git.sesse.net Git - vlc/blob - modules/video_output/msw/common.c

   1 /*****************************************************************************
   2  * common.c:
   3  *****************************************************************************
   4  * Copyright (C) 2001-2009 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Gildas Bazin <gbazin@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24
  25 /*****************************************************************************
  26  * Preamble: This file contains the functions related to the creation of
  27  *             a window and the handling of its messages (events).
  28  *****************************************************************************/
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32 #include <assert.h>
  33
  34 #include <vlc_common.h>
  35 #include <vlc_vout_display.h>
  36 #include <vlc_vout_window.h>
  37
  38 #include <windows.h>
  39 #include <windowsx.h>
  40 #include <shellapi.h>
  41
  42 #ifdef MODULE_NAME_IS_directx
  43 #include <ddraw.h>
  44 #endif
  45 #ifdef MODULE_NAME_IS_direct3d
  46 #include <d3d9.h>
  47 #endif
  48 #ifdef MODULE_NAME_IS_glwin32
  49 #include "../opengl.h"
  50 #endif
  51
  52 #include "common.h"
  53
  54 #ifndef UNDER_CE
  55 #include <vlc_windows_interfaces.h>
  56 #endif
  57
  58 #ifdef UNDER_CE
  59 #include <aygshell.h>
  60     //WINSHELLAPI BOOL WINAPI SHFullScreen(HWND hwndRequester, DWORD dwState);
  61 #endif
  62
  63 static void CommonChangeThumbnailClip(vout_display_t *, bool show);
  64 static int CommonControlSetFullscreen(vout_display_t *, bool is_fullscreen);
  65
  66 static void DisableScreensaver(vout_display_t *);
  67 static void RestoreScreensaver(vout_display_t *);
  68
  69 /* */
  70 int CommonInit(vout_display_t *vd)
  71 {
  72     vout_display_sys_t *sys = vd->sys;
  73
  74     sys->hwnd      = NULL;
  75     sys->hvideownd = NULL;
  76     sys->hparent   = NULL;
  77     sys->hfswnd    = NULL;
  78     sys->changes   = 0;
  79     SetRectEmpty(&sys->rect_display);
  80     SetRectEmpty(&sys->rect_parent);
  81     sys->is_first_display = true;
  82     sys->is_on_top = false;
  83
  84     var_Create(vd, "video-title", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
  85     var_Create(vd, "video-deco", VLC_VAR_BOOL | VLC_VAR_DOINHERIT);
  86
  87     /* */
  88     sys->event = EventThreadCreate(vd);
  89     if (!sys->event)
  90         return VLC_EGENERIC;
  91
  92     event_cfg_t cfg;
  93     memset(&cfg, 0, sizeof(cfg));
  94 #ifdef MODULE_NAME_IS_direct3d
  95     cfg.use_desktop = sys->use_desktop;
  96 #endif
  97 #ifdef MODULE_NAME_IS_directx
  98     cfg.use_overlay = sys->use_overlay;
  99 #endif
 100     cfg.win.type   = VOUT_WINDOW_TYPE_HWND;
 101     cfg.win.x      = var_InheritInteger(vd, "video-x");
 102     cfg.win.y      = var_InheritInteger(vd, "video-y");
 103     cfg.win.width  = vd->cfg->display.width;
 104     cfg.win.height = vd->cfg->display.height;
 105
 106     event_hwnd_t hwnd;
 107     if (EventThreadStart(sys->event, &hwnd, &cfg))
 108         return VLC_EGENERIC;
 109
 110     sys->parent_window = hwnd.parent_window;
 111     sys->hparent       = hwnd.hparent;
 112     sys->hwnd          = hwnd.hwnd;
 113     sys->hvideownd     = hwnd.hvideownd;
