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
  33 #include <errno.h>                                                 /* ENOMEM */
  34 #include <ctype.h>                                              /* tolower() */
  35
  36 #ifndef _WIN32_WINNT
  37 #   define _WIN32_WINNT 0x0500
  38 #endif
  39
  40 #include <vlc_common.h>
  41 #include <vlc_interface.h>
  42 #include <vlc_playlist.h>
  43 #include <vlc_vout.h>
  44 #include <vlc_vout_window.h>
  45
  46 #include <windows.h>
  47 #include <tchar.h>
  48 #include <windowsx.h>
  49 #include <shellapi.h>
  50
  51 #ifdef MODULE_NAME_IS_directx
  52 #include <ddraw.h>
  53 #endif
  54 #ifdef MODULE_NAME_IS_direct3d
  55 #include <d3d9.h>
  56 #endif
  57 #ifdef MODULE_NAME_IS_glwin32
  58 #include <GL/gl.h>
  59 #endif
  60
  61 #include <vlc_keys.h>
  62 #include "vout.h"
  63
  64 #ifndef UNDER_CE
  65 #include <vlc_windows_interfaces.h>
  66 #endif
  67
  68 #ifdef UNDER_CE
  69 #include <aygshell.h>
  70     //WINSHELLAPI BOOL WINAPI SHFullScreen(HWND hwndRequester, DWORD dwState);
  71 #endif
  72
  73 static int vaControlParentWindow( vout_thread_t *, int, va_list );
  74
  75 /* */
  76 int CommonInit( vout_thread_t *p_vout )
  77 {
  78     vout_sys_t *p_sys = p_vout->p_sys;
  79
  80     p_sys->hwnd      = NULL;
  81     p_sys->hvideownd = NULL;
  82     p_sys->hparent   = NULL;
  83     p_sys->hfswnd    = NULL;
  84     p_sys->i_changes = 0;
  85     SetRectEmpty( &p_sys->rect_display );
  86     SetRectEmpty( &p_sys->rect_parent );
  87     vlc_mutex_init( &p_sys->lock );
  88
  89     var_Create( p_vout, "video-title", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
  90
  91     /* Set main window's size */
  92     p_sys->i_window_width  = p_vout->i_window_width;
  93     p_sys->i_window_height = p_vout->i_window_height;
  94
  95     p_sys->p_event = EventThreadCreate( p_vout );
  96     if( !p_sys->p_event )
  97         return VLC_EGENERIC;
  98     if( EventThreadStart( p_sys->p_event ) )
  99         return VLC_EGENERIC;
 100
 101     /* Variable to indicate if the window should be on top of others */
 102     /* Trigger a callback right now */
 103     var_TriggerCallback( p_vout, "video-on-top" );
 104
 105     /* Why not with glwin32 */
 106 #if !defined(UNDER_CE) && !defined(MODULE_NAME_IS_glwin32)
 107     var_Create( p_vout, "disable-screensaver", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 108     DisableScreensaver ( p_vout );
 109 #endif
 110
 111     return VLC_SUCCESS;
 112 }
 113
 114 /* */
 115 void CommonClean( vout_thread_t *p_vout )
 116 {
 117     vout_sys_t *p_sys = p_vout->p_sys;
 118
 119     ExitFullscreen( p_vout );
 120     if( p_sys->p_event )
 121     {
 122         EventThreadStop( p_sys->p_event );
 123         EventThreadDestroy( p_sys->p_event );
 124     }
 125
 126     vlc_mutex_destroy( &p_sys->lock );
 127
 128 #if !defined(UNDER_CE) && !defined(MODULE_NAME_IS_glwin32)
 129     RestoreScreensaver( p_vout );
 130 #endif
 131 }
 132
 133 /*****************************************************************************
 134  * UpdateRects: update clipping rectangles
 135  *****************************************************************************
 136  * This function is called when the window position or size are changed, and
 137  * its job is to update the source and destination RECTs used to display the
 138  * picture.
