doc/libvlc/win_player.c

   1 /* compile: cc win_player.c -o win_player.exe -L<path/libvlc> -lvlc */
   2
   3 #include <windows.h>
   4 #include <assert.h>
   5
   6 #include <vlc/vlc.h>
   7
   8 #define SCREEN_WIDTH  1500
   9 #define SCREEN_HEIGHT  900
  10
  11 struct vlc_context
  12 {
  13     libvlc_instance_t     *p_libvlc;
  14     libvlc_media_player_t *p_mediaplayer;
  15 };
  16
  17
  18 static LRESULT CALLBACK WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
  19 {
  20     if( message == WM_CREATE )
  21     {
  22         /* Store p_mediaplayer for future use */
  23         CREATESTRUCT *c = (CREATESTRUCT *)lParam;
  24         SetWindowLongPtr( hWnd, GWLP_USERDATA, (LONG_PTR)c->lpCreateParams );
  25         return 0;
  26     }
  27
  28     LONG_PTR p_user_data = GetWindowLongPtr( hWnd, GWLP_USERDATA );
  29     if( p_user_data == 0 )
  30         return DefWindowProc(hWnd, message, wParam, lParam);
  31     struct vlc_context *ctx = (struct vlc_context *)p_user_data;
  32
  33     switch(message)
  34     {
  35         case WM_DESTROY:
  36             PostQuitMessage(0);
  37             return 0;
  38         case WM_DROPFILES:
  39             {
  40                 HDROP hDrop = (HDROP)wParam;
  41                 char file_path[MAX_PATH];
  42                 libvlc_media_player_stop_async( ctx->p_mediaplayer );
  43
  44                 if (DragQueryFile(hDrop, 0, file_path, sizeof(file_path)))
  45                 {
  46                     libvlc_media_t *p_media = libvlc_media_new_path( ctx->p_libvlc, file_path );
  47                     libvlc_media_t *p_old_media = libvlc_media_player_get_media( ctx->p_mediaplayer );
  48                     libvlc_media_player_set_media( ctx->p_mediaplayer, p_media );
  49                     libvlc_media_release( p_old_media );
  50
  51                     libvlc_media_player_play( ctx->p_mediaplayer );
  52                 }
  53                 DragFinish(hDrop);
  54             }
  55             return 0;
  56     }
  57
  58     return DefWindowProc (hWnd, message, wParam, lParam);
  59 }
  60
  61 int WINAPI WinMain(HINSTANCE hInstance,
  62                    HINSTANCE hPrevInstance,
  63                    LPSTR lpCmdLine,
  64                    int nCmdShow)
  65 {
  66     WNDCLASSEX wc;
  67     char *file_path;
  68     struct vlc_context Context;
  69     libvlc_media_t *p_media;
  70     (void)hPrevInstance;
  71     HWND hWnd;
  72
  73     /* remove "" around the given path */
  74     if (lpCmdLine[0] == '"')
  75     {
  76         file_path = strdup( lpCmdLine+1 );
  77         if (file_path[strlen(file_path)-1] == '"')
  78             file_path[strlen(file_path)-1] = '\0';
  79     }
  80     else
  81         file_path = strdup( lpCmdLine );
  82
  83     Context.p_libvlc = libvlc_new( 0, NULL );
  84     p_media = libvlc_media_new_path( Context.p_libvlc, file_path );
  85     free( file_path );
  86     Context.p_mediaplayer = libvlc_media_player_new_from_media( p_media );
  87
  88     ZeroMemory(&wc, sizeof(WNDCLASSEX));
  89
  90     wc.cbSize = sizeof(WNDCLASSEX);
  91     wc.style = CS_HREDRAW | CS_VREDRAW;
  92     wc.lpfnWndProc = WindowProc;
  93     wc.hInstance = hInstance;
  94     wc.hCursor = LoadCursor(NULL, IDC_ARROW);
  95     wc.lpszClassName = "WindowClass";
  96
  97     RegisterClassEx(&wc);
  98
  99     RECT wr = {0, 0, SCREEN_WIDTH, SCREEN_HEIGHT};
 100     AdjustWindowRect(&wr, WS_OVERLAPPEDWINDOW, FALSE);
 101
 102     hWnd = CreateWindowEx(0,
 103                           "WindowClass",
 104                           "libvlc Demo app",
 105                           WS_OVERLAPPEDWINDOW,
 106                           CW_USEDEFAULT, CW_USEDEFAULT,
 107                           wr.right - wr.left,
 108                           wr.bottom - wr.top,
 109                           NULL,
 110                           NULL,
 111                           hInstance,
 112                           &Context);
 113     DragAcceptFiles(hWnd, TRUE);
 114
 115     libvlc_media_player_set_hwnd(Context.p_mediaplayer, hWnd);
 116
 117     ShowWindow(hWnd, nCmdShow);
 118
 119     libvlc_media_player_play( Context.p_mediaplayer );
 120
 121     MSG msg;
 122     while (GetMessage(&msg, NULL, 0, 0))
 123     {
 124         TranslateMessage(&msg);
 125         DispatchMessage(&msg);
 126
 127         if(msg.message == WM_QUIT)
 128             break;
 129     }
 130
 131     libvlc_media_player_stop_async( Context.p_mediaplayer );
 132
 133     libvlc_media_release( libvlc_media_player_get_media( Context.p_mediaplayer ) );
 134     libvlc_media_player_release( Context.p_mediaplayer );
 135     libvlc_release( Context.p_libvlc );
 136
 137     return msg.wParam;
 138 }