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

   1 /*****************************************************************************
   2  * directx.c: Windows DirectDraw video output
   3  *****************************************************************************
   4  * Copyright (C) 2001-2009 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Gildas Bazin <gbazin@videolan.org>
   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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, 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 #ifdef HAVE_CONFIG_H
  38 # include "config.h"
  39 #endif
  40
  41 #include <assert.h>
  42
  43 #include <vlc_common.h>
  44 #include <vlc_plugin.h>
  45 #include <vlc_vout.h>
  46 #include <vlc_playlist.h>   /* needed for wallpaper */
  47 #include <vlc_memory.h>
  48
  49 #include <ddraw.h>
  50 #include <commctrl.h>       /* ListView_(Get|Set)* */
  51
  52 #ifndef UNDER_CE
  53 #   include <multimon.h>
  54 #endif
  55 #undef GetSystemMetrics
  56
  57 #ifndef MONITOR_DEFAULTTONEAREST
  58 #   define MONITOR_DEFAULTTONEAREST 2
  59 #endif
  60
  61 #include "vout.h"
  62
  63 /*****************************************************************************
  64  * picture_sys_t: direct buffer method descriptor
  65  *****************************************************************************
  66  * This structure is part of the picture descriptor, it describes the
  67  * DirectX specific properties of a direct buffer.
  68  *****************************************************************************/
  69 struct picture_sys_t
  70 {
  71     LPDIRECTDRAWSURFACE2 p_surface;
  72     LPDIRECTDRAWSURFACE2 p_front_surface;
  73     DDSURFACEDESC        ddsd;
  74 };
  75
  76 /*****************************************************************************
  77  * DirectDraw GUIDs.
  78  * Defining them here allows us to get rid of the dxguid library during
  79  * the linking stage.
  80  *****************************************************************************/
  81 #include <initguid.h>
  82 #undef GUID_EXT
  83 #define GUID_EXT
  84 DEFINE_GUID( IID_IDirectDraw2, 0xB3A6F3E0,0x2B43,0x11CF,0xA2,0xDE,0x00,0xAA,0x00,0xB9,0x33,0x56 );
  85 DEFINE_GUID( IID_IDirectDrawSurface2, 0x57805885,0x6eec,0x11cf,0x94,0x41,0xa8,0x23,0x03,0xc1,0x0e,0x27 );
  86
  87 /*****************************************************************************
  88  * Local prototypes.
  89  *****************************************************************************/
  90 static int  OpenVideo  ( vlc_object_t * );
  91 static void CloseVideo ( vlc_object_t * );
  92
  93 static int  Init      ( vout_thread_t * );
  94 static void End       ( vout_thread_t * );
  95 static int  Manage    ( vout_thread_t * );
  96 static void Display   ( vout_thread_t *, picture_t * );
  97 static void FirstDisplay( vout_thread_t *, picture_t * );
  98 static void SetPalette( vout_thread_t *, uint16_t *, uint16_t *, uint16_t * );
  99
 100 static int  NewPictureVec  ( vout_thread_t *, picture_t * );
 101 static void FreePictureVec ( vout_thread_t *, picture_t *, int );
 102 static int  UpdatePictureStruct( vout_thread_t *, picture_t * );
 103
 104 static int  DirectXInitDDraw      ( vout_thread_t *p_vout );
 105 static void DirectXCloseDDraw     ( vout_thread_t *p_vout );
 106 static int  DirectXCreateDisplay  ( vout_thread_t *p_vout );
 107 static void DirectXCloseDisplay   ( vout_thread_t *p_vout );
 108 static int  DirectXCreateSurface  ( vout_thread_t *p_vout,
 109                                     LPDIRECTDRAWSURFACE2 *, int, int, int );
 110 static void DirectXCloseSurface   ( vout_thread_t *p_vout,
 111                                     LPDIRECTDRAWSURFACE2 );
 112 static int  DirectXCreateClipper  ( vout_thread_t *p_vout );
 113 static void DirectXGetDDrawCaps   ( vout_thread_t *p_vout );
 114 static int  DirectXLockSurface    ( vout_thread_t *p_vout, picture_t *p_pic );
 115 static int  DirectXUnlockSurface  ( vout_thread_t *p_vout, picture_t *p_pic );
 116
 117 static DWORD DirectXFindColorkey( vout_thread_t *p_vout, uint32_t *i_color );
 118
 119 void SwitchWallpaperMode( vout_thread_t *, bool );
 120
 121 /* Object variables callbacks */
 122 static int FindDevicesCallback( vlc_object_t *, char const *,
 123                                 vlc_value_t, vlc_value_t, void * );
 124 static int WallpaperCallback( vlc_object_t *, char const *,
 125                               vlc_value_t, vlc_value_t, void * );
 126
 127 BOOL WINAPI DirectXEnumCallback( GUID* p_guid, LPTSTR psz_desc,
 128                                  LPTSTR psz_drivername, VOID* p_context,
 129                                  HMONITOR hmon );
 130
 131 BOOL WINAPI DirectXEnumCallback2( GUID* p_guid, LPTSTR psz_desc,
 132                                   LPTSTR psz_drivername, VOID* p_context,
 133                                   HMONITOR hmon );
 134
 135 /*****************************************************************************
 136  * Module descriptor
 137  *****************************************************************************/
 138 #define HW_YUV_TEXT N_("Use hardware YUV->RGB conversions")
 139 #define HW_YUV_LONGTEXT N_( \
 140     "Try to use hardware acceleration for YUV->RGB conversions. " \
 141     "This option doesn't have any effect when using overlays." )
 142
 143 #define SYSMEM_TEXT N_("Use video buffers in system memory")
 144 #define SYSMEM_LONGTEXT N_( \
 145     "Create video buffers in system memory instead of video memory. This " \
 146     "isn't recommended as usually using video memory allows to benefit from " \
 147     "more hardware acceleration (like rescaling or YUV->RGB conversions). " \
 148     "This option doesn't have any effect when using overlays." )
 149
 150 #define TRIPLEBUF_TEXT N_("Use triple buffering for overlays")
 151 #define TRIPLEBUF_LONGTEXT N_( \
 152     "Try to use triple buffering when using YUV overlays. That results in " \
 153     "much better video quality (no flickering)." )
 154
 155 #define DEVICE_TEXT N_("Name of desired display device")
 156 #define DEVICE_LONGTEXT N_("In a multiple monitor configuration, you can " \
 157     "specify the Windows device name of the display that you want the video " \
 158     "window to open on. For example, \"\\\\.\\DISPLAY1\" or " \
 159     "\"\\\\.\\DISPLAY2\"." )
 160
 161 #define WALLPAPER_TEXT N_("Enable wallpaper mode ")
 162 #define WALLPAPER_LONGTEXT N_( \
 163     "The wallpaper mode allows you to display the video as the desktop " \
 164     "background. Note that this feature only works in overlay mode and " \
 165     "the desktop must not already have a wallpaper." )
 166
 167 static const char *const ppsz_dev[] = { "" };
 168 static const char *const ppsz_dev_text[] = { N_("Default") };
 169
 170 vlc_module_begin ()
 171     set_shortname( "DirectX" )
 172     set_category( CAT_VIDEO )
 173     set_subcategory( SUBCAT_VIDEO_VOUT )
 174     add_bool( "directx-hw-yuv", true, NULL, HW_YUV_TEXT, HW_YUV_LONGTEXT,
 175               true )
 176     add_bool( "directx-use-sysmem", false, NULL, SYSMEM_TEXT, SYSMEM_LONGTEXT,
 177               true )
 178     add_bool( "directx-3buffering", true, NULL, TRIPLEBUF_TEXT,
 179               TRIPLEBUF_LONGTEXT, true )
 180
 181     add_string( "directx-device", "", NULL, DEVICE_TEXT, DEVICE_LONGTEXT,
 182                 true )
 183         change_string_list( ppsz_dev, ppsz_dev_text, FindDevicesCallback )
 184         change_action_add( FindDevicesCallback, N_("Refresh list") )
 185
 186     add_bool( "directx-wallpaper", false, NULL, WALLPAPER_TEXT, WALLPAPER_LONGTEXT,
 187               true )
 188
 189     set_description( N_("DirectX (DirectDraw) video output") )
 190     set_capability( "video output", 100 )
 191     add_shortcut( "directx" )
 192     set_callbacks( OpenVideo, CloseVideo )
 193
 194     /* FIXME: Hack to avoid unregistering our window class */
 195     linked_with_a_crap_library_which_uses_atexit ()
 196 vlc_module_end ()
 197
 198 #if 0 /* FIXME */
 199     /* check if we registered a window class because we need to
 200      * unregister it */
 201     WNDCLASS wndclass;
 202     if( GetClassInfo( GetModuleHandle(NULL), "VLC DirectX", &wndclass ) )
 203         UnregisterClass( "VLC DirectX", GetModuleHandle(NULL) );
 204 #endif
 205
 206 /*****************************************************************************
 207  * OpenVideo: allocate DirectX video thread output method
 208  *****************************************************************************
 209  * This function allocates and initialize the DirectX vout method.
