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garmin_fit.cc
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/*
Support for FIT track files.
Copyright (C) 2011 Paul Brook, [email protected]
Copyright (C) 2003-2011 Robert Lipe, [email protected]
Copyright (C) 2019 Martin Buck, [email protected]
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <cstdint>
#include <cstdio> // for EOF, snprintf
#include <vector>
#include <deque>
#include <utility>
#include <QtCore/QDateTime> // for QDateTime
#include <QtCore/QString> // for QString
#include "defs.h"
#include "gbfile.h" // for gbfgetc, gbfread, gbfclose, gbfgetuint16, gbfgetuint32, gbfile, gbfopen_le
#include "jeeps/gpsmath.h" // for GPS_Math_Semi_To_Deg
#define MYNAME "fit"
// constants for global IDs
const int kIdFileId = 0;
const int kIdDeviceSettings = 0;
const int kIdLap = 19;
const int kIdRecord = 20;
const int kIdEvent = 21;
const int kIdCourse = 31;
const int kIdCoursePoint = 32;
// constants for local IDs (for writing)
const int kWriteLocalIdFileId = 0;
const int kWriteLocalIdCourse = 1;
const int kWriteLocalIdLap = 2;
const int kWriteLocalIdEvent = 3;
const int kWriteLocalIdCoursePoint = 4;
const int kWriteLocalIdRecord = 5;
// constants for message fields
// for all global IDs
const int kFieldTimestamp = 253;
const int kFieldMessageIndex = 254;
// for global ID: file id
const int kFieldType = 0;
const int kFieldManufacturer = 1;
const int kFieldProduct = 2;
const int kFieldTimeCreated = 4;
// for global ID: device settings
const int kFieldGlobalUtcOffset = 4;
// for global ID: lap
const int kFieldStartTime = 2;
const int kFieldStartLatitude = 3;
const int kFieldStartLongitude = 4;
const int kFieldEndLatitude = 5;
const int kFieldEndLongitude = 6;
const int kFieldElapsedTime = 7;
const int kFieldTotalTimerTime = 8;
const int kFieldTotalDistance = 9;
const int kFieldAvgSpeed = 13;
const int kFieldMaxSpeed = 14;
// for global ID: record
const int kFieldLatitude = 0;
const int kFieldLongitude = 1;
const int kFieldAltitude = 2;
const int kFieldHeartRate = 3;
const int kFieldCadence = 4;
const int kFieldDistance = 5;
const int kFieldSpeed = 6;
const int kFieldPower = 7;
const int kFieldTemperature = 13;
const int kFieldEnhancedSpeed = 73;
const int kFieldEnhancedAltitude = 78;
// for global ID: event
const int kFieldEvent = 0;
const int kEnumEventTimer = 0;
const int kFieldEventType = 1;
const int kEnumEventTypeStart = 0;
const int kFieldEventGroup = 4;
// for global ID: course
const int kFieldSport = 4;
const int kFieldName = 5;
// for global ID: course point
const int kFieldCPTimeStamp = 1;
const int kFieldCPPositionLat = 2;
const int kFieldCPPositionLong = 3;
const int kFieldCPDistance = 4;
const int kFieldCPName = 6;
const int kFieldCPType = 5;
// For developer fields as a non conflicting id
const int kFieldInvalid = 255;
// types for message definitions
const int kTypeEnum = 0x00;
const int kTypeUint8 = 0x02;
const int kTypeString = 0x07;
const int kTypeUint16 = 0x84;
const int kTypeSint32 = 0x85;
const int kTypeUint32 = 0x86;
// misc. constants for message fields
const int kFileCourse = 0x06;
const int kEventTimer = 0x00;
const int kEventTypeStart = 0x00;
const int kEventTypeStopDisableAll = 0x09;
const int kCoursePointTypeGeneric = 0x00;
const int kCoursePointTypeLeft = 0x06;
const int kCoursePointTypeRight = 0x07;
const int kWriteHeaderLen = 12;
const int kWriteHeaderCrcLen = 14;
const double kSynthSpeed = 10.0 * 1000 / 3600; /* speed in m/s */
static char* opt_allpoints = nullptr;
static int lap_ct = 0;
static bool new_trkseg = false;
static bool write_header_msgs = false;
static
QVector<arglist_t> fit_args = {
