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

   1 /*****************************************************************************
   2  * vout.c: Windows DirectX video output display method
   3  *****************************************************************************
   4  * Copyright (C) 2001 VideoLAN
   5  * $Id: directx.c,v 1.2 2002/10/05 17:29:50 gbazin Exp $
   6  *
   7  * Authors: Gildas Bazin <gbazin@netcourrier.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble:
  26  *
  27  * This plugin will use YUV overlay if supported, using overlay will result in
  28  * the best video quality (hardware interpolation when rescaling the picture)
  29  * and the fastest display as it requires less processing.
  30  *
  31  * If YUV overlay is not supported this plugin will use RGB offscreen video
  32  * surfaces that will be blitted onto the primary surface (display) to
  33  * effectively display the pictures. This fallback method also enables us to
  34  * display video in window mode.
  35  *
  36  *****************************************************************************/
  37 #include <errno.h>                                                 /* ENOMEM */
  38 #include <stdlib.h>                                                /* free() */
  39 #include <string.h>                                            /* strerror() */
  40
  41 #include <vlc/vlc.h>
  42 #include <vlc/intf.h>
  43 #include <vlc/vout.h>
  44
  45 #include <ddraw.h>
  46
  47 #include "netutils.h"
  48
  49 #include "vout.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  OpenVideo  ( vlc_object_t * );
  64 static void CloseVideo ( vlc_object_t * );
  65
  66 static int  Init      ( vout_thread_t * );
  67 static void End       ( vout_thread_t * );
  68 static int  Manage    ( vout_thread_t * );
  69 static void Display   ( vout_thread_t *, picture_t * );
  70
  71 static int  NewPictureVec  ( vout_thread_t *, picture_t *, int );
  72 static void FreePictureVec ( vout_thread_t *, picture_t *, int );
  73 static int  UpdatePictureStruct( vout_thread_t *, picture_t *, int );
  74
  75 static int  DirectXInitDDraw      ( vout_thread_t *p_vout );
  76 static void DirectXCloseDDraw     ( vout_thread_t *p_vout );
  77 static int  DirectXCreateDisplay  ( vout_thread_t *p_vout );
  78 static void DirectXCloseDisplay   ( vout_thread_t *p_vout );
  79 static int  DirectXCreateSurface  ( vout_thread_t *p_vout,
  80                                     LPDIRECTDRAWSURFACE2 *, int, int, int );
  81 static void DirectXCloseSurface   ( vout_thread_t *p_vout,
  82                                     LPDIRECTDRAWSURFACE2 );
  83 static int  DirectXCreateClipper  ( vout_thread_t *p_vout );
  84 static void DirectXGetDDrawCaps   ( vout_thread_t *p_vout );
  85 static int  DirectXGetSurfaceDesc ( picture_t *p_pic );
  86
  87 /*****************************************************************************
  88  * Module descriptor
  89  *****************************************************************************/
  90 #define HW_YUV_TEXT N_("use hardware YUV->RGB conversions")
  91 #define HW_YUV_LONGTEXT N_( \
  92     "Try to use hardware acceleration for YUV->RGB conversions. " \
  93     "This option doesn't have any effect when using overlays." )
  94 #define SYSMEM_TEXT N_("use video buffers in system memory")
  95 #define SYSMEM_LONGTEXT N_( \
  96     "Create video buffers in system memory instead of video memory. This " \
  97     "isn't recommended as usually using video memory allows to benefit from " \
  98     "more hardware acceleration (like rescaling or YUV->RGB conversions). " \
  99     "This option doesn't have any effect when using overlays." )
 100
 101 vlc_module_begin();
 102     add_category_hint( N_("Video"), NULL );
 103     add_bool( "directx-hw-yuv", 1, NULL, HW_YUV_TEXT, HW_YUV_LONGTEXT );
 104     add_bool( "directx-use-sysmem", 0, NULL, SYSMEM_TEXT, SYSMEM_LONGTEXT );
 105     set_description( _("DirectX video module") );
 106     set_capability( "video output", 100 );
 107     set_callbacks( OpenVideo, CloseVideo );
 108 vlc_module_end();
 109
 110 #if 0 /* FIXME */
 111     /* check if we registered a window class because we need to
 112      * unregister it */
 113     WNDCLASS wndclass;
 114     if( GetClassInfo( GetModuleHandle(NULL), "VLC DirectX", &wndclass ) )
 115         UnregisterClass( "VLC DirectX", GetModuleHandle(NULL) );
 116 #endif
 117
 118 /*****************************************************************************
 119  * OpenVideo: allocate DirectX video thread output method
 120  *****************************************************************************
 121  * This function allocates and initialize the DirectX vout method.
 122  *****************************************************************************/
 123 static int OpenVideo( vlc_object_t *p_this )
 124 {
 125     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 126
 127     /* Allocate structure */
 128     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 129     if( p_vout->p_sys == NULL )
 130     {
 131         msg_Err( p_vout, "out of memory" );
 132         return 1;
 133     }
 134
 135     /* Initialisations */
 136     p_vout->pf_init = Init;
 137     p_vout->pf_end = End;
 138     p_vout->pf_manage = Manage;
 139     p_vout->pf_render = NULL;
 140     p_vout->pf_display = Display;
 141
 142     p_vout->p_sys->p_ddobject = NULL;
 143     p_vout->p_sys->p_display = NULL;
 144     p_vout->p_sys->p_current_surface = NULL;
 145     p_vout->p_sys->p_clipper = NULL;
 146     p_vout->p_sys->hbrush = NULL;
 147     p_vout->p_sys->hwnd = NULL;
 148     p_vout->p_sys->i_changes = 0;
 149     p_vout->p_sys->b_caps_overlay_clipping = 0;
 150     SetRectEmpty( &p_vout->p_sys->rect_display );
 151     p_vout->p_sys->b_using_overlay = config_GetInt( p_vout, "overlay" );
 152     p_vout->p_sys->b_use_sysmem = config_GetInt( p_vout, "directx-use-sysmem");
 153     p_vout->p_sys->b_hw_yuv = config_GetInt( p_vout, "directx-hw-yuv" );
 154
 155     p_vout->p_sys->b_cursor_hidden = 0;
 156     p_vout->p_sys->i_lastmoved = mdate();
 157
 158     /* Set main window's size */
 159     p_vout->p_sys->i_window_width = p_vout->i_window_width;
 160     p_vout->p_sys->i_window_height = p_vout->i_window_height;
 161
 162     /* Create the DirectXEventThread, this thread is created by us to isolate
 163      * the Win32 PeekMessage function calls. We want to do this because
 164      * Windows can stay blocked inside this call for a long time, and when
 165      * this happens it thus blocks vlc's video_output thread.
