void
SeekTask::OnVideoDecoded(MediaData* aVideoSample)
{
AssertOwnerThread();
RefPtr<MediaData> video(aVideoSample);
MOZ_ASSERT(video);
// The MDSM::mDecodedVideoEndTime will be updated once the whole SeekTask is
// resolved.
SAMPLE_LOG("OnVideoDecoded [%lld,%lld] disc=%d",
(video ? video->mTime : -1),
(video ? video->GetEndTime() : -1),
(video ? video->mDiscontinuity : 0));
if (!Exists()) {
// We've received a sample from a previous decode. Discard it.
return;
}
if (mDropVideoUntilNextDiscontinuity) {
if (video->mDiscontinuity) {
mDropVideoUntilNextDiscontinuity = false;
}
}
if (!mDropVideoUntilNextDiscontinuity) {
// We must be after the discontinuity; we're receiving samples
// at or after the seek target.
if (mSeekJob.mTarget.IsFast() &&
mSeekJob.mTarget.GetTime().ToMicroseconds() > mCurrentTimeBeforeSeek &&
video->mTime < mCurrentTimeBeforeSeek) {
// We are doing a fastSeek, but we ended up *before* the previous
// playback position. This is surprising UX, so switch to an accurate
// seek and decode to the seek target. This is not conformant to the
// spec, fastSeek should always be fast, but until we get the time to
// change all Readers to seek to the keyframe after the currentTime
// in this case, we'll just decode forward. Bug 1026330.
mSeekJob.mTarget.SetType(SeekTarget::Accurate);
}
if (mSeekJob.mTarget.IsFast()) {
// Non-precise seek. We can stop the seek at the first sample.
mSeekedVideoData = video;
} else {
// We're doing an accurate seek. We still need to discard
// MediaData up to the one containing exact seek target.
if (NS_FAILED(DropVideoUpToSeekTarget(video.get()))) {
RejectIfExist(__func__);
return;
}
}
}
CheckIfSeekComplete();
}
void
AccurateSeekTask::OnVideoDecoded(MediaData* aVideoSample)
{
AssertOwnerThread();
MOZ_ASSERT(!mSeekTaskPromise.IsEmpty(), "Seek shouldn't be finished");
RefPtr<MediaData> video(aVideoSample);
MOZ_ASSERT(video);
// The MDSM::mDecodedVideoEndTime will be updated once the whole SeekTask is
// resolved.
SAMPLE_LOG("OnVideoDecoded [%lld,%lld] disc=%d",
video->mTime, video->GetEndTime(), video->mDiscontinuity);
if (mFirstVideoSample) {
mFirstVideoSample = false;
MOZ_ASSERT(video->mDiscontinuity);
}
AdjustFastSeekIfNeeded(video);
if (mTarget.IsFast()) {
// Non-precise seek. We can stop the seek at the first sample.
mSeekedVideoData = video;
mDoneVideoSeeking = true;
} else if (NS_FAILED(DropVideoUpToSeekTarget(video.get()))) {
CancelCallbacks();
RejectIfExist(__func__);
return;
}
if (!mDoneVideoSeeking) {
RequestVideoData();
return;
}
MaybeFinishSeek();
}