libvo/w32_common.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <limits.h>
  21 #include <windows.h>
  22 #include <windowsx.h>
  23
  24 // To get "#define vo_ontop global_vo->opts->vo_ontop" etc
  25 #include "old_vo_defines.h"
  26 #include "input/keycodes.h"
  27 #include "input/input.h"
  28 #include "mp_msg.h"
  29 #include "video_out.h"
  30 #include "aspect.h"
  31 #include "w32_common.h"
  32 #include "mp_fifo.h"
  33
  34 #ifndef WM_XBUTTONDOWN
  35 # define WM_XBUTTONDOWN    0x020B
  36 # define WM_XBUTTONUP      0x020C
  37 # define WM_XBUTTONDBLCLK  0x020D
  38 #endif
  39
  40 #ifndef MONITOR_DEFAULTTOPRIMARY
  41 #define MONITOR_DEFAULTTOPRIMARY 1
  42 #endif
  43
  44 static const char classname[] = "MPlayer - The Movie Player";
  45 int vo_vm = 0;
  46
  47 static int depthonscreen;
  48 // last non-fullscreen extends
  49 static int prev_width;
  50 static int prev_height;
  51 static int prev_x;
  52 static int prev_y;
  53
  54 static uint32_t o_dwidth;
  55 static uint32_t o_dheight;
  56
  57 static HINSTANCE hInstance;
  58 #define vo_window vo_w32_window
  59 HWND vo_window = 0;
  60 /** HDC used when rendering to a device instead of window */
  61 static HDC dev_hdc;
  62 static int event_flags;
  63 static int mon_cnt;
  64
  65 static HMONITOR (WINAPI* myMonitorFromWindow)(HWND, DWORD);
  66 static BOOL (WINAPI* myGetMonitorInfo)(HMONITOR, LPMONITORINFO);
  67 static BOOL (WINAPI* myEnumDisplayMonitors)(HDC, LPCRECT, MONITORENUMPROC, LPARAM);
  68
  69 static const struct mp_keymap vk_map[] = {
  70     // special keys
  71     {VK_ESCAPE, KEY_ESC}, {VK_BACK, KEY_BS}, {VK_TAB, KEY_TAB}, {VK_CONTROL, KEY_CTRL},
  72
  73     // cursor keys
  74     {VK_LEFT, KEY_LEFT}, {VK_UP, KEY_UP}, {VK_RIGHT, KEY_RIGHT}, {VK_DOWN, KEY_DOWN},
  75
  76     // navigation block
  77     {VK_INSERT, KEY_INSERT}, {VK_DELETE, KEY_DELETE}, {VK_HOME, KEY_HOME}, {VK_END, KEY_END},
  78     {VK_PRIOR, KEY_PAGE_UP}, {VK_NEXT, KEY_PAGE_DOWN},
  79
  80     // F-keys
  81     {VK_F1, KEY_F+1}, {VK_F2, KEY_F+2}, {VK_F3, KEY_F+3}, {VK_F4, KEY_F+4},
  82     {VK_F5, KEY_F+5}, {VK_F6, KEY_F+6}, {VK_F7, KEY_F+7}, {VK_F8, KEY_F+8},
  83     {VK_F9, KEY_F+9}, {VK_F10, KEY_F+10}, {VK_F11, KEY_F+11}, {VK_F1, KEY_F+12},
  84     // numpad
  85     {VK_NUMPAD0, KEY_KP0}, {VK_NUMPAD1, KEY_KP1}, {VK_NUMPAD2, KEY_KP2},
  86     {VK_NUMPAD3, KEY_KP3}, {VK_NUMPAD4, KEY_KP4}, {VK_NUMPAD5, KEY_KP5},
  87     {VK_NUMPAD6, KEY_KP6}, {VK_NUMPAD7, KEY_KP7}, {VK_NUMPAD8, KEY_KP8},
  88     {VK_NUMPAD9, KEY_KP9}, {VK_DECIMAL, KEY_KPDEC},
  89
  90     {0, 0}
  91 };
  92
  93 static LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
  94     RECT r;
  95     POINT p;
  96     int mpkey;
  97     switch (message) {
  98         case WM_ERASEBKGND: // no need to erase background seperately
  99             return 1;
 100         case WM_PAINT:
 101             event_flags |= VO_EVENT_EXPOSE;
 102             break;
 103         case WM_MOVE:
 104             p.x = 0;
 105             p.y = 0;
 106             ClientToScreen(vo_window, &p);
 107             vo_dx = p.x;
 108             vo_dy = p.y;
 109             break;
 110         case WM_SIZE:
 111             event_flags |= VO_EVENT_RESIZE;
 112             GetClientRect(vo_window, &r);
 113             vo_dwidth = r.right;
 114             vo_dheight = r.bottom;
 115             break;
 116         case WM_WINDOWPOSCHANGING:
 117             if (vo_keepaspect && !vo_fs && WinID < 0) {
 118                 WINDOWPOS *wpos = lParam;
 119                 int xborder, yborder;