{
"allpoints", &opt_allpoints,
"Read all points even if latitude or longitude is missing",
nullptr, ARGTYPE_BOOL, ARG_NOMINMAX, nullptr
},
};
const std::vector<std::pair<QString, int> > kCoursePointTypeMapping = {
{"left", kCoursePointTypeLeft},
{"links", kCoursePointTypeLeft},
{"gauche", kCoursePointTypeLeft},
{"izquierda", kCoursePointTypeLeft},
{"sinistra", kCoursePointTypeLeft},
{"right", kCoursePointTypeRight},
{"rechts", kCoursePointTypeRight},
{"droit", kCoursePointTypeRight},
{"derecha", kCoursePointTypeRight},
{"destro", kCoursePointTypeRight},
};
struct fit_field_t {
int id;
int size;
int type;
};
struct fit_message_def {
int endian;
int global_id;
int num_fields;
fit_field_t* fields;
};
static struct {
int len;
int endian;
route_head* track;
uint32_t last_timestamp;
uint32_t global_utc_offset;
fit_message_def message_def[16];
} fit_data;
struct FitCourseRecordPoint {
FitCourseRecordPoint(const Waypoint &wpt, bool is_course_point, unsigned int course_point_type = kCoursePointTypeGeneric)
: lat(wpt.latitude),
lon(wpt.longitude),
altitude(wpt.altitude),
speed(WAYPT_HAS((&wpt), speed) ? wpt.speed : -1),
odometer_distance(wpt.odometer_distance),
creation_time(wpt.creation_time),
shortname(wpt.shortname),
is_course_point(is_course_point),
course_point_type(course_point_type) { }
double lat, lon, altitude;
double speed, odometer_distance;
gpsbabel::DateTime creation_time;
QString shortname;
bool is_course_point;
unsigned int course_point_type;
};
std::deque<FitCourseRecordPoint> course, waypoints;
static gbfile* fin;
static gbfile* fout;
/*******************************************************************************
* %%% global callbacks called by gpsbabel main process %%% *
*******************************************************************************/
static void
fit_rd_init(const QString& fname)
{
fin = gbfopen_le(fname, "rb", MYNAME);
}
static void
fit_rd_deinit()
{
for (auto &local_id : fit_data.message_def) {
fit_message_def* def = &local_id;
if (def->fields) {
xfree(def->fields);
def->fields = nullptr;
}
}
gbfclose(fin);
}
static void
fit_wr_init(const QString& fname)
{
fout = gbfopen_le(fname, "w+b", MYNAME);
}
static void
fit_wr_deinit()
{
gbfclose(fout);
}
/*******************************************************************************
* fit_parse_header- parse the global FIT header
*******************************************************************************/
static void
fit_parse_header()
{
char sig[4];
int len = gbfgetc(fin);
if (len == EOF || len < 12) {
fatal(MYNAME ": Bad header\n");
}
if (global_opts.debug_level >= 1) {
debug_print(1,"%s: header len=%d\n", MYNAME, len);
}
int ver = gbfgetc(fin);
if (ver == EOF || (ver >> 4) > 2)
fatal(MYNAME ": Unsupported protocol version %d.%d\n",
ver >> 4, ver & 0xf);
if (global_opts.debug_level >= 1) {
debug_print(1,"%s: protocol version=%d\n", MYNAME, ver);
}
// profile version
ver = gbfgetuint16(fin);
// data length
fit_data.len = gbfgetuint32(fin);
// File signature
is_fatal(gbfread(sig, 4, 1, fin) != 1,
MYNAME ": Unexpected end of file\n");
if (sig[0] != '.' || sig[1] != 'F' || sig[2] != 'I' || sig[3] != 'T') {
fatal(MYNAME ": .FIT signature missing\n");
}
if (global_opts.debug_level >= 1) {
debug_print(1,"%s: profile version=%d\n", MYNAME, ver);
debug_print(1,"%s: fit_data.len=%d\n", MYNAME, fit_data.len);
}
if (len > 12) {
// Unused according to Ingo Arndt
gbfgetuint16(fin);
}
fit_data.global_utc_offset = 0;
}
static uint8_t
fit_getuint8()
{
if (fit_data.len == 0) {
// fail gracefully for GARMIN Edge 800 with newest firmware, seems to write a wrong record length
// for the last record.
