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 1.29 2002/04/01 16:08:23 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 enables us to display
  34  * video in window mode.
  35  * Another fallback method (which isn't implemented) would be take the
  36  * exclusive control of the screen so we could spare the blitting process and
  37  * decode directly to video memory. This should theoretically allow for better
  38  * performance (although on my system it is actually slower) but this is
  39  * restricted to fullscreen video.
  40  *
  41  *****************************************************************************/
  42 #include <errno.h>                                                 /* ENOMEM */
  43 #include <stdlib.h>                                                /* free() */
  44 #include <string.h>                                            /* strerror() */
  45
  46 #include <videolan/vlc.h>
  47
  48 #include <ddraw.h>
  49
  50 #include "netutils.h"
  51
  52 #include "video.h"
  53 #include "video_output.h"
  54
  55 #include "interface.h"
  56
  57 #include "vout_directx.h"
  58
  59 /*****************************************************************************
  60  * DirectDraw GUIDs.
  61  * Defining them here allows us to get rid of the dxguid library during
  62  * the linking stage.
  63  *****************************************************************************/
  64 #include <initguid.h>
  65 DEFINE_GUID( IID_IDirectDraw2, 0xB3A6F3E0,0x2B43,0x11CF,0xA2,0xDE,0x00,0xAA,0x00,0xB9,0x33,0x56 );
  66 DEFINE_GUID( IID_IDirectDrawSurface3, 0xDA044E00,0x69B2,0x11D0,0xA1,0xD5,0x00,0xAA,0x00,0xB8,0xDF,0xBB );
  67
  68 /*****************************************************************************
  69  * Local prototypes.
  70  *****************************************************************************/
  71 static int  vout_Create    ( vout_thread_t * );
  72 static void vout_Destroy   ( vout_thread_t * );
  73 static int  vout_Init      ( vout_thread_t * );
  74 static void vout_End       ( vout_thread_t * );
  75 static int  vout_Manage    ( vout_thread_t * );
  76 static void vout_Render    ( vout_thread_t *, picture_t * );
  77 static void vout_Display   ( vout_thread_t *, picture_t * );
  78
  79 static int  NewPictureVec  ( vout_thread_t *, picture_t *, int );
  80 static void FreePictureVec ( vout_thread_t *, picture_t *, int );
  81 static int  UpdatePictureStruct( vout_thread_t *, picture_t *, int );
  82
  83 static int  DirectXInitDDraw      ( vout_thread_t *p_vout );
  84 static void DirectXCloseDDraw     ( vout_thread_t *p_vout );
  85 static int  DirectXCreateDisplay  ( vout_thread_t *p_vout );
  86 static void DirectXCloseDisplay   ( vout_thread_t *p_vout );
  87 static int  DirectXCreateSurface  ( vout_thread_t *p_vout,
  88                                     LPDIRECTDRAWSURFACE3 *, int, int );
  89 static void DirectXCloseSurface   ( vout_thread_t *p_vout,
  90                                     LPDIRECTDRAWSURFACE3 );
  91 static int  DirectXCreateClipper  ( vout_thread_t *p_vout );
  92 static void DirectXGetDDrawCaps   ( vout_thread_t *p_vout );
  93 static int  DirectXGetSurfaceDesc ( picture_t *p_pic );
  94
  95 /*****************************************************************************
  96  * Functions exported as capabilities. They are declared as static so that
  97  * we don't pollute the namespace too much.
  98  *****************************************************************************/
  99 void _M( vout_getfunctions )( function_list_t * p_function_list )
 100 {
 101     p_function_list->functions.vout.pf_create     = vout_Create;
 102     p_function_list->functions.vout.pf_init       = vout_Init;
 103     p_function_list->functions.vout.pf_end        = vout_End;
 104     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 105     p_function_list->functions.vout.pf_manage     = vout_Manage;
 106     p_function_list->functions.vout.pf_render     = vout_Render;
 107     p_function_list->functions.vout.pf_display    = vout_Display;
 108 }
 109
 110 /*****************************************************************************
 111  * vout_Create: allocate DirectX video thread output method
 112  *****************************************************************************
 113  * This function allocates and initialize the DirectX vout method.
 114  *****************************************************************************/
 115 static int vout_Create( vout_thread_t *p_vout )
 116 {
 117     /* Allocate structure */
 118     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 119     if( p_vout->p_sys == NULL )
 120     {
 121         intf_ErrMsg( "vout error: can't create p_sys (%s)", strerror(ENOMEM) );
 122         return( 1 );
 123     }
 124
 125     /* Initialisations */
 126     p_vout->p_sys->p_ddobject = NULL;
 127     p_vout->p_sys->p_display = NULL;
 128     p_vout->p_sys->p_current_surface = NULL;
 129     p_vout->p_sys->p_clipper = NULL;
 130     p_vout->p_sys->hbrush = NULL;
 131     p_vout->p_sys->hwnd = NULL;
 132     p_vout->p_sys->i_changes = 0;
 133     p_vout->p_sys->b_event_thread_die = 0;
 134     p_vout->p_sys->b_caps_overlay_clipping = 0;
 135     SetRectEmpty( &p_vout->p_sys->rect_display );
 136     p_vout->p_sys->b_using_overlay = !config_GetIntVariable( "nooverlay" );
 137
 138     p_vout->p_sys->b_cursor = 1;
 139
 140     p_vout->p_sys->b_cursor_autohidden = 0;
 141     p_vout->p_sys->i_lastmoved = mdate();
 142
 143     /* Set main window's size */
 144     p_vout->p_sys->i_window_width = p_vout->i_window_width;
 145     p_vout->p_sys->i_window_height = p_vout->i_window_height;
 146
 147     /* Set locks and condition variables */
 148     vlc_mutex_init( &p_vout->p_sys->event_thread_lock );
 149     vlc_cond_init( &p_vout->p_sys->event_thread_wait );
 150     p_vout->p_sys->i_event_thread_status = THREAD_CREATE;
 151
 152     /* Create the DirectXEventThread, this thread is created by us to isolate
 153      * the Win32 PeekMessage function calls. We want to do this because
 154      * Windows can stay blocked inside this call for a long time, and when
 155      * this happens it thus blocks vlc's video_output thread.
