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 #define WIN_ID_TO_HWND(x) ((HWND)(uint32_t)(x))
  45
  46 static const char classname[] = "MPlayer - The Movie Player";
  47 int vo_vm = 0;
  48
  49 static int depthonscreen;
  50 // last non-fullscreen extends
  51 static int prev_width;
  52 static int prev_height;
  53 static int prev_x;
  54 static int prev_y;
  55
  56 static uint32_t o_dwidth;
  57 static uint32_t o_dheight;
  58
  59 static HINSTANCE hInstance;
  60 #define vo_window vo_w32_window
  61 HWND vo_window = 0;
  62 /** HDC used when rendering to a device instead of window */
  63 static HDC dev_hdc;
  64 static int event_flags;
  65 static int mon_cnt;
  66
  67 static HMONITOR (WINAPI* myMonitorFromWindow)(HWND, DWORD);
  68 static BOOL (WINAPI* myGetMonitorInfo)(HMONITOR, LPMONITORINFO);
  69 static BOOL (WINAPI* myEnumDisplayMonitors)(HDC, LPCRECT, MONITORENUMPROC, LPARAM);
  70
  71 static const struct mp_keymap vk_map[] = {
  72     // special keys
  73     {VK_ESCAPE, KEY_ESC}, {VK_BACK, KEY_BS}, {VK_TAB, KEY_TAB}, {VK_CONTROL, KEY_CTRL},
  74
  75     // cursor keys
  76     {VK_LEFT, KEY_LEFT}, {VK_UP, KEY_UP}, {VK_RIGHT, KEY_RIGHT}, {VK_DOWN, KEY_DOWN},
  77
  78     // navigation block
  79     {VK_INSERT, KEY_INSERT}, {VK_DELETE, KEY_DELETE}, {VK_HOME, KEY_HOME}, {VK_END, KEY_END},
  80     {VK_PRIOR, KEY_PAGE_UP}, {VK_NEXT, KEY_PAGE_DOWN},
  81
  82     // F-keys
  83     {VK_F1, KEY_F+1}, {VK_F2, KEY_F+2}, {VK_F3, KEY_F+3}, {VK_F4, KEY_F+4},
  84     {VK_F5, KEY_F+5}, {VK_F6, KEY_F+6}, {VK_F7, KEY_F+7}, {VK_F8, KEY_F+8},
  85     {VK_F9, KEY_F+9}, {VK_F10, KEY_F+10}, {VK_F11, KEY_F+11}, {VK_F1, KEY_F+12},
  86     // numpad
  87     {VK_NUMPAD0, KEY_KP0}, {VK_NUMPAD1, KEY_KP1}, {VK_NUMPAD2, KEY_KP2},
  88     {VK_NUMPAD3, KEY_KP3}, {VK_NUMPAD4, KEY_KP4}, {VK_NUMPAD5, KEY_KP5},
  89     {VK_NUMPAD6, KEY_KP6}, {VK_NUMPAD7, KEY_KP7}, {VK_NUMPAD8, KEY_KP8},
  90     {VK_NUMPAD9, KEY_KP9}, {VK_DECIMAL, KEY_KPDEC},
  91
  92     {0, 0}
  93 };
  94
  95 static LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
  96     RECT r;
  97     POINT p;
  98     int mpkey;
  99     switch (message) {
 100         case WM_ERASEBKGND: // no need to erase background seperately
 101             return 1;
 102         case WM_PAINT:
 103             event_flags |= VO_EVENT_EXPOSE;
 104             break;
 105         case WM_MOVE:
 106             event_flags |= VO_EVENT_MOVE;
 107             p.x = 0;
 108             p.y = 0;
 109             ClientToScreen(vo_window, &p);
 110             vo_dx = p.x;
 111             vo_dy = p.y;
 112             break;
 113         case WM_SIZE:
 114             event_flags |= VO_EVENT_RESIZE;
 115             GetClientRect(vo_window, &r);
 116             vo_dwidth = r.right;
 117             vo_dheight = r.bottom;
 118             break;
 119         case WM_WINDOWPOSCHANGING:
 120             if (vo_keepaspect && !vo_fs && WinID < 0) {
 121                 WINDOWPOS *wpos = (WINDOWPOS*)lParam;
 122                 int xborder, yborder;
 123                 r.left = r.top = 0;
 124                 r.right = wpos->cx;
 125                 r.bottom = wpos->cy;
 126                 AdjustWindowRect(&r, GetWindowLong(vo_window, GWL_STYLE), 0);
 127                 xborder = (r.right - r.left) - wpos->cx;
 128                 yborder = (r.bottom - r.top) - wpos->cy;
