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0005a9e68a
Before this patch, it was unclear who was responsible for checking deviceId and groupId constraints for devices. MediaManager was doing it through one path for getUserMedia, with the help of the devices, as part of selecting the best-fitting device. However, Reconfigure() took another path where the regular backends for camera and microphone were implemented correctly, but fake devices were left out so automated tests for applyConstraints were failing. This patch lifts the responsibility for checking deviceId and groupId constraints out of the MediaEngineSources into MediaDevice, which already is the owner of the anonymized ids that MediaEngineSources are unaware of. This makes constraints checking a two-staged approached where deviceId and groupid goes first. If they satisfy the constraints, the underlying device is queried for whether the constraints fit. As a bonus, this unclutters a lot of the MediaEngineSource interface. Differential Revision: https://phabricator.services.mozilla.com/D40834 --HG-- extra : moz-landing-system : lando
157 lines
4.5 KiB
C++
157 lines
4.5 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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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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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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nsString GetGroupId() const override;
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nsresult Allocate(const dom::MediaTrackConstraints& aConstraints,
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const MediaEnginePrefs& aPrefs,
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const ipc::PrincipalInfo& aPrincipalInfo,
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const char** aOutBadConstraint) override;
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void SetTrack(const RefPtr<SourceMediaStream>& aStream, TrackID aTrackID,
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const PrincipalHandle& aPrincipal) override;
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nsresult Start() override;
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nsresult Reconfigure(const dom::MediaTrackConstraints& aConstraints,
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const MediaEnginePrefs& aPrefs,
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const char** aOutBadConstraint) override;
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nsresult Stop() override;
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nsresult Deallocate() override;
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uint32_t GetBestFitnessDistance(
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const nsTArray<const NormalizedConstraintSet*>& aConstraintSets)
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const override;
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void GetSettings(dom::MediaTrackSettings& aOutSettings) const override;
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bool IsFake() const override { return true; }
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dom::MediaSourceEnum GetMediaSource() const override {
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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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// Current state of this source.
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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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PrincipalHandle mPrincipalHandle = PRINCIPAL_HANDLE_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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// Main thread only.
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const RefPtr<media::Refcountable<dom::MediaTrackSettings>> mSettings;
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private:
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const nsString mName;
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};
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class AudioSourcePullListener;
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class MediaEngineDefaultAudioSource : public MediaEngineSource {
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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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nsString GetGroupId() const override;
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nsresult Allocate(const dom::MediaTrackConstraints& aConstraints,
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const MediaEnginePrefs& aPrefs,
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const ipc::PrincipalInfo& aPrincipalInfo,
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const char** aOutBadConstraint) override;
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void SetTrack(const RefPtr<SourceMediaStream>& aStream, TrackID aTrackID,
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const PrincipalHandle& aPrincipal) override;
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nsresult Start() override;
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nsresult Reconfigure(const dom::MediaTrackConstraints& aConstraints,
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const MediaEnginePrefs& aPrefs,
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const char** aOutBadConstraint) override;
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nsresult Stop() override;
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nsresult Deallocate() override;
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bool IsFake() const override { return true; }
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dom::MediaSourceEnum GetMediaSource() const override {
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return dom::MediaSourceEnum::Microphone;
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}
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void GetSettings(dom::MediaTrackSettings& aOutSettings) const override;
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protected:
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~MediaEngineDefaultAudioSource();
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// Current state of this source.
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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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PrincipalHandle mPrincipalHandle = PRINCIPAL_HANDLE_NONE;
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uint32_t mFrequency = 1000;
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RefPtr<AudioSourcePullListener> mPullListener;
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};
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class MediaEngineDefault : public MediaEngine {
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public:
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MediaEngineDefault() = default;
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void EnumerateDevices(uint64_t aWindowId, dom::MediaSourceEnum, MediaSinkEnum,
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nsTArray<RefPtr<MediaDevice>>*) override;
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void Shutdown() override {}
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private:
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~MediaEngineDefault() = default;
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};
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} // namespace mozilla
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#endif /* NSMEDIAENGINEDEFAULT_H_ */
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