 156      * DirectXEventThread will take care of the creation of the video
 157      * window (because PeekMessage has to be called from the same thread which
 158      * created the window). */
 159     intf_WarnMsg( 3, "vout: vout_Create creating DirectXEventThread" );
 160     if( vlc_thread_create( &p_vout->p_sys->event_thread_id,
 161                            "DirectX Events Thread",
 162                            (void *) DirectXEventThread, (void *) p_vout) )
 163     {
 164         intf_ErrMsg( "vout error: can't create DirectXEventThread" );
 165         intf_ErrMsg("vout error: %s", strerror(ENOMEM));
 166         free( p_vout->p_sys );
 167         return( 1 );
 168     }
 169
 170     /* We need to wait for the actual creation of the thread and window */
 171     vlc_mutex_lock( &p_vout->p_sys->event_thread_lock );
 172     if( p_vout->p_sys->i_event_thread_status == THREAD_CREATE )
 173     {
 174         vlc_cond_wait ( &p_vout->p_sys->event_thread_wait,
 175                         &p_vout->p_sys->event_thread_lock );
 176     }
 177     vlc_mutex_unlock( &p_vout->p_sys->event_thread_lock );
 178     if( p_vout->p_sys->i_event_thread_status != THREAD_READY )
 179     {
 180         intf_ErrMsg( "vout error: DirectXEventThread failed" );
 181         free( p_vout->p_sys );
 182         return( 1 );
 183     }
 184
 185     intf_WarnMsg( 3, "vout: vout_Create DirectXEventThread running" );
 186
 187
 188     /* Initialise DirectDraw */
 189     if( DirectXInitDDraw( p_vout ) )
 190     {
 191         intf_ErrMsg( "vout error: can't initialise DirectDraw" );
 192
 193         /* Kill DirectXEventThread */
 194         p_vout->p_sys->b_event_thread_die = 1;
 195         /* we need to be sure DirectXEventThread won't stay stuck in
 196          * GetMessage, so we send a fake message */
 197         PostMessage( p_vout->p_sys->hwnd, WM_CHAR, (WPARAM)'^', 0);
 198         vlc_thread_join( p_vout->p_sys->event_thread_id );
 199
 200         return ( 1 );
 201     }
 202
 203     /* Create the directx display */
 204     if( DirectXCreateDisplay( p_vout ) )
 205     {
 206         intf_ErrMsg( "vout error: can't initialise DirectDraw" );
 207         DirectXCloseDDraw( p_vout );
 208
 209         /* Kill DirectXEventThread */
 210         p_vout->p_sys->b_event_thread_die = 1;
 211         /* we need to be sure DirectXEventThread won't stay stuck in
 212          * GetMessage, so we send a fake message */
 213         PostMessage( p_vout->p_sys->hwnd, WM_CHAR, (WPARAM)'^', 0);
 214         vlc_thread_join( p_vout->p_sys->event_thread_id );
 215
 216         return ( 1 );
 217     }
 218
 219     /* Attach the current thread input queue to the events thread qeue.
 220      * This allows us to hide or show the cursor in vout_Manage() */
 221     ShowCursor( TRUE ); ShowCursor( FALSE );           /* create input queue */
 222     AttachThreadInput( GetCurrentThreadId(),
 223                        GetWindowThreadProcessId( p_vout->p_sys->hwnd, NULL ),
 224                        1 );
 225
 226     return( 0 );
 227 }
 228
 229 /*****************************************************************************
 230  * vout_Init: initialize DirectX video thread output method
 231  *****************************************************************************
 232  * This function create the directx surfaces needed by the output thread.
 233  * It is called at the beginning of the thread.
 234  *****************************************************************************/
 235 static int vout_Init( vout_thread_t *p_vout )
 236 {
 237
 238     /* Initialize the output structure.
 239      * Since DirectDraw can do rescaling for us, stick to the default
 240      * coordinates and aspect. */
 241     p_vout->output.i_width  = p_vout->render.i_width;
 242     p_vout->output.i_height = p_vout->render.i_height;
 243     p_vout->output.i_aspect = p_vout->render.i_aspect;
 244
 245 #define MAX_DIRECTBUFFERS 1
 246
 247     NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 248
 249     /* Change the window title bar text */
 250     if( p_vout->p_sys->b_using_overlay )
 251         SetWindowText( p_vout->p_sys->hwnd,
 252                        "VLC DirectX (using hardware overlay)" );
 253
 254     return( 0 );
 255 }
 256
 257 /*****************************************************************************
 258  * vout_End: terminate Sys video thread output method
 259  *****************************************************************************
 260  * Terminate an output method created by vout_Create.
 261  * It is called at the end of the thread.
 262  *****************************************************************************/
 263 static void vout_End( vout_thread_t *p_vout )
 264 {
 265     FreePictureVec( p_vout, p_vout->p_picture, I_OUTPUTPICTURES );
 266     return;
 267 }
 268
 269 /*****************************************************************************
 270  * vout_Destroy: destroy Sys video thread output method
 271  *****************************************************************************
 272  * Terminate an output method created by vout_Create
 273  *****************************************************************************/
 274 static void vout_Destroy( vout_thread_t *p_vout )
 275 {
 276     intf_WarnMsg( 3, "vout: vout_Destroy" );
 277     DirectXCloseDisplay( p_vout );
 278     DirectXCloseDDraw( p_vout );
 279
 280     /* Kill DirectXEventThread */
 281     p_vout->p_sys->b_event_thread_die = 1;
 282     /* we need to be sure DirectXEventThread won't stay stuck in GetMessage,
 283      * so we send a fake message */
 284     if( p_vout->p_sys->i_event_thread_status == THREAD_READY &&
 285         p_vout->p_sys->hwnd )
 286     {
 287         PostMessage( p_vout->p_sys->hwnd, WM_CHAR, (WPARAM)'q', 0);
 288         vlc_thread_join( p_vout->p_sys->event_thread_id );
 289     }
 290
 291     if( p_vout->p_sys != NULL )
 292     {
 293         free( p_vout->p_sys );
 294         p_vout->p_sys = NULL;
 295     }
 296 }
 297
 298 /*****************************************************************************
 299  * vout_Manage: handle Sys events
 300  *****************************************************************************
 301  * This function should be called regularly by the video output thread.
 302  * It returns a non null value if an error occured.
