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      1 /*
      2  * libjingle
      3  * Copyright 2012, Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 
     29 #ifndef PEERCONNECTION_SAMPLES_CLIENT_LINUX_MAIN_WND_H_
     30 #define PEERCONNECTION_SAMPLES_CLIENT_LINUX_MAIN_WND_H_
     31 
     32 #include "talk/examples/peerconnection/client/main_wnd.h"
     33 #include "talk/examples/peerconnection/client/peer_connection_client.h"
     34 
     35 // Forward declarations.
     36 typedef struct _GtkWidget GtkWidget;
     37 typedef union _GdkEvent GdkEvent;
     38 typedef struct _GdkEventKey GdkEventKey;
     39 typedef struct _GtkTreeView GtkTreeView;
     40 typedef struct _GtkTreePath GtkTreePath;
     41 typedef struct _GtkTreeViewColumn GtkTreeViewColumn;
     42 
     43 // Implements the main UI of the peer connection client.
     44 // This is functionally equivalent to the MainWnd class in the Windows
     45 // implementation.
     46 class GtkMainWnd : public MainWindow {
     47  public:
     48   GtkMainWnd(const char* server, int port, bool autoconnect, bool autocall);
     49   ~GtkMainWnd();
     50 
     51   virtual void RegisterObserver(MainWndCallback* callback);
     52   virtual bool IsWindow();
     53   virtual void SwitchToConnectUI();
     54   virtual void SwitchToPeerList(const Peers& peers);
     55   virtual void SwitchToStreamingUI();
     56   virtual void MessageBox(const char* caption, const char* text,
     57                           bool is_error);
     58   virtual MainWindow::UI current_ui();
     59   virtual void StartLocalRenderer(webrtc::VideoTrackInterface* local_video);
     60   virtual void StopLocalRenderer();
     61   virtual void StartRemoteRenderer(webrtc::VideoTrackInterface* remote_video);
     62   virtual void StopRemoteRenderer();
     63 
     64   virtual void QueueUIThreadCallback(int msg_id, void* data);
     65 
     66   // Creates and shows the main window with the |Connect UI| enabled.
     67   bool Create();
     68 
     69   // Destroys the window.  When the window is destroyed, it ends the
     70   // main message loop.
     71   bool Destroy();
     72 
     73   // Callback for when the main window is destroyed.
     74   void OnDestroyed(GtkWidget* widget, GdkEvent* event);
     75 
     76   // Callback for when the user clicks the "Connect" button.
     77   void OnClicked(GtkWidget* widget);
     78 
     79   // Callback for keystrokes.  Used to capture Esc and Return.
     80   void OnKeyPress(GtkWidget* widget, GdkEventKey* key);
     81 
     82   // Callback when the user double clicks a peer in order to initiate a
     83   // connection.
     84   void OnRowActivated(GtkTreeView* tree_view, GtkTreePath* path,
     85                       GtkTreeViewColumn* column);
     86 
     87   void OnRedraw();
     88 
     89  protected:
     90   class VideoRenderer : public webrtc::VideoRendererInterface {
     91    public:
     92     VideoRenderer(GtkMainWnd* main_wnd,
     93                   webrtc::VideoTrackInterface* track_to_render);
     94     virtual ~VideoRenderer();
     95 
     96     // VideoRendererInterface implementation
     97     virtual void SetSize(int width, int height);
     98     virtual void RenderFrame(const cricket::VideoFrame* frame);
     99 
    100     const uint8* image() const {
    101       return image_.get();
    102     }
    103 
    104     int width() const {
    105       return width_;
    106     }
    107 
    108     int height() const {
    109       return height_;
    110     }
    111 
    112    protected:
    113     talk_base::scoped_ptr<uint8[]> image_;
    114     int width_;
    115     int height_;
    116     GtkMainWnd* main_wnd_;
    117     talk_base::scoped_refptr<webrtc::VideoTrackInterface> rendered_track_;
    118   };
    119 
    120  protected:
    121   GtkWidget* window_;  // Our main window.
    122   GtkWidget* draw_area_;  // The drawing surface for rendering video streams.
    123   GtkWidget* vbox_;  // Container for the Connect UI.
    124   GtkWidget* server_edit_;
    125   GtkWidget* port_edit_;
    126   GtkWidget* peer_list_;  // The list of peers.
    127   MainWndCallback* callback_;
    128   std::string server_;
    129   std::string port_;
    130   bool autoconnect_;
    131   bool autocall_;
    132   talk_base::scoped_ptr<VideoRenderer> local_renderer_;
    133   talk_base::scoped_ptr<VideoRenderer> remote_renderer_;
    134   talk_base::scoped_ptr<uint8> draw_buffer_;
    135   int draw_buffer_size_;
    136 };
    137 
    138 #endif  // PEERCONNECTION_SAMPLES_CLIENT_LINUX_MAIN_WND_H_
    139