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 <vlc_common.h>
  42 #include <vlc_plugin.h>
  43 #include <vlc_vout.h>
  44 #include <vlc_playlist.h>   /* needed for wallpaper */
  45
  46 #include <ddraw.h>
  47 #include <commctrl.h>       /* ListView_(Get|Set)* */
  48
  49 #ifndef UNDER_CE
  50 #   include <multimon.h>
  51 #endif
  52 #undef GetSystemMetrics
  53
  54 #ifndef MONITOR_DEFAULTTONEAREST
  55 #   define MONITOR_DEFAULTTONEAREST 2
  56 #endif
  57
  58 #include "vout.h"
  59
  60 /*****************************************************************************
  61  * picture_sys_t: direct buffer method descriptor
  62  *****************************************************************************
  63  * This structure is part of the picture descriptor, it describes the
  64  * DirectX specific properties of a direct buffer.
  65  *****************************************************************************/
  66 struct picture_sys_t
  67 {
  68     LPDIRECTDRAWSURFACE2 p_surface;
  69     LPDIRECTDRAWSURFACE2 p_front_surface;
  70     DDSURFACEDESC        ddsd;
  71 };
  72
  73 /*****************************************************************************
  74  * DirectDraw GUIDs.
  75  * Defining them here allows us to get rid of the dxguid library during
  76  * the linking stage.
  77  *****************************************************************************/
  78 #include <initguid.h>
  79 #undef GUID_EXT
  80 #define GUID_EXT
  81 DEFINE_GUID( IID_IDirectDraw2, 0xB3A6F3E0,0x2B43,0x11CF,0xA2,0xDE,0x00,0xAA,0x00,0xB9,0x33,0x56 );
  82 DEFINE_GUID( IID_IDirectDrawSurface2, 0x57805885,0x6eec,0x11cf,0x94,0x41,0xa8,0x23,0x03,0xc1,0x0e,0x27 );
  83
  84 /*****************************************************************************
  85  * Local prototypes.
  86  *****************************************************************************/
  87 static int  OpenVideo  ( vlc_object_t * );
  88 static void CloseVideo ( vlc_object_t * );
  89
  90 static int  Init      ( vout_thread_t * );
  91 static void End       ( vout_thread_t * );
  92 static int  Manage    ( vout_thread_t * );
  93 static void Display   ( vout_thread_t *, picture_t * );
  94 static void FirstDisplay( vout_thread_t *, picture_t * );
  95 static void SetPalette( vout_thread_t *, uint16_t *, uint16_t *, uint16_t * );
  96
  97 static int  NewPictureVec  ( vout_thread_t *, picture_t * );
  98 static void FreePictureVec ( vout_thread_t *, picture_t *, int );
  99 static int  UpdatePictureStruct( vout_thread_t *, picture_t * );
 100
 101 static int  DirectXInitDDraw      ( vout_thread_t *p_vout );
 102 static void DirectXCloseDDraw     ( vout_thread_t *p_vout );
 103 static int  DirectXCreateDisplay  ( vout_thread_t *p_vout );
 104 static void DirectXCloseDisplay   ( vout_thread_t *p_vout );
 105 static int  DirectXCreateSurface  ( vout_thread_t *p_vout,
 106                                     LPDIRECTDRAWSURFACE2 *, int, int, int );
 107 static void DirectXCloseSurface   ( vout_thread_t *p_vout,
 108                                     LPDIRECTDRAWSURFACE2 );
 109 static int  DirectXCreateClipper  ( vout_thread_t *p_vout );
 110 static void DirectXGetDDrawCaps   ( vout_thread_t *p_vout );
 111 static int  DirectXLockSurface    ( vout_thread_t *p_vout, picture_t *p_pic );
 112 static int  DirectXUnlockSurface  ( vout_thread_t *p_vout, picture_t *p_pic );
 113
 114 static DWORD DirectXFindColorkey( vout_thread_t *p_vout, uint32_t *i_color );
 115
 116 void SwitchWallpaperMode( vout_thread_t *, bool );
 117
 118 /* Object variables callbacks */
 119 static int FindDevicesCallback( vlc_object_t *, char const *,
 120                                 vlc_value_t, vlc_value_t, void * );
 121 static int WallpaperCallback( vlc_object_t *, char const *,
 122                               vlc_value_t, vlc_value_t, void * );
 123
 124 BOOL WINAPI DirectXEnumCallback( GUID* p_guid, LPTSTR psz_desc,
 125                                  LPTSTR psz_drivername, VOID* p_context,
 126                                  HMONITOR hmon );
 127
 128 BOOL WINAPI DirectXEnumCallback2( GUID* p_guid, LPTSTR psz_desc,
 129                                   LPTSTR psz_drivername, VOID* p_context,
 130                                   HMONITOR hmon );
 131
 132 /*****************************************************************************
 133  * Module descriptor
 134  *****************************************************************************/
 135 #define HW_YUV_TEXT N_("Use hardware YUV->RGB conversions")
 136 #define HW_YUV_LONGTEXT N_( \
 137     "Try to use hardware acceleration for YUV->RGB conversions. " \
 138     "This option doesn't have any effect when using overlays." )
 139
 140 #define SYSMEM_TEXT N_("Use video buffers in system memory")
 141 #define SYSMEM_LONGTEXT N_( \
 142     "Create video buffers in system memory instead of video memory. This " \
 143     "isn't recommended as usually using video memory allows to benefit from " \
 144     "more hardware acceleration (like rescaling or YUV->RGB conversions). " \
 145     "This option doesn't have any effect when using overlays." )
 146
 147 #define TRIPLEBUF_TEXT N_("Use triple buffering for overlays")
 148 #define TRIPLEBUF_LONGTEXT N_( \
 149     "Try to use triple buffering when using YUV overlays. That results in " \
 150     "much better video quality (no flickering)." )
 151
 152 #define DEVICE_TEXT N_("Name of desired display device")
 153 #define DEVICE_LONGTEXT N_("In a multiple monitor configuration, you can " \
 154     "specify the Windows device name of the display that you want the video " \
 155     "window to open on. For example, \"\\\\.\\DISPLAY1\" or " \
 156     "\"\\\\.\\DISPLAY2\"." )