 303  *****************************************************************************/
 304 static int vout_Manage( vout_thread_t *p_vout )
 305 {
 306     WINDOWPLACEMENT window_placement;
 307
 308     /* We used to call the Win32 PeekMessage function here to read the window
 309      * messages. But since window can stay blocked into this function for a
 310      * long time (for example when you move your window on the screen), I
 311      * decided to isolate PeekMessage in another thread. */
 312
 313     /*
 314      * Scale Change
 315      */
 316     if( p_vout->i_changes & VOUT_SCALE_CHANGE
 317         || p_vout->p_sys->i_changes & VOUT_SCALE_CHANGE)
 318     {
 319         intf_WarnMsg( 3, "vout: vout_Manage Scale Change" );
 320         if( !p_vout->p_sys->b_using_overlay )
 321             InvalidateRect( p_vout->p_sys->hwnd, NULL, TRUE );
 322         else
 323             DirectXUpdateOverlay( p_vout );
 324         p_vout->i_changes &= ~VOUT_SCALE_CHANGE;
 325         p_vout->p_sys->i_changes &= ~VOUT_SCALE_CHANGE;
 326     }
 327
 328     /*
 329      * Size Change
 330      */
 331     if( p_vout->i_changes & VOUT_SIZE_CHANGE
 332         || p_vout->p_sys->i_changes & VOUT_SIZE_CHANGE )
 333     {
 334         intf_WarnMsg( 3, "vout: vout_Manage Size Change" );
 335         if( !p_vout->p_sys->b_using_overlay )
 336             InvalidateRect( p_vout->p_sys->hwnd, NULL, TRUE );
 337         else
 338             DirectXUpdateOverlay( p_vout );
 339         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 340         p_vout->p_sys->i_changes &= ~VOUT_SIZE_CHANGE;
 341     }
 342
 343     /*
 344      * Fullscreen change
 345      */
 346     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
 347         || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
 348     {
 349         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 350
 351         /* We need to switch between Maximized and Normal sized window */
 352         window_placement.length = sizeof(WINDOWPLACEMENT);
 353         GetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 354         if( p_vout->b_fullscreen )
 355         {
 356             /* Maximized window */
 357             window_placement.showCmd = SW_SHOWMAXIMIZED;
 358             /* Change window style, no borders and no title bar */
 359             SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE, 0 );
 360
 361         }
 362         else
 363         {
 364             /* Normal window */
 365             window_placement.showCmd = SW_SHOWNORMAL;
 366             /* Change window style, borders and title bar */
 367             SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE,
 368                            WS_OVERLAPPEDWINDOW | WS_SIZEBOX | WS_VISIBLE );
 369         }
 370
 371         SetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 372
 373         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 374         p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 375     }
 376
 377     /*
 378      * Pointer change
 379      */
 380     if( ! p_vout->p_sys->b_cursor_autohidden &&
 381         ( mdate() - p_vout->p_sys->i_lastmoved > 5000000 ) )
 382     {
 383         /* Hide the mouse automatically */
 384         p_vout->p_sys->b_cursor_autohidden = 1;
 385         ShowCursor( FALSE );
 386     }
 387
 388 #if 0
 389     if( p_vout->i_changes & VOUT_CURSOR_CHANGE
 390         || p_vout->p_sys->i_changes & VOUT_CURSOR_CHANGE )
 391     {
 392         p_vout->p_sys->b_cursor = ! p_vout->p_sys->b_cursor;
 393
 394         ShowCursor( p_vout->p_sys->b_cursor &&
 395                      ! p_vout->p_sys->b_cursor_autohidden );
 396
 397         p_vout->i_changes &= ~VOUT_CURSOR_CHANGE;
 398         p_vout->p_sys->i_changes &= ~VOUT_CURSOR_CHANGE;
 399     }
 400 #endif
 401
 402     /* Check if the event thread is still running */
 403     if( p_vout->p_sys->b_event_thread_die )
 404         return 1; /* exit */
 405
 406     return( 0 );
 407 }
 408
 409 /*****************************************************************************
 410  * vout_Render: render previously calculated output
 411  *****************************************************************************/
 412 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
 413 {
 414     ;
 415 }
 416
 417 /*****************************************************************************
 418  * vout_Display: displays previously rendered output
 419  *****************************************************************************
 420  * This function sends the currently rendered image to the display, wait until
 421  * it is displayed and switch the two rendering buffers, preparing next frame.
 422  *****************************************************************************/
 423 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
 424 {
 425     HRESULT dxresult;
 426
 427     if( (p_vout->p_sys->p_display == NULL) )
 428     {
 429         intf_WarnMsg( 3, "vout error: vout_Display no display!!" );
 430         return;
 431     }
 432
 433     if( !p_vout->p_sys->b_using_overlay )
 434     {
 435         DDBLTFX  ddbltfx;
 436
 437         /* We ask for the "NOTEARING" option */
 438         memset( &ddbltfx, 0, sizeof(DDBLTFX) );
 439         ddbltfx.dwSize = sizeof(DDBLTFX);
 440         ddbltfx.dwDDFX = DDBLTFX_NOTEARING | DDBLT_ASYNC;
 441
 442         /* Blit video surface to display */
 443         dxresult = IDirectDrawSurface3_Blt(p_vout->p_sys->p_display,
 444                                            &p_vout->p_sys->rect_dest_clipped,
 445                                            p_pic->p_sys->p_surface,
 446                                            &p_vout->p_sys->rect_src_clipped,
 447                                            0, &ddbltfx );
 448         if ( dxresult == DDERR_SURFACELOST )
 449         {
 450             /* Our surface can be lost so be sure
 451              * to check this and restore it if needed */
 452             IDirectDrawSurface3_Restore( p_vout->p_sys->p_display );
 453
 454             /* Now that the surface has been restored try to display again */
 455             dxresult = IDirectDrawSurface3_Blt(p_vout->p_sys->p_display,
 456                                            &p_vout->p_sys->rect_dest_clipped,
 457                                            p_pic->p_sys->p_surface,
 458                                            &p_vout->p_sys->rect_src_clipped,
 459                                            0, &ddbltfx );
 460         }
 461
 462         if( dxresult != DD_OK )
 463         {
 464             intf_WarnMsg( 3, "vout: could not Blit the surface" );
 465             return;
 466         }
 467
 468     }
 469     else /* using overlay */
 470     {
 471
 472 #if 0
 473         /* Flip the overlay buffers */
 474         dxresult = IDirectDrawSurface3_Flip( p_pic->p_sys->p_front_surface,
 475                                              NULL, DDFLIP_WAIT );
 476         if ( dxresult == DDERR_SURFACELOST )
 477         {
 478             /* Our surface can be lost so be sure
 479              * to check this and restore it if needed */
 480             IDirectDrawSurface3_Restore( p_vout->p_sys->p_display );
 481             IDirectDrawSurface3_Restore( p_pic->p_sys->p_front_surface );
 482
 483             /* Now that the surface has been restored try to display again */
 484             dxresult = IDirectDrawSurface3_Flip( p_pic->p_sys->p_front_surface,
 485                                                  NULL, DDFLIP_WAIT );
 486             DirectXUpdateOverlay( p_vout );
 487         }
 488
 489         if( dxresult != DD_OK )
 490             intf_WarnMsg( 8, "vout: couldn't flip overlay surface" );
 491 #endif
 492
 493         if( !DirectXGetSurfaceDesc( p_pic ) )
 494         {
 495             /* AAARRGG */
 496             intf_ErrMsg( "vout error: vout_Display cannot get surface desc" );
 497             return;
 498         }
 499
 500         if( !UpdatePictureStruct( p_vout, p_pic, p_vout->output.i_chroma ) )
 501         {
 502             /* AAARRGG */
 503             intf_ErrMsg( "vout error: vout_Display unvalid pic chroma" );
 504             return;
 505         }
 506
 507         /* set currently displayed pic */
 508         p_vout->p_sys->p_current_surface = p_pic->p_sys->p_front_surface;
 509     }
 510
 511 }
 512
 513
 514 /* following functions are local */
 515
 516 /*****************************************************************************
 517  * DirectXInitDDraw: Takes care of all the DirectDraw initialisations
 518  *****************************************************************************
 519  * This function initialise and allocate resources for DirectDraw.
