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 1.35 2002/05/18 22:41:43 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 <videolan/vlc.h>
  42
  43 #include <ddraw.h>
  44
  45 #include "netutils.h"
  46
  47 #include "video.h"
  48 #include "video_output.h"
  49
  50 #include "interface.h"
  51
  52 #include "vout_directx.h"
  53
  54 /*****************************************************************************
  55  * DirectDraw GUIDs.
  56  * Defining them here allows us to get rid of the dxguid library during
  57  * the linking stage.
  58  *****************************************************************************/
  59 #include <initguid.h>
  60 DEFINE_GUID( IID_IDirectDraw2, 0xB3A6F3E0,0x2B43,0x11CF,0xA2,0xDE,0x00,0xAA,0x00,0xB9,0x33,0x56 );
  61 DEFINE_GUID( IID_IDirectDrawSurface3, 0xDA044E00,0x69B2,0x11D0,0xA1,0xD5,0x00,0xAA,0x00,0xB8,0xDF,0xBB );
  62
  63 /*****************************************************************************
  64  * Local prototypes.
  65  *****************************************************************************/
  66 static int  vout_Create    ( vout_thread_t * );
  67 static void vout_Destroy   ( vout_thread_t * );
  68 static int  vout_Init      ( vout_thread_t * );
  69 static void vout_End       ( vout_thread_t * );
  70 static int  vout_Manage    ( vout_thread_t * );
  71 static void vout_Render    ( vout_thread_t *, picture_t * );
  72 static void vout_Display   ( vout_thread_t *, picture_t * );
  73
  74 static int  NewPictureVec  ( vout_thread_t *, picture_t *, int );
  75 static void FreePictureVec ( vout_thread_t *, picture_t *, int );
  76 static int  UpdatePictureStruct( vout_thread_t *, picture_t *, int );
  77
  78 static int  DirectXInitDDraw      ( vout_thread_t *p_vout );
  79 static void DirectXCloseDDraw     ( vout_thread_t *p_vout );
  80 static int  DirectXCreateDisplay  ( vout_thread_t *p_vout );
  81 static void DirectXCloseDisplay   ( vout_thread_t *p_vout );
  82 static int  DirectXCreateSurface  ( vout_thread_t *p_vout,
  83                                     LPDIRECTDRAWSURFACE3 *, int, int, int );
  84 static void DirectXCloseSurface   ( vout_thread_t *p_vout,
  85                                     LPDIRECTDRAWSURFACE3 );
  86 static int  DirectXCreateClipper  ( vout_thread_t *p_vout );
  87 static void DirectXGetDDrawCaps   ( vout_thread_t *p_vout );
  88 static int  DirectXGetSurfaceDesc ( picture_t *p_pic );
  89
  90 /*****************************************************************************
  91  * Functions exported as capabilities. They are declared as static so that
  92  * we don't pollute the namespace too much.
  93  *****************************************************************************/
  94 void _M( vout_getfunctions )( function_list_t * p_function_list )
  95 {
  96     p_function_list->functions.vout.pf_create     = vout_Create;
  97     p_function_list->functions.vout.pf_init       = vout_Init;
  98     p_function_list->functions.vout.pf_end        = vout_End;
  99     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 100     p_function_list->functions.vout.pf_manage     = vout_Manage;
 101     p_function_list->functions.vout.pf_render     = vout_Render;
 102     p_function_list->functions.vout.pf_display    = vout_Display;
 103 }
 104
 105 /*****************************************************************************
 106  * vout_Create: allocate DirectX video thread output method
 107  *****************************************************************************
 108  * This function allocates and initialize the DirectX vout method.
 109  *****************************************************************************/
 110 static int vout_Create( vout_thread_t *p_vout )
 111 {
 112     /* Allocate structure */
 113     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 114     if( p_vout->p_sys == NULL )
 115     {
 116         intf_ErrMsg( "vout error: can't create p_sys (%s)", strerror(ENOMEM) );
 117         return( 1 );
 118     }
 119
 120     /* Initialisations */
 121     p_vout->p_sys->p_ddobject = NULL;
 122     p_vout->p_sys->p_display = NULL;
 123     p_vout->p_sys->p_current_surface = NULL;
 124     p_vout->p_sys->p_clipper = NULL;
 125     p_vout->p_sys->hbrush = NULL;
 126     p_vout->p_sys->hwnd = NULL;
 127     p_vout->p_sys->i_changes = 0;
 128     p_vout->p_sys->b_event_thread_die = 0;
 129     p_vout->p_sys->b_caps_overlay_clipping = 0;
 130     SetRectEmpty( &p_vout->p_sys->rect_display );
 131     p_vout->p_sys->b_using_overlay = !config_GetIntVariable( "nooverlay" );
 132     p_vout->p_sys->b_use_sysmem = config_GetIntVariable( "directx-use-sysmem");
 133     p_vout->p_sys->b_hw_yuv = !config_GetIntVariable( "no-directx-hw-yuv" );
 134
 135     p_vout->p_sys->b_cursor_hidden = 0;
 136     p_vout->p_sys->i_lastmoved = mdate();
 137
 138     /* Set main window's size */
 139     p_vout->p_sys->i_window_width = p_vout->i_window_width;
 140     p_vout->p_sys->i_window_height = p_vout->i_window_height;
 141
 142     /* Set locks and condition variables */
 143     vlc_mutex_init( &p_vout->p_sys->event_thread_lock );
 144     vlc_cond_init( &p_vout->p_sys->event_thread_wait );
 145     p_vout->p_sys->i_event_thread_status = THREAD_CREATE;
 146
 147     /* Create the DirectXEventThread, this thread is created by us to isolate
 148      * the Win32 PeekMessage function calls. We want to do this because
 149      * Windows can stay blocked inside this call for a long time, and when
 150      * this happens it thus blocks vlc's video_output thread.