 157
 158 #define WALLPAPER_TEXT N_("Enable wallpaper mode ")
 159 #define WALLPAPER_LONGTEXT N_( \
 160     "The wallpaper mode allows you to display the video as the desktop " \
 161     "background. Note that this feature only works in overlay mode and " \
 162     "the desktop must not already have a wallpaper." )
 163
 164 static const char *const ppsz_dev[] = { "" };
 165 static const char *const ppsz_dev_text[] = { N_("Default") };
 166
 167 vlc_module_begin ()
 168     set_shortname( "DirectX" )
 169     set_category( CAT_VIDEO )
 170     set_subcategory( SUBCAT_VIDEO_VOUT )
 171     add_bool( "directx-hw-yuv", true, NULL, HW_YUV_TEXT, HW_YUV_LONGTEXT,
 172               true )
 173     add_bool( "directx-use-sysmem", false, NULL, SYSMEM_TEXT, SYSMEM_LONGTEXT,
 174               true )
 175     add_bool( "directx-3buffering", true, NULL, TRIPLEBUF_TEXT,
 176               TRIPLEBUF_LONGTEXT, true )
 177
 178     add_string( "directx-device", "", NULL, DEVICE_TEXT, DEVICE_LONGTEXT,
 179                 true )
 180         change_string_list( ppsz_dev, ppsz_dev_text, FindDevicesCallback )
 181         change_action_add( FindDevicesCallback, N_("Refresh list") )
 182
 183     add_bool( "directx-wallpaper", false, NULL, WALLPAPER_TEXT, WALLPAPER_LONGTEXT,
 184               true )
 185
 186     set_description( N_("DirectX (DirectDraw) video output") )
 187     set_capability( "video output", 100 )
 188     add_shortcut( "directx" )
 189     set_callbacks( OpenVideo, CloseVideo )
 190
 191     /* FIXME: Hack to avoid unregistering our window class */
 192     linked_with_a_crap_library_which_uses_atexit ()
 193 vlc_module_end ()
 194
 195 #if 0 /* FIXME */
 196     /* check if we registered a window class because we need to
 197      * unregister it */
 198     WNDCLASS wndclass;
 199     if( GetClassInfo( GetModuleHandle(NULL), "VLC DirectX", &wndclass ) )
 200         UnregisterClass( "VLC DirectX", GetModuleHandle(NULL) );
 201 #endif
 202
 203 /*****************************************************************************
 204  * OpenVideo: allocate DirectX video thread output method
 205  *****************************************************************************
 206  * This function allocates and initialize the DirectX vout method.
 207  *****************************************************************************/
 208 static int OpenVideo( vlc_object_t *p_this )
 209 {
 210     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 211     vlc_value_t val;
 212     HMODULE huser32;
 213
 214     /* Allocate structure */
 215     p_vout->p_sys = calloc( 1, sizeof( vout_sys_t ) );
 216     if( p_vout->p_sys == NULL )
 217         return VLC_ENOMEM;
 218     vlc_mutex_init( &p_vout->p_sys->lock );
 219
 220     /* Initialisations */
 221     p_vout->pf_init = Init;
 222     p_vout->pf_end = End;
 223     p_vout->pf_manage = Manage;
 224     p_vout->pf_render = NULL;
 225     p_vout->pf_display = FirstDisplay;
 226     p_vout->pf_control = Control;
 227
 228     if( CommonInit( p_vout ) )
 229         goto error;
 230
 231     /* */
 232     p_vout->p_sys->p_ddobject = NULL;
 233     p_vout->p_sys->p_display = NULL;
 234     p_vout->p_sys->p_current_surface = NULL;
 235     p_vout->p_sys->p_clipper = NULL;
 236     p_vout->p_sys->b_wallpaper = 0;
 237
 238     /* Multimonitor stuff */
 239     p_vout->p_sys->hmonitor = NULL;
 240     p_vout->p_sys->p_display_driver = NULL;
 241     p_vout->p_sys->MonitorFromWindow = NULL;
 242     p_vout->p_sys->GetMonitorInfo = NULL;
 243     if( (huser32 = GetModuleHandle( _T("USER32") ) ) )
 244     {
 245         p_vout->p_sys->MonitorFromWindow = (HMONITOR (WINAPI *)( HWND, DWORD ))
 246             GetProcAddress( huser32, _T("MonitorFromWindow") );
 247         p_vout->p_sys->GetMonitorInfo =
 248             GetProcAddress( huser32, _T("GetMonitorInfoW") );
 249     }
 250
 251     var_Create( p_vout, "overlay", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 252     var_Create( p_vout, "directx-use-sysmem", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 253     var_Create( p_vout, "directx-hw-yuv", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 254     var_Create( p_vout, "directx-3buffering", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 255     var_Create( p_vout, "directx-device", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 256
 257     /* Initialise DirectDraw */
 258     if( DirectXInitDDraw( p_vout ) )
 259     {
 260         msg_Err( p_vout, "cannot initialize DirectX DirectDraw" );
 261         goto error;
 262     }
 263
 264     /* Create the directx display */
 265     if( DirectXCreateDisplay( p_vout ) )
 266     {
 267         msg_Err( p_vout, "cannot initialize DirectX DirectDraw" );
 268         goto error;
 269     }
 270
 271     /* Variable to indicate if the window should be on top of others */
 272     /* Trigger a callback right now */
 273     var_Create( p_vout, "directx-wallpaper", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 274     val.psz_string = _("Wallpaper");
 275     var_Change( p_vout, "directx-wallpaper", VLC_VAR_SETTEXT, &val, NULL );
 276     var_AddCallback( p_vout, "directx-wallpaper", WallpaperCallback, NULL );
 277     var_TriggerCallback( p_vout, "directx-wallpaper" );
 278
 279     return VLC_SUCCESS;
 280
 281  error:
 282     CloseVideo( VLC_OBJECT(p_vout) );
 283     return VLC_EGENERIC;
 284 }
 285
 286 /*****************************************************************************
 287  * Init: initialize DirectX video thread output method
 288  *****************************************************************************
 289  * This function create the directx surfaces needed by the output thread.
