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 1.41 2002/07/29 19:07:00 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_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  vout_Create    ( vout_thread_t * );
  64 static void vout_Destroy   ( vout_thread_t * );
  65 static int  vout_Init      ( vout_thread_t * );
  66 static void vout_End       ( vout_thread_t * );
  67 static int  vout_Manage    ( vout_thread_t * );
  68 static void vout_Render    ( vout_thread_t *, picture_t * );
  69 static void vout_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  * Functions exported as capabilities. They are declared as static so that
  89  * we don't pollute the namespace too much.
  90  *****************************************************************************/
  91 void _M( vout_getfunctions )( function_list_t * p_function_list )
  92 {
  93     p_function_list->functions.vout.pf_create     = vout_Create;
  94     p_function_list->functions.vout.pf_init       = vout_Init;
  95     p_function_list->functions.vout.pf_end        = vout_End;
  96     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
  97     p_function_list->functions.vout.pf_manage     = vout_Manage;
  98     p_function_list->functions.vout.pf_render     = vout_Render;
  99     p_function_list->functions.vout.pf_display    = vout_Display;
 100 }
 101
 102 /*****************************************************************************
 103  * vout_Create: allocate DirectX video thread output method
 104  *****************************************************************************
 105  * This function allocates and initialize the DirectX vout method.
 106  *****************************************************************************/
 107 static int vout_Create( vout_thread_t *p_vout )
 108 {
 109     /* Allocate structure */
 110     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 111     if( p_vout->p_sys == NULL )
 112     {
 113         msg_Err( p_vout, "out of memory" );
 114         return 1;
 115     }
 116
 117     /* Initialisations */
 118     p_vout->p_sys->p_ddobject = NULL;
 119     p_vout->p_sys->p_display = NULL;
 120     p_vout->p_sys->p_current_surface = NULL;
 121     p_vout->p_sys->p_clipper = NULL;
 122     p_vout->p_sys->hbrush = NULL;
 123     p_vout->p_sys->hwnd = NULL;
 124     p_vout->p_sys->i_changes = 0;
 125     p_vout->p_sys->b_caps_overlay_clipping = 0;
 126     SetRectEmpty( &p_vout->p_sys->rect_display );
 127     p_vout->p_sys->b_using_overlay = config_GetInt( p_vout, "overlay" );
 128     p_vout->p_sys->b_use_sysmem = config_GetInt( p_vout, "directx-use-sysmem");
 129     p_vout->p_sys->b_hw_yuv = config_GetInt( p_vout, "directx-hw-yuv" );
 130
 131     p_vout->p_sys->b_cursor_hidden = 0;
 132     p_vout->p_sys->i_lastmoved = mdate();
 133
 134     /* Set main window's size */
 135     p_vout->p_sys->i_window_width = p_vout->i_window_width;
 136     p_vout->p_sys->i_window_height = p_vout->i_window_height;
 137
 138     /* Create the DirectXEventThread, this thread is created by us to isolate
 139      * the Win32 PeekMessage function calls. We want to do this because
 140      * Windows can stay blocked inside this call for a long time, and when
 141      * this happens it thus blocks vlc's video_output thread.
 142      * DirectXEventThread will take care of the creation of the video
 143      * window (because PeekMessage has to be called from the same thread which
 144      * created the window). */
 145     msg_Dbg( p_vout, "creating DirectXEventThread" );
 146     p_vout->p_sys->p_event =
 147         vlc_object_create( p_vout, sizeof(event_thread_t) );
 148     p_vout->p_sys->p_event->p_vout = p_vout;
 149     if( vlc_thread_create( p_vout->p_sys->p_event,
 150                            "DirectX Events Thread", DirectXEventThread, 1 ) )
 151     {
 152         msg_Err( p_vout, "cannot create DirectXEventThread" );
 153         vlc_object_destroy( p_vout->p_sys->p_event );
 154         p_vout->p_sys->p_event = NULL;
 155         goto error;
 156     }
 157
 158     if( p_vout->p_sys->p_event->b_error )
 159     {
 160         msg_Err( p_vout, "DirectXEventThread failed" );
 161         goto error;
 162     }
 163
 164     vlc_object_attach( p_vout->p_sys->p_event, p_vout );
 165
 166     msg_Dbg( p_vout, "DirectXEventThread running" );
 167
 168     /* Initialise DirectDraw */
 169     if( DirectXInitDDraw( p_vout ) )
 170     {
 171         msg_Err( p_vout, "cannot initialize DirectDraw" );
 172         goto error;
 173     }
 174
 175     /* Create the directx display */
 176     if( DirectXCreateDisplay( p_vout ) )
 177     {
 178         msg_Err( p_vout, "cannot initialize DirectDraw" );
 179         goto error;
 180     }
 181
 182     return 0;
 183
 184  error:
 185     vout_Destroy( p_vout );
 186     return 1;
 187
 188 }
 189
 190 /*****************************************************************************
 191  * vout_Init: initialize DirectX video thread output method
 192  *****************************************************************************
 193  * This function create the directx surfaces needed by the output thread.
 194  * It is called at the beginning of the thread.
 195  *****************************************************************************/
 196 static int vout_Init( vout_thread_t *p_vout )
 197 {
 198     int i_chroma_backup;
 199
 200     /* Initialize the output structure.