 120                 r.left = r.top = 0;
 121                 r.right = wpos->cx;
 122                 r.bottom = wpos->cy;
 123                 AdjustWindowRect(&r, GetWindowLong(vo_window, GWL_STYLE), 0);
 124                 xborder = (r.right - r.left) - wpos->cx;
 125                 yborder = (r.bottom - r.top) - wpos->cy;
 126                 wpos->cx -= xborder; wpos->cy -= yborder;
 127                 aspect_fit(global_vo, &wpos->cx, &wpos->cy, wpos->cx, wpos->cy);
 128                 wpos->cx += xborder; wpos->cy += yborder;
 129             }
 130             return 0;
 131         case WM_CLOSE:
 132             mplayer_put_key(KEY_CLOSE_WIN);
 133             break;
 134         case WM_SYSCOMMAND:
 135             switch (wParam) {
 136                 case SC_SCREENSAVE:
 137                 case SC_MONITORPOWER:
 138                     mp_msg(MSGT_VO, MSGL_V, "vo: win32: killing screensaver\n");
 139                     return 0;
 140             }
 141             break;
 142         case WM_KEYDOWN:
 143             mpkey = lookup_keymap_table(vk_map, wParam);
 144             if (mpkey)
 145                 mplayer_put_key(mpkey);
 146             break;
 147         case WM_CHAR:
 148             mplayer_put_key(wParam);
 149             break;
 150         case WM_LBUTTONDOWN:
 151             if (!vo_nomouse_input && (vo_fs || (wParam & MK_CONTROL))) {
 152                 mplayer_put_key(MOUSE_BTN0);
 153                 break;
 154             }
 155             if (!vo_fs) {
 156                 ReleaseCapture();
 157                 SendMessage(hWnd, WM_NCLBUTTONDOWN, HTCAPTION, 0);
 158                 return 0;
 159             }
 160             break;
 161         case WM_MBUTTONDOWN:
 162             if (!vo_nomouse_input)
 163                 mplayer_put_key(MOUSE_BTN1);
 164             break;
 165         case WM_RBUTTONDOWN:
 166             if (!vo_nomouse_input)
 167                 mplayer_put_key(MOUSE_BTN2);
 168             break;
 169         case WM_MOUSEMOVE:
 170             vo_mouse_movement(global_vo, GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
 171             break;
 172         case WM_MOUSEWHEEL:
 173             if (!vo_nomouse_input) {
 174                 int x = GET_WHEEL_DELTA_WPARAM(wParam);
 175                 if (x > 0)
 176                     mplayer_put_key(MOUSE_BTN3);
 177                 else
 178                     mplayer_put_key(MOUSE_BTN4);
 179             }
 180             break;
 181         case WM_XBUTTONDOWN:
 182             if (!vo_nomouse_input) {
 183                 int x = HIWORD(wParam);
 184                 if (x == 1)
 185                     mplayer_put_key(MOUSE_BTN5);
 186                 else // if (x == 2)
 187                     mplayer_put_key(MOUSE_BTN6);
 188             }
 189             break;
 190     }
 191
 192     return DefWindowProc(hWnd, message, wParam, lParam);
 193 }
 194
 195 /**
 196  * \brief Dispatch incoming window events and handle them.
 197  *
 198  * This function should be placed inside libvo's function "check_events".
 199  *
 200  * Global libvo variables changed:
 201  * vo_dwidth:  new window client area width
 202  * vo_dheight: new window client area height
 203  *
 204  * \return int with these flags possibly set, take care to handle in the right order
 205  *         if it matters in your driver:
 206  *
 207  * VO_EVENT_RESIZE = The window was resized. If necessary reinit your
 208  *                   driver render context accordingly.
