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| 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 <set> | |
| 32 | |
| 33 #include "talk/app/webrtc/mediastreaminterface.h" | |
| 34 #include "talk/media/base/videorenderer.h" | |
| 35 #include "webrtc/base/criticalsection.h" | |
| 36 #include "webrtc/base/scoped_ptr.h" | |
| 37 | |
| 38 namespace webrtc { | |
| 39 | |
| 40 // Class used for rendering cricket::VideoFrames to multiple renderers of type | |
| 41 // VideoRendererInterface. | |
| 42 // Each VideoTrack owns a VideoTrackRenderers instance. | |
| 43 // The class is thread safe. Rendering to the added VideoRendererInterfaces is | |
| 44 // done on the same thread as the cricket::VideoRenderer. | |
| 45 class VideoTrackRenderers : public cricket::VideoRenderer { | |
| 46 public: | |
| 47 VideoTrackRenderers(); | |
| 48 ~VideoTrackRenderers(); | |
| 49 | |
| 50 // Implements cricket::VideoRenderer. If the track is disabled, | |
| 51 // incoming frames are replaced by black frames. | |
| 52 virtual bool RenderFrame(const cricket::VideoFrame* frame); | |
| 53 | |
| 54 void AddRenderer(VideoRendererInterface* renderer); | |
| 55 void RemoveRenderer(VideoRendererInterface* renderer); | |
| 56 void SetEnabled(bool enable); | |
| 57 | |
| 58 private: | |
| 59 // Pass the frame on to to each registered renderer. Requires | |
| 60 // critical_section_ already locked. | |
| 61 void RenderFrameToRenderers(const cricket::VideoFrame* frame); | |
| 62 | |
| 63 bool enabled_; | |
| 64 std::set<VideoRendererInterface*> renderers_; | |
| 65 | |
| 66 rtc::CriticalSection critical_section_; // Protects the above variables | |
| 67 }; | |
| 68 | |
| 69 } // namespace webrtc | |
| 70 | |
| 71 #endif // TALK_APP_WEBRTC_VIDEOTRACKRENDERERS_H_ | |
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