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Fix video timestamp 0 set to large value in some cases

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PiperOrigin-RevId: 525064269
This commit is contained in:
kimvde 2023-04-18 08:21:54 +01:00 committed by Rohit Singh
parent ffa969f97c
commit 23b1cab56c
1 changed files with 10 additions and 6 deletions
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14
libraries/transformer/src/main/java/androidx/media3/transformer/VideoSamplePipeline.java
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@ -67,6 +67,7 @@ import org.checkerframework.dataflow.qual.Pure;
private final EncoderWrapper encoderWrapper;
private final DecoderInputBuffer encoderOutputBuffer;
private volatile boolean encoderExpectsTimestampZero;
/**
* The timestamp of the last buffer processed before {@linkplain
* VideoFrameProcessor.Listener#onEnded() frame processing has ended}.
@ -158,6 +159,9 @@ import org.checkerframework.dataflow.qual.Pure;
@Override
public void onOutputFrameAvailable(long presentationTimeUs) {
// Frames are released automatically.
if (presentationTimeUs == 0) {
encoderExpectsTimestampZero = true;
}
lastProcessedFramePresentationTimeUs = presentationTimeUs;
}
@ -254,16 +258,16 @@ import org.checkerframework.dataflow.qual.Pure;
return null;
}
MediaCodec.BufferInfo bufferInfo = checkNotNull(encoderWrapper.getOutputBufferInfo());
if (finalFramePresentationTimeUs != C.TIME_UNSET
&& bufferInfo.size > 0
&& bufferInfo.presentationTimeUs == 0) {
if (bufferInfo.presentationTimeUs == 0) {
// Internal ref b/235045165: Some encoder incorrectly set a zero presentation time on the
// penultimate buffer (before EOS), and sets the actual timestamp on the EOS buffer. Use the
// last processed frame presentation time instead.
// bufferInfo.presentationTimeUs should never be 0 because we apply streamOffsetUs to the
// buffer presentationTimeUs.
if (encoderExpectsTimestampZero) {
encoderExpectsTimestampZero = false;
} else if (finalFramePresentationTimeUs != C.TIME_UNSET && bufferInfo.size > 0) {
bufferInfo.presentationTimeUs = finalFramePresentationTimeUs;
}
}
encoderOutputBuffer.timeUs = bufferInfo.presentationTimeUs;
encoderOutputBuffer.setFlags(bufferInfo.flags);
return encoderOutputBuffer;