 139  *****************************************************************************/
 140 void UpdateRects( vout_thread_t *p_vout, bool b_force )
 141 {
 142 #define rect_src p_vout->p_sys->rect_src
 143 #define rect_src_clipped p_vout->p_sys->rect_src_clipped
 144 #define rect_dest p_vout->p_sys->rect_dest
 145 #define rect_dest_clipped p_vout->p_sys->rect_dest_clipped
 146
 147     unsigned int i_width, i_height, i_x, i_y;
 148
 149     RECT  rect;
 150     POINT point;
 151
 152     /* Retrieve the window size */
 153     GetClientRect( p_vout->p_sys->hwnd, &rect );
 154
 155     /* Retrieve the window position */
 156     point.x = point.y = 0;
 157     ClientToScreen( p_vout->p_sys->hwnd, &point );
 158
 159     /* If nothing changed, we can return */
 160     if( !b_force
 161          && p_vout->p_sys->i_window_width == rect.right
 162          && p_vout->p_sys->i_window_height == rect.bottom
 163          && p_vout->p_sys->i_window_x == point.x
 164          && p_vout->p_sys->i_window_y == point.y )
 165     {
 166         return;
 167     }
 168
 169     /* Update the window position and size */
 170     p_vout->p_sys->i_window_x = point.x;
 171     p_vout->p_sys->i_window_y = point.y;
 172     p_vout->p_sys->i_window_width = rect.right;
 173     p_vout->p_sys->i_window_height = rect.bottom;
 174
 175     vout_PlacePicture( p_vout, rect.right, rect.bottom,
 176                        &i_x, &i_y, &i_width, &i_height );
 177
 178     if( p_vout->p_sys->hvideownd )
 179         SetWindowPos( p_vout->p_sys->hvideownd, 0,
 180                       i_x, i_y, i_width, i_height,
 181                       SWP_NOCOPYBITS|SWP_NOZORDER|SWP_ASYNCWINDOWPOS );
 182
 183     /* Destination image position and dimensions */
 184     rect_dest.left = point.x + i_x;
 185     rect_dest.right = rect_dest.left + i_width;
 186     rect_dest.top = point.y + i_y;
 187     rect_dest.bottom = rect_dest.top + i_height;
 188
 189 #ifdef MODULE_NAME_IS_directx
 190     /* Apply overlay hardware constraints */
 191     if( p_vout->p_sys->b_using_overlay )
 192     {
 193         if( p_vout->p_sys->i_align_dest_boundary )
 194             rect_dest.left = ( rect_dest.left +
 195                 p_vout->p_sys->i_align_dest_boundary / 2 ) &
 196                 ~p_vout->p_sys->i_align_dest_boundary;
 197
 198         if( p_vout->p_sys->i_align_dest_size )
 199             rect_dest.right = (( rect_dest.right - rect_dest.left +
 200                 p_vout->p_sys->i_align_dest_size / 2 ) &
 201                 ~p_vout->p_sys->i_align_dest_size) + rect_dest.left;
 202     }
 203
 204     /* UpdateOverlay directdraw function doesn't automatically clip to the
 205      * display size so we need to do it otherwise it will fail */
 206
 207     /* Clip the destination window */
 208     if( !IntersectRect( &rect_dest_clipped, &rect_dest,
 209                         &p_vout->p_sys->rect_display ) )
 210     {
 211         SetRectEmpty( &rect_src_clipped );
 212         return;
 213     }
 214
 215 #ifndef NDEBUG
 216     msg_Dbg( p_vout, "DirectXUpdateRects image_dst_clipped coords:"
 217                      " %li,%li,%li,%li",
 218                      rect_dest_clipped.left, rect_dest_clipped.top,
 219                      rect_dest_clipped.right, rect_dest_clipped.bottom );
 220 #endif
 221
 222 #else /* MODULE_NAME_IS_directx */
 223
 224     /* AFAIK, there are no clipping constraints in Direct3D, OpenGL and GDI */
 225     rect_dest_clipped = rect_dest;
 226
 227 #endif
 228
 229     /* the 2 following lines are to fix a bug when clicking on the desktop */
 230     if( (rect_dest_clipped.right - rect_dest_clipped.left)==0 ||
 231         (rect_dest_clipped.bottom - rect_dest_clipped.top)==0 )
 232     {
 233         SetRectEmpty( &rect_src_clipped );
 234         return;
 235     }
 236
 237     /* src image dimensions */
 238     rect_src.left = 0;