 151      * DirectXEventThread will take care of the creation of the video
 152      * window (because PeekMessage has to be called from the same thread which
 153      * created the window). */
 154     intf_WarnMsg( 3, "vout: vout_Create creating DirectXEventThread" );
 155     if( vlc_thread_create( &p_vout->p_sys->event_thread_id,
 156                            "DirectX Events Thread",
 157                            (void *) DirectXEventThread, (void *) p_vout) )
 158     {
 159         intf_ErrMsg( "vout error: can't create DirectXEventThread" );
 160         intf_ErrMsg("vout error: %s", strerror(ENOMEM));
 161         free( p_vout->p_sys );
 162         return( 1 );
 163     }
 164
 165     /* We need to wait for the actual creation of the thread and window */
 166     vlc_mutex_lock( &p_vout->p_sys->event_thread_lock );
 167     if( p_vout->p_sys->i_event_thread_status == THREAD_CREATE )
 168     {
 169         vlc_cond_wait ( &p_vout->p_sys->event_thread_wait,
 170                         &p_vout->p_sys->event_thread_lock );
 171     }
 172     vlc_mutex_unlock( &p_vout->p_sys->event_thread_lock );
 173     if( p_vout->p_sys->i_event_thread_status != THREAD_READY )
 174     {
 175         intf_ErrMsg( "vout error: DirectXEventThread failed" );
 176         free( p_vout->p_sys );
 177         return( 1 );
 178     }
 179
 180     intf_WarnMsg( 3, "vout: vout_Create DirectXEventThread running" );
 181
 182     /* Initialise DirectDraw */
 183     if( DirectXInitDDraw( p_vout ) )
 184     {
 185         intf_ErrMsg( "vout error: can't initialise DirectDraw" );
 186         vout_Destroy( p_vout );
 187         return ( 1 );
 188     }
 189
 190     /* Create the directx display */
 191     if( DirectXCreateDisplay( p_vout ) )
 192     {
 193         intf_ErrMsg( "vout error: can't initialise DirectDraw" );
 194         DirectXCloseDDraw( p_vout );
 195         vout_Destroy( p_vout );
 196         return ( 1 );
 197     }
 198
 199     return( 0 );
 200 }
 201
 202 /*****************************************************************************
 203  * vout_Init: initialize DirectX video thread output method
 204  *****************************************************************************
 205  * This function create the directx surfaces needed by the output thread.
 206  * It is called at the beginning of the thread.
 207  *****************************************************************************/
 208 static int vout_Init( vout_thread_t *p_vout )
 209 {
 210
 211     /* Initialize the output structure.
 212      * Since DirectDraw can do rescaling for us, stick to the default
 213      * coordinates and aspect. */
 214     p_vout->output.i_width  = p_vout->render.i_width;
 215     p_vout->output.i_height = p_vout->render.i_height;
 216     p_vout->output.i_aspect = p_vout->render.i_aspect;
 217
 218 #define MAX_DIRECTBUFFERS 1
 219     /* Right now we use only 1 directbuffer because we don't want the
 220      * video decoder to decode directly into direct buffers as they are
 221      * created into video memory and video memory is _really_ slow */
 222
 223     NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 224
 225     /* Change the window title bar text */
 226     if( p_vout->p_sys->b_using_overlay )
 227         SetWindowText( p_vout->p_sys->hwnd,
 228                        "VLC DirectX (using hardware overlay)" );
 229     else if( p_vout->p_sys->b_hw_yuv )
 230         SetWindowText( p_vout->p_sys->hwnd,
 231                        "VLC DirectX (using hardware YUV->RGB conversion)" );
 232
 233     return( 0 );
 234 }
 235
 236 /*****************************************************************************
 237  * vout_End: terminate Sys video thread output method
 238  *****************************************************************************
 239  * Terminate an output method created by vout_Create.
 240  * It is called at the end of the thread.
 241  *****************************************************************************/
 242 static void vout_End( vout_thread_t *p_vout )
 243 {
 244     FreePictureVec( p_vout, p_vout->p_picture, I_OUTPUTPICTURES );
 245     return;
 246 }
 247
 248 /*****************************************************************************
 249  * vout_Destroy: destroy Sys video thread output method
 250  *****************************************************************************
 251  * Terminate an output method created by vout_Create
 252  *****************************************************************************/
 253 static void vout_Destroy( vout_thread_t *p_vout )
 254 {
 255     intf_WarnMsg( 3, "vout: vout_Destroy" );
 256     DirectXCloseDisplay( p_vout );
 257     DirectXCloseDDraw( p_vout );
 258
 259     /* Kill DirectXEventThread */
 260     vlc_mutex_lock( &p_vout->p_sys->event_thread_lock );
 261     p_vout->p_sys->b_event_thread_die = 1;
 262
 263     /* we need to be sure DirectXEventThread won't stay stuck in GetMessage,
 264      * so we send a fake message */
 265     if( p_vout->p_sys->hwnd )
 266         PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0);
 267
 268     vlc_mutex_unlock( &p_vout->p_sys->event_thread_lock );
 269     vlc_thread_join( p_vout->p_sys->event_thread_id );
 270
 271     if( p_vout->p_sys != NULL )
 272     {
 273         free( p_vout->p_sys );
 274         p_vout->p_sys = NULL;
 275     }
 276 }
 277
 278 /*****************************************************************************
 279  * vout_Manage: handle Sys events
 280  *****************************************************************************
 281  * This function should be called regularly by the video output thread.
 282  * It returns a non null value if an error occured.
 283  *****************************************************************************/
 284 static int vout_Manage( vout_thread_t *p_vout )
 285 {
 286     WINDOWPLACEMENT window_placement;
 287
 288     /* We used to call the Win32 PeekMessage function here to read the window
 289      * messages. But since window can stay blocked into this function for a
 290      * long time (for example when you move your window on the screen), I
 291      * decided to isolate PeekMessage in another thread. */
 292
 293     /*
 294      * Scale Change
 295      */
 296     if( p_vout->i_changes & VOUT_SCALE_CHANGE
 297         || p_vout->p_sys->i_changes & VOUT_SCALE_CHANGE)
 298     {
 299         intf_WarnMsg( 3, "vout: vout_Manage Scale Change" );
 300         if( !p_vout->p_sys->b_using_overlay )
 301             InvalidateRect( p_vout->p_sys->hwnd, NULL, TRUE );
 302         else
 303             DirectXUpdateOverlay( p_vout );
 304         p_vout->i_changes &= ~VOUT_SCALE_CHANGE;
 305         p_vout->p_sys->i_changes &= ~VOUT_SCALE_CHANGE;
 306     }
 307
 308     /*
 309      * Size Change
 310      */
 311     if( p_vout->i_changes & VOUT_SIZE_CHANGE
 312         || p_vout->p_sys->i_changes & VOUT_SIZE_CHANGE )
 313     {
 314         intf_WarnMsg( 3, "vout: vout_Manage Size Change" );
 315         if( !p_vout->p_sys->b_using_overlay )
 316             InvalidateRect( p_vout->p_sys->hwnd, NULL, TRUE );
 317         else
 318             DirectXUpdateOverlay( p_vout );
 319         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 320         p_vout->p_sys->i_changes &= ~VOUT_SIZE_CHANGE;
 321     }
 322
 323     /*
 324      * Fullscreen change
 325      */
 326     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
 327         || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
 328     {
 329         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 330
 331         /* We need to switch between Maximized and Normal sized window */
 332         window_placement.length = sizeof(WINDOWPLACEMENT);
 333         GetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 334         if( p_vout->b_fullscreen )
 335         {
 336             /* Maximized window */
 337             window_placement.showCmd = SW_SHOWMAXIMIZED;
 338             /* Change window style, no borders and no title bar */
 339             SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE, 0 );
 340
 341         }
 342         else
 343         {
 344             /* Normal window */
 345             window_placement.showCmd = SW_SHOWNORMAL;
 346             /* Change window style, borders and title bar */
 347             SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE,
 348                            WS_OVERLAPPEDWINDOW | WS_SIZEBOX | WS_VISIBLE );
 349         }
 350
 351         SetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 352
 353         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 354         p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 355     }
 356
 357     /*
 358      * Pointer change
 359      */
 360     if( (!p_vout->p_sys->b_cursor_hidden) &&
 361         ( (mdate() - p_vout->p_sys->i_lastmoved) > 5000000 ) )
 362     {
 363         /* Hide the mouse automatically */
 364         p_vout->p_sys->b_cursor_hidden = 1;
 365         PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
 366     }
 367
 368     /* Check if the event thread is still running */
 369     if( p_vout->p_sys->b_event_thread_die )
 370         return 1; /* exit */
 371
 372     return( 0 );
 373 }
 374
 375 /*****************************************************************************
 376  * vout_Render: render previously calculated output
 377  *****************************************************************************/
 378 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
 379 {
 380     ;
 381 }
 382
 383 /*****************************************************************************
 384  * vout_Display: displays previously rendered output
 385  *****************************************************************************
 386  * This function sends the currently rendered image to the display, wait until
 387  * it is displayed and switch the two rendering buffers, preparing next frame.
