gecko-dev/dom/media/TrackUnionStream.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "MediaStreamGraphImpl.h"
#include "MediaStreamListener.h"
#include "mozilla/MathAlgorithms.h"
#include "mozilla/Unused.h"
#include "AudioSegment.h"
#include "VideoSegment.h"
#include "nsContentUtils.h"
#include "nsIAppShell.h"
#include "nsIObserver.h"
#include "nsPrintfCString.h"
#include "nsServiceManagerUtils.h"
#include "nsWidgetsCID.h"
#include "prerror.h"
#include "mozilla/Logging.h"
#include "mozilla/Attributes.h"
#include "TrackUnionStream.h"
#include "ImageContainer.h"
#include "AudioChannelService.h"
#include "AudioNodeEngine.h"
#include "AudioNodeStream.h"
#include "AudioNodeExternalInputStream.h"
#include "webaudio/MediaStreamAudioDestinationNode.h"
#include <algorithm>
#include "DOMMediaStream.h"
#include "GeckoProfiler.h"
#ifdef MOZ_WEBRTC
#include "AudioOutputObserver.h"
#endif
using namespace mozilla::layers;
using namespace mozilla::dom;
using namespace mozilla::gfx;
namespace mozilla {
#ifdef STREAM_LOG
#undef STREAM_LOG
#endif
LazyLogModule gTrackUnionStreamLog("TrackUnionStream");
#define STREAM_LOG(type, msg) MOZ_LOG(gTrackUnionStreamLog, type, msg)
TrackUnionStream::TrackUnionStream() :
ProcessedMediaStream(), mNextAvailableTrackID(1)
{
}
void TrackUnionStream::RemoveInput(MediaInputPort* aPort)
{
STREAM_LOG(LogLevel::Debug, ("TrackUnionStream %p removing input %p", this, aPort));
for (int32_t i = mTrackMap.Length() - 1; i >= 0; --i) {
if (mTrackMap[i].mInputPort == aPort) {
STREAM_LOG(LogLevel::Debug, ("TrackUnionStream %p removing trackmap entry %d", this, i));
EndTrack(i);
for (auto listener : mTrackMap[i].mOwnedDirectListeners) {
// Remove listeners while the entry still exists.
RemoveDirectTrackListenerImpl(listener, mTrackMap[i].mOutputTrackID);
}
mTrackMap.RemoveElementAt(i);
}
}
ProcessedMediaStream::RemoveInput(aPort);
}
void TrackUnionStream::ProcessInput(GraphTime aFrom, GraphTime aTo, uint32_t aFlags)
{
if (IsFinishedOnGraphThread()) {
return;
}
AutoTArray<bool,8> mappedTracksFinished;
AutoTArray<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 (StreamTracks::TrackIter tracks(stream->GetStreamTracks());
!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 = false;
StreamTracks::Track* outputTrack = mTracks.FindTrack(map->mOutputTrackID);
found = true;
if (!outputTrack || outputTrack->IsEnded() ||
!mInputs[i]->PassTrackThrough(tracks->GetID())) {
trackFinished = true;
} else {
CopyTrackData(tracks.get(), j, aFrom, aTo, &trackFinished);
}
mappedTracksFinished[j] = trackFinished;
mappedTracksWithMatchingInputTracks[j] = true;
break;
}
}
if (!found && mInputs[i]->AllowCreationOf(tracks->GetID())) {
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]) {
for (auto listener : mTrackMap[i].mOwnedDirectListeners) {
// Remove listeners while the entry still exists.