 210  *****************************************************************************/
 211 static int OpenVideo( vlc_object_t *p_this )
 212 {
 213     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 214     vlc_value_t val;
 215     HMODULE huser32;
 216
 217     /* Allocate structure */
 218     p_vout->p_sys = calloc( 1, sizeof( vout_sys_t ) );
 219     if( p_vout->p_sys == NULL )
 220         return VLC_ENOMEM;
 221     vlc_mutex_init( &p_vout->p_sys->lock );
 222
 223     /* Initialisations */
 224     p_vout->pf_init = Init;
 225     p_vout->pf_end = End;
 226     p_vout->pf_manage = Manage;
 227     p_vout->pf_render = NULL;
 228     p_vout->pf_display = FirstDisplay;
 229     p_vout->pf_control = Control;
 230
 231     if( CommonInit( p_vout ) )
 232         goto error;
 233
 234     /* */
 235     p_vout->p_sys->p_ddobject = NULL;
 236     p_vout->p_sys->p_display = NULL;
 237     p_vout->p_sys->p_current_surface = NULL;
 238     p_vout->p_sys->p_clipper = NULL;
 239     p_vout->p_sys->b_wallpaper = 0;
 240
 241     /* Multimonitor stuff */
 242     p_vout->p_sys->hmonitor = NULL;
 243     p_vout->p_sys->p_display_driver = NULL;
 244     p_vout->p_sys->MonitorFromWindow = NULL;
 245     p_vout->p_sys->GetMonitorInfo = NULL;
 246     if( (huser32 = GetModuleHandle( _T("USER32") ) ) )
 247     {
 248         p_vout->p_sys->MonitorFromWindow = (HMONITOR (WINAPI *)( HWND, DWORD ))
 249             GetProcAddress( huser32, _T("MonitorFromWindow") );
 250         p_vout->p_sys->GetMonitorInfo =
 251             GetProcAddress( huser32, _T("GetMonitorInfoW") );
 252     }
 253
 254     var_Create( p_vout, "overlay", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 255     var_Create( p_vout, "directx-use-sysmem", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 256     var_Create( p_vout, "directx-hw-yuv", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 257     var_Create( p_vout, "directx-3buffering", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 258     var_Create( p_vout, "directx-device", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 259
 260     /* Initialise DirectDraw */
 261     if( DirectXInitDDraw( p_vout ) )
 262     {
 263         msg_Err( p_vout, "cannot initialize DirectX DirectDraw" );
 264         goto error;
 265     }
 266
 267     /* Create the directx display */
 268     if( DirectXCreateDisplay( p_vout ) )
 269     {
 270         msg_Err( p_vout, "cannot initialize DirectX DirectDraw" );
 271         goto error;
 272     }
 273
 274     /* Variable to indicate if the window should be on top of others */
 275     /* Trigger a callback right now */
 276     var_Create( p_vout, "directx-wallpaper", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 277     val.psz_string = _("Wallpaper");
 278     var_Change( p_vout, "directx-wallpaper", VLC_VAR_SETTEXT, &val, NULL );
 279     var_AddCallback( p_vout, "directx-wallpaper", WallpaperCallback, NULL );
 280     var_TriggerCallback( p_vout, "directx-wallpaper" );
 281
 282     return VLC_SUCCESS;
 283
 284  error:
 285     CloseVideo( VLC_OBJECT(p_vout) );
 286     return VLC_EGENERIC;
 287 }
 288
 289 /*****************************************************************************
 290  * Init: initialize DirectX video thread output method
 291  *****************************************************************************
 292  * This function create the directx surfaces needed by the output thread.
 293  * It is called at the beginning of the thread.
 294  *****************************************************************************/
 295 static int Init( vout_thread_t *p_vout )
 296 {
 297     int i_chroma_backup;
 298
 299     /* Get a few default parameters */
 300     p_vout->p_sys->b_using_overlay = var_GetBool( p_vout, "overlay" );
 301     p_vout->p_sys->b_use_sysmem = var_GetBool( p_vout, "directx-use-sysmem" );
 302     p_vout->p_sys->b_hw_yuv = var_GetBool( p_vout, "directx-hw-yuv" );
 303     p_vout->p_sys->b_3buf_overlay = var_GetBool( p_vout, "directx-3buffering" );
 304
 305     /* Initialise DirectDraw if not already done.
 306      * We do this here because on multi-monitor systems we may have to
 307      * re-create the directdraw surfaces. */
 308     if( !p_vout->p_sys->p_ddobject &&
 309         DirectXInitDDraw( p_vout ) != VLC_SUCCESS )
 310     {
 311         msg_Err( p_vout, "cannot initialize DirectDraw" );
 312         return VLC_EGENERIC;
 313     }
 314
 315     /* Create the directx display */
 316     if( !p_vout->p_sys->p_display &&
 317         DirectXCreateDisplay( p_vout ) != VLC_SUCCESS )
 318     {
 319         msg_Err( p_vout, "cannot initialize DirectDraw" );
 320         return VLC_EGENERIC;
 321     }
 322
 323     /* Initialize the output structure.
 324      * Since DirectDraw can do rescaling for us, stick to the default
 325      * coordinates and aspect. */
 326     p_vout->output.i_width  = p_vout->render.i_width;
 327     p_vout->output.i_height = p_vout->render.i_height;
 328     p_vout->output.i_aspect = p_vout->render.i_aspect;
 329     p_vout->fmt_out = p_vout->fmt_in;
 330     UpdateRects( p_vout, true );
 331
 332 #define MAX_DIRECTBUFFERS 1
 333     /* Right now we use only 1 directbuffer because we don't want the
 334      * video decoder to decode directly into direct buffers as they are
 335      * created into video memory and video memory is _really_ slow */
 336
 337     /* Choose the chroma we will try first. */
 338     switch( p_vout->render.i_chroma )
 339     {
 340         case VLC_CODEC_YUYV:
 341             p_vout->output.i_chroma = VLC_CODEC_YUYV;
 342             break;
 343         case VLC_CODEC_UYVY:
 344             p_vout->output.i_chroma = VLC_CODEC_UYVY;
 345             break;
 346         case VLC_CODEC_YVYU:
 347             p_vout->output.i_chroma = VLC_CODEC_YVYU;
 348             break;
 349         case VLC_CODEC_I420:
 350             p_vout->output.i_chroma = VLC_CODEC_I420;
 351             break;
 352         default:
 353             msg_Dbg( p_vout, "use default chroma YV12 for render " \
 354                              "chroma (%4.4s)",
 355                              (char *)&p_vout->render.i_chroma);
 356             p_vout->output.i_chroma = VLC_CODEC_YV12;
 357             break;
 358     }
 359
 360     NewPictureVec( p_vout, p_vout->p_picture );
 361
 362     i_chroma_backup = p_vout->output.i_chroma;
 363
 364     if( !I_OUTPUTPICTURES )
 365     {
 366         /* hmmm, it didn't work! Let's try commonly supported chromas */
 367         if( p_vout->output.i_chroma != VLC_CODEC_I420 )
 368         {
 369             p_vout->output.i_chroma = VLC_CODEC_YV12;
 370             NewPictureVec( p_vout, p_vout->p_picture );
 371         }
 372         if( !I_OUTPUTPICTURES )
 373         {
 374             /* hmmm, it still didn't work! Let's try another one */
 375             p_vout->output.i_chroma = VLC_CODEC_YUYV;
 376             NewPictureVec( p_vout, p_vout->p_picture );
 377         }
 378     }
 379
 380     if( !I_OUTPUTPICTURES )
 381     {
 382         /* If it still didn't work then don't try to use an overlay */
 383         p_vout->output.i_chroma = i_chroma_backup;
 384         p_vout->p_sys->b_using_overlay = false;
 385         msg_Warn( p_vout, "Could not initialize directx overlay" ) ;
 386         NewPictureVec( p_vout, p_vout->p_picture );
 387     }
 388
 389     p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 390
 391     /* Change the window title bar text */
 392     const char *psz_fallback;
 393     if( p_vout->p_sys->b_using_overlay )
 394         psz_fallback = VOUT_TITLE " (hardware YUV overlay DirectX output)";
 395     else if( p_vout->p_sys->b_hw_yuv )
 396         psz_fallback = VOUT_TITLE " (hardware YUV DirectX output)";
 397     else
 398         psz_fallback = VOUT_TITLE " (software RGB DirectX output)";
 399     EventThreadUpdateTitle( p_vout->p_sys->p_event, psz_fallback );
 400     EventThreadUseOverlay( p_vout->p_sys->p_event, p_vout->p_sys->b_using_overlay );
 401
 402     return VLC_SUCCESS;
 403 }
 404
 405 /*****************************************************************************
 406  * End: terminate Sys video thread output method
 407  *****************************************************************************
 408  * Terminate an output method created by Create.
 409  * It is called at the end of the thread.
 410  *****************************************************************************/
 411 static void End( vout_thread_t *p_vout )
 412 {
 413     FreePictureVec( p_vout, p_vout->p_picture, I_OUTPUTPICTURES );
 414
 415     DirectXCloseDisplay( p_vout );
 416     DirectXCloseDDraw( p_vout );
 417
 418     return;
 419 }
 420
 421 /*****************************************************************************
 422  * CloseVideo: destroy Sys video thread output method
 423  *****************************************************************************
 424  * Terminate an output method created by Create
 425  *****************************************************************************/
 426 static void CloseVideo( vlc_object_t *p_this )
 427 {
 428     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 429
 430     /* Make sure the wallpaper is restored */
 431     var_DelCallback( p_vout, "directx-wallpaper", WallpaperCallback, NULL );
 432     SwitchWallpaperMode( p_vout, false );
 433
 434     CommonClean( p_vout );
 435
 436     vlc_mutex_destroy( &p_vout->p_sys->lock );
 437     free( p_vout->p_sys );
 438 }
 439
 440 /*****************************************************************************
 441  * Manage: handle Sys events
 442  *****************************************************************************
 443  * This function should be called regularly by the video output thread.
 444  * It returns a non null value if an error occurred.
 445  *****************************************************************************/
 446 static int Manage( vout_thread_t *p_vout )
 447 {
 448     CommonManage( p_vout );
 449
 450     /*
 451      * Position Change
 452      */
 453     if( p_vout->p_sys->i_changes & DX_POSITION_CHANGE )
 454     {
 455         p_vout->p_sys->i_changes &= ~DX_POSITION_CHANGE;
 456
 457         /* Check if we are still on the same monitor */
 458         if( p_vout->p_sys->MonitorFromWindow &&
 459             p_vout->p_sys->hmonitor !=
 460                 p_vout->p_sys->MonitorFromWindow( p_vout->p_sys->hwnd,
 461                                                   MONITOR_DEFAULTTONEAREST ) )
 462         {
 463             /* This will force the vout core to recreate the picture buffers */
 464             p_vout->i_changes |= VOUT_PICTURE_BUFFERS_CHANGE;
 465         }
 466     }
 467
 468     if( p_vout->p_sys->i_changes & DX_WALLPAPER_CHANGE )
 469     {
 470         SwitchWallpaperMode( p_vout, !p_vout->p_sys->b_wallpaper );
 471         p_vout->p_sys->i_changes &= ~DX_WALLPAPER_CHANGE;
 472         DirectDrawUpdateOverlay( p_vout );
 473     }
 474
 475     return VLC_SUCCESS;
 476 }
 477
 478 /*****************************************************************************
 479  * Display: displays previously rendered output
 480  *****************************************************************************
 481  * This function sends the currently rendered image to the display, wait until
 482  * it is displayed and switch the two rendering buffers, preparing next frame.