 520  *****************************************************************************/
 521 static int DirectXInitDDraw( vout_thread_t *p_vout )
 522 {
 523     HRESULT    dxresult;
 524     HRESULT    (WINAPI *OurDirectDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *);
 525     LPDIRECTDRAW  p_ddobject;
 526
 527     intf_WarnMsg( 3, "vout: DirectXInitDDraw" );
 528
 529     /* load direct draw DLL */
 530     p_vout->p_sys->hddraw_dll = LoadLibrary("DDRAW.DLL");
 531     if( p_vout->p_sys->hddraw_dll == NULL )
 532     {
 533         intf_WarnMsg( 3, "vout: DirectXInitDDraw failed loading ddraw.dll" );
 534         return( 1 );
 535     }
 536
 537     OurDirectDrawCreate =
 538       (void *)GetProcAddress(p_vout->p_sys->hddraw_dll, "DirectDrawCreate");
 539     if ( OurDirectDrawCreate == NULL )
 540     {
 541         intf_ErrMsg( "vout error: DirectXInitDDraw failed GetProcAddress" );
 542         FreeLibrary( p_vout->p_sys->hddraw_dll );
 543         p_vout->p_sys->hddraw_dll = NULL;
 544         return( 1 );
 545     }
 546
 547     /* Initialize DirectDraw now */
 548     dxresult = OurDirectDrawCreate( NULL, &p_ddobject, NULL );
 549     if( dxresult != DD_OK )
 550     {
 551         intf_ErrMsg( "vout error: DirectXInitDDraw can't initialize DDraw" );
 552         p_vout->p_sys->p_ddobject = NULL;
 553         FreeLibrary( p_vout->p_sys->hddraw_dll );
 554         p_vout->p_sys->hddraw_dll = NULL;
 555         return( 1 );
 556     }
 557
 558     /* Set DirectDraw Cooperative level, ie what control we want over Windows
 559      * display */
 560     dxresult = IDirectDraw_SetCooperativeLevel( p_ddobject,
 561                                            p_vout->p_sys->hwnd, DDSCL_NORMAL );
 562     if( dxresult != DD_OK )
 563     {
 564         intf_ErrMsg( "vout error: can't set direct draw cooperative level." );
 565         IDirectDraw_Release( p_ddobject );
 566         p_vout->p_sys->p_ddobject = NULL;
 567         FreeLibrary( p_vout->p_sys->hddraw_dll );
 568         p_vout->p_sys->hddraw_dll = NULL;
 569         return( 1 );
 570     }
 571
 572     /* Get the IDirectDraw2 interface */
 573     dxresult = IDirectDraw_QueryInterface( p_ddobject, &IID_IDirectDraw2,
 574                                         (LPVOID *)&p_vout->p_sys->p_ddobject );
 575     if( dxresult != DD_OK )
 576     {
 577         intf_ErrMsg( "vout error: can't get IDirectDraw2 interface." );
 578         IDirectDraw_Release( p_ddobject );
 579         p_vout->p_sys->p_ddobject = NULL;
 580         FreeLibrary( p_vout->p_sys->hddraw_dll );
 581         p_vout->p_sys->hddraw_dll = NULL;
 582         return( 1 );
 583     }
 584     else
 585     {
 586         /* Release the unused interface */
 587         IDirectDraw_Release( p_ddobject );
 588     }
 589
 590     /* Probe the capabilities of the hardware */
 591     DirectXGetDDrawCaps( p_vout );
 592
 593     intf_WarnMsg( 3, "vout: End DirectXInitDDraw" );
 594     return( 0 );
 595 }
 596
 597 /*****************************************************************************
 598  * DirectXCreateDisplay: create the DirectDraw display.
 599  *****************************************************************************
 600  * Create and initialize display according to preferences specified in the vout
 601  * thread fields.
 602  *****************************************************************************/
 603 static int DirectXCreateDisplay( vout_thread_t *p_vout )
 604 {
 605     HRESULT              dxresult;
 606     DDSURFACEDESC        ddsd;
 607     LPDIRECTDRAWSURFACE  p_display;
 608     DDPIXELFORMAT   pixel_format;
 609
 610     intf_WarnMsg( 3, "vout: DirectXCreateDisplay" );
 611
 612     /* Now get the primary surface. This surface is what you actually see
 613      * on your screen */
 614     memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 615     ddsd.dwSize = sizeof(DDSURFACEDESC);
 616     ddsd.dwFlags = DDSD_CAPS;
 617     ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
 618
 619     dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 620                                            &ddsd,
 621                                            &p_display, NULL );
 622     if( dxresult != DD_OK )
 623     {
 624         intf_ErrMsg( "vout error: can't get direct draw primary surface." );
 625         p_vout->p_sys->p_display = NULL;
 626         return( 1 );
 627     }
 628
 629     dxresult = IDirectDrawSurface_QueryInterface( p_display,
 630                                          &IID_IDirectDrawSurface3,
 631                                          (LPVOID *)&p_vout->p_sys->p_display );
 632     if ( dxresult != DD_OK )
 633     {
 634         intf_ErrMsg( "vout error: can't get IDirectDrawSurface3 interface." );
 635         IDirectDrawSurface_Release( p_display );
 636         p_vout->p_sys->p_display = NULL;
 637         return( 1 );
 638     }
 639     else
 640     {
 641         /* Release the old interface */
 642         IDirectDrawSurface_Release( p_display );
 643     }
 644
 645
 646     /* The clipper will be used only in non-overlay mode */
 647     DirectXCreateClipper( p_vout );
 648
 649
 650 #if 1
 651     /* compute the colorkey pixel value from the RGB value we've got */
 652     memset( &pixel_format, 0, sizeof( DDPIXELFORMAT ));
 653     pixel_format.dwSize = sizeof( DDPIXELFORMAT );
 654     dxresult = IDirectDrawSurface3_GetPixelFormat( p_vout->p_sys->p_display,
 655                                                    &pixel_format );
 656     if( dxresult != DD_OK )
 657         intf_WarnMsg( 3, "vout: DirectXUpdateOverlay GetPixelFormat failed" );
 658     p_vout->p_sys->i_colorkey = (DWORD)((( p_vout->p_sys->i_rgb_colorkey
 659                                            * pixel_format.dwRBitMask) / 255)
 660                                         & pixel_format.dwRBitMask);
 661 #endif
 662
 663     return( 0 );
 664 }
 665
 666
 667 /*****************************************************************************
 668  * DirectXCreateClipper: Create a clipper that will be used when blitting the
 669  *                       RGB surface to the main display.
