1 /*****************************************************************************
2 * directx.c: Windows DirectDraw video output
3 *****************************************************************************
4 * Copyright (C) 2001-2009 the VideoLAN team
7 * Authors: Gildas Bazin <gbazin@videolan.org>
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.
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.
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 *****************************************************************************/
24 /*****************************************************************************
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.
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.
36 *****************************************************************************/
42 #include <vlc_common.h>
43 #include <vlc_plugin.h>
44 #include <vlc_vout_display.h>
45 #include <vlc_playlist.h> /* needed for wallpaper */
48 #include <commctrl.h> /* ListView_(Get|Set)* */
51 # include <multimon.h>
53 #undef GetSystemMetrics
55 #ifndef MONITOR_DEFAULTTONEAREST
56 # define MONITOR_DEFAULTTONEAREST 2
62 # error "Unicode mode not supported"
65 /*****************************************************************************
67 *****************************************************************************/
68 #define HW_YUV_TEXT N_("Use hardware YUV->RGB conversions")
69 #define HW_YUV_LONGTEXT N_(\
70 "Try to use hardware acceleration for YUV->RGB conversions. " \
71 "This option doesn't have any effect when using overlays.")
73 #define SYSMEM_TEXT N_("Use video buffers in system memory")
74 #define SYSMEM_LONGTEXT N_(\
75 "Create video buffers in system memory instead of video memory. This " \
76 "isn't recommended as usually using video memory allows to benefit from " \
77 "more hardware acceleration (like rescaling or YUV->RGB conversions). " \
78 "This option doesn't have any effect when using overlays.")
80 #define TRIPLEBUF_TEXT N_("Use triple buffering for overlays")
81 #define TRIPLEBUF_LONGTEXT N_(\
82 "Try to use triple buffering when using YUV overlays. That results in " \
83 "much better video quality (no flickering).")
85 #define DEVICE_TEXT N_("Name of desired display device")
86 #define DEVICE_LONGTEXT N_("In a multiple monitor configuration, you can " \
87 "specify the Windows device name of the display that you want the video " \
88 "window to open on. For example, \"\\\\.\\DISPLAY1\" or " \
89 "\"\\\\.\\DISPLAY2\".")
91 #define DX_HELP N_("Recommended video output for Windows XP. " \
92 "Incompatible with Vista's Aero interface" )
94 static const char * const device[] = { "" };
95 static const char * const device_text[] = { N_("Default") };
97 static int Open (vlc_object_t *);
98 static void Close(vlc_object_t *);
100 static int FindDevicesCallback(vlc_object_t *, char const *,
101 vlc_value_t, vlc_value_t, void *);
103 set_shortname("DirectX")
104 set_description(N_("DirectX (DirectDraw) video output"))
106 set_category(CAT_VIDEO)
107 set_subcategory(SUBCAT_VIDEO_VOUT)
108 add_bool("directx-hw-yuv", true, NULL, HW_YUV_TEXT, HW_YUV_LONGTEXT,
110 add_bool("directx-use-sysmem", false, NULL, SYSMEM_TEXT, SYSMEM_LONGTEXT,
112 add_bool("directx-3buffering", true, NULL, TRIPLEBUF_TEXT,
113 TRIPLEBUF_LONGTEXT, true)
114 add_string("directx-device", "", NULL, DEVICE_TEXT, DEVICE_LONGTEXT, true)
115 change_string_list(device, device_text, FindDevicesCallback)
116 change_action_add(FindDevicesCallback, N_("Refresh list"))
118 set_capability("vout display", 100)
119 add_shortcut("directx")
120 set_callbacks(Open, Close)
123 /*****************************************************************************
125 *****************************************************************************/
127 struct picture_sys_t {
128 LPDIRECTDRAWSURFACE2 surface;
129 LPDIRECTDRAWSURFACE2 front_surface;
132 /*****************************************************************************
134 * Defining them here allows us to get rid of the dxguid library during
136 *****************************************************************************/
137 #include <initguid.h>
140 DEFINE_GUID(IID_IDirectDraw2, 0xB3A6F3E0,0x2B43,0x11CF,0xA2,0xDE,0x00,0xAA,0x00,0xB9,0x33,0x56);
141 DEFINE_GUID(IID_IDirectDrawSurface2, 0x57805885,0x6eec,0x11cf,0x94,0x41,0xa8,0x23,0x03,0xc1,0x0e,0x27);
143 static picture_pool_t *Pool (vout_display_t *, unsigned);
144 static void Display(vout_display_t *, picture_t *);
145 static int Control(vout_display_t *, int, va_list);
146 static void Manage (vout_display_t *);
149 static int WallpaperCallback(vlc_object_t *, char const *,
150 vlc_value_t, vlc_value_t, void *);
152 static int DirectXOpen(vout_display_t *, video_format_t *fmt);
153 static void DirectXClose(vout_display_t *);
155 static int DirectXLock(picture_t *);
156 static void DirectXUnlock(picture_t *);
158 static int DirectXUpdateOverlay(vout_display_t *, LPDIRECTDRAWSURFACE2 surface);
160 static void WallpaperChange(vout_display_t *vd, bool use_wallpaper);
162 /** This function allocates and initialize the DirectX vout display.