//fatal(MYNAME ": record truncated: fit_data.len=0\n");
if (global_opts.debug_level >= 1) {
warning("%s: record truncated: fit_data.len=0\n", MYNAME);
}
return 0;
}
int val = gbfgetc(fin);
if (val == EOF) {
fatal(MYNAME ": unexpected end of file with fit_data.len=%d\n",fit_data.len);
}
fit_data.len--;
return (uint8_t)val;
}
static uint16_t
fit_getuint16()
{
char buf[2];
if (fit_data.len < 2) {
fatal(MYNAME ": record truncated: expecting char[2], but only got %d\n",fit_data.len);
}
is_fatal(gbfread(buf, 2, 1, fin) != 1,
MYNAME ": unexpected end of file with fit_data.len=%d\n",fit_data.len);
fit_data.len -= 2;
if (fit_data.endian) {
return be_read16(buf);
} else {
return le_read16(buf);
}
}
static uint32_t
fit_getuint32()
{
char buf[4];
if (fit_data.len < 4) {
fatal(MYNAME ": record truncated: expecting char[4], but only got %d\n",fit_data.len);
}
is_fatal(gbfread(buf, 4, 1, fin) != 1,
MYNAME ": unexpected end of file with fit_data.len=%d\n",fit_data.len);
fit_data.len -= 4;
if (fit_data.endian) {
return be_read32(buf);
} else {
return le_read32(buf);
}
}
static void
fit_parse_definition_message(uint8_t header)
{
int local_id = header & 0x0f;
fit_message_def* def = &fit_data.message_def[local_id];
if (def->fields) {
xfree(def->fields);
}
// first byte is reserved. It's usually 0 and we don't know what it is,
// but we've seen some files that are 0x40. So we just read it and toss it.
int i = fit_getuint8();
// second byte is endianness
def->endian = fit_getuint8();
if (def->endian > 1) {
warning(MYNAME ": Unusual endian field (interpreting as big endian): %d\n",def->endian);
}
fit_data.endian = def->endian;
// next two bytes are the global message number
def->global_id = fit_getuint16();
// byte 5 has the number of records in the remainder of the definition message
def->num_fields = fit_getuint8();
if (global_opts.debug_level >= 8) {
debug_print(8,"%s: definition message contains %d records\n",MYNAME, def->num_fields);
}
if (def->num_fields == 0) {
def->fields = (fit_field_t*) xmalloc(sizeof(fit_field_t));
}
// remainder of the definition message is data at one byte per field * 3 fields
if (def->num_fields > 0) {
def->fields = (fit_field_t*) xmalloc(def->num_fields * sizeof(fit_field_t));
for (i = 0; i < def->num_fields; i++) {
def->fields[i].id = fit_getuint8();
def->fields[i].size = fit_getuint8();
def->fields[i].type = fit_getuint8();
if (global_opts.debug_level >= 8) {
debug_print(8,"%s: record %d ID: %d SIZE: %d TYPE: %d fit_data.len=%d\n",
MYNAME, i, def->fields[i].id, def->fields[i].size, def->fields[i].type,fit_data.len);
}
}
}
// If we have developer fields (since version 2.0) they must be read too
// These is one byte containing the number of fields and 3 bytes for every field.