 670  *****************************************************************************
 671  * This clipper prevents us to modify by mistake anything on the screen
 672  * which doesn't belong to our window. For example when a part of our video
 673  * window is hidden by another window.
 674  *****************************************************************************/
 675 static int DirectXCreateClipper( vout_thread_t *p_vout )
 676 {
 677     HRESULT dxresult;
 678
 679     intf_WarnMsg( 3, "vout: DirectXCreateClipper" );
 680
 681     /* Create the clipper */
 682     dxresult = IDirectDraw2_CreateClipper( p_vout->p_sys->p_ddobject, 0,
 683                                            &p_vout->p_sys->p_clipper, NULL );
 684     if( dxresult != DD_OK )
 685     {
 686         intf_WarnMsg( 3, "vout: DirectXCreateClipper can't create clipper." );
 687         p_vout->p_sys->p_clipper = NULL;
 688         return( 1 );
 689     }
 690
 691     /* associate the clipper to the window */
 692     dxresult = IDirectDrawClipper_SetHWnd(p_vout->p_sys->p_clipper, 0,
 693                                           p_vout->p_sys->hwnd);
 694     if( dxresult != DD_OK )
 695     {
 696         intf_WarnMsg( 3,
 697             "vout: DirectXCreateClipper can't attach clipper to window." );
 698         IDirectDrawSurface_Release( p_vout->p_sys->p_clipper );
 699         p_vout->p_sys->p_clipper = NULL;
 700         return( 1 );
 701     }
 702
 703     /* associate the clipper with the surface */
 704     dxresult = IDirectDrawSurface_SetClipper(p_vout->p_sys->p_display,
 705                                              p_vout->p_sys->p_clipper);
 706     if( dxresult != DD_OK )
 707     {
 708         intf_WarnMsg( 3,
 709             "vout: DirectXCreateClipper can't attach clipper to surface." );
 710         IDirectDrawSurface_Release( p_vout->p_sys->p_clipper );
 711         p_vout->p_sys->p_clipper = NULL;
 712         return( 1 );
 713     }
 714
 715     return( 0 );
 716 }
 717
 718 /*****************************************************************************
 719  * DirectXCreateSurface: create an YUV overlay or RGB surface for the video.
 720  *****************************************************************************
 721  * The best method of display is with an YUV overlay because the YUV->RGB
 722  * conversion is done in hardware.
 723  * You can also create a plain RGB surface.
 724  * ( Maybe we could also try an RGB overlay surface, which could have hardware
 725  * scaling and which would also be faster in window mode because you don't
 726  * need to do any blitting to the main display...)
 727  *****************************************************************************/
 728 static int DirectXCreateSurface( vout_thread_t *p_vout,
 729                                  LPDIRECTDRAWSURFACE3 *pp_surface_final,
 730                                  int i_chroma, int b_overlay )
 731 {
 732     HRESULT dxresult;
 733     LPDIRECTDRAWSURFACE p_surface;
 734     DDSURFACEDESC ddsd;
 735
 736     intf_WarnMsg( 3, "vout: DirectXCreateSurface" );
 737
 738     /* Create the video surface */
 739     if( b_overlay )
 740     {
 741         /* Now try to create the YUV overlay surface.
 742          * This overlay will be displayed on top of the primary surface.
 743          * A color key is used to determine whether or not the overlay will be
 744          * displayed, ie the overlay will be displayed in place of the primary
 745          * surface wherever the primary surface will have this color.
 746          * The video window has been created with a background of this color so
 747          * the overlay will be only displayed on top of this window */
 748
 749         memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 750         ddsd.dwSize = sizeof(DDSURFACEDESC);
 751         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
 752         ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
 753         ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
 754         ddsd.dwFlags = DDSD_CAPS |
 755                        DDSD_HEIGHT |
 756                        DDSD_WIDTH |
 757                      //DDSD_BACKBUFFERCOUNT |
 758                        DDSD_PIXELFORMAT;
 759         ddsd.ddsCaps.dwCaps = DDSCAPS_OVERLAY |
 760                             //DDSCAPS_COMPLEX |
 761                             //DDSCAPS_FLIP |
 762                               DDSCAPS_VIDEOMEMORY;
 763         ddsd.dwHeight = p_vout->render.i_height;
 764         ddsd.dwWidth = p_vout->render.i_width;
 765         ddsd.dwBackBufferCount = 1;                       /* One back buffer */
 766
 767         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 768                                                &ddsd,
 769                                                &p_surface, NULL );
 770         if( dxresult == DD_OK )
 771         {
 772             intf_WarnMsg( 3,"vout: DirectX YUV overlay created successfully" );
 773         }
 774         else
 775         {
 776             intf_ErrMsg( "vout error: can't create YUV overlay surface." );
 777             *pp_surface_final = NULL;
 778             return 0;
 779         }
 780     }
 781
 782     if( !b_overlay )
 783     {
 784         /* Now try to create a plain RGB surface. */
 785         memset( &ddsd, 0, sizeof( DDSURFACEDESC ) );
 786         ddsd.dwSize = sizeof(DDSURFACEDESC);
 787         ddsd.dwFlags = DDSD_HEIGHT |
 788                        DDSD_WIDTH |
 789                        DDSD_CAPS;
 790         ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN |
 791                               DDSCAPS_SYSTEMMEMORY;
 792         ddsd.dwHeight = p_vout->render.i_height;
 793         ddsd.dwWidth = p_vout->render.i_width;
 794
 795         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 796                                                &ddsd,
 797                                                &p_surface, NULL );
 798         if( dxresult == DD_OK )
 799         {
 800             intf_WarnMsg( 3,"vout: DirectX RGB surface created successfully" );
 801         }
 802         else
 803         {
 804             intf_ErrMsg( "vout error: can't create RGB surface." );
 805             *pp_surface_final = NULL;
 806             return 0;
 807         }
 808     }
 809
 810     /* Now that the surface is created, try to get a newer DirectX interface */
 811     dxresult = IDirectDrawSurface_QueryInterface( p_surface,
 812                                      &IID_IDirectDrawSurface3,
 813                                      (LPVOID *)pp_surface_final );
 814     IDirectDrawSurface_Release( p_surface );    /* Release the old interface */
 815     if ( dxresult != DD_OK )
 816     {
 817         intf_ErrMsg( "vout error: can't get IDirectDrawSurface3 interface." );
 818         *pp_surface_final = NULL;
 819         return 0;
 820     }
 821
 822     return 1;
 823 }
 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     {
 842         intf_WarnMsg( 5, "vout: DirectXUpdateOverlay no overlay !!" );
 843         return;
 844     }
 845
 846     /* The new window dimensions should already have been computed by the
 847      * caller of this function */
 848
 849     /* Position and show the overlay */
 850     memset(&ddofx, 0, sizeof(DDOVERLAYFX));
 851     ddofx.dwSize = sizeof(DDOVERLAYFX);
 852     ddofx.dckDestColorkey.dwColorSpaceLowValue = p_vout->p_sys->i_colorkey;
 853     ddofx.dckDestColorkey.dwColorSpaceHighValue = p_vout->p_sys->i_colorkey;
 854
 855     dwFlags = DDOVER_SHOW;
 856     if( !p_vout->p_sys->b_caps_overlay_clipping )
 857         dwFlags |= DDOVER_KEYDESTOVERRIDE;
 858
 859     dxresult = IDirectDrawSurface3_UpdateOverlay(
 860                                          p_vout->p_sys->p_current_surface,
 861                                          &p_vout->p_sys->rect_src_clipped,
 862                                          p_vout->p_sys->p_display,
 863                                          &p_vout->p_sys->rect_dest_clipped,
 864                                          dwFlags,
 865                                          &ddofx );
 866     if(dxresult != DD_OK)
 867     {
 868         intf_WarnMsg( 3,
 869           "vout: DirectXUpdateOverlay can't move or resize overlay" );
 870     }
 871
 872 }
 873
 874 /*****************************************************************************
 875  * DirectXCloseDDraw: Release the DDraw object allocated by DirectXInitDDraw
 876  *****************************************************************************
 877  * This function returns all resources allocated by DirectXInitDDraw.
