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 VideoLAN
   5  * $Id: directx.c,v 1.30 2003/12/23 02:11:27 gbazin Exp $
   6  *
   7  * Authors: Gildas Bazin <gbazin@netcourrier.com>
   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
  48 #include <multimon.h>
  49 #undef GetSystemMetrics
  50
  51 #ifndef MONITOR_DEFAULTTONEAREST
  52 #   define MONITOR_DEFAULTTONEAREST 2
  53 #endif
  54
  55 #include "vout.h"
  56
  57 /*****************************************************************************
  58  * DirectDraw GUIDs.
  59  * Defining them here allows us to get rid of the dxguid library during
  60  * the linking stage.
  61  *****************************************************************************/
  62 #include <initguid.h>
  63 DEFINE_GUID( IID_IDirectDraw2, 0xB3A6F3E0,0x2B43,0x11CF,0xA2,0xDE,0x00,0xAA,0x00,0xB9,0x33,0x56 );
  64 DEFINE_GUID( IID_IDirectDrawSurface2, 0x57805885,0x6eec,0x11cf,0x94,0x41,0xa8,0x23,0x03,0xc1,0x0e,0x27 );
  65
  66 /*****************************************************************************
  67  * Local prototypes.
  68  *****************************************************************************/
  69 static int  OpenVideo  ( vlc_object_t * );
  70 static void CloseVideo ( vlc_object_t * );
  71
  72 static int  Init      ( vout_thread_t * );
  73 static void End       ( vout_thread_t * );
  74 static int  Manage    ( vout_thread_t * );
  75 static void Display   ( vout_thread_t *, picture_t * );
  76
  77 static int  NewPictureVec  ( vout_thread_t *, picture_t *, int );
  78 static void FreePictureVec ( vout_thread_t *, picture_t *, int );
  79 static int  UpdatePictureStruct( vout_thread_t *, picture_t *, int );
  80
  81 static int  DirectXInitDDraw      ( vout_thread_t *p_vout );
  82 static void DirectXCloseDDraw     ( vout_thread_t *p_vout );
  83 static int  DirectXCreateDisplay  ( vout_thread_t *p_vout );
  84 static void DirectXCloseDisplay   ( vout_thread_t *p_vout );
  85 static int  DirectXCreateSurface  ( vout_thread_t *p_vout,
  86                                     LPDIRECTDRAWSURFACE2 *, int, int, int );
  87 static void DirectXCloseSurface   ( vout_thread_t *p_vout,
  88                                     LPDIRECTDRAWSURFACE2 );
  89 static int  DirectXCreateClipper  ( vout_thread_t *p_vout );
  90 static void DirectXGetDDrawCaps   ( vout_thread_t *p_vout );
  91 static int  DirectXLockSurface    ( vout_thread_t *p_vout, picture_t *p_pic );
  92 static int  DirectXUnlockSurface  ( vout_thread_t *p_vout, picture_t *p_pic );
  93
  94 static DWORD DirectXFindColorkey( vout_thread_t *p_vout, uint32_t i_color );
  95
  96 /* Object variables callbacks */
  97 static int OnTopCallback( vlc_object_t *, char const *,
  98                           vlc_value_t, vlc_value_t, void * );
  99
 100 /*****************************************************************************
 101  * Module descriptor
 102  *****************************************************************************/
 103 #define HW_YUV_TEXT N_("Use hardware YUV->RGB conversions")
 104 #define HW_YUV_LONGTEXT N_( \
 105     "Try to use hardware acceleration for YUV->RGB conversions. " \
 106     "This option doesn't have any effect when using overlays." )
 107 #define SYSMEM_TEXT N_("Use video buffers in system memory")
 108 #define SYSMEM_LONGTEXT N_( \
 109     "Create video buffers in system memory instead of video memory. This " \
 110     "isn't recommended as usually using video memory allows to benefit from " \
 111     "more hardware acceleration (like rescaling or YUV->RGB conversions). " \
 112     "This option doesn't have any effect when using overlays." )
 113 #define TRIPLEBUF_TEXT N_("Use triple buffering for overlays")
 114 #define TRIPLEBUF_LONGTEXT N_( \
 115     "Try to use triple bufferring when using YUV overlays. That results in " \
 116     "much better video quality (no flickering)." )
 117
 118 vlc_module_begin();
 119     add_category_hint( N_("Video"), NULL, VLC_FALSE );
 120     add_bool( "directx-hw-yuv", 1, NULL, HW_YUV_TEXT, HW_YUV_LONGTEXT, VLC_TRUE );
 121     add_bool( "directx-use-sysmem", 0, NULL, SYSMEM_TEXT, SYSMEM_LONGTEXT, VLC_TRUE );
 122     add_bool( "directx-3buffering", 1, NULL, TRIPLEBUF_TEXT, TRIPLEBUF_LONGTEXT, VLC_TRUE );
 123     set_description( _("DirectX video output") );
 124     set_capability( "video output", 100 );
 125     add_shortcut( "directx" );
 126     set_callbacks( OpenVideo, CloseVideo );
 127 vlc_module_end();
 128
 129 #if 0 /* FIXME */
 130     /* check if we registered a window class because we need to
 131      * unregister it */
 132     WNDCLASS wndclass;
 133     if( GetClassInfo( GetModuleHandle(NULL), "VLC DirectX", &wndclass ) )
 134         UnregisterClass( "VLC DirectX", GetModuleHandle(NULL) );
 135 #endif
 136
 137 /*****************************************************************************
 138  * OpenVideo: allocate DirectX video thread output method
 139  *****************************************************************************
 140  * This function allocates and initialize the DirectX vout method.
 141  *****************************************************************************/
 142 static int OpenVideo( vlc_object_t *p_this )
 143 {
 144     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 145     vlc_value_t val, text;
 146     HMODULE huser32;
 147
 148     /* Allocate structure */
 149     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 150     if( p_vout->p_sys == NULL )
 151     {
 152         msg_Err( p_vout, "out of memory" );
 153         return VLC_ENOMEM;
 154     }
 155
 156     /* Initialisations */
 157     p_vout->pf_init = Init;
 158     p_vout->pf_end = End;
 159     p_vout->pf_manage = Manage;
 160     p_vout->pf_render = NULL;
 161     p_vout->pf_display = Display;
 162
 163     p_vout->p_sys->p_ddobject = NULL;
 164     p_vout->p_sys->p_display = NULL;
 165     p_vout->p_sys->p_current_surface = NULL;
 166     p_vout->p_sys->p_clipper = NULL;
 167     p_vout->p_sys->hwnd = NULL;
 168     p_vout->p_sys->hparent = NULL;
 169     p_vout->p_sys->i_changes = 0;
 170
 171     /* Multimonitor stuff */
 172     p_vout->p_sys->hmonitor = NULL;
 173     p_vout->p_sys->p_display_driver = NULL;
 174     p_vout->p_sys->MonitorFromWindow = NULL;
 175     p_vout->p_sys->GetMonitorInfo = NULL;
 176     if( (huser32 = GetModuleHandle( "USER32" ) ) )
 177     {
 178         p_vout->p_sys->MonitorFromWindow =
 179             GetProcAddress( huser32, "MonitorFromWindow" );
 180         p_vout->p_sys->GetMonitorInfo =
 181             GetProcAddress( huser32, "GetMonitorInfoA" );
 182     }
 183
 184     var_Create( p_vout, "overlay", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 185     var_Create( p_vout, "directx-use-sysmem", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 186     var_Create( p_vout, "directx-hw-yuv", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 187     var_Create( p_vout, "directx-3buffering", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 188
 189     p_vout->p_sys->b_cursor_hidden = 0;
 190     p_vout->p_sys->i_lastmoved = mdate();
 191
 192     /* Set main window's size */
 193     p_vout->p_sys->i_window_width = p_vout->i_window_width;
 194     p_vout->p_sys->i_window_height = p_vout->i_window_height;
 195
 196     /* Create the DirectXEventThread, this thread is created by us to isolate
 197      * the Win32 PeekMessage function calls. We want to do this because
 198      * Windows can stay blocked inside this call for a long time, and when
 199      * this happens it thus blocks vlc's video_output thread.