 290  * It is called at the beginning of the thread.
 291  *****************************************************************************/
 292 static int Init( vout_thread_t *p_vout )
 293 {
 294     int i_chroma_backup;
 295
 296     /* Get a few default parameters */
 297     p_vout->p_sys->b_using_overlay = var_GetBool( p_vout, "overlay" );
 298     p_vout->p_sys->b_use_sysmem = var_GetBool( p_vout, "directx-use-sysmem" );
 299     p_vout->p_sys->b_hw_yuv = var_GetBool( p_vout, "directx-hw-yuv" );
 300     p_vout->p_sys->b_3buf_overlay = var_GetBool( p_vout, "directx-3buffering" );
 301
 302     /* Initialise DirectDraw if not already done.
 303      * We do this here because on multi-monitor systems we may have to
 304      * re-create the directdraw surfaces. */
 305     if( !p_vout->p_sys->p_ddobject &&
 306         DirectXInitDDraw( p_vout ) != VLC_SUCCESS )
 307     {
 308         msg_Err( p_vout, "cannot initialize DirectDraw" );
 309         return VLC_EGENERIC;
 310     }
 311
 312     /* Create the directx display */
 313     if( !p_vout->p_sys->p_display &&
 314         DirectXCreateDisplay( p_vout ) != VLC_SUCCESS )
 315     {
 316         msg_Err( p_vout, "cannot initialize DirectDraw" );
 317         return VLC_EGENERIC;
 318     }
 319
 320     /* Initialize the output structure.
 321      * Since DirectDraw can do rescaling for us, stick to the default
 322      * coordinates and aspect. */
 323     p_vout->output.i_width  = p_vout->render.i_width;
 324     p_vout->output.i_height = p_vout->render.i_height;
 325     p_vout->output.i_aspect = p_vout->render.i_aspect;
 326     p_vout->fmt_out = p_vout->fmt_in;
 327     UpdateRects( p_vout, true );
 328
 329 #define MAX_DIRECTBUFFERS 1
 330     /* Right now we use only 1 directbuffer because we don't want the
 331      * video decoder to decode directly into direct buffers as they are
 332      * created into video memory and video memory is _really_ slow */
 333
 334     /* Choose the chroma we will try first. */
 335     switch( p_vout->render.i_chroma )
 336     {
 337         case VLC_CODEC_YUYV:
 338             p_vout->output.i_chroma = VLC_CODEC_YUYV;
 339             break;
 340         case VLC_CODEC_UYVY:
 341             p_vout->output.i_chroma = VLC_CODEC_UYVY;
 342             break;
 343         case VLC_CODEC_YVYU:
 344             p_vout->output.i_chroma = VLC_CODEC_YVYU;
 345             break;
 346         case VLC_CODEC_I420:
 347             p_vout->output.i_chroma = VLC_CODEC_I420;
 348             break;
 349         default:
 350             msg_Dbg( p_vout, "use default chroma YV12 for render " \
 351                              "chroma (%4.4s)",
 352                              (char *)&p_vout->render.i_chroma);
 353             p_vout->output.i_chroma = VLC_CODEC_YV12;
 354             break;
 355     }
 356
 357     NewPictureVec( p_vout, p_vout->p_picture );
 358
 359     i_chroma_backup = p_vout->output.i_chroma;
 360
 361     if( !I_OUTPUTPICTURES )
 362     {
 363         /* hmmm, it didn't work! Let's try commonly supported chromas */
 364         if( p_vout->output.i_chroma != VLC_CODEC_I420 )
 365         {
 366             p_vout->output.i_chroma = VLC_CODEC_YV12;
 367             NewPictureVec( p_vout, p_vout->p_picture );
 368         }
 369         if( !I_OUTPUTPICTURES )
 370         {
 371             /* hmmm, it still didn't work! Let's try another one */
 372             p_vout->output.i_chroma = VLC_CODEC_YUYV;
 373             NewPictureVec( p_vout, p_vout->p_picture );
 374         }
 375     }
 376
 377     if( !I_OUTPUTPICTURES )
 378     {
 379         /* If it still didn't work then don't try to use an overlay */
 380         p_vout->output.i_chroma = i_chroma_backup;
 381         p_vout->p_sys->b_using_overlay = false;
 382         msg_Warn( p_vout, "Could not initialize directx overlay" ) ;
 383         NewPictureVec( p_vout, p_vout->p_picture );
 384     }
 385
 386     p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 387
 388     /* Change the window title bar text */
 389     const char *psz_fallback;
 390     if( p_vout->p_sys->b_using_overlay )
 391         psz_fallback = VOUT_TITLE " (hardware YUV overlay DirectX output)";
 392     else if( p_vout->p_sys->b_hw_yuv )
 393         psz_fallback = VOUT_TITLE " (hardware YUV DirectX output)";
 394     else
 395         psz_fallback = VOUT_TITLE " (software RGB DirectX output)";
 396     EventThreadUpdateTitle( p_vout->p_sys->p_event, psz_fallback );
 397     EventThreadUseOverlay( p_vout->p_sys->p_event, p_vout->p_sys->b_using_overlay );
 398
 399     return VLC_SUCCESS;
 400 }
 401
 402 /*****************************************************************************
 403  * End: terminate Sys video thread output method
 404  *****************************************************************************
 405  * Terminate an output method created by Create.
 406  * It is called at the end of the thread.
