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/webrtc/peer_connection_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
19class MediaStreamVideoTrack;
20
21// WebRtcVideoTrackAdapter is an adapter between a
22// content::MediaStreamVideoTrack object and a webrtc VideoTrack that is
23// currently sent on a PeerConnection.
24// The responsibility of the class is to create and own a representation of a
25// webrtc VideoTrack that can be added and removed from a RTCPeerConnection.
26// An instance of WebRtcVideoTrackAdapter is created when a VideoTrack is
27// added to an RTCPeerConnection object.
28// Instances of this class is owned by the WebRtcMediaStreamAdapter object that
29// created it.
30class WebRtcVideoTrackAdapter : public MediaStreamVideoSink {
31 public:
32  WebRtcVideoTrackAdapter(const blink::WebMediaStreamTrack& track,
33                          PeerConnectionDependencyFactory* factory);
34  virtual ~WebRtcVideoTrackAdapter();
35
36  webrtc::VideoTrackInterface* webrtc_video_track() {
37    return video_track_.get();
38  }
39
40 protected:
41  // Implementation of MediaStreamSink.
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::VideoTrackInterface> video_track_;
49  blink::WebMediaStreamTrack web_track_;
50
51  class WebRtcVideoSourceAdapter;
52  scoped_refptr<WebRtcVideoSourceAdapter> source_adapter_;
53
54  DISALLOW_COPY_AND_ASSIGN(WebRtcVideoTrackAdapter);
55};
56
57}  // namespace content
58
59#endif  // CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_TRACK_ADAPTER_H_
60