 200      * DirectXEventThread will take care of the creation of the video
 201      * window (because PeekMessage has to be called from the same thread which
 202      * created the window). */
 203     msg_Dbg( p_vout, "creating DirectXEventThread" );
 204     p_vout->p_sys->p_event =
 205         vlc_object_create( p_vout, sizeof(event_thread_t) );
 206     p_vout->p_sys->p_event->p_vout = p_vout;
 207     if( vlc_thread_create( p_vout->p_sys->p_event, "DirectX Events Thread",
 208                            DirectXEventThread, 0, 1 ) )
 209     {
 210         msg_Err( p_vout, "cannot create DirectXEventThread" );
 211         vlc_object_destroy( p_vout->p_sys->p_event );
 212         p_vout->p_sys->p_event = NULL;
 213         goto error;
 214     }
 215
 216     if( p_vout->p_sys->p_event->b_error )
 217     {
 218         msg_Err( p_vout, "DirectXEventThread failed" );
 219         goto error;
 220     }
 221
 222     vlc_object_attach( p_vout->p_sys->p_event, p_vout );
 223
 224     msg_Dbg( p_vout, "DirectXEventThread running" );
 225
 226     /* Initialise DirectDraw */
 227     if( DirectXInitDDraw( p_vout ) )
 228     {
 229         msg_Err( p_vout, "cannot initialize DirectDraw" );
 230         goto error;
 231     }
 232
 233     /* Create the directx display */
 234     if( DirectXCreateDisplay( p_vout ) )
 235     {
 236         msg_Err( p_vout, "cannot initialize DirectDraw" );
 237         goto error;
 238     }
 239
 240     /* Add a variable to indicate if the window should be on top of others */
 241     var_Create( p_vout, "video-on-top", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 242     text.psz_string = _("Always on top");
 243     var_Change( p_vout, "video-on-top", VLC_VAR_SETTEXT, &text, NULL );
 244     var_Get( p_vout, "video-on-top", &val );
 245     p_vout->p_sys->b_on_top_change = val.b_bool;
 246     var_AddCallback( p_vout, "video-on-top", OnTopCallback, NULL );
 247
 248     return VLC_SUCCESS;
 249
 250  error:
 251     CloseVideo( VLC_OBJECT(p_vout) );
 252     return VLC_EGENERIC;
 253 }
 254
 255 /*****************************************************************************
 256  * Init: initialize DirectX video thread output method
 257  *****************************************************************************
 258  * This function create the directx surfaces needed by the output thread.
 259  * It is called at the beginning of the thread.
 260  *****************************************************************************/
 261 static int Init( vout_thread_t *p_vout )
 262 {
 263     int i_chroma_backup;
 264     vlc_value_t val;
 265
 266     /* Get a few default parameters */
 267     var_Get( p_vout, "overlay", &val );
 268     p_vout->p_sys->b_using_overlay = val.b_bool;
 269     var_Get( p_vout, "directx-use-sysmem", &val );
 270     p_vout->p_sys->b_use_sysmem = val.b_bool;
 271     var_Get( p_vout, "directx-hw-yuv", &val );
 272     p_vout->p_sys->b_hw_yuv = val.b_bool;
 273     var_Get( p_vout, "directx-3buffering", &val );
 274     p_vout->p_sys->b_3buf_overlay = val.b_bool;
 275
 276     /* Initialise DirectDraw if not already done.
 277      * We do this here because on multi-monitor systems we may have to
 278      * re-create the directdraw surfaces. */
 279     if( !p_vout->p_sys->p_ddobject &&
 280         DirectXInitDDraw( p_vout ) != VLC_SUCCESS )
 281     {
 282         msg_Err( p_vout, "cannot initialize DirectDraw" );
 283         return VLC_EGENERIC;
 284     }
 285
 286     /* Create the directx display */
 287     if( !p_vout->p_sys->p_display &&
 288         DirectXCreateDisplay( p_vout ) != VLC_SUCCESS )
 289     {
 290         msg_Err( p_vout, "cannot initialize DirectDraw" );
 291         return VLC_EGENERIC;
 292     }
 293
 294     /* Initialize the output structure.
 295      * Since DirectDraw can do rescaling for us, stick to the default
 296      * coordinates and aspect. */
 297     p_vout->output.i_width  = p_vout->render.i_width;
 298     p_vout->output.i_height = p_vout->render.i_height;
 299     p_vout->output.i_aspect = p_vout->render.i_aspect;
 300
 301 #define MAX_DIRECTBUFFERS 1
 302     /* Right now we use only 1 directbuffer because we don't want the
 303      * video decoder to decode directly into direct buffers as they are
 304      * created into video memory and video memory is _really_ slow */
 305
 306     /* Choose the chroma we will try first. */
 307     switch( p_vout->render.i_chroma )
 308     {
 309         case VLC_FOURCC('Y','U','Y','2'):
 310         case VLC_FOURCC('Y','U','N','V'):
 311             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 312             break;
 313         case VLC_FOURCC('U','Y','V','Y'):
 314         case VLC_FOURCC('U','Y','N','V'):
 315         case VLC_FOURCC('Y','4','2','2'):
 316             p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
 317             break;
 318         case VLC_FOURCC('Y','V','Y','U'):
 319             p_vout->output.i_chroma = VLC_FOURCC('Y','V','Y','U');
 320             break;
 321         default:
 322             p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 323             break;
 324     }
 325
 326     NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 327
 328     i_chroma_backup = p_vout->output.i_chroma;
 329
 330     if( !I_OUTPUTPICTURES )
 331     {
 332         /* hmmm, it didn't work! Let's try commonly supported chromas */
 333         if( p_vout->output.i_chroma != VLC_FOURCC('Y','V','1','2') )
 334         {
 335             p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 336             NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 337         }
 338         if( !I_OUTPUTPICTURES )
 339         {
 340             /* hmmm, it still didn't work! Let's try another one */
 341             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 342             NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 343         }
 344     }
 345
 346     if( !I_OUTPUTPICTURES )
 347     {
 348         /* If it still didn't work then don't try to use an overlay */
 349         p_vout->output.i_chroma = i_chroma_backup;
 350         p_vout->p_sys->b_using_overlay = 0;
 351         NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 352     }
 353
 354     /* Change the window title bar text */
 355     if( p_vout->p_sys->hparent ) ; /* Do nothing */
 356     else PostMessage( p_vout->p_sys->hwnd, WM_VLC_CHANGE_TEXT, 0, 0 );
 357
 358     return VLC_SUCCESS;
 359 }
 360
 361 /*****************************************************************************
 362  * End: terminate Sys video thread output method
 363  *****************************************************************************
 364  * Terminate an output method created by Create.
 365  * It is called at the end of the thread.
 366  *****************************************************************************/
 367 static void End( vout_thread_t *p_vout )
 368 {
 369     FreePictureVec( p_vout, p_vout->p_picture, I_OUTPUTPICTURES );
 370
 371     DirectXCloseDisplay( p_vout );
 372     DirectXCloseDDraw( p_vout );
 373
 374     return;
 375 }
 376
 377 /*****************************************************************************
 378  * CloseVideo: destroy Sys video thread output method
 379  *****************************************************************************
 380  * Terminate an output method created by Create
 381  *****************************************************************************/
 382 static void CloseVideo( vlc_object_t *p_this )
 383 {
 384     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 385
 386     msg_Dbg( p_vout, "CloseVideo" );
 387
 388     var_Destroy( p_vout, "video-on-top" );
 389
 390     if( p_vout->p_sys->p_event )
 391     {
 392         vlc_object_detach( p_vout->p_sys->p_event );
 393
 394         /* Kill DirectXEventThread */
 395         p_vout->p_sys->p_event->b_die = VLC_TRUE;
 396
 397         /* we need to be sure DirectXEventThread won't stay stuck in
 398          * GetMessage, so we send a fake message */
 399         if( p_vout->p_sys->hwnd )
 400         {
 401             PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0);
 402         }
 403
 404         vlc_thread_join( p_vout->p_sys->p_event );
 405         vlc_object_destroy( p_vout->p_sys->p_event );
 406     }
 407
 408     if( p_vout->p_sys )
 409     {
 410         free( p_vout->p_sys );
 411         p_vout->p_sys = NULL;
 412     }
 413 }
 414
 415 /*****************************************************************************
 416  * Manage: handle Sys events
 417  *****************************************************************************
 418  * This function should be called regularly by the video output thread.
 419  * It returns a non null value if an error occured.
