git.sesse.net Git - vlc/blob - plugins/directx/vout_directx.c

   1 /*****************************************************************************
   2  * vout_directx.c: Windows DirectX video output display method
   3  *****************************************************************************
   4  * Copyright (C) 2001 VideoLAN
   5  * $Id: vout_directx.c,v 1.42 2002/07/31 20:56:51 sam 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 <ddraw.h>
  46
  47 #include "netutils.h"
  48
  49 #include "vout_directx.h"
  50
  51 /*****************************************************************************
  52  * DirectDraw GUIDs.
  53  * Defining them here allows us to get rid of the dxguid library during
  54  * the linking stage.
  55  *****************************************************************************/
  56 #include <initguid.h>
  57 DEFINE_GUID( IID_IDirectDraw2, 0xB3A6F3E0,0x2B43,0x11CF,0xA2,0xDE,0x00,0xAA,0x00,0xB9,0x33,0x56 );
  58 DEFINE_GUID( IID_IDirectDrawSurface2, 0x57805885,0x6eec,0x11cf,0x94,0x41,0xa8,0x23,0x03,0xc1,0x0e,0x27 );
  59
  60 /*****************************************************************************
  61  * Local prototypes.
  62  *****************************************************************************/
  63 static int  Init      ( vout_thread_t * );
  64 static void End       ( vout_thread_t * );
  65 static int  Manage    ( vout_thread_t * );
  66 static void Display   ( vout_thread_t *, picture_t * );
  67
  68 static int  NewPictureVec  ( vout_thread_t *, picture_t *, int );
  69 static void FreePictureVec ( vout_thread_t *, picture_t *, int );
  70 static int  UpdatePictureStruct( vout_thread_t *, picture_t *, int );
  71
  72 static int  DirectXInitDDraw      ( vout_thread_t *p_vout );
  73 static void DirectXCloseDDraw     ( vout_thread_t *p_vout );
  74 static int  DirectXCreateDisplay  ( vout_thread_t *p_vout );
  75 static void DirectXCloseDisplay   ( vout_thread_t *p_vout );
  76 static int  DirectXCreateSurface  ( vout_thread_t *p_vout,
  77                                     LPDIRECTDRAWSURFACE2 *, int, int, int );
  78 static void DirectXCloseSurface   ( vout_thread_t *p_vout,
  79                                     LPDIRECTDRAWSURFACE2 );
  80 static int  DirectXCreateClipper  ( vout_thread_t *p_vout );
  81 static void DirectXGetDDrawCaps   ( vout_thread_t *p_vout );
  82 static int  DirectXGetSurfaceDesc ( picture_t *p_pic );
  83
  84 /*****************************************************************************
  85  * OpenVideo: allocate DirectX video thread output method
  86  *****************************************************************************
  87  * This function allocates and initialize the DirectX vout method.
  88  *****************************************************************************/
  89 int E_(OpenVideo) ( vlc_object_t *p_this )
  90 {
  91     vout_thread_t * p_vout = (vout_thread_t *)p_this;
  92
  93     /* Allocate structure */
  94     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
  95     if( p_vout->p_sys == NULL )
  96     {
  97         msg_Err( p_vout, "out of memory" );
  98         return 1;
  99     }
 100
 101     /* Initialisations */
 102     p_vout->pf_init = Init;
 103     p_vout->pf_end = End;
 104     p_vout->pf_manage = Manage;
 105     p_vout->pf_render = NULL;
 106     p_vout->pf_display = Display;
 107
 108     p_vout->p_sys->p_ddobject = NULL;
 109     p_vout->p_sys->p_display = NULL;
 110     p_vout->p_sys->p_current_surface = NULL;
 111     p_vout->p_sys->p_clipper = NULL;
 112     p_vout->p_sys->hbrush = NULL;
 113     p_vout->p_sys->hwnd = NULL;
 114     p_vout->p_sys->i_changes = 0;
 115     p_vout->p_sys->b_caps_overlay_clipping = 0;
 116     SetRectEmpty( &p_vout->p_sys->rect_display );
 117     p_vout->p_sys->b_using_overlay = config_GetInt( p_vout, "overlay" );
 118     p_vout->p_sys->b_use_sysmem = config_GetInt( p_vout, "directx-use-sysmem");
 119     p_vout->p_sys->b_hw_yuv = config_GetInt( p_vout, "directx-hw-yuv" );
 120
 121     p_vout->p_sys->b_cursor_hidden = 0;
 122     p_vout->p_sys->i_lastmoved = mdate();
 123
 124     /* Set main window's size */
 125     p_vout->p_sys->i_window_width = p_vout->i_window_width;
 126     p_vout->p_sys->i_window_height = p_vout->i_window_height;
 127
 128     /* Create the DirectXEventThread, this thread is created by us to isolate
 129      * the Win32 PeekMessage function calls. We want to do this because
 130      * Windows can stay blocked inside this call for a long time, and when
 131      * this happens it thus blocks vlc's video_output thread.
 132      * DirectXEventThread will take care of the creation of the video
 133      * window (because PeekMessage has to be called from the same thread which
 134      * created the window). */
 135     msg_Dbg( p_vout, "creating DirectXEventThread" );
 136     p_vout->p_sys->p_event =
 137         vlc_object_create( p_vout, sizeof(event_thread_t) );
 138     p_vout->p_sys->p_event->p_vout = p_vout;
 139     if( vlc_thread_create( p_vout->p_sys->p_event,
 140                            "DirectX Events Thread", DirectXEventThread, 1 ) )
 141     {
 142         msg_Err( p_vout, "cannot create DirectXEventThread" );
 143         vlc_object_destroy( p_vout->p_sys->p_event );
 144         p_vout->p_sys->p_event = NULL;
 145         goto error;
 146     }
 147
 148     if( p_vout->p_sys->p_event->b_error )
 149     {
 150         msg_Err( p_vout, "DirectXEventThread failed" );
 151         goto error;
 152     }
 153
 154     vlc_object_attach( p_vout->p_sys->p_event, p_vout );
 155
 156     msg_Dbg( p_vout, "DirectXEventThread running" );
 157
 158     /* Initialise DirectDraw */
 159     if( DirectXInitDDraw( p_vout ) )
 160     {
 161         msg_Err( p_vout, "cannot initialize DirectDraw" );
 162         goto error;
 163     }
 164
 165     /* Create the directx display */
 166     if( DirectXCreateDisplay( p_vout ) )
 167     {
 168         msg_Err( p_vout, "cannot initialize DirectDraw" );
 169         goto error;
 170     }
 171
 172     return 0;
 173
 174  error:
 175     Destroy( p_vout );
 176     return 1;
 177
 178 }
 179
 180 /*****************************************************************************
 181  * Init: initialize DirectX video thread output method
 182  *****************************************************************************
 183  * This function create the directx surfaces needed by the output thread.