 388  *****************************************************************************/
 389 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
 390 {
 391     HRESULT dxresult;
 392
 393     if( (p_vout->p_sys->p_display == NULL) )
 394     {
 395         intf_WarnMsg( 3, "vout error: vout_Display no display!!" );
 396         return;
 397     }
 398
 399     if( !p_vout->p_sys->b_using_overlay )
 400     {
 401         DDBLTFX  ddbltfx;
 402
 403         /* We ask for the "NOTEARING" option */
 404         memset( &ddbltfx, 0, sizeof(DDBLTFX) );
 405         ddbltfx.dwSize = sizeof(DDBLTFX);
 406         ddbltfx.dwDDFX = DDBLTFX_NOTEARING;
 407
 408         /* Blit video surface to display */
 409         dxresult = IDirectDrawSurface3_Blt(p_vout->p_sys->p_display,
 410                                            &p_vout->p_sys->rect_dest_clipped,
 411                                            p_pic->p_sys->p_surface,
 412                                            &p_vout->p_sys->rect_src_clipped,
 413                                            DDBLT_ASYNC, &ddbltfx );
 414         if ( dxresult == DDERR_SURFACELOST )
 415         {
 416             /* Our surface can be lost so be sure
 417              * to check this and restore it if needed */
 418             IDirectDrawSurface3_Restore( p_vout->p_sys->p_display );
 419
 420             /* Now that the surface has been restored try to display again */
 421             dxresult = IDirectDrawSurface3_Blt(p_vout->p_sys->p_display,
 422                                            &p_vout->p_sys->rect_dest_clipped,
 423                                            p_pic->p_sys->p_surface,
 424                                            &p_vout->p_sys->rect_src_clipped,
 425                                            DDBLT_ASYNC, &ddbltfx );
 426         }
 427
 428         if( dxresult != DD_OK )
 429         {
 430             intf_WarnMsg( 3, "vout: could not Blit the surface" );
 431             return;
 432         }
 433
 434     }
 435     else /* using overlay */
 436     {
 437
 438         /* Flip the overlay buffers if we are using back buffers */
 439         if( p_pic->p_sys->p_front_surface == p_pic->p_sys->p_surface )
 440             return;
 441
 442         dxresult = IDirectDrawSurface3_Flip( p_pic->p_sys->p_front_surface,
 443                                              NULL, DDFLIP_WAIT );
 444         if ( dxresult == DDERR_SURFACELOST )
 445         {
 446             /* Our surface can be lost so be sure
 447              * to check this and restore it if needed */
 448             IDirectDrawSurface3_Restore( p_vout->p_sys->p_display );
 449             IDirectDrawSurface3_Restore( p_pic->p_sys->p_front_surface );
 450
 451             /* Now that the surface has been restored try to display again */
 452             dxresult = IDirectDrawSurface3_Flip( p_pic->p_sys->p_front_surface,
 453                                                  NULL, DDFLIP_WAIT );
 454             DirectXUpdateOverlay( p_vout );
 455         }
 456
 457         if( dxresult != DD_OK )
 458             intf_WarnMsg( 8, "vout: couldn't flip overlay surface" );
 459
 460
 461         if( !DirectXGetSurfaceDesc( p_pic ) )
 462         {
 463             /* AAARRGG */
 464             intf_ErrMsg( "vout error: vout_Display cannot get surface desc" );
 465             return;
 466         }
 467
 468         if( !UpdatePictureStruct( p_vout, p_pic, p_vout->output.i_chroma ) )
 469         {
 470             /* AAARRGG */
 471             intf_ErrMsg( "vout error: vout_Display unvalid pic chroma" );
 472             return;
 473         }
 474
 475         /* set currently displayed pic */
 476         p_vout->p_sys->p_current_surface = p_pic->p_sys->p_front_surface;
 477     }
 478
 479 }
 480
 481
 482 /* following functions are local */
 483
 484 /*****************************************************************************
 485  * DirectXInitDDraw: Takes care of all the DirectDraw initialisations
 486  *****************************************************************************
 487  * This function initialise and allocate resources for DirectDraw.