 129                 wpos->cx -= xborder; wpos->cy -= yborder;
 130                 aspect_fit(global_vo, &wpos->cx, &wpos->cy, wpos->cx, wpos->cy);
 131                 wpos->cx += xborder; wpos->cy += yborder;
 132             }
 133             return 0;
 134         case WM_CLOSE:
 135             mplayer_put_key(KEY_CLOSE_WIN);
 136             break;
 137         case WM_SYSCOMMAND:
 138             switch (wParam) {
 139                 case SC_SCREENSAVE:
 140                 case SC_MONITORPOWER:
 141                     mp_msg(MSGT_VO, MSGL_V, "vo: win32: killing screensaver\n");
 142                     return 0;
 143             }
 144             break;
 145         case WM_KEYDOWN:
 146             mpkey = lookup_keymap_table(vk_map, wParam);
 147             if (mpkey)
 148                 mplayer_put_key(mpkey);
 149             break;
 150         case WM_CHAR:
 151             mplayer_put_key(wParam);
 152             break;
 153         case WM_LBUTTONDOWN:
 154             if (!vo_nomouse_input && (vo_fs || (wParam & MK_CONTROL))) {
 155                 mplayer_put_key(MOUSE_BTN0);
 156                 break;
 157             }
 158             if (!vo_fs) {
 159                 ReleaseCapture();
 160                 SendMessage(hWnd, WM_NCLBUTTONDOWN, HTCAPTION, 0);
 161                 return 0;
 162             }
 163             break;
 164         case WM_MBUTTONDOWN:
 165             if (!vo_nomouse_input)
 166                 mplayer_put_key(MOUSE_BTN1);
 167             break;
 168         case WM_RBUTTONDOWN:
 169             if (!vo_nomouse_input)
 170                 mplayer_put_key(MOUSE_BTN2);
 171             break;
 172         case WM_MOUSEMOVE:
 173             vo_mouse_movement(global_vo, GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
 174             break;
 175         case WM_MOUSEWHEEL:
 176             if (!vo_nomouse_input) {
 177                 int x = GET_WHEEL_DELTA_WPARAM(wParam);
 178                 if (x > 0)
 179                     mplayer_put_key(MOUSE_BTN3);
 180                 else
 181                     mplayer_put_key(MOUSE_BTN4);
 182             }
 183             break;
 184         case WM_XBUTTONDOWN:
 185             if (!vo_nomouse_input) {
 186                 int x = HIWORD(wParam);
 187                 if (x == 1)
 188                     mplayer_put_key(MOUSE_BTN5);
 189                 else // if (x == 2)
 190                     mplayer_put_key(MOUSE_BTN6);
 191             }
 192             break;
 193     }
 194
 195     return DefWindowProc(hWnd, message, wParam, lParam);
 196 }
 197
 198 /**
 199  * \brief Dispatch incoming window events and handle them.
 200  *
 201  * This function should be placed inside libvo's function "check_events".
 202  *
 203  * Global libvo variables changed:
 204  * vo_dwidth:  new window client area width
 205  * vo_dheight: new window client area height
 206  *
 207  * \return int with these flags possibly set, take care to handle in the right order
 208  *         if it matters in your driver:
 209  *
 210  * VO_EVENT_RESIZE = The window was resized. If necessary reinit your
 211  *                   driver render context accordingly.
 212  * VO_EVENT_EXPOSE = The window was exposed. Call e.g. flip_frame() to redraw
 213  *                   the window if the movie is paused.