 483  *****************************************************************************/
 484 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 485 {
 486     HRESULT dxresult;
 487
 488     if( (p_vout->p_sys->p_display == NULL) )
 489     {
 490         msg_Warn( p_vout, "no display!" );
 491         return;
 492     }
 493
 494     /* Our surface can be lost so be sure to check this
 495      * and restore it if need be */
 496     if( IDirectDrawSurface2_IsLost( p_vout->p_sys->p_display )
 497         == DDERR_SURFACELOST )
 498     {
 499         if( IDirectDrawSurface2_Restore( p_vout->p_sys->p_display ) == DD_OK &&
 500             p_vout->p_sys->b_using_overlay )
 501             DirectDrawUpdateOverlay( p_vout );
 502     }
 503
 504     if( !p_vout->p_sys->b_using_overlay )
 505     {
 506         DDBLTFX  ddbltfx;
 507
 508         /* We ask for the "NOTEARING" option */
 509         memset( &ddbltfx, 0, sizeof(DDBLTFX) );
 510         ddbltfx.dwSize = sizeof(DDBLTFX);
 511         ddbltfx.dwDDFX = DDBLTFX_NOTEARING;
 512
 513         /* Blit video surface to display */
 514         dxresult = IDirectDrawSurface2_Blt( p_vout->p_sys->p_display,
 515                                             &p_vout->p_sys->rect_dest_clipped,
 516                                             p_pic->p_sys->p_surface,
 517                                             &p_vout->p_sys->rect_src_clipped,
 518                                             DDBLT_ASYNC, &ddbltfx );
 519         if( dxresult != DD_OK )
 520         {
 521             msg_Warn( p_vout, "could not blit surface (error %li)", dxresult );
 522             return;
 523         }
 524     }
 525     else /* using overlay */
 526     {
 527         /* Flip the overlay buffers if we are using back buffers */
 528         if( p_pic->p_sys->p_front_surface == p_pic->p_sys->p_surface )
 529         {
 530             return;
 531         }
 532
 533         dxresult = IDirectDrawSurface2_Flip( p_pic->p_sys->p_front_surface,
 534                                              NULL, DDFLIP_WAIT );
 535         if( dxresult != DD_OK )
 536         {
 537             msg_Warn( p_vout, "could not flip overlay (error %li)", dxresult );
 538         }
 539
 540         /* set currently displayed pic */
 541         p_vout->p_sys->p_current_surface = p_pic->p_sys->p_front_surface;
 542
 543         /* Lock surface to get all the required info */
 544         if( DirectXLockSurface( p_vout, p_pic ) )
 545         {
 546             /* AAARRGG */
 547             msg_Warn( p_vout, "cannot lock surface" );
 548             return;
 549         }
 550         DirectXUnlockSurface( p_vout, p_pic );
 551     }
 552 }
 553
 554 /*
 555 ** this function is only used once when the first picture is received
 556 ** this function will show the video window once video is ready for
 557 ** display.
 558 */
 559
 560 static void FirstDisplay( vout_thread_t *p_vout, picture_t *p_pic )
 561 {
 562     /* get initial picture rendered on overlay surface */
 563     Display(p_vout, p_pic);
 564
 565     IDirectDraw_WaitForVerticalBlank(p_vout->p_sys->p_ddobject,
 566             DDWAITVB_BLOCKBEGIN, NULL);
 567
 568     if( p_vout->p_sys->b_using_overlay )
 569     {
 570         HBRUSH brush = CreateSolidBrush( p_vout->p_sys->i_rgb_colorkey );
 571         /* set the colorkey as the backgound brush for the video window */
 572         SetClassLongPtr( p_vout->p_sys->hvideownd, GCLP_HBRBACKGROUND, (LONG_PTR)brush );
 573     }
 574     /*
 575     ** Video window is initially hidden, show it now since we got a
 576     ** picture to show.
 577     */
 578     SetWindowPos( p_vout->p_sys->hvideownd, NULL, 0, 0, 0, 0,
 579         SWP_ASYNCWINDOWPOS|
 580         SWP_FRAMECHANGED|
 581         SWP_SHOWWINDOW|
 582         SWP_NOMOVE|
 583         SWP_NOSIZE|
 584         SWP_NOZORDER );
 585
 586     /* use and restores proper display function for further pictures */
 587     p_vout->pf_display = Display;
 588 }
 589
 590 /* following functions are local */
 591
 592 /*****************************************************************************
 593  * DirectXEnumCallback: Device enumeration
 594  *****************************************************************************
 595  * This callback function is called by DirectDraw once for each
 596  * available DirectDraw device.
 597  *****************************************************************************/
 598 BOOL WINAPI DirectXEnumCallback( GUID* p_guid, LPTSTR psz_desc,
 599                                  LPTSTR psz_drivername, VOID* p_context,
 600                                  HMONITOR hmon )
 601 {
 602     vout_thread_t *p_vout = (vout_thread_t *)p_context;
 603     char *psz_device;
 604
 605     msg_Dbg( p_vout, "DirectXEnumCallback: %s, %s", psz_desc, psz_drivername );
 606
 607     if( hmon )
 608     {
 609         psz_device = var_GetString( p_vout, "directx-device" );
 610
 611         if( ( !psz_device || !*psz_device ) &&
 612             hmon == p_vout->p_sys->hmonitor )
 613         {
 614             free( psz_device );
 615         }
 616         else if( strcmp( psz_drivername, psz_device ) == 0 )
 617         {
 618             MONITORINFO monitor_info;
 619             monitor_info.cbSize = sizeof( MONITORINFO );
 620
 621             if( p_vout->p_sys->GetMonitorInfo( hmon, &monitor_info ) )
 622             {
 623                 RECT rect;
 624
 625                 /* Move window to the right screen */
 626                 GetWindowRect( p_vout->p_sys->hwnd, &rect );
 627                 if( !IntersectRect( &rect, &rect, &monitor_info.rcWork ) )
 628                 {
 629                     rect.left = monitor_info.rcWork.left;
 630                     rect.top = monitor_info.rcWork.top;
 631                     msg_Dbg( p_vout, "DirectXEnumCallback: setting window "
 632                              "position to %ld,%ld", rect.left, rect.top );
 633                     SetWindowPos( p_vout->p_sys->hwnd, NULL,
 634                                   rect.left, rect.top, 0, 0,
 635                                   SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 636                 }
 637             }
 638
 639             p_vout->p_sys->hmonitor = hmon;
 640             free( psz_device );
 641         }
 642         else
 643         {
 644             free( psz_device );
 645             return TRUE; /* Keep enumerating */
 646         }
 647
 648         msg_Dbg( p_vout, "selecting %s, %s", psz_desc, psz_drivername );
 649         p_vout->p_sys->p_display_driver = malloc( sizeof(GUID) );
 650         if( p_vout->p_sys->p_display_driver )
 651             memcpy( p_vout->p_sys->p_display_driver, p_guid, sizeof(GUID) );
 652     }
 653
 654     return TRUE; /* Keep enumerating */
 655 }
 656
 657 /*****************************************************************************
 658  * DirectXInitDDraw: Takes care of all the DirectDraw initialisations
 659  *****************************************************************************
 660  * This function initialise and allocate resources for DirectDraw.
 661  *****************************************************************************/
 662 static int DirectXInitDDraw( vout_thread_t *p_vout )
 663 {
 664     HRESULT dxresult;
 665     HRESULT (WINAPI *OurDirectDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *);
 666     HRESULT (WINAPI *OurDirectDrawEnumerateEx)( LPDDENUMCALLBACKEXA, LPVOID,
 667                                                 DWORD );
 668     LPDIRECTDRAW p_ddobject;
 669
 670     msg_Dbg( p_vout, "DirectXInitDDraw" );
 671
 672     /* Load direct draw DLL */
 673     p_vout->p_sys->hddraw_dll = LoadLibrary(_T("DDRAW.DLL"));
 674     if( p_vout->p_sys->hddraw_dll == NULL )
 675     {
 676         msg_Warn( p_vout, "DirectXInitDDraw failed loading ddraw.dll" );
 677         goto error;
 678     }
 679
 680     OurDirectDrawCreate =
 681       (void *)GetProcAddress( p_vout->p_sys->hddraw_dll,
 682                               _T("DirectDrawCreate") );
 683     if( OurDirectDrawCreate == NULL )
 684     {
 685         msg_Err( p_vout, "DirectXInitDDraw failed GetProcAddress" );
 686         goto error;
 687     }
 688
 689     OurDirectDrawEnumerateEx =
 690       (void *)GetProcAddress( p_vout->p_sys->hddraw_dll,
 691                               _T("DirectDrawEnumerateExW") );
 692
 693     if( OurDirectDrawEnumerateEx && p_vout->p_sys->MonitorFromWindow )
 694     {
 695         char *psz_device;
 696
 697         psz_device = var_GetString( p_vout, "directx-device" );
 698         if( psz_device )
 699         {
 700             msg_Dbg( p_vout, "directx-device: %s", psz_device );
 701             free( psz_device );
 702         }
 703
 704         p_vout->p_sys->hmonitor =
 705             p_vout->p_sys->MonitorFromWindow( p_vout->p_sys->hwnd,
 706                                               MONITOR_DEFAULTTONEAREST );
 707
 708         /* Enumerate displays */
 709         OurDirectDrawEnumerateEx( DirectXEnumCallback, p_vout,
 710                                   DDENUM_ATTACHEDSECONDARYDEVICES );
 711     }
 712
 713     /* Initialize DirectDraw now */
 714     dxresult = OurDirectDrawCreate( p_vout->p_sys->p_display_driver,
 715                                     &p_ddobject, NULL );
 716     if( dxresult != DD_OK )
 717     {
 718         msg_Err( p_vout, "DirectXInitDDraw cannot initialize DDraw" );
 719         goto error;
 720     }
 721
 722     /* Get the IDirectDraw2 interface */
 723     dxresult = IDirectDraw_QueryInterface( p_ddobject, &IID_IDirectDraw2,
 724                                         &p_vout->p_sys->p_ddobject );
 725     /* Release the unused interface */
 726     IDirectDraw_Release( p_ddobject );
 727     if( dxresult != DD_OK )
 728     {
 729         msg_Err( p_vout, "cannot get IDirectDraw2 interface" );
 730         goto error;
 731     }
 732
 733     /* Set DirectDraw Cooperative level, ie what control we want over Windows
 734      * display */
 735     dxresult = IDirectDraw2_SetCooperativeLevel( p_vout->p_sys->p_ddobject,
 736                                                  NULL, DDSCL_NORMAL );
 737     if( dxresult != DD_OK )
 738     {
 739         msg_Err( p_vout, "cannot set direct draw cooperative level" );
 740         goto error;
 741     }
 742
 743     /* Get the size of the current display device */
 744     if( p_vout->p_sys->hmonitor && p_vout->p_sys->GetMonitorInfo )
 745     {
 746         MONITORINFO monitor_info;
 747         monitor_info.cbSize = sizeof( MONITORINFO );
 748         p_vout->p_sys->GetMonitorInfo( p_vout->p_sys->hmonitor,
 749                                        &monitor_info );
 750         p_vout->p_sys->rect_display = monitor_info.rcMonitor;
 751     }
 752     else
 753     {
 754         p_vout->p_sys->rect_display.left = 0;
 755         p_vout->p_sys->rect_display.top = 0;
 756         p_vout->p_sys->rect_display.right  = GetSystemMetrics(SM_CXSCREEN);
 757         p_vout->p_sys->rect_display.bottom = GetSystemMetrics(SM_CYSCREEN);
 758     }
 759
 760     msg_Dbg( p_vout, "screen dimensions (%lix%li,%lix%li)",
 761              p_vout->p_sys->rect_display.left,
 762              p_vout->p_sys->rect_display.top,
 763              p_vout->p_sys->rect_display.right,
 764              p_vout->p_sys->rect_display.bottom );
 765
 766     /* Probe the capabilities of the hardware */
 767     DirectXGetDDrawCaps( p_vout );
 768
 769     msg_Dbg( p_vout, "End DirectXInitDDraw" );
 770     return VLC_SUCCESS;
 771
 772  error:
 773     if( p_vout->p_sys->p_ddobject )
 774         IDirectDraw2_Release( p_vout->p_sys->p_ddobject );
 775     if( p_vout->p_sys->hddraw_dll )
 776         FreeLibrary( p_vout->p_sys->hddraw_dll );
 777     p_vout->p_sys->hddraw_dll = NULL;
 778     p_vout->p_sys->p_ddobject = NULL;
 779     return VLC_EGENERIC;
 780 }
 781
 782 /*****************************************************************************
 783  * DirectXCreateDisplay: create the DirectDraw display.
