find.attr = function( elem, name ) {
-
- // Set document vars if needed
- // Support: IE 11+, Edge 17 - 18+
- // IE/Edge sometimes throw a "Permission denied" error when strict-comparing
- // two documents; shallow comparisons work.
- // eslint-disable-next-line eqeqeq
- if ( ( elem.ownerDocument || elem ) != document ) {
- setDocument( elem );
- }
-
- var fn = Expr.attrHandle[ name.toLowerCase() ],
-
- // Don't get fooled by Object.prototype properties (see trac-13807)
- val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?
- fn( elem, name, !documentIsHTML ) :
- undefined;
-
- if ( val !== undefined ) {
- return val;
- }
-
- return elem.getAttribute( name );
-};
-
-find.error = function( msg ) {
- throw new Error( "Syntax error, unrecognized expression: " + msg );
-};
-
-/**
- * Document sorting and removing duplicates
- * @param {ArrayLike} results
- */
-jQuery.uniqueSort = function( results ) {
- var elem,
- duplicates = [],
- j = 0,
- i = 0;
-
- // Unless we *know* we can detect duplicates, assume their presence
- //
- // Support: Android <=4.0+
- // Testing for detecting duplicates is unpredictable so instead assume we can't
- // depend on duplicate detection in all browsers without a stable sort.
- hasDuplicate = !support.sortStable;
- sortInput = !support.sortStable && slice.call( results, 0 );
- sort.call( results, sortOrder );
-
- if ( hasDuplicate ) {
- while ( ( elem = results[ i++ ] ) ) {
- if ( elem === results[ i ] ) {
- j = duplicates.push( i );
- }
- }
- while ( j-- ) {
- splice.call( results, duplicates[ j ], 1 );
- }
- }
-
- // Clear input after sorting to release objects
- // See https://github.com/jquery/sizzle/pull/225
- sortInput = null;
-
- return results;
-};
-
-jQuery.fn.uniqueSort = function() {
- return this.pushStack( jQuery.uniqueSort( slice.apply( this ) ) );
-};
-
-Expr = jQuery.expr = {
-
- // Can be adjusted by the user
- cacheLength: 50,
-
- createPseudo: markFunction,
-
- match: matchExpr,
-
- attrHandle: {},
-
- find: {},
-
- relative: {
- ">": { dir: "parentNode", first: true },
- " ": { dir: "parentNode" },
- "+": { dir: "previousSibling", first: true },
- "~": { dir: "previousSibling" }
- },
-
- preFilter: {
- ATTR: function( match ) {
- match[ 1 ] = match[ 1 ].replace( runescape, funescape );
-
- // Move the given value to match[3] whether quoted or unquoted
- match[ 3 ] = ( match[ 3 ] || match[ 4 ] || match[ 5 ] || "" )
- .replace( runescape, funescape );
-
- if ( match[ 2 ] === "~=" ) {
- match[ 3 ] = " " + match[ 3 ] + " ";
- }
-
- return match.slice( 0, 4 );
- },
-
- CHILD: function( match ) {
-
- /* matches from matchExpr["CHILD"]
- 1 type (only|nth|...)
- 2 what (child|of-type)
- 3 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
- 4 xn-component of xn+y argument ([+-]?\d*n|)
- 5 sign of xn-component
- 6 x of xn-component
- 7 sign of y-component
- 8 y of y-component
- */
- match[ 1 ] = match[ 1 ].toLowerCase();
-
- if ( match[ 1 ].slice( 0, 3 ) === "nth" ) {
-
- // nth-* requires argument
- if ( !match[ 3 ] ) {
- find.error( match[ 0 ] );
- }
-
- // numeric x and y parameters for Expr.filter.CHILD
- // remember that false/true cast respectively to 0/1
- match[ 4 ] = +( match[ 4 ] ?
- match[ 5 ] + ( match[ 6 ] || 1 ) :
- 2 * ( match[ 3 ] === "even" || match[ 3 ] === "odd" )
- );
- match[ 5 ] = +( ( match[ 7 ] + match[ 8 ] ) || match[ 3 ] === "odd" );
-
- // other types prohibit arguments
- } else if ( match[ 3 ] ) {
- find.error( match[ 0 ] );
- }
-
- return match;
- },
-
- PSEUDO: function( match ) {
- var excess,
- unquoted = !match[ 6 ] && match[ 2 ];
-
- if ( matchExpr.CHILD.test( match[ 0 ] ) ) {
- return null;
- }
-
- // Accept quoted arguments as-is
- if ( match[ 3 ] ) {
- match[ 2 ] = match[ 4 ] || match[ 5 ] || "";
-
- // Strip excess characters from unquoted arguments
- } else if ( unquoted && rpseudo.test( unquoted ) &&
-
- // Get excess from tokenize (recursively)
- ( excess = tokenize( unquoted, true ) ) &&
-
- // advance to the next closing parenthesis
- ( excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length ) ) {
-
- // excess is a negative index
- match[ 0 ] = match[ 0 ].slice( 0, excess );
- match[ 2 ] = unquoted.slice( 0, excess );
- }
-
- // Return only captures needed by the pseudo filter method (type and argument)
- return match.slice( 0, 3 );
- }
- },
-
- filter: {
-
- TAG: function( nodeNameSelector ) {
- var expectedNodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();
- return nodeNameSelector === "*" ?
- function() {
- return true;
- } :
- function( elem ) {
- return nodeName( elem, expectedNodeName );
- };
- },
-
- CLASS: function( className ) {
- var pattern = classCache[ className + " " ];
-
- return pattern ||
- ( pattern = new RegExp( "(^|" + whitespace + ")" + className +
- "(" + whitespace + "|$)" ) ) &&
- classCache( className, function( elem ) {
- return pattern.test(
- typeof elem.className === "string" && elem.className ||
- typeof elem.getAttribute !== "undefined" &&
- elem.getAttribute( "class" ) ||
- ""
- );
- } );
- },
-
- ATTR: function( name, operator, check ) {
- return function( elem ) {
- var result = find.attr( elem, name );
-
- if ( result == null ) {
- return operator === "!=";
- }
- if ( !operator ) {
- return true;
- }
-
- result += "";
-
- if ( operator === "=" ) {
- return result === check;
- }
- if ( operator === "!=" ) {
- return result !== check;
- }
- if ( operator === "^=" ) {
- return check && result.indexOf( check ) === 0;
- }
- if ( operator === "*=" ) {
- return check && result.indexOf( check ) > -1;
- }
- if ( operator === "$=" ) {
- return check && result.slice( -check.length ) === check;
- }
- if ( operator === "~=" ) {
- return ( " " + result.replace( rwhitespace, " " ) + " " )
- .indexOf( check ) > -1;
- }
- if ( operator === "|=" ) {
- return result === check || result.slice( 0, check.length + 1 ) === check + "-";
- }
-
- return false;
- };
- },
-
- CHILD: function( type, what, _argument, first, last ) {
- var simple = type.slice( 0, 3 ) !== "nth",
- forward = type.slice( -4 ) !== "last",
- ofType = what === "of-type";
-
- return first === 1 && last === 0 ?
-
- // Shortcut for :nth-*(n)
- function( elem ) {
- return !!elem.parentNode;
- } :
-
- function( elem, _context, xml ) {
- var cache, outerCache, node, nodeIndex, start,
- dir = simple !== forward ? "nextSibling" : "previousSibling",
- parent = elem.parentNode,
- name = ofType && elem.nodeName.toLowerCase(),
- useCache = !xml && !ofType,
- diff = false;
-
- if ( parent ) {
-
- // :(first|last|only)-(child|of-type)
- if ( simple ) {
- while ( dir ) {
- node = elem;
- while ( ( node = node[ dir ] ) ) {
- if ( ofType ?
- nodeName( node, name ) :
- node.nodeType === 1 ) {
-
- return false;
- }
- }
-
- // Reverse direction for :only-* (if we haven't yet done so)
- start = dir = type === "only" && !start && "nextSibling";
- }
- return true;
- }
-
- start = [ forward ? parent.firstChild : parent.lastChild ];
-
- // non-xml :nth-child(...) stores cache data on `parent`
- if ( forward && useCache ) {
-
- // Seek `elem` from a previously-cached index
- outerCache = parent[ expando ] || ( parent[ expando ] = {} );
- cache = outerCache[ type ] || [];
- nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
- diff = nodeIndex && cache[ 2 ];
- node = nodeIndex && parent.childNodes[ nodeIndex ];
-
- while ( ( node = ++nodeIndex && node && node[ dir ] ||
-
- // Fallback to seeking `elem` from the start
- ( diff = nodeIndex = 0 ) || start.pop() ) ) {
-
- // When found, cache indexes on `parent` and break
- if ( node.nodeType === 1 && ++diff && node === elem ) {
- outerCache[ type ] = [ dirruns, nodeIndex, diff ];
- break;
- }
- }
-
- } else {
-
- // Use previously-cached element index if available
- if ( useCache ) {
- outerCache = elem[ expando ] || ( elem[ expando ] = {} );
- cache = outerCache[ type ] || [];
- nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
- diff = nodeIndex;
- }
-
- // xml :nth-child(...)
- // or :nth-last-child(...) or :nth(-last)?-of-type(...)
- if ( diff === false ) {
-
- // Use the same loop as above to seek `elem` from the start
- while ( ( node = ++nodeIndex && node && node[ dir ] ||
- ( diff = nodeIndex = 0 ) || start.pop() ) ) {
-
- if ( ( ofType ?
- nodeName( node, name ) :
- node.nodeType === 1 ) &&
- ++diff ) {
-
- // Cache the index of each encountered element
- if ( useCache ) {
- outerCache = node[ expando ] ||
- ( node[ expando ] = {} );
- outerCache[ type ] = [ dirruns, diff ];
- }
-
- if ( node === elem ) {
- break;
- }
- }
- }
- }
- }
-
- // Incorporate the offset, then check against cycle size
- diff -= last;
- return diff === first || ( diff % first === 0 && diff / first >= 0 );
- }
- };
- },
-
- PSEUDO: function( pseudo, argument ) {
-
- // pseudo-class names are case-insensitive
- // https://www.w3.org/TR/selectors/#pseudo-classes
- // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
- // Remember that setFilters inherits from pseudos
- var args,
- fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||
- find.error( "unsupported pseudo: " + pseudo );
-
- // The user may use createPseudo to indicate that
- // arguments are needed to create the filter function
- // just as jQuery does
- if ( fn[ expando ] ) {
- return fn( argument );
- }
-
- // But maintain support for old signatures
- if ( fn.length > 1 ) {
- args = [ pseudo, pseudo, "", argument ];
- return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?
- markFunction( function( seed, matches ) {
- var idx,
- matched = fn( seed, argument ),
- i = matched.length;
- while ( i-- ) {
- idx = indexOf.call( seed, matched[ i ] );
- seed[ idx ] = !( matches[ idx ] = matched[ i ] );
- }
- } ) :
- function( elem ) {
- return fn( elem, 0, args );
- };
- }
-
- return fn;
- }
- },
-
- pseudos: {
-
- // Potentially complex pseudos
- not: markFunction( function( selector ) {
-
- // Trim the selector passed to compile
- // to avoid treating leading and trailing
- // spaces as combinators
- var input = [],
- results = [],
- matcher = compile( selector.replace( rtrimCSS, "$1" ) );
-
- return matcher[ expando ] ?
- markFunction( function( seed, matches, _context, xml ) {
- var elem,
- unmatched = matcher( seed, null, xml, [] ),
- i = seed.length;
-
- // Match elements unmatched by `matcher`
- while ( i-- ) {
- if ( ( elem = unmatched[ i ] ) ) {
- seed[ i ] = !( matches[ i ] = elem );
- }
- }
- } ) :
- function( elem, _context, xml ) {
- input[ 0 ] = elem;
- matcher( input, null, xml, results );
-
- // Don't keep the element
- // (see https://github.com/jquery/sizzle/issues/299)
- input[ 0 ] = null;
- return !results.pop();
- };
- } ),
-
- has: markFunction( function( selector ) {
- return function( elem ) {
- return find( selector, elem ).length > 0;
- };
- } ),
-
- contains: markFunction( function( text ) {
- text = text.replace( runescape, funescape );
- return function( elem ) {
- return ( elem.textContent || jQuery.text( elem ) ).indexOf( text ) > -1;
- };
- } ),
-
- // "Whether an element is represented by a :lang() selector
- // is based solely on the element's language value
- // being equal to the identifier C,
- // or beginning with the identifier C immediately followed by "-".
- // The matching of C against the element's language value is performed case-insensitively.
- // The identifier C does not have to be a valid language name."
- // https://www.w3.org/TR/selectors/#lang-pseudo
- lang: markFunction( function( lang ) {
-
- // lang value must be a valid identifier
- if ( !ridentifier.test( lang || "" ) ) {
- find.error( "unsupported lang: " + lang );
- }
- lang = lang.replace( runescape, funescape ).toLowerCase();
- return function( elem ) {
- var elemLang;
- do {
- if ( ( elemLang = documentIsHTML ?
- elem.lang :
- elem.getAttribute( "xml:lang" ) || elem.getAttribute( "lang" ) ) ) {
-
- elemLang = elemLang.toLowerCase();
- return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0;
- }
- } while ( ( elem = elem.parentNode ) && elem.nodeType === 1 );
- return false;
- };
- } ),
-
- // Miscellaneous
- target: function( elem ) {
- var hash = window.location && window.location.hash;
- return hash && hash.slice( 1 ) === elem.id;
- },
-
- root: function( elem ) {
- return elem === documentElement;
- },
-
- focus: function( elem ) {
- return elem === safeActiveElement() &&
- document.hasFocus() &&
- !!( elem.type || elem.href || ~elem.tabIndex );
- },
-
- // Boolean properties
- enabled: createDisabledPseudo( false ),
- disabled: createDisabledPseudo( true ),
-
- checked: function( elem ) {
-
- // In CSS3, :checked should return both checked and selected elements
- // https://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
- return ( nodeName( elem, "input" ) && !!elem.checked ) ||
- ( nodeName( elem, "option" ) && !!elem.selected );
- },
-
- selected: function( elem ) {
-
- // Support: IE <=11+
- // Accessing the selectedIndex property
- // forces the browser to treat the default option as
- // selected when in an optgroup.
- if ( elem.parentNode ) {
- // eslint-disable-next-line no-unused-expressions
- elem.parentNode.selectedIndex;
- }
-
- return elem.selected === true;
- },
-
- // Contents
- empty: function( elem ) {
-
- // https://www.w3.org/TR/selectors/#empty-pseudo
- // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),
- // but not by others (comment: 8; processing instruction: 7; etc.)