 214  */
 215 int vo_w32_check_events(void) {
 216     MSG msg;
 217     event_flags = 0;
 218     while (PeekMessage(&msg, 0, 0, 0, PM_REMOVE)) {
 219         TranslateMessage(&msg);
 220         DispatchMessage(&msg);
 221     }
 222     if (WinID >= 0) {
 223         BOOL res;
 224         RECT r;
 225         POINT p;
 226         res = GetClientRect(vo_window, &r);
 227         if (res && (r.right != vo_dwidth || r.bottom != vo_dheight)) {
 228             vo_dwidth = r.right; vo_dheight = r.bottom;
 229             event_flags |= VO_EVENT_RESIZE;
 230         }
 231         p.x = 0; p.y = 0;
 232         ClientToScreen(vo_window, &p);
 233         if (p.x != vo_dx || p.y != vo_dy) {
 234             vo_dx = p.x; vo_dy = p.y;
 235             event_flags |= VO_EVENT_MOVE;
 236         }
 237         res = GetClientRect(WIN_ID_TO_HWND(WinID), &r);
 238         if (res && (r.right != vo_dwidth || r.bottom != vo_dheight))
 239             MoveWindow(vo_window, 0, 0, r.right, r.bottom, FALSE);
 240         if (!IsWindow(WIN_ID_TO_HWND(WinID)))
 241             // Window has probably been closed, e.g. due to program crash
 242             mplayer_put_key(KEY_CLOSE_WIN);
 243     }
 244
 245     return event_flags;
 246 }
 247
 248 static BOOL CALLBACK mon_enum(HMONITOR hmon, HDC hdc, LPRECT r, LPARAM p) {
 249     // this defaults to the last screen if specified number does not exist
 250     xinerama_x = r->left;
 251     xinerama_y = r->top;
 252     vo_screenwidth = r->right - r->left;
 253     vo_screenheight = r->bottom - r->top;
 254     if (mon_cnt == xinerama_screen)
 255         return FALSE;
 256     mon_cnt++;
 257     return TRUE;
 258 }
 259
 260 /**
 261  * \brief Update screen information.
 262  *
 263  * This function should be called in libvo's "control" callback
 264  * with parameter VOCTRL_UPDATE_SCREENINFO.
 265  * Note that this also enables the new API where geometry and aspect
 266  * calculations are done in video_out.c:config_video_out
 267  *
 268  * Global libvo variables changed:
 269  * xinerama_x
 270  * xinerama_y
 271  * vo_screenwidth
 272  * vo_screenheight
 273  */
 274 void w32_update_xinerama_info(void) {
 275     xinerama_x = xinerama_y = 0;
 276     if (xinerama_screen < -1) {
 277         int tmp;
 278         xinerama_x = GetSystemMetrics(SM_XVIRTUALSCREEN);
 279         xinerama_y = GetSystemMetrics(SM_YVIRTUALSCREEN);
 280         tmp = GetSystemMetrics(SM_CXVIRTUALSCREEN);
 281         if (tmp) vo_screenwidth = tmp;
 282         tmp = GetSystemMetrics(SM_CYVIRTUALSCREEN);
 283         if (tmp) vo_screenheight = tmp;
 284     } else if (xinerama_screen == -1 && myMonitorFromWindow && myGetMonitorInfo) {
 285         MONITORINFO mi;
 286         HMONITOR m = myMonitorFromWindow(vo_window, MONITOR_DEFAULTTOPRIMARY);
 287         mi.cbSize = sizeof(mi);
 288         myGetMonitorInfo(m, &mi);
 289         xinerama_x = mi.rcMonitor.left;
 290         xinerama_y = mi.rcMonitor.top;
 291         vo_screenwidth = mi.rcMonitor.right - mi.rcMonitor.left;
 292         vo_screenheight = mi.rcMonitor.bottom - mi.rcMonitor.top;
 293     } else if (xinerama_screen > 0 && myEnumDisplayMonitors) {
 294         mon_cnt = 0;
 295         myEnumDisplayMonitors(NULL, NULL, mon_enum, 0);
 296     }
 297     aspect_save_screenres(vo_screenwidth, vo_screenheight);
 298 }
 299
 300 static void updateScreenProperties(void) {
 301     DEVMODE dm;
 302     dm.dmSize = sizeof dm;
 303     dm.dmDriverExtra = 0;
 304     dm.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
 305     if (!EnumDisplaySettings(0, ENUM_CURRENT_SETTINGS, &dm)) {