 784  *****************************************************************************
 785  * Create and initialize display according to preferences specified in the vout
 786  * thread fields.
 787  *****************************************************************************/
 788 static int DirectXCreateDisplay( vout_thread_t *p_vout )
 789 {
 790     HRESULT              dxresult;
 791     DDSURFACEDESC        ddsd;
 792     LPDIRECTDRAWSURFACE  p_display;
 793
 794     msg_Dbg( p_vout, "DirectXCreateDisplay" );
 795
 796     /* Now get the primary surface. This surface is what you actually see
 797      * on your screen */
 798     memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 799     ddsd.dwSize = sizeof(DDSURFACEDESC);
 800     ddsd.dwFlags = DDSD_CAPS;
 801     ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
 802
 803     dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 804                                            &ddsd, &p_display, NULL );
 805     if( dxresult != DD_OK )
 806     {
 807         msg_Err( p_vout, "cannot get primary surface (error %li)", dxresult );
 808         return VLC_EGENERIC;
 809     }
 810
 811     dxresult = IDirectDrawSurface_QueryInterface( p_display,
 812                                          &IID_IDirectDrawSurface2,
 813                                          &p_vout->p_sys->p_display );
 814     /* Release the old interface */
 815     IDirectDrawSurface_Release( p_display );
 816     if ( dxresult != DD_OK )
 817     {
 818         msg_Err( p_vout, "cannot query IDirectDrawSurface2 interface "
 819                          "(error %li)", dxresult );
 820         return VLC_EGENERIC;
 821     }
 822
 823     /* The clipper will be used only in non-overlay mode */
 824     DirectXCreateClipper( p_vout );
 825
 826     /* Make sure the colorkey will be painted */
 827     p_vout->p_sys->i_colorkey = 1;
 828     p_vout->p_sys->i_rgb_colorkey =
 829         DirectXFindColorkey( p_vout, &p_vout->p_sys->i_colorkey );
 830
 831     UpdateRects( p_vout, true );
 832
 833     return VLC_SUCCESS;
 834 }
 835
 836 /*****************************************************************************
 837  * DirectXCreateClipper: Create a clipper that will be used when blitting the
 838  *                       RGB surface to the main display.
 839  *****************************************************************************
 840  * This clipper prevents us to modify by mistake anything on the screen
 841  * which doesn't belong to our window. For example when a part of our video
 842  * window is hidden by another window.
 843  *****************************************************************************/
 844 static int DirectXCreateClipper( vout_thread_t *p_vout )
 845 {
 846     HRESULT dxresult;
 847
 848     msg_Dbg( p_vout, "DirectXCreateClipper" );
 849
 850     /* Create the clipper */
 851     dxresult = IDirectDraw2_CreateClipper( p_vout->p_sys->p_ddobject, 0,
 852                                            &p_vout->p_sys->p_clipper, NULL );
 853     if( dxresult != DD_OK )
 854     {
 855         msg_Warn( p_vout, "cannot create clipper (error %li)", dxresult );
 856         goto error;
 857     }
 858
 859     /* Associate the clipper to the window */
 860     dxresult = IDirectDrawClipper_SetHWnd( p_vout->p_sys->p_clipper, 0,
 861                                            p_vout->p_sys->hvideownd );
 862     if( dxresult != DD_OK )
 863     {
 864         msg_Warn( p_vout, "cannot attach clipper to window (error %li)",
 865                           dxresult );
 866         goto error;
 867     }
 868
 869     /* associate the clipper with the surface */
 870     dxresult = IDirectDrawSurface_SetClipper(p_vout->p_sys->p_display,
 871                                              p_vout->p_sys->p_clipper);
 872     if( dxresult != DD_OK )
 873     {
 874         msg_Warn( p_vout, "cannot attach clipper to surface (error %li)",
 875                           dxresult );
 876         goto error;
 877     }
 878
 879     return VLC_SUCCESS;
 880
 881  error:
 882     if( p_vout->p_sys->p_clipper )
 883     {
 884         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
 885     }
 886     p_vout->p_sys->p_clipper = NULL;
 887     return VLC_EGENERIC;
 888 }
 889
 890 /*****************************************************************************
 891  * DirectXCreateSurface: create an YUV overlay or RGB surface for the video.
 892  *****************************************************************************
 893  * The best method of display is with an YUV overlay because the YUV->RGB
 894  * conversion is done in hardware.
 895  * You can also create a plain RGB surface.
 896  * ( Maybe we could also try an RGB overlay surface, which could have hardware
 897  * scaling and which would also be faster in window mode because you don't
 898  * need to do any blitting to the main display...)
 899  *****************************************************************************/
 900 static int DirectXCreateSurface( vout_thread_t *p_vout,
 901                                  LPDIRECTDRAWSURFACE2 *pp_surface_final,
 902                                  int i_chroma, int b_overlay,
 903                                  int i_backbuffers )
 904 {
 905     HRESULT dxresult;
 906     LPDIRECTDRAWSURFACE p_surface;
 907     DDSURFACEDESC ddsd;
 908
 909     /* Create the video surface */
 910     if( b_overlay )
 911     {
 912         /* Now try to create the YUV overlay surface.
 913          * This overlay will be displayed on top of the primary surface.
 914          * A color key is used to determine whether or not the overlay will be
 915          * displayed, ie the overlay will be displayed in place of the primary
 916          * surface wherever the primary surface will have this color.
 917          * The video window has been created with a background of this color so
 918          * the overlay will be only displayed on top of this window */
 919
 920         memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 921         ddsd.dwSize = sizeof(DDSURFACEDESC);
 922         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
 923         ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
 924         ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
 925         ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
 926         ddsd.dwFlags |= (i_backbuffers ? DDSD_BACKBUFFERCOUNT : 0);
 927         ddsd.ddsCaps.dwCaps = DDSCAPS_OVERLAY | DDSCAPS_VIDEOMEMORY;
 928         ddsd.ddsCaps.dwCaps |= (i_backbuffers ? DDSCAPS_COMPLEX | DDSCAPS_FLIP
 929                                 : 0 );
 930         ddsd.dwHeight = p_vout->render.i_height;
 931         ddsd.dwWidth = p_vout->render.i_width;
 932         ddsd.dwBackBufferCount = i_backbuffers;
 933
 934         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 935                                                &ddsd, &p_surface, NULL );
 936         if( dxresult != DD_OK )
 937         {
 938             *pp_surface_final = NULL;
 939             return VLC_EGENERIC;
 940         }
 941     }
 942
 943     if( !b_overlay )
 944     {
 945         bool b_rgb_surface =
 946             ( i_chroma == VLC_CODEC_RGB8 )
 947           || ( i_chroma == VLC_CODEC_RGB15 )
 948            || ( i_chroma == VLC_CODEC_RGB16 )
 949             || ( i_chroma == VLC_CODEC_RGB24 )
 950              || ( i_chroma == VLC_CODEC_RGB32 );
 951
 952         memset( &ddsd, 0, sizeof( DDSURFACEDESC ) );
 953         ddsd.dwSize = sizeof(DDSURFACEDESC);
 954         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
 955         ddsd.dwFlags = DDSD_HEIGHT | DDSD_WIDTH | DDSD_CAPS;
 956         ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
 957         ddsd.dwHeight = p_vout->render.i_height;
 958         ddsd.dwWidth = p_vout->render.i_width;
 959
 960         if( p_vout->p_sys->b_use_sysmem )
 961             ddsd.ddsCaps.dwCaps |= DDSCAPS_SYSTEMMEMORY;
 962         else
 963             ddsd.ddsCaps.dwCaps |= DDSCAPS_VIDEOMEMORY;
 964
 965         if( !b_rgb_surface )
 966         {
 967             ddsd.dwFlags |= DDSD_PIXELFORMAT;
 968             ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
 969             ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
 970         }
 971
 972         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 973                                                &ddsd, &p_surface, NULL );
 974         if( dxresult != DD_OK )
 975         {
 976             *pp_surface_final = NULL;
 977             return VLC_EGENERIC;
 978         }
 979     }
 980
 981     /* Now that the surface is created, try to get a newer DirectX interface */
 982     dxresult = IDirectDrawSurface_QueryInterface( p_surface,
 983                                      &IID_IDirectDrawSurface2,
 984                                      (LPVOID *)pp_surface_final );
 985     IDirectDrawSurface_Release( p_surface );    /* Release the old interface */
 986     if ( dxresult != DD_OK )
 987     {
 988         msg_Err( p_vout, "cannot query IDirectDrawSurface2 interface "
 989                          "(error %li)", dxresult );
 990         *pp_surface_final = NULL;
 991         return VLC_EGENERIC;
 992     }
 993
 994     if( b_overlay )
 995     {
 996         /* Check the overlay is useable as some graphics cards allow creating
 997          * several overlays but only one can be used at one time. */
 998         p_vout->p_sys->p_current_surface = *pp_surface_final;
 999         if( DirectDrawUpdateOverlay( p_vout ) != VLC_SUCCESS )
1000         {
1001             IDirectDrawSurface2_Release( *pp_surface_final );
1002             *pp_surface_final = NULL;
1003             msg_Err( p_vout, "overlay unuseable (might already be in use)" );
1004             return VLC_EGENERIC;
1005         }
1006     }
1007
1008     return VLC_SUCCESS;
1009 }
1010
1011 /*****************************************************************************
1012  * DirectDrawUpdateOverlay: Move or resize overlay surface on video display.
