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

   1 /*****************************************************************************
   2  * vout.c: Windows DirectX video output display method
   3  *****************************************************************************
   4  * Copyright (C) 2001-2004 VideoLAN
   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., 59 Temple Place - Suite 330, Boston, MA  02111, 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 #include <stdlib.h>                                                /* free() */
  39 #include <string.h>                                            /* strerror() */
  40
  41 #include <vlc/vlc.h>
  42 #include <vlc/intf.h>
  43 #include <vlc/vout.h>
  44
  45 #include <windows.h>
  46 #include <ddraw.h>
  47 #include <commctrl.h>
  48
  49 #include <multimon.h>
  50 #undef GetSystemMetrics
  51
  52 #ifndef MONITOR_DEFAULTTONEAREST
  53 #   define MONITOR_DEFAULTTONEAREST 2
  54 #endif
  55
  56 #include "vout.h"
  57
  58 /*****************************************************************************
  59  * DirectDraw GUIDs.
  60  * Defining them here allows us to get rid of the dxguid library during
  61  * the linking stage.
  62  *****************************************************************************/
  63 #include <initguid.h>
  64 DEFINE_GUID( IID_IDirectDraw2, 0xB3A6F3E0,0x2B43,0x11CF,0xA2,0xDE,0x00,0xAA,0x00,0xB9,0x33,0x56 );
  65 DEFINE_GUID( IID_IDirectDrawSurface2, 0x57805885,0x6eec,0x11cf,0x94,0x41,0xa8,0x23,0x03,0xc1,0x0e,0x27 );
  66
  67 /*****************************************************************************
  68  * Local prototypes.
  69  *****************************************************************************/
  70 static int  OpenVideo  ( vlc_object_t * );
  71 static void CloseVideo ( vlc_object_t * );
  72
  73 static int  Init      ( vout_thread_t * );
  74 static void End       ( vout_thread_t * );
  75 static int  Manage    ( vout_thread_t * );
  76 static void Display   ( vout_thread_t *, picture_t * );
  77
  78 static int  NewPictureVec  ( vout_thread_t *, picture_t *, int );
  79 static void FreePictureVec ( vout_thread_t *, picture_t *, int );
  80 static int  UpdatePictureStruct( vout_thread_t *, picture_t *, int );
  81
  82 static int  DirectXInitDDraw      ( vout_thread_t *p_vout );
  83 static void DirectXCloseDDraw     ( vout_thread_t *p_vout );
  84 static int  DirectXCreateDisplay  ( vout_thread_t *p_vout );
  85 static void DirectXCloseDisplay   ( vout_thread_t *p_vout );
  86 static int  DirectXCreateSurface  ( vout_thread_t *p_vout,
  87                                     LPDIRECTDRAWSURFACE2 *, int, int, int );
  88 static void DirectXCloseSurface   ( vout_thread_t *p_vout,
  89                                     LPDIRECTDRAWSURFACE2 );
  90 static int  DirectXCreateClipper  ( vout_thread_t *p_vout );
  91 static void DirectXGetDDrawCaps   ( vout_thread_t *p_vout );
  92 static int  DirectXLockSurface    ( vout_thread_t *p_vout, picture_t *p_pic );
  93 static int  DirectXUnlockSurface  ( vout_thread_t *p_vout, picture_t *p_pic );
  94
  95 static DWORD DirectXFindColorkey( vout_thread_t *p_vout, uint32_t i_color );
  96
  97 void SwitchWallpaperMode( vout_thread_t *, vlc_bool_t );
  98
  99 /* Object variables callbacks */
 100 static int FindDevicesCallback( vlc_object_t *, char const *,
 101                                 vlc_value_t, vlc_value_t, void * );
 102 static int WallpaperCallback( vlc_object_t *, char const *,
 103                               vlc_value_t, vlc_value_t, void * );
 104
 105 /*****************************************************************************
 106  * Module descriptor
 107  *****************************************************************************/
 108 #define HW_YUV_TEXT N_("Use hardware YUV->RGB conversions")
 109 #define HW_YUV_LONGTEXT N_( \
 110     "Try to use hardware acceleration for YUV->RGB conversions. " \
 111     "This option doesn't have any effect when using overlays." )
 112
 113 #define SYSMEM_TEXT N_("Use video buffers in system memory")
 114 #define SYSMEM_LONGTEXT N_( \
 115     "Create video buffers in system memory instead of video memory. This " \
 116     "isn't recommended as usually using video memory allows to benefit from " \
 117     "more hardware acceleration (like rescaling or YUV->RGB conversions). " \
 118     "This option doesn't have any effect when using overlays." )
 119
 120 #define TRIPLEBUF_TEXT N_("Use triple buffering for overlays")
 121 #define TRIPLEBUF_LONGTEXT N_( \
 122     "Try to use triple buffering when using YUV overlays. That results in " \
 123     "much better video quality (no flickering)." )
 124
 125 #define DEVICE_TEXT N_("Name of desired display device")
 126 #define DEVICE_LONGTEXT N_("In a multiple monitor configuration, you can " \
 127     "specify the Windows device name of the display that you want the video " \
 128     "window to open on. For example, \"\\\\.\\DISPLAY1\" or " \
 129     "\"\\\\.\\DISPLAY2\"." )
 130
 131 #define WALLPAPER_TEXT N_("Enable wallpaper mode ")
 132 #define WALLPAPER_LONGTEXT N_( \
 133     "The wallpaper mode allows you to display the video as the desktop " \
 134     "background. Note that this feature only works in overlay mode and " \
 135     "the desktop must not already have a wallpaper." )
 136
 137 static char *ppsz_dev[] = { "" };
 138 static char *ppsz_dev_text[] = { N_("Default") };
 139
 140 vlc_module_begin();
 141     add_bool( "directx-hw-yuv", 1, NULL, HW_YUV_TEXT, HW_YUV_LONGTEXT,
 142               VLC_TRUE );
 143     add_bool( "directx-use-sysmem", 0, NULL, SYSMEM_TEXT, SYSMEM_LONGTEXT,
 144               VLC_TRUE );
 145     add_bool( "directx-3buffering", 1, NULL, TRIPLEBUF_TEXT,
 146               TRIPLEBUF_LONGTEXT, VLC_TRUE );
 147
 148     add_string( "directx-device", "", NULL, DEVICE_TEXT, DEVICE_LONGTEXT,
 149                 VLC_TRUE );
 150         change_string_list( ppsz_dev, ppsz_dev_text, FindDevicesCallback );
 151         change_action_add( FindDevicesCallback, N_("Refresh list") );
 152
 153     add_bool( "directx-wallpaper", 0, NULL, WALLPAPER_TEXT, WALLPAPER_LONGTEXT,
 154               VLC_TRUE );
 155
 156     set_description( _("DirectX video output") );
 157     set_capability( "video output", 100 );
 158     add_shortcut( "directx" );
 159     set_callbacks( OpenVideo, CloseVideo );
 160 vlc_module_end();
 161
 162 #if 0 /* FIXME */
 163     /* check if we registered a window class because we need to
 164      * unregister it */
 165     WNDCLASS wndclass;
 166     if( GetClassInfo( GetModuleHandle(NULL), "VLC DirectX", &wndclass ) )
 167         UnregisterClass( "VLC DirectX", GetModuleHandle(NULL) );
 168 #endif
 169
 170 /*****************************************************************************
 171  * OpenVideo: allocate DirectX video thread output method
 172  *****************************************************************************
 173  * This function allocates and initialize the DirectX vout method.
 174  *****************************************************************************/
 175 static int OpenVideo( vlc_object_t *p_this )
 176 {
 177     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 178     vlc_value_t val;
 179     HMODULE huser32;
 180
 181     /* Allocate structure */
 182     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 183     if( p_vout->p_sys == NULL )
 184     {
 185         msg_Err( p_vout, "out of memory" );
 186         return VLC_ENOMEM;
 187     }
 188     memset( p_vout->p_sys, 0, sizeof( vout_sys_t ) );
 189
 190     /* Initialisations */
 191     p_vout->pf_init = Init;
 192     p_vout->pf_end = End;
 193     p_vout->pf_manage = Manage;
 194     p_vout->pf_render = NULL;
 195     p_vout->pf_display = Display;
 196
 197     p_vout->p_sys->p_ddobject = NULL;
 198     p_vout->p_sys->p_display = NULL;
 199     p_vout->p_sys->p_current_surface = NULL;
 200     p_vout->p_sys->p_clipper = NULL;
 201     p_vout->p_sys->hwnd = p_vout->p_sys->hvideownd = NULL;
 202     p_vout->p_sys->hparent = NULL;
 203     p_vout->p_sys->i_changes = 0;
 204     p_vout->p_sys->b_wallpaper = 0;
 205     vlc_mutex_init( p_vout, &p_vout->p_sys->lock );
 206     SetRectEmpty( &p_vout->p_sys->rect_display );
 207     SetRectEmpty( &p_vout->p_sys->rect_parent );
 208
 209     /* Multimonitor stuff */
 210     p_vout->p_sys->hmonitor = NULL;
 211     p_vout->p_sys->p_display_driver = NULL;
 212     p_vout->p_sys->MonitorFromWindow = NULL;
 213     p_vout->p_sys->GetMonitorInfo = NULL;
 214     if( (huser32 = GetModuleHandle( "USER32" ) ) )
 215     {
 216         p_vout->p_sys->MonitorFromWindow =
 217             GetProcAddress( huser32, "MonitorFromWindow" );
 218         p_vout->p_sys->GetMonitorInfo =
 219             GetProcAddress( huser32, "GetMonitorInfoA" );
 220     }
 221
 222     var_Create( p_vout, "overlay", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 223     var_Create( p_vout, "directx-use-sysmem", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 224     var_Create( p_vout, "directx-hw-yuv", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 225     var_Create( p_vout, "directx-3buffering", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 226     var_Create( p_vout, "directx-device", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 227     var_Create( p_vout, "video-title", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 228
 229     p_vout->p_sys->b_cursor_hidden = 0;
 230     p_vout->p_sys->i_lastmoved = mdate();
 231
 232     /* Set main window's size */
 233     p_vout->p_sys->i_window_width = p_vout->i_window_width;
 234     p_vout->p_sys->i_window_height = p_vout->i_window_height;
 235
 236     /* Create the DirectXEventThread, this thread is created by us to isolate
 237      * the Win32 PeekMessage function calls. We want to do this because
 238      * Windows can stay blocked inside this call for a long time, and when
 239      * this happens it thus blocks vlc's video_output thread.