 878  *****************************************************************************/
 879 static void DirectXCloseDDraw( vout_thread_t *p_vout )
 880 {
 881     intf_WarnMsg(3, "vout: DirectXCloseDDraw" );
 882     if( p_vout->p_sys->p_ddobject != NULL )
 883     {
 884         IDirectDraw2_Release(p_vout->p_sys->p_ddobject);
 885         p_vout->p_sys->p_ddobject = NULL;
 886     }
 887
 888     if( p_vout->p_sys->hddraw_dll != NULL )
 889     {
 890         FreeLibrary( p_vout->p_sys->hddraw_dll );
 891         p_vout->p_sys->hddraw_dll = NULL;
 892     }
 893 }
 894
 895 /*****************************************************************************
 896  * DirectXCloseDisplay: close and reset the DirectX display device
 897  *****************************************************************************
 898  * This function returns all resources allocated by DirectXCreateDisplay.
 899  *****************************************************************************/
 900 static void DirectXCloseDisplay( vout_thread_t *p_vout )
 901 {
 902     intf_WarnMsg( 3, "vout: DirectXCloseDisplay" );
 903
 904     if( p_vout->p_sys->p_clipper != NULL )
 905     {
 906         intf_WarnMsg( 3, "vout: DirectXCloseDisplay clipper" );
 907         IDirectDraw2_Release( p_vout->p_sys->p_clipper );
 908         p_vout->p_sys->p_clipper = NULL;
 909     }
 910
 911     if( p_vout->p_sys->p_display != NULL )
 912     {
 913         intf_WarnMsg( 3, "vout: DirectXCloseDisplay display" );
 914         IDirectDraw2_Release( p_vout->p_sys->p_display );
 915         p_vout->p_sys->p_display = NULL;
 916     }
 917 }
 918
 919 /*****************************************************************************
 920  * DirectXCloseSurface: close the YUV overlay or RGB surface.
 921  *****************************************************************************
 922  * This function returns all resources allocated for the surface.
 923  *****************************************************************************/
 924 static void DirectXCloseSurface( vout_thread_t *p_vout,
 925                                  LPDIRECTDRAWSURFACE3 p_surface )
 926 {
 927     intf_WarnMsg( 3, "vout: DirectXCloseSurface" );
 928     if( p_surface != NULL )
 929     {
 930         IDirectDraw2_Release( p_surface );
 931     }
 932 }
 933
 934 /*****************************************************************************
 935  * NewPictureVec: allocate a vector of identical pictures
 936  *****************************************************************************
 937  * Returns 0 on success, -1 otherwise
 938  *****************************************************************************/
 939 static int NewPictureVec( vout_thread_t *p_vout, picture_t *p_pic,
 940                           int i_num_pics )
 941 {
 942     int i;
 943     LPDIRECTDRAWSURFACE3 p_surface;
 944
 945 #if 0
 946     /* We couldn't use an YUV overlay so we need to indicate to video_output
 947      * which format we are falling back to */
 948     switch( )
 949     {
 950         case 8: /* FIXME: set the palette */
 951             p_vout->output.i_chroma = FOURCC_RGB2; break;
 952         case 15:
 953             p_vout->output.i_chroma = FOURCC_RV15; break;
 954         case 16:
 955             p_vout->output.i_chroma = FOURCC_RV16; break;
 956         case 24:
 957             p_vout->output.i_chroma = FOURCC_RV24; break;
 958         case 32:
 959             p_vout->output.i_chroma = FOURCC_RV32; break;
 960         default:
 961             intf_ErrMsg( "vout error: unknown screen depth" );
 962             return( 0 );
 963     }
 964 #endif
 965
 966     intf_WarnMsg( 3, "vout: NewPictureVec" );
 967
 968     I_OUTPUTPICTURES = 0;
 969
 970     /* chroma asked for */
 971     p_vout->output.i_chroma = p_vout->render.i_chroma;
 972
 973     /* hack */
 974 #if 1
 975     if( p_vout->render.i_chroma == FOURCC_I420 )
 976         p_vout->output.i_chroma = FOURCC_YV12;
 977 #endif
 978
 979     /* First we try to create an overlay surface.
 980      * It looks like with most hardware it's not possible to create several
 981      * overlay surfaces, and even if it was I bet it would be slower anyway to
 982      * use them as direct buffers because they usually reside in video memory
 983      * which is quite slow.