 166      * DirectXEventThread will take care of the creation of the video
 167      * window (because PeekMessage has to be called from the same thread which
 168      * created the window). */
 169     msg_Dbg( p_vout, "creating DirectXEventThread" );
 170     p_vout->p_sys->p_event =
 171         vlc_object_create( p_vout, sizeof(event_thread_t) );
 172     p_vout->p_sys->p_event->p_vout = p_vout;
 173     if( vlc_thread_create( p_vout->p_sys->p_event,
 174                            "DirectX Events Thread", DirectXEventThread,
 175                            VLC_THREAD_PRIORITY_LOW, 1 ) )
 176     {
 177         msg_Err( p_vout, "cannot create DirectXEventThread" );
 178         vlc_object_destroy( p_vout->p_sys->p_event );
 179         p_vout->p_sys->p_event = NULL;
 180         goto error;
 181     }
 182
 183     if( p_vout->p_sys->p_event->b_error )
 184     {
 185         msg_Err( p_vout, "DirectXEventThread failed" );
 186         goto error;
 187     }
 188
 189     vlc_object_attach( p_vout->p_sys->p_event, p_vout );
 190
 191     msg_Dbg( p_vout, "DirectXEventThread running" );
 192
 193     /* Initialise DirectDraw */
 194     if( DirectXInitDDraw( p_vout ) )
 195     {
 196         msg_Err( p_vout, "cannot initialize DirectDraw" );
 197         goto error;
 198     }
 199
 200     /* Create the directx display */
 201     if( DirectXCreateDisplay( p_vout ) )
 202     {
 203         msg_Err( p_vout, "cannot initialize DirectDraw" );
 204         goto error;
 205     }
 206
 207     return 0;
 208
 209  error:
 210     CloseVideo( VLC_OBJECT(p_vout) );
 211     return 1;
 212
 213 }
 214
 215 /*****************************************************************************
 216  * Init: initialize DirectX video thread output method
 217  *****************************************************************************
 218  * This function create the directx surfaces needed by the output thread.
 219  * It is called at the beginning of the thread.
 220  *****************************************************************************/
 221 static int Init( vout_thread_t *p_vout )
 222 {
 223     int i_chroma_backup;
 224
 225     /* Initialize the output structure.
 226      * Since DirectDraw can do rescaling for us, stick to the default
 227      * coordinates and aspect. */
 228     p_vout->output.i_width  = p_vout->render.i_width;
 229     p_vout->output.i_height = p_vout->render.i_height;
 230     p_vout->output.i_aspect = p_vout->render.i_aspect;
 231
 232 #define MAX_DIRECTBUFFERS 1
 233     /* Right now we use only 1 directbuffer because we don't want the
 234      * video decoder to decode directly into direct buffers as they are
 235      * created into video memory and video memory is _really_ slow */
 236
 237     /* Choose the chroma we will try first. */
 238     switch( p_vout->render.i_chroma )
 239     {
 240         case VLC_FOURCC('Y','U','Y','2'):
 241         case VLC_FOURCC('Y','U','N','V'):
 242             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 243             break;
 244         case VLC_FOURCC('U','Y','V','Y'):
 245         case VLC_FOURCC('U','Y','N','V'):
 246         case VLC_FOURCC('Y','4','2','2'):
 247             p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
 248             break;
 249         case VLC_FOURCC('Y','V','Y','U'):
 250             p_vout->output.i_chroma = VLC_FOURCC('Y','V','Y','U');
 251             break;
 252         default:
 253             p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 254             break;
 255     }
 256
 257     NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 258
 259     i_chroma_backup = p_vout->output.i_chroma;
 260
 261     if( !I_OUTPUTPICTURES )
 262     {
 263         /* hmmm, it didn't work! Let's try commonly supported chromas */
 264         p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 265         NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 266         if( !I_OUTPUTPICTURES )
 267         {
 268             /* hmmm, it didn't work! Let's try commonly supported chromas */
 269             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 270             NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 271         }
 272     }
 273
 274     if( !I_OUTPUTPICTURES )
 275     {
 276         /* If it still didn't work then don't try to use an overlay */
 277         p_vout->output.i_chroma = i_chroma_backup;
 278         p_vout->p_sys->b_using_overlay = 0;
 279         NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 280     }
 281
 282     /* Change the window title bar text */
 283     if( p_vout->p_sys->b_using_overlay )
 284         SetWindowText( p_vout->p_sys->hwnd,
 285                        VOUT_TITLE " (hardware YUV overlay DirectX output)" );
 286     else if( p_vout->p_sys->b_hw_yuv )
 287         SetWindowText( p_vout->p_sys->hwnd,
 288                        VOUT_TITLE " (hardware YUV DirectX output)" );
 289     else SetWindowText( p_vout->p_sys->hwnd,
 290                         VOUT_TITLE " (software RGB DirectX output)" );
 291
 292     return 0;
 293 }
 294
 295 /*****************************************************************************
 296  * End: terminate Sys video thread output method
 297  *****************************************************************************
 298  * Terminate an output method created by Create.
 299  * It is called at the end of the thread.
 300  *****************************************************************************/
 301 static void End( vout_thread_t *p_vout )
 302 {
 303     FreePictureVec( p_vout, p_vout->p_picture, I_OUTPUTPICTURES );
 304     return;
 305 }
 306
 307 /*****************************************************************************
 308  * CloseVideo: destroy Sys video thread output method
 309  *****************************************************************************
 310  * Terminate an output method created by Create
 311  *****************************************************************************/
 312 static void CloseVideo( vlc_object_t *p_this )
 313 {
 314     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 315
 316     msg_Dbg( p_vout, "CloseVideo" );
 317
 318     DirectXCloseDisplay( p_vout );
 319     DirectXCloseDDraw( p_vout );
 320
 321     if( p_vout->p_sys->p_event )
 322     {
 323         vlc_object_detach( p_vout->p_sys->p_event );
 324
 325         /* Kill DirectXEventThread */
 326         p_vout->p_sys->p_event->b_die = 1;
 327
 328         /* we need to be sure DirectXEventThread won't stay stuck in
 329          * GetMessage, so we send a fake message */
 330         if( p_vout->p_sys->hwnd )
 331             PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0);
 332
 333         vlc_thread_join( p_vout->p_sys->p_event );
 334         vlc_object_destroy( p_vout->p_sys->p_event );
 335     }
 336
 337     if( p_vout->p_sys )
 338     {
 339         free( p_vout->p_sys );
 340         p_vout->p_sys = NULL;
 341     }
 342 }
 343
 344 /*****************************************************************************
 345  * Manage: handle Sys events
 346  *****************************************************************************
 347  * This function should be called regularly by the video output thread.
 348  * It returns a non null value if an error occured.
