uint32_t TrackUnionStream::AddTrack(MediaInputPort* aPort, StreamBuffer::Track* aTrack,
GraphTime aFrom)
{
TrackID id = aTrack->GetID();
if (id > mNextAvailableTrackID &&
mUsedTracks.BinaryIndexOf(id) == mUsedTracks.NoIndex) {
// Input id available. Mark it used in mUsedTracks.
mUsedTracks.InsertElementSorted(id);
} else {
// Input id taken, allocate a new one.
id = mNextAvailableTrackID;
// Update mNextAvailableTrackID and prune any mUsedTracks members it now
// covers.
while (1) {
if (!mUsedTracks.RemoveElementSorted(++mNextAvailableTrackID)) {
// Not in use. We're done.
break;
}
}
}
// Round up the track start time so the track, if anything, starts a
// little later than the true time. This means we'll have enough
// samples in our input stream to go just beyond the destination time.
StreamTime outputStart = GraphTimeToStreamTimeWithBlocking(aFrom);
nsAutoPtr<MediaSegment> segment;
segment = aTrack->GetSegment()->CreateEmptyClone();
for (uint32_t j = 0; j < mListeners.Length(); ++j) {
MediaStreamListener* l = mListeners[j];
l->NotifyQueuedTrackChanges(Graph(), id, outputStart,
MediaStreamListener::TRACK_EVENT_CREATED,
*segment,
aPort->GetSource(), aTrack->GetID());
}
segment->AppendNullData(outputStart);
StreamBuffer::Track* track =
&mBuffer.AddTrack(id, outputStart, segment.forget());
STREAM_LOG(LogLevel::Debug, ("TrackUnionStream %p adding track %d for input stream %p track %d, start ticks %lld",
this, id, aPort->GetSource(), aTrack->GetID(),
(long long)outputStart));
TrackMapEntry* map = mTrackMap.AppendElement();
map->mEndOfConsumedInputTicks = 0;
map->mEndOfLastInputIntervalInInputStream = -1;
map->mEndOfLastInputIntervalInOutputStream = -1;
map->mInputPort = aPort;
map->mInputTrackID = aTrack->GetID();
map->mOutputTrackID = track->GetID();
map->mSegment = aTrack->GetSegment()->CreateEmptyClone();
return mTrackMap.Length() - 1;
}
uint32_t TrackUnionStream::AddTrack(MediaInputPort* aPort, StreamBuffer::Track* aTrack,
GraphTime aFrom)
{
// Use the ID of the source track if it's not already assigned to a track,
// otherwise allocate a new unique ID.
TrackID id = aTrack->GetID();
TrackID maxTrackID = 0;
for (uint32_t i = 0; i < mTrackMap.Length(); ++i) {
TrackID outID = mTrackMap[i].mOutputTrackID;
maxTrackID = std::max(maxTrackID, outID);
}
// Note: we might have removed it here, but it might still be in the
// StreamBuffer if the TrackUnionStream sees its input stream flip from
// A to B, where both A and B have a track with the same ID
while (1) {
// search until we find one not in use here, and not in mBuffer
if (!mBuffer.FindTrack(id)) {
break;
}
id = ++maxTrackID;
}
// Round up the track start time so the track, if anything, starts a
// little later than the true time. This means we'll have enough
// samples in our input stream to go just beyond the destination time.
