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