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Fix offload buffer full detection after setEndOfStream

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This issue has been observed on a test app stress
testing setEndOfStream.

The issue has not been observed on ExoPlayer,
probably due to timing differences, but it is fixed
preventively.

#exo-offload

PiperOrigin-RevId: 333472136
This commit is contained in:
krocard 2020-09-24 10:19:11 +01:00 committed by kim-vde
parent c76bc43de6
commit 3be2463a94
1 changed files with 23 additions and 7 deletions
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30
library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java
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@ -336,6 +336,7 @@ public final class DefaultAudioSink implements AudioSink {
private boolean tunneling;
private long lastFeedElapsedRealtimeMs;
private boolean offloadDisabledUntilNextConfiguration;
private boolean isWaitingForOffloadEndOfStreamHandled;
/**
* Creates a new default audio sink.
@ -712,6 +713,7 @@ public final class DefaultAudioSink implements AudioSink {
audioTrack.setOffloadEndOfStream();
audioTrack.setOffloadDelayPadding(
configuration.inputFormat.encoderDelay, configuration.inputFormat.encoderPadding);
isWaitingForOffloadEndOfStreamHandled = true;
}
}
// Re-apply playback parameters.
@ -932,13 +934,26 @@ public final class DefaultAudioSink implements AudioSink {
throw new WriteException(bytesWritten);
}
if (playing
&& listener != null
&& bytesWritten < bytesRemaining
&& isOffloadedPlayback(audioTrack)) {
long pendingDurationMs =
audioTrackPositionTracker.getPendingBufferDurationMs(writtenEncodedFrames);
listener.onOffloadBufferFull(pendingDurationMs);
if (isOffloadedPlayback(audioTrack)) {
// After calling AudioTrack.setOffloadEndOfStream, the AudioTrack internally stops and
// restarts during which AudioTrack.write will return 0. This situation must be detected to
// prevent reporting the buffer as full even though it is not which could lead ExoPlayer to
// sleep forever waiting for a onDataRequest that will never come.
if (writtenEncodedFrames > 0) {
isWaitingForOffloadEndOfStreamHandled = false;
}
// Consider the offload buffer as full if the AudioTrack is playing and AudioTrack.write could
// not write all the data provided to it. This relies on the assumption that AudioTrack.write
// always writes as much as possible.
if (playing
&& listener != null
&& bytesWritten < bytesRemaining
&& !isWaitingForOffloadEndOfStreamHandled) {
long pendingDurationMs =
audioTrackPositionTracker.getPendingBufferDurationMs(writtenEncodedFrames);
listener.onOffloadBufferFull(pendingDurationMs);
}
}
if (configuration.outputMode == OUTPUT_MODE_PCM) {
@ -1221,6 +1236,7 @@ public final class DefaultAudioSink implements AudioSink {
submittedEncodedFrames = 0;
writtenPcmBytes = 0;
writtenEncodedFrames = 0;
isWaitingForOffloadEndOfStreamHandled = false;
framesPerEncodedSample = 0;
mediaPositionParameters =
new MediaPositionParameters(