 488  *****************************************************************************/
 489 static int DirectXInitDDraw( vout_thread_t *p_vout )
 490 {
 491     HRESULT    dxresult;
 492     HRESULT    (WINAPI *OurDirectDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *);
 493     LPDIRECTDRAW  p_ddobject;
 494
 495     intf_WarnMsg( 3, "vout: DirectXInitDDraw" );
 496
 497     /* load direct draw DLL */
 498     p_vout->p_sys->hddraw_dll = LoadLibrary("DDRAW.DLL");
 499     if( p_vout->p_sys->hddraw_dll == NULL )
 500     {
 501         intf_WarnMsg( 3, "vout: DirectXInitDDraw failed loading ddraw.dll" );
 502         return( 1 );
 503     }
 504
 505     OurDirectDrawCreate =
 506       (void *)GetProcAddress(p_vout->p_sys->hddraw_dll, "DirectDrawCreate");
 507     if ( OurDirectDrawCreate == NULL )
 508     {
 509         intf_ErrMsg( "vout error: DirectXInitDDraw failed GetProcAddress" );
 510         FreeLibrary( p_vout->p_sys->hddraw_dll );
 511         p_vout->p_sys->hddraw_dll = NULL;
 512         return( 1 );
 513     }
 514
 515     /* Initialize DirectDraw now */
 516     dxresult = OurDirectDrawCreate( NULL, &p_ddobject, NULL );
 517     if( dxresult != DD_OK )
 518     {
 519         intf_ErrMsg( "vout error: DirectXInitDDraw can't initialize DDraw" );
 520         p_vout->p_sys->p_ddobject = NULL;
 521         FreeLibrary( p_vout->p_sys->hddraw_dll );
 522         p_vout->p_sys->hddraw_dll = NULL;
 523         return( 1 );
 524     }
 525
 526     /* Set DirectDraw Cooperative level, ie what control we want over Windows
 527      * display */
 528     dxresult = IDirectDraw_SetCooperativeLevel( p_ddobject,
 529                                            p_vout->p_sys->hwnd, DDSCL_NORMAL );
 530     if( dxresult != DD_OK )
 531     {
 532         intf_ErrMsg( "vout error: can't set direct draw cooperative level." );
 533         IDirectDraw_Release( p_ddobject );
 534         p_vout->p_sys->p_ddobject = NULL;
 535         FreeLibrary( p_vout->p_sys->hddraw_dll );
 536         p_vout->p_sys->hddraw_dll = NULL;
 537         return( 1 );
 538     }
 539
 540     /* Get the IDirectDraw2 interface */
 541     dxresult = IDirectDraw_QueryInterface( p_ddobject, &IID_IDirectDraw2,
 542                                         (LPVOID *)&p_vout->p_sys->p_ddobject );
 543     if( dxresult != DD_OK )
 544     {
 545         intf_ErrMsg( "vout error: can't get IDirectDraw2 interface." );
 546         IDirectDraw_Release( p_ddobject );
 547         p_vout->p_sys->p_ddobject = NULL;
 548         FreeLibrary( p_vout->p_sys->hddraw_dll );
 549         p_vout->p_sys->hddraw_dll = NULL;
 550         return( 1 );
 551     }
 552     else
 553     {
 554         /* Release the unused interface */
 555         IDirectDraw_Release( p_ddobject );
 556     }
 557
 558     /* Probe the capabilities of the hardware */
 559     DirectXGetDDrawCaps( p_vout );
 560
 561     intf_WarnMsg( 3, "vout: End DirectXInitDDraw" );
 562     return( 0 );
 563 }
 564
 565 /*****************************************************************************
 566  * DirectXCreateDisplay: create the DirectDraw display.
 567  *****************************************************************************
 568  * Create and initialize display according to preferences specified in the vout
 569  * thread fields.
 570  *****************************************************************************/
 571 static int DirectXCreateDisplay( vout_thread_t *p_vout )
 572 {
 573     HRESULT              dxresult;
 574     DDSURFACEDESC        ddsd;
 575     LPDIRECTDRAWSURFACE  p_display;
 576     DDPIXELFORMAT   pixel_format;
 577
 578     intf_WarnMsg( 3, "vout: DirectXCreateDisplay" );
 579
 580     /* Now get the primary surface. This surface is what you actually see
 581      * on your screen */
 582     memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 583     ddsd.dwSize = sizeof(DDSURFACEDESC);
 584     ddsd.dwFlags = DDSD_CAPS;
 585     ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
 586
 587     dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 588                                            &ddsd,
 589                                            &p_display, NULL );
 590     if( dxresult != DD_OK )
 591     {
 592         intf_ErrMsg( "vout error: can't get direct draw primary surface." );
 593         p_vout->p_sys->p_display = NULL;
 594         return( 1 );
 595     }
 596
 597     dxresult = IDirectDrawSurface_QueryInterface( p_display,
 598                                          &IID_IDirectDrawSurface3,
 599                                          (LPVOID *)&p_vout->p_sys->p_display );
 600     if ( dxresult != DD_OK )
 601     {
 602         intf_ErrMsg( "vout error: can't get IDirectDrawSurface3 interface." );
 603         IDirectDrawSurface_Release( p_display );
 604         p_vout->p_sys->p_display = NULL;
 605         return( 1 );
 606     }
 607     else
 608     {
 609         /* Release the old interface */
 610         IDirectDrawSurface_Release( p_display );
 611     }
 612
 613
 614     /* The clipper will be used only in non-overlay mode */
 615     DirectXCreateClipper( p_vout );
 616
 617
 618 #if 1
 619     /* compute the colorkey pixel value from the RGB value we've got */
 620     memset( &pixel_format, 0, sizeof( DDPIXELFORMAT ));
 621     pixel_format.dwSize = sizeof( DDPIXELFORMAT );
 622     dxresult = IDirectDrawSurface3_GetPixelFormat( p_vout->p_sys->p_display,
 623                                                    &pixel_format );
 624     if( dxresult != DD_OK )
 625         intf_WarnMsg( 3, "vout: DirectXUpdateOverlay GetPixelFormat failed" );
 626     p_vout->p_sys->i_colorkey = (DWORD)((( p_vout->p_sys->i_rgb_colorkey
 627                                            * pixel_format.dwRBitMask) / 255)
 628                                         & pixel_format.dwRBitMask);
 629 #endif
 630
 631     return( 0 );
 632 }
 633
 634
 635 /*****************************************************************************
 636  * DirectXCreateClipper: Create a clipper that will be used when blitting the
 637  *                       RGB surface to the main display.
 638  *****************************************************************************
 639  * This clipper prevents us to modify by mistake anything on the screen
 640  * which doesn't belong to our window. For example when a part of our video
 641  * window is hidden by another window.
 642  *****************************************************************************/
 643 static int DirectXCreateClipper( vout_thread_t *p_vout )
 644 {
 645     HRESULT dxresult;
 646
 647     intf_WarnMsg( 3, "vout: DirectXCreateClipper" );
 648
 649     /* Create the clipper */
 650     dxresult = IDirectDraw2_CreateClipper( p_vout->p_sys->p_ddobject, 0,
 651                                            &p_vout->p_sys->p_clipper, NULL );
 652     if( dxresult != DD_OK )
 653     {
 654         intf_WarnMsg( 3, "vout: DirectXCreateClipper can't create clipper." );
 655         p_vout->p_sys->p_clipper = NULL;
 656         return( 1 );
 657     }
 658
 659     /* associate the clipper to the window */
 660     dxresult = IDirectDrawClipper_SetHWnd(p_vout->p_sys->p_clipper, 0,
 661                                           p_vout->p_sys->hwnd);
 662     if( dxresult != DD_OK )
 663     {
 664         intf_WarnMsg( 3,
 665             "vout: DirectXCreateClipper can't attach clipper to window." );
 666         IDirectDrawSurface_Release( p_vout->p_sys->p_clipper );
 667         p_vout->p_sys->p_clipper = NULL;
 668         return( 1 );
 669     }
 670
 671     /* associate the clipper with the surface */
 672     dxresult = IDirectDrawSurface_SetClipper(p_vout->p_sys->p_display,
 673                                              p_vout->p_sys->p_clipper);
 674     if( dxresult != DD_OK )
 675     {
 676         intf_WarnMsg( 3,
 677             "vout: DirectXCreateClipper can't attach clipper to surface." );
 678         IDirectDrawSurface_Release( p_vout->p_sys->p_clipper );
 679         p_vout->p_sys->p_clipper = NULL;
 680         return( 1 );
 681     }
 682
 683     return( 0 );
 684 }
 685
 686 /*****************************************************************************
 687  * DirectXCreateSurface: create an YUV overlay or RGB surface for the video.