 209  * VO_EVENT_EXPOSE = The window was exposed. Call e.g. flip_frame() to redraw
 210  *                   the window if the movie is paused.
 211  */
 212 int vo_w32_check_events(void) {
 213     MSG msg;
 214     event_flags = 0;
 215     while (PeekMessage(&msg, 0, 0, 0, PM_REMOVE)) {
 216         TranslateMessage(&msg);
 217         DispatchMessage(&msg);
 218     }
 219     if (WinID >= 0) {
 220         BOOL res;
 221         RECT r;
 222         res = GetClientRect(vo_window, &r);
 223         if (res && (r.right != vo_dwidth || r.bottom != vo_dheight)) {
 224             vo_dwidth = r.right; vo_dheight = r.bottom;
 225             event_flags |= VO_EVENT_RESIZE;
 226         }
 227         res = GetClientRect(WinID, &r);
 228         if (res && (r.right != vo_dwidth || r.bottom != vo_dheight))
 229             MoveWindow(vo_window, 0, 0, r.right, r.bottom, FALSE);
 230         if (!IsWindow(WinID))
 231             // Window has probably been closed, e.g. due to program crash
 232             mplayer_put_key(KEY_CLOSE_WIN);
 233     }
 234
 235     return event_flags;
 236 }
 237
 238 static BOOL CALLBACK mon_enum(HMONITOR hmon, HDC hdc, LPRECT r, LPARAM p) {
 239     // this defaults to the last screen if specified number does not exist
 240     xinerama_x = r->left;
 241     xinerama_y = r->top;
 242     vo_screenwidth = r->right - r->left;
 243     vo_screenheight = r->bottom - r->top;
 244     if (mon_cnt == xinerama_screen)
 245         return FALSE;
 246     mon_cnt++;
 247     return TRUE;
 248 }
 249
 250 /**
 251  * \brief Update screen information.
 252  *
 253  * This function should be called in libvo's "control" callback
 254  * with parameter VOCTRL_UPDATE_SCREENINFO.
 255  * Note that this also enables the new API where geometry and aspect
 256  * calculations are done in video_out.c:config_video_out
 257  *
 258  * Global libvo variables changed:
 259  * xinerama_x
 260  * xinerama_y
 261  * vo_screenwidth
 262  * vo_screenheight
 263  */
 264 void w32_update_xinerama_info(void) {
 265     xinerama_x = xinerama_y = 0;
 266     if (xinerama_screen < -1) {
 267         int tmp;
 268         xinerama_x = GetSystemMetrics(SM_XVIRTUALSCREEN);
 269         xinerama_y = GetSystemMetrics(SM_YVIRTUALSCREEN);
 270         tmp = GetSystemMetrics(SM_CXVIRTUALSCREEN);
 271         if (tmp) vo_screenwidth = tmp;
 272         tmp = GetSystemMetrics(SM_CYVIRTUALSCREEN);
 273         if (tmp) vo_screenheight = tmp;
 274     } else if (xinerama_screen == -1 && myMonitorFromWindow && myGetMonitorInfo) {
 275         MONITORINFO mi;
 276         HMONITOR m = myMonitorFromWindow(vo_window, MONITOR_DEFAULTTOPRIMARY);
 277         mi.cbSize = sizeof(mi);
 278         myGetMonitorInfo(m, &mi);
 279         xinerama_x = mi.rcMonitor.left;
 280         xinerama_y = mi.rcMonitor.top;
 281         vo_screenwidth = mi.rcMonitor.right - mi.rcMonitor.left;
 282         vo_screenheight = mi.rcMonitor.bottom - mi.rcMonitor.top;
 283     } else if (xinerama_screen > 0 && myEnumDisplayMonitors) {
 284         mon_cnt = 0;
 285         myEnumDisplayMonitors(NULL, NULL, mon_enum, 0);
 286     }
 287     aspect_save_screenres(vo_screenwidth, vo_screenheight);
 288 }
 289
 290 static void updateScreenProperties(void) {
 291     DEVMODE dm;
 292     dm.dmSize = sizeof dm;
 293     dm.dmDriverExtra = 0;
 294     dm.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
 295     if (!EnumDisplaySettings(0, ENUM_CURRENT_SETTINGS, &dm)) {
