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 /**
 218  * It updates a picture data/pitches.
 219  */
 220 void CommonUpdatePicture(picture_t *picture,
 221                          uint8_t *data, unsigned pitch)
 222 {
 223     /* fill in buffer info in first plane */
 224     picture->p->p_pixels = data;
 225     picture->p->i_pitch  = pitch;
 226     picture->p->i_lines  = picture->format.i_height;
 227
 228     /*  Fill chroma planes for planar YUV */
 229     if (picture->format.i_chroma == VLC_CODEC_I420 ||
 230         picture->format.i_chroma == VLC_CODEC_J420 ||
 231         picture->format.i_chroma == VLC_CODEC_YV12) {
 232
 233         for (int n = 1; n < picture->i_planes; n++) {
 234             const plane_t *o = &picture->p[n-1];
 235             plane_t *p = &picture->p[n];
 236
 237             p->p_pixels = o->p_pixels + o->i_lines * o->i_pitch;
 238             p->i_pitch  = pitch / 2;
 239             p->i_lines  = picture->format.i_height / 2;
 240         }
 241         /* The dx/d3d buffer is always allocated as YV12 */
 242         if (vlc_fourcc_AreUVPlanesSwapped(picture->format.i_chroma, VLC_CODEC_YV12)) {
 243             uint8_t *p_tmp = picture->p[1].p_pixels;
 244             picture->p[1].p_pixels = picture->p[2].p_pixels;
 245             picture->p[2].p_pixels = p_tmp;
 246         }
 247     }
 248 }
 249
 250 void AlignRect(RECT *r, int align_boundary, int align_size)
 251 {
 252     if (align_boundary)
 253         r->left = (r->left + align_boundary/2) & ~align_boundary;
 254     if (align_size)
 255         r->right = ((r->right - r->left + align_size/2) & ~align_size) + r->left;
 256 }
 257
 258 /* */
 259 static void CommonChangeThumbnailClip(vout_display_t *vd, bool show)
 260 {
 261 #ifndef UNDER_CE
 262     vout_display_sys_t *sys = vd->sys;
 263
 264     /* Windows 7 taskbar thumbnail code */
 265     OSVERSIONINFO winVer;
 266     winVer.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 267     if (!GetVersionEx(&winVer) || winVer.dwMajorVersion <= 5)
 268         return;
 269
 270     CoInitialize(0);
 271
 272     LPTASKBARLIST3 taskbl;
 273     if (S_OK == CoCreateInstance(&clsid_ITaskbarList,
 274                                  NULL, CLSCTX_INPROC_SERVER,
 275                                  &IID_ITaskbarList3,
 276                                  &taskbl)) {
 277         taskbl->vt->HrInit(taskbl);
 278
 279         HWND hroot = GetAncestor(sys->hwnd,GA_ROOT);
 280         RECT relative;
 281         if (show) {
 282             RECT video, parent;
 283             GetWindowRect(sys->hvideownd, &video);
 284             GetWindowRect(hroot, &parent);
 285             relative.left   = video.left   - parent.left - 8;
 286             relative.top    = video.top    - parent.top - 10;
 287
 288             relative.right  = video.right  - video.left + relative.left;
 289             relative.bottom = video.bottom - video.top  + relative.top - 25;
 290         }
 291         if (S_OK != taskbl->vt->SetThumbnailClip(taskbl, hroot,
 292                                                  show ? &relative : NULL))
 293             msg_Err(vd, "SetThumbNailClip failed");
 294
 295         taskbl->vt->Release(taskbl);
 296     }
 297     CoUninitialize();
 298 #endif
 299 }
 300
 301 /*****************************************************************************
 302  * UpdateRects: update clipping rectangles
 303  *****************************************************************************
 304  * This function is called when the window position or size are changed, and
 305  * its job is to update the source and destination RECTs used to display the
 306  * picture.
