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_MEDIA_STREAM_REMOTE_VIDEO_SOURCE_H_ 6 #define CONTENT_RENDERER_MEDIA_WEBRTC_MEDIA_STREAM_REMOTE_VIDEO_SOURCE_H_ 7 8 #include "base/threading/thread_checker.h" 9 #include "content/common/content_export.h" 10 #include "content/renderer/media/media_stream_video_source.h" 11 #include "third_party/WebKit/public/platform/WebMediaStreamSource.h" 12 #include "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h" 13 14 namespace content { 15 16 // MediaStreamRemoteVideoSource implements the MediaStreamVideoSource interface 17 // for video tracks received on a PeerConnection. The purpose of the class is 18 // to make sure there is no difference between a video track where the source is 19 // a local source and a video track where the source is a remote video track. 20 class CONTENT_EXPORT MediaStreamRemoteVideoSource 21 : public MediaStreamVideoSource, 22 NON_EXPORTED_BASE(public webrtc::ObserverInterface) { 23 public: 24 explicit MediaStreamRemoteVideoSource( 25 webrtc::VideoTrackInterface* remote_track); 26 virtual ~MediaStreamRemoteVideoSource(); 27 28 protected: 29 // Implements MediaStreamVideoSource. 30 virtual void GetCurrentSupportedFormats( 31 int max_requested_width, 32 int max_requested_height, 33 double max_requested_frame_rate, 34 const VideoCaptureDeviceFormatsCB& callback) OVERRIDE; 35 36 virtual void StartSourceImpl( 37 const media::VideoCaptureFormat& format, 38 const VideoCaptureDeliverFrameCB& frame_callback) OVERRIDE; 39 40 virtual void StopSourceImpl() OVERRIDE; 41 42 // Used by tests to test that a frame can be received and that the 43 // MediaStreamRemoteVideoSource behaves as expected. 44 webrtc::VideoRendererInterface* RenderInterfaceForTest(); 45 46 private: 47 // webrtc::ObserverInterface implementation. 48 virtual void OnChanged() OVERRIDE; 49 50 scoped_refptr<webrtc::VideoTrackInterface> remote_track_; 51 webrtc::MediaStreamTrackInterface::TrackState last_state_; 52 53 // Internal class used for receiving frames from the webrtc track on a 54 // libjingle thread and forward it to the IO-thread. 55 class RemoteVideoSourceDelegate; 56 scoped_refptr<RemoteVideoSourceDelegate> delegate_; 57 58 // Bound to the render thread. 59 base::ThreadChecker thread_checker_; 60 61 DISALLOW_COPY_AND_ASSIGN(MediaStreamRemoteVideoSource); 62 }; 63 64 } // namespace content 65 66 #endif // CONTENT_RENDERER_MEDIA_WEBRTC_MEDIA_STREAM_REMOTE_VIDEO_SOURCE_H_ 67