void
MediaSourceReader::ContinueShutdown()
{
ReentrantMonitorAutoEnter mon(mDecoder->GetReentrantMonitor());
if (mTrackBuffers.Length()) {
mTrackBuffers[0]->Shutdown()->Then(OwnerThread(), __func__, this,
&MediaSourceReader::ContinueShutdown,
&MediaSourceReader::ContinueShutdown);
mShutdownTrackBuffers.AppendElement(mTrackBuffers[0]);
mTrackBuffers.RemoveElementAt(0);
return;
}
mAudioTrack = nullptr;
mAudioSourceDecoder = nullptr;
mVideoTrack = nullptr;
mVideoSourceDecoder = nullptr;
#ifdef MOZ_FMP4
if (mSharedDecoderManager) {
mSharedDecoderManager->Shutdown();
mSharedDecoderManager = nullptr;
}
#endif
MOZ_ASSERT(mAudioPromise.IsEmpty());
MOZ_ASSERT(mVideoPromise.IsEmpty());
mAudioWaitPromise.RejectIfExists(WaitForDataRejectValue(MediaData::AUDIO_DATA, WaitForDataRejectValue::SHUTDOWN), __func__);
mVideoWaitPromise.RejectIfExists(WaitForDataRejectValue(MediaData::VIDEO_DATA, WaitForDataRejectValue::SHUTDOWN), __func__);
MediaDecoderReader::Shutdown()->ChainTo(mMediaSourceShutdownPromise.Steal(), __func__);
}
int64_t MediaOmxReader::ProcessCachedData(int64_t aOffset)
{
// Could run on decoder thread or IO thread.
nsRefPtr<AbstractMediaDecoder> decoder = SafeGetDecoder();
if (!decoder) { // reader has shut down
return -1;
}
// We read data in chunks of 32 KiB. We can reduce this
// value if media, such as sdcards, is too slow.
// Because of SD card's slowness, need to keep sReadSize to small size.
// See Bug 914870.
static const int64_t sReadSize = 32 * 1024;
NS_ASSERTION(!NS_IsMainThread(), "Should not be on main thread.");
MOZ_ASSERT(decoder->GetResource());
int64_t resourceLength = decoder->GetResource()->GetCachedDataEnd(0);
NS_ENSURE_TRUE(resourceLength >= 0, -1);
if (aOffset >= resourceLength) {
return 0; // Cache is empty, nothing to do
}
int64_t bufferLength = std::min<int64_t>(resourceLength-aOffset, sReadSize);
nsRefPtr<NotifyDataArrivedRunnable> runnable(
new NotifyDataArrivedRunnable(this, bufferLength, aOffset, resourceLength));
if (OnTaskQueue()) {
runnable->Run();
} else {
OwnerThread()->Dispatch(runnable.forget());
}
return resourceLength - aOffset - bufferLength;
}
nsRefPtr<MediaDecoderReader::SeekPromise>
MediaOmxReader::Seek(int64_t aTarget, int64_t aEndTime)
{
MOZ_ASSERT(OnTaskQueue());
EnsureActive();
nsRefPtr<SeekPromise> p = mSeekPromise.Ensure(__func__);
if (mHasAudio && mHasVideo) {
// The OMXDecoder seeks/demuxes audio and video streams separately. So if
// we seek both audio and video to aTarget, the audio stream can typically
// seek closer to the seek target, since typically every audio block is
// a sync point, whereas for video there are only keyframes once every few
// seconds. So if we have both audio and video, we must seek the video
// stream to the preceeding keyframe first, get the stream time, and then
// seek the audio stream to match the video stream's time. Otherwise, the
// audio and video streams won't be in sync after the seek.