 307  *****************************************************************************/
 308 void UpdateRects(vout_display_t *vd,
 309                   const vout_display_cfg_t *cfg,
 310                   const video_format_t *source,
 311                   bool is_forced)
 312 {
 313     vout_display_sys_t *sys = vd->sys;
 314 #define rect_src sys->rect_src
 315 #define rect_src_clipped sys->rect_src_clipped
 316 #define rect_dest sys->rect_dest
 317 #define rect_dest_clipped sys->rect_dest_clipped
 318
 319     RECT  rect;
 320     POINT point;
 321
 322     /* */
 323     if (!cfg)
 324         cfg = vd->cfg;
 325     if (!source)
 326         source = &vd->source;
 327
 328     /* Retrieve the window size */
 329     GetClientRect(sys->hwnd, &rect);
 330
 331     /* Retrieve the window position */
 332     point.x = point.y = 0;
 333     ClientToScreen(sys->hwnd, &point);
 334
 335     /* If nothing changed, we can return */
 336     bool has_moved;
 337     bool is_resized;
 338     EventThreadUpdateWindowPosition(sys->event, &has_moved, &is_resized,
 339                                     point.x, point.y,
 340                                     rect.right, rect.bottom);
 341     if (is_resized)
 342         vout_display_SendEventDisplaySize(vd, rect.right, rect.bottom, cfg->is_fullscreen);
 343     if (!is_forced && !has_moved && !is_resized )
 344         return;
 345
 346     /* Update the window position and size */
 347     vout_display_cfg_t place_cfg = *cfg;
 348     place_cfg.display.width  = rect.right;
 349     place_cfg.display.height = rect.bottom;
 350
 351     vout_display_place_t place;
 352     vout_display_PlacePicture(&place, source, &place_cfg, false);
 353
 354     EventThreadUpdateSourceAndPlace(sys->event, source, &place);
 355 #if defined(MODULE_NAME_IS_wingapi)
 356     if (place.width != vd->fmt.i_width || place.height != vd->fmt.i_height)
 357         vout_display_SendEventPicturesInvalid(vd);
 358 #endif
 359
 360     if (sys->hvideownd)
 361         SetWindowPos(sys->hvideownd, 0,
 362                      place.x, place.y, place.width, place.height,
 363                      SWP_NOCOPYBITS|SWP_NOZORDER|SWP_ASYNCWINDOWPOS);
 364
 365     /* Destination image position and dimensions */
 366 #if defined(MODULE_NAME_IS_direct3d)
 367     rect_dest.left   = 0;
 368     rect_dest.right  = place.width;
 369     rect_dest.top    = 0;
 370     rect_dest.bottom = place.height;
 371 #else
 372     rect_dest.left = point.x + place.x;
 373     rect_dest.right = rect_dest.left + place.width;
 374     rect_dest.top = point.y + place.y;
 375     rect_dest.bottom = rect_dest.top + place.height;
 376
 377 #ifdef MODULE_NAME_IS_directx
 378     /* Apply overlay hardware constraints */
 379     if (sys->use_overlay)
 380         AlignRect(&rect_dest, sys->i_align_dest_boundary, sys->i_align_dest_size);
 381 #endif
 382
 383 #endif
 384
 385 #if defined(MODULE_NAME_IS_directx) || defined(MODULE_NAME_IS_direct3d)
 386     /* UpdateOverlay directdraw function doesn't automatically clip to the
 387      * display size so we need to do it otherwise it will fail
 388      * It is also needed for d3d to avoid exceding our surface size */
 389
 390     /* Clip the destination window */
 391     if (!IntersectRect(&rect_dest_clipped, &rect_dest,
 392                        &sys->rect_display)) {
 393         SetRectEmpty(&rect_src_clipped);