 114     sys->hfswnd        = hwnd.hfswnd;
 115
 116     if (vd->cfg->is_fullscreen) {
 117         if (CommonControlSetFullscreen(vd, true))
 118             vout_display_SendEventFullscreen(vd, false);
 119     }
 120
 121     /* Why not with glwin32 */
 122 #if !defined(UNDER_CE) && !defined(MODULE_NAME_IS_glwin32)
 123     var_Create(vd, "disable-screensaver", VLC_VAR_BOOL | VLC_VAR_DOINHERIT);
 124     DisableScreensaver (vd);
 125 #endif
 126
 127     return VLC_SUCCESS;
 128 }
 129
 130 /* */
 131 void CommonClean(vout_display_t *vd)
 132 {
 133     vout_display_sys_t *sys = vd->sys;
 134
 135     if (sys->event) {
 136         CommonChangeThumbnailClip(vd, false);
 137         EventThreadStop(sys->event);
 138         EventThreadDestroy(sys->event);
 139     }
 140
 141 #if !defined(UNDER_CE) && !defined(MODULE_NAME_IS_glwin32)
 142     RestoreScreensaver(vd);
 143 #endif
 144 }
 145
 146 void CommonManage(vout_display_t *vd)
 147 {
 148     vout_display_sys_t *sys = vd->sys;
 149
 150     /* We used to call the Win32 PeekMessage function here to read the window
 151      * messages. But since window can stay blocked into this function for a
 152      * long time (for example when you move your window on the screen), I
 153      * decided to isolate PeekMessage in another thread. */
 154
 155     /* If we do not control our window, we check for geometry changes
 156      * ourselves because the parent might not send us its events. */
 157     if (sys->hparent) {
 158         RECT rect_parent;
 159         POINT point;
 160
 161         /* Check if the parent window has resized or moved */
 162         GetClientRect(sys->hparent, &rect_parent);
 163         point.x = point.y = 0;
 164         ClientToScreen(sys->hparent, &point);
 165         OffsetRect(&rect_parent, point.x, point.y);
 166
 167         if (!EqualRect(&rect_parent, &sys->rect_parent)) {
 168             sys->rect_parent = rect_parent;
 169
 170             /* This code deals with both resize and move
 171              *
 172              * For most drivers(direct3d, gdi, opengl), move is never
 173              * an issue. The surface automatically gets moved together
 174              * with the associated window (hvideownd)
 175              *
 176              * For directx, it is still important to call UpdateRects
 177              * on a move of the parent window, even if no resize occured
 178              */
 179             SetWindowPos(sys->hwnd, 0, 0, 0,
 180                          rect_parent.right - rect_parent.left,
 181                          rect_parent.bottom - rect_parent.top,
 182                          SWP_NOZORDER);
 183
 184             UpdateRects(vd, NULL, NULL, true);
 185         }
 186     }
 187
 188     /* HasMoved means here resize or move */
 189     if (EventThreadGetAndResetHasMoved(sys->event))
 190         UpdateRects(vd, NULL, NULL, false);
 191 }
 192
 193 /**
 194  * It ensures that the video window is shown after the first picture
 195  * is displayed.
 196  */
 197 void CommonDisplay(vout_display_t *vd)
 198 {
 199     vout_display_sys_t *sys = vd->sys;
 200
 201     if (!sys->is_first_display)
 202         return;
 203
 204     /* Video window is initially hidden, show it now since we got a
 205      * picture to show.
