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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 db61af23b9
commit 1c11febf3f
2 changed files with 26 additions and 0 deletions
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2
RELEASENOTES.md
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@ -67,6 +67,8 @@
to the `DefaultAudioSink` constructor
([#7134](https://github.com/google/ExoPlayer/issues/7134)).
* Add media item based playlist API to Player.
* Workaround issue that could cause slower than realtime playback of AAC
on Android 10 ([#6671](https://github.com/google/ExoPlayer/issues/6671).
* Text:
* Parse `<ruby>` and `<rt>` tags in WebVTT subtitles (rendering is coming
later).

24
library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java
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@ -386,6 +386,7 @@ 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;
@ -406,6 +407,7 @@ 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;
@ -838,6 +840,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
}
if (codecDrainAction == DRAIN_ACTION_REINITIALIZE
|| codecNeedsFlushWorkaround
|| (codecNeedsSosFlushWorkaround && !codecHasOutputMediaFormat)
|| (codecNeedsEosFlushWorkaround && codecReceivedEos)) {
releaseCodec();
return true;
@ -889,11 +892,13 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
availableCodecInfos = null;
codecInfo = null;
codecFormat = null;
codecHasOutputMediaFormat = false;
codecOperatingRate = CODEC_OPERATING_RATE_UNSET;
codecAdaptationWorkaroundMode = ADAPTATION_WORKAROUND_MODE_NEVER;
codecNeedsReconfigureWorkaround = false;
codecNeedsDiscardToSpsWorkaround = false;
codecNeedsFlushWorkaround = false;
codecNeedsSosFlushWorkaround = false;
codecNeedsEosFlushWorkaround = false;
codecNeedsEosOutputExceptionWorkaround = false;
codecNeedsMonoChannelCountWorkaround = false;
@ -1084,6 +1089,7 @@ 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 =
@ -1738,6 +1744,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
/** Processes a new output {@link MediaFormat}. */
private void processOutputMediaFormat() throws ExoPlaybackException {
codecHasOutputMediaFormat = true;
MediaFormat mediaFormat = codecAdapter.getOutputFormat();
if (codecAdaptationWorkaroundMode != ADAPTATION_WORKAROUND_MODE_NEVER
&& mediaFormat.getInteger(MediaFormat.KEY_WIDTH) == ADAPTATION_WORKAROUND_SLICE_WIDTH_HEIGHT
@ -2139,4 +2146,21 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
return Util.SDK_INT <= 18 && format.channelCount == 1
&& "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);
}
}