 184  * It is called at the beginning of the thread.
 185  *****************************************************************************/
 186 static int Init( vout_thread_t *p_vout )
 187 {
 188     int i_chroma_backup;
 189
 190     /* Initialize the output structure.
 191      * Since DirectDraw can do rescaling for us, stick to the default
 192      * coordinates and aspect. */
 193     p_vout->output.i_width  = p_vout->render.i_width;
 194     p_vout->output.i_height = p_vout->render.i_height;
 195     p_vout->output.i_aspect = p_vout->render.i_aspect;
 196
 197 #define MAX_DIRECTBUFFERS 1
 198     /* Right now we use only 1 directbuffer because we don't want the
 199      * video decoder to decode directly into direct buffers as they are
 200      * created into video memory and video memory is _really_ slow */
 201
 202     /* Choose the chroma we will try first. */
 203     switch( p_vout->render.i_chroma )
 204     {
 205         case VLC_FOURCC('Y','U','Y','2'):
 206         case VLC_FOURCC('Y','U','N','V'):
 207             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 208             break;
 209         case VLC_FOURCC('U','Y','V','Y'):
 210         case VLC_FOURCC('U','Y','N','V'):
 211         case VLC_FOURCC('Y','4','2','2'):
 212             p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
 213             break;
 214         case VLC_FOURCC('Y','V','Y','U'):
 215             p_vout->output.i_chroma = VLC_FOURCC('Y','V','Y','U');
 216             break;
 217         default:
 218             p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 219             break;
 220     }
 221
 222     NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 223
 224     i_chroma_backup = p_vout->output.i_chroma;
 225
 226     if( !I_OUTPUTPICTURES )
 227     {
 228         /* hmmm, it didn't work! Let's try commonly supported chromas */
 229         p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 230         NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 231         if( !I_OUTPUTPICTURES )
 232         {
 233             /* hmmm, it didn't work! Let's try commonly supported chromas */
 234             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 235             NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 236         }
 237     }
 238
 239     if( !I_OUTPUTPICTURES )
 240     {
 241         /* If it still didn't work then don't try to use an overlay */
 242         p_vout->output.i_chroma = i_chroma_backup;
 243         p_vout->p_sys->b_using_overlay = 0;
 244         NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 245     }
 246
 247     /* Change the window title bar text */
 248     if( p_vout->p_sys->b_using_overlay )
 249         SetWindowText( p_vout->p_sys->hwnd,
 250                        VOUT_TITLE " (hardware YUV overlay DirectX output)" );
 251     else if( p_vout->p_sys->b_hw_yuv )
 252         SetWindowText( p_vout->p_sys->hwnd,
 253                        VOUT_TITLE " (hardware YUV DirectX output)" );
 254     else SetWindowText( p_vout->p_sys->hwnd,
 255                         VOUT_TITLE " (software RGB DirectX output)" );
 256
 257     return 0;
 258 }
 259
 260 /*****************************************************************************
 261  * End: terminate Sys video thread output method
 262  *****************************************************************************
 263  * Terminate an output method created by Create.
 264  * It is called at the end of the thread.
 265  *****************************************************************************/
 266 static void End( vout_thread_t *p_vout )
 267 {
 268     FreePictureVec( p_vout, p_vout->p_picture, I_OUTPUTPICTURES );
 269     return;
 270 }
 271
 272 /*****************************************************************************
 273  * CloseVideo: destroy Sys video thread output method
 274  *****************************************************************************
 275  * Terminate an output method created by Create
 276  *****************************************************************************/
 277 void E_(CloseVideo) ( vlc_object_t *p_this )
 278 {
 279     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 280
 281     msg_Dbg( p_vout, "CloseVideo" );
 282
 283     DirectXCloseDisplay( p_vout );
 284     DirectXCloseDDraw( p_vout );
 285
 286     if( p_vout->p_sys->p_event )
 287     {
 288         vlc_object_detach_all( p_vout->p_sys->p_event );
 289
 290         /* Kill DirectXEventThread */
 291         p_vout->p_sys->p_event->b_die = 1;
 292
 293         /* we need to be sure DirectXEventThread won't stay stuck in
 294          * GetMessage, so we send a fake message */
 295         if( p_vout->p_sys->hwnd )
 296             PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0);
 297
 298         vlc_thread_join( p_vout->p_sys->p_event );
 299         vlc_object_destroy( p_vout->p_sys->p_event );
 300     }
 301
 302     if( p_vout->p_sys )
 303     {
 304         free( p_vout->p_sys );
 305         p_vout->p_sys = NULL;
 306     }
 307 }
 308
 309 /*****************************************************************************
 310  * Manage: handle Sys events
 311  *****************************************************************************
 312  * This function should be called regularly by the video output thread.
 313  * It returns a non null value if an error occured.