 306         mp_msg(MSGT_VO, MSGL_ERR, "vo: win32: unable to enumerate display settings!\n");
 307         return;
 308     }
 309
 310     vo_screenwidth = dm.dmPelsWidth;
 311     vo_screenheight = dm.dmPelsHeight;
 312     depthonscreen = dm.dmBitsPerPel;
 313     w32_update_xinerama_info();
 314 }
 315
 316 static void changeMode(void) {
 317     DEVMODE dm;
 318     dm.dmSize = sizeof dm;
 319     dm.dmDriverExtra = 0;
 320
 321     dm.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
 322     dm.dmBitsPerPel = depthonscreen;
 323     dm.dmPelsWidth = vo_screenwidth;
 324     dm.dmPelsHeight = vo_screenheight;
 325
 326     if (vo_vm) {
 327         int bestMode = -1;
 328         int bestScore = INT_MAX;
 329         int i;
 330         for (i = 0; EnumDisplaySettings(0, i, &dm); ++i) {
 331             int score = (dm.dmPelsWidth - o_dwidth) * (dm.dmPelsHeight - o_dheight);
 332             if (dm.dmBitsPerPel != depthonscreen) continue;
 333             if (dm.dmPelsWidth < o_dwidth) continue;
 334             if (dm.dmPelsHeight < o_dheight) continue;
 335
 336             if (score < bestScore) {
 337                 bestScore = score;
 338                 bestMode = i;
 339             }
 340         }
 341
 342         if (bestMode != -1)
 343             EnumDisplaySettings(0, bestMode, &dm);
 344
 345         ChangeDisplaySettings(&dm, CDS_FULLSCREEN);
 346     }
 347 }
 348
 349 static void resetMode(void) {
 350     if (vo_vm)
 351     ChangeDisplaySettings(0, 0);
 352 }
 353
 354 static int createRenderingContext(void) {
 355     HWND layer = HWND_NOTOPMOST;
 356     RECT r;
 357     int style = (vo_border && !vo_fs) ?
 358                 (WS_OVERLAPPEDWINDOW | WS_SIZEBOX) : WS_POPUP;
 359
 360     if (WinID >= 0)
 361         return 1;
 362
 363     if (vo_fs || vo_ontop) layer = HWND_TOPMOST;
 364     if (vo_fs) {
 365         changeMode();
 366         while (ShowCursor(0) >= 0) /**/ ;
 367     } else {
 368         resetMode();
 369         while (ShowCursor(1) < 0) /**/ ;
 370     }
 371     updateScreenProperties();
 372     ShowWindow(vo_window, SW_HIDE);
 373     SetWindowLong(vo_window, GWL_STYLE, style);
 374     if (vo_fs) {
 375         prev_width = vo_dwidth;
 376         prev_height = vo_dheight;
 377         prev_x = vo_dx;
 378         prev_y = vo_dy;
 379         vo_dwidth = vo_screenwidth;
 380         vo_dheight = vo_screenheight;
 381         vo_dx = xinerama_x;
 382         vo_dy = xinerama_y;
 383     } else {
 384         // make sure there are no "stale" resize events
 385         // that would set vo_d* to wrong values
 386         vo_w32_check_events();
 387         vo_dwidth = prev_width;
 388         vo_dheight = prev_height;
 389         vo_dx = prev_x;
 390         vo_dy = prev_y;
 391         // HACK around what probably is a windows focus bug:
 392         // when pressing 'f' on the console, then 'f' again to
 393         // return to windowed mode, any input into the video
 394         // window is lost forever.
 395         SetFocus(vo_window);
 396     }
 397     r.left = vo_dx;
 398     r.right = r.left + vo_dwidth;
 399     r.top = vo_dy;
 400     r.bottom = r.top + vo_dheight;
 401     AdjustWindowRect(&r, style, 0);
 402     SetWindowPos(vo_window, layer, r.left, r.top, r.right - r.left, r.bottom - r.top, SWP_SHOWWINDOW);
 403     return 1;
 404 }
 405
 406 /**
 407  * \brief Configure and show window on the screen.
 408  *
 409  * This function should be called in libvo's "config" callback.
 410  * It configures a window and shows it on the screen.
