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Update stale comment in TrimmingAudioProcessor

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The part about leaving the pending trim start byte count unmodified
if the processor was just configured is not correct.

PiperOrigin-RevId: 295745371
This commit is contained in:
andrewlewis 2020-02-18 17:00:38 +00:00 committed by Oliver Woodman
parent 23e4236227
commit ed1eade980
1 changed files with 6 additions and 5 deletions
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11
library/core/src/main/java/com/google/android/exoplayer2/audio/TrimmingAudioProcessor.java
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@ -155,15 +155,16 @@ import java.nio.ByteBuffer;
@Override
protected void onFlush() {
if (reconfigurationPending) {
// This is the initial flush after reconfiguration. Prepare to trim bytes from the start/end.
reconfigurationPending = false;
endBuffer = new byte[trimEndFrames * inputAudioFormat.bytesPerFrame];
pendingTrimStartBytes = trimStartFrames * inputAudioFormat.bytesPerFrame;
} else {
// Audio processors are flushed after initial configuration, so we leave the pending trim
// start byte count unmodified if the processor was just configured. Otherwise we (possibly
// incorrectly) assume that this is a seek to a non-zero position. We should instead check the
// timestamp of the first input buffer queued after flushing to decide whether to trim (see
// also [Internal: b/77292509]).
// This is a flush during playback (after the initial flush). We assume this was caused by a
// seek to a non-zero position and clear pending start bytes. This assumption may be wrong (we
// may be seeking to zero), but playing data that should have been trimmed shouldn't be
// noticeable after a seek. Ideally we would check the timestamp of the first input buffer
// queued after flushing to decide whether to trim (see also [Internal: b/77292509]).
pendingTrimStartBytes = 0;
}
endBufferSize = 0;