mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 22:55:23 +00:00
3394 lines
109 KiB
C++
3394 lines
109 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 "nsIObserver.h"
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#include "nsPrintfCString.h"
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#include "nsServiceManagerUtils.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 "AudioCaptureStream.h"
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#include "AudioChannelService.h"
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#include "AudioNodeStream.h"
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#include "AudioNodeExternalInputStream.h"
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#include "mozilla/dom/AudioContextBinding.h"
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#include "mozilla/media/MediaUtils.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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#include "mozilla/unused.h"
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#ifdef MOZ_WEBRTC
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#include "AudioOutputObserver.h"
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#endif
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#include "mtransport/runnable_utils.h"
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#include "webaudio/blink/HRTFDatabaseLoader.h"
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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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LazyLogModule gMediaStreamGraphLog("MediaStreamGraph");
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#define STREAM_LOG(type, msg) MOZ_LOG(gMediaStreamGraphLog, type, msg)
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// #define ENABLE_LIFECYCLE_LOG
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// We don't use NSPR log here because we want this interleaved with adb logcat
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// on Android/B2G
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#ifdef ENABLE_LIFECYCLE_LOG
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# ifdef ANDROID
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# include "android/log.h"
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# define LIFECYCLE_LOG(...) __android_log_print(ANDROID_LOG_INFO, "Gecko - MSG", ## __VA_ARGS__); printf(__VA_ARGS__);printf("\n");
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# else
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# define LIFECYCLE_LOG(...) printf(__VA_ARGS__);printf("\n");
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# endif
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#else
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# define LIFECYCLE_LOG(...)
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#endif
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/**
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* A hash table containing the graph instances, one per AudioChannel.
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*/
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static nsDataHashtable<nsUint32HashKey, MediaStreamGraphImpl*> gGraphs;
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MediaStreamGraphImpl::~MediaStreamGraphImpl()
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{
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NS_ASSERTION(IsEmpty(),
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"All streams should have been destroyed by messages from the main thread");
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STREAM_LOG(LogLevel::Debug, ("MediaStreamGraph %p destroyed", this));
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LIFECYCLE_LOG("MediaStreamGraphImpl::~MediaStreamGraphImpl\n");
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}
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void
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MediaStreamGraphImpl::FinishStream(MediaStream* aStream)
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{
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if (aStream->mFinished)
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return;
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STREAM_LOG(LogLevel::Debug, ("MediaStream %p will finish", aStream));
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aStream->mFinished = true;
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aStream->mBuffer.AdvanceKnownTracksTime(STREAM_TIME_MAX);
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SetStreamOrderDirty();
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}
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void
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MediaStreamGraphImpl::AddStreamGraphThread(MediaStream* aStream)
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{
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aStream->mBufferStartTime = mProcessedTime;
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if (aStream->IsSuspended()) {
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mSuspendedStreams.AppendElement(aStream);
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STREAM_LOG(LogLevel::Debug, ("Adding media stream %p to the graph, in the suspended stream array", aStream));
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} else {
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mStreams.AppendElement(aStream);
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STREAM_LOG(LogLevel::Debug, ("Adding media stream %p to the graph", aStream));
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}
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SetStreamOrderDirty();
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}
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void
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MediaStreamGraphImpl::RemoveStreamGraphThread(MediaStream* aStream)
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{
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// Remove references in mStreamUpdates before we allow aStream to die.
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// Pending updates are not needed (since the main thread has already given
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// up the stream) so we will just drop them.
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{
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MonitorAutoLock lock(mMonitor);
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for (uint32_t i = 0; i < mStreamUpdates.Length(); ++i) {
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if (mStreamUpdates[i].mStream == aStream) {
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mStreamUpdates[i].mStream = nullptr;
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}
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}
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}
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// Ensure that mFirstCycleBreaker and mMixer are updated when necessary.
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SetStreamOrderDirty();
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if (aStream->IsSuspended()) {
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mSuspendedStreams.RemoveElement(aStream);
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} else {
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mStreams.RemoveElement(aStream);
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}
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NS_RELEASE(aStream); // probably destroying it
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STREAM_LOG(LogLevel::Debug, ("Removing media stream %p from the graph", aStream));
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}
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void
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MediaStreamGraphImpl::ExtractPendingInput(SourceMediaStream* aStream,
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GraphTime aDesiredUpToTime,
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bool* aEnsureNextIteration)
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{
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bool finished;
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{
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MutexAutoLock lock(aStream->mMutex);
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if (aStream->mPullEnabled && !aStream->mFinished &&
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!aStream->mListeners.IsEmpty()) {
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// Compute how much stream time we'll need assuming we don't block
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// the stream at all.
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StreamTime t = aStream->GraphTimeToStreamTime(aDesiredUpToTime);
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STREAM_LOG(LogLevel::Verbose, ("Calling NotifyPull aStream=%p t=%f current end=%f", aStream,
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MediaTimeToSeconds(t),
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MediaTimeToSeconds(aStream->mBuffer.GetEnd())));
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if (t > aStream->mBuffer.GetEnd()) {
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*aEnsureNextIteration = true;
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#ifdef DEBUG
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if (aStream->mListeners.Length() == 0) {
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STREAM_LOG(LogLevel::Error, ("No listeners in NotifyPull aStream=%p desired=%f current end=%f",
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aStream, MediaTimeToSeconds(t),
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MediaTimeToSeconds(aStream->mBuffer.GetEnd())));
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aStream->DumpTrackInfo();
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}
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#endif
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for (uint32_t j = 0; j < aStream->mListeners.Length(); ++j) {
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MediaStreamListener* l = aStream->mListeners[j];
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{
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MutexAutoUnlock unlock(aStream->mMutex);
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l->NotifyPull(this, t);
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}
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}
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}
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}
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finished = aStream->mUpdateFinished;
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bool notifiedTrackCreated = false;
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for (int32_t i = aStream->mUpdateTracks.Length() - 1; i >= 0; --i) {
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SourceMediaStream::TrackData* data = &aStream->mUpdateTracks[i];
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aStream->ApplyTrackDisabling(data->mID, data->mData);
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for (MediaStreamListener* l : aStream->mListeners) {
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StreamTime offset = (data->mCommands & SourceMediaStream::TRACK_CREATE)
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? data->mStart : aStream->mBuffer.FindTrack(data->mID)->GetSegment()->GetDuration();
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l->NotifyQueuedTrackChanges(this, data->mID,
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offset, data->mCommands, *data->mData);
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}
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if (data->mCommands & SourceMediaStream::TRACK_CREATE) {
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MediaSegment* segment = data->mData.forget();
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STREAM_LOG(LogLevel::Debug, ("SourceMediaStream %p creating track %d, start %lld, initial end %lld",
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aStream, data->mID, int64_t(data->mStart),
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int64_t(segment->GetDuration())));
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data->mEndOfFlushedData += segment->GetDuration();
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aStream->mBuffer.AddTrack(data->mID, data->mStart, segment);
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// The track has taken ownership of data->mData, so let's replace
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// data->mData with an empty clone.
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data->mData = segment->CreateEmptyClone();
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data->mCommands &= ~SourceMediaStream::TRACK_CREATE;
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notifiedTrackCreated = true;
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} else if (data->mData->GetDuration() > 0) {
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MediaSegment* dest = aStream->mBuffer.FindTrack(data->mID)->GetSegment();
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STREAM_LOG(LogLevel::Verbose, ("SourceMediaStream %p track %d, advancing end from %lld to %lld",
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aStream, data->mID,
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int64_t(dest->GetDuration()),
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int64_t(dest->GetDuration() + data->mData->GetDuration())));
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data->mEndOfFlushedData += data->mData->GetDuration();
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dest->AppendFrom(data->mData);
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}
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if (data->mCommands & SourceMediaStream::TRACK_END) {
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aStream->mBuffer.FindTrack(data->mID)->SetEnded();
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aStream->mUpdateTracks.RemoveElementAt(i);
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}
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}
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if (notifiedTrackCreated) {
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for (MediaStreamListener* l : aStream->mListeners) {
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l->NotifyFinishedTrackCreation(this);
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}
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}
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if (!aStream->mFinished) {
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aStream->mBuffer.AdvanceKnownTracksTime(aStream->mUpdateKnownTracksTime);
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}
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}
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if (aStream->mBuffer.GetEnd() > 0) {
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aStream->mHasCurrentData = true;
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}
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if (finished) {
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FinishStream(aStream);
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}
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}
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StreamTime
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MediaStreamGraphImpl::GraphTimeToStreamTimeWithBlocking(MediaStream* aStream,
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GraphTime aTime)
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{
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MOZ_ASSERT(aTime <= mStateComputedTime,
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"Don't ask about times where we haven't made blocking decisions yet");
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return std::max<StreamTime>(0,
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std::min(aTime, aStream->mStartBlocking) - aStream->mBufferStartTime);
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}
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GraphTime
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MediaStreamGraphImpl::IterationEnd() const
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{
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return CurrentDriver()->IterationEnd();
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}
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void
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MediaStreamGraphImpl::UpdateCurrentTimeForStreams(GraphTime aPrevCurrentTime)
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{
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for (MediaStream* stream : AllStreams()) {
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bool isAnyBlocked = stream->mStartBlocking < mStateComputedTime;
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bool isAnyUnblocked = stream->mStartBlocking > aPrevCurrentTime;
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// Calculate blocked time and fire Blocked/Unblocked events
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GraphTime blockedTime = mStateComputedTime - stream->mStartBlocking;
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NS_ASSERTION(blockedTime >= 0, "Error in blocking time");
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stream->AdvanceTimeVaryingValuesToCurrentTime(mStateComputedTime,
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blockedTime);
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STREAM_LOG(LogLevel::Verbose,
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("MediaStream %p bufferStartTime=%f blockedTime=%f", stream,
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MediaTimeToSeconds(stream->mBufferStartTime),
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MediaTimeToSeconds(blockedTime)));
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stream->mStartBlocking = mStateComputedTime;
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if (isAnyUnblocked && stream->mNotifiedBlocked) {
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for (uint32_t j = 0; j < stream->mListeners.Length(); ++j) {
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MediaStreamListener* l = stream->mListeners[j];
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l->NotifyBlockingChanged(this, MediaStreamListener::UNBLOCKED);
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}
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stream->mNotifiedBlocked = false;
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}
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if (isAnyBlocked && !stream->mNotifiedBlocked) {
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for (uint32_t j = 0; j < stream->mListeners.Length(); ++j) {
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MediaStreamListener* l = stream->mListeners[j];
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l->NotifyBlockingChanged(this, MediaStreamListener::BLOCKED);
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}
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stream->mNotifiedBlocked = true;
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}
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if (isAnyUnblocked) {
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NS_ASSERTION(!stream->mNotifiedFinished,
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"Shouldn't have already notified of finish *and* have output!");
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for (uint32_t j = 0; j < stream->mListeners.Length(); ++j) {
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MediaStreamListener* l = stream->mListeners[j];
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l->NotifyOutput(this, mProcessedTime);
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}
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}
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// The stream is fully finished when all of its track data has been played
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// out.
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if (stream->mFinished && !stream->mNotifiedFinished &&
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mProcessedTime >=
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stream->StreamTimeToGraphTime(stream->GetStreamBuffer().GetAllTracksEnd())) {
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stream->mNotifiedFinished = true;
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SetStreamOrderDirty();
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for (uint32_t j = 0; j < stream->mListeners.Length(); ++j) {
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MediaStreamListener* l = stream->mListeners[j];
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l->NotifyEvent(this, MediaStreamListener::EVENT_FINISHED);
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}
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}
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}
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}
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GraphTime
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MediaStreamGraphImpl::WillUnderrun(MediaStream* aStream,
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GraphTime aEndBlockingDecisions)
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{
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// Finished streams can't underrun. ProcessedMediaStreams also can't cause
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// underrun currently, since we'll always be able to produce data for them
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// unless they block on some other stream.
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if (aStream->mFinished || aStream->AsProcessedStream()) {
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return aEndBlockingDecisions;
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}
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// This stream isn't finished or suspended. We don't need to call
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// StreamTimeToGraphTime since an underrun is the only thing that can block
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// it.
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GraphTime bufferEnd = aStream->GetBufferEnd() + aStream->mBufferStartTime;
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#ifdef DEBUG
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if (bufferEnd < mProcessedTime) {
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STREAM_LOG(LogLevel::Error, ("MediaStream %p underrun, "
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"bufferEnd %f < mProcessedTime %f (%lld < %lld), Streamtime %lld",
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aStream, MediaTimeToSeconds(bufferEnd), MediaTimeToSeconds(mProcessedTime),
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bufferEnd, mProcessedTime, aStream->GetBufferEnd()));
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aStream->DumpTrackInfo();
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NS_ASSERTION(bufferEnd >= mProcessedTime, "Buffer underran");
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}
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#endif
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return std::min(bufferEnd, aEndBlockingDecisions);
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}
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namespace {
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// Value of mCycleMarker for unvisited streams in cycle detection.
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const uint32_t NOT_VISITED = UINT32_MAX;
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// Value of mCycleMarker for ordered streams in muted cycles.
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const uint32_t IN_MUTED_CYCLE = 1;
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} // namespace
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void
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MediaStreamGraphImpl::UpdateStreamOrder()
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{
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#ifdef MOZ_WEBRTC
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bool shouldAEC = false;
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#endif
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bool audioTrackPresent = false;
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for (uint32_t i = 0; i < mStreams.Length(); ++i) {
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MediaStream* stream = mStreams[i];
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#ifdef MOZ_WEBRTC
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if (stream->AsSourceStream() &&
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stream->AsSourceStream()->NeedsMixing()) {
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shouldAEC = true;
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}
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#endif
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// If this is a AudioNodeStream, force a AudioCallbackDriver.
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if (stream->AsAudioNodeStream()) {
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audioTrackPresent = true;
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} else {
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for (StreamBuffer::TrackIter tracks(stream->GetStreamBuffer(), MediaSegment::AUDIO);
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!tracks.IsEnded(); tracks.Next()) {
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audioTrackPresent = true;
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}
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}
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}
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// Note that this looks for any audio streams, input or output, and switches to a
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// SystemClockDriver if there are none
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if (!audioTrackPresent && mRealtime &&
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CurrentDriver()->AsAudioCallbackDriver()) {
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MonitorAutoLock mon(mMonitor);
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if (CurrentDriver()->AsAudioCallbackDriver()->IsStarted()) {
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if (mLifecycleState == LIFECYCLE_RUNNING) {
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SystemClockDriver* driver = new SystemClockDriver(this);
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CurrentDriver()->SwitchAtNextIteration(driver);
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}
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}
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}
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bool switching = false;
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{
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MonitorAutoLock mon(mMonitor);
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switching = CurrentDriver()->Switching();
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}
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if (audioTrackPresent && mRealtime &&
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!CurrentDriver()->AsAudioCallbackDriver() &&
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!switching) {
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MonitorAutoLock mon(mMonitor);
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if (mLifecycleState == LIFECYCLE_RUNNING) {
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AudioCallbackDriver* driver = new AudioCallbackDriver(this);
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CurrentDriver()->SwitchAtNextIteration(driver);
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}
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}
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#ifdef MOZ_WEBRTC
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if (shouldAEC && !mFarendObserverRef && gFarendObserver) {
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mFarendObserverRef = gFarendObserver;
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mMixer.AddCallback(mFarendObserverRef);
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} else if (!shouldAEC && mFarendObserverRef){
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if (mMixer.FindCallback(mFarendObserverRef)) {
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mMixer.RemoveCallback(mFarendObserverRef);
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mFarendObserverRef = nullptr;
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}
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}
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#endif
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if (!mStreamOrderDirty) {
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return;
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}
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mStreamOrderDirty = false;
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// The algorithm for finding cycles is based on Tim Leslie's iterative
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// implementation [1][2] of Pearce's variant [3] of Tarjan's strongly
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// connected components (SCC) algorithm. There are variations (a) to
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// distinguish whether streams in SCCs of size 1 are in a cycle and (b) to
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// re-run the algorithm over SCCs with breaks at DelayNodes.
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//
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// [1] http://www.timl.id.au/?p=327
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// [2] https://github.com/scipy/scipy/blob/e2c502fca/scipy/sparse/csgraph/_traversal.pyx#L582
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// [3] http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.102.1707
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//
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// There are two stacks. One for the depth-first search (DFS),
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mozilla::LinkedList<MediaStream> dfsStack;
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// and another for streams popped from the DFS stack, but still being
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// considered as part of SCCs involving streams on the stack.
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mozilla::LinkedList<MediaStream> sccStack;
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// An index into mStreams for the next stream found with no unsatisfied
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// upstream dependencies.
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uint32_t orderedStreamCount = 0;
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for (uint32_t i = 0; i < mStreams.Length(); ++i) {
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MediaStream* s = mStreams[i];
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ProcessedMediaStream* ps = s->AsProcessedStream();
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if (ps) {
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// The dfsStack initially contains a list of all processed streams in
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// unchanged order.
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dfsStack.insertBack(s);
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ps->mCycleMarker = NOT_VISITED;
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} else {
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// SourceMediaStreams have no inputs and so can be ordered now.
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mStreams[orderedStreamCount] = s;
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++orderedStreamCount;
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}
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}
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// mNextStackMarker corresponds to "index" in Tarjan's algorithm. It is a
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// counter to label mCycleMarker on the next visited stream in the DFS
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// uniquely in the set of visited streams that are still being considered.
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//
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// In this implementation, the counter descends so that the values are
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// strictly greater than the values that mCycleMarker takes when the stream
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// has been ordered (0 or IN_MUTED_CYCLE).
