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An exception might be thrown inside MediaControllerImplBase.onPlayerInfoChanged() #51

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h6ah4i opened this issue Mar 6, 2022 · 0 comments
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An exception might be thrown inside MediaControllerImplBase.onPlayerInfoChanged() #51

h6ah4i opened this issue Mar 6, 2022 · 0 comments
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@marcbaechinger
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@h6ah4i
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h6ah4i commented Mar 6, 2022 •
edited

Hi. I found the following crash report on Crashlytics. An exception thrown inside of the MediaControllerImplBase.onPlayerInfoChanged().

(Click here to display the full stacktrace) 
Fatal Exception: java.lang.IndexOutOfBoundsException: index (*) must be less than size (*)

Example 1

Fatal Exception: java.lang.IndexOutOfBoundsException: index (4) must be less than size (4)
       at com.google.common.base.Preconditions.checkElementIndex(Preconditions.java:1355)
       at com.google.common.base.Preconditions.checkElementIndex(Preconditions.java:1337)
       at com.google.common.collect.RegularImmutableList.get(RegularImmutableList.java:82)
       at androidx.media3.common.Timeline$RemotableTimeline.getWindow(Timeline.java:1530)
       at androidx.media3.common.Timeline.getWindow(Timeline.java:1118)
       at androidx.media3.session.PlayerInfo.getCurrentMediaItem(PlayerInfo.java:637)
       at androidx.media3.session.MediaControllerImplBase.onPlayerInfoChanged(MediaControllerImplBase.java:2383)
       at androidx.media3.session.MediaControllerStub.lambda$onPlayerInfoChanged$9(MediaControllerStub.java:180)
       at androidx.media3.session.MediaControllerStub.$r8$lambda$X59hShI5lo8-62FDwGBWO2tdQfo(MediaControllerStub.java)
       at androidx.media3.session.MediaControllerStub$$InternalSyntheticLambda$2$4a3a6820449623629e404f4bef3c0240e0815b9ab568a3a89e0663d3f4d5622f$0.run(MediaControllerStub.java:4)
       at androidx.media3.session.MediaControllerStub.lambda$dispatchControllerTaskOnHandler$12(MediaControllerStub.java:271)
       at androidx.media3.session.MediaControllerStub.$r8$lambda$YGpG-xpiKgSpdH847m1pEUdLemY(MediaControllerStub.java)
       at androidx.media3.session.MediaControllerStub$$InternalSyntheticLambda$3$c38f624292a1f1ed4af00152f20c76bcf37ccebfce0326ec339c89e37f90a1b6$0.run(MediaControllerStub.java:4)
       at androidx.media3.common.util.Util.postOrRun(Util.java:528)
       at androidx.media3.session.MediaControllerStub.dispatchControllerTaskOnHandler(MediaControllerStub.java:263)
       at androidx.media3.session.MediaControllerStub.onPlayerInfoChanged(MediaControllerStub.java:178)
       at androidx.media3.session.MediaSessionStub$Controller2Cb.onPlayerInfoChanged(MediaSessionStub.java:1734)
       at androidx.media3.session.MediaSessionImpl.dispatchOnPlayerInfoChanged(MediaSessionImpl.java:393)
       at androidx.media3.session.MediaSessionImpl.access$600(MediaSessionImpl.java:80)
       at androidx.media3.session.MediaSessionImpl$PlayerInfoChangedHandler.handleMessage(MediaSessionImpl.java:1186)
       at android.os.Handler.dispatchMessage(Handler.java:106)
       at android.os.Looper.loop(Looper.java:246)
       at android.app.ActivityThread.main(ActivityThread.java:8653)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)