- // nodeType < 6 works because attributes (2) do not appear as children
- for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
- if ( elem.nodeType < 6 ) {
- return false;
- }
- }
- return true;
- },
-
- parent: function( elem ) {
- return !Expr.pseudos.empty( elem );
- },
-
- // Element/input types
- header: function( elem ) {
- return rheader.test( elem.nodeName );
- },
-
- input: function( elem ) {
- return rinputs.test( elem.nodeName );
- },
-
- button: function( elem ) {
- return nodeName( elem, "input" ) && elem.type === "button" ||
- nodeName( elem, "button" );
- },
-
- text: function( elem ) {
- var attr;
- return nodeName( elem, "input" ) && elem.type === "text" &&
-
- // Support: IE <10 only
- // New HTML5 attribute values (e.g., "search") appear
- // with elem.type === "text"
- ( ( attr = elem.getAttribute( "type" ) ) == null ||
- attr.toLowerCase() === "text" );
- },
-
- // Position-in-collection
- first: createPositionalPseudo( function() {
- return [ 0 ];
- } ),
-
- last: createPositionalPseudo( function( _matchIndexes, length ) {
- return [ length - 1 ];
- } ),
-
- eq: createPositionalPseudo( function( _matchIndexes, length, argument ) {
- return [ argument < 0 ? argument + length : argument ];
- } ),
-
- even: createPositionalPseudo( function( matchIndexes, length ) {
- var i = 0;
- for ( ; i < length; i += 2 ) {
- matchIndexes.push( i );
- }
- return matchIndexes;
- } ),
-
- odd: createPositionalPseudo( function( matchIndexes, length ) {
- var i = 1;
- for ( ; i < length; i += 2 ) {
- matchIndexes.push( i );
- }
- return matchIndexes;
- } ),
-
- lt: createPositionalPseudo( function( matchIndexes, length, argument ) {
- var i;
-
- if ( argument < 0 ) {
- i = argument + length;
- } else if ( argument > length ) {
- i = length;
- } else {
- i = argument;
- }
-
- for ( ; --i >= 0; ) {
- matchIndexes.push( i );
- }
- return matchIndexes;
- } ),
-
- gt: createPositionalPseudo( function( matchIndexes, length, argument ) {
- var i = argument < 0 ? argument + length : argument;
- for ( ; ++i < length; ) {
- matchIndexes.push( i );
- }
- return matchIndexes;
- } )
- }
-};
-
-Expr.pseudos.nth = Expr.pseudos.eq;
-
-// Add button/input type pseudos
-for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {
- Expr.pseudos[ i ] = createInputPseudo( i );
-}
-for ( i in { submit: true, reset: true } ) {
- Expr.pseudos[ i ] = createButtonPseudo( i );
-}
-
-// Easy API for creating new setFilters
-function setFilters() {}
-setFilters.prototype = Expr.filters = Expr.pseudos;
-Expr.setFilters = new setFilters();
-
-function tokenize( selector, parseOnly ) {
- var matched, match, tokens, type,
- soFar, groups, preFilters,
- cached = tokenCache[ selector + " " ];
-
- if ( cached ) {
- return parseOnly ? 0 : cached.slice( 0 );
- }
-
- soFar = selector;
- groups = [];
- preFilters = Expr.preFilter;
-
- while ( soFar ) {
-
- // Comma and first run
- if ( !matched || ( match = rcomma.exec( soFar ) ) ) {
- if ( match ) {
-
- // Don't consume trailing commas as valid
- soFar = soFar.slice( match[ 0 ].length ) || soFar;
- }
- groups.push( ( tokens = [] ) );
- }
-
- matched = false;
-
- // Combinators
- if ( ( match = rleadingCombinator.exec( soFar ) ) ) {
- matched = match.shift();
- tokens.push( {
- value: matched,
-
- // Cast descendant combinators to space
- type: match[ 0 ].replace( rtrimCSS, " " )
- } );
- soFar = soFar.slice( matched.length );
- }
-
- // Filters
- for ( type in Expr.filter ) {
- if ( ( match = matchExpr[ type ].exec( soFar ) ) && ( !preFilters[ type ] ||
- ( match = preFilters[ type ]( match ) ) ) ) {
- matched = match.shift();
- tokens.push( {
- value: matched,
- type: type,
- matches: match
- } );
- soFar = soFar.slice( matched.length );
- }
- }
-
- if ( !matched ) {
- break;
- }
- }
-
- // Return the length of the invalid excess
- // if we're just parsing
- // Otherwise, throw an error or return tokens
- if ( parseOnly ) {
- return soFar.length;
- }
-
- return soFar ?
- find.error( selector ) :
-
- // Cache the tokens
- tokenCache( selector, groups ).slice( 0 );
-}
-
-function toSelector( tokens ) {
- var i = 0,
- len = tokens.length,
- selector = "";
- for ( ; i < len; i++ ) {
- selector += tokens[ i ].value;
- }
- return selector;
-}
-
-function addCombinator( matcher, combinator, base ) {
- var dir = combinator.dir,
- skip = combinator.next,
- key = skip || dir,
- checkNonElements = base && key === "parentNode",
- doneName = done++;
-
- return combinator.first ?
-
- // Check against closest ancestor/preceding element
- function( elem, context, xml ) {
- while ( ( elem = elem[ dir ] ) ) {
- if ( elem.nodeType === 1 || checkNonElements ) {
- return matcher( elem, context, xml );
- }
- }
- return false;
- } :
-
- // Check against all ancestor/preceding elements
- function( elem, context, xml ) {
- var oldCache, outerCache,
- newCache = [ dirruns, doneName ];
-
- // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching
- if ( xml ) {
- while ( ( elem = elem[ dir ] ) ) {
- if ( elem.nodeType === 1 || checkNonElements ) {
- if ( matcher( elem, context, xml ) ) {
- return true;
- }
- }
- }
- } else {
- while ( ( elem = elem[ dir ] ) ) {
- if ( elem.nodeType === 1 || checkNonElements ) {
- outerCache = elem[ expando ] || ( elem[ expando ] = {} );
-
- if ( skip && nodeName( elem, skip ) ) {
- elem = elem[ dir ] || elem;
- } else if ( ( oldCache = outerCache[ key ] ) &&
- oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {
-
- // Assign to newCache so results back-propagate to previous elements
- return ( newCache[ 2 ] = oldCache[ 2 ] );
- } else {
-
- // Reuse newcache so results back-propagate to previous elements
- outerCache[ key ] = newCache;
-
- // A match means we're done; a fail means we have to keep checking
- if ( ( newCache[ 2 ] = matcher( elem, context, xml ) ) ) {
- return true;
- }
- }
- }
- }
- }
- return false;
- };
-}
-
-function elementMatcher( matchers ) {
- return matchers.length > 1 ?
- function( elem, context, xml ) {
- var i = matchers.length;
- while ( i-- ) {
- if ( !matchers[ i ]( elem, context, xml ) ) {
- return false;
- }
- }
- return true;
- } :
- matchers[ 0 ];
-}
-
-function multipleContexts( selector, contexts, results ) {
- var i = 0,
- len = contexts.length;
- for ( ; i < len; i++ ) {
- find( selector, contexts[ i ], results );
- }
- return results;
-}
-
-function condense( unmatched, map, filter, context, xml ) {
- var elem,
- newUnmatched = [],
- i = 0,
- len = unmatched.length,
- mapped = map != null;
-
- for ( ; i < len; i++ ) {
- if ( ( elem = unmatched[ i ] ) ) {
- if ( !filter || filter( elem, context, xml ) ) {
- newUnmatched.push( elem );
- if ( mapped ) {
- map.push( i );
- }
- }
- }
- }
-
- return newUnmatched;
-}
-
-function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
- if ( postFilter && !postFilter[ expando ] ) {
- postFilter = setMatcher( postFilter );
- }
- if ( postFinder && !postFinder[ expando ] ) {
- postFinder = setMatcher( postFinder, postSelector );
- }
- return markFunction( function( seed, results, context, xml ) {
- var temp, i, elem, matcherOut,
- preMap = [],
- postMap = [],
- preexisting = results.length,
-
- // Get initial elements from seed or context
- elems = seed ||
- multipleContexts( selector || "*",
- context.nodeType ? [ context ] : context, [] ),
-
- // Prefilter to get matcher input, preserving a map for seed-results synchronization
- matcherIn = preFilter && ( seed || !selector ) ?
- condense( elems, preMap, preFilter, context, xml ) :
- elems;
-
- if ( matcher ) {
-
- // If we have a postFinder, or filtered seed, or non-seed postFilter
- // or preexisting results,
- matcherOut = postFinder || ( seed ? preFilter : preexisting || postFilter ) ?
-
- // ...intermediate processing is necessary
- [] :
-
- // ...otherwise use results directly
- results;
-
- // Find primary matches
- matcher( matcherIn, matcherOut, context, xml );
- } else {
- matcherOut = matcherIn;
- }
-
- // Apply postFilter
- if ( postFilter ) {
- temp = condense( matcherOut, postMap );
- postFilter( temp, [], context, xml );
-
- // Un-match failing elements by moving them back to matcherIn
- i = temp.length;
- while ( i-- ) {
- if ( ( elem = temp[ i ] ) ) {
- matcherOut[ postMap[ i ] ] = !( matcherIn[ postMap[ i ] ] = elem );
- }
- }
- }
-
- if ( seed ) {
- if ( postFinder || preFilter ) {
- if ( postFinder ) {
-
- // Get the final matcherOut by condensing this intermediate into postFinder contexts
- temp = [];
- i = matcherOut.length;
- while ( i-- ) {
- if ( ( elem = matcherOut[ i ] ) ) {
-
- // Restore matcherIn since elem is not yet a final match
- temp.push( ( matcherIn[ i ] = elem ) );
- }
- }
- postFinder( null, ( matcherOut = [] ), temp, xml );
- }
-
- // Move matched elements from seed to results to keep them synchronized
- i = matcherOut.length;
- while ( i-- ) {
- if ( ( elem = matcherOut[ i ] ) &&
- ( temp = postFinder ? indexOf.call( seed, elem ) : preMap[ i ] ) > -1 ) {
-
- seed[ temp ] = !( results[ temp ] = elem );
- }
- }
- }
-
- // Add elements to results, through postFinder if defined
- } else {
- matcherOut = condense(
- matcherOut === results ?
- matcherOut.splice( preexisting, matcherOut.length ) :
- matcherOut
- );
- if ( postFinder ) {
- postFinder( null, results, matcherOut, xml );
- } else {
- push.apply( results, matcherOut );
- }
- }
- } );
-}
-
-function matcherFromTokens( tokens ) {
- var checkContext, matcher, j,
- len = tokens.length,
- leadingRelative = Expr.relative[ tokens[ 0 ].type ],
- implicitRelative = leadingRelative || Expr.relative[ " " ],
- i = leadingRelative ? 1 : 0,
-
- // The foundational matcher ensures that elements are reachable from top-level context(s)
- matchContext = addCombinator( function( elem ) {
- return elem === checkContext;
- }, implicitRelative, true ),
- matchAnyContext = addCombinator( function( elem ) {
- return indexOf.call( checkContext, elem ) > -1;
- }, implicitRelative, true ),
- matchers = [ function( elem, context, xml ) {
-
- // Support: IE 11+, Edge 17 - 18+
- // IE/Edge sometimes throw a "Permission denied" error when strict-comparing
- // two documents; shallow comparisons work.
- // eslint-disable-next-line eqeqeq
- var ret = ( !leadingRelative && ( xml || context != outermostContext ) ) || (
- ( checkContext = context ).nodeType ?
- matchContext( elem, context, xml ) :
- matchAnyContext( elem, context, xml ) );
-
- // Avoid hanging onto element
- // (see https://github.com/jquery/sizzle/issues/299)
- checkContext = null;
- return ret;
- } ];
-
- for ( ; i < len; i++ ) {
- if ( ( matcher = Expr.relative[ tokens[ i ].type ] ) ) {
- matchers = [ addCombinator( elementMatcher( matchers ), matcher ) ];
- } else {
- matcher = Expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches );
-
- // Return special upon seeing a positional matcher
- if ( matcher[ expando ] ) {
-
- // Find the next relative operator (if any) for proper handling
- j = ++i;
- for ( ; j < len; j++ ) {
- if ( Expr.relative[ tokens[ j ].type ] ) {
- break;
- }
- }
- return setMatcher(
- i > 1 && elementMatcher( matchers ),
- i > 1 && toSelector(
-
- // If the preceding token was a descendant combinator, insert an implicit any-element `*`
- tokens.slice( 0, i - 1 )
- .concat( { value: tokens[ i - 2 ].type === " " ? "*" : "" } )
- ).replace( rtrimCSS, "$1" ),
- matcher,
- i < j && matcherFromTokens( tokens.slice( i, j ) ),
- j < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ),
- j < len && toSelector( tokens )
- );
- }
- matchers.push( matcher );
- }
- }
-
- return elementMatcher( matchers );
-}
-
-function matcherFromGroupMatchers( elementMatchers, setMatchers ) {
- var bySet = setMatchers.length > 0,
- byElement = elementMatchers.length > 0,
- superMatcher = function( seed, context, xml, results, outermost ) {
- var elem, j, matcher,
- matchedCount = 0,
- i = "0",
- unmatched = seed && [],
- setMatched = [],
- contextBackup = outermostContext,
-
- // We must always have either seed elements or outermost context
- elems = seed || byElement && Expr.find.TAG( "*", outermost ),
-
- // Use integer dirruns iff this is the outermost matcher
- dirrunsUnique = ( dirruns += contextBackup == null ? 1 : Math.random() || 0.1 ),
- len = elems.length;
-
- if ( outermost ) {
-
- // Support: IE 11+, Edge 17 - 18+
- // IE/Edge sometimes throw a "Permission denied" error when strict-comparing
- // two documents; shallow comparisons work.
- // eslint-disable-next-line eqeqeq
- outermostContext = context == document || context || outermost;
- }
-
- // Add elements passing elementMatchers directly to results
- // Support: iOS <=7 - 9 only
- // Tolerate NodeList properties (IE: "length"; Safari: ) matching
- // elements by id. (see trac-14142)
- for ( ; i !== len && ( elem = elems[ i ] ) != null; i++ ) {
- if ( byElement && elem ) {
- j = 0;
-
- // Support: IE 11+, Edge 17 - 18+
- // IE/Edge sometimes throw a "Permission denied" error when strict-comparing
- // two documents; shallow comparisons work.