 239     rect_src.top = 0;
 240     rect_src.right = p_vout->render.i_width;
 241     rect_src.bottom = p_vout->render.i_height;
 242
 243     /* Clip the source image */
 244     rect_src_clipped.left = p_vout->fmt_out.i_x_offset +
 245       (rect_dest_clipped.left - rect_dest.left) *
 246       p_vout->fmt_out.i_visible_width / (rect_dest.right - rect_dest.left);
 247     rect_src_clipped.right = p_vout->fmt_out.i_x_offset +
 248       p_vout->fmt_out.i_visible_width -
 249       (rect_dest.right - rect_dest_clipped.right) *
 250       p_vout->fmt_out.i_visible_width / (rect_dest.right - rect_dest.left);
 251     rect_src_clipped.top = p_vout->fmt_out.i_y_offset +
 252       (rect_dest_clipped.top - rect_dest.top) *
 253       p_vout->fmt_out.i_visible_height / (rect_dest.bottom - rect_dest.top);
 254     rect_src_clipped.bottom = p_vout->fmt_out.i_y_offset +
 255       p_vout->fmt_out.i_visible_height -
 256       (rect_dest.bottom - rect_dest_clipped.bottom) *
 257       p_vout->fmt_out.i_visible_height / (rect_dest.bottom - rect_dest.top);
 258
 259 #ifdef MODULE_NAME_IS_directx
 260     /* Apply overlay hardware constraints */
 261     if( p_vout->p_sys->b_using_overlay )
 262     {
 263         if( p_vout->p_sys->i_align_src_boundary )
 264             rect_src_clipped.left = ( rect_src_clipped.left +
 265                 p_vout->p_sys->i_align_src_boundary / 2 ) &
 266                 ~p_vout->p_sys->i_align_src_boundary;
 267
 268         if( p_vout->p_sys->i_align_src_size )
 269             rect_src_clipped.right = (( rect_src_clipped.right -
 270                 rect_src_clipped.left +
 271                 p_vout->p_sys->i_align_src_size / 2 ) &
 272                 ~p_vout->p_sys->i_align_src_size) + rect_src_clipped.left;
 273     }
 274 #endif
 275
 276 #ifndef NDEBUG
 277     msg_Dbg( p_vout, "DirectXUpdateRects image_src_clipped"
 278                      " coords: %li,%li,%li,%li",
 279                      rect_src_clipped.left, rect_src_clipped.top,
 280                      rect_src_clipped.right, rect_src_clipped.bottom );
 281 #endif
 282
 283 #ifdef MODULE_NAME_IS_directx
 284     /* The destination coordinates need to be relative to the current
 285      * directdraw primary surface (display) */
 286     rect_dest_clipped.left -= p_vout->p_sys->rect_display.left;
 287     rect_dest_clipped.right -= p_vout->p_sys->rect_display.left;
 288     rect_dest_clipped.top -= p_vout->p_sys->rect_display.top;
 289     rect_dest_clipped.bottom -= p_vout->p_sys->rect_display.top;
 290
 291     if( p_vout->p_sys->b_using_overlay )
 292         DirectDrawUpdateOverlay( p_vout );
 293 #endif
 294
 295 #ifndef UNDER_CE
 296     /* Windows 7 taskbar thumbnail code */
 297     LPTASKBARLIST3 p_taskbl;
 298     OSVERSIONINFO winVer;
 299     winVer.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 300     if( GetVersionEx(&winVer) && winVer.dwMajorVersion > 5 )
 301     {
 302         CoInitialize( 0 );
 303
 304         if( S_OK == CoCreateInstance( &clsid_ITaskbarList,
 305                     NULL, CLSCTX_INPROC_SERVER,
 306                     &IID_ITaskbarList3,
 307                     &p_taskbl) )
 308         {
 309             RECT rect_video, rect_parent, rect_relative;
 310             HWND hroot = GetAncestor(p_vout->p_sys->hwnd,GA_ROOT);
 311
 312             p_taskbl->vt->HrInit(p_taskbl);
 313             GetWindowRect(p_vout->p_sys->hvideownd, &rect_video);
 314             GetWindowRect(hroot, &rect_parent);
 315             rect_relative.left = rect_video.left - rect_parent.left - 8;
 316             rect_relative.right = rect_video.right - rect_video.left + rect_relative.left;
 317             rect_relative.top = rect_video.top - rect_parent.top - 10;
 318             rect_relative.bottom = rect_video.bottom - rect_video.top + rect_relative.top - 25;
 319
