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_VIDEOTRACKRENDERERS_H_ 29 #define TALK_APP_WEBRTC_VIDEOTRACKRENDERERS_H_ 30 31 #include <vector> 32 33 #include "talk/app/webrtc/mediastreaminterface.h" 34 #include "talk/media/base/videorenderer.h" 35 #include "webrtc/base/criticalsection.h" 36 37 namespace webrtc { 38 39 // Class used for rendering cricket::VideoFrames to multiple renderers of type 40 // VideoRendererInterface. 41 // Each VideoTrack owns a VideoTrackRenderers instance. 42 // The class is thread safe. Rendering to the added VideoRendererInterfaces is 43 // done on the same thread as the cricket::VideoRenderer. 44 class VideoTrackRenderers : public cricket::VideoRenderer { 45 public: 46 VideoTrackRenderers(); 47 ~VideoTrackRenderers(); 48 49 // Implements cricket::VideoRenderer 50 virtual bool SetSize(int width, int height, int reserved); 51 virtual bool RenderFrame(const cricket::VideoFrame* frame); 52 53 void AddRenderer(VideoRendererInterface* renderer); 54 void RemoveRenderer(VideoRendererInterface* renderer); 55 void SetEnabled(bool enable); 56 57 private: 58 struct RenderObserver { RenderObserverRenderObserver59 explicit RenderObserver(VideoRendererInterface* renderer) 60 : renderer_(renderer), 61 size_set_(false) { 62 } 63 VideoRendererInterface* renderer_; 64 bool size_set_; 65 }; 66 67 int width_; 68 int height_; 69 bool enabled_; 70 std::vector<RenderObserver> renderers_; 71 72 rtc::CriticalSection critical_section_; // Protects the above variables 73 }; 74 75 } // namespace webrtc 76 77 #endif // TALK_APP_WEBRTC_VIDEOTRACKRENDERERS_H_ 78