 411  *
 412  * Global libvo variables changed:
 413  * vo_fs
 414  * vo_vm
 415  *
 416  * \return 1 - Success, 0 - Failure
 417  */
 418 int vo_w32_config(uint32_t width, uint32_t height, uint32_t flags) {
 419     PIXELFORMATDESCRIPTOR pfd;
 420     int pf;
 421     HDC vo_hdc = vo_w32_get_dc(vo_window);
 422
 423     memset(&pfd, 0, sizeof pfd);
 424     pfd.nSize = sizeof pfd;
 425     pfd.nVersion = 1;
 426     pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
 427     if (flags & VOFLAG_STEREO)
 428         pfd.dwFlags |= PFD_STEREO;
 429     pfd.iPixelType = PFD_TYPE_RGBA;
 430     pfd.cColorBits = 24;
 431     pfd.iLayerType = PFD_MAIN_PLANE;
 432     pf = ChoosePixelFormat(vo_hdc, &pfd);
 433     if (!pf) {
 434         mp_msg(MSGT_VO, MSGL_ERR, "vo: win32: unable to select a valid pixel format!\n");
 435         vo_w32_release_dc(vo_window, vo_hdc);
 436         return 0;
 437     }
 438
 439     SetPixelFormat(vo_hdc, pf, &pfd);
 440     vo_w32_release_dc(vo_window, vo_hdc);
 441
 442     // we already have a fully initialized window, so nothing needs to be done
 443     if (flags & VOFLAG_HIDDEN)
 444         return 1;
 445     // store original size for videomode switching
 446     o_dwidth = width;
 447     o_dheight = height;
 448
 449     if (WinID < 0) {
 450         // the desired size is ignored in wid mode, it always matches the window size.
 451         prev_width = vo_dwidth = width;
 452         prev_height = vo_dheight = height;
 453         prev_x = vo_dx;
 454         prev_y = vo_dy;
 455     }
 456
 457     vo_fs = flags & VOFLAG_FULLSCREEN;
 458     vo_vm = flags & VOFLAG_MODESWITCHING;
 459     return createRenderingContext();
 460 }
 461
 462 /**
 463  * \brief return the name of the selected device if it is indepedant
 464  * \return pointer to string, must be freed.
 465  */
 466 static char *get_display_name(void) {
 467     DISPLAY_DEVICE disp;
 468     disp.cb = sizeof(disp);
 469     EnumDisplayDevices(NULL, vo_adapter_num, &disp, 0);
 470     if (disp.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)
 471         return NULL;
 472     return strdup(disp.DeviceName);
 473 }
 474
 475 /**
 476  * \brief Initialize w32_common framework.
 477  *
 478  * The first function that should be called from the w32_common framework.
 479  * It handles window creation on the screen with proper title and attributes.
 480  * It also initializes the framework's internal variables. The function should
 481  * be called after your own preinit initialization and you shouldn't do any
 482  * window management on your own.
 483  *
 484  * Global libvo variables changed:
 485  * vo_w32_window
 486  * vo_screenwidth
 487  * vo_screenheight
 488  *
 489  * \return 1 = Success, 0 = Failure
 490  */
 491 int vo_w32_init(void) {
 492     HICON mplayerIcon = 0;
 493     char exedir[MAX_PATH];
 494     HINSTANCE user32;
 495     char *dev;
 496
 497     if (vo_window)
 498         return 1;
 499
 500     hInstance = GetModuleHandle(0);
 501
 502     if (GetModuleFileName(0, exedir, MAX_PATH))
 503         mplayerIcon = ExtractIcon(hInstance, exedir, 0);
 504     if (!mplayerIcon)
 505         mplayerIcon = LoadIcon(0, IDI_APPLICATION);
 506
 507   {
 508     WNDCLASSEX wcex = { sizeof wcex, CS_OWNDC | CS_DBLCLKS, WndProc, 0, 0, hInstance, mplayerIcon, LoadCursor(0, IDC_ARROW), NULL, 0, classname, mplayerIcon };
 509
 510     if (!RegisterClassEx(&wcex)) {
 511         mp_msg(MSGT_VO, MSGL_ERR, "vo: win32: unable to register window class!\n");
 512         return 0;
 513     }
 514   }
 515
 516     if (WinID >= 0)
 517     {
 518         RECT r;
 519         GetClientRect(WIN_ID_TO_HWND(WinID), &r);
 520         vo_dwidth = r.right; vo_dheight = r.bottom;