 296         mp_msg(MSGT_VO, MSGL_ERR, "vo: win32: unable to enumerate display settings!\n");
 297         return;
 298     }
 299
 300     vo_screenwidth = dm.dmPelsWidth;
 301     vo_screenheight = dm.dmPelsHeight;
 302     depthonscreen = dm.dmBitsPerPel;
 303     w32_update_xinerama_info();
 304 }
 305
 306 static void changeMode(void) {
 307     DEVMODE dm;
 308     dm.dmSize = sizeof dm;
 309     dm.dmDriverExtra = 0;
 310
 311     dm.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
 312     dm.dmBitsPerPel = depthonscreen;
 313     dm.dmPelsWidth = vo_screenwidth;
 314     dm.dmPelsHeight = vo_screenheight;
 315
 316     if (vo_vm) {
 317         int bestMode = -1;
 318         int bestScore = INT_MAX;
 319         int i;
 320         for (i = 0; EnumDisplaySettings(0, i, &dm); ++i) {
 321             int score = (dm.dmPelsWidth - o_dwidth) * (dm.dmPelsHeight - o_dheight);
 322             if (dm.dmBitsPerPel != depthonscreen) continue;
 323             if (dm.dmPelsWidth < o_dwidth) continue;
 324             if (dm.dmPelsHeight < o_dheight) continue;
 325
 326             if (score < bestScore) {
 327                 bestScore = score;
 328                 bestMode = i;
 329             }
 330         }
 331
 332         if (bestMode != -1)
 333             EnumDisplaySettings(0, bestMode, &dm);
 334
 335         ChangeDisplaySettings(&dm, CDS_FULLSCREEN);
 336     }
 337 }
 338
 339 static void resetMode(void) {
 340     if (vo_vm)
 341     ChangeDisplaySettings(0, 0);
 342 }
 343
 344 static int createRenderingContext(void) {
 345     HWND layer = HWND_NOTOPMOST;
 346     RECT r;
 347     int style = (vo_border && !vo_fs) ?
 348                 (WS_OVERLAPPEDWINDOW | WS_SIZEBOX) : WS_POPUP;
 349
 350     if (WinID >= 0)
 351         return 1;
 352
 353     if (vo_fs || vo_ontop) layer = HWND_TOPMOST;
 354     if (vo_fs) {
 355         changeMode();
 356         while (ShowCursor(0) >= 0) /**/ ;
 357     } else {
 358         resetMode();
 359         while (ShowCursor(1) < 0) /**/ ;
 360     }
 361     updateScreenProperties();
 362     ShowWindow(vo_window, SW_HIDE);
 363     SetWindowLong(vo_window, GWL_STYLE, style);
 364     if (vo_fs) {
 365         prev_width = vo_dwidth;
 366         prev_height = vo_dheight;
 367         prev_x = vo_dx;
 368         prev_y = vo_dy;
 369         vo_dwidth = vo_screenwidth;
 370         vo_dheight = vo_screenheight;
 371         vo_dx = xinerama_x;
 372         vo_dy = xinerama_y;
 373     } else {
 374         // make sure there are no "stale" resize events
 375         // that would set vo_d* to wrong values
 376         vo_w32_check_events();
 377         vo_dwidth = prev_width;
 378         vo_dheight = prev_height;
 379         vo_dx = prev_x;
 380         vo_dy = prev_y;
 381         // HACK around what probably is a windows focus bug:
 382         // when pressing 'f' on the console, then 'f' again to
 383         // return to windowed mode, any input into the video
 384         // window is lost forever.
 385         SetFocus(vo_window);
 386     }
 387     r.left = vo_dx;
 388     r.right = r.left + vo_dwidth;
 389     r.top = vo_dy;
 390     r.bottom = r.top + vo_dheight;
 391     AdjustWindowRect(&r, style, 0);
 392     SetWindowPos(vo_window, layer, r.left, r.top, r.right - r.left, r.bottom - r.top, SWP_SHOWWINDOW);
 393     return 1;
 394 }
 395
 396 /**
 397  * \brief Configure and show window on the screen.
 398  *
 399  * This function should be called in libvo's "config" callback.
 400  * It configures a window and shows it on the screen.
