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Workaround C2 AAC decoder flush problem on Android 10

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Issue: #6671
PiperOrigin-RevId: 303364788
This commit is contained in:
olly 2020-03-27 18:01:16 +00:00 committed by Oliver Woodman
parent 69ca534935
commit f0e734d33e
2 changed files with 24 additions and 0 deletions
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2
RELEASENOTES.md
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@ -9,6 +9,8 @@
* Allow missing hours and milliseconds in SubRip (.srt) timecodes
([#7122](https://github.com/google/ExoPlayer/issues/7122)).
* Audio:
* Workaround issue that could cause slower than realtime playback of AAC on
Android 10 ([#6671](https://github.com/google/ExoPlayer/issues/6671).
* Enable playback speed adjustment and silence skipping for floating point PCM
audio, via resampling to 16-bit integer PCM. To output the original floating
point audio without adjustment, pass `enableFloatOutput=true` to the

22
library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java
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@ -344,6 +344,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
private boolean codecNeedsReconfigureWorkaround;
private boolean codecNeedsDiscardToSpsWorkaround;
private boolean codecNeedsFlushWorkaround;
private boolean codecNeedsSosFlushWorkaround;
private boolean codecNeedsEosFlushWorkaround;
private boolean codecNeedsEosOutputExceptionWorkaround;
private boolean codecNeedsMonoChannelCountWorkaround;
@ -364,6 +365,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
@DrainAction private int codecDrainAction;
private boolean codecReceivedBuffers;
private boolean codecReceivedEos;
private boolean codecHasOutputMediaFormat;
private long largestQueuedPresentationTimeUs;
private long lastBufferInStreamPresentationTimeUs;
private boolean inputStreamEnded;
@ -652,6 +654,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
availableCodecInfos = null;
codecInfo = null;
codecFormat = null;
codecHasOutputMediaFormat = false;
resetInputBuffer();
resetOutputBuffer();
resetCodecBuffers();
@ -765,6 +768,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
}
if (codecDrainAction == DRAIN_ACTION_REINITIALIZE
|| codecNeedsFlushWorkaround
|| (codecNeedsSosFlushWorkaround && !codecHasOutputMediaFormat)
|| (codecNeedsEosFlushWorkaround && codecReceivedEos)) {
releaseCodec();
return true;
@ -944,6 +948,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
codecNeedsReconfigureWorkaround = codecNeedsReconfigureWorkaround(codecName);
codecNeedsDiscardToSpsWorkaround = codecNeedsDiscardToSpsWorkaround(codecName, codecFormat);
codecNeedsFlushWorkaround = codecNeedsFlushWorkaround(codecName);
codecNeedsSosFlushWorkaround = codecNeedsSosFlushWorkaround(codecName);
codecNeedsEosFlushWorkaround = codecNeedsEosFlushWorkaround(codecName);
codecNeedsEosOutputExceptionWorkaround = codecNeedsEosOutputExceptionWorkaround(codecName);
codecNeedsMonoChannelCountWorkaround =
@ -1610,6 +1615,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
/** Processes a new output {@link MediaFormat}. */
private void processOutputFormat() throws ExoPlaybackException {
codecHasOutputMediaFormat = true;
MediaFormat mediaFormat = codec.getOutputFormat();
if (codecAdaptationWorkaroundMode != ADAPTATION_WORKAROUND_MODE_NEVER
&& mediaFormat.getInteger(MediaFormat.KEY_WIDTH) == ADAPTATION_WORKAROUND_SLICE_WIDTH_HEIGHT
@ -1989,4 +1995,20 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
&& "OMX.MTK.AUDIO.DECODER.MP3".equals(name);
}
/**
* Returns whether the decoder is known to behave incorrectly if flushed prior to having output a
* {@link MediaFormat}.
*
* <p>If true is returned, the renderer will work around the issue by instantiating a new decoder
* when this case occurs.
*
* <p>See [Internal: b/141097367].
*
* @param name The name of the decoder.
* @return True if the decoder is known to behave incorrectly if flushed prior to having output a
* {@link MediaFormat}. False otherwise.
*/
private static boolean codecNeedsSosFlushWorkaround(String name) {
return Util.SDK_INT == 29 && "c2.android.aac.decoder".equals(name);
}
}