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

   1 /*****************************************************************************
   2  * vout.c: Windows DirectX video output display method
   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  * Preamble:
  26  *
  27  * This plugin will use YUV overlay if supported, using overlay will result in
  28  * the best video quality (hardware interpolation when rescaling the picture)
  29  * and the fastest display as it requires less processing.
  30  *
  31  * If YUV overlay is not supported this plugin will use RGB offscreen video
  32  * surfaces that will be blitted onto the primary surface (display) to
  33  * effectively display the pictures. This fallback method also enables us to
  34  * display video in window mode.
  35  *
  36  *****************************************************************************/
  37 #include <errno.h>                                                 /* ENOMEM */
  38
  39 #ifdef HAVE_CONFIG_H
  40 # include "config.h"
  41 #endif
  42
  43 #include <vlc_common.h>
  44 #include <vlc_plugin.h>
  45 #include <vlc_interface.h>
  46 #include <vlc_playlist.h>
  47 #include <vlc_vout.h>
  48
  49 #include <windows.h>
  50 #include <tchar.h>
  51 #include <ddraw.h>
  52 #include <commctrl.h>
  53
  54 #ifndef UNDER_CE
  55 #   include <multimon.h>
  56 #endif
  57 #undef GetSystemMetrics
  58
  59 #ifndef MONITOR_DEFAULTTONEAREST
  60 #   define MONITOR_DEFAULTTONEAREST 2
  61 #endif
  62
  63 #include "vout.h"
  64
  65 /*****************************************************************************
  66  * picture_sys_t: direct buffer method descriptor
  67  *****************************************************************************
  68  * This structure is part of the picture descriptor, it describes the
  69  * DirectX specific properties of a direct buffer.
  70  *****************************************************************************/
  71 struct picture_sys_t
  72 {
  73     LPDIRECTDRAWSURFACE2 p_surface;
  74     LPDIRECTDRAWSURFACE2 p_front_surface;
  75     DDSURFACEDESC        ddsd;
  76 };
  77
  78 /*****************************************************************************
  79  * DirectDraw GUIDs.
  80  * Defining them here allows us to get rid of the dxguid library during
  81  * the linking stage.
  82  *****************************************************************************/
  83 #include <initguid.h>
  84 #undef GUID_EXT
  85 #define GUID_EXT
  86 DEFINE_GUID( IID_IDirectDraw2, 0xB3A6F3E0,0x2B43,0x11CF,0xA2,0xDE,0x00,0xAA,0x00,0xB9,0x33,0x56 );
  87 DEFINE_GUID( IID_IDirectDrawSurface2, 0x57805885,0x6eec,0x11cf,0x94,0x41,0xa8,0x23,0x03,0xc1,0x0e,0x27 );
  88
  89 /*****************************************************************************
  90  * Local prototypes.
  91  *****************************************************************************/
  92 static int  OpenVideo  ( vlc_object_t * );
  93 static void CloseVideo ( vlc_object_t * );
  94
  95 static int  Init      ( vout_thread_t * );
  96 static void End       ( vout_thread_t * );
  97 static int  Manage    ( vout_thread_t * );
  98 static void Display   ( vout_thread_t *, picture_t * );
  99 static void FirstDisplay( vout_thread_t *, picture_t * );
 100 static void SetPalette( vout_thread_t *, uint16_t *, uint16_t *, uint16_t * );
 101
 102 static int  NewPictureVec  ( vout_thread_t *, picture_t *, int );
 103 static void FreePictureVec ( vout_thread_t *, picture_t *, int );
 104 static int  UpdatePictureStruct( vout_thread_t *, picture_t *, int );
 105
 106 static int  DirectXInitDDraw      ( vout_thread_t *p_vout );
 107 static void DirectXCloseDDraw     ( vout_thread_t *p_vout );
 108 static int  DirectXCreateDisplay  ( vout_thread_t *p_vout );
 109 static void DirectXCloseDisplay   ( vout_thread_t *p_vout );
 110 static int  DirectXCreateSurface  ( vout_thread_t *p_vout,
 111                                     LPDIRECTDRAWSURFACE2 *, int, int, int );
 112 static void DirectXCloseSurface   ( vout_thread_t *p_vout,
 113                                     LPDIRECTDRAWSURFACE2 );
 114 static int  DirectXCreateClipper  ( vout_thread_t *p_vout );
 115 static void DirectXGetDDrawCaps   ( vout_thread_t *p_vout );
 116 static int  DirectXLockSurface    ( vout_thread_t *p_vout, picture_t *p_pic );
 117 static int  DirectXUnlockSurface  ( vout_thread_t *p_vout, picture_t *p_pic );
 118
 119 static DWORD DirectXFindColorkey( vout_thread_t *p_vout, uint32_t *i_color );
 120
 121 void SwitchWallpaperMode( vout_thread_t *, bool );
 122
 123 /* Object variables callbacks */
 124 static int FindDevicesCallback( vlc_object_t *, char const *,
 125                                 vlc_value_t, vlc_value_t, void * );
 126 static int WallpaperCallback( vlc_object_t *, char const *,
 127                               vlc_value_t, vlc_value_t, void * );
 128
 129 /*****************************************************************************
 130  * Module descriptor
 131  *****************************************************************************/
 132 #define HW_YUV_TEXT N_("Use hardware YUV->RGB conversions")
 133 #define HW_YUV_LONGTEXT N_( \
 134     "Try to use hardware acceleration for YUV->RGB conversions. " \
 135     "This option doesn't have any effect when using overlays." )
 136
 137 #define SYSMEM_TEXT N_("Use video buffers in system memory")
 138 #define SYSMEM_LONGTEXT N_( \
 139     "Create video buffers in system memory instead of video memory. This " \
 140     "isn't recommended as usually using video memory allows to benefit from " \
 141     "more hardware acceleration (like rescaling or YUV->RGB conversions). " \
 142     "This option doesn't have any effect when using overlays." )
 143
 144 #define TRIPLEBUF_TEXT N_("Use triple buffering for overlays")
 145 #define TRIPLEBUF_LONGTEXT N_( \
 146     "Try to use triple buffering when using YUV overlays. That results in " \
 147     "much better video quality (no flickering)." )
 148
 149 #define DEVICE_TEXT N_("Name of desired display device")
 150 #define DEVICE_LONGTEXT N_("In a multiple monitor configuration, you can " \
 151     "specify the Windows device name of the display that you want the video " \
 152     "window to open on. For example, \"\\\\.\\DISPLAY1\" or " \
 153     "\"\\\\.\\DISPLAY2\"." )
 154
 155 #define WALLPAPER_TEXT N_("Enable wallpaper mode ")
 156 #define WALLPAPER_LONGTEXT N_( \
 157     "The wallpaper mode allows you to display the video as the desktop " \
 158     "background. Note that this feature only works in overlay mode and " \
 159     "the desktop must not already have a wallpaper." )
 160
 161 static const char *const ppsz_dev[] = { "" };
 162 static const char *const ppsz_dev_text[] = { N_("Default") };
 163
 164 vlc_module_begin ()
 165     set_shortname( "DirectX" )
 166     set_category( CAT_VIDEO )
 167     set_subcategory( SUBCAT_VIDEO_VOUT )
 168     add_bool( "directx-hw-yuv", 1, NULL, HW_YUV_TEXT, HW_YUV_LONGTEXT,
 169               true )
 170     add_bool( "directx-use-sysmem", 0, NULL, SYSMEM_TEXT, SYSMEM_LONGTEXT,
 171               true )
 172     add_bool( "directx-3buffering", 1, NULL, TRIPLEBUF_TEXT,
 173               TRIPLEBUF_LONGTEXT, true )
 174
 175     add_string( "directx-device", "", NULL, DEVICE_TEXT, DEVICE_LONGTEXT,
 176                 true )
 177         change_string_list( ppsz_dev, ppsz_dev_text, FindDevicesCallback )
 178         change_action_add( FindDevicesCallback, N_("Refresh list") )
 179
 180     add_bool( "directx-wallpaper", 0, NULL, WALLPAPER_TEXT, WALLPAPER_LONGTEXT,
 181               true )
 182
 183     set_description( N_("DirectX video output") )
 184     set_capability( "video output", 100 )
 185     add_shortcut( "directx" )
 186     set_callbacks( OpenVideo, CloseVideo )
 187
 188     /* FIXME: Hack to avoid unregistering our window class */
 189     linked_with_a_crap_library_which_uses_atexit ()
 190 vlc_module_end ()
 191
 192 #if 0 /* FIXME */
 193     /* check if we registered a window class because we need to
 194      * unregister it */
 195     WNDCLASS wndclass;
 196     if( GetClassInfo( GetModuleHandle(NULL), "VLC DirectX", &wndclass ) )
 197         UnregisterClass( "VLC DirectX", GetModuleHandle(NULL) );
 198 #endif
 199
 200 /*****************************************************************************
 201  * OpenVideo: allocate DirectX video thread output method
 202  *****************************************************************************
 203  * This function allocates and initialize the DirectX vout method.
 204  *****************************************************************************/
 205 static int OpenVideo( vlc_object_t *p_this )
 206 {
 207     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 208     vlc_value_t val;
 209     HMODULE huser32;
 210
 211     /* Allocate structure */
 212     p_vout->p_sys = calloc( 1, sizeof( vout_sys_t ) );
 213     if( p_vout->p_sys == NULL )
 214         return VLC_ENOMEM;
 215
 216     /* Initialisations */
 217     p_vout->pf_init = Init;
 218     p_vout->pf_end = End;
 219     p_vout->pf_manage = Manage;
 220     p_vout->pf_render = NULL;
 221     p_vout->pf_display = FirstDisplay;
 222
 223     p_vout->p_sys->p_ddobject = NULL;
 224     p_vout->p_sys->p_display = NULL;
 225     p_vout->p_sys->p_current_surface = NULL;
 226     p_vout->p_sys->p_clipper = NULL;
 227     p_vout->p_sys->hwnd = p_vout->p_sys->hvideownd = NULL;
 228     p_vout->p_sys->hparent = p_vout->p_sys->hfswnd = NULL;
 229     p_vout->p_sys->i_changes = 0;
 230     p_vout->p_sys->b_wallpaper = 0;
 231     vlc_mutex_init( &p_vout->p_sys->lock );
 232     SetRectEmpty( &p_vout->p_sys->rect_display );
 233     SetRectEmpty( &p_vout->p_sys->rect_parent );
 234
 235     /* Multimonitor stuff */
 236     p_vout->p_sys->hmonitor = NULL;
 237     p_vout->p_sys->p_display_driver = NULL;
 238     p_vout->p_sys->MonitorFromWindow = NULL;
 239     p_vout->p_sys->GetMonitorInfo = NULL;
 240     if( (huser32 = GetModuleHandle( _T("USER32") ) ) )
 241     {
 242         p_vout->p_sys->MonitorFromWindow = (HMONITOR (WINAPI *)( HWND, DWORD ))
 243             GetProcAddress( huser32, _T("MonitorFromWindow") );
 244         p_vout->p_sys->GetMonitorInfo =
 245 #ifndef UNICODE
 246             GetProcAddress( huser32, "GetMonitorInfoA" );
 247 #else
 248             GetProcAddress( huser32, _T("GetMonitorInfoW") );
 249 #endif
 250     }
 251
 252     var_Create( p_vout, "overlay", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 253     var_Create( p_vout, "directx-use-sysmem", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 254     var_Create( p_vout, "directx-hw-yuv", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 255     var_Create( p_vout, "directx-3buffering", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 256     var_Create( p_vout, "directx-device", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 257     var_Create( p_vout, "video-title", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 258     var_Create( p_vout, "disable-screensaver", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 259
 260     p_vout->p_sys->b_cursor_hidden = 0;
 261     p_vout->p_sys->i_lastmoved = mdate();
 262     p_vout->p_sys->i_mouse_hide_timeout =
 263         var_GetInteger(p_vout, "mouse-hide-timeout") * 1000;
 264
 265     /* Set main window's size */
 266     p_vout->p_sys->i_window_width = p_vout->i_window_width;
 267     p_vout->p_sys->i_window_height = p_vout->i_window_height;
 268
 269     /* Create the Vout EventThread, this thread is created by us to isolate
 270      * the Win32 PeekMessage function calls. We want to do this because
 271      * Windows can stay blocked inside this call for a long time, and when
 272      * this happens it thus blocks vlc's video_output thread.