- // eslint-disable-next-line eqeqeq
- if ( !context && elem.ownerDocument != document ) {
- setDocument( elem );
- xml = !documentIsHTML;
- }
- while ( ( matcher = elementMatchers[ j++ ] ) ) {
- if ( matcher( elem, context || document, xml ) ) {
- push.call( results, elem );
- break;
- }
- }
- if ( outermost ) {
- dirruns = dirrunsUnique;
- }
- }
-
- // Track unmatched elements for set filters
- if ( bySet ) {
-
- // They will have gone through all possible matchers
- if ( ( elem = !matcher && elem ) ) {
- matchedCount--;
- }
-
- // Lengthen the array for every element, matched or not
- if ( seed ) {
- unmatched.push( elem );
- }
- }
- }
-
- // `i` is now the count of elements visited above, and adding it to `matchedCount`
- // makes the latter nonnegative.
- matchedCount += i;
-
- // Apply set filters to unmatched elements
- // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`
- // equals `i`), unless we didn't visit _any_ elements in the above loop because we have
- // no element matchers and no seed.
- // Incrementing an initially-string "0" `i` allows `i` to remain a string only in that
- // case, which will result in a "00" `matchedCount` that differs from `i` but is also
- // numerically zero.
- if ( bySet && i !== matchedCount ) {
- j = 0;
- while ( ( matcher = setMatchers[ j++ ] ) ) {
- matcher( unmatched, setMatched, context, xml );
- }
-
- if ( seed ) {
-
- // Reintegrate element matches to eliminate the need for sorting
- if ( matchedCount > 0 ) {
- while ( i-- ) {
- if ( !( unmatched[ i ] || setMatched[ i ] ) ) {
- setMatched[ i ] = pop.call( results );
- }
- }
- }
-
- // Discard index placeholder values to get only actual matches
- setMatched = condense( setMatched );
- }
-
- // Add matches to results
- push.apply( results, setMatched );
-
- // Seedless set matches succeeding multiple successful matchers stipulate sorting
- if ( outermost && !seed && setMatched.length > 0 &&
- ( matchedCount + setMatchers.length ) > 1 ) {
-
- jQuery.uniqueSort( results );
- }
- }
-
- // Override manipulation of globals by nested matchers
- if ( outermost ) {
- dirruns = dirrunsUnique;
- outermostContext = contextBackup;
- }
-
- return unmatched;
- };
-
- return bySet ?
- markFunction( superMatcher ) :
- superMatcher;
-}
-
-function compile( selector, match /* Internal Use Only */ ) {
- var i,
- setMatchers = [],
- elementMatchers = [],
- cached = compilerCache[ selector + " " ];
-
- if ( !cached ) {
-
- // Generate a function of recursive functions that can be used to check each element
- if ( !match ) {
- match = tokenize( selector );
- }
- i = match.length;
- while ( i-- ) {
- cached = matcherFromTokens( match[ i ] );
- if ( cached[ expando ] ) {
- setMatchers.push( cached );
- } else {
- elementMatchers.push( cached );
- }
- }
-
- // Cache the compiled function
- cached = compilerCache( selector,
- matcherFromGroupMatchers( elementMatchers, setMatchers ) );
-
- // Save selector and tokenization
- cached.selector = selector;
- }
- return cached;
-}
-
-/**
- * A low-level selection function that works with jQuery's compiled
- * selector functions
- * @param {String|Function} selector A selector or a pre-compiled
- * selector function built with jQuery selector compile
- * @param {Element} context
- * @param {Array} [results]
- * @param {Array} [seed] A set of elements to match against
- */
-function select( selector, context, results, seed ) {
- var i, tokens, token, type, find,
- compiled = typeof selector === "function" && selector,
- match = !seed && tokenize( ( selector = compiled.selector || selector ) );
-
- results = results || [];
-
- // Try to minimize operations if there is only one selector in the list and no seed
- // (the latter of which guarantees us context)
- if ( match.length === 1 ) {
-
- // Reduce context if the leading compound selector is an ID
- tokens = match[ 0 ] = match[ 0 ].slice( 0 );
- if ( tokens.length > 2 && ( token = tokens[ 0 ] ).type === "ID" &&
- context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[ 1 ].type ] ) {
-
- context = ( Expr.find.ID(
- token.matches[ 0 ].replace( runescape, funescape ),
- context
- ) || [] )[ 0 ];
- if ( !context ) {
- return results;
-
- // Precompiled matchers will still verify ancestry, so step up a level
- } else if ( compiled ) {
- context = context.parentNode;
- }
-
- selector = selector.slice( tokens.shift().value.length );
- }
-
- // Fetch a seed set for right-to-left matching
- i = matchExpr.needsContext.test( selector ) ? 0 : tokens.length;
- while ( i-- ) {
- token = tokens[ i ];
-
- // Abort if we hit a combinator
- if ( Expr.relative[ ( type = token.type ) ] ) {
- break;
- }
- if ( ( find = Expr.find[ type ] ) ) {
-
- // Search, expanding context for leading sibling combinators
- if ( ( seed = find(
- token.matches[ 0 ].replace( runescape, funescape ),
- rsibling.test( tokens[ 0 ].type ) &&
- testContext( context.parentNode ) || context
- ) ) ) {
-
- // If seed is empty or no tokens remain, we can return early
- tokens.splice( i, 1 );
- selector = seed.length && toSelector( tokens );
- if ( !selector ) {
- push.apply( results, seed );
- return results;
- }
-
- break;
- }
- }
- }
- }
-
- // Compile and execute a filtering function if one is not provided
- // Provide `match` to avoid retokenization if we modified the selector above
- ( compiled || compile( selector, match ) )(
- seed,
- context,
- !documentIsHTML,
- results,
- !context || rsibling.test( selector ) && testContext( context.parentNode ) || context
- );
- return results;
-}
-
-// One-time assignments
-
-// Support: Android <=4.0 - 4.1+
-// Sort stability
-support.sortStable = expando.split( "" ).sort( sortOrder ).join( "" ) === expando;
-
-// Initialize against the default document
-setDocument();
-
-// Support: Android <=4.0 - 4.1+
-// Detached nodes confoundingly follow *each other*
-support.sortDetached = assert( function( el ) {
-
- // Should return 1, but returns 4 (following)
- return el.compareDocumentPosition( document.createElement( "fieldset" ) ) & 1;
-} );
-
-jQuery.find = find;
-
-// Deprecated
-jQuery.expr[ ":" ] = jQuery.expr.pseudos;
-jQuery.unique = jQuery.uniqueSort;
-
-// These have always been private, but they used to be documented as part of
-// Sizzle so let's maintain them for now for backwards compatibility purposes.
-find.compile = compile;
-find.select = select;
-find.setDocument = setDocument;
-find.tokenize = tokenize;
-
-find.escape = jQuery.escapeSelector;
-find.getText = jQuery.text;
-find.isXML = jQuery.isXMLDoc;
-find.selectors = jQuery.expr;
-find.support = jQuery.support;
-find.uniqueSort = jQuery.uniqueSort;
-
- /* eslint-enable */
-
-} )();
-
-
-var dir = function( elem, dir, until ) {
- var matched = [],
- truncate = until !== undefined;
-
- while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) {
- if ( elem.nodeType === 1 ) {
- if ( truncate && jQuery( elem ).is( until ) ) {
- break;
- }
- matched.push( elem );
- }
- }
- return matched;
-};
-
-
-var siblings = function( n, elem ) {
- var matched = [];
-
- for ( ; n; n = n.nextSibling ) {
- if ( n.nodeType === 1 && n !== elem ) {
- matched.push( n );
- }
- }
-
- return matched;
-};
-
-
-var rneedsContext = jQuery.expr.match.needsContext;
-
-var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i );
-
-
-
-// Implement the identical functionality for filter and not
-function winnow( elements, qualifier, not ) {
- if ( isFunction( qualifier ) ) {
- return jQuery.grep( elements, function( elem, i ) {
- return !!qualifier.call( elem, i, elem ) !== not;
- } );
- }
-
- // Single element
- if ( qualifier.nodeType ) {
- return jQuery.grep( elements, function( elem ) {
- return ( elem === qualifier ) !== not;
- } );
- }
-
- // Arraylike of elements (jQuery, arguments, Array)
- if ( typeof qualifier !== "string" ) {
- return jQuery.grep( elements, function( elem ) {
- return ( indexOf.call( qualifier, elem ) > -1 ) !== not;
- } );
- }
-
- // Filtered directly for both simple and complex selectors
- return jQuery.filter( qualifier, elements, not );
-}
-
-jQuery.filter = function( expr, elems, not ) {
- var elem = elems[ 0 ];
-
- if ( not ) {
- expr = ":not(" + expr + ")";
- }
-
- if ( elems.length === 1 && elem.nodeType === 1 ) {
- return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [];
- }
-
- return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
- return elem.nodeType === 1;
- } ) );
-};
-
-jQuery.fn.extend( {
- find: function( selector ) {
- var i, ret,
- len = this.length,
- self = this;
-
- if ( typeof selector !== "string" ) {
- return this.pushStack( jQuery( selector ).filter( function() {
- for ( i = 0; i < len; i++ ) {
- if ( jQuery.contains( self[ i ], this ) ) {
- return true;
- }
- }
- } ) );
- }
-
- ret = this.pushStack( [] );
-
- for ( i = 0; i < len; i++ ) {
- jQuery.find( selector, self[ i ], ret );
- }
-
- return len > 1 ? jQuery.uniqueSort( ret ) : ret;
- },
- filter: function( selector ) {
- return this.pushStack( winnow( this, selector || [], false ) );
- },
- not: function( selector ) {
- return this.pushStack( winnow( this, selector || [], true ) );
- },
- is: function( selector ) {
- return !!winnow(
- this,
-
- // If this is a positional/relative selector, check membership in the returned set
- // so $("p:first").is("p:last") won't return true for a doc with two "p".
- typeof selector === "string" && rneedsContext.test( selector ) ?
- jQuery( selector ) :
- selector || [],
- false
- ).length;
- }
-} );
-
-
-// Initialize a jQuery object
-
-
-// A central reference to the root jQuery(document)
-var rootjQuery,
-
- // A simple way to check for HTML strings
- // Prioritize #id over to avoid XSS via location.hash (trac-9521)
- // Strict HTML recognition (trac-11290: must start with <)
- // Shortcut simple #id case for speed
- rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/,
-
- init = jQuery.fn.init = function( selector, context, root ) {
- var match, elem;
-
- // HANDLE: $(""), $(null), $(undefined), $(false)
- if ( !selector ) {
- return this;
- }
-
- // Method init() accepts an alternate rootjQuery
- // so migrate can support jQuery.sub (gh-2101)
- root = root || rootjQuery;
-
- // Handle HTML strings
- if ( typeof selector === "string" ) {
- if ( selector[ 0 ] === "<" &&
- selector[ selector.length - 1 ] === ">" &&
- selector.length >= 3 ) {
-
- // Assume that strings that start and end with <> are HTML and skip the regex check
- match = [ null, selector, null ];
-
- } else {
- match = rquickExpr.exec( selector );
- }
-
- // Match html or make sure no context is specified for #id
- if ( match && ( match[ 1 ] || !context ) ) {
-
- // HANDLE: $(html) -> $(array)
- if ( match[ 1 ] ) {
- context = context instanceof jQuery ? context[ 0 ] : context;
-
- // Option to run scripts is true for back-compat
- // Intentionally let the error be thrown if parseHTML is not present
- jQuery.merge( this, jQuery.parseHTML(
- match[ 1 ],
- context && context.nodeType ? context.ownerDocument || context : document,
- true
- ) );
-
- // HANDLE: $(html, props)
- if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) {
- for ( match in context ) {
-
- // Properties of context are called as methods if possible
- if ( isFunction( this[ match ] ) ) {
- this[ match ]( context[ match ] );
-
- // ...and otherwise set as attributes
- } else {
- this.attr( match, context[ match ] );
- }
- }
- }
-
- return this;
-
- // HANDLE: $(#id)
- } else {
- elem = document.getElementById( match[ 2 ] );
-
- if ( elem ) {
-
- // Inject the element directly into the jQuery object
- this[ 0 ] = elem;
- this.length = 1;
- }
- return this;
- }
-
- // HANDLE: $(expr, $(...))
- } else if ( !context || context.jquery ) {
- return ( context || root ).find( selector );
-
- // HANDLE: $(expr, context)
- // (which is just equivalent to: $(context).find(expr)
- } else {
- return this.constructor( context ).find( selector );
- }
-
- // HANDLE: $(DOMElement)
- } else if ( selector.nodeType ) {
- this[ 0 ] = selector;
- this.length = 1;
- return this;
-
- // HANDLE: $(function)
- // Shortcut for document ready
- } else if ( isFunction( selector ) ) {
- return root.ready !== undefined ?
- root.ready( selector ) :
-
- // Execute immediately if ready is not present
- selector( jQuery );
- }
-
- return jQuery.makeArray( selector, this );
- };
-
-// Give the init function the jQuery prototype for later instantiation
-init.prototype = jQuery.fn;
-
-// Initialize central reference
-rootjQuery = jQuery( document );
-
-
-var rparentsprev = /^(?:parents|prev(?:Until|All))/,
-
- // Methods guaranteed to produce a unique set when starting from a unique set
- guaranteedUnique = {
- children: true,
- contents: true,
- next: true,
- prev: true
- };
-
-jQuery.fn.extend( {
- has: function( target ) {
- var targets = jQuery( target, this ),
- l = targets.length;
-
- return this.filter( function() {
- var i = 0;
- for ( ; i < l; i++ ) {
- if ( jQuery.contains( this, targets[ i ] ) ) {
- return true;
- }
- }
- } );
- },
-
- closest: function( selectors, context ) {
- var cur,
- i = 0,
- l = this.length,
- matched = [],
- targets = typeof selectors !== "string" && jQuery( selectors );
-
- // Positional selectors never match, since there's no _selection_ context
- if ( !rneedsContext.test( selectors ) ) {
- for ( ; i < l; i++ ) {
- for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) {
-
- // Always skip document fragments
- if ( cur.nodeType < 11 && ( targets ?