164 static int Open(vlc_object_t *object)
166 vout_display_t *vd = (vout_display_t *)object;
167 vout_display_sys_t *sys;
169 /* Allocate structure */
170 vd->sys = sys = calloc(1, sizeof(*sys));
174 /* Load direct draw DLL */
175 sys->hddraw_dll = LoadLibrary(_T("DDRAW.DLL"));
176 if (!sys->hddraw_dll) {
177 msg_Warn(vd, "DirectXInitDDraw failed loading ddraw.dll");
183 HMODULE huser32 = GetModuleHandle(_T("USER32"));
185 sys->MonitorFromWindow = (void*)GetProcAddress(huser32, _T("MonitorFromWindow"));
186 sys->GetMonitorInfo = (void*)GetProcAddress(huser32, _T("GetMonitorInfoA"));
188 sys->MonitorFromWindow = NULL;
189 sys->GetMonitorInfo = NULL;
193 sys->use_wallpaper = var_CreateGetBool(vd, "video-wallpaper");
195 sys->use_overlay = false;//var_CreateGetBool(vd, "overlay"); /* FIXME */
196 var_Create(vd, "directx-device", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
203 video_format_t fmt = vd->fmt;
205 if (DirectXOpen(vd, &fmt))
209 vout_display_info_t info = vd->info;
211 info.has_double_click = true;
212 info.has_hide_mouse = false;
213 info.has_pictures_invalid = true;
214 info.has_event_thread = true;
216 /* Interaction TODO support starting with wallpaper mode */
217 vlc_mutex_init(&sys->lock);
218 sys->ch_wallpaper = sys->use_wallpaper;
219 sys->wallpaper_requested = sys->use_wallpaper;
220 sys->use_wallpaper = false;
223 val.psz_string = _("Wallpaper");
224 var_Change(vd, "video-wallpaper", VLC_VAR_SETTEXT, &val, NULL);
225 var_AddCallback(vd, "video-wallpaper", WallpaperCallback, NULL);
227 /* Setup vout_display now that everything is fine */
233 vd->display = Display;
234 vd->control = Control;
242 FreeLibrary(sys->hddraw_dll);
247 /** Terminate a vout display created by Open.