 320             if (S_OK != p_taskbl->vt->SetThumbnailClip(p_taskbl, hroot, &rect_relative))
 321                 msg_Err( p_vout, "SetThumbNailClip failed");
 322
 323             p_taskbl->vt->Release(p_taskbl);
 324         }
 325         CoUninitialize();
 326     }
 327 #endif
 328     /* Signal the change in size/position */
 329     p_vout->p_sys->i_changes |= DX_POSITION_CHANGE;
 330
 331 #undef rect_src
 332 #undef rect_src_clipped
 333 #undef rect_dest
 334 #undef rect_dest_clipped
 335 }
 336
 337 /*****************************************************************************
 338  * Control: control facility for the vout
 339  *****************************************************************************/
 340 int Control( vout_thread_t *p_vout, int i_query, va_list args )
 341 {
 342     RECT rect_window;
 343
 344     switch( i_query )
 345     {
 346     case VOUT_SET_SIZE:
 347         if( p_vout->p_sys->parent_window )
 348             return vaControlParentWindow( p_vout, i_query, args );
 349
 350         /* Update dimensions */
 351         rect_window.top = rect_window.left = 0;
 352         rect_window.right  = va_arg( args, unsigned int );
 353         rect_window.bottom = va_arg( args, unsigned int );
 354         if( !rect_window.right ) rect_window.right = p_vout->i_window_width;
 355         if( !rect_window.bottom ) rect_window.bottom = p_vout->i_window_height;
 356         AdjustWindowRect( &rect_window, p_vout->p_sys->i_window_style, 0 );
 357
 358         SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
 359                       rect_window.right - rect_window.left,
 360                       rect_window.bottom - rect_window.top, SWP_NOMOVE );
 361
 362         return VLC_SUCCESS;
 363
 364     case VOUT_SET_STAY_ON_TOP:
 365         if( p_vout->p_sys->hparent && !var_GetBool( p_vout, "fullscreen" ) )
 366             return vaControlParentWindow( p_vout, i_query, args );
 367
 368         p_vout->p_sys->b_on_top_change = true;
 369         return VLC_SUCCESS;
 370
 371     default:
 372         return VLC_EGENERIC;
 373     }
 374 }
 375
 376
 377 /* Internal wrapper over GetWindowPlacement */
 378 static WINDOWPLACEMENT getWindowState(HWND hwnd)
 379 {
 380     WINDOWPLACEMENT window_placement;
 381     window_placement.length = sizeof(WINDOWPLACEMENT);
 382     GetWindowPlacement( hwnd, &window_placement );
 383     return window_placement;
 384 }
 385
 386 /* Internal wrapper to call vout_ControlWindow for hparent */
 387 static int vaControlParentWindow( vout_thread_t *p_vout, int i_query,
 388                                    va_list args )
 389 {
 390     switch( i_query )
 391     {
 392     case VOUT_SET_SIZE:
 393     {
 394         const unsigned i_width  = va_arg(args, unsigned);
 395         const unsigned i_height = va_arg(args, unsigned);
 396         return vout_window_SetSize( p_vout->p_sys->parent_window, i_width, i_height );
 397     }
 398     case VOUT_SET_STAY_ON_TOP:
 399     {
 400         const bool is_on_top = va_arg(args, int);
 401         return vout_window_SetOnTop( p_vout->p_sys->parent_window, is_on_top );
 402     }
 403     default:
 404         return VLC_EGENERIC;
 405     }
 406 }
 407
 408 #if 0
 409 static int ControlParentWindow( vout_thread_t *p_vout, int i_query, ... )
 410 {
 411     va_list args;
 412     int ret;
 413
 414     va_start( args, i_query );
 415     ret = vaControlParentWindow( p_vout, i_query, args );
 416     va_end( args );
 417     return ret;
 418 }
 419 #endif
 420
 421 void ExitFullscreen( vout_thread_t *p_vout )
 422 {
 423     if( p_vout->b_fullscreen )
 424     {
 425         msg_Dbg( p_vout, "Quitting fullscreen" );
 426         Win32ToggleFullscreen( p_vout );
 427         /* Force fullscreen in the core for the next video */
 428         var_SetBool( p_vout, "fullscreen", true );
 429     }
 430 }
 431
 432 void Win32ToggleFullscreen( vout_thread_t *p_vout )