 314  *****************************************************************************/
 315 static int Manage( vout_thread_t *p_vout )
 316 {
 317     WINDOWPLACEMENT window_placement;
 318
 319     /* We used to call the Win32 PeekMessage function here to read the window
 320      * messages. But since window can stay blocked into this function for a
 321      * long time (for example when you move your window on the screen), I
 322      * decided to isolate PeekMessage in another thread. */
 323
 324     /*
 325      * Scale Change
 326      */
 327     if( p_vout->i_changes & VOUT_SCALE_CHANGE
 328         || p_vout->p_sys->i_changes & VOUT_SCALE_CHANGE)
 329     {
 330         msg_Dbg( p_vout, "Scale Change" );
 331         if( !p_vout->p_sys->b_using_overlay )
 332             InvalidateRect( p_vout->p_sys->hwnd, NULL, TRUE );
 333         else
 334             DirectXUpdateOverlay( p_vout );
 335         p_vout->i_changes &= ~VOUT_SCALE_CHANGE;
 336         p_vout->p_sys->i_changes &= ~VOUT_SCALE_CHANGE;
 337     }
 338
 339     /*
 340      * Size Change
 341      */
 342     if( p_vout->i_changes & VOUT_SIZE_CHANGE
 343         || p_vout->p_sys->i_changes & VOUT_SIZE_CHANGE )
 344     {
 345         msg_Dbg( p_vout, "Size Change" );
 346         if( !p_vout->p_sys->b_using_overlay )
 347             InvalidateRect( p_vout->p_sys->hwnd, NULL, TRUE );
 348         else
 349             DirectXUpdateOverlay( p_vout );
 350         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 351         p_vout->p_sys->i_changes &= ~VOUT_SIZE_CHANGE;
 352     }
 353
 354     /*
 355      * Fullscreen change
 356      */
 357     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
 358         || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
 359     {
 360         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 361
 362         /* We need to switch between Maximized and Normal sized window */
 363         window_placement.length = sizeof(WINDOWPLACEMENT);
 364         GetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 365         if( p_vout->b_fullscreen )
 366         {
 367             /* Maximized window */
 368             window_placement.showCmd = SW_SHOWMAXIMIZED;
 369             /* Change window style, no borders and no title bar */
 370             SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE, 0 );
 371
 372         }
 373         else
 374         {
 375             /* Normal window */
 376             window_placement.showCmd = SW_SHOWNORMAL;
 377             /* Change window style, borders and title bar */
 378             SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE,
 379                            WS_OVERLAPPEDWINDOW | WS_SIZEBOX | WS_VISIBLE );
 380         }
 381
 382         SetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 383
 384         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 385         p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 386     }
 387
 388     /*
 389      * Pointer change
 390      */
 391     if( (!p_vout->p_sys->b_cursor_hidden) &&
 392         ( (mdate() - p_vout->p_sys->i_lastmoved) > 5000000 ) )
 393     {
 394         /* Hide the mouse automatically */
 395         p_vout->p_sys->b_cursor_hidden = 1;
 396         PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
 397     }
 398
 399     /* Check if the event thread is still running */
 400     if( p_vout->p_sys->p_event->b_die )
 401         return 1; /* exit */
 402
 403     return 0;
 404 }
 405
 406 /*****************************************************************************
 407  * Display: displays previously rendered output
 408  *****************************************************************************
 409  * This function sends the currently rendered image to the display, wait until
 410  * it is displayed and switch the two rendering buffers, preparing next frame.
 411  *****************************************************************************/
 412 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 413 {
 414     HRESULT dxresult;
 415
 416     if( (p_vout->p_sys->p_display == NULL) )
 417     {
 418         msg_Warn( p_vout, "no display!!" );
 419         return;
 420     }
 421
 422     if( !p_vout->p_sys->b_using_overlay )
 423     {
 424         DDBLTFX  ddbltfx;
 425
 426         /* We ask for the "NOTEARING" option */
 427         memset( &ddbltfx, 0, sizeof(DDBLTFX) );
 428         ddbltfx.dwSize = sizeof(DDBLTFX);
 429         ddbltfx.dwDDFX = DDBLTFX_NOTEARING;
 430
 431         /* Blit video surface to display */
 432         dxresult = IDirectDrawSurface2_Blt(p_vout->p_sys->p_display,
 433                                            &p_vout->p_sys->rect_dest_clipped,
 434                                            p_pic->p_sys->p_surface,
 435                                            &p_vout->p_sys->rect_src_clipped,
 436                                            DDBLT_ASYNC, &ddbltfx );
 437         if ( dxresult == DDERR_SURFACELOST )
 438         {
 439             /* Our surface can be lost so be sure
 440              * to check this and restore it if needed */
 441             IDirectDrawSurface2_Restore( p_vout->p_sys->p_display );
 442
 443             /* Now that the surface has been restored try to display again */
 444             dxresult = IDirectDrawSurface2_Blt(p_vout->p_sys->p_display,
 445                                            &p_vout->p_sys->rect_dest_clipped,
 446                                            p_pic->p_sys->p_surface,
 447                                            &p_vout->p_sys->rect_src_clipped,
 448                                            DDBLT_ASYNC, &ddbltfx );
 449         }
 450
 451         if( dxresult != DD_OK )
 452         {
 453             msg_Warn( p_vout, "could not Blit the surface" );
 454             return;
 455         }
 456
 457     }
 458     else /* using overlay */
 459     {
 460
 461         /* Flip the overlay buffers if we are using back buffers */
 462         if( p_pic->p_sys->p_front_surface == p_pic->p_sys->p_surface )
 463             return;
 464
 465         dxresult = IDirectDrawSurface2_Flip( p_pic->p_sys->p_front_surface,
 466                                              NULL, DDFLIP_WAIT );
 467         if ( dxresult == DDERR_SURFACELOST )
 468         {
 469             /* Our surface can be lost so be sure
 470              * to check this and restore it if needed */
 471             IDirectDrawSurface2_Restore( p_vout->p_sys->p_display );
 472             IDirectDrawSurface2_Restore( p_pic->p_sys->p_front_surface );
 473
 474             /* Now that the surface has been restored try to display again */
 475             dxresult = IDirectDrawSurface2_Flip( p_pic->p_sys->p_front_surface,
 476                                                  NULL, DDFLIP_WAIT );
 477             DirectXUpdateOverlay( p_vout );
 478         }
 479
 480         if( dxresult != DD_OK )
 481             msg_Warn( p_vout, "could not flip overlay surface" );
 482
 483         if( !DirectXGetSurfaceDesc( p_pic ) )
 484         {
 485             /* AAARRGG */
 486             msg_Err( p_vout, "cannot get surface desc" );
 487             return;
 488         }
 489
 490         if( !UpdatePictureStruct( p_vout, p_pic, p_vout->output.i_chroma ) )
 491         {
 492             /* AAARRGG */
 493             msg_Err( p_vout, "invalid pic chroma" );
 494             return;
 495         }
 496
 497         /* set currently displayed pic */
 498         p_vout->p_sys->p_current_surface = p_pic->p_sys->p_front_surface;
 499     }
 500
 501 }
 502
 503
 504 /* following functions are local */
 505
 506 /*****************************************************************************
 507  * DirectXInitDDraw: Takes care of all the DirectDraw initialisations
 508  *****************************************************************************
 509  * This function initialise and allocate resources for DirectDraw.