 273      * DirectXEventThread will take care of the creation of the video
 274      * window (because PeekMessage has to be called from the same thread which
 275      * created the window). */
 276     msg_Dbg( p_vout, "creating DirectXEventThread" );
 277     p_vout->p_sys->p_event =
 278         vlc_object_create( p_vout, sizeof(event_thread_t) );
 279     p_vout->p_sys->p_event->p_vout = p_vout;
 280     p_vout->p_sys->p_event->window_ready = CreateEvent( NULL, TRUE, FALSE, NULL );
 281     if( vlc_thread_create( p_vout->p_sys->p_event, "Vout Events Thread",
 282                            EventThread, 0 ) )
 283     {
 284         msg_Err( p_vout, "cannot create Vout EventThread" );
 285         CloseHandle( p_vout->p_sys->p_event->window_ready );
 286         vlc_object_release( p_vout->p_sys->p_event );
 287         p_vout->p_sys->p_event = NULL;
 288         goto error;
 289     }
 290     WaitForSingleObject( p_vout->p_sys->p_event->window_ready, INFINITE );
 291     CloseHandle( p_vout->p_sys->p_event->window_ready );
 292
 293     if( p_vout->p_sys->p_event->b_error )
 294     {
 295         msg_Err( p_vout, "Vout EventThread failed" );
 296         goto error;
 297     }
 298
 299     vlc_object_attach( p_vout->p_sys->p_event, p_vout );
 300
 301     msg_Dbg( p_vout, "Vout EventThread running" );
 302
 303     /* Initialise DirectDraw */
 304     if( DirectXInitDDraw( p_vout ) )
 305     {
 306         msg_Err( p_vout, "cannot initialize DirectX DirectDraw" );
 307         goto error;
 308     }
 309
 310     /* Create the directx display */
 311     if( DirectXCreateDisplay( p_vout ) )
 312     {
 313         msg_Err( p_vout, "cannot initialize DirectX DirectDraw" );
 314         goto error;
 315     }
 316
 317     /* Variable to indicate if the window should be on top of others */
 318     /* Trigger a callback right now */
 319     var_TriggerCallback( p_vout, "video-on-top" );
 320
 321     /* Variable to indicate if the window should be on top of others */
 322     /* Trigger a callback right now */
 323     var_Create( p_vout, "directx-wallpaper", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 324     val.psz_string = _("Wallpaper");
 325     var_Change( p_vout, "directx-wallpaper", VLC_VAR_SETTEXT, &val, NULL );
 326     var_AddCallback( p_vout, "directx-wallpaper", WallpaperCallback, NULL );
 327     var_TriggerCallback( p_vout, "directx-wallpaper" );
 328
 329     /* disable screensaver by temporarily changing system settings */
 330     p_vout->p_sys->i_spi_lowpowertimeout = 0;
 331     p_vout->p_sys->i_spi_powerofftimeout = 0;
 332     p_vout->p_sys->i_spi_screensavetimeout = 0;
 333     if( var_GetBool( p_vout, "disable-screensaver" ) ) {
 334         msg_Dbg(p_vout, "disabling screen saver");
 335         SystemParametersInfo(SPI_GETLOWPOWERTIMEOUT,
 336             0, &(p_vout->p_sys->i_spi_lowpowertimeout), 0);
 337         if( 0 != p_vout->p_sys->i_spi_lowpowertimeout ) {
 338             SystemParametersInfo(SPI_SETLOWPOWERTIMEOUT, 0, NULL, 0);
 339         }
 340         SystemParametersInfo(SPI_GETPOWEROFFTIMEOUT, 0,
 341             &(p_vout->p_sys->i_spi_powerofftimeout), 0);
 342         if( 0 != p_vout->p_sys->i_spi_powerofftimeout ) {
 343             SystemParametersInfo(SPI_SETPOWEROFFTIMEOUT, 0, NULL, 0);
 344         }
 345         SystemParametersInfo(SPI_GETSCREENSAVETIMEOUT, 0,
 346             &(p_vout->p_sys->i_spi_screensavetimeout), 0);
 347         if( 0 != p_vout->p_sys->i_spi_screensavetimeout ) {
 348             SystemParametersInfo(SPI_SETSCREENSAVETIMEOUT, 0, NULL, 0);
 349         }
 350     }
 351
 352     return VLC_SUCCESS;
 353
 354  error:
 355     CloseVideo( VLC_OBJECT(p_vout) );
 356     return VLC_EGENERIC;
 357 }
 358
 359 /*****************************************************************************
 360  * Init: initialize DirectX video thread output method
 361  *****************************************************************************
 362  * This function create the directx surfaces needed by the output thread.
 363  * It is called at the beginning of the thread.
 364  *****************************************************************************/
 365 static int Init( vout_thread_t *p_vout )
 366 {
 367     int i_chroma_backup;
 368
 369     /* Get a few default parameters */
 370     p_vout->p_sys->b_using_overlay = var_GetBool( p_vout, "overlay" );
 371     p_vout->p_sys->b_use_sysmem = var_GetBool( p_vout, "directx-use-sysmem" );
 372     p_vout->p_sys->b_hw_yuv = var_GetBool( p_vout, "directx-hw-yuv" );
 373     p_vout->p_sys->b_3buf_overlay = var_GetBool( p_vout, "directx-3buffering" );
 374
 375     /* Initialise DirectDraw if not already done.
 376      * We do this here because on multi-monitor systems we may have to
 377      * re-create the directdraw surfaces. */
 378     if( !p_vout->p_sys->p_ddobject &&
 379         DirectXInitDDraw( p_vout ) != VLC_SUCCESS )
 380     {
 381         msg_Err( p_vout, "cannot initialize DirectDraw" );
 382         return VLC_EGENERIC;
 383     }
 384
 385     /* Create the directx display */
 386     if( !p_vout->p_sys->p_display &&
 387         DirectXCreateDisplay( p_vout ) != VLC_SUCCESS )
 388     {
 389         msg_Err( p_vout, "cannot initialize DirectDraw" );
 390         return VLC_EGENERIC;
 391     }
 392
 393     /* Initialize the output structure.
 394      * Since DirectDraw can do rescaling for us, stick to the default
 395      * coordinates and aspect. */
 396     p_vout->output.i_width  = p_vout->render.i_width;
 397     p_vout->output.i_height = p_vout->render.i_height;
 398     p_vout->output.i_aspect = p_vout->render.i_aspect;
 399     p_vout->fmt_out = p_vout->fmt_in;
 400     UpdateRects( p_vout, true );
 401
 402 #define MAX_DIRECTBUFFERS 1
 403     /* Right now we use only 1 directbuffer because we don't want the
 404      * video decoder to decode directly into direct buffers as they are
 405      * created into video memory and video memory is _really_ slow */
 406
 407     /* Choose the chroma we will try first. */
 408     switch( p_vout->render.i_chroma )
 409     {
 410         case VLC_CODEC_YUYV:
 411             p_vout->output.i_chroma = VLC_CODEC_YUYV;
 412             break;
 413         case VLC_CODEC_UYVY:
 414             p_vout->output.i_chroma = VLC_CODEC_UYVY;
 415             break;
 416         case VLC_CODEC_YVYU:
 417             p_vout->output.i_chroma = VLC_CODEC_YVYU;
 418             break;
 419         default:
 420             p_vout->output.i_chroma = VLC_CODEC_YV12;
 421             break;
 422     }
 423
 424     NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 425
 426     i_chroma_backup = p_vout->output.i_chroma;
 427
 428     if( !I_OUTPUTPICTURES )
 429     {
 430         /* hmmm, it didn't work! Let's try commonly supported chromas */
 431         if( p_vout->output.i_chroma != VLC_CODEC_I420 )
 432         {
 433             p_vout->output.i_chroma = VLC_CODEC_YV12;
 434             NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 435         }
 436         if( !I_OUTPUTPICTURES )
 437         {
 438             /* hmmm, it still didn't work! Let's try another one */
 439             p_vout->output.i_chroma = VLC_CODEC_YUYV;
 440             NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 441         }
 442     }
 443
 444     if( !I_OUTPUTPICTURES )
 445     {
 446         /* If it still didn't work then don't try to use an overlay */
 447         p_vout->output.i_chroma = i_chroma_backup;
 448         p_vout->p_sys->b_using_overlay = 0;
 449         msg_Warn( p_vout, "Could not initialize directx overlay" ) ;
 450         NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 451     }
 452
 453     /* Change the window title bar text */
 454     PostMessage( p_vout->p_sys->hwnd, WM_VLC_CHANGE_TEXT, 0, 0 );
 455
 456     p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 457     return VLC_SUCCESS;
 458 }
 459
 460 /*****************************************************************************
 461  * End: terminate Sys video thread output method
 462  *****************************************************************************
 463  * Terminate an output method created by Create.
 464  * It is called at the end of the thread.
 465  *****************************************************************************/
 466 static void End( vout_thread_t *p_vout )
 467 {
 468     FreePictureVec( p_vout, p_vout->p_picture, I_OUTPUTPICTURES );
 469
 470     DirectXCloseDisplay( p_vout );
 471     DirectXCloseDDraw( p_vout );
 472
 473     return;
 474 }
 475
 476 /*****************************************************************************
 477  * CloseVideo: destroy Sys video thread output method
 478  *****************************************************************************
 479  * Terminate an output method created by Create
 480  *****************************************************************************/
 481 static void CloseVideo( vlc_object_t *p_this )
 482 {
 483     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 484
 485     if( p_vout->b_fullscreen )
 486     {
 487         msg_Dbg( p_vout, "Quitting fullscreen" );
 488         Win32ToggleFullscreen( p_vout );
 489         /* Force fullscreen in the core for the next video */
 490         var_SetBool( p_vout, "fullscreen", true );
 491     }
 492
 493     if( p_vout->p_sys->p_event )
 494     {
 495         vlc_object_detach( p_vout->p_sys->p_event );
 496
 497         /* Kill Vout EventThread */
 498         vlc_object_kill( p_vout->p_sys->p_event );
 499
 500         /* we need to be sure Vout EventThread won't stay stuck in
 501          * GetMessage, so we send a fake message */
 502         if( p_vout->p_sys->hwnd )
 503         {
 504             PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0);
 505         }
 506
 507         vlc_thread_join( p_vout->p_sys->p_event );
 508         vlc_object_release( p_vout->p_sys->p_event );
 509     }
 510
 511     vlc_mutex_destroy( &p_vout->p_sys->lock );
 512
 513     /* Make sure the wallpaper is restored */
 514     SwitchWallpaperMode( p_vout, false );
 515
 516     /* restore screensaver system settings */
 517     if( 0 != p_vout->p_sys->i_spi_lowpowertimeout ) {
 518         SystemParametersInfo(SPI_SETLOWPOWERTIMEOUT,
 519             p_vout->p_sys->i_spi_lowpowertimeout, NULL, 0);
 520     }
 521     if( 0 != p_vout->p_sys->i_spi_powerofftimeout ) {
 522         SystemParametersInfo(SPI_SETPOWEROFFTIMEOUT,
 523             p_vout->p_sys->i_spi_powerofftimeout, NULL, 0);
 524     }
 525     if( 0 != p_vout->p_sys->i_spi_screensavetimeout ) {
 526         SystemParametersInfo(SPI_SETSCREENSAVETIMEOUT,
 527             p_vout->p_sys->i_spi_screensavetimeout, NULL, 0);
 528     }
 529
 530     free( p_vout->p_sys );
 531     p_vout->p_sys = NULL;
 532 }
 533
 534 /*****************************************************************************
 535  * Manage: handle Sys events
 536  *****************************************************************************
 537  * This function should be called regularly by the video output thread.