// So this is identical to the normal fields but the meaning of the content is different.
//
// Currently we just want to ignore the developer fields because they are not meant
// to hold relevant data we need (currently handle) for the conversion.
// For simplicity using the existing infrastructure we do it in the following way:
// * We read it in as normal fields
// * We set the field id to kFieldInvalid so that it do not interfere with valid id's from
// the normal fields.
// -In our opinion in practice this will not happen, because we do not expect
// developer fields e.g. inside lap or record records. But we want to be safe here.
// * We do not have to change the type as we did for the id above, because fit_read_field()
// already uses the size information to read the data, if the type does not match the size.
//
// If we want to change this or if we want to avoid the xrealloc call, we can change
// it in the future by e.g. extending the fit_message_def struct.
// Bit 5 of the header specify if we have developer fields in the data message
bool hasDevFields = static_cast<bool>(header & 0x20);
if (hasDevFields) {
int numOfDevFields = fit_getuint8();
if (global_opts.debug_level >= 8) {
debug_print(8,"%s: definition message contains %d developer records\n",MYNAME, numOfDevFields);
}
if (numOfDevFields == 0) {
return;
}
int numOfFields = def->num_fields+numOfDevFields;
def->fields = (fit_field_t*) xrealloc(def->fields, numOfFields * sizeof(fit_field_t));
for (i = def->num_fields; i < numOfFields; i++) {
def->fields[i].id = fit_getuint8();
def->fields[i].size = fit_getuint8();
def->fields[i].type = fit_getuint8();
if (global_opts.debug_level >= 8) {
debug_print(8,"%s: developer record %d ID: %d SIZE: %d TYPE: %d fit_data.len=%d\n",
MYNAME, i-def->num_fields, def->fields[i].id, def->fields[i].size, def->fields[i].type,fit_data.len);
}
// Because we parse developer fields like normal fields and we do not want
// that the field id interfere which valid id's from the normal fields
def->fields[i].id = kFieldInvalid;
}
def->num_fields = numOfFields;
}
}
static uint32_t
fit_read_field(fit_field_t* f)
{
/* https://forums.garmin.com/showthread.php?223645-Vivoactive-problems-plus-suggestions-for-future-firmwares&p=610929#post610929
* Per section 4.2.1.4.2 of the FIT Protocol the size of a field may be a
* multiple of the size of the underlying type, indicating the field
* contains multiple elements represented as an array.
*
* Garmin Product Support
*/
// In the case that the field contains one value of the indicated type we return that value,
// otherwise we just skip over the data.
int i;
if (global_opts.debug_level >= 8) {
debug_print(8,"%s: fit_read_field: read data field with f->type=0x%X and f->size=%d fit_data.len=%d\n",
MYNAME, f->type, f->size, fit_data.len);
}
switch (f->type) {
case 0: // enum
case 1: // sint8
case 2: // uint8
if (f->size == 1) {
return fit_getuint8();
} else { // ignore array data
for (i = 0; i < f->size; i++) {
fit_getuint8();
}
if (global_opts.debug_level >= 8) {
debug_print(8, "%s: fit_read_field: skipping 1-byte array data\n", MYNAME);
}
return -1;
}
case 0x83: // sint16
case 0x84: // uint16
if (f->size == 2) {
return fit_getuint16();
} else { // ignore array data
for (i = 0; i < f->size; i++) {
fit_getuint8();
}
if (global_opts.debug_level >= 8) {
debug_print(8, "%s: fit_read_field: skipping 2-byte array data\n", MYNAME);
}
return -1;
}
case 0x85: // sint32
case 0x86: // uint32
if (f->size == 4) {
return fit_getuint32();
} else { // ignore array data
for (i = 0; i < f->size; i++) {
fit_getuint8();
}
if (global_opts.debug_level >= 8) {
debug_print(8, "%s: fit_read_field: skipping 4-byte array data\n", MYNAME);
}
return -1;
}
default: // Ignore everything else for now.
