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/*
* 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/media/base/videocapturer.h"
#include "webrtc/base/criticalsection.h"
#include "webrtc/base/sigslot.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 rtc::CriticalSection capture_crit_;
};
} // namespace cricket
#endif // TALK_MEDIA_BASE_CAPTURERENDERADAPTER_H_
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