 240      * DirectXEventThread will take care of the creation of the video
 241      * window (because PeekMessage has to be called from the same thread which
 242      * created the window). */
 243     msg_Dbg( p_vout, "creating DirectXEventThread" );
 244     p_vout->p_sys->p_event =
 245         vlc_object_create( p_vout, sizeof(event_thread_t) );
 246     p_vout->p_sys->p_event->p_vout = p_vout;
 247     if( vlc_thread_create( p_vout->p_sys->p_event, "DirectX Events Thread",
 248                            DirectXEventThread, 0, 1 ) )
 249     {
 250         msg_Err( p_vout, "cannot create DirectXEventThread" );
 251         vlc_object_destroy( p_vout->p_sys->p_event );
 252         p_vout->p_sys->p_event = NULL;
 253         goto error;
 254     }
 255
 256     if( p_vout->p_sys->p_event->b_error )
 257     {
 258         msg_Err( p_vout, "DirectXEventThread failed" );
 259         goto error;
 260     }
 261
 262     vlc_object_attach( p_vout->p_sys->p_event, p_vout );
 263
 264     msg_Dbg( p_vout, "DirectXEventThread running" );
 265
 266     /* Initialise DirectDraw */
 267     if( DirectXInitDDraw( p_vout ) )
 268     {
 269         msg_Err( p_vout, "cannot initialize DirectDraw" );
 270         goto error;
 271     }
 272
 273     /* Create the directx display */
 274     if( DirectXCreateDisplay( p_vout ) )
 275     {
 276         msg_Err( p_vout, "cannot initialize DirectDraw" );
 277         goto error;
 278     }
 279
 280     /* Variable to indicate if the window should be on top of others */
 281     /* Trigger a callback right now */
 282     var_Get( p_vout, "video-on-top", &val );
 283     var_Set( p_vout, "video-on-top", val );
 284
 285     /* Variable to indicate if the window should be on top of others */
 286     /* Trigger a callback right now */
 287     var_Create( p_vout, "directx-wallpaper", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 288     val.psz_string = _("Wallpaper");
 289     var_Change( p_vout, "directx-wallpaper", VLC_VAR_SETTEXT, &val, NULL );
 290     var_AddCallback( p_vout, "directx-wallpaper", WallpaperCallback, NULL );
 291     var_Get( p_vout, "directx-wallpaper", &val );
 292     var_Set( p_vout, "directx-wallpaper", val );
 293
 294     return VLC_SUCCESS;
 295
 296  error:
 297     CloseVideo( VLC_OBJECT(p_vout) );
 298     return VLC_EGENERIC;
 299 }
 300
 301 /*****************************************************************************
 302  * Init: initialize DirectX video thread output method
 303  *****************************************************************************
 304  * This function create the directx surfaces needed by the output thread.
 305  * It is called at the beginning of the thread.
 306  *****************************************************************************/
 307 static int Init( vout_thread_t *p_vout )
 308 {
 309     int i_chroma_backup;
 310     vlc_value_t val;
 311
 312     /* Get a few default parameters */
 313     var_Get( p_vout, "overlay", &val );
 314     p_vout->p_sys->b_using_overlay = val.b_bool;
 315     var_Get( p_vout, "directx-use-sysmem", &val );
 316     p_vout->p_sys->b_use_sysmem = val.b_bool;
 317     var_Get( p_vout, "directx-hw-yuv", &val );
 318     p_vout->p_sys->b_hw_yuv = val.b_bool;
 319     var_Get( p_vout, "directx-3buffering", &val );
 320     p_vout->p_sys->b_3buf_overlay = val.b_bool;
 321
 322     /* Initialise DirectDraw if not already done.
 323      * We do this here because on multi-monitor systems we may have to
 324      * re-create the directdraw surfaces. */
 325     if( !p_vout->p_sys->p_ddobject &&
 326         DirectXInitDDraw( p_vout ) != VLC_SUCCESS )
 327     {
 328         msg_Err( p_vout, "cannot initialize DirectDraw" );
 329         return VLC_EGENERIC;
 330     }
 331
 332     /* Create the directx display */
 333     if( !p_vout->p_sys->p_display &&
 334         DirectXCreateDisplay( p_vout ) != VLC_SUCCESS )
 335     {
 336         msg_Err( p_vout, "cannot initialize DirectDraw" );
 337         return VLC_EGENERIC;
 338     }
 339
 340     /* Initialize the output structure.
 341      * Since DirectDraw can do rescaling for us, stick to the default
 342      * coordinates and aspect. */
 343     p_vout->output.i_width  = p_vout->render.i_width;
 344     p_vout->output.i_height = p_vout->render.i_height;
 345     p_vout->output.i_aspect = p_vout->render.i_aspect;
 346
 347 #define MAX_DIRECTBUFFERS 1
 348     /* Right now we use only 1 directbuffer because we don't want the
 349      * video decoder to decode directly into direct buffers as they are
 350      * created into video memory and video memory is _really_ slow */
 351
 352     /* Choose the chroma we will try first. */
 353     switch( p_vout->render.i_chroma )
 354     {
 355         case VLC_FOURCC('Y','U','Y','2'):
 356         case VLC_FOURCC('Y','U','N','V'):
 357             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 358             break;
 359         case VLC_FOURCC('U','Y','V','Y'):
 360         case VLC_FOURCC('U','Y','N','V'):
 361         case VLC_FOURCC('Y','4','2','2'):
 362             p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
 363             break;
 364         case VLC_FOURCC('Y','V','Y','U'):
 365             p_vout->output.i_chroma = VLC_FOURCC('Y','V','Y','U');
 366             break;
 367         default:
 368             p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 369             break;
 370     }
 371
 372     NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 373
 374     i_chroma_backup = p_vout->output.i_chroma;
 375
 376     if( !I_OUTPUTPICTURES )
 377     {
 378         /* hmmm, it didn't work! Let's try commonly supported chromas */
 379         if( p_vout->output.i_chroma != VLC_FOURCC('Y','V','1','2') )
 380         {
 381             p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 382             NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 383         }
 384         if( !I_OUTPUTPICTURES )
 385         {
 386             /* hmmm, it still didn't work! Let's try another one */
 387             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 388             NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 389         }
 390     }
 391
 392     if( !I_OUTPUTPICTURES )
 393     {
 394         /* If it still didn't work then don't try to use an overlay */
 395         p_vout->output.i_chroma = i_chroma_backup;
 396         p_vout->p_sys->b_using_overlay = 0;
 397         NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 398     }
 399
 400     /* Change the window title bar text */
 401     PostMessage( p_vout->p_sys->hwnd, WM_VLC_CHANGE_TEXT, 0, 0 );
 402
 403     return VLC_SUCCESS;
 404 }
 405
 406 /*****************************************************************************
 407  * End: terminate Sys video thread output method
 408  *****************************************************************************
 409  * Terminate an output method created by Create.
 410  * It is called at the end of the thread.
 411  *****************************************************************************/
 412 static void End( vout_thread_t *p_vout )
 413 {
 414     FreePictureVec( p_vout, p_vout->p_picture, I_OUTPUTPICTURES );
 415
 416     DirectXCloseDisplay( p_vout );
 417     DirectXCloseDDraw( p_vout );
 418
 419     return;
 420 }
 421
 422 /*****************************************************************************
 423  * CloseVideo: destroy Sys video thread output method
 424  *****************************************************************************
 425  * Terminate an output method created by Create
 426  *****************************************************************************/
 427 static void CloseVideo( vlc_object_t *p_this )
 428 {
 429     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 430
 431     msg_Dbg( p_vout, "CloseVideo" );
 432
 433     if( p_vout->p_sys->p_event )
 434     {
 435         vlc_object_detach( p_vout->p_sys->p_event );
 436
 437         /* Kill DirectXEventThread */
 438         p_vout->p_sys->p_event->b_die = VLC_TRUE;
 439
 440         /* we need to be sure DirectXEventThread won't stay stuck in
 441          * GetMessage, so we send a fake message */
 442         if( p_vout->p_sys->hwnd )
 443         {
 444             PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0);
 445         }
 446
 447         vlc_thread_join( p_vout->p_sys->p_event );
 448         vlc_object_destroy( p_vout->p_sys->p_event );
 449     }
 450
 451     vlc_mutex_destroy( &p_vout->p_sys->lock );
 452
 453     /* Make sure the wallpaper is restored */
 454     SwitchWallpaperMode( p_vout, VLC_FALSE );
 455
 456     if( p_vout->p_sys )
 457     {
 458         free( p_vout->p_sys );
 459         p_vout->p_sys = NULL;
 460     }
 461 }
 462
 463 /*****************************************************************************
 464  * Manage: handle Sys events
 465  *****************************************************************************
 466  * This function should be called regularly by the video output thread.
 467  * It returns a non null value if an error occurred.
