git.sesse.net Git - vlc/blob - modules/video_output/directx/glwin32.c

   1 /*****************************************************************************\r
   2  * glwin32.c: Windows OpenGL provider\r
   3  *****************************************************************************\r
   4  * Copyright (C) 2001-2004 VideoLAN\r
   5  * $Id$\r
   6  *\r
   7  * Authors: Gildas Bazin <gbazin@videolan.org>\r
   8  *\r
   9  * This program is free software; you can redistribute it and/or modify\r
  10  * it under the terms of the GNU General Public License as published by\r
  11  * the Free Software Foundation; either version 2 of the License, or\r
  12  * (at your option) any later version.\r
  13  *\r
  14  * This program is distributed in the hope that it will be useful,\r
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  17  * GNU General Public License for more details.\r
  18  *\r
  19  * You should have received a copy of the GNU General Public License\r
  20  * along with this program; if not, write to the Free Software\r
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.\r
  22  *****************************************************************************/\r
  23 \r
  24 #include <errno.h>                                                 /* ENOMEM */\r
  25 #include <stdlib.h>                                                /* free() */\r
  26 #include <string.h>                                            /* strerror() */\r
  27 \r
  28 #include <vlc/vlc.h>\r
  29 #include <vlc/intf.h>\r
  30 #include <vlc/vout.h>\r
  31 \r
  32 #include <windows.h>\r
  33 #include <ddraw.h>\r
  34 #include <commctrl.h>\r
  35 \r
  36 #include <multimon.h>\r
  37 #undef GetSystemMetrics\r
  38 \r
  39 #ifndef MONITOR_DEFAULTTONEAREST\r
  40 #   define MONITOR_DEFAULTTONEAREST 2\r
  41 #endif\r
  42 \r
  43 #include <GL/gl.h>\r
  44 \r
  45 #include "vout.h"\r
  46 \r
  47 /*****************************************************************************\r
  48  * Local prototypes.\r
  49  *****************************************************************************/\r
  50 static int  OpenVideo  ( vlc_object_t * );\r
  51 static void CloseVideo ( vlc_object_t * );\r
  52 \r
  53 static int  Init      ( vout_thread_t * );\r
  54 static void End       ( vout_thread_t * );\r
  55 static int  Manage    ( vout_thread_t * );\r
  56 static void GLSwapBuffers( vout_thread_t * );\r
  57 \r
  58 /*****************************************************************************\r
  59  * Module descriptor\r
  60  *****************************************************************************/\r
  61 vlc_module_begin();\r
  62     set_description( _("Win32 OpenGL provider") );\r
  63     set_capability( "opengl provider", 100 );\r
  64     add_shortcut( "glwin32" );\r
  65     set_callbacks( OpenVideo, CloseVideo );\r
  66 vlc_module_end();\r
  67 \r
  68 #if 0 /* FIXME */\r
  69     /* check if we registered a window class because we need to\r
  70      * unregister it */\r
  71     WNDCLASS wndclass;\r
  72     if( GetClassInfo( GetModuleHandle(NULL), "VLC DirectX", &wndclass ) )\r
  73         UnregisterClass( "VLC DirectX", GetModuleHandle(NULL) );\r
  74 #endif\r
  75 \r
  76 /*****************************************************************************\r
  77  * OpenVideo: allocate OpenGL provider\r
  78  *****************************************************************************\r
  79  * This function creates and initializes a video window.\r
  80  *****************************************************************************/\r
  81 static int OpenVideo( vlc_object_t *p_this )\r
  82 {\r
  83     vout_thread_t * p_vout = (vout_thread_t *)p_this;\r
  84     vlc_value_t val;\r
  85 \r
  86     /* Allocate structure */\r
  87     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );\r
  88     if( p_vout->p_sys == NULL )\r
