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

   1 /*****************************************************************************
   2  * vout.c: Windows DirectX video output display method
   3  *****************************************************************************
   4  * Copyright (C) 2001-2004 VideoLAN
   5  * $Id: directx.c,v 1.34 2004/01/26 16:45:02 zorglub Exp $
   6  *
   7  * Authors: Gildas Bazin <gbazin@netcourrier.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble:
  26  *
  27  * This plugin will use YUV overlay if supported, using overlay will result in
  28  * the best video quality (hardware interpolation when rescaling the picture)
  29  * and the fastest display as it requires less processing.
  30  *
  31  * If YUV overlay is not supported this plugin will use RGB offscreen video
  32  * surfaces that will be blitted onto the primary surface (display) to
  33  * effectively display the pictures. This fallback method also enables us to
  34  * display video in window mode.
  35  *
  36  *****************************************************************************/
  37 #include <errno.h>                                                 /* ENOMEM */
  38 #include <stdlib.h>                                                /* free() */
  39 #include <string.h>                                            /* strerror() */
  40
  41 #include <vlc/vlc.h>
  42 #include <vlc/intf.h>
  43 #include <vlc/vout.h>
  44
  45 #include <windows.h>
  46 #include <ddraw.h>
  47
  48 #include <multimon.h>
  49 #undef GetSystemMetrics
  50
  51 #ifndef MONITOR_DEFAULTTONEAREST
  52 #   define MONITOR_DEFAULTTONEAREST 2
  53 #endif
  54
  55 #include "vout.h"
  56
  57 /*****************************************************************************
  58  * DirectDraw GUIDs.
  59  * Defining them here allows us to get rid of the dxguid library during
  60  * the linking stage.
  61  *****************************************************************************/
  62 #include <initguid.h>
  63 DEFINE_GUID( IID_IDirectDraw2, 0xB3A6F3E0,0x2B43,0x11CF,0xA2,0xDE,0x00,0xAA,0x00,0xB9,0x33,0x56 );
  64 DEFINE_GUID( IID_IDirectDrawSurface2, 0x57805885,0x6eec,0x11cf,0x94,0x41,0xa8,0x23,0x03,0xc1,0x0e,0x27 );
  65
  66 /*****************************************************************************
  67  * Local prototypes.
  68  *****************************************************************************/
  69 static int  OpenVideo  ( vlc_object_t * );
  70 static void CloseVideo ( vlc_object_t * );
  71
  72 static int  Init      ( vout_thread_t * );
  73 static void End       ( vout_thread_t * );
  74 static int  Manage    ( vout_thread_t * );
  75 static void Display   ( vout_thread_t *, picture_t * );
  76
  77 static int  NewPictureVec  ( vout_thread_t *, picture_t *, int );
  78 static void FreePictureVec ( vout_thread_t *, picture_t *, int );
  79 static int  UpdatePictureStruct( vout_thread_t *, picture_t *, int );
  80
  81 static int  DirectXInitDDraw      ( vout_thread_t *p_vout );
  82 static void DirectXCloseDDraw     ( vout_thread_t *p_vout );
  83 static int  DirectXCreateDisplay  ( vout_thread_t *p_vout );
  84 static void DirectXCloseDisplay   ( vout_thread_t *p_vout );
  85 static int  DirectXCreateSurface  ( vout_thread_t *p_vout,
  86                                     LPDIRECTDRAWSURFACE2 *, int, int, int );
  87 static void DirectXCloseSurface   ( vout_thread_t *p_vout,
  88                                     LPDIRECTDRAWSURFACE2 );
  89 static int  DirectXCreateClipper  ( vout_thread_t *p_vout );
  90 static void DirectXGetDDrawCaps   ( vout_thread_t *p_vout );
  91 static int  DirectXLockSurface    ( vout_thread_t *p_vout, picture_t *p_pic );
  92 static int  DirectXUnlockSurface  ( vout_thread_t *p_vout, picture_t *p_pic );
  93
  94 static DWORD DirectXFindColorkey( vout_thread_t *p_vout, uint32_t i_color );
  95
  96 /* Object variables callbacks */
  97 static int OnTopCallback( vlc_object_t *, char const *,
  98                           vlc_value_t, vlc_value_t, void * );
  99 static int FindDevicesCallback( vlc_object_t *, char const *,
 100                                 vlc_value_t, vlc_value_t, void * );
 101
 102 /*****************************************************************************
 103  * Module descriptor
 104  *****************************************************************************/
 105 #define HW_YUV_TEXT N_("Use hardware YUV->RGB conversions")
 106 #define HW_YUV_LONGTEXT N_( \
 107     "Try to use hardware acceleration for YUV->RGB conversions. " \
 108     "This option doesn't have any effect when using overlays." )
 109
 110 #define SYSMEM_TEXT N_("Use video buffers in system memory")
 111 #define SYSMEM_LONGTEXT N_( \
 112     "Create video buffers in system memory instead of video memory. This " \
 113     "isn't recommended as usually using video memory allows to benefit from " \
 114     "more hardware acceleration (like rescaling or YUV->RGB conversions). " \
 115     "This option doesn't have any effect when using overlays." )
 116
 117 #define TRIPLEBUF_TEXT N_("Use triple buffering for overlays")
 118 #define TRIPLEBUF_LONGTEXT N_( \
 119     "Try to use triple bufferring when using YUV overlays. That results in " \
 120     "much better video quality (no flickering)." )
 121
 122 #define DEVICE_TEXT N_("Name of desired display device")
 123 #define DEVICE_LONGTEXT N_("In a multimonitor configuration, you can specify "\
 124     "the Windows device name of the display that you want the video window " \
 125     "to open on. For example, \"\\\\.\\DISPLAY1\" or \"\\\\.\\DISPLAY2\"." )
 126
 127 static char *ppsz_dev[] = { "" };
 128 static char *ppsz_dev_text[] = { N_("Default") };
 129
 130 vlc_module_begin();
 131     add_bool( "directx-hw-yuv", 1, NULL, HW_YUV_TEXT, HW_YUV_LONGTEXT,
 132               VLC_TRUE );
 133     add_bool( "directx-use-sysmem", 0, NULL, SYSMEM_TEXT, SYSMEM_LONGTEXT,
 134               VLC_TRUE );
 135     add_bool( "directx-3buffering", 1, NULL, TRIPLEBUF_TEXT,
 136               TRIPLEBUF_LONGTEXT, VLC_TRUE );
 137
 138     add_string( "directx-device", "", NULL, DEVICE_TEXT, DEVICE_LONGTEXT,
 139                 VLC_TRUE );
 140         change_string_list( ppsz_dev, ppsz_dev_text, FindDevicesCallback );
 141
 142     set_description( _("DirectX video output") );
 143     set_capability( "video output", 100 );
 144     add_shortcut( "directx" );
 145     set_callbacks( OpenVideo, CloseVideo );
 146 vlc_module_end();
 147
 148 #if 0 /* FIXME */
 149     /* check if we registered a window class because we need to
 150      * unregister it */
 151     WNDCLASS wndclass;
 152     if( GetClassInfo( GetModuleHandle(NULL), "VLC DirectX", &wndclass ) )
 153         UnregisterClass( "VLC DirectX", GetModuleHandle(NULL) );
 154 #endif
 155
 156 /*****************************************************************************
 157  * OpenVideo: allocate DirectX video thread output method
 158  *****************************************************************************
 159  * This function allocates and initialize the DirectX vout method.
 160  *****************************************************************************/
 161 static int OpenVideo( vlc_object_t *p_this )
 162 {
 163     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 164     vlc_value_t val, text;
 165     HMODULE huser32;
 166
 167     /* Allocate structure */
 168     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 169     if( p_vout->p_sys == NULL )
 170     {
 171         msg_Err( p_vout, "out of memory" );
 172         return VLC_ENOMEM;
 173     }
 174
 175     /* Initialisations */
 176     p_vout->pf_init = Init;
 177     p_vout->pf_end = End;
 178     p_vout->pf_manage = Manage;
 179     p_vout->pf_render = NULL;
 180     p_vout->pf_display = Display;
 181
 182     p_vout->p_sys->p_ddobject = NULL;
 183     p_vout->p_sys->p_display = NULL;
 184     p_vout->p_sys->p_current_surface = NULL;
 185     p_vout->p_sys->p_clipper = NULL;
 186     p_vout->p_sys->hwnd = NULL;
 187     p_vout->p_sys->hparent = NULL;
 188     p_vout->p_sys->i_changes = 0;
 189
 190     /* Multimonitor stuff */
 191     p_vout->p_sys->hmonitor = NULL;
 192     p_vout->p_sys->p_display_driver = NULL;
 193     p_vout->p_sys->MonitorFromWindow = NULL;
 194     p_vout->p_sys->GetMonitorInfo = NULL;
 195     if( (huser32 = GetModuleHandle( "USER32" ) ) )
 196     {
 197         p_vout->p_sys->MonitorFromWindow =
 198             GetProcAddress( huser32, "MonitorFromWindow" );
 199         p_vout->p_sys->GetMonitorInfo =
 200             GetProcAddress( huser32, "GetMonitorInfoA" );
 201     }
 202
 203     var_Create( p_vout, "overlay", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 204     var_Create( p_vout, "directx-use-sysmem", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 205     var_Create( p_vout, "directx-hw-yuv", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 206     var_Create( p_vout, "directx-3buffering", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
 207     var_Create( p_vout, "directx-device", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 208
 209     p_vout->p_sys->b_cursor_hidden = 0;
 210     p_vout->p_sys->i_lastmoved = mdate();
 211
 212     /* Set main window's size */
 213     p_vout->p_sys->i_window_width = p_vout->i_window_width;
 214     p_vout->p_sys->i_window_height = p_vout->i_window_height;
 215
 216     /* Create the DirectXEventThread, this thread is created by us to isolate
 217      * the Win32 PeekMessage function calls. We want to do this because
 218      * Windows can stay blocked inside this call for a long time, and when
 219      * this happens it thus blocks vlc's video_output thread.