 401  *
 402  * Global libvo variables changed:
 403  * vo_fs
 404  * vo_vm
 405  *
 406  * \return 1 - Success, 0 - Failure
 407  */
 408 int vo_w32_config(uint32_t width, uint32_t height, uint32_t flags) {
 409     PIXELFORMATDESCRIPTOR pfd;
 410     int pf;
 411     HDC vo_hdc = vo_w32_get_dc(vo_window);
 412
 413     memset(&pfd, 0, sizeof pfd);
 414     pfd.nSize = sizeof pfd;
 415     pfd.nVersion = 1;
 416     pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
 417     if (flags & VOFLAG_STEREO)
 418         pfd.dwFlags |= PFD_STEREO;
 419     pfd.iPixelType = PFD_TYPE_RGBA;
 420     pfd.cColorBits = 24;
 421     pfd.iLayerType = PFD_MAIN_PLANE;
 422     pf = ChoosePixelFormat(vo_hdc, &pfd);
 423     if (!pf) {
 424         mp_msg(MSGT_VO, MSGL_ERR, "vo: win32: unable to select a valid pixel format!\n");
 425         vo_w32_release_dc(vo_window, vo_hdc);
 426         return 0;
 427     }
 428
 429     SetPixelFormat(vo_hdc, pf, &pfd);
 430     vo_w32_release_dc(vo_window, vo_hdc);
 431
 432     // we already have a fully initialized window, so nothing needs to be done
 433     if (flags & VOFLAG_HIDDEN)
 434         return 1;
 435     // store original size for videomode switching
 436     o_dwidth = width;
 437     o_dheight = height;
 438
 439     if (WinID < 0) {
 440         // the desired size is ignored in wid mode, it always matches the window size.
 441         prev_width = vo_dwidth = width;
 442         prev_height = vo_dheight = height;
 443         prev_x = vo_dx;
 444         prev_y = vo_dy;
 445     }
 446
 447     vo_fs = flags & VOFLAG_FULLSCREEN;
 448     vo_vm = flags & VOFLAG_MODESWITCHING;
 449     return createRenderingContext();
 450 }
 451
 452 /**
 453  * \brief return the name of the selected device if it is indepedant
 454  * \return pointer to string, must be freed.
 455  */
 456 static char *get_display_name(void) {
 457     DISPLAY_DEVICE disp;
 458     disp.cb = sizeof(disp);
 459     EnumDisplayDevices(NULL, vo_adapter_num, &disp, 0);
 460     if (disp.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)
 461         return NULL;
 462     return strdup(disp.DeviceName);
 463 }
 464
 465 /**
 466  * \brief Initialize w32_common framework.
 467  *
 468  * The first function that should be called from the w32_common framework.
 469  * It handles window creation on the screen with proper title and attributes.
 470  * It also initializes the framework's internal variables. The function should
 471  * be called after your own preinit initialization and you shouldn't do any
 472  * window management on your own.
 473  *
 474  * Global libvo variables changed:
 475  * vo_w32_window
 476  * vo_screenwidth
 477  * vo_screenheight
 478  *
 479  * \return 1 = Success, 0 = Failure
 480  */
 481 int vo_w32_init(void) {
 482     HICON mplayerIcon = 0;
 483     char exedir[MAX_PATH];
 484     HINSTANCE user32;
 485     char *dev;
 486
 487     if (vo_window)
 488         return 1;
 489
 490     hInstance = GetModuleHandle(0);
 491
 492     if (GetModuleFileName(0, exedir, MAX_PATH))
 493         mplayerIcon = ExtractIcon(hInstance, exedir, 0);
 494     if (!mplayerIcon)
 495         mplayerIcon = LoadIcon(0, IDI_APPLICATION);
 496
 497   {
 498     WNDCLASSEX wcex = { sizeof wcex, CS_OWNDC | CS_DBLCLKS, WndProc, 0, 0, hInstance, mplayerIcon, LoadCursor(0, IDC_ARROW), NULL, 0, classname, mplayerIcon };
 499
 500     if (!RegisterClassEx(&wcex)) {
 501         mp_msg(MSGT_VO, MSGL_ERR, "vo: win32: unable to register window class!\n");
 502         return 0;
 503     }
 504   }
 505
 506     if (WinID >= 0)
 507     {
 508         RECT r;
 509         GetClientRect(WinID, &r);
 510         vo_dwidth = r.right; vo_dheight = r.bottom;