  89     {\r
  90         msg_Err( p_vout, "out of memory" );\r
  91         return VLC_ENOMEM;\r
  92     }\r
  93     memset( p_vout->p_sys, 0, sizeof( vout_sys_t ) );\r
  94 \r
  95     /* Initialisations */\r
  96     p_vout->pf_init = Init;\r
  97     p_vout->pf_end = End;\r
  98     p_vout->pf_manage = Manage;\r
  99     p_vout->pf_swap = GLSwapBuffers;\r
 100 \r
 101     p_vout->p_sys->p_ddobject = NULL;\r
 102     p_vout->p_sys->p_display = NULL;\r
 103     p_vout->p_sys->p_current_surface = NULL;\r
 104     p_vout->p_sys->p_clipper = NULL;\r
 105     p_vout->p_sys->hwnd = p_vout->p_sys->hvideownd = NULL;\r
 106     p_vout->p_sys->hparent = NULL;\r
 107     p_vout->p_sys->i_changes = 0;\r
 108     p_vout->p_sys->b_wallpaper = 0;\r
 109     vlc_mutex_init( p_vout, &p_vout->p_sys->lock );\r
 110     SetRectEmpty( &p_vout->p_sys->rect_display );\r
 111     SetRectEmpty( &p_vout->p_sys->rect_parent );\r
 112 \r
 113     var_Create( p_vout, "video-title", VLC_VAR_STRING | VLC_VAR_DOINHERIT );\r
 114 \r
 115     p_vout->p_sys->b_cursor_hidden = 0;\r
 116     p_vout->p_sys->i_lastmoved = mdate();\r
 117 \r
 118     /* Set main window's size */\r
 119     p_vout->p_sys->i_window_width = p_vout->i_window_width;\r
 120     p_vout->p_sys->i_window_height = p_vout->i_window_height;\r
 121 \r
 122     /* Create the DirectXEventThread, this thread is created by us to isolate\r
 123      * the Win32 PeekMessage function calls. We want to do this because\r
 124      * Windows can stay blocked inside this call for a long time, and when\r
 125      * this happens it thus blocks vlc's video_output thread.\r
 126      * DirectXEventThread will take care of the creation of the video\r
 127      * window (because PeekMessage has to be called from the same thread which\r
 128      * created the window). */\r
 129     msg_Dbg( p_vout, "creating DirectXEventThread" );\r
 130     p_vout->p_sys->p_event =\r
 131         vlc_object_create( p_vout, sizeof(event_thread_t) );\r
 132     p_vout->p_sys->p_event->p_vout = p_vout;\r
 133     if( vlc_thread_create( p_vout->p_sys->p_event, "DirectX Events Thread",\r
 134                            DirectXEventThread, 0, 1 ) )\r
 135     {\r
 136         msg_Err( p_vout, "cannot create DirectXEventThread" );\r
 137         vlc_object_destroy( p_vout->p_sys->p_event );\r
 138         p_vout->p_sys->p_event = NULL;\r
 139         goto error;\r
 140     }\r
 141 \r
 142     if( p_vout->p_sys->p_event->b_error )\r
 143     {\r
 144         msg_Err( p_vout, "DirectXEventThread failed" );\r
 145         goto error;\r
 146     }\r
 147 \r
 148     vlc_object_attach( p_vout->p_sys->p_event, p_vout );\r
 149 \r
 150     msg_Dbg( p_vout, "DirectXEventThread running" );\r
 151 \r
 152     /* Variable to indicate if the window should be on top of others */\r
 153     /* Trigger a callback right now */\r
 154     var_Get( p_vout, "video-on-top", &val );\r
 155     var_Set( p_vout, "video-on-top", val );\r
 156 \r
 157     return VLC_SUCCESS;\r
 158 \r
 159  error:\r
 160     CloseVideo( VLC_OBJECT(p_vout) );\r
 161     return VLC_EGENERIC;\r
 162 }\r
 163 \r
 164 /*****************************************************************************\r
 165  * Init: initialize video thread output method\r
 166  *****************************************************************************/\r
 167 static int Init( vout_thread_t *p_vout )\r
 168 {\r
 169     PIXELFORMATDESCRIPTOR pfd;\r
 170     int iFormat;\r
 171 \r
 172     /* Change the window title bar text */\r
 173     PostMessage( p_vout->p_sys->hwnd, WM_VLC_CHANGE_TEXT, 0, 0 );\r
 174 \r
 175     p_vout->p_sys->hGLDC = GetDC( p_vout->p_sys->hvideownd );\r
 176 \r
 177     /* Set the pixel format for the DC */\r
 178     memset( &pfd, 0, sizeof( pfd ) );\r
 179     pfd.nSize = sizeof( pfd );\r
 180     pfd.nVersion = 1;\r