249 static void Close(vlc_object_t *object)
251 vout_display_t *vd = (vout_display_t *)object;
252 vout_display_sys_t *sys = vd->sys;
254 var_DelCallback(vd, "video-wallpaper", WallpaperCallback, NULL);
255 vlc_mutex_destroy(&sys->lock);
257 /* Make sure the wallpaper is restored */
258 WallpaperChange(vd, false);
265 FreeLibrary(sys->hddraw_dll);
269 static picture_pool_t *Pool(vout_display_t *vd, unsigned count)
272 return vd->sys->pool;
274 static void Display(vout_display_t *vd, picture_t *picture)
276 vout_display_sys_t *sys = vd->sys;
278 assert(sys->display);
280 /* Our surface can be lost so be sure to check this
281 * and restore it if need be */
282 if (IDirectDrawSurface2_IsLost(sys->display) == DDERR_SURFACELOST) {
283 if (IDirectDrawSurface2_Restore(sys->display) == DD_OK) {
284 if (sys->use_overlay)
285 DirectXUpdateOverlay(vd, NULL);
290 DirectXUnlock(picture);
292 if (sys->use_overlay) {
293 /* Flip the overlay buffers if we are using back buffers */
294 if (picture->p_sys->surface != picture->p_sys->front_surface) {
295 HRESULT hr = IDirectDrawSurface2_Flip(picture->p_sys->front_surface,
298 msg_Warn(vd, "could not flip overlay (error %li)", hr);
301 /* Blit video surface to display with the NOTEARING option */
303 ZeroMemory(&ddbltfx, sizeof(ddbltfx));
304 ddbltfx.dwSize = sizeof(ddbltfx);
305 ddbltfx.dwDDFX = DDBLTFX_NOTEARING;
307 HRESULT hr = IDirectDrawSurface2_Blt(sys->display,
308 &sys->rect_dest_clipped,
309 picture->p_sys->surface,
310 &sys->rect_src_clipped,
311 DDBLT_ASYNC, &ddbltfx);
313 msg_Warn(vd, "could not blit surface (error %li)", hr);
315 DirectXLock(picture);
317 if (sys->is_first_display) {
318 IDirectDraw_WaitForVerticalBlank(sys->ddobject,
319 DDWAITVB_BLOCKBEGIN, NULL);
320 if (sys->use_overlay) {
321 HBRUSH brush = CreateSolidBrush(sys->i_rgb_colorkey);
322 /* set the colorkey as the backgound brush for the video window */
323 SetClassLongPtr(sys->hvideownd, GCLP_HBRBACKGROUND, (LONG_PTR)brush);
328 picture_Release(picture);
330 static int Control(vout_display_t *vd, int query, va_list args)
332 vout_display_sys_t *sys = vd->sys;
335 case VOUT_DISPLAY_RESET_PICTURES:
337 /* Make sure the wallpaper is restored */
338 if (sys->use_wallpaper) {
339 vlc_mutex_lock(&sys->lock);
340 if (!sys->ch_wallpaper) {
341 sys->ch_wallpaper = true;
342 sys->wallpaper_requested = true;
344 vlc_mutex_unlock(&sys->lock);
346 WallpaperChange(vd, false);
348 return DirectXOpen(vd, &vd->fmt);
350 return CommonControl(vd, query, args);
353 static void Manage(vout_display_t *vd)
355 vout_display_sys_t *sys = vd->sys;
359 if (sys->changes & DX_POSITION_CHANGE) {
361 if (sys->use_overlay)
362 DirectXUpdateOverlay(vd, NULL);
364 /* Check if we are still on the same monitor */
365 if (sys->MonitorFromWindow &&
366 sys->hmonitor != sys->MonitorFromWindow(sys->hwnd, MONITOR_DEFAULTTONEAREST)) {
367 vout_display_SendEventPicturesInvalid(vd);
370 sys->changes &= ~DX_POSITION_CHANGE;
373 /* Wallpaper mode change */
374 vlc_mutex_lock(&sys->lock);
375 const bool ch_wallpaper = sys->ch_wallpaper;
376 const bool wallpaper_requested = sys->wallpaper_requested;
377 sys->ch_wallpaper = false;
378 vlc_mutex_unlock(&sys->lock);
381 WallpaperChange(vd, wallpaper_requested);
385 static int DirectXOpenDDraw(vout_display_t *);
386 static void DirectXCloseDDraw(vout_display_t *);
388 static int DirectXOpenDisplay(vout_display_t *vd);
389 static void DirectXCloseDisplay(vout_display_t *vd);
391 static int DirectXCreatePool(vout_display_t *, bool *, video_format_t *);
392 static void DirectXDestroyPool(vout_display_t *);
394 static int DirectXOpen(vout_display_t *vd, video_format_t *fmt)
396 vout_display_sys_t *sys = vd->sys;
398 assert(!sys->ddobject);
399 assert(!sys->display);
400 assert(!sys->clipper);
402 /* Initialise DirectDraw */
403 if (DirectXOpenDDraw(vd)) {
404 msg_Err(vd, "cannot initialize DirectX DirectDraw");
408 /* Create the directx display */
409 if (DirectXOpenDisplay(vd)) {
410 msg_Err(vd, "cannot initialize DirectX DirectDraw");
413 UpdateRects(vd, NULL, NULL, true);
415 /* Create the picture pool */
416 if (DirectXCreatePool(vd, &sys->use_overlay, fmt)) {
417 msg_Err(vd, "cannot create any DirectX surface");
422 if (sys->use_overlay)
423 DirectXUpdateOverlay(vd, NULL);
424 EventThreadUseOverlay(sys->event, sys->use_overlay);
426 /* Change the window title bar text */
427 const char *fallback;
428 if (sys->use_overlay)
429 fallback = VOUT_TITLE " (hardware YUV overlay DirectX output)";
430 else if (vlc_fourcc_IsYUV(fmt->i_chroma))
431 fallback = VOUT_TITLE " (hardware YUV DirectX output)";
433 fallback = VOUT_TITLE " (software RGB DirectX output)";
434 EventThreadUpdateTitle(sys->event, fallback);
438 static void DirectXClose(vout_display_t *vd)
440 DirectXDestroyPool(vd);
441 DirectXCloseDisplay(vd);
442 DirectXCloseDDraw(vd);
446 static BOOL WINAPI DirectXOpenDDrawCallback(GUID *guid, LPTSTR desc,
447 LPTSTR drivername, VOID *context,
450 vout_display_t *vd = context;
451 vout_display_sys_t *sys = vd->sys;
453 /* This callback function is called by DirectDraw once for each
454 * available DirectDraw device.