for (i = 0; i < f->size; i++) {
fit_getuint8();
}
if (global_opts.debug_level >= 8) {
debug_print(8, "%s: fit_read_field: skipping unrecognized data type\n", MYNAME);
}
return -1;
}
}
static void
fit_parse_data(fit_message_def* def, int time_offset)
{
uint32_t timestamp = fit_data.last_timestamp + time_offset;
int32_t lat = 0x7fffffff;
int32_t lon = 0x7fffffff;
uint16_t alt = 0xffff;
uint16_t speed = 0xffff;
uint8_t heartrate = 0xff;
uint8_t cadence = 0xff;
uint16_t power = 0xffff;
int8_t temperature = 0x7f;
Waypoint* waypt;
int32_t startlat = 0x7fffffff;
int32_t startlon = 0x7fffffff;
int32_t endlat = 0x7fffffff;
int32_t endlon = 0x7fffffff;
uint32_t starttime = 0; // ??? default ?
uint8_t event = 0xff;
uint8_t eventtype = 0xff;
char cbuf[10];
Waypoint* lappt; // WptPt in gpx
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data ID %d with num_fields=%d\n", MYNAME, def->global_id, def->num_fields);
}
for (int i = 0; i < def->num_fields; i++) {
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing field %d\n", MYNAME, i);
}
fit_field_t* f = &def->fields[i];
uint32_t val = fit_read_field(f);
if (f->id == kFieldTimestamp) {
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: timestamp=%d\n", MYNAME, val);
}
timestamp = val;
// if the timestamp is < 0x10000000, this value represents
// system time; to convert it to UTC, add the global utc offset to it
if (timestamp < 0x10000000)
timestamp += fit_data.global_utc_offset;
fit_data.last_timestamp = timestamp;
} else {
switch (def->global_id) {
case kIdDeviceSettings: // device settings message
switch (f->id) {
case kFieldGlobalUtcOffset:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: global utc_offset=%d\n", MYNAME, val);
}
fit_data.global_utc_offset = val;
break;
default:
if (global_opts.debug_level >= 1) {
debug_print(1, "%s: unrecognized data type in GARMIN FIT device settings: f->id=%d\n", MYNAME, f->id);
}
break;
} // switch (f->id)
// end of case def->global_id = kIdDeviceSettings
break;
case kIdRecord: // record message - trkType is a track
switch (f->id) {
case kFieldLatitude:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: lat=%d\n", MYNAME, val);
}
lat = val;
break;
case kFieldLongitude:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: lon=%d\n", MYNAME, val);
}
lon = val;
break;
case kFieldAltitude:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: alt=%d\n", MYNAME, val);
}
if (val != 0xffff) {
alt = val;
}
break;
case kFieldHeartRate:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: heartrate=%d\n", MYNAME, val);
}
heartrate = val;
break;
case kFieldCadence:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: cadence=%d\n", MYNAME, val);
}
cadence = val;
break;
case kFieldDistance:
// NOTE: 5 is DISTANCE in cm ... unused.