 181     pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;\r
 182     pfd.iPixelType = PFD_TYPE_RGBA;\r
 183     pfd.cColorBits = 24;\r
 184     pfd.cDepthBits = 16;\r
 185     pfd.iLayerType = PFD_MAIN_PLANE;\r
 186     iFormat = ChoosePixelFormat( p_vout->p_sys->hGLDC, &pfd );\r
 187     SetPixelFormat( p_vout->p_sys->hGLDC, iFormat, &pfd );\r
 188 \r
 189     /* Create and enable the render context */\r
 190     p_vout->p_sys->hGLRC = wglCreateContext( p_vout->p_sys->hGLDC );\r
 191     wglMakeCurrent( p_vout->p_sys->hGLDC, p_vout->p_sys->hGLRC );\r
 192 \r
 193     return VLC_SUCCESS;\r
 194 }\r
 195 \r
 196 /*****************************************************************************\r
 197  * End: terminate Sys video thread output method\r
 198  *****************************************************************************\r
 199  * Terminate an output method created by Create.\r
 200  * It is called at the end of the thread.\r
 201  *****************************************************************************/\r
 202 static void End( vout_thread_t *p_vout )\r
 203 {\r
 204     wglMakeCurrent( NULL, NULL );\r
 205     wglDeleteContext( p_vout->p_sys->hGLRC );\r
 206     ReleaseDC( p_vout->p_sys->hvideownd, p_vout->p_sys->hGLDC );\r
 207     return;\r
 208 }\r
 209 \r
 210 /*****************************************************************************\r
 211  * CloseVideo: destroy Sys video thread output method\r
 212  *****************************************************************************\r
 213  * Terminate an output method created by Create\r
 214  *****************************************************************************/\r
 215 static void CloseVideo( vlc_object_t *p_this )\r
 216 {\r
 217     vout_thread_t * p_vout = (vout_thread_t *)p_this;\r
 218 \r
 219     msg_Dbg( p_vout, "CloseVideo" );\r
 220 \r
 221     if( p_vout->p_sys->p_event )\r
 222     {\r
 223         vlc_object_detach( p_vout->p_sys->p_event );\r
 224 \r
 225         /* Kill DirectXEventThread */\r
 226         p_vout->p_sys->p_event->b_die = VLC_TRUE;\r
 227 \r
 228         /* we need to be sure DirectXEventThread won't stay stuck in\r
 229          * GetMessage, so we send a fake message */\r
 230         if( p_vout->p_sys->hwnd )\r
 231         {\r
 232             PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0);\r
 233         }\r
 234 \r
 235         vlc_thread_join( p_vout->p_sys->p_event );\r
 236         vlc_object_destroy( p_vout->p_sys->p_event );\r
 237     }\r
 238 \r
 239     vlc_mutex_destroy( &p_vout->p_sys->lock );\r
 240 \r
 241     if( p_vout->p_sys )\r
 242     {\r
 243         free( p_vout->p_sys );\r
 244         p_vout->p_sys = NULL;\r
 245     }\r
 246 }\r
 247 \r
 248 /*****************************************************************************\r
 249  * Manage: handle Sys events\r
 250  *****************************************************************************\r
 251  * This function should be called regularly by the video output thread.\r
 252  * It returns a non null value if an error occured.\r
 253  *****************************************************************************/\r
 254 static int Manage( vout_thread_t *p_vout )\r
 255 {\r
 256     WINDOWPLACEMENT window_placement;\r
 257 \r
 258     int i_width = p_vout->p_sys->rect_dest.right -\r
 259         p_vout->p_sys->rect_dest.left;\r
 260     int i_height = p_vout->p_sys->rect_dest.bottom -\r
 261         p_vout->p_sys->rect_dest.top;\r
 262     glViewport( 0, 0, i_width, i_height );\r
 263 \r
 264     /* If we do not control our window, we check for geometry changes\r
 265      * ourselves because the parent might not send us its events. */\r
 266     vlc_mutex_lock( &p_vout->p_sys->lock );\r
 267     if( p_vout->p_sys->hparent && !p_vout->b_fullscreen )\r
 268     {\r
 269         RECT rect_parent;\r
 270         POINT point;\r
 271 \r