 220      * DirectXEventThread will take care of the creation of the video
 221      * window (because PeekMessage has to be called from the same thread which
 222      * created the window). */
 223     msg_Dbg( p_vout, "creating DirectXEventThread" );
 224     p_vout->p_sys->p_event =
 225         vlc_object_create( p_vout, sizeof(event_thread_t) );
 226     p_vout->p_sys->p_event->p_vout = p_vout;
 227     if( vlc_thread_create( p_vout->p_sys->p_event, "DirectX Events Thread",
 228                            DirectXEventThread, 0, 1 ) )
 229     {
 230         msg_Err( p_vout, "cannot create DirectXEventThread" );
 231         vlc_object_destroy( p_vout->p_sys->p_event );
 232         p_vout->p_sys->p_event = NULL;
 233         goto error;
 234     }
 235
 236     if( p_vout->p_sys->p_event->b_error )
 237     {
 238         msg_Err( p_vout, "DirectXEventThread failed" );
 239         goto error;
 240     }
 241
 242     vlc_object_attach( p_vout->p_sys->p_event, p_vout );
 243
 244     msg_Dbg( p_vout, "DirectXEventThread running" );
 245
 246     /* Initialise DirectDraw */
 247     if( DirectXInitDDraw( p_vout ) )
 248     {
 249         msg_Err( p_vout, "cannot initialize DirectDraw" );
 250         goto error;
 251     }
 252
 253     /* Create the directx display */
 254     if( DirectXCreateDisplay( p_vout ) )
 255     {
 256         msg_Err( p_vout, "cannot initialize DirectDraw" );
 257         goto error;
 258     }
 259
 260     /* Add a variable to indicate if the window should be on top of others */
 261     var_Create( p_vout, "video-on-top", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 262     text.psz_string = _("Always on top");
 263     var_Change( p_vout, "video-on-top", VLC_VAR_SETTEXT, &text, NULL );
 264     var_Get( p_vout, "video-on-top", &val );
 265     p_vout->p_sys->b_on_top_change = val.b_bool;
 266     var_AddCallback( p_vout, "video-on-top", OnTopCallback, NULL );
 267
 268     return VLC_SUCCESS;
 269
 270  error:
 271     CloseVideo( VLC_OBJECT(p_vout) );
 272     return VLC_EGENERIC;
 273 }
 274
 275 /*****************************************************************************
 276  * Init: initialize DirectX video thread output method
 277  *****************************************************************************
 278  * This function create the directx surfaces needed by the output thread.
 279  * It is called at the beginning of the thread.
 280  *****************************************************************************/
 281 static int Init( vout_thread_t *p_vout )
 282 {
 283     int i_chroma_backup;
 284     vlc_value_t val;
 285
 286     /* Get a few default parameters */
 287     var_Get( p_vout, "overlay", &val );
 288     p_vout->p_sys->b_using_overlay = val.b_bool;
 289     var_Get( p_vout, "directx-use-sysmem", &val );
 290     p_vout->p_sys->b_use_sysmem = val.b_bool;
 291     var_Get( p_vout, "directx-hw-yuv", &val );
 292     p_vout->p_sys->b_hw_yuv = val.b_bool;
 293     var_Get( p_vout, "directx-3buffering", &val );
 294     p_vout->p_sys->b_3buf_overlay = val.b_bool;
 295
 296     /* Initialise DirectDraw if not already done.
 297      * We do this here because on multi-monitor systems we may have to
 298      * re-create the directdraw surfaces. */
 299     if( !p_vout->p_sys->p_ddobject &&
 300         DirectXInitDDraw( p_vout ) != VLC_SUCCESS )
 301     {
 302         msg_Err( p_vout, "cannot initialize DirectDraw" );
 303         return VLC_EGENERIC;
 304     }
 305
 306     /* Create the directx display */
 307     if( !p_vout->p_sys->p_display &&
 308         DirectXCreateDisplay( p_vout ) != VLC_SUCCESS )
 309     {
 310         msg_Err( p_vout, "cannot initialize DirectDraw" );
 311         return VLC_EGENERIC;
 312     }
 313
 314     /* Initialize the output structure.
 315      * Since DirectDraw can do rescaling for us, stick to the default
 316      * coordinates and aspect. */
 317     p_vout->output.i_width  = p_vout->render.i_width;
 318     p_vout->output.i_height = p_vout->render.i_height;
 319     p_vout->output.i_aspect = p_vout->render.i_aspect;
 320
 321 #define MAX_DIRECTBUFFERS 1
 322     /* Right now we use only 1 directbuffer because we don't want the
 323      * video decoder to decode directly into direct buffers as they are
 324      * created into video memory and video memory is _really_ slow */
 325
 326     /* Choose the chroma we will try first. */
 327     switch( p_vout->render.i_chroma )
 328     {
 329         case VLC_FOURCC('Y','U','Y','2'):
 330         case VLC_FOURCC('Y','U','N','V'):
 331             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 332             break;
 333         case VLC_FOURCC('U','Y','V','Y'):
 334         case VLC_FOURCC('U','Y','N','V'):
 335         case VLC_FOURCC('Y','4','2','2'):
 336             p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
 337             break;
 338         case VLC_FOURCC('Y','V','Y','U'):
 339             p_vout->output.i_chroma = VLC_FOURCC('Y','V','Y','U');
 340             break;
 341         default:
 342             p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 343             break;
 344     }
 345
 346     NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 347
 348     i_chroma_backup = p_vout->output.i_chroma;
 349
 350     if( !I_OUTPUTPICTURES )
 351     {
 352         /* hmmm, it didn't work! Let's try commonly supported chromas */
 353         if( p_vout->output.i_chroma != VLC_FOURCC('Y','V','1','2') )
 354         {
 355             p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 356             NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 357         }
 358         if( !I_OUTPUTPICTURES )
 359         {
 360             /* hmmm, it still didn't work! Let's try another one */
 361             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 362             NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 363         }
 364     }
 365
 366     if( !I_OUTPUTPICTURES )
 367     {
 368         /* If it still didn't work then don't try to use an overlay */
 369         p_vout->output.i_chroma = i_chroma_backup;
 370         p_vout->p_sys->b_using_overlay = 0;
 371         NewPictureVec( p_vout, p_vout->p_picture, MAX_DIRECTBUFFERS );
 372     }
 373
 374     /* Change the window title bar text */
 375     if( p_vout->p_sys->hparent ) ; /* Do nothing */
 376     else PostMessage( p_vout->p_sys->hwnd, WM_VLC_CHANGE_TEXT, 0, 0 );
 377
 378     return VLC_SUCCESS;
 379 }
 380
 381 /*****************************************************************************
 382  * End: terminate Sys video thread output method
 383  *****************************************************************************
 384  * Terminate an output method created by Create.
 385  * It is called at the end of the thread.
 386  *****************************************************************************/
 387 static void End( vout_thread_t *p_vout )
 388 {
 389     FreePictureVec( p_vout, p_vout->p_picture, I_OUTPUTPICTURES );
 390
 391     DirectXCloseDisplay( p_vout );
 392     DirectXCloseDDraw( p_vout );
 393
 394     return;
 395 }
 396
 397 /*****************************************************************************
 398  * CloseVideo: destroy Sys video thread output method
 399  *****************************************************************************
 400  * Terminate an output method created by Create
 401  *****************************************************************************/
 402 static void CloseVideo( vlc_object_t *p_this )
 403 {
 404     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 405
 406     msg_Dbg( p_vout, "CloseVideo" );
 407
 408     var_Destroy( p_vout, "video-on-top" );
 409
 410     if( p_vout->p_sys->p_event )
 411     {
 412         vlc_object_detach( p_vout->p_sys->p_event );
 413
 414         /* Kill DirectXEventThread */
 415         p_vout->p_sys->p_event->b_die = VLC_TRUE;
 416
 417         /* we need to be sure DirectXEventThread won't stay stuck in
 418          * GetMessage, so we send a fake message */
 419         if( p_vout->p_sys->hwnd )
 420         {
 421             PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0);
 422         }
 423
 424         vlc_thread_join( p_vout->p_sys->p_event );
 425         vlc_object_destroy( p_vout->p_sys->p_event );
 426     }
 427
 428     if( p_vout->p_sys )
 429     {
 430         free( p_vout->p_sys );
 431         p_vout->p_sys = NULL;
 432     }
 433 }
 434
 435 /*****************************************************************************
 436  * Manage: handle Sys events
 437  *****************************************************************************
 438  * This function should be called regularly by the video output thread.
 439  * It returns a non null value if an error occured.