 407  *****************************************************************************/
 408 static void End( vout_thread_t *p_vout )
 409 {
 410     FreePictureVec( p_vout, p_vout->p_picture, I_OUTPUTPICTURES );
 411
 412     DirectXCloseDisplay( p_vout );
 413     DirectXCloseDDraw( p_vout );
 414
 415     return;
 416 }
 417
 418 /*****************************************************************************
 419  * CloseVideo: destroy Sys video thread output method
 420  *****************************************************************************
 421  * Terminate an output method created by Create
 422  *****************************************************************************/
 423 static void CloseVideo( vlc_object_t *p_this )
 424 {
 425     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 426
 427     /* Make sure the wallpaper is restored */
 428     var_DelCallback( p_vout, "directx-wallpaper", WallpaperCallback, NULL );
 429     SwitchWallpaperMode( p_vout, false );
 430
 431     CommonClean( p_vout );
 432
 433     vlc_mutex_destroy( &p_vout->p_sys->lock );
 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     char *psz_device;
 601
 602     msg_Dbg( p_vout, "DirectXEnumCallback: %s, %s", psz_desc, psz_drivername );
 603
 604     if( hmon )
 605     {
 606         psz_device = var_GetString( p_vout, "directx-device" );
 607
 608         if( ( !psz_device || !*psz_device ) &&
 609             hmon == p_vout->p_sys->hmonitor )
 610         {
 611             free( psz_device );
 612         }
 613         else if( strcmp( psz_drivername, psz_device ) == 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( psz_device );
 638         }
 639         else
 640         {
 641             free( psz_device );
 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         char *psz_device;
 693
 694         psz_device = var_GetString( p_vout, "directx-device" );
 695         if( psz_device )
 696         {
 697             msg_Dbg( p_vout, "directx-device: %s", psz_device );
 698             free( psz_device );
 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                 free( pi_codes );
1274             }
1275
1276             if( b_result )
1277                 i_ret = DirectXCreateSurface( p_vout, &p_surface,
1278                                               p_vout->output.i_chroma,
1279                                               0 /* no overlay */,
1280                                               0 /* no back buffers */ );
1281             else
1282                 p_vout->p_sys->b_hw_yuv = false;
1283         }
1284
1285         if( i_ret || !p_vout->p_sys->b_hw_yuv )
1286         {
1287             /* Our last choice is to use a plain RGB surface */
1288             DDPIXELFORMAT ddpfPixelFormat;
1289
1290             ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1291             IDirectDrawSurface2_GetPixelFormat( p_vout->p_sys->p_display,
1292                                                 &ddpfPixelFormat );
1293
1294             if( ddpfPixelFormat.dwFlags & DDPF_RGB )
1295             {
1296                 switch( ddpfPixelFormat.dwRGBBitCount )
1297                 {
1298                 case 8:
1299                     p_vout->output.i_chroma = VLC_CODEC_RGB8;
1300                     p_vout->output.pf_setpalette = SetPalette;
1301                     break;
1302                 case 15:
1303                     p_vout->output.i_chroma = VLC_CODEC_RGB15;
1304                     break;
1305                 case 16:
1306                     p_vout->output.i_chroma = VLC_CODEC_RGB16;
1307                     break;
1308                 case 24:
1309                     p_vout->output.i_chroma = VLC_CODEC_RGB24;
1310                     break;
1311                 case 32:
1312                     p_vout->output.i_chroma = VLC_CODEC_RGB32;
1313                     break;
1314                 default:
1315                     msg_Err( p_vout, "unknown screen depth" );
1316                     return VLC_EGENERIC;
1317                 }
1318                 p_vout->output.i_rmask = ddpfPixelFormat.dwRBitMask;
1319                 p_vout->output.i_gmask = ddpfPixelFormat.dwGBitMask;
1320                 p_vout->output.i_bmask = ddpfPixelFormat.dwBBitMask;
1321             }
1322
1323             p_vout->p_sys->b_hw_yuv = 0;
1324
1325             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1326                                           p_vout->output.i_chroma,
1327                                           0 /* no overlay */,
1328                                           0 /* no back buffers */ );
1329
1330             if( i_ret && !p_vout->p_sys->b_use_sysmem )
1331             {
1332                 /* Give it a last try with b_use_sysmem enabled */
1333                 p_vout->p_sys->b_use_sysmem = 1;
1334
1335                 i_ret = DirectXCreateSurface( p_vout, &p_surface,
1336                                               p_vout->output.i_chroma,
1337                                               0 /* no overlay */,
1338                                               0 /* no back buffers */ );
1339             }
1340         }
1341
1342         if( i_ret == VLC_SUCCESS )
1343         {
1344             /* Allocate internal structure */
1345             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1346             if( p_pic[0].p_sys == NULL )
1347             {
1348                 DirectXCloseSurface( p_vout, p_surface );
1349                 return VLC_ENOMEM;
1350             }
1351
1352             p_pic[0].p_sys->p_surface = p_pic[0].p_sys->p_front_surface
1353                 = p_surface;
1354
1355             I_OUTPUTPICTURES = 1;
1356
1357             msg_Dbg( p_vout, "created plain surface of chroma:%.4s",
1358                      (char *)&p_vout->output.i_chroma );
1359         }
1360     }
1361
1362
1363     /* Now that we've got all our direct-buffers, we can finish filling in the
1364      * picture_t structures */
1365     for( i = 0; i < I_OUTPUTPICTURES; i++ )
1366     {
1367         p_pic[i].i_status = DESTROYED_PICTURE;
1368         p_pic[i].i_type   = DIRECT_PICTURE;
1369         p_pic[i].b_slow   = true;
1370         p_pic[i].pf_lock  = DirectXLockSurface;
1371         p_pic[i].pf_unlock = DirectXUnlockSurface;
1372         PP_OUTPUTPICTURE[i] = &p_pic[i];
1373
1374         if( DirectXLockSurface( p_vout, &p_pic[i] ) != VLC_SUCCESS )
1375         {
1376             /* AAARRGG */
1377             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1378             I_OUTPUTPICTURES = 0;
1379             msg_Err( p_vout, "cannot lock surface" );
1380             return VLC_EGENERIC;
1381         }
1382         DirectXUnlockSurface( p_vout, &p_pic[i] );
1383     }
1384
1385     msg_Dbg( p_vout, "End NewPictureVec (%s)",
1386              I_OUTPUTPICTURES ? "succeeded" : "failed" );
1387
1388     return VLC_SUCCESS;
1389 }
1390
1391 /*****************************************************************************
1392  * FreePicture: destroy a picture vector allocated with NewPictureVec
1393  *****************************************************************************
1394  *
1395  *****************************************************************************/