mVideoSeekTimeUs = aTarget;
nsRefPtr<MediaOmxReader> self = this;
mSeekRequest.Begin(DecodeToFirstVideoData()->Then(OwnerThread(), __func__, [self] (VideoData* v) {
self->mSeekRequest.Complete();
self->mAudioSeekTimeUs = v->mTime;
self->mSeekPromise.Resolve(self->mAudioSeekTimeUs, __func__);
}, [self, aTarget] () {
self->mSeekRequest.Complete();
self->mAudioSeekTimeUs = aTarget;
self->mSeekPromise.Resolve(aTarget, __func__);
}));
} else {
mAudioSeekTimeUs = mVideoSeekTimeUs = aTarget;
mSeekPromise.Resolve(aTarget, __func__);
}
return p;
}
void MediaSourceReader::DoAudioRequest()
{
mAudioRequest.Begin(GetAudioReader()->RequestAudioData()
->Then(OwnerThread(), __func__, this,
&MediaSourceReader::OnAudioDecoded,
&MediaSourceReader::OnAudioNotDecoded));
}
RefPtr<MediaDecoderReader::MediaDataPromise>
MediaDecoderReader::DecodeToFirstVideoData()
{
MOZ_ASSERT(OnTaskQueue());
typedef MediaDecoderReader::MediaDataPromise PromiseType;
RefPtr<PromiseType::Private> p = new PromiseType::Private(__func__);
RefPtr<MediaDecoderReader> self = this;
InvokeUntil([self] () -> bool {
MOZ_ASSERT(self->OnTaskQueue());
NS_ENSURE_TRUE(!self->mShutdown, false);
bool skip = false;
if (!self->DecodeVideoFrame(skip, 0)) {
self->VideoQueue().Finish();
return !!self->VideoQueue().PeekFront();
}
return true;
}, [self] () -> bool {
MOZ_ASSERT(self->OnTaskQueue());
return self->VideoQueue().GetSize();
})->Then(OwnerThread(), __func__, [self, p] () {
p->Resolve(self->VideoQueue().PeekFront(), __func__);
}, [p] () {
// We don't have a way to differentiate EOS, error, and shutdown here. :-(
p->Reject(NS_ERROR_DOM_MEDIA_END_OF_STREAM, __func__);
});
return p.forget();
}
void
AccurateSeekTask::SetCallbacks()
{
AssertOwnerThread();
mAudioCallback = mReader->AudioCallback().Connect(
OwnerThread(), [this] (AudioCallbackData aData) {
if (aData.is<MediaData*>()) {
OnAudioDecoded(aData.as<MediaData*>());
} else {
OnNotDecoded(MediaData::AUDIO_DATA,
aData.as<MediaDecoderReader::NotDecodedReason>());
}
});
mVideoCallback = mReader->VideoCallback().Connect(
OwnerThread(), [this] (VideoCallbackData aData) {
typedef Tuple<MediaData*, TimeStamp> Type;
if (aData.is<Type>()) {
OnVideoDecoded(Get<0>(aData.as<Type>()));
} else {
OnNotDecoded(MediaData::VIDEO_DATA,
aData.as<MediaDecoderReader::NotDecodedReason>());
}
});
mAudioWaitCallback = mReader->AudioWaitCallback().Connect(
OwnerThread(), [this] (WaitCallbackData aData) {
// Ignore pending requests from video-only seek.