 984      * So the overlay surface (with a back-buffer) that we create won't be used
 985      * to decode directly into it but instead picture buffers in system memory
 986      * will be blitted to it. */
 987     if( p_vout->p_sys->b_using_overlay )
 988     {
 989         if( DirectXCreateSurface( p_vout, &p_surface, p_vout->output.i_chroma,
 990                                   p_vout->p_sys->b_using_overlay ) )
 991         {
 992             DDSCAPS dds_caps;
 993
 994             /* Allocate internal structure */
 995             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
 996             if( p_pic[0].p_sys == NULL )
 997             {
 998                 DirectXCloseSurface( p_vout, p_surface );
 999                 return -1;
1000             }
1001
1002             /* set front buffer */
1003             p_pic[0].p_sys->p_front_surface = p_surface;
1004
1005             /* Get the back buffer */
1006             memset( &dds_caps, 0, sizeof( DDSCAPS ));
1007             dds_caps.dwCaps = DDSCAPS_BACKBUFFER;
1008             if( DD_OK != IDirectDrawSurface3_GetAttachedSurface(
1009                                                 p_surface, &dds_caps,
1010                                                 &p_pic[0].p_sys->p_surface ) )
1011             {
1012                 intf_WarnMsg( 3, "vout: NewPictureVec couldn't get "
1013                               "back buffer" );
1014                 /* front buffer is the same as back buffer */
1015                 p_pic[0].p_sys->p_surface = p_surface;
1016             }
1017
1018
1019             p_vout->p_sys->p_current_surface= p_pic[0].p_sys->p_front_surface;
1020             DirectXUpdateOverlay( p_vout );
1021             I_OUTPUTPICTURES = 1;
1022         }
1023         else p_vout->p_sys->b_using_overlay = 0;
1024     }
1025
1026     /* As we can't have overlays, we'll try to create plain RBG surfaces in
1027      * system memory. These surfaces will then be blitted onto the primary
1028      * surface (display) so they can be displayed */
1029     if( !p_vout->p_sys->b_using_overlay )
1030     {
1031         /* FixMe */
1032         p_vout->output.i_chroma = FOURCC_RV16;
1033         p_vout->output.i_rmask  = 0x001f;
1034         p_vout->output.i_gmask  = 0x03e0;
1035         p_vout->output.i_bmask  = 0x7c00;
1036
1037         for( i = 0; i < i_num_pics; i++ )
1038         {
1039             if( DirectXCreateSurface( p_vout, &p_surface,
1040                                       p_vout->output.i_chroma,
1041                                       p_vout->p_sys->b_using_overlay ) )
1042             {
1043                 /* Allocate internal structure */
1044                 p_pic[i].p_sys = malloc( sizeof( picture_sys_t ) );
1045                 if( p_pic[i].p_sys == NULL )
1046                 {
1047                     DirectXCloseSurface( p_vout, p_surface );
1048                     FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1049                     I_OUTPUTPICTURES = 0;
1050                     return -1;
1051                 }
1052                 p_pic[i].p_sys->p_surface = p_surface;
1053                 p_pic[i].p_sys->p_front_surface = NULL;
1054                 I_OUTPUTPICTURES++;
1055
1056             }
1057             else break;
1058         }
1059     }
1060
1061
1062     /* Now that we've got all our direct-buffers, we can finish filling in the
1063      * picture_t structures */
1064     for( i = 0; i < I_OUTPUTPICTURES; i++ )
1065     {
1066         p_pic[i].i_status = DESTROYED_PICTURE;
1067         p_pic[i].i_type   = DIRECT_PICTURE;
1068         PP_OUTPUTPICTURE[i] = &p_pic[i];
1069
1070         if( !DirectXGetSurfaceDesc( &p_pic[i] ) )
1071         {
1072             /* AAARRGG */
1073             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1074             I_OUTPUTPICTURES = 0;
1075             return -1;
1076         }
1077
1078         if( !UpdatePictureStruct(p_vout, &p_pic[i], p_vout->output.i_chroma) )
1079         {
1080
1081             /* Unknown chroma, tell the guy to get lost */
1082             intf_ErrMsg( "vout error: never heard of chroma 0x%.8x (%4.4s)",
1083                          p_vout->output.i_chroma,
1084                          (char*)&p_vout->output.i_chroma );
1085             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1086             I_OUTPUTPICTURES = 0;
1087             return -1;
1088         }
1089     }
1090
1091     intf_WarnMsg( 3, "vout: End NewPictureVec");
1092     return 0;
1093 }
1094
1095 /*****************************************************************************
1096  * FreePicture: destroy a picture vector allocated with NewPictureVec
1097  *****************************************************************************
1098  *
1099  *****************************************************************************/
1100 static void FreePictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1101                             int i_num_pics )
1102 {
1103     int i;
1104
1105     for( i = 0; i < i_num_pics; i++ )
1106     {
1107 #if 0
1108         if( p_pic->p_sys->p_front_surface &&
1109             ( p_pic->p_sys->p_surface != p_pic->p_sys->p_front_surface ) )
1110             DirectXCloseSurface( p_vout, p_pic[i].p_sys->p_front_surface );
1111 #endif
1112
1113         DirectXCloseSurface( p_vout, p_pic[i].p_sys->p_surface );
1114
1115         for( i = 0; i < i_num_pics; i++ )
1116         {
1117             free( p_pic[i].p_sys );
1118         }
1119     }
1120 }
1121
1122 /*****************************************************************************
1123  * UpdatePictureStruct: updates the internal data in the picture_t structure
1124  *****************************************************************************
1125  * This will setup stuff for use by the video_output thread
1126  *****************************************************************************/
1127 static int UpdatePictureStruct( vout_thread_t *p_vout, picture_t *p_pic,
1128                                 int i_chroma )
1129 {
1130
1131     switch( p_vout->output.i_chroma )
1132     {
1133
1134         case FOURCC_YV12:
1135
1136             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1137             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1138             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1139             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
1140             p_pic->p[Y_PLANE].b_margin = 0;
1141
1142             p_pic->V_PIXELS =  p_pic->Y_PIXELS
1143               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1144             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1145             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1146             p_pic->p[V_PLANE].i_pixel_bytes = 1;
1147             p_pic->p[V_PLANE].b_margin = 0;
1148
1149             p_pic->U_PIXELS = p_pic->V_PIXELS
1150               + p_pic->p[V_PLANE].i_lines * p_pic->p[V_PLANE].i_pitch;
1151             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1152             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1153             p_pic->p[U_PLANE].i_pixel_bytes = 1;
1154             p_pic->p[U_PLANE].b_margin = 0;
1155
1156             p_pic->i_planes = 3;
1157             break;
1158
1159         case FOURCC_RV16:
1160
1161             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1162             p_pic->p->i_lines = p_vout->output.i_height;