1396 static void FreePictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1397                             int i_num_pics )
1398 {
1399     int i;
1400
1401     vlc_mutex_lock( &p_vout->p_sys->lock );
1402     p_vout->p_sys->p_current_surface = 0;
1403     vlc_mutex_unlock( &p_vout->p_sys->lock );
1404
1405     for( i = 0; i < i_num_pics; i++ )
1406     {
1407         DirectXCloseSurface( p_vout, p_pic[i].p_sys->p_front_surface );
1408
1409         for( i = 0; i < i_num_pics; i++ )
1410         {
1411             free( p_pic[i].p_sys );
1412         }
1413     }
1414 }
1415
1416 /*****************************************************************************
1417  * UpdatePictureStruct: updates the internal data in the picture_t structure
1418  *****************************************************************************
1419  * This will setup stuff for use by the video_output thread
1420  *****************************************************************************/
1421 static int UpdatePictureStruct( vout_thread_t *p_vout, picture_t *p_pic )
1422 {
1423     switch( p_vout->output.i_chroma )
1424     {
1425         case VLC_CODEC_RGB8:
1426         case VLC_CODEC_RGB15:
1427         case VLC_CODEC_RGB16:
1428         case VLC_CODEC_RGB24:
1429         case VLC_CODEC_RGB32:
1430             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1431             p_pic->p->i_lines = p_vout->output.i_height;
1432             p_pic->p->i_visible_lines = p_vout->output.i_height;
1433             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1434             switch( p_vout->output.i_chroma )
1435             {
1436                 case VLC_CODEC_RGB8:
1437                     p_pic->p->i_pixel_pitch = 1;
1438                     break;
1439                 case VLC_CODEC_RGB15:
1440                 case VLC_CODEC_RGB16:
1441                     p_pic->p->i_pixel_pitch = 2;
1442                     break;
1443                 case VLC_CODEC_RGB24:
1444                     p_pic->p->i_pixel_pitch = 3;
1445                     break;
1446                 case VLC_CODEC_RGB32:
1447                     p_pic->p->i_pixel_pitch = 4;
1448                     break;
1449                 default:
1450                     return VLC_EGENERIC;
1451             }
1452             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1453               p_pic->p->i_pixel_pitch;
1454             p_pic->i_planes = 1;
1455             break;
1456
1457         case VLC_CODEC_YV12:
1458
1459             /* U and V inverted compared to I420
1460              * Fixme: this should be handled by the vout core */
1461             /* could this be right? */
1462             p_vout->output.i_chroma = VLC_CODEC_I420;
1463
1464             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1465             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1466             p_pic->p[Y_PLANE].i_visible_lines = p_vout->output.i_height;
1467             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1468             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1469             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1470               p_pic->p[Y_PLANE].i_pixel_pitch;
1471
1472             p_pic->V_PIXELS =  p_pic->Y_PIXELS
1473               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1474             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1475             p_pic->p[V_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1476             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1477             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1478             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1479               p_pic->p[V_PLANE].i_pixel_pitch;
1480
1481             p_pic->U_PIXELS = p_pic->V_PIXELS
1482               + p_pic->p[V_PLANE].i_lines * p_pic->p[V_PLANE].i_pitch;
1483             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1484             p_pic->p[U_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1485             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1486             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1487             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1488               p_pic->p[U_PLANE].i_pixel_pitch;
1489
1490             p_pic->i_planes = 3;
1491             break;
1492
1493         case VLC_CODEC_I420:
1494
1495             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1496             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1497             p_pic->p[Y_PLANE].i_visible_lines = p_vout->output.i_height;
1498             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1499             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1500             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1501               p_pic->p[Y_PLANE].i_pixel_pitch;
1502
1503             p_pic->U_PIXELS = p_pic->Y_PIXELS
1504               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1505             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1506             p_pic->p[U_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1507             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1508             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1509             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1510               p_pic->p[U_PLANE].i_pixel_pitch;
1511
1512             p_pic->V_PIXELS =  p_pic->U_PIXELS
1513               + p_pic->p[U_PLANE].i_lines * p_pic->p[U_PLANE].i_pitch;
1514             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1515             p_pic->p[V_PLANE].i_visible_lines = p_vout->output.i_height / 2;
1516             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1517             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1518             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1519               p_pic->p[V_PLANE].i_pixel_pitch;
1520
1521             p_pic->i_planes = 3;
1522             break;
1523
1524         case VLC_CODEC_UYVY:
1525         case VLC_CODEC_YUYV:
1526
1527             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1528             p_pic->p->i_lines = p_vout->output.i_height;
1529             p_pic->p->i_visible_lines = p_vout->output.i_height;
1530             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1531             p_pic->p->i_pixel_pitch = 2;
1532             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1533               p_pic->p->i_pixel_pitch;
1534
1535             p_pic->i_planes = 1;
1536             break;
1537
1538         default:
1539             /* Unknown chroma, tell the guy to get lost */
1540             msg_Err( p_vout, "never heard of chroma 0x%.8x (%4.4s)",
1541                      p_vout->output.i_chroma,
1542                      (char*)&p_vout->output.i_chroma );
1543             return VLC_EGENERIC;
1544     }
1545
1546     return VLC_SUCCESS;
1547 }
1548
1549 /*****************************************************************************
1550  * DirectXGetDDrawCaps: Probe the capabilities of the hardware
1551  *****************************************************************************
1552  * It is nice to know which features are supported by the hardware so we can
1553  * find ways to optimize our rendering.