 201      * Since DirectDraw can do rescaling for us, stick to the default
 202      * coordinates and aspect. */
 203     p_vout->output.i_width  = p_vout->render.i_width;
 204     p_vout->output.i_height = p_vout->render.i_height;
 205     p_vout->output.i_aspect = p_vout->render.i_aspect;
 206
 207 #define MAX_DIRECTBUFFERS 1
 208     /* Right now we use only 1 directbuffer because we don't want the
 209      * video decoder to decode directly into direct buffers as they are
 210      * created into video memory and video memory is _really_ slow */
 211
 212     /* Choose the chroma we will try first. */
 213     switch( p_vout->render.i_chroma )
 214     {
 215         case VLC_FOURCC('Y','U','Y','2'):
 216         case VLC_FOURCC('Y','U','N','V'):
 217             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 218             break;
 219         case VLC_FOURCC('U','Y','V','Y'):
 220         case VLC_FOURCC('U','Y','N','V'):
 221         case VLC_FOURCC('Y','4','2','2'):
 222             p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
 223             break;
 224         case VLC_FOURCC('Y','V','Y','U'):
 225             p_vout->output.i_chroma = VLC_FOURCC('Y','V','Y','U');
 226             break;
 227         default:
 228             p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 229             break;
 230     }
 231
 232     NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 233
 234     i_chroma_backup = p_vout->output.i_chroma;
 235
 236     if( !I_OUTPUTPICTURES )
 237     {
 238         /* hmmm, it didn't work! Let's try commonly supported chromas */
 239         p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 240         NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 241         if( !I_OUTPUTPICTURES )
 242         {
 243             /* hmmm, it didn't work! Let's try commonly supported chromas */
 244             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 245             NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 246         }
 247     }
 248
 249     if( !I_OUTPUTPICTURES )
 250     {
 251         /* If it still didn't work then don't try to use an overlay */
 252         p_vout->output.i_chroma = i_chroma_backup;
 253         p_vout->p_sys->b_using_overlay = 0;
 254         NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 255     }
 256
 257     /* Change the window title bar text */
 258     if( p_vout->p_sys->b_using_overlay )
 259         SetWindowText( p_vout->p_sys->hwnd,
 260                        VOUT_TITLE " (hardware YUV overlay DirectX output)" );
 261     else if( p_vout->p_sys->b_hw_yuv )
 262         SetWindowText( p_vout->p_sys->hwnd,
 263                        VOUT_TITLE " (hardware YUV DirectX output)" );
 264     else SetWindowText( p_vout->p_sys->hwnd,
 265                         VOUT_TITLE " (software RGB DirectX output)" );
 266
 267     return 0;
 268 }
 269
 270 /*****************************************************************************
 271  * vout_End: terminate Sys video thread output method
 272  *****************************************************************************
 273  * Terminate an output method created by vout_Create.
 274  * It is called at the end of the thread.
 275  *****************************************************************************/
 276 static void vout_End( vout_thread_t *p_vout )
 277 {
 278     FreePictureVec( p_vout, p_vout->p_picture, I_OUTPUTPICTURES );
 279     return;
 280 }
 281
 282 /*****************************************************************************
 283  * vout_Destroy: destroy Sys video thread output method
 284  *****************************************************************************
 285  * Terminate an output method created by vout_Create
 286  *****************************************************************************/
 287 static void vout_Destroy( vout_thread_t *p_vout )
 288 {
 289     msg_Dbg( p_vout, "vout_Destroy" );
 290
 291     DirectXCloseDisplay( p_vout );
 292     DirectXCloseDDraw( p_vout );
 293
 294     if( p_vout->p_sys->p_event )
 295     {
 296         vlc_object_detach_all( p_vout->p_sys->p_event );
 297
 298         /* Kill DirectXEventThread */
 299         p_vout->p_sys->p_event->b_die = 1;
 300
 301         /* we need to be sure DirectXEventThread won't stay stuck in
 302          * GetMessage, so we send a fake message */
 303         if( p_vout->p_sys->hwnd )
 304             PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0);
 305
 306         vlc_thread_join( p_vout->p_sys->p_event );
 307         vlc_object_destroy( p_vout->p_sys->p_event );
 308     }
 309
 310     if( p_vout->p_sys )
 311     {
 312         free( p_vout->p_sys );
 313         p_vout->p_sys = NULL;
 314     }
 315 }
 316
 317 /*****************************************************************************
 318  * vout_Manage: handle Sys events
 319  *****************************************************************************
 320  * This function should be called regularly by the video output thread.
 321  * It returns a non null value if an error occured.
 322  *****************************************************************************/
 323 static int vout_Manage( vout_thread_t *p_vout )
 324 {
 325     WINDOWPLACEMENT window_placement;
 326
 327     /* We used to call the Win32 PeekMessage function here to read the window
 328      * messages. But since window can stay blocked into this function for a
 329      * long time (for example when you move your window on the screen), I
 330      * decided to isolate PeekMessage in another thread. */
 331
 332     /*
 333      * Scale Change
 334      */
 335     if( p_vout->i_changes & VOUT_SCALE_CHANGE
 336         || p_vout->p_sys->i_changes & VOUT_SCALE_CHANGE)
 337     {
 338         msg_Dbg( p_vout, "Scale Change" );
 339         if( !p_vout->p_sys->b_using_overlay )
 340             InvalidateRect( p_vout->p_sys->hwnd, NULL, TRUE );
 341         else
 342             DirectXUpdateOverlay( p_vout );
 343         p_vout->i_changes &= ~VOUT_SCALE_CHANGE;
 344         p_vout->p_sys->i_changes &= ~VOUT_SCALE_CHANGE;
 345     }
 346
 347     /*
 348      * Size Change
 349      */
 350     if( p_vout->i_changes & VOUT_SIZE_CHANGE
 351         || p_vout->p_sys->i_changes & VOUT_SIZE_CHANGE )
 352     {
 353         msg_Dbg( p_vout, "Size Change" );
 354         if( !p_vout->p_sys->b_using_overlay )
 355             InvalidateRect( p_vout->p_sys->hwnd, NULL, TRUE );
 356         else
 357             DirectXUpdateOverlay( p_vout );
 358         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 359         p_vout->p_sys->i_changes &= ~VOUT_SIZE_CHANGE;
 360     }
 361
 362     /*
 363      * Fullscreen change
 364      */
 365     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
 366         || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
 367     {
 368         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 369
 370         /* We need to switch between Maximized and Normal sized window */
 371         window_placement.length = sizeof(WINDOWPLACEMENT);
 372         GetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 373         if( p_vout->b_fullscreen )
 374         {
 375             /* Maximized window */
 376             window_placement.showCmd = SW_SHOWMAXIMIZED;
 377             /* Change window style, no borders and no title bar */
 378             SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE, 0 );
 379
 380         }
 381         else
 382         {
 383             /* Normal window */
 384             window_placement.showCmd = SW_SHOWNORMAL;
 385             /* Change window style, borders and title bar */
 386             SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE,
 387                            WS_OVERLAPPEDWINDOW | WS_SIZEBOX | WS_VISIBLE );
 388         }
 389
 390         SetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 391
 392         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 393         p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 394     }
 395
 396     /*
 397      * Pointer change
 398      */
 399     if( (!p_vout->p_sys->b_cursor_hidden) &&
 400         ( (mdate() - p_vout->p_sys->i_lastmoved) > 5000000 ) )
 401     {
 402         /* Hide the mouse automatically */
 403         p_vout->p_sys->b_cursor_hidden = 1;
 404         PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
 405     }
 406
 407     /* Check if the event thread is still running */
 408     if( p_vout->p_sys->p_event->b_die )
 409         return 1; /* exit */
 410
 411     return 0;
 412 }
 413
 414 /*****************************************************************************
 415  * vout_Render: render previously calculated output
 416  *****************************************************************************/
 417 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
 418 {
 419     ;
 420 }
 421
 422 /*****************************************************************************
 423  * vout_Display: displays previously rendered output
 424  *****************************************************************************
 425  * This function sends the currently rendered image to the display, wait until
 426  * it is displayed and switch the two rendering buffers, preparing next frame.
