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