 688  *****************************************************************************
 689  * The best method of display is with an YUV overlay because the YUV->RGB
 690  * conversion is done in hardware.
 691  * You can also create a plain RGB surface.
 692  * ( Maybe we could also try an RGB overlay surface, which could have hardware
 693  * scaling and which would also be faster in window mode because you don't
 694  * need to do any blitting to the main display...)
 695  *****************************************************************************/
 696 static int DirectXCreateSurface( vout_thread_t *p_vout,
 697                                  LPDIRECTDRAWSURFACE3 *pp_surface_final,
 698                                  int i_chroma, int b_overlay,
 699                                  int i_backbuffers )
 700 {
 701     HRESULT dxresult;
 702     LPDIRECTDRAWSURFACE p_surface;
 703     DDSURFACEDESC ddsd;
 704
 705     /* Create the video surface */
 706     if( b_overlay )
 707     {
 708         /* Now try to create the YUV overlay surface.
 709          * This overlay will be displayed on top of the primary surface.
 710          * A color key is used to determine whether or not the overlay will be
 711          * displayed, ie the overlay will be displayed in place of the primary
 712          * surface wherever the primary surface will have this color.
 713          * The video window has been created with a background of this color so
 714          * the overlay will be only displayed on top of this window */
 715
 716         memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 717         ddsd.dwSize = sizeof(DDSURFACEDESC);
 718         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
 719         ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
 720         ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
 721         ddsd.dwFlags = DDSD_CAPS |
 722                        DDSD_HEIGHT |
 723                        DDSD_WIDTH |
 724                        DDSD_PIXELFORMAT;
 725         ddsd.dwFlags |= (i_backbuffers ? DDSD_BACKBUFFERCOUNT : 0);
 726         ddsd.ddsCaps.dwCaps = DDSCAPS_OVERLAY |
 727                               DDSCAPS_VIDEOMEMORY;
 728         ddsd.ddsCaps.dwCaps |= (i_backbuffers ? DDSCAPS_COMPLEX | DDSCAPS_FLIP
 729                                 : 0 );
 730         ddsd.dwHeight = p_vout->render.i_height;
 731         ddsd.dwWidth = p_vout->render.i_width;
 732         ddsd.dwBackBufferCount = i_backbuffers;
 733
 734         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 735                                                &ddsd,
 736                                                &p_surface, NULL );
 737         if( dxresult != DD_OK )
 738         {
 739             *pp_surface_final = NULL;
 740             return 0;
 741         }
 742     }
 743
 744     if( !b_overlay )
 745     {
 746         boolean_t b_rgb_surface = ( i_chroma == FOURCC_RGB2 ) ||
 747             ( i_chroma == FOURCC_RV15 ) || ( i_chroma == FOURCC_RV16 ) ||
 748             ( i_chroma == FOURCC_RV24 ) || ( i_chroma == FOURCC_RV32 );
 749
 750         memset( &ddsd, 0, sizeof( DDSURFACEDESC ) );
 751         ddsd.dwSize = sizeof(DDSURFACEDESC);
 752         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
 753         ddsd.dwFlags = DDSD_HEIGHT |
 754                        DDSD_WIDTH |
 755                        DDSD_CAPS;
 756         ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
 757         ddsd.dwHeight = p_vout->render.i_height;
 758         ddsd.dwWidth = p_vout->render.i_width;
 759
 760         if( p_vout->p_sys->b_use_sysmem )
 761             ddsd.ddsCaps.dwCaps |= DDSCAPS_SYSTEMMEMORY;
 762         else
 763             ddsd.ddsCaps.dwCaps |= DDSCAPS_VIDEOMEMORY;
 764
 765         if( !b_rgb_surface )
 766         {
 767             ddsd.dwFlags |= DDSD_PIXELFORMAT;
 768             ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
 769             ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
 770         }
 771
 772         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 773                                                &ddsd,
 774                                                &p_surface, NULL );
 775         if( dxresult != DD_OK )
 776         {
 777             *pp_surface_final = NULL;
 778             return 0;
 779         }
 780     }
 781
 782     /* Now that the surface is created, try to get a newer DirectX interface */
 783     dxresult = IDirectDrawSurface_QueryInterface( p_surface,
 784                                      &IID_IDirectDrawSurface3,
 785                                      (LPVOID *)pp_surface_final );
 786     IDirectDrawSurface_Release( p_surface );    /* Release the old interface */
 787     if ( dxresult != DD_OK )
 788     {
 789         intf_ErrMsg( "vout error: can't get IDirectDrawSurface3 interface." );
 790         *pp_surface_final = NULL;
 791         return 0;
 792     }
 793
 794     return 1;
 795 }
 796
 797 /*****************************************************************************
 798  * DirectXUpdateOverlay: Move or resize overlay surface on video display.
 799  *****************************************************************************
 800  * This function is used to move or resize an overlay surface on the screen.
 801  * Ususally the overlay is moved by the user and thus, by a move or resize
 802  * event (in vout_Manage).
 803  *****************************************************************************/
 804 void DirectXUpdateOverlay( vout_thread_t *p_vout )
 805 {
 806     DDOVERLAYFX     ddofx;
 807     DWORD           dwFlags;
 808     HRESULT         dxresult;
 809
 810     if( p_vout->p_sys->p_current_surface == NULL ||
 811         !p_vout->p_sys->b_using_overlay )
 812         return;
 813
 814     /* The new window dimensions should already have been computed by the
 815      * caller of this function */
 816
 817     /* Position and show the overlay */
 818     memset(&ddofx, 0, sizeof(DDOVERLAYFX));
 819     ddofx.dwSize = sizeof(DDOVERLAYFX);
 820     ddofx.dckDestColorkey.dwColorSpaceLowValue = p_vout->p_sys->i_colorkey;
 821     ddofx.dckDestColorkey.dwColorSpaceHighValue = p_vout->p_sys->i_colorkey;
 822
 823     dwFlags = DDOVER_SHOW;
 824     if( !p_vout->p_sys->b_caps_overlay_clipping )
 825         dwFlags |= DDOVER_KEYDESTOVERRIDE;
 826
 827     dxresult = IDirectDrawSurface3_UpdateOverlay(
 828                                          p_vout->p_sys->p_current_surface,
 829                                          &p_vout->p_sys->rect_src_clipped,
 830                                          p_vout->p_sys->p_display,
 831                                          &p_vout->p_sys->rect_dest_clipped,
 832                                          dwFlags,
 833                                          &ddofx );
 834     if(dxresult != DD_OK)
 835     {
 836         intf_WarnMsg( 3,
 837           "vout: DirectXUpdateOverlay can't move or resize overlay" );
 838     }
 839
 840 }
 841
 842 /*****************************************************************************
 843  * DirectXCloseDDraw: Release the DDraw object allocated by DirectXInitDDraw
 844  *****************************************************************************
 845  * This function returns all resources allocated by DirectXInitDDraw.