 427  *****************************************************************************/
 428 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
 429 {
 430     HRESULT dxresult;
 431
 432     if( (p_vout->p_sys->p_display == NULL) )
 433     {
 434         msg_Warn( p_vout, "no display!!" );
 435         return;
 436     }
 437
 438     if( !p_vout->p_sys->b_using_overlay )
 439     {
 440         DDBLTFX  ddbltfx;
 441
 442         /* We ask for the "NOTEARING" option */
 443         memset( &ddbltfx, 0, sizeof(DDBLTFX) );
 444         ddbltfx.dwSize = sizeof(DDBLTFX);
 445         ddbltfx.dwDDFX = DDBLTFX_NOTEARING;
 446
 447         /* Blit video surface to display */
 448         dxresult = IDirectDrawSurface2_Blt(p_vout->p_sys->p_display,
 449                                            &p_vout->p_sys->rect_dest_clipped,
 450                                            p_pic->p_sys->p_surface,
 451                                            &p_vout->p_sys->rect_src_clipped,
 452                                            DDBLT_ASYNC, &ddbltfx );
 453         if ( dxresult == DDERR_SURFACELOST )
 454         {
 455             /* Our surface can be lost so be sure
 456              * to check this and restore it if needed */
 457             IDirectDrawSurface2_Restore( p_vout->p_sys->p_display );
 458
 459             /* Now that the surface has been restored try to display again */
 460             dxresult = IDirectDrawSurface2_Blt(p_vout->p_sys->p_display,
 461                                            &p_vout->p_sys->rect_dest_clipped,
 462                                            p_pic->p_sys->p_surface,
 463                                            &p_vout->p_sys->rect_src_clipped,
 464                                            DDBLT_ASYNC, &ddbltfx );
 465         }
 466
 467         if( dxresult != DD_OK )
 468         {
 469             msg_Warn( p_vout, "could not Blit the surface" );
 470             return;
 471         }
 472
 473     }
 474     else /* using overlay */
 475     {
 476
 477         /* Flip the overlay buffers if we are using back buffers */
 478         if( p_pic->p_sys->p_front_surface == p_pic->p_sys->p_surface )
 479             return;
 480
 481         dxresult = IDirectDrawSurface2_Flip( p_pic->p_sys->p_front_surface,
 482                                              NULL, DDFLIP_WAIT );
 483         if ( dxresult == DDERR_SURFACELOST )
 484         {
 485             /* Our surface can be lost so be sure
 486              * to check this and restore it if needed */
 487             IDirectDrawSurface2_Restore( p_vout->p_sys->p_display );
 488             IDirectDrawSurface2_Restore( p_pic->p_sys->p_front_surface );
 489
 490             /* Now that the surface has been restored try to display again */
 491             dxresult = IDirectDrawSurface2_Flip( p_pic->p_sys->p_front_surface,
 492                                                  NULL, DDFLIP_WAIT );
 493             DirectXUpdateOverlay( p_vout );
 494         }
 495
 496         if( dxresult != DD_OK )
 497             msg_Warn( p_vout, "could not flip overlay surface" );
 498
 499         if( !DirectXGetSurfaceDesc( p_pic ) )
 500         {
 501             /* AAARRGG */
 502             msg_Err( p_vout, "cannot get surface desc" );
 503             return;
 504         }
 505
 506         if( !UpdatePictureStruct( p_vout, p_pic, p_vout->output.i_chroma ) )
 507         {
 508             /* AAARRGG */
 509             msg_Err( p_vout, "invalid pic chroma" );
 510             return;
 511         }
 512
 513         /* set currently displayed pic */
 514         p_vout->p_sys->p_current_surface = p_pic->p_sys->p_front_surface;
 515     }
 516
 517 }
 518
 519
 520 /* following functions are local */
 521
 522 /*****************************************************************************
 523  * DirectXInitDDraw: Takes care of all the DirectDraw initialisations
 524  *****************************************************************************
 525  * This function initialise and allocate resources for DirectDraw.
 526  *****************************************************************************/
 527 static int DirectXInitDDraw( vout_thread_t *p_vout )
 528 {
 529     HRESULT    dxresult;
 530     HRESULT    (WINAPI *OurDirectDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *);
 531     LPDIRECTDRAW  p_ddobject;
 532
 533     msg_Dbg( p_vout, "DirectXInitDDraw" );
 534
 535     /* load direct draw DLL */
 536     p_vout->p_sys->hddraw_dll = LoadLibrary("DDRAW.DLL");
 537     if( p_vout->p_sys->hddraw_dll == NULL )
 538     {
 539         msg_Warn( p_vout, "DirectXInitDDraw failed loading ddraw.dll" );
 540         goto error;
 541     }
 542
 543     OurDirectDrawCreate =
 544       (void *)GetProcAddress(p_vout->p_sys->hddraw_dll, "DirectDrawCreate");
 545     if ( OurDirectDrawCreate == NULL )
 546     {
 547         msg_Err( p_vout, "DirectXInitDDraw failed GetProcAddress" );
 548         goto error;
 549     }
 550
 551     /* Initialize DirectDraw now */
 552     dxresult = OurDirectDrawCreate( NULL, &p_ddobject, NULL );
 553     if( dxresult != DD_OK )
 554     {
 555         msg_Err( p_vout, "DirectXInitDDraw cannot initialize DDraw" );
 556         goto error;
 557     }
 558
 559     /* Get the IDirectDraw2 interface */
 560     dxresult = IDirectDraw_QueryInterface( p_ddobject, &IID_IDirectDraw2,
 561                                         (LPVOID *)&p_vout->p_sys->p_ddobject );
 562     /* Release the unused interface */
 563     IDirectDraw_Release( p_ddobject );
 564     if( dxresult != DD_OK )
 565     {
 566         msg_Err( p_vout, "cannot get IDirectDraw2 interface" );
 567         goto error;
 568     }
 569
 570     /* Set DirectDraw Cooperative level, ie what control we want over Windows
 571      * display */
 572     dxresult = IDirectDraw2_SetCooperativeLevel( p_vout->p_sys->p_ddobject,
 573                                            p_vout->p_sys->hwnd, DDSCL_NORMAL );
 574     if( dxresult != DD_OK )
 575     {
 576         msg_Err( p_vout, "cannot set direct draw cooperative level" );
 577         goto error;
 578     }
 579
 580     /* Probe the capabilities of the hardware */
 581     DirectXGetDDrawCaps( p_vout );
 582
 583     msg_Dbg( p_vout, "End DirectXInitDDraw" );
 584     return 0;
 585
 586  error:
 587     if( p_vout->p_sys->p_ddobject )
 588         IDirectDraw2_Release( p_vout->p_sys->p_ddobject );
 589     if( p_vout->p_sys->hddraw_dll )
 590         FreeLibrary( p_vout->p_sys->hddraw_dll );
 591     p_vout->p_sys->hddraw_dll = NULL;
 592     p_vout->p_sys->p_ddobject = NULL;
 593     return 1;
 594 }
 595
 596 /*****************************************************************************
 597  * DirectXCreateDisplay: create the DirectDraw display.
