void
VideoSink::UpdateRenderedVideoFramesByTimer()
{
AssertOwnerThread();
mUpdateScheduler.CompleteRequest();
UpdateRenderedVideoFrames();
}
void
VideoSink::TryUpdateRenderedVideoFrames()
{
AssertOwnerThread();
if (!mUpdateScheduler.IsScheduled() && VideoQueue().GetSize() >= 1 &&
mAudioSink->IsPlaying()) {
UpdateRenderedVideoFrames();
}
}
void
VideoSink::OnVideoQueueFinished()
{
AssertOwnerThread();
// Run render loop if the end promise is not resolved yet.
if (!mUpdateScheduler.IsScheduled() &&
mAudioSink->IsPlaying() &&
!mEndPromiseHolder.IsEmpty()) {
UpdateRenderedVideoFrames();
}
}
void
VideoSink::Start(int64_t aStartTime, const MediaInfo& aInfo)
{
AssertOwnerThread();
VSINK_LOG("[%s]", __func__);
mAudioSink->Start(aStartTime, aInfo);
mHasVideo = aInfo.HasVideo();
if (mHasVideo) {
mEndPromise = mEndPromiseHolder.Ensure(__func__);
// If the underlying MediaSink has an end promise for the video track (which
// happens when mAudioSink refers to a DecodedStream), we must wait for it
// to complete before resolving our own end promise. Otherwise, MDSM might
// stop playback before DecodedStream plays to the end and cause
// test_streams_element_capture.html to time out.
RefPtr<GenericPromise> p = mAudioSink->OnEnded(TrackInfo::kVideoTrack);
if (p) {
RefPtr<VideoSink> self = this;
mVideoSinkEndRequest.Begin(p->Then(mOwnerThread, __func__,
[self] () {
self->mVideoSinkEndRequest.Complete();
self->TryUpdateRenderedVideoFrames();
// It is possible the video queue size is 0 and we have no frames to
// render. However, we need to call MaybeResolveEndPromise() to ensure
// mEndPromiseHolder is resolved.
self->MaybeResolveEndPromise();
}, [self] () {
self->mVideoSinkEndRequest.Complete();
self->TryUpdateRenderedVideoFrames();
self->MaybeResolveEndPromise();
}));
}
ConnectListener();
// Run the render loop at least once so we can resolve the end promise
// when video duration is 0.
UpdateRenderedVideoFrames();
}
}