 538  * It returns a non null value if an error occurred.
 539  *****************************************************************************/
 540 static int Manage( vout_thread_t *p_vout )
 541 {
 542     /* If we do not control our window, we check for geometry changes
 543      * ourselves because the parent might not send us its events. */
 544     vlc_mutex_lock( &p_vout->p_sys->lock );
 545     if( p_vout->p_sys->hparent && !p_vout->b_fullscreen )
 546     {
 547         RECT rect_parent;
 548         POINT point;
 549
 550         vlc_mutex_unlock( &p_vout->p_sys->lock );
 551
 552         GetClientRect( p_vout->p_sys->hparent, &rect_parent );
 553         point.x = point.y = 0;
 554         ClientToScreen( p_vout->p_sys->hparent, &point );
 555         OffsetRect( &rect_parent, point.x, point.y );
 556
 557         if( !EqualRect( &rect_parent, &p_vout->p_sys->rect_parent ) )
 558         {
 559             p_vout->p_sys->rect_parent = rect_parent;
 560
 561             /* This one is to force the update even if only
 562              * the position has changed */
 563             SetWindowPos( p_vout->p_sys->hwnd, 0, 1, 1,
 564                           rect_parent.right - rect_parent.left,
 565                           rect_parent.bottom - rect_parent.top, 0 );
 566
 567             SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
 568                           rect_parent.right - rect_parent.left,
 569                           rect_parent.bottom - rect_parent.top, 0 );
 570         }
 571     }
 572     else
 573     {
 574         vlc_mutex_unlock( &p_vout->p_sys->lock );
 575     }
 576
 577     /*
 578      * Position Change
 579      */
 580     if( p_vout->p_sys->i_changes & DX_POSITION_CHANGE )
 581     {
 582         p_vout->p_sys->i_changes &= ~DX_POSITION_CHANGE;
 583
 584         /* Check if we are still on the same monitor */
 585         if( p_vout->p_sys->MonitorFromWindow &&
 586             p_vout->p_sys->hmonitor !=
 587                 p_vout->p_sys->MonitorFromWindow( p_vout->p_sys->hwnd,
 588                                                   MONITOR_DEFAULTTONEAREST ) )
 589         {
 590             /* This will force the vout core to recreate the picture buffers */
 591             p_vout->i_changes |= VOUT_PICTURE_BUFFERS_CHANGE;
 592         }
 593     }
 594
 595     /* autoscale toggle */
 596     if( p_vout->i_changes & VOUT_SCALE_CHANGE )
 597     {
 598         p_vout->i_changes &= ~VOUT_SCALE_CHANGE;
 599
 600         p_vout->b_autoscale = var_GetBool( p_vout, "autoscale" );
 601         p_vout->i_zoom = (int) ZOOM_FP_FACTOR;
 602
 603         UpdateRects( p_vout, true );
 604     }
 605
 606     /* scaling factor */
 607     if( p_vout->i_changes & VOUT_ZOOM_CHANGE )
 608     {
 609         p_vout->i_changes &= ~VOUT_ZOOM_CHANGE;
 610
 611         p_vout->b_autoscale = false;
 612         p_vout->i_zoom =
 613             (int)( ZOOM_FP_FACTOR * var_GetFloat( p_vout, "scale" ) );
 614         UpdateRects( p_vout, true );
 615     }
 616
 617     /* Check for cropping / aspect changes */
 618     if( p_vout->i_changes & VOUT_CROP_CHANGE ||
 619         p_vout->i_changes & VOUT_ASPECT_CHANGE )
 620     {
 621         p_vout->i_changes &= ~VOUT_CROP_CHANGE;
 622         p_vout->i_changes &= ~VOUT_ASPECT_CHANGE;
 623
 624         p_vout->fmt_out.i_x_offset = p_vout->fmt_in.i_x_offset;
 625         p_vout->fmt_out.i_y_offset = p_vout->fmt_in.i_y_offset;
 626         p_vout->fmt_out.i_visible_width = p_vout->fmt_in.i_visible_width;
 627         p_vout->fmt_out.i_visible_height = p_vout->fmt_in.i_visible_height;
 628         p_vout->fmt_out.i_aspect = p_vout->fmt_in.i_aspect;
 629         p_vout->fmt_out.i_sar_num = p_vout->fmt_in.i_sar_num;
 630         p_vout->fmt_out.i_sar_den = p_vout->fmt_in.i_sar_den;
 631         p_vout->output.i_aspect = p_vout->fmt_in.i_aspect;
 632         UpdateRects( p_vout, true );
 633     }
 634
 635     /* We used to call the Win32 PeekMessage function here to read the window
 636      * messages. But since window can stay blocked into this function for a
 637      * long time (for example when you move your window on the screen), I
 638      * decided to isolate PeekMessage in another thread. */
 639
 640     if( p_vout->p_sys->i_changes & DX_WALLPAPER_CHANGE )
 641     {
 642         SwitchWallpaperMode( p_vout, !p_vout->p_sys->b_wallpaper );
 643         p_vout->p_sys->i_changes &= ~DX_WALLPAPER_CHANGE;
 644         DirectDrawUpdateOverlay( p_vout );
 645     }
 646
 647     /*
 648      * Fullscreen change
 649      */
 650     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
 651         || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
 652     {
 653         Win32ToggleFullscreen( p_vout );
 654
 655         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 656         p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 657     }
 658
 659     /*
 660      * Pointer change
 661      */
 662     if( p_vout->b_fullscreen && !p_vout->p_sys->b_cursor_hidden &&
 663         (mdate() - p_vout->p_sys->i_lastmoved) >
 664             p_vout->p_sys->i_mouse_hide_timeout )
 665     {
 666         POINT point;
 667         HWND hwnd;
 668
 669         /* Hide the cursor only if it is inside our window */
 670         GetCursorPos( &point );
 671         hwnd = WindowFromPoint(point);
 672         if( hwnd == p_vout->p_sys->hwnd || hwnd == p_vout->p_sys->hvideownd )
 673         {
 674             PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
 675         }
 676         else
 677         {
 678             p_vout->p_sys->i_lastmoved = mdate();
 679         }
 680     }
 681
 682     /*
 683      * "Always on top" status change
 684      */
 685     if( p_vout->p_sys->b_on_top_change )
 686     {
 687         vlc_value_t val;
 688         HMENU hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );
 689
 690         var_Get( p_vout, "video-on-top", &val );
 691
 692         /* Set the window on top if necessary */
 693         if( val.b_bool && !( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
 694                            & WS_EX_TOPMOST ) )
 695         {
 696             CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
 697                            MF_BYCOMMAND | MFS_CHECKED );
 698             SetWindowPos( p_vout->p_sys->hwnd, HWND_TOPMOST, 0, 0, 0, 0,
 699                           SWP_NOSIZE | SWP_NOMOVE );
 700         }
 701         else
 702         /* The window shouldn't be on top */
 703         if( !val.b_bool && ( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
 704                            & WS_EX_TOPMOST ) )
 705         {
 706             CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
 707                            MF_BYCOMMAND | MFS_UNCHECKED );
 708             SetWindowPos( p_vout->p_sys->hwnd, HWND_NOTOPMOST, 0, 0, 0, 0,
 709                           SWP_NOSIZE | SWP_NOMOVE );
 710         }
 711
 712         p_vout->p_sys->b_on_top_change = false;
 713     }
 714
 715     /* Check if the event thread is still running */
 716     if( !vlc_object_alive (p_vout->p_sys->p_event) )
 717     {
 718         return VLC_EGENERIC; /* exit */
 719     }
 720
 721     return VLC_SUCCESS;
 722 }
 723
 724 /*****************************************************************************
 725  * Display: displays previously rendered output
 726  *****************************************************************************
 727  * This function sends the currently rendered image to the display, wait until
 728  * it is displayed and switch the two rendering buffers, preparing next frame.
 729  *****************************************************************************/
 730 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 731 {
 732     HRESULT dxresult;
 733
 734     if( (p_vout->p_sys->p_display == NULL) )
 735     {
 736         msg_Warn( p_vout, "no display!" );
 737         return;
 738     }
 739
 740     /* Our surface can be lost so be sure to check this
 741      * and restore it if need be */
 742     if( IDirectDrawSurface2_IsLost( p_vout->p_sys->p_display )
 743         == DDERR_SURFACELOST )
 744     {
 745         if( IDirectDrawSurface2_Restore( p_vout->p_sys->p_display ) == DD_OK &&
 746             p_vout->p_sys->b_using_overlay )
 747             DirectDrawUpdateOverlay( p_vout );
 748     }
 749
 750     if( !p_vout->p_sys->b_using_overlay )
 751     {
 752         DDBLTFX  ddbltfx;
 753
 754         /* We ask for the "NOTEARING" option */
 755         memset( &ddbltfx, 0, sizeof(DDBLTFX) );
 756         ddbltfx.dwSize = sizeof(DDBLTFX);
 757         ddbltfx.dwDDFX = DDBLTFX_NOTEARING;
 758
 759         /* Blit video surface to display */
 760         dxresult = IDirectDrawSurface2_Blt( p_vout->p_sys->p_display,
 761                                             &p_vout->p_sys->rect_dest_clipped,
 762                                             p_pic->p_sys->p_surface,
 763                                             &p_vout->p_sys->rect_src_clipped,
 764                                             DDBLT_ASYNC, &ddbltfx );
 765         if( dxresult != DD_OK )
 766         {
 767             msg_Warn( p_vout, "could not blit surface (error %li)", dxresult );
 768             return;
 769         }
 770     }
 771     else /* using overlay */
 772     {
 773         /* Flip the overlay buffers if we are using back buffers */
 774         if( p_pic->p_sys->p_front_surface == p_pic->p_sys->p_surface )
 775         {
 776             return;
 777         }
 778
 779         dxresult = IDirectDrawSurface2_Flip( p_pic->p_sys->p_front_surface,
 780                                              NULL, DDFLIP_WAIT );
 781         if( dxresult != DD_OK )
 782         {
 783             msg_Warn( p_vout, "could not flip overlay (error %li)", dxresult );
 784         }
 785
 786         /* set currently displayed pic */
 787         p_vout->p_sys->p_current_surface = p_pic->p_sys->p_front_surface;
 788
 789         /* Lock surface to get all the required info */
 790         if( DirectXLockSurface( p_vout, p_pic ) )
 791         {
 792             /* AAARRGG */
 793             msg_Warn( p_vout, "cannot lock surface" );
 794             return;
 795         }
 796         DirectXUnlockSurface( p_vout, p_pic );
 797     }
 798 }
 799
 800 /*
 801 ** this function is only used once when the first picture is received
 802 ** this function will show the video window once video is ready for
 803 ** display.