- targets.index( cur ) > -1 :
-
- // Don't pass non-elements to jQuery#find
- cur.nodeType === 1 &&
- jQuery.find.matchesSelector( cur, selectors ) ) ) {
-
- matched.push( cur );
- break;
- }
- }
- }
- }
-
- return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );
- },
-
- // Determine the position of an element within the set
- index: function( elem ) {
-
- // No argument, return index in parent
- if ( !elem ) {
- return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;
- }
-
- // Index in selector
- if ( typeof elem === "string" ) {
- return indexOf.call( jQuery( elem ), this[ 0 ] );
- }
-
- // Locate the position of the desired element
- return indexOf.call( this,
-
- // If it receives a jQuery object, the first element is used
- elem.jquery ? elem[ 0 ] : elem
- );
- },
-
- add: function( selector, context ) {
- return this.pushStack(
- jQuery.uniqueSort(
- jQuery.merge( this.get(), jQuery( selector, context ) )
- )
- );
- },
-
- addBack: function( selector ) {
- return this.add( selector == null ?
- this.prevObject : this.prevObject.filter( selector )
- );
- }
-} );
-
-function sibling( cur, dir ) {
- while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {}
- return cur;
-}
-
-jQuery.each( {
- parent: function( elem ) {
- var parent = elem.parentNode;
- return parent && parent.nodeType !== 11 ? parent : null;
- },
- parents: function( elem ) {
- return dir( elem, "parentNode" );
- },
- parentsUntil: function( elem, _i, until ) {
- return dir( elem, "parentNode", until );
- },
- next: function( elem ) {
- return sibling( elem, "nextSibling" );
- },
- prev: function( elem ) {
- return sibling( elem, "previousSibling" );
- },
- nextAll: function( elem ) {
- return dir( elem, "nextSibling" );
- },
- prevAll: function( elem ) {
- return dir( elem, "previousSibling" );
- },
- nextUntil: function( elem, _i, until ) {
- return dir( elem, "nextSibling", until );
- },
- prevUntil: function( elem, _i, until ) {
- return dir( elem, "previousSibling", until );
- },
- siblings: function( elem ) {
- return siblings( ( elem.parentNode || {} ).firstChild, elem );
- },
- children: function( elem ) {
- return siblings( elem.firstChild );
- },
- contents: function( elem ) {
- if ( elem.contentDocument != null &&
-
- // Support: IE 11+
- // elements with no `data` attribute has an object
- // `contentDocument` with a `null` prototype.
- getProto( elem.contentDocument ) ) {
-
- return elem.contentDocument;
- }
-
- // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only
- // Treat the template element as a regular one in browsers that
- // don't support it.
- if ( nodeName( elem, "template" ) ) {
- elem = elem.content || elem;
- }
-
- return jQuery.merge( [], elem.childNodes );
- }
-}, function( name, fn ) {
- jQuery.fn[ name ] = function( until, selector ) {
- var matched = jQuery.map( this, fn, until );
-
- if ( name.slice( -5 ) !== "Until" ) {
- selector = until;
- }
-
- if ( selector && typeof selector === "string" ) {
- matched = jQuery.filter( selector, matched );
- }
-
- if ( this.length > 1 ) {
-
- // Remove duplicates
- if ( !guaranteedUnique[ name ] ) {
- jQuery.uniqueSort( matched );
- }
-
- // Reverse order for parents* and prev-derivatives
- if ( rparentsprev.test( name ) ) {
- matched.reverse();
- }
- }
-
- return this.pushStack( matched );
- };
-} );
-var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g );
-
-
-
-// Convert String-formatted options into Object-formatted ones
-function createOptions( options ) {
- var object = {};
- jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) {
- object[ flag ] = true;
- } );
- return object;
-}
-
-/*
- * Create a callback list using the following parameters:
- *
- * options: an optional list of space-separated options that will change how
- * the callback list behaves or a more traditional option object
- *
- * By default a callback list will act like an event callback list and can be
- * "fired" multiple times.
- *
- * Possible options:
- *
- * once: will ensure the callback list can only be fired once (like a Deferred)
- *
- * memory: will keep track of previous values and will call any callback added
- * after the list has been fired right away with the latest "memorized"
- * values (like a Deferred)
- *
- * unique: will ensure a callback can only be added once (no duplicate in the list)
- *
- * stopOnFalse: interrupt callings when a callback returns false
- *
- */
-jQuery.Callbacks = function( options ) {
-
- // Convert options from String-formatted to Object-formatted if needed
- // (we check in cache first)
- options = typeof options === "string" ?
- createOptions( options ) :
- jQuery.extend( {}, options );
-
- var // Flag to know if list is currently firing
- firing,
-
- // Last fire value for non-forgettable lists
- memory,
-
- // Flag to know if list was already fired
- fired,
-
- // Flag to prevent firing
- locked,
-
- // Actual callback list
- list = [],
-
- // Queue of execution data for repeatable lists
- queue = [],
-
- // Index of currently firing callback (modified by add/remove as needed)
- firingIndex = -1,
-
- // Fire callbacks
- fire = function() {
-
- // Enforce single-firing
- locked = locked || options.once;
-
- // Execute callbacks for all pending executions,
- // respecting firingIndex overrides and runtime changes
- fired = firing = true;
- for ( ; queue.length; firingIndex = -1 ) {
- memory = queue.shift();
- while ( ++firingIndex < list.length ) {
-
- // Run callback and check for early termination
- if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false &&
- options.stopOnFalse ) {
-
- // Jump to end and forget the data so .add doesn't re-fire
- firingIndex = list.length;
- memory = false;
- }
- }
- }
-
- // Forget the data if we're done with it
- if ( !options.memory ) {
- memory = false;
- }
-
- firing = false;
-
- // Clean up if we're done firing for good
- if ( locked ) {
-
- // Keep an empty list if we have data for future add calls
- if ( memory ) {
- list = [];
-
- // Otherwise, this object is spent
- } else {
- list = "";
- }
- }
- },
-
- // Actual Callbacks object
- self = {
-
- // Add a callback or a collection of callbacks to the list
- add: function() {
- if ( list ) {
-
- // If we have memory from a past run, we should fire after adding
- if ( memory && !firing ) {
- firingIndex = list.length - 1;
- queue.push( memory );
- }
-
- ( function add( args ) {
- jQuery.each( args, function( _, arg ) {
- if ( isFunction( arg ) ) {
- if ( !options.unique || !self.has( arg ) ) {
- list.push( arg );
- }
- } else if ( arg && arg.length && toType( arg ) !== "string" ) {
-
- // Inspect recursively
- add( arg );
- }
- } );
- } )( arguments );
-
- if ( memory && !firing ) {
- fire();
- }
- }
- return this;
- },
-
- // Remove a callback from the list
- remove: function() {
- jQuery.each( arguments, function( _, arg ) {
- var index;
- while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
- list.splice( index, 1 );
-
- // Handle firing indexes
- if ( index <= firingIndex ) {
- firingIndex--;
- }
- }
- } );
- return this;
- },
-
- // Check if a given callback is in the list.
- // If no argument is given, return whether or not list has callbacks attached.
- has: function( fn ) {
- return fn ?
- jQuery.inArray( fn, list ) > -1 :
- list.length > 0;
- },
-
- // Remove all callbacks from the list
- empty: function() {
- if ( list ) {
- list = [];
- }
- return this;
- },
-
- // Disable .fire and .add
- // Abort any current/pending executions
- // Clear all callbacks and values
- disable: function() {
- locked = queue = [];
- list = memory = "";
- return this;
- },
- disabled: function() {
- return !list;
- },
-
- // Disable .fire
- // Also disable .add unless we have memory (since it would have no effect)
- // Abort any pending executions
- lock: function() {
- locked = queue = [];
- if ( !memory && !firing ) {
- list = memory = "";
- }
- return this;
- },
- locked: function() {
- return !!locked;
- },
-
- // Call all callbacks with the given context and arguments
- fireWith: function( context, args ) {
- if ( !locked ) {
- args = args || [];
- args = [ context, args.slice ? args.slice() : args ];
- queue.push( args );
- if ( !firing ) {
- fire();
- }
- }
- return this;
- },
-
- // Call all the callbacks with the given arguments
- fire: function() {
- self.fireWith( this, arguments );
- return this;
- },
-
- // To know if the callbacks have already been called at least once
- fired: function() {
- return !!fired;
- }
- };
-
- return self;
-};
-
-
-function Identity( v ) {
- return v;
-}
-function Thrower( ex ) {
- throw ex;
-}
-
-function adoptValue( value, resolve, reject, noValue ) {
- var method;
-
- try {
-
- // Check for promise aspect first to privilege synchronous behavior
- if ( value && isFunction( ( method = value.promise ) ) ) {
- method.call( value ).done( resolve ).fail( reject );
-
- // Other thenables
- } else if ( value && isFunction( ( method = value.then ) ) ) {
- method.call( value, resolve, reject );
-
- // Other non-thenables
- } else {
-
- // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:
- // * false: [ value ].slice( 0 ) => resolve( value )
- // * true: [ value ].slice( 1 ) => resolve()
- resolve.apply( undefined, [ value ].slice( noValue ) );
- }
-
- // For Promises/A+, convert exceptions into rejections
- // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in
- // Deferred#then to conditionally suppress rejection.
- } catch ( value ) {
-
- // Support: Android 4.0 only
- // Strict mode functions invoked without .call/.apply get global-object context
- reject.apply( undefined, [ value ] );
- }
-}
-
-jQuery.extend( {
-
- Deferred: function( func ) {
- var tuples = [
-
- // action, add listener, callbacks,
- // ... .then handlers, argument index, [final state]
- [ "notify", "progress", jQuery.Callbacks( "memory" ),
- jQuery.Callbacks( "memory" ), 2 ],
- [ "resolve", "done", jQuery.Callbacks( "once memory" ),
- jQuery.Callbacks( "once memory" ), 0, "resolved" ],
- [ "reject", "fail", jQuery.Callbacks( "once memory" ),
- jQuery.Callbacks( "once memory" ), 1, "rejected" ]
- ],
- state = "pending",
- promise = {
- state: function() {
- return state;
- },
- always: function() {
- deferred.done( arguments ).fail( arguments );
- return this;
- },
- "catch": function( fn ) {
- return promise.then( null, fn );
- },
-
- // Keep pipe for back-compat
- pipe: function( /* fnDone, fnFail, fnProgress */ ) {
- var fns = arguments;
-
- return jQuery.Deferred( function( newDefer ) {
- jQuery.each( tuples, function( _i, tuple ) {
-
- // Map tuples (progress, done, fail) to arguments (done, fail, progress)
- var fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ];
-
- // deferred.progress(function() { bind to newDefer or newDefer.notify })
- // deferred.done(function() { bind to newDefer or newDefer.resolve })
- // deferred.fail(function() { bind to newDefer or newDefer.reject })
- deferred[ tuple[ 1 ] ]( function() {
- var returned = fn && fn.apply( this, arguments );
- if ( returned && isFunction( returned.promise ) ) {
- returned.promise()
- .progress( newDefer.notify )
- .done( newDefer.resolve )
- .fail( newDefer.reject );
- } else {
- newDefer[ tuple[ 0 ] + "With" ](
- this,
- fn ? [ returned ] : arguments
- );
- }
- } );
- } );
- fns = null;
- } ).promise();
- },
- then: function( onFulfilled, onRejected, onProgress ) {
- var maxDepth = 0;
- function resolve( depth, deferred, handler, special ) {
- return function() {
- var that = this,
- args = arguments,
- mightThrow = function() {
- var returned, then;
-
- // Support: Promises/A+ section 2.3.3.3.3
- // https://promisesaplus.com/#point-59
- // Ignore double-resolution attempts
- if ( depth < maxDepth ) {
- return;
- }
-
- returned = handler.apply( that, args );
-
- // Support: Promises/A+ section 2.3.1
- // https://promisesaplus.com/#point-48
- if ( returned === deferred.promise() ) {
- throw new TypeError( "Thenable self-resolution" );
- }
-
- // Support: Promises/A+ sections 2.3.3.1, 3.5
- // https://promisesaplus.com/#point-54
- // https://promisesaplus.com/#point-75
- // Retrieve `then` only once
- then = returned &&
-
- // Support: Promises/A+ section 2.3.4
- // https://promisesaplus.com/#point-64
- // Only check objects and functions for thenability
- ( typeof returned === "object" ||
- typeof returned === "function" ) &&
- returned.then;
-
- // Handle a returned thenable
- if ( isFunction( then ) ) {
-
- // Special processors (notify) just wait for resolution
- if ( special ) {
- then.call(
- returned,
- resolve( maxDepth, deferred, Identity, special ),
- resolve( maxDepth, deferred, Thrower, special )
- );
-
- // Normal processors (resolve) also hook into progress
- } else {
-
- // ...and disregard older resolution values
- maxDepth++;
-
- then.call(
- returned,
- resolve( maxDepth, deferred, Identity, special ),
- resolve( maxDepth, deferred, Thrower, special ),
- resolve( maxDepth, deferred, Identity,
- deferred.notifyWith )
- );
- }
-
- // Handle all other returned values
- } else {
-
- // Only substitute handlers pass on context
- // and multiple values (non-spec behavior)
- if ( handler !== Identity ) {
- that = undefined;
- args = [ returned ];
- }
-
- // Process the value(s)
- // Default process is resolve
- ( special || deferred.resolveWith )( that, args );
- }
- },
-
- // Only normal processors (resolve) catch and reject exceptions
- process = special ?
- mightThrow :
- function() {
- try {
- mightThrow();
- } catch ( e ) {
-
- if ( jQuery.Deferred.exceptionHook ) {
- jQuery.Deferred.exceptionHook( e,
- process.error );
- }
-
- // Support: Promises/A+ section 2.3.3.3.4.1
- // https://promisesaplus.com/#point-61
- // Ignore post-resolution exceptions
- if ( depth + 1 >= maxDepth ) {
-
- // Only substitute handlers pass on context
- // and multiple values (non-spec behavior)
- if ( handler !== Thrower ) {
- that = undefined;
- args = [ e ];
- }
-
- deferred.rejectWith( that, args );
- }
- }
- };
-
- // Support: Promises/A+ section 2.3.3.3.1
- // https://promisesaplus.com/#point-57
- // Re-resolve promises immediately to dodge false rejection from
- // subsequent errors
- if ( depth ) {
- process();
- } else {
-
- // Call an optional hook to record the error, in case of exception
- // since it's otherwise lost when execution goes async
- if ( jQuery.Deferred.getErrorHook ) {
- process.error = jQuery.Deferred.getErrorHook();
-
- // The deprecated alias of the above. While the name suggests
- // returning the stack, not an error instance, jQuery just passes
- // it directly to `console.warn` so both will work; an instance
- // just better cooperates with source maps.