 349  *****************************************************************************/
 350 static int Manage( vout_thread_t *p_vout )
 351 {
 352     WINDOWPLACEMENT window_placement;
 353
 354     /* We used to call the Win32 PeekMessage function here to read the window
 355      * messages. But since window can stay blocked into this function for a
 356      * long time (for example when you move your window on the screen), I
 357      * decided to isolate PeekMessage in another thread. */
 358
 359     /*
 360      * Scale Change
 361      */
 362     if( p_vout->i_changes & VOUT_SCALE_CHANGE
 363         || p_vout->p_sys->i_changes & VOUT_SCALE_CHANGE)
 364     {
 365         msg_Dbg( p_vout, "Scale Change" );
 366         if( !p_vout->p_sys->b_using_overlay )
 367             InvalidateRect( p_vout->p_sys->hwnd, NULL, TRUE );
 368         else
 369             DirectXUpdateOverlay( p_vout );
 370         p_vout->i_changes &= ~VOUT_SCALE_CHANGE;
 371         p_vout->p_sys->i_changes &= ~VOUT_SCALE_CHANGE;
 372     }
 373
 374     /*
 375      * Size Change
 376      */
 377     if( p_vout->i_changes & VOUT_SIZE_CHANGE
 378         || p_vout->p_sys->i_changes & VOUT_SIZE_CHANGE )
 379     {
 380         msg_Dbg( p_vout, "Size Change" );
 381         if( !p_vout->p_sys->b_using_overlay )
 382             InvalidateRect( p_vout->p_sys->hwnd, NULL, TRUE );
 383         else
 384             DirectXUpdateOverlay( p_vout );
 385         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 386         p_vout->p_sys->i_changes &= ~VOUT_SIZE_CHANGE;
 387     }
 388
 389     /*
 390      * Fullscreen change
 391      */
 392     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
 393         || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
 394     {
 395         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 396
 397         /* We need to switch between Maximized and Normal sized window */
 398         window_placement.length = sizeof(WINDOWPLACEMENT);
 399         GetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 400         if( p_vout->b_fullscreen )
 401         {
 402             /* Maximized window */
 403             window_placement.showCmd = SW_SHOWMAXIMIZED;
 404             /* Change window style, no borders and no title bar */
 405             SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE, 0 );
 406
 407         }
 408         else
 409         {
 410             /* Normal window */
 411             window_placement.showCmd = SW_SHOWNORMAL;
 412             /* Change window style, borders and title bar */
 413             SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE,
 414                            WS_OVERLAPPEDWINDOW | WS_SIZEBOX | WS_VISIBLE );
 415         }
 416
 417         SetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 418
 419         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 420         p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 421     }
 422
 423     /*
 424      * Pointer change
 425      */
 426     if( (!p_vout->p_sys->b_cursor_hidden) &&
 427         ( (mdate() - p_vout->p_sys->i_lastmoved) > 5000000 ) )
 428     {
 429         /* Hide the mouse automatically */
 430         p_vout->p_sys->b_cursor_hidden = 1;
 431         PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
 432     }
 433
 434     /* Check if the event thread is still running */
 435     if( p_vout->p_sys->p_event->b_die )
 436         return 1; /* exit */
 437
 438     return 0;
 439 }
 440
 441 /*****************************************************************************
 442  * Display: displays previously rendered output
 443  *****************************************************************************
 444  * This function sends the currently rendered image to the display, wait until
 445  * it is displayed and switch the two rendering buffers, preparing next frame.
 446  *****************************************************************************/
 447 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 448 {
 449     HRESULT dxresult;
 450
 451     if( (p_vout->p_sys->p_display == NULL) )
 452     {
 453         msg_Warn( p_vout, "no display!!" );
 454         return;
 455     }
 456
 457     if( !p_vout->p_sys->b_using_overlay )
 458     {
 459         DDBLTFX  ddbltfx;
 460
 461         /* We ask for the "NOTEARING" option */
 462         memset( &ddbltfx, 0, sizeof(DDBLTFX) );
 463         ddbltfx.dwSize = sizeof(DDBLTFX);
 464         ddbltfx.dwDDFX = DDBLTFX_NOTEARING;
 465
 466         /* Blit video surface to display */
 467         dxresult = IDirectDrawSurface2_Blt(p_vout->p_sys->p_display,
 468                                            &p_vout->p_sys->rect_dest_clipped,
 469                                            p_pic->p_sys->p_surface,
 470                                            &p_vout->p_sys->rect_src_clipped,
 471                                            DDBLT_ASYNC, &ddbltfx );
 472         if ( dxresult == DDERR_SURFACELOST )
 473         {
 474             /* Our surface can be lost so be sure
 475              * to check this and restore it if needed */
 476             IDirectDrawSurface2_Restore( p_vout->p_sys->p_display );
 477
 478             /* Now that the surface has been restored try to display again */
 479             dxresult = IDirectDrawSurface2_Blt(p_vout->p_sys->p_display,
 480                                            &p_vout->p_sys->rect_dest_clipped,
 481                                            p_pic->p_sys->p_surface,
 482                                            &p_vout->p_sys->rect_src_clipped,
 483                                            DDBLT_ASYNC, &ddbltfx );
 484         }
 485
 486         if( dxresult != DD_OK )
 487         {
 488             msg_Warn( p_vout, "could not Blit the surface" );
 489             return;
 490         }
 491
 492     }
 493     else /* using overlay */
 494     {
 495
 496         /* Flip the overlay buffers if we are using back buffers */
 497         if( p_pic->p_sys->p_front_surface == p_pic->p_sys->p_surface )
 498             return;
 499
 500         dxresult = IDirectDrawSurface2_Flip( p_pic->p_sys->p_front_surface,
 501                                              NULL, DDFLIP_WAIT );
 502         if ( dxresult == DDERR_SURFACELOST )
 503         {
 504             /* Our surface can be lost so be sure
 505              * to check this and restore it if needed */
 506             IDirectDrawSurface2_Restore( p_vout->p_sys->p_display );
 507             IDirectDrawSurface2_Restore( p_pic->p_sys->p_front_surface );
 508
 509             /* Now that the surface has been restored try to display again */
 510             dxresult = IDirectDrawSurface2_Flip( p_pic->p_sys->p_front_surface,
 511                                                  NULL, DDFLIP_WAIT );
 512             DirectXUpdateOverlay( p_vout );
 513         }
 514
 515         if( dxresult != DD_OK )
 516             msg_Warn( p_vout, "could not flip overlay surface" );
 517
 518         if( !DirectXGetSurfaceDesc( p_pic ) )
 519         {
 520             /* AAARRGG */
 521             msg_Err( p_vout, "cannot get surface desc" );
 522             return;
 523         }
 524
 525         if( !UpdatePictureStruct( p_vout, p_pic, p_vout->output.i_chroma ) )
 526         {
 527             /* AAARRGG */
 528             msg_Err( p_vout, "invalid pic chroma" );
 529             return;
 530         }
 531
 532         /* set currently displayed pic */
 533         p_vout->p_sys->p_current_surface = p_pic->p_sys->p_front_surface;
 534     }
 535
 536 }
 537
 538
 539 /* following functions are local */
 540
 541 /*****************************************************************************
 542  * DirectXInitDDraw: Takes care of all the DirectDraw initialisations
 543  *****************************************************************************
 544  * This function initialise and allocate resources for DirectDraw.