StreamTime outputStart = GraphTimeToStreamTime(aFrom);
nsAutoPtr<MediaSegment> segment;
segment = aTrack->GetSegment()->CreateEmptyClone();
for (uint32_t j = 0; j < mListeners.Length(); ++j) {
MediaStreamListener* l = mListeners[j];
l->NotifyQueuedTrackChanges(Graph(), id, outputStart,
MediaStreamListener::TRACK_EVENT_CREATED,
*segment);
}
segment->AppendNullData(outputStart);
StreamBuffer::Track* track =
&mBuffer.AddTrack(id, outputStart, segment.forget());
STREAM_LOG(PR_LOG_DEBUG, ("TrackUnionStream %p adding track %d for input stream %p track %d, start ticks %lld",
this, id, aPort->GetSource(), aTrack->GetID(),
(long long)outputStart));
TrackMapEntry* map = mTrackMap.AppendElement();
map->mEndOfConsumedInputTicks = 0;
map->mEndOfLastInputIntervalInInputStream = -1;
map->mEndOfLastInputIntervalInOutputStream = -1;
map->mInputPort = aPort;
map->mInputTrackID = aTrack->GetID();
map->mOutputTrackID = track->GetID();
map->mSegment = aTrack->GetSegment()->CreateEmptyClone();
return mTrackMap.Length() - 1;
}
void
AudioNodeStream::FinishOutput()
{
StreamBuffer::Track* track = EnsureTrack(AUDIO_TRACK);
track->SetEnded();
for (uint32_t j = 0; j < mListeners.Length(); ++j) {
MediaStreamListener* l = mListeners[j];
AudioSegment emptySegment;
l->NotifyQueuedTrackChanges(Graph(), AUDIO_TRACK,
track->GetSegment()->GetDuration(),
MediaStreamListener::TRACK_EVENT_ENDED, emptySegment);
}
}
void TrackUnionStream::CopyTrackData(StreamBuffer::Track* aInputTrack,
uint32_t aMapIndex, GraphTime aFrom, GraphTime aTo,
bool* aOutputTrackFinished)
{
TrackMapEntry* map = &mTrackMap[aMapIndex];
StreamBuffer::Track* outputTrack = mBuffer.FindTrack(map->mOutputTrackID);
MOZ_ASSERT(outputTrack && !outputTrack->IsEnded(), "Can't copy to ended track");
MediaSegment* segment = map->mSegment;
MediaStream* source = map->mInputPort->GetSource();
GraphTime next;
*aOutputTrackFinished = false;
for (GraphTime t = aFrom; t < aTo; t = next) {
MediaInputPort::InputInterval interval = map->mInputPort->GetNextInputInterval(t);
interval.mEnd = std::min(interval.mEnd, aTo);
StreamTime inputEnd = source->GraphTimeToStreamTime(interval.mEnd);
StreamTime inputTrackEndPoint = STREAM_TIME_MAX;
if (aInputTrack->IsEnded() &&
aInputTrack->GetEnd() <= inputEnd) {
inputTrackEndPoint = aInputTrack->GetEnd();
*aOutputTrackFinished = true;
}
if (interval.mStart >= interval.mEnd) {
break;
}
StreamTime ticks = interval.mEnd - interval.mStart;
next = interval.mEnd;
StreamTime outputStart = outputTrack->GetEnd();
if (interval.mInputIsBlocked) {
// Maybe the input track ended?
segment->AppendNullData(ticks);
STREAM_LOG(PR_LOG_DEBUG+1, ("TrackUnionStream %p appending %lld ticks of null data to track %d",
this, (long long)ticks, outputTrack->GetID()));
} else if (InMutedCycle()) {
segment->AppendNullData(ticks);
} else {
MOZ_ASSERT(outputTrack->GetEnd() == GraphTimeToStreamTime(interval.mStart),
"Samples missing");
StreamTime inputStart = source->GraphTimeToStreamTime(interval.mStart);
segment->AppendSlice(*aInputTrack->GetSegment(),
std::min(inputTrackEndPoint, inputStart),
std::min(inputTrackEndPoint, inputEnd));
}
ApplyTrackDisabling(outputTrack->GetID(), segment);
for (uint32_t j = 0; j < mListeners.Length(); ++j) {
MediaStreamListener* l = mListeners[j];
l->NotifyQueuedTrackChanges(Graph(), outputTrack->GetID(),
outputStart, 0, *segment);
}
outputTrack->GetSegment()->AppendFrom(segment);
}
}
size_t
AudioNodeExternalInputStream::GetTrackMapEntry(const StreamBuffer::Track& aTrack,
GraphTime aFrom)
{
AudioSegment* segment = aTrack.Get<AudioSegment>();
// Check the map for an existing entry corresponding to the input track.
for (size_t i = 0; i < mTrackMap.Length(); ++i) {
TrackMapEntry* map = &mTrackMap[i];
if (map->mTrackID == aTrack.GetID()) {
return i;
}
}
// Determine channel count by finding the first entry with non-silent data.
