Android Crashes When Changing Audio Output #683

cdigit · 2023-06-04T14:20:58Z

cdigit
Jun 4, 2023

With the audio engine running, unplugging or plugging in headphones on Android devices causes miniaudio to crash. I think that Android sends a message when audio sources change: https://developer.android.com/reference/android/media/AudioManager#ACTION_AUDIO_BECOMING_NOISY, but that's using the Java-based audioManager.

As seen in the logs below, miniaudio crashes because an assertion has failed, I guess the pInputChache ends up pointing to an invalid memory location:

F/libc (11945): ../src/miniaudio.h:18279: ma_result ma_device__handle_duplex_callback_playback(ma_device *, ma_uint32, void *, ma_pcm_rb *): assertion "pDevice->playback.pInputCache != ((void*)0)" failed

Is there a best practice in dealing with this on Android AAudio? On iOS, this problem does not occur.

Plugging in:

W/AudioRecord(11945): dead IAudioRecord, creating a new one from obtainBuffer()
D/AudioStreamLegacy(11945): onAudioDeviceUpdate() deviceId 38
D/AudioStreamLegacy(11945): onAudioDeviceUpdate() request DISCONNECT in data callback due to device change
D/AudioStreamLegacy(11945): checkForDisconnectRequest() mRequestDisconnect acknowledged
D/miniaudio(11945): INFO: [AAudio] ERROR CALLBACK: error=-899, AAudioStream_getState()=13
W/AudioStreamLegacy(11945): processCallbackCommon() data, stream disconnected
E/AudioRecord(11945): EVENT_MORE_DATA requested 4096 bytes but callback returned -1 bytes
D/AAudio  (11945): AAudioStream_close(0x71de0f9080) called ---------------
D/AudioStreamLegacy(11945): onAudioDeviceUpdate() deviceId 37
D/AudioStreamLegacy(11945): onAudioDeviceUpdate() request DISCONNECT in data callback due to device change
D/AudioStreamLegacy(11945): checkForDisconnectRequest() mRequestDisconnect acknowledged
D/miniaudio(11945): INFO: [AAudio] ERROR CALLBACK: error=-899, AAudioStream_getState()=13
W/AudioStreamLegacy(11945): processCallbackCommon() data, stream disconnected
E/AudioTrack(11945): EVENT_MORE_DATA requested 1536 bytes but callback returned -1 bytes
D/AAudioStream(11945): destroying 0x71de0f9080, state = AAUDIO_STREAM_STATE_CLOSED
D/        (11945): PlayerBase::~PlayerBase()
D/AAudio  (11945): AAudioStream_close(0x71de0f9080) returned 0 ---------
D/AAudio  (11945): AAudioStreamBuilder_openStream() called ----------------------------------------
D/        (11945): PlayerBase::PlayerBase()
I/AAudioStream(11945): open() rate   = 48000, channels    = 2, format   = 2, sharing = SH, dir = INPUT
I/AAudioStream(11945): open() device = 0, sessionId   = 0, perfMode = 12, callback: ON with frames = 512
I/AAudioStream(11945): open() usage  = 1, contentType = 2, inputPreset = 6
D/AudioStreamRecord(11945): open() used a different device format but no FAST path, reopen
W/AudioStreamRecord(11945): open() flags changed from 0x00000005 to 0x00000000
W/AudioStreamRecord(11945): open() perfMode changed from 12 to 10
D/AAudio  (11945): AAudioStreamBuilder_openStream() returns 0 = AAUDIO_OK for (0x71de0f9080) ----------------
D/AAudio  (11945): AAudioStream_requestStart(0x71de0f9080) called --------------
D/        (11945): PlayerBase::start() from IPlayer
D/AAudio  (11945): AAudioStream_requestStart(0x71de0f9080) returned 0 ---------
D/AudioStreamLegacy(11945): onAudioDeviceUpdate() deviceId 38
D/AAudio  (11945): AAudioStream_requestStart(0x71c224a400) called --------------
D/        (11945): PlayerBase::start() from IPlayer
W/        (11945): PlayerBase::start() error -38
D/AAudio  (11945): AAudioStream_requestStart(0x71c224a400) returned -895 ---------
D/AAudio  (11945): AAudioStream_requestStop(0x71de0f9080)
D/        (11945): PlayerBase::stop() from IPlayer
I/ACodec  (11945): [OMX.google.aac.decoder] signalFlush
I/ACodec  (11945): [OMX.google.aac.decoder] ExecutingState flushing now (codec owns 0/4 input, 2/4 output).
I/ACodec  (11945): [OMX.google.aac.decoder] Now Flushing
I/ACodec  (11945): [OMX.google.aac.decoder] FlushingState onOMXEvent(0,1,0)
I/ACodec  (11945): [OMX.google.aac.decoder] FlushingState onOMXEvent(0,1,1)
I/ACodec  (11945): [OMX.google.aac.decoder] Now Executing
D/AAudio  (11945): AAudioStream_close(0x71c224a400) called ---------------
D/AudioTrack(11945): stop() called with 1268736 frames delivered
D/AAudioStream(11945): destroying 0x71c224a400, state = AAUDIO_STREAM_STATE_CLOSED
D/AAudio  (11945): AAudioStream_close(0x71c224a400) returned 0 ---------