 545  *****************************************************************************/
 546 static int DirectXInitDDraw( vout_thread_t *p_vout )
 547 {
 548     HRESULT    dxresult;
 549     HRESULT    (WINAPI *OurDirectDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *);
 550     LPDIRECTDRAW  p_ddobject;
 551
 552     msg_Dbg( p_vout, "DirectXInitDDraw" );
 553
 554     /* load direct draw DLL */
 555     p_vout->p_sys->hddraw_dll = LoadLibrary("DDRAW.DLL");
 556     if( p_vout->p_sys->hddraw_dll == NULL )
 557     {
 558         msg_Warn( p_vout, "DirectXInitDDraw failed loading ddraw.dll" );
 559         goto error;
 560     }
 561
 562     OurDirectDrawCreate =
 563       (void *)GetProcAddress(p_vout->p_sys->hddraw_dll, "DirectDrawCreate");
 564     if ( OurDirectDrawCreate == NULL )
 565     {
 566         msg_Err( p_vout, "DirectXInitDDraw failed GetProcAddress" );
 567         goto error;
 568     }
 569
 570     /* Initialize DirectDraw now */
 571     dxresult = OurDirectDrawCreate( NULL, &p_ddobject, NULL );
 572     if( dxresult != DD_OK )
 573     {
 574         msg_Err( p_vout, "DirectXInitDDraw cannot initialize DDraw" );
 575         goto error;
 576     }
 577
 578     /* Get the IDirectDraw2 interface */
 579     dxresult = IDirectDraw_QueryInterface( p_ddobject, &IID_IDirectDraw2,
 580                                         (LPVOID *)&p_vout->p_sys->p_ddobject );
 581     /* Release the unused interface */
 582     IDirectDraw_Release( p_ddobject );
 583     if( dxresult != DD_OK )
 584     {
 585         msg_Err( p_vout, "cannot get IDirectDraw2 interface" );
 586         goto error;
 587     }
 588
 589     /* Set DirectDraw Cooperative level, ie what control we want over Windows
 590      * display */
 591     dxresult = IDirectDraw2_SetCooperativeLevel( p_vout->p_sys->p_ddobject,
 592                                            p_vout->p_sys->hwnd, DDSCL_NORMAL );
 593     if( dxresult != DD_OK )
 594     {
 595         msg_Err( p_vout, "cannot set direct draw cooperative level" );
 596         goto error;
 597     }
 598
 599     /* Probe the capabilities of the hardware */
 600     DirectXGetDDrawCaps( p_vout );
 601
 602     msg_Dbg( p_vout, "End DirectXInitDDraw" );
 603     return 0;
 604
 605  error:
 606     if( p_vout->p_sys->p_ddobject )
 607         IDirectDraw2_Release( p_vout->p_sys->p_ddobject );
 608     if( p_vout->p_sys->hddraw_dll )
 609         FreeLibrary( p_vout->p_sys->hddraw_dll );
 610     p_vout->p_sys->hddraw_dll = NULL;
 611     p_vout->p_sys->p_ddobject = NULL;
 612     return 1;
 613 }
 614
 615 /*****************************************************************************
 616  * DirectXCreateDisplay: create the DirectDraw display.
 617  *****************************************************************************
 618  * Create and initialize display according to preferences specified in the vout
 619  * thread fields.
 620  *****************************************************************************/
 621 static int DirectXCreateDisplay( vout_thread_t *p_vout )
 622 {
 623     HRESULT              dxresult;
 624     DDSURFACEDESC        ddsd;
 625     LPDIRECTDRAWSURFACE  p_display;
 626     DDPIXELFORMAT   pixel_format;
 627
 628     msg_Dbg( p_vout, "DirectXCreateDisplay" );
 629
 630     /* Now get the primary surface. This surface is what you actually see
 631      * on your screen */
 632     memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 633     ddsd.dwSize = sizeof(DDSURFACEDESC);
 634     ddsd.dwFlags = DDSD_CAPS;
 635     ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
 636
 637     dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 638                                            &ddsd,
 639                                            &p_display, NULL );
 640     if( dxresult != DD_OK )
 641     {
 642         msg_Err( p_vout, "cannot get direct draw primary surface" );
 643         return 1;
 644     }
 645
 646     dxresult = IDirectDrawSurface_QueryInterface( p_display,
 647                                          &IID_IDirectDrawSurface2,
 648                                          (LPVOID *)&p_vout->p_sys->p_display );
 649     /* Release the old interface */
 650     IDirectDrawSurface_Release( p_display );
 651     if ( dxresult != DD_OK )
 652     {
 653         msg_Err( p_vout, "cannot get IDirectDrawSurface2 interface" );
 654         return 1;
 655     }
 656
 657     /* The clipper will be used only in non-overlay mode */
 658     DirectXCreateClipper( p_vout );
 659
 660
 661 #if 1
 662     /* compute the colorkey pixel value from the RGB value we've got */
 663     memset( &pixel_format, 0, sizeof( DDPIXELFORMAT ));
 664     pixel_format.dwSize = sizeof( DDPIXELFORMAT );
 665     dxresult = IDirectDrawSurface2_GetPixelFormat( p_vout->p_sys->p_display,
 666                                                    &pixel_format );
 667     if( dxresult != DD_OK )
 668         msg_Warn( p_vout, "DirectXUpdateOverlay GetPixelFormat failed" );
 669     p_vout->p_sys->i_colorkey = (DWORD)((( p_vout->p_sys->i_rgb_colorkey
 670                                            * pixel_format.dwRBitMask) / 255)
 671                                         & pixel_format.dwRBitMask);
 672 #endif
 673
 674     return 0;
 675 }
 676
 677
 678 /*****************************************************************************
 679  * DirectXCreateClipper: Create a clipper that will be used when blitting the
 680  *                       RGB surface to the main display.
 681  *****************************************************************************
 682  * This clipper prevents us to modify by mistake anything on the screen
 683  * which doesn't belong to our window. For example when a part of our video
 684  * window is hidden by another window.