 804 */
 805
 806 static void FirstDisplay( vout_thread_t *p_vout, picture_t *p_pic )
 807 {
 808     /* get initial picture rendered on overlay surface */
 809     Display(p_vout, p_pic);
 810
 811     IDirectDraw_WaitForVerticalBlank(p_vout->p_sys->p_ddobject,
 812             DDWAITVB_BLOCKBEGIN, NULL);
 813
 814     if( p_vout->p_sys->b_using_overlay )
 815     {
 816         /* set the colorkey as the backgound brush for the video window */
 817         SetClassLong( p_vout->p_sys->hvideownd, GCL_HBRBACKGROUND,
 818                       (LONG)CreateSolidBrush( p_vout->p_sys->i_rgb_colorkey ) );
 819     }
 820     /*
 821     ** Video window is initially hidden, show it now since we got a
 822     ** picture to show.
 823     */
 824     SetWindowPos( p_vout->p_sys->hvideownd, NULL, 0, 0, 0, 0,
 825         SWP_ASYNCWINDOWPOS|
 826         SWP_FRAMECHANGED|
 827         SWP_SHOWWINDOW|
 828         SWP_NOMOVE|
 829         SWP_NOSIZE|
 830         SWP_NOZORDER );
 831
 832     /* use and restores proper display function for further pictures */
 833     p_vout->pf_display = Display;
 834 }
 835
 836 /* following functions are local */
 837
 838 /*****************************************************************************
 839  * DirectXEnumCallback: Device enumeration
 840  *****************************************************************************
 841  * This callback function is called by DirectDraw once for each
 842  * available DirectDraw device.
 843  *****************************************************************************/
 844 BOOL WINAPI DirectXEnumCallback( GUID* p_guid, LPTSTR psz_desc,
 845                                  LPTSTR psz_drivername, VOID* p_context,
 846                                  HMONITOR hmon )
 847 {
 848     vout_thread_t *p_vout = (vout_thread_t *)p_context;
 849     vlc_value_t device;
 850
 851     msg_Dbg( p_vout, "DirectXEnumCallback: %s, %s", psz_desc, psz_drivername );
 852
 853     if( hmon )
 854     {
 855         var_Get( p_vout, "directx-device", &device );
 856
 857         if( ( !device.psz_string || !*device.psz_string ) &&
 858             hmon == p_vout->p_sys->hmonitor )
 859         {
 860             free( device.psz_string );
 861         }
 862         else if( strcmp( psz_drivername, device.psz_string ) == 0 )
 863         {
 864             MONITORINFO monitor_info;
 865             monitor_info.cbSize = sizeof( MONITORINFO );
 866
 867             if( p_vout->p_sys->GetMonitorInfo( hmon, &monitor_info ) )
 868             {
 869                 RECT rect;
 870
 871                 /* Move window to the right screen */
 872                 GetWindowRect( p_vout->p_sys->hwnd, &rect );
 873                 if( !IntersectRect( &rect, &rect, &monitor_info.rcWork ) )
 874                 {
 875                     rect.left = monitor_info.rcWork.left;
 876                     rect.top = monitor_info.rcWork.top;
 877                     msg_Dbg( p_vout, "DirectXEnumCallback: setting window "
 878                              "position to %ld,%ld", rect.left, rect.top );
 879                     SetWindowPos( p_vout->p_sys->hwnd, NULL,
 880                                   rect.left, rect.top, 0, 0,
 881                                   SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 882                 }
 883             }
 884
 885             p_vout->p_sys->hmonitor = hmon;
 886             free( device.psz_string );
 887         }
 888         else
 889         {
 890             free( device.psz_string );
 891             return TRUE; /* Keep enumerating */
 892         }
 893
 894         msg_Dbg( p_vout, "selecting %s, %s", psz_desc, psz_drivername );
 895         p_vout->p_sys->p_display_driver = malloc( sizeof(GUID) );
 896         if( p_vout->p_sys->p_display_driver )
 897             memcpy( p_vout->p_sys->p_display_driver, p_guid, sizeof(GUID) );
 898     }
 899
 900     return TRUE; /* Keep enumerating */
 901 }
 902
 903 /*****************************************************************************
 904  * DirectXInitDDraw: Takes care of all the DirectDraw initialisations
 905  *****************************************************************************
 906  * This function initialise and allocate resources for DirectDraw.
 907  *****************************************************************************/
 908 static int DirectXInitDDraw( vout_thread_t *p_vout )
 909 {
 910     HRESULT dxresult;
 911     HRESULT (WINAPI *OurDirectDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *);
 912     HRESULT (WINAPI *OurDirectDrawEnumerateEx)( LPDDENUMCALLBACKEXA, LPVOID,
 913                                                 DWORD );
 914     LPDIRECTDRAW p_ddobject;
 915
 916     msg_Dbg( p_vout, "DirectXInitDDraw" );
 917
 918     /* Load direct draw DLL */
 919     p_vout->p_sys->hddraw_dll = LoadLibrary(_T("DDRAW.DLL"));
 920     if( p_vout->p_sys->hddraw_dll == NULL )
 921     {
 922         msg_Warn( p_vout, "DirectXInitDDraw failed loading ddraw.dll" );
 923         goto error;
 924     }
 925
 926     OurDirectDrawCreate =
 927       (void *)GetProcAddress( p_vout->p_sys->hddraw_dll,
 928                               _T("DirectDrawCreate") );
 929     if( OurDirectDrawCreate == NULL )
 930     {
 931         msg_Err( p_vout, "DirectXInitDDraw failed GetProcAddress" );
 932         goto error;
 933     }
 934
 935     OurDirectDrawEnumerateEx =
 936       (void *)GetProcAddress( p_vout->p_sys->hddraw_dll,
 937 #ifndef UNICODE
 938                               "DirectDrawEnumerateExA" );
 939 #else
 940                               _T("DirectDrawEnumerateExW") );
 941 #endif
 942
 943     if( OurDirectDrawEnumerateEx && p_vout->p_sys->MonitorFromWindow )
 944     {
 945         vlc_value_t device;
 946
 947         var_Get( p_vout, "directx-device", &device );
 948         if( device.psz_string )
 949         {
 950             msg_Dbg( p_vout, "directx-device: %s", device.psz_string );
 951             free( device.psz_string );
 952         }
 953
 954         p_vout->p_sys->hmonitor =
 955             p_vout->p_sys->MonitorFromWindow( p_vout->p_sys->hwnd,
 956                                               MONITOR_DEFAULTTONEAREST );
 957
 958         /* Enumerate displays */
 959         OurDirectDrawEnumerateEx( DirectXEnumCallback, p_vout,
 960                                   DDENUM_ATTACHEDSECONDARYDEVICES );
 961     }
 962
 963     /* Initialize DirectDraw now */
 964     dxresult = OurDirectDrawCreate( p_vout->p_sys->p_display_driver,
 965                                     &p_ddobject, NULL );
 966     if( dxresult != DD_OK )
 967     {
 968         msg_Err( p_vout, "DirectXInitDDraw cannot initialize DDraw" );
 969         goto error;
 970     }
 971
 972     /* Get the IDirectDraw2 interface */
 973     dxresult = IDirectDraw_QueryInterface( p_ddobject, &IID_IDirectDraw2,
 974                                         (LPVOID *)&p_vout->p_sys->p_ddobject );
 975     /* Release the unused interface */
 976     IDirectDraw_Release( p_ddobject );
 977     if( dxresult != DD_OK )
 978     {
 979         msg_Err( p_vout, "cannot get IDirectDraw2 interface" );
 980         goto error;
 981     }
 982
 983     /* Set DirectDraw Cooperative level, ie what control we want over Windows
 984      * display */
 985     dxresult = IDirectDraw2_SetCooperativeLevel( p_vout->p_sys->p_ddobject,
 986                                                  NULL, DDSCL_NORMAL );
 987     if( dxresult != DD_OK )
 988     {
 989         msg_Err( p_vout, "cannot set direct draw cooperative level" );
 990         goto error;
 991     }
 992
 993     /* Get the size of the current display device */
 994     if( p_vout->p_sys->hmonitor && p_vout->p_sys->GetMonitorInfo )
 995     {
 996         MONITORINFO monitor_info;
 997         monitor_info.cbSize = sizeof( MONITORINFO );
 998         p_vout->p_sys->GetMonitorInfo( p_vout->p_sys->hmonitor,
 999                                        &monitor_info );
1000         p_vout->p_sys->rect_display = monitor_info.rcMonitor;
1001     }
1002     else
1003     {
1004         p_vout->p_sys->rect_display.left = 0;
1005         p_vout->p_sys->rect_display.top = 0;
1006         p_vout->p_sys->rect_display.right  = GetSystemMetrics(SM_CXSCREEN);
1007         p_vout->p_sys->rect_display.bottom = GetSystemMetrics(SM_CYSCREEN);
1008     }
1009
1010     msg_Dbg( p_vout, "screen dimensions (%lix%li,%lix%li)",
1011              p_vout->p_sys->rect_display.left,
1012              p_vout->p_sys->rect_display.top,
1013              p_vout->p_sys->rect_display.right,
1014              p_vout->p_sys->rect_display.bottom );
1015
1016     /* Probe the capabilities of the hardware */
1017     DirectXGetDDrawCaps( p_vout );
1018
1019     msg_Dbg( p_vout, "End DirectXInitDDraw" );
1020     return VLC_SUCCESS;
1021
1022  error:
1023     if( p_vout->p_sys->p_ddobject )
1024         IDirectDraw2_Release( p_vout->p_sys->p_ddobject );
1025     if( p_vout->p_sys->hddraw_dll )
1026         FreeLibrary( p_vout->p_sys->hddraw_dll );
1027     p_vout->p_sys->hddraw_dll = NULL;
1028     p_vout->p_sys->p_ddobject = NULL;
1029     return VLC_EGENERIC;
1030 }
1031
1032 /*****************************************************************************
1033  * DirectXCreateDisplay: create the DirectDraw display.
1034  *****************************************************************************
1035  * Create and initialize display according to preferences specified in the vout
1036  * thread fields.
1037  *****************************************************************************/
1038 static int DirectXCreateDisplay( vout_thread_t *p_vout )
1039 {
1040     HRESULT              dxresult;
1041     DDSURFACEDESC        ddsd;
1042     LPDIRECTDRAWSURFACE  p_display;
1043
1044     msg_Dbg( p_vout, "DirectXCreateDisplay" );
1045
1046     /* Now get the primary surface. This surface is what you actually see
1047      * on your screen */
1048     memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
1049     ddsd.dwSize = sizeof(DDSURFACEDESC);
1050     ddsd.dwFlags = DDSD_CAPS;
1051     ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
1052
1053     dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
1054                                            &ddsd, &p_display, NULL );
1055     if( dxresult != DD_OK )
1056     {
1057         msg_Err( p_vout, "cannot get primary surface (error %li)", dxresult );
1058         return VLC_EGENERIC;
1059     }
1060
1061     dxresult = IDirectDrawSurface_QueryInterface( p_display,
1062                                          &IID_IDirectDrawSurface2,
1063                                          (LPVOID *)&p_vout->p_sys->p_display );
1064     /* Release the old interface */
1065     IDirectDrawSurface_Release( p_display );
1066     if ( dxresult != DD_OK )
1067     {
1068         msg_Err( p_vout, "cannot query IDirectDrawSurface2 interface "
1069                          "(error %li)", dxresult );
1070         return VLC_EGENERIC;
1071     }
1072
1073     /* The clipper will be used only in non-overlay mode */
1074     DirectXCreateClipper( p_vout );
1075
1076     /* Make sure the colorkey will be painted */
1077     p_vout->p_sys->i_colorkey = 1;
1078     p_vout->p_sys->i_rgb_colorkey =
1079         DirectXFindColorkey( p_vout, &p_vout->p_sys->i_colorkey );
1080
1081     UpdateRects( p_vout, true );
1082
1083     return VLC_SUCCESS;
1084 }
1085
1086 /*****************************************************************************
1087  * DirectXCreateClipper: Create a clipper that will be used when blitting the
1088  *                       RGB surface to the main display.