1554  *****************************************************************************/
1555 static void DirectXGetDDrawCaps( vout_thread_t *p_vout )
1556 {
1557     DDCAPS ddcaps;
1558     HRESULT dxresult;
1559
1560     /* This is just an indication of whether or not we'll support overlay,
1561      * but with this test we don't know if we support YUV overlay */
1562     memset( &ddcaps, 0, sizeof( DDCAPS ));
1563     ddcaps.dwSize = sizeof(DDCAPS);
1564     dxresult = IDirectDraw2_GetCaps( p_vout->p_sys->p_ddobject,
1565                                      &ddcaps, NULL );
1566     if(dxresult != DD_OK )
1567     {
1568         msg_Warn( p_vout, "cannot get caps" );
1569     }
1570     else
1571     {
1572         bool bHasOverlay, bHasOverlayFourCC, bCanDeinterlace,
1573              bHasColorKey, bCanStretch, bCanBltFourcc,
1574              bAlignBoundarySrc, bAlignBoundaryDest,
1575              bAlignSizeSrc, bAlignSizeDest;
1576
1577         /* Determine if the hardware supports overlay surfaces */
1578         bHasOverlay = (ddcaps.dwCaps & DDCAPS_OVERLAY) ? 1 : 0;
1579         /* Determine if the hardware supports overlay surfaces */
1580         bHasOverlayFourCC = (ddcaps.dwCaps & DDCAPS_OVERLAYFOURCC) ? 1 : 0;
1581         /* Determine if the hardware supports overlay deinterlacing */
1582         bCanDeinterlace = (ddcaps.dwCaps & DDCAPS2_CANFLIPODDEVEN) ? 1 : 0;
1583         /* Determine if the hardware supports colorkeying */
1584         bHasColorKey = (ddcaps.dwCaps & DDCAPS_COLORKEY) ? 1 : 0;
1585         /* Determine if the hardware supports scaling of the overlay surface */
1586         bCanStretch = (ddcaps.dwCaps & DDCAPS_OVERLAYSTRETCH) ? 1 : 0;
1587         /* Determine if the hardware supports color conversion during a blit */
1588         bCanBltFourcc = (ddcaps.dwCaps & DDCAPS_BLTFOURCC) ? 1 : 0;
1589         /* Determine overlay source boundary alignment */
1590         bAlignBoundarySrc = (ddcaps.dwCaps & DDCAPS_ALIGNBOUNDARYSRC) ? 1 : 0;
1591         /* Determine overlay destination boundary alignment */
1592         bAlignBoundaryDest = (ddcaps.dwCaps & DDCAPS_ALIGNBOUNDARYDEST) ? 1:0;
1593         /* Determine overlay destination size alignment */
1594         bAlignSizeSrc = (ddcaps.dwCaps & DDCAPS_ALIGNSIZESRC) ? 1 : 0;
1595         /* Determine overlay destination size alignment */
1596         bAlignSizeDest = (ddcaps.dwCaps & DDCAPS_ALIGNSIZEDEST) ? 1 : 0;
1597
1598         msg_Dbg( p_vout, "DirectDraw Capabilities: overlay=%i yuvoverlay=%i "
1599                          "can_deinterlace_overlay=%i colorkey=%i stretch=%i "
1600                          "bltfourcc=%i",
1601                          bHasOverlay, bHasOverlayFourCC, bCanDeinterlace,
1602                          bHasColorKey, bCanStretch, bCanBltFourcc );
1603
1604         if( bAlignBoundarySrc || bAlignBoundaryDest ||
1605             bAlignSizeSrc || bAlignSizeDest )
1606         {
1607             if( bAlignBoundarySrc ) p_vout->p_sys->i_align_src_boundary =
1608                 ddcaps.dwAlignBoundarySrc;
1609             if( bAlignBoundaryDest ) p_vout->p_sys->i_align_dest_boundary =
1610                 ddcaps.dwAlignBoundaryDest;
1611             if( bAlignSizeDest ) p_vout->p_sys->i_align_src_size =
1612                 ddcaps.dwAlignSizeSrc;
1613             if( bAlignSizeDest ) p_vout->p_sys->i_align_dest_size =
1614                 ddcaps.dwAlignSizeDest;
1615
1616             msg_Dbg( p_vout, "align_boundary_src=%i,%i "
1617                      "align_boundary_dest=%i,%i "
1618                      "align_size_src=%i,%i align_size_dest=%i,%i",
1619                      bAlignBoundarySrc, p_vout->p_sys->i_align_src_boundary,
1620                      bAlignBoundaryDest, p_vout->p_sys->i_align_dest_boundary,
1621                      bAlignSizeSrc, p_vout->p_sys->i_align_src_size,
1622                      bAlignSizeDest, p_vout->p_sys->i_align_dest_size );
1623         }
1624
1625         /* Don't ask for troubles */
1626         if( !bCanBltFourcc ) p_vout->p_sys->b_hw_yuv = FALSE;
1627     }
1628 }
1629
1630 /*****************************************************************************
1631  * DirectXLockSurface: Lock surface and get picture data pointer
1632  *****************************************************************************
1633  * This function locks a surface and get the surface descriptor which amongst
1634  * other things has the pointer to the picture data.