if (global_opts.debug_level >= 7) {
debug_print(7, "%s: unrecognized data type in GARMIN FIT record: f->id=%d\n", MYNAME, f->id);
}
break;
case kFieldSpeed:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: speed=%d\n", MYNAME, val);
}
if (val != 0xffff) {
speed = val;
}
break;
case kFieldPower:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: power=%d\n", MYNAME, val);
}
power = val;
break;
case kFieldTemperature:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: temperature=%d\n", MYNAME, val);
}
temperature = val;
break;
case kFieldEnhancedSpeed:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: enhanced_speed=%d\n", MYNAME, val);
}
if (val != 0xffff) {
speed = val;
}
break;
case kFieldEnhancedAltitude:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: enhanced_altitude=%d\n", MYNAME, val);
}
if (val != 0xffff) {
alt = val;
}
break;
default:
if (global_opts.debug_level >= 1) {
debug_print(1, "%s: unrecognized data type in GARMIN FIT record: f->id=%d\n", MYNAME, f->id);
}
break;
} // switch (f->id)
// end of case def->global_id = kIdRecord
break;
case kIdLap: // lap wptType , endlat+lon is wpt
switch (f->id) {
case kFieldStartTime:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: starttime=%d\n", MYNAME, val);
}
starttime = val;
break;
case kFieldStartLatitude:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: startlat=%d\n", MYNAME, val);
}
startlat = val;
break;
case kFieldStartLongitude:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: startlon=%d\n", MYNAME, val);
}
startlon = val;
break;
case kFieldEndLatitude:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: endlat=%d\n", MYNAME, val);
}
endlat = val;
break;
case kFieldEndLongitude:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: endlon=%d\n", MYNAME, val);
}
endlon = val;
break;
case kFieldElapsedTime:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: elapsedtime=%d\n", MYNAME, val);
}
//elapsedtime = val;
break;
case kFieldTotalDistance:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: totaldistance=%d\n", MYNAME, val);
}
//totaldistance = val;
break;
default:
if (global_opts.debug_level >= 1) {
debug_print(1, "%s: unrecognized data type in GARMIN FIT lap: f->id=%d\n", MYNAME, f->id);
}
break;
} // switch (f->id)
// end of case def->global_id = kIdLap
break;
case kIdEvent:
switch (f->id) {
case kFieldEvent:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: event=%d\n", MYNAME, val);
}
event = val;
break;
case kFieldEventType:
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: parsing fit data: eventtype=%d\n", MYNAME, val);
}
eventtype = val;
break;
} // switch (f->id)
// end of case def->global_id = kIdEvent
break;
default:
if (global_opts.debug_level >= 1) {
debug_print(1, "%s: unrecognized/unhandled global ID for GARMIN FIT: %d\n", MYNAME, def->global_id);
}
break;
} // switch (def->global_id)
}
}
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: storing fit data with num_fields=%d\n", MYNAME, def->num_fields);
}
switch (def->global_id) {
case kIdLap: // lap message
if (endlat == 0x7fffffff || endlon == 0x7fffffff) {
break;
}
if (global_opts.debug_level >= 7) {
debug_print(7,"%s: storing fit data LAP %d\n", MYNAME, def->global_id);
}
lappt = new Waypoint;
lappt->latitude = GPS_Math_Semi_To_Deg(endlat);
lappt->longitude = GPS_Math_Semi_To_Deg(endlon);
lap_ct++;
snprintf(cbuf, sizeof(cbuf), "LAP%03d", lap_ct);
lappt->shortname = cbuf;
waypt_add(lappt);
break;
case kIdRecord: // record message
if ((lat == 0x7fffffff || lon == 0x7fffffff) && !opt_allpoints) {
break;
}
waypt = new Waypoint;
if (lat != 0x7fffffff) {
waypt->latitude = GPS_Math_Semi_To_Deg(lat);
}
if (lon != 0x7fffffff) {
waypt->longitude = GPS_Math_Semi_To_Deg(lon);
}
if (alt != 0xffff) {
waypt->altitude = (alt / 5.0) - 500;
}
waypt->SetCreationTime(QDateTime::fromTime_t(GPS_Math_Gtime_To_Utime(timestamp)));
if (speed != 0xffff) {
WAYPT_SET(waypt, speed, speed / 1000.0f);
}
if (heartrate != 0xff) {
waypt->heartrate = heartrate;
}
if (cadence != 0xff) {
waypt->cadence = cadence;
}
if (power != 0xffff) {
waypt->power = power;
}
if (temperature != 0x7f) {
WAYPT_SET(waypt, temperature, temperature);
}
if (new_trkseg) {
waypt->wpt_flags.new_trkseg = 1;
new_trkseg = false;
}
track_add_wpt(fit_data.track, waypt);
break;
case kIdEvent: // event message
if (event == kEnumEventTimer && eventtype == kEnumEventTypeStart) {
// Start event, start new track segment. Note: We don't do this
// on stop events because some GPS devices seem to generate a last
// trackpoint after the stop event and that would erroneously get
// assigned to the next segment.