if (mTarget.IsVideoOnly()) {
return;
}
if (aData.is<MediaData::Type>()) {
RequestAudioData();
}
});
mVideoWaitCallback = mReader->VideoWaitCallback().Connect(
OwnerThread(), [this] (WaitCallbackData aData) {
if (aData.is<MediaData::Type>()) {
RequestVideoData();
}
});
}
nsRefPtr<MediaDecoderReader::VideoDataPromise>
MediaSourceReader::RequestVideoData(bool aSkipToNextKeyframe,
int64_t aTimeThreshold,
bool aForceDecodeAhead)
{
MOZ_ASSERT(OnTaskQueue());
MOZ_DIAGNOSTIC_ASSERT(mSeekPromise.IsEmpty(), "No sample requests allowed while seeking");
MOZ_DIAGNOSTIC_ASSERT(mVideoPromise.IsEmpty(), "No duplicate sample requests");
nsRefPtr<VideoDataPromise> p = mVideoPromise.Ensure(__func__);
MSE_DEBUGV("RequestVideoData(%d, %lld), mLastVideoTime=%lld",
aSkipToNextKeyframe, aTimeThreshold, mLastVideoTime);
if (!mVideoTrack) {
MSE_DEBUG("called with no video track");
mVideoPromise.Reject(DECODE_ERROR, __func__);
return p;
}
if (aSkipToNextKeyframe) {
mTimeThreshold = aTimeThreshold;
mDropAudioBeforeThreshold = true;
mDropVideoBeforeThreshold = true;
}
if (IsSeeking()) {
MSE_DEBUG("called mid-seek. Rejecting.");
mVideoPromise.Reject(CANCELED, __func__);
return p;
}
MOZ_DIAGNOSTIC_ASSERT(!mVideoSeekRequest.Exists());
mForceVideoDecodeAhead = aForceDecodeAhead;
SwitchSourceResult ret = SwitchVideoSource(&mLastVideoTime);
switch (ret) {
case SOURCE_NEW:
GetVideoReader()->ResetDecode();
mVideoSeekRequest.Begin(GetVideoReader()->Seek(GetReaderVideoTime(mLastVideoTime), 0)
->Then(OwnerThread(), __func__, this,
&MediaSourceReader::CompleteVideoSeekAndDoRequest,
&MediaSourceReader::CompleteVideoSeekAndRejectPromise));
break;
case SOURCE_NONE:
if (!mLastVideoTime) {
// This is the first call to RequestVideoData.
// Fallback to using decoder with earliest data.
mVideoSourceDecoder = FirstDecoder(MediaData::VIDEO_DATA);
}
if (mLastVideoTime || !mVideoSourceDecoder) {
CheckForWaitOrEndOfStream(MediaData::VIDEO_DATA, mLastVideoTime);
break;
}
// Fallback to getting first frame from first decoder.
default:
DoVideoRequest();
break;
}
return p;
}
void
MediaSourceReader::DoVideoRequest()
{
mVideoRequest.Begin(GetVideoReader()->RequestVideoData(mDropVideoBeforeThreshold,
GetReaderVideoTime(mTimeThreshold),
mForceVideoDecodeAhead)
->Then(OwnerThread(), __func__, this,
&MediaSourceReader::OnVideoDecoded,
&MediaSourceReader::OnVideoNotDecoded));
}
RefPtr<SeekTask::SeekTaskPromise>
SeekTask::Seek(const media::TimeUnit& aDuration)
{
AssertOwnerThread();
// Do the seek.
mSeekRequest.Begin(mReader->Seek(mSeekJob.mTarget, aDuration)
->Then(OwnerThread(), __func__, this,
&SeekTask::OnSeekResolved, &SeekTask::OnSeekRejected));
return mSeekTaskPromise.Ensure(__func__);
}
void
MediaSourceReader::NotifyTimeRangesChanged()
{
ReentrantMonitorAutoEnter mon(mDecoder->GetReentrantMonitor());
if (mWaitingForSeekData) {
//post a task to the decode queue to try to complete the pending seek.
RefPtr<nsIRunnable> task(NS_NewRunnableMethod(
this, &MediaSourceReader::AttemptSeek));
OwnerThread()->Dispatch(task.forget());
} else {
MaybeNotifyHaveData();
}
}
void
MediaSourceReader::Ended(bool aEnded)
{
mDecoder->GetReentrantMonitor().AssertCurrentThreadIn();
mEnded = aEnded;
if (aEnded) {
// post a task to the decode queue to try to complete any pending
// seek or wait
RefPtr<nsIRunnable> task(NS_NewRunnableMethod(
this, &MediaSourceReader::NotifyTimeRangesChanged));
OwnerThread()->Dispatch(task.forget());
}
}
nsresult RtspOmxReader::InitOmxDecoder()
{
if (!mOmxDecoder.get()) {
NS_ASSERTION(mDecoder, "RtspOmxReader mDecoder is null.");
NS_ASSERTION(mDecoder->GetResource(),
"RtspOmxReader mDecoder->GetResource() is null.");
mExtractor = new RtspExtractor(mRtspResource);
mOmxDecoder = new OmxDecoder(mDecoder, OwnerThread());
if (!mOmxDecoder->Init(mExtractor)) {
return NS_ERROR_FAILURE;
}
}
return NS_OK;
}
void
MediaSourceReader::OnVideoNotDecoded(NotDecodedReason aReason)
{
MOZ_DIAGNOSTIC_ASSERT(!IsSeeking());
mVideoRequest.Complete();
MSE_DEBUG("aReason=%u IsEnded: %d", aReason, IsEnded());
if (aReason == CANCELED) {
mVideoPromise.Reject(CANCELED, __func__);
return;
}
// if End of stream. Force switching past this stream to another reader by
// switching to the end of the buffered range.
