/* * libjingle * Copyright 2012, Google Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ // This file contains the class CaptureRenderAdapter. The class connects a // VideoCapturer to any number of VideoRenders such that the former feeds the // latter. // CaptureRenderAdapter is Thread-unsafe. This means that none of its APIs may // be called concurrently. #ifndef TALK_MEDIA_BASE_CAPTURERENDERADAPTER_H_ #define TALK_MEDIA_BASE_CAPTURERENDERADAPTER_H_ #include <vector> #include "talk/base/criticalsection.h" #include "talk/base/sigslot.h" #include "talk/media/base/videocapturer.h" namespace cricket { class VideoCapturer; class VideoProcessor; class VideoRenderer; class CaptureRenderAdapter : public sigslot::has_slots<> { public: static CaptureRenderAdapter* Create(VideoCapturer* video_capturer); ~CaptureRenderAdapter(); bool AddRenderer(VideoRenderer* video_renderer); bool RemoveRenderer(VideoRenderer* video_renderer); VideoCapturer* video_capturer() { return video_capturer_; } private: struct VideoRendererInfo { explicit VideoRendererInfo(VideoRenderer* r) : renderer(r), render_width(0), render_height(0) { } VideoRenderer* renderer; size_t render_width; size_t render_height; }; // Just pointers since ownership is not handed over to this class. typedef std::vector<VideoRendererInfo> VideoRenderers; explicit CaptureRenderAdapter(VideoCapturer* video_capturer); void Init(); // Callback for frames received from the capturer. void OnVideoFrame(VideoCapturer* capturer, const VideoFrame* video_frame); void MaybeSetRenderingSize(const VideoFrame* frame); bool IsRendererRegistered(const VideoRenderer& video_renderer) const; VideoRenderers video_renderers_; VideoCapturer* video_capturer_; // Critical section synchronizing the capture thread. mutable talk_base::CriticalSection capture_crit_; }; } // namespace cricket #endif // TALK_MEDIA_BASE_CAPTURERENDERADAPTER_H_