IllegalStateException: Current looper (null) is not the playback looper when AudioCapabilities change (DefaultAudioSink)

Version

Media3 1.8.0

More version details

No response

Devices that reproduce the issue

Android STB:
Platform:MStar curry
OS Version: android 7.1.2
Device RAM: 2G

Devices that do not reproduce the issue

No response

Reproducible in the demo app?

Yes

Reproduction steps

1.Download androixd-media3
2.Select Demo
3. Add a stopPlayButton button on xml and add stop function as following. public void onClick(View view) {
if (view == selectTracksButton
&& !isShowingTrackSelectionDialog
&& TrackSelectionDialog.willHaveContent(player)) {
.....
<---- add code --->
}else if (view ==stopPlayButton){
finish();
}
}

4. use mouse to click H.264 HD video
5. click stopPlayButton button to stop
6. repeat 4~5
7. it will crash after several repeats

Expected result

The media plays successfully.

Actual result

2025-11-26 09:44:29.679 13812-14028 AudioManager androidx.media3.demo.main I Terminate Thread
2025-11-26 09:44:29.682 13812-13812 ExoPlayerImplInternal androidx.media3.demo.main W Ignoring messages sent after release.
2025-11-26 09:44:29.707 13812-13812 EventLogger androidx.media3.demo.main D videoDisabled [eventTime=3.54, mediaPos=2.38, window=0, period=0]
2025-11-26 09:44:29.707 13812-13812 EventLogger androidx.media3.demo.main D rendererReady [eventTime=3.55, mediaPos=2.38, window=0, period=0, rendererIndex=0, video, false]
2025-11-26 09:44:29.708 13812-13812 EventLogger androidx.media3.demo.main D audioDisabled [eventTime=3.55, mediaPos=2.38, window=0, period=0]
2025-11-26 09:44:29.709 13812-13812 EventLogger androidx.media3.demo.main D rendererReady [eventTime=3.55, mediaPos=2.38, window=0, period=0, rendererIndex=1, audio, false]
2025-11-26 09:44:29.710 13812-13812 EventLogger androidx.media3.demo.main D videoDecoderReleased [eventTime=3.55, mediaPos=2.38, window=0, period=0, OMX.MS.AVC.Decoder]
2025-11-26 09:44:29.711 13812-13812 EventLogger androidx.media3.demo.main D audioDecoderReleased [eventTime=3.55, mediaPos=2.38, window=0, period=0, OMX.google.aac.decoder]
2025-11-26 09:44:30.262 13812-13812 EventLogger androidx.media3.demo.main D playWhenReady [eventTime=0.00, mediaPos=0.00, window=0, true, USER_REQUEST]
2025-11-26 09:44:30.265 13812-13812 EventLogger androidx.media3.demo.main D surfaceSize [eventTime=0.00, mediaPos=0.00, window=0, w=0, h=0]
2025-11-26 09:44:30.271 13812-13812 EventLogger androidx.media3.demo.main D timeline [eventTime=0.01, mediaPos=0.00, window=0, periodCount=1, windowCount=1, reason=PLAYLIST_CHANGED
2025-11-26 09:44:30.271 13812-13812 EventLogger androidx.media3.demo.main D period [?]
2025-11-26 09:44:30.272 13812-13812 EventLogger androidx.media3.demo.main D window [?, seekable=false, dynamic=true]
2025-11-26 09:44:30.272 13812-13812 EventLogger androidx.media3.demo.main D ]
2025-11-26 09:44:30.274 13812-13812 EventLogger androidx.media3.demo.main D mediaItem [eventTime=0.01, mediaPos=0.00, window=0, reason=PLAYLIST_CHANGED]
2025-11-26 09:44:30.279 13812-13812 EventLogger androidx.media3.demo.main D state [eventTime=0.01, mediaPos=0.00, window=0, BUFFERING]
2025-11-26 09:44:30.313 13812-14052 AudioManager androidx.media3.demo.main I create AudioMonitorHdmiThread
--------- beginning of crash
2025-11-26 09:44:30.314 13812-14054 AudioManager androidx.media3.demo.main D AudioMonitorHdmiThread run() :
2025-11-26 09:44:30.328 13812-14054 AndroidRuntime androidx.media3.demo.main E FATAL EXCEPTION: Thread-5
Process: androidx.media3.demo.main, PID: 13812
java.lang.IllegalStateException: Current looper (null) is not the playback looper (ExoPlayer:Playback)
at androidx.media3.common.util.Assertions.checkState(Assertions.java:100)
at androidx.media3.exoplayer.audio.DefaultAudioSink.onAudioCapabilitiesChanged(DefaultAudioSink.java:1675)
at androidx.media3.exoplayer.audio.DefaultAudioSink$$ExternalSyntheticLambda2.onAudioCapabilitiesChanged(D8$$SyntheticClass:0)
at androidx.media3.exoplayer.audio.AudioCapabilitiesReceiver.onNewAudioCapabilities(AudioCapabilitiesReceiver.java:210)
at androidx.media3.exoplayer.audio.AudioCapabilitiesReceiver.access$400(AudioCapabilitiesReceiver.java:45)
at androidx.media3.exoplayer.audio.AudioCapabilitiesReceiver$AudioDeviceCallbackV23.onAudioDevicesAdded(AudioCapabilitiesReceiver.java:257)
at android.media.AudioManager$AudioMonitorHdmiThread.run(AudioManager.java:4023)
2025-11-26 09:44:30.339 13812-13812 EventLogger androidx.media3.demo.main D surfaceSize [eventTime=0.08, mediaPos=0.00, window=0, w=1280, h=720]
2025-11-26 09:44:30.350 13812-13812 EventLogger androidx.media3.demo.main D audioSessionId [eventTime=0.09, mediaPos=0.00, window=0, 41]

Media

Use Demo app content, it usually occurs.

Bug Report

• You will email the zip file produced by adb bugreport to android-media-github@google.com after filing this issue.