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-rw-r--r--dom/media/encoder/MediaEncoder.cpp1142
1 files changed, 1142 insertions, 0 deletions
diff --git a/dom/media/encoder/MediaEncoder.cpp b/dom/media/encoder/MediaEncoder.cpp
new file mode 100644
index 0000000000..4eca742c77
--- /dev/null
+++ b/dom/media/encoder/MediaEncoder.cpp
@@ -0,0 +1,1142 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "MediaEncoder.h"
+
+#include <algorithm>
+#include "AudioNodeEngine.h"
+#include "AudioNodeTrack.h"
+#include "DriftCompensation.h"
+#include "MediaDecoder.h"
+#include "MediaTrackGraphImpl.h"
+#include "MediaTrackListener.h"
+#include "mozilla/dom/AudioNode.h"
+#include "mozilla/dom/AudioStreamTrack.h"
+#include "mozilla/dom/Blob.h"
+#include "mozilla/dom/BlobImpl.h"
+#include "mozilla/dom/MediaStreamTrack.h"
+#include "mozilla/dom/MutableBlobStorage.h"
+#include "mozilla/dom/VideoStreamTrack.h"
+#include "mozilla/gfx/Point.h" // IntSize
+#include "mozilla/Logging.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/ProfilerLabels.h"
+#include "mozilla/StaticPrefs_media.h"
+#include "mozilla/StaticPtr.h"
+#include "mozilla/TaskQueue.h"
+#include "mozilla/Unused.h"
+#include "Muxer.h"
+#include "nsMimeTypes.h"
+#include "nsThreadUtils.h"
+#include "OggWriter.h"
+#include "OpusTrackEncoder.h"
+#include "TimeUnits.h"
+#include "Tracing.h"
+
+#include "VP8TrackEncoder.h"
+#include "WebMWriter.h"
+
+mozilla::LazyLogModule gMediaEncoderLog("MediaEncoder");
+#define LOG(type, msg) MOZ_LOG(gMediaEncoderLog, type, msg)
+
+namespace mozilla {
+
+using namespace dom;
+using namespace media;
+
+namespace {
+class BlobStorer : public MutableBlobStorageCallback {
+ MozPromiseHolder<MediaEncoder::BlobPromise> mHolder;
+
+ virtual ~BlobStorer() = default;
+
+ public:
+ BlobStorer() = default;
+
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(BlobStorer, override)
+
+ void BlobStoreCompleted(MutableBlobStorage*, BlobImpl* aBlobImpl,
+ nsresult aRv) override {
+ MOZ_ASSERT(NS_IsMainThread());
+ if (NS_FAILED(aRv)) {
+ mHolder.Reject(aRv, __func__);
+ return;
+ }
+
+ mHolder.Resolve(aBlobImpl, __func__);
+ }
+
+ RefPtr<MediaEncoder::BlobPromise> Promise() {
+ return mHolder.Ensure(__func__);
+ }
+};
+} // namespace
+
+class MediaEncoder::AudioTrackListener : public DirectMediaTrackListener {
+ public:
+ AudioTrackListener(RefPtr<DriftCompensator> aDriftCompensator,
+ RefPtr<MediaEncoder> aMediaEncoder)
+ : mDirectConnected(false),
+ mInitialized(false),
+ mRemoved(false),
+ mDriftCompensator(std::move(aDriftCompensator)),
+ mMediaEncoder(std::move(aMediaEncoder)),
+ mEncoderThread(mMediaEncoder->mEncoderThread),
+ mShutdownPromise(mShutdownHolder.Ensure(__func__)) {
+ MOZ_ASSERT(mMediaEncoder);
+ MOZ_ASSERT(mMediaEncoder->mAudioEncoder);
+ MOZ_ASSERT(mEncoderThread);
+ }
+
+ void NotifyDirectListenerInstalled(InstallationResult aResult) override {
+ if (aResult == InstallationResult::SUCCESS) {
+ LOG(LogLevel::Info, ("Audio track direct listener installed"));
+ mDirectConnected = true;
+ } else {
+ LOG(LogLevel::Info, ("Audio track failed to install direct listener"));
+ MOZ_ASSERT(!mDirectConnected);
+ }
+ }
+
+ void NotifyDirectListenerUninstalled() override {
+ mDirectConnected = false;
+
+ if (mRemoved) {
+ mMediaEncoder = nullptr;
+ mEncoderThread = nullptr;
+ }
+ }
+
+ void NotifyQueuedChanges(MediaTrackGraph* aGraph, TrackTime aTrackOffset,
+ const MediaSegment& aQueuedMedia) override {
+ TRACE_COMMENT("MediaEncoder::NotifyQueuedChanges", "%p",
+ mMediaEncoder.get());
+ MOZ_ASSERT(mMediaEncoder);
+ MOZ_ASSERT(mEncoderThread);
+
+ if (!mInitialized) {
+ mDriftCompensator->NotifyAudioStart(TimeStamp::Now());
+ mInitialized = true;
+ }
+
+ mDriftCompensator->NotifyAudio(aQueuedMedia.GetDuration());
+
+ const AudioSegment& audio = static_cast<const AudioSegment&>(aQueuedMedia);
+
+ AudioSegment copy;
+ copy.AppendSlice(audio, 0, audio.GetDuration());
+
+ nsresult rv = mEncoderThread->Dispatch(NS_NewRunnableFunction(
+ "mozilla::AudioTrackEncoder::AppendAudioSegment",
+ [encoder = mMediaEncoder, copy = std::move(copy)]() mutable {
+ encoder->mAudioEncoder->AppendAudioSegment(std::move(copy));
+ }));
+ MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
+ Unused << rv;
+ }
+
+ void NotifyEnded(MediaTrackGraph* aGraph) override {
+ MOZ_ASSERT(mMediaEncoder);
+ MOZ_ASSERT(mMediaEncoder->mAudioEncoder);
+ MOZ_ASSERT(mEncoderThread);
+
+ nsresult rv = mEncoderThread->Dispatch(
+ NS_NewRunnableFunction("mozilla::AudioTrackEncoder::NotifyEndOfStream",
+ [encoder = mMediaEncoder] {
+ encoder->mAudioEncoder->NotifyEndOfStream();
+ }));
+ MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
+ Unused << rv;
+ }
+
+ void NotifyRemoved(MediaTrackGraph* aGraph) override {
+ nsresult rv = mEncoderThread->Dispatch(
+ NS_NewRunnableFunction("mozilla::AudioTrackEncoder::NotifyEndOfStream",
+ [encoder = mMediaEncoder] {
+ encoder->mAudioEncoder->NotifyEndOfStream();
+ }));
+ MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
+ Unused << rv;
+
+ mRemoved = true;
+
+ if (!mDirectConnected) {
+ mMediaEncoder = nullptr;
+ mEncoderThread = nullptr;
+ }
+
+ mShutdownHolder.Resolve(true, __func__);
+ }
+
+ const RefPtr<GenericNonExclusivePromise>& OnShutdown() const {
+ return mShutdownPromise;
+ }
+
+ private:
+ bool mDirectConnected;
+ bool mInitialized;
+ bool mRemoved;
+ const RefPtr<DriftCompensator> mDriftCompensator;
+ RefPtr<MediaEncoder> mMediaEncoder;
+ RefPtr<TaskQueue> mEncoderThread;
+ MozPromiseHolder<GenericNonExclusivePromise> mShutdownHolder;
+ const RefPtr<GenericNonExclusivePromise> mShutdownPromise;
+};
+
+class MediaEncoder::VideoTrackListener : public DirectMediaTrackListener {
+ public:
+ explicit VideoTrackListener(RefPtr<MediaEncoder> aMediaEncoder)
+ : mDirectConnected(false),
+ mInitialized(false),
+ mRemoved(false),
+ mPendingAdvanceCurrentTime(false),
+ mMediaEncoder(std::move(aMediaEncoder)),
+ mEncoderThread(mMediaEncoder->mEncoderThread),
+ mShutdownPromise(mShutdownHolder.Ensure(__func__)) {
+ MOZ_ASSERT(mMediaEncoder);
+ MOZ_ASSERT(mEncoderThread);
+ }
+
+ void NotifyDirectListenerInstalled(InstallationResult aResult) override {
+ if (aResult == InstallationResult::SUCCESS) {
+ LOG(LogLevel::Info, ("Video track direct listener installed"));
+ mDirectConnected = true;
+ } else {
+ LOG(LogLevel::Info, ("Video track failed to install direct listener"));
+ MOZ_ASSERT(!mDirectConnected);
+ return;
+ }
+ }
+
+ void NotifyDirectListenerUninstalled() override {
+ mDirectConnected = false;
+
+ if (mRemoved) {
+ mMediaEncoder = nullptr;
+ mEncoderThread = nullptr;
+ }
+ }
+
+ void NotifyQueuedChanges(MediaTrackGraph* aGraph, TrackTime aTrackOffset,
+ const MediaSegment& aQueuedMedia) override {
+ TRACE_COMMENT("MediaEncoder::NotifyQueuedChanges", "%p",
+ mMediaEncoder.get());
+ MOZ_ASSERT(mMediaEncoder);
+ MOZ_ASSERT(mMediaEncoder->mVideoEncoder);
+ MOZ_ASSERT(mEncoderThread);
+
+ mCurrentTime = TimeStamp::Now();
+ if (!mInitialized) {
+ nsresult rv = mEncoderThread->Dispatch(
+ NS_NewRunnableFunction("mozilla::VideoTrackEncoder::SetStartOffset",
+ [encoder = mMediaEncoder, now = mCurrentTime] {
+ encoder->mVideoEncoder->SetStartOffset(now);
+ }));
+ MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
+ Unused << rv;
+ mInitialized = true;
+ }
+
+ if (!mPendingAdvanceCurrentTime) {
+ mPendingAdvanceCurrentTime = true;
+ nsresult rv = mEncoderThread->Dispatch(NS_NewRunnableFunction(
+ "mozilla::VideoTrackEncoder::AdvanceCurrentTime",
+ [encoder = mMediaEncoder, now = mCurrentTime] {
+ encoder->mVideoListener->mPendingAdvanceCurrentTime = false;
+ encoder->mVideoEncoder->AdvanceCurrentTime(now);
+ }));
+ MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
+ Unused << rv;
+ }
+ }
+
+ void NotifyRealtimeTrackData(MediaTrackGraph* aGraph, TrackTime aTrackOffset,
+ const MediaSegment& aMedia) override {
+ TRACE_COMMENT("MediaEncoder::NotifyRealtimeTrackData", "%p",
+ mMediaEncoder.get());
+ MOZ_ASSERT(mMediaEncoder);
+ MOZ_ASSERT(mMediaEncoder->mVideoEncoder);
+ MOZ_ASSERT(mEncoderThread);
+ MOZ_ASSERT(aMedia.GetType() == MediaSegment::VIDEO);
+
+ const VideoSegment& video = static_cast<const VideoSegment&>(aMedia);
+ VideoSegment copy;
+ for (VideoSegment::ConstChunkIterator iter(video); !iter.IsEnded();
+ iter.Next()) {
+ copy.AppendFrame(do_AddRef(iter->mFrame.GetImage()),
