Tau: [BUG] Android audio playback Non-positive period

[tonypottera24]

Flutter Sound Version :

5.1.1

• Released or Beta version ?
  Released

• Version number ?
  flutter 1.17.5

• FULL or LITE flavor ?
  FULL and LITE

• Result of the command "flutter pub deps | grep flutter_sound"
  (very important)

FlutterSoundPlayer _flutterSoundPlayer = FlutterSoundPlayer();
await _flutterSoundPlayer.openAudioSession();
await _flutterSoundPlayer.startPlayer(
            fromURI: (await recording.audioFile).path);
_progressSubscription =
            _flutterSoundPlayer.onProgress.listen(_audioPlayerListener);

---

Severity

• Crash

---

Platforms you faced the error

• Android
• Real device
  

  Samsung S8

Logs

(This is very important. Most of the time we cannot do anything if we do not have information on your bug)

I/flutter (25448): FS:---> openAudioSession
D/AudioManager(25448): setBluetoothScoOn false
D/AudioManager(25448): setSpeakerphoneOn true
D/AudioManager(25448): setSpeakerphoneOn true
D/AudioManager(25448): setBluetoothScoOn true
I/flutter (25448): FS:<--- openAudioSession
I/flutter (25448): play
I/flutter (25448): FS:---> startPlayer
I/flutter (25448): FS:---> stop
I/flutter (25448): FS:<--- stop
I/flutter (25448): FS:---> _convert
I/flutter (25448): FS:---> needToConvert
I/flutter (25448): FS:<--- needToConvert
I/flutter (25448): FS:<--- _convert
I/MediaPlayer(25448): Need to enable context aware info
V/MediaPlayer-JNI(25448): native_setup
V/MediaPlayerNative(25448): constructor
V/MediaPlayerNative(25448): setListener
V/MediaPlayer-JNI(25448): setDataSourceFD: fd 93
V/MediaPlayerNative(25448): setDataSource(93, 0, 576460752303423487)
V/MediaPlayerNative(25448): setVideoSurfaceTexture
V/MediaPlayerNative(25448): prepare
V/MediaPlayerNative(25448): message received msg=200, ext1=10973, ext2=0
W/MediaPlayerNative(25448): info/warning (10973, 0)
V/MediaPlayerNative(25448): callback application
V/MediaPlayerNative(25448): back from callback
V/MediaPlayerNative(25448): message received msg=1, ext1=0, ext2=0
V/MediaPlayerNative(25448): MediaPlayer::notify() prepared
V/MediaPlayerNative(25448): signal application thread
V/MediaPlayerNative(25448): callback application
V/MediaPlayerNative(25448): prepare complete - status=0
V/MediaPlayerNative(25448): back from callback
V/MediaPlayerNative(25448): invoke 68
V/MediaPlayer-JNI(25448): getCurrentPosition: 0 (msec)
V/MediaPlayerNative(25448): invoke 68
I/flutter (25448): FS:<--- startPlayer
D/FlutterSoundPlugin(25448): mediaPlayer prepared and start
V/MediaPlayer-JNI(25448): start
V/MediaPlayerNative(25448): start
I/flutter (25448): dismissOverlay
V/MediaPlayerNative(25448): message received msg=300, ext1=0, ext2=0
V/MediaPlayerNative(25448): Received SEC_MM_PLAYER_CONTEXT_AWARE
V/MediaPlayerNative(25448): callback application
V/MediaPlayerNative(25448): back from callback
D/AndroidRuntime(25448): Shutting down VM
E/AndroidRuntime(25448): FATAL EXCEPTION: main
E/AndroidRuntime(25448): java.lang.IllegalArgumentException: Non-positive period.
E/AndroidRuntime(25448):    at java.util.Timer.schedule(Timer.java:254)
E/AndroidRuntime(25448):    at com.dooboolab.fluttersound.FlutterSoundPlayer.onPrepared(FlutterSoundPlayer.java:462)
E/AndroidRuntime(25448):    at com.dooboolab.fluttersound.FlutterSoundPlayer.lambda$startPlayer$0$FlutterSoundPlayer(FlutterSoundPlayer.java:375)
E/AndroidRuntime(25448):    at com.dooboolab.fluttersound.-$$Lambda$FlutterSoundPlayer$CKEELXPVh5rkG3TIOBhd8o5Vky8.onPrepared(Unknown Source:4)
E/AndroidRuntime(25448):    at android.media.MediaPlayer$EventHandler.handleMessage(MediaPlayer.java:4238)
E/AndroidRuntime(25448):    at android.os.Handler.dispatchMessage(Handler.java:106)
E/AndroidRuntime(25448):    at android.os.Looper.loop(Looper.java:214)
E/AndroidRuntime(25448):    at android.app.ActivityThread.main(ActivityThread.java:7050)
E/AndroidRuntime(25448):    at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(25448):    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
E/AndroidRuntime(25448):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:965)
I/Process (25448): Sending signal. PID: 25448 SIG: 9
Lost connection to device.