 521         vo_window = CreateWindowEx(WS_EX_NOPARENTNOTIFY, classname, classname,
 522                      WS_CHILD | WS_VISIBLE, 0, 0, vo_dwidth, vo_dheight,
 523                      WIN_ID_TO_HWND(WinID), 0, hInstance, 0);
 524         EnableWindow(vo_window, 0);
 525     } else
 526         vo_window = CreateWindowEx(0, classname, classname,
 527                       vo_border ? (WS_OVERLAPPEDWINDOW | WS_SIZEBOX) : WS_POPUP,
 528                       CW_USEDEFAULT, 0, 100, 100, 0, 0, hInstance, 0);
 529     if (!vo_window) {
 530         mp_msg(MSGT_VO, MSGL_ERR, "vo: win32: unable to create window!\n");
 531         return 0;
 532     }
 533
 534     myMonitorFromWindow = NULL;
 535     myGetMonitorInfo = NULL;
 536     myEnumDisplayMonitors = NULL;
 537     user32 = GetModuleHandle("user32.dll");
 538     if (user32) {
 539         myMonitorFromWindow = (void *)GetProcAddress(user32, "MonitorFromWindow");
 540         myGetMonitorInfo = GetProcAddress(user32, "GetMonitorInfoA");
 541         myEnumDisplayMonitors = GetProcAddress(user32, "EnumDisplayMonitors");
 542     }
 543     dev_hdc = 0;
 544     dev = get_display_name();
 545     if (dev) dev_hdc = CreateDC(dev, NULL, NULL, NULL);
 546     free(dev);
 547     updateScreenProperties();
 548
 549     mp_msg(MSGT_VO, MSGL_V, "vo: win32: running at %dx%d with depth %d\n", vo_screenwidth, vo_screenheight, depthonscreen);
 550
 551     return 1;
 552 }
 553
 554 /**
 555  * \brief Toogle fullscreen / windowed mode.
 556  *
 557  * Should be called on VOCTRL_FULLSCREEN event. The window is
 558  * always resized after this call, so the rendering context
 559  * should be reinitialized with the new dimensions.
 560  * It is unspecified if vo_check_events will create a resize
 561  * event in addition or not.
 562  *
 563  * Global libvo variables changed:
 564  * vo_dwidth
 565  * vo_dheight
 566  * vo_fs
 567  */
 568
 569 void vo_w32_fullscreen(void) {
 570     vo_fs = !vo_fs;
 571
 572     createRenderingContext();
 573 }
 574
 575 /**
 576  * \brief Toogle window border attribute.
 577  *
 578  * Should be called on VOCTRL_BORDER event.
 579  *
 580  * Global libvo variables changed:
 581  * vo_border
 582  */
 583 void vo_w32_border(void) {
 584     vo_border = !vo_border;
 585     createRenderingContext();
 586 }
 587
 588 /**
 589  * \brief Toogle window ontop attribute.
 590  *
 591  * Should be called on VOCTRL_ONTOP event.
 592  *
 593  * Global libvo variables changed:
 594  * vo_ontop
 595  */
 596 void vo_w32_ontop( void )
 597 {
 598     vo_ontop = !vo_ontop;
 599     if (!vo_fs) {
 600         createRenderingContext();
 601     }
 602 }
 603
 604 /**
 605  * \brief Uninitialize w32_common framework.
 606  *
 607  * Should be called last in video driver's uninit function. First release
 608  * anything built on top of the created window e.g. rendering context inside
 609  * and call vo_w32_uninit at the end.
 610  */
 611 void vo_w32_uninit(void) {
 612     mp_msg(MSGT_VO, MSGL_V, "vo: win32: uninit\n");
 613     resetMode();
 614     ShowCursor(1);
 615     depthonscreen = 0;
 616     if (dev_hdc) DeleteDC(dev_hdc);
 617     dev_hdc = 0;
 618     DestroyWindow(vo_window);
 619     vo_window = 0;
 620     UnregisterClass(classname, 0);
 621 }
 622
 623 /**
 624  * \brief get a device context to draw in
 625  *
 626  * \param wnd window the DC should belong to if it makes sense
 627  */
 628 HDC vo_w32_get_dc(HWND wnd) {
 629     if (dev_hdc) return dev_hdc;
 630     return GetDC(wnd);
 631 }
 632
 633 /**
 634  * \brief release a device context
 635  *
 636  * \param wnd window the DC probably belongs to
 637  */
 638 void vo_w32_release_dc(HWND wnd, HDC dc) {
 639     if (dev_hdc) return;
 640     ReleaseDC(wnd, dc);
 641 }