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//
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// Each new stream labelled, as the DFS searches upstream, receives a value
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// less than those used for all other streams being considered.
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uint32_t nextStackMarker = NOT_VISITED - 1;
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// Reset list of DelayNodes in cycles stored at the tail of mStreams.
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mFirstCycleBreaker = mStreams.Length();
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// Rearrange dfsStack order as required to DFS upstream and pop streams
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// in processing order to place in mStreams.
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while (auto ps = static_cast<ProcessedMediaStream*>(dfsStack.getFirst())) {
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const auto& inputs = ps->mInputs;
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MOZ_ASSERT(ps->AsProcessedStream());
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if (ps->mCycleMarker == NOT_VISITED) {
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// Record the position on the visited stack, so that any searches
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// finding this stream again know how much of the stack is in the cycle.
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ps->mCycleMarker = nextStackMarker;
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--nextStackMarker;
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// Not-visited input streams should be processed first.
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// SourceMediaStreams have already been ordered.
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for (uint32_t i = inputs.Length(); i--; ) {
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if (inputs[i]->mSource->IsSuspended()) {
|
|
continue;
|
|
}
|
|
auto input = inputs[i]->mSource->AsProcessedStream();
|
|
if (input && input->mCycleMarker == NOT_VISITED) {
|
|
// It can be that this stream has an input which is from a suspended
|
|
// AudioContext.
|
|
if (input->isInList()) {
|
|
input->remove();
|
|
dfsStack.insertFront(input);
|
|
}
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// Returning from DFS. Pop from dfsStack.
|
|
ps->remove();
|
|
|
|
// cycleStackMarker keeps track of the highest marker value on any
|
|
// upstream stream, if any, found receiving input, directly or indirectly,
|
|
// from the visited stack (and so from |ps|, making a cycle). In a
|
|
// variation from Tarjan's SCC algorithm, this does not include |ps|
|
|
// unless it is part of the cycle.
|
|
uint32_t cycleStackMarker = 0;
|
|
for (uint32_t i = inputs.Length(); i--; ) {
|
|
if (inputs[i]->mSource->IsSuspended()) {
|
|
continue;
|
|
}
|
|
auto input = inputs[i]->mSource->AsProcessedStream();
|
|
if (input) {
|
|
cycleStackMarker = std::max(cycleStackMarker, input->mCycleMarker);
|
|
}
|
|
}
|
|
|
|
if (cycleStackMarker <= IN_MUTED_CYCLE) {
|
|
// All inputs have been ordered and their stack markers have been removed.
|
|
// This stream is not part of a cycle. It can be processed next.
|
|
ps->mCycleMarker = 0;
|
|
mStreams[orderedStreamCount] = ps;
|
|
++orderedStreamCount;
|
|
continue;
|
|
}
|
|
|
|
// A cycle has been found. Record this stream for ordering when all
|
|
// streams in this SCC have been popped from the DFS stack.
|
|
sccStack.insertFront(ps);
|
|
|
|
if (cycleStackMarker > ps->mCycleMarker) {
|
|
// Cycles have been found that involve streams that remain on the stack.
|
|
// Leave mCycleMarker indicating the most downstream (last) stream on
|
|
// the stack known to be part of this SCC. In this way, any searches on
|
|
// other paths that find |ps| will know (without having to traverse from
|
|
// this stream again) that they are part of this SCC (i.e. part of an
|
|
// intersecting cycle).
|
|
ps->mCycleMarker = cycleStackMarker;
|
|
continue;
|
|
}
|
|
|
|
// |ps| is the root of an SCC involving no other streams on dfsStack, the
|
|
// complete SCC has been recorded, and streams in this SCC are part of at
|
|
// least one cycle.
|
|
MOZ_ASSERT(cycleStackMarker == ps->mCycleMarker);
|
|
// If there are DelayNodes in this SCC, then they may break the cycles.
|
|
bool haveDelayNode = false;
|
|
auto next = sccStack.getFirst();
|
|
// Streams in this SCC are identified by mCycleMarker <= cycleStackMarker.
|
|
// (There may be other streams later in sccStack from other incompletely
|
|
// searched SCCs, involving streams still on dfsStack.)
|
|
//
|
|
// DelayNodes in cycles must behave differently from those not in cycles,
|
|
// so all DelayNodes in the SCC must be identified.
|
|
while (next && static_cast<ProcessedMediaStream*>(next)->
|
|
mCycleMarker <= cycleStackMarker) {
|
|
auto ns = next->AsAudioNodeStream();
|
|
// Get next before perhaps removing from list below.
|
|
next = next->getNext();
|
|
if (ns && ns->Engine()->AsDelayNodeEngine()) {
|
|
haveDelayNode = true;
|
|
// DelayNodes break cycles by producing their output in a
|
|
// preprocessing phase; they do not need to be ordered before their
|
|
// consumers. Order them at the tail of mStreams so that they can be
|
|
// handled specially. Do so now, so that DFS ignores them.
|
|
ns->remove();
|
|
ns->mCycleMarker = 0;
|
|
--mFirstCycleBreaker;
|
|
mStreams[mFirstCycleBreaker] = ns;
|
|
}
|
|
}
|
|
auto after_scc = next;
|
|
while ((next = sccStack.getFirst()) != after_scc) {
|
|
next->remove();
|
|
auto removed = static_cast<ProcessedMediaStream*>(next);
|
|
if (haveDelayNode) {
|
|
// Return streams to the DFS stack again (to order and detect cycles
|
|
// without delayNodes). Any of these streams that are still inputs
|
|
// for streams on the visited stack must be returned to the front of
|
|
// the stack to be ordered before their dependents. We know that none
|
|
// of these streams need input from streams on the visited stack, so
|
|
// they can all be searched and ordered before the current stack head
|
|
// is popped.
|
|
removed->mCycleMarker = NOT_VISITED;
|
|
dfsStack.insertFront(removed);
|
|
} else {
|
|
// Streams in cycles without any DelayNodes must be muted, and so do
|
|
// not need input and can be ordered now. They must be ordered before
|
|
// their consumers so that their muted output is available.
|
|
removed->mCycleMarker = IN_MUTED_CYCLE;
|
|
mStreams[orderedStreamCount] = removed;
|
|
++orderedStreamCount;
|
|
}
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(orderedStreamCount == mFirstCycleBreaker);
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::NotifyHasCurrentData(MediaStream* aStream)
|
|
{
|
|
if (!aStream->mNotifiedHasCurrentData && aStream->mHasCurrentData) {
|
|
for (uint32_t j = 0; j < aStream->mListeners.Length(); ++j) {
|
|
MediaStreamListener* l = aStream->mListeners[j];
|
|
l->NotifyHasCurrentData(this);
|
|
}
|
|
aStream->mNotifiedHasCurrentData = true;
|
|
}
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::CreateOrDestroyAudioStreams(MediaStream* aStream)
|
|
{
|
|
MOZ_ASSERT(mRealtime, "Should only attempt to create audio streams in real-time mode");
|
|
|
|
if (aStream->mAudioOutputs.IsEmpty()) {
|
|
aStream->mAudioOutputStreams.Clear();
|
|
return;
|
|
}
|
|
|
|
if (!aStream->GetStreamBuffer().GetAndResetTracksDirty() &&
|
|
!aStream->mAudioOutputStreams.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
STREAM_LOG(LogLevel::Debug, ("Updating AudioOutputStreams for MediaStream %p", aStream));
|
|
|
|
nsAutoTArray<bool,2> audioOutputStreamsFound;
|
|
for (uint32_t i = 0; i < aStream->mAudioOutputStreams.Length(); ++i) {
|
|
audioOutputStreamsFound.AppendElement(false);
|
|
}
|
|
|
|
for (StreamBuffer::TrackIter tracks(aStream->GetStreamBuffer(), MediaSegment::AUDIO);
|
|
!tracks.IsEnded(); tracks.Next()) {
|
|
uint32_t i;
|
|
for (i = 0; i < audioOutputStreamsFound.Length(); ++i) {
|
|
if (aStream->mAudioOutputStreams[i].mTrackID == tracks->GetID()) {
|
|
break;
|
|
}
|
|
}
|
|
if (i < audioOutputStreamsFound.Length()) {
|
|
audioOutputStreamsFound[i] = true;
|
|
} else {
|
|
MediaStream::AudioOutputStream* audioOutputStream =
|
|
aStream->mAudioOutputStreams.AppendElement();
|
|
audioOutputStream->mAudioPlaybackStartTime = mProcessedTime;
|
|
audioOutputStream->mBlockedAudioTime = 0;
|
|
audioOutputStream->mLastTickWritten = 0;
|
|
audioOutputStream->mTrackID = tracks->GetID();
|
|
|
|
bool switching = false;
|
|
|
|
{
|
|
MonitorAutoLock lock(mMonitor);
|
|
switching = CurrentDriver()->Switching();
|
|
}
|
|
|
|
if (!CurrentDriver()->AsAudioCallbackDriver() &&
|
|
!switching) {
|
|
MonitorAutoLock mon(mMonitor);
|
|
if (mLifecycleState == LIFECYCLE_RUNNING) {
|
|
AudioCallbackDriver* driver = new AudioCallbackDriver(this);
|
|
CurrentDriver()->SwitchAtNextIteration(driver);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
for (int32_t i = audioOutputStreamsFound.Length() - 1; i >= 0; --i) {
|
|
if (!audioOutputStreamsFound[i]) {
|
|
aStream->mAudioOutputStreams.RemoveElementAt(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
StreamTime
|
|
MediaStreamGraphImpl::PlayAudio(MediaStream* aStream)
|
|
{
|
|
MOZ_ASSERT(mRealtime, "Should only attempt to play audio in realtime mode");
|
|
|
|
float volume = 0.0f;
|
|
for (uint32_t i = 0; i < aStream->mAudioOutputs.Length(); ++i) {
|
|
volume += aStream->mAudioOutputs[i].mVolume;
|
|
}
|
|
|
|
StreamTime ticksWritten = 0;
|
|
|
|
for (uint32_t i = 0; i < aStream->mAudioOutputStreams.Length(); ++i) {
|
|
ticksWritten = 0;
|
|
|
|
MediaStream::AudioOutputStream& audioOutput = aStream->mAudioOutputStreams[i];
|
|
StreamBuffer::Track* track = aStream->mBuffer.FindTrack(audioOutput.mTrackID);
|
|
AudioSegment* audio = track->Get<AudioSegment>();
|
|
AudioSegment output;
|
|
|
|
StreamTime offset = aStream->GraphTimeToStreamTime(mProcessedTime);
|
|
|
|
// We don't update aStream->mBufferStartTime here to account for time spent
|
|
// blocked. Instead, we'll update it in UpdateCurrentTimeForStreams after
|
|
// the blocked period has completed. But we do need to make sure we play
|
|
// from the right offsets in the stream buffer, even if we've already
|
|
// written silence for some amount of blocked time after the current time.
|
|
GraphTime t = mProcessedTime;
|
|
while (t < mStateComputedTime) {
|
|
bool blocked = t >= aStream->mStartBlocking;
|
|
GraphTime end = blocked ? mStateComputedTime : aStream->mStartBlocking;
|
|
NS_ASSERTION(end <= mStateComputedTime, "mStartBlocking is wrong!");
|
|
|
|
// Check how many ticks of sound we can provide if we are blocked some
|
|
// time in the middle of this cycle.
|
|
StreamTime toWrite = end - t;
|
|
|
|
if (blocked) {
|
|
output.InsertNullDataAtStart(toWrite);
|
|
ticksWritten += toWrite;
|
|
STREAM_LOG(LogLevel::Verbose, ("MediaStream %p writing %ld blocking-silence samples for %f to %f (%ld to %ld)\n",
|
|
aStream, toWrite, MediaTimeToSeconds(t), MediaTimeToSeconds(end),
|
|
offset, offset + toWrite));
|
|
} else {
|
|
StreamTime endTicksNeeded = offset + toWrite;
|
|
StreamTime endTicksAvailable = audio->GetDuration();
|
|
|
|
if (endTicksNeeded <= endTicksAvailable) {
|
|
STREAM_LOG(LogLevel::Verbose,
|
|
("MediaStream %p writing %ld samples for %f to %f "
|
|
"(samples %ld to %ld)\n",
|
|
aStream, toWrite, MediaTimeToSeconds(t),
|
|
MediaTimeToSeconds(end), offset, endTicksNeeded));
|
|
output.AppendSlice(*audio, offset, endTicksNeeded);
|
|
ticksWritten += toWrite;
|
|
offset = endTicksNeeded;
|
|
} else {
|
|
// MOZ_ASSERT(track->IsEnded(), "Not enough data, and track not ended.");
|
|
// If we are at the end of the track, maybe write the remaining
|
|
// samples, and pad with/output silence.
|
|
if (endTicksNeeded > endTicksAvailable &&
|
|
offset < endTicksAvailable) {
|
|
output.AppendSlice(*audio, offset, endTicksAvailable);
|
|
STREAM_LOG(LogLevel::Verbose,
|
|
("MediaStream %p writing %ld samples for %f to %f "
|
|
"(samples %ld to %ld)\n",
|
|
aStream, toWrite, MediaTimeToSeconds(t),
|
|
MediaTimeToSeconds(end), offset, endTicksNeeded));
|
|
uint32_t available = endTicksAvailable - offset;
|
|
ticksWritten += available;
|
|
toWrite -= available;
|
|
offset = endTicksAvailable;
|
|
}
|
|
output.AppendNullData(toWrite);
|
|
STREAM_LOG(LogLevel::Verbose,
|
|
("MediaStream %p writing %ld padding slsamples for %f to "
|
|
"%f (samples %ld to %ld)\n",
|
|
aStream, toWrite, MediaTimeToSeconds(t),
|
|
MediaTimeToSeconds(end), offset, endTicksNeeded));
|
|
ticksWritten += toWrite;
|
|
}
|
|
output.ApplyVolume(volume);
|
|
}
|
|
t = end;
|
|
}
|
|
audioOutput.mLastTickWritten = offset;
|
|
|
|
// Need unique id for stream & track - and we want it to match the inserter
|
|
output.WriteTo(LATENCY_STREAM_ID(aStream, track->GetID()),
|
|
mMixer, AudioChannelCount(),
|
|
mSampleRate);
|
|
}
|
|
return ticksWritten;
|
|
}
|
|
|
|
static void
|
|
SetImageToBlackPixel(PlanarYCbCrImage* aImage)
|
|
{
|
|
uint8_t blackPixel[] = { 0x10, 0x80, 0x80 };
|
|
|
|
PlanarYCbCrData data;
|
|
data.mYChannel = blackPixel;
|
|
data.mCbChannel = blackPixel + 1;
|
|
data.mCrChannel = blackPixel + 2;
|
|
data.mYStride = data.mCbCrStride = 1;
|
|
data.mPicSize = data.mYSize = data.mCbCrSize = IntSize(1, 1);
|
|
aImage->SetData(data);
|
|
}
|
|
|
|
class VideoFrameContainerInvalidateRunnable : public nsRunnable {
|
|
public:
|
|
explicit VideoFrameContainerInvalidateRunnable(VideoFrameContainer* aVideoFrameContainer)
|
|
: mVideoFrameContainer(aVideoFrameContainer)
|
|
{}
|
|
NS_IMETHOD Run()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
mVideoFrameContainer->Invalidate();
|
|
|
|
return NS_OK;
|
|
}
|
|
private:
|
|
RefPtr<VideoFrameContainer> mVideoFrameContainer;
|
|
};
|
|
|
|
void
|
|
MediaStreamGraphImpl::PlayVideo(MediaStream* aStream)
|
|
{
|
|
MOZ_ASSERT(mRealtime, "Should only attempt to play video in realtime mode");
|
|
|
|
if (aStream->mVideoOutputs.IsEmpty())
|
|
return;
|
|
|
|
TimeStamp currentTimeStamp = CurrentDriver()->GetCurrentTimeStamp();
|
|
|
|
// Collect any new frames produced in this iteration.
|
|
nsAutoTArray<ImageContainer::NonOwningImage,4> newImages;
|
|
RefPtr<Image> blackImage;
|
|
|
|
MOZ_ASSERT(mProcessedTime >= aStream->mBufferStartTime, "frame position before buffer?");
|
|
// We only look at the non-blocking interval
|
|
StreamTime frameBufferTime = aStream->GraphTimeToStreamTime(mProcessedTime);
|
|
StreamTime bufferEndTime = aStream->GraphTimeToStreamTime(aStream->mStartBlocking);
|
|
StreamTime start;
|
|
const VideoChunk* chunk;
|
|
for ( ;
|
|
frameBufferTime < bufferEndTime;
|
|
frameBufferTime = start + chunk->GetDuration()) {
|
|
// Pick the last track that has a video chunk for the time, and
|
|
// schedule its frame.
|
|
chunk = nullptr;
|
|
for (StreamBuffer::TrackIter tracks(aStream->GetStreamBuffer(),
|
|
MediaSegment::VIDEO);
|
|
!tracks.IsEnded();
|
|
tracks.Next()) {
|
|
VideoSegment* segment = tracks->Get<VideoSegment>();
|
|
StreamTime thisStart;
|
|
const VideoChunk* thisChunk =
|
|
segment->FindChunkContaining(frameBufferTime, &thisStart);
|
|
if (thisChunk && thisChunk->mFrame.GetImage()) {
|
|
start = thisStart;
|
|
chunk = thisChunk;
|
|
}
|
|
}
|
|
if (!chunk)
|
|
break;
|
|
|
|
const VideoFrame* frame = &chunk->mFrame;
|
|
if (*frame == aStream->mLastPlayedVideoFrame) {
|
|
continue;
|
|
}
|
|
|
|
Image* image = frame->GetImage();
|
|
STREAM_LOG(LogLevel::Verbose,
|
|
("MediaStream %p writing video frame %p (%dx%d)",
|
|
aStream, image, frame->GetIntrinsicSize().width,
|
|
frame->GetIntrinsicSize().height));
|
|
// Schedule this frame after the previous frame finishes, instead of at
|
|
// its start time. These times only differ in the case of multiple
|
|
// tracks.