D/AAudio  (11945): AAudioStreamBuilder_openStream() called ----------------------------------------
D/        (11945): PlayerBase::PlayerBase()
I/AAudioStream(11945): open() rate   = 48000, channels    = 2, format   = 2, sharing = SH, dir = OUTPUT
I/AAudioStream(11945): open() device = 0, sessionId   = 0, perfMode = 12, callback: ON with frames = 512
I/AAudioStream(11945): open() usage  = 1, contentType = 2, inputPreset = 6
D/AudioStreamTrack(11945): open(), request notificationFrames = 512, frameCount = 512
I/AudioTrack(11945): AUDIO_OUTPUT_FLAG_FAST successful; frameCount 512 -> 512
W/AudioStreamTrack(11945): open() flags changed from 0x00000104 to 0x00100104
D/AAudio  (11945): AAudioStreamBuilder_openStream() returns 0 = AAUDIO_OK for (0x71c224a400) ----------------
D/AAudio  (11945): AAudioStream_requestStart(0x71de0f9080) called --------------
D/        (11945): PlayerBase::start() from IPlayer
D/AAudio  (11945): AAudioStream_requestStart(0x71de0f9080) returned 0 ---------
D/AAudio  (11945): AAudioStream_requestStart(0x71c224a400) called --------------
D/        (11945): PlayerBase::start() from IPlayer
D/AAudio  (11945): AAudioStream_requestStart(0x71c224a400) returned 0 ---------
F/libc    (11945): /Users/admin/Documents/dev/myapp/src/miniaudio.h:18279: ma_result ma_device__handle_duplex_callback_playback(ma_device *, ma_uint32, void *, ma_pcm_rb *): assertion "pDevice->playback.pInputCache != ((void*)0)" failed
F/libc    (11945): Fatal signal 6 (SIGABRT), code -6 (SI_TKILL) in tid 12466 (AudioTrack), pid 11945 (example.myapp)
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Build fingerprint: 'samsung/dreamqlteue/dreamqlteue:9/PPR1.180610.011/G950U1UEU8DVD4:user/release-keys'
Revision: '12'
ABI: 'arm64'
pid: 11945, tid: 12466, name: AudioTrack  >>> com.example.myapp <<<
signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
Abort message: '/Users/admin/Documents/dev/myapp/src/miniaudio.h:18279: ma_result ma_device__handle_duplex_callback_playback(ma_device *, ma_uint32, void *, ma_pcm_rb *): assertion "pDevice->playback.pInputCache != ((void*)0)" failed'
    x0  0000000000000000  x1  00000000000030b2  x2  0000000000000006  x3  0000000000000008
    x4  0000000000000000  x5  0000000000000000  x6  0000000000000000  x7  0000000000000020
    x8  0000000000000083  x9  ce8bf5bd997d4d48  x10 0000000000000000  x11 fffffffc7ffffbdf
    x12 0000000000000001  x13 00000000647c9281  x14 0013f7b15083f600  x15 00008021837f2e12
    x16 00000072640b02a0  x17 0000007263fd0f24  x18 0000000000000010  x19 0000000000002ea9
    x20 00000000000030b2  x21 00000071b7563000  x22 00000071b14cdc94  x23 0000000820810411
    x24 00000071da6ab2e0  x25 00000071da6a014c  x26 00000071da6ab2e0  x27 00000071da6a19f1
    x28 00000071da6af950  x29 00000071ae1e5fc0
    sp  00000071ae1e5f80  lr  0000007263fc3304  pc  0000007263fc332c
backtrace:
    #00 pc 000000000002232c  /system/lib64/libc.so (abort+116)
    #01 pc 0000000000022a34  /system/lib64/libc.so (__assert2+52)
    #02 pc 0000000000048c4c  /data/app/com.example.myapp-QONznY4_iiWx-me7642M_g==/base.apk (offset 0xbb6000)
    #03 pc 00000000000487c0  /data/app/com.example.myapp-QONznY4_iiWx-me7642M_g==/base.apk (offset 0xbb6000) (ma_device_handle_backend_data_callback+152)
    #04 pc 00000000000adcf4  /data/app/com.example.myapp-QONznY4_iiWx-me7642M_g==/base.apk (offset 0xbb6000)
    #05 pc 000000000002873c  /system/lib64/libaaudio.so (aaudio::AudioStream::maybeCallDataCallback(void*, int)+220)
    #06 pc 000000000002f464  /system/lib64/libaaudio.so (aaudio::AudioStreamLegacy::callDataCallbackFrames(unsigned char*, int)+328)
    #07 pc 0000000000039ebc  /system/lib64/libaaudio.so (FixedBlockReader::processVariableBlock(unsigned char*, int)+296)
    #08 pc 000000000002fb08  /system/lib64/libaaudio.so (aaudio::AudioStreamLegacy::processCallbackCommon(int, void*)+724)
    #09 pc 000000000007cb8c  /system/lib64/libaudioclient.so (android::AudioTrack::processAudioBuffer()+3996)
    #10 pc 000000000007b8e0  /system/lib64/libaudioclient.so (android::AudioTrack::AudioTrackThread::threadLoop()+252)
    #11 pc 00000000000100ec  /system/lib64/libutils.so (android::Thread::_threadLoop(void*)+180)
    #12 pc 0000000000091a14  /system/lib64/libc.so (__pthread_start(void*)+36)
    #13 pc 0000000000023f78  /system/lib64/libc.so (__start_thread+68)
Lost connection to device.
Exited