AudioSegment::ChunkIterator ci(*segment);
while (!ci.IsEnded() && ci->IsNull()) {
ci.Next();
}
if (ci.IsEnded()) {
// The track is entirely silence so far, we can ignore it for now.
return nsTArray<TrackMapEntry>::NoIndex;
}
// Create a speex resampler with the same sample rate and number of channels
// as the track.
SpeexResamplerState* resampler = nullptr;
size_t channelCount = std::min((*ci).mChannelData.Length(),
WebAudioUtils::MaxChannelCount);
if (aTrack.GetRate() != mSampleRate) {
resampler = speex_resampler_init(channelCount,
aTrack.GetRate(), mSampleRate, SPEEX_RESAMPLER_QUALITY_DEFAULT, nullptr);
speex_resampler_skip_zeros(resampler);
}
TrackMapEntry* map = mTrackMap.AppendElement();
map->mEndOfConsumedInputTicks = 0;
map->mEndOfLastInputIntervalInInputStream = -1;
map->mEndOfLastInputIntervalInOutputStream = -1;
map->mSamplesPassedToResampler =
TimeToTicksRoundUp(aTrack.GetRate(), GraphTimeToStreamTime(aFrom));
map->mResampler = resampler;
map->mResamplerChannelCount = channelCount;
map->mTrackID = aTrack.GetID();
return mTrackMap.Length() - 1;
}
void
AudioNodeStream::FinishOutput()
{
if (IsFinishedOnGraphThread()) {
return;
}
StreamBuffer::Track* track = EnsureTrack();
track->SetEnded();
FinishOnGraphThread();
for (uint32_t j = 0; j < mListeners.Length(); ++j) {
MediaStreamListener* l = mListeners[j];
AudioSegment emptySegment;
l->NotifyQueuedTrackChanges(Graph(), AUDIO_NODE_STREAM_TRACK_ID,
IdealAudioRate(),
track->GetSegment()->GetDuration(),
MediaStreamListener::TRACK_EVENT_ENDED, emptySegment);
}
}
void
DOMHwMediaStream::SetImageSize(uint32_t width, uint32_t height)
{
#ifdef MOZ_WIDGET_GONK
OverlayImage::Data imgData;
imgData.mOverlayId = mOverlayImage->GetOverlayId();
imgData.mSize = IntSize(width, height);
mOverlayImage->SetData(imgData);
#endif
SourceMediaStream* srcStream = GetInputStream()->AsSourceStream();
StreamBuffer::Track* track = srcStream->FindTrack(TRACK_VIDEO_PRIMARY);
if (!track || !track->GetSegment()) {
return;
}
#ifdef MOZ_WIDGET_GONK
// Clear the old segment.
// Changing the existing content of segment is a Very BAD thing, and this way will
// confuse consumers of MediaStreams.
// It is only acceptable for DOMHwMediaStream
// because DOMHwMediaStream doesn't have consumers of TV streams currently.
track->GetSegment()->Clear();
// Change the image size.