|
|
// frameBufferTime is in the non-blocking interval.
|
|
GraphTime frameTime = aStream->StreamTimeToGraphTime(frameBufferTime);
|
|
TimeStamp targetTime = currentTimeStamp +
|
|
TimeDuration::FromSeconds(MediaTimeToSeconds(frameTime - IterationEnd()));
|
|
|
|
if (frame->GetForceBlack()) {
|
|
if (!blackImage) {
|
|
blackImage = aStream->mVideoOutputs[0]->GetImageContainer()->CreatePlanarYCbCrImage();
|
|
if (blackImage) {
|
|
// Sets the image to a single black pixel, which will be scaled to
|
|
// fill the rendered size.
|
|
SetImageToBlackPixel(blackImage->AsPlanarYCbCrImage());
|
|
}
|
|
}
|
|
if (blackImage) {
|
|
image = blackImage;
|
|
}
|
|
}
|
|
newImages.AppendElement(ImageContainer::NonOwningImage(image, targetTime));
|
|
|
|
aStream->mLastPlayedVideoFrame = *frame;
|
|
}
|
|
|
|
if (!aStream->mLastPlayedVideoFrame.GetImage())
|
|
return;
|
|
|
|
nsAutoTArray<ImageContainer::NonOwningImage,4> images;
|
|
bool haveMultipleImages = false;
|
|
|
|
for (uint32_t i = 0; i < aStream->mVideoOutputs.Length(); ++i) {
|
|
VideoFrameContainer* output = aStream->mVideoOutputs[i];
|
|
|
|
// Find previous frames that may still be valid.
|
|
nsAutoTArray<ImageContainer::OwningImage,4> previousImages;
|
|
output->GetImageContainer()->GetCurrentImages(&previousImages);
|
|
uint32_t j = previousImages.Length();
|
|
if (j) {
|
|
// Re-use the most recent frame before currentTimeStamp and subsequent,
|
|
// always keeping at least one frame.
|
|
do {
|
|
--j;
|
|
} while (j > 0 && previousImages[j].mTimeStamp > currentTimeStamp);
|
|
}
|
|
if (previousImages.Length() - j + newImages.Length() > 1) {
|
|
haveMultipleImages = true;
|
|
}
|
|
|
|
// Don't update if there are no changes.
|
|
if (j == 0 && newImages.IsEmpty())
|
|
continue;
|
|
|
|
for ( ; j < previousImages.Length(); ++j) {
|
|
const auto& image = previousImages[j];
|
|
// Cope with potential clock skew with AudioCallbackDriver.
|
|
if (newImages.Length() && image.mTimeStamp > newImages[0].mTimeStamp) {
|
|
STREAM_LOG(LogLevel::Warning,
|
|
("Dropping %u video frames due to clock skew",
|
|
unsigned(previousImages.Length() - j)));
|
|
break;
|
|
}
|
|
|
|
images.AppendElement(ImageContainer::
|
|
NonOwningImage(image.mImage,
|
|
image.mTimeStamp, image.mFrameID));
|
|
}
|
|
|
|
// Add the frames from this iteration.
|
|
for (auto& image : newImages) {
|
|
image.mFrameID = output->NewFrameID();
|
|
images.AppendElement(image);
|
|
}
|
|
output->SetCurrentFrames(aStream->mLastPlayedVideoFrame.GetIntrinsicSize(),
|
|
images);
|
|
|
|
nsCOMPtr<nsIRunnable> event =
|
|
new VideoFrameContainerInvalidateRunnable(output);
|
|
DispatchToMainThreadAfterStreamStateUpdate(event.forget());
|
|
|
|
images.ClearAndRetainStorage();
|
|
}
|
|
|
|
// If the stream has finished and the timestamps of all frames have expired
|
|
// then no more updates are required.
|
|
if (aStream->mFinished && !haveMultipleImages) {
|
|
aStream->mLastPlayedVideoFrame.SetNull();
|
|
}
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::OpenAudioInputImpl(CubebUtils::AudioDeviceID aID,
|
|
AudioDataListener *aListener)
|
|
{
|
|
// Bug 1238038 Need support for multiple mics at once
|
|
MOZ_ASSERT(!mInputWanted);
|
|
if (mInputWanted) {
|
|
// Need to support separate input-only AudioCallback drivers; they'll
|
|
// call us back on "other" threads. We will need to echo-cancel them, though.
|
|
return;
|
|
}
|
|
mInputWanted = true;
|
|
// aID is a cubeb_devid, and we assume that opaque ptr is valid until
|
|
// we close cubeb.
|
|
mInputDeviceID = aID;
|
|
mAudioInputs.AppendElement(aListener); // always monitor speaker data
|
|
|
|
// Switch Drivers since we're adding input (to input-only or full-duplex)
|
|
MonitorAutoLock mon(mMonitor);
|
|
if (mLifecycleState == LIFECYCLE_RUNNING) {
|
|
AudioCallbackDriver* driver = new AudioCallbackDriver(this);
|
|
CurrentDriver()->SwitchAtNextIteration(driver);
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
MediaStreamGraphImpl::OpenAudioInput(CubebUtils::AudioDeviceID aID,
|
|
AudioDataListener *aListener)
|
|
{
|
|
// So, so, so annoying. Can't AppendMessage except on Mainthread
|
|
if (!NS_IsMainThread()) {
|
|
NS_DispatchToMainThread(WrapRunnable(this,
|
|
&MediaStreamGraphImpl::OpenAudioInput,
|
|
aID, aListener));
|
|
return NS_OK;
|
|
}
|
|
class Message : public ControlMessage {
|
|
public:
|
|
Message(MediaStreamGraphImpl *aGraph, CubebUtils::AudioDeviceID aID,
|
|
AudioDataListener *aListener) :
|
|
ControlMessage(nullptr), mGraph(aGraph), mID(aID), mListener(aListener) {}
|
|
virtual void Run()
|
|
{
|
|
mGraph->OpenAudioInputImpl(mID, mListener);
|
|
}
|
|
MediaStreamGraphImpl *mGraph;
|
|
// aID is a cubeb_devid, and we assume that opaque ptr is valid until
|
|
// we close cubeb.
|
|
CubebUtils::AudioDeviceID mID;
|
|
RefPtr<AudioDataListener> mListener;
|
|
};
|
|
this->AppendMessage(new Message(this, aID, aListener));
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::CloseAudioInputImpl(AudioDataListener *aListener)
|
|
{
|
|
mInputDeviceID = nullptr;
|
|
mInputWanted = false;
|
|
CurrentDriver()->RemoveInputListener(aListener);
|
|
mAudioInputs.RemoveElement(aListener);
|
|
|
|
// Switch Drivers since we're adding or removing an input (to nothing/system or output only)
|
|
bool audioTrackPresent = false;
|
|
for (uint32_t i = 0; i < mStreams.Length(); ++i) {
|
|
MediaStream* stream = mStreams[i];
|
|
// If this is a AudioNodeStream, force a AudioCallbackDriver.
|
|
if (stream->AsAudioNodeStream()) {
|
|
audioTrackPresent = true;
|
|
} else if (CurrentDriver()->AsAudioCallbackDriver()) {
|
|
// only if there's a real switch!
|
|
for (StreamBuffer::TrackIter tracks(stream->GetStreamBuffer(), MediaSegment::AUDIO);
|
|
!tracks.IsEnded(); tracks.Next()) {
|
|
audioTrackPresent = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
MonitorAutoLock mon(mMonitor);
|
|
if (mLifecycleState == LIFECYCLE_RUNNING) {
|
|
GraphDriver* driver;
|
|
if (audioTrackPresent) {
|
|
// We still have audio output
|
|
STREAM_LOG(LogLevel::Debug, ("CloseInput: output present (AudioCallback)"));
|
|
|
|
driver = new AudioCallbackDriver(this);
|
|
CurrentDriver()->SwitchAtNextIteration(driver);
|
|
} else if (CurrentDriver()->AsAudioCallbackDriver()) {
|
|
STREAM_LOG(LogLevel::Debug, ("CloseInput: no output present (SystemClockCallback)"));
|
|
|
|
driver = new SystemClockDriver(this);
|
|
CurrentDriver()->SwitchAtNextIteration(driver);
|
|
} // else SystemClockDriver->SystemClockDriver, no switch
|
|
}
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::CloseAudioInput(AudioDataListener *aListener)
|
|
{
|
|
// So, so, so annoying. Can't AppendMessage except on Mainthread
|
|
if (!NS_IsMainThread()) {
|
|
NS_DispatchToMainThread(WrapRunnable(this,
|
|
&MediaStreamGraphImpl::CloseAudioInput,
|
|
aListener));
|
|
return;
|
|
}
|
|
class Message : public ControlMessage {
|
|
public:
|
|
Message(MediaStreamGraphImpl *aGraph, AudioDataListener *aListener) :
|
|
ControlMessage(nullptr), mGraph(aGraph), mListener(aListener) {}
|
|
virtual void Run()
|
|
{
|
|
mGraph->CloseAudioInputImpl(mListener);
|
|
}
|
|
MediaStreamGraphImpl *mGraph;
|
|
RefPtr<AudioDataListener> mListener;
|
|
};
|
|
this->AppendMessage(new Message(this, aListener));
|
|
}
|
|
|
|
|
|
// All AudioInput listeners get the same speaker data (at least for now).
|
|
void
|
|
MediaStreamGraph::NotifyOutputData(AudioDataValue* aBuffer, size_t aFrames,
|
|
uint32_t aChannels)
|
|
{
|
|
for (auto& listener : mAudioInputs) {
|
|
listener->NotifyOutputData(this, aBuffer, aFrames, aChannels);
|
|
}
|
|
}
|
|
|
|
bool
|
|
MediaStreamGraphImpl::ShouldUpdateMainThread()
|
|
{
|
|
if (mRealtime) {
|
|
return true;
|
|
}
|
|
|
|
TimeStamp now = TimeStamp::Now();
|
|
if ((now - mLastMainThreadUpdate).ToMilliseconds() > CurrentDriver()->IterationDuration()) {
|
|
mLastMainThreadUpdate = now;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::PrepareUpdatesToMainThreadState(bool aFinalUpdate)
|
|
{
|
|
mMonitor.AssertCurrentThreadOwns();
|
|
|
|
// We don't want to frequently update the main thread about timing update
|
|
// when we are not running in realtime.
|
|
if (aFinalUpdate || ShouldUpdateMainThread()) {
|
|
mStreamUpdates.SetCapacity(mStreamUpdates.Length() + mStreams.Length() +
|
|
mSuspendedStreams.Length());
|
|
for (MediaStream* stream : AllStreams()) {
|
|
if (!stream->MainThreadNeedsUpdates()) {
|
|
continue;
|
|
}
|
|
StreamUpdate* update = mStreamUpdates.AppendElement();
|
|
update->mStream = stream;
|
|
// No blocking to worry about here, since we've passed
|
|
// UpdateCurrentTimeForStreams.
|
|
update->mNextMainThreadCurrentTime =
|
|
stream->GraphTimeToStreamTime(mProcessedTime);
|
|
update->mNextMainThreadFinished = stream->mNotifiedFinished;
|
|
}
|
|
if (!mPendingUpdateRunnables.IsEmpty()) {
|
|
mUpdateRunnables.AppendElements(Move(mPendingUpdateRunnables));
|
|
}
|
|
}
|
|
|
|
// Don't send the message to the main thread if it's not going to have
|
|
// any work to do.
|
|
if (aFinalUpdate ||
|
|
!mUpdateRunnables.IsEmpty() ||
|
|
!mStreamUpdates.IsEmpty()) {
|
|
EnsureStableStateEventPosted();
|
|
}
|
|
}
|
|
|
|
GraphTime
|
|
MediaStreamGraphImpl::RoundUpToNextAudioBlock(GraphTime aTime)
|
|
{
|
|
StreamTime ticks = aTime;
|
|
uint64_t block = ticks >> WEBAUDIO_BLOCK_SIZE_BITS;
|
|
uint64_t nextBlock = block + 1;
|
|
StreamTime nextTicks = nextBlock << WEBAUDIO_BLOCK_SIZE_BITS;
|
|
return nextTicks;
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::ProduceDataForStreamsBlockByBlock(uint32_t aStreamIndex,
|
|
TrackRate aSampleRate)
|
|
{
|
|
MOZ_ASSERT(aStreamIndex <= mFirstCycleBreaker,
|
|
"Cycle breaker is not AudioNodeStream?");
|
|
GraphTime t = mProcessedTime;
|
|
while (t < mStateComputedTime) {
|
|
GraphTime next = RoundUpToNextAudioBlock(t);
|
|
for (uint32_t i = mFirstCycleBreaker; i < mStreams.Length(); ++i) {
|
|
auto ns = static_cast<AudioNodeStream*>(mStreams[i]);
|
|
MOZ_ASSERT(ns->AsAudioNodeStream());
|
|
ns->ProduceOutputBeforeInput(t);
|
|
}
|
|
for (uint32_t i = aStreamIndex; i < mStreams.Length(); ++i) {
|
|
ProcessedMediaStream* ps = mStreams[i]->AsProcessedStream();
|
|
if (ps) {
|
|
ps->ProcessInput(t, next,
|
|
(next == mStateComputedTime) ? ProcessedMediaStream::ALLOW_FINISH : 0);
|
|
}
|
|
}
|
|
t = next;
|
|
}
|
|
NS_ASSERTION(t == mStateComputedTime,
|
|
"Something went wrong with rounding to block boundaries");
|
|
}
|
|
|
|
bool
|
|
MediaStreamGraphImpl::AllFinishedStreamsNotified()
|
|
{
|
|
for (MediaStream* stream : AllStreams()) {
|
|
if (stream->mFinished && !stream->mNotifiedFinished) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::RunMessageAfterProcessing(nsAutoPtr<ControlMessage> aMessage)
|
|
{
|
|
MOZ_ASSERT(CurrentDriver()->OnThread());
|
|
|
|
if (mFrontMessageQueue.IsEmpty()) {
|
|
mFrontMessageQueue.AppendElement();
|
|
}
|
|
|
|
// Only one block is used for messages from the graph thread.
|
|
MOZ_ASSERT(mFrontMessageQueue.Length() == 1);
|
|
mFrontMessageQueue[0].mMessages.AppendElement(Move(aMessage));
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::RunMessagesInQueue()
|
|
{
|
|
// Calculate independent action times for each batch of messages (each
|
|
// batch corresponding to an event loop task). This isolates the performance
|
|
// of different scripts to some extent.
|
|
for (uint32_t i = 0; i < mFrontMessageQueue.Length(); ++i) {
|
|
nsTArray<nsAutoPtr<ControlMessage> >& messages = mFrontMessageQueue[i].mMessages;
|
|
|
|
for (uint32_t j = 0; j < messages.Length(); ++j) {
|
|
messages[j]->Run();
|
|
}
|
|
}
|
|
mFrontMessageQueue.Clear();
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::UpdateGraph(GraphTime aEndBlockingDecisions)
|
|
{
|
|
MOZ_ASSERT(aEndBlockingDecisions >= mProcessedTime);
|
|
// The next state computed time can be the same as the previous: it
|
|
// means the driver would be have been blocking indefinitly, but the graph has
|
|
// been woken up right after having been to sleep.
|
|
MOZ_ASSERT(aEndBlockingDecisions >= mStateComputedTime);
|
|
|
|
UpdateStreamOrder();
|
|
|
|
bool ensureNextIteration = false;
|
|
|
|
// Grab pending stream input and compute blocking time
|
|
for (MediaStream* stream : mStreams) {
|
|
if (SourceMediaStream* is = stream->AsSourceStream()) {
|
|
ExtractPendingInput(is, aEndBlockingDecisions, &ensureNextIteration);
|
|
}
|
|
|
|
if (stream->mFinished) {
|
|
// The stream's not suspended, and since it's finished, underruns won't
|
|
// stop it playing out. So there's no blocking other than what we impose
|
|
// here.
|
|
GraphTime endTime = stream->GetStreamBuffer().GetAllTracksEnd() +
|
|
stream->mBufferStartTime;
|
|
if (endTime <= mStateComputedTime) {
|
|
STREAM_LOG(LogLevel::Verbose, ("MediaStream %p is blocked due to being finished", stream));
|
|
stream->mStartBlocking = mStateComputedTime;
|
|
} else {
|
|
STREAM_LOG(LogLevel::Verbose, ("MediaStream %p is finished, but not blocked yet (end at %f, with blocking at %f)",
|
|
stream, MediaTimeToSeconds(stream->GetBufferEnd()),
|
|
MediaTimeToSeconds(endTime)));
|
|
// Data can't be added to a finished stream, so underruns are irrelevant.
|
|
stream->mStartBlocking = std::min(endTime, aEndBlockingDecisions);
|
|
}
|
|
} else {
|
|
stream->mStartBlocking = WillUnderrun(stream, aEndBlockingDecisions);
|
|
}
|
|
}
|
|
|
|
for (MediaStream* stream : mSuspendedStreams) {
|
|
stream->mStartBlocking = mStateComputedTime;
|
|
}
|
|
|
|
// The loop is woken up so soon that IterationEnd() barely advances and we
|
|
// end up having aEndBlockingDecision == mStateComputedTime.