456 * Returning TRUE keeps enumerating.
461 msg_Dbg(vd, "DirectXEnumCallback: %s, %s", desc, drivername);
463 char *device = var_GetString(vd, "directx-device");
465 /* Check for forced device */
466 if (device && *device && !strcmp(drivername, device)) {
467 MONITORINFO monitor_info;
468 monitor_info.cbSize = sizeof(MONITORINFO);
470 if (sys->GetMonitorInfo(hmon, &monitor_info)) {
473 /* Move window to the right screen */
474 GetWindowRect(sys->hwnd, &rect);
475 if (!IntersectRect(&rect, &rect, &monitor_info.rcWork)) {
476 rect.left = monitor_info.rcWork.left;
477 rect.top = monitor_info.rcWork.top;
478 msg_Dbg(vd, "DirectXEnumCallback: setting window "
479 "position to %ld,%ld", rect.left, rect.top);
480 SetWindowPos(sys->hwnd, NULL,
481 rect.left, rect.top, 0, 0,
482 SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE);
485 sys->hmonitor = hmon;
489 if (hmon == sys->hmonitor) {
490 msg_Dbg(vd, "selecting %s, %s", desc, drivername);
492 free(sys->display_driver);
493 sys->display_driver = malloc(sizeof(*guid));
494 if (sys->display_driver)
495 *sys->display_driver = *guid;
501 * Probe the capabilities of the hardware
503 * It is nice to know which features are supported by the hardware so we can
504 * find ways to optimize our rendering.
506 static void DirectXGetDDrawCaps(vout_display_t *vd)
508 vout_display_sys_t *sys = vd->sys;
510 /* This is just an indication of whether or not we'll support overlay,
511 * but with this test we don't know if we support YUV overlay */
513 ZeroMemory(&ddcaps, sizeof(ddcaps));
514 ddcaps.dwSize = sizeof(ddcaps);
515 HRESULT hr = IDirectDraw2_GetCaps(sys->ddobject, &ddcaps, NULL);
517 msg_Warn(vd, "cannot get caps");
521 /* Determine if the hardware supports overlay surfaces */
522 const bool has_overlay = ddcaps.dwCaps & DDCAPS_OVERLAY;
523 /* Determine if the hardware supports overlay surfaces */
524 const bool has_overlay_fourcc = ddcaps.dwCaps & DDCAPS_OVERLAYFOURCC;
525 /* Determine if the hardware supports overlay deinterlacing */
526 const bool can_deinterlace = ddcaps.dwCaps & DDCAPS2_CANFLIPODDEVEN;
527 /* Determine if the hardware supports colorkeying */
528 const bool has_color_key = ddcaps.dwCaps & DDCAPS_COLORKEY;
529 /* Determine if the hardware supports scaling of the overlay surface */
530 const bool can_stretch = ddcaps.dwCaps & DDCAPS_OVERLAYSTRETCH;
531 /* Determine if the hardware supports color conversion during a blit */
532 sys->can_blit_fourcc = ddcaps.dwCaps & DDCAPS_BLTFOURCC;
533 /* Determine overlay source boundary alignment */
534 const bool align_boundary_src = ddcaps.dwCaps & DDCAPS_ALIGNBOUNDARYSRC;
535 /* Determine overlay destination boundary alignment */
536 const bool align_boundary_dest = ddcaps.dwCaps & DDCAPS_ALIGNBOUNDARYDEST;
537 /* Determine overlay destination size alignment */
538 const bool align_size_src = ddcaps.dwCaps & DDCAPS_ALIGNSIZESRC;
539 /* Determine overlay destination size alignment */
540 const bool align_size_dest = ddcaps.dwCaps & DDCAPS_ALIGNSIZEDEST;
542 msg_Dbg(vd, "DirectDraw Capabilities: overlay=%i yuvoverlay=%i "
543 "can_deinterlace_overlay=%i colorkey=%i stretch=%i "
545 has_overlay, has_overlay_fourcc, can_deinterlace,
546 has_color_key, can_stretch, sys->can_blit_fourcc);
548 if (align_boundary_src || align_boundary_dest || align_size_src || align_size_dest) {