const StreamTime delta = STREAM_TIME_MAX;
RefPtr<Image> image = static_cast<Image*>(mOverlayImage.get());
mozilla::gfx::IntSize size = image->GetSize();
VideoSegment segment;
segment.AppendFrame(image.forget(), delta, size);
srcStream->AppendToTrack(TRACK_VIDEO_PRIMARY, &segment);
#endif
}
void TrackUnionStream::EndTrack(uint32_t aIndex)
{
StreamBuffer::Track* outputTrack = mBuffer.FindTrack(mTrackMap[aIndex].mOutputTrackID);
if (!outputTrack || outputTrack->IsEnded())
return;
STREAM_LOG(LogLevel::Debug, ("TrackUnionStream %p ending track %d", this, outputTrack->GetID()));
for (uint32_t j = 0; j < mListeners.Length(); ++j) {
MediaStreamListener* l = mListeners[j];
StreamTime offset = outputTrack->GetSegment()->GetDuration();
nsAutoPtr<MediaSegment> segment;
segment = outputTrack->GetSegment()->CreateEmptyClone();
l->NotifyQueuedTrackChanges(Graph(), outputTrack->GetID(), offset,
MediaStreamListener::TRACK_EVENT_ENDED,
*segment,
mTrackMap[aIndex].mInputPort->GetSource(),
mTrackMap[aIndex].mInputTrackID);
}
outputTrack->SetEnded();
}
void TrackUnionStream::ProcessInput(GraphTime aFrom, GraphTime aTo, uint32_t aFlags)
{
if (IsFinishedOnGraphThread()) {
return;
}
nsAutoTArray<bool,8> mappedTracksFinished;
nsAutoTArray<bool,8> mappedTracksWithMatchingInputTracks;
for (uint32_t i = 0; i < mTrackMap.Length(); ++i) {
mappedTracksFinished.AppendElement(true);
mappedTracksWithMatchingInputTracks.AppendElement(false);
}
bool allFinished = !mInputs.IsEmpty();
bool allHaveCurrentData = !mInputs.IsEmpty();
for (uint32_t i = 0; i < mInputs.Length(); ++i) {
MediaStream* stream = mInputs[i]->GetSource();
if (!stream->IsFinishedOnGraphThread()) {
// XXX we really should check whether 'stream' has finished within time aTo,
// not just that it's finishing when all its queued data eventually runs
// out.
allFinished = false;
}
if (!stream->HasCurrentData()) {
allHaveCurrentData = false;
}
bool trackAdded = false;
for (StreamBuffer::TrackIter tracks(stream->GetStreamBuffer());
!tracks.IsEnded(); tracks.Next()) {
bool found = false;
for (uint32_t j = 0; j < mTrackMap.Length(); ++j) {
TrackMapEntry* map = &mTrackMap[j];
if (map->mInputPort == mInputs[i] && map->mInputTrackID == tracks->GetID()) {
bool trackFinished;
StreamBuffer::Track* outputTrack = mBuffer.FindTrack(map->mOutputTrackID);
if (!outputTrack || outputTrack->IsEnded()) {
trackFinished = true;
} else {
CopyTrackData(tracks.get(), j, aFrom, aTo, &trackFinished);
}
mappedTracksFinished[j] = trackFinished;
mappedTracksWithMatchingInputTracks[j] = true;
found = true;
break;
}
}
if (!found && (!mFilterCallback || mFilterCallback(tracks.get()))) {
bool trackFinished = false;
trackAdded = true;
uint32_t mapIndex = AddTrack(mInputs[i], tracks.get(), aFrom);
CopyTrackData(tracks.get(), mapIndex, aFrom, aTo, &trackFinished);
mappedTracksFinished.AppendElement(trackFinished);
mappedTracksWithMatchingInputTracks.AppendElement(true);
}
}
if (trackAdded) {
for (MediaStreamListener* l : mListeners) {
l->NotifyFinishedTrackCreation(Graph());
}
}
}
for (int32_t i = mTrackMap.Length() - 1; i >= 0; --i) {
if (mappedTracksFinished[i]) {
EndTrack(i);
} else {
allFinished = false;
}
if (!mappedTracksWithMatchingInputTracks[i]) {
mTrackMap.RemoveElementAt(i);
}
}
if (allFinished && mAutofinish && (aFlags & ALLOW_FINISH)) {
// All streams have finished and won't add any more tracks, and
// all our tracks have actually finished and been removed from our map,
// so we're finished now.