 433 {
 434     HWND hwnd = (p_vout->p_sys->hparent && p_vout->p_sys->hfswnd) ?
 435         p_vout->p_sys->hfswnd : p_vout->p_sys->hwnd;
 436
 437     /* Save the current windows placement/placement to restore
 438        when fullscreen is over */
 439     WINDOWPLACEMENT window_placement = getWindowState( hwnd );
 440
 441     p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 442
 443     /* We want to go to Fullscreen */
 444     if( p_vout->b_fullscreen )
 445     {
 446         msg_Dbg( p_vout, "entering fullscreen mode" );
 447
 448         /* Change window style, no borders and no title bar */
 449         int i_style = WS_CLIPCHILDREN | WS_VISIBLE;
 450         SetWindowLong( hwnd, GWL_STYLE, i_style );
 451
 452         if( p_vout->p_sys->hparent )
 453         {
 454 #ifdef UNDER_CE
 455             POINT point = {0,0};
 456             RECT rect;
 457             ClientToScreen( p_vout->p_sys->hwnd, &point );
 458             GetClientRect( p_vout->p_sys->hwnd, &rect );
 459             SetWindowPos( hwnd, 0, point.x, point.y,
 460                           rect.right, rect.bottom,
 461                           SWP_NOZORDER|SWP_FRAMECHANGED );
 462 #else
 463             /* Retrieve current window position so fullscreen will happen
 464             *on the right screen */
 465             HMONITOR hmon = MonitorFromWindow(p_vout->p_sys->hparent,
 466                                             MONITOR_DEFAULTTONEAREST);
 467             MONITORINFO mi;
 468             if (GetMonitorInfo(hmon, &mi))
 469             SetWindowPos( hwnd, 0,
 470                             mi.rcMonitor.left,
 471                             mi.rcMonitor.top,
 472                             mi.rcMonitor.right - mi.rcMonitor.left,
 473                             mi.rcMonitor.bottom - mi.rcMonitor.top,
 474                             SWP_NOZORDER|SWP_FRAMECHANGED );
 475 #endif
 476         }
 477         else
 478         {
 479             /* Maximize non embedded window */
 480             ShowWindow( hwnd, SW_SHOWMAXIMIZED );
 481         }
 482
 483         if( p_vout->p_sys->hparent )
 484         {
 485             /* Hide the previous window */
 486             RECT rect;
 487             GetClientRect( hwnd, &rect );
 488             SetParent( p_vout->p_sys->hwnd, hwnd );
 489             SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
 490                           rect.right, rect.bottom,
 491                           SWP_NOZORDER|SWP_FRAMECHANGED );
 492
 493 #ifdef UNDER_CE
 494             HWND topLevelParent = GetParent( p_vout->p_sys->hparent );
 495 #else
 496             HWND topLevelParent = GetAncestor( p_vout->p_sys->hparent, GA_ROOT );
 497 #endif
 498             ShowWindow( topLevelParent, SW_HIDE );
 499         }
 500
 501         SetForegroundWindow( hwnd );
 502     }
 503     else
 504     {
 505         msg_Dbg( p_vout, "leaving fullscreen mode" );
 506         /* Change window style, no borders and no title bar */
 507         SetWindowLong( hwnd, GWL_STYLE, p_vout->p_sys->i_window_style );
 508
 509         if( p_vout->p_sys->hparent )
 510         {
 511             RECT rect;
 512             GetClientRect( p_vout->p_sys->hparent, &rect );