 420  *****************************************************************************/
 421 static int Manage( vout_thread_t *p_vout )
 422 {
 423     WINDOWPLACEMENT window_placement;
 424
 425     /* If we do not control our window, we check for geometry changes
 426      * ourselves because the parent might not send us its events. */
 427     if( p_vout->p_sys->hparent )
 428     {
 429         DirectXUpdateRects( p_vout, VLC_FALSE );
 430     }
 431
 432     /*
 433      * Position Change
 434      */
 435     if( p_vout->p_sys->i_changes & DX_POSITION_CHANGE )
 436     {
 437         if( p_vout->p_sys->b_using_overlay )
 438             DirectXUpdateOverlay( p_vout );
 439
 440         /* Check if we are still on the same monitor */
 441         if( p_vout->p_sys->MonitorFromWindow &&
 442             p_vout->p_sys->hmonitor !=
 443                 p_vout->p_sys->MonitorFromWindow( p_vout->p_sys->hwnd,
 444                                                   MONITOR_DEFAULTTONEAREST ) )
 445         {
 446             /* This will force the vout core to recreate the picture buffers */
 447             p_vout->i_changes |= VOUT_PICTURE_BUFFERS_CHANGE;
 448         }
 449
 450         p_vout->p_sys->i_changes &= ~DX_POSITION_CHANGE;
 451     }
 452
 453     /* We used to call the Win32 PeekMessage function here to read the window
 454      * messages. But since window can stay blocked into this function for a
 455      * long time (for example when you move your window on the screen), I
 456      * decided to isolate PeekMessage in another thread. */
 457
 458     /*
 459      * Fullscreen change
 460      */
 461     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
 462         || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
 463     {
 464         vlc_value_t val;
 465
 466         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 467
 468         /* We need to switch between Maximized and Normal sized window */
 469         window_placement.length = sizeof(WINDOWPLACEMENT);
 470         GetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 471         if( p_vout->b_fullscreen )
 472         {
 473             /* Maximized window */
 474             window_placement.showCmd = SW_SHOWMAXIMIZED;
 475             /* Change window style, no borders and no title bar */
 476             SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE, WS_CLIPCHILDREN );
 477
 478         }
 479         else
 480         {
 481             /* Normal window */
 482             window_placement.showCmd = SW_SHOWNORMAL;
 483             /* Change window style, borders and title bar */
 484             SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE, WS_CLIPCHILDREN |
 485                            WS_OVERLAPPEDWINDOW | WS_SIZEBOX | WS_VISIBLE );
 486         }
 487
 488         SetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 489
 490         /* Update the object variable and trigger callback */
 491         val.b_bool = p_vout->b_fullscreen;
 492         var_Set( p_vout, "fullscreen", val );
 493
 494         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 495         p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 496     }
 497
 498     /*
 499      * Pointer change
 500      */
 501     if( (!p_vout->p_sys->b_cursor_hidden) &&
 502         ( (mdate() - p_vout->p_sys->i_lastmoved) > 5000000 ) )
 503     {
 504         /* Hide the mouse automatically */
 505         if( p_vout->p_sys->hwnd != p_vout->p_sys->hparent )
 506         {
 507             p_vout->p_sys->b_cursor_hidden = VLC_TRUE;
 508             PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
 509         }
 510     }
 511
 512     /*
 513      * "Always on top" status change
 514      */
 515     if( p_vout->p_sys->b_on_top_change )
 516     {
 517         vlc_value_t val;
 518         HMENU hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );
 519
 520         var_Get( p_vout, "video-on-top", &val );
 521
 522         /* Set the window on top if necessary */
 523         if( val.b_bool && !( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
 524                            & WS_EX_TOPMOST ) )
 525         {
 526             CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
 527                            MF_BYCOMMAND | MFS_CHECKED );
 528             SetWindowPos( p_vout->p_sys->hwnd, HWND_TOPMOST, 0, 0, 0, 0,
 529                           SWP_NOSIZE | SWP_NOMOVE );
 530         }
 531         else
 532         /* The window shouldn't be on top */
 533         if( !val.b_bool && ( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
 534                            & WS_EX_TOPMOST ) )
 535         {
 536             CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
 537                            MF_BYCOMMAND | MFS_UNCHECKED );
 538             SetWindowPos( p_vout->p_sys->hwnd, HWND_NOTOPMOST, 0, 0, 0, 0,
 539                           SWP_NOSIZE | SWP_NOMOVE );
 540         }
 541
 542         p_vout->p_sys->b_on_top_change = VLC_FALSE;
 543     }
 544
 545     /* Check if the event thread is still running */
 546     if( p_vout->p_sys->p_event->b_die )
 547     {
 548         return VLC_EGENERIC; /* exit */
 549     }
 550
 551     return VLC_SUCCESS;
 552 }
 553
 554 /*****************************************************************************
 555  * Display: displays previously rendered output
 556  *****************************************************************************
 557  * This function sends the currently rendered image to the display, wait until
 558  * it is displayed and switch the two rendering buffers, preparing next frame.
 559  *****************************************************************************/
 560 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 561 {
 562     HRESULT dxresult;
 563
 564     if( (p_vout->p_sys->p_display == NULL) )
 565     {
 566         msg_Warn( p_vout, "no display!!" );
 567         return;
 568     }
 569
 570     /* Our surface can be lost so be sure to check this
 571      * and restore it if need be */
 572     if( IDirectDrawSurface2_IsLost( p_vout->p_sys->p_display )
 573         == DDERR_SURFACELOST )
 574     {
 575         if( IDirectDrawSurface2_Restore( p_vout->p_sys->p_display ) == DD_OK &&
 576             p_vout->p_sys->b_using_overlay )
 577             DirectXUpdateOverlay( p_vout );
 578     }
 579
 580     if( !p_vout->p_sys->b_using_overlay )
 581     {
 582         DDBLTFX  ddbltfx;
 583
 584         /* We ask for the "NOTEARING" option */
 585         memset( &ddbltfx, 0, sizeof(DDBLTFX) );
 586         ddbltfx.dwSize = sizeof(DDBLTFX);
 587         ddbltfx.dwDDFX = DDBLTFX_NOTEARING;
 588
 589         /* Blit video surface to display */
 590         dxresult = IDirectDrawSurface2_Blt( p_vout->p_sys->p_display,
 591                                             &p_vout->p_sys->rect_dest_clipped,
 592                                             p_pic->p_sys->p_surface,
 593                                             &p_vout->p_sys->rect_src_clipped,
 594                                             DDBLT_ASYNC, &ddbltfx );
 595         if( dxresult != DD_OK )
 596         {
 597             msg_Warn( p_vout, "could not blit surface (error %li)", dxresult );
 598             return;
 599         }
 600
 601     }
 602     else /* using overlay */
 603     {
 604         /* Flip the overlay buffers if we are using back buffers */
 605         if( p_pic->p_sys->p_front_surface == p_pic->p_sys->p_surface )
 606         {
 607             return;
 608         }
 609
 610         dxresult = IDirectDrawSurface2_Flip( p_pic->p_sys->p_front_surface,
 611                                              NULL, DDFLIP_WAIT );
 612         if( dxresult != DD_OK )
 613         {
 614             msg_Warn( p_vout, "could not flip overlay (error %li)", dxresult );
 615         }
 616
 617         /* set currently displayed pic */
 618         p_vout->p_sys->p_current_surface = p_pic->p_sys->p_front_surface;
 619
 620         /* Lock surface to get all the required info */
 621         if( DirectXLockSurface( p_vout, p_pic ) )
 622         {
 623             /* AAARRGG */
 624             msg_Warn( p_vout, "cannot lock surface" );
 625             return;
 626         }
 627         DirectXUnlockSurface( p_vout, p_pic );
 628     }
 629 }
 630
 631 /* following functions are local */
 632
 633 /*****************************************************************************
 634  * DirectXEnumCallback: Device enumeration
 635  *****************************************************************************
 636  * This callback function is called by DirectDraw once for each
 637  * available DirectDraw device.
 638  *****************************************************************************/
 639 BOOL WINAPI DirectXEnumCallback( GUID* p_guid, LPTSTR psz_desc,
 640                                  LPTSTR psz_drivername, VOID* p_context,
 641                                  HMONITOR hmon )
 642 {
 643     vout_thread_t *p_vout = (vout_thread_t *)p_context;
 644     msg_Dbg( p_vout, "DirectXEnumCallback: %s, %s", psz_desc, psz_drivername );
 645
 646     if( hmon && hmon == p_vout->p_sys->hmonitor )
 647     {
 648         msg_Dbg( p_vout, "selecting %s, %s", psz_desc, psz_drivername );
 649         p_vout->p_sys->p_display_driver = malloc( sizeof(GUID) );
 650         if( p_vout->p_sys->p_display_driver )
 651             memcpy( p_vout->p_sys->p_display_driver, p_guid, sizeof(GUID) );
 652     }
 653
 654     return TRUE; /* Keep enumerating */
 655 }
 656
 657 /*****************************************************************************
 658  * DirectXInitDDraw: Takes care of all the DirectDraw initialisations
 659  *****************************************************************************
 660  * This function initialise and allocate resources for DirectDraw.