1013  *****************************************************************************
1014  * This function is used to move or resize an overlay surface on the screen.
1015  * Ususally the overlay is moved by the user and thus, by a move or resize
1016  * event (in Manage).
1017  *****************************************************************************/
1018 int DirectDrawUpdateOverlay( vout_thread_t *p_vout )
1019 {
1020     DDOVERLAYFX     ddofx;
1021     DWORD           dwFlags;
1022     HRESULT         dxresult;
1023     RECT            rect_src = p_vout->p_sys->rect_src_clipped;
1024     RECT            rect_dest = p_vout->p_sys->rect_dest_clipped;
1025
1026     if( !p_vout->p_sys->b_using_overlay ) return VLC_EGENERIC;
1027
1028     if( p_vout->p_sys->b_wallpaper )
1029     {
1030         unsigned i_x, i_y, i_width, i_height;
1031
1032         rect_src.left = p_vout->fmt_out.i_x_offset;
1033         rect_src.top = p_vout->fmt_out.i_y_offset;
1034         rect_src.right = rect_src.left + p_vout->fmt_out.i_visible_width;
1035         rect_src.bottom = rect_src.top + p_vout->fmt_out.i_visible_height;
1036
1037         rect_dest = p_vout->p_sys->rect_display;
1038         vout_PlacePicture( p_vout, rect_dest.right, rect_dest.bottom,
1039                            &i_x, &i_y, &i_width, &i_height );
1040
1041         rect_dest.left += i_x;
1042         rect_dest.right = rect_dest.left + i_width;
1043         rect_dest.top += i_y;
1044         rect_dest.bottom = rect_dest.top + i_height;
1045     }
1046
1047     vlc_mutex_lock( &p_vout->p_sys->lock );
1048     if( p_vout->p_sys->p_current_surface == NULL )
1049     {
1050         vlc_mutex_unlock( &p_vout->p_sys->lock );
1051         return VLC_EGENERIC;
1052     }
1053
1054     /* The new window dimensions should already have been computed by the
1055      * caller of this function */
1056
1057     /* Position and show the overlay */
1058     memset(&ddofx, 0, sizeof(DDOVERLAYFX));
1059     ddofx.dwSize = sizeof(DDOVERLAYFX);
1060     ddofx.dckDestColorkey.dwColorSpaceLowValue = p_vout->p_sys->i_colorkey;
1061     ddofx.dckDestColorkey.dwColorSpaceHighValue = p_vout->p_sys->i_colorkey;
1062
1063     dwFlags = DDOVER_SHOW | DDOVER_KEYDESTOVERRIDE;
1064
1065     dxresult = IDirectDrawSurface2_UpdateOverlay(
1066                    p_vout->p_sys->p_current_surface,
1067                    &rect_src, p_vout->p_sys->p_display, &rect_dest,
1068                    dwFlags, &ddofx );
1069
1070     vlc_mutex_unlock( &p_vout->p_sys->lock );
1071
1072     if(dxresult != DD_OK)
1073     {
1074         msg_Warn( p_vout, "DirectDrawUpdateOverlay cannot move/resize overlay" );
1075         return VLC_EGENERIC;
1076     }
1077
1078     return VLC_SUCCESS;
1079 }
1080
1081 /*****************************************************************************
1082  * DirectXCloseDDraw: Release the DDraw object allocated by DirectXInitDDraw
1083  *****************************************************************************
1084  * This function returns all resources allocated by DirectXInitDDraw.
1085  *****************************************************************************/
1086 static void DirectXCloseDDraw( vout_thread_t *p_vout )
1087 {
1088     msg_Dbg( p_vout, "DirectXCloseDDraw" );
1089     if( p_vout->p_sys->p_ddobject != NULL )
1090     {
1091         IDirectDraw2_Release(p_vout->p_sys->p_ddobject);
1092         p_vout->p_sys->p_ddobject = NULL;
1093     }
1094
1095     if( p_vout->p_sys->hddraw_dll != NULL )
1096     {
1097         FreeLibrary( p_vout->p_sys->hddraw_dll );
1098         p_vout->p_sys->hddraw_dll = NULL;
1099     }
1100
1101     free( p_vout->p_sys->p_display_driver );
1102     p_vout->p_sys->p_display_driver = NULL;
1103
1104     p_vout->p_sys->hmonitor = NULL;
1105 }
1106
1107 /*****************************************************************************
1108  * DirectXCloseDisplay: close and reset the DirectX display device
1109  *****************************************************************************
1110  * This function returns all resources allocated by DirectXCreateDisplay.
1111  *****************************************************************************/
1112 static void DirectXCloseDisplay( vout_thread_t *p_vout )
1113 {
1114     msg_Dbg( p_vout, "DirectXCloseDisplay" );
1115
1116     if( p_vout->p_sys->p_clipper != NULL )
1117     {
1118         msg_Dbg( p_vout, "DirectXCloseDisplay clipper" );
1119         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
1120         p_vout->p_sys->p_clipper = NULL;
1121     }
1122
1123     if( p_vout->p_sys->p_display != NULL )
1124     {
1125         msg_Dbg( p_vout, "DirectXCloseDisplay display" );
1126         IDirectDrawSurface2_Release( p_vout->p_sys->p_display );
1127         p_vout->p_sys->p_display = NULL;
1128     }
1129 }
1130
1131 /*****************************************************************************
1132  * DirectXCloseSurface: close the YUV overlay or RGB surface.
1133  *****************************************************************************
1134  * This function returns all resources allocated for the surface.
1135  *****************************************************************************/
1136 static void DirectXCloseSurface( vout_thread_t *p_vout,
1137                                  LPDIRECTDRAWSURFACE2 p_surface )
1138 {
1139     msg_Dbg( p_vout, "DirectXCloseSurface" );
1140     if( p_surface != NULL )
1141     {
1142         IDirectDrawSurface2_Release( p_surface );
1143     }
1144 }
1145
1146 /*****************************************************************************
1147  * NewPictureVec: allocate a picture
1148  * FIXME? make it work for i_num_pic pictures...
1149  *****************************************************************************
1150  * Returns 0 on success, -1 otherwise
1151  *****************************************************************************/
1152 static int NewPictureVec( vout_thread_t *p_vout, picture_t *p_pic )
1153 {
1154     int i;
1155     int i_ret = VLC_SUCCESS;
1156     LPDIRECTDRAWSURFACE2 p_surface;
1157
1158     msg_Dbg( p_vout, "NewPictureVec overlay:%s chroma:%.4s",
1159              p_vout->p_sys->b_using_overlay ? "yes" : "no",
1160              (char *)&p_vout->output.i_chroma );
1161
1162     I_OUTPUTPICTURES = 0;
1163
1164     /* First we try to use an YUV overlay surface.
1165      * The overlay surface that we create won't be used to decode directly
1166      * into it because accessing video memory directly is way to slow (remember
1167      * that pictures are decoded macroblock per macroblock). Instead the video
1168      * will be decoded in picture buffers in system memory which will then be
1169      * memcpy() to the overlay surface. */
1170     if( p_vout->p_sys->b_using_overlay )
1171     {
1172         /* Triple buffering rocks! it doesn't have any processing overhead
1173          * (you don't have to wait for the vsync) and provides for a very nice
1174          * video quality (no tearing). */
1175         if( p_vout->p_sys->b_3buf_overlay )
1176             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1177                                           p_vout->output.i_chroma,
1178                                           p_vout->p_sys->b_using_overlay,
1179                                           2 /* number of backbuffers */ );
1180
1181         if( !p_vout->p_sys->b_3buf_overlay || i_ret != VLC_SUCCESS )
1182         {
1183             /* Try to reduce the number of backbuffers */
1184             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1185                                           p_vout->output.i_chroma,
1186                                           p_vout->p_sys->b_using_overlay,
1187                                           0 /* number of backbuffers */ );
1188         }
1189
1190         if( i_ret == VLC_SUCCESS )
1191         {
1192             DDSCAPS dds_caps;
1193             picture_t front_pic;
1194             picture_sys_t front_pic_sys;
1195             front_pic.p_sys = &front_pic_sys;
1196
1197             /* Allocate internal structure */
1198             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1199             if( p_pic[0].p_sys == NULL )
1200             {
1201                 DirectXCloseSurface( p_vout, p_surface );
1202                 return VLC_ENOMEM;
1203             }
1204
1205             /* set front buffer */
1206             p_pic[0].p_sys->p_front_surface = p_surface;
1207
1208             /* Get the back buffer */
1209             memset( &dds_caps, 0, sizeof( DDSCAPS ) );
1210             dds_caps.dwCaps = DDSCAPS_BACKBUFFER;
1211             if( DD_OK != IDirectDrawSurface2_GetAttachedSurface(
1212                                                 p_surface, &dds_caps,
1213                                                 &p_pic[0].p_sys->p_surface ) )
1214             {
1215                 msg_Warn( p_vout, "NewPictureVec could not get back buffer" );
1216                 /* front buffer is the same as back buffer */
1217                 p_pic[0].p_sys->p_surface = p_surface;
1218             }
1219
1220
1221             p_vout->p_sys->p_current_surface = front_pic.p_sys->p_surface =
1222                 p_pic[0].p_sys->p_front_surface;
1223
1224             /* Reset the front buffer memory */
1225             if( DirectXLockSurface( p_vout, &front_pic ) == VLC_SUCCESS )
1226             {
1227                 int i,j;
1228                 for( i = 0; i < front_pic.i_planes; i++ )
1229                     for( j = 0; j < front_pic.p[i].i_visible_lines; j++)
1230                         memset( front_pic.p[i].p_pixels + j *
1231                                 front_pic.p[i].i_pitch, 127,
1232                                 front_pic.p[i].i_visible_pitch );
1233
1234                 DirectXUnlockSurface( p_vout, &front_pic );
1235             }
1236
1237             DirectDrawUpdateOverlay( p_vout );
1238             I_OUTPUTPICTURES = 1;
1239             msg_Dbg( p_vout, "YUV overlay created successfully" );
1240         }
1241     }
1242
1243     /* As we can't have an overlay, we'll try to create a plain offscreen
1244      * surface. This surface will reside in video memory because there's a
1245      * better chance then that we'll be able to use some kind of hardware
1246      * acceleration like rescaling, blitting or YUV->RGB conversions.
