dom/media/AudioStreamTrack.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   4  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef AUDIOSTREAMTRACK_H_
   7 #define AUDIOSTREAMTRACK_H_
   8
   9 #include "MediaStreamTrack.h"
  10 #include "DOMMediaStream.h"
  11 #include "CrossGraphPort.h"
  12 #include "nsClassHashtable.h"
  13
  14 namespace mozilla {
  15 namespace dom {
  16
  17 class AudioStreamTrack : public MediaStreamTrack {
  18  public:
  19   AudioStreamTrack(
  20       nsPIDOMWindowInner* aWindow, mozilla::MediaTrack* aInputTrack,
  21       MediaStreamTrackSource* aSource,
  22       MediaStreamTrackState aReadyState = MediaStreamTrackState::Live,
  23       bool aMuted = false,
  24       const MediaTrackConstraints& aConstraints = MediaTrackConstraints())
  25       : MediaStreamTrack(aWindow, aInputTrack, aSource, aReadyState, aMuted,
  26                          aConstraints) {}
  27
  28   AudioStreamTrack* AsAudioStreamTrack() override { return this; }
  29   const AudioStreamTrack* AsAudioStreamTrack() const override { return this; }
  30
  31   void AddAudioOutput(void* aKey);
  32   void RemoveAudioOutput(void* aKey);
  33   void SetAudioOutputVolume(void* aKey, float aVolume);
  34   RefPtr<GenericPromise> SetAudioOutputDevice(void* key,
  35                                               AudioDeviceInfo* aSink);
  36
  37   // WebIDL
  38   void GetKind(nsAString& aKind) override { aKind.AssignLiteral("audio"); }
  39
  40   void GetLabel(nsAString& aLabel, CallerType aCallerType) override;
  41
  42  protected:
  43   already_AddRefed<MediaStreamTrack> CloneInternal() override;
  44   void SetReadyState(MediaStreamTrackState aState) override;
  45
  46  private:
  47   // Track CrossGraphPort per AudioOutput key. This is required in order to
  48   // redirect all AudioOutput requests (add, remove, set volume) to the
  49   // receiver track which, belonging to the remote graph. MainThread only.
  50   nsClassHashtable<nsPtrHashKey<void>, UniquePtr<CrossGraphPort>> mCrossGraphs;
  51 };
  52
  53 }  // namespace dom
  54 }  // namespace mozilla
  55
  56 #endif /* AUDIOSTREAMTRACK_H_ */