|
|
// Since stream blocking is computed in the interval of
|
|
// [mStateComputedTime, aEndBlockingDecision), it won't be computed at all.
|
|
// We should ensure next iteration so that pending blocking changes will be
|
|
// computed in next loop.
|
|
if (ensureNextIteration ||
|
|
aEndBlockingDecisions == mStateComputedTime) {
|
|
EnsureNextIteration();
|
|
}
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::Process()
|
|
{
|
|
// Play stream contents.
|
|
bool allBlockedForever = true;
|
|
// True when we've done ProcessInput for all processed streams.
|
|
bool doneAllProducing = false;
|
|
// This is the number of frame that are written to the AudioStreams, for
|
|
// this cycle.
|
|
StreamTime ticksPlayed = 0;
|
|
|
|
mMixer.StartMixing();
|
|
|
|
// Figure out what each stream wants to do
|
|
for (uint32_t i = 0; i < mStreams.Length(); ++i) {
|
|
MediaStream* stream = mStreams[i];
|
|
if (!doneAllProducing) {
|
|
ProcessedMediaStream* ps = stream->AsProcessedStream();
|
|
if (ps) {
|
|
AudioNodeStream* n = stream->AsAudioNodeStream();
|
|
if (n) {
|
|
#ifdef DEBUG
|
|
// Verify that the sampling rate for all of the following streams is the same
|
|
for (uint32_t j = i + 1; j < mStreams.Length(); ++j) {
|
|
AudioNodeStream* nextStream = mStreams[j]->AsAudioNodeStream();
|
|
if (nextStream) {
|
|
MOZ_ASSERT(n->SampleRate() == nextStream->SampleRate(),
|
|
"All AudioNodeStreams in the graph must have the same sampling rate");
|
|
}
|
|
}
|
|
#endif
|
|
// Since an AudioNodeStream is present, go ahead and
|
|
// produce audio block by block for all the rest of the streams.
|
|
ProduceDataForStreamsBlockByBlock(i, n->SampleRate());
|
|
doneAllProducing = true;
|
|
} else {
|
|
ps->ProcessInput(mProcessedTime, mStateComputedTime,
|
|
ProcessedMediaStream::ALLOW_FINISH);
|
|
NS_WARN_IF_FALSE(stream->mBuffer.GetEnd() >=
|
|
GraphTimeToStreamTimeWithBlocking(stream, mStateComputedTime),
|
|
"Stream did not produce enough data");
|
|
}
|
|
}
|
|
}
|
|
NotifyHasCurrentData(stream);
|
|
// Only playback audio and video in real-time mode
|
|
if (mRealtime) {
|
|
CreateOrDestroyAudioStreams(stream);
|
|
if (CurrentDriver()->AsAudioCallbackDriver()) {
|
|
StreamTime ticksPlayedForThisStream = PlayAudio(stream);
|
|
if (!ticksPlayed) {
|
|
ticksPlayed = ticksPlayedForThisStream;
|
|
} else {
|
|
MOZ_ASSERT(!ticksPlayedForThisStream || ticksPlayedForThisStream == ticksPlayed,
|
|
"Each stream should have the same number of frame.");
|
|
}
|
|
}
|
|
PlayVideo(stream);
|
|
}
|
|
if (stream->mStartBlocking > mProcessedTime) {
|
|
allBlockedForever = false;
|
|
}
|
|
}
|
|
|
|
if (CurrentDriver()->AsAudioCallbackDriver() && ticksPlayed) {
|
|
mMixer.FinishMixing();
|
|
}
|
|
|
|
if (!allBlockedForever) {
|
|
EnsureNextIteration();
|
|
}
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::MaybeProduceMemoryReport()
|
|
{
|
|
MonitorAutoLock lock(mMemoryReportMonitor);
|
|
if (mNeedsMemoryReport) {
|
|
mNeedsMemoryReport = false;
|
|
|
|
for (MediaStream* s : AllStreams()) {
|
|
AudioNodeStream* stream = s->AsAudioNodeStream();
|
|
if (stream) {
|
|
AudioNodeSizes usage;
|
|
stream->SizeOfAudioNodesIncludingThis(MallocSizeOf, usage);
|
|
mAudioStreamSizes.AppendElement(usage);
|
|
}
|
|
}
|
|
|
|
lock.Notify();
|
|
}
|
|
}
|
|
|
|
bool
|
|
MediaStreamGraphImpl::UpdateMainThreadState()
|
|
{
|
|
MonitorAutoLock lock(mMonitor);
|
|
bool finalUpdate = mForceShutDown ||
|
|
(mProcessedTime >= mEndTime && AllFinishedStreamsNotified()) ||
|
|
(IsEmpty() && mBackMessageQueue.IsEmpty());
|
|
PrepareUpdatesToMainThreadState(finalUpdate);
|
|
if (finalUpdate) {
|
|
// Enter shutdown mode. The stable-state handler will detect this
|
|
// and complete shutdown. Destroy any streams immediately.
|
|
STREAM_LOG(LogLevel::Debug, ("MediaStreamGraph %p waiting for main thread cleanup", this));
|
|
// We'll shut down this graph object if it does not get restarted.
|
|
mLifecycleState = LIFECYCLE_WAITING_FOR_MAIN_THREAD_CLEANUP;
|
|
// No need to Destroy streams here. The main-thread owner of each
|
|
// stream is responsible for calling Destroy on them.
|
|
return false;
|
|
}
|
|
|
|
CurrentDriver()->WaitForNextIteration();
|
|
|
|
SwapMessageQueues();
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
MediaStreamGraphImpl::OneIteration(GraphTime aStateEnd)
|
|
{
|
|
// Process graph message from the main thread for this iteration.
|
|
RunMessagesInQueue();
|
|
|
|
MaybeProduceMemoryReport();
|
|
|
|
GraphTime stateEnd = std::min(aStateEnd, mEndTime);
|
|
UpdateGraph(stateEnd);
|
|
|
|
mStateComputedTime = stateEnd;
|
|
|
|
Process();
|
|
|
|
GraphTime oldProcessedTime = mProcessedTime;
|
|
mProcessedTime = stateEnd;
|
|
|
|
UpdateCurrentTimeForStreams(oldProcessedTime);
|
|
|
|
// Process graph messages queued from RunMessageAfterProcessing() on this
|
|
// thread during the iteration.
|
|
RunMessagesInQueue();
|
|
|
|
return UpdateMainThreadState();
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::ApplyStreamUpdate(StreamUpdate* aUpdate)
|
|
{
|
|
mMonitor.AssertCurrentThreadOwns();
|
|
|
|
MediaStream* stream = aUpdate->mStream;
|
|
if (!stream)
|
|
return;
|
|
stream->mMainThreadCurrentTime = aUpdate->mNextMainThreadCurrentTime;
|
|
stream->mMainThreadFinished = aUpdate->mNextMainThreadFinished;
|
|
|
|
if (stream->ShouldNotifyStreamFinished()) {
|
|
if (stream->mWrapper) {
|
|
stream->mWrapper->NotifyStreamFinished();
|
|
}
|
|
|
|
stream->NotifyMainThreadListeners();
|
|
}
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::ForceShutDown(ShutdownTicket* aShutdownTicket)
|
|
{
|
|
NS_ASSERTION(NS_IsMainThread(), "Must be called on main thread");
|
|
STREAM_LOG(LogLevel::Debug, ("MediaStreamGraph %p ForceShutdown", this));
|
|
{
|
|
MonitorAutoLock lock(mMonitor);
|
|
mForceShutDown = true;
|
|
mForceShutdownTicket = aShutdownTicket;
|
|
EnsureNextIterationLocked();
|
|
}
|
|
}
|
|
|
|
/* static */ StaticRefPtr<nsIAsyncShutdownBlocker> gMediaStreamGraphShutdownBlocker;
|
|
|
|
namespace {
|
|
|
|
class MediaStreamGraphShutDownRunnable : public nsRunnable {
|
|
public:
|
|
explicit MediaStreamGraphShutDownRunnable(MediaStreamGraphImpl* aGraph)
|
|
: mGraph(aGraph)
|
|
{}
|
|
NS_IMETHOD Run()
|
|
{
|
|
NS_ASSERTION(mGraph->mDetectedNotRunning,
|
|
"We should know the graph thread control loop isn't running!");
|
|
|
|
LIFECYCLE_LOG("Shutting down graph %p", mGraph.get());
|
|
|
|
// We've asserted the graph isn't running. Use mDriver instead of CurrentDriver
|
|
// to avoid thread-safety checks
|
|
#if 0 // AudioCallbackDrivers are released asynchronously anyways
|
|
// XXX a better test would be have setting mDetectedNotRunning make sure
|
|
// any current callback has finished and block future ones -- or just
|
|
// handle it all in Shutdown()!
|
|
if (mGraph->mDriver->AsAudioCallbackDriver()) {
|
|
MOZ_ASSERT(!mGraph->mDriver->AsAudioCallbackDriver()->InCallback());
|
|
}
|
|
#endif
|
|
|
|
mGraph->mDriver->Shutdown(); // This will wait until it's shutdown since
|
|
// we'll start tearing down the graph after this
|
|
|
|
// We may be one of several graphs. Drop ticket to eventually unblock shutdown.
|
|
mGraph->mForceShutdownTicket = nullptr;
|
|
|
|
// We can't block past the final LIFECYCLE_WAITING_FOR_STREAM_DESTRUCTION
|
|
// stage, since completion of that stage requires all streams to be freed,
|
|
// which requires shutdown to proceed.
|
|
|
|
// mGraph's thread is not running so it's OK to do whatever here
|
|
if (mGraph->IsEmpty()) {
|
|
// mGraph is no longer needed, so delete it.
|
|
mGraph->Destroy();
|
|
} else {
|
|
// The graph is not empty. We must be in a forced shutdown, or a
|
|
// non-realtime graph that has finished processing. Some later
|
|
// AppendMessage will detect that the manager has been emptied, and
|
|
// delete it.
|
|
NS_ASSERTION(mGraph->mForceShutDown || !mGraph->mRealtime,
|
|
"Not in forced shutdown?");
|
|
for (MediaStream* stream : mGraph->AllStreams()) {
|
|
DOMMediaStream* s = stream->GetWrapper();
|
|
if (s) {
|
|
s->NotifyMediaStreamGraphShutdown();
|
|
}
|
|
}
|
|
|
|
mGraph->mLifecycleState =
|
|
MediaStreamGraphImpl::LIFECYCLE_WAITING_FOR_STREAM_DESTRUCTION;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
private:
|
|
RefPtr<MediaStreamGraphImpl> mGraph;
|
|
};
|
|
|
|
class MediaStreamGraphStableStateRunnable : public nsRunnable {
|
|
public:
|
|
explicit MediaStreamGraphStableStateRunnable(MediaStreamGraphImpl* aGraph,
|
|
bool aSourceIsMSG)
|
|
: mGraph(aGraph)
|
|
, mSourceIsMSG(aSourceIsMSG)
|
|
{
|
|
}
|
|
NS_IMETHOD Run()
|
|
{
|
|
if (mGraph) {
|
|
mGraph->RunInStableState(mSourceIsMSG);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
private:
|
|
RefPtr<MediaStreamGraphImpl> mGraph;
|
|
bool mSourceIsMSG;
|
|
};
|
|
|
|
/*
|
|
* Control messages forwarded from main thread to graph manager thread
|
|
*/
|
|
class CreateMessage : public ControlMessage {
|
|
public:
|
|
explicit CreateMessage(MediaStream* aStream) : ControlMessage(aStream) {}
|
|
void Run() override
|
|
{
|
|
mStream->GraphImpl()->AddStreamGraphThread(mStream);
|
|
}
|
|
void RunDuringShutdown() override
|
|
{
|
|
// Make sure to run this message during shutdown too, to make sure
|
|
// that we balance the number of streams registered with the graph
|
|
// as they're destroyed during shutdown.
|
|
Run();
|
|
}
|
|
};
|
|
|
|
} // namespace
|
|
|
|
void
|
|
MediaStreamGraphImpl::RunInStableState(bool aSourceIsMSG)
|
|
{
|
|
NS_ASSERTION(NS_IsMainThread(), "Must be called on main thread");
|
|
|
|
nsTArray<nsCOMPtr<nsIRunnable> > runnables;
|
|
// When we're doing a forced shutdown, pending control messages may be
|
|
// run on the main thread via RunDuringShutdown. Those messages must
|
|
// run without the graph monitor being held. So, we collect them here.
|
|
nsTArray<nsAutoPtr<ControlMessage> > controlMessagesToRunDuringShutdown;
|
|
|
|
{
|
|
MonitorAutoLock lock(mMonitor);
|
|
if (aSourceIsMSG) {
|
|
MOZ_ASSERT(mPostedRunInStableStateEvent);
|
|
mPostedRunInStableStateEvent = false;
|
|
}
|
|
|
|
#ifdef ENABLE_LIFECYCLE_LOG
|
|
// This should be kept in sync with the LifecycleState enum in
|
|
// MediaStreamGraphImpl.h
|
|
const char * LifecycleState_str[] = {
|
|
"LIFECYCLE_THREAD_NOT_STARTED",
|
|
"LIFECYCLE_RUNNING",
|
|
"LIFECYCLE_WAITING_FOR_MAIN_THREAD_CLEANUP",
|
|
"LIFECYCLE_WAITING_FOR_THREAD_SHUTDOWN",
|
|
"LIFECYCLE_WAITING_FOR_STREAM_DESTRUCTION"
|
|
};
|
|
|
|
if (mLifecycleState != LIFECYCLE_RUNNING) {
|
|
LIFECYCLE_LOG("Running %p in stable state. Current state: %s\n",
|
|
this, LifecycleState_str[mLifecycleState]);
|
|
}
|
|
#endif
|
|
|
|
runnables.SwapElements(mUpdateRunnables);
|
|
for (uint32_t i = 0; i < mStreamUpdates.Length(); ++i) {
|
|
StreamUpdate* update = &mStreamUpdates[i];
|
|
if (update->mStream) {
|
|
ApplyStreamUpdate(update);
|
|
}
|
|
}
|
|
mStreamUpdates.Clear();
|
|
|
|
if (mCurrentTaskMessageQueue.IsEmpty()) {
|
|
if (mLifecycleState == LIFECYCLE_WAITING_FOR_MAIN_THREAD_CLEANUP && IsEmpty()) {
|
|
// Complete shutdown. First, ensure that this graph is no longer used.
|
|
// A new graph graph will be created if one is needed.
|
|
// Asynchronously clean up old graph. We don't want to do this
|
|
// synchronously because it spins the event loop waiting for threads
|
|
// to shut down, and we don't want to do that in a stable state handler.
|
|
mLifecycleState = LIFECYCLE_WAITING_FOR_THREAD_SHUTDOWN;
|
|
LIFECYCLE_LOG("Sending MediaStreamGraphShutDownRunnable %p", this);
|
|
nsCOMPtr<nsIRunnable> event = new MediaStreamGraphShutDownRunnable(this );
|
|
NS_DispatchToMainThread(event.forget());
|
|
|
|
LIFECYCLE_LOG("Disconnecting MediaStreamGraph %p", this);
|
|
MediaStreamGraphImpl* graph;
|
|
if (gGraphs.Get(uint32_t(mAudioChannel), &graph) && graph == this) {
|
|
// null out gGraph if that's the graph being shut down
|
|
gGraphs.Remove(uint32_t(mAudioChannel));
|
|
}
|
|
}
|
|
} else {
|
|
if (mLifecycleState <= LIFECYCLE_WAITING_FOR_MAIN_THREAD_CLEANUP) {
|
|
MessageBlock* block = mBackMessageQueue.AppendElement();
|
|
block->mMessages.SwapElements(mCurrentTaskMessageQueue);
|
|
EnsureNextIterationLocked();
|
|
}
|
|
|
|
// If the MediaStreamGraph has more messages going to it, try to revive
|
|
// it to process those messages. Don't do this if we're in a forced
|
|
// shutdown or it's a non-realtime graph that has already terminated
|
|
// processing.
|
|
if (mLifecycleState == LIFECYCLE_WAITING_FOR_MAIN_THREAD_CLEANUP &&
|
|
mRealtime && !mForceShutDown) {
|
|
mLifecycleState = LIFECYCLE_RUNNING;
|
|
// Revive the MediaStreamGraph since we have more messages going to it.
|
|
// Note that we need to put messages into its queue before reviving it,
|
|
// or it might exit immediately.
|
|
{
|
|
LIFECYCLE_LOG("Reviving a graph (%p) ! %s\n",
|
|
this, CurrentDriver()->AsAudioCallbackDriver() ? "AudioDriver" :
|
|
"SystemDriver");
|
|
RefPtr<GraphDriver> driver = CurrentDriver();
|
|
MonitorAutoUnlock unlock(mMonitor);
|
|
driver->Revive();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Don't start the thread for a non-realtime graph until it has been
|
|
// explicitly started by StartNonRealtimeProcessing.
|
|
if (mLifecycleState == LIFECYCLE_THREAD_NOT_STARTED &&
|
|
(mRealtime || mNonRealtimeProcessing)) {
|
|
mLifecycleState = LIFECYCLE_RUNNING;
|
|
// Start the thread now. We couldn't start it earlier because
|
|
// the graph might exit immediately on finding it has no streams. The
|
|
// first message for a new graph must create a stream.