 846  *****************************************************************************/
 847 static void DirectXCloseDDraw( vout_thread_t *p_vout )
 848 {
 849     intf_WarnMsg(3, "vout: DirectXCloseDDraw" );
 850     if( p_vout->p_sys->p_ddobject != NULL )
 851     {
 852         IDirectDraw2_Release(p_vout->p_sys->p_ddobject);
 853         p_vout->p_sys->p_ddobject = NULL;
 854     }
 855
 856     if( p_vout->p_sys->hddraw_dll != NULL )
 857     {
 858         FreeLibrary( p_vout->p_sys->hddraw_dll );
 859         p_vout->p_sys->hddraw_dll = NULL;
 860     }
 861 }
 862
 863 /*****************************************************************************
 864  * DirectXCloseDisplay: close and reset the DirectX display device
 865  *****************************************************************************
 866  * This function returns all resources allocated by DirectXCreateDisplay.
 867  *****************************************************************************/
 868 static void DirectXCloseDisplay( vout_thread_t *p_vout )
 869 {
 870     intf_WarnMsg( 3, "vout: DirectXCloseDisplay" );
 871
 872     if( p_vout->p_sys->p_clipper != NULL )
 873     {
 874         intf_WarnMsg( 3, "vout: DirectXCloseDisplay clipper" );
 875         IDirectDraw2_Release( p_vout->p_sys->p_clipper );
 876         p_vout->p_sys->p_clipper = NULL;
 877     }
 878
 879     if( p_vout->p_sys->p_display != NULL )
 880     {
 881         intf_WarnMsg( 3, "vout: DirectXCloseDisplay display" );
 882         IDirectDraw2_Release( p_vout->p_sys->p_display );
 883         p_vout->p_sys->p_display = NULL;
 884     }
 885 }
 886
 887 /*****************************************************************************
 888  * DirectXCloseSurface: close the YUV overlay or RGB surface.
 889  *****************************************************************************
 890  * This function returns all resources allocated for the surface.
 891  *****************************************************************************/
 892 static void DirectXCloseSurface( vout_thread_t *p_vout,
 893                                  LPDIRECTDRAWSURFACE3 p_surface )
 894 {
 895     intf_WarnMsg( 3, "vout: DirectXCloseSurface" );
 896     if( p_surface != NULL )
 897     {
 898         IDirectDraw2_Release( p_surface );
 899     }
 900 }
 901
 902 /*****************************************************************************
 903  * NewPictureVec: allocate a vector of identical pictures
 904  *****************************************************************************
 905  * Returns 0 on success, -1 otherwise
 906  *****************************************************************************/
 907 static int NewPictureVec( vout_thread_t *p_vout, picture_t *p_pic,
 908                           int i_num_pics )
 909 {
 910     int i;
 911     boolean_t b_result_ok;
 912     LPDIRECTDRAWSURFACE3 p_surface;
 913
 914     intf_WarnMsg( 3, "vout: NewPictureVec" );
 915
 916     I_OUTPUTPICTURES = 0;
 917
 918     /* Choose the chroma we will try first. */
 919     switch( p_vout->render.i_chroma )
 920     {
 921         case FOURCC_YUY2:
 922         case FOURCC_YUNV:
 923             p_vout->output.i_chroma = FOURCC_YUY2;
 924             break;
 925         case FOURCC_UYVY:
 926         case FOURCC_UYNV:
 927         case FOURCC_Y422:
 928             p_vout->output.i_chroma = FOURCC_UYVY;
 929             break;
 930         case FOURCC_YVYU:
 931             p_vout->output.i_chroma = FOURCC_YVYU;
 932             break;
 933         default:
 934             p_vout->output.i_chroma = FOURCC_YV12;
 935             break;
 936     }
 937
 938     /* First we try to use an YUV overlay surface.
 939      * The overlay surface that we create won't be used to decode directly
 940      * into it because accessing video memory directly is way to slow (remember
 941      * that pictures are decoded macroblock per macroblock). Instead the video
 942      * will be decoded in picture buffers in system memory which will then be
 943      * memcpy() to the overlay surface. */
 944     if( p_vout->p_sys->b_using_overlay )
 945     {
 946         /* Triple buffering rocks! it doesn't have any processing overhead
 947          * (you don't have to wait for the vsync) and provides for a very nice
 948          * video quality (no tearing). */
 949
 950         b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
 951                                             p_vout->output.i_chroma,
 952                                             p_vout->p_sys->b_using_overlay,
 953                                             2 /* number of backbuffers */ );
 954
 955         if( !b_result_ok )
 956             /* Try to reduce the number of backbuffers */
 957             b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
 958                                                 p_vout->output.i_chroma,
 959                                                 p_vout->p_sys->b_using_overlay,
 960                                                 0 /* number of backbuffers */);
 961
 962         if( b_result_ok )
 963         {
 964             DDSCAPS dds_caps;
 965             picture_t front_pic;
 966             picture_sys_t front_pic_sys;
 967             front_pic.p_sys = &front_pic_sys;
 968
 969             /* Allocate internal structure */
 970             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
 971             if( p_pic[0].p_sys == NULL )
 972             {
 973                 DirectXCloseSurface( p_vout, p_surface );
 974                 return -1;
 975             }
 976
 977             /* set front buffer */
 978             p_pic[0].p_sys->p_front_surface = p_surface;
 979
 980             /* Get the back buffer */
 981             memset( &dds_caps, 0, sizeof( DDSCAPS ) );
 982             dds_caps.dwCaps = DDSCAPS_BACKBUFFER;
 983             if( DD_OK != IDirectDrawSurface3_GetAttachedSurface(
 984                                                 p_surface, &dds_caps,
 985                                                 &p_pic[0].p_sys->p_surface ) )
 986             {
 987                 intf_WarnMsg( 3, "vout: NewPictureVec couldn't get "
 988                               "back buffer" );
 989                 /* front buffer is the same as back buffer */
 990                 p_pic[0].p_sys->p_surface = p_surface;
 991             }
 992
 993
 994             p_vout->p_sys->p_current_surface = front_pic.p_sys->p_surface =
 995                 p_pic[0].p_sys->p_front_surface;
 996
 997             /* reset the front buffer memory */
 998             if( DirectXGetSurfaceDesc( &front_pic ) &&
 999                 UpdatePictureStruct( p_vout, &front_pic,
1000                                      p_vout->output.i_chroma ) )
1001             {
1002                 int j;
1003                 for( j = 0; j < front_pic.i_planes; j++ )
1004                     memset( front_pic.p[j].p_pixels, 127,
1005                             front_pic.p[j].i_lines * front_pic.p[j].i_pitch
1006                             * front_pic.p[j].i_pixel_bytes );
1007             }
1008
1009             DirectXUpdateOverlay( p_vout );
1010             I_OUTPUTPICTURES = 1;
1011             intf_WarnMsg( 3,"vout: DirectX YUV overlay created successfully" );
1012         }
1013         else
1014         {
1015             intf_WarnMsg( 3, "vout: can't create an YUV overlay surface." );
1016             p_vout->p_sys->b_using_overlay = 0;
1017         }
1018     }
1019
1020     /* As we can't have an overlay, we'll try to create a plain offscreen
1021      * surface. This surface will reside in video memory because there's a
1022      * better chance then that we'll be able to use some kind of hardware
1023      * acceleration like rescaling, blitting or YUV->RGB conversions.