Example 2

Fatal Exception: java.lang.IndexOutOfBoundsException: index (13) must be less than size (1)
       at com.google.common.base.Preconditions.checkElementIndex(Preconditions.java:1355)
       at com.google.common.base.Preconditions.checkElementIndex(Preconditions.java:1337)
       at com.google.common.collect.RegularImmutableList.get(RegularImmutableList.java:82)
       at androidx.media3.common.Timeline$RemotableTimeline.getWindow(Timeline.java:1530)
       at androidx.media3.common.Timeline.getWindow(Timeline.java:1118)
       at androidx.media3.session.PlayerInfo.getCurrentMediaItem(PlayerInfo.java:637)
       at androidx.media3.session.MediaControllerImplBase.onPlayerInfoChanged(MediaControllerImplBase.java:2383)
       at androidx.media3.session.MediaControllerStub.lambda$onPlayerInfoChanged$9(MediaControllerStub.java:180)
       at androidx.media3.session.MediaControllerStub.$r8$lambda$X59hShI5lo8-62FDwGBWO2tdQfo(MediaControllerStub.java)
       at androidx.media3.session.MediaControllerStub$$InternalSyntheticLambda$2$4a3a6820449623629e404f4bef3c0240e0815b9ab568a3a89e0663d3f4d5622f$0.run(MediaControllerStub.java:4)
       at androidx.media3.session.MediaControllerStub.lambda$dispatchControllerTaskOnHandler$12(MediaControllerStub.java:271)
       at androidx.media3.session.MediaControllerStub.$r8$lambda$YGpG-xpiKgSpdH847m1pEUdLemY(MediaControllerStub.java)
       at androidx.media3.session.MediaControllerStub$$InternalSyntheticLambda$3$c38f624292a1f1ed4af00152f20c76bcf37ccebfce0326ec339c89e37f90a1b6$0.run(MediaControllerStub.java:4)
       at androidx.media3.common.util.Util.postOrRun(Util.java:528)
       at androidx.media3.session.MediaControllerStub.dispatchControllerTaskOnHandler(MediaControllerStub.java:263)
       at androidx.media3.session.MediaControllerStub.onPlayerInfoChanged(MediaControllerStub.java:178)
       at androidx.media3.session.MediaSessionStub$Controller2Cb.onPlayerInfoChanged(MediaSessionStub.java:1734)
       at androidx.media3.session.MediaSessionImpl.dispatchOnPlayerInfoChanged(MediaSessionImpl.java:393)
       at androidx.media3.session.MediaSessionImpl.access$600(MediaSessionImpl.java:80)
       at androidx.media3.session.MediaSessionImpl$PlayerInfoChangedHandler.handleMessage(MediaSessionImpl.java:1186)
       at android.os.Handler.dispatchMessage(Handler.java:106)
       at android.os.Looper.loop(Looper.java:193)
       at android.app.ActivityThread.main(ActivityThread.java:6819)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:497)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:912)

Library versions

  • androidx.media3: Built from source (Commit ID: f92ae23)

Affected devices

  • Samsung Galaxy S22 Ultra (Android 12)
  • Samsung Galaxy A71 (Android 11)
  • Infinix Smart 4 (Android 9)
  • and many more...

How to reproduce the issue?

Sorry, I have not succeeded in reproducing the issue yet. I'll post details if I can get any info.
@christosts christosts self-assigned this Mar 21, 2022
icbaker pushed a commit that referenced this issue May 9, 2022
@marcbaechinger @icbaker
Update session position info on timeline change
dee83cc 
This fixes an inconsistent state of the `PlayerInfo` when the index of the playing
media item is changed by a playlist modification. In this inconsistent state,
calling `Playerinfo.getCurrentMediaItem` can produce an
`ArrayIndexOutOfBoundException` (see stack trace in GH issue).

This change takes the following measurements:

- always update sessionPosition and timeline of the PlayerInfo together in
  `MediaSessionImpl.PlayerListener` where the PlayerInfo originates from
- add an assertion to avoid building a `PlayerInfo` instance in an inconsistent
  state
- reduce the window of opportunity for concurrent access to
  `mediaSessionImpl.playerInfo` when dispatching player info changes in
  `MediaSessionImpl`

Issue: #51
PiperOrigin-RevId: 444812661
@androidx androidx locked and limited conversation to collaborators Mar 4, 2023
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@marcbaechinger @h6ah4i @christosts