 685  *****************************************************************************/
 686 static int DirectXCreateClipper( vout_thread_t *p_vout )
 687 {
 688     HRESULT dxresult;
 689
 690     msg_Dbg( p_vout, "DirectXCreateClipper" );
 691
 692     /* Create the clipper */
 693     dxresult = IDirectDraw2_CreateClipper( p_vout->p_sys->p_ddobject, 0,
 694                                            &p_vout->p_sys->p_clipper, NULL );
 695     if( dxresult != DD_OK )
 696     {
 697         msg_Warn( p_vout, "DirectXCreateClipper cannot create clipper" );
 698         goto error;
 699     }
 700
 701     /* associate the clipper to the window */
 702     dxresult = IDirectDrawClipper_SetHWnd(p_vout->p_sys->p_clipper, 0,
 703                                           p_vout->p_sys->hwnd);
 704     if( dxresult != DD_OK )
 705     {
 706         msg_Warn( p_vout,
 707                   "DirectXCreateClipper cannot attach clipper to window" );
 708         goto error;
 709     }
 710
 711     /* associate the clipper with the surface */
 712     dxresult = IDirectDrawSurface_SetClipper(p_vout->p_sys->p_display,
 713                                              p_vout->p_sys->p_clipper);
 714     if( dxresult != DD_OK )
 715     {
 716         msg_Warn( p_vout,
 717                   "DirectXCreateClipper cannot attach clipper to surface" );
 718         goto error;
 719     }
 720
 721     return 0;
 722
 723  error:
 724     if( p_vout->p_sys->p_clipper )
 725         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
 726     p_vout->p_sys->p_clipper = NULL;
 727     return 1;
 728
 729 }
 730
 731 /*****************************************************************************
 732  * DirectXCreateSurface: create an YUV overlay or RGB surface for the video.
 733  *****************************************************************************
 734  * The best method of display is with an YUV overlay because the YUV->RGB
 735  * conversion is done in hardware.
 736  * You can also create a plain RGB surface.
 737  * ( Maybe we could also try an RGB overlay surface, which could have hardware
 738  * scaling and which would also be faster in window mode because you don't
 739  * need to do any blitting to the main display...)
 740  *****************************************************************************/
 741 static int DirectXCreateSurface( vout_thread_t *p_vout,
 742                                  LPDIRECTDRAWSURFACE2 *pp_surface_final,
 743                                  int i_chroma, int b_overlay,
 744                                  int i_backbuffers )
 745 {
 746     HRESULT dxresult;
 747     LPDIRECTDRAWSURFACE p_surface;
 748     DDSURFACEDESC ddsd;
 749
 750     /* Create the video surface */
 751     if( b_overlay )
 752     {
 753         /* Now try to create the YUV overlay surface.
 754          * This overlay will be displayed on top of the primary surface.
 755          * A color key is used to determine whether or not the overlay will be
 756          * displayed, ie the overlay will be displayed in place of the primary
 757          * surface wherever the primary surface will have this color.
 758          * The video window has been created with a background of this color so
 759          * the overlay will be only displayed on top of this window */
 760
 761         memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 762         ddsd.dwSize = sizeof(DDSURFACEDESC);
 763         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
 764         ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
 765         ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
 766         ddsd.dwFlags = DDSD_CAPS |
 767                        DDSD_HEIGHT |
 768                        DDSD_WIDTH |
 769                        DDSD_PIXELFORMAT;
 770         ddsd.dwFlags |= (i_backbuffers ? DDSD_BACKBUFFERCOUNT : 0);
 771         ddsd.ddsCaps.dwCaps = DDSCAPS_OVERLAY |
 772                               DDSCAPS_VIDEOMEMORY;
 773         ddsd.ddsCaps.dwCaps |= (i_backbuffers ? DDSCAPS_COMPLEX | DDSCAPS_FLIP
 774                                 : 0 );
 775         ddsd.dwHeight = p_vout->render.i_height;
 776         ddsd.dwWidth = p_vout->render.i_width;
 777         ddsd.dwBackBufferCount = i_backbuffers;
 778
 779         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 780                                                &ddsd,
 781                                                &p_surface, NULL );
 782         if( dxresult != DD_OK )
 783         {
 784             *pp_surface_final = NULL;
 785             return 0;
 786         }
 787     }
 788
 789     if( !b_overlay )
 790     {
 791         vlc_bool_t b_rgb_surface =
 792             ( i_chroma == VLC_FOURCC('R','G','B','2') )
 793           || ( i_chroma == VLC_FOURCC('R','V','1','5') )
 794            || ( i_chroma == VLC_FOURCC('R','V','1','6') )
 795             || ( i_chroma == VLC_FOURCC('R','V','2','4') )
 796              || ( i_chroma == VLC_FOURCC('R','V','3','2') );
 797
 798         memset( &ddsd, 0, sizeof( DDSURFACEDESC ) );
 799         ddsd.dwSize = sizeof(DDSURFACEDESC);
 800         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
 801         ddsd.dwFlags = DDSD_HEIGHT |
 802                        DDSD_WIDTH |
 803                        DDSD_CAPS;
 804         ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
 805         ddsd.dwHeight = p_vout->render.i_height;
 806         ddsd.dwWidth = p_vout->render.i_width;
 807
 808         if( p_vout->p_sys->b_use_sysmem )
 809             ddsd.ddsCaps.dwCaps |= DDSCAPS_SYSTEMMEMORY;
 810         else
 811             ddsd.ddsCaps.dwCaps |= DDSCAPS_VIDEOMEMORY;
 812
 813         if( !b_rgb_surface )
 814         {
 815             ddsd.dwFlags |= DDSD_PIXELFORMAT;
 816             ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
 817             ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
 818         }
 819
 820         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 821                                                &ddsd,
 822                                                &p_surface, NULL );
 823         if( dxresult != DD_OK )
 824         {
 825             *pp_surface_final = NULL;
 826             return 0;
 827         }
 828     }
 829
 830     /* Now that the surface is created, try to get a newer DirectX interface */
 831     dxresult = IDirectDrawSurface_QueryInterface( p_surface,
 832                                      &IID_IDirectDrawSurface2,
 833                                      (LPVOID *)pp_surface_final );
 834     IDirectDrawSurface_Release( p_surface );    /* Release the old interface */
 835     if ( dxresult != DD_OK )
 836     {
 837         msg_Err( p_vout, "cannot get IDirectDrawSurface2 interface" );
 838         *pp_surface_final = NULL;
 839         return 0;
 840     }
 841
 842     return 1;
 843 }
 844
 845 /*****************************************************************************
 846  * DirectXUpdateOverlay: Move or resize overlay surface on video display.
 847  *****************************************************************************
 848  * This function is used to move or resize an overlay surface on the screen.
 849  * Ususally the overlay is moved by the user and thus, by a move or resize
 850  * event (in Manage).
