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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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