Unplugging

W/AudioRecord(12886): dead IAudioRecord, creating a new one from processAudioBuffer()
D/AudioStreamLegacy(12886): onAudioDeviceUpdate() deviceId 3
D/AudioStreamLegacy(12886): onAudioDeviceUpdate() request DISCONNECT in data callback due to device change
D/AudioStreamLegacy(12886): checkForDisconnectRequest() mRequestDisconnect acknowledged
D/miniaudio(12886): INFO: [AAudio] ERROR CALLBACK: error=-899, AAudioStream_getState()=13
W/AudioStreamLegacy(12886): processCallbackCommon() data, stream disconnected
E/AudioTrack(12886): EVENT_MORE_DATA requested 1536 bytes but callback returned -1 bytes
D/AAudio  (12886): AAudioStream_close(0x71d5731180) called ---------------
D/AudioTrack(12886): stop() called with 947136 frames delivered
D/AAudioStream(12886): destroying 0x71d5731180, state = AAUDIO_STREAM_STATE_CLOSED
D/AAudio  (12886): AAudioStream_close(0x71d5731180) returned 0 ---------
D/AAudio  (12886): AAudioStreamBuilder_openStream() called ----------------------------------------
D/        (12886): PlayerBase::PlayerBase()
I/AAudioStream(12886): open() rate   = 48000, channels    = 2, format   = 2, sharing = SH, dir = OUTPUT
I/AAudioStream(12886): open() device = 0, sessionId   = 0, perfMode = 12, callback: ON with frames = 512
I/AAudioStream(12886): open() usage  = 1, contentType = 2, inputPreset = 6
D/AudioStreamTrack(12886): open(), request notificationFrames = 512, frameCount = 512
I/AudioTrack(12886): AUDIO_OUTPUT_FLAG_FAST successful; frameCount 512 -> 512
W/AudioStreamTrack(12886): open() flags changed from 0x00000104 to 0x00100104
D/AAudio  (12886): AAudioStreamBuilder_openStream() returns 0 = AAUDIO_OK for (0x71d5731180) ----------------
D/AAudio  (12886): AAudioStream_requestStart(0x71b2e99880) called --------------
D/        (12886): PlayerBase::start() from IPlayer
D/AudioStreamLegacy(12886): processCallbackCommon() stream disconnected
D/AAudio  (12886): AAudioStream_requestStart(0x71b2e99880) returned 0 ---------
D/miniaudio(12886): INFO: [AAudio] ERROR CALLBACK: error=-899, AAudioStream_getState()=13
D/AAudio  (12886): AAudioStream_close(0x71b2e99880) called ---------------
D/AAudioStream(12886): destroying 0x71b2e99880, state = AAUDIO_STREAM_STATE_CLOSED
D/        (12886): PlayerBase::~PlayerBase()
D/AAudio  (12886): AAudioStream_close(0x71b2e99880) returned 0 ---------
D/AAudio  (12886): AAudioStreamBuilder_openStream() called ----------------------------------------
D/        (12886): PlayerBase::PlayerBase()
I/AAudioStream(12886): open() rate   = 48000, channels    = 2, format   = 2, sharing = SH, dir = INPUT
I/AAudioStream(12886): open() device = 0, sessionId   = 0, perfMode = 12, callback: ON with frames = 512
I/AAudioStream(12886): open() usage  = 1, contentType = 2, inputPreset = 6
I/System.out(12886): (HTTPLog)-Static: isSBSettingEnabled false
I/System.out(12886): (HTTPLog)-Static: isSBSettingEnabled false
D/AudioStreamRecord(12886): open() used a different device format but no FAST path, reopen
W/AudioStreamRecord(12886): open() flags changed from 0x00000005 to 0x00000000
W/AudioStreamRecord(12886): open() perfMode changed from 12 to 10
D/AAudio  (12886): AAudioStreamBuilder_openStream() returns 0 = AAUDIO_OK for (0x71b2e99880) ----------------
D/AAudio  (12886): AAudioStream_requestStart(0x71b2e99880) called --------------
D/        (12886): PlayerBase::start() from IPlayer
D/AAudio  (12886): AAudioStream_requestStart(0x71b2e99880) returned 0 ---------