 851  *****************************************************************************/
 852 void DirectXUpdateOverlay( vout_thread_t *p_vout )
 853 {
 854     DDOVERLAYFX     ddofx;
 855     DWORD           dwFlags;
 856     HRESULT         dxresult;
 857
 858     if( p_vout->p_sys->p_current_surface == NULL ||
 859         !p_vout->p_sys->b_using_overlay )
 860         return;
 861
 862     /* The new window dimensions should already have been computed by the
 863      * caller of this function */
 864
 865     /* Position and show the overlay */
 866     memset(&ddofx, 0, sizeof(DDOVERLAYFX));
 867     ddofx.dwSize = sizeof(DDOVERLAYFX);
 868     ddofx.dckDestColorkey.dwColorSpaceLowValue = p_vout->p_sys->i_colorkey;
 869     ddofx.dckDestColorkey.dwColorSpaceHighValue = p_vout->p_sys->i_colorkey;
 870
 871     dwFlags = DDOVER_SHOW;
 872     if( !p_vout->p_sys->b_caps_overlay_clipping )
 873         dwFlags |= DDOVER_KEYDESTOVERRIDE;
 874
 875     dxresult = IDirectDrawSurface2_UpdateOverlay(
 876                                          p_vout->p_sys->p_current_surface,
 877                                          &p_vout->p_sys->rect_src_clipped,
 878                                          p_vout->p_sys->p_display,
 879                                          &p_vout->p_sys->rect_dest_clipped,
 880                                          dwFlags,
 881                                          &ddofx );
 882     if(dxresult != DD_OK)
 883     {
 884         msg_Warn( p_vout,
 885                   "DirectXUpdateOverlay cannot move or resize overlay" );
 886     }
 887
 888 }
 889
 890 /*****************************************************************************
 891  * DirectXCloseDDraw: Release the DDraw object allocated by DirectXInitDDraw
 892  *****************************************************************************
 893  * This function returns all resources allocated by DirectXInitDDraw.
 894  *****************************************************************************/
 895 static void DirectXCloseDDraw( vout_thread_t *p_vout )
 896 {
 897     msg_Dbg( p_vout, "DirectXCloseDDraw" );
 898     if( p_vout->p_sys->p_ddobject != NULL )
 899     {
 900         IDirectDraw2_Release(p_vout->p_sys->p_ddobject);
 901         p_vout->p_sys->p_ddobject = NULL;
 902     }
 903
 904     if( p_vout->p_sys->hddraw_dll != NULL )
 905     {
 906         FreeLibrary( p_vout->p_sys->hddraw_dll );
 907         p_vout->p_sys->hddraw_dll = NULL;
 908     }
 909 }
 910
 911 /*****************************************************************************
 912  * DirectXCloseDisplay: close and reset the DirectX display device
 913  *****************************************************************************
 914  * This function returns all resources allocated by DirectXCreateDisplay.
 915  *****************************************************************************/
 916 static void DirectXCloseDisplay( vout_thread_t *p_vout )
 917 {
 918     msg_Dbg( p_vout, "DirectXCloseDisplay" );
 919
 920     if( p_vout->p_sys->p_clipper != NULL )
 921     {
 922         msg_Dbg( p_vout, "DirectXCloseDisplay clipper" );
 923         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
 924         p_vout->p_sys->p_clipper = NULL;
 925     }
 926
 927     if( p_vout->p_sys->p_display != NULL )
 928     {
 929         msg_Dbg( p_vout, "DirectXCloseDisplay display" );
 930         IDirectDrawSurface2_Release( p_vout->p_sys->p_display );
 931         p_vout->p_sys->p_display = NULL;
 932     }
 933 }
 934
 935 /*****************************************************************************
 936  * DirectXCloseSurface: close the YUV overlay or RGB surface.
 937  *****************************************************************************
 938  * This function returns all resources allocated for the surface.
 939  *****************************************************************************/
 940 static void DirectXCloseSurface( vout_thread_t *p_vout,
 941                                  LPDIRECTDRAWSURFACE2 p_surface )
 942 {
 943     msg_Dbg( p_vout, "DirectXCloseSurface" );
 944     if( p_surface != NULL )
 945     {
 946         IDirectDrawSurface2_Release( p_surface );
 947     }
 948 }
 949
 950 /*****************************************************************************
 951  * NewPictureVec: allocate a vector of identical pictures
 952  *****************************************************************************
 953  * Returns 0 on success, -1 otherwise
 954  *****************************************************************************/
 955 static int NewPictureVec( vout_thread_t *p_vout, picture_t *p_pic,
 956                           int i_num_pics )
 957 {
 958     int i;
 959     vlc_bool_t b_result_ok;
 960     LPDIRECTDRAWSURFACE2 p_surface;
 961
 962     msg_Dbg( p_vout, "NewPictureVec" );
 963
 964     I_OUTPUTPICTURES = 0;
 965
 966     /* First we try to use an YUV overlay surface.
 967      * The overlay surface that we create won't be used to decode directly
 968      * into it because accessing video memory directly is way to slow (remember
 969      * that pictures are decoded macroblock per macroblock). Instead the video
 970      * will be decoded in picture buffers in system memory which will then be
 971      * memcpy() to the overlay surface. */
 972     if( p_vout->p_sys->b_using_overlay )
 973     {
 974         /* Triple buffering rocks! it doesn't have any processing overhead
 975          * (you don't have to wait for the vsync) and provides for a very nice
 976          * video quality (no tearing). */
 977
 978         b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
 979                                             p_vout->output.i_chroma,
 980                                             p_vout->p_sys->b_using_overlay,
 981                                             2 /* number of backbuffers */ );
 982
 983         if( !b_result_ok )
 984             /* Try to reduce the number of backbuffers */
 985             b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
 986                                                 p_vout->output.i_chroma,
 987                                                 p_vout->p_sys->b_using_overlay,
 988                                                 0 /* number of backbuffers */);
 989
 990         if( b_result_ok )
 991         {
 992             DDSCAPS dds_caps;
 993             picture_t front_pic;
 994             picture_sys_t front_pic_sys;
 995             front_pic.p_sys = &front_pic_sys;
 996
 997             /* Allocate internal structure */
 998             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
 999             if( p_pic[0].p_sys == NULL )
1000             {
1001                 DirectXCloseSurface( p_vout, p_surface );
1002                 return -1;
1003             }
1004
1005             /* set front buffer */
1006             p_pic[0].p_sys->p_front_surface = p_surface;
1007
1008             /* Get the back buffer */
1009             memset( &dds_caps, 0, sizeof( DDSCAPS ) );
1010             dds_caps.dwCaps = DDSCAPS_BACKBUFFER;
1011             if( DD_OK != IDirectDrawSurface2_GetAttachedSurface(
1012                                                 p_surface, &dds_caps,
1013                                                 &p_pic[0].p_sys->p_surface ) )
1014             {
1015                 msg_Warn( p_vout, "NewPictureVec could not get back buffer" );
1016                 /* front buffer is the same as back buffer */
1017                 p_pic[0].p_sys->p_surface = p_surface;
1018             }
1019
1020
1021             p_vout->p_sys->p_current_surface = front_pic.p_sys->p_surface =
1022                 p_pic[0].p_sys->p_front_surface;
1023
1024             /* reset the front buffer memory */
1025             if( DirectXGetSurfaceDesc( &front_pic ) &&
1026                 UpdatePictureStruct( p_vout, &front_pic,
1027                                      p_vout->output.i_chroma ) )
1028             {
1029                 int i,j;
1030                 for( i = 0; i < front_pic.i_planes; i++ )
1031                     for( j = 0; j < front_pic.p[i].i_lines; j++)
1032                         memset( front_pic.p[i].p_pixels + j *
1033                                 front_pic.p[i].i_pitch, 127,
1034                                 front_pic.p[i].i_visible_pitch );
1035             }
1036
1037             DirectXUpdateOverlay( p_vout );
1038             I_OUTPUTPICTURES = 1;
1039             msg_Dbg( p_vout, "DirectX YUV overlay created successfully" );
1040         }
1041     }
1042
1043     /* As we can't have an overlay, we'll try to create a plain offscreen
1044      * surface. This surface will reside in video memory because there's a
1045      * better chance then that we'll be able to use some kind of hardware
1046      * acceleration like rescaling, blitting or YUV->RGB conversions.