RemoveDirectTrackListenerImpl(listener, mTrackMap[i].mOutputTrackID);
}
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 {
mTracks.AdvanceKnownTracksTime(GraphTimeToStreamTimeWithBlocking(aTo));
}
if (allHaveCurrentData) {
// We can make progress if we're not blocked
mHasCurrentData = true;
}
}
uint32_t TrackUnionStream::AddTrack(MediaInputPort* aPort, StreamTracks::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,
TrackEventCommand::TRACK_EVENT_CREATED,
*segment,
aPort->GetSource(), aTrack->GetID());
}
segment->AppendNullData(outputStart);
StreamTracks::Track* track =
&mTracks.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<DirectMediaStreamTrackListener>& bound =
mPendingDirectTrackListeners[i];
if (bound.mTrackID != map->mOutputTrackID) {
continue;
}
MediaStream* source = map->mInputPort->GetSource();
map->mOwnedDirectListeners.AppendElement(bound.mListener);
DisabledTrackMode currentMode = GetDisabledTrackMode(bound.mTrackID);
if (currentMode != DisabledTrackMode::ENABLED) {
bound.mListener->IncreaseDisabled(currentMode);
}
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;
}
void TrackUnionStream::EndTrack(uint32_t aIndex)
{
StreamTracks::Track* outputTrack = mTracks.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,
TrackEventCommand::TRACK_EVENT_ENDED,
*segment,
mTrackMap[aIndex].mInputPort->GetSource(),
mTrackMap[aIndex].mInputTrackID);
}
for (TrackBound<MediaStreamTrackListener>& b : mTrackListeners) {
if (b.mTrackID == outputTrack->GetID()) {
b.mListener->NotifyEnded();
}
}
outputTrack->SetEnded();
}
void TrackUnionStream::CopyTrackData(StreamTracks::Track* aInputTrack,
uint32_t aMapIndex, GraphTime aFrom, GraphTime aTo,
bool* aOutputTrackFinished)
{
TrackMapEntry* map = &mTrackMap[aMapIndex];
StreamTracks::Track* outputTrack = mTracks.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->GraphTimeToStreamTimeWithBlocking(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(LogLevel::Verbose, ("TrackUnionStream %p appending %lld ticks of null data to track %d",
this, (long long)ticks, outputTrack->GetID()));
} else if (InMutedCycle()) {
segment->AppendNullData(ticks);
} else {
if (source->IsSuspended()) {
segment->AppendNullData(aTo - aFrom);
} else {
MOZ_ASSERT(outputTrack->GetEnd() == GraphTimeToStreamTimeWithBlocking(interval.mStart),
"Samples missing");
StreamTime inputStart = source->GraphTimeToStreamTimeWithBlocking(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];
// Separate Audio and Video.
if (segment->GetType() == MediaSegment::AUDIO) {
l->NotifyQueuedAudioData(Graph(), outputTrack->GetID(),
outputStart,
*static_cast<AudioSegment*>(segment),
map->mInputPort->GetSource(),
map->mInputTrackID);
}
}
for (TrackBound<MediaStreamTrackListener>& b : mTrackListeners) {
if (b.mTrackID != outputTrack->GetID()) {
continue;
}
b.mListener->NotifyQueuedChanges(Graph(), outputStart, *segment);
}
outputTrack->GetSegment()->AppendFrom(segment);
}
}
void
TrackUnionStream::SetTrackEnabledImpl(TrackID aTrackID, DisabledTrackMode aMode) {
bool enabled = aMode == DisabledTrackMode::ENABLED;
for (TrackMapEntry& entry : mTrackMap) {
if (entry.mOutputTrackID == aTrackID) {
STREAM_LOG(LogLevel::Info, ("TrackUnionStream %p track %d was explicitly %s",
this, aTrackID, enabled ? "enabled" : "disabled"));
for (DirectMediaStreamTrackListener* listener : entry.mOwnedDirectListeners) {