 206      */
 207     SetWindowPos(sys->hvideownd, 0, 0, 0, 0, 0,
 208                  SWP_ASYNCWINDOWPOS|
 209                  SWP_FRAMECHANGED|
 210                  SWP_SHOWWINDOW|
 211                  SWP_NOMOVE|
 212                  SWP_NOSIZE|
 213                  SWP_NOZORDER);
 214     sys->is_first_display = false;
 215 }
 216
 217 void AlignRect(RECT *r, int align_boundary, int align_size)
 218 {
 219     if (align_boundary)
 220         r->left = (r->left + align_boundary/2) & ~align_boundary;
 221     if (align_size)
 222         r->right = ((r->right - r->left + align_size/2) & ~align_size) + r->left;
 223 }
 224
 225 /* */
 226 static void CommonChangeThumbnailClip(vout_display_t *vd, bool show)
 227 {
 228 #ifndef UNDER_CE
 229     vout_display_sys_t *sys = vd->sys;
 230
 231     /* Windows 7 taskbar thumbnail code */
 232     OSVERSIONINFO winVer;
 233     winVer.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 234     if (!GetVersionEx(&winVer) || winVer.dwMajorVersion <= 5)
 235         return;
 236
 237     CoInitialize(0);
 238
 239     LPTASKBARLIST3 taskbl;
 240     if (S_OK == CoCreateInstance(&clsid_ITaskbarList,
 241                                  NULL, CLSCTX_INPROC_SERVER,
 242                                  &IID_ITaskbarList3,
 243                                  &taskbl)) {
 244         taskbl->vt->HrInit(taskbl);
 245
 246         HWND hroot = GetAncestor(sys->hwnd,GA_ROOT);
 247         RECT relative;
 248         if (show) {
 249             RECT video, parent;
 250             GetWindowRect(sys->hvideownd, &video);
 251             GetWindowRect(hroot, &parent);
 252             relative.left   = video.left   - parent.left - 8;
 253             relative.top    = video.top    - parent.top - 10;
 254
 255             relative.right  = video.right  - video.left + relative.left;
 256             relative.bottom = video.bottom - video.top  + relative.top - 25;
 257         }
 258         if (S_OK != taskbl->vt->SetThumbnailClip(taskbl, hroot,
 259                                                  show ? &relative : NULL))
 260             msg_Err(vd, "SetThumbNailClip failed");
 261
 262         taskbl->vt->Release(taskbl);
 263     }
 264     CoUninitialize();
 265 #endif
 266 }
 267
 268 /*****************************************************************************
 269  * UpdateRects: update clipping rectangles
 270  *****************************************************************************
 271  * This function is called when the window position or size are changed, and
 272  * its job is to update the source and destination RECTs used to display the
 273  * picture.
 274  *****************************************************************************/
 275 void UpdateRects(vout_display_t *vd,
 276                   const vout_display_cfg_t *cfg,
 277                   const video_format_t *source,
 278                   bool is_forced)
 279 {
 280     vout_display_sys_t *sys = vd->sys;
 281 #define rect_src sys->rect_src
 282 #define rect_src_clipped sys->rect_src_clipped
 283 #define rect_dest sys->rect_dest
 284 #define rect_dest_clipped sys->rect_dest_clipped
 285
 286     RECT  rect;
 287     POINT point;
 288
 289     /* */
 290     if (!cfg)
 291         cfg = vd->cfg;
 292     if (!source)
 293         source = &vd->source;
 294
 295     /* Retrieve the window size */
 296     GetClientRect(sys->hwnd, &rect);
 297
 298     /* Retrieve the window position */
 299     point.x = point.y = 0;
 300     ClientToScreen(sys->hwnd, &point);
 301
 302     /* If nothing changed, we can return */
 303     bool has_moved;
 304     bool is_resized;
 305     EventThreadUpdateWindowPosition(sys->event, &has_moved, &is_resized,
 306                                     point.x, point.y,
 307                                     rect.right, rect.bottom);
 308     if (is_resized)