1089  *****************************************************************************
1090  * This clipper prevents us to modify by mistake anything on the screen
1091  * which doesn't belong to our window. For example when a part of our video
1092  * window is hidden by another window.
1093  *****************************************************************************/
1094 static int DirectXCreateClipper( vout_thread_t *p_vout )
1095 {
1096     HRESULT dxresult;
1097
1098     msg_Dbg( p_vout, "DirectXCreateClipper" );
1099
1100     /* Create the clipper */
1101     dxresult = IDirectDraw2_CreateClipper( p_vout->p_sys->p_ddobject, 0,
1102                                            &p_vout->p_sys->p_clipper, NULL );
1103     if( dxresult != DD_OK )
1104     {
1105         msg_Warn( p_vout, "cannot create clipper (error %li)", dxresult );
1106         goto error;
1107     }
1108
1109     /* Associate the clipper to the window */
1110     dxresult = IDirectDrawClipper_SetHWnd( p_vout->p_sys->p_clipper, 0,
1111                                            p_vout->p_sys->hvideownd );
1112     if( dxresult != DD_OK )
1113     {
1114         msg_Warn( p_vout, "cannot attach clipper to window (error %li)",
1115                           dxresult );
1116         goto error;
1117     }
1118
1119     /* associate the clipper with the surface */
1120     dxresult = IDirectDrawSurface_SetClipper(p_vout->p_sys->p_display,
1121                                              p_vout->p_sys->p_clipper);
1122     if( dxresult != DD_OK )
1123     {
1124         msg_Warn( p_vout, "cannot attach clipper to surface (error %li)",
1125                           dxresult );
1126         goto error;
1127     }
1128
1129     return VLC_SUCCESS;
1130
1131  error:
1132     if( p_vout->p_sys->p_clipper )
1133     {
1134         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
1135     }
1136     p_vout->p_sys->p_clipper = NULL;
1137     return VLC_EGENERIC;
1138 }
1139
1140 /*****************************************************************************
1141  * DirectXCreateSurface: create an YUV overlay or RGB surface for the video.
1142  *****************************************************************************
1143  * The best method of display is with an YUV overlay because the YUV->RGB
1144  * conversion is done in hardware.
1145  * You can also create a plain RGB surface.
1146  * ( Maybe we could also try an RGB overlay surface, which could have hardware
1147  * scaling and which would also be faster in window mode because you don't
1148  * need to do any blitting to the main display...)
1149  *****************************************************************************/
1150 static int DirectXCreateSurface( vout_thread_t *p_vout,
1151                                  LPDIRECTDRAWSURFACE2 *pp_surface_final,
1152                                  int i_chroma, int b_overlay,
1153                                  int i_backbuffers )
1154 {
1155     HRESULT dxresult;
1156     LPDIRECTDRAWSURFACE p_surface;
1157     DDSURFACEDESC ddsd;
1158
1159     /* Create the video surface */
1160     if( b_overlay )
1161     {
1162         /* Now try to create the YUV overlay surface.
1163          * This overlay will be displayed on top of the primary surface.
1164          * A color key is used to determine whether or not the overlay will be
1165          * displayed, ie the overlay will be displayed in place of the primary
1166          * surface wherever the primary surface will have this color.
1167          * The video window has been created with a background of this color so
1168          * the overlay will be only displayed on top of this window */
1169
1170         memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
1171         ddsd.dwSize = sizeof(DDSURFACEDESC);
1172         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1173         ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
1174         ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
1175         ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
1176         ddsd.dwFlags |= (i_backbuffers ? DDSD_BACKBUFFERCOUNT : 0);
1177         ddsd.ddsCaps.dwCaps = DDSCAPS_OVERLAY | DDSCAPS_VIDEOMEMORY;
1178         ddsd.ddsCaps.dwCaps |= (i_backbuffers ? DDSCAPS_COMPLEX | DDSCAPS_FLIP
1179                                 : 0 );
1180         ddsd.dwHeight = p_vout->render.i_height;
1181         ddsd.dwWidth = p_vout->render.i_width;
1182         ddsd.dwBackBufferCount = i_backbuffers;
1183
1184         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
1185                                                &ddsd, &p_surface, NULL );
1186         if( dxresult != DD_OK )
1187         {
1188             *pp_surface_final = NULL;
1189             return VLC_EGENERIC;
1190         }
1191     }
1192
1193     if( !b_overlay )
1194     {
1195         bool b_rgb_surface =
1196             ( i_chroma == VLC_CODEC_RGB8 )
1197           || ( i_chroma == VLC_CODEC_RGB15 )
1198            || ( i_chroma == VLC_CODEC_RGB16 )
1199             || ( i_chroma == VLC_CODEC_RGB24 )
1200              || ( i_chroma == VLC_CODEC_RGB32 );
1201
1202         memset( &ddsd, 0, sizeof( DDSURFACEDESC ) );
1203         ddsd.dwSize = sizeof(DDSURFACEDESC);
1204         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1205         ddsd.dwFlags = DDSD_HEIGHT | DDSD_WIDTH | DDSD_CAPS;
1206         ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
1207         ddsd.dwHeight = p_vout->render.i_height;
1208         ddsd.dwWidth = p_vout->render.i_width;
1209
1210         if( p_vout->p_sys->b_use_sysmem )
1211             ddsd.ddsCaps.dwCaps |= DDSCAPS_SYSTEMMEMORY;
1212         else
1213             ddsd.ddsCaps.dwCaps |= DDSCAPS_VIDEOMEMORY;
1214
1215         if( !b_rgb_surface )
1216         {
1217             ddsd.dwFlags |= DDSD_PIXELFORMAT;
1218             ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
1219             ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
1220         }
1221
1222         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
1223                                                &ddsd, &p_surface, NULL );
1224         if( dxresult != DD_OK )
1225         {
1226             *pp_surface_final = NULL;
1227             return VLC_EGENERIC;
1228         }
1229     }
1230
1231     /* Now that the surface is created, try to get a newer DirectX interface */
1232     dxresult = IDirectDrawSurface_QueryInterface( p_surface,
1233                                      &IID_IDirectDrawSurface2,
1234                                      (LPVOID *)pp_surface_final );
1235     IDirectDrawSurface_Release( p_surface );    /* Release the old interface */
1236     if ( dxresult != DD_OK )
1237     {
1238         msg_Err( p_vout, "cannot query IDirectDrawSurface2 interface "
1239                          "(error %li)", dxresult );
1240         *pp_surface_final = NULL;
1241         return VLC_EGENERIC;
1242     }
1243
1244     if( b_overlay )
1245     {
1246         /* Check the overlay is useable as some graphics cards allow creating
1247          * several overlays but only one can be used at one time. */
1248         p_vout->p_sys->p_current_surface = *pp_surface_final;
1249         if( DirectDrawUpdateOverlay( p_vout ) != VLC_SUCCESS )
1250         {
1251             IDirectDrawSurface2_Release( *pp_surface_final );
1252             *pp_surface_final = NULL;
1253             msg_Err( p_vout, "overlay unuseable (might already be in use)" );
1254             return VLC_EGENERIC;
1255         }
1256     }
1257
1258     return VLC_SUCCESS;
1259 }
1260
1261 /*****************************************************************************
1262  * DirectDrawUpdateOverlay: Move or resize overlay surface on video display.
1263  *****************************************************************************
1264  * This function is used to move or resize an overlay surface on the screen.
1265  * Ususally the overlay is moved by the user and thus, by a move or resize
1266  * event (in Manage).
1267  *****************************************************************************/
1268 int DirectDrawUpdateOverlay( vout_thread_t *p_vout )
1269 {
1270     DDOVERLAYFX     ddofx;
1271     DWORD           dwFlags;
1272     HRESULT         dxresult;
1273     RECT            rect_src = p_vout->p_sys->rect_src_clipped;
1274     RECT            rect_dest = p_vout->p_sys->rect_dest_clipped;
1275
1276     if( !p_vout->p_sys->b_using_overlay ) return VLC_EGENERIC;
1277
1278     if( p_vout->p_sys->b_wallpaper )
1279     {
1280         int i_x, i_y, i_width, i_height;
1281
1282         rect_src.left = p_vout->fmt_out.i_x_offset;
1283         rect_src.top = p_vout->fmt_out.i_y_offset;
1284         rect_src.right = rect_src.left + p_vout->fmt_out.i_visible_width;
1285         rect_src.bottom = rect_src.top + p_vout->fmt_out.i_visible_height;
1286
1287         rect_dest = p_vout->p_sys->rect_display;
1288         vout_PlacePicture( p_vout, rect_dest.right, rect_dest.bottom,
1289                            &i_x, &i_y, &i_width, &i_height );
1290
1291         rect_dest.left += i_x;
1292         rect_dest.right = rect_dest.left + i_width;
1293         rect_dest.top += i_y;
1294         rect_dest.bottom = rect_dest.top + i_height;
1295     }
1296
1297     vlc_mutex_lock( &p_vout->p_sys->lock );
1298     if( p_vout->p_sys->p_current_surface == NULL )
1299     {
1300         vlc_mutex_unlock( &p_vout->p_sys->lock );
1301         return VLC_EGENERIC;
1302     }
1303
1304     /* The new window dimensions should already have been computed by the
1305      * caller of this function */
1306
1307     /* Position and show the overlay */
1308     memset(&ddofx, 0, sizeof(DDOVERLAYFX));
1309     ddofx.dwSize = sizeof(DDOVERLAYFX);
1310     ddofx.dckDestColorkey.dwColorSpaceLowValue = p_vout->p_sys->i_colorkey;
1311     ddofx.dckDestColorkey.dwColorSpaceHighValue = p_vout->p_sys->i_colorkey;
1312
1313     dwFlags = DDOVER_SHOW | DDOVER_KEYDESTOVERRIDE;
1314
1315     dxresult = IDirectDrawSurface2_UpdateOverlay(
1316                    p_vout->p_sys->p_current_surface,
1317                    &rect_src, p_vout->p_sys->p_display, &rect_dest,
1318                    dwFlags, &ddofx );
1319
1320     vlc_mutex_unlock( &p_vout->p_sys->lock );
1321
1322     if(dxresult != DD_OK)
1323     {
1324         msg_Warn( p_vout, "DirectDrawUpdateOverlay cannot move/resize overlay" );
1325         return VLC_EGENERIC;
1326     }
1327
1328     return VLC_SUCCESS;
1329 }
1330
1331 /*****************************************************************************
1332  * DirectXCloseDDraw: Release the DDraw object allocated by DirectXInitDDraw
1333  *****************************************************************************
1334  * This function returns all resources allocated by DirectXInitDDraw.