 510  *****************************************************************************/
 511 static int DirectXInitDDraw( vout_thread_t *p_vout )
 512 {
 513     HRESULT    dxresult;
 514     HRESULT    (WINAPI *OurDirectDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *);
 515     LPDIRECTDRAW  p_ddobject;
 516
 517     msg_Dbg( p_vout, "DirectXInitDDraw" );
 518
 519     /* load direct draw DLL */
 520     p_vout->p_sys->hddraw_dll = LoadLibrary("DDRAW.DLL");
 521     if( p_vout->p_sys->hddraw_dll == NULL )
 522     {
 523         msg_Warn( p_vout, "DirectXInitDDraw failed loading ddraw.dll" );
 524         goto error;
 525     }
 526
 527     OurDirectDrawCreate =
 528       (void *)GetProcAddress(p_vout->p_sys->hddraw_dll, "DirectDrawCreate");
 529     if ( OurDirectDrawCreate == NULL )
 530     {
 531         msg_Err( p_vout, "DirectXInitDDraw failed GetProcAddress" );
 532         goto error;
 533     }
 534
 535     /* Initialize DirectDraw now */
 536     dxresult = OurDirectDrawCreate( NULL, &p_ddobject, NULL );
 537     if( dxresult != DD_OK )
 538     {
 539         msg_Err( p_vout, "DirectXInitDDraw cannot initialize DDraw" );
 540         goto error;
 541     }
 542
 543     /* Get the IDirectDraw2 interface */
 544     dxresult = IDirectDraw_QueryInterface( p_ddobject, &IID_IDirectDraw2,
 545                                         (LPVOID *)&p_vout->p_sys->p_ddobject );
 546     /* Release the unused interface */
 547     IDirectDraw_Release( p_ddobject );
 548     if( dxresult != DD_OK )
 549     {
 550         msg_Err( p_vout, "cannot get IDirectDraw2 interface" );
 551         goto error;
 552     }
 553
 554     /* Set DirectDraw Cooperative level, ie what control we want over Windows
 555      * display */
 556     dxresult = IDirectDraw2_SetCooperativeLevel( p_vout->p_sys->p_ddobject,
 557                                            p_vout->p_sys->hwnd, DDSCL_NORMAL );
 558     if( dxresult != DD_OK )
 559     {
 560         msg_Err( p_vout, "cannot set direct draw cooperative level" );
 561         goto error;
 562     }
 563
 564     /* Probe the capabilities of the hardware */
 565     DirectXGetDDrawCaps( p_vout );
 566
 567     msg_Dbg( p_vout, "End DirectXInitDDraw" );
 568     return 0;
 569
 570  error:
 571     if( p_vout->p_sys->p_ddobject )
 572         IDirectDraw2_Release( p_vout->p_sys->p_ddobject );
 573     if( p_vout->p_sys->hddraw_dll )
 574         FreeLibrary( p_vout->p_sys->hddraw_dll );
 575     p_vout->p_sys->hddraw_dll = NULL;
 576     p_vout->p_sys->p_ddobject = NULL;
 577     return 1;
 578 }
 579
 580 /*****************************************************************************
 581  * DirectXCreateDisplay: create the DirectDraw display.
 582  *****************************************************************************
 583  * Create and initialize display according to preferences specified in the vout
 584  * thread fields.
 585  *****************************************************************************/
 586 static int DirectXCreateDisplay( vout_thread_t *p_vout )
 587 {
 588     HRESULT              dxresult;
 589     DDSURFACEDESC        ddsd;
 590     LPDIRECTDRAWSURFACE  p_display;
 591     DDPIXELFORMAT   pixel_format;
 592
 593     msg_Dbg( p_vout, "DirectXCreateDisplay" );
 594
 595     /* Now get the primary surface. This surface is what you actually see
 596      * on your screen */
 597     memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 598     ddsd.dwSize = sizeof(DDSURFACEDESC);
 599     ddsd.dwFlags = DDSD_CAPS;
 600     ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
 601
 602     dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 603                                            &ddsd,
 604                                            &p_display, NULL );
 605     if( dxresult != DD_OK )
 606     {
 607         msg_Err( p_vout, "cannot get direct draw primary surface" );
 608         return 1;
 609     }
 610
 611     dxresult = IDirectDrawSurface_QueryInterface( p_display,
 612                                          &IID_IDirectDrawSurface2,
 613                                          (LPVOID *)&p_vout->p_sys->p_display );
 614     /* Release the old interface */
 615     IDirectDrawSurface_Release( p_display );
 616     if ( dxresult != DD_OK )
 617     {
 618         msg_Err( p_vout, "cannot get IDirectDrawSurface2 interface" );
 619         return 1;
 620     }
 621
 622     /* The clipper will be used only in non-overlay mode */
 623     DirectXCreateClipper( p_vout );
 624
 625
 626 #if 1
 627     /* compute the colorkey pixel value from the RGB value we've got */
 628     memset( &pixel_format, 0, sizeof( DDPIXELFORMAT ));
 629     pixel_format.dwSize = sizeof( DDPIXELFORMAT );
 630     dxresult = IDirectDrawSurface2_GetPixelFormat( p_vout->p_sys->p_display,
 631                                                    &pixel_format );
 632     if( dxresult != DD_OK )
 633         msg_Warn( p_vout, "DirectXUpdateOverlay GetPixelFormat failed" );
 634     p_vout->p_sys->i_colorkey = (DWORD)((( p_vout->p_sys->i_rgb_colorkey
 635                                            * pixel_format.dwRBitMask) / 255)
 636                                         & pixel_format.dwRBitMask);
 637 #endif
 638
 639     return 0;
 640 }
 641
 642
 643 /*****************************************************************************
 644  * DirectXCreateClipper: Create a clipper that will be used when blitting the
 645  *                       RGB surface to the main display.
 646  *****************************************************************************
 647  * This clipper prevents us to modify by mistake anything on the screen
 648  * which doesn't belong to our window. For example when a part of our video
 649  * window is hidden by another window.
 650  *****************************************************************************/
 651 static int DirectXCreateClipper( vout_thread_t *p_vout )
 652 {
 653     HRESULT dxresult;
 654
 655     msg_Dbg( p_vout, "DirectXCreateClipper" );
 656
 657     /* Create the clipper */
 658     dxresult = IDirectDraw2_CreateClipper( p_vout->p_sys->p_ddobject, 0,
 659                                            &p_vout->p_sys->p_clipper, NULL );
 660     if( dxresult != DD_OK )
 661     {
 662         msg_Warn( p_vout, "DirectXCreateClipper cannot create clipper" );
 663         goto error;
 664     }
 665
 666     /* associate the clipper to the window */
 667     dxresult = IDirectDrawClipper_SetHWnd(p_vout->p_sys->p_clipper, 0,
 668                                           p_vout->p_sys->hwnd);
 669     if( dxresult != DD_OK )
 670     {
 671         msg_Warn( p_vout,
 672                   "DirectXCreateClipper cannot attach clipper to window" );
 673         goto error;
 674     }
 675
 676     /* associate the clipper with the surface */
 677     dxresult = IDirectDrawSurface_SetClipper(p_vout->p_sys->p_display,
 678                                              p_vout->p_sys->p_clipper);
 679     if( dxresult != DD_OK )
 680     {
 681         msg_Warn( p_vout,
 682                   "DirectXCreateClipper cannot attach clipper to surface" );
 683         goto error;
 684     }
 685
 686     return 0;
 687
 688  error:
 689     if( p_vout->p_sys->p_clipper )
 690         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
 691     p_vout->p_sys->p_clipper = NULL;
 692     return 1;
 693
 694 }
 695
 696 /*****************************************************************************
 697  * DirectXCreateSurface: create an YUV overlay or RGB surface for the video.