 394         goto exit;
 395     }
 396
 397 #ifndef NDEBUG
 398     msg_Dbg(vd, "DirectXUpdateRects image_dst_clipped coords:"
 399                 " %li,%li,%li,%li",
 400                 rect_dest_clipped.left, rect_dest_clipped.top,
 401                 rect_dest_clipped.right, rect_dest_clipped.bottom);
 402 #endif
 403
 404 #else
 405
 406     /* AFAIK, there are no clipping constraints in Direct3D, OpenGL and GDI */
 407     rect_dest_clipped = rect_dest;
 408
 409 #endif
 410
 411     /* the 2 following lines are to fix a bug when clicking on the desktop */
 412     if ((rect_dest_clipped.right - rect_dest_clipped.left) == 0 ||
 413         (rect_dest_clipped.bottom - rect_dest_clipped.top) == 0) {
 414         SetRectEmpty(&rect_src_clipped);
 415         goto exit;
 416     }
 417
 418     /* src image dimensions */
 419     rect_src.left   = 0;
 420     rect_src.top    = 0;
 421     rect_src.right  = source->i_width;
 422     rect_src.bottom = source->i_height;
 423
 424     /* Clip the source image */
 425     rect_src_clipped.left = source->i_x_offset +
 426       (rect_dest_clipped.left - rect_dest.left) *
 427       source->i_visible_width / (rect_dest.right - rect_dest.left);
 428     rect_src_clipped.right = source->i_x_offset +
 429       source->i_visible_width -
 430       (rect_dest.right - rect_dest_clipped.right) *
 431       source->i_visible_width / (rect_dest.right - rect_dest.left);
 432     rect_src_clipped.top = source->i_y_offset +
 433       (rect_dest_clipped.top - rect_dest.top) *
 434       source->i_visible_height / (rect_dest.bottom - rect_dest.top);
 435     rect_src_clipped.bottom = source->i_y_offset +
 436       source->i_visible_height -
 437       (rect_dest.bottom - rect_dest_clipped.bottom) *
 438       source->i_visible_height / (rect_dest.bottom - rect_dest.top);
 439
 440 #ifdef MODULE_NAME_IS_directx
 441     /* Apply overlay hardware constraints */
 442     if (sys->use_overlay)
 443         AlignRect(&rect_src_clipped, sys->i_align_src_boundary, sys->i_align_src_size);
 444 #elif defined(MODULE_NAME_IS_direct3d)
 445     /* Needed at least with YUV content */
 446     rect_src_clipped.left &= ~1;
 447     rect_src_clipped.right &= ~1;
 448     rect_src_clipped.top &= ~1;
 449     rect_src_clipped.bottom &= ~1;
 450 #endif
 451
 452 #ifndef NDEBUG
 453     msg_Dbg(vd, "DirectXUpdateRects image_src_clipped"
 454                 " coords: %li,%li,%li,%li",
 455                 rect_src_clipped.left, rect_src_clipped.top,
 456                 rect_src_clipped.right, rect_src_clipped.bottom);
 457 #endif
 458
 459 #ifdef MODULE_NAME_IS_directx
 460     /* The destination coordinates need to be relative to the current
 461      * directdraw primary surface (display) */
 462     rect_dest_clipped.left -= sys->rect_display.left;
 463     rect_dest_clipped.right -= sys->rect_display.left;
 464     rect_dest_clipped.top -= sys->rect_display.top;
 465     rect_dest_clipped.bottom -= sys->rect_display.top;
 466 #endif
 467
 468     CommonChangeThumbnailClip(vd, true);
 469
 470 exit:
 471     /* Signal the change in size/position */
 472     sys->changes |= DX_POSITION_CHANGE;
 473
 474 #undef rect_src
 475 #undef rect_src_clipped
 476 #undef rect_dest
 477 #undef rect_dest_clipped
 478 }
 479
 480 static int CommonControlSetFullscreen(vout_display_t *vd, bool is_fullscreen)
 481 {
 482     vout_display_sys_t *sys = vd->sys;