549 if (align_boundary_src)
550 vd->sys->i_align_src_boundary = ddcaps.dwAlignBoundarySrc;
551 if (align_boundary_dest)
552 vd->sys->i_align_dest_boundary = ddcaps.dwAlignBoundaryDest;
554 vd->sys->i_align_src_size = ddcaps.dwAlignSizeSrc;
556 vd->sys->i_align_dest_size = ddcaps.dwAlignSizeDest;
559 "align_boundary_src=%i,%i align_boundary_dest=%i,%i "
560 "align_size_src=%i,%i align_size_dest=%i,%i",
561 align_boundary_src, vd->sys->i_align_src_boundary,
562 align_boundary_dest, vd->sys->i_align_dest_boundary,
563 align_size_src, vd->sys->i_align_src_size,
564 align_size_dest, vd->sys->i_align_dest_size);
571 static int DirectXOpenDDraw(vout_display_t *vd)
573 vout_display_sys_t *sys = vd->sys;
577 HRESULT (WINAPI *OurDirectDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *);
578 OurDirectDrawCreate =
579 (void *)GetProcAddress(sys->hddraw_dll, _T("DirectDrawCreate"));
580 if (!OurDirectDrawCreate) {
581 msg_Err(vd, "DirectXInitDDraw failed GetProcAddress");
586 if (sys->MonitorFromWindow) {
587 HRESULT (WINAPI *OurDirectDrawEnumerateEx)(LPDDENUMCALLBACKEXA, LPVOID, DWORD);
588 OurDirectDrawEnumerateEx =
589 (void *)GetProcAddress(sys->hddraw_dll, _T("DirectDrawEnumerateExA"));
591 if (OurDirectDrawEnumerateEx) {
592 char *device = var_GetString(vd, "directx-device");
594 msg_Dbg(vd, "directx-device: %s", device);
598 sys->hmonitor = sys->MonitorFromWindow(sys->hwnd, MONITOR_DEFAULTTONEAREST);
600 /* Enumerate displays */
601 OurDirectDrawEnumerateEx(DirectXOpenDDrawCallback,
602 vd, DDENUM_ATTACHEDSECONDARYDEVICES);
606 /* Initialize DirectDraw now */
607 LPDIRECTDRAW ddobject;
608 hr = OurDirectDrawCreate(sys->display_driver, &ddobject, NULL);
610 msg_Err(vd, "DirectXInitDDraw cannot initialize DDraw");
614 /* Get the IDirectDraw2 interface */
615 hr = IDirectDraw_QueryInterface(ddobject, &IID_IDirectDraw2,
617 /* Release the unused interface */
618 IDirectDraw_Release(ddobject);
621 msg_Err(vd, "cannot get IDirectDraw2 interface");
622 sys->ddobject = NULL;
626 /* Set DirectDraw Cooperative level, ie what control we want over Windows
628 hr = IDirectDraw2_SetCooperativeLevel(sys->ddobject, NULL, DDSCL_NORMAL);
630 msg_Err(vd, "cannot set direct draw cooperative level");
634 /* Get the size of the current display device */
635 if (sys->hmonitor && sys->GetMonitorInfo) {
636 MONITORINFO monitor_info;
637 monitor_info.cbSize = sizeof(MONITORINFO);
638 sys->GetMonitorInfo(vd->sys->hmonitor, &monitor_info);
639 sys->rect_display = monitor_info.rcMonitor;
641 sys->rect_display.left = 0;
642 sys->rect_display.top = 0;
643 sys->rect_display.right = GetSystemMetrics(SM_CXSCREEN);
644 sys->rect_display.bottom = GetSystemMetrics(SM_CYSCREEN);
647 msg_Dbg(vd, "screen dimensions (%lix%li,%lix%li)",
648 sys->rect_display.left,
649 sys->rect_display.top,
650 sys->rect_display.right,
651 sys->rect_display.bottom);
653 /* Probe the capabilities of the hardware */
654 DirectXGetDDrawCaps(vd);
659 static void DirectXCloseDDraw(vout_display_t *vd)
661 vout_display_sys_t *sys = vd->sys;
663 IDirectDraw2_Release(sys->ddobject);
665 sys->ddobject = NULL;
667 free(sys->display_driver);
668 sys->display_driver = NULL;
670 sys->hmonitor = NULL;
674 * Create a clipper that will be used when blitting the RGB surface to the main display.