1335  *****************************************************************************/
1336 static void DirectXCloseDDraw( vout_thread_t *p_vout )
1337 {
1338     msg_Dbg( p_vout, "DirectXCloseDDraw" );
1339     if( p_vout->p_sys->p_ddobject != NULL )
1340     {
1341         IDirectDraw2_Release(p_vout->p_sys->p_ddobject);
1342         p_vout->p_sys->p_ddobject = NULL;
1343     }
1344
1345     if( p_vout->p_sys->hddraw_dll != NULL )
1346     {
1347         FreeLibrary( p_vout->p_sys->hddraw_dll );
1348         p_vout->p_sys->hddraw_dll = NULL;
1349     }
1350
1351     free( p_vout->p_sys->p_display_driver );
1352     p_vout->p_sys->p_display_driver = NULL;
1353
1354     p_vout->p_sys->hmonitor = NULL;
1355 }
1356
1357 /*****************************************************************************
1358  * DirectXCloseDisplay: close and reset the DirectX display device
1359  *****************************************************************************
1360  * This function returns all resources allocated by DirectXCreateDisplay.
1361  *****************************************************************************/
1362 static void DirectXCloseDisplay( vout_thread_t *p_vout )
1363 {
1364     msg_Dbg( p_vout, "DirectXCloseDisplay" );
1365
1366     if( p_vout->p_sys->p_clipper != NULL )
1367     {
1368         msg_Dbg( p_vout, "DirectXCloseDisplay clipper" );
1369         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
1370         p_vout->p_sys->p_clipper = NULL;
1371     }
1372
1373     if( p_vout->p_sys->p_display != NULL )
1374     {
1375         msg_Dbg( p_vout, "DirectXCloseDisplay display" );
1376         IDirectDrawSurface2_Release( p_vout->p_sys->p_display );
1377         p_vout->p_sys->p_display = NULL;
1378     }
1379 }
1380
1381 /*****************************************************************************
1382  * DirectXCloseSurface: close the YUV overlay or RGB surface.
1383  *****************************************************************************
1384  * This function returns all resources allocated for the surface.
1385  *****************************************************************************/
1386 static void DirectXCloseSurface( vout_thread_t *p_vout,
1387                                  LPDIRECTDRAWSURFACE2 p_surface )
1388 {
1389     msg_Dbg( p_vout, "DirectXCloseSurface" );
1390     if( p_surface != NULL )
1391     {
1392         IDirectDrawSurface2_Release( p_surface );
1393     }
1394 }
1395
1396 /*****************************************************************************
1397  * NewPictureVec: allocate a vector of identical pictures
1398  *****************************************************************************
1399  * Returns 0 on success, -1 otherwise
1400  *****************************************************************************/
1401 static int NewPictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1402                           int i_num_pics )
1403 {
1404     int i;
1405     int i_ret = VLC_SUCCESS;
1406     LPDIRECTDRAWSURFACE2 p_surface;
1407
1408     msg_Dbg( p_vout, "NewPictureVec overlay:%s chroma:%.4s",
1409              p_vout->p_sys->b_using_overlay ? "yes" : "no",
1410              (char *)&p_vout->output.i_chroma );
1411
1412     I_OUTPUTPICTURES = 0;
1413
1414     /* First we try to use an YUV overlay surface.
1415      * The overlay surface that we create won't be used to decode directly
1416      * into it because accessing video memory directly is way to slow (remember
1417      * that pictures are decoded macroblock per macroblock). Instead the video
1418      * will be decoded in picture buffers in system memory which will then be
1419      * memcpy() to the overlay surface. */
1420     if( p_vout->p_sys->b_using_overlay )
1421     {
1422         /* Triple buffering rocks! it doesn't have any processing overhead
1423          * (you don't have to wait for the vsync) and provides for a very nice
1424          * video quality (no tearing). */
1425         if( p_vout->p_sys->b_3buf_overlay )
1426             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1427                                           p_vout->output.i_chroma,
1428                                           p_vout->p_sys->b_using_overlay,
1429                                           2 /* number of backbuffers */ );
1430
1431         if( !p_vout->p_sys->b_3buf_overlay || i_ret != VLC_SUCCESS )
1432         {
1433             /* Try to reduce the number of backbuffers */
1434             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1435                                           p_vout->output.i_chroma,
1436                                           p_vout->p_sys->b_using_overlay,
1437                                           0 /* number of backbuffers */ );
1438         }
1439
1440         if( i_ret == VLC_SUCCESS )
1441         {
1442             DDSCAPS dds_caps;
1443             picture_t front_pic;
1444             picture_sys_t front_pic_sys;
1445             front_pic.p_sys = &front_pic_sys;
1446
1447             /* Allocate internal structure */
1448             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1449             if( p_pic[0].p_sys == NULL )
1450             {
1451                 DirectXCloseSurface( p_vout, p_surface );
1452                 return VLC_ENOMEM;
1453             }
1454
1455             /* set front buffer */
1456             p_pic[0].p_sys->p_front_surface = p_surface;
1457
1458             /* Get the back buffer */
1459             memset( &dds_caps, 0, sizeof( DDSCAPS ) );
1460             dds_caps.dwCaps = DDSCAPS_BACKBUFFER;
1461             if( DD_OK != IDirectDrawSurface2_GetAttachedSurface(
1462                                                 p_surface, &dds_caps,
1463                                                 &p_pic[0].p_sys->p_surface ) )
1464             {
1465                 msg_Warn( p_vout, "NewPictureVec could not get back buffer" );
1466                 /* front buffer is the same as back buffer */
1467                 p_pic[0].p_sys->p_surface = p_surface;
1468             }
1469
1470
1471             p_vout->p_sys->p_current_surface = front_pic.p_sys->p_surface =
1472                 p_pic[0].p_sys->p_front_surface;
1473
1474             /* Reset the front buffer memory */
1475             if( DirectXLockSurface( p_vout, &front_pic ) == VLC_SUCCESS )
1476             {
1477                 int i,j;
1478                 for( i = 0; i < front_pic.i_planes; i++ )
1479                     for( j = 0; j < front_pic.p[i].i_visible_lines; j++)
1480                         memset( front_pic.p[i].p_pixels + j *
1481                                 front_pic.p[i].i_pitch, 127,
1482                                 front_pic.p[i].i_visible_pitch );
1483
1484                 DirectXUnlockSurface( p_vout, &front_pic );
1485             }
1486
1487             DirectDrawUpdateOverlay( p_vout );
1488             I_OUTPUTPICTURES = 1;
1489             msg_Dbg( p_vout, "YUV overlay created successfully" );
1490         }
1491     }
1492
1493     /* As we can't have an overlay, we'll try to create a plain offscreen
1494      * surface. This surface will reside in video memory because there's a
1495      * better chance then that we'll be able to use some kind of hardware
1496      * acceleration like rescaling, blitting or YUV->RGB conversions.
1497      * We then only need to blit this surface onto the main display when we
1498      * want to display it */
1499     if( !p_vout->p_sys->b_using_overlay )
1500     {
1501         if( p_vout->p_sys->b_hw_yuv )
1502         {
1503             DWORD i_codes;
1504             DWORD *pi_codes;
1505             bool b_result = false;
1506
1507             /* Check if the chroma is supported first. This is required
1508              * because a few buggy drivers don't mind creating the surface
1509              * even if they don't know about the chroma. */
1510             if( IDirectDraw2_GetFourCCCodes( p_vout->p_sys->p_ddobject,
1511                                              &i_codes, NULL ) == DD_OK )
1512             {
1513                 pi_codes = malloc( i_codes * sizeof(DWORD) );
1514                 if( pi_codes && IDirectDraw2_GetFourCCCodes(
1515                     p_vout->p_sys->p_ddobject, &i_codes, pi_codes ) == DD_OK )
1516                 {
1517                     for( i = 0; i < (int)i_codes; i++ )
1518                     {
1519                         if( p_vout->output.i_chroma == pi_codes[i] )
1520                         {
1521                             b_result = true;
1522                             break;
1523                         }
1524                     }
1525                 }
1526             }
1527
1528             if( b_result )
1529                 i_ret = DirectXCreateSurface( p_vout, &p_surface,
1530                                               p_vout->output.i_chroma,
1531                                               0 /* no overlay */,
1532                                               0 /* no back buffers */ );
1533             else
1534                 p_vout->p_sys->b_hw_yuv = false;
1535         }
1536
1537         if( i_ret || !p_vout->p_sys->b_hw_yuv )
1538         {
1539             /* Our last choice is to use a plain RGB surface */
1540             DDPIXELFORMAT ddpfPixelFormat;
1541
1542             ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1543             IDirectDrawSurface2_GetPixelFormat( p_vout->p_sys->p_display,
1544                                                 &ddpfPixelFormat );
1545
1546             if( ddpfPixelFormat.dwFlags & DDPF_RGB )
1547             {
1548                 switch( ddpfPixelFormat.dwRGBBitCount )
1549                 {
1550                 case 8:
1551                     p_vout->output.i_chroma = VLC_CODEC_RGB8;
1552                     p_vout->output.pf_setpalette = SetPalette;
1553                     break;
1554                 case 15:
1555                     p_vout->output.i_chroma = VLC_CODEC_RGB15;
1556                     break;
1557                 case 16:
1558                     p_vout->output.i_chroma = VLC_CODEC_RGB16;
1559                     break;
1560                 case 24:
1561                     p_vout->output.i_chroma = VLC_CODEC_RGB24;
1562                     break;
1563                 case 32:
1564                     p_vout->output.i_chroma = VLC_CODEC_RGB32;
1565                     break;
1566                 default:
1567                     msg_Err( p_vout, "unknown screen depth" );
1568                     return VLC_EGENERIC;
1569                 }
1570                 p_vout->output.i_rmask = ddpfPixelFormat.dwRBitMask;
1571                 p_vout->output.i_gmask = ddpfPixelFormat.dwGBitMask;
1572                 p_vout->output.i_bmask = ddpfPixelFormat.dwBBitMask;
1573             }
1574
1575             p_vout->p_sys->b_hw_yuv = 0;
1576
1577             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1578                                           p_vout->output.i_chroma,
1579                                           0 /* no overlay */,
1580                                           0 /* no back buffers */ );
1581
1582             if( i_ret && !p_vout->p_sys->b_use_sysmem )
1583             {
1584                 /* Give it a last try with b_use_sysmem enabled */
1585                 p_vout->p_sys->b_use_sysmem = 1;
1586
1587                 i_ret = DirectXCreateSurface( p_vout, &p_surface,
1588                                               p_vout->output.i_chroma,
1589                                               0 /* no overlay */,
1590                                               0 /* no back buffers */ );
1591             }
1592         }
1593
1594         if( i_ret == VLC_SUCCESS )
1595         {
1596             /* Allocate internal structure */
1597             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1598             if( p_pic[0].p_sys == NULL )
1599             {
1600                 DirectXCloseSurface( p_vout, p_surface );
1601                 return VLC_ENOMEM;
1602             }
1603
1604             p_pic[0].p_sys->p_surface = p_pic[0].p_sys->p_front_surface
1605                 = p_surface;
1606
1607             I_OUTPUTPICTURES = 1;
1608
1609             msg_Dbg( p_vout, "created plain surface of chroma:%.4s",
1610                      (char *)&p_vout->output.i_chroma );
1611         }
1612     }
1613
1614
1615     /* Now that we've got all our direct-buffers, we can finish filling in the
1616      * picture_t structures */
1617     for( i = 0; i < I_OUTPUTPICTURES; i++ )
1618     {
1619         p_pic[i].i_status = DESTROYED_PICTURE;
1620         p_pic[i].i_type   = DIRECT_PICTURE;
1621         p_pic[i].b_slow   = true;
1622         p_pic[i].pf_lock  = DirectXLockSurface;