 440  *****************************************************************************/
 441 static int Manage( vout_thread_t *p_vout )
 442 {
 443     WINDOWPLACEMENT window_placement;
 444
 445     /* If we do not control our window, we check for geometry changes
 446      * ourselves because the parent might not send us its events. */
 447     if( p_vout->p_sys->hparent )
 448     {
 449         DirectXUpdateRects( p_vout, VLC_FALSE );
 450     }
 451
 452     /*
 453      * Position Change
 454      */
 455     if( p_vout->p_sys->i_changes & DX_POSITION_CHANGE )
 456     {
 457         if( p_vout->p_sys->b_using_overlay )
 458             DirectXUpdateOverlay( p_vout );
 459
 460         /* Check if we are still on the same monitor */
 461         if( p_vout->p_sys->MonitorFromWindow &&
 462             p_vout->p_sys->hmonitor !=
 463                 p_vout->p_sys->MonitorFromWindow( p_vout->p_sys->hwnd,
 464                                                   MONITOR_DEFAULTTONEAREST ) )
 465         {
 466             /* This will force the vout core to recreate the picture buffers */
 467             p_vout->i_changes |= VOUT_PICTURE_BUFFERS_CHANGE;
 468         }
 469
 470         p_vout->p_sys->i_changes &= ~DX_POSITION_CHANGE;
 471     }
 472
 473     /* We used to call the Win32 PeekMessage function here to read the window
 474      * messages. But since window can stay blocked into this function for a
 475      * long time (for example when you move your window on the screen), I
 476      * decided to isolate PeekMessage in another thread. */
 477
 478     /*
 479      * Fullscreen change
 480      */
 481     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
 482         || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
 483     {
 484         vlc_value_t val;
 485
 486         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 487
 488         /* We need to switch between Maximized and Normal sized window */
 489         window_placement.length = sizeof(WINDOWPLACEMENT);
 490         GetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 491         if( p_vout->b_fullscreen )
 492         {
 493             /* Maximized window */
 494             window_placement.showCmd = SW_SHOWMAXIMIZED;
 495             /* Change window style, no borders and no title bar */
 496             SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE, WS_CLIPCHILDREN );
 497
 498         }
 499         else
 500         {
 501             /* Normal window */
 502             window_placement.showCmd = SW_SHOWNORMAL;
 503             /* Change window style, borders and title bar */
 504             SetWindowLong( p_vout->p_sys->hwnd, GWL_STYLE, WS_CLIPCHILDREN |
 505                            WS_OVERLAPPEDWINDOW | WS_SIZEBOX | WS_VISIBLE );
 506         }
 507
 508         SetWindowPlacement( p_vout->p_sys->hwnd, &window_placement );
 509
 510         /* Update the object variable and trigger callback */
 511         val.b_bool = p_vout->b_fullscreen;
 512         var_Set( p_vout, "fullscreen", val );
 513
 514         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 515         p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 516     }
 517
 518     /*
 519      * Pointer change
 520      */
 521     if( (!p_vout->p_sys->b_cursor_hidden) &&
 522         ( (mdate() - p_vout->p_sys->i_lastmoved) > 5000000 ) )
 523     {
 524         /* Hide the mouse automatically */
 525         if( p_vout->p_sys->hwnd != p_vout->p_sys->hparent )
 526         {
 527             p_vout->p_sys->b_cursor_hidden = VLC_TRUE;
 528             PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
 529         }
 530     }
 531
 532     /*
 533      * "Always on top" status change
 534      */
 535     if( p_vout->p_sys->b_on_top_change )
 536     {
 537         vlc_value_t val;
 538         HMENU hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );
 539
 540         var_Get( p_vout, "video-on-top", &val );
 541
 542         /* Set the window on top if necessary */
 543         if( val.b_bool && !( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
 544                            & WS_EX_TOPMOST ) )
 545         {
 546             CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
 547                            MF_BYCOMMAND | MFS_CHECKED );
 548             SetWindowPos( p_vout->p_sys->hwnd, HWND_TOPMOST, 0, 0, 0, 0,
 549                           SWP_NOSIZE | SWP_NOMOVE );
 550         }
 551         else
 552         /* The window shouldn't be on top */
 553         if( !val.b_bool && ( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
 554                            & WS_EX_TOPMOST ) )
 555         {
 556             CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
 557                            MF_BYCOMMAND | MFS_UNCHECKED );
 558             SetWindowPos( p_vout->p_sys->hwnd, HWND_NOTOPMOST, 0, 0, 0, 0,
 559                           SWP_NOSIZE | SWP_NOMOVE );
 560         }
 561
 562         p_vout->p_sys->b_on_top_change = VLC_FALSE;
 563     }
 564
 565     /* Check if the event thread is still running */
 566     if( p_vout->p_sys->p_event->b_die )
 567     {
 568         return VLC_EGENERIC; /* exit */
 569     }
 570
 571     return VLC_SUCCESS;
 572 }
 573
 574 /*****************************************************************************
 575  * Display: displays previously rendered output
 576  *****************************************************************************
 577  * This function sends the currently rendered image to the display, wait until
 578  * it is displayed and switch the two rendering buffers, preparing next frame.
 579  *****************************************************************************/
 580 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 581 {
 582     HRESULT dxresult;
 583
 584     if( (p_vout->p_sys->p_display == NULL) )
 585     {
 586         msg_Warn( p_vout, "no display!" );
 587         return;
 588     }
 589
 590     /* Our surface can be lost so be sure to check this
 591      * and restore it if need be */
 592     if( IDirectDrawSurface2_IsLost( p_vout->p_sys->p_display )
 593         == DDERR_SURFACELOST )
 594     {
 595         if( IDirectDrawSurface2_Restore( p_vout->p_sys->p_display ) == DD_OK &&
 596             p_vout->p_sys->b_using_overlay )
 597             DirectXUpdateOverlay( p_vout );
 598     }
 599
 600     if( !p_vout->p_sys->b_using_overlay )
 601     {
 602         DDBLTFX  ddbltfx;
 603
 604         /* We ask for the "NOTEARING" option */
 605         memset( &ddbltfx, 0, sizeof(DDBLTFX) );
 606         ddbltfx.dwSize = sizeof(DDBLTFX);
 607         ddbltfx.dwDDFX = DDBLTFX_NOTEARING;
 608
 609         /* Blit video surface to display */
 610         dxresult = IDirectDrawSurface2_Blt( p_vout->p_sys->p_display,
 611                                             &p_vout->p_sys->rect_dest_clipped,
 612                                             p_pic->p_sys->p_surface,
 613                                             &p_vout->p_sys->rect_src_clipped,
 614                                             DDBLT_ASYNC, &ddbltfx );
 615         if( dxresult != DD_OK )
 616         {
 617             msg_Warn( p_vout, "could not blit surface (error %li)", dxresult );
 618             return;
 619         }
 620
 621     }
 622     else /* using overlay */
 623     {
 624         /* Flip the overlay buffers if we are using back buffers */
 625         if( p_pic->p_sys->p_front_surface == p_pic->p_sys->p_surface )
 626         {
 627             return;
 628         }
 629
 630         dxresult = IDirectDrawSurface2_Flip( p_pic->p_sys->p_front_surface,
 631                                              NULL, DDFLIP_WAIT );
 632         if( dxresult != DD_OK )
 633         {
 634             msg_Warn( p_vout, "could not flip overlay (error %li)", dxresult );
 635         }
 636
 637         /* set currently displayed pic */
 638         p_vout->p_sys->p_current_surface = p_pic->p_sys->p_front_surface;
 639
 640         /* Lock surface to get all the required info */
 641         if( DirectXLockSurface( p_vout, p_pic ) )
 642         {
 643             /* AAARRGG */
 644             msg_Warn( p_vout, "cannot lock surface" );
 645             return;
 646         }
 647         DirectXUnlockSurface( p_vout, p_pic );
 648     }
 649 }
 650
 651 /* following functions are local */
 652
 653 /*****************************************************************************
 654  * DirectXEnumCallback: Device enumeration
 655  *****************************************************************************
 656  * This callback function is called by DirectDraw once for each
 657  * available DirectDraw device.
 658  *****************************************************************************/
 659 BOOL WINAPI DirectXEnumCallback( GUID* p_guid, LPTSTR psz_desc,
 660                                  LPTSTR psz_drivername, VOID* p_context,
 661                                  HMONITOR hmon )
 662 {
 663     vout_thread_t *p_vout = (vout_thread_t *)p_context;
 664     vlc_value_t device;
 665
 666     var_Get( p_vout, "directx-device", &device );
 667
 668     msg_Dbg( p_vout, "DirectXEnumCallback: %s, %s", psz_desc, psz_drivername );
 669
 670     if( hmon )
 671     {
 672         if( ( !device.psz_string || !device.psz_string ) &&
 673             hmon == p_vout->p_sys->hmonitor )
 674         {
 675             ;
 676         }
 677         else if( strcmp( psz_drivername, device.psz_string ) == 0 )
 678         {
 679             MONITORINFO monitor_info;
 680             monitor_info.cbSize = sizeof( MONITORINFO );
 681
 682             if( p_vout->p_sys->GetMonitorInfo( hmon, &monitor_info ) )
 683             {
 684                 RECT rect;
 685
 686                 /* Move window to the right screen */
 687                 GetWindowRect( p_vout->p_sys->hwnd, &rect );
 688                 if( !IntersectRect( &rect, &rect, &monitor_info.rcWork ) )
 689                 {
 690                     rect.left = monitor_info.rcWork.left;
 691                     rect.top = monitor_info.rcWork.top;
 692                     msg_Dbg( p_vout, "DirectXEnumCallback: Setting window "
 693                              "position to %d,%d", rect.left, rect.top );
 694                     SetWindowPos( p_vout->p_sys->hwnd, NULL,
 695                                   rect.left, rect.top, 0, 0,
 696                                   SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 697                 }
 698             }
 699
 700             p_vout->p_sys->hmonitor = hmon;
 701         }
 702         else return TRUE; /* Keep enumerating */
 703
 704         msg_Dbg( p_vout, "selecting %s, %s", psz_desc, psz_drivername );
 705         p_vout->p_sys->p_display_driver = malloc( sizeof(GUID) );
 706         if( p_vout->p_sys->p_display_driver )
 707             memcpy( p_vout->p_sys->p_display_driver, p_guid, sizeof(GUID) );
 708     }
 709
 710     return TRUE; /* Keep enumerating */
 711 }
 712
 713 /*****************************************************************************
 714  * DirectXInitDDraw: Takes care of all the DirectDraw initialisations
 715  *****************************************************************************
 716  * This function initialise and allocate resources for DirectDraw.