|
|
{
|
|
// We should exit the monitor for now, because starting a stream might
|
|
// take locks, and we don't want to deadlock.
|
|
LIFECYCLE_LOG("Starting a graph (%p) ! %s\n",
|
|
this,
|
|
CurrentDriver()->AsAudioCallbackDriver() ? "AudioDriver" :
|
|
"SystemDriver");
|
|
RefPtr<GraphDriver> driver = CurrentDriver();
|
|
MonitorAutoUnlock unlock(mMonitor);
|
|
driver->Start();
|
|
}
|
|
}
|
|
|
|
if ((mForceShutDown || !mRealtime) &&
|
|
mLifecycleState == LIFECYCLE_WAITING_FOR_MAIN_THREAD_CLEANUP) {
|
|
// Defer calls to RunDuringShutdown() to happen while mMonitor is not held.
|
|
for (uint32_t i = 0; i < mBackMessageQueue.Length(); ++i) {
|
|
MessageBlock& mb = mBackMessageQueue[i];
|
|
controlMessagesToRunDuringShutdown.AppendElements(Move(mb.mMessages));
|
|
}
|
|
mBackMessageQueue.Clear();
|
|
MOZ_ASSERT(mCurrentTaskMessageQueue.IsEmpty());
|
|
// Stop MediaStreamGraph threads. Do not clear gGraph since
|
|
// we have outstanding DOM objects that may need it.
|
|
mLifecycleState = LIFECYCLE_WAITING_FOR_THREAD_SHUTDOWN;
|
|
nsCOMPtr<nsIRunnable> event = new MediaStreamGraphShutDownRunnable(this);
|
|
NS_DispatchToMainThread(event.forget());
|
|
}
|
|
|
|
mDetectedNotRunning = mLifecycleState > LIFECYCLE_RUNNING;
|
|
}
|
|
|
|
// Make sure we get a new current time in the next event loop task
|
|
if (!aSourceIsMSG) {
|
|
MOZ_ASSERT(mPostedRunInStableState);
|
|
mPostedRunInStableState = false;
|
|
}
|
|
|
|
for (uint32_t i = 0; i < controlMessagesToRunDuringShutdown.Length(); ++i) {
|
|
controlMessagesToRunDuringShutdown[i]->RunDuringShutdown();
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
mCanRunMessagesSynchronously = mDetectedNotRunning &&
|
|
mLifecycleState >= LIFECYCLE_WAITING_FOR_THREAD_SHUTDOWN;
|
|
#endif
|
|
|
|
for (uint32_t i = 0; i < runnables.Length(); ++i) {
|
|
runnables[i]->Run();
|
|
// "Direct" tail dispatcher are supposed to run immediately following the
|
|
// execution of the current task. So the meta-tasking that we do here in
|
|
// RunInStableState() breaks that abstraction a bit unless we handle it here.
|
|
//
|
|
// This is particularly important because we can end up with a "stream
|
|
// ended" notification immediately following a "stream available" notification,
|
|
// and we need to make sure that the watcher responding to "stream available"
|
|
// has a chance to run before the second notification starts tearing things
|
|
// down.
|
|
AbstractThread::MainThread()->TailDispatcher().DrainDirectTasks();
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
MediaStreamGraphImpl::EnsureRunInStableState()
|
|
{
|
|
NS_ASSERTION(NS_IsMainThread(), "main thread only");
|
|
|
|
if (mPostedRunInStableState)
|
|
return;
|
|
mPostedRunInStableState = true;
|
|
nsCOMPtr<nsIRunnable> event = new MediaStreamGraphStableStateRunnable(this, false);
|
|
nsContentUtils::RunInStableState(event.forget());
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::EnsureStableStateEventPosted()
|
|
{
|
|
mMonitor.AssertCurrentThreadOwns();
|
|
|
|
if (mPostedRunInStableStateEvent)
|
|
return;
|
|
mPostedRunInStableStateEvent = true;
|
|
nsCOMPtr<nsIRunnable> event = new MediaStreamGraphStableStateRunnable(this, true);
|
|
NS_DispatchToMainThread(event.forget());
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::AppendMessage(ControlMessage* aMessage)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread(), "main thread only");
|
|
MOZ_ASSERT(!aMessage->GetStream() ||
|
|
!aMessage->GetStream()->IsDestroyed(),
|
|
"Stream already destroyed");
|
|
|
|
if (mDetectedNotRunning &&
|
|
mLifecycleState > LIFECYCLE_WAITING_FOR_MAIN_THREAD_CLEANUP) {
|
|
// The graph control loop is not running and main thread cleanup has
|
|
// happened. From now on we can't append messages to mCurrentTaskMessageQueue,
|
|
// because that will never be processed again, so just RunDuringShutdown
|
|
// this message.
|
|
// This should only happen during forced shutdown, or after a non-realtime
|
|
// graph has finished processing.
|
|
#ifdef DEBUG
|
|
MOZ_ASSERT(mCanRunMessagesSynchronously);
|
|
mCanRunMessagesSynchronously = false;
|
|
#endif
|
|
aMessage->RunDuringShutdown();
|
|
#ifdef DEBUG
|
|
mCanRunMessagesSynchronously = true;
|
|
#endif
|
|
delete aMessage;
|
|
if (IsEmpty() &&
|
|
mLifecycleState >= LIFECYCLE_WAITING_FOR_STREAM_DESTRUCTION) {
|
|
|
|
MediaStreamGraphImpl* graph;
|
|
if (gGraphs.Get(uint32_t(mAudioChannel), &graph) && graph == this) {
|
|
gGraphs.Remove(uint32_t(mAudioChannel));
|
|
}
|
|
|
|
Destroy();
|
|
}
|
|
return;
|
|
}
|
|
|
|
mCurrentTaskMessageQueue.AppendElement(aMessage);
|
|
EnsureRunInStableState();
|
|
}
|
|
|
|
MediaStream::MediaStream(DOMMediaStream* aWrapper)
|
|
: mBufferStartTime(0)
|
|
, mStartBlocking(GRAPH_TIME_MAX)
|
|
, mSuspendedCount(0)
|
|
, mFinished(false)
|
|
, mNotifiedFinished(false)
|
|
, mNotifiedBlocked(false)
|
|
, mHasCurrentData(false)
|
|
, mNotifiedHasCurrentData(false)
|
|
, mWrapper(aWrapper)
|
|
, mMainThreadCurrentTime(0)
|
|
, mMainThreadFinished(false)
|
|
, mFinishedNotificationSent(false)
|
|
, mMainThreadDestroyed(false)
|
|
, mGraph(nullptr)
|
|
, mAudioChannelType(dom::AudioChannel::Normal)
|
|
{
|
|
MOZ_COUNT_CTOR(MediaStream);
|
|
// aWrapper should not already be connected to a MediaStream! It needs
|
|
// to be hooked up to this stream, and since this stream is only just
|
|
// being created now, aWrapper must not be connected to anything.
|
|
NS_ASSERTION(!aWrapper || !aWrapper->GetPlaybackStream(),
|
|
"Wrapper already has another media stream hooked up to it!");
|
|
}
|
|
|
|
size_t
|
|
MediaStream::SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const
|
|
{
|
|
size_t amount = 0;
|
|
|
|
// Not owned:
|
|
// - mGraph - Not reported here
|
|
// - mConsumers - elements
|
|
// Future:
|
|
// - mWrapper
|
|
// - mVideoOutputs - elements
|
|
// - mLastPlayedVideoFrame
|
|
// - mListeners - elements
|
|
// - mAudioOutputStream - elements
|
|
|
|
amount += mBuffer.SizeOfExcludingThis(aMallocSizeOf);
|
|
amount += mAudioOutputs.ShallowSizeOfExcludingThis(aMallocSizeOf);
|
|
amount += mVideoOutputs.ShallowSizeOfExcludingThis(aMallocSizeOf);
|
|
amount += mListeners.ShallowSizeOfExcludingThis(aMallocSizeOf);
|
|
amount += mMainThreadListeners.ShallowSizeOfExcludingThis(aMallocSizeOf);
|
|
amount += mDisabledTrackIDs.ShallowSizeOfExcludingThis(aMallocSizeOf);
|
|
amount += mConsumers.ShallowSizeOfExcludingThis(aMallocSizeOf);
|
|
|
|
return amount;
|
|
}
|
|
|
|
size_t
|
|
MediaStream::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const
|
|
{
|
|
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
|
|
}
|
|
|
|
MediaStreamGraphImpl*
|
|
MediaStream::GraphImpl()
|
|
{
|
|
return mGraph;
|
|
}
|
|
|
|
MediaStreamGraph*
|
|
MediaStream::Graph()
|
|
{
|
|
return mGraph;
|
|
}
|
|
|
|
void
|
|
MediaStream::SetGraphImpl(MediaStreamGraphImpl* aGraph)
|
|
{
|
|
MOZ_ASSERT(!mGraph, "Should only be called once");
|
|
mGraph = aGraph;
|
|
mAudioChannelType = aGraph->AudioChannel();
|
|
mBuffer.InitGraphRate(aGraph->GraphRate());
|
|
}
|
|
|
|
void
|
|
MediaStream::SetGraphImpl(MediaStreamGraph* aGraph)
|
|
{
|
|
MediaStreamGraphImpl* graph = static_cast<MediaStreamGraphImpl*>(aGraph);
|
|
SetGraphImpl(graph);
|
|
}
|
|
|
|
StreamTime
|
|
MediaStream::GraphTimeToStreamTime(GraphTime aTime)
|
|
{
|
|
NS_ASSERTION(mStartBlocking == GraphImpl()->mStateComputedTime ||
|
|
aTime <= mStartBlocking,
|
|
"Incorrectly ignoring blocking!");
|
|
return aTime - mBufferStartTime;
|
|
}
|
|
|
|
GraphTime
|
|
MediaStream::StreamTimeToGraphTime(StreamTime aTime)
|
|
{
|
|
NS_ASSERTION(mStartBlocking == GraphImpl()->mStateComputedTime ||
|
|
aTime + mBufferStartTime <= mStartBlocking,
|
|
"Incorrectly ignoring blocking!");
|
|
return aTime + mBufferStartTime;
|
|
}
|
|
|
|
StreamTime
|
|
MediaStream::GraphTimeToStreamTimeWithBlocking(GraphTime aTime)
|
|
{
|
|
return GraphImpl()->GraphTimeToStreamTimeWithBlocking(this, aTime);
|
|
}
|
|
|
|
void
|
|
MediaStream::FinishOnGraphThread()
|
|
{
|
|
GraphImpl()->FinishStream(this);
|
|
}
|
|
|
|
StreamBuffer::Track*
|
|
MediaStream::EnsureTrack(TrackID aTrackId)
|
|
{
|
|
StreamBuffer::Track* track = mBuffer.FindTrack(aTrackId);
|
|
if (!track) {
|
|
nsAutoPtr<MediaSegment> segment(new AudioSegment());
|
|
for (uint32_t j = 0; j < mListeners.Length(); ++j) {
|
|
MediaStreamListener* l = mListeners[j];
|
|
l->NotifyQueuedTrackChanges(Graph(), aTrackId, 0,
|
|
MediaStreamListener::TRACK_EVENT_CREATED,
|
|
*segment);
|
|
// TODO If we ever need to ensure several tracks at once, we will have to
|
|
// change this.
|
|
l->NotifyFinishedTrackCreation(Graph());
|
|
}
|
|
track = &mBuffer.AddTrack(aTrackId, 0, segment.forget());
|
|
}
|
|
return track;
|
|
}
|
|
|
|
void
|
|
MediaStream::RemoveAllListenersImpl()
|
|
{
|
|
for (int32_t i = mListeners.Length() - 1; i >= 0; --i) {
|
|
RefPtr<MediaStreamListener> listener = mListeners[i].forget();
|
|
listener->NotifyEvent(GraphImpl(), MediaStreamListener::EVENT_REMOVED);
|
|
}
|
|
mListeners.Clear();
|
|
}
|
|
|
|
void
|
|
MediaStream::DestroyImpl()
|
|
{
|
|
for (int32_t i = mConsumers.Length() - 1; i >= 0; --i) {
|
|
mConsumers[i]->Disconnect();
|
|
}
|
|
mGraph = nullptr;
|
|
}
|
|
|
|
void
|
|
MediaStream::Destroy()
|
|
{
|
|
// Keep this stream alive until we leave this method
|
|
RefPtr<MediaStream> kungFuDeathGrip = this;
|
|
|
|
class Message : public ControlMessage {
|
|
public:
|
|
explicit Message(MediaStream* aStream) : ControlMessage(aStream) {}
|
|
void Run() override
|
|
{
|
|
mStream->RemoveAllListenersImpl();
|
|
auto graph = mStream->GraphImpl();
|
|
mStream->DestroyImpl();
|
|
graph->RemoveStreamGraphThread(mStream);
|
|
}
|
|
void RunDuringShutdown() override
|
|
{ Run(); }
|
|
};
|
|
mWrapper = nullptr;
|
|
GraphImpl()->AppendMessage(new Message(this));
|
|
// Message::RunDuringShutdown may have removed this stream from the graph,
|
|
// but our kungFuDeathGrip above will have kept this stream alive if
|
|
// necessary.
|
|
mMainThreadDestroyed = true;
|
|
}
|
|
|
|
void
|
|
MediaStream::AddAudioOutput(void* aKey)
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
Message(MediaStream* aStream, void* aKey) : ControlMessage(aStream), mKey(aKey) {}
|
|
void Run() override
|
|
{
|
|
mStream->AddAudioOutputImpl(mKey);
|
|
}
|
|
void* mKey;
|
|
};
|
|
GraphImpl()->AppendMessage(new Message(this, aKey));
|
|
}
|
|
|
|
void
|
|
MediaStream::SetAudioOutputVolumeImpl(void* aKey, float aVolume)
|
|
{
|
|
for (uint32_t i = 0; i < mAudioOutputs.Length(); ++i) {
|
|
if (mAudioOutputs[i].mKey == aKey) {
|
|
mAudioOutputs[i].mVolume = aVolume;
|
|
return;
|
|
}
|
|
}
|
|
NS_ERROR("Audio output key not found");
|
|
}
|
|
|
|
void
|
|
MediaStream::SetAudioOutputVolume(void* aKey, float aVolume)
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
Message(MediaStream* aStream, void* aKey, float aVolume) :
|
|
ControlMessage(aStream), mKey(aKey), mVolume(aVolume) {}
|
|
void Run() override
|
|
{
|
|
mStream->SetAudioOutputVolumeImpl(mKey, mVolume);
|
|
}
|
|
void* mKey;
|
|
float mVolume;
|
|
};
|
|
GraphImpl()->AppendMessage(new Message(this, aKey, aVolume));
|
|
}
|
|
|
|
void
|
|
MediaStream::AddAudioOutputImpl(void* aKey)
|
|
{
|
|
STREAM_LOG(LogLevel::Info, ("MediaStream %p Adding AudioOutput for key %p",
|
|
this, aKey));
|
|
mAudioOutputs.AppendElement(AudioOutput(aKey));
|
|
}
|
|
|
|
void
|
|
MediaStream::RemoveAudioOutputImpl(void* aKey)
|
|
{
|
|
STREAM_LOG(LogLevel::Info, ("MediaStream %p Removing AudioOutput for key %p",
|
|
this, aKey));
|
|
for (uint32_t i = 0; i < mAudioOutputs.Length(); ++i) {
|
|
if (mAudioOutputs[i].mKey == aKey) {
|
|
mAudioOutputs.RemoveElementAt(i);
|
|
return;
|
|
}
|
|
}
|
|
NS_ERROR("Audio output key not found");
|
|
}
|
|
|
|
void
|
|
MediaStream::RemoveAudioOutput(void* aKey)
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
Message(MediaStream* aStream, void* aKey) :
|
|
ControlMessage(aStream), mKey(aKey) {}
|
|
void Run() override
|
|
{
|
|
mStream->RemoveAudioOutputImpl(mKey);
|
|
}
|
|
void* mKey;
|
|
};
|
|
GraphImpl()->AppendMessage(new Message(this, aKey));
|
|
}
|
|
|
|
void
|
|
MediaStream::AddVideoOutputImpl(already_AddRefed<VideoFrameContainer> aContainer)
|
|
{
|
|
RefPtr<VideoFrameContainer> container = aContainer;
|
|
STREAM_LOG(LogLevel::Info, ("MediaStream %p Adding VideoFrameContainer %p as output",
|
|
this, container.get()));
|
|
*mVideoOutputs.AppendElement() = container.forget();
|
|
}
|
|
|
|
void
|
|
MediaStream::RemoveVideoOutputImpl(VideoFrameContainer* aContainer)
|
|
{
|
|
STREAM_LOG(LogLevel::Info, ("MediaStream %p Removing VideoFrameContainer %p as output",
|
|
this, aContainer));
|
|
// Ensure that any frames currently queued for playback by the compositor
|
|
// are removed.