int64_t lastVideoTime = mLastVideoTime;
if (aReason == END_OF_STREAM && mVideoSourceDecoder) {
AdjustEndTime(&mLastVideoTime, mVideoSourceDecoder);
}
// See if we can find a different reader that can pick up where we left off.
SwitchSourceResult result = SwitchVideoSource(&mLastVideoTime);
if (result == SOURCE_NEW) {
GetVideoReader()->ResetDecode();
mVideoSeekRequest.Begin(GetVideoReader()->Seek(GetReaderVideoTime(mLastVideoTime), 0)
->Then(OwnerThread(), __func__, this,
&MediaSourceReader::CompleteVideoSeekAndDoRequest,
&MediaSourceReader::CompleteVideoSeekAndRejectPromise));
return;
}
// If we got a DECODE_ERROR and we have buffered data in the requested range
// then it must be a genuine decoding error.
// Otherwise we can assume that the data was either evicted or explicitely
// removed from the source buffer and we should wait for new data.
if (aReason == DECODE_ERROR && result != SOURCE_NONE) {
mVideoPromise.Reject(DECODE_ERROR, __func__);
return;
}
CheckForWaitOrEndOfStream(MediaData::VIDEO_DATA, mLastVideoTime);
if (mLastVideoTime - lastVideoTime >= EOS_FUZZ_US) {
// No decoders are available to switch to. We will re-attempt from the last
// failing position.
mLastVideoTime = lastVideoTime;
}
}
nsRefPtr<MediaDecoderReader::AudioDataPromise>
MediaSourceReader::RequestAudioData()
{
MOZ_ASSERT(OnTaskQueue());
MOZ_DIAGNOSTIC_ASSERT(mSeekPromise.IsEmpty(), "No sample requests allowed while seeking");
MOZ_DIAGNOSTIC_ASSERT(mAudioPromise.IsEmpty(), "No duplicate sample requests");
nsRefPtr<AudioDataPromise> p = mAudioPromise.Ensure(__func__);
MSE_DEBUGV("mLastAudioTime=%lld", mLastAudioTime);
if (!mAudioTrack) {
MSE_DEBUG("called with no audio track");
mAudioPromise.Reject(DECODE_ERROR, __func__);
return p;
}
if (IsSeeking()) {
MSE_DEBUG("called mid-seek. Rejecting.");
mAudioPromise.Reject(CANCELED, __func__);
return p;
}
MOZ_DIAGNOSTIC_ASSERT(!mAudioSeekRequest.Exists());
SwitchSourceResult ret = SwitchAudioSource(&mLastAudioTime);
switch (ret) {
case SOURCE_NEW:
GetAudioReader()->ResetDecode();
mAudioSeekRequest.Begin(GetAudioReader()->Seek(GetReaderAudioTime(mLastAudioTime), 0)
->Then(OwnerThread(), __func__, this,
&MediaSourceReader::CompleteAudioSeekAndDoRequest,
&MediaSourceReader::CompleteAudioSeekAndRejectPromise));
break;
case SOURCE_NONE:
if (!mLastAudioTime) {
// This is the first call to RequestAudioData.
