Create //webrtc/api:libjingle_peerconnection_api + refactorings.

webrtc/api/audiotrack.h

-/*
- *  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 WEBRTC_API_AUDIOTRACK_H_
-#define WEBRTC_API_AUDIOTRACK_H_
-
-#include <string>
-
-#include "webrtc/api/mediastreaminterface.h"
-#include "webrtc/api/mediastreamtrack.h"
-#include "webrtc/api/notifier.h"
-#include "webrtc/base/constructormagic.h"
-#include "webrtc/base/scoped_ref_ptr.h"
-#include "webrtc/base/thread_checker.h"
-
-namespace webrtc {
-
-class AudioTrack : public MediaStreamTrack<AudioTrackInterface>,
-                   public ObserverInterface {
- protected:
-  // Protected ctor to force use of factory method.
-  AudioTrack(const std::string& label,
-             const rtc::scoped_refptr<AudioSourceInterface>& source);
-  ~AudioTrack() override;
-
- public:
-  static rtc::scoped_refptr<AudioTrack> Create(
-      const std::string& id,
-      const rtc::scoped_refptr<AudioSourceInterface>& source);
-
- private:
-  // MediaStreamTrack implementation.
-  std::string kind() const override;
-
-  // AudioTrackInterface implementation.
-  AudioSourceInterface* GetSource() const override;
-
-  void AddSink(AudioTrackSinkInterface* sink) override;
-  void RemoveSink(AudioTrackSinkInterface* sink) override;
-
-  // ObserverInterface implementation.
-  void OnChanged() override;
-
- private:
-  const rtc::scoped_refptr<AudioSourceInterface> audio_source_;
-  rtc::ThreadChecker thread_checker_;
-  RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(AudioTrack);
-};
-
-}  // namespace webrtc
-
-#endif  // WEBRTC_API_AUDIOTRACK_H_