1635  *****************************************************************************/
1636 static int DirectXLockSurface( vout_thread_t *p_vout, picture_t *p_pic )
1637 {
1638     HRESULT dxresult;
1639
1640     /* Lock the surface to get a valid pointer to the picture buffer */
1641     memset( &p_pic->p_sys->ddsd, 0, sizeof( DDSURFACEDESC ));
1642     p_pic->p_sys->ddsd.dwSize = sizeof(DDSURFACEDESC);
1643     dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface,
1644                                          NULL, &p_pic->p_sys->ddsd,
1645                                          DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1646                                          NULL );
1647     if( dxresult != DD_OK )
1648     {
1649         if( dxresult == DDERR_INVALIDPARAMS )
1650         {
1651             /* DirectX 3 doesn't support the DDLOCK_NOSYSLOCK flag, resulting
1652              * in an invalid params error */
1653             dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1654                                              &p_pic->p_sys->ddsd,
1655                                              DDLOCK_WAIT, NULL);
1656         }
1657         if( dxresult == DDERR_SURFACELOST )
1658         {
1659             /* Your surface can be lost so be sure
1660              * to check this and restore it if needed */
1661
1662             /* When using overlays with back-buffers, we need to restore
1663              * the front buffer so the back-buffers get restored as well. */
1664             if( p_vout->p_sys->b_using_overlay  )
1665                 IDirectDrawSurface2_Restore( p_pic->p_sys->p_front_surface );
1666             else
1667                 IDirectDrawSurface2_Restore( p_pic->p_sys->p_surface );
1668
1669             dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1670                                                  &p_pic->p_sys->ddsd,
1671                                                  DDLOCK_WAIT, NULL);
1672 #ifndef NDEBUG
1673             if( dxresult == DDERR_SURFACELOST )
1674                 msg_Dbg( p_vout, "DirectXLockSurface: DDERR_SURFACELOST" );
1675 #endif
1676         }
1677         if( dxresult != DD_OK )
1678         {
1679             return VLC_EGENERIC;
1680         }
1681     }
1682
1683     /* Now we have a pointer to the surface memory, we can update our picture
1684      * structure. */
1685     if( UpdatePictureStruct( p_vout, p_pic )
1686         != VLC_SUCCESS )
1687     {
1688         DirectXUnlockSurface( p_vout, p_pic );
1689         return VLC_EGENERIC;
1690     }
1691     else
1692         return VLC_SUCCESS;
1693 }
1694
1695 /*****************************************************************************
1696  * DirectXUnlockSurface: Unlock a surface locked by DirectXLockSurface().
1697  *****************************************************************************/
1698 static int DirectXUnlockSurface( vout_thread_t *p_vout, picture_t *p_pic )
1699 {
1700     VLC_UNUSED( p_vout );
1701
1702     /* Unlock the Surface */
1703     if( IDirectDrawSurface2_Unlock( p_pic->p_sys->p_surface, NULL ) == DD_OK )
1704         return VLC_SUCCESS;
1705     else
1706         return VLC_EGENERIC;
1707 }
1708
1709 /*****************************************************************************
1710  * DirectXFindColorkey: Finds out the 32bits RGB pixel value of the colorkey
1711  *****************************************************************************/
1712 static DWORD DirectXFindColorkey( vout_thread_t *p_vout, uint32_t *pi_color )
1713 {
1714     DDSURFACEDESC ddsd;
1715     HRESULT dxresult;
1716     COLORREF i_rgb = 0;
1717     uint32_t i_pixel_backup;
1718     HDC hdc;
1719
1720     ddsd.dwSize = sizeof(ddsd);
1721     dxresult = IDirectDrawSurface2_Lock( p_vout->p_sys->p_display, NULL,
1722                                          &ddsd, DDLOCK_WAIT, NULL );
1723     if( dxresult != DD_OK ) return 0;
1724
1725     i_pixel_backup = *(uint32_t *)ddsd.lpSurface;
1726
1727     switch( ddsd.ddpfPixelFormat.dwRGBBitCount )
1728     {
1729     case 4:
1730         *(uint8_t *)ddsd.lpSurface = *pi_color | (*pi_color << 4);
1731         break;
1732     case 8:
1733         *(uint8_t *)ddsd.lpSurface = *pi_color;
1734         break;
1735     case 15:
1736     case 16:
1737         *(uint16_t *)ddsd.lpSurface = *pi_color;
1738         break;
1739     case 24:
1740         /* Seems to be problematic so we'll just put black as the colorkey */
1741         *pi_color = 0;
1742     default:
1743         *(uint32_t *)ddsd.lpSurface = *pi_color;
1744         break;
1745     }
1746
1747     IDirectDrawSurface2_Unlock( p_vout->p_sys->p_display, NULL );
1748
1749     if( IDirectDrawSurface2_GetDC( p_vout->p_sys->p_display, &hdc ) == DD_OK )
1750     {
1751         i_rgb = GetPixel( hdc, 0, 0 );
1752         IDirectDrawSurface2_ReleaseDC( p_vout->p_sys->p_display, hdc );
1753     }
1754
1755     ddsd.dwSize = sizeof(ddsd);
1756     dxresult = IDirectDrawSurface2_Lock( p_vout->p_sys->p_display, NULL,
1757                                          &ddsd, DDLOCK_WAIT, NULL );
1758     if( dxresult != DD_OK ) return i_rgb;
1759
1760     *(uint32_t *)ddsd.lpSurface = i_pixel_backup;
1761
1762     IDirectDrawSurface2_Unlock( p_vout->p_sys->p_display, NULL );
1763
1764     return i_rgb;
1765 }
1766
1767 /*****************************************************************************
1768  * A few toolbox functions
1769  *****************************************************************************/
1770 void SwitchWallpaperMode( vout_thread_t *p_vout, bool b_on )
1771 {
1772     HWND hwnd;
1773
1774     if( p_vout->p_sys->b_wallpaper == b_on ) return; /* Nothing to do */
