import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/media/webrtc/MediaEngineDefault.h

@@ -0,0 +1,215 @@
+/* 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 "nsAutoPtr.h"
+#include "nsCOMPtr.h"
+#include "DOMMediaStream.h"
+#include "nsComponentManagerUtils.h"
+#include "mozilla/Monitor.h"
+
+#include "VideoUtils.h"
+#include "MediaEngine.h"
+#include "VideoSegment.h"
+#include "AudioSegment.h"
+#include "StreamTracks.h"
+#ifdef MOZ_WEBRTC
+#include "MediaEngineCameraVideoSource.h"
+#endif
+#include "MediaStreamGraph.h"
+#include "MediaTrackConstraints.h"
+
+namespace mozilla {
+
+namespace layers {
+class ImageContainer;
+} // namespace layers
+
+class MediaEngineDefault;
+
+/**
+ * The default implementation of the MediaEngine interface.
+ */
+class MediaEngineDefaultVideoSource : public nsITimerCallback,
+#ifdef MOZ_WEBRTC
+                                      public MediaEngineCameraVideoSource
+#else
+                                      public MediaEngineVideoSource
+#endif
+{
+public:
+  MediaEngineDefaultVideoSource();
+
+  void GetName(nsAString&) const override;
+  void GetUUID(nsACString&) const override;
+
+  nsresult Allocate(const dom::MediaTrackConstraints &aConstraints,
+                    const MediaEnginePrefs &aPrefs,
+                    const nsString& aDeviceId,
+                    const nsACString& aOrigin,
+                    AllocationHandle** aOutHandle,
+                    const char** aOutBadConstraint) override;
+  nsresult Deallocate(AllocationHandle* aHandle) override;
+  nsresult Start(SourceMediaStream*, TrackID, const PrincipalHandle&) override;
+  nsresult Stop(SourceMediaStream*, TrackID) override;
+  nsresult Restart(AllocationHandle* aHandle,
+                   const dom::MediaTrackConstraints& aConstraints,
+                   const MediaEnginePrefs &aPrefs,
+                   const nsString& aDeviceId,
+                   const char** aOutBadConstraint) override;
+  void SetDirectListeners(bool aHasDirectListeners) override {};
+  void NotifyPull(MediaStreamGraph* aGraph,
+                  SourceMediaStream *aSource,
+                  TrackID aId,
+                  StreamTime aDesiredTime,
+                  const PrincipalHandle& aPrincipalHandle) override;
+  uint32_t GetBestFitnessDistance(
+      const nsTArray<const NormalizedConstraintSet*>& aConstraintSets,
+      const nsString& aDeviceId) const override;
+
+  bool IsFake() override {
+    return true;
+  }
+
+  dom::MediaSourceEnum GetMediaSource() const override {
+    return dom::MediaSourceEnum::Camera;
+  }
+
+  nsresult TakePhoto(MediaEnginePhotoCallback* aCallback) override
+  {
+    return NS_ERROR_NOT_IMPLEMENTED;
+  }
+
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSITIMERCALLBACK
+
+protected:
+  ~MediaEngineDefaultVideoSource();
+
+  friend class MediaEngineDefault;
+
+  TrackID mTrackID;
+  nsCOMPtr<nsITimer> mTimer;
+  // mMonitor protects mImage access/changes, and transitions of mState
+  // from kStarted to kStopped (which are combined with EndTrack() and
+  // image changes).