 309         vout_display_SendEventDisplaySize(vd, rect.right, rect.bottom, cfg->is_fullscreen);
 310     if (!is_forced && !has_moved && !is_resized )
 311         return;
 312
 313     /* Update the window position and size */
 314     vout_display_cfg_t place_cfg = *cfg;
 315     place_cfg.display.width  = rect.right;
 316     place_cfg.display.height = rect.bottom;
 317
 318     vout_display_place_t place;
 319     vout_display_PlacePicture(&place, source, &place_cfg, false);
 320
 321     EventThreadUpdateSourceAndPlace(sys->event, source, &place);
 322 #if defined(MODULE_NAME_IS_wingapi)
 323     if (place.width != vd->fmt.i_width || place.height != vd->fmt.i_height)
 324         vout_display_SendEventPicturesInvalid(vd);
 325 #endif
 326
 327     if (sys->hvideownd)
 328         SetWindowPos(sys->hvideownd, 0,
 329                      place.x, place.y, place.width, place.height,
 330                      SWP_NOCOPYBITS|SWP_NOZORDER|SWP_ASYNCWINDOWPOS);
 331
 332     /* Destination image position and dimensions */
 333 #if defined(MODULE_NAME_IS_direct3d)
 334     rect_dest.left   = 0;
 335     rect_dest.right  = place.width;
 336     rect_dest.top    = 0;
 337     rect_dest.bottom = place.height;
 338 #else
 339     rect_dest.left = point.x + place.x;
 340     rect_dest.right = rect_dest.left + place.width;
 341     rect_dest.top = point.y + place.y;
 342     rect_dest.bottom = rect_dest.top + place.height;
 343
 344 #ifdef MODULE_NAME_IS_directx
 345     /* Apply overlay hardware constraints */
 346     if (sys->use_overlay)
 347         AlignRect(&rect_dest, sys->i_align_dest_boundary, sys->i_align_dest_size);
 348 #endif
 349
 350 #endif
 351
 352 #if defined(MODULE_NAME_IS_directx) || defined(MODULE_NAME_IS_direct3d)
 353     /* UpdateOverlay directdraw function doesn't automatically clip to the
 354      * display size so we need to do it otherwise it will fail
 355      * It is also needed for d3d to avoid exceding our surface size */
 356
 357     /* Clip the destination window */
 358     if (!IntersectRect(&rect_dest_clipped, &rect_dest,
 359                        &sys->rect_display)) {
 360         SetRectEmpty(&rect_src_clipped);
 361         goto exit;
 362     }
 363
 364 #ifndef NDEBUG
 365     msg_Dbg(vd, "DirectXUpdateRects image_dst_clipped coords:"
 366                 " %li,%li,%li,%li",
 367                 rect_dest_clipped.left, rect_dest_clipped.top,
 368                 rect_dest_clipped.right, rect_dest_clipped.bottom);
 369 #endif
 370
 371 #else
 372
 373     /* AFAIK, there are no clipping constraints in Direct3D, OpenGL and GDI */
 374     rect_dest_clipped = rect_dest;
 375
 376 #endif
 377
 378     /* the 2 following lines are to fix a bug when clicking on the desktop */
 379     if ((rect_dest_clipped.right - rect_dest_clipped.left) == 0 ||
 380         (rect_dest_clipped.bottom - rect_dest_clipped.top) == 0) {
 381         SetRectEmpty(&rect_src_clipped);
 382         goto exit;
 383     }
 384
 385     /* src image dimensions */
 386     rect_src.left   = 0;
 387     rect_src.top    = 0;
 388     rect_src.right  = source->i_width;
 389     rect_src.bottom = source->i_height;
 390
 391     /* Clip the source image */
 392     rect_src_clipped.left = source->i_x_offset +
 393       (rect_dest_clipped.left - rect_dest.left) *
 394       source->i_visible_width / (rect_dest.right - rect_dest.left);
 395     rect_src_clipped.right = source->i_x_offset +
 396       source->i_visible_width -
 397       (rect_dest.right - rect_dest_clipped.right) *
 398       source->i_visible_width / (rect_dest.right - rect_dest.left);
 399     rect_src_clipped.top = source->i_y_offset +
 400       (rect_dest_clipped.top - rect_dest.top) *
 401       source->i_visible_height / (rect_dest.bottom - rect_dest.top);
 402     rect_src_clipped.bottom = source->i_y_offset +
 403       source->i_visible_height -
 404       (rect_dest.bottom - rect_dest_clipped.bottom) *