 717  *****************************************************************************/
 718 static int DirectXInitDDraw( vout_thread_t *p_vout )
 719 {
 720     HRESULT dxresult;
 721     HRESULT (WINAPI *OurDirectDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *);
 722     HRESULT (WINAPI *OurDirectDrawEnumerateEx)( LPDDENUMCALLBACKEXA, LPVOID,
 723                                                 DWORD );
 724     LPDIRECTDRAW p_ddobject;
 725
 726     msg_Dbg( p_vout, "DirectXInitDDraw" );
 727
 728     /* Load direct draw DLL */
 729     p_vout->p_sys->hddraw_dll = LoadLibrary("DDRAW.DLL");
 730     if( p_vout->p_sys->hddraw_dll == NULL )
 731     {
 732         msg_Warn( p_vout, "DirectXInitDDraw failed loading ddraw.dll" );
 733         goto error;
 734     }
 735
 736     OurDirectDrawCreate =
 737       (void *)GetProcAddress(p_vout->p_sys->hddraw_dll, "DirectDrawCreate");
 738     if( OurDirectDrawCreate == NULL )
 739     {
 740         msg_Err( p_vout, "DirectXInitDDraw failed GetProcAddress" );
 741         goto error;
 742     }
 743
 744     OurDirectDrawEnumerateEx =
 745       (void *)GetProcAddress( p_vout->p_sys->hddraw_dll,
 746                               "DirectDrawEnumerateExA" );
 747
 748     if( OurDirectDrawEnumerateEx && p_vout->p_sys->MonitorFromWindow )
 749     {
 750         vlc_value_t device;
 751
 752         var_Get( p_vout, "directx-device", &device );
 753         msg_Dbg( p_vout, "directx-device: %s", device.psz_string );
 754
 755         p_vout->p_sys->hmonitor =
 756             p_vout->p_sys->MonitorFromWindow( p_vout->p_sys->hwnd,
 757                                               MONITOR_DEFAULTTONEAREST );
 758
 759         /* Enumerate displays */
 760         OurDirectDrawEnumerateEx( DirectXEnumCallback, p_vout,
 761                                   DDENUM_ATTACHEDSECONDARYDEVICES );
 762     }
 763
 764     /* Initialize DirectDraw now */
 765     dxresult = OurDirectDrawCreate( p_vout->p_sys->p_display_driver,
 766                                     &p_ddobject, NULL );
 767     if( dxresult != DD_OK )
 768     {
 769         msg_Err( p_vout, "DirectXInitDDraw cannot initialize DDraw" );
 770         goto error;
 771     }
 772
 773     /* Get the IDirectDraw2 interface */
 774     dxresult = IDirectDraw_QueryInterface( p_ddobject, &IID_IDirectDraw2,
 775                                         (LPVOID *)&p_vout->p_sys->p_ddobject );
 776     /* Release the unused interface */
 777     IDirectDraw_Release( p_ddobject );
 778     if( dxresult != DD_OK )
 779     {
 780         msg_Err( p_vout, "cannot get IDirectDraw2 interface" );
 781         goto error;
 782     }
 783
 784     /* Set DirectDraw Cooperative level, ie what control we want over Windows
 785      * display */
 786     dxresult = IDirectDraw2_SetCooperativeLevel( p_vout->p_sys->p_ddobject,
 787                                                  NULL, DDSCL_NORMAL );
 788     if( dxresult != DD_OK )
 789     {
 790         msg_Err( p_vout, "cannot set direct draw cooperative level" );
 791         goto error;
 792     }
 793
 794     /* Get the size of the current display device */
 795     if( p_vout->p_sys->hmonitor && p_vout->p_sys->GetMonitorInfo )
 796     {
 797         MONITORINFO monitor_info;
 798         monitor_info.cbSize = sizeof( MONITORINFO );
 799         p_vout->p_sys->GetMonitorInfo( p_vout->p_sys->hmonitor,
 800                                        &monitor_info );
 801         p_vout->p_sys->rect_display = monitor_info.rcMonitor;
 802     }
 803     else
 804     {
 805         p_vout->p_sys->rect_display.left = 0;
 806         p_vout->p_sys->rect_display.top = 0;
 807         p_vout->p_sys->rect_display.right  = GetSystemMetrics(SM_CXSCREEN);
 808         p_vout->p_sys->rect_display.bottom = GetSystemMetrics(SM_CYSCREEN);
 809     }
 810
 811     msg_Dbg( p_vout, "screen dimensions (%ix%i,%ix%i)",
 812              p_vout->p_sys->rect_display.left,
 813              p_vout->p_sys->rect_display.top,
 814              p_vout->p_sys->rect_display.right,
 815              p_vout->p_sys->rect_display.bottom );
 816
 817     /* Probe the capabilities of the hardware */
 818     DirectXGetDDrawCaps( p_vout );
 819
 820     msg_Dbg( p_vout, "End DirectXInitDDraw" );
 821     return VLC_SUCCESS;
 822
 823  error:
 824     if( p_vout->p_sys->p_ddobject )
 825         IDirectDraw2_Release( p_vout->p_sys->p_ddobject );
 826     if( p_vout->p_sys->hddraw_dll )
 827         FreeLibrary( p_vout->p_sys->hddraw_dll );
 828     p_vout->p_sys->hddraw_dll = NULL;
 829     p_vout->p_sys->p_ddobject = NULL;
 830     return VLC_EGENERIC;
 831 }
 832
 833 /*****************************************************************************
 834  * DirectXCreateDisplay: create the DirectDraw display.
 835  *****************************************************************************
 836  * Create and initialize display according to preferences specified in the vout
 837  * thread fields.
 838  *****************************************************************************/
 839 static int DirectXCreateDisplay( vout_thread_t *p_vout )
 840 {
 841     HRESULT              dxresult;
 842     DDSURFACEDESC        ddsd;
 843     LPDIRECTDRAWSURFACE  p_display;
 844
 845     msg_Dbg( p_vout, "DirectXCreateDisplay" );
 846
 847     /* Now get the primary surface. This surface is what you actually see
 848      * on your screen */
 849     memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 850     ddsd.dwSize = sizeof(DDSURFACEDESC);
 851     ddsd.dwFlags = DDSD_CAPS;
 852     ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
 853
 854     dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 855                                            &ddsd, &p_display, NULL );
 856     if( dxresult != DD_OK )
 857     {
 858         msg_Err( p_vout, "cannot get primary surface (error %li)", dxresult );
 859         return VLC_EGENERIC;
 860     }
 861
 862     dxresult = IDirectDrawSurface_QueryInterface( p_display,
 863                                          &IID_IDirectDrawSurface2,
 864                                          (LPVOID *)&p_vout->p_sys->p_display );
 865     /* Release the old interface */
 866     IDirectDrawSurface_Release( p_display );
 867     if ( dxresult != DD_OK )
 868     {
 869         msg_Err( p_vout, "cannot query IDirectDrawSurface2 interface "
 870                          "(error %li)", dxresult );
 871         return VLC_EGENERIC;
 872     }
 873
 874     /* The clipper will be used only in non-overlay mode */
 875     DirectXCreateClipper( p_vout );
 876
 877     /* Make sure the colorkey will be painted */
 878     p_vout->p_sys->i_colorkey = 1;
 879     p_vout->p_sys->i_rgb_colorkey =
 880         DirectXFindColorkey( p_vout, p_vout->p_sys->i_colorkey );
 881
 882     /* Create the actual brush */
 883     SetClassLong( p_vout->p_sys->hvideownd, GCL_HBRBACKGROUND,
 884                   (LONG)CreateSolidBrush( p_vout->p_sys->i_rgb_colorkey ) );
 885     InvalidateRect( p_vout->p_sys->hvideownd, NULL, TRUE );
 886     DirectXUpdateRects( p_vout, VLC_TRUE );
 887
 888     return VLC_SUCCESS;
 889 }
 890
 891 /*****************************************************************************
 892  * DirectXCreateClipper: Create a clipper that will be used when blitting the
 893  *                       RGB surface to the main display.
 894  *****************************************************************************
 895  * This clipper prevents us to modify by mistake anything on the screen
 896  * which doesn't belong to our window. For example when a part of our video
 897  * window is hidden by another window.
 898  *****************************************************************************/
 899 static int DirectXCreateClipper( vout_thread_t *p_vout )
 900 {
 901     HRESULT dxresult;
 902
 903     msg_Dbg( p_vout, "DirectXCreateClipper" );
 904
 905     /* Create the clipper */
 906     dxresult = IDirectDraw2_CreateClipper( p_vout->p_sys->p_ddobject, 0,
 907                                            &p_vout->p_sys->p_clipper, NULL );
 908     if( dxresult != DD_OK )
 909     {
 910         msg_Warn( p_vout, "cannot create clipper (error %li)", dxresult );
 911         goto error;
 912     }
 913
 914     /* Associate the clipper to the window */
 915     dxresult = IDirectDrawClipper_SetHWnd( p_vout->p_sys->p_clipper, 0,
 916                                            p_vout->p_sys->hvideownd );
 917     if( dxresult != DD_OK )
 918     {
 919         msg_Warn( p_vout, "cannot attach clipper to window (error %li)",
 920                           dxresult );
 921         goto error;
 922     }
 923
 924     /* associate the clipper with the surface */
 925     dxresult = IDirectDrawSurface_SetClipper(p_vout->p_sys->p_display,
 926                                              p_vout->p_sys->p_clipper);
 927     if( dxresult != DD_OK )
 928     {
 929         msg_Warn( p_vout, "cannot attach clipper to surface (error %li)",
 930                           dxresult );
 931         goto error;
 932     }
 933
 934     return VLC_SUCCESS;
 935
 936  error:
 937     if( p_vout->p_sys->p_clipper )
 938     {
 939         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
 940     }
 941     p_vout->p_sys->p_clipper = NULL;
 942     return VLC_EGENERIC;
 943 }
 944
 945 /*****************************************************************************
 946  * DirectXCreateSurface: create an YUV overlay or RGB surface for the video.
