media_stream_video_sink.h revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7
1// Copyright 2013 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_PUBLIC_RENDERER_MEDIA_STREAM_VIDEO_SINK_H_ 6#define CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_VIDEO_SINK_H_ 7 8#include "base/compiler_specific.h" 9#include "base/memory/ref_counted.h" 10#include "content/common/content_export.h" 11#include "content/public/renderer/media_stream_sink.h" 12 13namespace media { 14class VideoFrame; 15} 16 17namespace blink { 18class WebMediaStreamTrack; 19} 20 21namespace content { 22 23// MediaStreamVideoSink is an interface used for receiving video frames from a 24// Video Stream Track or a Video Source. 25// http://dev.w3.org/2011/webrtc/editor/getusermedia.html 26// All methods calls will be done from the main render thread. 27class CONTENT_EXPORT MediaStreamVideoSink : public MediaStreamSink { 28 public: 29 // An implementation of MediaStreamVideoSink should call AddToVideoTrack when 30 // it is ready to receive data from a video track. Before the implementation 31 // is destroyed, RemoveFromVideoTrack must be called. 32 // Calls to these methods must be done on the main render thread. 33 static void AddToVideoTrack(MediaStreamVideoSink* sink, 34 const blink::WebMediaStreamTrack& track); 35 static void RemoveFromVideoTrack(MediaStreamVideoSink* sink, 36 const blink::WebMediaStreamTrack& track); 37 38 virtual void OnVideoFrame(const scoped_refptr<media::VideoFrame>& frame) = 0; 39 40 protected: 41 virtual ~MediaStreamVideoSink() {} 42}; 43 44 45} // namespace content 46 47#endif // CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_VIDEO_SINK_H_ 48