+ iter->mFrame.GetIntrinsicSize(),
+ iter->mFrame.GetPrincipalHandle(),
+ iter->mFrame.GetForceBlack(), iter->mTimeStamp);
+ }
+
+ nsresult rv = mEncoderThread->Dispatch(NS_NewRunnableFunction(
+ "mozilla::VideoTrackEncoder::AppendVideoSegment",
+ [encoder = mMediaEncoder, copy = std::move(copy)]() mutable {
+ encoder->mVideoEncoder->AppendVideoSegment(std::move(copy));
+ }));
+ MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
+ Unused << rv;
+ }
+
+ void NotifyEnabledStateChanged(MediaTrackGraph* aGraph,
+ bool aEnabled) override {
+ MOZ_ASSERT(mMediaEncoder);
+ MOZ_ASSERT(mMediaEncoder->mVideoEncoder);
+ MOZ_ASSERT(mEncoderThread);
+
+ nsresult rv;
+ if (aEnabled) {
+ rv = mEncoderThread->Dispatch(NS_NewRunnableFunction(
+ "mozilla::VideoTrackEncoder::Enable",
+ [encoder = mMediaEncoder, now = TimeStamp::Now()] {
+ encoder->mVideoEncoder->Enable(now);
+ }));
+ } else {
+ rv = mEncoderThread->Dispatch(NS_NewRunnableFunction(
+ "mozilla::VideoTrackEncoder::Disable",
+ [encoder = mMediaEncoder, now = TimeStamp::Now()] {
+ encoder->mVideoEncoder->Disable(now);
+ }));
+ }
+ MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
+ Unused << rv;
+ }
+
+ void NotifyEnded(MediaTrackGraph* aGraph) override {
+ MOZ_ASSERT(mMediaEncoder);
+ MOZ_ASSERT(mMediaEncoder->mVideoEncoder);
+ MOZ_ASSERT(mEncoderThread);
+
+ nsresult rv = mEncoderThread->Dispatch(NS_NewRunnableFunction(
+ "mozilla::VideoTrackEncoder::NotifyEndOfStream",
+ [encoder = mMediaEncoder, now = mCurrentTime] {
+ if (!now.IsNull()) {
+ encoder->mVideoEncoder->AdvanceCurrentTime(now);
+ }
+ encoder->mVideoEncoder->NotifyEndOfStream();
+ }));
+ MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
+ Unused << rv;
+ }
+
+ void NotifyRemoved(MediaTrackGraph* aGraph) override {
+ nsresult rv = mEncoderThread->Dispatch(NS_NewRunnableFunction(
+ "mozilla::VideoTrackEncoder::NotifyEndOfStream",
+ [encoder = mMediaEncoder, now = mCurrentTime] {
+ if (!now.IsNull()) {
+ encoder->mVideoEncoder->AdvanceCurrentTime(now);
+ }
+ encoder->mVideoEncoder->NotifyEndOfStream();
+ }));
+ MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
+ Unused << rv;
+
+ mRemoved = true;
+
+ if (!mDirectConnected) {
+ mMediaEncoder = nullptr;
+ mEncoderThread = nullptr;
+ }
+
+ mShutdownHolder.Resolve(true, __func__);
+ }
+
+ const RefPtr<GenericNonExclusivePromise>& OnShutdown() const {
+ return mShutdownPromise;
+ }
+
+ private:
+ bool mDirectConnected;
+ bool mInitialized;
+ bool mRemoved;
+ TimeStamp mCurrentTime;
+ Atomic<bool> mPendingAdvanceCurrentTime;
+ RefPtr<MediaEncoder> mMediaEncoder;
+ RefPtr<TaskQueue> mEncoderThread;
+ MozPromiseHolder<GenericNonExclusivePromise> mShutdownHolder;
+ const RefPtr<GenericNonExclusivePromise> mShutdownPromise;
+};
+
+class MediaEncoder::EncoderListener : public TrackEncoderListener {
+ public:
+ EncoderListener(TaskQueue* aEncoderThread, MediaEncoder* aEncoder)
+ : mEncoderThread(aEncoderThread), mEncoder(aEncoder) {}
+
+ void Forget() {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+ mEncoder = nullptr;
+ }
+
+ void Initialized(TrackEncoder* aTrackEncoder) override {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+ MOZ_ASSERT(aTrackEncoder->IsInitialized());
+
+ if (!mEncoder) {
+ return;
+ }
+
+ mEncoder->UpdateInitialized();
+ }
+
+ void Started(TrackEncoder* aTrackEncoder) override {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+ MOZ_ASSERT(aTrackEncoder->IsStarted());
+
+ if (!mEncoder) {
+ return;
+ }
+
+ mEncoder->UpdateStarted();
+ }
+
+ void Error(TrackEncoder* aTrackEncoder) override {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+
+ if (!mEncoder) {
+ return;
+ }
+
+ mEncoder->SetError();
+ }
+
+ protected:
+ RefPtr<TaskQueue> mEncoderThread;
+ RefPtr<MediaEncoder> mEncoder;
+};
+
+MediaEncoder::MediaEncoder(
+ RefPtr<TaskQueue> aEncoderThread,
+ RefPtr<DriftCompensator> aDriftCompensator,
+ UniquePtr<ContainerWriter> aWriter,
+ UniquePtr<AudioTrackEncoder> aAudioEncoder,
+ UniquePtr<VideoTrackEncoder> aVideoEncoder,
+ UniquePtr<MediaQueue<EncodedFrame>> aEncodedAudioQueue,
+ UniquePtr<MediaQueue<EncodedFrame>> aEncodedVideoQueue,
+ TrackRate aTrackRate, const nsAString& aMimeType, uint64_t aMaxMemory,