 598  *****************************************************************************
 599  * Create and initialize display according to preferences specified in the vout
 600  * thread fields.
 601  *****************************************************************************/
 602 static int DirectXCreateDisplay( vout_thread_t *p_vout )
 603 {
 604     HRESULT              dxresult;
 605     DDSURFACEDESC        ddsd;
 606     LPDIRECTDRAWSURFACE  p_display;
 607     DDPIXELFORMAT   pixel_format;
 608
 609     msg_Dbg( p_vout, "DirectXCreateDisplay" );
 610
 611     /* Now get the primary surface. This surface is what you actually see
 612      * on your screen */
 613     memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 614     ddsd.dwSize = sizeof(DDSURFACEDESC);
 615     ddsd.dwFlags = DDSD_CAPS;
 616     ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
 617
 618     dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 619                                            &ddsd,
 620                                            &p_display, NULL );
 621     if( dxresult != DD_OK )
 622     {
 623         msg_Err( p_vout, "cannot get direct draw primary surface" );
 624         return 1;
 625     }
 626
 627     dxresult = IDirectDrawSurface_QueryInterface( p_display,
 628                                          &IID_IDirectDrawSurface2,
 629                                          (LPVOID *)&p_vout->p_sys->p_display );
 630     /* Release the old interface */
 631     IDirectDrawSurface_Release( p_display );
 632     if ( dxresult != DD_OK )
 633     {
 634         msg_Err( p_vout, "cannot get IDirectDrawSurface2 interface" );
 635         return 1;
 636     }
 637
 638     /* The clipper will be used only in non-overlay mode */
 639     DirectXCreateClipper( p_vout );
 640
 641
 642 #if 1
 643     /* compute the colorkey pixel value from the RGB value we've got */
 644     memset( &pixel_format, 0, sizeof( DDPIXELFORMAT ));
 645     pixel_format.dwSize = sizeof( DDPIXELFORMAT );
 646     dxresult = IDirectDrawSurface2_GetPixelFormat( p_vout->p_sys->p_display,
 647                                                    &pixel_format );
 648     if( dxresult != DD_OK )
 649         msg_Warn( p_vout, "DirectXUpdateOverlay GetPixelFormat failed" );
 650     p_vout->p_sys->i_colorkey = (DWORD)((( p_vout->p_sys->i_rgb_colorkey
 651                                            * pixel_format.dwRBitMask) / 255)
 652                                         & pixel_format.dwRBitMask);
 653 #endif
 654
 655     return 0;
 656 }
 657
 658
 659 /*****************************************************************************
 660  * DirectXCreateClipper: Create a clipper that will be used when blitting the
 661  *                       RGB surface to the main display.
 662  *****************************************************************************
 663  * This clipper prevents us to modify by mistake anything on the screen
 664  * which doesn't belong to our window. For example when a part of our video
 665  * window is hidden by another window.
 666  *****************************************************************************/
 667 static int DirectXCreateClipper( vout_thread_t *p_vout )
 668 {
 669     HRESULT dxresult;
 670
 671     msg_Dbg( p_vout, "DirectXCreateClipper" );
 672
 673     /* Create the clipper */
 674     dxresult = IDirectDraw2_CreateClipper( p_vout->p_sys->p_ddobject, 0,
 675                                            &p_vout->p_sys->p_clipper, NULL );
 676     if( dxresult != DD_OK )
 677     {
 678         msg_Warn( p_vout, "DirectXCreateClipper cannot create clipper" );
 679         goto error;
 680     }
 681
 682     /* associate the clipper to the window */
 683     dxresult = IDirectDrawClipper_SetHWnd(p_vout->p_sys->p_clipper, 0,
 684                                           p_vout->p_sys->hwnd);
 685     if( dxresult != DD_OK )
 686     {
 687         msg_Warn( p_vout,
 688                   "DirectXCreateClipper cannot attach clipper to window" );
 689         goto error;
 690     }
 691
 692     /* associate the clipper with the surface */
 693     dxresult = IDirectDrawSurface_SetClipper(p_vout->p_sys->p_display,
 694                                              p_vout->p_sys->p_clipper);
 695     if( dxresult != DD_OK )
 696     {
 697         msg_Warn( p_vout,
 698                   "DirectXCreateClipper cannot attach clipper to surface" );
 699         goto error;
 700     }
 701
 702     return 0;
 703
 704  error:
 705     if( p_vout->p_sys->p_clipper )
 706         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
 707     p_vout->p_sys->p_clipper = NULL;
 708     return 1;
 709
 710 }
 711
 712 /*****************************************************************************
 713  * DirectXCreateSurface: create an YUV overlay or RGB surface for the video.
 714  *****************************************************************************
 715  * The best method of display is with an YUV overlay because the YUV->RGB
 716  * conversion is done in hardware.
 717  * You can also create a plain RGB surface.
 718  * ( Maybe we could also try an RGB overlay surface, which could have hardware
 719  * scaling and which would also be faster in window mode because you don't
 720  * need to do any blitting to the main display...)