 698  *****************************************************************************
 699  * The best method of display is with an YUV overlay because the YUV->RGB
 700  * conversion is done in hardware.
 701  * You can also create a plain RGB surface.
 702  * ( Maybe we could also try an RGB overlay surface, which could have hardware
 703  * scaling and which would also be faster in window mode because you don't
 704  * need to do any blitting to the main display...)
 705  *****************************************************************************/
 706 static int DirectXCreateSurface( vout_thread_t *p_vout,
 707                                  LPDIRECTDRAWSURFACE2 *pp_surface_final,
 708                                  int i_chroma, int b_overlay,
 709                                  int i_backbuffers )
 710 {
 711     HRESULT dxresult;
 712     LPDIRECTDRAWSURFACE p_surface;
 713     DDSURFACEDESC ddsd;
 714
 715     /* Create the video surface */
 716     if( b_overlay )
 717     {
 718         /* Now try to create the YUV overlay surface.
 719          * This overlay will be displayed on top of the primary surface.
 720          * A color key is used to determine whether or not the overlay will be
 721          * displayed, ie the overlay will be displayed in place of the primary
 722          * surface wherever the primary surface will have this color.
 723          * The video window has been created with a background of this color so
 724          * the overlay will be only displayed on top of this window */
 725
 726         memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 727         ddsd.dwSize = sizeof(DDSURFACEDESC);
 728         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
 729         ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
 730         ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
 731         ddsd.dwFlags = DDSD_CAPS |
 732                        DDSD_HEIGHT |
 733                        DDSD_WIDTH |
 734                        DDSD_PIXELFORMAT;
 735         ddsd.dwFlags |= (i_backbuffers ? DDSD_BACKBUFFERCOUNT : 0);
 736         ddsd.ddsCaps.dwCaps = DDSCAPS_OVERLAY |
 737                               DDSCAPS_VIDEOMEMORY;
 738         ddsd.ddsCaps.dwCaps |= (i_backbuffers ? DDSCAPS_COMPLEX | DDSCAPS_FLIP
 739                                 : 0 );
 740         ddsd.dwHeight = p_vout->render.i_height;
 741         ddsd.dwWidth = p_vout->render.i_width;
 742         ddsd.dwBackBufferCount = i_backbuffers;
 743
 744         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 745                                                &ddsd,
 746                                                &p_surface, NULL );
 747         if( dxresult != DD_OK )
 748         {
 749             *pp_surface_final = NULL;
 750             return 0;
 751         }
 752     }
 753
 754     if( !b_overlay )
 755     {
 756         vlc_bool_t b_rgb_surface =
 757             ( i_chroma == VLC_FOURCC('R','G','B','2') )
 758           || ( i_chroma == VLC_FOURCC('R','V','1','5') )
 759            || ( i_chroma == VLC_FOURCC('R','V','1','6') )
 760             || ( i_chroma == VLC_FOURCC('R','V','2','4') )
 761              || ( i_chroma == VLC_FOURCC('R','V','3','2') );
 762
 763         memset( &ddsd, 0, sizeof( DDSURFACEDESC ) );
 764         ddsd.dwSize = sizeof(DDSURFACEDESC);
 765         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
 766         ddsd.dwFlags = DDSD_HEIGHT |
 767                        DDSD_WIDTH |
 768                        DDSD_CAPS;
 769         ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
 770         ddsd.dwHeight = p_vout->render.i_height;
 771         ddsd.dwWidth = p_vout->render.i_width;
 772
 773         if( p_vout->p_sys->b_use_sysmem )
 774             ddsd.ddsCaps.dwCaps |= DDSCAPS_SYSTEMMEMORY;
 775         else
 776             ddsd.ddsCaps.dwCaps |= DDSCAPS_VIDEOMEMORY;
 777
 778         if( !b_rgb_surface )
 779         {
 780             ddsd.dwFlags |= DDSD_PIXELFORMAT;
 781             ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
 782             ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
 783         }
 784
 785         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 786                                                &ddsd,
 787                                                &p_surface, NULL );
 788         if( dxresult != DD_OK )
 789         {
 790             *pp_surface_final = NULL;
 791             return 0;
 792         }
 793     }
 794
 795     /* Now that the surface is created, try to get a newer DirectX interface */
 796     dxresult = IDirectDrawSurface_QueryInterface( p_surface,
 797                                      &IID_IDirectDrawSurface2,
 798                                      (LPVOID *)pp_surface_final );
 799     IDirectDrawSurface_Release( p_surface );    /* Release the old interface */
 800     if ( dxresult != DD_OK )
 801     {
 802         msg_Err( p_vout, "cannot get IDirectDrawSurface2 interface" );
 803         *pp_surface_final = NULL;
 804         return 0;
 805     }
 806
 807     return 1;
 808 }
 809
 810 /*****************************************************************************
 811  * DirectXUpdateOverlay: Move or resize overlay surface on video display.
 812  *****************************************************************************
 813  * This function is used to move or resize an overlay surface on the screen.
 814  * Ususally the overlay is moved by the user and thus, by a move or resize
 815  * event (in Manage).
 816  *****************************************************************************/
 817 void DirectXUpdateOverlay( vout_thread_t *p_vout )
 818 {
 819     DDOVERLAYFX     ddofx;
 820     DWORD           dwFlags;
 821     HRESULT         dxresult;
 822
 823     if( p_vout->p_sys->p_current_surface == NULL ||
 824         !p_vout->p_sys->b_using_overlay )
 825         return;
 826
 827     /* The new window dimensions should already have been computed by the
 828      * caller of this function */
 829
 830     /* Position and show the overlay */
 831     memset(&ddofx, 0, sizeof(DDOVERLAYFX));
 832     ddofx.dwSize = sizeof(DDOVERLAYFX);
 833     ddofx.dckDestColorkey.dwColorSpaceLowValue = p_vout->p_sys->i_colorkey;
 834     ddofx.dckDestColorkey.dwColorSpaceHighValue = p_vout->p_sys->i_colorkey;
 835
 836     dwFlags = DDOVER_SHOW;
 837     if( !p_vout->p_sys->b_caps_overlay_clipping )
 838         dwFlags |= DDOVER_KEYDESTOVERRIDE;
 839
 840     dxresult = IDirectDrawSurface2_UpdateOverlay(
 841                                          p_vout->p_sys->p_current_surface,
 842                                          &p_vout->p_sys->rect_src_clipped,
 843                                          p_vout->p_sys->p_display,
 844                                          &p_vout->p_sys->rect_dest_clipped,
 845                                          dwFlags,
 846                                          &ddofx );
 847     if(dxresult != DD_OK)
 848     {
 849         msg_Warn( p_vout,
 850                   "DirectXUpdateOverlay cannot move or resize overlay" );
 851     }
 852
 853 }
 854
 855 /*****************************************************************************
 856  * DirectXCloseDDraw: Release the DDraw object allocated by DirectXInitDDraw
 857  *****************************************************************************
 858  * This function returns all resources allocated by DirectXInitDDraw.