 272         vlc_mutex_unlock( &p_vout->p_sys->lock );\r
 273 \r
 274         GetClientRect( p_vout->p_sys->hparent, &rect_parent );\r
 275         point.x = point.y = 0;\r
 276         ClientToScreen( p_vout->p_sys->hparent, &point );\r
 277         OffsetRect( &rect_parent, point.x, point.y );\r
 278 \r
 279         if( !EqualRect( &rect_parent, &p_vout->p_sys->rect_parent ) )\r
 280         {\r
 281             p_vout->p_sys->rect_parent = rect_parent;\r
 282 \r
 283             /* This one is to force the update even if only\r
 284              * the position has changed */\r
 285             SetWindowPos( p_vout->p_sys->hwnd, 0, 1, 1,\r
 286                           rect_parent.right - rect_parent.left,\r
 287                           rect_parent.bottom - rect_parent.top, 0 );\r
 288 \r
 289             SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,\r
 290                           rect_parent.right - rect_parent.left,\r
 291                           rect_parent.bottom - rect_parent.top, 0 );\r
 292         }\r
 293     }\r
 294     else\r
 295     {\r
 296         vlc_mutex_unlock( &p_vout->p_sys->lock );\r
 297     }\r
 298 \r
 299     /* We used to call the Win32 PeekMessage function here to read the window\r
 300      * messages. But since window can stay blocked into this function for a\r
 301      * long time (for example when you move your window on the screen), I\r
 302      * decided to isolate PeekMessage in another thread. */\r
 303 \r
 304     /*\r
 305      * Fullscreen change\r
 306      */\r
 307     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE\r
 308         || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )\r
 309     {\r
 310         int i_style = 0;\r
 311         vlc_value_t val;\r
 312 \r
 313         p_vout->b_fullscreen = ! p_vout->b_fullscreen;\r
 314 \r
 315         /* We need to switch between Maximized and Normal sized window */\r
 316         window_placement.length = sizeof(WINDOWPLACEMENT);\r
 317         if( p_vout->b_fullscreen )\r
 318         {\r
 319             if( p_vout->p_sys->hparent )\r
 320             {\r
 321                 POINT point;\r
 322 \r
 323                 /* Retrieve the window position */\r
 324                 point.x = point.y = 0;\r
 325                 ClientToScreen( p_vout->p_sys->hwnd, &point );\r
 326                 SetParent( p_vout->p_sys->hwnd, GetDesktopWindow() );\r
 327                 SetWindowPos( p_vout->p_sys->hwnd, 0, point.x, point.y, 0, 0,\r
 328                               SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED );\r
 329                 SetForegroundWindow( p_vout->p_sys->hwnd );\r
 330             }\r
 331 \r
 332             /* Maximized window */\r
 333             GetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );\r
 334             window_placement.showCmd = SW_SHOWMAXIMIZED;\r
 335             /* Change window style, no borders and no title bar */\r
 336             i_style = WS_CLIPCHILDREN | WS_VISIBLE | WS_POPUP;\r
 337         }\r
 338         else\r
 339         {\r
 340             if( p_vout->p_sys->hparent )\r
 341             {\r
 342                 SetParent( p_vout->p_sys->hwnd, p_vout->p_sys->hparent );\r
 343                 SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0, 0, 0,\r
 344                               SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED );\r
 345                 i_style = WS_CLIPCHILDREN | WS_VISIBLE | WS_CHILD;\r
 346                 SetForegroundWindow( p_vout->p_sys->hparent );\r
 347             }\r
 348             else\r
 349             {\r
 350                 i_style = WS_CLIPCHILDREN | WS_OVERLAPPEDWINDOW |\r
 351                           WS_SIZEBOX | WS_VISIBLE;\r
 352             }\r
 353 \r
 354             /* Normal window */\r
 355             GetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );\r