1047      * We then only need to blit this surface onto the main display when we
1048      * want to display it */
1049     if( !p_vout->p_sys->b_using_overlay )
1050     {
1051
1052         if( p_vout->p_sys->b_hw_yuv )
1053             b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
1054                                                 p_vout->output.i_chroma,
1055                                                 p_vout->p_sys->b_using_overlay,
1056                                                 0 /* no back buffers */ );
1057
1058         if( !p_vout->p_sys->b_hw_yuv || !b_result_ok )
1059         {
1060             /* Our last choice is to use a plain RGB surface */
1061             DDPIXELFORMAT ddpfPixelFormat;
1062
1063             ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1064             IDirectDrawSurface2_GetPixelFormat( p_vout->p_sys->p_display,
1065                                                 &ddpfPixelFormat );
1066
1067             if( ddpfPixelFormat.dwFlags & DDPF_RGB )
1068             {
1069                 switch( ddpfPixelFormat.dwRGBBitCount )
1070                 {
1071                 case 8: /* FIXME: set the palette */
1072                     p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
1073                     break;
1074                 case 15:
1075                     p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
1076                     break;
1077                 case 16:
1078                     p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
1079                     break;
1080                 case 24:
1081                     p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
1082                     break;
1083                 case 32:
1084                     p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
1085                     break;
1086                 default:
1087                     msg_Err( p_vout, "unknown screen depth" );
1088                     return 0;
1089                 }
1090                 p_vout->output.i_rmask = ddpfPixelFormat.dwRBitMask;
1091                 p_vout->output.i_gmask = ddpfPixelFormat.dwGBitMask;
1092                 p_vout->output.i_bmask = ddpfPixelFormat.dwBBitMask;
1093             }
1094
1095             p_vout->p_sys->b_hw_yuv = 0;
1096
1097             b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
1098                                                 p_vout->output.i_chroma,
1099                                                 p_vout->p_sys->b_using_overlay,
1100                                                 0 /* no back buffers */ );
1101         }
1102
1103         if( b_result_ok )
1104         {
1105             /* Allocate internal structure */
1106             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1107             if( p_pic[0].p_sys == NULL )
1108             {
1109                 DirectXCloseSurface( p_vout, p_surface );
1110                 return -1;
1111             }
1112             p_pic[0].p_sys->p_surface = p_pic[0].p_sys->p_front_surface
1113                 = p_surface;
1114
1115             I_OUTPUTPICTURES = 1;
1116
1117             msg_Dbg( p_vout, "DirectX plain surface created successfully" );
1118         }
1119     }
1120
1121
1122     /* Now that we've got all our direct-buffers, we can finish filling in the
1123      * picture_t structures */
1124     for( i = 0; i < I_OUTPUTPICTURES; i++ )
1125     {
1126         p_pic[i].i_status = DESTROYED_PICTURE;
1127         p_pic[i].i_type   = DIRECT_PICTURE;
1128         PP_OUTPUTPICTURE[i] = &p_pic[i];
1129
1130         if( !DirectXGetSurfaceDesc( &p_pic[i] ) )
1131         {
1132             /* AAARRGG */
1133             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1134             I_OUTPUTPICTURES = 0;
1135             return -1;
1136         }
1137
1138         if( !UpdatePictureStruct(p_vout, &p_pic[i], p_vout->output.i_chroma) )
1139         {
1140
1141             /* Unknown chroma, tell the guy to get lost */
1142             msg_Err( p_vout, "never heard of chroma 0x%.8x (%4.4s)",
1143                      p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma );
1144             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1145             I_OUTPUTPICTURES = 0;
1146             return -1;
1147         }
1148     }
1149
1150     msg_Dbg( p_vout, "End NewPictureVec");
1151     return 0;
1152 }
1153
1154 /*****************************************************************************
1155  * FreePicture: destroy a picture vector allocated with NewPictureVec
1156  *****************************************************************************
1157  *
1158  *****************************************************************************/
1159 static void FreePictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1160                             int i_num_pics )
1161 {
1162     int i;
1163
1164     for( i = 0; i < i_num_pics; i++ )
1165     {
1166         DirectXCloseSurface( p_vout, p_pic[i].p_sys->p_front_surface );
1167
1168         for( i = 0; i < i_num_pics; i++ )
1169         {
1170             free( p_pic[i].p_sys );
1171         }
1172     }
1173 }
1174
1175 /*****************************************************************************
1176  * UpdatePictureStruct: updates the internal data in the picture_t structure
1177  *****************************************************************************
1178  * This will setup stuff for use by the video_output thread
1179  *****************************************************************************/
1180 static int UpdatePictureStruct( vout_thread_t *p_vout, picture_t *p_pic,
1181                                 int i_chroma )
1182 {
1183
1184     switch( p_vout->output.i_chroma )
1185     {
1186         case VLC_FOURCC('R','G','B','2'):
1187         case VLC_FOURCC('R','V','1','5'):
1188         case VLC_FOURCC('R','V','1','6'):
1189         case VLC_FOURCC('R','V','2','4'):
1190         case VLC_FOURCC('R','V','3','2'):
1191             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1192             p_pic->p->i_lines = p_vout->output.i_height;
1193             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1194             switch( p_vout->output.i_chroma )
1195             {
1196                 case VLC_FOURCC('R','G','B','2'):
1197                     p_pic->p->i_pixel_pitch = 1;
1198                     break;
1199                 case VLC_FOURCC('R','V','1','5'):
1200                 case VLC_FOURCC('R','V','1','6'):
1201                     p_pic->p->i_pixel_pitch = 2;
1202                     break;
1203                 case VLC_FOURCC('R','V','2','4'):
1204                 case VLC_FOURCC('R','V','3','2'):
1205                     p_pic->p->i_pixel_pitch = 4;
1206                     break;
1207                 default:
1208                     return -1;
1209             }
1210             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1211               p_pic->p->i_pixel_pitch;
1212             p_pic->i_planes = 1;
1213             break;
1214
1215         case VLC_FOURCC('Y','V','1','2'):
1216
1217             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1218             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1219             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1220             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1221             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1222               p_pic->p[Y_PLANE].i_pixel_pitch;
1223
1224             p_pic->V_PIXELS =  p_pic->Y_PIXELS