D/AudioStreamLegacy(12886): onAudioDeviceUpdate() deviceId 10
D/AAudio  (12886): AAudioStream_requestStart(0x71d5731180) called --------------
D/        (12886): PlayerBase::start() from IPlayer
D/AAudio  (12886): AAudioStream_requestStart(0x71d5731180) returned 0 ---------
F/libc    (12886): /Users/admin/Documents/dev/myapp/src/miniaudio.h:18279: ma_result ma_device__handle_duplex_callback_playback(ma_device *, ma_uint32, void *, ma_pcm_rb *): assertion "pDevice->playback.pInputCache != ((void*)0)" failed
F/libc    (12886): Fatal signal 6 (SIGABRT), code -6 (SI_TKILL) in tid 13079 (AudioTrack), pid 12886 (example.myapp)
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Build fingerprint: 'samsung/dreamqlteue/dreamqlteue:9/PPR1.180610.011/G950U1UEU8DVD4:user/release-keys'
Revision: '12'
ABI: 'arm64'
pid: 12886, tid: 13079, name: AudioTrack  >>> com.example.myapp <<<
signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
Abort message: '/Users/admin/Documents/dev/myapp/src/miniaudio.h:18279: ma_result ma_device__handle_duplex_callback_playback(ma_device *, ma_uint32, void *, ma_pcm_rb *): assertion "pDevice->playback.pInputCache != ((void*)0)" failed'
    x0  0000000000000000  x1  0000000000003317  x2  0000000000000006  x3  0000000000000008
    x4  0000000000000000  x5  0000000000000000  x6  0000000000000000  x7  0000000000000020
    x8  0000000000000083  x9  ce8bf5bd997d4d48  x10 0000000000000000  x11 fffffffc7ffffbdf
    x12 0000000000000001  x13 00000000647c940a  x14 002b369e3a72f800  x15 00006280e0d4b3f2
    x16 00000072640b02a0  x17 0000007263fd0f24  x18 0000000000000010  x19 0000000000003256
    x20 0000000000003317  x21 00000071bae57000  x22 00000071b18dfc94  x23 0000000820810411
    x24 00000071da6ab2e0  x25 00000071da6a014c  x26 00000071da6ab2e0  x27 00000071da6a19f1
    x28 00000071da6af950  x29 00000071aecfdfc0
    sp  00000071aecfdf80  lr  0000007263fc3304  pc  0000007263fc332c
backtrace:
    #00 pc 000000000002232c  /system/lib64/libc.so (abort+116)
    #01 pc 0000000000022a34  /system/lib64/libc.so (__assert2+52)
    #02 pc 0000000000048c4c  /data/app/com.example.myapp-QONznY4_iiWx-me7642M_g==/base.apk (offset 0xbb6000)
    #03 pc 00000000000487c0  /data/app/com.example.myapp-QONznY4_iiWx-me7642M_g==/base.apk (offset 0xbb6000) (ma_device_handle_backend_data_callback+152)
    #04 pc 00000000000adcf4  /data/app/com.example.myapp-QONznY4_iiWx-me7642M_g==/base.apk (offset 0xbb6000)
    #05 pc 000000000002873c  /system/lib64/libaaudio.so (aaudio::AudioStream::maybeCallDataCallback(void*, int)+220)
    #06 pc 000000000002f464  /system/lib64/libaaudio.so (aaudio::AudioStreamLegacy::callDataCallbackFrames(unsigned char*, int)+328)
    #07 pc 0000000000039ebc  /system/lib64/libaaudio.so (FixedBlockReader::processVariableBlock(unsigned char*, int)+296)
    #08 pc 000000000002fb08  /system/lib64/libaaudio.so (aaudio::AudioStreamLegacy::processCallbackCommon(int, void*)+724)
    #09 pc 000000000007cb8c  /system/lib64/libaudioclient.so (android::AudioTrack::processAudioBuffer()+3996)
    #10 pc 000000000007b8e0  /system/lib64/libaudioclient.so (android::AudioTrack::AudioTrackThread::threadLoop()+252)
    #11 pc 00000000000100ec  /system/lib64/libutils.so (android::Thread::_threadLoop(void*)+180)
    #12 pc 0000000000091a14  /system/lib64/libc.so (__pthread_start(void*)+36)
    #13 pc 0000000000023f78  /system/lib64/libc.so (__start_thread+68)
Lost connection to device.
Exited