1024      * We then only need to blit this surface onto the main display when we
1025      * want to display it */
1026     if( !p_vout->p_sys->b_using_overlay )
1027     {
1028
1029         if( p_vout->p_sys->b_hw_yuv )
1030             b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
1031                                                 p_vout->output.i_chroma,
1032                                                 p_vout->p_sys->b_using_overlay,
1033                                                 0 /* no back buffers */ );
1034
1035         if( !p_vout->p_sys->b_hw_yuv || !b_result_ok )
1036         {
1037             /* Our last choice is to use a plain RGB surface */
1038             DDPIXELFORMAT ddpfPixelFormat;
1039
1040             ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1041             IDirectDrawSurface3_GetPixelFormat( p_vout->p_sys->p_display,
1042                                                 &ddpfPixelFormat );
1043
1044             if( ddpfPixelFormat.dwFlags & DDPF_RGB )
1045             {
1046                 switch( ddpfPixelFormat.dwRGBBitCount )
1047                 {
1048                 case 8: /* FIXME: set the palette */
1049                     p_vout->output.i_chroma = FOURCC_RGB2; break;
1050                 case 15:
1051                     p_vout->output.i_chroma = FOURCC_RV15; break;
1052                 case 16:
1053                     p_vout->output.i_chroma = FOURCC_RV16; break;
1054                 case 24:
1055                     p_vout->output.i_chroma = FOURCC_RV24; break;
1056                 case 32:
1057                     p_vout->output.i_chroma = FOURCC_RV32; break;
1058                 default:
1059                     intf_ErrMsg( "vout error: unknown screen depth" );
1060                     return( 0 );
1061                 }
1062                 p_vout->output.i_rmask = ddpfPixelFormat.dwRBitMask;
1063                 p_vout->output.i_gmask = ddpfPixelFormat.dwGBitMask;
1064                 p_vout->output.i_bmask = ddpfPixelFormat.dwBBitMask;
1065             }
1066
1067             p_vout->p_sys->b_hw_yuv = 0;
1068
1069             b_result_ok = DirectXCreateSurface( p_vout, &p_surface,
1070                                                 p_vout->output.i_chroma,
1071                                                 p_vout->p_sys->b_using_overlay,
1072                                                 0 /* no back buffers */ );
1073         }
1074
1075         if( b_result_ok )
1076         {
1077             /* Allocate internal structure */
1078             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1079             if( p_pic[0].p_sys == NULL )
1080             {
1081                 DirectXCloseSurface( p_vout, p_surface );
1082                 return -1;
1083             }
1084             p_pic[0].p_sys->p_surface = p_pic[0].p_sys->p_front_surface
1085                 = p_surface;
1086
1087             I_OUTPUTPICTURES = 1;
1088
1089             intf_WarnMsg( 3, "vout: DirectX plain surface created "
1090                              "successfully" );
1091         }
1092         else
1093             intf_ErrMsg( "vout error: DirectX can't create plain surface." );
1094     }
1095
1096
1097     /* Now that we've got all our direct-buffers, we can finish filling in the
1098      * picture_t structures */
1099     for( i = 0; i < I_OUTPUTPICTURES; i++ )
1100     {
1101         p_pic[i].i_status = DESTROYED_PICTURE;
1102         p_pic[i].i_type   = DIRECT_PICTURE;
1103         PP_OUTPUTPICTURE[i] = &p_pic[i];
1104
1105         if( !DirectXGetSurfaceDesc( &p_pic[i] ) )
1106         {
1107             /* AAARRGG */
1108             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1109             I_OUTPUTPICTURES = 0;
1110             return -1;
1111         }
1112
1113         if( !UpdatePictureStruct(p_vout, &p_pic[i], p_vout->output.i_chroma) )
1114         {
1115
1116             /* Unknown chroma, tell the guy to get lost */
1117             intf_ErrMsg( "vout error: never heard of chroma 0x%.8x (%4.4s)",
1118                          p_vout->output.i_chroma,
1119                          (char*)&p_vout->output.i_chroma );
1120             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1121             I_OUTPUTPICTURES = 0;
1122             return -1;
1123         }
1124     }
1125
1126     intf_WarnMsg( 3, "vout: End NewPictureVec");
1127     return 0;
1128 }
1129
1130 /*****************************************************************************
1131  * FreePicture: destroy a picture vector allocated with NewPictureVec
1132  *****************************************************************************
1133  *
1134  *****************************************************************************/
1135 static void FreePictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1136                             int i_num_pics )
1137 {
1138     int i;
1139
1140     for( i = 0; i < i_num_pics; i++ )
1141     {
1142         DirectXCloseSurface( p_vout, p_pic[i].p_sys->p_front_surface );
1143
1144         for( i = 0; i < i_num_pics; i++ )
1145         {
1146             free( p_pic[i].p_sys );
1147         }
1148     }
1149 }
1150
1151 /*****************************************************************************
1152  * UpdatePictureStruct: updates the internal data in the picture_t structure
1153  *****************************************************************************
1154  * This will setup stuff for use by the video_output thread
1155  *****************************************************************************/
1156 static int UpdatePictureStruct( vout_thread_t *p_vout, picture_t *p_pic,
1157                                 int i_chroma )
1158 {
1159
1160     switch( p_vout->output.i_chroma )
1161     {
1162
1163         case FOURCC_RGB2:
1164         case FOURCC_RV15:
1165         case FOURCC_RV16:
1166         case FOURCC_RV24:
1167         case FOURCC_RV32:
1168             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1169             p_pic->p->i_lines = p_vout->output.i_height;
1170             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1171             p_pic->p->b_margin = 0;
1172             p_pic->i_planes = 1;
1173             switch( p_vout->output.i_chroma )
1174             {
1175                 case FOURCC_RGB2:
1176                     p_pic->p->i_pixel_bytes = 1;
1177                     break;
1178                 case FOURCC_RV15:
1179                 case FOURCC_RV16:
1180                     p_pic->p->i_pixel_bytes = 2;
1181                     break;
1182                 case FOURCC_RV24:
1183                 case FOURCC_RV32:
1184                     p_pic->p->i_pixel_bytes = 4;
1185                     break;
1186                 default:
1187                     return( -1 );
1188             }
1189             break;
1190
1191         case FOURCC_YV12:
1192
