Reconfigure audio sink when PCM encoding changes

Note:
- Fixing this uncovers another bug in how audio processor draining
  works, so the test playlist still doesn't play correctly after this
  change.
- Once we reconfigure the audio sink based on the ExoPlayer Format
  rather than the codec MediaFormat in a later change, this change can
  be reverted.

Issue: #6601
PiperOrigin-RevId: 281264149

RELEASENOTES.md

@@ -16,6 +16,8 @@
 * Use `ExoMediaDrm.Provider` in `OfflineLicenseHelper` to avoid `ExoMediaDrm`
   leaks ([#4721](https://github.com/google/ExoPlayer/issues/4721)).
 * Fix byte order of HDR10+ static metadata to match CTA-861.3.
+* Reconfigure audio sink when PCM encoding changes
+  ([#6601](https://github.com/google/ExoPlayer/issues/6601)).
 * Make `MediaSourceEventListener.LoadEventInfo` a top-level class.
 
 ### 2.11.0 (not yet released) ###

library/core/src/main/java/com/google/android/exoplayer2/audio/MediaCodecAudioRenderer.java

@@ -512,6 +512,7 @@ public class MediaCodecAudioRenderer extends MediaCodecRenderer implements Media
     return Util.areEqual(oldFormat.sampleMimeType, newFormat.sampleMimeType)
         && oldFormat.channelCount == newFormat.channelCount
         && oldFormat.sampleRate == newFormat.sampleRate
+        && oldFormat.pcmEncoding == newFormat.pcmEncoding
         && oldFormat.initializationDataEquals(newFormat)
         && !MimeTypes.AUDIO_OPUS.equals(oldFormat.sampleMimeType);
   }