 947  *****************************************************************************
 948  * The best method of display is with an YUV overlay because the YUV->RGB
 949  * conversion is done in hardware.
 950  * You can also create a plain RGB surface.
 951  * ( Maybe we could also try an RGB overlay surface, which could have hardware
 952  * scaling and which would also be faster in window mode because you don't
 953  * need to do any blitting to the main display...)
 954  *****************************************************************************/
 955 static int DirectXCreateSurface( vout_thread_t *p_vout,
 956                                  LPDIRECTDRAWSURFACE2 *pp_surface_final,
 957                                  int i_chroma, int b_overlay,
 958                                  int i_backbuffers )
 959 {
 960     HRESULT dxresult;
 961     LPDIRECTDRAWSURFACE p_surface;
 962     DDSURFACEDESC ddsd;
 963
 964     /* Create the video surface */
 965     if( b_overlay )
 966     {
 967         /* Now try to create the YUV overlay surface.
 968          * This overlay will be displayed on top of the primary surface.
 969          * A color key is used to determine whether or not the overlay will be
 970          * displayed, ie the overlay will be displayed in place of the primary
 971          * surface wherever the primary surface will have this color.
 972          * The video window has been created with a background of this color so
 973          * the overlay will be only displayed on top of this window */
 974
 975         memset( &ddsd, 0, sizeof( DDSURFACEDESC ));
 976         ddsd.dwSize = sizeof(DDSURFACEDESC);
 977         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
 978         ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
 979         ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
 980         ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
 981         ddsd.dwFlags |= (i_backbuffers ? DDSD_BACKBUFFERCOUNT : 0);
 982         ddsd.ddsCaps.dwCaps = DDSCAPS_OVERLAY | DDSCAPS_VIDEOMEMORY;
 983         ddsd.ddsCaps.dwCaps |= (i_backbuffers ? DDSCAPS_COMPLEX | DDSCAPS_FLIP
 984                                 : 0 );
 985         ddsd.dwHeight = p_vout->render.i_height;
 986         ddsd.dwWidth = p_vout->render.i_width;
 987         ddsd.dwBackBufferCount = i_backbuffers;
 988
 989         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
 990                                                &ddsd, &p_surface, NULL );
 991         if( dxresult != DD_OK )
 992         {
 993             *pp_surface_final = NULL;
 994             return VLC_EGENERIC;
 995         }
 996     }
 997
 998     if( !b_overlay )
 999     {
1000         vlc_bool_t b_rgb_surface =
1001             ( i_chroma == VLC_FOURCC('R','G','B','2') )
1002           || ( i_chroma == VLC_FOURCC('R','V','1','5') )
1003            || ( i_chroma == VLC_FOURCC('R','V','1','6') )
1004             || ( i_chroma == VLC_FOURCC('R','V','2','4') )
1005              || ( i_chroma == VLC_FOURCC('R','V','3','2') );
1006
1007         memset( &ddsd, 0, sizeof( DDSURFACEDESC ) );
1008         ddsd.dwSize = sizeof(DDSURFACEDESC);
1009         ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1010         ddsd.dwFlags = DDSD_HEIGHT | DDSD_WIDTH | DDSD_CAPS;
1011         ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
1012         ddsd.dwHeight = p_vout->render.i_height;
1013         ddsd.dwWidth = p_vout->render.i_width;
1014
1015         if( p_vout->p_sys->b_use_sysmem )
1016             ddsd.ddsCaps.dwCaps |= DDSCAPS_SYSTEMMEMORY;
1017         else
1018             ddsd.ddsCaps.dwCaps |= DDSCAPS_VIDEOMEMORY;
1019
1020         if( !b_rgb_surface )
1021         {
1022             ddsd.dwFlags |= DDSD_PIXELFORMAT;
1023             ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
1024             ddsd.ddpfPixelFormat.dwFourCC = i_chroma;
1025         }
1026
1027         dxresult = IDirectDraw2_CreateSurface( p_vout->p_sys->p_ddobject,
1028                                                &ddsd, &p_surface, NULL );
1029         if( dxresult != DD_OK )
1030         {
1031             *pp_surface_final = NULL;
1032             return VLC_EGENERIC;
1033         }
1034     }
1035
1036     /* Now that the surface is created, try to get a newer DirectX interface */
1037     dxresult = IDirectDrawSurface_QueryInterface( p_surface,
1038                                      &IID_IDirectDrawSurface2,
1039                                      (LPVOID *)pp_surface_final );
1040     IDirectDrawSurface_Release( p_surface );    /* Release the old interface */
1041     if ( dxresult != DD_OK )
1042     {
1043         msg_Err( p_vout, "cannot query IDirectDrawSurface2 interface "
1044                          "(error %li)", dxresult );
1045         *pp_surface_final = NULL;
1046         return VLC_EGENERIC;
1047     }
1048
1049     if( b_overlay )
1050     {
1051         /* Check the overlay is useable as some graphics cards allow creating
1052          * several overlays but only one can be used at one time. */
1053         p_vout->p_sys->p_current_surface = *pp_surface_final;
1054         if( DirectXUpdateOverlay( p_vout ) != VLC_SUCCESS )
1055         {
1056             IDirectDrawSurface2_Release( *pp_surface_final );
1057             *pp_surface_final = NULL;
1058             msg_Err( p_vout, "overlay unuseable (might already be in use)" );
1059             return VLC_EGENERIC;
1060         }
1061     }
1062
1063     return VLC_SUCCESS;
1064 }
1065
1066 /*****************************************************************************
1067  * DirectXUpdateOverlay: Move or resize overlay surface on video display.
1068  *****************************************************************************
1069  * This function is used to move or resize an overlay surface on the screen.
1070  * Ususally the overlay is moved by the user and thus, by a move or resize
1071  * event (in Manage).
1072  *****************************************************************************/
1073 int DirectXUpdateOverlay( vout_thread_t *p_vout )
1074 {
1075     DDOVERLAYFX     ddofx;
1076     DWORD           dwFlags;
1077     HRESULT         dxresult;
1078
1079     if( p_vout->p_sys->p_current_surface == NULL ||
1080         !p_vout->p_sys->b_using_overlay )
1081         return VLC_EGENERIC;
1082
1083     /* The new window dimensions should already have been computed by the
1084      * caller of this function */
1085
1086     /* Position and show the overlay */
1087     memset(&ddofx, 0, sizeof(DDOVERLAYFX));
1088     ddofx.dwSize = sizeof(DDOVERLAYFX);
1089     ddofx.dckDestColorkey.dwColorSpaceLowValue = p_vout->p_sys->i_colorkey;
1090     ddofx.dckDestColorkey.dwColorSpaceHighValue = p_vout->p_sys->i_colorkey;
1091
1092     dwFlags = DDOVER_SHOW | DDOVER_KEYDESTOVERRIDE;
1093
1094     dxresult = IDirectDrawSurface2_UpdateOverlay(
1095                                          p_vout->p_sys->p_current_surface,
1096                                          &p_vout->p_sys->rect_src_clipped,
1097                                          p_vout->p_sys->p_display,
1098                                          &p_vout->p_sys->rect_dest_clipped,
1099                                          dwFlags, &ddofx );
1100     if(dxresult != DD_OK)
1101     {
1102         msg_Warn( p_vout,
1103                   "DirectXUpdateOverlay cannot move or resize overlay" );
1104         return VLC_EGENERIC;
1105     }
1106
1107     return VLC_SUCCESS;
1108 }
1109
1110 /*****************************************************************************
1111  * DirectXCloseDDraw: Release the DDraw object allocated by DirectXInitDDraw
1112  *****************************************************************************
1113  * This function returns all resources allocated by DirectXInitDDraw.
1114  *****************************************************************************/
1115 static void DirectXCloseDDraw( vout_thread_t *p_vout )
1116 {
1117     msg_Dbg( p_vout, "DirectXCloseDDraw" );
1118     if( p_vout->p_sys->p_ddobject != NULL )
1119     {
1120         IDirectDraw2_Release(p_vout->p_sys->p_ddobject);
1121         p_vout->p_sys->p_ddobject = NULL;
1122     }
1123
1124     if( p_vout->p_sys->hddraw_dll != NULL )
1125     {
1126         FreeLibrary( p_vout->p_sys->hddraw_dll );
1127         p_vout->p_sys->hddraw_dll = NULL;
1128     }
1129
1130     if( p_vout->p_sys->p_display_driver != NULL )
1131     {
1132         free( p_vout->p_sys->p_display_driver );
1133         p_vout->p_sys->p_display_driver = NULL;
1134     }
1135
1136     p_vout->p_sys->hmonitor = NULL;
1137 }
1138
1139 /*****************************************************************************
1140  * DirectXCloseDisplay: close and reset the DirectX display device
1141  *****************************************************************************
1142  * This function returns all resources allocated by DirectXCreateDisplay.