+ TimeDuration aTimeslice)
+ : mMainThread(GetMainThreadSerialEventTarget()),
+ mEncoderThread(std::move(aEncoderThread)),
+ mEncodedAudioQueue(std::move(aEncodedAudioQueue)),
+ mEncodedVideoQueue(std::move(aEncodedVideoQueue)),
+ mMuxer(MakeUnique<Muxer>(std::move(aWriter), *mEncodedAudioQueue,
+ *mEncodedVideoQueue)),
+ mAudioEncoder(std::move(aAudioEncoder)),
+ mAudioListener(mAudioEncoder ? MakeAndAddRef<AudioTrackListener>(
+ std::move(aDriftCompensator), this)
+ : nullptr),
+ mVideoEncoder(std::move(aVideoEncoder)),
+ mVideoListener(mVideoEncoder ? MakeAndAddRef<VideoTrackListener>(this)
+ : nullptr),
+ mEncoderListener(MakeAndAddRef<EncoderListener>(mEncoderThread, this)),
+ mMimeType(aMimeType),
+ mMaxMemory(aMaxMemory),
+ mTimeslice(aTimeslice),
+ mStartTime(TimeStamp::Now()),
+ mInitialized(false),
+ mStarted(false),
+ mCompleted(false),
+ mError(false) {
+ if (mAudioEncoder) {
+ mAudioPushListener = mEncodedAudioQueue->PushEvent().Connect(
+ mEncoderThread, this, &MediaEncoder::OnEncodedAudioPushed);
+ mAudioFinishListener = mEncodedAudioQueue->FinishEvent().Connect(
+ mEncoderThread, this, &MediaEncoder::MaybeShutdown);
+ nsresult rv = mEncoderThread->Dispatch(NS_NewRunnableFunction(
+ "mozilla::AudioTrackEncoder::RegisterListener",
+ [self = RefPtr<MediaEncoder>(this), this] {
+ mAudioEncoder->RegisterListener(mEncoderListener);
+ }));
+ MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
+ Unused << rv;
+ } else {
+ mMuxedAudioEndTime = TimeUnit::FromInfinity();
+ mEncodedAudioQueue->Finish();
+ }
+ if (mVideoEncoder) {
+ mVideoPushListener = mEncodedVideoQueue->PushEvent().Connect(
+ mEncoderThread, this, &MediaEncoder::OnEncodedVideoPushed);
+ mVideoFinishListener = mEncodedVideoQueue->FinishEvent().Connect(
+ mEncoderThread, this, &MediaEncoder::MaybeShutdown);
+ nsresult rv = mEncoderThread->Dispatch(NS_NewRunnableFunction(
+ "mozilla::VideoTrackEncoder::RegisterListener",
+ [self = RefPtr<MediaEncoder>(this), this] {
+ mVideoEncoder->RegisterListener(mEncoderListener);
+ }));
+ MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
+ Unused << rv;
+ } else {
+ mMuxedVideoEndTime = TimeUnit::FromInfinity();
+ mEncodedVideoQueue->Finish();
+ }
+}
+
+MediaEncoder::~MediaEncoder() {
+ MOZ_ASSERT(!mAudioTrack);
+ MOZ_ASSERT(!mVideoTrack);
+ MOZ_ASSERT(!mAudioNode);
+ MOZ_ASSERT(!mInputPort);
+ MOZ_ASSERT(!mPipeTrack);
+}
+
+void MediaEncoder::EnsureGraphTrackFrom(MediaTrack* aTrack) {
+ if (mGraphTrack) {
+ return;
+ }
+ MOZ_DIAGNOSTIC_ASSERT(!aTrack->IsDestroyed());
+ mGraphTrack = MakeAndAddRef<SharedDummyTrack>(
+ aTrack->GraphImpl()->CreateSourceTrack(MediaSegment::VIDEO));
+}
+
+void MediaEncoder::RunOnGraph(already_AddRefed<Runnable> aRunnable) {
+ MOZ_ASSERT(mGraphTrack);
+ class Message : public ControlMessage {
+ public:
+ explicit Message(already_AddRefed<Runnable> aRunnable)
+ : ControlMessage(nullptr), mRunnable(aRunnable) {}
+ void Run() override {
+ TRACE("MediaEncoder::RunOnGraph");
+ mRunnable->Run();
+ }
+ const RefPtr<Runnable> mRunnable;
+ };
+ mGraphTrack->mTrack->GraphImpl()->AppendMessage(
+ MakeUnique<Message>(std::move(aRunnable)));
+}
+
+void MediaEncoder::Suspend() {
+ RunOnGraph(NS_NewRunnableFunction(
+ "MediaEncoder::Suspend (graph)",
+ [self = RefPtr<MediaEncoder>(this), this] {
+ if (NS_FAILED(mEncoderThread->Dispatch(
+ NS_NewRunnableFunction("MediaEncoder::Suspend (encoder)",
+ [self, this, now = TimeStamp::Now()] {
+ if (mAudioEncoder) {
+ mAudioEncoder->Suspend();
+ }
+ if (mVideoEncoder) {
+ mVideoEncoder->Suspend(now);
+ }
+ })))) {
+ // RunOnGraph added an extra async step, and now `thread` has shut
+ // down.
+ return;
+ }
+ }));
+}
+
+void MediaEncoder::Resume() {
+ RunOnGraph(NS_NewRunnableFunction(
+ "MediaEncoder::Resume (graph)",
+ [self = RefPtr<MediaEncoder>(this), this] {
+ if (NS_FAILED(mEncoderThread->Dispatch(
+ NS_NewRunnableFunction("MediaEncoder::Resume (encoder)",
+ [self, this, now = TimeStamp::Now()] {
+ if (mAudioEncoder) {
+ mAudioEncoder->Resume();
+ }
+ if (mVideoEncoder) {
+ mVideoEncoder->Resume(now);
+ }
+ })))) {
+ // RunOnGraph added an extra async step, and now `thread` has shut
+ // down.