- } else if ( jQuery.Deferred.getStackHook ) {
- process.error = jQuery.Deferred.getStackHook();
- }
- window.setTimeout( process );
- }
- };
- }
-
- return jQuery.Deferred( function( newDefer ) {
-
- // progress_handlers.add( ... )
- tuples[ 0 ][ 3 ].add(
- resolve(
- 0,
- newDefer,
- isFunction( onProgress ) ?
- onProgress :
- Identity,
- newDefer.notifyWith
- )
- );
-
- // fulfilled_handlers.add( ... )
- tuples[ 1 ][ 3 ].add(
- resolve(
- 0,
- newDefer,
- isFunction( onFulfilled ) ?
- onFulfilled :
- Identity
- )
- );
-
- // rejected_handlers.add( ... )
- tuples[ 2 ][ 3 ].add(
- resolve(
- 0,
- newDefer,
- isFunction( onRejected ) ?
- onRejected :
- Thrower
- )
- );
- } ).promise();
- },
-
- // Get a promise for this deferred
- // If obj is provided, the promise aspect is added to the object
- promise: function( obj ) {
- return obj != null ? jQuery.extend( obj, promise ) : promise;
- }
- },
- deferred = {};
-
- // Add list-specific methods
- jQuery.each( tuples, function( i, tuple ) {
- var list = tuple[ 2 ],
- stateString = tuple[ 5 ];
-
- // promise.progress = list.add
- // promise.done = list.add
- // promise.fail = list.add
- promise[ tuple[ 1 ] ] = list.add;
-
- // Handle state
- if ( stateString ) {
- list.add(
- function() {
-
- // state = "resolved" (i.e., fulfilled)
- // state = "rejected"
- state = stateString;
- },
-
- // rejected_callbacks.disable
- // fulfilled_callbacks.disable
- tuples[ 3 - i ][ 2 ].disable,
-
- // rejected_handlers.disable
- // fulfilled_handlers.disable
- tuples[ 3 - i ][ 3 ].disable,
-
- // progress_callbacks.lock
- tuples[ 0 ][ 2 ].lock,
-
- // progress_handlers.lock
- tuples[ 0 ][ 3 ].lock
- );
- }
-
- // progress_handlers.fire
- // fulfilled_handlers.fire
- // rejected_handlers.fire
- list.add( tuple[ 3 ].fire );
-
- // deferred.notify = function() { deferred.notifyWith(...) }
- // deferred.resolve = function() { deferred.resolveWith(...) }
- // deferred.reject = function() { deferred.rejectWith(...) }
- deferred[ tuple[ 0 ] ] = function() {
- deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments );
- return this;
- };
-
- // deferred.notifyWith = list.fireWith
- // deferred.resolveWith = list.fireWith
- // deferred.rejectWith = list.fireWith
- deferred[ tuple[ 0 ] + "With" ] = list.fireWith;
- } );
-
- // Make the deferred a promise
- promise.promise( deferred );
-
- // Call given func if any
- if ( func ) {
- func.call( deferred, deferred );
- }
-
- // All done!
- return deferred;
- },
-
- // Deferred helper
- when: function( singleValue ) {
- var
-
- // count of uncompleted subordinates
- remaining = arguments.length,
-
- // count of unprocessed arguments
- i = remaining,
-
- // subordinate fulfillment data
- resolveContexts = Array( i ),
- resolveValues = slice.call( arguments ),
-
- // the primary Deferred
- primary = jQuery.Deferred(),
-
- // subordinate callback factory
- updateFunc = function( i ) {
- return function( value ) {
- resolveContexts[ i ] = this;
- resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;
- if ( !( --remaining ) ) {
- primary.resolveWith( resolveContexts, resolveValues );
- }
- };
- };
-
- // Single- and empty arguments are adopted like Promise.resolve
- if ( remaining <= 1 ) {
- adoptValue( singleValue, primary.done( updateFunc( i ) ).resolve, primary.reject,
- !remaining );
-
- // Use .then() to unwrap secondary thenables (cf. gh-3000)
- if ( primary.state() === "pending" ||
- isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) {
-
- return primary.then();
- }
- }
-
- // Multiple arguments are aggregated like Promise.all array elements
- while ( i-- ) {
- adoptValue( resolveValues[ i ], updateFunc( i ), primary.reject );
- }
-
- return primary.promise();
- }
-} );
-
-
-// These usually indicate a programmer mistake during development,
-// warn about them ASAP rather than swallowing them by default.
-var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;
-
-// If `jQuery.Deferred.getErrorHook` is defined, `asyncError` is an error
-// captured before the async barrier to get the original error cause
-// which may otherwise be hidden.
-jQuery.Deferred.exceptionHook = function( error, asyncError ) {
-
- // Support: IE 8 - 9 only
- // Console exists when dev tools are open, which can happen at any time
- if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) {
- window.console.warn( "jQuery.Deferred exception: " + error.message,
- error.stack, asyncError );
- }
-};
-
-
-
-
-jQuery.readyException = function( error ) {
- window.setTimeout( function() {
- throw error;
- } );
-};
-
-
-
-
-// The deferred used on DOM ready
-var readyList = jQuery.Deferred();
-
-jQuery.fn.ready = function( fn ) {
-
- readyList
- .then( fn )
-
- // Wrap jQuery.readyException in a function so that the lookup
- // happens at the time of error handling instead of callback
- // registration.
- .catch( function( error ) {
- jQuery.readyException( error );
- } );
-
- return this;
-};
-
-jQuery.extend( {
-
- // Is the DOM ready to be used? Set to true once it occurs.
- isReady: false,
-
- // A counter to track how many items to wait for before
- // the ready event fires. See trac-6781
- readyWait: 1,
-
- // Handle when the DOM is ready
- ready: function( wait ) {
-
- // Abort if there are pending holds or we're already ready
- if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
- return;
- }
-
- // Remember that the DOM is ready
- jQuery.isReady = true;
-
- // If a normal DOM Ready event fired, decrement, and wait if need be
- if ( wait !== true && --jQuery.readyWait > 0 ) {
- return;
- }
-
- // If there are functions bound, to execute
- readyList.resolveWith( document, [ jQuery ] );
- }
-} );
-
-jQuery.ready.then = readyList.then;
-
-// The ready event handler and self cleanup method
-function completed() {
- document.removeEventListener( "DOMContentLoaded", completed );
- window.removeEventListener( "load", completed );
- jQuery.ready();
-}
-
-// Catch cases where $(document).ready() is called
-// after the browser event has already occurred.
-// Support: IE <=9 - 10 only
-// Older IE sometimes signals "interactive" too soon
-if ( document.readyState === "complete" ||
- ( document.readyState !== "loading" && !document.documentElement.doScroll ) ) {
-
- // Handle it asynchronously to allow scripts the opportunity to delay ready
- window.setTimeout( jQuery.ready );
-
-} else {
-
- // Use the handy event callback
- document.addEventListener( "DOMContentLoaded", completed );
-
- // A fallback to window.onload, that will always work
- window.addEventListener( "load", completed );
-}
-
-
-
-
-// Multifunctional method to get and set values of a collection
-// The value/s can optionally be executed if it's a function
-var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
- var i = 0,
- len = elems.length,
- bulk = key == null;
-
- // Sets many values
- if ( toType( key ) === "object" ) {
- chainable = true;
- for ( i in key ) {
- access( elems, fn, i, key[ i ], true, emptyGet, raw );
- }
-
- // Sets one value
- } else if ( value !== undefined ) {
- chainable = true;
-
- if ( !isFunction( value ) ) {
- raw = true;
- }
-
- if ( bulk ) {
-
- // Bulk operations run against the entire set
- if ( raw ) {
- fn.call( elems, value );
- fn = null;
-
- // ...except when executing function values
- } else {
- bulk = fn;
- fn = function( elem, _key, value ) {
- return bulk.call( jQuery( elem ), value );
- };
- }
- }
-
- if ( fn ) {
- for ( ; i < len; i++ ) {
- fn(
- elems[ i ], key, raw ?
- value :
- value.call( elems[ i ], i, fn( elems[ i ], key ) )
- );
- }
- }
- }
-
- if ( chainable ) {
- return elems;
- }
-
- // Gets
- if ( bulk ) {
- return fn.call( elems );
- }
-
- return len ? fn( elems[ 0 ], key ) : emptyGet;
-};
-
-
-// Matches dashed string for camelizing
-var rmsPrefix = /^-ms-/,
- rdashAlpha = /-([a-z])/g;
-
-// Used by camelCase as callback to replace()
-function fcamelCase( _all, letter ) {
- return letter.toUpperCase();
-}
-
-// Convert dashed to camelCase; used by the css and data modules
-// Support: IE <=9 - 11, Edge 12 - 15
-// Microsoft forgot to hump their vendor prefix (trac-9572)
-function camelCase( string ) {
- return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
-}
-var acceptData = function( owner ) {
-
- // Accepts only:
- // - Node
- // - Node.ELEMENT_NODE
- // - Node.DOCUMENT_NODE
- // - Object
- // - Any
- return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType );
-};
-
-
-
-
-function Data() {
- this.expando = jQuery.expando + Data.uid++;
-}
-
-Data.uid = 1;
-
-Data.prototype = {
-
- cache: function( owner ) {
-
- // Check if the owner object already has a cache
- var value = owner[ this.expando ];
-
- // If not, create one
- if ( !value ) {
- value = {};
-
- // We can accept data for non-element nodes in modern browsers,
- // but we should not, see trac-8335.
- // Always return an empty object.
- if ( acceptData( owner ) ) {
-
- // If it is a node unlikely to be stringify-ed or looped over
- // use plain assignment
- if ( owner.nodeType ) {
- owner[ this.expando ] = value;
-
- // Otherwise secure it in a non-enumerable property
- // configurable must be true to allow the property to be
- // deleted when data is removed
- } else {
- Object.defineProperty( owner, this.expando, {
- value: value,
- configurable: true
- } );
- }
- }
- }
-
- return value;
- },
- set: function( owner, data, value ) {
- var prop,
- cache = this.cache( owner );
-
- // Handle: [ owner, key, value ] args
- // Always use camelCase key (gh-2257)
- if ( typeof data === "string" ) {
- cache[ camelCase( data ) ] = value;
-
- // Handle: [ owner, { properties } ] args
- } else {
-
- // Copy the properties one-by-one to the cache object
- for ( prop in data ) {
- cache[ camelCase( prop ) ] = data[ prop ];
- }
- }
- return cache;
- },
- get: function( owner, key ) {
- return key === undefined ?
- this.cache( owner ) :
-
- // Always use camelCase key (gh-2257)
- owner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ];
- },
- access: function( owner, key, value ) {
-
- // In cases where either:
- //
- // 1. No key was specified
- // 2. A string key was specified, but no value provided
- //
- // Take the "read" path and allow the get method to determine
- // which value to return, respectively either:
- //
- // 1. The entire cache object
- // 2. The data stored at the key
- //
- if ( key === undefined ||
- ( ( key && typeof key === "string" ) && value === undefined ) ) {
-
- return this.get( owner, key );
- }
-
- // When the key is not a string, or both a key and value
- // are specified, set or extend (existing objects) with either:
- //
- // 1. An object of properties
- // 2. A key and value
- //
- this.set( owner, key, value );
-
- // Since the "set" path can have two possible entry points
- // return the expected data based on which path was taken[*]
- return value !== undefined ? value : key;
- },
- remove: function( owner, key ) {
- var i,
- cache = owner[ this.expando ];
-
- if ( cache === undefined ) {
- return;
- }
-
- if ( key !== undefined ) {
-
- // Support array or space separated string of keys
- if ( Array.isArray( key ) ) {
-
- // If key is an array of keys...
- // We always set camelCase keys, so remove that.
- key = key.map( camelCase );
- } else {
- key = camelCase( key );
-
- // If a key with the spaces exists, use it.
- // Otherwise, create an array by matching non-whitespace
- key = key in cache ?
- [ key ] :
- ( key.match( rnothtmlwhite ) || [] );
- }
-
- i = key.length;
-
- while ( i-- ) {
- delete cache[ key[ i ] ];
- }
- }
-
- // Remove the expando if there's no more data
- if ( key === undefined || jQuery.isEmptyObject( cache ) ) {
-
- // Support: Chrome <=35 - 45
- // Webkit & Blink performance suffers when deleting properties
- // from DOM nodes, so set to undefined instead
- // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)
- if ( owner.nodeType ) {
- owner[ this.expando ] = undefined;
- } else {
- delete owner[ this.expando ];
- }
- }
- },
- hasData: function( owner ) {
- var cache = owner[ this.expando ];
- return cache !== undefined && !jQuery.isEmptyObject( cache );
- }
-};
-var dataPriv = new Data();
-
-var dataUser = new Data();
-
-
-
-// Implementation Summary
-//
-// 1. Enforce API surface and semantic compatibility with 1.9.x branch
-// 2. Improve the module's maintainability by reducing the storage
-// paths to a single mechanism.
-// 3. Use the same single mechanism to support "private" and "user" data.
-// 4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData)
-// 5. Avoid exposing implementation details on user objects (eg. expando properties)
-// 6. Provide a clear path for implementation upgrade to WeakMap in 2014
-
-var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
- rmultiDash = /[A-Z]/g;
-
-function getData( data ) {
- if ( data === "true" ) {
- return true;
- }
-
- if ( data === "false" ) {
- return false;
- }
-
- if ( data === "null" ) {
- return null;
- }
-
- // Only convert to a number if it doesn't change the string
- if ( data === +data + "" ) {
- return +data;
- }
-
- if ( rbrace.test( data ) ) {
- return JSON.parse( data );
- }
-
- return data;
-}
-
-function dataAttr( elem, key, data ) {
- var name;
-
- // If nothing was found internally, try to fetch any
- // data from the HTML5 data-* attribute
- if ( data === undefined && elem.nodeType === 1 ) {
- name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase();
- data = elem.getAttribute( name );
-
- if ( typeof data === "string" ) {
- try {
- data = getData( data );
- } catch ( e ) {}
-
- // Make sure we set the data so it isn't changed later
- dataUser.set( elem, key, data );
- } else {
- data = undefined;
- }
- }
- return data;
-}
-
-jQuery.extend( {
- hasData: function( elem ) {
- return dataUser.hasData( elem ) || dataPriv.hasData( elem );
- },
-
- data: function( elem, name, data ) {
- return dataUser.access( elem, name, data );
- },
-
- removeData: function( elem, name ) {
- dataUser.remove( elem, name );
- },
-
- // TODO: Now that all calls to _data and _removeData have been replaced
- // with direct calls to dataPriv methods, these can be deprecated.
