webrtc/talk/media/devices/carbonvideorenderer.h

// libjingle
// Copyright 2011 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,
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//
// Definition of class CarbonVideoRenderer that implements the abstract class
// cricket::VideoRenderer via Carbon.

#ifndef TALK_MEDIA_DEVICES_CARBONVIDEORENDERER_H_
#define TALK_MEDIA_DEVICES_CARBONVIDEORENDERER_H_

#include <Carbon/Carbon.h>

#include "webrtc/base/criticalsection.h"
#include "webrtc/base/scoped_ptr.h"
#include "talk/media/base/videorenderer.h"

namespace cricket {

class CarbonVideoRenderer : public VideoRenderer {
 public:
  CarbonVideoRenderer(int x, int y);
  virtual ~CarbonVideoRenderer();

  // Implementation of pure virtual methods of VideoRenderer.
  // These two methods may be executed in different threads.
  // SetSize is called before RenderFrame.
  virtual bool SetSize(int width, int height, int reserved);
  virtual bool RenderFrame(const VideoFrame* frame);

  // Needs to be called on the main thread.
  bool Initialize();

 private:
  bool DrawFrame();

  static OSStatus DrawEventHandler(EventHandlerCallRef handler,
                                   EventRef event,
                                   void* data);
  rtc::scoped_ptr<uint8[]> image_;
  rtc::CriticalSection image_crit_;
  int image_width_;
  int image_height_;
  int x_;
  int y_;
  CGImageRef image_ref_;
  WindowRef window_ref_;
};

}  // namespace cricket

#endif  // TALK_MEDIA_DEVICES_CARBONVIDEORENDERER_H_