 859  *****************************************************************************/
 860 static void DirectXCloseDDraw( vout_thread_t *p_vout )
 861 {
 862     msg_Dbg( p_vout, "DirectXCloseDDraw" );
 863     if( p_vout->p_sys->p_ddobject != NULL )
 864     {
 865         IDirectDraw2_Release(p_vout->p_sys->p_ddobject);
 866         p_vout->p_sys->p_ddobject = NULL;
 867     }
 868
 869     if( p_vout->p_sys->hddraw_dll != NULL )
 870     {
 871         FreeLibrary( p_vout->p_sys->hddraw_dll );
 872         p_vout->p_sys->hddraw_dll = NULL;
 873     }
 874 }
 875
 876 /*****************************************************************************
 877  * DirectXCloseDisplay: close and reset the DirectX display device
 878  *****************************************************************************
 879  * This function returns all resources allocated by DirectXCreateDisplay.
 880  *****************************************************************************/
 881 static void DirectXCloseDisplay( vout_thread_t *p_vout )
 882 {
 883     msg_Dbg( p_vout, "DirectXCloseDisplay" );
 884
 885     if( p_vout->p_sys->p_clipper != NULL )
 886     {
 887         msg_Dbg( p_vout, "DirectXCloseDisplay clipper" );
 888         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
 889         p_vout->p_sys->p_clipper = NULL;
 890     }
 891
 892     if( p_vout->p_sys->p_display != NULL )
 893     {
 894         msg_Dbg( p_vout, "DirectXCloseDisplay display" );
 895         IDirectDrawSurface2_Release( p_vout->p_sys->p_display );
 896         p_vout->p_sys->p_display = NULL;
 897     }
 898 }
 899
 900 /*****************************************************************************
 901  * DirectXCloseSurface: close the YUV overlay or RGB surface.
 902  *****************************************************************************
 903  * This function returns all resources allocated for the surface.
 904  *****************************************************************************/
 905 static void DirectXCloseSurface( vout_thread_t *p_vout,
 906                                  LPDIRECTDRAWSURFACE2 p_surface )
 907 {
 908     msg_Dbg( p_vout, "DirectXCloseSurface" );
 909     if( p_surface != NULL )
 910     {
 911         IDirectDrawSurface2_Release( p_surface );
 912     }
 913 }
 914
 915 /*****************************************************************************
 916  * NewPictureVec: allocate a vector of identical pictures
 917  *****************************************************************************
 918  * Returns 0 on success, -1 otherwise
 919  *****************************************************************************/
 920 static int NewPictureVec( vout_thread_t *p_vout, picture_t *p_pic,
 921                           int i_num_pics )
 922 {
 923     int i;
 924     vlc_bool_t b_result_ok;
 925     LPDIRECTDRAWSURFACE2 p_surface;
 926
 927     msg_Dbg( p_vout, "NewPictureVec" );
 928
 929     I_OUTPUTPICTURES = 0;
 930
 931     /* First we try to use an YUV overlay surface.
 932      * The overlay surface that we create won't be used to decode directly
 933      * into it because accessing video memory directly is way to slow (remember
 934      * that pictures are decoded macroblock per macroblock). Instead the video
 935      * will be decoded in picture buffers in system memory which will then be
 936      * memcpy() to the overlay surface. */
 937     if( p_vout->p_sys->b_using_overlay )
 938     {
 939         /* Triple buffering rocks! it doesn't have any processing overhead
 940          * (you don't have to wait for the vsync) and provides for a very nice
 941          * video quality (no tearing). */
 942
 943         b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
 944                                             p_vout->output.i_chroma,
 945                                             p_vout->p_sys->b_using_overlay,
 946                                             2 /* number of backbuffers */ );
 947
 948         if( !b_result_ok )
 949             /* Try to reduce the number of backbuffers */
 950             b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
 951                                                 p_vout->output.i_chroma,
 952                                                 p_vout->p_sys->b_using_overlay,
 953                                                 0 /* number of backbuffers */);
 954
 955         if( b_result_ok )
 956         {
 957             DDSCAPS dds_caps;
 958             picture_t front_pic;
 959             picture_sys_t front_pic_sys;
 960             front_pic.p_sys = &front_pic_sys;
 961
 962             /* Allocate internal structure */
 963             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
 964             if( p_pic[0].p_sys == NULL )
 965             {
 966                 DirectXCloseSurface( p_vout, p_surface );
 967                 return -1;
 968             }
 969
 970             /* set front buffer */
 971             p_pic[0].p_sys->p_front_surface = p_surface;
 972
 973             /* Get the back buffer */
 974             memset( &dds_caps, 0, sizeof( DDSCAPS ) );
 975             dds_caps.dwCaps = DDSCAPS_BACKBUFFER;
 976             if( DD_OK != IDirectDrawSurface2_GetAttachedSurface(
 977                                                 p_surface, &dds_caps,
 978                                                 &p_pic[0].p_sys->p_surface ) )
 979             {
 980                 msg_Warn( p_vout, "NewPictureVec could not get back buffer" );
 981                 /* front buffer is the same as back buffer */
 982                 p_pic[0].p_sys->p_surface = p_surface;
 983             }
 984
 985
 986             p_vout->p_sys->p_current_surface = front_pic.p_sys->p_surface =
 987                 p_pic[0].p_sys->p_front_surface;
 988
 989             /* reset the front buffer memory */
 990             if( DirectXGetSurfaceDesc( &front_pic ) &&
 991                 UpdatePictureStruct( p_vout, &front_pic,
 992                                      p_vout->output.i_chroma ) )
 993             {
 994                 int i,j;
 995                 for( i = 0; i < front_pic.i_planes; i++ )
 996                     for( j = 0; j < front_pic.p[i].i_lines; j++)
 997                         memset( front_pic.p[i].p_pixels + j *
 998                                 front_pic.p[i].i_pitch, 127,
 999                                 front_pic.p[i].i_visible_pitch );
1000             }
1001
1002             DirectXUpdateOverlay( p_vout );
1003             I_OUTPUTPICTURES = 1;
1004             msg_Dbg( p_vout, "DirectX YUV overlay created successfully" );
1005         }
1006     }
1007
1008     /* As we can't have an overlay, we'll try to create a plain offscreen
1009      * surface. This surface will reside in video memory because there's a
1010      * better chance then that we'll be able to use some kind of hardware
1011      * acceleration like rescaling, blitting or YUV->RGB conversions.