676 * This clipper prevents us to modify by mistake anything on the screen
677 * which doesn't belong to our window. For example when a part of our video
678 * window is hidden by another window.
680 static void DirectXCreateClipper(vout_display_t *vd)
682 vout_display_sys_t *sys = vd->sys;
685 /* Create the clipper */
686 hr = IDirectDraw2_CreateClipper(sys->ddobject, 0, &sys->clipper, NULL);
688 msg_Warn(vd, "cannot create clipper (error %li)", hr);
692 /* Associate the clipper to the window */
693 hr = IDirectDrawClipper_SetHWnd(sys->clipper, 0, sys->hvideownd);
695 msg_Warn(vd, "cannot attach clipper to window (error %li)", hr);
699 /* associate the clipper with the surface */
700 hr = IDirectDrawSurface_SetClipper(sys->display, sys->clipper);
703 msg_Warn(vd, "cannot attach clipper to surface (error %li)", hr);
711 IDirectDrawClipper_Release(sys->clipper);
716 * It finds out the 32bits RGB pixel value of the colorkey.
718 static uint32_t DirectXFindColorkey(vout_display_t *vd, uint32_t *color)
720 vout_display_sys_t *sys = vd->sys;
725 ddsd.dwSize = sizeof(ddsd);
726 hr = IDirectDrawSurface2_Lock(sys->display, NULL, &ddsd, DDLOCK_WAIT, NULL);
730 uint32_t backup = *(uint32_t *)ddsd.lpSurface;
732 switch (ddsd.ddpfPixelFormat.dwRGBBitCount) {
734 *(uint8_t *)ddsd.lpSurface = *color | (*color << 4);
737 *(uint8_t *)ddsd.lpSurface = *color;
741 *(uint16_t *)ddsd.lpSurface = *color;
744 /* Seems to be problematic so we'll just put black as the colorkey */
747 *(uint32_t *)ddsd.lpSurface = *color;
750 IDirectDrawSurface2_Unlock(sys->display, NULL);
755 if (IDirectDrawSurface2_GetDC(sys->display, &hdc) == DD_OK) {
756 rgb = GetPixel(hdc, 0, 0);
757 IDirectDrawSurface2_ReleaseDC(sys->display, hdc);
762 /* Restore the pixel value */
763 ddsd.dwSize = sizeof(ddsd);
764 if (IDirectDrawSurface2_Lock(sys->display, NULL, &ddsd, DDLOCK_WAIT, NULL) == DD_OK) {
765 *(uint32_t *)ddsd.lpSurface = backup;
766 IDirectDrawSurface2_Unlock(sys->display, NULL);
773 * Create and initialize display according to preferences specified in the vout
776 static int DirectXOpenDisplay(vout_display_t *vd)
778 vout_display_sys_t *sys = vd->sys;
781 /* Now get the primary surface. This surface is what you actually see
784 ZeroMemory(&ddsd, sizeof(ddsd));
785 ddsd.dwSize = sizeof(ddsd);
786 ddsd.dwFlags = DDSD_CAPS;
787 ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
789 LPDIRECTDRAWSURFACE display;
790 hr = IDirectDraw2_CreateSurface(sys->ddobject, &ddsd, &display, NULL);
792 msg_Err(vd, "cannot get primary surface (error %li)", hr);
796 hr = IDirectDrawSurface_QueryInterface(display, &IID_IDirectDrawSurface2,
798 /* Release the old interface */
799 IDirectDrawSurface_Release(display);
802 msg_Err(vd, "cannot query IDirectDrawSurface2 interface (error %li)", hr);
807 /* The clipper will be used only in non-overlay mode */
808 DirectXCreateClipper(vd);
810 /* Make sure the colorkey will be painted */
812 sys->i_rgb_colorkey = DirectXFindColorkey(vd, &sys->i_colorkey);
816 static void DirectXCloseDisplay(vout_display_t *vd)
818 vout_display_sys_t *sys = vd->sys;
820 if (sys->clipper != NULL)
821 IDirectDrawClipper_Release(sys->clipper);
823 if (sys->display != NULL)
824 IDirectDrawSurface2_Release(sys->display);
831 * Create an YUV overlay or RGB surface for the video.
