1 /* 2 * libjingle 3 * Copyright 2012 Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef TALK_APP_WEBRTC_VIDEOSOURCEINTERFACE_H_ 29 #define TALK_APP_WEBRTC_VIDEOSOURCEINTERFACE_H_ 30 31 #include "talk/app/webrtc/mediastreaminterface.h" 32 #include "talk/media/base/mediachannel.h" 33 34 namespace webrtc { 35 36 // VideoSourceInterface is a reference counted source used for VideoTracks. 37 // The same source can be used in multiple VideoTracks. 38 // The methods are only supposed to be called by the PeerConnection 39 // implementation. 40 class VideoSourceInterface : public MediaSourceInterface { 41 public: 42 // Get access to the source implementation of cricket::VideoCapturer. 43 // This can be used for receiving frames and state notifications. 44 // But it should not be used for starting or stopping capturing. 45 virtual cricket::VideoCapturer* GetVideoCapturer() = 0; 46 47 // Stop the video capturer. 48 virtual void Stop() = 0; 49 virtual void Restart() = 0; 50 51 // Adds |output| to the source to receive frames. 52 virtual void AddSink(cricket::VideoRenderer* output) = 0; 53 virtual void RemoveSink(cricket::VideoRenderer* output) = 0; 54 virtual const cricket::VideoOptions* options() const = 0; 55 virtual cricket::VideoRenderer* FrameInput() = 0; 56 57 protected: ~VideoSourceInterface()58 virtual ~VideoSourceInterface() {} 59 }; 60 61 } // namespace webrtc 62 63 #endif // TALK_APP_WEBRTC_VIDEOSOURCEINTERFACE_H_ 64