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