---

[jayabrown]

I am having the same problem. And yes, I am doing player.setSubscriptionDuration(Duration(milliseconds: 100));. Works on iOS but not android.

I/flutter (30828): FS:---> openAudioSession 
I/flutter (30828): FS:<--- openAudioSession 
I/flutter (30828): FS:---> startPlayer 
I/flutter (30828): FS:---> stop 
I/flutter (30828): FS:<--- stop 
I/flutter (30828): FS:---> _convert 
I/flutter (30828): FS:---> needToConvert 
I/flutter (30828): FS:<--- needToConvert 
I/flutter (30828): FS:<--- _convert 
I/flutter (30828): FS:<--- startPlayer 
D/FlutterSoundPlugin(30828): mediaPlayer prepared and start
D/AndroidRuntime(30828): Shutting down VM
I/flutter (30828): FS:---> setVolume 
E/AndroidRuntime(30828): FATAL EXCEPTION: main
E/AndroidRuntime(30828): Process: story.crafting.app, PID: 30828
E/AndroidRuntime(30828): java.lang.IllegalArgumentException: Non-positive period.
E/AndroidRuntime(30828):    at java.util.Timer.schedule(Timer.java:254)
E/AndroidRuntime(30828):    at com.dooboolab.fluttersound.FlutterSoundPlayer.onPrepared(FlutterSoundPlayer.java:462)
E/AndroidRuntime(30828):    at com.dooboolab.fluttersound.FlutterSoundPlayer.lambda$startPlayer$0$FlutterSoundPlayer(FlutterSoundPlayer.java:375)
E/AndroidRuntime(30828):    at com.dooboolab.fluttersound.-$$Lambda$FlutterSoundPlayer$CKEELXPVh5rkG3TIOBhd8o5Vky8.onPrepared(Unknown Source:4)
E/AndroidRuntime(30828):    at android.media.MediaPlayer$EventHandler.handleMessage(MediaPlayer.java:3367)
E/AndroidRuntime(30828):    at android.os.Handler.dispatchMessage(Handler.java:106)
E/AndroidRuntime(30828):    at android.os.Looper.loop(Looper.java:193)
E/AndroidRuntime(30828):    at android.app.ActivityThread.main(ActivityThread.java:6680)
E/AndroidRuntime(30828):    at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(30828):    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
E/AndroidRuntime(30828):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
I/Process (30828): Sending signal. PID: 30828 SIG: 9
Lost connection to device.

[jayabrown]

Figured it out! I just needed to change:

player.setSubscriptionDuration(Duration(milliseconds: 100));
to
await player.setSubscriptionDuration(Duration(milliseconds: 100));

and it worked.

[Larpoux]

It seems that FS has a concurrency bug, here.
I will try to figure what, before the 6.0 release, in a few weeks. Please stay tuned.

Note: adding await was a rich idea. Asynchronous processing in Flutter is a real bug net. Better to stay far from this horrible dart feature.
Please keep this issue open

[tonypottera24]

@jayabrown where did you put the setSubscriptionDuration?

[tonypottera24]

@Larpoux This problem actually happened quite frequently especially when I'm playing something during a recording.

[Larpoux]

I am sorry, Tony, that you have crashes with FS.
I worked a little bit to fix some race conditions in the future Flutter Sound 6.0 and it could eventually fix your problems.
I do not know precisely what is the state of your project : in development or deployed ?
If in development, perhaps you could try a beta version of Flutter Sound V6 : I am actually completely overbooked and I would prefer not to do maintenance on V5.0, ...if possible... and I want to add some new features in V6, before release it.
The beta V6.0 can be find in this fork

[tonypottera24]

Thank you for your help and your time!
I'll let you know if it works.

[Larpoux]

If you try the Beta V6, you will have to delete the Podfile.lock and recreate it with

$ pod install

as explained in the migration notice

[tonypottera24]

It works well on android!

[Larpoux]

This is really good news. 😄

[Larpoux]

V6.0 is released.