 468  *****************************************************************************/
 469 static int Manage( vout_thread_t *p_vout )
 470 {
 471     WINDOWPLACEMENT window_placement;
 472
 473     /* If we do not control our window, we check for geometry changes
 474      * ourselves because the parent might not send us its events. */
 475     vlc_mutex_lock( &p_vout->p_sys->lock );
 476     if( p_vout->p_sys->hparent && !p_vout->b_fullscreen )
 477     {
 478         RECT rect_parent;
 479         POINT point;
 480
 481         vlc_mutex_unlock( &p_vout->p_sys->lock );
 482
 483         GetClientRect( p_vout->p_sys->hparent, &rect_parent );
 484         point.x = point.y = 0;
 485         ClientToScreen( p_vout->p_sys->hparent, &point );
 486         OffsetRect( &rect_parent, point.x, point.y );
 487
 488         if( !EqualRect( &rect_parent, &p_vout->p_sys->rect_parent ) )
 489         {
 490             p_vout->p_sys->rect_parent = rect_parent;
 491
 492             /* This one is to force the update even if only
 493              * the position has changed */
 494             SetWindowPos( p_vout->p_sys->hwnd, 0, 1, 1,
 495                           rect_parent.right - rect_parent.left,
 496                           rect_parent.bottom - rect_parent.top, 0 );
 497
 498             SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
 499                           rect_parent.right - rect_parent.left,
 500                           rect_parent.bottom - rect_parent.top, 0 );
 501         }
 502     }
 503     else
 504     {
 505         vlc_mutex_unlock( &p_vout->p_sys->lock );
 506     }
 507
 508     /*
 509      * Position Change
 510      */
 511     if( p_vout->p_sys->i_changes & DX_POSITION_CHANGE )
 512     {
 513         p_vout->p_sys->i_changes &= ~DX_POSITION_CHANGE;
 514
 515         /* Check if we are still on the same monitor */
 516         if( p_vout->p_sys->MonitorFromWindow &&
 517             p_vout->p_sys->hmonitor !=
 518                 p_vout->p_sys->MonitorFromWindow( p_vout->p_sys->hwnd,
 519                                                   MONITOR_DEFAULTTONEAREST ) )
 520         {
 521             /* This will force the vout core to recreate the picture buffers */
 522             p_vout->i_changes |= VOUT_PICTURE_BUFFERS_CHANGE;
 523         }
 524     }
 525
 526     /* We used to call the Win32 PeekMessage function here to read the window
 527      * messages. But since window can stay blocked into this function for a
 528      * long time (for example when you move your window on the screen), I
 529      * decided to isolate PeekMessage in another thread. */
 530
 531     if( p_vout->p_sys->i_changes & DX_WALLPAPER_CHANGE )
 532     {
 533         SwitchWallpaperMode( p_vout, !p_vout->p_sys->b_wallpaper );
 534         p_vout->p_sys->i_changes &= ~DX_WALLPAPER_CHANGE;
 535         DirectXUpdateOverlay( p_vout );
 536     }
 537
 538     /*
 539      * Fullscreen change
 540      */
 541     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
 542         || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
 543     {
 544         int i_style = 0;
 545         vlc_value_t val;
 546
 547         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 548
 549         /* We need to switch between Maximized and Normal sized window */
 550         window_placement.length = sizeof(WINDOWPLACEMENT);
 551         if( p_vout->b_fullscreen )
 552         {
 553             if( p_vout->p_sys->hparent )
 554             {
 555                 POINT point;
 556
 557                 /* Retrieve the window position */
 558                 point.x = point.y = 0;
 559                 ClientToScreen( p_vout->p_sys->hwnd, &point );
 560                 SetParent( p_vout->p_sys->hwnd, GetDesktopWindow() );
 561                 SetWindowPos( p_vout->p_sys->hwnd, 0, point.x, point.y, 0, 0,
 562                               SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED );
 563                 SetForegroundWindow( p_vout->p_sys->hwnd );
 564             }
 565
 566             /* Maximized window */
 567             GetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 568             window_placement.showCmd = SW_SHOWMAXIMIZED;
 569             /* Change window style, no borders and no title bar */
 570             i_style = WS_CLIPCHILDREN | WS_VISIBLE | WS_POPUP;
 571         }
 572         else
 573         {
 574             if( p_vout->p_sys->hparent )
 575             {
 576                 SetParent( p_vout->p_sys->hwnd, p_vout->p_sys->hparent );
 577                 SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0, 0, 0,
 578                               SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED );
 579                 i_style = WS_CLIPCHILDREN | WS_VISIBLE | WS_CHILD;
 580                 SetForegroundWindow( p_vout->p_sys->hparent );
 581             }
 582             else
 583             {
 584                 i_style = WS_CLIPCHILDREN | WS_OVERLAPPEDWINDOW |
 585                           WS_SIZEBOX | WS_VISIBLE;
 586             }
 587
 588             /* Normal window */
 589             GetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 590             window_placement.showCmd = SW_SHOWNORMAL;
 591
 592             /* Make sure the mouse cursor is displayed */
 593             PostMessage( p_vout->p_sys->hwnd, WM_VLC_SHOW_MOUSE, 0, 0 );
 594         }
 595
 596         /* Change window style, borders and title bar */
 597         SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE, i_style );
 598         SetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 599         SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0, 0, 0,
 600                       SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED );
 601
 602         /* Update the object variable and trigger callback */
 603         val.b_bool = p_vout->b_fullscreen;
 604         var_Set( p_vout, "fullscreen", val );
 605
 606         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 607         p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 608     }
 609
 610     /*
 611      * Pointer change
 612      */
 613     if( p_vout->b_fullscreen && !p_vout->p_sys->b_cursor_hidden &&
 614         (mdate() - p_vout->p_sys->i_lastmoved) > 5000000 )
 615     {
 616         POINT point;
 617         HWND hwnd;
 618
 619         /* Hide the cursor only if it is inside our window */
 620         GetCursorPos( &point );
 621         hwnd = WindowFromPoint(point);
 622         if( hwnd == p_vout->p_sys->hwnd || hwnd == p_vout->p_sys->hvideownd )
 623         {
 624             PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
 625         }
 626         else
 627         {
 628             p_vout->p_sys->i_lastmoved = mdate();
 629         }
 630     }
 631
 632     /*
 633      * "Always on top" status change
 634      */
 635     if( p_vout->p_sys->b_on_top_change )
 636     {
 637         vlc_value_t val;
 638         HMENU hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );
 639
 640         var_Get( p_vout, "video-on-top", &val );
 641
 642         /* Set the window on top if necessary */
 643         if( val.b_bool && !( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
 644                            & WS_EX_TOPMOST ) )
 645         {
 646             CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
 647                            MF_BYCOMMAND | MFS_CHECKED );
 648             SetWindowPos( p_vout->p_sys->hwnd, HWND_TOPMOST, 0, 0, 0, 0,
 649                           SWP_NOSIZE | SWP_NOMOVE );
 650         }
 651         else
 652         /* The window shouldn't be on top */
 653         if( !val.b_bool && ( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
 654                            & WS_EX_TOPMOST ) )
 655         {
 656             CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
 657                            MF_BYCOMMAND | MFS_UNCHECKED );
 658             SetWindowPos( p_vout->p_sys->hwnd, HWND_NOTOPMOST, 0, 0, 0, 0,
 659                           SWP_NOSIZE | SWP_NOMOVE );
 660         }
 661
 662         p_vout->p_sys->b_on_top_change = VLC_FALSE;
 663     }
 664
 665     /* Check if the event thread is still running */
 666     if( p_vout->p_sys->p_event->b_die )
 667     {
 668         return VLC_EGENERIC; /* exit */
 669     }
 670
 671     return VLC_SUCCESS;
 672 }
 673
 674 /*****************************************************************************
 675  * Display: displays previously rendered output
 676  *****************************************************************************
 677  * This function sends the currently rendered image to the display, wait until
 678  * it is displayed and switch the two rendering buffers, preparing next frame.
 679  *****************************************************************************/
 680 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 681 {
 682     HRESULT dxresult;
 683
 684     if( (p_vout->p_sys->p_display == NULL) )
 685     {
 686         msg_Warn( p_vout, "no display!" );
 687         return;
 688     }
 689
 690     /* Our surface can be lost so be sure to check this
 691      * and restore it if need be */
 692     if( IDirectDrawSurface2_IsLost( p_vout->p_sys->p_display )
 693         == DDERR_SURFACELOST )
 694     {
 695         if( IDirectDrawSurface2_Restore( p_vout->p_sys->p_display ) == DD_OK &&
 696             p_vout->p_sys->b_using_overlay )
 697             DirectXUpdateOverlay( p_vout );
 698     }
 699
 700     if( !p_vout->p_sys->b_using_overlay )
 701     {
 702         DDBLTFX  ddbltfx;
 703
 704         /* We ask for the "NOTEARING" option */
 705         memset( &ddbltfx, 0, sizeof(DDBLTFX) );
 706         ddbltfx.dwSize = sizeof(DDBLTFX);
 707         ddbltfx.dwDDFX = DDBLTFX_NOTEARING;
 708
 709         /* Blit video surface to display */
 710         dxresult = IDirectDrawSurface2_Blt( p_vout->p_sys->p_display,
 711                                             &p_vout->p_sys->rect_dest_clipped,
 712                                             p_pic->p_sys->p_surface,
 713                                             &p_vout->p_sys->rect_src_clipped,
 714                                             DDBLT_ASYNC, &ddbltfx );
 715         if( dxresult != DD_OK )
 716         {
 717             msg_Warn( p_vout, "could not blit surface (error %li)", dxresult );
 718             return;
 719         }
 720
 721     }
 722     else /* using overlay */
 723     {
 724         /* Flip the overlay buffers if we are using back buffers */
 725         if( p_pic->p_sys->p_front_surface == p_pic->p_sys->p_surface )
 726         {
 727             return;
 728         }
 729
 730         dxresult = IDirectDrawSurface2_Flip( p_pic->p_sys->p_front_surface,
 731                                              NULL, DDFLIP_WAIT );
 732         if( dxresult != DD_OK )
 733         {
 734             msg_Warn( p_vout, "could not flip overlay (error %li)", dxresult );
 735         }
 736
 737         /* set currently displayed pic */
 738         p_vout->p_sys->p_current_surface = p_pic->p_sys->p_front_surface;
 739
 740         /* Lock surface to get all the required info */
 741         if( DirectXLockSurface( p_vout, p_pic ) )
 742         {
 743             /* AAARRGG */
 744             msg_Warn( p_vout, "cannot lock surface" );
 745             return;
 746         }
 747         DirectXUnlockSurface( p_vout, p_pic );
 748     }
 749 }
 750
 751 /* following functions are local */
 752
 753 /*****************************************************************************
 754  * DirectXEnumCallback: Device enumeration
 755  *****************************************************************************
 756  * This callback function is called by DirectDraw once for each
 757  * available DirectDraw device.
 758  *****************************************************************************/
 759 BOOL WINAPI DirectXEnumCallback( GUID* p_guid, LPTSTR psz_desc,
 760                                  LPTSTR psz_drivername, VOID* p_context,
 761                                  HMONITOR hmon )
 762 {
 763     vout_thread_t *p_vout = (vout_thread_t *)p_context;
 764     vlc_value_t device;
 765
 766     msg_Dbg( p_vout, "DirectXEnumCallback: %s, %s", psz_desc, psz_drivername );
 767
 768     if( hmon )
 769     {
 770         var_Get( p_vout, "directx-device", &device );
 771
 772         if( ( !device.psz_string || !*device.psz_string ) &&
 773             hmon == p_vout->p_sys->hmonitor )
 774         {
 775             if( device.psz_string ) free( device.psz_string );
 776         }
 777         else if( strcmp( psz_drivername, device.psz_string ) == 0 )
 778         {
 779             MONITORINFO monitor_info;
 780             monitor_info.cbSize = sizeof( MONITORINFO );
 781
 782             if( p_vout->p_sys->GetMonitorInfo( hmon, &monitor_info ) )
 783             {
 784                 RECT rect;
 785
 786                 /* Move window to the right screen */
 787                 GetWindowRect( p_vout->p_sys->hwnd, &rect );
 788                 if( !IntersectRect( &rect, &rect, &monitor_info.rcWork ) )
 789                 {
 790                     rect.left = monitor_info.rcWork.left;
 791                     rect.top = monitor_info.rcWork.top;
 792                     msg_Dbg( p_vout, "DirectXEnumCallback: Setting window "
 793                              "position to %d,%d", rect.left, rect.top );
 794                     SetWindowPos( p_vout->p_sys->hwnd, NULL,
 795                                   rect.left, rect.top, 0, 0,
 796                                   SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 797                 }
 798             }
 799
 800             p_vout->p_sys->hmonitor = hmon;
 801             if( device.psz_string ) free( device.psz_string );
 802         }
 803         else
 804         {
 805             if( device.psz_string ) free( device.psz_string );
 806             return TRUE; /* Keep enumerating */
 807         }
 808
 809         msg_Dbg( p_vout, "selecting %s, %s", psz_desc, psz_drivername );
 810         p_vout->p_sys->p_display_driver = malloc( sizeof(GUID) );
 811         if( p_vout->p_sys->p_display_driver )
 812             memcpy( p_vout->p_sys->p_display_driver, p_guid, sizeof(GUID) );
 813     }
 814
 815     return TRUE; /* Keep enumerating */
 816 }
 817
 818 /*****************************************************************************
 819  * DirectXInitDDraw: Takes care of all the DirectDraw initialisations
 820  *****************************************************************************
 821  * This function initialise and allocate resources for DirectDraw.