+ return;
+ }
+ }));
+}
+
+void MediaEncoder::ConnectAudioNode(AudioNode* aNode, uint32_t aOutput) {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ if (mAudioNode) {
+ MOZ_ASSERT(false, "Only one audio node supported");
+ return;
+ }
+
+ // Only AudioNodeTrack of kind EXTERNAL_OUTPUT stores output audio data in
+ // the track (see AudioNodeTrack::AdvanceOutputSegment()). That means
+ // forwarding input track in recorder session won't be able to copy data from
+ // the track of non-destination node. Create a pipe track in this case.
+ if (aNode->NumberOfOutputs() > 0) {
+ AudioContext* ctx = aNode->Context();
+ AudioNodeEngine* engine = new AudioNodeEngine(nullptr);
+ AudioNodeTrack::Flags flags = AudioNodeTrack::EXTERNAL_OUTPUT |
+ AudioNodeTrack::NEED_MAIN_THREAD_ENDED;
+ mPipeTrack = AudioNodeTrack::Create(ctx, engine, flags, ctx->Graph());
+ AudioNodeTrack* ns = aNode->GetTrack();
+ if (ns) {
+ mInputPort = mPipeTrack->AllocateInputPort(aNode->GetTrack(), 0, aOutput);
+ }
+ }
+
+ mAudioNode = aNode;
+
+ if (mPipeTrack) {
+ mPipeTrack->AddListener(mAudioListener);
+ EnsureGraphTrackFrom(mPipeTrack);
+ } else {
+ mAudioNode->GetTrack()->AddListener(mAudioListener);
+ EnsureGraphTrackFrom(mAudioNode->GetTrack());
+ }
+}
+
+void MediaEncoder::ConnectMediaStreamTrack(MediaStreamTrack* aTrack) {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ if (aTrack->Ended()) {
+ MOZ_ASSERT_UNREACHABLE("Cannot connect ended track");
+ return;
+ }
+
+ EnsureGraphTrackFrom(aTrack->GetTrack());
+
+ if (AudioStreamTrack* audio = aTrack->AsAudioStreamTrack()) {
+ if (!mAudioEncoder) {
+ // No audio encoder for this audio track. It could be disabled.
+ LOG(LogLevel::Warning, ("Cannot connect to audio track - no encoder"));
+ return;
+ }
+
+ MOZ_ASSERT(!mAudioTrack, "Only one audio track supported.");
+ MOZ_ASSERT(mAudioListener, "No audio listener for this audio track");
+
+ LOG(LogLevel::Info, ("Connected to audio track %p", aTrack));
+
+ mAudioTrack = audio;
+ audio->AddListener(mAudioListener);
+ } else if (VideoStreamTrack* video = aTrack->AsVideoStreamTrack()) {
+ if (!mVideoEncoder) {
+ // No video encoder for this video track. It could be disabled.
+ LOG(LogLevel::Warning, ("Cannot connect to video track - no encoder"));
+ return;
+ }
+
+ MOZ_ASSERT(!mVideoTrack, "Only one video track supported.");
+ MOZ_ASSERT(mVideoListener, "No video listener for this video track");
+
+ LOG(LogLevel::Info, ("Connected to video track %p", aTrack));
+
+ mVideoTrack = video;
+ video->AddDirectListener(mVideoListener);
+ video->AddListener(mVideoListener);
+ } else {
+ MOZ_ASSERT(false, "Unknown track type");
+ }
+}
+
+void MediaEncoder::RemoveMediaStreamTrack(MediaStreamTrack* aTrack) {
+ if (!aTrack) {
+ MOZ_ASSERT(false);
+ return;
+ }
+
+ if (AudioStreamTrack* audio = aTrack->AsAudioStreamTrack()) {
+ if (audio != mAudioTrack) {
+ MOZ_ASSERT(false, "Not connected to this audio track");
+ return;
+ }
+
+ if (mAudioListener) {
+ audio->RemoveDirectListener(mAudioListener);
+ audio->RemoveListener(mAudioListener);
+ }
+ mAudioTrack = nullptr;
+ } else if (VideoStreamTrack* video = aTrack->AsVideoStreamTrack()) {
+ if (video != mVideoTrack) {
+ MOZ_ASSERT(false, "Not connected to this video track");
+ return;
+ }
+
+ if (mVideoListener) {
+ video->RemoveDirectListener(mVideoListener);
+ video->RemoveListener(mVideoListener);
+ }
+ mVideoTrack = nullptr;
+ }
+}
+
+/* static */
+already_AddRefed<MediaEncoder> MediaEncoder::CreateEncoder(
+ RefPtr<TaskQueue> aEncoderThread, const nsAString& aMimeType,
+ uint32_t aAudioBitrate, uint32_t aVideoBitrate, uint8_t aTrackTypes,
+ TrackRate aTrackRate, uint64_t aMaxMemory, TimeDuration aTimeslice) {