 721  *****************************************************************************/
 722 static int DirectXCreateSurface( vout_thread_t *p_vout,
 723                                  LPDIRECTDRAWSURFACE2 *pp_surface_final,
 724                                  int i_chroma, int b_overlay,
 725                                  int i_backbuffers )
 726 {
 727     HRESULT dxresult;
 728     LPDIRECTDRAWSURFACE p_surface;
 729     DDSURFACEDESC ddsd;
 730
 731     /* Create the video surface */
 732     if( b_overlay )
 733     {
 734         /* Now try to create the YUV overlay surface.
 735          * This overlay will be displayed on top of the primary surface.
 736          * A color key is used to determine whether or not the overlay will be
 737          * displayed, ie the overlay will be displayed in place of the primary
 738          * surface wherever the primary surface will have this color.
 739          * The video window has been created with a background of this color so
 740          * the overlay will be only displayed on top of this window */
 741
 742         memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 743         ddsd.dwSize = sizeof(DDSURFACEDESC);
 744         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
 745         ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
 746         ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
 747         ddsd.dwFlags = DDSD_CAPS |
 748                        DDSD_HEIGHT |
 749                        DDSD_WIDTH |
 750                        DDSD_PIXELFORMAT;
 751         ddsd.dwFlags |= (i_backbuffers ? DDSD_BACKBUFFERCOUNT : 0);
 752         ddsd.ddsCaps.dwCaps = DDSCAPS_OVERLAY |
 753                               DDSCAPS_VIDEOMEMORY;
 754         ddsd.ddsCaps.dwCaps |= (i_backbuffers ? DDSCAPS_COMPLEX | DDSCAPS_FLIP
 755                                 : 0 );
 756         ddsd.dwHeight = p_vout->render.i_height;
 757         ddsd.dwWidth = p_vout->render.i_width;
 758         ddsd.dwBackBufferCount = i_backbuffers;
 759
 760         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 761                                                &ddsd,
 762                                                &p_surface, NULL );
 763         if( dxresult != DD_OK )
 764         {
 765             *pp_surface_final = NULL;
 766             return 0;
 767         }
 768     }
 769
 770     if( !b_overlay )
 771     {
 772         vlc_bool_t b_rgb_surface =
 773             ( i_chroma == VLC_FOURCC('R','G','B','2') )
 774           || ( i_chroma == VLC_FOURCC('R','V','1','5') )
 775            || ( i_chroma == VLC_FOURCC('R','V','1','6') )
 776             || ( i_chroma == VLC_FOURCC('R','V','2','4') )
 777              || ( i_chroma == VLC_FOURCC('R','V','3','2') );
 778
 779         memset( &ddsd, 0, sizeof( DDSURFACEDESC ) );
 780         ddsd.dwSize = sizeof(DDSURFACEDESC);
 781         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
 782         ddsd.dwFlags = DDSD_HEIGHT |
 783                        DDSD_WIDTH |
 784                        DDSD_CAPS;
 785         ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
 786         ddsd.dwHeight = p_vout->render.i_height;
 787         ddsd.dwWidth = p_vout->render.i_width;
 788
 789         if( p_vout->p_sys->b_use_sysmem )
 790             ddsd.ddsCaps.dwCaps |= DDSCAPS_SYSTEMMEMORY;
 791         else
 792             ddsd.ddsCaps.dwCaps |= DDSCAPS_VIDEOMEMORY;
 793
 794         if( !b_rgb_surface )
 795         {
 796             ddsd.dwFlags |= DDSD_PIXELFORMAT;
 797             ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
 798             ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
 799         }
 800
 801         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 802                                                &ddsd,
 803                                                &p_surface, NULL );
 804         if( dxresult != DD_OK )
 805         {
 806             *pp_surface_final = NULL;
 807             return 0;
 808         }
 809     }
 810
 811     /* Now that the surface is created, try to get a newer DirectX interface */
 812     dxresult = IDirectDrawSurface_QueryInterface( p_surface,
 813                                      &IID_IDirectDrawSurface2,
 814                                      (LPVOID *)pp_surface_final );
 815     IDirectDrawSurface_Release( p_surface );    /* Release the old interface */
 816     if ( dxresult != DD_OK )
 817     {
 818         msg_Err( p_vout, "cannot get IDirectDrawSurface2 interface" );
 819         *pp_surface_final = NULL;
 820         return 0;
 821     }
 822
 823     return 1;
 824 }
 825
 826 /*****************************************************************************
 827  * DirectXUpdateOverlay: Move or resize overlay surface on video display.
 828  *****************************************************************************
 829  * This function is used to move or resize an overlay surface on the screen.
 830  * Ususally the overlay is moved by the user and thus, by a move or resize
 831  * event (in vout_Manage).
 832  *****************************************************************************/
 833 void DirectXUpdateOverlay( vout_thread_t *p_vout )
 834 {
 835     DDOVERLAYFX     ddofx;
 836     DWORD           dwFlags;
 837     HRESULT         dxresult;
 838
 839     if( p_vout->p_sys->p_current_surface == NULL ||
 840         !p_vout->p_sys->b_using_overlay )
 841         return;
 842
 843     /* The new window dimensions should already have been computed by the
 844      * caller of this function */
 845
 846     /* Position and show the overlay */
 847     memset(&ddofx, 0, sizeof(DDOVERLAYFX));
 848     ddofx.dwSize = sizeof(DDOVERLAYFX);
 849     ddofx.dckDestColorkey.dwColorSpaceLowValue = p_vout->p_sys->i_colorkey;
 850     ddofx.dckDestColorkey.dwColorSpaceHighValue = p_vout->p_sys->i_colorkey;
 851
 852     dwFlags = DDOVER_SHOW;
 853     if( !p_vout->p_sys->b_caps_overlay_clipping )
 854         dwFlags |= DDOVER_KEYDESTOVERRIDE;
 855
 856     dxresult = IDirectDrawSurface2_UpdateOverlay(
 857                                          p_vout->p_sys->p_current_surface,
 858                                          &p_vout->p_sys->rect_src_clipped,
 859                                          p_vout->p_sys->p_display,
 860                                          &p_vout->p_sys->rect_dest_clipped,
 861                                          dwFlags,
 862                                          &ddofx );
 863     if(dxresult != DD_OK)
 864     {
 865         msg_Warn( p_vout,
 866                   "DirectXUpdateOverlay cannot move or resize overlay" );
 867     }
 868
 869 }
 870
 871 /*****************************************************************************
 872  * DirectXCloseDDraw: Release the DDraw object allocated by DirectXInitDDraw
 873  *****************************************************************************
 874  * This function returns all resources allocated by DirectXInitDDraw.