 822  *****************************************************************************/
 823 static int DirectXInitDDraw( vout_thread_t *p_vout )
 824 {
 825     HRESULT dxresult;
 826     HRESULT (WINAPI *OurDirectDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *);
 827     HRESULT (WINAPI *OurDirectDrawEnumerateEx)( LPDDENUMCALLBACKEXA, LPVOID,
 828                                                 DWORD );
 829     LPDIRECTDRAW p_ddobject;
 830
 831     msg_Dbg( p_vout, "DirectXInitDDraw" );
 832
 833     /* Load direct draw DLL */
 834     p_vout->p_sys->hddraw_dll = LoadLibrary("DDRAW.DLL");
 835     if( p_vout->p_sys->hddraw_dll == NULL )
 836     {
 837         msg_Warn( p_vout, "DirectXInitDDraw failed loading ddraw.dll" );
 838         goto error;
 839     }
 840
 841     OurDirectDrawCreate =
 842       (void *)GetProcAddress(p_vout->p_sys->hddraw_dll, "DirectDrawCreate");
 843     if( OurDirectDrawCreate == NULL )
 844     {
 845         msg_Err( p_vout, "DirectXInitDDraw failed GetProcAddress" );
 846         goto error;
 847     }
 848
 849     OurDirectDrawEnumerateEx =
 850       (void *)GetProcAddress( p_vout->p_sys->hddraw_dll,
 851                               "DirectDrawEnumerateExA" );
 852
 853     if( OurDirectDrawEnumerateEx && p_vout->p_sys->MonitorFromWindow )
 854     {
 855         vlc_value_t device;
 856
 857         var_Get( p_vout, "directx-device", &device );
 858         if( device.psz_string )
 859         {
 860             msg_Dbg( p_vout, "directx-device: %s", device.psz_string );
 861             free( device.psz_string );
 862         }
 863
 864         p_vout->p_sys->hmonitor =
 865             p_vout->p_sys->MonitorFromWindow( p_vout->p_sys->hwnd,
 866                                               MONITOR_DEFAULTTONEAREST );
 867
 868         /* Enumerate displays */
 869         OurDirectDrawEnumerateEx( DirectXEnumCallback, p_vout,
 870                                   DDENUM_ATTACHEDSECONDARYDEVICES );
 871     }
 872
 873     /* Initialize DirectDraw now */
 874     dxresult = OurDirectDrawCreate( p_vout->p_sys->p_display_driver,
 875                                     &p_ddobject, NULL );
 876     if( dxresult != DD_OK )
 877     {
 878         msg_Err( p_vout, "DirectXInitDDraw cannot initialize DDraw" );
 879         goto error;
 880     }
 881
 882     /* Get the IDirectDraw2 interface */
 883     dxresult = IDirectDraw_QueryInterface( p_ddobject, &IID_IDirectDraw2,
 884                                         (LPVOID *)&p_vout->p_sys->p_ddobject );
 885     /* Release the unused interface */
 886     IDirectDraw_Release( p_ddobject );
 887     if( dxresult != DD_OK )
 888     {
 889         msg_Err( p_vout, "cannot get IDirectDraw2 interface" );
 890         goto error;
 891     }
 892
 893     /* Set DirectDraw Cooperative level, ie what control we want over Windows
 894      * display */
 895     dxresult = IDirectDraw2_SetCooperativeLevel( p_vout->p_sys->p_ddobject,
 896                                                  NULL, DDSCL_NORMAL );
 897     if( dxresult != DD_OK )
 898     {
 899         msg_Err( p_vout, "cannot set direct draw cooperative level" );
 900         goto error;
 901     }
 902
 903     /* Get the size of the current display device */
 904     if( p_vout->p_sys->hmonitor && p_vout->p_sys->GetMonitorInfo )
 905     {
 906         MONITORINFO monitor_info;
 907         monitor_info.cbSize = sizeof( MONITORINFO );
 908         p_vout->p_sys->GetMonitorInfo( p_vout->p_sys->hmonitor,
 909                                        &monitor_info );
 910         p_vout->p_sys->rect_display = monitor_info.rcMonitor;
 911     }
 912     else
 913     {
 914         p_vout->p_sys->rect_display.left = 0;
 915         p_vout->p_sys->rect_display.top = 0;
 916         p_vout->p_sys->rect_display.right  = GetSystemMetrics(SM_CXSCREEN);
 917         p_vout->p_sys->rect_display.bottom = GetSystemMetrics(SM_CYSCREEN);
 918     }
 919
 920     msg_Dbg( p_vout, "screen dimensions (%ix%i,%ix%i)",
 921              p_vout->p_sys->rect_display.left,
 922              p_vout->p_sys->rect_display.top,
 923              p_vout->p_sys->rect_display.right,
 924              p_vout->p_sys->rect_display.bottom );
 925
 926     /* Probe the capabilities of the hardware */
 927     DirectXGetDDrawCaps( p_vout );
 928
 929     msg_Dbg( p_vout, "End DirectXInitDDraw" );
 930     return VLC_SUCCESS;
 931
 932  error:
 933     if( p_vout->p_sys->p_ddobject )
 934         IDirectDraw2_Release( p_vout->p_sys->p_ddobject );
 935     if( p_vout->p_sys->hddraw_dll )
 936         FreeLibrary( p_vout->p_sys->hddraw_dll );
 937     p_vout->p_sys->hddraw_dll = NULL;
 938     p_vout->p_sys->p_ddobject = NULL;
 939     return VLC_EGENERIC;
 940 }
 941
 942 /*****************************************************************************
 943  * DirectXCreateDisplay: create the DirectDraw display.
 944  *****************************************************************************
 945  * Create and initialize display according to preferences specified in the vout
 946  * thread fields.
 947  *****************************************************************************/
 948 static int DirectXCreateDisplay( vout_thread_t *p_vout )
 949 {
 950     HRESULT              dxresult;
 951     DDSURFACEDESC        ddsd;
 952     LPDIRECTDRAWSURFACE  p_display;
 953
 954     msg_Dbg( p_vout, "DirectXCreateDisplay" );
 955
 956     /* Now get the primary surface. This surface is what you actually see
 957      * on your screen */
 958     memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 959     ddsd.dwSize = sizeof(DDSURFACEDESC);
 960     ddsd.dwFlags = DDSD_CAPS;
 961     ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
 962
 963     dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 964                                            &ddsd, &p_display, NULL );
 965     if( dxresult != DD_OK )
 966     {
 967         msg_Err( p_vout, "cannot get primary surface (error %li)", dxresult );
 968         return VLC_EGENERIC;
 969     }
 970
 971     dxresult = IDirectDrawSurface_QueryInterface( p_display,
 972                                          &IID_IDirectDrawSurface2,
 973                                          (LPVOID *)&p_vout->p_sys->p_display );
 974     /* Release the old interface */
 975     IDirectDrawSurface_Release( p_display );
 976     if ( dxresult != DD_OK )
 977     {
 978         msg_Err( p_vout, "cannot query IDirectDrawSurface2 interface "
 979                          "(error %li)", dxresult );
 980         return VLC_EGENERIC;
 981     }
 982
 983     /* The clipper will be used only in non-overlay mode */
 984     DirectXCreateClipper( p_vout );
 985
 986     /* Make sure the colorkey will be painted */
 987     p_vout->p_sys->i_colorkey = 1;
 988     p_vout->p_sys->i_rgb_colorkey =
 989         DirectXFindColorkey( p_vout, p_vout->p_sys->i_colorkey );
 990
 991     /* Create the actual brush */
 992     SetClassLong( p_vout->p_sys->hvideownd, GCL_HBRBACKGROUND,
 993                   (LONG)CreateSolidBrush( p_vout->p_sys->i_rgb_colorkey ) );
 994     InvalidateRect( p_vout->p_sys->hvideownd, NULL, TRUE );
 995     DirectXUpdateRects( p_vout, VLC_TRUE );
 996
 997     return VLC_SUCCESS;
 998 }
 999
1000 /*****************************************************************************
1001  * DirectXCreateClipper: Create a clipper that will be used when blitting the
1002  *                       RGB surface to the main display.
1003  *****************************************************************************
1004  * This clipper prevents us to modify by mistake anything on the screen
1005  * which doesn't belong to our window. For example when a part of our video
1006  * window is hidden by another window.
1007  *****************************************************************************/
1008 static int DirectXCreateClipper( vout_thread_t *p_vout )
1009 {
1010     HRESULT dxresult;
1011
1012     msg_Dbg( p_vout, "DirectXCreateClipper" );
1013
1014     /* Create the clipper */
1015     dxresult = IDirectDraw2_CreateClipper( p_vout->p_sys->p_ddobject, 0,
1016                                            &p_vout->p_sys->p_clipper, NULL );
1017     if( dxresult != DD_OK )
1018     {
1019         msg_Warn( p_vout, "cannot create clipper (error %li)", dxresult );
1020         goto error;
1021     }
1022
1023     /* Associate the clipper to the window */
1024     dxresult = IDirectDrawClipper_SetHWnd( p_vout->p_sys->p_clipper, 0,
1025                                            p_vout->p_sys->hvideownd );
1026     if( dxresult != DD_OK )
1027     {
1028         msg_Warn( p_vout, "cannot attach clipper to window (error %li)",
1029                           dxresult );
1030         goto error;
1031     }
1032
1033     /* associate the clipper with the surface */
1034     dxresult = IDirectDrawSurface_SetClipper(p_vout->p_sys->p_display,
1035                                              p_vout->p_sys->p_clipper);
1036     if( dxresult != DD_OK )
1037     {
1038         msg_Warn( p_vout, "cannot attach clipper to surface (error %li)",
1039                           dxresult );
1040         goto error;
1041     }
1042
1043     return VLC_SUCCESS;
1044
1045  error:
1046     if( p_vout->p_sys->p_clipper )
1047     {
1048         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
1049     }
1050     p_vout->p_sys->p_clipper = NULL;
1051     return VLC_EGENERIC;
1052 }
1053
1054 /*****************************************************************************
1055  * DirectXCreateSurface: create an YUV overlay or RGB surface for the video.
