1// Copyright 2014 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef CONTENT_RENDERER_MEDIA_MEDIA_STREAM_TRACK_H_ 6#define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_TRACK_H_ 7 8#include "base/callback.h" 9#include "base/compiler_specific.h" 10#include "base/memory/ref_counted.h" 11#include "base/threading/thread_checker.h" 12#include "content/common/content_export.h" 13#include "third_party/WebKit/public/platform/WebMediaStreamTrack.h" 14 15namespace webrtc { 16class AudioTrackInterface; 17class MediaStreamTrackInterface; 18} // namespace webrtc 19 20namespace content { 21 22// MediaStreamTrack is a Chrome representation of blink::WebMediaStreamTrack. 23// It is owned by blink::WebMediaStreamTrack as 24// blink::WebMediaStreamTrack::ExtraData. 25class CONTENT_EXPORT MediaStreamTrack 26 : NON_EXPORTED_BASE(public blink::WebMediaStreamTrack::ExtraData) { 27 public: 28 MediaStreamTrack( 29 const scoped_refptr<webrtc::MediaStreamTrackInterface>& track, 30 bool is_local_track); 31 virtual ~MediaStreamTrack(); 32 33 static MediaStreamTrack* GetTrack( 34 const blink::WebMediaStreamTrack& track); 35 36 // If a subclass overrides this method it has to call the base class. 37 virtual void SetEnabled(bool enabled); 38 39 // TODO(xians): Make this pure virtual when Stop[Track] has been 40 // implemented for remote audio tracks. 41 virtual void Stop(); 42 43 virtual webrtc::AudioTrackInterface* GetAudioAdapter(); 44 45 bool is_local_track () const { return is_local_track_; } 46 47 protected: 48 scoped_refptr<webrtc::MediaStreamTrackInterface> track_; 49 50 private: 51 const bool is_local_track_; 52 53 base::ThreadChecker thread_checker_; 54 55 DISALLOW_COPY_AND_ASSIGN(MediaStreamTrack); 56}; 57 58} // namespace content 59 60#endif // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_TRACK_H_ 61