 483
 484 #ifdef MODULE_NAME_IS_direct3d
 485     if (sys->use_desktop && is_fullscreen)
 486         return VLC_EGENERIC;
 487 #endif
 488
 489     /* */
 490     if (sys->parent_window)
 491         return vout_window_SetFullScreen(sys->parent_window, is_fullscreen);
 492
 493     /* */
 494     HWND hwnd = sys->hparent && sys->hfswnd ? sys->hfswnd : sys->hwnd;
 495
 496     /* Save the current windows placement/placement to restore
 497        when fullscreen is over */
 498     WINDOWPLACEMENT window_placement;
 499     window_placement.length = sizeof(WINDOWPLACEMENT);
 500     GetWindowPlacement(hwnd, &window_placement);
 501
 502     if (is_fullscreen) {
 503         msg_Dbg(vd, "entering fullscreen mode");
 504
 505         /* Change window style, no borders and no title bar */
 506         SetWindowLong(hwnd, GWL_STYLE, WS_CLIPCHILDREN | WS_VISIBLE);
 507
 508         if (sys->hparent) {
 509 #ifdef UNDER_CE
 510             POINT point = {0,0};
 511             RECT rect;
 512             ClientToScreen(sys->hwnd, &point);
 513             GetClientRect(sys->hwnd, &rect);
 514             SetWindowPos(hwnd, 0, point.x, point.y,
 515                          rect.right, rect.bottom,
 516                          SWP_NOZORDER|SWP_FRAMECHANGED);
 517 #else
 518             /* Retrieve current window position so fullscreen will happen
 519             *on the right screen */
 520             HMONITOR hmon = MonitorFromWindow(sys->hparent,
 521                                               MONITOR_DEFAULTTONEAREST);
 522             MONITORINFO mi;
 523             mi.cbSize = sizeof(MONITORINFO);
 524             if (GetMonitorInfo(hmon, &mi))
 525                 SetWindowPos(hwnd, 0,
 526                              mi.rcMonitor.left,
 527                              mi.rcMonitor.top,
 528                              mi.rcMonitor.right - mi.rcMonitor.left,
 529                              mi.rcMonitor.bottom - mi.rcMonitor.top,
 530                              SWP_NOZORDER|SWP_FRAMECHANGED);
 531 #endif
 532         } else {
 533             /* Maximize non embedded window */
 534             ShowWindow(hwnd, SW_SHOWMAXIMIZED);
 535         }
 536
 537         if (sys->hparent) {
 538             /* Hide the previous window */
 539             RECT rect;
 540             GetClientRect(hwnd, &rect);
 541             SetParent(sys->hwnd, hwnd);
 542             SetWindowPos(sys->hwnd, 0, 0, 0,
 543                          rect.right, rect.bottom,
 544                          SWP_NOZORDER|SWP_FRAMECHANGED);
 545
 546 #ifdef UNDER_CE
 547             HWND topLevelParent = GetParent(sys->hparent);
 548 #else
 549             HWND topLevelParent = GetAncestor(sys->hparent, GA_ROOT);
 550 #endif
 551             ShowWindow(topLevelParent, SW_HIDE);
 552         }
 553         SetForegroundWindow(hwnd);
 554     } else {
 555         msg_Dbg(vd, "leaving fullscreen mode");
 556
 557         /* Change window style, no borders and no title bar */
 558         SetWindowLong(hwnd, GWL_STYLE, EventThreadGetWindowStyle(sys->event));
 559
 560         if (sys->hparent) {
 561             RECT rect;
 562             GetClientRect(sys->hparent, &rect);
 563             SetParent(sys->hwnd, sys->hparent);
 564             SetWindowPos(sys->hwnd, 0, 0, 0,
 565                          rect.right, rect.bottom,