1247      * We then only need to blit this surface onto the main display when we
1248      * want to display it */
1249     if( !p_vout->p_sys->b_using_overlay )
1250     {
1251         if( p_vout->p_sys->b_hw_yuv )
1252         {
1253             DWORD i_codes;
1254             DWORD *pi_codes;
1255             bool b_result = false;
1256
1257             /* Check if the chroma is supported first. This is required
1258              * because a few buggy drivers don't mind creating the surface
1259              * even if they don't know about the chroma. */
1260             if( IDirectDraw2_GetFourCCCodes( p_vout->p_sys->p_ddobject,
1261                                              &i_codes, NULL ) == DD_OK )
1262             {
1263                 pi_codes = malloc( i_codes * sizeof(DWORD) );
1264                 if( pi_codes && IDirectDraw2_GetFourCCCodes(
1265                     p_vout->p_sys->p_ddobject, &i_codes, pi_codes ) == DD_OK )
1266                 {
1267                     for( i = 0; i < (int)i_codes; i++ )
1268                     {
1269                         if( p_vout->output.i_chroma == pi_codes[i] )
1270                         {
1271                             b_result = true;
1272                             break;
1273                         }
1274                     }
1275                 }
1276                 free( pi_codes );
1277             }
1278
1279             if( b_result )
1280                 i_ret = DirectXCreateSurface( p_vout, &p_surface,
1281                                               p_vout->output.i_chroma,
1282                                               0 /* no overlay */,
1283                                               0 /* no back buffers */ );
1284             else
1285                 p_vout->p_sys->b_hw_yuv = false;
1286         }
1287
1288         if( i_ret || !p_vout->p_sys->b_hw_yuv )
1289         {
1290             /* Our last choice is to use a plain RGB surface */
1291             DDPIXELFORMAT ddpfPixelFormat;
1292
1293             ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1294             IDirectDrawSurface2_GetPixelFormat( p_vout->p_sys->p_display,
1295                                                 &ddpfPixelFormat );
1296
1297             if( ddpfPixelFormat.dwFlags & DDPF_RGB )
1298             {
1299                 switch( ddpfPixelFormat.dwRGBBitCount )
1300                 {
1301                 case 8:
1302                     p_vout->output.i_chroma = VLC_CODEC_RGB8;
1303                     p_vout->output.pf_setpalette = SetPalette;
1304                     break;
1305                 case 15:
1306                     p_vout->output.i_chroma = VLC_CODEC_RGB15;
1307                     break;
1308                 case 16:
1309                     p_vout->output.i_chroma = VLC_CODEC_RGB16;
1310                     break;
1311                 case 24:
1312                     p_vout->output.i_chroma = VLC_CODEC_RGB24;
1313                     break;
1314                 case 32:
1315                     p_vout->output.i_chroma = VLC_CODEC_RGB32;
1316                     break;
1317                 default:
1318                     msg_Err( p_vout, "unknown screen depth" );
1319                     return VLC_EGENERIC;
1320                 }
1321                 p_vout->output.i_rmask = ddpfPixelFormat.dwRBitMask;
1322                 p_vout->output.i_gmask = ddpfPixelFormat.dwGBitMask;
1323                 p_vout->output.i_bmask = ddpfPixelFormat.dwBBitMask;
1324             }
1325
1326             p_vout->p_sys->b_hw_yuv = 0;
1327
1328             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1329                                           p_vout->output.i_chroma,
1330                                           0 /* no overlay */,
1331                                           0 /* no back buffers */ );
1332
1333             if( i_ret && !p_vout->p_sys->b_use_sysmem )
1334             {
1335                 /* Give it a last try with b_use_sysmem enabled */
1336                 p_vout->p_sys->b_use_sysmem = 1;
1337
1338                 i_ret = DirectXCreateSurface( p_vout, &p_surface,
1339                                               p_vout->output.i_chroma,
1340                                               0 /* no overlay */,
1341                                               0 /* no back buffers */ );
1342             }
1343         }
1344
1345         if( i_ret == VLC_SUCCESS )
1346         {
1347             /* Allocate internal structure */
1348             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1349             if( p_pic[0].p_sys == NULL )
1350             {
1351                 DirectXCloseSurface( p_vout, p_surface );
1352                 return VLC_ENOMEM;
1353             }
1354
1355             p_pic[0].p_sys->p_surface = p_pic[0].p_sys->p_front_surface
1356                 = p_surface;
1357
1358             I_OUTPUTPICTURES = 1;
1359
1360             msg_Dbg( p_vout, "created plain surface of chroma:%.4s",
1361                      (char *)&p_vout->output.i_chroma );
1362         }
1363     }
1364
1365
1366     /* Now that we've got all our direct-buffers, we can finish filling in the
1367      * picture_t structures */
1368     for( i = 0; i < I_OUTPUTPICTURES; i++ )
1369     {
1370         p_pic[i].i_status = DESTROYED_PICTURE;
1371         p_pic[i].i_type   = DIRECT_PICTURE;
1372         p_pic[i].b_slow   = true;
1373         p_pic[i].pf_lock  = DirectXLockSurface;
1374         p_pic[i].pf_unlock = DirectXUnlockSurface;
1375         PP_OUTPUTPICTURE[i] = &p_pic[i];
1376
1377         if( DirectXLockSurface( p_vout, &p_pic[i] ) != VLC_SUCCESS )
1378         {
1379             /* AAARRGG */
1380             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1381             I_OUTPUTPICTURES = 0;
1382             msg_Err( p_vout, "cannot lock surface" );
1383             return VLC_EGENERIC;
1384         }
1385         DirectXUnlockSurface( p_vout, &p_pic[i] );
1386     }
1387
1388     msg_Dbg( p_vout, "End NewPictureVec (%s)",
1389              I_OUTPUTPICTURES ? "succeeded" : "failed" );
1390
1391     return VLC_SUCCESS;
1392 }
1393
1394 /*****************************************************************************
1395  * FreePicture: destroy a picture vector allocated with NewPictureVec
1396  *****************************************************************************
1397  *
1398  *****************************************************************************/
1399 static void FreePictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1400                             int i_num_pics )
1401 {
1402     int i;
1403
1404     vlc_mutex_lock( &p_vout->p_sys->lock );
1405     p_vout->p_sys->p_current_surface = 0;
1406     vlc_mutex_unlock( &p_vout->p_sys->lock );
1407
1408     for( i = 0; i < i_num_pics; i++ )
1409     {
1410         DirectXCloseSurface( p_vout, p_pic[i].p_sys->p_front_surface );
1411
1412         for( i = 0; i < i_num_pics; i++ )
1413         {
1414             free( p_pic[i].p_sys );
1415         }
1416     }
1417 }
1418
1419 /*****************************************************************************
1420  * UpdatePictureStruct: updates the internal data in the picture_t structure
1421  *****************************************************************************
1422  * This will setup stuff for use by the video_output thread
1423  *****************************************************************************/
1424 static int UpdatePictureStruct( vout_thread_t *p_vout, picture_t *p_pic )
1425 {
1426     switch( p_vout->output.i_chroma )
1427     {
1428         case VLC_CODEC_RGB8:
1429         case VLC_CODEC_RGB15:
1430         case VLC_CODEC_RGB16:
1431         case VLC_CODEC_RGB24:
1432         case VLC_CODEC_RGB32:
1433             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1434             p_pic->p->i_lines = p_vout->output.i_height;
1435             p_pic->p->i_visible_lines = p_vout->output.i_height;
1436             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1437             switch( p_vout->output.i_chroma )
1438             {
1439                 case VLC_CODEC_RGB8:
1440                     p_pic->p->i_pixel_pitch = 1;
1441                     break;
1442                 case VLC_CODEC_RGB15:
1443                 case VLC_CODEC_RGB16:
1444                     p_pic->p->i_pixel_pitch = 2;
1445                     break;
1446                 case VLC_CODEC_RGB24:
1447                     p_pic->p->i_pixel_pitch = 3;
1448                     break;
1449                 case VLC_CODEC_RGB32:
1450                     p_pic->p->i_pixel_pitch = 4;
1451                     break;
1452                 default:
1453                     return VLC_EGENERIC;
1454             }
1455             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1456               p_pic->p->i_pixel_pitch;
1457             p_pic->i_planes = 1;
1458             break;
1459
1460         case VLC_CODEC_YV12:
1461
1462             /* U and V inverted compared to I420
1463              * Fixme: this should be handled by the vout core */
1464             /* could this be right? */
1465             p_vout->output.i_chroma = VLC_CODEC_I420;
1466
1467             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1468             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1469             p_pic->p[Y_PLANE].i_visible_lines = p_vout->output.i_height;
1470             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1471             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1472             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1473               p_pic->p[Y_PLANE].i_pixel_pitch;
1474
1475             p_pic->V_PIXELS =  p_pic->Y_PIXELS
1476               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1477             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1478             p_pic->p[V_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1479             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1480             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1481             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1482               p_pic->p[V_PLANE].i_pixel_pitch;
1483
1484             p_pic->U_PIXELS = p_pic->V_PIXELS
1485               + p_pic->p[V_PLANE].i_lines * p_pic->p[V_PLANE].i_pitch;
1486             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1487             p_pic->p[U_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1488             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1489             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1490             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1491               p_pic->p[U_PLANE].i_pixel_pitch;
1492
1493             p_pic->i_planes = 3;
1494             break;
1495
1496         case VLC_CODEC_I420:
1497
1498             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1499             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1500             p_pic->p[Y_PLANE].i_visible_lines = p_vout->output.i_height;
1501             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1502             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1503             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1504               p_pic->p[Y_PLANE].i_pixel_pitch;
1505
1506             p_pic->U_PIXELS = p_pic->Y_PIXELS
1507               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1508             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1509             p_pic->p[U_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1510             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1511             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1512             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1513               p_pic->p[U_PLANE].i_pixel_pitch;
1514
1515             p_pic->V_PIXELS =  p_pic->U_PIXELS
1516               + p_pic->p[U_PLANE].i_lines * p_pic->p[U_PLANE].i_pitch;
1517             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1518             p_pic->p[V_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1519             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1520             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1521             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1522               p_pic->p[V_PLANE].i_pixel_pitch;
1523
1524             p_pic->i_planes = 3;
1525             break;
1526
1527         case VLC_CODEC_UYVY:
1528         case VLC_CODEC_YUYV:
1529
1530             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1531             p_pic->p->i_lines = p_vout->output.i_height;
1532             p_pic->p->i_visible_lines = p_vout->output.i_height;
1533             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1534             p_pic->p->i_pixel_pitch = 2;
1535             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1536               p_pic->p->i_pixel_pitch;
1537
1538             p_pic->i_planes = 1;
1539             break;
1540
1541         default:
1542             /* Unknown chroma, tell the guy to get lost */
1543             msg_Err( p_vout, "never heard of chroma 0x%.8x (%4.4s)",
1544                      p_vout->output.i_chroma,
1545                      (char*)&p_vout->output.i_chroma );
1546             return VLC_EGENERIC;
1547     }
1548
1549     return VLC_SUCCESS;
1550 }
1551
1552 /*****************************************************************************
1553  * DirectXGetDDrawCaps: Probe the capabilities of the hardware
1554  *****************************************************************************
1555  * It is nice to know which features are supported by the hardware so we can
1556  * find ways to optimize our rendering.
