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::dom {
  15
  16 class AudioStreamTrack : public MediaStreamTrack {
  17  public:
  18   AudioStreamTrack(
  19       nsPIDOMWindowInner* aWindow, mozilla::MediaTrack* aInputTrack,
  20       MediaStreamTrackSource* aSource,
  21       MediaStreamTrackState aReadyState = MediaStreamTrackState::Live,
  22       bool aMuted = false,
  23       const MediaTrackConstraints& aConstraints = MediaTrackConstraints())
  24       : MediaStreamTrack(aWindow, aInputTrack, aSource, aReadyState, aMuted,
  25                          aConstraints) {}
  26
  27   AudioStreamTrack* AsAudioStreamTrack() override { return this; }
  28   const AudioStreamTrack* AsAudioStreamTrack() const override { return this; }
  29
  30   void AddAudioOutput(void* aKey);
  31   void RemoveAudioOutput(void* aKey);
  32   void SetAudioOutputVolume(void* aKey, float aVolume);
  33   RefPtr<GenericPromise> SetAudioOutputDevice(void* key,
  34                                               AudioDeviceInfo* aSink);
  35
  36   // WebIDL
  37   void GetKind(nsAString& aKind) override { aKind.AssignLiteral("audio"); }
  38
  39   void GetLabel(nsAString& aLabel, CallerType aCallerType) override;
  40
  41  protected:
  42   already_AddRefed<MediaStreamTrack> CloneInternal() override;
  43   void SetReadyState(MediaStreamTrackState aState) override;
  44
  45  private:
  46   // Track CrossGraphPort per AudioOutput key. This is required in order to
  47   // redirect all AudioOutput requests (add, remove, set volume) to the
  48   // receiver track which, belonging to the remote graph. MainThread only.
  49   nsClassHashtable<nsPtrHashKey<void>, UniquePtr<CrossGraphPort>> mCrossGraphs;
  50 };
  51
  52 }  // namespace mozilla::dom
  53
  54 #endif /* AUDIOSTREAMTRACK_H_ */