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Bug 1242845 - Make the computation of MediaDecoderStateMachine::HasLowUndecodedData() more accurate and consistent. r=jya.

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This commit is contained in:
JW Wang 2016-01-27 15:12:49 +08:00
parent 552639b0a3
commit 4aa02e1941
1 changed files with 11 additions and 8 deletions
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19
dom/media/MediaDecoderStateMachine.cpp
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@ -1877,14 +1877,17 @@ bool MediaDecoderStateMachine::HasLowUndecodedData(int64_t aUsecs)
return false;
}
int64_t endOfDecodedVideoData = INT64_MAX;
if (HasVideo() && !VideoQueue().AtEndOfStream()) {
endOfDecodedVideoData = VideoQueue().Peek() ? VideoQueue().Peek()->GetEndTime() : VideoEndTime();
}
int64_t endOfDecodedAudioData = INT64_MAX;
if (HasAudio() && !AudioQueue().AtEndOfStream()) {
endOfDecodedAudioData = mDecodedAudioEndTime;
}
// We are never low in decoded data when we don't have audio/video or have
// decoded all audio/video samples.
int64_t endOfDecodedVideoData =
(HasVideo() && !VideoQueue().IsFinished()) ?
mDecodedVideoEndTime :
INT64_MAX;
int64_t endOfDecodedAudioData =
(HasAudio() && !AudioQueue().IsFinished()) ?
mDecodedAudioEndTime :
INT64_MAX;
int64_t endOfDecodedData = std::min(endOfDecodedVideoData, endOfDecodedAudioData);
if (Duration().ToMicroseconds() < endOfDecodedData) {
// Our duration is not up to date. No point buffering.