- _data: function( elem, name, data ) {
- return dataPriv.access( elem, name, data );
- },
-
- _removeData: function( elem, name ) {
- dataPriv.remove( elem, name );
- }
-} );
-
-jQuery.fn.extend( {
- data: function( key, value ) {
- var i, name, data,
- elem = this[ 0 ],
- attrs = elem && elem.attributes;
-
- // Gets all values
- if ( key === undefined ) {
- if ( this.length ) {
- data = dataUser.get( elem );
-
- if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) {
- i = attrs.length;
- while ( i-- ) {
-
- // Support: IE 11 only
- // The attrs elements can be null (trac-14894)
- if ( attrs[ i ] ) {
- name = attrs[ i ].name;
- if ( name.indexOf( "data-" ) === 0 ) {
- name = camelCase( name.slice( 5 ) );
- dataAttr( elem, name, data[ name ] );
- }
- }
- }
- dataPriv.set( elem, "hasDataAttrs", true );
- }
- }
-
- return data;
- }
-
- // Sets multiple values
- if ( typeof key === "object" ) {
- return this.each( function() {
- dataUser.set( this, key );
- } );
- }
-
- return access( this, function( value ) {
- var data;
-
- // The calling jQuery object (element matches) is not empty
- // (and therefore has an element appears at this[ 0 ]) and the
- // `value` parameter was not undefined. An empty jQuery object
- // will result in `undefined` for elem = this[ 0 ] which will
- // throw an exception if an attempt to read a data cache is made.
- if ( elem && value === undefined ) {
-
- // Attempt to get data from the cache
- // The key will always be camelCased in Data
- data = dataUser.get( elem, key );
- if ( data !== undefined ) {
- return data;
- }
-
- // Attempt to "discover" the data in
- // HTML5 custom data-* attrs
- data = dataAttr( elem, key );
- if ( data !== undefined ) {
- return data;
- }
-
- // We tried really hard, but the data doesn't exist.
- return;
- }
-
- // Set the data...
- this.each( function() {
-
- // We always store the camelCased key
- dataUser.set( this, key, value );
- } );
- }, null, value, arguments.length > 1, null, true );
- },
-
- removeData: function( key ) {
- return this.each( function() {
- dataUser.remove( this, key );
- } );
- }
-} );
-
-
-jQuery.extend( {
- queue: function( elem, type, data ) {
- var queue;
-
- if ( elem ) {
- type = ( type || "fx" ) + "queue";
- queue = dataPriv.get( elem, type );
-
- // Speed up dequeue by getting out quickly if this is just a lookup
- if ( data ) {
- if ( !queue || Array.isArray( data ) ) {
- queue = dataPriv.access( elem, type, jQuery.makeArray( data ) );
- } else {
- queue.push( data );
- }
- }
- return queue || [];
- }
- },
-
- dequeue: function( elem, type ) {
- type = type || "fx";
-
- var queue = jQuery.queue( elem, type ),
- startLength = queue.length,
- fn = queue.shift(),
- hooks = jQuery._queueHooks( elem, type ),
- next = function() {
- jQuery.dequeue( elem, type );
- };
-
- // If the fx queue is dequeued, always remove the progress sentinel
- if ( fn === "inprogress" ) {
- fn = queue.shift();
- startLength--;
- }
-
- if ( fn ) {
-
- // Add a progress sentinel to prevent the fx queue from being
- // automatically dequeued
- if ( type === "fx" ) {
- queue.unshift( "inprogress" );
- }
-
- // Clear up the last queue stop function
- delete hooks.stop;
- fn.call( elem, next, hooks );
- }
-
- if ( !startLength && hooks ) {
- hooks.empty.fire();
- }
- },
-
- // Not public - generate a queueHooks object, or return the current one
- _queueHooks: function( elem, type ) {
- var key = type + "queueHooks";
- return dataPriv.get( elem, key ) || dataPriv.access( elem, key, {
- empty: jQuery.Callbacks( "once memory" ).add( function() {
- dataPriv.remove( elem, [ type + "queue", key ] );
- } )
- } );
- }
-} );
-
-jQuery.fn.extend( {
- queue: function( type, data ) {
- var setter = 2;
-
- if ( typeof type !== "string" ) {
- data = type;
- type = "fx";
- setter--;
- }
-
- if ( arguments.length < setter ) {
- return jQuery.queue( this[ 0 ], type );
- }
-
- return data === undefined ?
- this :
- this.each( function() {
- var queue = jQuery.queue( this, type, data );
-
- // Ensure a hooks for this queue
- jQuery._queueHooks( this, type );
-
- if ( type === "fx" && queue[ 0 ] !== "inprogress" ) {
- jQuery.dequeue( this, type );
- }
- } );
- },
- dequeue: function( type ) {
- return this.each( function() {
- jQuery.dequeue( this, type );
- } );
- },
- clearQueue: function( type ) {
- return this.queue( type || "fx", [] );
- },
-
- // Get a promise resolved when queues of a certain type
- // are emptied (fx is the type by default)
- promise: function( type, obj ) {
- var tmp,
- count = 1,
- defer = jQuery.Deferred(),
- elements = this,
- i = this.length,
- resolve = function() {
- if ( !( --count ) ) {
- defer.resolveWith( elements, [ elements ] );
- }
- };
-
- if ( typeof type !== "string" ) {
- obj = type;
- type = undefined;
- }
- type = type || "fx";
-
- while ( i-- ) {
- tmp = dataPriv.get( elements[ i ], type + "queueHooks" );
- if ( tmp && tmp.empty ) {
- count++;
- tmp.empty.add( resolve );
- }
- }
- resolve();
- return defer.promise( obj );
- }
-} );
-var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source;
-
-var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" );
-
-
-var cssExpand = [ "Top", "Right", "Bottom", "Left" ];
-
-var documentElement = document.documentElement;
-
-
-
- var isAttached = function( elem ) {
- return jQuery.contains( elem.ownerDocument, elem );
- },
- composed = { composed: true };
-
- // Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only
- // Check attachment across shadow DOM boundaries when possible (gh-3504)
- // Support: iOS 10.0-10.2 only
- // Early iOS 10 versions support `attachShadow` but not `getRootNode`,
- // leading to errors. We need to check for `getRootNode`.
- if ( documentElement.getRootNode ) {
- isAttached = function( elem ) {
- return jQuery.contains( elem.ownerDocument, elem ) ||
- elem.getRootNode( composed ) === elem.ownerDocument;
- };
- }
-var isHiddenWithinTree = function( elem, el ) {
-
- // isHiddenWithinTree might be called from jQuery#filter function;
- // in that case, element will be second argument
- elem = el || elem;
-
- // Inline style trumps all
- return elem.style.display === "none" ||
- elem.style.display === "" &&
-
- // Otherwise, check computed style
- // Support: Firefox <=43 - 45
- // Disconnected elements can have computed display: none, so first confirm that elem is
- // in the document.
- isAttached( elem ) &&
-
- jQuery.css( elem, "display" ) === "none";
- };
-
-
-
-function adjustCSS( elem, prop, valueParts, tween ) {
- var adjusted, scale,
- maxIterations = 20,
- currentValue = tween ?
- function() {
- return tween.cur();
- } :
- function() {
- return jQuery.css( elem, prop, "" );
- },
- initial = currentValue(),
- unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ),
-
- // Starting value computation is required for potential unit mismatches
- initialInUnit = elem.nodeType &&
- ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) &&
- rcssNum.exec( jQuery.css( elem, prop ) );
-
- if ( initialInUnit && initialInUnit[ 3 ] !== unit ) {
-
- // Support: Firefox <=54
- // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)
- initial = initial / 2;
-
- // Trust units reported by jQuery.css
- unit = unit || initialInUnit[ 3 ];
-
- // Iteratively approximate from a nonzero starting point
- initialInUnit = +initial || 1;
-
- while ( maxIterations-- ) {
-
- // Evaluate and update our best guess (doubling guesses that zero out).
- // Finish if the scale equals or crosses 1 (making the old*new product non-positive).
- jQuery.style( elem, prop, initialInUnit + unit );
- if ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) {
- maxIterations = 0;
- }
- initialInUnit = initialInUnit / scale;
-
- }
-
- initialInUnit = initialInUnit * 2;
- jQuery.style( elem, prop, initialInUnit + unit );
-
- // Make sure we update the tween properties later on
- valueParts = valueParts || [];
- }
-
- if ( valueParts ) {
- initialInUnit = +initialInUnit || +initial || 0;
-
- // Apply relative offset (+=/-=) if specified
- adjusted = valueParts[ 1 ] ?
- initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] :
- +valueParts[ 2 ];
- if ( tween ) {
- tween.unit = unit;
- tween.start = initialInUnit;
- tween.end = adjusted;
- }
- }
- return adjusted;
-}
-
-
-var defaultDisplayMap = {};
-
-function getDefaultDisplay( elem ) {
- var temp,
- doc = elem.ownerDocument,
- nodeName = elem.nodeName,
- display = defaultDisplayMap[ nodeName ];
-
- if ( display ) {
- return display;
- }
-
- temp = doc.body.appendChild( doc.createElement( nodeName ) );
- display = jQuery.css( temp, "display" );
-
- temp.parentNode.removeChild( temp );
-
- if ( display === "none" ) {
- display = "block";
- }
- defaultDisplayMap[ nodeName ] = display;
-
- return display;
-}
-
-function showHide( elements, show ) {
- var display, elem,
- values = [],
- index = 0,
- length = elements.length;
-
- // Determine new display value for elements that need to change
- for ( ; index < length; index++ ) {
- elem = elements[ index ];
- if ( !elem.style ) {
- continue;
- }
-
- display = elem.style.display;
- if ( show ) {
-
- // Since we force visibility upon cascade-hidden elements, an immediate (and slow)
- // check is required in this first loop unless we have a nonempty display value (either
- // inline or about-to-be-restored)
- if ( display === "none" ) {
- values[ index ] = dataPriv.get( elem, "display" ) || null;
- if ( !values[ index ] ) {
- elem.style.display = "";
- }
- }
- if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) {
- values[ index ] = getDefaultDisplay( elem );
- }
- } else {
- if ( display !== "none" ) {
- values[ index ] = "none";
-
- // Remember what we're overwriting
- dataPriv.set( elem, "display", display );
- }
- }
- }
-
- // Set the display of the elements in a second loop to avoid constant reflow
- for ( index = 0; index < length; index++ ) {
- if ( values[ index ] != null ) {
- elements[ index ].style.display = values[ index ];
- }
- }
-
- return elements;
-}
-
-jQuery.fn.extend( {
- show: function() {
- return showHide( this, true );
- },
- hide: function() {
- return showHide( this );
- },
- toggle: function( state ) {
- if ( typeof state === "boolean" ) {
- return state ? this.show() : this.hide();
- }
-
- return this.each( function() {
- if ( isHiddenWithinTree( this ) ) {
- jQuery( this ).show();
- } else {
- jQuery( this ).hide();
- }
- } );
- }
-} );
-var rcheckableType = ( /^(?:checkbox|radio)$/i );
-
-var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]*)/i );
-
-var rscriptType = ( /^$|^module$|\/(?:java|ecma)script/i );
-
-
-
-( function() {
- var fragment = document.createDocumentFragment(),
- div = fragment.appendChild( document.createElement( "div" ) ),
- input = document.createElement( "input" );
-
- // Support: Android 4.0 - 4.3 only
- // Check state lost if the name is set (trac-11217)
- // Support: Windows Web Apps (WWA)
- // `name` and `type` must use .setAttribute for WWA (trac-14901)
- input.setAttribute( "type", "radio" );
- input.setAttribute( "checked", "checked" );
- input.setAttribute( "name", "t" );
-
- div.appendChild( input );
-
- // Support: Android <=4.1 only
- // Older WebKit doesn't clone checked state correctly in fragments
- support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;
-
- // Support: IE <=11 only
- // Make sure textarea (and checkbox) defaultValue is properly cloned
- div.innerHTML = "";
- support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;
-
- // Support: IE <=9 only
- // IE <=9 replaces tags with their contents when inserted outside of
- // the select element.
- div.innerHTML = " ";
- support.option = !!div.lastChild;
-} )();
-
-
-// We have to close these tags to support XHTML (trac-13200)
-var wrapMap = {
-
- // XHTML parsers do not magically insert elements in the
- // same way that tag soup parsers do. So we cannot shorten
- // this by omitting or other required elements.