|
|
aContainer->ClearFutureFrames();
|
|
mVideoOutputs.RemoveElement(aContainer);
|
|
}
|
|
|
|
void
|
|
MediaStream::AddVideoOutput(VideoFrameContainer* aContainer)
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
Message(MediaStream* aStream, VideoFrameContainer* aContainer) :
|
|
ControlMessage(aStream), mContainer(aContainer) {}
|
|
void Run() override
|
|
{
|
|
mStream->AddVideoOutputImpl(mContainer.forget());
|
|
}
|
|
RefPtr<VideoFrameContainer> mContainer;
|
|
};
|
|
GraphImpl()->AppendMessage(new Message(this, aContainer));
|
|
}
|
|
|
|
void
|
|
MediaStream::RemoveVideoOutput(VideoFrameContainer* aContainer)
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
Message(MediaStream* aStream, VideoFrameContainer* aContainer) :
|
|
ControlMessage(aStream), mContainer(aContainer) {}
|
|
void Run() override
|
|
{
|
|
mStream->RemoveVideoOutputImpl(mContainer);
|
|
}
|
|
RefPtr<VideoFrameContainer> mContainer;
|
|
};
|
|
GraphImpl()->AppendMessage(new Message(this, aContainer));
|
|
}
|
|
|
|
void
|
|
MediaStream::Suspend()
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
explicit Message(MediaStream* aStream) :
|
|
ControlMessage(aStream) {}
|
|
void Run() override
|
|
{
|
|
mStream->GraphImpl()->IncrementSuspendCount(mStream);
|
|
}
|
|
};
|
|
|
|
// This can happen if this method has been called asynchronously, and the
|
|
// stream has been destroyed since then.
|
|
if (mMainThreadDestroyed) {
|
|
return;
|
|
}
|
|
GraphImpl()->AppendMessage(new Message(this));
|
|
}
|
|
|
|
void
|
|
MediaStream::Resume()
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
explicit Message(MediaStream* aStream) :
|
|
ControlMessage(aStream) {}
|
|
void Run() override
|
|
{
|
|
mStream->GraphImpl()->DecrementSuspendCount(mStream);
|
|
}
|
|
};
|
|
|
|
// This can happen if this method has been called asynchronously, and the
|
|
// stream has been destroyed since then.
|
|
if (mMainThreadDestroyed) {
|
|
return;
|
|
}
|
|
GraphImpl()->AppendMessage(new Message(this));
|
|
}
|
|
|
|
void
|
|
MediaStream::AddListenerImpl(already_AddRefed<MediaStreamListener> aListener)
|
|
{
|
|
MediaStreamListener* listener = *mListeners.AppendElement() = aListener;
|
|
listener->NotifyBlockingChanged(GraphImpl(),
|
|
mNotifiedBlocked ? MediaStreamListener::BLOCKED : MediaStreamListener::UNBLOCKED);
|
|
if (mNotifiedFinished) {
|
|
listener->NotifyEvent(GraphImpl(), MediaStreamListener::EVENT_FINISHED);
|
|
}
|
|
if (mNotifiedHasCurrentData) {
|
|
listener->NotifyHasCurrentData(GraphImpl());
|
|
}
|
|
}
|
|
|
|
void
|
|
MediaStream::AddListener(MediaStreamListener* aListener)
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
Message(MediaStream* aStream, MediaStreamListener* aListener) :
|
|
ControlMessage(aStream), mListener(aListener) {}
|
|
void Run() override
|
|
{
|
|
mStream->AddListenerImpl(mListener.forget());
|
|
}
|
|
RefPtr<MediaStreamListener> mListener;
|
|
};
|
|
GraphImpl()->AppendMessage(new Message(this, aListener));
|
|
}
|
|
|
|
void
|
|
MediaStream::RemoveListenerImpl(MediaStreamListener* aListener)
|
|
{
|
|
// wouldn't need this if we could do it in the opposite order
|
|
RefPtr<MediaStreamListener> listener(aListener);
|
|
mListeners.RemoveElement(aListener);
|
|
listener->NotifyEvent(GraphImpl(), MediaStreamListener::EVENT_REMOVED);
|
|
}
|
|
|
|
void
|
|
MediaStream::RemoveListener(MediaStreamListener* aListener)
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
Message(MediaStream* aStream, MediaStreamListener* aListener) :
|
|
ControlMessage(aStream), mListener(aListener) {}
|
|
void Run() override
|
|
{
|
|
mStream->RemoveListenerImpl(mListener);
|
|
}
|
|
RefPtr<MediaStreamListener> mListener;
|
|
};
|
|
// If the stream is destroyed the Listeners have or will be
|
|
// removed.
|
|
if (!IsDestroyed()) {
|
|
GraphImpl()->AppendMessage(new Message(this, aListener));
|
|
}
|
|
}
|
|
|
|
void
|
|
MediaStream::RunAfterPendingUpdates(already_AddRefed<nsIRunnable> aRunnable)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MediaStreamGraphImpl* graph = GraphImpl();
|
|
nsCOMPtr<nsIRunnable> runnable(aRunnable);
|
|
|
|
// Special case when a non-realtime graph has not started, to ensure the
|
|
// runnable will run in finite time.
|
|
if (!(graph->mRealtime || graph->mNonRealtimeProcessing)) {
|
|
runnable->Run();
|
|
return;
|
|
}
|
|
|
|
class Message : public ControlMessage {
|
|
public:
|
|
explicit Message(MediaStream* aStream,
|
|
already_AddRefed<nsIRunnable> aRunnable)
|
|
: ControlMessage(aStream)
|
|
, mRunnable(aRunnable) {}
|
|
void Run() override
|
|
{
|
|
mStream->Graph()->
|
|
DispatchToMainThreadAfterStreamStateUpdate(mRunnable.forget());
|
|
}
|
|
void RunDuringShutdown() override
|
|
{
|
|
// Don't run mRunnable now as it may call AppendMessage() which would
|
|
// assume that there are no remaining controlMessagesToRunDuringShutdown.
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
NS_DispatchToCurrentThread(mRunnable);
|
|
}
|
|
private:
|
|
nsCOMPtr<nsIRunnable> mRunnable;
|
|
};
|
|
|
|
graph->AppendMessage(new Message(this, runnable.forget()));
|
|
}
|
|
|
|
void
|
|
MediaStream::SetTrackEnabledImpl(TrackID aTrackID, bool aEnabled)
|
|
{
|
|
if (aEnabled) {
|
|
mDisabledTrackIDs.RemoveElement(aTrackID);
|
|
} else {
|
|
if (!mDisabledTrackIDs.Contains(aTrackID)) {
|
|
mDisabledTrackIDs.AppendElement(aTrackID);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
MediaStream::SetTrackEnabled(TrackID aTrackID, bool aEnabled)
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
Message(MediaStream* aStream, TrackID aTrackID, bool aEnabled) :
|
|
ControlMessage(aStream), mTrackID(aTrackID), mEnabled(aEnabled) {}
|
|
void Run() override
|
|
{
|
|
mStream->SetTrackEnabledImpl(mTrackID, mEnabled);
|
|
}
|
|
TrackID mTrackID;
|
|
bool mEnabled;
|
|
};
|
|
GraphImpl()->AppendMessage(new Message(this, aTrackID, aEnabled));
|
|
}
|
|
|
|
void
|
|
MediaStream::ApplyTrackDisabling(TrackID aTrackID, MediaSegment* aSegment, MediaSegment* aRawSegment)
|
|
{
|
|
if (!mDisabledTrackIDs.Contains(aTrackID)) {
|
|
return;
|
|
}
|
|
aSegment->ReplaceWithDisabled();
|
|
if (aRawSegment) {
|
|
aRawSegment->ReplaceWithDisabled();
|
|
}
|
|
}
|
|
|
|
void
|
|
MediaStream::AddMainThreadListener(MainThreadMediaStreamListener* aListener)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(aListener);
|
|
MOZ_ASSERT(!mMainThreadListeners.Contains(aListener));
|
|
|
|
mMainThreadListeners.AppendElement(aListener);
|
|
|
|
// If it is not yet time to send the notification, then finish here.
|
|
if (!mFinishedNotificationSent) {
|
|
return;
|
|
}
|
|
|
|
class NotifyRunnable final : public nsRunnable
|
|
{
|
|
public:
|
|
explicit NotifyRunnable(MediaStream* aStream)
|
|
: mStream(aStream)
|
|
{}
|
|
|
|
NS_IMETHOD Run() override
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
mStream->NotifyMainThreadListeners();
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
~NotifyRunnable() {}
|
|
|
|
RefPtr<MediaStream> mStream;
|
|
};
|
|
|
|
RefPtr<nsRunnable> runnable = new NotifyRunnable(this);
|
|
NS_WARN_IF(NS_FAILED(NS_DispatchToMainThread(runnable.forget())));
|
|
}
|
|
|
|
void
|
|
SourceMediaStream::DestroyImpl()
|
|
{
|
|
// Hold mMutex while mGraph is reset so that other threads holding mMutex
|
|
// can null-check know that the graph will not destroyed.
|
|
MutexAutoLock lock(mMutex);
|
|
MediaStream::DestroyImpl();
|
|
}
|
|
|
|
void
|
|
SourceMediaStream::SetPullEnabled(bool aEnabled)
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
mPullEnabled = aEnabled;
|
|
if (mPullEnabled && GraphImpl()) {
|
|
GraphImpl()->EnsureNextIteration();
|
|
}
|
|
}
|
|
|
|
void
|
|
SourceMediaStream::AddTrackInternal(TrackID aID, TrackRate aRate, StreamTime aStart,
|
|
MediaSegment* aSegment, uint32_t aFlags)
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
nsTArray<TrackData> *track_data = (aFlags & ADDTRACK_QUEUED) ?
|
|
&mPendingTracks : &mUpdateTracks;
|
|
TrackData* data = track_data->AppendElement();
|
|
data->mID = aID;
|
|
data->mInputRate = aRate;
|
|
data->mResamplerChannelCount = 0;
|
|
data->mStart = aStart;
|
|
data->mEndOfFlushedData = aStart;
|
|
data->mCommands = TRACK_CREATE;
|
|
data->mData = aSegment;
|
|
if (!(aFlags & ADDTRACK_QUEUED) && GraphImpl()) {
|
|
GraphImpl()->EnsureNextIteration();
|
|
}
|
|
}
|
|
|
|
void
|
|
SourceMediaStream::FinishAddTracks()
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
mUpdateTracks.AppendElements(Move(mPendingTracks));
|
|
if (GraphImpl()) {
|
|
GraphImpl()->EnsureNextIteration();
|
|
}
|
|
}
|
|
|
|
StreamBuffer::Track*
|
|
SourceMediaStream::FindTrack(TrackID aID)
|
|
{
|
|
return mBuffer.FindTrack(aID);
|
|
}
|
|
|
|
void
|
|
SourceMediaStream::ResampleAudioToGraphSampleRate(TrackData* aTrackData, MediaSegment* aSegment)
|
|
{
|
|
if (aSegment->GetType() != MediaSegment::AUDIO ||
|
|
aTrackData->mInputRate == GraphImpl()->GraphRate()) {
|
|
return;
|
|
}
|
|
AudioSegment* segment = static_cast<AudioSegment*>(aSegment);
|
|
int channels = segment->ChannelCount();
|
|
|
|
// If this segment is just silence, we delay instanciating the resampler. We
|
|
// also need to recreate the resampler if the channel count changes.
|
|
if (channels && aTrackData->mResamplerChannelCount != channels) {
|
|
SpeexResamplerState* state = speex_resampler_init(channels,
|
|
aTrackData->mInputRate,
|
|
GraphImpl()->GraphRate(),
|
|
SPEEX_RESAMPLER_QUALITY_MIN,
|
|
nullptr);
|
|
if (!state) {
|
|
return;
|
|
}
|
|
aTrackData->mResampler.own(state);
|
|
aTrackData->mResamplerChannelCount = channels;
|
|
}
|
|
segment->ResampleChunks(aTrackData->mResampler, aTrackData->mInputRate, GraphImpl()->GraphRate());
|
|
}
|
|
|
|
bool
|
|
SourceMediaStream::AppendToTrack(TrackID aID, MediaSegment* aSegment, MediaSegment *aRawSegment)
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
// ::EndAllTrackAndFinished() can end these before the sources notice
|
|
bool appended = false;
|
|
auto graph = GraphImpl();
|
|
if (!mFinished && graph) {
|
|
TrackData *track = FindDataForTrack(aID);
|
|
if (track) {
|
|
// Data goes into mData, and on the next iteration of the MSG moves
|
|
// into the track's segment after NotifyQueuedTrackChanges(). This adds
|
|
// 0-10ms of delay before data gets to direct listeners.
|
|
// Indirect listeners (via subsequent TrackUnion nodes) are synced to
|
|
// playout time, and so can be delayed by buffering.
|
|
|
|
// Apply track disabling before notifying any consumers directly
|
|
// or inserting into the graph
|
|
ApplyTrackDisabling(aID, aSegment, aRawSegment);
|
|
|
|
ResampleAudioToGraphSampleRate(track, aSegment);
|
|
|
|
// Must notify first, since AppendFrom() will empty out aSegment
|
|
NotifyDirectConsumers(track, aRawSegment ? aRawSegment : aSegment);
|
|
track->mData->AppendFrom(aSegment); // note: aSegment is now dead
|
|
appended = true;
|
|
GraphImpl()->EnsureNextIteration();
|
|
} else {
|
|
aSegment->Clear();
|
|
}
|
|
}
|
|
return appended;
|
|
}
|
|
|
|
void
|
|
SourceMediaStream::NotifyDirectConsumers(TrackData *aTrack,
|
|
MediaSegment *aSegment)
|
|
{
|
|
// Call with mMutex locked
|
|
MOZ_ASSERT(aTrack);
|
|
|
|
for (uint32_t j = 0; j < mDirectListeners.Length(); ++j) {
|
|
MediaStreamDirectListener* l = mDirectListeners[j];
|
|
StreamTime offset = 0; // FIX! need a separate StreamTime.... or the end of the internal buffer
|
|
l->NotifyRealtimeData(static_cast<MediaStreamGraph*>(GraphImpl()), aTrack->mID,
|
|
offset, aTrack->mCommands, *aSegment);
|
|
}
|
|
}
|
|
|
|
// These handle notifying all the listeners of an event
|
|
void
|
|
SourceMediaStream::NotifyListenersEventImpl(MediaStreamListener::MediaStreamGraphEvent aEvent)
|
|
{
|
|
for (uint32_t j = 0; j < mListeners.Length(); ++j) {
|
|
MediaStreamListener* l = mListeners[j];
|
|
l->NotifyEvent(GraphImpl(), aEvent);
|
|
}
|
|
}
|
|
|
|
void
|
|
SourceMediaStream::NotifyListenersEvent(MediaStreamListener::MediaStreamGraphEvent aNewEvent)
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
Message(SourceMediaStream* aStream, MediaStreamListener::MediaStreamGraphEvent aEvent) :
|
|
ControlMessage(aStream), mEvent(aEvent) {}
|
|
void Run() override
|
|
{
|
|
mStream->AsSourceStream()->NotifyListenersEventImpl(mEvent);
|
|
}
|
|
MediaStreamListener::MediaStreamGraphEvent mEvent;
|
|
};
|
|
GraphImpl()->AppendMessage(new Message(this, aNewEvent));
|
|
}
|
|
|
|
void
|
|
SourceMediaStream::AddDirectListener(MediaStreamDirectListener* aListener)
|
|
{
|
|
bool wasEmpty;
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
wasEmpty = mDirectListeners.IsEmpty();
|
|
mDirectListeners.AppendElement(aListener);
|
|
}
|
|
|
|
if (wasEmpty) {
|
|
// Async
|
|
NotifyListenersEvent(MediaStreamListener::EVENT_HAS_DIRECT_LISTENERS);
|
|
}
|
|
}
|
|
|
|
void
|
|
SourceMediaStream::RemoveDirectListener(MediaStreamDirectListener* aListener)
|
|
{
|
|
bool isEmpty;
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
mDirectListeners.RemoveElement(aListener);
|
|
isEmpty = mDirectListeners.IsEmpty();
|
|
}
|
|
|
|
if (isEmpty) {
|
|
// Async
|
|
NotifyListenersEvent(MediaStreamListener::EVENT_HAS_NO_DIRECT_LISTENERS);
|
|
}
|
|
}
|
|
|
|
StreamTime
|
|
SourceMediaStream::GetEndOfAppendedData(TrackID aID)
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
TrackData *track = FindDataForTrack(aID);
|
|
if (track) {
|
|
return track->mEndOfFlushedData + track->mData->GetDuration();
|
|
}
|
|
NS_ERROR("Track not found");
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
SourceMediaStream::EndTrack(TrackID aID)
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
TrackData *track = FindDataForTrack(aID);
|
|
if (track) {
|
|
track->mCommands |= TRACK_END;
|
|
}
|
|
if (auto graph = GraphImpl()) {
|
|
graph->EnsureNextIteration();
|
|
}
|
|
}
|
|
|
|
void
|
|
SourceMediaStream::AdvanceKnownTracksTime(StreamTime aKnownTime)
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
MOZ_ASSERT(aKnownTime >= mUpdateKnownTracksTime);
|
|
mUpdateKnownTracksTime = aKnownTime;
|
|
if (auto graph = GraphImpl()) {
|
|
graph->EnsureNextIteration();
|
|
}
|
|
}
|
|
|
|
void
|
|
SourceMediaStream::FinishWithLockHeld()
|
|
{
|
|
mMutex.AssertCurrentThreadOwns();
|
|
mUpdateFinished = true;
|
|
if (auto graph = GraphImpl()) {
|
|
graph->EnsureNextIteration();
|
|
}
|
|
}
|
|
|
|
void
|
|
SourceMediaStream::EndAllTrackAndFinish()
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
for (uint32_t i = 0; i < mUpdateTracks.Length(); ++i) {
|
|
SourceMediaStream::TrackData* data = &mUpdateTracks[i];
|
|
data->mCommands |= TRACK_END;
|
|
}
|
|
mPendingTracks.Clear();
|
|
FinishWithLockHeld();
|
|
// we will call NotifyEvent() to let GetUserMedia know
|
|
}
|
|
|
|
void
|
|
SourceMediaStream::RegisterForAudioMixing()
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
mNeedsMixing = true;
|
|
}
|
|
|
|
bool
|
|
SourceMediaStream::NeedsMixing()
|
|
{
|
|
MutexAutoLock lock(mMutex);
|
|
return mNeedsMixing;
|
|
}
|
|
|
|
void
|
|
MediaInputPort::Init()
|
|
{
|
|
STREAM_LOG(LogLevel::Debug, ("Adding MediaInputPort %p (from %p to %p) to the graph",
|
|
this, mSource, mDest));
|
|
mSource->AddConsumer(this);
|
|
mDest->AddInput(this);
|
|
// mPortCount decremented via MediaInputPort::Destroy's message
|
|
++mDest->GraphImpl()->mPortCount;
|
|
}
|
|
|
|
void
|
|
MediaInputPort::Disconnect()
|
|
{
|
|
GraphImpl()->AssertOnGraphThreadOrNotRunning();
|
|
NS_ASSERTION(!mSource == !mDest,
|
|
"mSource must either both be null or both non-null");
|
|
if (!mSource)
|
|
return;
|
|
|
|
mSource->RemoveConsumer(this);
|
|
mDest->RemoveInput(this);
|
|
mSource = nullptr;
|
|
mDest = nullptr;
|
|
|
|
GraphImpl()->SetStreamOrderDirty();
|
|
}
|
|
|
|
MediaInputPort::InputInterval
|
|
MediaInputPort::GetNextInputInterval(GraphTime aTime)
|
|
{
|
|
InputInterval result = { GRAPH_TIME_MAX, GRAPH_TIME_MAX, false };
|
|
if (aTime >= mDest->mStartBlocking) {
|
|
return result;
|
|
}
|
|
result.mStart = aTime;
|
|
result.mEnd = mDest->mStartBlocking;
|
|
result.mInputIsBlocked = aTime >= mSource->mStartBlocking;
|
|
if (!result.mInputIsBlocked) {
|
|
result.mEnd = std::min(result.mEnd, mSource->mStartBlocking);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void
|
|
MediaInputPort::Destroy()
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
explicit Message(MediaInputPort* aPort)
|
|
: ControlMessage(nullptr), mPort(aPort) {}
|
|
void Run() override
|
|
{
|
|
mPort->Disconnect();
|
|
--mPort->GraphImpl()->mPortCount;
|
|
mPort->SetGraphImpl(nullptr);
|
|
NS_RELEASE(mPort);
|
|
}
|
|
void RunDuringShutdown() override
|
|
{
|
|
Run();
|
|
}
|
|
MediaInputPort* mPort;
|
|
};
|
|
GraphImpl()->AppendMessage(new Message(this));
|
|
}
|
|
|
|
MediaStreamGraphImpl*
|
|
MediaInputPort::GraphImpl()
|
|
{
|
|
return mGraph;
|
|
}
|
|
|
|
MediaStreamGraph*
|
|
MediaInputPort::Graph()
|
|
{
|
|
return mGraph;
|
|
}
|
|
|
|
void
|
|
MediaInputPort::SetGraphImpl(MediaStreamGraphImpl* aGraph)
|
|
{
|
|
MOZ_ASSERT(!mGraph || !aGraph, "Should only be set once");
|
|
mGraph = aGraph;
|
|
}
|
|
|
|
void
|
|
MediaInputPort::BlockTrackIdImpl(TrackID aTrackId)
|
|
{
|
|
mBlockedTracks.AppendElement(aTrackId);
|
|
}
|
|
|
|
void
|
|
MediaInputPort::BlockTrackId(TrackID aTrackId)
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
explicit Message(MediaInputPort* aPort, TrackID aTrackId)
|
|
: ControlMessage(aPort->GetDestination()),
|
|
mPort(aPort), mTrackId(aTrackId) {}
|
|
void Run() override
|
|
{
|
|
mPort->BlockTrackIdImpl(mTrackId);
|
|
}
|
|
void RunDuringShutdown() override
|
|
{
|
|
Run();
|
|
}
|
|
RefPtr<MediaInputPort> mPort;
|
|
TrackID mTrackId;
|
|
};
|
|
|
|
MOZ_ASSERT(aTrackId != TRACK_NONE && aTrackId != TRACK_INVALID && aTrackId != TRACK_ANY,
|
|
"Only explicit TrackID is allowed");
|
|
GraphImpl()->AppendMessage(new Message(this, aTrackId));
|
|
}
|
|
|
|
already_AddRefed<MediaInputPort>
|
|
ProcessedMediaStream::AllocateInputPort(MediaStream* aStream, TrackID aTrackID,
|
|
uint16_t aInputNumber, uint16_t aOutputNumber)
|
|
{
|
|
// This method creates two references to the MediaInputPort: one for
|
|
// the main thread, and one for the MediaStreamGraph.
