audio_track.h - mozsearch

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/*

 *  Copyright 2011 The WebRTC project authors. All Rights Reserved.

 *  Use of this source code is governed by a BSD-style license

 *  that can be found in the LICENSE file in the root of the source

 *  tree. An additional intellectual property rights grant can be found

 *  in the file PATENTS.  All contributing project authors may

 *  be found in the AUTHORS file in the root of the source tree.

*/

#ifndef PC_AUDIO_TRACK_H_

#define PC_AUDIO_TRACK_H_

#include <string>

#include "api/media_stream_interface.h"

#include "api/media_stream_track.h"

#include "api/scoped_refptr.h"

#include "api/sequence_checker.h"

#include "rtc_base/system/no_unique_address.h"

namespace webrtc {

// TODO(tommi): Instead of inheriting from `MediaStreamTrack<>`, implement the

// properties directly in this class. `MediaStreamTrack` doesn't guard against

// conflicting access, so we'd need to override those methods anyway in this

// class in order to make sure things are correctly checked.

class AudioTrack : public MediaStreamTrack<AudioTrackInterface>,

                   public ObserverInterface {

 protected:

  // Protected ctor to force use of factory method.

  AudioTrack(absl::string_view label,

             const rtc::scoped_refptr<AudioSourceInterface>& source);

  AudioTrack() = delete;

  AudioTrack(const AudioTrack&) = delete;

  AudioTrack& operator=(const AudioTrack&) = delete;

  ~AudioTrack() override;

 public:

  static rtc::scoped_refptr<AudioTrack> Create(

      absl::string_view id,

      const rtc::scoped_refptr<AudioSourceInterface>& source);

  // MediaStreamTrack implementation.

  std::string kind() const override;

  // AudioTrackInterface implementation.

  AudioSourceInterface* GetSource() const override;

  void AddSink(AudioTrackSinkInterface* sink) override;

  void RemoveSink(AudioTrackSinkInterface* sink) override;

 private:

  // ObserverInterface implementation.

  void OnChanged() override;

 private:

  const rtc::scoped_refptr<AudioSourceInterface> audio_source_;

  RTC_NO_UNIQUE_ADDRESS SequenceChecker signaling_thread_checker_;

};

}  // namespace webrtc

#endif  // PC_AUDIO_TRACK_H_