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293 lines
11 KiB
C++
293 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "MediaStreamGraphImpl.h"
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#include "mozilla/MathAlgorithms.h"
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#include "mozilla/unused.h"
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#include "AudioSegment.h"
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#include "VideoSegment.h"
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#include "nsContentUtils.h"
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#include "nsIAppShell.h"
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#include "nsIObserver.h"
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#include "nsPrintfCString.h"
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#include "nsServiceManagerUtils.h"
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#include "nsWidgetsCID.h"
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#include "prerror.h"
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#include "mozilla/Logging.h"
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#include "mozilla/Attributes.h"
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#include "TrackUnionStream.h"
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#include "ImageContainer.h"
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#include "AudioChannelService.h"
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#include "AudioNodeEngine.h"
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#include "AudioNodeStream.h"
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#include "AudioNodeExternalInputStream.h"
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#include "webaudio/MediaStreamAudioDestinationNode.h"
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#include <algorithm>
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#include "DOMMediaStream.h"
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#include "GeckoProfiler.h"
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#ifdef MOZ_WEBRTC
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#include "AudioOutputObserver.h"
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#endif
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using namespace mozilla::layers;
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using namespace mozilla::dom;
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using namespace mozilla::gfx;
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namespace mozilla {
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#ifdef STREAM_LOG
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#undef STREAM_LOG
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#endif
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PRLogModuleInfo* gTrackUnionStreamLog;
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#define STREAM_LOG(type, msg) MOZ_LOG(gTrackUnionStreamLog, type, msg)
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TrackUnionStream::TrackUnionStream(DOMMediaStream* aWrapper) :
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ProcessedMediaStream(aWrapper)
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{
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if (!gTrackUnionStreamLog) {
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gTrackUnionStreamLog = PR_NewLogModule("TrackUnionStream");
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}
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}
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void TrackUnionStream::RemoveInput(MediaInputPort* aPort)
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{
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for (int32_t i = mTrackMap.Length() - 1; i >= 0; --i) {
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if (mTrackMap[i].mInputPort == aPort) {
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EndTrack(i);
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mTrackMap.RemoveElementAt(i);
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}
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}
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ProcessedMediaStream::RemoveInput(aPort);
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}
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void TrackUnionStream::ProcessInput(GraphTime aFrom, GraphTime aTo, uint32_t aFlags)
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{
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if (IsFinishedOnGraphThread()) {
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return;
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}
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nsAutoTArray<bool,8> mappedTracksFinished;
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nsAutoTArray<bool,8> mappedTracksWithMatchingInputTracks;
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for (uint32_t i = 0; i < mTrackMap.Length(); ++i) {
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mappedTracksFinished.AppendElement(true);
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mappedTracksWithMatchingInputTracks.AppendElement(false);
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}
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bool allFinished = !mInputs.IsEmpty();
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bool allHaveCurrentData = !mInputs.IsEmpty();
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for (uint32_t i = 0; i < mInputs.Length(); ++i) {
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MediaStream* stream = mInputs[i]->GetSource();
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if (!stream->IsFinishedOnGraphThread()) {
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// XXX we really should check whether 'stream' has finished within time aTo,
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// not just that it's finishing when all its queued data eventually runs
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// out.
