Source code

Revision control

Other Tools

/* 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/. */
#ifndef MEDIAENGINEDEFAULT_H_
#define MEDIAENGINEDEFAULT_H_
#include "nsITimer.h"
#include "nsCOMPtr.h"
#include "DOMMediaStream.h"
#include "nsComponentManagerUtils.h"
#include "mozilla/Mutex.h"
#include "VideoUtils.h"
#include "MediaEngine.h"
#include "MediaEnginePrefs.h"
#include "VideoSegment.h"
#include "AudioSegment.h"
#include "MediaEngineSource.h"
#include "MediaTrackGraph.h"
namespace mozilla {
namespace layers {
class ImageContainer;
} // namespace layers
class MediaEngineDefault;
/**
* The default implementation of the MediaEngine interface.
*/
class MediaEngineDefaultVideoSource : public MediaEngineSource {
public:
MediaEngineDefaultVideoSource();
nsString GetName() const override;
nsCString GetUUID() const override;
nsString GetGroupId() const override;
nsresult Allocate(const dom::MediaTrackConstraints& aConstraints,
const MediaEnginePrefs& aPrefs, uint64_t aWindowID,
const char** aOutBadConstraint) override;
void SetTrack(const RefPtr<MediaTrack>& aTrack,
const PrincipalHandle& aPrincipal) override;
nsresult Start() override;
nsresult Reconfigure(const dom::MediaTrackConstraints& aConstraints,
const MediaEnginePrefs& aPrefs,
const char** aOutBadConstraint) override;
nsresult Stop() override;
nsresult Deallocate() override;
uint32_t GetBestFitnessDistance(
const nsTArray<const NormalizedConstraintSet*>& aConstraintSets)
const override;
void GetSettings(dom::MediaTrackSettings& aOutSettings) const override;
bool IsFake() const override { return true; }
dom::MediaSourceEnum GetMediaSource() const override {
return dom::MediaSourceEnum::Camera;
}
protected:
~MediaEngineDefaultVideoSource();
/**
* Called by mTimer when it's time to generate a new frame.
*/
void GenerateFrame();
nsCOMPtr<nsITimer> mTimer;
RefPtr<layers::ImageContainer> mImageContainer;
// Current state of this source.
MediaEngineSourceState mState = kReleased;
RefPtr<layers::Image> mImage;
RefPtr<SourceMediaTrack> mTrack;
PrincipalHandle mPrincipalHandle = PRINCIPAL_HANDLE_NONE;
MediaEnginePrefs mOpts;
int mCb = 16;
int mCr = 16;
// Main thread only.
const RefPtr<media::Refcountable<dom::MediaTrackSettings>> mSettings;
private:
const nsString mName;
};
class AudioSourcePullListener;
class MediaEngineDefaultAudioSource : public MediaEngineSource {
public:
MediaEngineDefaultAudioSource();
nsString GetName() const override;
nsCString GetUUID() const override;
nsString GetGroupId() const override;
nsresult Allocate(const dom::MediaTrackConstraints& aConstraints,
const MediaEnginePrefs& aPrefs, uint64_t aWindowID,
const char** aOutBadConstraint) override;
void SetTrack(const RefPtr<MediaTrack>& aTrack,
const PrincipalHandle& aPrincipal) override;
nsresult Start() override;
nsresult Reconfigure(const dom::MediaTrackConstraints& aConstraints,
const MediaEnginePrefs& aPrefs,
const char** aOutBadConstraint) override;
nsresult Stop() override;
nsresult Deallocate() override;
bool IsFake() const override { return true; }
dom::MediaSourceEnum GetMediaSource() const override {
return dom::MediaSourceEnum::Microphone;
}
void GetSettings(dom::MediaTrackSettings& aOutSettings) const override;
protected:
~MediaEngineDefaultAudioSource();
// Current state of this source.
MediaEngineSourceState mState = kReleased;
RefPtr<SourceMediaTrack> mTrack;
PrincipalHandle mPrincipalHandle = PRINCIPAL_HANDLE_NONE;
uint32_t mFrequency = 1000;
RefPtr<AudioSourcePullListener> mPullListener;
};
class MediaEngineDefault : public MediaEngine {
public:
MediaEngineDefault() = default;
void EnumerateDevices(uint64_t aWindowId, dom::MediaSourceEnum, MediaSinkEnum,
nsTArray<RefPtr<MediaDevice>>*) override;
void Shutdown() override {}
MediaEventSource<void>& DeviceListChangeEvent() override {
return mDeviceListChangeEvent;
}
private:
~MediaEngineDefault() = default;
MediaEventProducer<void> mDeviceListChangeEvent;
};
} // namespace mozilla
#endif /* NSMEDIAENGINEDEFAULT_H_ */