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