 875  *****************************************************************************/
 876 static void DirectXCloseDDraw( vout_thread_t *p_vout )
 877 {
 878     msg_Dbg( p_vout, "DirectXCloseDDraw" );
 879     if( p_vout->p_sys->p_ddobject != NULL )
 880     {
 881         IDirectDraw2_Release(p_vout->p_sys->p_ddobject);
 882         p_vout->p_sys->p_ddobject = NULL;
 883     }
 884
 885     if( p_vout->p_sys->hddraw_dll != NULL )
 886     {
 887         FreeLibrary( p_vout->p_sys->hddraw_dll );
 888         p_vout->p_sys->hddraw_dll = NULL;
 889     }
 890 }
 891
 892 /*****************************************************************************
 893  * DirectXCloseDisplay: close and reset the DirectX display device
 894  *****************************************************************************
 895  * This function returns all resources allocated by DirectXCreateDisplay.
 896  *****************************************************************************/
 897 static void DirectXCloseDisplay( vout_thread_t *p_vout )
 898 {
 899     msg_Dbg( p_vout, "DirectXCloseDisplay" );
 900
 901     if( p_vout->p_sys->p_clipper != NULL )
 902     {
 903         msg_Dbg( p_vout, "DirectXCloseDisplay clipper" );
 904         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
 905         p_vout->p_sys->p_clipper = NULL;
 906     }
 907
 908     if( p_vout->p_sys->p_display != NULL )
 909     {
 910         msg_Dbg( p_vout, "DirectXCloseDisplay display" );
 911         IDirectDrawSurface2_Release( p_vout->p_sys->p_display );
 912         p_vout->p_sys->p_display = NULL;
 913     }
 914 }
 915
 916 /*****************************************************************************
 917  * DirectXCloseSurface: close the YUV overlay or RGB surface.
 918  *****************************************************************************
 919  * This function returns all resources allocated for the surface.
 920  *****************************************************************************/
 921 static void DirectXCloseSurface( vout_thread_t *p_vout,
 922                                  LPDIRECTDRAWSURFACE2 p_surface )
 923 {
 924     msg_Dbg( p_vout, "DirectXCloseSurface" );
 925     if( p_surface != NULL )
 926     {
 927         IDirectDrawSurface2_Release( p_surface );
 928     }
 929 }
 930
 931 /*****************************************************************************
 932  * NewPictureVec: allocate a vector of identical pictures
 933  *****************************************************************************
 934  * Returns 0 on success, -1 otherwise
 935  *****************************************************************************/
 936 static int NewPictureVec( vout_thread_t *p_vout, picture_t *p_pic,
 937                           int i_num_pics )
 938 {
 939     int i;
 940     vlc_bool_t b_result_ok;
 941     LPDIRECTDRAWSURFACE2 p_surface;
 942
 943     msg_Dbg( p_vout, "NewPictureVec" );
 944
 945     I_OUTPUTPICTURES = 0;
 946
 947     /* First we try to use an YUV overlay surface.
 948      * The overlay surface that we create won't be used to decode directly
 949      * into it because accessing video memory directly is way to slow (remember
 950      * that pictures are decoded macroblock per macroblock). Instead the video
 951      * will be decoded in picture buffers in system memory which will then be
 952      * memcpy() to the overlay surface. */
 953     if( p_vout->p_sys->b_using_overlay )
 954     {
 955         /* Triple buffering rocks! it doesn't have any processing overhead
 956          * (you don't have to wait for the vsync) and provides for a very nice
 957          * video quality (no tearing). */
 958
 959         b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
 960                                             p_vout->output.i_chroma,
 961                                             p_vout->p_sys->b_using_overlay,
 962                                             2 /* number of backbuffers */ );
 963
 964         if( !b_result_ok )
 965             /* Try to reduce the number of backbuffers */
 966             b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
 967                                                 p_vout->output.i_chroma,
 968                                                 p_vout->p_sys->b_using_overlay,
 969                                                 0 /* number of backbuffers */);
 970
 971         if( b_result_ok )
 972         {
 973             DDSCAPS dds_caps;
 974             picture_t front_pic;
 975             picture_sys_t front_pic_sys;
 976             front_pic.p_sys = &front_pic_sys;
 977
 978             /* Allocate internal structure */
 979             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
 980             if( p_pic[0].p_sys == NULL )
 981             {
 982                 DirectXCloseSurface( p_vout, p_surface );
 983                 return -1;
 984             }
 985
 986             /* set front buffer */
 987             p_pic[0].p_sys->p_front_surface = p_surface;
 988
 989             /* Get the back buffer */
 990             memset( &dds_caps, 0, sizeof( DDSCAPS ) );
 991             dds_caps.dwCaps = DDSCAPS_BACKBUFFER;
 992             if( DD_OK != IDirectDrawSurface2_GetAttachedSurface(
 993                                                 p_surface, &dds_caps,
 994                                                 &p_pic[0].p_sys->p_surface ) )
 995             {
 996                 msg_Warn( p_vout, "NewPictureVec could not get back buffer" );
 997                 /* front buffer is the same as back buffer */
 998                 p_pic[0].p_sys->p_surface = p_surface;
 999             }
1000
1001
1002             p_vout->p_sys->p_current_surface = front_pic.p_sys->p_surface =
1003                 p_pic[0].p_sys->p_front_surface;
1004
1005             /* reset the front buffer memory */
1006             if( DirectXGetSurfaceDesc( &front_pic ) &&
1007                 UpdatePictureStruct( p_vout, &front_pic,
1008                                      p_vout->output.i_chroma ) )
1009             {
1010                 int i,j;
1011                 for( i = 0; i < front_pic.i_planes; i++ )
1012                     for( j = 0; j < front_pic.p[i].i_lines; j++)
1013                         memset( front_pic.p[i].p_pixels + j *
1014                                 front_pic.p[i].i_pitch, 127,
1015                                 front_pic.p[i].i_visible_pitch );
1016             }
1017
1018             DirectXUpdateOverlay( p_vout );
1019             I_OUTPUTPICTURES = 1;
1020             msg_Dbg( p_vout, "DirectX YUV overlay created successfully" );
1021         }
1022     }
1023
1024     /* As we can't have an overlay, we'll try to create a plain offscreen
1025      * surface. This surface will reside in video memory because there's a
1026      * better chance then that we'll be able to use some kind of hardware
1027      * acceleration like rescaling, blitting or YUV->RGB conversions.