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allFinished = false;
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}
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if (!stream->HasCurrentData()) {
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allHaveCurrentData = false;
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}
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bool trackAdded = false;
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for (StreamBuffer::TrackIter tracks(stream->GetStreamBuffer());
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!tracks.IsEnded(); tracks.Next()) {
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bool found = false;
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for (uint32_t j = 0; j < mTrackMap.Length(); ++j) {
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TrackMapEntry* map = &mTrackMap[j];
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if (map->mInputPort == mInputs[i] && map->mInputTrackID == tracks->GetID()) {
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bool trackFinished;
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StreamBuffer::Track* outputTrack = mBuffer.FindTrack(map->mOutputTrackID);
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if (!outputTrack || outputTrack->IsEnded()) {
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trackFinished = true;
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} else {
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CopyTrackData(tracks.get(), j, aFrom, aTo, &trackFinished);
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}
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mappedTracksFinished[j] = trackFinished;
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mappedTracksWithMatchingInputTracks[j] = true;
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found = true;
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break;
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}
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}
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if (!found) {
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bool trackFinished = false;
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trackAdded = true;
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uint32_t mapIndex = AddTrack(mInputs[i], tracks.get(), aFrom);
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CopyTrackData(tracks.get(), mapIndex, aFrom, aTo, &trackFinished);
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mappedTracksFinished.AppendElement(trackFinished);
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mappedTracksWithMatchingInputTracks.AppendElement(true);
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}
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}
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if (trackAdded) {
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for (MediaStreamListener* l : mListeners) {
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l->NotifyFinishedTrackCreation(Graph());
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}
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}
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}
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for (int32_t i = mTrackMap.Length() - 1; i >= 0; --i) {
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if (mappedTracksFinished[i]) {
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EndTrack(i);
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} else {
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allFinished = false;
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}
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if (!mappedTracksWithMatchingInputTracks[i]) {
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mTrackMap.RemoveElementAt(i);
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}
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}
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if (allFinished && mAutofinish && (aFlags & ALLOW_FINISH)) {
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// All streams have finished and won't add any more tracks, and
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// all our tracks have actually finished and been removed from our map,
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// so we're finished now.
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FinishOnGraphThread();
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} else {
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mBuffer.AdvanceKnownTracksTime(GraphTimeToStreamTime(aTo));
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}
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if (allHaveCurrentData) {
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// We can make progress if we're not blocked
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mHasCurrentData = true;
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}
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}
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// Forward SetTrackEnabled(output_track_id, enabled) to the Source MediaStream,
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// translating the output track ID into the correct ID in the source.
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void TrackUnionStream::ForwardTrackEnabled(TrackID aOutputID, bool aEnabled)
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{
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for (int32_t i = mTrackMap.Length() - 1; i >= 0; --i) {
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if (mTrackMap[i].mOutputTrackID == aOutputID) {
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mTrackMap[i].mInputPort->GetSource()->
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SetTrackEnabled(mTrackMap[i].mInputTrackID, aEnabled);
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}
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}
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}
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uint32_t TrackUnionStream::AddTrack(MediaInputPort* aPort, StreamBuffer::Track* aTrack,
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GraphTime aFrom)
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{
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// Use the ID of the source track if it's not already assigned to a track,
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// otherwise allocate a new unique ID.
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TrackID id = aTrack->GetID();
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TrackID maxTrackID = 0;
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for (uint32_t i = 0; i < mTrackMap.Length(); ++i) {
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TrackID outID = mTrackMap[i].mOutputTrackID;
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maxTrackID = std::max(maxTrackID, outID);
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}
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// Note: we might have removed it here, but it might still be in the
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// StreamBuffer if the TrackUnionStream sees its input stream flip from
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// A to B, where both A and B have a track with the same ID
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while (1) {
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// search until we find one not in use here, and not in mBuffer
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if (!mBuffer.FindTrack(id)) {
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break;
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}
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id = ++maxTrackID;
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}
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// Round up the track start time so the track, if anything, starts a
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// little later than the true time. This means we'll have enough
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// samples in our input stream to go just beyond the destination time.