- thead: [ 1, "" ],
- col: [ 2, "" ],
- tr: [ 2, "" ],
- td: [ 3, "" ],
-
- _default: [ 0, "", "" ]
-};
-
-wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
-wrapMap.th = wrapMap.td;
-
-// Support: IE <=9 only
-if ( !support.option ) {
- wrapMap.optgroup = wrapMap.option = [ 1, "", " " ];
-}
-
-
-function getAll( context, tag ) {
-
- // Support: IE <=9 - 11 only
- // Use typeof to avoid zero-argument method invocation on host objects (trac-15151)
- var ret;
-
- if ( typeof context.getElementsByTagName !== "undefined" ) {
- ret = context.getElementsByTagName( tag || "*" );
-
- } else if ( typeof context.querySelectorAll !== "undefined" ) {
- ret = context.querySelectorAll( tag || "*" );
-
- } else {
- ret = [];
- }
-
- if ( tag === undefined || tag && nodeName( context, tag ) ) {
- return jQuery.merge( [ context ], ret );
- }
-
- return ret;
-}
-
-
-// Mark scripts as having already been evaluated
-function setGlobalEval( elems, refElements ) {
- var i = 0,
- l = elems.length;
-
- for ( ; i < l; i++ ) {
- dataPriv.set(
- elems[ i ],
- "globalEval",
- !refElements || dataPriv.get( refElements[ i ], "globalEval" )
- );
- }
-}
-
-
-var rhtml = /<|?\w+;/;
-
-function buildFragment( elems, context, scripts, selection, ignored ) {
- var elem, tmp, tag, wrap, attached, j,
- fragment = context.createDocumentFragment(),
- nodes = [],
- i = 0,
- l = elems.length;
-
- for ( ; i < l; i++ ) {
- elem = elems[ i ];
-
- if ( elem || elem === 0 ) {
-
- // Add nodes directly
- if ( toType( elem ) === "object" ) {
-
- // Support: Android <=4.0 only, PhantomJS 1 only
- // push.apply(_, arraylike) throws on ancient WebKit
- jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );
-
- // Convert non-html into a text node
- } else if ( !rhtml.test( elem ) ) {
- nodes.push( context.createTextNode( elem ) );
-
- // Convert html into DOM nodes
- } else {
- tmp = tmp || fragment.appendChild( context.createElement( "div" ) );
-
- // Deserialize a standard representation
- tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase();
- wrap = wrapMap[ tag ] || wrapMap._default;
- tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];
-
- // Descend through wrappers to the right content
- j = wrap[ 0 ];
- while ( j-- ) {
- tmp = tmp.lastChild;
- }
-
- // Support: Android <=4.0 only, PhantomJS 1 only
- // push.apply(_, arraylike) throws on ancient WebKit
- jQuery.merge( nodes, tmp.childNodes );
-
- // Remember the top-level container
- tmp = fragment.firstChild;
-
- // Ensure the created nodes are orphaned (trac-12392)
- tmp.textContent = "";
- }
- }
- }
-
- // Remove wrapper from fragment
- fragment.textContent = "";
-
- i = 0;
- while ( ( elem = nodes[ i++ ] ) ) {
-
- // Skip elements already in the context collection (trac-4087)
- if ( selection && jQuery.inArray( elem, selection ) > -1 ) {
- if ( ignored ) {
- ignored.push( elem );
- }
- continue;
- }
-
- attached = isAttached( elem );
-
- // Append to fragment
- tmp = getAll( fragment.appendChild( elem ), "script" );
-
- // Preserve script evaluation history
- if ( attached ) {
- setGlobalEval( tmp );
- }
-
- // Capture executables
- if ( scripts ) {
- j = 0;
- while ( ( elem = tmp[ j++ ] ) ) {
- if ( rscriptType.test( elem.type || "" ) ) {
- scripts.push( elem );
- }
- }
- }
- }
-
- return fragment;
-}
-
-
-var rtypenamespace = /^([^.]*)(?:\.(.+)|)/;
-
-function returnTrue() {
- return true;
-}
-
-function returnFalse() {
- return false;
-}
-
-function on( elem, types, selector, data, fn, one ) {
- var origFn, type;
-
- // Types can be a map of types/handlers
- if ( typeof types === "object" ) {
-
- // ( types-Object, selector, data )
- if ( typeof selector !== "string" ) {
-
- // ( types-Object, data )
- data = data || selector;
- selector = undefined;
- }
- for ( type in types ) {
- on( elem, type, selector, data, types[ type ], one );
- }
- return elem;
- }
-
- if ( data == null && fn == null ) {
-
- // ( types, fn )
- fn = selector;
- data = selector = undefined;
- } else if ( fn == null ) {
- if ( typeof selector === "string" ) {
-
- // ( types, selector, fn )
- fn = data;
- data = undefined;
- } else {
-
- // ( types, data, fn )
- fn = data;
- data = selector;
- selector = undefined;
- }
- }
- if ( fn === false ) {
- fn = returnFalse;
- } else if ( !fn ) {
- return elem;
- }
-
- if ( one === 1 ) {
- origFn = fn;
- fn = function( event ) {
-
- // Can use an empty set, since event contains the info
- jQuery().off( event );
- return origFn.apply( this, arguments );
- };
-
- // Use same guid so caller can remove using origFn
- fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );
- }
- return elem.each( function() {
- jQuery.event.add( this, types, fn, data, selector );
- } );
-}
-
-/*
- * Helper functions for managing events -- not part of the public interface.
- * Props to Dean Edwards' addEvent library for many of the ideas.
- */
-jQuery.event = {
-
- global: {},
-
- add: function( elem, types, handler, data, selector ) {
-
- var handleObjIn, eventHandle, tmp,
- events, t, handleObj,
- special, handlers, type, namespaces, origType,
- elemData = dataPriv.get( elem );
-
- // Only attach events to objects that accept data
- if ( !acceptData( elem ) ) {
- return;
- }
-
- // Caller can pass in an object of custom data in lieu of the handler
- if ( handler.handler ) {
- handleObjIn = handler;
- handler = handleObjIn.handler;
- selector = handleObjIn.selector;
- }
-
- // Ensure that invalid selectors throw exceptions at attach time
- // Evaluate against documentElement in case elem is a non-element node (e.g., document)
- if ( selector ) {
- jQuery.find.matchesSelector( documentElement, selector );
- }
-
- // Make sure that the handler has a unique ID, used to find/remove it later
- if ( !handler.guid ) {
- handler.guid = jQuery.guid++;
- }
-
- // Init the element's event structure and main handler, if this is the first
- if ( !( events = elemData.events ) ) {
- events = elemData.events = Object.create( null );
- }
- if ( !( eventHandle = elemData.handle ) ) {
- eventHandle = elemData.handle = function( e ) {
-
- // Discard the second event of a jQuery.event.trigger() and
- // when an event is called after a page has unloaded
- return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ?
- jQuery.event.dispatch.apply( elem, arguments ) : undefined;
- };
- }
-
- // Handle multiple events separated by a space
- types = ( types || "" ).match( rnothtmlwhite ) || [ "" ];
- t = types.length;
- while ( t-- ) {
- tmp = rtypenamespace.exec( types[ t ] ) || [];
- type = origType = tmp[ 1 ];
- namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();
-
- // There *must* be a type, no attaching namespace-only handlers
- if ( !type ) {
- continue;
- }
-
- // If event changes its type, use the special event handlers for the changed type
- special = jQuery.event.special[ type ] || {};
-
- // If selector defined, determine special event api type, otherwise given type
- type = ( selector ? special.delegateType : special.bindType ) || type;
-
- // Update special based on newly reset type
- special = jQuery.event.special[ type ] || {};
-
- // handleObj is passed to all event handlers
- handleObj = jQuery.extend( {
- type: type,
- origType: origType,
- data: data,
- handler: handler,
- guid: handler.guid,
- selector: selector,
- needsContext: selector && jQuery.expr.match.needsContext.test( selector ),
- namespace: namespaces.join( "." )
- }, handleObjIn );
-
- // Init the event handler queue if we're the first
- if ( !( handlers = events[ type ] ) ) {
- handlers = events[ type ] = [];
- handlers.delegateCount = 0;
-
- // Only use addEventListener if the special events handler returns false
- if ( !special.setup ||
- special.setup.call( elem, data, namespaces, eventHandle ) === false ) {
-
- if ( elem.addEventListener ) {
- elem.addEventListener( type, eventHandle );
- }
- }
- }
-
- if ( special.add ) {
- special.add.call( elem, handleObj );
-
- if ( !handleObj.handler.guid ) {
- handleObj.handler.guid = handler.guid;
- }
- }
-
- // Add to the element's handler list, delegates in front
- if ( selector ) {
- handlers.splice( handlers.delegateCount++, 0, handleObj );
- } else {
- handlers.push( handleObj );
- }
-
- // Keep track of which events have ever been used, for event optimization
- jQuery.event.global[ type ] = true;
- }
-
- },
-
- // Detach an event or set of events from an element
- remove: function( elem, types, handler, selector, mappedTypes ) {
-
- var j, origCount, tmp,
- events, t, handleObj,
- special, handlers, type, namespaces, origType,
- elemData = dataPriv.hasData( elem ) && dataPriv.get( elem );
-
- if ( !elemData || !( events = elemData.events ) ) {
- return;
- }
-
- // Once for each type.namespace in types; type may be omitted
- types = ( types || "" ).match( rnothtmlwhite ) || [ "" ];
- t = types.length;
- while ( t-- ) {
- tmp = rtypenamespace.exec( types[ t ] ) || [];
- type = origType = tmp[ 1 ];
- namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();
-
- // Unbind all events (on this namespace, if provided) for the element
- if ( !type ) {
- for ( type in events ) {
- jQuery.event.remove( elem, type + types[ t ], handler, selector, true );
- }
- continue;
- }
-
- special = jQuery.event.special[ type ] || {};
- type = ( selector ? special.delegateType : special.bindType ) || type;
- handlers = events[ type ] || [];
- tmp = tmp[ 2 ] &&
- new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" );
-
- // Remove matching events
- origCount = j = handlers.length;
- while ( j-- ) {
- handleObj = handlers[ j ];
-
- if ( ( mappedTypes || origType === handleObj.origType ) &&
- ( !handler || handler.guid === handleObj.guid ) &&
- ( !tmp || tmp.test( handleObj.namespace ) ) &&
- ( !selector || selector === handleObj.selector ||
- selector === "**" && handleObj.selector ) ) {
- handlers.splice( j, 1 );
-
- if ( handleObj.selector ) {
- handlers.delegateCount--;
- }
- if ( special.remove ) {
- special.remove.call( elem, handleObj );
- }
- }
- }
-
- // Remove generic event handler if we removed something and no more handlers exist
- // (avoids potential for endless recursion during removal of special event handlers)
- if ( origCount && !handlers.length ) {
- if ( !special.teardown ||
- special.teardown.call( elem, namespaces, elemData.handle ) === false ) {
-
- jQuery.removeEvent( elem, type, elemData.handle );
- }
-
- delete events[ type ];
- }
- }
-
- // Remove data and the expando if it's no longer used
- if ( jQuery.isEmptyObject( events ) ) {
- dataPriv.remove( elem, "handle events" );
- }
- },
-
- dispatch: function( nativeEvent ) {
-
- var i, j, ret, matched, handleObj, handlerQueue,
- args = new Array( arguments.length ),
-
- // Make a writable jQuery.Event from the native event object
- event = jQuery.event.fix( nativeEvent ),
-
- handlers = (
- dataPriv.get( this, "events" ) || Object.create( null )
- )[ event.type ] || [],
- special = jQuery.event.special[ event.type ] || {};
-
- // Use the fix-ed jQuery.Event rather than the (read-only) native event
- args[ 0 ] = event;
-
- for ( i = 1; i < arguments.length; i++ ) {
- args[ i ] = arguments[ i ];
- }
-
- event.delegateTarget = this;
-
- // Call the preDispatch hook for the mapped type, and let it bail if desired
- if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {
- return;
- }
-
- // Determine handlers
- handlerQueue = jQuery.event.handlers.call( this, event, handlers );
-
- // Run delegates first; they may want to stop propagation beneath us
- i = 0;
- while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) {
- event.currentTarget = matched.elem;
-
- j = 0;
- while ( ( handleObj = matched.handlers[ j++ ] ) &&
- !event.isImmediatePropagationStopped() ) {
-
- // If the event is namespaced, then each handler is only invoked if it is
- // specially universal or its namespaces are a superset of the event's.
- if ( !event.rnamespace || handleObj.namespace === false ||
- event.rnamespace.test( handleObj.namespace ) ) {
-
- event.handleObj = handleObj;
- event.data = handleObj.data;
-
- ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle ||
- handleObj.handler ).apply( matched.elem, args );
-
- if ( ret !== undefined ) {
- if ( ( event.result = ret ) === false ) {
- event.preventDefault();
- event.stopPropagation();
- }
- }
- }
- }
- }
-
- // Call the postDispatch hook for the mapped type
- if ( special.postDispatch ) {
- special.postDispatch.call( this, event );
- }
-
- return event.result;
- },
-
- handlers: function( event, handlers ) {
- var i, handleObj, sel, matchedHandlers, matchedSelectors,
- handlerQueue = [],
- delegateCount = handlers.delegateCount,
- cur = event.target;
-
- // Find delegate handlers
- if ( delegateCount &&
-
- // Support: IE <=9
- // Black-hole SVG instance trees (trac-13180)
- cur.nodeType &&
-
- // Support: Firefox <=42
- // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)
- // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click
- // Support: IE 11 only
- // ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343)
- !( event.type === "click" && event.button >= 1 ) ) {
-
- for ( ; cur !== this; cur = cur.parentNode || this ) {
-
- // Don't check non-elements (trac-13208)
- // Don't process clicks on disabled elements (trac-6911, trac-8165, trac-11382, trac-11764)
- if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) {
- matchedHandlers = [];
- matchedSelectors = {};
- for ( i = 0; i < delegateCount; i++ ) {
- handleObj = handlers[ i ];
-
- // Don't conflict with Object.prototype properties (trac-13203)
- sel = handleObj.selector + " ";
-
- if ( matchedSelectors[ sel ] === undefined ) {
- matchedSelectors[ sel ] = handleObj.needsContext ?
- jQuery( sel, this ).index( cur ) > -1 :
- jQuery.find( sel, this, null, [ cur ] ).length;
- }
- if ( matchedSelectors[ sel ] ) {
- matchedHandlers.push( handleObj );
- }
- }
- if ( matchedHandlers.length ) {
- handlerQueue.push( { elem: cur, handlers: matchedHandlers } );
- }
- }
- }
- }
-
- // Add the remaining (directly-bound) handlers
- cur = this;
- if ( delegateCount < handlers.length ) {
- handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } );
- }
-
- return handlerQueue;
- },
-
- addProp: function( name, hook ) {
- Object.defineProperty( jQuery.Event.prototype, name, {
- enumerable: true,
- configurable: true,
-
- get: isFunction( hook ) ?
- function() {
- if ( this.originalEvent ) {
- return hook( this.originalEvent );
- }
- } :
- function() {
- if ( this.originalEvent ) {
- return this.originalEvent[ name ];
- }
- },
-
- set: function( value ) {
- Object.defineProperty( this, name, {
- enumerable: true,
- configurable: true,
- writable: true,
- value: value
- } );
- }
- } );
- },
-
- fix: function( originalEvent ) {
- return originalEvent[ jQuery.expando ] ?
- originalEvent :
- new jQuery.Event( originalEvent );
- },
-
- special: {
- load: {
-
- // Prevent triggered image.load events from bubbling to window.load
- noBubble: true
- },
- click: {
-
- // Utilize native event to ensure correct state for checkable inputs
- setup: function( data ) {
-
- // For mutual compressibility with _default, replace `this` access with a local var.
- // `|| data` is dead code meant only to preserve the variable through minification.
- var el = this || data;
-
- // Claim the first handler
- if ( rcheckableType.test( el.type ) &&
- el.click && nodeName( el, "input" ) ) {
-
- // dataPriv.set( el, "click", ... )
- leverageNative( el, "click", true );
- }
-
- // Return false to allow normal processing in the caller
- return false;
- },
- trigger: function( data ) {
-
- // For mutual compressibility with _default, replace `this` access with a local var.