1623         p_pic[i].pf_unlock = DirectXUnlockSurface;
1624         PP_OUTPUTPICTURE[i] = &p_pic[i];
1625
1626         if( DirectXLockSurface( p_vout, &p_pic[i] ) != VLC_SUCCESS )
1627         {
1628             /* AAARRGG */
1629             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1630             I_OUTPUTPICTURES = 0;
1631             msg_Err( p_vout, "cannot lock surface" );
1632             return VLC_EGENERIC;
1633         }
1634         DirectXUnlockSurface( p_vout, &p_pic[i] );
1635     }
1636
1637     msg_Dbg( p_vout, "End NewPictureVec (%s)",
1638              I_OUTPUTPICTURES ? "succeeded" : "failed" );
1639
1640     return VLC_SUCCESS;
1641 }
1642
1643 /*****************************************************************************
1644  * FreePicture: destroy a picture vector allocated with NewPictureVec
1645  *****************************************************************************
1646  *
1647  *****************************************************************************/
1648 static void FreePictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1649                             int i_num_pics )
1650 {
1651     int i;
1652
1653     vlc_mutex_lock( &p_vout->p_sys->lock );
1654     p_vout->p_sys->p_current_surface = 0;
1655     vlc_mutex_unlock( &p_vout->p_sys->lock );
1656
1657     for( i = 0; i < i_num_pics; i++ )
1658     {
1659         DirectXCloseSurface( p_vout, p_pic[i].p_sys->p_front_surface );
1660
1661         for( i = 0; i < i_num_pics; i++ )
1662         {
1663             free( p_pic[i].p_sys );
1664         }
1665     }
1666 }
1667
1668 /*****************************************************************************
1669  * UpdatePictureStruct: updates the internal data in the picture_t structure
1670  *****************************************************************************
1671  * This will setup stuff for use by the video_output thread
1672  *****************************************************************************/
1673 static int UpdatePictureStruct( vout_thread_t *p_vout, picture_t *p_pic,
1674                                 int i_chroma )
1675 {
1676     switch( p_vout->output.i_chroma )
1677     {
1678         case VLC_CODEC_RGB8:
1679         case VLC_CODEC_RGB15:
1680         case VLC_CODEC_RGB16:
1681         case VLC_CODEC_RGB24:
1682         case VLC_CODEC_RGB32:
1683             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1684             p_pic->p->i_lines = p_vout->output.i_height;
1685             p_pic->p->i_visible_lines = p_vout->output.i_height;
1686             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1687             switch( p_vout->output.i_chroma )
1688             {
1689                 case VLC_CODEC_RGB8:
1690                     p_pic->p->i_pixel_pitch = 1;
1691                     break;
1692                 case VLC_CODEC_RGB15:
1693                 case VLC_CODEC_RGB16:
1694                     p_pic->p->i_pixel_pitch = 2;
1695                     break;
1696                 case VLC_CODEC_RGB24:
1697                     p_pic->p->i_pixel_pitch = 3;
1698                     break;
1699                 case VLC_CODEC_RGB32:
1700                     p_pic->p->i_pixel_pitch = 4;
1701                     break;
1702                 default:
1703                     return VLC_EGENERIC;
1704             }
1705             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1706               p_pic->p->i_pixel_pitch;
1707             p_pic->i_planes = 1;
1708             break;
1709
1710         case VLC_CODEC_YV12:
1711
1712             /* U and V inverted compared to I420
1713              * Fixme: this should be handled by the vout core */
1714             p_vout->output.i_chroma = VLC_CODEC_I420;
1715
1716             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1717             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1718             p_pic->p[Y_PLANE].i_visible_lines = p_vout->output.i_height;
1719             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1720             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1721             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1722               p_pic->p[Y_PLANE].i_pixel_pitch;
1723
1724             p_pic->V_PIXELS =  p_pic->Y_PIXELS
1725               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1726             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1727             p_pic->p[V_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1728             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1729             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1730             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1731               p_pic->p[V_PLANE].i_pixel_pitch;
1732
1733             p_pic->U_PIXELS = p_pic->V_PIXELS
1734               + p_pic->p[V_PLANE].i_lines * p_pic->p[V_PLANE].i_pitch;
1735             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1736             p_pic->p[U_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1737             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1738             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1739             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1740               p_pic->p[U_PLANE].i_pixel_pitch;
1741
1742             p_pic->i_planes = 3;
1743             break;
1744
1745         case VLC_CODEC_I420:
1746
1747             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1748             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1749             p_pic->p[Y_PLANE].i_visible_lines = p_vout->output.i_height;
1750             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1751             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1752             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1753               p_pic->p[Y_PLANE].i_pixel_pitch;
1754
1755             p_pic->U_PIXELS = p_pic->Y_PIXELS
1756               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1757             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1758             p_pic->p[U_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1759             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1760             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1761             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1762               p_pic->p[U_PLANE].i_pixel_pitch;
1763
1764             p_pic->V_PIXELS =  p_pic->U_PIXELS
1765               + p_pic->p[U_PLANE].i_lines * p_pic->p[U_PLANE].i_pitch;
1766             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1767             p_pic->p[V_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1768             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1769             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1770             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1771               p_pic->p[V_PLANE].i_pixel_pitch;
1772
1773             p_pic->i_planes = 3;
1774             break;
1775
1776         case VLC_CODEC_UYVY:
1777         case VLC_CODEC_YUYV:
1778
1779             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1780             p_pic->p->i_lines = p_vout->output.i_height;
1781             p_pic->p->i_visible_lines = p_vout->output.i_height;
1782             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1783             p_pic->p->i_pixel_pitch = 2;
1784             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1785               p_pic->p->i_pixel_pitch;
1786
1787             p_pic->i_planes = 1;
1788             break;
1789
1790         default:
1791             /* Unknown chroma, tell the guy to get lost */
1792             msg_Err( p_vout, "never heard of chroma 0x%.8x (%4.4s)",
1793                      p_vout->output.i_chroma,
1794                      (char*)&p_vout->output.i_chroma );
1795             return VLC_EGENERIC;
1796     }
1797
1798     return VLC_SUCCESS;
1799 }
1800
1801 /*****************************************************************************
1802  * DirectXGetDDrawCaps: Probe the capabilities of the hardware
1803  *****************************************************************************
1804  * It is nice to know which features are supported by the hardware so we can
1805  * find ways to optimize our rendering.
1806  *****************************************************************************/
1807 static void DirectXGetDDrawCaps( vout_thread_t *p_vout )
1808 {
1809     DDCAPS ddcaps;
1810     HRESULT dxresult;
1811
1812     /* This is just an indication of whether or not we'll support overlay,
1813      * but with this test we don't know if we support YUV overlay */
1814     memset( &ddcaps, 0, sizeof( DDCAPS ));
1815     ddcaps.dwSize = sizeof(DDCAPS);
1816     dxresult = IDirectDraw2_GetCaps( p_vout->p_sys->p_ddobject,
1817                                      &ddcaps, NULL );
1818     if(dxresult != DD_OK )
1819     {
1820         msg_Warn( p_vout, "cannot get caps" );
1821     }
1822     else
1823     {
1824         bool bHasOverlay, bHasOverlayFourCC, bCanDeinterlace,
1825              bHasColorKey, bCanStretch, bCanBltFourcc,
1826              bAlignBoundarySrc, bAlignBoundaryDest,
1827              bAlignSizeSrc, bAlignSizeDest;
1828
1829         /* Determine if the hardware supports overlay surfaces */
1830         bHasOverlay = (ddcaps.dwCaps & DDCAPS_OVERLAY) ? 1 : 0;
1831         /* Determine if the hardware supports overlay surfaces */
1832         bHasOverlayFourCC = (ddcaps.dwCaps & DDCAPS_OVERLAYFOURCC) ? 1 : 0;
1833         /* Determine if the hardware supports overlay deinterlacing */
1834         bCanDeinterlace = (ddcaps.dwCaps & DDCAPS2_CANFLIPODDEVEN) ? 1 : 0;
1835         /* Determine if the hardware supports colorkeying */
1836         bHasColorKey = (ddcaps.dwCaps & DDCAPS_COLORKEY) ? 1 : 0;
1837         /* Determine if the hardware supports scaling of the overlay surface */
1838         bCanStretch = (ddcaps.dwCaps & DDCAPS_OVERLAYSTRETCH) ? 1 : 0;
1839         /* Determine if the hardware supports color conversion during a blit */
1840         bCanBltFourcc = (ddcaps.dwCaps & DDCAPS_BLTFOURCC) ? 1 : 0;
1841         /* Determine overlay source boundary alignment */
1842         bAlignBoundarySrc = (ddcaps.dwCaps & DDCAPS_ALIGNBOUNDARYSRC) ? 1 : 0;
1843         /* Determine overlay destination boundary alignment */
1844         bAlignBoundaryDest = (ddcaps.dwCaps & DDCAPS_ALIGNBOUNDARYDEST) ? 1:0;
1845         /* Determine overlay destination size alignment */
1846         bAlignSizeSrc = (ddcaps.dwCaps & DDCAPS_ALIGNSIZESRC) ? 1 : 0;
1847         /* Determine overlay destination size alignment */
1848         bAlignSizeDest = (ddcaps.dwCaps & DDCAPS_ALIGNSIZEDEST) ? 1 : 0;
1849
1850         msg_Dbg( p_vout, "DirectDraw Capabilities: overlay=%i yuvoverlay=%i "
1851                          "can_deinterlace_overlay=%i colorkey=%i stretch=%i "
1852                          "bltfourcc=%i",
1853                          bHasOverlay, bHasOverlayFourCC, bCanDeinterlace,
1854                          bHasColorKey, bCanStretch, bCanBltFourcc );
1855
1856         if( bAlignBoundarySrc || bAlignBoundaryDest ||
1857             bAlignSizeSrc || bAlignSizeDest )
1858         {
1859             if( bAlignBoundarySrc ) p_vout->p_sys->i_align_src_boundary =
1860                 ddcaps.dwAlignBoundarySrc;
1861             if( bAlignBoundaryDest ) p_vout->p_sys->i_align_dest_boundary =
1862                 ddcaps.dwAlignBoundaryDest;
1863             if( bAlignSizeDest ) p_vout->p_sys->i_align_src_size =
1864                 ddcaps.dwAlignSizeSrc;
1865             if( bAlignSizeDest ) p_vout->p_sys->i_align_dest_size =
1866                 ddcaps.dwAlignSizeDest;
1867
1868             msg_Dbg( p_vout, "align_boundary_src=%i,%i "
1869                      "align_boundary_dest=%i,%i "
1870                      "align_size_src=%i,%i align_size_dest=%i,%i",
1871                      bAlignBoundarySrc, p_vout->p_sys->i_align_src_boundary,
1872                      bAlignBoundaryDest, p_vout->p_sys->i_align_dest_boundary,
1873                      bAlignSizeSrc, p_vout->p_sys->i_align_src_size,
1874                      bAlignSizeDest, p_vout->p_sys->i_align_dest_size );
1875         }
1876
1877         /* Don't ask for troubles */
1878         if( !bCanBltFourcc ) p_vout->p_sys->b_hw_yuv = FALSE;
1879     }
1880 }
1881
1882 /*****************************************************************************
1883  * DirectXLockSurface: Lock surface and get picture data pointer
1884  *****************************************************************************
1885  * This function locks a surface and get the surface descriptor which amongst
1886  * other things has the pointer to the picture data.