|
|
class Message : public ControlMessage {
|
|
public:
|
|
explicit Message(MediaInputPort* aPort)
|
|
: ControlMessage(aPort->GetDestination()),
|
|
mPort(aPort) {}
|
|
void Run() override
|
|
{
|
|
mPort->Init();
|
|
// The graph holds its reference implicitly
|
|
mPort->GraphImpl()->SetStreamOrderDirty();
|
|
Unused << mPort.forget();
|
|
}
|
|
void RunDuringShutdown() override
|
|
{
|
|
Run();
|
|
}
|
|
RefPtr<MediaInputPort> mPort;
|
|
};
|
|
|
|
MOZ_ASSERT(aStream->GraphImpl() == GraphImpl());
|
|
MOZ_ASSERT(aTrackID != TRACK_NONE && aTrackID != TRACK_INVALID,
|
|
"Only TRACK_ANY and explicit ID are allowed");
|
|
RefPtr<MediaInputPort> port = new MediaInputPort(aStream, aTrackID, this,
|
|
aInputNumber, aOutputNumber);
|
|
port->SetGraphImpl(GraphImpl());
|
|
GraphImpl()->AppendMessage(new Message(port));
|
|
return port.forget();
|
|
}
|
|
|
|
void
|
|
ProcessedMediaStream::Finish()
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
explicit Message(ProcessedMediaStream* aStream)
|
|
: ControlMessage(aStream) {}
|
|
void Run() override
|
|
{
|
|
mStream->GraphImpl()->FinishStream(mStream);
|
|
}
|
|
};
|
|
GraphImpl()->AppendMessage(new Message(this));
|
|
}
|
|
|
|
void
|
|
ProcessedMediaStream::SetAutofinish(bool aAutofinish)
|
|
{
|
|
class Message : public ControlMessage {
|
|
public:
|
|
Message(ProcessedMediaStream* aStream, bool aAutofinish)
|
|
: ControlMessage(aStream), mAutofinish(aAutofinish) {}
|
|
void Run() override
|
|
{
|
|
static_cast<ProcessedMediaStream*>(mStream)->SetAutofinishImpl(mAutofinish);
|
|
}
|
|
bool mAutofinish;
|
|
};
|
|
GraphImpl()->AppendMessage(new Message(this, aAutofinish));
|
|
}
|
|
|
|
void
|
|
ProcessedMediaStream::DestroyImpl()
|
|
{
|
|
for (int32_t i = mInputs.Length() - 1; i >= 0; --i) {
|
|
mInputs[i]->Disconnect();
|
|
}
|
|
MediaStream::DestroyImpl();
|
|
// The stream order is only important if there are connections, in which
|
|
// case MediaInputPort::Disconnect() called SetStreamOrderDirty().
|
|
// MediaStreamGraphImpl::RemoveStreamGraphThread() will also call
|
|
// SetStreamOrderDirty(), for other reasons.
|
|
}
|
|
|
|
MediaStreamGraphImpl::MediaStreamGraphImpl(GraphDriverType aDriverRequested,
|
|
TrackRate aSampleRate,
|
|
dom::AudioChannel aChannel)
|
|
: MediaStreamGraph(aSampleRate)
|
|
, mPortCount(0)
|
|
, mInputWanted(false)
|
|
, mInputDeviceID(nullptr)
|
|
, mOutputWanted(true)
|
|
, mOutputDeviceID(nullptr)
|
|
, mNeedAnotherIteration(false)
|
|
, mGraphDriverAsleep(false)
|
|
, mMonitor("MediaStreamGraphImpl")
|
|
, mLifecycleState(LIFECYCLE_THREAD_NOT_STARTED)
|
|
, mEndTime(GRAPH_TIME_MAX)
|
|
, mForceShutDown(false)
|
|
, mPostedRunInStableStateEvent(false)
|
|
, mDetectedNotRunning(false)
|
|
, mPostedRunInStableState(false)
|
|
, mRealtime(aDriverRequested != OFFLINE_THREAD_DRIVER)
|
|
, mNonRealtimeProcessing(false)
|
|
, mStreamOrderDirty(false)
|
|
, mLatencyLog(AsyncLatencyLogger::Get())
|
|
#ifdef MOZ_WEBRTC
|
|
, mFarendObserverRef(nullptr)
|
|
#endif
|
|
, mMemoryReportMonitor("MSGIMemory")
|
|
, mSelfRef(this)
|
|
, mAudioStreamSizes()
|
|
, mNeedsMemoryReport(false)
|
|
#ifdef DEBUG
|
|
, mCanRunMessagesSynchronously(false)
|
|
#endif
|
|
, mAudioChannel(aChannel)
|
|
{
|
|
if (mRealtime) {
|
|
if (aDriverRequested == AUDIO_THREAD_DRIVER) {
|
|
AudioCallbackDriver* driver = new AudioCallbackDriver(this);
|
|
mDriver = driver;
|
|
} else {
|
|
mDriver = new SystemClockDriver(this);
|
|
}
|
|
} else {
|
|
mDriver = new OfflineClockDriver(this, MEDIA_GRAPH_TARGET_PERIOD_MS);
|
|
}
|
|
|
|
mLastMainThreadUpdate = TimeStamp::Now();
|
|
|
|
RegisterWeakMemoryReporter(this);
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::Destroy()
|
|
{
|
|
// First unregister from memory reporting.
|
|
UnregisterWeakMemoryReporter(this);
|
|
|
|
// Clear the self reference which will destroy this instance.
|
|
mSelfRef = nullptr;
|
|
}
|
|
|
|
MediaStreamGraph*
|
|
MediaStreamGraph::GetInstance(MediaStreamGraph::GraphDriverType aGraphDriverRequested,
|
|
dom::AudioChannel aChannel)
|
|
{
|
|
NS_ASSERTION(NS_IsMainThread(), "Main thread only");
|
|
|
|
uint32_t channel = static_cast<uint32_t>(aChannel);
|
|
MediaStreamGraphImpl* graph = nullptr;
|
|
|
|
if (!gGraphs.Get(channel, &graph)) {
|
|
if (!gMediaStreamGraphShutdownBlocker) {
|
|
|
|
class Blocker : public media::ShutdownBlocker
|
|
{
|
|
public:
|
|
Blocker()
|
|
: media::ShutdownBlocker(NS_LITERAL_STRING(
|
|
"MediaStreamGraph shutdown: blocking on msg thread")) {}
|
|
|
|
NS_IMETHOD
|
|
BlockShutdown(nsIAsyncShutdownClient* aProfileBeforeChange) override
|
|
{
|
|
// Distribute the global async shutdown blocker in a ticket. If there
|
|
// are zero graphs then shutdown is unblocked when we go out of scope.
|
|
RefPtr<MediaStreamGraphImpl::ShutdownTicket> ticket =
|
|
new MediaStreamGraphImpl::ShutdownTicket(gMediaStreamGraphShutdownBlocker.get());
|
|
gMediaStreamGraphShutdownBlocker = nullptr;
|
|
|
|
for (auto iter = gGraphs.Iter(); !iter.Done(); iter.Next()) {
|
|
iter.UserData()->ForceShutDown(ticket);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
gMediaStreamGraphShutdownBlocker = new Blocker();
|
|
nsCOMPtr<nsIAsyncShutdownClient> barrier = MediaStreamGraphImpl::GetShutdownBarrier();
|
|
nsresult rv = barrier->
|
|
AddBlocker(gMediaStreamGraphShutdownBlocker,
|
|
NS_LITERAL_STRING(__FILE__), __LINE__,
|
|
NS_LITERAL_STRING("MediaStreamGraph shutdown"));
|
|
MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv));
|
|
}
|
|
|
|
CubebUtils::InitPreferredSampleRate();
|
|
|
|
graph = new MediaStreamGraphImpl(aGraphDriverRequested,
|
|
CubebUtils::PreferredSampleRate(),
|
|
aChannel);
|
|
|
|
gGraphs.Put(channel, graph);
|
|
|
|
STREAM_LOG(LogLevel::Debug,
|
|
("Starting up MediaStreamGraph %p for channel %s",
|
|
graph, AudioChannelValues::strings[channel].value));
|
|
}
|
|
|
|
return graph;
|
|
}
|
|
|
|
MediaStreamGraph*
|
|
MediaStreamGraph::CreateNonRealtimeInstance(TrackRate aSampleRate)
|
|
{
|
|
NS_ASSERTION(NS_IsMainThread(), "Main thread only");
|
|
|
|
MediaStreamGraphImpl* graph =
|
|
new MediaStreamGraphImpl(OFFLINE_THREAD_DRIVER,
|
|
aSampleRate,
|
|
AudioChannel::Normal);
|
|
|
|
STREAM_LOG(LogLevel::Debug, ("Starting up Offline MediaStreamGraph %p", graph));
|
|
|
|
return graph;
|
|
}
|
|
|
|
void
|
|
MediaStreamGraph::DestroyNonRealtimeInstance(MediaStreamGraph* aGraph)
|
|
{
|
|
NS_ASSERTION(NS_IsMainThread(), "Main thread only");
|
|
MOZ_ASSERT(aGraph->IsNonRealtime(), "Should not destroy the global graph here");
|
|
|
|
MediaStreamGraphImpl* graph = static_cast<MediaStreamGraphImpl*>(aGraph);
|
|
if (graph->mForceShutDown)
|
|
return; // already done
|
|
|
|
if (!graph->mNonRealtimeProcessing) {
|
|
// Start the graph, but don't produce anything
|
|
graph->StartNonRealtimeProcessing(0);
|
|
}
|
|
graph->ForceShutDown(nullptr);
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(MediaStreamGraphImpl, nsIMemoryReporter)
|
|
|
|
struct ArrayClearer
|
|
{
|
|
explicit ArrayClearer(nsTArray<AudioNodeSizes>& aArray) : mArray(aArray) {}
|
|
~ArrayClearer() { mArray.Clear(); }
|
|
nsTArray<AudioNodeSizes>& mArray;
|
|
};
|
|
|
|
NS_IMETHODIMP
|
|
MediaStreamGraphImpl::CollectReports(nsIHandleReportCallback* aHandleReport,
|
|
nsISupports* aData, bool aAnonymize)
|
|
{
|
|
// Clears out the report array after we're done with it.
|
|
ArrayClearer reportCleanup(mAudioStreamSizes);
|
|
|
|
{
|
|
MonitorAutoLock memoryReportLock(mMemoryReportMonitor);
|
|
mNeedsMemoryReport = true;
|
|
|
|
{
|
|
// Wake up the MSG thread if it's real time (Offline graphs can't be
|
|
// sleeping).
|
|
MonitorAutoLock monitorLock(mMonitor);
|
|
if (!CurrentDriver()->AsOfflineClockDriver()) {
|
|
CurrentDriver()->WakeUp();
|
|
}
|
|
}
|
|
|
|
if (mLifecycleState >= LIFECYCLE_WAITING_FOR_THREAD_SHUTDOWN) {
|
|
// Shutting down, nothing to report.
|
|
return NS_OK;
|
|
}
|
|
|
|
// Wait for up to one second for the report to complete.
|
|
nsresult rv;
|
|
const PRIntervalTime kMaxWait = PR_SecondsToInterval(1);
|
|
while ((rv = memoryReportLock.Wait(kMaxWait)) != NS_OK) {
|
|
if (PR_GetError() != PR_PENDING_INTERRUPT_ERROR) {
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
|
|
#define REPORT(_path, _amount, _desc) \
|
|
do { \
|
|
nsresult rv; \
|
|
rv = aHandleReport->Callback(EmptyCString(), _path, \
|
|
KIND_HEAP, UNITS_BYTES, _amount, \
|
|
NS_LITERAL_CSTRING(_desc), aData); \
|
|
NS_ENSURE_SUCCESS(rv, rv); \
|
|
} while (0)
|
|
|
|
for (size_t i = 0; i < mAudioStreamSizes.Length(); i++) {
|
|
const AudioNodeSizes& usage = mAudioStreamSizes[i];
|
|
const char* const nodeType = usage.mNodeType.IsEmpty() ?