1557  *****************************************************************************/
1558 static void DirectXGetDDrawCaps( vout_thread_t *p_vout )
1559 {
1560     DDCAPS ddcaps;
1561     HRESULT dxresult;
1562
1563     /* This is just an indication of whether or not we'll support overlay,
1564      * but with this test we don't know if we support YUV overlay */
1565     memset( &ddcaps, 0, sizeof( DDCAPS ));
1566     ddcaps.dwSize = sizeof(DDCAPS);
1567     dxresult = IDirectDraw2_GetCaps( p_vout->p_sys->p_ddobject,
1568                                      &ddcaps, NULL );
1569     if(dxresult != DD_OK )
1570     {
1571         msg_Warn( p_vout, "cannot get caps" );
1572     }
1573     else
1574     {
1575         bool bHasOverlay, bHasOverlayFourCC, bCanDeinterlace,
1576              bHasColorKey, bCanStretch, bCanBltFourcc,
1577              bAlignBoundarySrc, bAlignBoundaryDest,
1578              bAlignSizeSrc, bAlignSizeDest;
1579
1580         /* Determine if the hardware supports overlay surfaces */
1581         bHasOverlay = (ddcaps.dwCaps & DDCAPS_OVERLAY) ? 1 : 0;
1582         /* Determine if the hardware supports overlay surfaces */
1583         bHasOverlayFourCC = (ddcaps.dwCaps & DDCAPS_OVERLAYFOURCC) ? 1 : 0;
1584         /* Determine if the hardware supports overlay deinterlacing */
1585         bCanDeinterlace = (ddcaps.dwCaps & DDCAPS2_CANFLIPODDEVEN) ? 1 : 0;
1586         /* Determine if the hardware supports colorkeying */
1587         bHasColorKey = (ddcaps.dwCaps & DDCAPS_COLORKEY) ? 1 : 0;
1588         /* Determine if the hardware supports scaling of the overlay surface */
1589         bCanStretch = (ddcaps.dwCaps & DDCAPS_OVERLAYSTRETCH) ? 1 : 0;
1590         /* Determine if the hardware supports color conversion during a blit */
1591         bCanBltFourcc = (ddcaps.dwCaps & DDCAPS_BLTFOURCC) ? 1 : 0;
1592         /* Determine overlay source boundary alignment */
1593         bAlignBoundarySrc = (ddcaps.dwCaps & DDCAPS_ALIGNBOUNDARYSRC) ? 1 : 0;
1594         /* Determine overlay destination boundary alignment */
1595         bAlignBoundaryDest = (ddcaps.dwCaps & DDCAPS_ALIGNBOUNDARYDEST) ? 1:0;
1596         /* Determine overlay destination size alignment */
1597         bAlignSizeSrc = (ddcaps.dwCaps & DDCAPS_ALIGNSIZESRC) ? 1 : 0;
1598         /* Determine overlay destination size alignment */
1599         bAlignSizeDest = (ddcaps.dwCaps & DDCAPS_ALIGNSIZEDEST) ? 1 : 0;
1600
1601         msg_Dbg( p_vout, "DirectDraw Capabilities: overlay=%i yuvoverlay=%i "
1602                          "can_deinterlace_overlay=%i colorkey=%i stretch=%i "
1603                          "bltfourcc=%i",
1604                          bHasOverlay, bHasOverlayFourCC, bCanDeinterlace,
1605                          bHasColorKey, bCanStretch, bCanBltFourcc );
1606
1607         if( bAlignBoundarySrc || bAlignBoundaryDest ||
1608             bAlignSizeSrc || bAlignSizeDest )
1609         {
1610             if( bAlignBoundarySrc ) p_vout->p_sys->i_align_src_boundary =
1611                 ddcaps.dwAlignBoundarySrc;
1612             if( bAlignBoundaryDest ) p_vout->p_sys->i_align_dest_boundary =
1613                 ddcaps.dwAlignBoundaryDest;
1614             if( bAlignSizeDest ) p_vout->p_sys->i_align_src_size =
1615                 ddcaps.dwAlignSizeSrc;
1616             if( bAlignSizeDest ) p_vout->p_sys->i_align_dest_size =
1617                 ddcaps.dwAlignSizeDest;
1618
1619             msg_Dbg( p_vout, "align_boundary_src=%i,%i "
1620                      "align_boundary_dest=%i,%i "
1621                      "align_size_src=%i,%i align_size_dest=%i,%i",
1622                      bAlignBoundarySrc, p_vout->p_sys->i_align_src_boundary,
1623                      bAlignBoundaryDest, p_vout->p_sys->i_align_dest_boundary,
1624                      bAlignSizeSrc, p_vout->p_sys->i_align_src_size,
1625                      bAlignSizeDest, p_vout->p_sys->i_align_dest_size );
1626         }
1627
1628         /* Don't ask for troubles */
1629         if( !bCanBltFourcc ) p_vout->p_sys->b_hw_yuv = FALSE;
1630     }
1631 }
1632
1633 /*****************************************************************************
1634  * DirectXLockSurface: Lock surface and get picture data pointer
1635  *****************************************************************************
1636  * This function locks a surface and get the surface descriptor which amongst
1637  * other things has the pointer to the picture data.
1638  *****************************************************************************/
1639 static int DirectXLockSurface( vout_thread_t *p_vout, picture_t *p_pic )
1640 {
1641     HRESULT dxresult;
1642
1643     /* Lock the surface to get a valid pointer to the picture buffer */
1644     memset( &p_pic->p_sys->ddsd, 0, sizeof( DDSURFACEDESC ));
1645     p_pic->p_sys->ddsd.dwSize = sizeof(DDSURFACEDESC);
1646     dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface,
1647                                          NULL, &p_pic->p_sys->ddsd,
1648                                          DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1649                                          NULL );
1650     if( dxresult != DD_OK )
1651     {
1652         if( dxresult == DDERR_INVALIDPARAMS )
1653         {
1654             /* DirectX 3 doesn't support the DDLOCK_NOSYSLOCK flag, resulting
1655              * in an invalid params error */
1656             dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1657                                              &p_pic->p_sys->ddsd,
1658                                              DDLOCK_WAIT, NULL);
1659         }
1660         if( dxresult == DDERR_SURFACELOST )
1661         {
1662             /* Your surface can be lost so be sure
1663              * to check this and restore it if needed */
1664
1665             /* When using overlays with back-buffers, we need to restore
1666              * the front buffer so the back-buffers get restored as well. */
1667             if( p_vout->p_sys->b_using_overlay  )
1668                 IDirectDrawSurface2_Restore( p_pic->p_sys->p_front_surface );
1669             else
1670                 IDirectDrawSurface2_Restore( p_pic->p_sys->p_surface );
1671
1672             dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1673                                                  &p_pic->p_sys->ddsd,
1674                                                  DDLOCK_WAIT, NULL);
1675 #ifndef NDEBUG
1676             if( dxresult == DDERR_SURFACELOST )
1677                 msg_Dbg( p_vout, "DirectXLockSurface: DDERR_SURFACELOST" );
1678 #endif
1679         }
1680         if( dxresult != DD_OK )
1681         {
1682             return VLC_EGENERIC;
1683         }
1684     }
1685
1686     /* Now we have a pointer to the surface memory, we can update our picture
1687      * structure. */
1688     if( UpdatePictureStruct( p_vout, p_pic )
1689         != VLC_SUCCESS )
1690     {
1691         DirectXUnlockSurface( p_vout, p_pic );
1692         return VLC_EGENERIC;
1693     }
1694     else
1695         return VLC_SUCCESS;
1696 }
1697
1698 /*****************************************************************************
1699  * DirectXUnlockSurface: Unlock a surface locked by DirectXLockSurface().