1012      * We then only need to blit this surface onto the main display when we
1013      * want to display it */
1014     if( !p_vout->p_sys->b_using_overlay )
1015     {
1016
1017         if( p_vout->p_sys->b_hw_yuv )
1018             b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
1019                                                 p_vout->output.i_chroma,
1020                                                 p_vout->p_sys->b_using_overlay,
1021                                                 0 /* no back buffers */ );
1022
1023         if( !p_vout->p_sys->b_hw_yuv || !b_result_ok )
1024         {
1025             /* Our last choice is to use a plain RGB surface */
1026             DDPIXELFORMAT ddpfPixelFormat;
1027
1028             ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1029             IDirectDrawSurface2_GetPixelFormat( p_vout->p_sys->p_display,
1030                                                 &ddpfPixelFormat );
1031
1032             if( ddpfPixelFormat.dwFlags & DDPF_RGB )
1033             {
1034                 switch( ddpfPixelFormat.dwRGBBitCount )
1035                 {
1036                 case 8: /* FIXME: set the palette */
1037                     p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
1038                     break;
1039                 case 15:
1040                     p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
1041                     break;
1042                 case 16:
1043                     p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
1044                     break;
1045                 case 24:
1046                     p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
1047                     break;
1048                 case 32:
1049                     p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
1050                     break;
1051                 default:
1052                     msg_Err( p_vout, "unknown screen depth" );
1053                     return 0;
1054                 }
1055                 p_vout->output.i_rmask = ddpfPixelFormat.dwRBitMask;
1056                 p_vout->output.i_gmask = ddpfPixelFormat.dwGBitMask;
1057                 p_vout->output.i_bmask = ddpfPixelFormat.dwBBitMask;
1058             }
1059
1060             p_vout->p_sys->b_hw_yuv = 0;
1061
1062             b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
1063                                                 p_vout->output.i_chroma,
1064                                                 p_vout->p_sys->b_using_overlay,
1065                                                 0 /* no back buffers */ );
1066         }
1067
1068         if( b_result_ok )
1069         {
1070             /* Allocate internal structure */
1071             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1072             if( p_pic[0].p_sys == NULL )
1073             {
1074                 DirectXCloseSurface( p_vout, p_surface );
1075                 return -1;
1076             }
1077             p_pic[0].p_sys->p_surface = p_pic[0].p_sys->p_front_surface
1078                 = p_surface;
1079
1080             I_OUTPUTPICTURES = 1;
1081
1082             msg_Dbg( p_vout, "DirectX plain surface created successfully" );
1083         }
1084     }
1085
1086
1087     /* Now that we've got all our direct-buffers, we can finish filling in the
1088      * picture_t structures */
1089     for( i = 0; i < I_OUTPUTPICTURES; i++ )
1090     {
1091         p_pic[i].i_status = DESTROYED_PICTURE;
1092         p_pic[i].i_type   = DIRECT_PICTURE;
1093         PP_OUTPUTPICTURE[i] = &p_pic[i];
1094
1095         if( !DirectXGetSurfaceDesc( &p_pic[i] ) )
1096         {
1097             /* AAARRGG */
1098             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1099             I_OUTPUTPICTURES = 0;
1100             return -1;
1101         }
1102
1103         if( !UpdatePictureStruct(p_vout, &p_pic[i], p_vout->output.i_chroma) )
1104         {
1105
1106             /* Unknown chroma, tell the guy to get lost */
1107             msg_Err( p_vout, "never heard of chroma 0x%.8x (%4.4s)",
1108                      p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma );
1109             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1110             I_OUTPUTPICTURES = 0;
1111             return -1;
1112         }
1113     }
1114
1115     msg_Dbg( p_vout, "End NewPictureVec");
1116     return 0;
1117 }
1118
1119 /*****************************************************************************
1120  * FreePicture: destroy a picture vector allocated with NewPictureVec
1121  *****************************************************************************
1122  *
1123  *****************************************************************************/
1124 static void FreePictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1125                             int i_num_pics )
1126 {
1127     int i;
1128
1129     for( i = 0; i < i_num_pics; i++ )
1130     {
1131         DirectXCloseSurface( p_vout, p_pic[i].p_sys->p_front_surface );
1132
1133         for( i = 0; i < i_num_pics; i++ )
1134         {
1135             free( p_pic[i].p_sys );
1136         }
1137     }
1138 }
1139
1140 /*****************************************************************************
1141  * UpdatePictureStruct: updates the internal data in the picture_t structure
1142  *****************************************************************************
1143  * This will setup stuff for use by the video_output thread
1144  *****************************************************************************/
1145 static int UpdatePictureStruct( vout_thread_t *p_vout, picture_t *p_pic,
1146                                 int i_chroma )
1147 {
1148
1149     switch( p_vout->output.i_chroma )
1150     {
1151         case VLC_FOURCC('R','G','B','2'):
1152         case VLC_FOURCC('R','V','1','5'):
1153         case VLC_FOURCC('R','V','1','6'):
1154         case VLC_FOURCC('R','V','2','4'):
1155         case VLC_FOURCC('R','V','3','2'):
1156             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1157             p_pic->p->i_lines = p_vout->output.i_height;
1158             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1159             switch( p_vout->output.i_chroma )
1160             {
1161                 case VLC_FOURCC('R','G','B','2'):
1162                     p_pic->p->i_pixel_pitch = 1;
1163                     break;
1164                 case VLC_FOURCC('R','V','1','5'):
1165                 case VLC_FOURCC('R','V','1','6'):
1166                     p_pic->p->i_pixel_pitch = 2;
1167                     break;
1168                 case VLC_FOURCC('R','V','2','4'):
1169                 case VLC_FOURCC('R','V','3','2'):
1170                     p_pic->p->i_pixel_pitch = 4;
1171                     break;
1172                 default:
1173                     return -1;
1174             }
1175             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1176               p_pic->p->i_pixel_pitch;
1177             p_pic->i_planes = 1;
1178             break;
1179
1180         case VLC_FOURCC('Y','V','1','2'):
1181
1182             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1183             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1184             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1185             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1186             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1187               p_pic->p[Y_PLANE].i_pixel_pitch;
1188
1189             p_pic->V_PIXELS =  p_pic->Y_PIXELS