1056  *****************************************************************************
1057  * The best method of display is with an YUV overlay because the YUV->RGB
1058  * conversion is done in hardware.
1059  * You can also create a plain RGB surface.
1060  * ( Maybe we could also try an RGB overlay surface, which could have hardware
1061  * scaling and which would also be faster in window mode because you don't
1062  * need to do any blitting to the main display...)
1063  *****************************************************************************/
1064 static int DirectXCreateSurface( vout_thread_t *p_vout,
1065                                  LPDIRECTDRAWSURFACE2 *pp_surface_final,
1066                                  int i_chroma, int b_overlay,
1067                                  int i_backbuffers )
1068 {
1069     HRESULT dxresult;
1070     LPDIRECTDRAWSURFACE p_surface;
1071     DDSURFACEDESC ddsd;
1072
1073     /* Create the video surface */
1074     if( b_overlay )
1075     {
1076         /* Now try to create the YUV overlay surface.
1077          * This overlay will be displayed on top of the primary surface.
1078          * A color key is used to determine whether or not the overlay will be
1079          * displayed, ie the overlay will be displayed in place of the primary
1080          * surface wherever the primary surface will have this color.
1081          * The video window has been created with a background of this color so
1082          * the overlay will be only displayed on top of this window */
1083
1084         memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
1085         ddsd.dwSize = sizeof(DDSURFACEDESC);
1086         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1087         ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
1088         ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
1089         ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
1090         ddsd.dwFlags |= (i_backbuffers ? DDSD_BACKBUFFERCOUNT : 0);
1091         ddsd.ddsCaps.dwCaps = DDSCAPS_OVERLAY | DDSCAPS_VIDEOMEMORY;
1092         ddsd.ddsCaps.dwCaps |= (i_backbuffers ? DDSCAPS_COMPLEX | DDSCAPS_FLIP
1093                                 : 0 );
1094         ddsd.dwHeight = p_vout->render.i_height;
1095         ddsd.dwWidth = p_vout->render.i_width;
1096         ddsd.dwBackBufferCount = i_backbuffers;
1097
1098         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
1099                                                &ddsd, &p_surface, NULL );
1100         if( dxresult != DD_OK )
1101         {
1102             *pp_surface_final = NULL;
1103             return VLC_EGENERIC;
1104         }
1105     }
1106
1107     if( !b_overlay )
1108     {
1109         vlc_bool_t b_rgb_surface =
1110             ( i_chroma == VLC_FOURCC('R','G','B','2') )
1111           || ( i_chroma == VLC_FOURCC('R','V','1','5') )
1112            || ( i_chroma == VLC_FOURCC('R','V','1','6') )
1113             || ( i_chroma == VLC_FOURCC('R','V','2','4') )
1114              || ( i_chroma == VLC_FOURCC('R','V','3','2') );
1115
1116         memset( &ddsd, 0, sizeof( DDSURFACEDESC ) );
1117         ddsd.dwSize = sizeof(DDSURFACEDESC);
1118         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1119         ddsd.dwFlags = DDSD_HEIGHT | DDSD_WIDTH | DDSD_CAPS;
1120         ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
1121         ddsd.dwHeight = p_vout->render.i_height;
1122         ddsd.dwWidth = p_vout->render.i_width;
1123
1124         if( p_vout->p_sys->b_use_sysmem )
1125             ddsd.ddsCaps.dwCaps |= DDSCAPS_SYSTEMMEMORY;
1126         else
1127             ddsd.ddsCaps.dwCaps |= DDSCAPS_VIDEOMEMORY;
1128
1129         if( !b_rgb_surface )
1130         {
1131             ddsd.dwFlags |= DDSD_PIXELFORMAT;
1132             ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
1133             ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
1134         }
1135
1136         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
1137                                                &ddsd, &p_surface, NULL );
1138         if( dxresult != DD_OK )
1139         {
1140             *pp_surface_final = NULL;
1141             return VLC_EGENERIC;
1142         }
1143     }
1144
1145     /* Now that the surface is created, try to get a newer DirectX interface */
1146     dxresult = IDirectDrawSurface_QueryInterface( p_surface,
1147                                      &IID_IDirectDrawSurface2,
1148                                      (LPVOID *)pp_surface_final );
1149     IDirectDrawSurface_Release( p_surface );    /* Release the old interface */
1150     if ( dxresult != DD_OK )
1151     {
1152         msg_Err( p_vout, "cannot query IDirectDrawSurface2 interface "
1153                          "(error %li)", dxresult );
1154         *pp_surface_final = NULL;
1155         return VLC_EGENERIC;
1156     }
1157
1158     if( b_overlay )
1159     {
1160         /* Check the overlay is useable as some graphics cards allow creating
1161          * several overlays but only one can be used at one time. */
1162         p_vout->p_sys->p_current_surface = *pp_surface_final;
1163         if( DirectXUpdateOverlay( p_vout ) != VLC_SUCCESS )
1164         {
1165             IDirectDrawSurface2_Release( *pp_surface_final );
1166             *pp_surface_final = NULL;
1167             msg_Err( p_vout, "overlay unuseable (might already be in use)" );
1168             return VLC_EGENERIC;
1169         }
1170     }
1171
1172     return VLC_SUCCESS;
1173 }
1174
1175 /*****************************************************************************
1176  * DirectXUpdateOverlay: Move or resize overlay surface on video display.
1177  *****************************************************************************
1178  * This function is used to move or resize an overlay surface on the screen.
1179  * Ususally the overlay is moved by the user and thus, by a move or resize
1180  * event (in Manage).
1181  *****************************************************************************/
1182 int DirectXUpdateOverlay( vout_thread_t *p_vout )
1183 {
1184     DDOVERLAYFX     ddofx;
1185     DWORD           dwFlags;
1186     HRESULT         dxresult;
1187     RECT            rect_src = p_vout->p_sys->rect_src_clipped;
1188     RECT            rect_dest = p_vout->p_sys->rect_dest_clipped;
1189
1190     if( !p_vout->p_sys->b_using_overlay ) return VLC_EGENERIC;
1191
1192     if( p_vout->p_sys->b_wallpaper )
1193     {
1194         int i_x, i_y, i_width, i_height;
1195
1196         rect_src.left = rect_src.top = 0;
1197         rect_src.right = p_vout->render.i_width;
1198         rect_src.bottom = p_vout->render.i_height;
1199
1200         rect_dest = p_vout->p_sys->rect_display;
1201         vout_PlacePicture( p_vout, rect_dest.right, rect_dest.bottom,
1202                            &i_x, &i_y, &i_width, &i_height );
1203
1204         rect_dest.left += i_x;
1205         rect_dest.right = rect_dest.left + i_width;
1206         rect_dest.top += i_y;
1207         rect_dest.bottom = rect_dest.top + i_height;
1208     }
1209
1210     vlc_mutex_lock( &p_vout->p_sys->lock );
1211     if( p_vout->p_sys->p_current_surface == NULL )
1212     {
1213         vlc_mutex_unlock( &p_vout->p_sys->lock );
1214         return VLC_EGENERIC;
1215     }
1216
1217     /* The new window dimensions should already have been computed by the
1218      * caller of this function */
1219
1220     /* Position and show the overlay */
1221     memset(&ddofx, 0, sizeof(DDOVERLAYFX));
1222     ddofx.dwSize = sizeof(DDOVERLAYFX);
1223     ddofx.dckDestColorkey.dwColorSpaceLowValue = p_vout->p_sys->i_colorkey;
1224     ddofx.dckDestColorkey.dwColorSpaceHighValue = p_vout->p_sys->i_colorkey;
1225
1226     dwFlags = DDOVER_SHOW | DDOVER_KEYDESTOVERRIDE;
1227
1228     dxresult = IDirectDrawSurface2_UpdateOverlay(
1229                    p_vout->p_sys->p_current_surface,
1230                    &rect_src, p_vout->p_sys->p_display, &rect_dest,
1231                    dwFlags, &ddofx );
1232
1233     vlc_mutex_unlock( &p_vout->p_sys->lock );
1234
1235     if(dxresult != DD_OK)
1236     {
1237         msg_Warn( p_vout, "DirectXUpdateOverlay cannot move/resize overlay" );
1238         return VLC_EGENERIC;
1239     }
1240
1241     return VLC_SUCCESS;
1242 }
1243
1244 /*****************************************************************************
1245  * DirectXCloseDDraw: Release the DDraw object allocated by DirectXInitDDraw
1246  *****************************************************************************
1247  * This function returns all resources allocated by DirectXInitDDraw.
1248  *****************************************************************************/
1249 static void DirectXCloseDDraw( vout_thread_t *p_vout )
1250 {
1251     msg_Dbg( p_vout, "DirectXCloseDDraw" );
1252     if( p_vout->p_sys->p_ddobject != NULL )
1253     {
1254         IDirectDraw2_Release(p_vout->p_sys->p_ddobject);
1255         p_vout->p_sys->p_ddobject = NULL;
1256     }
1257
1258     if( p_vout->p_sys->hddraw_dll != NULL )
1259     {
1260         FreeLibrary( p_vout->p_sys->hddraw_dll );
1261         p_vout->p_sys->hddraw_dll = NULL;
1262     }
1263
1264     if( p_vout->p_sys->p_display_driver != NULL )
1265     {
1266         free( p_vout->p_sys->p_display_driver );
1267         p_vout->p_sys->p_display_driver = NULL;
1268     }
1269
1270     p_vout->p_sys->hmonitor = NULL;
1271 }
1272
1273 /*****************************************************************************
1274  * DirectXCloseDisplay: close and reset the DirectX display device
1275  *****************************************************************************
1276  * This function returns all resources allocated by DirectXCreateDisplay.
1277  *****************************************************************************/
1278 static void DirectXCloseDisplay( vout_thread_t *p_vout )
1279 {
1280     msg_Dbg( p_vout, "DirectXCloseDisplay" );
1281
1282     if( p_vout->p_sys->p_clipper != NULL )
1283     {
1284         msg_Dbg( p_vout, "DirectXCloseDisplay clipper" );
1285         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
1286         p_vout->p_sys->p_clipper = NULL;
1287     }
1288
1289     if( p_vout->p_sys->p_display != NULL )
1290     {
1291         msg_Dbg( p_vout, "DirectXCloseDisplay display" );
1292         IDirectDrawSurface2_Release( p_vout->p_sys->p_display );
1293         p_vout->p_sys->p_display = NULL;
1294     }
1295 }
1296
1297 /*****************************************************************************
1298  * DirectXCloseSurface: close the YUV overlay or RGB surface.
1299  *****************************************************************************
1300  * This function returns all resources allocated for the surface.