 566                          SWP_NOZORDER|SWP_FRAMECHANGED);
 567
 568 #ifdef UNDER_CE
 569             HWND topLevelParent = GetParent(sys->hparent);
 570 #else
 571             HWND topLevelParent = GetAncestor(sys->hparent, GA_ROOT);
 572 #endif
 573             ShowWindow(topLevelParent, SW_SHOW);
 574             SetForegroundWindow(sys->hparent);
 575             ShowWindow(hwnd, SW_HIDE);
 576         } else {
 577             /* return to normal window for non embedded vout */
 578             SetWindowPlacement(hwnd, &window_placement);
 579             ShowWindow(hwnd, SW_SHOWNORMAL);
 580         }
 581     }
 582     return VLC_SUCCESS;
 583 }
 584
 585 int CommonControl(vout_display_t *vd, int query, va_list args)
 586 {
 587     vout_display_sys_t *sys = vd->sys;
 588
 589     switch (query) {
 590     case VOUT_DISPLAY_CHANGE_DISPLAY_SIZE:   /* const vout_display_cfg_t *p_cfg, int is_forced */
 591     case VOUT_DISPLAY_CHANGE_DISPLAY_FILLED: /* const vout_display_cfg_t *p_cfg */
 592     case VOUT_DISPLAY_CHANGE_ZOOM:           /* const vout_display_cfg_t *p_cfg */
 593     case VOUT_DISPLAY_CHANGE_SOURCE_ASPECT:  /* const video_format_t *p_source */
 594     case VOUT_DISPLAY_CHANGE_SOURCE_CROP: {  /* const video_format_t *p_source */
 595         const vout_display_cfg_t *cfg;
 596         const video_format_t *source;
 597         bool  is_forced = true;
 598         if (query == VOUT_DISPLAY_CHANGE_SOURCE_CROP ||
 599             query == VOUT_DISPLAY_CHANGE_SOURCE_ASPECT) {
 600             cfg    = vd->cfg;
 601             source = va_arg(args, const video_format_t *);
 602         } else {
 603             cfg    = va_arg(args, const vout_display_cfg_t *);
 604             source = &vd->source;
 605             if (query == VOUT_DISPLAY_CHANGE_DISPLAY_SIZE)
 606                 is_forced = va_arg(args, int);
 607         }
 608         if (query == VOUT_DISPLAY_CHANGE_DISPLAY_SIZE && is_forced) {
 609             /* Update dimensions */
 610             if (sys->parent_window) {
 611                 vout_window_SetSize(sys->parent_window, cfg->display.width, cfg->display.height);
 612             } else {
 613                 RECT rect_window;
 614                 rect_window.top    = 0;
 615                 rect_window.left   = 0;
 616                 rect_window.right  = cfg->display.width;
 617                 rect_window.bottom = cfg->display.height;
 618                 AdjustWindowRect(&rect_window, EventThreadGetWindowStyle(sys->event), 0);
 619
 620                 SetWindowPos(sys->hwnd, 0, 0, 0,
 621                              rect_window.right - rect_window.left,
 622                              rect_window.bottom - rect_window.top, SWP_NOMOVE);
 623             }
 624         }
 625         UpdateRects(vd, cfg, source, is_forced);
 626         return VLC_SUCCESS;
 627     }
 628     case VOUT_DISPLAY_CHANGE_WINDOW_STATE: {       /* unsigned state */
 629         const unsigned state = va_arg(args, unsigned);
 630         const bool is_on_top = (state & VOUT_WINDOW_STATE_ABOVE) != 0;
 631 #ifdef MODULE_NAME_IS_direct3d
 632         if (sys->use_desktop && is_on_top)
 633             return VLC_EGENERIC;
 634 #endif
 635         if (sys->parent_window) {
 636             if (vout_window_SetState(sys->parent_window, state))
 637                 return VLC_EGENERIC;
 638         } else {
 639             HMENU hMenu = GetSystemMenu(sys->hwnd, FALSE);