1163             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1164             p_pic->p->i_pixel_bytes = 2;
1165             p_pic->p->b_margin = 0;
1166
1167             p_pic->i_planes = 1;
1168             break;
1169
1170         case FOURCC_RV15:
1171
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             p_pic->p->i_pixel_bytes = 2;
1176             p_pic->p->b_margin = 0;
1177
1178             p_pic->i_planes = 1;
1179             break;
1180
1181         case FOURCC_I420:
1182
1183             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1184             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1185             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1186             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
1187             p_pic->p[Y_PLANE].b_margin = 0;
1188
1189             p_pic->U_PIXELS = p_pic->Y_PIXELS
1190               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1191             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1192             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1193             p_pic->p[U_PLANE].i_pixel_bytes = 1;
1194             p_pic->p[U_PLANE].b_margin = 0;
1195
1196             p_pic->V_PIXELS = p_pic->U_PIXELS
1197               + p_pic->p[U_PLANE].i_lines * p_pic->p[U_PLANE].i_pitch;
1198             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1199             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1200             p_pic->p[V_PLANE].i_pixel_bytes = 1;
1201             p_pic->p[V_PLANE].b_margin = 0;
1202
1203             p_pic->i_planes = 3;
1204             break;
1205
1206 #if 0
1207         case FOURCC_Y211:
1208
1209             p_pic->p->p_pixels = p_pic->p_sys->p_image->data
1210                                   + p_pic->p_sys->p_image->offsets[0];
1211             p_pic->p->i_lines = p_vout->output.i_height;
1212             /* XXX: this just looks so plain wrong... check it out ! */
1213             p_pic->p->i_pitch = p_pic->p_sys->p_image->pitches[0] / 4;
1214             p_pic->p->i_pixel_bytes = 4;
1215             p_pic->p->b_margin = 0;
1216
1217             p_pic->i_planes = 1;
1218             break;
1219
1220         case FOURCC_YUY2:
1221         case FOURCC_UYVY:
1222
1223             p_pic->p->p_pixels = p_pic->p_sys->p_image->data
1224                                   + p_pic->p_sys->p_image->offsets[0];
1225             p_pic->p->i_lines = p_vout->output.i_height;
1226             p_pic->p->i_pitch = p_pic->p_sys->p_image->pitches[0];
1227             p_pic->p->i_pixel_bytes = 4;
1228             p_pic->p->b_margin = 0;
1229
1230             p_pic->i_planes = 1;
1231             break;
1232 #endif
1233
1234         default:
1235             /* Not supported */
1236             return 0;
1237
1238     }
1239
1240     return 1;
1241 }
1242
1243 /*****************************************************************************
1244  * DirectXGetDDrawCaps: Probe the capabilities of the hardware
1245  *****************************************************************************
1246  * It is nice to know which features are supported by the hardware so we can
1247  * find ways to optimize our rendering.
1248  *****************************************************************************/
1249 static void DirectXGetDDrawCaps( vout_thread_t *p_vout )
1250 {
1251     DDCAPS ddcaps;
1252     HRESULT dxresult;
1253
1254     /* This is just an indication of whether or not we'll support overlay,
1255      * but with this test we don't know if we support YUV overlay */
1256     memset( &ddcaps, 0, sizeof( DDCAPS ));
1257     ddcaps.dwSize = sizeof(DDCAPS);
1258     dxresult = IDirectDraw2_GetCaps( p_vout->p_sys->p_ddobject,
1259                                      &ddcaps, NULL );
1260     if(dxresult != DD_OK )
1261     {
1262         intf_WarnMsg( 3,"vout error: can't get caps." );
1263     }
1264     else
1265     {
1266         BOOL bHasOverlay, bHasOverlayFourCC, bCanClipOverlay,
1267              bHasColorKey, bCanStretch;
1268
1269         /* Determine if the hardware supports overlay surfaces */
1270         bHasOverlay = ((ddcaps.dwCaps & DDCAPS_OVERLAY) ==
1271                        DDCAPS_OVERLAY) ? TRUE : FALSE;
1272         /* Determine if the hardware supports overlay surfaces */
1273         bHasOverlayFourCC = ((ddcaps.dwCaps & DDCAPS_OVERLAYFOURCC) ==
1274                        DDCAPS_OVERLAYFOURCC) ? TRUE : FALSE;
1275         /* Determine if the hardware supports overlay surfaces */
1276         bCanClipOverlay = ((ddcaps.dwCaps & DDCAPS_OVERLAYCANTCLIP) ==
1277                        0 ) ? TRUE : FALSE;
1278         /* Determine if the hardware supports colorkeying */
1279         bHasColorKey = ((ddcaps.dwCaps & DDCAPS_COLORKEY) ==
1280                         DDCAPS_COLORKEY) ? TRUE : FALSE;
1281         /* Determine if the hardware supports scaling of the overlay surface */
1282         bCanStretch = ((ddcaps.dwCaps & DDCAPS_OVERLAYSTRETCH) ==
1283                        DDCAPS_OVERLAYSTRETCH) ? TRUE : FALSE;
1284         intf_WarnMsg( 3, "vout: DirectDraw Capabilities:" );
1285         intf_WarnMsg( 3, "       overlay=%i yuvoverlay=%i can_clip_overlay=%i "
1286                          "colorkey=%i stretch=%i",
1287                       bHasOverlay, bHasOverlayFourCC, bCanClipOverlay,
1288                       bHasColorKey, bCanStretch );
1289
1290         /* Overlay clipping support is interesting for us as it means we can
1291          * get rid of the colorkey alltogether */
1292         p_vout->p_sys->b_caps_overlay_clipping = bCanClipOverlay;
1293
1294     }
1295 }
1296
1297 /*****************************************************************************
1298  * DirectXGetSurfaceDesc: Get some more information about the surface
1299  *****************************************************************************
1300  * This function get and stores the surface descriptor which among things
1301  * has the pointer to the picture data.
1302  *****************************************************************************/
1303 static int DirectXGetSurfaceDesc( picture_t *p_pic )
1304 {
1305     HRESULT         dxresult;
1306
1307     /* Lock the surface to get a valid pointer to the picture buffer */
1308     memset( &p_pic->p_sys->ddsd, 0, sizeof( DDSURFACEDESC ));
1309     p_pic->p_sys->ddsd.dwSize = sizeof(DDSURFACEDESC);
1310     dxresult = IDirectDrawSurface3_Lock( p_pic->p_sys->p_surface,
1311                                          NULL, &p_pic->p_sys->ddsd,
1312                                          DDLOCK_NOSYSLOCK,
1313                                          NULL );
1314     if ( dxresult == DDERR_SURFACELOST )
1315     {
1316         /* Your surface can be lost so be sure
1317          * to check this and restore it if needed */
1318         dxresult = IDirectDrawSurface3_Restore( p_pic->p_sys->p_surface );
1319         dxresult = IDirectDrawSurface3_Lock( p_pic->p_sys->p_surface, NULL,
1320                                              &p_pic->p_sys->ddsd,
1321                                              DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1322                                              NULL);
1323     }
1324     if( dxresult != DD_OK )
1325     {
1326         intf_ErrMsg( "vout: DirectXGetSurfaceDesc can't lock surface" );
1327         return 0;
1328     }
1329
1330     /* Unlock the Surface */
1331     dxresult = IDirectDrawSurface3_Unlock( p_pic->p_sys->p_surface, NULL );
1332
1333     return 1;
1334 }