+  Monitor mMonitor;
+  RefPtr<layers::Image> mImage;
+
+  RefPtr<layers::ImageContainer> mImageContainer;
+
+  MediaEnginePrefs mOpts;
+  int mCb;
+  int mCr;
+};
+
+class SineWaveGenerator;
+
+class MediaEngineDefaultAudioSource : public MediaEngineAudioSource
+{
+public:
+  MediaEngineDefaultAudioSource();
+
+  void GetName(nsAString&) const override;
+  void GetUUID(nsACString&) const override;
+
+  nsresult Allocate(const dom::MediaTrackConstraints &aConstraints,
+                    const MediaEnginePrefs &aPrefs,
+                    const nsString& aDeviceId,
+                    const nsACString& aOrigin,
+                    AllocationHandle** aOutHandle,
+                    const char** aOutBadConstraint) override;
+  nsresult Deallocate(AllocationHandle* aHandle) override;
+  nsresult Start(SourceMediaStream*, TrackID, const PrincipalHandle&) override;
+  nsresult Stop(SourceMediaStream*, TrackID) override;
+  nsresult Restart(AllocationHandle* aHandle,
+                   const dom::MediaTrackConstraints& aConstraints,
+                   const MediaEnginePrefs &aPrefs,
+                   const nsString& aDeviceId,
+                   const char** aOutBadConstraint) override;
+  void SetDirectListeners(bool aHasDirectListeners) override {};
+  void inline AppendToSegment(AudioSegment& aSegment,
+                              TrackTicks aSamples,
+                              const PrincipalHandle& aPrincipalHandle);
+  void NotifyPull(MediaStreamGraph* aGraph,
+                  SourceMediaStream *aSource,
+                  TrackID aId,
+                  StreamTime aDesiredTime,
+                  const PrincipalHandle& aPrincipalHandle) override;
+
+  void NotifyOutputData(MediaStreamGraph* aGraph,
+                        AudioDataValue* aBuffer, size_t aFrames,
+                        TrackRate aRate, uint32_t aChannels) override
+  {}
+  void NotifyInputData(MediaStreamGraph* aGraph,
+                       const AudioDataValue* aBuffer, size_t aFrames,
+                       TrackRate aRate, uint32_t aChannels) override
+  {}
+  void DeviceChanged() override
+  {}
+  bool IsFake() override {
+    return true;
+  }
+
+  dom::MediaSourceEnum GetMediaSource() const override {
+    return dom::MediaSourceEnum::Microphone;
+  }
+
+  nsresult TakePhoto(MediaEnginePhotoCallback* aCallback) override
+  {
+    return NS_ERROR_NOT_IMPLEMENTED;
+  }
+
+  uint32_t GetBestFitnessDistance(
+      const nsTArray<const NormalizedConstraintSet*>& aConstraintSets,
+      const nsString& aDeviceId) const override;
+
+  NS_DECL_THREADSAFE_ISUPPORTS
+
+protected:
+  ~MediaEngineDefaultAudioSource();
+
+  TrackID mTrackID;
+
+  TrackTicks mLastNotify; // Accessed in ::Start(), then on NotifyPull (from MSG thread)
+
+  // Created on Allocate, then accessed from NotifyPull (MSG thread)
+  nsAutoPtr<SineWaveGenerator> mSineGenerator;
+};
+
+
+class MediaEngineDefault : public MediaEngine
+{
+  typedef MediaEngine Super;
+public:
+  explicit MediaEngineDefault() : mMutex("mozilla::MediaEngineDefault") {}
+
+  void EnumerateVideoDevices(dom::MediaSourceEnum,
+                             nsTArray<RefPtr<MediaEngineVideoSource> >*) override;
+  void EnumerateAudioDevices(dom::MediaSourceEnum,
+                             nsTArray<RefPtr<MediaEngineAudioSource> >*) override;
+  void Shutdown() override {
+    MutexAutoLock lock(mMutex);
+
+    mVSources.Clear();
+    mASources.Clear();
+  };
+
+private:
+  ~MediaEngineDefault() {}
+
+  Mutex mMutex;
+  // protected with mMutex:
+
+  nsTArray<RefPtr<MediaEngineVideoSource> > mVSources;
+  nsTArray<RefPtr<MediaEngineAudioSource> > mASources;
+};
+
+} // namespace mozilla
+
+#endif /* NSMEDIAENGINEDEFAULT_H_ */