AudioStreamTrack.h

Enable keyboard shortcuts

/* 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 AUDIOSTREAMTRACK_H_

#define AUDIOSTREAMTRACK_H_

#include "CrossGraphPort.h"

#include "DOMMediaStream.h"

#include "MediaStreamTrack.h"

#include "nsClassHashtable.h"

namespace mozilla::dom {

class AudioStreamTrack : public MediaStreamTrack {

 public:

  AudioStreamTrack(

      nsPIDOMWindowInner* aWindow, mozilla::MediaTrack* aInputTrack,

      MediaStreamTrackSource* aSource,

      MediaStreamTrackState aReadyState = MediaStreamTrackState::Live,

      bool aMuted = false,

      const MediaTrackConstraints& aConstraints = MediaTrackConstraints())

      : MediaStreamTrack(aWindow, aInputTrack, aSource, aReadyState, aMuted,

                         aConstraints) {}

  already_AddRefed<MediaStreamTrack> Clone() override;

  AudioStreamTrack* AsAudioStreamTrack() override { return this; }

  const AudioStreamTrack* AsAudioStreamTrack() const override { return this; }

  // Direct output to aSink, or the default output device if aSink is null.

  // No more than one output may exist for a single aKey at any one time.

  // Returns a promise that resolves when the device is processing audio.

  RefPtr<GenericPromise> AddAudioOutput(void* aKey, AudioDeviceInfo* aSink);

  void RemoveAudioOutput(void* aKey);

  void SetAudioOutputVolume(void* aKey, float aVolume);

  // Use AddConsumerPort instead of ForwardTrackContentsTo when possible, since

  // it handles CrossGraphPort creation automatically. Must be balanced with a

  // corresponding RemoveConsumerPort call.

  already_AddRefed<MediaInputPort> AddConsumerPort(ProcessedMediaTrack* aTrack);

  void RemoveConsumerPort(MediaInputPort* aPort);

  // WebIDL

  void GetKind(nsAString& aKind) override { aKind.AssignLiteral("audio"); }

  void GetLabel(nsAString& aLabel, CallerType aCallerType) override;

 protected:

  void SetReadyState(MediaStreamTrackState aState) override;

 private:

  // Main thread only

  struct CrossGraphConnection {

    UniquePtr<CrossGraphPort> mPort;

    size_t mRefCount;

    explicit CrossGraphConnection(UniquePtr<CrossGraphPort> aPort)

        : mPort(std::move(aPort)), mRefCount(1) {}

};

  nsTArray<CrossGraphConnection> mCrossGraphs;

};

}  // namespace mozilla::dom

#endif /* AUDIOSTREAMTRACK_H_ */