 661  *****************************************************************************/
 662 static int DirectXInitDDraw( vout_thread_t *p_vout )
 663 {
 664     HRESULT dxresult;
 665     HRESULT (WINAPI *OurDirectDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *);
 666     HRESULT (WINAPI *OurDirectDrawEnumerateEx)( LPDDENUMCALLBACKEXA, LPVOID,
 667                                                 DWORD );
 668     LPDIRECTDRAW p_ddobject;
 669
 670     msg_Dbg( p_vout, "DirectXInitDDraw" );
 671
 672     /* Load direct draw DLL */
 673     p_vout->p_sys->hddraw_dll = LoadLibrary("DDRAW.DLL");
 674     if( p_vout->p_sys->hddraw_dll == NULL )
 675     {
 676         msg_Warn( p_vout, "DirectXInitDDraw failed loading ddraw.dll" );
 677         goto error;
 678     }
 679
 680     OurDirectDrawCreate =
 681       (void *)GetProcAddress(p_vout->p_sys->hddraw_dll, "DirectDrawCreate");
 682     if( OurDirectDrawCreate == NULL )
 683     {
 684         msg_Err( p_vout, "DirectXInitDDraw failed GetProcAddress" );
 685         goto error;
 686     }
 687
 688     OurDirectDrawEnumerateEx =
 689       (void *)GetProcAddress( p_vout->p_sys->hddraw_dll,
 690                               "DirectDrawEnumerateExA" );
 691
 692     if( OurDirectDrawEnumerateEx && p_vout->p_sys->MonitorFromWindow )
 693     {
 694         p_vout->p_sys->hmonitor =
 695             p_vout->p_sys->MonitorFromWindow( p_vout->p_sys->hwnd,
 696                                               MONITOR_DEFAULTTONEAREST );
 697
 698         /* Enumerate displays */
 699         OurDirectDrawEnumerateEx( DirectXEnumCallback, p_vout,
 700                                   DDENUM_ATTACHEDSECONDARYDEVICES );
 701     }
 702
 703     /* Initialize DirectDraw now */
 704     dxresult = OurDirectDrawCreate( p_vout->p_sys->p_display_driver,
 705                                     &p_ddobject, NULL );
 706     if( dxresult != DD_OK )
 707     {
 708         msg_Err( p_vout, "DirectXInitDDraw cannot initialize DDraw" );
 709         goto error;
 710     }
 711
 712     /* Get the IDirectDraw2 interface */
 713     dxresult = IDirectDraw_QueryInterface( p_ddobject, &IID_IDirectDraw2,
 714                                         (LPVOID *)&p_vout->p_sys->p_ddobject );
 715     /* Release the unused interface */
 716     IDirectDraw_Release( p_ddobject );
 717     if( dxresult != DD_OK )
 718     {
 719         msg_Err( p_vout, "cannot get IDirectDraw2 interface" );
 720         goto error;
 721     }
 722
 723     /* Set DirectDraw Cooperative level, ie what control we want over Windows
 724      * display */
 725     dxresult = IDirectDraw2_SetCooperativeLevel( p_vout->p_sys->p_ddobject,
 726                                                  NULL, DDSCL_NORMAL );
 727     if( dxresult != DD_OK )
 728     {
 729         msg_Err( p_vout, "cannot set direct draw cooperative level" );
 730         goto error;
 731     }
 732
 733     /* Get the size of the current display device */
 734     if( p_vout->p_sys->hmonitor && p_vout->p_sys->GetMonitorInfo )
 735     {
 736         MONITORINFO monitor_info;
 737         monitor_info.cbSize = sizeof( MONITORINFO );
 738         p_vout->p_sys->GetMonitorInfo( p_vout->p_sys->hmonitor,
 739                                        &monitor_info );
 740         p_vout->p_sys->rect_display = monitor_info.rcMonitor;
 741     }
 742     else
 743     {
 744         p_vout->p_sys->rect_display.left = 0;
 745         p_vout->p_sys->rect_display.top = 0;
 746         p_vout->p_sys->rect_display.right  = GetSystemMetrics(SM_CXSCREEN);
 747         p_vout->p_sys->rect_display.bottom = GetSystemMetrics(SM_CYSCREEN);
 748     }
 749
 750     msg_Dbg( p_vout, "screen dimensions (%ix%i,%ix%i)",
 751              p_vout->p_sys->rect_display.left,
 752              p_vout->p_sys->rect_display.top,
 753              p_vout->p_sys->rect_display.right,
 754              p_vout->p_sys->rect_display.bottom );
 755
 756     /* Probe the capabilities of the hardware */
 757     DirectXGetDDrawCaps( p_vout );
 758
 759     msg_Dbg( p_vout, "End DirectXInitDDraw" );
 760     return VLC_SUCCESS;
 761
 762  error:
 763     if( p_vout->p_sys->p_ddobject )
 764         IDirectDraw2_Release( p_vout->p_sys->p_ddobject );
 765     if( p_vout->p_sys->hddraw_dll )
 766         FreeLibrary( p_vout->p_sys->hddraw_dll );
 767     p_vout->p_sys->hddraw_dll = NULL;
 768     p_vout->p_sys->p_ddobject = NULL;
 769     return VLC_EGENERIC;
 770 }
 771
 772 /*****************************************************************************
 773  * DirectXCreateDisplay: create the DirectDraw display.
 774  *****************************************************************************
 775  * Create and initialize display according to preferences specified in the vout
 776  * thread fields.
 777  *****************************************************************************/
 778 static int DirectXCreateDisplay( vout_thread_t *p_vout )
 779 {
 780     HRESULT              dxresult;
 781     DDSURFACEDESC        ddsd;
 782     LPDIRECTDRAWSURFACE  p_display;
 783
 784     msg_Dbg( p_vout, "DirectXCreateDisplay" );
 785
 786     /* Now get the primary surface. This surface is what you actually see
 787      * on your screen */
 788     memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 789     ddsd.dwSize = sizeof(DDSURFACEDESC);
 790     ddsd.dwFlags = DDSD_CAPS;
 791     ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
 792
 793     dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 794                                            &ddsd, &p_display, NULL );
 795     if( dxresult != DD_OK )
 796     {
 797         msg_Err( p_vout, "cannot get primary surface (error %li)", dxresult );
 798         return VLC_EGENERIC;
 799     }
 800
 801     dxresult = IDirectDrawSurface_QueryInterface( p_display,
 802                                          &IID_IDirectDrawSurface2,
 803                                          (LPVOID *)&p_vout->p_sys->p_display );
 804     /* Release the old interface */
 805     IDirectDrawSurface_Release( p_display );
 806     if ( dxresult != DD_OK )
 807     {
 808         msg_Err( p_vout, "cannot query IDirectDrawSurface2 interface "
 809                          "(error %li)", dxresult );
 810         return VLC_EGENERIC;
 811     }
 812
 813     /* The clipper will be used only in non-overlay mode */
 814     DirectXCreateClipper( p_vout );
 815
 816     /* Make sure the colorkey will be painted */
 817     p_vout->p_sys->i_colorkey = 1;
 818     p_vout->p_sys->i_rgb_colorkey =
 819         DirectXFindColorkey( p_vout, p_vout->p_sys->i_colorkey );
 820
 821     /* Create the actual brush */
 822     SetClassLong( p_vout->p_sys->hvideownd, GCL_HBRBACKGROUND,
 823                   (LONG)CreateSolidBrush( p_vout->p_sys->i_rgb_colorkey ) );
 824     InvalidateRect( p_vout->p_sys->hvideownd, NULL, TRUE );
 825     DirectXUpdateRects( p_vout, VLC_TRUE );
 826
 827     return VLC_SUCCESS;
 828 }
 829
 830 /*****************************************************************************
 831  * DirectXCreateClipper: Create a clipper that will be used when blitting the
 832  *                       RGB surface to the main display.
 833  *****************************************************************************
 834  * This clipper prevents us to modify by mistake anything on the screen
 835  * which doesn't belong to our window. For example when a part of our video
 836  * window is hidden by another window.
 837  *****************************************************************************/
 838 static int DirectXCreateClipper( vout_thread_t *p_vout )
 839 {
 840     HRESULT dxresult;
 841
 842     msg_Dbg( p_vout, "DirectXCreateClipper" );
 843
 844     /* Create the clipper */
 845     dxresult = IDirectDraw2_CreateClipper( p_vout->p_sys->p_ddobject, 0,
 846                                            &p_vout->p_sys->p_clipper, NULL );
 847     if( dxresult != DD_OK )
 848     {
 849         msg_Warn( p_vout, "cannot create clipper (error %li)", dxresult );
 850         goto error;
 851     }
 852
 853     /* Associate the clipper to the window */
 854     dxresult = IDirectDrawClipper_SetHWnd( p_vout->p_sys->p_clipper, 0,
 855                                            p_vout->p_sys->hvideownd );
 856     if( dxresult != DD_OK )
 857     {
 858         msg_Warn( p_vout, "cannot attach clipper to window (error %li)",
 859                           dxresult );
 860         goto error;
 861     }
 862
 863     /* associate the clipper with the surface */
 864     dxresult = IDirectDrawSurface_SetClipper(p_vout->p_sys->p_display,
 865                                              p_vout->p_sys->p_clipper);
 866     if( dxresult != DD_OK )
 867     {
 868         msg_Warn( p_vout, "cannot attach clipper to surface (error %li)",
 869                           dxresult );
 870         goto error;
 871     }
 872
 873     return VLC_SUCCESS;
 874
 875  error:
 876     if( p_vout->p_sys->p_clipper )
 877     {
 878         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
 879     }
 880     p_vout->p_sys->p_clipper = NULL;
 881     return VLC_EGENERIC;
 882 }
 883
 884 /*****************************************************************************
 885  * DirectXCreateSurface: create an YUV overlay or RGB surface for the video.