1190               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1191             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1192             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1193             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1194             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width *
1195               p_pic->p[V_PLANE].i_pixel_pitch;
1196
1197             p_pic->U_PIXELS = p_pic->V_PIXELS
1198               + p_pic->p[V_PLANE].i_lines * p_pic->p[V_PLANE].i_pitch;
1199             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1200             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1201             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1202             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width *
1203               p_pic->p[U_PLANE].i_pixel_pitch;
1204
1205             p_pic->i_planes = 3;
1206             break;
1207
1208         case VLC_FOURCC('I','Y','U','V'):
1209
1210             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1211             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1212             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1213             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1214             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1215               p_pic->p[Y_PLANE].i_pixel_pitch;
1216
1217             p_pic->U_PIXELS = p_pic->Y_PIXELS
1218               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1219             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1220             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1221             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1222             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width *
1223               p_pic->p[U_PLANE].i_pixel_pitch;
1224
1225             p_pic->V_PIXELS =  p_pic->U_PIXELS
1226               + p_pic->p[U_PLANE].i_lines * p_pic->p[U_PLANE].i_pitch;
1227             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1228             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1229             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1230             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width *
1231               p_pic->p[V_PLANE].i_pixel_pitch;
1232
1233             p_pic->i_planes = 3;
1234             break;
1235
1236         case VLC_FOURCC('Y','U','Y','2'):
1237
1238             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1239             p_pic->p->i_lines = p_vout->output.i_height;
1240             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1241             p_pic->p->i_pixel_pitch = 2;
1242             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1243               p_pic->p->i_pixel_pitch;
1244
1245             p_pic->i_planes = 1;
1246             break;
1247
1248         default:
1249             /* Not supported */
1250             return 0;
1251
1252     }
1253
1254     return 1;
1255 }
1256
1257 /*****************************************************************************
1258  * DirectXGetDDrawCaps: Probe the capabilities of the hardware
1259  *****************************************************************************
1260  * It is nice to know which features are supported by the hardware so we can
1261  * find ways to optimize our rendering.
1262  *****************************************************************************/
1263 static void DirectXGetDDrawCaps( vout_thread_t *p_vout )
1264 {
1265     DDCAPS ddcaps;
1266     HRESULT dxresult;
1267
1268     /* This is just an indication of whether or not we'll support overlay,
1269      * but with this test we don't know if we support YUV overlay */
1270     memset( &ddcaps, 0, sizeof( DDCAPS ));
1271     ddcaps.dwSize = sizeof(DDCAPS);
1272     dxresult = IDirectDraw2_GetCaps( p_vout->p_sys->p_ddobject,
1273                                      &ddcaps, NULL );
1274     if(dxresult != DD_OK )
1275     {
1276         msg_Warn( p_vout, "cannot get caps" );
1277     }
1278     else
1279     {
1280         BOOL bHasOverlay, bHasOverlayFourCC, bCanClipOverlay,
1281              bHasColorKey, bCanStretch;
1282
1283         /* Determine if the hardware supports overlay surfaces */
1284         bHasOverlay = ((ddcaps.dwCaps & DDCAPS_OVERLAY) ==
1285                        DDCAPS_OVERLAY) ? TRUE : FALSE;
1286         /* Determine if the hardware supports overlay surfaces */
1287         bHasOverlayFourCC = ((ddcaps.dwCaps & DDCAPS_OVERLAYFOURCC) ==
1288                        DDCAPS_OVERLAYFOURCC) ? TRUE : FALSE;
1289         /* Determine if the hardware supports overlay surfaces */
1290         bCanClipOverlay = ((ddcaps.dwCaps & DDCAPS_OVERLAYCANTCLIP) ==
1291                        0 ) ? TRUE : FALSE;
1292         /* Determine if the hardware supports colorkeying */
1293         bHasColorKey = ((ddcaps.dwCaps & DDCAPS_COLORKEY) ==
1294                         DDCAPS_COLORKEY) ? TRUE : FALSE;
1295         /* Determine if the hardware supports scaling of the overlay surface */
1296         bCanStretch = ((ddcaps.dwCaps & DDCAPS_OVERLAYSTRETCH) ==
1297                        DDCAPS_OVERLAYSTRETCH) ? TRUE : FALSE;
1298         msg_Dbg( p_vout, "DirectDraw Capabilities: overlay=%i yuvoverlay=%i "
1299                          "can_clip_overlay=%i colorkey=%i stretch=%i",
1300                          bHasOverlay, bHasOverlayFourCC, bCanClipOverlay,
1301                          bHasColorKey, bCanStretch );
1302
1303         /* Overlay clipping support is interesting for us as it means we can
1304          * get rid of the colorkey alltogether */
1305         p_vout->p_sys->b_caps_overlay_clipping = bCanClipOverlay;
1306
1307     }
1308 }
1309
1310 /*****************************************************************************
1311  * DirectXGetSurfaceDesc: Get some more information about the surface
1312  *****************************************************************************
1313  * This function get and stores the surface descriptor which among things
1314  * has the pointer to the picture data.
1315  *****************************************************************************/
1316 static int DirectXGetSurfaceDesc( picture_t *p_pic )
1317 {
1318     HRESULT dxresult;
1319
1320     /* Lock the surface to get a valid pointer to the picture buffer */
1321     memset( &p_pic->p_sys->ddsd, 0, sizeof( DDSURFACEDESC ));
1322     p_pic->p_sys->ddsd.dwSize = sizeof(DDSURFACEDESC);
1323     dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface,
1324                                          NULL, &p_pic->p_sys->ddsd,
1325                                          DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1326                                          NULL );
1327     if ( dxresult == DDERR_SURFACELOST )
1328     {
1329         /* Your surface can be lost so be sure
1330          * to check this and restore it if needed */
1331         dxresult = IDirectDrawSurface2_Restore( p_pic->p_sys->p_surface );
1332         dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1333                                              &p_pic->p_sys->ddsd,
1334                                              DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1335                                              NULL);
1336     }
1337     if( dxresult != DD_OK )
1338     {
1339 //X        msg_Err( p_vout, "DirectXGetSurfaceDesc cannot lock surface" );
1340         return 0;
1341     }
1342
1343     /* Unlock the Surface */
1344     dxresult = IDirectDrawSurface2_Unlock( p_pic->p_sys->p_surface, NULL );
1345
1346     return 1;
1347 }