 513             SetParent( p_vout->p_sys->hwnd, p_vout->p_sys->hparent );
 514             SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
 515                           rect.right, rect.bottom,
 516                           SWP_NOZORDER|SWP_FRAMECHANGED );
 517
 518 #ifdef UNDER_CE
 519             HWND topLevelParent = GetParent( p_vout->p_sys->hparent );
 520 #else
 521             HWND topLevelParent = GetAncestor( p_vout->p_sys->hparent, GA_ROOT );
 522 #endif
 523             ShowWindow( topLevelParent, SW_SHOW );
 524             SetForegroundWindow( p_vout->p_sys->hparent );
 525             ShowWindow( hwnd, SW_HIDE );
 526         }
 527         else
 528         {
 529             /* return to normal window for non embedded vout */
 530             SetWindowPlacement( hwnd, &window_placement );
 531             ShowWindow( hwnd, SW_SHOWNORMAL );
 532         }
 533
 534         /* Make sure the mouse cursor is displayed */
 535         PostMessage( p_vout->p_sys->hwnd, WM_VLC_SHOW_MOUSE, 0, 0 );
 536     }
 537
 538     /* Update the object variable and trigger callback */
 539     var_SetBool( p_vout, "fullscreen", p_vout->b_fullscreen );
 540 }
 541
 542 #ifndef UNDER_CE
 543 void DisableScreensaver( vout_thread_t *p_vout )
 544 {
 545     /* disable screensaver by temporarily changing system settings */
 546     p_vout->p_sys->i_spi_lowpowertimeout = 0;
 547     p_vout->p_sys->i_spi_powerofftimeout = 0;
 548     p_vout->p_sys->i_spi_screensavetimeout = 0;
 549     if( var_GetBool( p_vout, "disable-screensaver" ) )
 550     {
 551         msg_Dbg(p_vout, "disabling screen saver");
 552         SystemParametersInfo(SPI_GETLOWPOWERTIMEOUT,
 553             0, &(p_vout->p_sys->i_spi_lowpowertimeout), 0);
 554         if( 0 != p_vout->p_sys->i_spi_lowpowertimeout ) {
 555             SystemParametersInfo(SPI_SETLOWPOWERTIMEOUT, 0, NULL, 0);
 556         }
 557         SystemParametersInfo(SPI_GETPOWEROFFTIMEOUT, 0,
 558             &(p_vout->p_sys->i_spi_powerofftimeout), 0);
 559         if( 0 != p_vout->p_sys->i_spi_powerofftimeout ) {
 560             SystemParametersInfo(SPI_SETPOWEROFFTIMEOUT, 0, NULL, 0);
 561         }
 562         SystemParametersInfo(SPI_GETSCREENSAVETIMEOUT, 0,
 563             &(p_vout->p_sys->i_spi_screensavetimeout), 0);
 564         if( 0 != p_vout->p_sys->i_spi_screensavetimeout ) {
 565             SystemParametersInfo(SPI_SETSCREENSAVETIMEOUT, 0, NULL, 0);
 566         }
 567     }
 568 }
 569
 570 void RestoreScreensaver( vout_thread_t *p_vout )
 571 {
 572     /* restore screensaver system settings */
 573     if( 0 != p_vout->p_sys->i_spi_lowpowertimeout ) {
 574         SystemParametersInfo(SPI_SETLOWPOWERTIMEOUT,
 575             p_vout->p_sys->i_spi_lowpowertimeout, NULL, 0);
 576     }
 577     if( 0 != p_vout->p_sys->i_spi_powerofftimeout ) {
 578         SystemParametersInfo(SPI_SETPOWEROFFTIMEOUT,
 579             p_vout->p_sys->i_spi_powerofftimeout, NULL, 0);
 580     }
 581     if( 0 != p_vout->p_sys->i_spi_screensavetimeout ) {
 582         SystemParametersInfo(SPI_SETSCREENSAVETIMEOUT,
 583             p_vout->p_sys->i_spi_screensavetimeout, NULL, 0);
 584     }
 585 }
 586 #endif
 587