 511         vo_window = CreateWindowEx(WS_EX_NOPARENTNOTIFY, classname, classname,
 512                      WS_CHILD | WS_VISIBLE,
 513                      0, 0, vo_dwidth, vo_dheight, WinID, 0, hInstance, 0);
 514         EnableWindow(vo_window, 0);
 515     } else
 516         vo_window = CreateWindowEx(0, classname, classname,
 517                       vo_border ? (WS_OVERLAPPEDWINDOW | WS_SIZEBOX) : WS_POPUP,
 518                       CW_USEDEFAULT, 0, 100, 100, 0, 0, hInstance, 0);
 519     if (!vo_window) {
 520         mp_msg(MSGT_VO, MSGL_ERR, "vo: win32: unable to create window!\n");
 521         return 0;
 522     }
 523
 524     myMonitorFromWindow = NULL;
 525     myGetMonitorInfo = NULL;
 526     myEnumDisplayMonitors = NULL;
 527     user32 = GetModuleHandle("user32.dll");
 528     if (user32) {
 529         myMonitorFromWindow = (void *)GetProcAddress(user32, "MonitorFromWindow");
 530         myGetMonitorInfo = GetProcAddress(user32, "GetMonitorInfoA");
 531         myEnumDisplayMonitors = GetProcAddress(user32, "EnumDisplayMonitors");
 532     }
 533     dev_hdc = 0;
 534     dev = get_display_name();
 535     if (dev) dev_hdc = CreateDC(dev, NULL, NULL, NULL);
 536     free(dev);
 537     updateScreenProperties();
 538
 539     mp_msg(MSGT_VO, MSGL_V, "vo: win32: running at %dx%d with depth %d\n", vo_screenwidth, vo_screenheight, depthonscreen);
 540
 541     return 1;
 542 }
 543
 544 /**
 545  * \brief Toogle fullscreen / windowed mode.
 546  *
 547  * Should be called on VOCTRL_FULLSCREEN event. The window is
 548  * always resized after this call, so the rendering context
 549  * should be reinitialized with the new dimensions.
 550  * It is unspecified if vo_check_events will create a resize
 551  * event in addition or not.
 552  *
 553  * Global libvo variables changed:
 554  * vo_dwidth
 555  * vo_dheight
 556  * vo_fs
 557  */
 558
 559 void vo_w32_fullscreen(void) {
 560     vo_fs = !vo_fs;
 561
 562     createRenderingContext();
 563 }
 564
 565 /**
 566  * \brief Toogle window border attribute.
 567  *
 568  * Should be called on VOCTRL_BORDER event.
 569  *
 570  * Global libvo variables changed:
 571  * vo_border
 572  */
 573 void vo_w32_border(void) {
 574     vo_border = !vo_border;
 575     createRenderingContext();
 576 }
 577
 578 /**
 579  * \brief Toogle window ontop attribute.
 580  *
 581  * Should be called on VOCTRL_ONTOP event.
 582  *
 583  * Global libvo variables changed:
 584  * vo_ontop
 585  */
 586 void vo_w32_ontop( void )
 587 {
 588     vo_ontop = !vo_ontop;
 589     if (!vo_fs) {
 590         createRenderingContext();
 591     }
 592 }
 593
 594 /**
 595  * \brief Uninitialize w32_common framework.
 596  *
 597  * Should be called last in video driver's uninit function. First release
 598  * anything built on top of the created window e.g. rendering context inside
 599  * and call vo_w32_uninit at the end.
 600  */
 601 void vo_w32_uninit(void) {
 602     mp_msg(MSGT_VO, MSGL_V, "vo: win32: uninit\n");
 603     resetMode();
 604     ShowCursor(1);
 605     depthonscreen = 0;
 606     if (dev_hdc) DeleteDC(dev_hdc);
 607     dev_hdc = 0;
 608     DestroyWindow(vo_window);
 609     vo_window = 0;
 610     UnregisterClass(classname, 0);
 611 }
 612
 613 /**
 614  * \brief get a device context to draw in
 615  *
 616  * \param wnd window the DC should belong to if it makes sense
 617  */
 618 HDC vo_w32_get_dc(HWND wnd) {
 619     if (dev_hdc) return dev_hdc;
 620     return GetDC(wnd);
 621 }
 622
 623 /**
 624  * \brief release a device context
 625  *
 626  * \param wnd window the DC probably belongs to
 627  */
 628 void vo_w32_release_dc(HWND wnd, HDC dc) {
 629     if (dev_hdc) return;
 630     ReleaseDC(wnd, dc);
 631 }