1028      * We then only need to blit this surface onto the main display when we
1029      * want to display it */
1030     if( !p_vout->p_sys->b_using_overlay )
1031     {
1032
1033         if( p_vout->p_sys->b_hw_yuv )
1034             b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
1035                                                 p_vout->output.i_chroma,
1036                                                 p_vout->p_sys->b_using_overlay,
1037                                                 0 /* no back buffers */ );
1038
1039         if( !p_vout->p_sys->b_hw_yuv || !b_result_ok )
1040         {
1041             /* Our last choice is to use a plain RGB surface */
1042             DDPIXELFORMAT ddpfPixelFormat;
1043
1044             ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1045             IDirectDrawSurface2_GetPixelFormat( p_vout->p_sys->p_display,
1046                                                 &ddpfPixelFormat );
1047
1048             if( ddpfPixelFormat.dwFlags & DDPF_RGB )
1049             {
1050                 switch( ddpfPixelFormat.dwRGBBitCount )
1051                 {
1052                 case 8: /* FIXME: set the palette */
1053                     p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
1054                     break;
1055                 case 15:
1056                     p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
1057                     break;
1058                 case 16:
1059                     p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
1060                     break;
1061                 case 24:
1062                     p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
1063                     break;
1064                 case 32:
1065                     p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
1066                     break;
1067                 default:
1068                     msg_Err( p_vout, "unknown screen depth" );
1069                     return 0;
1070                 }
1071                 p_vout->output.i_rmask = ddpfPixelFormat.dwRBitMask;
1072                 p_vout->output.i_gmask = ddpfPixelFormat.dwGBitMask;
1073                 p_vout->output.i_bmask = ddpfPixelFormat.dwBBitMask;
1074             }
1075
1076             p_vout->p_sys->b_hw_yuv = 0;
1077
1078             b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
1079                                                 p_vout->output.i_chroma,
1080                                                 p_vout->p_sys->b_using_overlay,
1081                                                 0 /* no back buffers */ );
1082         }
1083
1084         if( b_result_ok )
1085         {
1086             /* Allocate internal structure */
1087             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1088             if( p_pic[0].p_sys == NULL )
1089             {
1090                 DirectXCloseSurface( p_vout, p_surface );
1091                 return -1;
1092             }
1093             p_pic[0].p_sys->p_surface = p_pic[0].p_sys->p_front_surface
1094                 = p_surface;
1095
1096             I_OUTPUTPICTURES = 1;
1097
1098             msg_Dbg( p_vout, "DirectX plain surface created successfully" );
1099         }
1100     }
1101
1102
1103     /* Now that we've got all our direct-buffers, we can finish filling in the
1104      * picture_t structures */
1105     for( i = 0; i < I_OUTPUTPICTURES; i++ )
1106     {
1107         p_pic[i].i_status = DESTROYED_PICTURE;
1108         p_pic[i].i_type   = DIRECT_PICTURE;
1109         PP_OUTPUTPICTURE[i] = &p_pic[i];
1110
1111         if( !DirectXGetSurfaceDesc( &p_pic[i] ) )
1112         {
1113             /* AAARRGG */
1114             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1115             I_OUTPUTPICTURES = 0;
1116             return -1;
1117         }
1118
1119         if( !UpdatePictureStruct(p_vout, &p_pic[i], p_vout->output.i_chroma) )
1120         {
1121
1122             /* Unknown chroma, tell the guy to get lost */
1123             msg_Err( p_vout, "never heard of chroma 0x%.8x (%4.4s)",
1124                      p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma );
1125             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1126             I_OUTPUTPICTURES = 0;
1127             return -1;
1128         }
1129     }
1130
1131     msg_Dbg( p_vout, "End NewPictureVec");
1132     return 0;
1133 }
1134
1135 /*****************************************************************************
1136  * FreePicture: destroy a picture vector allocated with NewPictureVec
1137  *****************************************************************************
1138  *
1139  *****************************************************************************/
1140 static void FreePictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1141                             int i_num_pics )
1142 {
1143     int i;
1144
1145     for( i = 0; i < i_num_pics; i++ )
1146     {
1147         DirectXCloseSurface( p_vout, p_pic[i].p_sys->p_front_surface );
1148
1149         for( i = 0; i < i_num_pics; i++ )
1150         {
1151             free( p_pic[i].p_sys );
1152         }
1153     }
1154 }
1155
1156 /*****************************************************************************
1157  * UpdatePictureStruct: updates the internal data in the picture_t structure
1158  *****************************************************************************
1159  * This will setup stuff for use by the video_output thread
1160  *****************************************************************************/
1161 static int UpdatePictureStruct( vout_thread_t *p_vout, picture_t *p_pic,
1162                                 int i_chroma )
1163 {
1164
1165     switch( p_vout->output.i_chroma )
1166     {
1167         case VLC_FOURCC('R','G','B','2'):
1168         case VLC_FOURCC('R','V','1','5'):
1169         case VLC_FOURCC('R','V','1','6'):
1170         case VLC_FOURCC('R','V','2','4'):
1171         case VLC_FOURCC('R','V','3','2'):
1172             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1173             p_pic->p->i_lines = p_vout->output.i_height;
1174             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1175             switch( p_vout->output.i_chroma )
1176             {
1177                 case VLC_FOURCC('R','G','B','2'):
1178                     p_pic->p->i_pixel_pitch = 1;
1179                     break;
1180                 case VLC_FOURCC('R','V','1','5'):
1181                 case VLC_FOURCC('R','V','1','6'):
1182                     p_pic->p->i_pixel_pitch = 2;
1183                     break;
1184                 case VLC_FOURCC('R','V','2','4'):
1185                 case VLC_FOURCC('R','V','3','2'):
1186                     p_pic->p->i_pixel_pitch = 4;
1187                     break;
1188                 default:
1189                     return -1;
1190             }
1191             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1192               p_pic->p->i_pixel_pitch;
1193             p_pic->i_planes = 1;
1194             break;
1195
1196         case VLC_FOURCC('Y','V','1','2'):
1197
1198             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1199             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1200             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1201             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1202             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1203               p_pic->p[Y_PLANE].i_pixel_pitch;
1204
1205             p_pic->V_PIXELS =  p_pic->Y_PIXELS
