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Enforce monotonical PTS

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Audio PTS may come from two sources:
 - recorder.getTimestamp() if the call works;
 - an estimation from the previous PTS and the packet size as a
   fallback.

Therefore, the property that PTS are monotonically increasing is no
guaranteed in corner cases, so enforce it.
This commit is contained in:
Romain Vimont
2023-02-03 13:04:44 +01:00
parent bf7eba97e6
commit a92a712bf0
1 changed files with 12 additions and 0 deletions
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12
server/src/main/java/com/genymobile/scrcpy/AudioEncoder.java
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@@ -87,6 +87,7 @@ public final class AudioEncoder {
class AudioEncoderCallbacks extends MediaCodec.Callback { class AudioEncoderCallbacks extends MediaCodec.Callback {
private final AudioTimestamp timestamp = new AudioTimestamp(); private final AudioTimestamp timestamp = new AudioTimestamp();
private long previousPts;
private long nextPts; private long nextPts;
private boolean eofSignaled; private boolean eofSignaled;
private boolean ended; private boolean ended;
@@ -129,7 +130,18 @@ public final class AudioEncoder {
eofSignaled = true; eofSignaled = true;
} }
if (previousPts != 0 && pts < previousPts) {
// Audio PTS may come from two sources:
// - recorder.getTimestamp() if the call works;
// - an estimation from the previous PTS and the packet size as a fallback.
//
// Therefore, the property that PTS are monotonically increasing is no guaranteed in corner cases, so enforce it.
pts = previousPts + 1;
}
codec.queueInputBuffer(index, 0, r, pts, flags); codec.queueInputBuffer(index, 0, r, pts, flags);
previousPts = pts;
} }
@Override @Override