+ AUTO_PROFILER_LABEL("MediaEncoder::CreateEncoder", OTHER);
+
+ UniquePtr<ContainerWriter> writer;
+ UniquePtr<AudioTrackEncoder> audioEncoder;
+ UniquePtr<VideoTrackEncoder> videoEncoder;
+ auto encodedAudioQueue = MakeUnique<MediaQueue<EncodedFrame>>();
+ auto encodedVideoQueue = MakeUnique<MediaQueue<EncodedFrame>>();
+ auto driftCompensator =
+ MakeRefPtr<DriftCompensator>(aEncoderThread, aTrackRate);
+
+ Maybe<MediaContainerType> mimeType = MakeMediaContainerType(aMimeType);
+ if (!mimeType) {
+ return nullptr;
+ }
+
+ for (const auto& codec : mimeType->ExtendedType().Codecs().Range()) {
+ if (codec.EqualsLiteral("opus")) {
+ MOZ_ASSERT(!audioEncoder);
+ audioEncoder =
+ MakeUnique<OpusTrackEncoder>(aTrackRate, *encodedAudioQueue);
+ } else if (codec.EqualsLiteral("vp8") || codec.EqualsLiteral("vp8.0")) {
+ MOZ_ASSERT(!videoEncoder);
+ if (Preferences::GetBool("media.recorder.video.frame_drops", true)) {
+ videoEncoder = MakeUnique<VP8TrackEncoder>(driftCompensator, aTrackRate,
+ *encodedVideoQueue,
+ FrameDroppingMode::ALLOW);
+ } else {
+ videoEncoder = MakeUnique<VP8TrackEncoder>(driftCompensator, aTrackRate,
+ *encodedVideoQueue,
+ FrameDroppingMode::DISALLOW);
+ }
+ } else {
+ MOZ_CRASH("Unknown codec");
+ }
+ }
+
+ if (mimeType->Type() == MEDIAMIMETYPE(VIDEO_WEBM) ||
+ mimeType->Type() == MEDIAMIMETYPE(AUDIO_WEBM)) {
+ MOZ_ASSERT_IF(mimeType->Type() == MEDIAMIMETYPE(AUDIO_WEBM), !videoEncoder);
+ writer = MakeUnique<WebMWriter>();
+ } else if (mimeType->Type() == MEDIAMIMETYPE(AUDIO_OGG)) {
+ MOZ_ASSERT(audioEncoder);
+ MOZ_ASSERT(!videoEncoder);
+ writer = MakeUnique<OggWriter>();
+ }
+ NS_ENSURE_TRUE(writer, nullptr);
+
+ LOG(LogLevel::Info,
+ ("Create encoder result:a[%p](%u bps) v[%p](%u bps) w[%p] mimeType = "
+ "%s.",
+ audioEncoder.get(), aAudioBitrate, videoEncoder.get(), aVideoBitrate,
+ writer.get(), NS_ConvertUTF16toUTF8(aMimeType).get()));
+
+ if (audioEncoder) {
+ audioEncoder->SetWorkerThread(aEncoderThread);
+ if (aAudioBitrate != 0) {
+ audioEncoder->SetBitrate(aAudioBitrate);
+ }
+ }
+ if (videoEncoder) {
+ videoEncoder->SetWorkerThread(aEncoderThread);
+ if (aVideoBitrate != 0) {
+ videoEncoder->SetBitrate(aVideoBitrate);
+ }
+ }
+ return MakeAndAddRef<MediaEncoder>(
+ std::move(aEncoderThread), std::move(driftCompensator), std::move(writer),
+ std::move(audioEncoder), std::move(videoEncoder),
+ std::move(encodedAudioQueue), std::move(encodedVideoQueue), aTrackRate,
+ aMimeType, aMaxMemory, aTimeslice);
+}
+
+nsresult MediaEncoder::GetEncodedData(
+ nsTArray<nsTArray<uint8_t>>* aOutputBufs) {
+ AUTO_PROFILER_LABEL("MediaEncoder::GetEncodedData", OTHER);
+
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+
+ LOG(LogLevel::Verbose,
+ ("GetEncodedData TimeStamp = %f", GetEncodeTimeStamp()));
+
+ if (!mInitialized) {
+ return NS_ERROR_NOT_INITIALIZED;
+ }
+
+ nsresult rv = mMuxer->GetData(aOutputBufs);
+ if (mMuxer->IsFinished()) {
+ mCompleted = true;
+ }
+
+ LOG(LogLevel::Verbose,
+ ("END GetEncodedData TimeStamp=%f "
+ "mCompleted=%d, aComplete=%d, vComplete=%d",
+ GetEncodeTimeStamp(), mCompleted,
+ !mAudioEncoder || mAudioEncoder->IsEncodingComplete(),
+ !mVideoEncoder || mVideoEncoder->IsEncodingComplete()));
+
+ return rv;
+}
+
+void MediaEncoder::MaybeShutdown() {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+ if (!mEncodedAudioQueue->IsFinished()) {
+ LOG(LogLevel::Debug,
+ ("MediaEncoder %p not shutting down, audio is still live", this));
+ return;
+ }
+
+ if (!mEncodedVideoQueue->IsFinished()) {
+ LOG(LogLevel::Debug,
+ ("MediaEncoder %p not shutting down, video is still live", this));
+ return;
+ }
+
+ mShutdownEvent.Notify();
+
+ // Stop will Shutdown() gracefully.