1887  *****************************************************************************/
1888 static int DirectXLockSurface( vout_thread_t *p_vout, picture_t *p_pic )
1889 {
1890     HRESULT dxresult;
1891
1892     /* Lock the surface to get a valid pointer to the picture buffer */
1893     memset( &p_pic->p_sys->ddsd, 0, sizeof( DDSURFACEDESC ));
1894     p_pic->p_sys->ddsd.dwSize = sizeof(DDSURFACEDESC);
1895     dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface,
1896                                          NULL, &p_pic->p_sys->ddsd,
1897                                          DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1898                                          NULL );
1899     if( dxresult != DD_OK )
1900     {
1901         if( dxresult == DDERR_INVALIDPARAMS )
1902         {
1903             /* DirectX 3 doesn't support the DDLOCK_NOSYSLOCK flag, resulting
1904              * in an invalid params error */
1905             dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1906                                              &p_pic->p_sys->ddsd,
1907                                              DDLOCK_WAIT, NULL);
1908         }
1909         if( dxresult == DDERR_SURFACELOST )
1910         {
1911             /* Your surface can be lost so be sure
1912              * to check this and restore it if needed */
1913
1914             /* When using overlays with back-buffers, we need to restore
1915              * the front buffer so the back-buffers get restored as well. */
1916             if( p_vout->p_sys->b_using_overlay  )
1917                 IDirectDrawSurface2_Restore( p_pic->p_sys->p_front_surface );
1918             else
1919                 IDirectDrawSurface2_Restore( p_pic->p_sys->p_surface );
1920
1921             dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1922                                                  &p_pic->p_sys->ddsd,
1923                                                  DDLOCK_WAIT, NULL);
1924 #if 0
1925             if( dxresult == DDERR_SURFACELOST )
1926                 msg_Dbg( p_vout, "DirectXLockSurface: DDERR_SURFACELOST" );
1927 #endif
1928         }
1929         if( dxresult != DD_OK )
1930         {
1931             return VLC_EGENERIC;
1932         }
1933     }
1934
1935     /* Now we have a pointer to the surface memory, we can update our picture
1936      * structure. */
1937     if( UpdatePictureStruct( p_vout, p_pic, p_vout->output.i_chroma )
1938         != VLC_SUCCESS )
1939     {
1940         DirectXUnlockSurface( p_vout, p_pic );
1941         return VLC_EGENERIC;
1942     }
1943     else
1944         return VLC_SUCCESS;
1945 }
1946
1947 /*****************************************************************************
1948  * DirectXUnlockSurface: Unlock a surface locked by DirectXLockSurface().
1949  *****************************************************************************/
1950 static int DirectXUnlockSurface( vout_thread_t *p_vout, picture_t *p_pic )
1951 {
1952     /* Unlock the Surface */
1953     if( IDirectDrawSurface2_Unlock( p_pic->p_sys->p_surface, NULL ) == DD_OK )
1954         return VLC_SUCCESS;
1955     else
1956         return VLC_EGENERIC;
1957 }
1958
1959 /*****************************************************************************
1960  * DirectXFindColorkey: Finds out the 32bits RGB pixel value of the colorkey
1961  *****************************************************************************/
1962 static DWORD DirectXFindColorkey( vout_thread_t *p_vout, uint32_t *pi_color )
1963 {
1964     DDSURFACEDESC ddsd;
1965     HRESULT dxresult;
1966     COLORREF i_rgb = 0;
1967     uint32_t i_pixel_backup;
1968     HDC hdc;
1969
1970     ddsd.dwSize = sizeof(ddsd);
1971     dxresult = IDirectDrawSurface2_Lock( p_vout->p_sys->p_display, NULL,
1972                                          &ddsd, DDLOCK_WAIT, NULL );
1973     if( dxresult != DD_OK ) return 0;
1974
1975     i_pixel_backup = *(uint32_t *)ddsd.lpSurface;
1976
1977     switch( ddsd.ddpfPixelFormat.dwRGBBitCount )
1978     {
1979     case 4:
1980         *(uint8_t *)ddsd.lpSurface = *pi_color | (*pi_color << 4);
1981         break;
1982     case 8:
1983         *(uint8_t *)ddsd.lpSurface = *pi_color;
1984         break;
1985     case 15:
1986     case 16:
1987         *(uint16_t *)ddsd.lpSurface = *pi_color;
1988         break;
1989     case 24:
1990         /* Seems to be problematic so we'll just put black as the colorkey */
1991         *pi_color = 0;
1992     default:
1993         *(uint32_t *)ddsd.lpSurface = *pi_color;
1994         break;
1995     }
1996
1997     IDirectDrawSurface2_Unlock( p_vout->p_sys->p_display, NULL );
1998
1999     if( IDirectDrawSurface2_GetDC( p_vout->p_sys->p_display, &hdc ) == DD_OK )
2000     {
2001         i_rgb = GetPixel( hdc, 0, 0 );
2002         IDirectDrawSurface2_ReleaseDC( p_vout->p_sys->p_display, hdc );
2003     }
2004
2005     ddsd.dwSize = sizeof(ddsd);
2006     dxresult = IDirectDrawSurface2_Lock( p_vout->p_sys->p_display, NULL,
2007                                          &ddsd, DDLOCK_WAIT, NULL );
2008     if( dxresult != DD_OK ) return i_rgb;
2009
2010     *(uint32_t *)ddsd.lpSurface = i_pixel_backup;
2011
2012     IDirectDrawSurface2_Unlock( p_vout->p_sys->p_display, NULL );
2013
2014     return i_rgb;
2015 }
2016
2017 /*****************************************************************************
2018  * A few toolbox functions
2019  *****************************************************************************/
2020 void SwitchWallpaperMode( vout_thread_t *p_vout, bool b_on )
2021 {
2022     HWND hwnd;
2023
2024     if( p_vout->p_sys->b_wallpaper == b_on ) return; /* Nothing to do */
2025
2026     hwnd = FindWindow( _T("Progman"), NULL );
2027     if( hwnd ) hwnd = FindWindowEx( hwnd, NULL, _T("SHELLDLL_DefView"), NULL );
2028     if( hwnd ) hwnd = FindWindowEx( hwnd, NULL, _T("SysListView32"), NULL );
2029     if( !hwnd )
2030     {
2031         msg_Warn( p_vout, "couldn't find \"SysListView32\" window, "
2032                   "wallpaper mode not supported" );
2033         return;
2034     }
2035
2036     p_vout->p_sys->b_wallpaper = b_on;
2037
2038     msg_Dbg( p_vout, "wallpaper mode %s", b_on ? "enabled" : "disabled" );
2039
2040     if( p_vout->p_sys->b_wallpaper )
2041     {
2042         p_vout->p_sys->color_bkg = ListView_GetBkColor( hwnd );
2043         p_vout->p_sys->color_bkgtxt = ListView_GetTextBkColor( hwnd );
2044
2045         ListView_SetBkColor( hwnd, p_vout->p_sys->i_rgb_colorkey );
2046         ListView_SetTextBkColor( hwnd, p_vout->p_sys->i_rgb_colorkey );
2047     }
2048     else if( hwnd )
2049     {
2050         ListView_SetBkColor( hwnd, p_vout->p_sys->color_bkg );
2051         ListView_SetTextBkColor( hwnd, p_vout->p_sys->color_bkgtxt );
2052     }
2053
2054     /* Update desktop */
2055     InvalidateRect( hwnd, NULL, TRUE );
2056     UpdateWindow( hwnd );
2057 }
2058
2059 /*****************************************************************************
2060  * config variable callback
2061  *****************************************************************************/
2062 BOOL WINAPI DirectXEnumCallback2( GUID* p_guid, LPTSTR psz_desc,
2063                                   LPTSTR psz_drivername, VOID* p_context,
2064                                   HMONITOR hmon )
2065 {
2066     module_config_t *p_item = (module_config_t *)p_context;
2067
2068     p_item->ppsz_list =
2069         (char **)realloc( p_item->ppsz_list,
2070                           (p_item->i_list+2) * sizeof(char *) );
2071     p_item->ppsz_list_text =
2072         (char **)realloc( p_item->ppsz_list_text,
2073                           (p_item->i_list+2) * sizeof(char *) );
2074
2075     p_item->ppsz_list[p_item->i_list] = strdup( psz_drivername );
2076     p_item->ppsz_list_text[p_item->i_list] = NULL;
2077     p_item->i_list++;
2078     p_item->ppsz_list[p_item->i_list] = NULL;
2079     p_item->ppsz_list_text[p_item->i_list] = NULL;
2080
2081     return TRUE; /* Keep enumerating */
2082 }
2083
2084 static int FindDevicesCallback( vlc_object_t *p_this, char const *psz_name,
2085                                vlc_value_t newval, vlc_value_t oldval, void *d)
2086 {
2087     HRESULT (WINAPI *OurDirectDrawEnumerateEx)( LPDDENUMCALLBACKEXA, LPVOID,
2088                                                 DWORD );
2089     HINSTANCE hddraw_dll;
2090
2091     module_config_t *p_item;
2092     int i;
2093
2094     p_item = config_FindConfig( p_this, psz_name );
2095     if( !p_item ) return VLC_SUCCESS;
2096
2097     /* Clear-up the current list */
2098     if( p_item->i_list )
2099     {
2100         /* Keep the first entry */
2101         for( i = 1; i < p_item->i_list; i++ )
2102         {
2103             free( p_item->ppsz_list[i] );
2104             free( p_item->ppsz_list_text[i] );
2105         }
2106         /* TODO: Remove when no more needed */
2107         p_item->ppsz_list[i] = NULL;
2108         p_item->ppsz_list_text[i] = NULL;
2109     }
2110     p_item->i_list = 1;
2111
2112     /* Load direct draw DLL */
2113     hddraw_dll = LoadLibrary(_T("DDRAW.DLL"));
2114     if( hddraw_dll == NULL ) return VLC_SUCCESS;
2115
2116     OurDirectDrawEnumerateEx =
2117 #ifndef UNICODE
2118       (void *)GetProcAddress( hddraw_dll, "DirectDrawEnumerateExA" );
2119 #else
2120       (void *)GetProcAddress( hddraw_dll, _T("DirectDrawEnumerateExW") );
2121 #endif
2122
2123     if( OurDirectDrawEnumerateEx )
2124     {
2125         /* Enumerate displays */
2126         OurDirectDrawEnumerateEx( DirectXEnumCallback2, p_item,
2127                                   DDENUM_ATTACHEDSECONDARYDEVICES );
2128     }
2129
2130     FreeLibrary( hddraw_dll );
2131
2132     /* Signal change to the interface */
2133     p_item->b_dirty = true;
2134
2135     return VLC_SUCCESS;
2136 }
2137
2138 static int WallpaperCallback( vlc_object_t *p_this, char const *psz_cmd,
2139                               vlc_value_t oldval, vlc_value_t newval,
2140                               void *p_data )
2141 {
2142     vout_thread_t *p_vout = (vout_thread_t *)p_this;
2143
2144     if( (newval.b_bool && !p_vout->p_sys->b_wallpaper) ||
2145         (!newval.b_bool && p_vout->p_sys->b_wallpaper) )
2146     {
2147         playlist_t *p_playlist = pl_Hold( p_vout );
2148
2149         if( p_playlist )
2150         {
2151             /* Modify playlist as well because the vout might have to be
2152              * restarted */
2153             var_Create( p_playlist, "directx-wallpaper", VLC_VAR_BOOL );
2154             var_Set( p_playlist, "directx-wallpaper", newval );
2155             pl_Release( p_vout );
2156         }
2157
2158         p_vout->p_sys->i_changes |= DX_WALLPAPER_CHANGE;
2159     }
2160
2161     return VLC_SUCCESS;
2162 }
2163
2164 /*****************************************************************************
2165  * SetPalette: sets an 8 bpp palette
2166  *****************************************************************************/
2167 static void SetPalette( vout_thread_t *p_vout,
2168                         uint16_t *red, uint16_t *green, uint16_t *blue )
2169 {
2170     msg_Err( p_vout, "FIXME: SetPalette unimplemented" );
2171 }