 886  *****************************************************************************
 887  * The best method of display is with an YUV overlay because the YUV->RGB
 888  * conversion is done in hardware.
 889  * You can also create a plain RGB surface.
 890  * ( Maybe we could also try an RGB overlay surface, which could have hardware
 891  * scaling and which would also be faster in window mode because you don't
 892  * need to do any blitting to the main display...)
 893  *****************************************************************************/
 894 static int DirectXCreateSurface( vout_thread_t *p_vout,
 895                                  LPDIRECTDRAWSURFACE2 *pp_surface_final,
 896                                  int i_chroma, int b_overlay,
 897                                  int i_backbuffers )
 898 {
 899     HRESULT dxresult;
 900     LPDIRECTDRAWSURFACE p_surface;
 901     DDSURFACEDESC ddsd;
 902
 903     /* Create the video surface */
 904     if( b_overlay )
 905     {
 906         /* Now try to create the YUV overlay surface.
 907          * This overlay will be displayed on top of the primary surface.
 908          * A color key is used to determine whether or not the overlay will be
 909          * displayed, ie the overlay will be displayed in place of the primary
 910          * surface wherever the primary surface will have this color.
 911          * The video window has been created with a background of this color so
 912          * the overlay will be only displayed on top of this window */
 913
 914         memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 915         ddsd.dwSize = sizeof(DDSURFACEDESC);
 916         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
 917         ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
 918         ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
 919         ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
 920         ddsd.dwFlags |= (i_backbuffers ? DDSD_BACKBUFFERCOUNT : 0);
 921         ddsd.ddsCaps.dwCaps = DDSCAPS_OVERLAY | DDSCAPS_VIDEOMEMORY;
 922         ddsd.ddsCaps.dwCaps |= (i_backbuffers ? DDSCAPS_COMPLEX | DDSCAPS_FLIP
 923                                 : 0 );
 924         ddsd.dwHeight = p_vout->render.i_height;
 925         ddsd.dwWidth = p_vout->render.i_width;
 926         ddsd.dwBackBufferCount = i_backbuffers;
 927
 928         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 929                                                &ddsd, &p_surface, NULL );
 930         if( dxresult != DD_OK )
 931         {
 932             *pp_surface_final = NULL;
 933             return VLC_EGENERIC;
 934         }
 935     }
 936
 937     if( !b_overlay )
 938     {
 939         vlc_bool_t b_rgb_surface =
 940             ( i_chroma == VLC_FOURCC('R','G','B','2') )
 941           || ( i_chroma == VLC_FOURCC('R','V','1','5') )
 942            || ( i_chroma == VLC_FOURCC('R','V','1','6') )
 943             || ( i_chroma == VLC_FOURCC('R','V','2','4') )
 944              || ( i_chroma == VLC_FOURCC('R','V','3','2') );
 945
 946         memset( &ddsd, 0, sizeof( DDSURFACEDESC ) );
 947         ddsd.dwSize = sizeof(DDSURFACEDESC);
 948         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
 949         ddsd.dwFlags = DDSD_HEIGHT | DDSD_WIDTH | DDSD_CAPS;
 950         ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
 951         ddsd.dwHeight = p_vout->render.i_height;
 952         ddsd.dwWidth = p_vout->render.i_width;
 953
 954         if( p_vout->p_sys->b_use_sysmem )
 955             ddsd.ddsCaps.dwCaps |= DDSCAPS_SYSTEMMEMORY;
 956         else
 957             ddsd.ddsCaps.dwCaps |= DDSCAPS_VIDEOMEMORY;
 958
 959         if( !b_rgb_surface )
 960         {
 961             ddsd.dwFlags |= DDSD_PIXELFORMAT;
 962             ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
 963             ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
 964         }
 965
 966         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 967                                                &ddsd, &p_surface, NULL );
 968         if( dxresult != DD_OK )
 969         {
 970             *pp_surface_final = NULL;
 971             return VLC_EGENERIC;
 972         }
 973     }
 974
 975     /* Now that the surface is created, try to get a newer DirectX interface */
 976     dxresult = IDirectDrawSurface_QueryInterface( p_surface,
 977                                      &IID_IDirectDrawSurface2,
 978                                      (LPVOID *)pp_surface_final );
 979     IDirectDrawSurface_Release( p_surface );    /* Release the old interface */
 980     if ( dxresult != DD_OK )
 981     {
 982         msg_Err( p_vout, "cannot query IDirectDrawSurface2 interface "
 983                          "(error %li)", dxresult );
 984         *pp_surface_final = NULL;
 985         return VLC_EGENERIC;
 986     }
 987
 988     if( b_overlay )
 989     {
 990         /* Check the overlay is useable as some graphics cards allow creating
 991          * several overlays but only one can be used at one time. */
 992         p_vout->p_sys->p_current_surface = *pp_surface_final;
 993         if( DirectXUpdateOverlay( p_vout ) != VLC_SUCCESS )
 994         {
 995             IDirectDrawSurface2_Release( *pp_surface_final );
 996             *pp_surface_final = NULL;
 997             msg_Err( p_vout, "overlay unuseable (might already be in use)" );
 998             return VLC_EGENERIC;
 999         }
1000     }
1001
1002     return VLC_SUCCESS;
1003 }
1004
1005 /*****************************************************************************
1006  * DirectXUpdateOverlay: Move or resize overlay surface on video display.
1007  *****************************************************************************
1008  * This function is used to move or resize an overlay surface on the screen.
1009  * Ususally the overlay is moved by the user and thus, by a move or resize
1010  * event (in Manage).
1011  *****************************************************************************/
1012 int DirectXUpdateOverlay( vout_thread_t *p_vout )
1013 {
1014     DDOVERLAYFX     ddofx;
1015     DWORD           dwFlags;
1016     HRESULT         dxresult;
1017
1018     if( p_vout->p_sys->p_current_surface == NULL ||
1019         !p_vout->p_sys->b_using_overlay )
1020         return VLC_EGENERIC;
1021
1022     /* The new window dimensions should already have been computed by the
1023      * caller of this function */
1024
1025     /* Position and show the overlay */
1026     memset(&ddofx, 0, sizeof(DDOVERLAYFX));
1027     ddofx.dwSize = sizeof(DDOVERLAYFX);
1028     ddofx.dckDestColorkey.dwColorSpaceLowValue = p_vout->p_sys->i_colorkey;
1029     ddofx.dckDestColorkey.dwColorSpaceHighValue = p_vout->p_sys->i_colorkey;
1030
1031     dwFlags = DDOVER_SHOW | DDOVER_KEYDESTOVERRIDE;
1032
1033     dxresult = IDirectDrawSurface2_UpdateOverlay(
1034                                          p_vout->p_sys->p_current_surface,
1035                                          &p_vout->p_sys->rect_src_clipped,
1036                                          p_vout->p_sys->p_display,
1037                                          &p_vout->p_sys->rect_dest_clipped,
1038                                          dwFlags, &ddofx );
1039     if(dxresult != DD_OK)
1040     {
1041         msg_Warn( p_vout,
1042                   "DirectXUpdateOverlay cannot move or resize overlay" );
1043         return VLC_EGENERIC;
1044     }
1045
1046     return VLC_SUCCESS;
1047 }
1048
1049 /*****************************************************************************
1050  * DirectXCloseDDraw: Release the DDraw object allocated by DirectXInitDDraw
1051  *****************************************************************************
1052  * This function returns all resources allocated by DirectXInitDDraw.
