1.4.0-beta01

• ExoPlayer:
  • Add ExoPlayer.isReleased() to check whether Exoplayer.release() has been called.
  • Add ExoPlayer.Builder.setMaxSeekToPreviousPositionMs to configure the maximum position for which seekToPrevious() seeks to the previous item (#1425).
• Transformer:
  • Remove ExportResult.processedInputs field. If you use this field for codec details, then use DefaultDecoderFactory.listener instead. In case of a codec exception, codec details will be available in the ExportException.codecInfo.
• Extractors:
  • Fix PCM audio format extraction in AVI containers.
• Image:
  • Allow null as parameter for ExoPlayer.setImageOutput to clear a previously set ImageOutput.
• Effect:
  • Remove unused OverlaySettings.useHdr since dynamic range of overlay
  • Add HDR support for TextOverlay. Luminance of the text overlay can be adjusted with OverlaySettings.setHdrLuminanceMultiplier.
• Session:
  • Add MediaSession.Callback.onPlayerInteractionFinished to inform sessions when a series of player interactions from a specific controller finished.
  • Add SessionError and use it in SessionResult and LibraryResult instead of the error code to provide more information about the error and how to resolve the error if possible.
  • Publish the code for the media3 controller test app that can be used to test interactions with apps publishing a media session.
  • Propagate extras passed to media3's MediaSession[Builder].setSessionExtras() to a media1 controller's PlaybackStateCompat.getExtras().
  • Map fatal and non-fatal errors to and from the platform session. A PlaybackException is mapped to a fatal error state of the PlaybackStateCompat. A SessionError sent to the media notification controller with MediaSession.sendError(ControllerInfo, SessionError) is mapped to a non-fatal error in PlaybackStateCompat which means that error code and message are set but the state of the platform session remains different to STATE_ERROR.
• UI:
  • Add image display support to PlayerView when connected to an ExoPlayer (#1144).
  • Add customization of various icons in PlayerControlView through xml attributes to allow different drawables per PlayerView instance, rather than global overrides (#1200).
• HLS Extension:
  • Fix a bug where non-primary playing playlists are not refreshed during live playback (#1240).
• Remove deprecated symbols:
  • Remove Bundleable interface. This includes removing all Bundleable.Creator<Foo> CREATOR constant fields. Callers should use the Bundle toBundle() and static Foo fromBundle(Bundle) methods on each type instead.