- // `|| data` is dead code meant only to preserve the variable through minification.
- var el = this || data;
-
- // Force setup before triggering a click
- if ( rcheckableType.test( el.type ) &&
- el.click && nodeName( el, "input" ) ) {
-
- leverageNative( el, "click" );
- }
-
- // Return non-false to allow normal event-path propagation
- return true;
- },
-
- // For cross-browser consistency, suppress native .click() on links
- // Also prevent it if we're currently inside a leveraged native-event stack
- _default: function( event ) {
- var target = event.target;
- return rcheckableType.test( target.type ) &&
- target.click && nodeName( target, "input" ) &&
- dataPriv.get( target, "click" ) ||
- nodeName( target, "a" );
- }
- },
-
- beforeunload: {
- postDispatch: function( event ) {
-
- // Support: Firefox 20+
- // Firefox doesn't alert if the returnValue field is not set.
- if ( event.result !== undefined && event.originalEvent ) {
- event.originalEvent.returnValue = event.result;
- }
- }
- }
- }
-};
-
-// Ensure the presence of an event listener that handles manually-triggered
-// synthetic events by interrupting progress until reinvoked in response to
-// *native* events that it fires directly, ensuring that state changes have
-// already occurred before other listeners are invoked.
-function leverageNative( el, type, isSetup ) {
-
- // Missing `isSetup` indicates a trigger call, which must force setup through jQuery.event.add
- if ( !isSetup ) {
- if ( dataPriv.get( el, type ) === undefined ) {
- jQuery.event.add( el, type, returnTrue );
- }
- return;
- }
-
- // Register the controller as a special universal handler for all event namespaces
- dataPriv.set( el, type, false );
- jQuery.event.add( el, type, {
- namespace: false,
- handler: function( event ) {
- var result,
- saved = dataPriv.get( this, type );
-
- if ( ( event.isTrigger & 1 ) && this[ type ] ) {
-
- // Interrupt processing of the outer synthetic .trigger()ed event
- if ( !saved ) {
-
- // Store arguments for use when handling the inner native event
- // There will always be at least one argument (an event object), so this array
- // will not be confused with a leftover capture object.
- saved = slice.call( arguments );
- dataPriv.set( this, type, saved );
-
- // Trigger the native event and capture its result
- this[ type ]();
- result = dataPriv.get( this, type );
- dataPriv.set( this, type, false );
-
- if ( saved !== result ) {
-
- // Cancel the outer synthetic event
- event.stopImmediatePropagation();
- event.preventDefault();
-
- return result;
- }
-
- // If this is an inner synthetic event for an event with a bubbling surrogate
- // (focus or blur), assume that the surrogate already propagated from triggering
- // the native event and prevent that from happening again here.
- // This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the
- // bubbling surrogate propagates *after* the non-bubbling base), but that seems
- // less bad than duplication.
- } else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) {
- event.stopPropagation();
- }
-
- // If this is a native event triggered above, everything is now in order
- // Fire an inner synthetic event with the original arguments
- } else if ( saved ) {
-
- // ...and capture the result
- dataPriv.set( this, type, jQuery.event.trigger(
- saved[ 0 ],
- saved.slice( 1 ),
- this
- ) );
-
- // Abort handling of the native event by all jQuery handlers while allowing
- // native handlers on the same element to run. On target, this is achieved
- // by stopping immediate propagation just on the jQuery event. However,
- // the native event is re-wrapped by a jQuery one on each level of the
- // propagation so the only way to stop it for jQuery is to stop it for
- // everyone via native `stopPropagation()`. This is not a problem for
- // focus/blur which don't bubble, but it does also stop click on checkboxes
- // and radios. We accept this limitation.
- event.stopPropagation();
- event.isImmediatePropagationStopped = returnTrue;
- }
- }
- } );
-}
-
-jQuery.removeEvent = function( elem, type, handle ) {
-
- // This "if" is needed for plain objects
- if ( elem.removeEventListener ) {
- elem.removeEventListener( type, handle );
- }
-};
-
-jQuery.Event = function( src, props ) {
-
- // Allow instantiation without the 'new' keyword
- if ( !( this instanceof jQuery.Event ) ) {
- return new jQuery.Event( src, props );
- }
-
- // Event object
- if ( src && src.type ) {
- this.originalEvent = src;
- this.type = src.type;
-
- // Events bubbling up the document may have been marked as prevented
- // by a handler lower down the tree; reflect the correct value.
- this.isDefaultPrevented = src.defaultPrevented ||
- src.defaultPrevented === undefined &&
-
- // Support: Android <=2.3 only
- src.returnValue === false ?
- returnTrue :
- returnFalse;
-
- // Create target properties
- // Support: Safari <=6 - 7 only
- // Target should not be a text node (trac-504, trac-13143)
- this.target = ( src.target && src.target.nodeType === 3 ) ?
- src.target.parentNode :
- src.target;
-
- this.currentTarget = src.currentTarget;
- this.relatedTarget = src.relatedTarget;
-
- // Event type
- } else {
- this.type = src;
- }
-
- // Put explicitly provided properties onto the event object
- if ( props ) {
- jQuery.extend( this, props );
- }
-
- // Create a timestamp if incoming event doesn't have one
- this.timeStamp = src && src.timeStamp || Date.now();
-
- // Mark it as fixed
- this[ jQuery.expando ] = true;
-};
-
-// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
-// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
-jQuery.Event.prototype = {
- constructor: jQuery.Event,
- isDefaultPrevented: returnFalse,
- isPropagationStopped: returnFalse,
- isImmediatePropagationStopped: returnFalse,
- isSimulated: false,
-
- preventDefault: function() {
- var e = this.originalEvent;
-
- this.isDefaultPrevented = returnTrue;
-
- if ( e && !this.isSimulated ) {
- e.preventDefault();
- }
- },
- stopPropagation: function() {
- var e = this.originalEvent;
-
- this.isPropagationStopped = returnTrue;
-
- if ( e && !this.isSimulated ) {
- e.stopPropagation();
- }
- },
- stopImmediatePropagation: function() {
- var e = this.originalEvent;
-
- this.isImmediatePropagationStopped = returnTrue;
-
- if ( e && !this.isSimulated ) {
- e.stopImmediatePropagation();
- }
-
- this.stopPropagation();
- }
-};
-
-// Includes all common event props including KeyEvent and MouseEvent specific props
-jQuery.each( {
- altKey: true,
- bubbles: true,
- cancelable: true,
- changedTouches: true,
- ctrlKey: true,
- detail: true,
- eventPhase: true,
- metaKey: true,
- pageX: true,
- pageY: true,
- shiftKey: true,
- view: true,
- "char": true,
- code: true,
- charCode: true,
- key: true,
- keyCode: true,
- button: true,
- buttons: true,
- clientX: true,
- clientY: true,
- offsetX: true,
- offsetY: true,
- pointerId: true,
- pointerType: true,
- screenX: true,
- screenY: true,
- targetTouches: true,
- toElement: true,
- touches: true,
- which: true
-}, jQuery.event.addProp );
-
-jQuery.each( { focus: "focusin", blur: "focusout" }, function( type, delegateType ) {
-
- function focusMappedHandler( nativeEvent ) {
- if ( document.documentMode ) {
-
- // Support: IE 11+
- // Attach a single focusin/focusout handler on the document while someone wants
- // focus/blur. This is because the former are synchronous in IE while the latter
- // are async. In other browsers, all those handlers are invoked synchronously.
-
- // `handle` from private data would already wrap the event, but we need
- // to change the `type` here.
- var handle = dataPriv.get( this, "handle" ),
- event = jQuery.event.fix( nativeEvent );
- event.type = nativeEvent.type === "focusin" ? "focus" : "blur";
- event.isSimulated = true;
-
- // First, handle focusin/focusout
- handle( nativeEvent );
-
- // ...then, handle focus/blur
- //
- // focus/blur don't bubble while focusin/focusout do; simulate the former by only
- // invoking the handler at the lower level.
- if ( event.target === event.currentTarget ) {
-
- // The setup part calls `leverageNative`, which, in turn, calls
- // `jQuery.event.add`, so event handle will already have been set
- // by this point.
- handle( event );
- }
- } else {
-
- // For non-IE browsers, attach a single capturing handler on the document
- // while someone wants focusin/focusout.
- jQuery.event.simulate( delegateType, nativeEvent.target,
- jQuery.event.fix( nativeEvent ) );
- }
- }
-
- jQuery.event.special[ type ] = {
-
- // Utilize native event if possible so blur/focus sequence is correct
- setup: function() {
-
- var attaches;
-
- // Claim the first handler
- // dataPriv.set( this, "focus", ... )
- // dataPriv.set( this, "blur", ... )
- leverageNative( this, type, true );
-
- if ( document.documentMode ) {
-
- // Support: IE 9 - 11+
- // We use the same native handler for focusin & focus (and focusout & blur)
- // so we need to coordinate setup & teardown parts between those events.
- // Use `delegateType` as the key as `type` is already used by `leverageNative`.
- attaches = dataPriv.get( this, delegateType );
- if ( !attaches ) {
- this.addEventListener( delegateType, focusMappedHandler );
- }
- dataPriv.set( this, delegateType, ( attaches || 0 ) + 1 );
- } else {
-
- // Return false to allow normal processing in the caller
- return false;
- }
- },
- trigger: function() {
-
- // Force setup before trigger
- leverageNative( this, type );
-
- // Return non-false to allow normal event-path propagation
- return true;
- },
-
- teardown: function() {
- var attaches;
-
- if ( document.documentMode ) {
- attaches = dataPriv.get( this, delegateType ) - 1;
- if ( !attaches ) {
- this.removeEventListener( delegateType, focusMappedHandler );
- dataPriv.remove( this, delegateType );
- } else {
- dataPriv.set( this, delegateType, attaches );
- }
- } else {
-
- // Return false to indicate standard teardown should be applied
- return false;
- }
- },
-
- // Suppress native focus or blur if we're currently inside
- // a leveraged native-event stack
- _default: function( event ) {
- return dataPriv.get( event.target, type );
- },
-
- delegateType: delegateType
- };
-
- // Support: Firefox <=44
- // Firefox doesn't have focus(in | out) events
- // Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787
- //
- // Support: Chrome <=48 - 49, Safari <=9.0 - 9.1
- // focus(in | out) events fire after focus & blur events,
- // which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order
- // Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857
- //
- // Support: IE 9 - 11+
- // To preserve relative focusin/focus & focusout/blur event order guaranteed on the 3.x branch,
- // attach a single handler for both events in IE.
- jQuery.event.special[ delegateType ] = {
- setup: function() {
-
- // Handle: regular nodes (via `this.ownerDocument`), window
- // (via `this.document`) & document (via `this`).
- var doc = this.ownerDocument || this.document || this,
- dataHolder = document.documentMode ? this : doc,
- attaches = dataPriv.get( dataHolder, delegateType );
-
- // Support: IE 9 - 11+
- // We use the same native handler for focusin & focus (and focusout & blur)
- // so we need to coordinate setup & teardown parts between those events.
- // Use `delegateType` as the key as `type` is already used by `leverageNative`.
- if ( !attaches ) {
- if ( document.documentMode ) {
- this.addEventListener( delegateType, focusMappedHandler );
- } else {
- doc.addEventListener( type, focusMappedHandler, true );
- }
- }
- dataPriv.set( dataHolder, delegateType, ( attaches || 0 ) + 1 );
- },
- teardown: function() {
- var doc = this.ownerDocument || this.document || this,
- dataHolder = document.documentMode ? this : doc,
- attaches = dataPriv.get( dataHolder, delegateType ) - 1;
-
- if ( !attaches ) {
- if ( document.documentMode ) {
- this.removeEventListener( delegateType, focusMappedHandler );
- } else {
- doc.removeEventListener( type, focusMappedHandler, true );
- }
- dataPriv.remove( dataHolder, delegateType );
- } else {
- dataPriv.set( dataHolder, delegateType, attaches );
- }
- }
- };
-} );
-
-// Create mouseenter/leave events using mouseover/out and event-time checks
-// so that event delegation works in jQuery.
-// Do the same for pointerenter/pointerleave and pointerover/pointerout
-//
-// Support: Safari 7 only
-// Safari sends mouseenter too often; see:
-// https://bugs.chromium.org/p/chromium/issues/detail?id=470258
-// for the description of the bug (it existed in older Chrome versions as well).
-jQuery.each( {
- mouseenter: "mouseover",
- mouseleave: "mouseout",
- pointerenter: "pointerover",
- pointerleave: "pointerout"
-}, function( orig, fix ) {
- jQuery.event.special[ orig ] = {
- delegateType: fix,
- bindType: fix,
-
- handle: function( event ) {
- var ret,
- target = this,
- related = event.relatedTarget,
- handleObj = event.handleObj;
-
- // For mouseenter/leave call the handler if related is outside the target.
- // NB: No relatedTarget if the mouse left/entered the browser window
- if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) {
- event.type = handleObj.origType;
- ret = handleObj.handler.apply( this, arguments );
- event.type = fix;
- }
- return ret;
- }
- };
-} );
-
-jQuery.fn.extend( {
-
- on: function( types, selector, data, fn ) {
- return on( this, types, selector, data, fn );
- },
- one: function( types, selector, data, fn ) {
- return on( this, types, selector, data, fn, 1 );
- },
- off: function( types, selector, fn ) {
- var handleObj, type;
- if ( types && types.preventDefault && types.handleObj ) {
-
- // ( event ) dispatched jQuery.Event
- handleObj = types.handleObj;
- jQuery( types.delegateTarget ).off(
- handleObj.namespace ?
- handleObj.origType + "." + handleObj.namespace :
- handleObj.origType,
- handleObj.selector,
- handleObj.handler
- );
- return this;
- }
- if ( typeof types === "object" ) {
-
- // ( types-object [, selector] )
- for ( type in types ) {
- this.off( type, selector, types[ type ] );
- }
- return this;
- }
- if ( selector === false || typeof selector === "function" ) {
-
- // ( types [, fn] )
- fn = selector;
- selector = undefined;
- }
- if ( fn === false ) {
- fn = returnFalse;
- }
- return this.each( function() {
- jQuery.event.remove( this, types, fn, selector );
- } );
- }
-} );
-
-
-var
-
- // Support: IE <=10 - 11, Edge 12 - 13 only
- // In IE/Edge using regex groups here causes severe slowdowns.
- // See https://connect.microsoft.com/IE/feedback/details/1736512/
- rnoInnerhtml = /