1193             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1194             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1195             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1196             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
1197             p_pic->p[Y_PLANE].b_margin = 0;
1198
1199             p_pic->V_PIXELS =  p_pic->Y_PIXELS
1200               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1201             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1202             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1203             p_pic->p[V_PLANE].i_pixel_bytes = 1;
1204             p_pic->p[V_PLANE].b_margin = 0;
1205
1206             p_pic->U_PIXELS = p_pic->V_PIXELS
1207               + p_pic->p[V_PLANE].i_lines * p_pic->p[V_PLANE].i_pitch;
1208             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1209             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1210             p_pic->p[U_PLANE].i_pixel_bytes = 1;
1211             p_pic->p[U_PLANE].b_margin = 0;
1212
1213             p_pic->i_planes = 3;
1214             break;
1215
1216         case FOURCC_IYUV:
1217
1218             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1219             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1220             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1221             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
1222             p_pic->p[Y_PLANE].b_margin = 0;
1223
1224             p_pic->U_PIXELS = p_pic->Y_PIXELS
1225               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1226             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1227             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1228             p_pic->p[U_PLANE].i_pixel_bytes = 1;
1229             p_pic->p[U_PLANE].b_margin = 0;
1230
1231             p_pic->V_PIXELS =  p_pic->U_PIXELS
1232               + p_pic->p[U_PLANE].i_lines * p_pic->p[U_PLANE].i_pitch;
1233             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1234             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1235             p_pic->p[V_PLANE].i_pixel_bytes = 1;
1236             p_pic->p[V_PLANE].b_margin = 0;
1237
1238             p_pic->i_planes = 3;
1239             break;
1240
1241         default:
1242             /* Not supported */
1243             return 0;
1244
1245     }
1246
1247     return 1;
1248 }
1249
1250 /*****************************************************************************
1251  * DirectXGetDDrawCaps: Probe the capabilities of the hardware
1252  *****************************************************************************
1253  * It is nice to know which features are supported by the hardware so we can
1254  * find ways to optimize our rendering.
1255  *****************************************************************************/
1256 static void DirectXGetDDrawCaps( vout_thread_t *p_vout )
1257 {
1258     DDCAPS ddcaps;
1259     HRESULT dxresult;
1260
1261     /* This is just an indication of whether or not we'll support overlay,
1262      * but with this test we don't know if we support YUV overlay */
1263     memset( &ddcaps, 0, sizeof( DDCAPS ));
1264     ddcaps.dwSize = sizeof(DDCAPS);
1265     dxresult = IDirectDraw2_GetCaps( p_vout->p_sys->p_ddobject,
1266                                      &ddcaps, NULL );
1267     if(dxresult != DD_OK )
1268     {
1269         intf_WarnMsg( 3,"vout error: can't get caps." );
1270     }
1271     else
1272     {
1273         BOOL bHasOverlay, bHasOverlayFourCC, bCanClipOverlay,
1274              bHasColorKey, bCanStretch;
1275
1276         /* Determine if the hardware supports overlay surfaces */
1277         bHasOverlay = ((ddcaps.dwCaps & DDCAPS_OVERLAY) ==
1278                        DDCAPS_OVERLAY) ? TRUE : FALSE;
1279         /* Determine if the hardware supports overlay surfaces */
1280         bHasOverlayFourCC = ((ddcaps.dwCaps & DDCAPS_OVERLAYFOURCC) ==
1281                        DDCAPS_OVERLAYFOURCC) ? TRUE : FALSE;
1282         /* Determine if the hardware supports overlay surfaces */
1283         bCanClipOverlay = ((ddcaps.dwCaps & DDCAPS_OVERLAYCANTCLIP) ==
1284                        0 ) ? TRUE : FALSE;
1285         /* Determine if the hardware supports colorkeying */
1286         bHasColorKey = ((ddcaps.dwCaps & DDCAPS_COLORKEY) ==
1287                         DDCAPS_COLORKEY) ? TRUE : FALSE;
1288         /* Determine if the hardware supports scaling of the overlay surface */
1289         bCanStretch = ((ddcaps.dwCaps & DDCAPS_OVERLAYSTRETCH) ==
1290                        DDCAPS_OVERLAYSTRETCH) ? TRUE : FALSE;
1291         intf_WarnMsg( 3, "vout: DirectDraw Capabilities:" );
1292         intf_WarnMsg( 3, "       overlay=%i yuvoverlay=%i can_clip_overlay=%i "
1293                          "colorkey=%i stretch=%i",
1294                       bHasOverlay, bHasOverlayFourCC, bCanClipOverlay,
1295                       bHasColorKey, bCanStretch );
1296
1297         /* Overlay clipping support is interesting for us as it means we can
1298          * get rid of the colorkey alltogether */
1299         p_vout->p_sys->b_caps_overlay_clipping = bCanClipOverlay;
1300
1301     }
1302 }
1303
1304 /*****************************************************************************
1305  * DirectXGetSurfaceDesc: Get some more information about the surface
1306  *****************************************************************************
1307  * This function get and stores the surface descriptor which among things
1308  * has the pointer to the picture data.
1309  *****************************************************************************/
1310 static int DirectXGetSurfaceDesc( picture_t *p_pic )
1311 {
1312     HRESULT dxresult;
1313
1314     /* Lock the surface to get a valid pointer to the picture buffer */
1315     memset( &p_pic->p_sys->ddsd, 0, sizeof( DDSURFACEDESC ));
1316     p_pic->p_sys->ddsd.dwSize = sizeof(DDSURFACEDESC);
1317     dxresult = IDirectDrawSurface3_Lock( p_pic->p_sys->p_surface,
1318                                          NULL, &p_pic->p_sys->ddsd,
1319                                          DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1320                                          NULL );
1321     if ( dxresult == DDERR_SURFACELOST )
1322     {
1323         /* Your surface can be lost so be sure
1324          * to check this and restore it if needed */
1325         dxresult = IDirectDrawSurface3_Restore( p_pic->p_sys->p_surface );
1326         dxresult = IDirectDrawSurface3_Lock( p_pic->p_sys->p_surface, NULL,
1327                                              &p_pic->p_sys->ddsd,
1328                                              DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1329                                              NULL);
1330     }
1331     if( dxresult != DD_OK )
1332     {
1333         intf_ErrMsg( "vout: DirectXGetSurfaceDesc can't lock surface" );
1334         return 0;
1335     }
1336
1337     /* Unlock the Surface */
1338     dxresult = IDirectDrawSurface3_Unlock( p_pic->p_sys->p_surface, NULL );
1339
1340     return 1;
1341 }