 356             window_placement.showCmd = SW_SHOWNORMAL;\r
 357 \r
 358             /* Make sure the mouse cursor is displayed */\r
 359             PostMessage( p_vout->p_sys->hwnd, WM_VLC_SHOW_MOUSE, 0, 0 );\r
 360         }\r
 361 \r
 362         /* Change window style, borders and title bar */\r
 363         SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE, i_style );\r
 364         SetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );\r
 365         SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0, 0, 0,\r
 366                       SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED );\r
 367 \r
 368         /* Update the object variable and trigger callback */\r
 369         val.b_bool = p_vout->b_fullscreen;\r
 370         var_Set( p_vout, "fullscreen", val );\r
 371 \r
 372         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;\r
 373         p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;\r
 374     }\r
 375 \r
 376     /*\r
 377      * Pointer change\r
 378      */\r
 379     if( p_vout->b_fullscreen && !p_vout->p_sys->b_cursor_hidden &&\r
 380         (mdate() - p_vout->p_sys->i_lastmoved) > 5000000 )\r
 381     {\r
 382         POINT point;\r
 383         HWND hwnd;\r
 384 \r
 385         /* Hide the cursor only if it is inside our window */\r
 386         GetCursorPos( &point );\r
 387         hwnd = WindowFromPoint(point);\r
 388         if( hwnd == p_vout->p_sys->hwnd || hwnd == p_vout->p_sys->hvideownd )\r
 389         {\r
 390             PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );\r
 391         }\r
 392         else\r
 393         {\r
 394             p_vout->p_sys->i_lastmoved = mdate();\r
 395         }\r
 396     }\r
 397 \r
 398     /*\r
 399      * "Always on top" status change\r
 400      */\r
 401     if( p_vout->p_sys->b_on_top_change )\r
 402     {\r
 403         vlc_value_t val;\r
 404         HMENU hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );\r
 405 \r
 406         var_Get( p_vout, "video-on-top", &val );\r
 407 \r
 408         /* Set the window on top if necessary */\r
 409         if( val.b_bool && !( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )\r
 410                            & WS_EX_TOPMOST ) )\r
 411         {\r
 412             CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,\r
 413                            MF_BYCOMMAND | MFS_CHECKED );\r
 414             SetWindowPos( p_vout->p_sys->hwnd, HWND_TOPMOST, 0, 0, 0, 0,\r
 415                           SWP_NOSIZE | SWP_NOMOVE );\r
 416         }\r
 417         else\r
 418         /* The window shouldn't be on top */\r
 419         if( !val.b_bool && ( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )\r
 420                            & WS_EX_TOPMOST ) )\r
 421         {\r
 422             CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,\r
 423                            MF_BYCOMMAND | MFS_UNCHECKED );\r
 424             SetWindowPos( p_vout->p_sys->hwnd, HWND_NOTOPMOST, 0, 0, 0, 0,\r
 425                           SWP_NOSIZE | SWP_NOMOVE );\r
 426         }\r
 427 \r
 428         p_vout->p_sys->b_on_top_change = VLC_FALSE;\r
 429     }\r
 430 \r
 431     /* Check if the event thread is still running */\r
 432     if( p_vout->p_sys->p_event->b_die )\r
 433     {\r
 434         return VLC_EGENERIC; /* exit */\r
 435     }\r
 436 \r
 437     return VLC_SUCCESS;\r
 438 }\r
 439 \r
 440 /*****************************************************************************\r
 441  * GLSwapBuffers: swap front/back buffers\r
 442  *****************************************************************************/\r
 443 static void GLSwapBuffers( vout_thread_t *p_vout )\r
 444 {\r
 445     SwapBuffers( p_vout->p_sys->hGLDC );\r
 446 }\r
 447 \r
 448 int DirectXUpdateOverlay( vout_thread_t *p_vout )\r
 449 {\r
 450     return 1;\r
 451 }\r