1700  *****************************************************************************/
1701 static int DirectXUnlockSurface( vout_thread_t *p_vout, picture_t *p_pic )
1702 {
1703     VLC_UNUSED( p_vout );
1704
1705     /* Unlock the Surface */
1706     if( IDirectDrawSurface2_Unlock( p_pic->p_sys->p_surface, NULL ) == DD_OK )
1707         return VLC_SUCCESS;
1708     else
1709         return VLC_EGENERIC;
1710 }
1711
1712 /*****************************************************************************
1713  * DirectXFindColorkey: Finds out the 32bits RGB pixel value of the colorkey
1714  *****************************************************************************/
1715 static DWORD DirectXFindColorkey( vout_thread_t *p_vout, uint32_t *pi_color )
1716 {
1717     DDSURFACEDESC ddsd;
1718     HRESULT dxresult;
1719     COLORREF i_rgb = 0;
1720     uint32_t i_pixel_backup;
1721     HDC hdc;
1722
1723     ddsd.dwSize = sizeof(ddsd);
1724     dxresult = IDirectDrawSurface2_Lock( p_vout->p_sys->p_display, NULL,
1725                                          &ddsd, DDLOCK_WAIT, NULL );
1726     if( dxresult != DD_OK ) return 0;
1727
1728     i_pixel_backup = *(uint32_t *)ddsd.lpSurface;
1729
1730     switch( ddsd.ddpfPixelFormat.dwRGBBitCount )
1731     {
1732     case 4:
1733         *(uint8_t *)ddsd.lpSurface = *pi_color | (*pi_color << 4);
1734         break;
1735     case 8:
1736         *(uint8_t *)ddsd.lpSurface = *pi_color;
1737         break;
1738     case 15:
1739     case 16:
1740         *(uint16_t *)ddsd.lpSurface = *pi_color;
1741         break;
1742     case 24:
1743         /* Seems to be problematic so we'll just put black as the colorkey */
1744         *pi_color = 0;
1745     default:
1746         *(uint32_t *)ddsd.lpSurface = *pi_color;
1747         break;
1748     }
1749
1750     IDirectDrawSurface2_Unlock( p_vout->p_sys->p_display, NULL );
1751
1752     if( IDirectDrawSurface2_GetDC( p_vout->p_sys->p_display, &hdc ) == DD_OK )
1753     {
1754         i_rgb = GetPixel( hdc, 0, 0 );
1755         IDirectDrawSurface2_ReleaseDC( p_vout->p_sys->p_display, hdc );
1756     }
1757
1758     ddsd.dwSize = sizeof(ddsd);
1759     dxresult = IDirectDrawSurface2_Lock( p_vout->p_sys->p_display, NULL,
1760                                          &ddsd, DDLOCK_WAIT, NULL );
1761     if( dxresult != DD_OK ) return i_rgb;
1762
1763     *(uint32_t *)ddsd.lpSurface = i_pixel_backup;
1764
1765     IDirectDrawSurface2_Unlock( p_vout->p_sys->p_display, NULL );
1766
1767     return i_rgb;
1768 }
1769
1770 /*****************************************************************************
1771  * A few toolbox functions
1772  *****************************************************************************/
1773 void SwitchWallpaperMode( vout_thread_t *p_vout, bool b_on )
1774 {
1775     HWND hwnd;
1776
1777     if( p_vout->p_sys->b_wallpaper == b_on ) return; /* Nothing to do */
1778
1779     hwnd = FindWindow( _T("Progman"), NULL );
1780     if( hwnd ) hwnd = FindWindowEx( hwnd, NULL, _T("SHELLDLL_DefView"), NULL );
1781     if( hwnd ) hwnd = FindWindowEx( hwnd, NULL, _T("SysListView32"), NULL );
1782     if( !hwnd )
1783     {
1784         msg_Warn( p_vout, "couldn't find \"SysListView32\" window, "
1785                   "wallpaper mode not supported" );
1786         return;
1787     }
1788
1789     p_vout->p_sys->b_wallpaper = b_on;
1790
1791     msg_Dbg( p_vout, "wallpaper mode %s", b_on ? "enabled" : "disabled" );
1792
1793     if( p_vout->p_sys->b_wallpaper )
1794     {
1795         p_vout->p_sys->color_bkg = ListView_GetBkColor( hwnd );
1796         p_vout->p_sys->color_bkgtxt = ListView_GetTextBkColor( hwnd );
1797
1798         ListView_SetBkColor( hwnd, p_vout->p_sys->i_rgb_colorkey );
1799         ListView_SetTextBkColor( hwnd, p_vout->p_sys->i_rgb_colorkey );
1800     }
1801     else if( hwnd )
1802     {
1803         ListView_SetBkColor( hwnd, p_vout->p_sys->color_bkg );
1804         ListView_SetTextBkColor( hwnd, p_vout->p_sys->color_bkgtxt );
1805     }
1806
1807     /* Update desktop */
1808     InvalidateRect( hwnd, NULL, TRUE );
1809     UpdateWindow( hwnd );
1810 }
1811
1812 /*****************************************************************************
1813  * config variable callback
1814  *****************************************************************************/
1815 BOOL WINAPI DirectXEnumCallback2( GUID* p_guid, LPTSTR psz_desc,
1816                                   LPTSTR psz_drivername, VOID* p_context,
1817                                   HMONITOR hmon )
1818 {
1819     VLC_UNUSED( p_guid ); VLC_UNUSED( psz_desc ); VLC_UNUSED( hmon );
1820
1821     module_config_t *p_item = (module_config_t *)p_context;
1822
1823     p_item->ppsz_list = realloc_or_free( p_item->ppsz_list,
1824                           (p_item->i_list+2) * sizeof(char *) );
1825     assert( p_item->ppsz_list );
1826     p_item->ppsz_list_text = realloc_or_free( p_item->ppsz_list_text,
1827                           (p_item->i_list+2) * sizeof(char *) );
1828     assert( p_item->ppsz_list_text );
1829
1830     p_item->ppsz_list[p_item->i_list] = strdup( psz_drivername );
1831     p_item->ppsz_list_text[p_item->i_list] = NULL;
1832     p_item->i_list++;
1833     p_item->ppsz_list[p_item->i_list] = NULL;
1834     p_item->ppsz_list_text[p_item->i_list] = NULL;
1835
1836     return TRUE; /* Keep enumerating */
1837 }
1838
1839 static int FindDevicesCallback( vlc_object_t *p_this, char const *psz_name,
1840                                vlc_value_t newval, vlc_value_t oldval, void *d)
1841 {
1842     VLC_UNUSED( newval ); VLC_UNUSED( oldval ); VLC_UNUSED( d );
1843
1844     HRESULT (WINAPI *OurDirectDrawEnumerateEx)( LPDDENUMCALLBACKEXA, LPVOID,
1845                                                 DWORD );
1846     HINSTANCE hddraw_dll;
1847
1848     module_config_t *p_item;
1849     int i;
1850
1851     p_item = config_FindConfig( p_this, psz_name );
1852     if( !p_item ) return VLC_SUCCESS;
1853
1854     /* Clear-up the current list */
1855     if( p_item->i_list )
1856     {
1857         /* Keep the first entry */
1858         for( i = 1; i < p_item->i_list; i++ )
1859         {
1860             free( p_item->ppsz_list[i] );
1861             free( p_item->ppsz_list_text[i] );
1862         }
1863         /* TODO: Remove when no more needed */
1864         p_item->ppsz_list[i] = NULL;
1865         p_item->ppsz_list_text[i] = NULL;
1866     }
1867     p_item->i_list = 1;
1868
1869     /* Load direct draw DLL */
1870     hddraw_dll = LoadLibrary(_T("DDRAW.DLL"));
1871     if( hddraw_dll == NULL ) return VLC_SUCCESS;
1872
1873     OurDirectDrawEnumerateEx =
1874       (void *)GetProcAddress( hddraw_dll, _T("DirectDrawEnumerateExW") );
1875
1876     if( OurDirectDrawEnumerateEx )
1877     {
1878         /* Enumerate displays */
1879         OurDirectDrawEnumerateEx( DirectXEnumCallback2, p_item,
1880                                   DDENUM_ATTACHEDSECONDARYDEVICES );
1881     }
1882
1883     FreeLibrary( hddraw_dll );
1884
1885     /* Signal change to the interface */
1886     p_item->b_dirty = true;
1887
1888     return VLC_SUCCESS;
1889 }
1890
1891 static int WallpaperCallback( vlc_object_t *p_this, char const *psz_cmd,
1892                               vlc_value_t oldval, vlc_value_t newval,
1893                               void *p_data )
1894 {
1895     VLC_UNUSED( psz_cmd ); VLC_UNUSED( oldval ); VLC_UNUSED( p_data );
1896     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1897
1898     if( (newval.b_bool && !p_vout->p_sys->b_wallpaper) ||
1899         (!newval.b_bool && p_vout->p_sys->b_wallpaper) )
1900     {
1901         playlist_t *p_playlist = pl_Hold( p_vout );
1902
1903         if( p_playlist )
1904         {
1905             /* Modify playlist as well because the vout might have to be
1906              * restarted */
1907             var_Create( p_playlist, "directx-wallpaper", VLC_VAR_BOOL );
1908             var_Set( p_playlist, "directx-wallpaper", newval );
1909             pl_Release( p_vout );
1910         }
1911
1912         p_vout->p_sys->i_changes |= DX_WALLPAPER_CHANGE;
1913     }
1914
1915     return VLC_SUCCESS;
1916 }
1917
1918 /*****************************************************************************
1919  * SetPalette: sets an 8 bpp palette
1920  *****************************************************************************/
1921 static void SetPalette( vout_thread_t *p_vout,
1922                         uint16_t *red, uint16_t *green, uint16_t *blue )
1923 {
1924     VLC_UNUSED( red ); VLC_UNUSED( green );VLC_UNUSED( blue );
1925     msg_Err( p_vout, "FIXME: SetPalette unimplemented" );
1926 }