1143  *****************************************************************************/
1144 static void DirectXCloseDisplay( vout_thread_t *p_vout )
1145 {
1146     msg_Dbg( p_vout, "DirectXCloseDisplay" );
1147
1148     if( p_vout->p_sys->p_clipper != NULL )
1149     {
1150         msg_Dbg( p_vout, "DirectXCloseDisplay clipper" );
1151         IDirectDrawClipper_Release( p_vout->p_sys->p_clipper );
1152         p_vout->p_sys->p_clipper = NULL;
1153     }
1154
1155     if( p_vout->p_sys->p_display != NULL )
1156     {
1157         msg_Dbg( p_vout, "DirectXCloseDisplay display" );
1158         IDirectDrawSurface2_Release( p_vout->p_sys->p_display );
1159         p_vout->p_sys->p_display = NULL;
1160     }
1161 }
1162
1163 /*****************************************************************************
1164  * DirectXCloseSurface: close the YUV overlay or RGB surface.
1165  *****************************************************************************
1166  * This function returns all resources allocated for the surface.
1167  *****************************************************************************/
1168 static void DirectXCloseSurface( vout_thread_t *p_vout,
1169                                  LPDIRECTDRAWSURFACE2 p_surface )
1170 {
1171     msg_Dbg( p_vout, "DirectXCloseSurface" );
1172     if( p_surface != NULL )
1173     {
1174         IDirectDrawSurface2_Release( p_surface );
1175     }
1176 }
1177
1178 /*****************************************************************************
1179  * NewPictureVec: allocate a vector of identical pictures
1180  *****************************************************************************
1181  * Returns 0 on success, -1 otherwise
1182  *****************************************************************************/
1183 static int NewPictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1184                           int i_num_pics )
1185 {
1186     int i;
1187     int i_ret = VLC_SUCCESS;
1188     LPDIRECTDRAWSURFACE2 p_surface;
1189
1190     msg_Dbg( p_vout, "NewPictureVec overlay:%s chroma:%.4s",
1191              p_vout->p_sys->b_using_overlay ? "yes" : "no",
1192              (char *)&p_vout->output.i_chroma );
1193
1194     I_OUTPUTPICTURES = 0;
1195
1196     /* First we try to use an YUV overlay surface.
1197      * The overlay surface that we create won't be used to decode directly
1198      * into it because accessing video memory directly is way to slow (remember
1199      * that pictures are decoded macroblock per macroblock). Instead the video
1200      * will be decoded in picture buffers in system memory which will then be
1201      * memcpy() to the overlay surface. */
1202     if( p_vout->p_sys->b_using_overlay )
1203     {
1204         /* Triple buffering rocks! it doesn't have any processing overhead
1205          * (you don't have to wait for the vsync) and provides for a very nice
1206          * video quality (no tearing). */
1207         if( p_vout->p_sys->b_3buf_overlay )
1208             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1209                                           p_vout->output.i_chroma,
1210                                           p_vout->p_sys->b_using_overlay,
1211                                           2 /* number of backbuffers */ );
1212
1213         if( !p_vout->p_sys->b_3buf_overlay || i_ret != VLC_SUCCESS )
1214         {
1215             /* Try to reduce the number of backbuffers */
1216             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1217                                           p_vout->output.i_chroma,
1218                                           p_vout->p_sys->b_using_overlay,
1219                                           0 /* number of backbuffers */ );
1220         }
1221
1222         if( i_ret == VLC_SUCCESS )
1223         {
1224             DDSCAPS dds_caps;
1225             picture_t front_pic;
1226             picture_sys_t front_pic_sys;
1227             front_pic.p_sys = &front_pic_sys;
1228
1229             /* Allocate internal structure */
1230             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1231             if( p_pic[0].p_sys == NULL )
1232             {
1233                 DirectXCloseSurface( p_vout, p_surface );
1234                 return VLC_ENOMEM;
1235             }
1236
1237             /* set front buffer */
1238             p_pic[0].p_sys->p_front_surface = p_surface;
1239
1240             /* Get the back buffer */
1241             memset( &dds_caps, 0, sizeof( DDSCAPS ) );
1242             dds_caps.dwCaps = DDSCAPS_BACKBUFFER;
1243             if( DD_OK != IDirectDrawSurface2_GetAttachedSurface(
1244                                                 p_surface, &dds_caps,
1245                                                 &p_pic[0].p_sys->p_surface ) )
1246             {
1247                 msg_Warn( p_vout, "NewPictureVec could not get back buffer" );
1248                 /* front buffer is the same as back buffer */
1249                 p_pic[0].p_sys->p_surface = p_surface;
1250             }
1251
1252
1253             p_vout->p_sys->p_current_surface = front_pic.p_sys->p_surface =
1254                 p_pic[0].p_sys->p_front_surface;
1255
1256             /* Reset the front buffer memory */
1257             if( DirectXLockSurface( p_vout, &front_pic ) == VLC_SUCCESS )
1258             {
1259                 int i,j;
1260                 for( i = 0; i < front_pic.i_planes; i++ )
1261                     for( j = 0; j < front_pic.p[i].i_lines; j++)
1262                         memset( front_pic.p[i].p_pixels + j *
1263                                 front_pic.p[i].i_pitch, 127,
1264                                 front_pic.p[i].i_visible_pitch );
1265
1266                 DirectXUnlockSurface( p_vout, &front_pic );
1267             }
1268
1269             DirectXUpdateOverlay( p_vout );
1270             I_OUTPUTPICTURES = 1;
1271             msg_Dbg( p_vout, "YUV overlay created successfully" );
1272         }
1273     }
1274
1275     /* As we can't have an overlay, we'll try to create a plain offscreen
1276      * surface. This surface will reside in video memory because there's a
1277      * better chance then that we'll be able to use some kind of hardware
1278      * acceleration like rescaling, blitting or YUV->RGB conversions.
1279      * We then only need to blit this surface onto the main display when we
1280      * want to display it */
1281     if( !p_vout->p_sys->b_using_overlay )
1282     {
1283         if( p_vout->p_sys->b_hw_yuv )
1284         {
1285             DWORD i_codes;
1286             DWORD *pi_codes;
1287             vlc_bool_t b_result = VLC_FALSE;
1288
1289             /* Check if the chroma is supported first. This is required
1290              * because a few buggy drivers don't mind creating the surface
1291              * even if they don't know about the chroma. */
1292             if( IDirectDraw2_GetFourCCCodes( p_vout->p_sys->p_ddobject,
1293                                              &i_codes, NULL ) == DD_OK )
1294             {
1295                 pi_codes = malloc( i_codes * sizeof(DWORD) );
1296                 if( pi_codes && IDirectDraw2_GetFourCCCodes(
1297                     p_vout->p_sys->p_ddobject, &i_codes, pi_codes ) == DD_OK )
1298                 {
1299                     for( i = 0; i < (int)i_codes; i++ )
1300                     {
1301                         if( p_vout->output.i_chroma == pi_codes[i] )
1302                         {
1303                             b_result = VLC_TRUE;
1304                             break;
1305                         }
1306                     }
1307                 }
1308             }
1309
1310             if( b_result )
1311                 i_ret = DirectXCreateSurface( p_vout, &p_surface,
1312                                               p_vout->output.i_chroma,
1313                                               0 /* no overlay */,
1314                                               0 /* no back buffers */ );
1315             else
1316                 p_vout->p_sys->b_hw_yuv = VLC_FALSE;
1317         }
1318
1319         if( i_ret || !p_vout->p_sys->b_hw_yuv )
1320         {
1321             /* Our last choice is to use a plain RGB surface */
1322             DDPIXELFORMAT ddpfPixelFormat;
1323
1324             ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
1325             IDirectDrawSurface2_GetPixelFormat( p_vout->p_sys->p_display,
1326                                                 &ddpfPixelFormat );
1327
1328             if( ddpfPixelFormat.dwFlags & DDPF_RGB )
1329             {
1330                 switch( ddpfPixelFormat.dwRGBBitCount )
1331                 {
1332                 case 8: /* FIXME: set the palette */
1333                     p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
1334                     break;
1335                 case 15:
1336                     p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
1337                     break;
1338                 case 16:
1339                     p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
1340                     break;
1341                 case 24:
1342                     p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
1343                     break;
1344                 case 32:
1345                     p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
1346                     break;
1347                 default:
1348                     msg_Err( p_vout, "unknown screen depth" );
1349                     return VLC_EGENERIC;
1350                 }
1351                 p_vout->output.i_rmask = ddpfPixelFormat.dwRBitMask;
1352                 p_vout->output.i_gmask = ddpfPixelFormat.dwGBitMask;
1353                 p_vout->output.i_bmask = ddpfPixelFormat.dwBBitMask;
1354             }
1355
1356             p_vout->p_sys->b_hw_yuv = 0;
1357
1358             i_ret = DirectXCreateSurface( p_vout, &p_surface,
1359                                           p_vout->output.i_chroma,
1360                                           0 /* no overlay */,
1361                                           0 /* no back buffers */ );
1362
1363             if( i_ret && !p_vout->p_sys->b_use_sysmem )
1364             {
1365                 /* Give it a last try with b_use_sysmem enabled */
1366                 p_vout->p_sys->b_use_sysmem = 1;
1367
1368                 i_ret = DirectXCreateSurface( p_vout, &p_surface,
1369                                               p_vout->output.i_chroma,
1370                                               0 /* no overlay */,
1371                                               0 /* no back buffers */ );
1372             }
1373         }
1374
1375         if( i_ret == VLC_SUCCESS )
1376         {
1377             /* Allocate internal structure */
1378             p_pic[0].p_sys = malloc( sizeof( picture_sys_t ) );
1379             if( p_pic[0].p_sys == NULL )
1380             {
1381                 DirectXCloseSurface( p_vout, p_surface );
1382                 return VLC_ENOMEM;