mackron · 2023-06-04T22:10:51Z

mackron
Jun 4, 2023
Maintainer

What version of miniaudio are you using at the moment? I am so sure I fixed that assert. Maybe there's still an edge case there that I missed... If you're not using the latest version, can you update and try again?

1 reply

cdigit Jun 5, 2023
Author

miniaudio - v0.11.11 - 2022-11-04
This is the version I used when I first caught wind of miniaudio back in January of this year. I will try the latest and post an update.

cdigit · 2023-06-05T01:28:26Z

cdigit
Jun 5, 2023
Author

I can confirm that the latest version v0.11.17 - 2023-05-27, no longer crashes on Android when unplugging or plugging in headphones; however, with this latest version the timing is way off, whereas before the timing was solid. In my app I can record sounds and encode them to disk along a timeline and play them back immediately afterwards. With this new version, they don't play back on time, there seems to be a multi-millisecond delay, at least with this particular Android phone. In my app, I'm using full duplex, I have list of sound objects and use the current engine time at the time of recording to determine when a sound is to be played back.

I understand this is vague description of a problem, but was there anything updated around ma_engine_set_time() or ma_sound_seek_to_pcm_frame() or something that could effect my use case? No one else is talking about this problem, so this makes it more difficult. This is a hard pill to swallow since I've been working tirelessly for months successfully using that older miniaudio version and now with the latest version, there is a timing problem for me. I'll test on a few more devices to see if it is consistent and try to get some working code available where both versions can be tested.

2 replies

mackron Jun 5, 2023
Maintainer

I haven't made any changes there in recent times, nor with the Android backends. ma_engine_set_time() is just a simple setter, and seeking hasn't changed in ages. Need more information. When you say the timing is off, do you mean it feels like there's some latency? Can you enable debug output (#define MA_DEBUG_OUTPUT) and post the log? That'll show how big of a buffer you're using.

cdigit Jun 5, 2023
Author

Alright, I will post the debug output.
I just tested on all of my physical devices. I've been testing all of them everyday, multiple times, to make sure they all had rock solid timing. Yes, when I say timing I mean latency. Recorded sound is supposed to play on beat with a backing track, but it's no longer playing on time. This is how the devices are performing now in terms of bad timing vs good timing:

iPhone 6s - iOS 14.7.1 -      Solid Timing
Pixel 3 XL - Android 10 -     Solid Timing 
Pixel 3a  - Android 12  -     Solid Timing
Galaxy A10s - Android 11 -    Bad Timing
Galaxy S8 - Android 9 -       Bad Timing

The only thing in common with the bad so far is that they are Samsung devices ¯\_(ツ)_/¯.
I'm gonna have to make a miniaudioTester app like that OboeTester app and add a component to record and playback timing of multiple sounds. It's one way I can give back since I've been doing inspired work only because of miniaudio. And send you some devices, I remember a while back you mentioned you didn't have access to some devices. Anyway, let me take a breather, I've been going non-stop for the last week and weekend. And need some energy before trying to dive into this timing issue with the latest version. I'll be back with more details!

cdigit · 2023-06-05T02:53:37Z

cdigit
Jun 5, 2023
Author

Here's the debug output:

D/miniaudio(21678): DEBUG: WASAPI backend is disabled.
D/miniaudio(21678): DEBUG: DirectSound backend is disabled.
D/miniaudio(21678): DEBUG: WinMM backend is disabled.
D/miniaudio(21678): DEBUG: Core Audio backend is disabled.
D/miniaudio(21678): DEBUG: sndio backend is disabled.
D/miniaudio(21678): DEBUG: audio(4) backend is disabled.
D/miniaudio(21678): DEBUG: OSS backend is disabled.
D/miniaudio(21678): DEBUG: PulseAudio backend is disabled.
D/miniaudio(21678): DEBUG: ALSA backend is disabled.
D/miniaudio(21678): DEBUG: JACK backend is disabled.
D/miniaudio(21678): DEBUG: Attempting to initialize AAudio backend...
D/miniaudio(21678): DEBUG: Loading library: libaaudio.so
D/miniaudio(21678): DEBUG: Loading symbol: AAudio_createStreamBuilder
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_delete
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setDeviceId
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setDirection
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setSharingMode
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setFormat
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setChannelCount
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setSampleRate
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setBufferCapacityInFrames
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setFramesPerDataCallback
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setDataCallback
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setErrorCallback
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setPerformanceMode
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setUsage
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setContentType
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setInputPreset
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_setAllowedCapturePolicy
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStreamBuilder_openStream
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStream_close
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStream_getState
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStream_waitForStateChange
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStream_getFormat
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStream_getChannelCount
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStream_getSampleRate
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStream_getBufferCapacityInFrames
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStream_getFramesPerDataCallback
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStream_getFramesPerBurst
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStream_requestStart
D/miniaudio(21678): DEBUG: Loading symbol: AAudioStream_requestStop
D/miniaudio(21678): DEBUG: System Architecture:
D/miniaudio(21678): DEBUG:   Endian: LE
D/miniaudio(21678): DEBUG:   SSE2:   NO
D/miniaudio(21678): DEBUG:   AVX2:   NO
D/miniaudio(21678): DEBUG:   NEON:   YES
I/AAudio  (21678): AAudioStreamBuilder_openStream() called ----------------------------------------
I/AudioStreamBuilder(21678): rate   =      0, channels  = 2, format   = 5, sharing = SH, dir = INPUT
I/AudioStreamBuilder(21678): device =      0, sessionId = -1, perfMode = 12, callback: ON with frames = 0
I/AudioStreamBuilder(21678): usage  =      0, contentType = 0, inputPreset = 0, allowedCapturePolicy = 0
I/AudioStreamBuilder(21678): privacy sensitive = false
D/example.playap(21678): PlayerBase::PlayerBase()
I/AudioRecord(21678): createRecord_l(0): AUDIO_INPUT_FLAG_FAST successful; frameCount 0 -> 4096
W/AudioStreamRecord(21678): open() sampleRate changed from 0 to 48000
D/AudioStreamRecord(21678): open() setup I16>FLOAT conversion buffer with 240 frames
W/AudioStreamRecord(21678): open() flags changed from 0x00000005 to 0x00000001