DisabledTrackMode oldMode = GetDisabledTrackMode(aTrackID);
bool oldEnabled = oldMode == DisabledTrackMode::ENABLED;
if (!oldEnabled && enabled) {
STREAM_LOG(LogLevel::Debug, ("TrackUnionStream %p track %d setting "
"direct listener enabled",
this, aTrackID));
listener->DecreaseDisabled(oldMode);
} else if (oldEnabled && !enabled) {
STREAM_LOG(LogLevel::Debug, ("TrackUnionStream %p track %d setting "
"direct listener disabled",
this, aTrackID));
listener->IncreaseDisabled(aMode);
}
}
}
}
MediaStream::SetTrackEnabledImpl(aTrackID, aMode);
}
MediaStream*
TrackUnionStream::GetInputStreamFor(TrackID aTrackID)
{
for (TrackMapEntry& entry : mTrackMap) {
if (entry.mOutputTrackID == aTrackID && entry.mInputPort) {
return entry.mInputPort->GetSource();
}
}
return nullptr;
}
TrackID
TrackUnionStream::GetInputTrackIDFor(TrackID aTrackID)
{
for (TrackMapEntry& entry : mTrackMap) {
if (entry.mOutputTrackID == aTrackID) {
return entry.mInputTrackID;
}
}
return TRACK_NONE;
}
void
TrackUnionStream::AddDirectTrackListenerImpl(already_AddRefed<DirectMediaStreamTrackListener> aListener,
TrackID aTrackID)
{
RefPtr<DirectMediaStreamTrackListener> listener = aListener;
for (TrackMapEntry& entry : mTrackMap) {
if (entry.mOutputTrackID == aTrackID) {
MediaStream* source = entry.mInputPort->GetSource();
STREAM_LOG(LogLevel::Debug, ("TrackUnionStream %p adding direct listener "
"%p for track %d. Forwarding to input "
"stream %p track %d.",
this, listener.get(), aTrackID, source,
entry.mInputTrackID));
entry.mOwnedDirectListeners.AppendElement(listener);
DisabledTrackMode currentMode = GetDisabledTrackMode(aTrackID);
if (currentMode != DisabledTrackMode::ENABLED) {
listener->IncreaseDisabled(currentMode);
}
source->AddDirectTrackListenerImpl(listener.forget(),
entry.mInputTrackID);
return;
}
}
TrackBound<DirectMediaStreamTrackListener>* bound =
mPendingDirectTrackListeners.AppendElement();
bound->mListener = listener.forget();
bound->mTrackID = aTrackID;
}
void
TrackUnionStream::RemoveDirectTrackListenerImpl(DirectMediaStreamTrackListener* aListener,
TrackID aTrackID)
{
for (TrackMapEntry& entry : mTrackMap) {
// OutputTrackID is unique to this stream so we only need to do this once.
if (entry.mOutputTrackID != aTrackID) {
continue;
}
for (size_t i = 0; i < entry.mOwnedDirectListeners.Length(); ++i) {
if (entry.mOwnedDirectListeners[i] == aListener) {
STREAM_LOG(LogLevel::Debug, ("TrackUnionStream %p removing direct "
"listener %p for track %d, forwarding "
"to input stream %p track %d",
this, aListener, aTrackID,
entry.mInputPort->GetSource(),
entry.mInputTrackID));
DisabledTrackMode currentMode = GetDisabledTrackMode(aTrackID);
if (currentMode != DisabledTrackMode::ENABLED) {
// Reset the listener's state.
aListener->DecreaseDisabled(currentMode);
}
entry.mOwnedDirectListeners.RemoveElementAt(i);
break;
}
}
// Forward to the input
MediaStream* source = entry.mInputPort->GetSource();
source->RemoveDirectTrackListenerImpl(aListener, entry.mInputTrackID);
return;
}
for (size_t i = 0; i < mPendingDirectTrackListeners.Length(); ++i) {
TrackBound<DirectMediaStreamTrackListener>& bound =
mPendingDirectTrackListeners[i];
if (bound.mListener == aListener && bound.mTrackID == aTrackID) {
mPendingDirectTrackListeners.RemoveElementAt(i);
return;
}
}
}
} // namespace mozilla