833 * The best method of display is with an YUV overlay because the YUV->RGB
834 * conversion is done in hardware.
835 * You can also create a plain RGB surface.
836 * (Maybe we could also try an RGB overlay surface, which could have hardware
837 * scaling and which would also be faster in window mode because you don't
838 * need to do any blitting to the main display...)
840 static int DirectXCreateSurface(vout_display_t *vd,
841 LPDIRECTDRAWSURFACE2 *surface,
842 const video_format_t *fmt,
846 int backbuffer_count)
848 vout_display_sys_t *sys = vd->sys;
852 ZeroMemory(&ddsd, sizeof(ddsd));
853 ddsd.dwSize = sizeof(ddsd);
854 ddsd.ddpfPixelFormat.dwSize = sizeof(ddsd.ddpfPixelFormat);
855 ddsd.dwFlags = DDSD_HEIGHT | DDSD_WIDTH;
856 ddsd.dwWidth = fmt->i_width;
857 ddsd.dwHeight = fmt->i_height;
859 ddsd.dwFlags |= DDSD_PIXELFORMAT;
860 ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
861 ddsd.ddpfPixelFormat.dwFourCC = fourcc;
864 ddsd.dwFlags |= DDSD_CAPS;
865 ddsd.ddsCaps.dwCaps = DDSCAPS_OVERLAY | DDSCAPS_VIDEOMEMORY;
866 if (backbuffer_count > 0)
867 ddsd.ddsCaps.dwCaps |= DDSCAPS_COMPLEX | DDSCAPS_FLIP;
869 if (backbuffer_count > 0) {
870 ddsd.dwFlags |= DDSD_BACKBUFFERCOUNT;
871 ddsd.dwBackBufferCount = backbuffer_count;
874 ddsd.dwFlags |= DDSD_CAPS;
875 ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
877 ddsd.ddsCaps.dwCaps |= DDSCAPS_SYSTEMMEMORY;
879 ddsd.ddsCaps.dwCaps |= DDSCAPS_VIDEOMEMORY;
882 /* Create the video surface */
883 LPDIRECTDRAWSURFACE surface_v1;
884 if (IDirectDraw2_CreateSurface(sys->ddobject, &ddsd, &surface_v1, NULL) != DD_OK)
887 /* Now that the surface is created, try to get a newer DirectX interface */
888 HRESULT hr = IDirectDrawSurface_QueryInterface(surface_v1,
889 &IID_IDirectDrawSurface2,
891 IDirectDrawSurface_Release(surface_v1);
893 msg_Err(vd, "cannot query IDirectDrawSurface2 interface (error %li)", hr);
898 /* Check the overlay is useable as some graphics cards allow creating
899 * several overlays but only one can be used at one time. */
900 if (DirectXUpdateOverlay(vd, *surface)) {
901 IDirectDrawSurface2_Release(*surface);
902 msg_Err(vd, "overlay unuseable (might already be in use)");
910 static void DirectXDestroySurface(LPDIRECTDRAWSURFACE2 surface)
912 IDirectDrawSurface2_Release(surface);
915 * This function locks a surface and get the surface descriptor.