 405       source->i_visible_height / (rect_dest.bottom - rect_dest.top);
 406
 407 #ifdef MODULE_NAME_IS_directx
 408     /* Apply overlay hardware constraints */
 409     if (sys->use_overlay)
 410         AlignRect(&rect_src_clipped, sys->i_align_src_boundary, sys->i_align_src_size);
 411 #elif defined(MODULE_NAME_IS_direct3d)
 412     /* Needed at least with YUV content */
 413     rect_src_clipped.left &= ~1;
 414     rect_src_clipped.right &= ~1;
 415     rect_src_clipped.top &= ~1;
 416     rect_src_clipped.bottom &= ~1;
 417 #endif
 418
 419 #ifndef NDEBUG
 420     msg_Dbg(vd, "DirectXUpdateRects image_src_clipped"
 421                 " coords: %li,%li,%li,%li",
 422                 rect_src_clipped.left, rect_src_clipped.top,
 423                 rect_src_clipped.right, rect_src_clipped.bottom);
 424 #endif
 425
 426 #ifdef MODULE_NAME_IS_directx
 427     /* The destination coordinates need to be relative to the current
 428      * directdraw primary surface (display) */
 429     rect_dest_clipped.left -= sys->rect_display.left;
 430     rect_dest_clipped.right -= sys->rect_display.left;
 431     rect_dest_clipped.top -= sys->rect_display.top;
 432     rect_dest_clipped.bottom -= sys->rect_display.top;
 433 #endif
 434
 435     CommonChangeThumbnailClip(vd, true);
 436
 437 exit:
 438     /* Signal the change in size/position */
 439     sys->changes |= DX_POSITION_CHANGE;
 440
 441 #undef rect_src
 442 #undef rect_src_clipped
 443 #undef rect_dest
 444 #undef rect_dest_clipped
 445 }
 446
 447 static int CommonControlSetFullscreen(vout_display_t *vd, bool is_fullscreen)
 448 {
 449     vout_display_sys_t *sys = vd->sys;
 450
 451 #ifdef MODULE_NAME_IS_direct3d
 452     if (sys->use_desktop && is_fullscreen)
 453         return VLC_EGENERIC;
 454 #endif
 455
 456     /* */
 457     if (sys->parent_window)
 458         return vout_window_SetFullScreen(sys->parent_window, is_fullscreen);
 459
 460     /* */
 461     HWND hwnd = sys->hparent && sys->hfswnd ? sys->hfswnd : sys->hwnd;
 462
 463     /* Save the current windows placement/placement to restore
 464        when fullscreen is over */
 465     WINDOWPLACEMENT window_placement;
 466     window_placement.length = sizeof(WINDOWPLACEMENT);
 467     GetWindowPlacement(hwnd, &window_placement);
 468
 469     if (is_fullscreen) {
 470         msg_Dbg(vd, "entering fullscreen mode");
 471
 472         /* Change window style, no borders and no title bar */
 473         SetWindowLong(hwnd, GWL_STYLE, WS_CLIPCHILDREN | WS_VISIBLE);
 474
 475         if (sys->hparent) {
 476 #ifdef UNDER_CE
 477             POINT point = {0,0};
 478             RECT rect;
 479             ClientToScreen(sys->hwnd, &point);
 480             GetClientRect(sys->hwnd, &rect);
 481             SetWindowPos(hwnd, 0, point.x, point.y,
 482                          rect.right, rect.bottom,
 483                          SWP_NOZORDER|SWP_FRAMECHANGED);
 484 #else
 485             /* Retrieve current window position so fullscreen will happen
 486             *on the right screen */
 487             HMONITOR hmon = MonitorFromWindow(sys->hparent,
 488                                               MONITOR_DEFAULTTONEAREST);
 489             MONITORINFO mi;
 490             mi.cbSize = sizeof(MONITORINFO);
 491             if (GetMonitorInfo(hmon, &mi))
 492                 SetWindowPos(hwnd, 0,
 493                              mi.rcMonitor.left,
 494                              mi.rcMonitor.top,
 495                              mi.rcMonitor.right - mi.rcMonitor.left,
 496                              mi.rcMonitor.bottom - mi.rcMonitor.top,
 497                              SWP_NOZORDER|SWP_FRAMECHANGED);
 498 #endif
 499         } else {
 500             /* Maximize non embedded window */
 501             ShowWindow(hwnd, SW_SHOWMAXIMIZED);
 502         }
 503
 504         if (sys->hparent) {