 640
 641             if (is_on_top && !(GetWindowLong(sys->hwnd, GWL_EXSTYLE) & WS_EX_TOPMOST)) {
 642                 CheckMenuItem(hMenu, IDM_TOGGLE_ON_TOP, MF_BYCOMMAND | MFS_CHECKED);
 643                 SetWindowPos(sys->hwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
 644             } else if (!is_on_top && (GetWindowLong(sys->hwnd, GWL_EXSTYLE) & WS_EX_TOPMOST)) {
 645                 CheckMenuItem(hMenu, IDM_TOGGLE_ON_TOP, MF_BYCOMMAND | MFS_UNCHECKED);
 646                 SetWindowPos(sys->hwnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOSIZE|SWP_NOMOVE);
 647             }
 648         }
 649         sys->is_on_top = is_on_top;
 650         return VLC_SUCCESS;
 651     }
 652     case VOUT_DISPLAY_CHANGE_FULLSCREEN: {   /* const vout_display_cfg_t *p_cfg */
 653         const vout_display_cfg_t *cfg = va_arg(args, const vout_display_cfg_t *);
 654         if (CommonControlSetFullscreen(vd, cfg->is_fullscreen))
 655             return VLC_EGENERIC;
 656         UpdateRects(vd, NULL, NULL, false);
 657         return VLC_SUCCESS;
 658     }
 659
 660     case VOUT_DISPLAY_HIDE_MOUSE:
 661         EventThreadMouseHide(sys->event);
 662         return VLC_SUCCESS;
 663     case VOUT_DISPLAY_RESET_PICTURES:
 664         assert(0);
 665     default:
 666         return VLC_EGENERIC;
 667     }
 668 }
 669
 670 #ifndef UNDER_CE
 671 static void DisableScreensaver(vout_display_t *vd)
 672 {
 673     vout_display_sys_t *sys = vd->sys;
 674
 675     /* disable screensaver by temporarily changing system settings */
 676     sys->i_spi_lowpowertimeout = 0;
 677     sys->i_spi_powerofftimeout = 0;
 678     sys->i_spi_screensavetimeout = 0;
 679     if (var_GetBool(vd, "disable-screensaver")) {
 680         msg_Dbg(vd, "disabling screen saver");
 681         SystemParametersInfo(SPI_GETLOWPOWERTIMEOUT, 0,
 682                              &sys->i_spi_lowpowertimeout, 0);
 683         if (0 != sys->i_spi_lowpowertimeout) {
 684             SystemParametersInfo(SPI_SETLOWPOWERTIMEOUT, 0, NULL, 0);
 685         }
 686         SystemParametersInfo(SPI_GETPOWEROFFTIMEOUT, 0,
 687                              &sys->i_spi_powerofftimeout, 0);
 688         if (0 != sys->i_spi_powerofftimeout) {
 689             SystemParametersInfo(SPI_SETPOWEROFFTIMEOUT, 0, NULL, 0);
 690         }
 691         SystemParametersInfo(SPI_GETSCREENSAVETIMEOUT, 0,
 692                              &sys->i_spi_screensavetimeout, 0);
 693         if (0 != sys->i_spi_screensavetimeout) {
 694             SystemParametersInfo(SPI_SETSCREENSAVETIMEOUT, 0, NULL, 0);
 695         }
 696     }
 697 }
 698
 699 static void RestoreScreensaver(vout_display_t *vd)
 700 {
 701     vout_display_sys_t *sys = vd->sys;
 702
 703     /* restore screensaver system settings */
 704     if (0 != sys->i_spi_lowpowertimeout) {
 705         SystemParametersInfo(SPI_SETLOWPOWERTIMEOUT,
 706                              sys->i_spi_lowpowertimeout, NULL, 0);
 707     }
 708     if (0 != sys->i_spi_powerofftimeout) {
 709         SystemParametersInfo(SPI_SETPOWEROFFTIMEOUT,
 710                              sys->i_spi_powerofftimeout, NULL, 0);
 711     }
 712     if (0 != sys->i_spi_screensavetimeout) {
 713         SystemParametersInfo(SPI_SETSCREENSAVETIMEOUT,
 714                              sys->i_spi_screensavetimeout, NULL, 0);
 715     }
 716 }
 717 #endif
 718