1301  *****************************************************************************/
1302 static void DirectXCloseSurface( vout_thread_t *p_vout,
1303                                  LPDIRECTDRAWSURFACE2 p_surface )
1304 {
1305     msg_Dbg( p_vout, "DirectXCloseSurface" );
1306     if( p_surface != NULL )
1307     {
1308         IDirectDrawSurface2_Release( p_surface );
1309     }
1310 }
1311
1312 /*****************************************************************************
1313  * NewPictureVec: allocate a vector of identical pictures
1314  *****************************************************************************
1315  * Returns 0 on success, -1 otherwise
1316  *****************************************************************************/
1317 static int NewPictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1318                           int i_num_pics )
1319 {
1320     int i;
1321     int i_ret = VLC_SUCCESS;
1322     LPDIRECTDRAWSURFACE2 p_surface;
1323
1324     msg_Dbg( p_vout, "NewPictureVec overlay:%s chroma:%.4s",
1325              p_vout->p_sys->b_using_overlay ? "yes" : "no",
1326              (char *)&p_vout->output.i_chroma );
1327
1328     I_OUTPUTPICTURES = 0;
1329
1330     /* First we try to use an YUV overlay surface.
1331      * The overlay surface that we create won't be used to decode directly
1332      * into it because accessing video memory directly is way to slow (remember
1333      * that pictures are decoded macroblock per macroblock). Instead the video
1334      * will be decoded in picture buffers in system memory which will then be
1335      * memcpy() to the overlay surface. */
1336     if( p_vout->p_sys->b_using_overlay )
1337     {
1338         /* Triple buffering rocks! it doesn't have any processing overhead
1339          * (you don't have to wait for the vsync) and provides for a very nice
1340          * video quality (no tearing). */
1341         if( p_vout->p_sys->b_3buf_overlay )
1342             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1343                                           p_vout->output.i_chroma,
1344                                           p_vout->p_sys->b_using_overlay,
1345                                           2 /* number of backbuffers */ );
1346
1347         if( !p_vout->p_sys->b_3buf_overlay || i_ret != VLC_SUCCESS )
1348         {
1349             /* Try to reduce the number of backbuffers */
1350             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1351                                           p_vout->output.i_chroma,
1352                                           p_vout->p_sys->b_using_overlay,
1353                                           0 /* number of backbuffers */ );
1354         }
1355
1356         if( i_ret == VLC_SUCCESS )
1357         {
1358             DDSCAPS dds_caps;
1359             picture_t front_pic;
1360             picture_sys_t front_pic_sys;
1361             front_pic.p_sys = &front_pic_sys;
1362
1363             /* Allocate internal structure */
1364             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1365             if( p_pic[0].p_sys == NULL )
1366             {
1367                 DirectXCloseSurface( p_vout, p_surface );
1368                 return VLC_ENOMEM;
1369             }
1370
1371             /* set front buffer */
1372             p_pic[0].p_sys->p_front_surface = p_surface;
1373
1374             /* Get the back buffer */
1375             memset( &dds_caps, 0, sizeof( DDSCAPS ) );
1376             dds_caps.dwCaps = DDSCAPS_BACKBUFFER;
1377             if( DD_OK != IDirectDrawSurface2_GetAttachedSurface(
1378                                                 p_surface, &dds_caps,
1379                                                 &p_pic[0].p_sys->p_surface ) )
1380             {
1381                 msg_Warn( p_vout, "NewPictureVec could not get back buffer" );
1382                 /* front buffer is the same as back buffer */
1383                 p_pic[0].p_sys->p_surface = p_surface;
1384             }
1385
1386
1387             p_vout->p_sys->p_current_surface = front_pic.p_sys->p_surface =
1388                 p_pic[0].p_sys->p_front_surface;
1389
1390             /* Reset the front buffer memory */
1391             if( DirectXLockSurface( p_vout, &front_pic ) == VLC_SUCCESS )
1392             {
1393                 int i,j;
1394                 for( i = 0; i < front_pic.i_planes; i++ )
1395                     for( j = 0; j < front_pic.p[i].i_visible_lines; j++)
1396                         memset( front_pic.p[i].p_pixels + j *
1397                                 front_pic.p[i].i_pitch, 127,
1398                                 front_pic.p[i].i_visible_pitch );
1399
1400                 DirectXUnlockSurface( p_vout, &front_pic );
1401             }
1402
1403             DirectXUpdateOverlay( p_vout );
1404             I_OUTPUTPICTURES = 1;
1405             msg_Dbg( p_vout, "YUV overlay created successfully" );
1406         }
1407     }
1408
1409     /* As we can't have an overlay, we'll try to create a plain offscreen
1410      * surface. This surface will reside in video memory because there's a
1411      * better chance then that we'll be able to use some kind of hardware
1412      * acceleration like rescaling, blitting or YUV->RGB conversions.
1413      * We then only need to blit this surface onto the main display when we
1414      * want to display it */
1415     if( !p_vout->p_sys->b_using_overlay )
1416     {
1417         if( p_vout->p_sys->b_hw_yuv )
1418         {
1419             DWORD i_codes;
1420             DWORD *pi_codes;
1421             vlc_bool_t b_result = VLC_FALSE;
1422
1423             /* Check if the chroma is supported first. This is required
1424              * because a few buggy drivers don't mind creating the surface
1425              * even if they don't know about the chroma. */
1426             if( IDirectDraw2_GetFourCCCodes( p_vout->p_sys->p_ddobject,
1427                                              &i_codes, NULL ) == DD_OK )
1428             {
1429                 pi_codes = malloc( i_codes * sizeof(DWORD) );
1430                 if( pi_codes && IDirectDraw2_GetFourCCCodes(
1431                     p_vout->p_sys->p_ddobject, &i_codes, pi_codes ) == DD_OK )
1432                 {
1433                     for( i = 0; i < (int)i_codes; i++ )
1434                     {
1435                         if( p_vout->output.i_chroma == pi_codes[i] )
1436                         {
1437                             b_result = VLC_TRUE;
1438                             break;
1439                         }
1440                     }
1441                 }
1442             }
1443
1444             if( b_result )
1445                 i_ret = DirectXCreateSurface( p_vout, &p_surface,
1446                                               p_vout->output.i_chroma,
1447                                               0 /* no overlay */,
1448                                               0 /* no back buffers */ );
1449             else
1450                 p_vout->p_sys->b_hw_yuv = VLC_FALSE;
1451         }
1452
1453         if( i_ret || !p_vout->p_sys->b_hw_yuv )
1454         {
1455             /* Our last choice is to use a plain RGB surface */
1456             DDPIXELFORMAT ddpfPixelFormat;
1457
1458             ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1459             IDirectDrawSurface2_GetPixelFormat( p_vout->p_sys->p_display,
1460                                                 &ddpfPixelFormat );
1461
1462             if( ddpfPixelFormat.dwFlags & DDPF_RGB )
1463             {
1464                 switch( ddpfPixelFormat.dwRGBBitCount )
1465                 {
1466                 case 8: /* FIXME: set the palette */
1467                     p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
1468                     break;
1469                 case 15:
1470                     p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
1471                     break;
1472                 case 16:
1473                     p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
1474                     break;
1475                 case 24:
1476                     p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
1477                     break;
1478                 case 32:
1479                     p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
1480                     break;
1481                 default:
1482                     msg_Err( p_vout, "unknown screen depth" );
1483                     return VLC_EGENERIC;
1484                 }
1485                 p_vout->output.i_rmask = ddpfPixelFormat.dwRBitMask;
1486                 p_vout->output.i_gmask = ddpfPixelFormat.dwGBitMask;
1487                 p_vout->output.i_bmask = ddpfPixelFormat.dwBBitMask;
1488             }
1489
1490             p_vout->p_sys->b_hw_yuv = 0;
1491
1492             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1493                                           p_vout->output.i_chroma,
1494                                           0 /* no overlay */,
1495                                           0 /* no back buffers */ );
1496
1497             if( i_ret && !p_vout->p_sys->b_use_sysmem )
1498             {
1499                 /* Give it a last try with b_use_sysmem enabled */
1500                 p_vout->p_sys->b_use_sysmem = 1;
1501
1502                 i_ret = DirectXCreateSurface( p_vout, &p_surface,
1503                                               p_vout->output.i_chroma,
1504                                               0 /* no overlay */,
1505                                               0 /* no back buffers */ );
1506             }
1507         }
1508
1509         if( i_ret == VLC_SUCCESS )
1510         {
1511             /* Allocate internal structure */
1512             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1513             if( p_pic[0].p_sys == NULL )
1514             {
1515                 DirectXCloseSurface( p_vout, p_surface );
1516                 return VLC_ENOMEM;
1517             }
1518
1519             p_pic[0].p_sys->p_surface = p_pic[0].p_sys->p_front_surface
1520                 = p_surface;
1521
1522             I_OUTPUTPICTURES = 1;
1523
1524             msg_Dbg( p_vout, "created plain surface of chroma:%.4s",
1525                      (char *)&p_vout->output.i_chroma );
1526         }
1527     }
1528
1529
1530     /* Now that we've got all our direct-buffers, we can finish filling in the
1531      * picture_t structures */
1532     for( i = 0; i < I_OUTPUTPICTURES; i++ )
1533     {
1534         p_pic[i].i_status = DESTROYED_PICTURE;
1535         p_pic[i].i_type   = DIRECT_PICTURE;
1536         p_pic[i].b_slow   = VLC_TRUE;
1537         p_pic[i].pf_lock  = DirectXLockSurface;
1538         p_pic[i].pf_unlock = DirectXUnlockSurface;
1539         PP_OUTPUTPICTURE[i] = &p_pic[i];
1540
1541         if( DirectXLockSurface( p_vout, &p_pic[i] ) != VLC_SUCCESS )
1542         {
1543             /* AAARRGG */
1544             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1545             I_OUTPUTPICTURES = 0;
1546             msg_Err( p_vout, "cannot lock surface" );
1547             return VLC_EGENERIC;
1548         }
1549         DirectXUnlockSurface( p_vout, &p_pic[i] );
1550     }
1551
1552     msg_Dbg( p_vout, "End NewPictureVec (%s)",
1553              I_OUTPUTPICTURES ? "succeeded" : "failed" );
1554
1555     return VLC_SUCCESS;
1556 }
1557
1558 /*****************************************************************************
1559  * FreePicture: destroy a picture vector allocated with NewPictureVec
1560  *****************************************************************************
1561  *
1562  *****************************************************************************/