 505             /* Hide the previous window */
 506             RECT rect;
 507             GetClientRect(hwnd, &rect);
 508             SetParent(sys->hwnd, hwnd);
 509             SetWindowPos(sys->hwnd, 0, 0, 0,
 510                          rect.right, rect.bottom,
 511                          SWP_NOZORDER|SWP_FRAMECHANGED);
 512
 513 #ifdef UNDER_CE
 514             HWND topLevelParent = GetParent(sys->hparent);
 515 #else
 516             HWND topLevelParent = GetAncestor(sys->hparent, GA_ROOT);
 517 #endif
 518             ShowWindow(topLevelParent, SW_HIDE);
 519         }
 520         SetForegroundWindow(hwnd);
 521     } else {
 522         msg_Dbg(vd, "leaving fullscreen mode");
 523
 524         /* Change window style, no borders and no title bar */
 525         SetWindowLong(hwnd, GWL_STYLE, EventThreadGetWindowStyle(sys->event));
 526
 527         if (sys->hparent) {
 528             RECT rect;
 529             GetClientRect(sys->hparent, &rect);
 530             SetParent(sys->hwnd, sys->hparent);
 531             SetWindowPos(sys->hwnd, 0, 0, 0,
 532                          rect.right, rect.bottom,
 533                          SWP_NOZORDER|SWP_FRAMECHANGED);
 534
 535 #ifdef UNDER_CE
 536             HWND topLevelParent = GetParent(sys->hparent);
 537 #else
 538             HWND topLevelParent = GetAncestor(sys->hparent, GA_ROOT);
 539 #endif
 540             ShowWindow(topLevelParent, SW_SHOW);
 541             SetForegroundWindow(sys->hparent);
 542             ShowWindow(hwnd, SW_HIDE);
 543         } else {
 544             /* return to normal window for non embedded vout */
 545             SetWindowPlacement(hwnd, &window_placement);
 546             ShowWindow(hwnd, SW_SHOWNORMAL);
 547         }
 548     }
 549     return VLC_SUCCESS;
 550 }
 551
 552 int CommonControl(vout_display_t *vd, int query, va_list args)
 553 {
 554     vout_display_sys_t *sys = vd->sys;
 555
 556     switch (query) {
 557     case VOUT_DISPLAY_CHANGE_DISPLAY_SIZE:   /* const vout_display_cfg_t *p_cfg, int is_forced */
 558     case VOUT_DISPLAY_CHANGE_DISPLAY_FILLED: /* const vout_display_cfg_t *p_cfg */
 559     case VOUT_DISPLAY_CHANGE_ZOOM:           /* const vout_display_cfg_t *p_cfg */
 560     case VOUT_DISPLAY_CHANGE_SOURCE_ASPECT:  /* const video_format_t *p_source */
 561     case VOUT_DISPLAY_CHANGE_SOURCE_CROP: {  /* const video_format_t *p_source */
 562         const vout_display_cfg_t *cfg;
 563         const video_format_t *source;
 564         bool  is_forced = true;
 565         if (query == VOUT_DISPLAY_CHANGE_SOURCE_CROP ||
 566             query == VOUT_DISPLAY_CHANGE_SOURCE_ASPECT) {
 567             cfg    = vd->cfg;
 568             source = va_arg(args, const video_format_t *);
 569         } else {
 570             cfg    = va_arg(args, const vout_display_cfg_t *);
 571             source = &vd->source;
 572             if (query == VOUT_DISPLAY_CHANGE_DISPLAY_SIZE)
 573                 is_forced = va_arg(args, int);
 574         }
 575         if (query == VOUT_DISPLAY_CHANGE_DISPLAY_SIZE && is_forced) {
 576             /* Update dimensions */
 577             if (sys->parent_window) {
 578                 vout_window_SetSize(sys->parent_window, cfg->display.width, cfg->display.height);
 579             } else {
 580                 RECT rect_window;
 581                 rect_window.top    = 0;
 582                 rect_window.left   = 0;
 583                 rect_window.right  = cfg->display.width;
 584                 rect_window.bottom = cfg->display.height;
 585                 AdjustWindowRect(&rect_window, EventThreadGetWindowStyle(sys->event), 0);
 586
 587                 SetWindowPos(sys->hwnd, 0, 0, 0,
 588                              rect_window.right - rect_window.left,
 589                              rect_window.bottom - rect_window.top, SWP_NOMOVE);
 590             }
 591         }
 592         UpdateRects(vd, cfg, source, is_forced);