new_trkseg = true;
}
break;
}
}
static void
fit_parse_data_message(uint8_t header)
{
int local_id = header & 0x1f;
fit_message_def* def = &fit_data.message_def[local_id];
fit_parse_data(def, 0);
}
static void
fit_parse_compressed_message(uint8_t header)
{
int local_id = (header >> 5) & 3;
fit_message_def* def = &fit_data.message_def[local_id];
fit_parse_data(def, header & 0x1f);
}
/*******************************************************************************
* fit_parse_record- parse each record in the file
*******************************************************************************/
static void
fit_parse_record()
{
uint8_t header = fit_getuint8();
// high bit 7 set -> compressed message (0 for normal)
// second bit 6 set -> 0 for data message, 1 for definition message
// bit 5 -> message type specific
// definition message: Bit set means that we have additional Developer Field definitions
// behind the field definitions inside the record content
// data message: currently not used
// bit 4 -> reserved
// bits 3..0 -> local message type
if (header & 0x80) {
if (global_opts.debug_level >= 6) {
debug_print(6,"%s: got compressed message at fit_data.len=%d", MYNAME, fit_data.len);
debug_print(0," ...local message type 0x%X\n", header&0x0f);
}
fit_parse_compressed_message(header);
} else if (header & 0x40) {
if (global_opts.debug_level >= 6) {
debug_print(6,"%s: got definition message at fit_data.len=%d", MYNAME, fit_data.len);
debug_print(0," ...local message type 0x%X\n", header&0x0f);
}
fit_parse_definition_message(header);
} else {
if (global_opts.debug_level >= 6) {
debug_print(6,"%s: got data message at fit_data.len=%d", MYNAME, fit_data.len);
debug_print(0," ...local message type 0x%X\n", header&0x0f);
}
fit_parse_data_message(header);
}
}
/*******************************************************************************
* fit_read- global entry point
* - parse the header
* - parse all the records in the file
*******************************************************************************/
static void
fit_read()
{
fit_parse_header();
fit_data.track = route_head_alloc();
track_add_head(fit_data.track);
if (global_opts.debug_level >= 1) {
debug_print(1,"%s: starting to read data with fit_data.len=%d\n", MYNAME, fit_data.len);
}
while (fit_data.len) {
fit_parse_record();
}
}
/*******************************************************************************
* FIT writing
*******************************************************************************/
const static std::vector<fit_field_t> fit_msg_fields_file_id = {
// field id, size, type
{ kFieldType, 0x01, kTypeEnum },
{ kFieldManufacturer, 0x02, kTypeUint16 },
{ kFieldProduct, 0x02, kTypeUint16 },
{ kFieldTimeCreated, 0x04, kTypeUint32 },
};
const static std::vector<fit_field_t> fit_msg_fields_course = {
{ kFieldName, 0x10, kTypeString },
{ kFieldSport, 0x01, kTypeEnum },
};
const static std::vector<fit_field_t> fit_msg_fields_lap = {
{ kFieldTimestamp, 0x04, kTypeUint32 },
{ kFieldStartTime, 0x04, kTypeUint32 },