1053  *****************************************************************************/
1054 static void DirectXCloseDDraw( vout_thread_t *p_vout )
1055 {
1056     msg_Dbg( p_vout, "DirectXCloseDDraw" );
1057     if( p_vout->p_sys->p_ddobject != NULL )
1058     {
1059         IDirectDraw2_Release(p_vout->p_sys->p_ddobject);
1060         p_vout->p_sys->p_ddobject = NULL;
1061     }
1062
1063     if( p_vout->p_sys->hddraw_dll != NULL )
1064     {
1065         FreeLibrary( p_vout->p_sys->hddraw_dll );
1066         p_vout->p_sys->hddraw_dll = NULL;
1067     }
1068
1069     if( p_vout->p_sys->p_display_driver != NULL )
1070     {
1071         free( p_vout->p_sys->p_display_driver );
1072         p_vout->p_sys->p_display_driver = NULL;
1073     }
1074
1075     p_vout->p_sys->hmonitor = NULL;
1076 }
1077
1078 /*****************************************************************************
1079  * DirectXCloseDisplay: close and reset the DirectX display device
1080  *****************************************************************************
1081  * This function returns all resources allocated by DirectXCreateDisplay.
1082  *****************************************************************************/
1083 static void DirectXCloseDisplay( vout_thread_t *p_vout )
1084 {
1085     msg_Dbg( p_vout, "DirectXCloseDisplay" );
1086
1087     if( p_vout->p_sys->p_clipper != NULL )
1088     {
1089         msg_Dbg( p_vout, "DirectXCloseDisplay clipper" );
1090         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
1091         p_vout->p_sys->p_clipper = NULL;
1092     }
1093
1094     if( p_vout->p_sys->p_display != NULL )
1095     {
1096         msg_Dbg( p_vout, "DirectXCloseDisplay display" );
1097         IDirectDrawSurface2_Release( p_vout->p_sys->p_display );
1098         p_vout->p_sys->p_display = NULL;
1099     }
1100 }
1101
1102 /*****************************************************************************
1103  * DirectXCloseSurface: close the YUV overlay or RGB surface.
1104  *****************************************************************************
1105  * This function returns all resources allocated for the surface.
1106  *****************************************************************************/
1107 static void DirectXCloseSurface( vout_thread_t *p_vout,
1108                                  LPDIRECTDRAWSURFACE2 p_surface )
1109 {
1110     msg_Dbg( p_vout, "DirectXCloseSurface" );
1111     if( p_surface != NULL )
1112     {
1113         IDirectDrawSurface2_Release( p_surface );
1114     }
1115 }
1116
1117 /*****************************************************************************
1118  * NewPictureVec: allocate a vector of identical pictures
1119  *****************************************************************************
1120  * Returns 0 on success, -1 otherwise
1121  *****************************************************************************/
1122 static int NewPictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1123                           int i_num_pics )
1124 {
1125     int i;
1126     int i_ret = VLC_SUCCESS;
1127     LPDIRECTDRAWSURFACE2 p_surface;
1128
1129     msg_Dbg( p_vout, "NewPictureVec overlay:%s chroma:%.4s",
1130              p_vout->p_sys->b_using_overlay ? "yes" : "no",
1131              (char *)&p_vout->output.i_chroma );
1132
1133     I_OUTPUTPICTURES = 0;
1134
1135     /* First we try to use an YUV overlay surface.
1136      * The overlay surface that we create won't be used to decode directly
1137      * into it because accessing video memory directly is way to slow (remember
1138      * that pictures are decoded macroblock per macroblock). Instead the video
1139      * will be decoded in picture buffers in system memory which will then be
1140      * memcpy() to the overlay surface. */
1141     if( p_vout->p_sys->b_using_overlay )
1142     {
1143         /* Triple buffering rocks! it doesn't have any processing overhead
1144          * (you don't have to wait for the vsync) and provides for a very nice
1145          * video quality (no tearing). */
1146         if( p_vout->p_sys->b_3buf_overlay )
1147             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1148                                           p_vout->output.i_chroma,
1149                                           p_vout->p_sys->b_using_overlay,
1150                                           2 /* number of backbuffers */ );
1151
1152         if( !p_vout->p_sys->b_3buf_overlay || i_ret != VLC_SUCCESS )
1153         {
1154             /* Try to reduce the number of backbuffers */
1155             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1156                                           p_vout->output.i_chroma,
1157                                           p_vout->p_sys->b_using_overlay,
1158                                           0 /* number of backbuffers */ );
1159         }
1160
1161         if( i_ret == VLC_SUCCESS )
1162         {
1163             DDSCAPS dds_caps;
1164             picture_t front_pic;
1165             picture_sys_t front_pic_sys;
1166             front_pic.p_sys = &front_pic_sys;
1167
1168             /* Allocate internal structure */
1169             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1170             if( p_pic[0].p_sys == NULL )
1171             {
1172                 DirectXCloseSurface( p_vout, p_surface );
1173                 return VLC_ENOMEM;
1174             }
1175
1176             /* set front buffer */
1177             p_pic[0].p_sys->p_front_surface = p_surface;
1178
1179             /* Get the back buffer */
1180             memset( &dds_caps, 0, sizeof( DDSCAPS ) );
1181             dds_caps.dwCaps = DDSCAPS_BACKBUFFER;
1182             if( DD_OK != IDirectDrawSurface2_GetAttachedSurface(
1183                                                 p_surface, &dds_caps,
1184                                                 &p_pic[0].p_sys->p_surface ) )
1185             {
1186                 msg_Warn( p_vout, "NewPictureVec could not get back buffer" );
1187                 /* front buffer is the same as back buffer */
1188                 p_pic[0].p_sys->p_surface = p_surface;
1189             }
1190
1191
1192             p_vout->p_sys->p_current_surface = front_pic.p_sys->p_surface =
1193                 p_pic[0].p_sys->p_front_surface;
1194
1195             /* Reset the front buffer memory */
1196             if( DirectXLockSurface( p_vout, &front_pic ) == VLC_SUCCESS )
1197             {
1198                 int i,j;
1199                 for( i = 0; i < front_pic.i_planes; i++ )
1200                     for( j = 0; j < front_pic.p[i].i_lines; j++)
1201                         memset( front_pic.p[i].p_pixels + j *
1202                                 front_pic.p[i].i_pitch, 127,
1203                                 front_pic.p[i].i_visible_pitch );
1204
1205                 DirectXUnlockSurface( p_vout, &front_pic );
1206             }
1207
1208             DirectXUpdateOverlay( p_vout );
1209             I_OUTPUTPICTURES = 1;
1210             msg_Dbg( p_vout, "YUV overlay created successfully" );
1211         }
1212     }
1213
1214     /* As we can't have an overlay, we'll try to create a plain offscreen
1215      * surface. This surface will reside in video memory because there's a
1216      * better chance then that we'll be able to use some kind of hardware
1217      * acceleration like rescaling, blitting or YUV->RGB conversions.