1563 static void FreePictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1564                             int i_num_pics )
1565 {
1566     int i;
1567
1568     vlc_mutex_lock( &p_vout->p_sys->lock );
1569     p_vout->p_sys->p_current_surface = 0;
1570     vlc_mutex_unlock( &p_vout->p_sys->lock );
1571
1572     for( i = 0; i < i_num_pics; i++ )
1573     {
1574         DirectXCloseSurface( p_vout, p_pic[i].p_sys->p_front_surface );
1575
1576         for( i = 0; i < i_num_pics; i++ )
1577         {
1578             free( p_pic[i].p_sys );
1579         }
1580     }
1581 }
1582
1583 /*****************************************************************************
1584  * UpdatePictureStruct: updates the internal data in the picture_t structure
1585  *****************************************************************************
1586  * This will setup stuff for use by the video_output thread
1587  *****************************************************************************/
1588 static int UpdatePictureStruct( vout_thread_t *p_vout, picture_t *p_pic,
1589                                 int i_chroma )
1590 {
1591     switch( p_vout->output.i_chroma )
1592     {
1593         case VLC_FOURCC('R','G','B','2'):
1594         case VLC_FOURCC('R','V','1','5'):
1595         case VLC_FOURCC('R','V','1','6'):
1596         case VLC_FOURCC('R','V','2','4'):
1597         case VLC_FOURCC('R','V','3','2'):
1598             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1599             p_pic->p->i_lines = p_vout->output.i_height;
1600             p_pic->p->i_visible_lines = p_vout->output.i_height;
1601             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1602             switch( p_vout->output.i_chroma )
1603             {
1604                 case VLC_FOURCC('R','G','B','2'):
1605                     p_pic->p->i_pixel_pitch = 1;
1606                     break;
1607                 case VLC_FOURCC('R','V','1','5'):
1608                 case VLC_FOURCC('R','V','1','6'):
1609                     p_pic->p->i_pixel_pitch = 2;
1610                     break;
1611                 case VLC_FOURCC('R','V','2','4'):
1612                     p_pic->p->i_pixel_pitch = 3;
1613                     break;
1614                 case VLC_FOURCC('R','V','3','2'):
1615                     p_pic->p->i_pixel_pitch = 4;
1616                     break;
1617                 default:
1618                     return VLC_EGENERIC;
1619             }
1620             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1621               p_pic->p->i_pixel_pitch;
1622             p_pic->i_planes = 1;
1623             break;
1624
1625         case VLC_FOURCC('Y','V','1','2'):
1626
1627             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1628             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1629             p_pic->p[Y_PLANE].i_visible_lines = p_vout->output.i_height;
1630             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1631             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1632             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1633               p_pic->p[Y_PLANE].i_pixel_pitch;
1634
1635             p_pic->V_PIXELS =  p_pic->Y_PIXELS
1636               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1637             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1638             p_pic->p[V_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1639             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1640             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1641             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1642               p_pic->p[V_PLANE].i_pixel_pitch;
1643
1644             p_pic->U_PIXELS = p_pic->V_PIXELS
1645               + p_pic->p[V_PLANE].i_lines * p_pic->p[V_PLANE].i_pitch;
1646             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1647             p_pic->p[U_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1648             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1649             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1650             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1651               p_pic->p[U_PLANE].i_pixel_pitch;
1652
1653             p_pic->i_planes = 3;
1654             break;
1655
1656         case VLC_FOURCC('I','Y','U','V'):
1657
1658             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1659             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1660             p_pic->p[Y_PLANE].i_visible_lines = p_vout->output.i_height;
1661             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1662             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1663             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1664               p_pic->p[Y_PLANE].i_pixel_pitch;
1665
1666             p_pic->U_PIXELS = p_pic->Y_PIXELS
1667               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1668             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1669             p_pic->p[U_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1670             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1671             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1672             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1673               p_pic->p[U_PLANE].i_pixel_pitch;
1674
1675             p_pic->V_PIXELS =  p_pic->U_PIXELS
1676               + p_pic->p[U_PLANE].i_lines * p_pic->p[U_PLANE].i_pitch;
1677             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1678             p_pic->p[V_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1679             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1680             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1681             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1682               p_pic->p[V_PLANE].i_pixel_pitch;
1683
1684             p_pic->i_planes = 3;
1685             break;
1686
1687         case VLC_FOURCC('U','Y','V','Y'):
1688         case VLC_FOURCC('Y','U','Y','2'):
1689
1690             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1691             p_pic->p->i_lines = p_vout->output.i_height;
1692             p_pic->p->i_visible_lines = p_vout->output.i_height;
1693             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1694             p_pic->p->i_pixel_pitch = 2;
1695             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1696               p_pic->p->i_pixel_pitch;
1697
1698             p_pic->i_planes = 1;
1699             break;
1700
1701         default:
1702             /* Unknown chroma, tell the guy to get lost */
1703             msg_Err( p_vout, "never heard of chroma 0x%.8x (%4.4s)",
1704                      p_vout->output.i_chroma,
1705                      (char*)&p_vout->output.i_chroma );
1706             return VLC_EGENERIC;
1707     }
1708
1709     return VLC_SUCCESS;
1710 }
1711
1712 /*****************************************************************************
1713  * DirectXGetDDrawCaps: Probe the capabilities of the hardware
1714  *****************************************************************************
1715  * It is nice to know which features are supported by the hardware so we can
1716  * find ways to optimize our rendering.
1717  *****************************************************************************/
1718 static void DirectXGetDDrawCaps( vout_thread_t *p_vout )
1719 {
1720     DDCAPS ddcaps;
1721     HRESULT dxresult;
1722
1723     /* This is just an indication of whether or not we'll support overlay,
1724      * but with this test we don't know if we support YUV overlay */
1725     memset( &ddcaps, 0, sizeof( DDCAPS ));
1726     ddcaps.dwSize = sizeof(DDCAPS);
1727     dxresult = IDirectDraw2_GetCaps( p_vout->p_sys->p_ddobject,
1728                                      &ddcaps, NULL );
1729     if(dxresult != DD_OK )
1730     {
1731         msg_Warn( p_vout, "cannot get caps" );
1732     }
1733     else
1734     {
1735         vlc_bool_t bHasOverlay, bHasOverlayFourCC, bCanDeinterlace,
1736              bHasColorKey, bCanStretch, bCanBltFourcc,
1737              bAlignBoundarySrc, bAlignBoundaryDest,
1738              bAlignSizeSrc, bAlignSizeDest;
1739
1740         /* Determine if the hardware supports overlay surfaces */
1741         bHasOverlay = (ddcaps.dwCaps & DDCAPS_OVERLAY) ? 1 : 0;
1742         /* Determine if the hardware supports overlay surfaces */
1743         bHasOverlayFourCC = (ddcaps.dwCaps & DDCAPS_OVERLAYFOURCC) ? 1 : 0;
1744         /* Determine if the hardware supports overlay deinterlacing */
1745         bCanDeinterlace = (ddcaps.dwCaps & DDCAPS2_CANFLIPODDEVEN) ? 1 : 0;
1746         /* Determine if the hardware supports colorkeying */
1747         bHasColorKey = (ddcaps.dwCaps & DDCAPS_COLORKEY) ? 1 : 0;
1748         /* Determine if the hardware supports scaling of the overlay surface */
1749         bCanStretch = (ddcaps.dwCaps & DDCAPS_OVERLAYSTRETCH) ? 1 : 0;
1750         /* Determine if the hardware supports color conversion during a blit */
1751         bCanBltFourcc = (ddcaps.dwCaps & DDCAPS_BLTFOURCC) ? 1 : 0;
1752         /* Determine overlay source boundary alignment */
1753         bAlignBoundarySrc = (ddcaps.dwCaps & DDCAPS_ALIGNBOUNDARYSRC) ? 1 : 0;
1754         /* Determine overlay destination boundary alignment */
1755         bAlignBoundaryDest = (ddcaps.dwCaps & DDCAPS_ALIGNBOUNDARYDEST) ? 1:0;
1756         /* Determine overlay destination size alignment */
1757         bAlignSizeSrc = (ddcaps.dwCaps & DDCAPS_ALIGNSIZESRC) ? 1 : 0;
1758         /* Determine overlay destination size alignment */
1759         bAlignSizeDest = (ddcaps.dwCaps & DDCAPS_ALIGNSIZEDEST) ? 1 : 0;
1760
1761         msg_Dbg( p_vout, "DirectDraw Capabilities: overlay=%i yuvoverlay=%i "
1762                          "can_deinterlace_overlay=%i colorkey=%i stretch=%i "
1763                          "bltfourcc=%i",
1764                          bHasOverlay, bHasOverlayFourCC, bCanDeinterlace,
1765                          bHasColorKey, bCanStretch, bCanBltFourcc );
1766
1767         if( bAlignBoundarySrc || bAlignBoundaryDest ||
1768             bAlignSizeSrc || bAlignSizeDest )
1769         {
1770             if( bAlignBoundarySrc ) p_vout->p_sys->i_align_src_boundary =
1771                 ddcaps.dwAlignBoundarySrc;
1772             if( bAlignBoundaryDest ) p_vout->p_sys->i_align_dest_boundary =
1773                 ddcaps.dwAlignBoundaryDest;
1774             if( bAlignSizeDest ) p_vout->p_sys->i_align_src_size =
1775                 ddcaps.dwAlignSizeSrc;
1776             if( bAlignSizeDest ) p_vout->p_sys->i_align_dest_size =
1777                 ddcaps.dwAlignSizeDest;
1778
1779             msg_Dbg( p_vout, "align_boundary_src=%i,%i "
1780                      "align_boundary_dest=%i,%i "
1781                      "align_size_src=%i,%i align_size_dest=%i,%i",
1782                      bAlignBoundarySrc, p_vout->p_sys->i_align_src_boundary,
1783                      bAlignBoundaryDest, p_vout->p_sys->i_align_dest_boundary,
1784                      bAlignSizeSrc, p_vout->p_sys->i_align_src_size,
1785                      bAlignSizeDest, p_vout->p_sys->i_align_dest_size );
1786         }
1787
1788         /* Don't ask for troubles */
1789         if( !bCanBltFourcc ) p_vout->p_sys->b_hw_yuv = FALSE;
1790     }
1791 }
1792
1793 /*****************************************************************************
1794  * DirectXLockSurface: Lock surface and get picture data pointer
1795  *****************************************************************************
1796  * This function locks a surface and get the surface descriptor which amongst
1797  * other things has the pointer to the picture data.