+ Unused << InvokeAsync(mMainThread, this, __func__, &MediaEncoder::Stop);
+}
+
+RefPtr<GenericNonExclusivePromise> MediaEncoder::Shutdown() {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+ if (mShutdownPromise) {
+ return mShutdownPromise;
+ }
+
+ LOG(LogLevel::Info, ("MediaEncoder is shutting down."));
+
+ AutoTArray<RefPtr<GenericNonExclusivePromise>, 2> shutdownPromises;
+ if (mAudioListener) {
+ shutdownPromises.AppendElement(mAudioListener->OnShutdown());
+ }
+ if (mVideoListener) {
+ shutdownPromises.AppendElement(mVideoListener->OnShutdown());
+ }
+
+ mShutdownPromise =
+ GenericNonExclusivePromise::All(mEncoderThread, shutdownPromises)
+ ->Then(mEncoderThread, __func__,
+ [](const GenericNonExclusivePromise::AllPromiseType::
+ ResolveOrRejectValue& aValue) {
+ if (aValue.IsResolve()) {
+ return GenericNonExclusivePromise::CreateAndResolve(
+ true, __func__);
+ }
+ return GenericNonExclusivePromise::CreateAndReject(
+ aValue.RejectValue(), __func__);
+ });
+
+ mShutdownPromise->Then(
+ mEncoderThread, __func__, [self = RefPtr<MediaEncoder>(this), this] {
+ if (mAudioEncoder) {
+ mAudioEncoder->UnregisterListener(mEncoderListener);
+ }
+ if (mVideoEncoder) {
+ mVideoEncoder->UnregisterListener(mEncoderListener);
+ }
+ mEncoderListener->Forget();
+ mMuxer->Disconnect();
+ mAudioPushListener.DisconnectIfExists();
+ mAudioFinishListener.DisconnectIfExists();
+ mVideoPushListener.DisconnectIfExists();
+ mVideoFinishListener.DisconnectIfExists();
+ });
+
+ return mShutdownPromise;
+}
+
+RefPtr<GenericNonExclusivePromise> MediaEncoder::Stop() {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ LOG(LogLevel::Info, ("MediaEncoder %p Stop", this));
+
+ DisconnectTracks();
+
+ return InvokeAsync(mEncoderThread, this, __func__, &MediaEncoder::Shutdown);
+}
+
+RefPtr<GenericNonExclusivePromise> MediaEncoder::Cancel() {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ LOG(LogLevel::Info, ("MediaEncoder %p Cancel", this));
+
+ DisconnectTracks();
+
+ return InvokeAsync(mEncoderThread, __func__,
+ [self = RefPtr<MediaEncoder>(this), this]() {
+ if (mAudioEncoder) {
+ mAudioEncoder->Cancel();
+ }
+ if (mVideoEncoder) {
+ mVideoEncoder->Cancel();
+ }
+ return Shutdown();
+ });
+}
+
+bool MediaEncoder::HasError() {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+ return mError;
+}
+
+void MediaEncoder::SetError() {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+
+ if (mError) {
+ return;
+ }
+
+ mError = true;
+ mErrorEvent.Notify();
+}
+
+auto MediaEncoder::RequestData() -> RefPtr<BlobPromise> {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+ TimeUnit muxedEndTime = std::min(mMuxedAudioEndTime, mMuxedVideoEndTime);
+ mLastBlobTime = muxedEndTime;
+ mLastExtractTime = muxedEndTime;
+ return Extract()->Then(
+ mMainThread, __func__,
+ [this, self = RefPtr<MediaEncoder>(this)](
+ const GenericPromise::ResolveOrRejectValue& aValue) {
+ // Even if rejected, we want to gather what has already been
+ // extracted into the current blob and expose that.
+ Unused << NS_WARN_IF(aValue.IsReject());
+ return GatherBlob();
+ });
+}
+
+void MediaEncoder::MaybeCreateMutableBlobStorage() {
+ MOZ_ASSERT(NS_IsMainThread());
+ if (!mMutableBlobStorage) {
+ mMutableBlobStorage = new MutableBlobStorage(
+ MutableBlobStorage::eCouldBeInTemporaryFile, nullptr, mMaxMemory);
+ }
+}
+
+void MediaEncoder::OnEncodedAudioPushed(const RefPtr<EncodedFrame>& aFrame) {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+ mMuxedAudioEndTime = aFrame->GetEndTime();
+ MaybeExtractOrGatherBlob();
+}
+
+void MediaEncoder::OnEncodedVideoPushed(const RefPtr<EncodedFrame>& aFrame) {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+ mMuxedVideoEndTime = aFrame->GetEndTime();
+ MaybeExtractOrGatherBlob();
+}
+
+void MediaEncoder::MaybeExtractOrGatherBlob() {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+
+ TimeUnit muxedEndTime = std::min(mMuxedAudioEndTime, mMuxedVideoEndTime);
+ if ((muxedEndTime - mLastBlobTime).ToTimeDuration() >= mTimeslice) {
+ LOG(LogLevel::Verbose, ("MediaEncoder %p Muxed %.2fs of data since last "
+ "blob. Issuing new blob.",
+ this, (muxedEndTime - mLastBlobTime).ToSeconds()));
+ RequestData()->Then(mEncoderThread, __func__,
+ [this, self = RefPtr<MediaEncoder>(this)](
+ const BlobPromise::ResolveOrRejectValue& aValue) {
+ if (aValue.IsReject()) {
+ SetError();
+ return;
+ }
+ RefPtr<BlobImpl> blob = aValue.ResolveValue();
+ mDataAvailableEvent.Notify(std::move(blob));
+ });
+ }
+
+ if (muxedEndTime - mLastExtractTime > TimeUnit::FromSeconds(1)) {
+ // Extract data from the muxer at least every second.
+ LOG(LogLevel::Verbose,
+ ("MediaEncoder %p Muxed %.2fs of data since last "
+ "extract. Extracting more data into blob.",
+ this, (muxedEndTime - mLastExtractTime).ToSeconds()));
+ mLastExtractTime = muxedEndTime;
+ Unused << Extract();
+ }
+}
+
+// Pull encoded media data from MediaEncoder and put into MutableBlobStorage.
+RefPtr<GenericPromise> MediaEncoder::Extract() {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+
+ LOG(LogLevel::Debug, ("MediaEncoder %p Extract", this));
+
+ AUTO_PROFILER_LABEL("MediaEncoder::Extract", OTHER);
+
+ // Pull encoded media data from MediaEncoder
+ nsTArray<nsTArray<uint8_t>> buffer;
+ nsresult rv = GetEncodedData(&buffer);
+ MOZ_ASSERT(rv != NS_ERROR_INVALID_ARG, "Invalid args can be prevented.");
+ if (NS_FAILED(rv)) {
+ MOZ_RELEASE_ASSERT(buffer.IsEmpty());
+ // Even if we failed to encode more data, it might be time to push a blob
+ // with already encoded data.
+ }
+
+ // To ensure Extract() promises are resolved in calling order, we always
+ // invoke the main thread. Even when the encoded buffer is empty.