 593         return VLC_SUCCESS;
 594     }
 595     case VOUT_DISPLAY_CHANGE_WINDOW_STATE: {       /* unsigned state */
 596         const unsigned state = va_arg(args, unsigned);
 597         const bool is_on_top = (state & VOUT_WINDOW_STATE_ABOVE) != 0;
 598 #ifdef MODULE_NAME_IS_direct3d
 599         if (sys->use_desktop && is_on_top)
 600             return VLC_EGENERIC;
 601 #endif
 602         if (sys->parent_window) {
 603             if (vout_window_SetState(sys->parent_window, state))
 604                 return VLC_EGENERIC;
 605         } else {
 606             HMENU hMenu = GetSystemMenu(sys->hwnd, FALSE);
 607
 608             if (is_on_top && !(GetWindowLong(sys->hwnd, GWL_EXSTYLE) & WS_EX_TOPMOST)) {
 609                 CheckMenuItem(hMenu, IDM_TOGGLE_ON_TOP, MF_BYCOMMAND | MFS_CHECKED);
 610                 SetWindowPos(sys->hwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
 611             } else if (!is_on_top && (GetWindowLong(sys->hwnd, GWL_EXSTYLE) & WS_EX_TOPMOST)) {
 612                 CheckMenuItem(hMenu, IDM_TOGGLE_ON_TOP, MF_BYCOMMAND | MFS_UNCHECKED);
 613                 SetWindowPos(sys->hwnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOSIZE|SWP_NOMOVE);
 614             }
 615         }
 616         sys->is_on_top = is_on_top;
 617         return VLC_SUCCESS;
 618     }
 619     case VOUT_DISPLAY_CHANGE_FULLSCREEN: {   /* const vout_display_cfg_t *p_cfg */
 620         const vout_display_cfg_t *cfg = va_arg(args, const vout_display_cfg_t *);
 621         return CommonControlSetFullscreen(vd, cfg->is_fullscreen);
 622     }
 623
 624     case VOUT_DISPLAY_HIDE_MOUSE:
 625         EventThreadMouseHide(sys->event);
 626         return VLC_SUCCESS;
 627     case VOUT_DISPLAY_RESET_PICTURES:
 628         assert(0);
 629     default:
 630         return VLC_EGENERIC;
 631     }
 632 }
 633
 634 #ifndef UNDER_CE
 635 static void DisableScreensaver(vout_display_t *vd)
 636 {
 637     vout_display_sys_t *sys = vd->sys;
 638
 639     /* disable screensaver by temporarily changing system settings */
 640     sys->i_spi_lowpowertimeout = 0;
 641     sys->i_spi_powerofftimeout = 0;
 642     sys->i_spi_screensavetimeout = 0;
 643     if (var_GetBool(vd, "disable-screensaver")) {
 644         msg_Dbg(vd, "disabling screen saver");
 645         SystemParametersInfo(SPI_GETLOWPOWERTIMEOUT, 0,
 646                              &sys->i_spi_lowpowertimeout, 0);
 647         if (0 != sys->i_spi_lowpowertimeout) {
 648             SystemParametersInfo(SPI_SETLOWPOWERTIMEOUT, 0, NULL, 0);
 649         }
 650         SystemParametersInfo(SPI_GETPOWEROFFTIMEOUT, 0,
 651                              &sys->i_spi_powerofftimeout, 0);
 652         if (0 != sys->i_spi_powerofftimeout) {
 653             SystemParametersInfo(SPI_SETPOWEROFFTIMEOUT, 0, NULL, 0);
 654         }
 655         SystemParametersInfo(SPI_GETSCREENSAVETIMEOUT, 0,
 656                              &sys->i_spi_screensavetimeout, 0);
 657         if (0 != sys->i_spi_screensavetimeout) {
 658             SystemParametersInfo(SPI_SETSCREENSAVETIMEOUT, 0, NULL, 0);
 659         }
 660     }
 661 }
 662
 663 static void RestoreScreensaver(vout_display_t *vd)
 664 {
 665     vout_display_sys_t *sys = vd->sys;
 666
 667     /* restore screensaver system settings */
 668     if (0 != sys->i_spi_lowpowertimeout) {
 669         SystemParametersInfo(SPI_SETLOWPOWERTIMEOUT,
 670                              sys->i_spi_lowpowertimeout, NULL, 0);
 671     }
 672     if (0 != sys->i_spi_powerofftimeout) {
 673         SystemParametersInfo(SPI_SETPOWEROFFTIMEOUT,
 674                              sys->i_spi_powerofftimeout, NULL, 0);
 675     }
 676     if (0 != sys->i_spi_screensavetimeout) {
 677         SystemParametersInfo(SPI_SETSCREENSAVETIMEOUT,
 678                              sys->i_spi_screensavetimeout, NULL, 0);
 679     }
 680 }
 681 #endif
 682