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edf62f8506
MozReview-Commit-ID: 6AL8QpSnwwm --HG-- extra : rebase_source : 1cf74cb4c177fcaca91f923748308e20d6c38136
209 lines
6.5 KiB
C++
209 lines
6.5 KiB
C++
/* 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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#ifndef MEDIAENGINEDEFAULT_H_
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#define MEDIAENGINEDEFAULT_H_
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#include "nsINamed.h"
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#include "nsITimer.h"
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#include "nsAutoPtr.h"
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#include "nsCOMPtr.h"
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#include "DOMMediaStream.h"
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#include "nsComponentManagerUtils.h"
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#include "mozilla/Mutex.h"
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#include "VideoUtils.h"
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#include "MediaEngine.h"
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#include "MediaEnginePrefs.h"
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#include "VideoSegment.h"
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#include "AudioSegment.h"
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#include "StreamTracks.h"
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#include "MediaEngineSource.h"
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#include "MediaStreamGraph.h"
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#include "SineWaveGenerator.h"
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namespace mozilla {
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namespace layers {
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class ImageContainer;
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} // namespace layers
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class MediaEngineDefault;
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/**
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* The default implementation of the MediaEngine interface.
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*/
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class MediaEngineDefaultVideoSource : public MediaEngineSource
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{
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public:
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MediaEngineDefaultVideoSource();
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nsString GetName() const override;
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nsCString GetUUID() const override;
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nsresult Allocate(const dom::MediaTrackConstraints &aConstraints,
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const MediaEnginePrefs &aPrefs,
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const nsString& aDeviceId,
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const ipc::PrincipalInfo& aPrincipalInfo,
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AllocationHandle** aOutHandle,
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const char** aOutBadConstraint) override;
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nsresult SetTrack(const RefPtr<const AllocationHandle>& aHandle,
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const RefPtr<SourceMediaStream>& aStream,
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TrackID aTrackID,
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const PrincipalHandle& aPrincipal) override;
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nsresult Start(const RefPtr<const AllocationHandle>& aHandle) override;
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nsresult Reconfigure(const RefPtr<AllocationHandle>& aHandle,
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const dom::MediaTrackConstraints& aConstraints,
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const MediaEnginePrefs& aPrefs,
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const nsString& aDeviceId,
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const char** aOutBadConstraint) override;
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nsresult Stop(const RefPtr<const AllocationHandle>& aHandle) override;
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nsresult Deallocate(const RefPtr<const AllocationHandle>& aHandle) override;
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void Pull(const RefPtr<const AllocationHandle>& aHandle,
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const RefPtr<SourceMediaStream>& aStream,
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TrackID aTrackID,
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StreamTime aDesiredTime,
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const PrincipalHandle& aPrincipalHandle) override;
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uint32_t GetBestFitnessDistance(
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const nsTArray<const NormalizedConstraintSet*>& aConstraintSets,
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const nsString& aDeviceId) const override;
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bool IsFake() const override
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{
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return true;
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}
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dom::MediaSourceEnum GetMediaSource() const override
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{
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return dom::MediaSourceEnum::Camera;
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}
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protected:
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~MediaEngineDefaultVideoSource();
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/**
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* Called by mTimer when it's time to generate a new frame.
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*/
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void GenerateFrame();
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nsCOMPtr<nsITimer> mTimer;
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RefPtr<layers::ImageContainer> mImageContainer;
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// mMutex protects mState, mImage, mStream, mTrackID
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Mutex mMutex;
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// Current state of this source.
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// Set under mMutex on the owning thread. Accessed under one of the two.
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MediaEngineSourceState mState = kReleased;
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RefPtr<layers::Image> mImage;
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RefPtr<SourceMediaStream> mStream;
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TrackID mTrackID = TRACK_NONE;
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MediaEnginePrefs mOpts;
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int mCb = 16;
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int mCr = 16;
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};
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class SineWaveGenerator;
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class MediaEngineDefaultAudioSource : public MediaEngineSource
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{
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public:
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MediaEngineDefaultAudioSource();
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nsString GetName() const override;
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nsCString GetUUID() const override;
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nsresult Allocate(const dom::MediaTrackConstraints &aConstraints,
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const MediaEnginePrefs &aPrefs,
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const nsString& aDeviceId,
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const ipc::PrincipalInfo& aPrincipalInfo,
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AllocationHandle** aOutHandle,
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const char** aOutBadConstraint) override;
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nsresult SetTrack(const RefPtr<const AllocationHandle>& aHandle,
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const RefPtr<SourceMediaStream>& aStream,
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TrackID aTrackID,
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const PrincipalHandle& aPrincipal) override;
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nsresult Start(const RefPtr<const AllocationHandle>& aHandle) override;
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nsresult Reconfigure(const RefPtr<AllocationHandle>& aHandle,
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const dom::MediaTrackConstraints& aConstraints,
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const MediaEnginePrefs& aPrefs,
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const nsString& aDeviceId,
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const char** aOutBadConstraint) override;
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nsresult Stop(const RefPtr<const AllocationHandle>& aHandle) override;
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nsresult Deallocate(const RefPtr<const AllocationHandle>& aHandle) override;
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void inline AppendToSegment(AudioSegment& aSegment,
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TrackTicks aSamples,
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const PrincipalHandle& aPrincipalHandle);
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void Pull(const RefPtr<const AllocationHandle>& aHandle,
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const RefPtr<SourceMediaStream>& aStream,
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TrackID aTrackID,
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StreamTime aDesiredTime,
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const PrincipalHandle& aPrincipalHandle) override;
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bool IsFake() const override
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{
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return true;
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}
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dom::MediaSourceEnum GetMediaSource() const override
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{
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return dom::MediaSourceEnum::Microphone;
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}
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uint32_t GetBestFitnessDistance(
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const nsTArray<const NormalizedConstraintSet*>& aConstraintSets,
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const nsString& aDeviceId) const override;
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bool IsAvailable() const;
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protected:
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~MediaEngineDefaultAudioSource();
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// mMutex protects mState, mStream, mTrackID
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Mutex mMutex;
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// Current state of this source.
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// Set under mMutex on the owning thread. Accessed under one of the two.
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MediaEngineSourceState mState = kReleased;
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RefPtr<SourceMediaStream> mStream;
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TrackID mTrackID = TRACK_NONE;
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// Accessed in Pull (from MSG thread)
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TrackTicks mLastNotify = 0;
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uint32_t mFreq = 1000; // ditto
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// Created on Start, then accessed from Pull (MSG thread)
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nsAutoPtr<SineWaveGenerator> mSineGenerator;
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};
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class MediaEngineDefault : public MediaEngine
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{
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public:
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MediaEngineDefault() = default;
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void EnumerateDevices(uint64_t aWindowId,
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dom::MediaSourceEnum,
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nsTArray<RefPtr<MediaEngineSource>>*) override;
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void Shutdown() override;
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void ReleaseResourcesForWindow(uint64_t aWindowId) override;
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private:
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~MediaEngineDefault() = default;
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// WindowID -> Array of devices.
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nsClassHashtable<nsUint64HashKey,
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nsTArray<RefPtr<MediaEngineSource>>> mVSources;
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nsClassHashtable<nsUint64HashKey,
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nsTArray<RefPtr<MediaEngineDefaultAudioSource>>> mASources;
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};
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} // namespace mozilla
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#endif /* NSMEDIAENGINEDEFAULT_H_ */
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