FinishOnGraphThread();
} else {
mBuffer.AdvanceKnownTracksTime(GraphTimeToStreamTime(aTo));
}
if (allHaveCurrentData) {
// We can make progress if we're not blocked
mHasCurrentData = true;
}
}
uint32_t TrackUnionStream::AddTrack(MediaInputPort* aPort, StreamBuffer::Track* aTrack,
GraphTime aFrom)
{
STREAM_LOG(LogLevel::Verbose, ("TrackUnionStream %p adding track %d for "
"input stream %p track %d, desired id %d",
this, aTrack->GetID(), aPort->GetSource(),
aTrack->GetID(),
aPort->GetDestinationTrackId()));
TrackID id;
if (IsTrackIDExplicit(id = aPort->GetDestinationTrackId())) {
MOZ_ASSERT(id >= mNextAvailableTrackID &&
mUsedTracks.BinaryIndexOf(id) == mUsedTracks.NoIndex,
"Desired destination id taken. Only provide a destination ID "
"if you can assure its availability, or we may not be able "
"to bind to the correct DOM-side track.");
#ifdef DEBUG
for (size_t i = 0; mInputs[i] != aPort; ++i) {
MOZ_ASSERT(mInputs[i]->GetSourceTrackId() != TRACK_ANY,
"You are adding a MediaInputPort with a track mapping "
"while there already exist generic MediaInputPorts for this "
"destination stream. This can lead to TrackID collisions!");
}
#endif
mUsedTracks.InsertElementSorted(id);
} else if ((id = aTrack->GetID()) &&
id > mNextAvailableTrackID &&
mUsedTracks.BinaryIndexOf(id) == mUsedTracks.NoIndex) {
// Input id available. Mark it used in mUsedTracks.
mUsedTracks.InsertElementSorted(id);
} else {
// No desired destination id and Input id taken, allocate a new one.
id = mNextAvailableTrackID;
// Update mNextAvailableTrackID and prune any mUsedTracks members it now
// covers.
while (1) {
if (!mUsedTracks.RemoveElementSorted(++mNextAvailableTrackID)) {
// Not in use. We're done.
break;
}
}
}
// Round up the track start time so the track, if anything, starts a
// little later than the true time. This means we'll have enough
// samples in our input stream to go just beyond the destination time.
StreamTime outputStart = GraphTimeToStreamTimeWithBlocking(aFrom);
nsAutoPtr<MediaSegment> segment;
segment = aTrack->GetSegment()->CreateEmptyClone();
for (uint32_t j = 0; j < mListeners.Length(); ++j) {
MediaStreamListener* l = mListeners[j];
l->NotifyQueuedTrackChanges(Graph(), id, outputStart,
MediaStreamListener::TRACK_EVENT_CREATED,
*segment,
aPort->GetSource(), aTrack->GetID());
}
segment->AppendNullData(outputStart);
StreamBuffer::Track* track =
&mBuffer.AddTrack(id, outputStart, segment.forget());
STREAM_LOG(LogLevel::Debug, ("TrackUnionStream %p added track %d for input stream %p track %d, start ticks %lld",
this, track->GetID(), aPort->GetSource(), aTrack->GetID(),
(long long)outputStart));
TrackMapEntry* map = mTrackMap.AppendElement();
map->mEndOfConsumedInputTicks = 0;
map->mEndOfLastInputIntervalInInputStream = -1;
map->mEndOfLastInputIntervalInOutputStream = -1;
map->mInputPort = aPort;
map->mInputTrackID = aTrack->GetID();
map->mOutputTrackID = track->GetID();
map->mSegment = aTrack->GetSegment()->CreateEmptyClone();
for (int32_t i = mPendingDirectTrackListeners.Length() - 1; i >= 0; --i) {
TrackBound<MediaStreamTrackDirectListener>& bound =
mPendingDirectTrackListeners[i];
if (bound.mTrackID != map->mOutputTrackID) {
continue;
}
MediaStream* source = map->mInputPort->GetSource();
map->mOwnedDirectListeners.AppendElement(bound.mListener);
if (mDisabledTrackIDs.Contains(bound.mTrackID)) {
bound.mListener->IncreaseDisabled();
}
STREAM_LOG(LogLevel::Debug, ("TrackUnionStream %p adding direct listener "
"%p for track %d. Forwarding to input "
"stream %p track %d.",
this, bound.mListener.get(), bound.mTrackID,
source, map->mInputTrackID));
source->AddDirectTrackListenerImpl(bound.mListener.forget(),
map->mInputTrackID);
mPendingDirectTrackListeners.RemoveElementAt(i);
}
return mTrackMap.Length() - 1;
}