|
|
"<unknown>" : usage.mNodeType.get();
|
|
|
|
nsPrintfCString domNodePath("explicit/webaudio/audio-node/%s/dom-nodes",
|
|
nodeType);
|
|
REPORT(domNodePath, usage.mDomNode,
|
|
"Memory used by AudioNode DOM objects (Web Audio).");
|
|
|
|
nsPrintfCString enginePath("explicit/webaudio/audio-node/%s/engine-objects",
|
|
nodeType);
|
|
REPORT(enginePath, usage.mEngine,
|
|
"Memory used by AudioNode engine objects (Web Audio).");
|
|
|
|
nsPrintfCString streamPath("explicit/webaudio/audio-node/%s/stream-objects",
|
|
nodeType);
|
|
REPORT(streamPath, usage.mStream,
|
|
"Memory used by AudioNode stream objects (Web Audio).");
|
|
|
|
}
|
|
|
|
size_t hrtfLoaders = WebCore::HRTFDatabaseLoader::sizeOfLoaders(MallocSizeOf);
|
|
if (hrtfLoaders) {
|
|
|
|
REPORT(NS_LITERAL_CSTRING(
|
|
"explicit/webaudio/audio-node/PannerNode/hrtf-databases"),
|
|
hrtfLoaders,
|
|
"Memory used by PannerNode databases (Web Audio).");
|
|
}
|
|
|
|
#undef REPORT
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
SourceMediaStream*
|
|
MediaStreamGraph::CreateSourceStream(DOMMediaStream* aWrapper)
|
|
{
|
|
SourceMediaStream* stream = new SourceMediaStream(aWrapper);
|
|
AddStream(stream);
|
|
return stream;
|
|
}
|
|
|
|
ProcessedMediaStream*
|
|
MediaStreamGraph::CreateTrackUnionStream(DOMMediaStream* aWrapper)
|
|
{
|
|
TrackUnionStream* stream = new TrackUnionStream(aWrapper);
|
|
AddStream(stream);
|
|
return stream;
|
|
}
|
|
|
|
ProcessedMediaStream*
|
|
MediaStreamGraph::CreateAudioCaptureStream(DOMMediaStream* aWrapper,
|
|
TrackID aTrackId)
|
|
{
|
|
AudioCaptureStream* stream = new AudioCaptureStream(aWrapper, aTrackId);
|
|
AddStream(stream);
|
|
return stream;
|
|
}
|
|
|
|
void
|
|
MediaStreamGraph::AddStream(MediaStream* aStream)
|
|
{
|
|
NS_ADDREF(aStream);
|
|
MediaStreamGraphImpl* graph = static_cast<MediaStreamGraphImpl*>(this);
|
|
aStream->SetGraphImpl(graph);
|
|
graph->AppendMessage(new CreateMessage(aStream));
|
|
}
|
|
|
|
class GraphStartedRunnable final : public nsRunnable
|
|
{
|
|
public:
|
|
GraphStartedRunnable(AudioNodeStream* aStream, MediaStreamGraph* aGraph)
|
|
: mStream(aStream)
|
|
, mGraph(aGraph)
|
|
{ }
|
|
|
|
NS_IMETHOD Run() {
|
|
mGraph->NotifyWhenGraphStarted(mStream);
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
RefPtr<AudioNodeStream> mStream;
|
|
MediaStreamGraph* mGraph;
|
|
};
|
|
|
|
void
|
|
MediaStreamGraph::NotifyWhenGraphStarted(AudioNodeStream* aStream)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
class GraphStartedNotificationControlMessage : public ControlMessage
|
|
{
|
|
public:
|
|
explicit GraphStartedNotificationControlMessage(AudioNodeStream* aStream)
|
|
: ControlMessage(aStream)
|
|
{
|
|
}
|
|
void Run() override
|
|
{
|
|
// This runs on the graph thread, so when this runs, and the current
|
|
// driver is an AudioCallbackDriver, we know the audio hardware is
|
|
// started. If not, we are going to switch soon, keep reposting this
|
|
// ControlMessage.
|
|
MediaStreamGraphImpl* graphImpl = mStream->GraphImpl();
|
|
if (graphImpl->CurrentDriver()->AsAudioCallbackDriver()) {
|
|
nsCOMPtr<nsIRunnable> event = new dom::StateChangeTask(
|
|
mStream->AsAudioNodeStream(), nullptr, AudioContextState::Running);
|
|
NS_DispatchToMainThread(event.forget());
|
|
} else {
|
|
nsCOMPtr<nsIRunnable> event = new GraphStartedRunnable(
|
|
mStream->AsAudioNodeStream(), mStream->Graph());
|
|
NS_DispatchToMainThread(event.forget());
|
|
}
|
|
}
|
|
void RunDuringShutdown() override
|
|
{
|
|
}
|
|
};
|
|
|
|
if (!aStream->IsDestroyed()) {
|
|
MediaStreamGraphImpl* graphImpl = static_cast<MediaStreamGraphImpl*>(this);
|
|
graphImpl->AppendMessage(new GraphStartedNotificationControlMessage(aStream));
|
|
}
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::IncrementSuspendCount(MediaStream* aStream)
|
|
{
|
|
if (!aStream->IsSuspended()) {
|
|
MOZ_ASSERT(mStreams.Contains(aStream));
|
|
mStreams.RemoveElement(aStream);
|
|
mSuspendedStreams.AppendElement(aStream);
|
|
SetStreamOrderDirty();
|
|
}
|
|
aStream->IncrementSuspendCount();
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::DecrementSuspendCount(MediaStream* aStream)
|
|
{
|
|
bool wasSuspended = aStream->IsSuspended();
|
|
aStream->DecrementSuspendCount();
|
|
if (wasSuspended && !aStream->IsSuspended()) {
|
|
MOZ_ASSERT(mSuspendedStreams.Contains(aStream));
|
|
mSuspendedStreams.RemoveElement(aStream);
|
|
mStreams.AppendElement(aStream);
|
|
ProcessedMediaStream* ps = aStream->AsProcessedStream();
|
|
if (ps) {
|
|
ps->mCycleMarker = NOT_VISITED;
|
|
}
|
|
SetStreamOrderDirty();
|
|
}
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::SuspendOrResumeStreams(AudioContextOperation aAudioContextOperation,
|
|
const nsTArray<MediaStream*>& aStreamSet)
|
|
{
|
|
// For our purpose, Suspend and Close are equivalent: we want to remove the
|
|
// streams from the set of streams that are going to be processed.
|
|
for (MediaStream* stream : aStreamSet) {
|
|
if (aAudioContextOperation == AudioContextOperation::Resume) {
|
|
DecrementSuspendCount(stream);
|
|
} else {
|
|
IncrementSuspendCount(stream);
|
|
}
|
|
}
|
|
STREAM_LOG(LogLevel::Debug, ("Moving streams between suspended and running"
|
|
"state: mStreams: %d, mSuspendedStreams: %d\n", mStreams.Length(),
|
|
mSuspendedStreams.Length()));
|
|
#ifdef DEBUG
|
|
// The intersection of the two arrays should be null.
|
|
for (uint32_t i = 0; i < mStreams.Length(); i++) {
|
|
for (uint32_t j = 0; j < mSuspendedStreams.Length(); j++) {
|
|
MOZ_ASSERT(
|
|
mStreams[i] != mSuspendedStreams[j],
|
|
"The suspended stream set and running stream set are not disjoint.");
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::AudioContextOperationCompleted(MediaStream* aStream,
|
|
void* aPromise,
|
|
AudioContextOperation aOperation)
|
|
{
|
|
// This can be called from the thread created to do cubeb operation, or the
|
|
// MSG thread. The pointers passed back here are refcounted, so are still
|
|
// alive.
|
|
MonitorAutoLock lock(mMonitor);
|
|
|
|
AudioContextState state;
|
|
switch (aOperation) {
|
|
case AudioContextOperation::Suspend:
|
|
state = AudioContextState::Suspended;
|
|
break;
|
|
case AudioContextOperation::Resume:
|
|
state = AudioContextState::Running;
|
|
break;
|
|
case AudioContextOperation::Close:
|
|
state = AudioContextState::Closed;
|
|
break;
|
|
default: MOZ_CRASH("Not handled.");
|
|
}
|
|
|
|
nsCOMPtr<nsIRunnable> event = new dom::StateChangeTask(
|
|
aStream->AsAudioNodeStream(), aPromise, state);
|
|
NS_DispatchToMainThread(event.forget());
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::ApplyAudioContextOperationImpl(
|
|
MediaStream* aDestinationStream, const nsTArray<MediaStream*>& aStreams,
|
|
AudioContextOperation aOperation, void* aPromise)
|
|
{
|
|
MOZ_ASSERT(CurrentDriver()->OnThread());
|
|
|
|
SuspendOrResumeStreams(aOperation, aStreams);
|
|
|
|
bool switching = false;
|
|
GraphDriver* nextDriver = nullptr;
|
|
{
|
|
MonitorAutoLock lock(mMonitor);
|
|
switching = CurrentDriver()->Switching();
|
|
if (switching) {
|
|
nextDriver = CurrentDriver()->NextDriver();
|
|
}
|
|
}
|
|
|
|
// If we have suspended the last AudioContext, and we don't have other
|
|
// streams that have audio, this graph will automatically switch to a
|
|
// SystemCallbackDriver, because it can't find a MediaStream that has an audio
|
|
// track. When resuming, force switching to an AudioCallbackDriver (if we're
|
|
// not already switching). It would have happened at the next iteration
|
|
// anyways, but doing this now save some time.
|
|
if (aOperation == AudioContextOperation::Resume) {
|
|
if (!CurrentDriver()->AsAudioCallbackDriver()) {
|
|
AudioCallbackDriver* driver;
|
|
if (switching) {
|
|
MOZ_ASSERT(nextDriver->AsAudioCallbackDriver());
|
|
driver = nextDriver->AsAudioCallbackDriver();
|
|
} else {
|
|
driver = new AudioCallbackDriver(this);
|
|
MonitorAutoLock lock(mMonitor);
|
|
CurrentDriver()->SwitchAtNextIteration(driver);
|
|
}
|
|
driver->EnqueueStreamAndPromiseForOperation(aDestinationStream,
|
|
aPromise, aOperation);
|
|
} else {
|
|
// We are resuming a context, but we are already using an
|
|
// AudioCallbackDriver, we can resolve the promise now.
|
|
AudioContextOperationCompleted(aDestinationStream, aPromise, aOperation);
|
|
}
|
|
}
|
|
// Close, suspend: check if we are going to switch to a
|
|
// SystemAudioCallbackDriver, and pass the promise to the AudioCallbackDriver
|
|
// if that's the case, so it can notify the content.
|
|
// This is the same logic as in UpdateStreamOrder, but it's simpler to have it
|
|
// here as well so we don't have to store the Promise(s) on the Graph.
|
|
if (aOperation != AudioContextOperation::Resume) {
|
|
bool audioTrackPresent = false;
|
|
for (uint32_t i = 0; i < mStreams.Length(); ++i) {
|
|
MediaStream* stream = mStreams[i];
|
|
if (stream->AsAudioNodeStream()) {
|
|
audioTrackPresent = true;
|
|
}
|
|
for (StreamBuffer::TrackIter tracks(stream->GetStreamBuffer(), MediaSegment::AUDIO);
|
|
!tracks.IsEnded(); tracks.Next()) {
|
|
audioTrackPresent = true;
|
|
}
|
|
}
|
|
if (!audioTrackPresent && CurrentDriver()->AsAudioCallbackDriver()) {
|
|
CurrentDriver()->AsAudioCallbackDriver()->
|
|
EnqueueStreamAndPromiseForOperation(aDestinationStream, aPromise,
|
|
aOperation);
|
|
|
|
SystemClockDriver* driver;
|
|
if (nextDriver) {
|
|
MOZ_ASSERT(!nextDriver->AsAudioCallbackDriver());
|
|
} else {
|
|
driver = new SystemClockDriver(this);
|
|
MonitorAutoLock lock(mMonitor);
|
|
CurrentDriver()->SwitchAtNextIteration(driver);
|
|
}
|
|
// We are closing or suspending an AudioContext, but we just got resumed.
|
|
// Queue the operation on the next driver so that the ordering is
|
|
// preserved.
|
|
} else if (!audioTrackPresent && switching) {
|
|
MOZ_ASSERT(nextDriver->AsAudioCallbackDriver());
|
|
nextDriver->AsAudioCallbackDriver()->
|
|
EnqueueStreamAndPromiseForOperation(aDestinationStream, aPromise,
|
|
aOperation);
|
|
} else {
|
|
// We are closing or suspending an AudioContext, but something else is
|
|
// using the audio stream, we can resolve the promise now.
|
|
AudioContextOperationCompleted(aDestinationStream, aPromise, aOperation);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
MediaStreamGraph::ApplyAudioContextOperation(MediaStream* aDestinationStream,
|
|
const nsTArray<MediaStream*>& aStreams,
|
|
AudioContextOperation aOperation,
|
|
void* aPromise)
|
|
{
|
|
class AudioContextOperationControlMessage : public ControlMessage
|
|
{
|
|
public:
|
|
AudioContextOperationControlMessage(MediaStream* aDestinationStream,
|
|
const nsTArray<MediaStream*>& aStreams,
|
|
AudioContextOperation aOperation,
|
|
void* aPromise)
|
|
: ControlMessage(aDestinationStream)
|
|
, mStreams(aStreams)
|
|
, mAudioContextOperation(aOperation)
|
|
, mPromise(aPromise)
|
|
{
|
|
}
|
|
void Run() override
|
|
{
|
|
mStream->GraphImpl()->ApplyAudioContextOperationImpl(mStream,
|
|
mStreams, mAudioContextOperation, mPromise);
|
|
}
|
|
void RunDuringShutdown() override
|
|
{
|
|
MOZ_ASSERT(false, "We should be reviving the graph?");
|
|
}
|
|
|
|
private:
|
|
// We don't need strong references here for the same reason ControlMessage
|
|
// doesn't.
|
|
nsTArray<MediaStream*> mStreams;
|
|
AudioContextOperation mAudioContextOperation;
|
|
void* mPromise;
|
|
};
|
|
|
|
MediaStreamGraphImpl* graphImpl = static_cast<MediaStreamGraphImpl*>(this);
|
|
graphImpl->AppendMessage(
|
|
new AudioContextOperationControlMessage(aDestinationStream, aStreams,
|
|
aOperation, aPromise));
|
|
}
|
|
|
|
bool
|
|
MediaStreamGraph::IsNonRealtime() const
|
|
{
|
|
const MediaStreamGraphImpl* impl = static_cast<const MediaStreamGraphImpl*>(this);
|
|
MediaStreamGraphImpl* graph;
|
|
|
|
return !gGraphs.Get(uint32_t(impl->AudioChannel()), &graph) || graph != impl;
|
|
}
|
|
|
|
void
|
|
MediaStreamGraph::StartNonRealtimeProcessing(uint32_t aTicksToProcess)
|
|
{
|
|
NS_ASSERTION(NS_IsMainThread(), "main thread only");
|
|
|
|
MediaStreamGraphImpl* graph = static_cast<MediaStreamGraphImpl*>(this);
|
|
NS_ASSERTION(!graph->mRealtime, "non-realtime only");
|
|
|
|
if (graph->mNonRealtimeProcessing)
|
|
return;
|
|
|
|
graph->mEndTime =
|
|
graph->RoundUpToNextAudioBlock(graph->mStateComputedTime +
|
|
aTicksToProcess - 1);
|
|
graph->mNonRealtimeProcessing = true;
|
|
graph->EnsureRunInStableState();
|
|
}
|
|
|
|
void
|
|
ProcessedMediaStream::AddInput(MediaInputPort* aPort)
|
|
{
|
|
mInputs.AppendElement(aPort);
|
|
GraphImpl()->SetStreamOrderDirty();
|
|
}
|
|
|
|
void
|
|
MediaStreamGraph::RegisterCaptureStreamForWindow(
|
|
uint64_t aWindowId, ProcessedMediaStream* aCaptureStream)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MediaStreamGraphImpl* graphImpl = static_cast<MediaStreamGraphImpl*>(this);
|
|
graphImpl->RegisterCaptureStreamForWindow(aWindowId, aCaptureStream);
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::RegisterCaptureStreamForWindow(
|
|
uint64_t aWindowId, ProcessedMediaStream* aCaptureStream)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
WindowAndStream winAndStream;
|
|
winAndStream.mWindowId = aWindowId;
|
|
winAndStream.mCaptureStreamSink = aCaptureStream;
|
|
mWindowCaptureStreams.AppendElement(winAndStream);
|
|
}
|
|
|
|
void
|
|
MediaStreamGraph::UnregisterCaptureStreamForWindow(uint64_t aWindowId)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MediaStreamGraphImpl* graphImpl = static_cast<MediaStreamGraphImpl*>(this);
|
|
graphImpl->UnregisterCaptureStreamForWindow(aWindowId);
|
|
}
|
|
|
|
void
|
|
MediaStreamGraphImpl::UnregisterCaptureStreamForWindow(uint64_t aWindowId)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
for (uint32_t i = 0; i < mWindowCaptureStreams.Length(); i++) {
|
|
if (mWindowCaptureStreams[i].mWindowId == aWindowId) {
|
|
mWindowCaptureStreams.RemoveElementAt(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
already_AddRefed<MediaInputPort>
|
|
MediaStreamGraph::ConnectToCaptureStream(uint64_t aWindowId,
|
|
MediaStream* aMediaStream)
|
|
{
|
|
return aMediaStream->GraphImpl()->ConnectToCaptureStream(aWindowId,
|
|
aMediaStream);
|
|
}
|
|
|
|
already_AddRefed<MediaInputPort>
|
|
MediaStreamGraphImpl::ConnectToCaptureStream(uint64_t aWindowId,
|
|
MediaStream* aMediaStream)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
for (uint32_t i = 0; i < mWindowCaptureStreams.Length(); i++) {
|
|
if (mWindowCaptureStreams[i].mWindowId == aWindowId) {
|
|
ProcessedMediaStream* sink = mWindowCaptureStreams[i].mCaptureStreamSink;
|
|
return sink->AllocateInputPort(aMediaStream);
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
} // namespace mozilla
|