1383             }
1384
1385             p_pic[0].p_sys->p_surface = p_pic[0].p_sys->p_front_surface
1386                 = p_surface;
1387
1388             I_OUTPUTPICTURES = 1;
1389
1390             msg_Dbg( p_vout, "created plain surface of chroma:%.4s",
1391                      (char *)&p_vout->output.i_chroma );
1392         }
1393     }
1394
1395
1396     /* Now that we've got all our direct-buffers, we can finish filling in the
1397      * picture_t structures */
1398     for( i = 0; i < I_OUTPUTPICTURES; i++ )
1399     {
1400         p_pic[i].i_status = DESTROYED_PICTURE;
1401         p_pic[i].i_type   = DIRECT_PICTURE;
1402         p_pic[i].pf_lock  = DirectXLockSurface;
1403         p_pic[i].pf_unlock = DirectXUnlockSurface;
1404         PP_OUTPUTPICTURE[i] = &p_pic[i];
1405
1406         if( DirectXLockSurface( p_vout, &p_pic[i] ) != VLC_SUCCESS )
1407         {
1408             /* AAARRGG */
1409             FreePictureVec( p_vout, p_pic, I_OUTPUTPICTURES );
1410             I_OUTPUTPICTURES = 0;
1411             msg_Err( p_vout, "cannot lock surface" );
1412             return VLC_EGENERIC;
1413         }
1414         DirectXUnlockSurface( p_vout, &p_pic[i] );
1415     }
1416
1417     msg_Dbg( p_vout, "End NewPictureVec (%s)",
1418              I_OUTPUTPICTURES ? "succeeded" : "failed" );
1419
1420     return VLC_SUCCESS;
1421 }
1422
1423 /*****************************************************************************
1424  * FreePicture: destroy a picture vector allocated with NewPictureVec
1425  *****************************************************************************
1426  *
1427  *****************************************************************************/
1428 static void FreePictureVec( vout_thread_t *p_vout, picture_t *p_pic,
1429                             int i_num_pics )
1430 {
1431     int i;
1432
1433     for( i = 0; i < i_num_pics; i++ )
1434     {
1435         DirectXCloseSurface( p_vout, p_pic[i].p_sys->p_front_surface );
1436
1437         for( i = 0; i < i_num_pics; i++ )
1438         {
1439             free( p_pic[i].p_sys );
1440         }
1441     }
1442
1443     p_vout->p_sys->p_current_surface = 0;
1444 }
1445
1446 /*****************************************************************************
1447  * UpdatePictureStruct: updates the internal data in the picture_t structure
1448  *****************************************************************************
1449  * This will setup stuff for use by the video_output thread
1450  *****************************************************************************/
1451 static int UpdatePictureStruct( vout_thread_t *p_vout, picture_t *p_pic,
1452                                 int i_chroma )
1453 {
1454     switch( p_vout->output.i_chroma )
1455     {
1456         case VLC_FOURCC('R','G','B','2'):
1457         case VLC_FOURCC('R','V','1','5'):
1458         case VLC_FOURCC('R','V','1','6'):
1459         case VLC_FOURCC('R','V','2','4'):
1460         case VLC_FOURCC('R','V','3','2'):
1461             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1462             p_pic->p->i_lines = p_vout->output.i_height;
1463             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1464             switch( p_vout->output.i_chroma )
1465             {
1466                 case VLC_FOURCC('R','G','B','2'):
1467                     p_pic->p->i_pixel_pitch = 1;
1468                     break;
1469                 case VLC_FOURCC('R','V','1','5'):
1470                 case VLC_FOURCC('R','V','1','6'):
1471                     p_pic->p->i_pixel_pitch = 2;
1472                     break;
1473                 case VLC_FOURCC('R','V','2','4'):
1474                     p_pic->p->i_pixel_pitch = 3;
1475                     break;
1476                 case VLC_FOURCC('R','V','3','2'):
1477                     p_pic->p->i_pixel_pitch = 4;
1478                     break;
1479                 default:
1480                     return VLC_EGENERIC;
1481             }
1482             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1483               p_pic->p->i_pixel_pitch;
1484             p_pic->i_planes = 1;
1485             break;
1486
1487         case VLC_FOURCC('Y','V','1','2'):
1488
1489             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1490             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1491             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1492             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1493             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1494               p_pic->p[Y_PLANE].i_pixel_pitch;
1495
1496             p_pic->V_PIXELS =  p_pic->Y_PIXELS
1497               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1498             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1499             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1500             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1501             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1502               p_pic->p[V_PLANE].i_pixel_pitch;
1503
1504             p_pic->U_PIXELS = p_pic->V_PIXELS
1505               + p_pic->p[V_PLANE].i_lines * p_pic->p[V_PLANE].i_pitch;
1506             p_pic->p[U_PLANE].i_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->i_planes = 3;
1513             break;
1514
1515         case VLC_FOURCC('I','Y','U','V'):
1516
1517             p_pic->Y_PIXELS = p_pic->p_sys->ddsd.lpSurface;
1518             p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
1519             p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->ddsd.lPitch;
1520             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1521             p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width *
1522               p_pic->p[Y_PLANE].i_pixel_pitch;
1523
1524             p_pic->U_PIXELS = p_pic->Y_PIXELS
1525               + p_pic->p[Y_PLANE].i_lines * p_pic->p[Y_PLANE].i_pitch;
1526             p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
1527             p_pic->p[U_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1528             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1529             p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1530               p_pic->p[U_PLANE].i_pixel_pitch;
1531
1532             p_pic->V_PIXELS =  p_pic->U_PIXELS
1533               + p_pic->p[U_PLANE].i_lines * p_pic->p[U_PLANE].i_pitch;
1534             p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
1535             p_pic->p[V_PLANE].i_pitch = p_pic->p[Y_PLANE].i_pitch / 2;
1536             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1537             p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width / 2 *
1538               p_pic->p[V_PLANE].i_pixel_pitch;
1539
1540             p_pic->i_planes = 3;
1541             break;
1542
1543         case VLC_FOURCC('Y','U','Y','2'):
1544
1545             p_pic->p->p_pixels = p_pic->p_sys->ddsd.lpSurface;
1546             p_pic->p->i_lines = p_vout->output.i_height;
1547             p_pic->p->i_pitch = p_pic->p_sys->ddsd.lPitch;
1548             p_pic->p->i_pixel_pitch = 2;
1549             p_pic->p->i_visible_pitch = p_vout->output.i_width *
1550               p_pic->p->i_pixel_pitch;
1551
1552             p_pic->i_planes = 1;
1553             break;
1554
1555         default:
1556             /* Unknown chroma, tell the guy to get lost */
1557             msg_Err( p_vout, "never heard of chroma 0x%.8x (%4.4s)",
1558                      p_vout->output.i_chroma,
1559                      (char*)&p_vout->output.i_chroma );
1560             return VLC_EGENERIC;
1561     }
1562
1563     return VLC_SUCCESS;
1564 }
1565
1566 /*****************************************************************************
1567  * DirectXGetDDrawCaps: Probe the capabilities of the hardware
1568  *****************************************************************************
1569  * It is nice to know which features are supported by the hardware so we can
1570  * find ways to optimize our rendering.
1571  *****************************************************************************/
1572 static void DirectXGetDDrawCaps( vout_thread_t *p_vout )
1573 {
1574     DDCAPS ddcaps;
1575     HRESULT dxresult;
1576
1577     /* This is just an indication of whether or not we'll support overlay,
1578      * but with this test we don't know if we support YUV overlay */
1579     memset( &ddcaps, 0, sizeof( DDCAPS ));
1580     ddcaps.dwSize = sizeof(DDCAPS);
1581     dxresult = IDirectDraw2_GetCaps( p_vout->p_sys->p_ddobject,
1582                                      &ddcaps, NULL );
1583     if(dxresult != DD_OK )
1584     {
1585         msg_Warn( p_vout, "cannot get caps" );
1586     }
1587     else
1588     {
1589         BOOL bHasOverlay, bHasOverlayFourCC, bCanDeinterlace,
1590              bHasColorKey, bCanStretch, bCanBltFourcc;
1591
1592         /* Determine if the hardware supports overlay surfaces */
1593         bHasOverlay = ((ddcaps.dwCaps & DDCAPS_OVERLAY) ==
1594                        DDCAPS_OVERLAY) ? TRUE : FALSE;
1595         /* Determine if the hardware supports overlay surfaces */
1596         bHasOverlayFourCC = ((ddcaps.dwCaps & DDCAPS_OVERLAYFOURCC) ==
1597                        DDCAPS_OVERLAYFOURCC) ? TRUE : FALSE;
1598         /* Determine if the hardware supports overlay deinterlacing */
1599         bCanDeinterlace = ((ddcaps.dwCaps & DDCAPS2_CANFLIPODDEVEN) ==
1600                        0 ) ? TRUE : FALSE;
1601         /* Determine if the hardware supports colorkeying */
1602         bHasColorKey = ((ddcaps.dwCaps & DDCAPS_COLORKEY) ==
1603                         DDCAPS_COLORKEY) ? TRUE : FALSE;
1604         /* Determine if the hardware supports scaling of the overlay surface */
1605         bCanStretch = ((ddcaps.dwCaps & DDCAPS_OVERLAYSTRETCH) ==
1606                        DDCAPS_OVERLAYSTRETCH) ? TRUE : FALSE;
1607         /* Determine if the hardware supports color conversion during a blit */
1608         bCanBltFourcc = ((ddcaps.dwCaps & DDCAPS_BLTFOURCC ) ==
1609                         DDCAPS_BLTFOURCC) ? TRUE : FALSE;
1610
1611         msg_Dbg( p_vout, "DirectDraw Capabilities: overlay=%i yuvoverlay=%i "
1612                          "can_deinterlace_overlay=%i colorkey=%i stretch=%i "
1613                          "bltfourcc=%i",
1614                          bHasOverlay, bHasOverlayFourCC, bCanDeinterlace,
1615                          bHasColorKey, bCanStretch, bCanBltFourcc );
1616
1617         /* Don't ask for troubles */
1618         if( !bCanBltFourcc ) p_vout->p_sys->b_hw_yuv = FALSE;
1619     }
1620 }
1621
1622 /*****************************************************************************
1623  * DirectXLockSurface: Lock surface and get picture data pointer
1624  *****************************************************************************
1625  * This function locks a surface and get the surface descriptor which amongst
1626  * other things has the pointer to the picture data.
