1 // libjingle 2 // Copyright 2004 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 GtkVideoRenderer that implements the abstract class 27 // cricket::VideoRenderer via GTK. 28 29 #ifndef TALK_MEDIA_DEVICES_GTKVIDEORENDERER_H_ 30 #define TALK_MEDIA_DEVICES_GTKVIDEORENDERER_H_ 31 32 #include "talk/base/basictypes.h" 33 #include "talk/base/scoped_ptr.h" 34 #include "talk/media/base/videorenderer.h" 35 36 typedef struct _GtkWidget GtkWidget; // forward declaration, defined in gtk.h 37 38 namespace cricket { 39 40 class GtkVideoRenderer : public VideoRenderer { 41 public: 42 GtkVideoRenderer(int x, int y); 43 virtual ~GtkVideoRenderer(); 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 private: 52 // Initialize the attributes when the first frame arrives. 53 bool Initialize(int width, int height); 54 // Pump the Gtk event loop until there are no events left. 55 void Pump(); 56 // Check if the window has been closed. 57 bool IsClosed() const; 58 59 talk_base::scoped_ptr<uint8[]> image_; 60 GtkWidget* window_; 61 GtkWidget* draw_area_; 62 // The initial position of the window. 63 int initial_x_; 64 int initial_y_; 65 }; 66 67 } // namespace cricket 68 69 #endif // TALK_MEDIA_DEVICES_GTKVIDEORENDERER_H_ 70