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