1627  *****************************************************************************/
1628 static int DirectXLockSurface( vout_thread_t *p_vout, picture_t *p_pic )
1629 {
1630     HRESULT dxresult;
1631
1632     /* Lock the surface to get a valid pointer to the picture buffer */
1633     memset( &p_pic->p_sys->ddsd, 0, sizeof( DDSURFACEDESC ));
1634     p_pic->p_sys->ddsd.dwSize = sizeof(DDSURFACEDESC);
1635     dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface,
1636                                          NULL, &p_pic->p_sys->ddsd,
1637                                          DDLOCK_NOSYSLOCK | DDLOCK_WAIT,
1638                                          NULL );
1639     if( dxresult != DD_OK )
1640     {
1641         if( dxresult == DDERR_INVALIDPARAMS )
1642         {
1643             /* DirectX 3 doesn't support the DDLOCK_NOSYSLOCK flag, resulting
1644              * in an invalid params error */
1645             dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1646                                              &p_pic->p_sys->ddsd,
1647                                              DDLOCK_WAIT, NULL);
1648         }
1649         if( dxresult == DDERR_SURFACELOST )
1650         {
1651             /* Your surface can be lost so be sure
1652              * to check this and restore it if needed */
1653
1654             /* When using overlays with back-buffers, we need to restore
1655              * the front buffer so the back-buffers get restored as well. */
1656             if( p_vout->p_sys->b_using_overlay  )
1657                 IDirectDrawSurface2_Restore( p_pic->p_sys->p_front_surface );
1658             else
1659                 IDirectDrawSurface2_Restore( p_pic->p_sys->p_surface );
1660
1661             dxresult = IDirectDrawSurface2_Lock( p_pic->p_sys->p_surface, NULL,
1662                                                  &p_pic->p_sys->ddsd,
1663                                                  DDLOCK_WAIT, NULL);
1664             if( dxresult == DDERR_SURFACELOST )
1665                 msg_Dbg( p_vout, "DirectXLockSurface: DDERR_SURFACELOST" );
1666         }
1667         if( dxresult != DD_OK )
1668         {
1669             return VLC_EGENERIC;
1670         }
1671     }
1672
1673     /* Now we have a pointer to the surface memory, we can update our picture
1674      * structure. */
1675     if( UpdatePictureStruct( p_vout, p_pic, p_vout->output.i_chroma )
1676         != VLC_SUCCESS )
1677     {
1678         DirectXUnlockSurface( p_vout, p_pic );
1679         return VLC_EGENERIC;
1680     }
1681     else
1682         return VLC_SUCCESS;
1683 }
1684
1685 /*****************************************************************************
1686  * DirectXUnlockSurface: Unlock a surface locked by DirectXLockSurface().
1687  *****************************************************************************/
1688 static int DirectXUnlockSurface( vout_thread_t *p_vout, picture_t *p_pic )
1689 {
1690     /* Unlock the Surface */
1691     if( IDirectDrawSurface2_Unlock( p_pic->p_sys->p_surface, NULL ) == DD_OK )
1692         return VLC_SUCCESS;
1693     else
1694         return VLC_EGENERIC;
1695 }
1696
1697 /*****************************************************************************
1698  * DirectXFindColorkey: Finds out the 32bits RGB pixel value of the colorkey
1699  *****************************************************************************/
1700 static DWORD DirectXFindColorkey( vout_thread_t *p_vout, uint32_t i_color )
1701 {
1702     DDSURFACEDESC ddsd;
1703     HRESULT dxresult;
1704     COLORREF i_rgb = 0;
1705     uint32_t i_pixel_backup;
1706     HDC hdc;
1707
1708     ddsd.dwSize = sizeof(ddsd);
1709     dxresult = IDirectDrawSurface2_Lock( p_vout->p_sys->p_display, NULL,
1710                                          &ddsd, DDLOCK_WAIT, NULL );
1711     if( dxresult != DD_OK ) return 0;
1712
1713     i_pixel_backup = *(uint32_t *)ddsd.lpSurface;
1714
1715     switch( ddsd.ddpfPixelFormat.dwRGBBitCount )
1716     {
1717     case 4:
1718         *(uint8_t *)ddsd.lpSurface = 0x11;
1719         break;
1720     case 8:
1721         *(uint8_t *)ddsd.lpSurface = 0x01;
1722         break;
1723     case 16:
1724         *(uint16_t *)ddsd.lpSurface = 0x01;
1725         break;
1726     default:
1727         *(uint32_t *)ddsd.lpSurface = 0x01;
1728         break;
1729     }
1730
1731     IDirectDrawSurface2_Unlock( p_vout->p_sys->p_display, NULL );
1732
1733     if( IDirectDrawSurface2_GetDC( p_vout->p_sys->p_display, &hdc ) == DD_OK )
1734     {
1735         i_rgb = GetPixel( hdc, 0, 0 );
1736         IDirectDrawSurface2_ReleaseDC( p_vout->p_sys->p_display, hdc );
1737     }
1738
1739     ddsd.dwSize = sizeof(ddsd);
1740     dxresult = IDirectDrawSurface2_Lock( p_vout->p_sys->p_display, NULL,
1741                                          &ddsd, DDLOCK_WAIT, NULL );
1742     if( dxresult != DD_OK ) return i_rgb;
1743
1744     *(uint32_t *)ddsd.lpSurface = i_pixel_backup;
1745
1746     IDirectDrawSurface2_Unlock( p_vout->p_sys->p_display, NULL );
1747
1748     return i_rgb;
1749 }
1750
1751 /*****************************************************************************
1752  * object variables callbacks: a bunch of object variables are used by the
1753  * interfaces to interact with the vout.
1754  *****************************************************************************/
1755 static int OnTopCallback( vlc_object_t *p_this, char const *psz_cmd,
1756                         vlc_value_t oldval, vlc_value_t newval, void *p_data )
1757 {
1758     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1759     p_vout->p_sys->b_on_top_change = VLC_TRUE;
1760     return VLC_SUCCESS;
1761 }
1762
1763 /*****************************************************************************
1764  * config variable callback
1765  *****************************************************************************/
1766 BOOL WINAPI DirectXEnumCallback2( GUID* p_guid, LPTSTR psz_desc,
1767                                   LPTSTR psz_drivername, VOID* p_context,
1768                                   HMONITOR hmon )
1769 {
1770     module_config_t *p_item = (module_config_t *)p_context;
1771
1772     p_item->ppsz_list =
1773         (char **)realloc( p_item->ppsz_list,
1774                           (p_item->i_list+2) * sizeof(char *) );
1775     p_item->ppsz_list_text =
1776         (char **)realloc( p_item->ppsz_list_text,
1777                           (p_item->i_list+2) * sizeof(char *) );
1778
1779     p_item->ppsz_list[p_item->i_list] = strdup( psz_drivername );
1780     p_item->ppsz_list_text[p_item->i_list] = NULL;
1781     p_item->i_list++;
1782     p_item->ppsz_list[p_item->i_list] = NULL;
1783     p_item->ppsz_list_text[p_item->i_list] = NULL;
1784
1785     return TRUE; /* Keep enumerating */
1786 }
1787
1788 static int FindDevicesCallback( vlc_object_t *p_this, char const *psz_name,
1789                                vlc_value_t newval, vlc_value_t oldval, void *d)
1790 {
1791     HRESULT (WINAPI *OurDirectDrawEnumerateEx)( LPDDENUMCALLBACKEXA, LPVOID,
1792                                                 DWORD );
1793     HINSTANCE hddraw_dll;
1794
1795     module_config_t *p_item;
1796     int i;
1797
1798     p_item = config_FindConfig( p_this, psz_name );
1799     if( !p_item ) return VLC_SUCCESS;
1800
1801     /* Clear-up the current list */
1802     if( p_item->i_list )
1803     {
1804         /* Keep the first entry */
1805         for( i = 1; i < p_item->i_list; i++ )
1806         {
1807             free( p_item->ppsz_list[i] );
1808             free( p_item->ppsz_list_text[i] );
1809         }
1810         /* TODO: Remove when no more needed */
1811         p_item->ppsz_list[i] = NULL;
1812         p_item->ppsz_list_text[i] = NULL;
1813     }
1814     p_item->i_list = 1;
1815
1816     /* Load direct draw DLL */
1817     hddraw_dll = LoadLibrary("DDRAW.DLL");
1818     if( hddraw_dll == NULL ) return VLC_SUCCESS;
1819
1820     OurDirectDrawEnumerateEx =
1821       (void *)GetProcAddress( hddraw_dll, "DirectDrawEnumerateExA" );
1822
1823     if( OurDirectDrawEnumerateEx )
1824     {
1825         /* Enumerate displays */
1826         OurDirectDrawEnumerateEx( DirectXEnumCallback2, p_item,
1827                                   DDENUM_ATTACHEDSECONDARYDEVICES );
1828     }
1829
1830     FreeLibrary( hddraw_dll );
1831
1832     return VLC_SUCCESS;
1833 }