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28 #ifndef TALK_APP_WEBRTC_VIDEOTRACKRENDERERS_H_
29 #define TALK_APP_WEBRTC_VIDEOTRACKRENDERERS_H_
33 #include "talk/app/webrtc/mediastreaminterface.h"
34 #include "talk/media/base/videorenderer.h"
35 #include "webrtc/base/criticalsection.h"
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 {
46 VideoTrackRenderers();
47 ~VideoTrackRenderers();
49 // Implements cricket::VideoRenderer
50 virtual bool SetSize(int width, int height, int reserved);
51 virtual bool RenderFrame(const cricket::VideoFrame* frame);
53 void AddRenderer(VideoRendererInterface* renderer);
54 void RemoveRenderer(VideoRendererInterface* renderer);
55 void SetEnabled(bool enable);
58 struct RenderObserver {
59 explicit RenderObserver(VideoRendererInterface* renderer)
60 : renderer_(renderer),
63 VideoRendererInterface* renderer_;
70 std::vector<RenderObserver> renderers_;
72 rtc::CriticalSection critical_section_; // Protects the above variables
77 #endif // TALK_APP_WEBRTC_VIDEOTRACKRENDERERS_H_