// Fallback to using decoder with earliest data.
mAudioSourceDecoder = FirstDecoder(MediaData::AUDIO_DATA);
}
if (mLastAudioTime || !mAudioSourceDecoder) {
CheckForWaitOrEndOfStream(MediaData::AUDIO_DATA, mLastAudioTime);
break;
}
// Fallback to getting first frame from first decoder.
default:
DoAudioRequest();
break;
}
return p;
}
void
MediaSourceReader::DoVideoSeek()
{
int64_t seekTime = mPendingSeekTime;
if (mSeekToEnd) {
seekTime = LastSampleTime(MediaData::VIDEO_DATA);
}
if (SwitchVideoSource(&seekTime) == SOURCE_NONE) {
// Data we need got evicted since the last time we checked for data
// availability. Abort current seek attempt.
mWaitingForSeekData = true;
return;
}
GetVideoReader()->ResetDecode();
mVideoSeekRequest.Begin(GetVideoReader()->Seek(GetReaderVideoTime(seekTime), 0)
->Then(OwnerThread(), __func__, this,
&MediaSourceReader::OnVideoSeekCompleted,
&MediaSourceReader::OnVideoSeekFailed));
MSE_DEBUG("reader=%p", GetVideoReader());
}
nsresult MediaOmxReader::InitOmxDecoder()
{
if (!mOmxDecoder.get()) {
//register sniffers, if they are not registered in this process.
DataSource::RegisterDefaultSniffers();
sp<DataSource> dataSource = new MediaStreamSource(mDecoder->GetResource());
dataSource->initCheck();
mExtractor = MediaExtractor::Create(dataSource);
if (!mExtractor.get()) {
return NS_ERROR_FAILURE;
}
mOmxDecoder = new OmxDecoder(mDecoder, OwnerThread());
if (!mOmxDecoder->Init(mExtractor)) {
return NS_ERROR_FAILURE;
}
mStreamSource = static_cast<MediaStreamSource*>(dataSource.get());
}
return NS_OK;
}
already_AddRefed<SourceBufferDecoder>
MediaSourceReader::CreateSubDecoder(const nsACString& aType, int64_t aTimestampOffset)
{
MOZ_ASSERT(NS_IsMainThread());
if (mDecoder->IsShutdown()) {
return nullptr;
}
// The task queue borrowing is icky. It would be nicer to just give each subreader
// its own task queue. Unfortunately though, Request{Audio,Video}Data implementations
// currently assert that they're on "the decode thread", and so having
// separate task queues makes MediaSource stuff unnecessarily cumbersome. We
// should remove the need for these assertions (which probably involves making
// all Request*Data implementations fully async), and then get rid of the
// borrowing.
nsRefPtr<SourceBufferDecoder> decoder =
new SourceBufferDecoder(new SourceBufferResource(aType), mDecoder, aTimestampOffset);
nsRefPtr<MediaDecoderReader> reader(CreateReaderForType(aType, decoder, OwnerThread()));
if (!reader) {
return nullptr;
}
// MSE uses a start time of 0 everywhere. Set that immediately on the
// subreader to make sure that it's always in a state where we can invoke
// GetBuffered on it.
reader->DispatchSetStartTime(0);
#ifdef MOZ_FMP4
reader->SetSharedDecoderManager(mSharedDecoderManager);
#endif
reader->Init(nullptr);
MSE_DEBUG("subdecoder %p subreader %p",
decoder.get(), reader.get());
decoder->SetReader(reader);
#ifdef MOZ_EME
decoder->SetCDMProxy(mCDMProxy);
#endif
return decoder.forget();
}
void
MediaSourceReader::OnAudioDecoded(AudioData* aSample)
{
MOZ_DIAGNOSTIC_ASSERT(!IsSeeking());
mAudioRequest.Complete();
int64_t ourTime = aSample->mTime + mAudioSourceDecoder->GetTimestampOffset();
if (aSample->mDiscontinuity) {
mAudioDiscontinuity = true;
}
MSE_DEBUGV("[mTime=%lld mDuration=%lld mDiscontinuity=%d]",
ourTime, aSample->mDuration, aSample->mDiscontinuity);
if (mDropAudioBeforeThreshold) {
if (ourTime < mTimeThreshold) {
MSE_DEBUG("mTime=%lld < mTimeThreshold=%lld",
ourTime, mTimeThreshold);
mAudioRequest.Begin(GetAudioReader()->RequestAudioData()
->Then(OwnerThread(), __func__, this,
&MediaSourceReader::OnAudioDecoded,
&MediaSourceReader::OnAudioNotDecoded));
return;
}
mDropAudioBeforeThreshold = false;
}
// Adjust the sample time into our reference.
