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      1 // libjingle
      2 // Copyright 2011 Google Inc.
      3 //
      4 // Redistribution and use in source and binary forms, with or without
      5 // modification, are permitted provided that the following conditions are met:
      6 //
      7 //  1. Redistributions of source code must retain the above copyright notice,
      8 //     this list of conditions and the following disclaimer.
      9 //  2. Redistributions in binary form must reproduce the above copyright notice,
     10 //     this list of conditions and the following disclaimer in the documentation
     11 //     and/or other materials provided with the distribution.
     12 //  3. The name of the author may not be used to endorse or promote products
     13 //     derived from this software without specific prior written permission.
     14 //
     15 // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     16 // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     17 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     18 // EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     19 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     20 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     21 // OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     22 // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     23 // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     24 // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25 //
     26 // Definition of class CarbonVideoRenderer that implements the abstract class
     27 // cricket::VideoRenderer via Carbon.
     28 
     29 #ifndef TALK_MEDIA_DEVICES_CARBONVIDEORENDERER_H_
     30 #define TALK_MEDIA_DEVICES_CARBONVIDEORENDERER_H_
     31 
     32 #include <Carbon/Carbon.h>
     33 
     34 #include "talk/base/criticalsection.h"
     35 #include "talk/base/scoped_ptr.h"
     36 #include "talk/media/base/videorenderer.h"
     37 
     38 namespace cricket {
     39 
     40 class CarbonVideoRenderer : public VideoRenderer {
     41  public:
     42   CarbonVideoRenderer(int x, int y);
     43   virtual ~CarbonVideoRenderer();
     44 
     45   // Implementation of pure virtual methods of VideoRenderer.
     46   // These two methods may be executed in different threads.
     47   // SetSize is called before RenderFrame.
     48   virtual bool SetSize(int width, int height, int reserved);
     49   virtual bool RenderFrame(const VideoFrame* frame);
     50 
     51   // Needs to be called on the main thread.
     52   bool Initialize();
     53 
     54  private:
     55   bool DrawFrame();
     56 
     57   static OSStatus DrawEventHandler(EventHandlerCallRef handler,
     58                                    EventRef event,
     59                                    void* data);
     60   talk_base::scoped_ptr<uint8[]> image_;
     61   talk_base::CriticalSection image_crit_;
     62   int image_width_;
     63   int image_height_;
     64   int x_;
     65   int y_;
     66   CGImageRef image_ref_;
     67   WindowRef window_ref_;
     68 };
     69 
     70 }  // namespace cricket
     71 
     72 #endif  // TALK_MEDIA_DEVICES_CARBONVIDEORENDERER_H_
     73