1798  *****************************************************************************/
1799 static int DirectXLockSurface( vout_thread_t *p_vout, picture_t *p_pic )
1800 {
1801     HRESULT dxresult;
1802
1803     /* Lock the surface to get a valid pointer to the picture buffer */
1804     memset( &p_pic->p_sys->ddsd, 0, sizeof( DDSURFACEDESC ));
1805     p_pic->p_sys->ddsd.dwSize = sizeof(DDSURFACEDESC);
1806     dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface,
1807                                          NULL, &p_pic->p_sys->ddsd,
1808                                          DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1809                                          NULL );
1810     if( dxresult != DD_OK )
1811     {
1812         if( dxresult == DDERR_INVALIDPARAMS )
1813         {
1814             /* DirectX 3 doesn't support the DDLOCK_NOSYSLOCK flag, resulting
1815              * in an invalid params error */
1816             dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1817                                              &p_pic->p_sys->ddsd,
1818                                              DDLOCK_WAIT, NULL);
1819         }
1820         if( dxresult == DDERR_SURFACELOST )
1821         {
1822             /* Your surface can be lost so be sure
1823              * to check this and restore it if needed */
1824
1825             /* When using overlays with back-buffers, we need to restore
1826              * the front buffer so the back-buffers get restored as well. */
1827             if( p_vout->p_sys->b_using_overlay  )
1828                 IDirectDrawSurface2_Restore( p_pic->p_sys->p_front_surface );
1829             else
1830                 IDirectDrawSurface2_Restore( p_pic->p_sys->p_surface );
1831
1832             dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1833                                                  &p_pic->p_sys->ddsd,
1834                                                  DDLOCK_WAIT, NULL);
1835             if( dxresult == DDERR_SURFACELOST )
1836                 msg_Dbg( p_vout, "DirectXLockSurface: DDERR_SURFACELOST" );
1837         }
1838         if( dxresult != DD_OK )
1839         {
1840             return VLC_EGENERIC;
1841         }
1842     }
1843
1844     /* Now we have a pointer to the surface memory, we can update our picture
1845      * structure. */
1846     if( UpdatePictureStruct( p_vout, p_pic, p_vout->output.i_chroma )
1847         != VLC_SUCCESS )
1848     {
1849         DirectXUnlockSurface( p_vout, p_pic );
1850         return VLC_EGENERIC;
1851     }
1852     else
1853         return VLC_SUCCESS;
1854 }
1855
1856 /*****************************************************************************
1857  * DirectXUnlockSurface: Unlock a surface locked by DirectXLockSurface().
1858  *****************************************************************************/
1859 static int DirectXUnlockSurface( vout_thread_t *p_vout, picture_t *p_pic )
1860 {
1861     /* Unlock the Surface */
1862     if( IDirectDrawSurface2_Unlock( p_pic->p_sys->p_surface, NULL ) == DD_OK )
1863         return VLC_SUCCESS;
1864     else
1865         return VLC_EGENERIC;
1866 }
1867
1868 /*****************************************************************************
1869  * DirectXFindColorkey: Finds out the 32bits RGB pixel value of the colorkey
1870  *****************************************************************************/
1871 static DWORD DirectXFindColorkey( vout_thread_t *p_vout, uint32_t i_color )
1872 {
1873     DDSURFACEDESC ddsd;
1874     HRESULT dxresult;
1875     COLORREF i_rgb = 0;
1876     uint32_t i_pixel_backup;
1877     HDC hdc;
1878
1879     ddsd.dwSize = sizeof(ddsd);
1880     dxresult = IDirectDrawSurface2_Lock( p_vout->p_sys->p_display, NULL,
1881                                          &ddsd, DDLOCK_WAIT, NULL );
1882     if( dxresult != DD_OK ) return 0;
1883
1884     i_pixel_backup = *(uint32_t *)ddsd.lpSurface;
1885
1886     switch( ddsd.ddpfPixelFormat.dwRGBBitCount )
1887     {
1888     case 4:
1889         *(uint8_t *)ddsd.lpSurface = 0x11;
1890         break;
1891     case 8:
1892         *(uint8_t *)ddsd.lpSurface = 0x01;
1893         break;
1894     case 16:
1895         *(uint16_t *)ddsd.lpSurface = 0x01;
1896         break;
1897     default:
1898         *(uint32_t *)ddsd.lpSurface = 0x01;
1899         break;
1900     }
1901
1902     IDirectDrawSurface2_Unlock( p_vout->p_sys->p_display, NULL );
1903
1904     if( IDirectDrawSurface2_GetDC( p_vout->p_sys->p_display, &hdc ) == DD_OK )
1905     {
1906         i_rgb = GetPixel( hdc, 0, 0 );
1907         IDirectDrawSurface2_ReleaseDC( p_vout->p_sys->p_display, hdc );
1908     }
1909
1910     ddsd.dwSize = sizeof(ddsd);
1911     dxresult = IDirectDrawSurface2_Lock( p_vout->p_sys->p_display, NULL,
1912                                          &ddsd, DDLOCK_WAIT, NULL );
1913     if( dxresult != DD_OK ) return i_rgb;
1914
1915     *(uint32_t *)ddsd.lpSurface = i_pixel_backup;
1916
1917     IDirectDrawSurface2_Unlock( p_vout->p_sys->p_display, NULL );
1918
1919     return i_rgb;
1920 }
1921
1922 /*****************************************************************************
1923  * A few toolbox functions
1924  *****************************************************************************/
1925 void SwitchWallpaperMode( vout_thread_t *p_vout, vlc_bool_t b_on )
1926 {
1927     HWND hwnd;
1928
1929     if( p_vout->p_sys->b_wallpaper == b_on ) return; /* Nothing to do */
1930
1931     hwnd = FindWindow( "Progman", NULL );
1932     if( hwnd ) hwnd = FindWindowEx( hwnd, NULL, "SHELLDLL_DefView", NULL );
1933     if( hwnd ) hwnd = FindWindowEx( hwnd, NULL, "SysListView32", NULL );
1934     if( !hwnd )
1935     {
1936         msg_Warn( p_vout, "couldn't find \"SysListView32\" window, "
1937                   "wallpaper mode not supported" );
1938         return;
1939     }
1940
1941     p_vout->p_sys->b_wallpaper = b_on;
1942
1943     msg_Dbg( p_vout, "wallpaper mode %s", b_on ? "enabled" : "disabled" );
1944
1945     if( p_vout->p_sys->b_wallpaper )
1946     {
1947         p_vout->p_sys->color_bkg = ListView_GetBkColor( hwnd );
1948         p_vout->p_sys->color_bkgtxt = ListView_GetTextBkColor( hwnd );
1949
1950         ListView_SetBkColor( hwnd, p_vout->p_sys->i_rgb_colorkey );
1951         ListView_SetTextBkColor( hwnd, p_vout->p_sys->i_rgb_colorkey );
1952     }
1953     else if( hwnd )
1954     {
1955         ListView_SetBkColor( hwnd, p_vout->p_sys->color_bkg );
1956         ListView_SetTextBkColor( hwnd, p_vout->p_sys->color_bkgtxt );
1957     }
1958
1959     /* Update desktop */
1960     InvalidateRect( hwnd, NULL, TRUE );
1961     UpdateWindow( hwnd );
1962 }
1963
1964 /*****************************************************************************
1965  * config variable callback
1966  *****************************************************************************/
1967 BOOL WINAPI DirectXEnumCallback2( GUID* p_guid, LPTSTR psz_desc,
1968                                   LPTSTR psz_drivername, VOID* p_context,
1969                                   HMONITOR hmon )
1970 {
1971     module_config_t *p_item = (module_config_t *)p_context;
1972
1973     p_item->ppsz_list =
1974         (char **)realloc( p_item->ppsz_list,
1975                           (p_item->i_list+2) * sizeof(char *) );
1976     p_item->ppsz_list_text =
1977         (char **)realloc( p_item->ppsz_list_text,
1978                           (p_item->i_list+2) * sizeof(char *) );
1979
1980     p_item->ppsz_list[p_item->i_list] = strdup( psz_drivername );
1981     p_item->ppsz_list_text[p_item->i_list] = NULL;
1982     p_item->i_list++;
1983     p_item->ppsz_list[p_item->i_list] = NULL;
1984     p_item->ppsz_list_text[p_item->i_list] = NULL;
1985
1986     return TRUE; /* Keep enumerating */
1987 }
1988
1989 static int FindDevicesCallback( vlc_object_t *p_this, char const *psz_name,
1990                                vlc_value_t newval, vlc_value_t oldval, void *d)
1991 {
1992     HRESULT (WINAPI *OurDirectDrawEnumerateEx)( LPDDENUMCALLBACKEXA, LPVOID,
1993                                                 DWORD );
1994     HINSTANCE hddraw_dll;
1995
1996     module_config_t *p_item;
1997     int i;
1998
1999     p_item = config_FindConfig( p_this, psz_name );
2000     if( !p_item ) return VLC_SUCCESS;
2001
2002     /* Clear-up the current list */
2003     if( p_item->i_list )
2004     {
2005         /* Keep the first entry */
2006         for( i = 1; i < p_item->i_list; i++ )
2007         {
2008             free( p_item->ppsz_list[i] );
2009             free( p_item->ppsz_list_text[i] );
2010         }
2011         /* TODO: Remove when no more needed */
2012         p_item->ppsz_list[i] = NULL;
2013         p_item->ppsz_list_text[i] = NULL;
2014     }
2015     p_item->i_list = 1;
2016
2017     /* Load direct draw DLL */
2018     hddraw_dll = LoadLibrary("DDRAW.DLL");
2019     if( hddraw_dll == NULL ) return VLC_SUCCESS;
2020
2021     OurDirectDrawEnumerateEx =
2022       (void *)GetProcAddress( hddraw_dll, "DirectDrawEnumerateExA" );
2023
2024     if( OurDirectDrawEnumerateEx )
2025     {
2026         /* Enumerate displays */
2027         OurDirectDrawEnumerateEx( DirectXEnumCallback2, p_item,
2028                                   DDENUM_ATTACHEDSECONDARYDEVICES );
2029     }
2030
2031     FreeLibrary( hddraw_dll );
2032
2033     /* Signal change to the interface */
2034     p_item->b_dirty = VLC_TRUE;
2035
2036     return VLC_SUCCESS;
2037 }
2038
2039 static int WallpaperCallback( vlc_object_t *p_this, char const *psz_cmd,
2040                               vlc_value_t oldval, vlc_value_t newval,
2041                               void *p_data )
2042 {
2043     vout_thread_t *p_vout = (vout_thread_t *)p_this;
2044
2045     if( (newval.b_bool && !p_vout->p_sys->b_wallpaper) ||
2046         (!newval.b_bool && p_vout->p_sys->b_wallpaper) )
2047     {
2048         playlist_t *p_playlist;
2049
2050         p_playlist =
2051             (playlist_t *)vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
2052                                            FIND_PARENT );
2053         if( p_playlist )
2054         {
2055             /* Modify playlist as well because the vout might have to be
2056              * restarted */
2057             var_Create( p_playlist, "directx-wallpaper", VLC_VAR_BOOL );
2058             var_Set( p_playlist, "directx-wallpaper", newval );
2059
2060             vlc_object_release( p_playlist );
2061         }
2062
2063         p_vout->p_sys->i_changes |= DX_WALLPAPER_CHANGE;
2064     }
2065
2066     return VLC_SUCCESS;
2067 }