1218      * We then only need to blit this surface onto the main display when we
1219      * want to display it */
1220     if( !p_vout->p_sys->b_using_overlay )
1221     {
1222         if( p_vout->p_sys->b_hw_yuv )
1223         {
1224             DWORD i_codes;
1225             DWORD *pi_codes;
1226             vlc_bool_t b_result = VLC_FALSE;
1227
1228             /* Check if the chroma is supported first. This is required
1229              * because a few buggy drivers don't mind creating the surface
1230              * even if they don't know about the chroma. */
1231             if( IDirectDraw2_GetFourCCCodes( p_vout->p_sys->p_ddobject,
1232                                              &i_codes, NULL ) == DD_OK )
1233             {
1234                 pi_codes = malloc( i_codes * sizeof(DWORD) );
1235                 if( pi_codes && IDirectDraw2_GetFourCCCodes(
1236                     p_vout->p_sys->p_ddobject, &i_codes, pi_codes ) == DD_OK )
1237                 {
1238                     for( i = 0; i < (int)i_codes; i++ )
1239                     {
1240                         if( p_vout->output.i_chroma == pi_codes[i] )
1241                         {
1242                             b_result = VLC_TRUE;
1243                             break;
1244                         }
1245                     }
1246                 }
1247             }
1248
1249             if( b_result )
1250                 i_ret = DirectXCreateSurface( p_vout, &p_surface,
1251                                               p_vout->output.i_chroma,
1252                                               0 /* no overlay */,
1253                                               0 /* no back buffers */ );
1254             else
1255                 p_vout->p_sys->b_hw_yuv = VLC_FALSE;
1256         }
1257
1258         if( i_ret || !p_vout->p_sys->b_hw_yuv )
1259         {
1260             /* Our last choice is to use a plain RGB surface */
1261             DDPIXELFORMAT ddpfPixelFormat;
1262
1263             ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1264             IDirectDrawSurface2_GetPixelFormat( p_vout->p_sys->p_display,
1265                                                 &ddpfPixelFormat );
1266
1267             if( ddpfPixelFormat.dwFlags & DDPF_RGB )
1268             {
1269                 switch( ddpfPixelFormat.dwRGBBitCount )
1270                 {
1271                 case 8: /* FIXME: set the palette */
1272                     p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
1273                     break;
1274                 case 15:
1275                     p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
1276                     break;
1277                 case 16:
1278                     p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
1279                     break;
1280                 case 24:
1281                     p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
1282                     break;
1283                 case 32:
1284                     p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
1285                     break;
1286                 default:
1287                     msg_Err( p_vout, "unknown screen depth" );
1288                     return VLC_EGENERIC;
1289                 }
1290                 p_vout->output.i_rmask = ddpfPixelFormat.dwRBitMask;
1291                 p_vout->output.i_gmask = ddpfPixelFormat.dwGBitMask;
1292                 p_vout->output.i_bmask = ddpfPixelFormat.dwBBitMask;
1293             }
1294
1295             p_vout->p_sys->b_hw_yuv = 0;
1296
1297             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1298                                           p_vout->output.i_chroma,
1299                                           0 /* no overlay */,
1300                                           0 /* no back buffers */ );
1301
1302             if( i_ret && !p_vout->p_sys->b_use_sysmem )
1303             {
1304                 /* Give it a last try with b_use_sysmem enabled */
1305                 p_vout->p_sys->b_use_sysmem = 1;
1306
1307                 i_ret = DirectXCreateSurface( p_vout, &p_surface,
1308                                               p_vout->output.i_chroma,
1309                                               0 /* no overlay */,
1310                                               0 /* no back buffers */ );
1311             }
1312         }
1313
1314         if( i_ret == VLC_SUCCESS )
1315         {
1316             /* Allocate internal structure */
1317             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1318             if( p_pic[0].p_sys == NULL )
1319             {
1320                 DirectXCloseSurface( p_vout, p_surface );
1321                 return VLC_ENOMEM;
1322             }
1323
1324             p_pic[0].p_sys->p_surface = p_pic[0].p_sys->p_front_surface
1325                 = p_surface;
1326
1327             I_OUTPUTPICTURES = 1;
1328
1329             msg_Dbg( p_vout, "created plain surface of chroma:%.4s",
1330                      (char *)&p_vout->output.i_chroma );
1331         }
1332     }
1333
1334
1335     /* Now that we've got all our direct-buffers, we can finish filling in the
1336      * picture_t structures */
1337     for( i = 0; i < I_OUTPUTPICTURES; i++ )
1338     {
1339         p_pic[i].i_status = DESTROYED_PICTURE;
1340         p_pic[i].i_type   = DIRECT_PICTURE;
1341         p_pic[i].pf_lock  = DirectXLockSurface;
1342         p_pic[i].pf_unlock = DirectXUnlockSurface;
1343         PP_OUTPUTPICTURE[i] = &p_pic[i];
1344
1345         if( DirectXLockSurface( p_vout, &p_pic[i] ) != VLC_SUCCESS )
1346         {
1347             /* AAARRGG */
1348             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1349             I_OUTPUTPICTURES = 0;
1350             msg_Err( p_vout, "cannot lock surface" );
1351             return VLC_EGENERIC;
1352         }
1353         DirectXUnlockSurface( p_vout, &p_pic[i] );
1354     }
1355
1356     msg_Dbg( p_vout, "End NewPictureVec (%s)",
1357              I_OUTPUTPICTURES ? "succeeded" : "failed" );
1358
1359     return VLC_SUCCESS;
1360 }
1361
1362 /*****************************************************************************
1363  * FreePicture: destroy a picture vector allocated with NewPictureVec
1364  *****************************************************************************
1365  *
1366  *****************************************************************************/
1367 static void FreePictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1368                             int i_num_pics )
1369 {
1370     int i;
1371
1372     for( i = 0; i < i_num_pics; i++ )
1373     {
1374         DirectXCloseSurface( p_vout, p_pic[i].p_sys->p_front_surface );
1375
1376         for( i = 0; i < i_num_pics; i++ )
1377         {
1378             free( p_pic[i].p_sys );
1379         }
1380     }
1381
1382     p_vout->p_sys->p_current_surface = 0;
1383 }
1384
1385 /*****************************************************************************
1386  * UpdatePictureStruct: updates the internal data in the picture_t structure
1387  *****************************************************************************
1388  * This will setup stuff for use by the video_output thread
1389  *****************************************************************************/
1390 static int UpdatePictureStruct( vout_thread_t *p_vout, picture_t *p_pic,
1391                                 int i_chroma )
1392 {
1393     switch( p_vout->output.i_chroma )
1394     {
1395         case VLC_FOURCC('R','G','B','2'):
1396         case VLC_FOURCC('R','V','1','5'):
1397         case VLC_FOURCC('R','V','1','6'):
1398         case VLC_FOURCC('R','V','2','4'):
1399         case VLC_FOURCC('R','V','3','2'):
1400             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1401             p_pic->p->i_lines = p_vout->output.i_height;
1402             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1403             switch( p_vout->output.i_chroma )
1404             {
1405                 case VLC_FOURCC('R','G','B','2'):
1406                     p_pic->p->i_pixel_pitch = 1;
1407                     break;
1408                 case VLC_FOURCC('R','V','1','5'):
1409                 case VLC_FOURCC('R','V','1','6'):
1410                     p_pic->p->i_pixel_pitch = 2;
1411                     break;
1412                 case VLC_FOURCC('R','V','2','4'):
1413                     p_pic->p->i_pixel_pitch = 3;
1414                     break;
1415                 case VLC_FOURCC('R','V','3','2'):
1416                     p_pic->p->i_pixel_pitch = 4;
1417                     break;
1418                 default:
1419                     return VLC_EGENERIC;
1420             }
1421             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1422               p_pic->p->i_pixel_pitch;
1423             p_pic->i_planes = 1;
1424             break;
1425
1426         case VLC_FOURCC('Y','V','1','2'):
1427
1428             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1429             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1430             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1431             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1432             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1433               p_pic->p[Y_PLANE].i_pixel_pitch;
1434
1435             p_pic->V_PIXELS =  p_pic->Y_PIXELS
1436               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1437             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1438             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1439             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1440             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1441               p_pic->p[V_PLANE].i_pixel_pitch;
1442
1443             p_pic->U_PIXELS = p_pic->V_PIXELS
1444               + p_pic->p[V_PLANE].i_lines * p_pic->p[V_PLANE].i_pitch;
1445             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1446             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1447             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1448             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1449               p_pic->p[U_PLANE].i_pixel_pitch;
1450
1451             p_pic->i_planes = 3;
1452             break;
1453
1454         case VLC_FOURCC('I','Y','U','V'):
1455
1456             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1457             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1458             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1459             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1460             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1461               p_pic->p[Y_PLANE].i_pixel_pitch;
1462
1463             p_pic->U_PIXELS = p_pic->Y_PIXELS
1464               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1465             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1466             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1467             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1468             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1469               p_pic->p[U_PLANE].i_pixel_pitch;
1470
1471             p_pic->V_PIXELS =  p_pic->U_PIXELS
1472               + p_pic->p[U_PLANE].i_lines * p_pic->p[U_PLANE].i_pitch;
1473             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1474             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1475             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1476             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1477               p_pic->p[V_PLANE].i_pixel_pitch;
1478
1479             p_pic->i_planes = 3;
1480             break;
1481
1482         case VLC_FOURCC('Y','U','Y','2'):
1483
1484             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1485             p_pic->p->i_lines = p_vout->output.i_height;
1486             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1487             p_pic->p->i_pixel_pitch = 2;
1488             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1489               p_pic->p->i_pixel_pitch;
1490
1491             p_pic->i_planes = 1;
1492             break;
1493
1494         default:
1495             /* Unknown chroma, tell the guy to get lost */
1496             msg_Err( p_vout, "never heard of chroma 0x%.8x (%4.4s)",
1497                      p_vout->output.i_chroma,
1498                      (char*)&p_vout->output.i_chroma );
1499             return VLC_EGENERIC;
1500     }
1501
1502     return VLC_SUCCESS;
1503 }
1504
1505 /*****************************************************************************
1506  * DirectXGetDDrawCaps: Probe the capabilities of the hardware
1507  *****************************************************************************
1508  * It is nice to know which features are supported by the hardware so we can
1509  * find ways to optimize our rendering.
