webrtc_video_track_adapter.h revision 0529e5d033099cbfc42635f6f6183833b09dff6e 
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_WEBRTC_WEBRTC_VIDEO_TRACK_ADAPTER_H_
6#define CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_TRACK_ADAPTER_H_
7
8#include "base/macros.h"
9#include "base/threading/thread_checker.h"
10#include "content/public/renderer/media_stream_video_sink.h"
11#include "content/renderer/media/media_stream_dependency_factory.h"
12#include "content/renderer/media/webrtc/webrtc_video_capturer_adapter.h"
13#include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
14#include "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h"
15#include "third_party/libjingle/source/talk/app/webrtc/videosourceinterface.h"
16
17namespace content {
18
19// WebRtcVideoTrackAdapter is an adapter between a
20// content::MediaStreamVideoTrack object and a webrtc VideoTrack that is
21// currently sent on a PeerConnection.
22// The responsibility of the class is to create and own a representation of a
23// webrtc VideoTrack that can be added and removed from a RTCPeerConnection.
24// An instance of WebRtcVideoTrackAdapter is created when a VideoTrack is
25// added to an RTCPeerConnection object.
26// Instances of this class is owned by the WebRtcMediaStreamAdapter object that
27// created it.
28class WebRtcVideoTrackAdapter : public MediaStreamVideoSink {
29 public:
30  WebRtcVideoTrackAdapter(const blink::WebMediaStreamTrack& track,
31                          MediaStreamDependencyFactory* factory);
32  virtual ~WebRtcVideoTrackAdapter();
33
34  webrtc::VideoTrackInterface* webrtc_video_track() {
35    return video_track_.get();
36  }
37
38 protected:
39  // Implements MediaStreamVideoSink
40  virtual void OnVideoFrame(
41      const scoped_refptr<media::VideoFrame>& frame) OVERRIDE;
42  virtual void OnEnabledChanged(bool enabled) OVERRIDE;
43
44 private:
45  // Used to DCHECK that we are called on the correct thread.
46  base::ThreadChecker thread_checker_;
47
48  scoped_refptr<webrtc::VideoSourceInterface> video_source_;
49  scoped_refptr<webrtc::VideoTrackInterface> video_track_;
50
51  blink::WebMediaStreamTrack web_track_;
52
53  // |capture_adapter_| is owned by |video_source_|
54  WebRtcVideoCapturerAdapter* capture_adapter_;
55
56  DISALLOW_COPY_AND_ASSIGN (WebRtcVideoTrackAdapter);
57};
58
59}  // namespace content
60
61#endif  // CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_TRACK_ADAPTER_H_
62