1225               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1226             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1227             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1228             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1229             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width *
1230               p_pic->p[V_PLANE].i_pixel_pitch;
1231
1232             p_pic->U_PIXELS = p_pic->V_PIXELS
1233               + p_pic->p[V_PLANE].i_lines * p_pic->p[V_PLANE].i_pitch;
1234             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1235             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1236             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1237             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width *
1238               p_pic->p[U_PLANE].i_pixel_pitch;
1239
1240             p_pic->i_planes = 3;
1241             break;
1242
1243         case VLC_FOURCC('I','Y','U','V'):
1244
1245             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1246             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1247             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1248             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1249             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1250               p_pic->p[Y_PLANE].i_pixel_pitch;
1251
1252             p_pic->U_PIXELS = p_pic->Y_PIXELS
1253               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1254             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1255             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1256             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1257             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width *
1258               p_pic->p[U_PLANE].i_pixel_pitch;
1259
1260             p_pic->V_PIXELS =  p_pic->U_PIXELS
1261               + p_pic->p[U_PLANE].i_lines * p_pic->p[U_PLANE].i_pitch;
1262             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1263             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1264             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1265             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width *
1266               p_pic->p[V_PLANE].i_pixel_pitch;
1267
1268             p_pic->i_planes = 3;
1269             break;
1270
1271         case VLC_FOURCC('Y','U','Y','2'):
1272
1273             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1274             p_pic->p->i_lines = p_vout->output.i_height;
1275             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1276             p_pic->p->i_pixel_pitch = 2;
1277             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1278               p_pic->p->i_pixel_pitch;
1279
1280             p_pic->i_planes = 1;
1281             break;
1282
1283         default:
1284             /* Not supported */
1285             return 0;
1286
1287     }
1288
1289     return 1;
1290 }
1291
1292 /*****************************************************************************
1293  * DirectXGetDDrawCaps: Probe the capabilities of the hardware
1294  *****************************************************************************
1295  * It is nice to know which features are supported by the hardware so we can
1296  * find ways to optimize our rendering.
1297  *****************************************************************************/
1298 static void DirectXGetDDrawCaps( vout_thread_t *p_vout )
1299 {
1300     DDCAPS ddcaps;
1301     HRESULT dxresult;
1302
1303     /* This is just an indication of whether or not we'll support overlay,
1304      * but with this test we don't know if we support YUV overlay */
1305     memset( &ddcaps, 0, sizeof( DDCAPS ));
1306     ddcaps.dwSize = sizeof(DDCAPS);
1307     dxresult = IDirectDraw2_GetCaps( p_vout->p_sys->p_ddobject,
1308                                      &ddcaps, NULL );
1309     if(dxresult != DD_OK )
1310     {
1311         msg_Warn( p_vout, "cannot get caps" );
1312     }
1313     else
1314     {
1315         BOOL bHasOverlay, bHasOverlayFourCC, bCanClipOverlay,
1316              bHasColorKey, bCanStretch;
1317
1318         /* Determine if the hardware supports overlay surfaces */
1319         bHasOverlay = ((ddcaps.dwCaps & DDCAPS_OVERLAY) ==
1320                        DDCAPS_OVERLAY) ? TRUE : FALSE;
1321         /* Determine if the hardware supports overlay surfaces */
1322         bHasOverlayFourCC = ((ddcaps.dwCaps & DDCAPS_OVERLAYFOURCC) ==
1323                        DDCAPS_OVERLAYFOURCC) ? TRUE : FALSE;
1324         /* Determine if the hardware supports overlay surfaces */
1325         bCanClipOverlay = ((ddcaps.dwCaps & DDCAPS_OVERLAYCANTCLIP) ==
1326                        0 ) ? TRUE : FALSE;
1327         /* Determine if the hardware supports colorkeying */
1328         bHasColorKey = ((ddcaps.dwCaps & DDCAPS_COLORKEY) ==
1329                         DDCAPS_COLORKEY) ? TRUE : FALSE;
1330         /* Determine if the hardware supports scaling of the overlay surface */
1331         bCanStretch = ((ddcaps.dwCaps & DDCAPS_OVERLAYSTRETCH) ==
1332                        DDCAPS_OVERLAYSTRETCH) ? TRUE : FALSE;
1333         msg_Dbg( p_vout, "DirectDraw Capabilities: overlay=%i yuvoverlay=%i "
1334                          "can_clip_overlay=%i colorkey=%i stretch=%i",
1335                          bHasOverlay, bHasOverlayFourCC, bCanClipOverlay,
1336                          bHasColorKey, bCanStretch );
1337
1338         /* Overlay clipping support is interesting for us as it means we can
1339          * get rid of the colorkey alltogether */
1340         p_vout->p_sys->b_caps_overlay_clipping = bCanClipOverlay;
1341
1342     }
1343 }
1344
1345 /*****************************************************************************
1346  * DirectXGetSurfaceDesc: Get some more information about the surface
1347  *****************************************************************************
1348  * This function get and stores the surface descriptor which among things
1349  * has the pointer to the picture data.
1350  *****************************************************************************/
1351 static int DirectXGetSurfaceDesc( picture_t *p_pic )
1352 {
1353     HRESULT dxresult;
1354
1355     /* Lock the surface to get a valid pointer to the picture buffer */
1356     memset( &p_pic->p_sys->ddsd, 0, sizeof( DDSURFACEDESC ));
1357     p_pic->p_sys->ddsd.dwSize = sizeof(DDSURFACEDESC);
1358     dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface,
1359                                          NULL, &p_pic->p_sys->ddsd,
1360                                          DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1361                                          NULL );
1362     if ( dxresult == DDERR_SURFACELOST )
1363     {
1364         /* Your surface can be lost so be sure
1365          * to check this and restore it if needed */
1366         dxresult = IDirectDrawSurface2_Restore( p_pic->p_sys->p_surface );
1367         dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1368                                              &p_pic->p_sys->ddsd,
1369                                              DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1370                                              NULL);
1371     }
1372     if( dxresult != DD_OK )
1373     {
1374 //X        msg_Err( p_vout, "DirectXGetSurfaceDesc cannot lock surface" );
1375         return 0;
1376     }
1377
1378     /* Unlock the Surface */
1379     dxresult = IDirectDrawSurface2_Unlock( p_pic->p_sys->p_surface, NULL );
1380
1381     return 1;
1382 }