1510  *****************************************************************************/
1511 static void DirectXGetDDrawCaps( vout_thread_t *p_vout )
1512 {
1513     DDCAPS ddcaps;
1514     HRESULT dxresult;
1515
1516     /* This is just an indication of whether or not we'll support overlay,
1517      * but with this test we don't know if we support YUV overlay */
1518     memset( &ddcaps, 0, sizeof( DDCAPS ));
1519     ddcaps.dwSize = sizeof(DDCAPS);
1520     dxresult = IDirectDraw2_GetCaps( p_vout->p_sys->p_ddobject,
1521                                      &ddcaps, NULL );
1522     if(dxresult != DD_OK )
1523     {
1524         msg_Warn( p_vout, "cannot get caps" );
1525     }
1526     else
1527     {
1528         BOOL bHasOverlay, bHasOverlayFourCC, bCanDeinterlace,
1529              bHasColorKey, bCanStretch, bCanBltFourcc;
1530
1531         /* Determine if the hardware supports overlay surfaces */
1532         bHasOverlay = ((ddcaps.dwCaps & DDCAPS_OVERLAY) ==
1533                        DDCAPS_OVERLAY) ? TRUE : FALSE;
1534         /* Determine if the hardware supports overlay surfaces */
1535         bHasOverlayFourCC = ((ddcaps.dwCaps & DDCAPS_OVERLAYFOURCC) ==
1536                        DDCAPS_OVERLAYFOURCC) ? TRUE : FALSE;
1537         /* Determine if the hardware supports overlay deinterlacing */
1538         bCanDeinterlace = ((ddcaps.dwCaps & DDCAPS2_CANFLIPODDEVEN) ==
1539                        0 ) ? TRUE : FALSE;
1540         /* Determine if the hardware supports colorkeying */
1541         bHasColorKey = ((ddcaps.dwCaps & DDCAPS_COLORKEY) ==
1542                         DDCAPS_COLORKEY) ? TRUE : FALSE;
1543         /* Determine if the hardware supports scaling of the overlay surface */
1544         bCanStretch = ((ddcaps.dwCaps & DDCAPS_OVERLAYSTRETCH) ==
1545                        DDCAPS_OVERLAYSTRETCH) ? TRUE : FALSE;
1546         /* Determine if the hardware supports color conversion during a blit */
1547         bCanBltFourcc = ((ddcaps.dwCaps & DDCAPS_BLTFOURCC ) ==
1548                         DDCAPS_BLTFOURCC) ? TRUE : FALSE;
1549
1550         msg_Dbg( p_vout, "DirectDraw Capabilities: overlay=%i yuvoverlay=%i "
1551                          "can_deinterlace_overlay=%i colorkey=%i stretch=%i "
1552                          "bltfourcc=%i",
1553                          bHasOverlay, bHasOverlayFourCC, bCanDeinterlace,
1554                          bHasColorKey, bCanStretch, bCanBltFourcc );
1555
1556         /* Don't ask for troubles */
1557         if( !bCanBltFourcc ) p_vout->p_sys->b_hw_yuv = FALSE;
1558     }
1559 }
1560
1561 /*****************************************************************************
1562  * DirectXLockSurface: Lock surface and get picture data pointer
1563  *****************************************************************************
1564  * This function locks a surface and get the surface descriptor which amongst
1565  * other things has the pointer to the picture data.
1566  *****************************************************************************/
1567 static int DirectXLockSurface( vout_thread_t *p_vout, picture_t *p_pic )
1568 {
1569     HRESULT dxresult;
1570
1571     /* Lock the surface to get a valid pointer to the picture buffer */
1572     memset( &p_pic->p_sys->ddsd, 0, sizeof( DDSURFACEDESC ));
1573     p_pic->p_sys->ddsd.dwSize = sizeof(DDSURFACEDESC);
1574     dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface,
1575                                          NULL, &p_pic->p_sys->ddsd,
1576                                          DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1577                                          NULL );
1578     if( dxresult != DD_OK )
1579     {
1580         if( dxresult == DDERR_INVALIDPARAMS )
1581         {
1582             /* DirectX 3 doesn't support the DDLOCK_NOSYSLOCK flag, resulting
1583              * in an invalid params error */
1584             dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1585                                              &p_pic->p_sys->ddsd,
1586                                              DDLOCK_WAIT, NULL);
1587         }
1588         if( dxresult == DDERR_SURFACELOST )
1589         {
1590             /* Your surface can be lost so be sure
1591              * to check this and restore it if needed */
1592
1593             /* When using overlays with back-buffers, we need to restore
1594              * the front buffer so the back-buffers get restored as well. */
1595             if( p_vout->p_sys->b_using_overlay  )
1596                 IDirectDrawSurface2_Restore( p_pic->p_sys->p_front_surface );
1597             else
1598                 IDirectDrawSurface2_Restore( p_pic->p_sys->p_surface );
1599
1600             dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1601                                                  &p_pic->p_sys->ddsd,
1602                                                  DDLOCK_WAIT, NULL);
1603             if( dxresult == DDERR_SURFACELOST )
1604                 msg_Dbg( p_vout, "DirectXLockSurface: DDERR_SURFACELOST" );
1605         }
1606         if( dxresult != DD_OK )
1607         {
1608             return VLC_EGENERIC;
1609         }
1610     }
1611
1612     /* Now we have a pointer to the surface memory, we can update our picture
1613      * structure. */
1614     if( UpdatePictureStruct( p_vout, p_pic, p_vout->output.i_chroma )
1615         != VLC_SUCCESS )
1616     {
1617         DirectXUnlockSurface( p_vout, p_pic );
1618         return VLC_EGENERIC;
1619     }
1620     else
1621         return VLC_SUCCESS;
1622 }
1623
1624 /*****************************************************************************
1625  * DirectXUnlockSurface: Unlock a surface locked by DirectXLockSurface().
1626  *****************************************************************************/
1627 static int DirectXUnlockSurface( vout_thread_t *p_vout, picture_t *p_pic )
1628 {
1629     /* Unlock the Surface */
1630     if( IDirectDrawSurface2_Unlock( p_pic->p_sys->p_surface, NULL ) == DD_OK )
1631         return VLC_SUCCESS;
1632     else
1633         return VLC_EGENERIC;
1634 }
1635
1636 /*****************************************************************************
1637  * DirectXFindColorkey: Finds out the 32bits RGB pixel value of the colorkey
1638  *****************************************************************************/
1639 static DWORD DirectXFindColorkey( vout_thread_t *p_vout, uint32_t i_color )
1640 {
1641     DDSURFACEDESC ddsd;
1642     HRESULT dxresult;
1643     COLORREF i_rgb = 0;
1644     uint32_t i_pixel_backup;
1645     HDC hdc;
1646
1647     ddsd.dwSize = sizeof(ddsd);
1648     dxresult = IDirectDrawSurface2_Lock( p_vout->p_sys->p_display, NULL,
1649                                          &ddsd, DDLOCK_WAIT, NULL );
1650     if( dxresult != DD_OK ) return 0;
1651
1652     i_pixel_backup = *(uint32_t *)ddsd.lpSurface;
1653
1654     switch( ddsd.ddpfPixelFormat.dwRGBBitCount )
1655     {
1656     case 4:
1657         *(uint8_t *)ddsd.lpSurface = 0x11;
1658         break;
1659     case 8:
1660         *(uint8_t *)ddsd.lpSurface = 0x01;
1661         break;
1662     case 16:
1663         *(uint16_t *)ddsd.lpSurface = 0x01;
1664         break;
1665     case 24:
1666         *(uint32_t *)ddsd.lpSurface = 0x0100;
1667         break;
1668     case 32:
1669         *(uint32_t *)ddsd.lpSurface = 0x01;
1670         break;
1671     }
1672
1673     IDirectDrawSurface2_Unlock( p_vout->p_sys->p_display, NULL );
1674
1675     if( IDirectDrawSurface2_GetDC( p_vout->p_sys->p_display, &hdc ) == DD_OK )
1676     {
1677         i_rgb = GetPixel( hdc, 0, 0 );
1678         IDirectDrawSurface2_ReleaseDC( p_vout->p_sys->p_display, hdc );
1679     }
1680
1681     ddsd.dwSize = sizeof(ddsd);
1682     dxresult = IDirectDrawSurface2_Lock( p_vout->p_sys->p_display, NULL,
1683                                          &ddsd, DDLOCK_WAIT, NULL );
1684     if( dxresult != DD_OK ) return i_rgb;
1685
1686     *(uint32_t *)ddsd.lpSurface = i_pixel_backup;
1687
1688     IDirectDrawSurface2_Unlock( p_vout->p_sys->p_display, NULL );
1689
1690     return i_rgb;
1691 }
1692
1693 /*****************************************************************************
1694  * object variables callbacks: a bunch of object variables are used by the
1695  * interfaces to interact with the vout.
1696  *****************************************************************************/
1697 static int OnTopCallback( vlc_object_t *p_this, char const *psz_cmd,
1698                         vlc_value_t oldval, vlc_value_t newval, void *p_data )
1699 {
1700     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1701     p_vout->p_sys->b_on_top_change = VLC_TRUE;
1702     return VLC_SUCCESS;
1703 }