1206               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1207             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1208             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1209             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1210             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width *
1211               p_pic->p[V_PLANE].i_pixel_pitch;
1212
1213             p_pic->U_PIXELS = p_pic->V_PIXELS
1214               + p_pic->p[V_PLANE].i_lines * p_pic->p[V_PLANE].i_pitch;
1215             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1216             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1217             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1218             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width *
1219               p_pic->p[U_PLANE].i_pixel_pitch;
1220
1221             p_pic->i_planes = 3;
1222             break;
1223
1224         case VLC_FOURCC('I','Y','U','V'):
1225
1226             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1227             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1228             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1229             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1230             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1231               p_pic->p[Y_PLANE].i_pixel_pitch;
1232
1233             p_pic->U_PIXELS = p_pic->Y_PIXELS
1234               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1235             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1236             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1237             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1238             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width *
1239               p_pic->p[U_PLANE].i_pixel_pitch;
1240
1241             p_pic->V_PIXELS =  p_pic->U_PIXELS
1242               + p_pic->p[U_PLANE].i_lines * p_pic->p[U_PLANE].i_pitch;
1243             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1244             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1245             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1246             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width *
1247               p_pic->p[V_PLANE].i_pixel_pitch;
1248
1249             p_pic->i_planes = 3;
1250             break;
1251
1252         case VLC_FOURCC('Y','U','Y','2'):
1253
1254             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1255             p_pic->p->i_lines = p_vout->output.i_height;
1256             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1257             p_pic->p->i_pixel_pitch = 2;
1258             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1259               p_pic->p->i_pixel_pitch;
1260
1261             p_pic->i_planes = 1;
1262             break;
1263
1264         default:
1265             /* Not supported */
1266             return 0;
1267
1268     }
1269
1270     return 1;
1271 }
1272
1273 /*****************************************************************************
1274  * DirectXGetDDrawCaps: Probe the capabilities of the hardware
1275  *****************************************************************************
1276  * It is nice to know which features are supported by the hardware so we can
1277  * find ways to optimize our rendering.
1278  *****************************************************************************/
1279 static void DirectXGetDDrawCaps( vout_thread_t *p_vout )
1280 {
1281     DDCAPS ddcaps;
1282     HRESULT dxresult;
1283
1284     /* This is just an indication of whether or not we'll support overlay,
1285      * but with this test we don't know if we support YUV overlay */
1286     memset( &ddcaps, 0, sizeof( DDCAPS ));
1287     ddcaps.dwSize = sizeof(DDCAPS);
1288     dxresult = IDirectDraw2_GetCaps( p_vout->p_sys->p_ddobject,
1289                                      &ddcaps, NULL );
1290     if(dxresult != DD_OK )
1291     {
1292         msg_Warn( p_vout, "cannot get caps" );
1293     }
1294     else
1295     {
1296         BOOL bHasOverlay, bHasOverlayFourCC, bCanClipOverlay,
1297              bHasColorKey, bCanStretch;
1298
1299         /* Determine if the hardware supports overlay surfaces */
1300         bHasOverlay = ((ddcaps.dwCaps & DDCAPS_OVERLAY) ==
1301                        DDCAPS_OVERLAY) ? TRUE : FALSE;
1302         /* Determine if the hardware supports overlay surfaces */
1303         bHasOverlayFourCC = ((ddcaps.dwCaps & DDCAPS_OVERLAYFOURCC) ==
1304                        DDCAPS_OVERLAYFOURCC) ? TRUE : FALSE;
1305         /* Determine if the hardware supports overlay surfaces */
1306         bCanClipOverlay = ((ddcaps.dwCaps & DDCAPS_OVERLAYCANTCLIP) ==
1307                        0 ) ? TRUE : FALSE;
1308         /* Determine if the hardware supports colorkeying */
1309         bHasColorKey = ((ddcaps.dwCaps & DDCAPS_COLORKEY) ==
1310                         DDCAPS_COLORKEY) ? TRUE : FALSE;
1311         /* Determine if the hardware supports scaling of the overlay surface */
1312         bCanStretch = ((ddcaps.dwCaps & DDCAPS_OVERLAYSTRETCH) ==
1313                        DDCAPS_OVERLAYSTRETCH) ? TRUE : FALSE;
1314         msg_Dbg( p_vout, "DirectDraw Capabilities: overlay=%i yuvoverlay=%i "
1315                          "can_clip_overlay=%i colorkey=%i stretch=%i",
1316                          bHasOverlay, bHasOverlayFourCC, bCanClipOverlay,
1317                          bHasColorKey, bCanStretch );
1318
1319         /* Overlay clipping support is interesting for us as it means we can
1320          * get rid of the colorkey alltogether */
1321         p_vout->p_sys->b_caps_overlay_clipping = bCanClipOverlay;
1322
1323     }
1324 }
1325
1326 /*****************************************************************************
1327  * DirectXGetSurfaceDesc: Get some more information about the surface
1328  *****************************************************************************
1329  * This function get and stores the surface descriptor which among things
1330  * has the pointer to the picture data.
1331  *****************************************************************************/
1332 static int DirectXGetSurfaceDesc( picture_t *p_pic )
1333 {
1334     HRESULT dxresult;
1335
1336     /* Lock the surface to get a valid pointer to the picture buffer */
1337     memset( &p_pic->p_sys->ddsd, 0, sizeof( DDSURFACEDESC ));
1338     p_pic->p_sys->ddsd.dwSize = sizeof(DDSURFACEDESC);
1339     dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface,
1340                                          NULL, &p_pic->p_sys->ddsd,
1341                                          DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1342                                          NULL );
1343     if ( dxresult == DDERR_SURFACELOST )
1344     {
1345         /* Your surface can be lost so be sure
1346          * to check this and restore it if needed */
1347         dxresult = IDirectDrawSurface2_Restore( p_pic->p_sys->p_surface );
1348         dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1349                                              &p_pic->p_sys->ddsd,
1350                                              DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1351                                              NULL);
1352     }
1353     if( dxresult != DD_OK )
1354     {
1355 //X        msg_Err( p_vout, "DirectXGetSurfaceDesc cannot lock surface" );
1356         return 0;
1357     }
1358
1359     /* Unlock the Surface */
1360     dxresult = IDirectDrawSurface2_Unlock( p_pic->p_sys->p_surface, NULL );
1361
1362     return 1;
1363 }