D/AAudioStream(21678): setState(s#1) from 0 to 2
I/AAudio  (21678): AAudioStreamBuilder_openStream() returns 0 = AAUDIO_OK for s#1 ----------------
I/AAudio  (21678): AAudioStreamBuilder_openStream() called ----------------------------------------
I/AudioStreamBuilder(21678): rate   =      0, channels  = 2, format   = 5, sharing = SH, dir = OUTPUT
I/AudioStreamBuilder(21678): device =      0, sessionId = -1, perfMode = 12, callback: ON with frames = 0
I/AudioStreamBuilder(21678): usage  =      0, contentType = 0, inputPreset = 0, allowedCapturePolicy = 0
I/AudioStreamBuilder(21678): privacy sensitive = false
D/example.playap(21678): PlayerBase::PlayerBase()
D/AudioStreamTrack(21678): open(), request notificationFrames = -8, frameCount = 0
I/AudioTrack(21678): createTrack_l(-1402441705): AUDIO_OUTPUT_FLAG_FAST successful; frameCount 0 -> 2048
D/AudioTrack(21678): setVolume(1.000000, 1.000000) pid : 21678
W/AudioStreamTrack(21678): open() sampleRate changed from 0 to 48000
D/AAudioStream(21678): setState(s#2) from 0 to 2
W/AudioStreamTrack(21678): open() flags changed from 0x00000104 to 0x00000004
I/AAudio  (21678): AAudioStreamBuilder_openStream() returns 0 = AAUDIO_OK for s#2 ----------------
D/miniaudio(21678): INFO: [AAudio]
D/miniaudio(21678): INFO:   Default Playback Device (Capture)
D/miniaudio(21678): INFO:     Format:      32-bit IEEE Floating Point -> 32-bit IEEE Floating Point
D/miniaudio(21678): INFO:     Channels:    2 -> 2
D/miniaudio(21678): INFO:     Sample Rate: 48000 -> 48000
D/miniaudio(21678): INFO:     Buffer Size: 4096*1 (4096)
D/miniaudio(21678): INFO:     Conversion:
D/miniaudio(21678): INFO:       Pre Format Conversion:  NO
D/miniaudio(21678): INFO:       Post Format Conversion: NO
D/miniaudio(21678): INFO:       Channel Routing:        NO
D/miniaudio(21678): INFO:       Resampling:             NO
D/miniaudio(21678): INFO:       Passthrough:            YES
D/miniaudio(21678): INFO:       Channel Map In:         {CHANNEL_FRONT_LEFT CHANNEL_FRONT_RIGHT}
D/miniaudio(21678): INFO:       Channel Map Out:        {CHANNEL_FRONT_LEFT CHANNEL_FRONT_RIGHT}
D/miniaudio(21678): INFO:   Default Capture Device (Playback)
D/miniaudio(21678): INFO:     Format:      32-bit IEEE Floating Point -> 32-bit IEEE Floating Point
D/miniaudio(21678): INFO:     Channels:    2 -> 2
D/miniaudio(21678): INFO:     Sample Rate: 48000 -> 48000
D/miniaudio(21678): INFO:     Buffer Size: 2048*1 (2048)
D/miniaudio(21678): INFO:     Conversion:
D/miniaudio(21678): INFO:       Pre Format Conversion:  NO
D/miniaudio(21678): INFO:       Post Format Conversion: NO
D/miniaudio(21678): INFO:       Channel Routing:        NO
D/miniaudio(21678): INFO:       Resampling:             NO
D/miniaudio(21678): INFO:       Passthrough:            YES
D/miniaudio(21678): INFO:       Channel Map In:         {CHANNEL_FRONT_LEFT CHANNEL_FRONT_RIGHT}
D/miniaudio(21678): INFO:       Channel Map Out:        {CHANNEL_FRONT_LEFT CHANNEL_FRONT_RIGHT}
D/AAudio  (21678): AAudioStream_requestStart(s#1) called --------------
D/AAudioStream(21678): setState(s#1) from 2 to 3
D/example.playap(21678): PlayerBase::start() from IPlayer
D/AAudio  (21678): AAudioStream_requestStart(s#1) returned 0 ---------
D/AudioStreamLegacy(21678): onAudioDeviceUpdate() devId 35 => 35
D/AudioStreamLegacy(21678): onAudioDeviceUpdate() devId 35 => 35
D/AAudioStream(21678): setState(s#1) from 3 to 4
D/AAudioStream(21678): setState(s#1) from 3 to 4
D/AAudio  (21678): AAudioStream_requestStart(s#2) called --------------
D/AAudioStream(21678): setState(s#2) from 2 to 3
D/example.playap(21678): PlayerBase::start() from IPlayer
D/AAudio  (21678): AAudioStream_requestStart(s#2) returned 0 ---------
D/AudioStreamLegacy(21678): onAudioDeviceUpdate() devId 34 => 34
D/AAudioStream(21678): setState(s#2) from 3 to 4
I/flutter (21678): starting....