+ return InvokeAsync(
+ mMainThread, __func__,
+ [self = RefPtr<MediaEncoder>(this), this, buffer = std::move(buffer)] {
+ MaybeCreateMutableBlobStorage();
+ for (const auto& part : buffer) {
+ if (part.IsEmpty()) {
+ continue;
+ }
+
+ nsresult rv =
+ mMutableBlobStorage->Append(part.Elements(), part.Length());
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return GenericPromise::CreateAndReject(rv, __func__);
+ }
+ }
+ return GenericPromise::CreateAndResolve(true, __func__);
+ });
+}
+
+auto MediaEncoder::GatherBlob() -> RefPtr<BlobPromise> {
+ MOZ_ASSERT(NS_IsMainThread());
+ if (!mBlobPromise) {
+ return mBlobPromise = GatherBlobImpl();
+ }
+ return mBlobPromise = mBlobPromise->Then(mMainThread, __func__,
+ [self = RefPtr<MediaEncoder>(this)] {
+ return self->GatherBlobImpl();
+ });
+}
+
+auto MediaEncoder::GatherBlobImpl() -> RefPtr<BlobPromise> {
+ RefPtr<BlobStorer> storer = MakeAndAddRef<BlobStorer>();
+ MaybeCreateMutableBlobStorage();
+ mMutableBlobStorage->GetBlobImplWhenReady(NS_ConvertUTF16toUTF8(mMimeType),
+ storer);
+ mMutableBlobStorage = nullptr;
+
+ storer->Promise()->Then(
+ mMainThread, __func__,
+ [self = RefPtr<MediaEncoder>(this), p = storer->Promise()] {
+ if (self->mBlobPromise == p) {
+ // Reset BlobPromise.
+ self->mBlobPromise = nullptr;
+ }
+ });
+
+ return storer->Promise();
+}
+
+void MediaEncoder::DisconnectTracks() {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ if (mAudioNode) {
+ mAudioNode->GetTrack()->RemoveListener(mAudioListener);
+ if (mInputPort) {
+ mInputPort->Destroy();
+ mInputPort = nullptr;
+ }
+ if (mPipeTrack) {
+ mPipeTrack->RemoveListener(mAudioListener);
+ mPipeTrack->Destroy();
+ mPipeTrack = nullptr;
+ }
+ mAudioNode = nullptr;
+ }
+
+ if (mAudioTrack) {
+ RemoveMediaStreamTrack(mAudioTrack);
+ }
+
+ if (mVideoTrack) {
+ RemoveMediaStreamTrack(mVideoTrack);
+ }
+}
+
+bool MediaEncoder::IsWebMEncoderEnabled() {
+ return StaticPrefs::media_encoder_webm_enabled();
+}
+
+void MediaEncoder::UpdateInitialized() {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+
+ if (mInitialized) {
+ // This could happen if an encoder re-inits due to a resolution change.
+ return;
+ }
+
+ if (mAudioEncoder && !mAudioEncoder->IsInitialized()) {
+ LOG(LogLevel::Debug,
+ ("MediaEncoder %p UpdateInitialized waiting for audio", this));
+ return;
+ }
+
+ if (mVideoEncoder && !mVideoEncoder->IsInitialized()) {
+ LOG(LogLevel::Debug,
+ ("MediaEncoder %p UpdateInitialized waiting for video", this));
+ return;
+ }
+
+ MOZ_ASSERT(mMuxer->NeedsMetadata());
+ nsTArray<RefPtr<TrackMetadataBase>> meta;
+ if (mAudioEncoder && !*meta.AppendElement(mAudioEncoder->GetMetadata())) {
+ LOG(LogLevel::Error, ("Audio metadata is null"));
+ SetError();
+ return;
+ }
+ if (mVideoEncoder && !*meta.AppendElement(mVideoEncoder->GetMetadata())) {
+ LOG(LogLevel::Error, ("Video metadata is null"));
+ SetError();
+ return;
+ }
+
+ if (NS_FAILED(mMuxer->SetMetadata(meta))) {
+ LOG(LogLevel::Error, ("SetMetadata failed"));
+ SetError();
+ return;
+ }
+
+ LOG(LogLevel::Info,
+ ("MediaEncoder %p UpdateInitialized set metadata in muxer", this));
+
+ mInitialized = true;
+}
+
+void MediaEncoder::UpdateStarted() {
+ MOZ_ASSERT(mEncoderThread->IsCurrentThreadIn());
+
+ if (mStarted) {
+ return;
+ }
+
+ if (mAudioEncoder && !mAudioEncoder->IsStarted()) {
+ return;
+ }
+
+ if (mVideoEncoder && !mVideoEncoder->IsStarted()) {
+ return;
+ }
+
+ mStarted = true;
+
+ // Start issuing timeslice-based blobs.
+ MOZ_ASSERT(mLastBlobTime == TimeUnit::Zero());
+
+ mStartedEvent.Notify();
+}
+
+/*
+ * SizeOfExcludingThis measures memory being used by the Media Encoder.
+ * Currently it measures the size of the Encoder buffer and memory occupied
+ * by mAudioEncoder, mVideoEncoder, and any current blob storage.
+ */
+auto MediaEncoder::SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf)
+ -> RefPtr<SizeOfPromise> {
+ MOZ_ASSERT(NS_IsMainThread());
+ size_t blobStorageSize =
+ mMutableBlobStorage ? mMutableBlobStorage->SizeOfCurrentMemoryBuffer()
+ : 0;
+
+ return InvokeAsync(
+ mEncoderThread, __func__,
+ [self = RefPtr<MediaEncoder>(this), this, blobStorageSize,
+ aMallocSizeOf]() {
+ size_t size = 0;
+ if (mAudioEncoder) {
+ size += mAudioEncoder->SizeOfExcludingThis(aMallocSizeOf);
+ }
+ if (mVideoEncoder) {
+ size += mVideoEncoder->SizeOfExcludingThis(aMallocSizeOf);
+ }
+ return SizeOfPromise::CreateAndResolve(blobStorageSize + size,
+ __func__);
+ });
+}
+
+} // namespace mozilla
+
+#undef LOG
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 13:03:44 +0000