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StreamTime outputStart = GraphTimeToStreamTime(aFrom);
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nsAutoPtr<MediaSegment> segment;
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segment = aTrack->GetSegment()->CreateEmptyClone();
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for (uint32_t j = 0; j < mListeners.Length(); ++j) {
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MediaStreamListener* l = mListeners[j];
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l->NotifyQueuedTrackChanges(Graph(), id, outputStart,
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MediaStreamListener::TRACK_EVENT_CREATED,
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*segment);
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}
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segment->AppendNullData(outputStart);
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StreamBuffer::Track* track =
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&mBuffer.AddTrack(id, outputStart, segment.forget());
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STREAM_LOG(PR_LOG_DEBUG, ("TrackUnionStream %p adding track %d for input stream %p track %d, start ticks %lld",
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this, id, aPort->GetSource(), aTrack->GetID(),
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(long long)outputStart));
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TrackMapEntry* map = mTrackMap.AppendElement();
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map->mEndOfConsumedInputTicks = 0;
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map->mEndOfLastInputIntervalInInputStream = -1;
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map->mEndOfLastInputIntervalInOutputStream = -1;
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map->mInputPort = aPort;
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map->mInputTrackID = aTrack->GetID();
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map->mOutputTrackID = track->GetID();
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map->mSegment = aTrack->GetSegment()->CreateEmptyClone();
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return mTrackMap.Length() - 1;
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}
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void TrackUnionStream::EndTrack(uint32_t aIndex)
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{
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StreamBuffer::Track* outputTrack = mBuffer.FindTrack(mTrackMap[aIndex].mOutputTrackID);
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if (!outputTrack || outputTrack->IsEnded())
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return;
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for (uint32_t j = 0; j < mListeners.Length(); ++j) {
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MediaStreamListener* l = mListeners[j];
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StreamTime offset = outputTrack->GetSegment()->GetDuration();
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nsAutoPtr<MediaSegment> segment;
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segment = outputTrack->GetSegment()->CreateEmptyClone();
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l->NotifyQueuedTrackChanges(Graph(), outputTrack->GetID(), offset,
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MediaStreamListener::TRACK_EVENT_ENDED,
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*segment);
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}
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outputTrack->SetEnded();
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}
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void TrackUnionStream::CopyTrackData(StreamBuffer::Track* aInputTrack,
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uint32_t aMapIndex, GraphTime aFrom, GraphTime aTo,
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bool* aOutputTrackFinished)
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{
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TrackMapEntry* map = &mTrackMap[aMapIndex];
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StreamBuffer::Track* outputTrack = mBuffer.FindTrack(map->mOutputTrackID);
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MOZ_ASSERT(outputTrack && !outputTrack->IsEnded(), "Can't copy to ended track");
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MediaSegment* segment = map->mSegment;
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MediaStream* source = map->mInputPort->GetSource();
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GraphTime next;
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*aOutputTrackFinished = false;
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for (GraphTime t = aFrom; t < aTo; t = next) {
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MediaInputPort::InputInterval interval = map->mInputPort->GetNextInputInterval(t);
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interval.mEnd = std::min(interval.mEnd, aTo);
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StreamTime inputEnd = source->GraphTimeToStreamTime(interval.mEnd);
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StreamTime inputTrackEndPoint = STREAM_TIME_MAX;
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if (aInputTrack->IsEnded() &&
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aInputTrack->GetEnd() <= inputEnd) {
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inputTrackEndPoint = aInputTrack->GetEnd();
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*aOutputTrackFinished = true;
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}
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if (interval.mStart >= interval.mEnd) {
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break;
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}
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StreamTime ticks = interval.mEnd - interval.mStart;
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next = interval.mEnd;
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StreamTime outputStart = outputTrack->GetEnd();
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if (interval.mInputIsBlocked) {
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// Maybe the input track ended?
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segment->AppendNullData(ticks);
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STREAM_LOG(PR_LOG_VERBOSE, ("TrackUnionStream %p appending %lld ticks of null data to track %d",
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this, (long long)ticks, outputTrack->GetID()));
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} else if (InMutedCycle()) {
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segment->AppendNullData(ticks);
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} else {
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if (GraphImpl()->StreamSuspended(source)) {
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segment->AppendNullData(aTo - aFrom);
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} else {
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MOZ_ASSERT(outputTrack->GetEnd() == GraphTimeToStreamTime(interval.mStart),
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"Samples missing");
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StreamTime inputStart = source->GraphTimeToStreamTime(interval.mStart);
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segment->AppendSlice(*aInputTrack->GetSegment(),
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std::min(inputTrackEndPoint, inputStart),
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std::min(inputTrackEndPoint, inputEnd));
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}
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}
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ApplyTrackDisabling(outputTrack->GetID(), segment);
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for (uint32_t j = 0; j < mListeners.Length(); ++j) {
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MediaStreamListener* l = mListeners[j];
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l->NotifyQueuedTrackChanges(Graph(), outputTrack->GetID(),
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outputStart, 0, *segment);
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}
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outputTrack->GetSegment()->AppendFrom(segment);
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}
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}
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}
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