0 replies

cdigit · 2023-06-05T03:14:57Z

cdigit
Jun 5, 2023
Author

I just tested v0.11.12 and the same timing problem is there. This is the version where the output change crash issue was fixed so I can't even just stick to that version and have solid timing and no crashes when changing output.
https://github.com/mackron/miniaudio/blob/master/CHANGES.md#v01112---2023-03-19

On the Samsung A10s, I tested v0.11.12 and immediately after went back to v.0.11.11 and it's like night and day. v.0.11.11 has the solid playback timing.

13 replies

cdigit Jun 5, 2023
Author

Also, another thing to check. In your data callback, what is the value of the frameCount parameter?

I tried to print the frameCount in the callback, was expecting to get flooded with data, but didn't get anything. Will try again.

I forgot to use __android_log_print() and was running out the house to get to work. The frameCount in the callback is 512.

cdigit Jun 5, 2023
Author

```c
deviceConfig.periodSizeInMilliseconds = 10;

Using v0.11.17 and setting deviceConfig.periodSizeInMilliseconds = 10; May have helped a little, but the delay is still noticeable whereas when using v0.11.11, there is no delay at all.

mackron Jun 6, 2023
Maintainer

Thanks. So just confirming here. The dev branch is now consistent with 0.11.11 and the issue is resolved?

cdigit Jun 6, 2023
Author

Yes. The dev branch fixes the timing issue. Does this mean that that AAudio issue of crashing when setting the periodSize will occur if compatibility workarounds are disabled or the SDK version is >30?

mackron Jun 6, 2023
Maintainer

I believe so, yes. That's the annoying complication. I just don't know how to better handle that. I would need advice from the community on that one.

That's for confirming the timing fix. I'll get that released shortly.

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Android Crashes When Changing Audio Output #683

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