1775
1776     hwnd = FindWindow( _T("Progman"), NULL );
1777     if( hwnd ) hwnd = FindWindowEx( hwnd, NULL, _T("SHELLDLL_DefView"), NULL );
1778     if( hwnd ) hwnd = FindWindowEx( hwnd, NULL, _T("SysListView32"), NULL );
1779     if( !hwnd )
1780     {
1781         msg_Warn( p_vout, "couldn't find \"SysListView32\" window, "
1782                   "wallpaper mode not supported" );
1783         return;
1784     }
1785
1786     p_vout->p_sys->b_wallpaper = b_on;
1787
1788     msg_Dbg( p_vout, "wallpaper mode %s", b_on ? "enabled" : "disabled" );
1789
1790     if( p_vout->p_sys->b_wallpaper )
1791     {
1792         p_vout->p_sys->color_bkg = ListView_GetBkColor( hwnd );
1793         p_vout->p_sys->color_bkgtxt = ListView_GetTextBkColor( hwnd );
1794
1795         ListView_SetBkColor( hwnd, p_vout->p_sys->i_rgb_colorkey );
1796         ListView_SetTextBkColor( hwnd, p_vout->p_sys->i_rgb_colorkey );
1797     }
1798     else if( hwnd )
1799     {
1800         ListView_SetBkColor( hwnd, p_vout->p_sys->color_bkg );
1801         ListView_SetTextBkColor( hwnd, p_vout->p_sys->color_bkgtxt );
1802     }
1803
1804     /* Update desktop */
1805     InvalidateRect( hwnd, NULL, TRUE );
1806     UpdateWindow( hwnd );
1807 }
1808
1809 /*****************************************************************************
1810  * config variable callback
1811  *****************************************************************************/
1812 BOOL WINAPI DirectXEnumCallback2( GUID* p_guid, LPTSTR psz_desc,
1813                                   LPTSTR psz_drivername, VOID* p_context,
1814                                   HMONITOR hmon )
1815 {
1816     VLC_UNUSED( p_guid ); VLC_UNUSED( psz_desc ); VLC_UNUSED( hmon );
1817
1818     module_config_t *p_item = (module_config_t *)p_context;
1819
1820     p_item->ppsz_list = xrealloc( p_item->ppsz_list,
1821                           (p_item->i_list+2) * sizeof(char *) );
1822     p_item->ppsz_list_text = xrealloc( p_item->ppsz_list_text,
1823                           (p_item->i_list+2) * sizeof(char *) );
1824
1825     p_item->ppsz_list[p_item->i_list] = strdup( psz_drivername );
1826     p_item->ppsz_list_text[p_item->i_list] = NULL;
1827     p_item->i_list++;
1828     p_item->ppsz_list[p_item->i_list] = NULL;
1829     p_item->ppsz_list_text[p_item->i_list] = NULL;
1830
1831     return TRUE; /* Keep enumerating */
1832 }
1833
1834 static int FindDevicesCallback( vlc_object_t *p_this, char const *psz_name,
1835                                vlc_value_t newval, vlc_value_t oldval, void *d)
1836 {
1837     VLC_UNUSED( newval ); VLC_UNUSED( oldval ); VLC_UNUSED( d );
1838
1839     HRESULT (WINAPI *OurDirectDrawEnumerateEx)( LPDDENUMCALLBACKEXA, LPVOID,
1840                                                 DWORD );
1841     HINSTANCE hddraw_dll;
1842
1843     module_config_t *p_item;
1844     int i;
1845
1846     p_item = config_FindConfig( p_this, psz_name );
1847     if( !p_item ) return VLC_SUCCESS;
1848
1849     /* Clear-up the current list */
1850     if( p_item->i_list )
1851     {
1852         /* Keep the first entry */
1853         for( i = 1; i < p_item->i_list; i++ )
1854         {
1855             free( p_item->ppsz_list[i] );
1856             free( p_item->ppsz_list_text[i] );
1857         }
1858         /* TODO: Remove when no more needed */
1859         p_item->ppsz_list[i] = NULL;
1860         p_item->ppsz_list_text[i] = NULL;
1861     }
1862     p_item->i_list = 1;
1863
1864     /* Load direct draw DLL */
1865     hddraw_dll = LoadLibrary(_T("DDRAW.DLL"));
1866     if( hddraw_dll == NULL ) return VLC_SUCCESS;
1867
1868     OurDirectDrawEnumerateEx =
1869       (void *)GetProcAddress( hddraw_dll, _T("DirectDrawEnumerateExW") );
1870
1871     if( OurDirectDrawEnumerateEx )
1872     {
1873         /* Enumerate displays */
1874         OurDirectDrawEnumerateEx( DirectXEnumCallback2, p_item,
1875                                   DDENUM_ATTACHEDSECONDARYDEVICES );
1876     }
1877
1878     FreeLibrary( hddraw_dll );
1879
1880     /* Signal change to the interface */
1881     p_item->b_dirty = true;
1882
1883     return VLC_SUCCESS;
1884 }
1885
1886 static int WallpaperCallback( vlc_object_t *p_this, char const *psz_cmd,
1887                               vlc_value_t oldval, vlc_value_t newval,
1888                               void *p_data )
1889 {
1890     VLC_UNUSED( psz_cmd ); VLC_UNUSED( oldval ); VLC_UNUSED( p_data );
1891     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1892
1893     if( (newval.b_bool && !p_vout->p_sys->b_wallpaper) ||
1894         (!newval.b_bool && p_vout->p_sys->b_wallpaper) )
1895     {
1896         playlist_t *p_playlist = pl_Hold( p_vout );
1897
1898         if( p_playlist )
1899         {
1900             /* Modify playlist as well because the vout might have to be
1901              * restarted */
1902             var_Create( p_playlist, "directx-wallpaper", VLC_VAR_BOOL );
1903             var_Set( p_playlist, "directx-wallpaper", newval );
1904             pl_Release( p_vout );
1905         }
1906
1907         p_vout->p_sys->i_changes |= DX_WALLPAPER_CHANGE;
1908     }
1909
1910     return VLC_SUCCESS;
1911 }
1912
1913 /*****************************************************************************
1914  * SetPalette: sets an 8 bpp palette
1915  *****************************************************************************/
1916 static void SetPalette( vout_thread_t *p_vout,
1917                         uint16_t *red, uint16_t *green, uint16_t *blue )
1918 {
1919     VLC_UNUSED( red ); VLC_UNUSED( green );VLC_UNUSED( blue );
1920     msg_Err( p_vout, "FIXME: SetPalette unimplemented" );
1921 }