nsRefPtr<AudioData> newSample =
AudioData::TransferAndUpdateTimestampAndDuration(aSample,
ourTime,
aSample->mDuration);
mLastAudioTime = newSample->GetEndTime();
if (mAudioDiscontinuity) {
newSample->mDiscontinuity = true;
mAudioDiscontinuity = false;
}
mAudioPromise.Resolve(newSample, __func__);
}
void
MediaDecoderReader::ThrottledNotifyDataArrived(const Interval<int64_t>& aInterval)
{
MOZ_ASSERT(OnTaskQueue());
NS_ENSURE_TRUE_VOID(!mShutdown);
if (mThrottledInterval.isNothing()) {
mThrottledInterval.emplace(aInterval);
} else if (mThrottledInterval.ref().Contains(aInterval)) {
return;
} else if (!mThrottledInterval.ref().Contiguous(aInterval)) {
DoThrottledNotify();
mThrottledInterval.emplace(aInterval);
} else {
mThrottledInterval = Some(mThrottledInterval.ref().Span(aInterval));
}
// If it's been long enough since our last update, do it.
if (TimeStamp::Now() - mLastThrottledNotify > mThrottleDuration) {
DoThrottledNotify();
} else if (!mThrottledNotify.Exists()) {
// Otherwise, schedule an update if one isn't scheduled already.
nsRefPtr<MediaDecoderReader> self = this;
mThrottledNotify.Begin(
mTimer->WaitUntil(mLastThrottledNotify + mThrottleDuration, __func__)
->Then(OwnerThread(), __func__,
[self] () -> void {
self->mThrottledNotify.Complete();
NS_ENSURE_TRUE_VOID(!self->mShutdown);
self->DoThrottledNotify();
},
[self] () -> void {
self->mThrottledNotify.Complete();
NS_WARNING("throttle callback rejected");
})
);
}
}
nsRefPtr<MediaDecoderReader::MetadataPromise>
MediaOmxReader::AsyncReadMetadata()
{
MOZ_ASSERT(OnTaskQueue());
EnsureActive();
// Initialize the internal OMX Decoder.
nsresult rv = InitOmxDecoder();
if (NS_FAILED(rv)) {
return MediaDecoderReader::MetadataPromise::CreateAndReject(
ReadMetadataFailureReason::METADATA_ERROR, __func__);
}
bool isMP3 = mDecoder->GetResource()->GetContentType().EqualsASCII(AUDIO_MP3);
if (isMP3) {
// When read sdcard's file on b2g platform at constructor,
// the mDecoder->GetResource()->GetLength() would return -1.
// Delay set the total duration on this function.
mMP3FrameParser.SetLength(mDecoder->GetResource()->GetLength());
ProcessCachedData(0);
}
nsRefPtr<MediaDecoderReader::MetadataPromise> p = mMetadataPromise.Ensure(__func__);
nsRefPtr<MediaOmxReader> self = this;
mMediaResourceRequest.Begin(mOmxDecoder->AllocateMediaResources()
->Then(OwnerThread(), __func__,
[self] (bool) -> void {
self->mMediaResourceRequest.Complete();
self->HandleResourceAllocated();
}, [self] (bool) -> void {
self->mMediaResourceRequest.Complete();
self->mMetadataPromise.Reject(ReadMetadataFailureReason::METADATA_ERROR, __func__);
}));
return p;
}