{ kFieldStartLatitude, 0x04, kTypeSint32 },
{ kFieldStartLongitude, 0x04, kTypeSint32 },
{ kFieldEndLatitude, 0x04, kTypeSint32 },
{ kFieldEndLongitude, 0x04, kTypeSint32 },
{ kFieldElapsedTime, 0x04, kTypeUint32 },
{ kFieldTotalTimerTime, 0x04, kTypeUint32 },
{ kFieldTotalDistance, 0x04, kTypeUint32 },
{ kFieldAvgSpeed, 0x02, kTypeUint16 },
{ kFieldMaxSpeed, 0x02, kTypeUint16 },
};
const static std::vector<fit_field_t> fit_msg_fields_event = {
{ kFieldTimestamp, 0x04, kTypeUint32 },
{ kFieldEvent, 0x01, kTypeEnum },
{ kFieldEventType, 0x01, kTypeEnum },
{ kFieldEventGroup, 0x01, kTypeUint8 },
};
const static std::vector<fit_field_t> fit_msg_fields_course_point = {
{ kFieldCPTimeStamp, 0x04, kTypeUint32 },
{ kFieldCPPositionLat, 0x04, kTypeSint32 },
{ kFieldCPPositionLong, 0x04, kTypeSint32 },
{ kFieldCPDistance, 0x04, kTypeUint32 },
{ kFieldCPName, 0x10, kTypeString },
{ kFieldCPType, 0x01, kTypeEnum },
};
const static std::vector<fit_field_t> fit_msg_fields_record = {
{ kFieldTimestamp, 0x04, kTypeUint32 },
{ kFieldLatitude, 0x04, kTypeSint32 },
{ kFieldLongitude, 0x04, kTypeSint32 },
{ kFieldDistance, 0x04, kTypeUint32 },
{ kFieldAltitude, 0x02, kTypeUint16 },
{ kFieldSpeed, 0x02, kTypeUint16 },
};
static void
fit_write_message_def(uint8_t local_id, uint16_t global_id, const std::vector<fit_field_t> &fields) {
gbfputc(0x40 | local_id, fout); // Local ID
gbfputc(0, fout); // Reserved
gbfputc(0, fout); // Little endian
gbfputuint16(global_id, fout); // Global ID
gbfputc(fields.size(), fout); // Number of fields
for (auto &&field : fields) {
gbfputc(field.id, fout); // Field definition number
gbfputc(field.size, fout); // Field size in bytes
gbfputc(field.type, fout); // Field type
}
}
static uint16_t
fit_crc16(uint8_t data, uint16_t crc) {
static const uint16_t crc_table[] = {
0x0000, 0xcc01, 0xd801, 0x1400, 0xf001, 0x3c00, 0x2800, 0xe401,
0xa001, 0x6c00, 0x7800, 0xb401, 0x5000, 0x9c01, 0x8801, 0x4400
};
crc = (crc >> 4) ^ crc_table[crc & 0xf] ^ crc_table[data & 0xf];
crc = (crc >> 4) ^ crc_table[crc & 0xf] ^ crc_table[(data >> 4) & 0xf];
return crc;
}
static void
fit_write_timestamp(const gpsbabel::DateTime &t) {
uint32_t t_fit;
if (t.isValid() && t.toTime_t() >= (unsigned int)GPS_Math_Gtime_To_Utime(0)) {
t_fit = GPS_Math_Utime_To_Gtime(t.toTime_t());
} else {
t_fit = 0xffffffff;
}
gbfputuint32(t_fit, fout);
}
static void
fit_write_fixed_string(const QString &s, unsigned int len) {
QString trimmed(s);
QByteArray u8buf;
// Truncate if too long, making sure not to chop in the middle of a UTF-8
// character (i.e. we chop the unicode string and then check whether its
// UTF-8 representation fits)
while (true) {
u8buf = trimmed.toUtf8();
if (static_cast<unsigned int>(u8buf.size()) < len) {
break;
}
trimmed.chop(1);
}
// If the string was too short initially or we had to chop multibyte
// characters, the UTF-8 representation might be too short now, so pad
// it.
u8buf.append(len - u8buf.size(), '\0');
gbfwrite(u8buf.data(), len, 1, fout);
}