917 static int DirectXLockSurface(LPDIRECTDRAWSURFACE2 front_surface,
918 LPDIRECTDRAWSURFACE2 surface,
923 DDSURFACEDESC ddsd_dummy;
927 ZeroMemory(ddsd, sizeof(*ddsd));
928 ddsd->dwSize = sizeof(*ddsd);
929 hr = IDirectDrawSurface2_Lock(surface, NULL, ddsd, DDLOCK_NOSYSLOCK | DDLOCK_WAIT, NULL);
931 if (hr == DDERR_INVALIDPARAMS) {
932 /* DirectX 3 doesn't support the DDLOCK_NOSYSLOCK flag, resulting
933 * in an invalid params error */
934 hr = IDirectDrawSurface2_Lock(surface, NULL, ddsd, DDLOCK_WAIT, NULL);
936 if (hr == DDERR_SURFACELOST) {
937 /* Your surface can be lost so be sure
938 * to check this and restore it if needed */
940 /* When using overlays with back-buffers, we need to restore
941 * the front buffer so the back-buffers get restored as well. */
942 if (front_surface != surface)
943 IDirectDrawSurface2_Restore(front_surface);
945 IDirectDrawSurface2_Restore(surface);
947 hr = IDirectDrawSurface2_Lock(surface, NULL, ddsd, DDLOCK_WAIT, NULL);
954 static void DirectXUnlockSurface(LPDIRECTDRAWSURFACE2 front_surface,
955 LPDIRECTDRAWSURFACE2 surface)
957 IDirectDrawSurface2_Unlock(surface, NULL);
959 static int DirectXCheckLockingSurface(LPDIRECTDRAWSURFACE2 front_surface,
960 LPDIRECTDRAWSURFACE2 surface)
962 if (DirectXLockSurface(front_surface, surface, NULL))
965 DirectXUnlockSurface(front_surface, surface);
976 static DWORD DirectXGetFourcc(vlc_fourcc_t codec)
978 static const dx_format_t dx_formats[] = {
979 { VLC_CODEC_YUYV, MAKEFOURCC('Y','U','Y','2') },
980 { VLC_CODEC_UYVY, MAKEFOURCC('U','Y','V','Y') },
981 { VLC_CODEC_YVYU, MAKEFOURCC('Y','V','Y','U') },
982 { VLC_CODEC_YV12, MAKEFOURCC('Y','V','1','2') },
983 { VLC_CODEC_I420, MAKEFOURCC('Y','V','1','2') },
984 { VLC_CODEC_J420, MAKEFOURCC('Y','V','1','2') },
988 for (unsigned i = 0; dx_formats[i].codec != 0; i++) {
989 if (dx_formats[i].codec == codec)
990 return dx_formats[i].fourcc;
995 static int DirectXCreatePictureResourceYuvOverlay(vout_display_t *vd,
996 const video_format_t *fmt,
999 vout_display_sys_t *sys = vd->sys;
1001 bool allow_3buf = var_InheritBool(vd, "directx-3buffering");
1003 /* The overlay surface that we create won't be used to decode directly
1004 * into it because accessing video memory directly is way to slow (remember
1005 * that pictures are decoded macroblock per macroblock). Instead the video
1006 * will be decoded in picture buffers in system memory which will then be
1007 * memcpy() to the overlay surface. */
1008 LPDIRECTDRAWSURFACE2 front_surface;
1009 int ret = VLC_EGENERIC;
1011 /* Triple buffering rocks! it doesn't have any processing overhead
1012 * (you don't have to wait for the vsync) and provides for a very nice
1013 * video quality (no tearing). */
1014 ret = DirectXCreateSurface(vd, &front_surface, fmt, fourcc, true, false, 2);
1017 ret = DirectXCreateSurface(vd, &front_surface, fmt, fourcc, true, false, 0);
1019 return VLC_EGENERIC;
1020 msg_Dbg(vd, "YUV overlay surface created successfully");
1022 /* Get the back buffer */
1023 LPDIRECTDRAWSURFACE2 surface;
1025 ZeroMemory(&dds_caps, sizeof(dds_caps));
1026 dds_caps.dwCaps = DDSCAPS_BACKBUFFER;
1027 if (IDirectDrawSurface2_GetAttachedSurface(front_surface, &dds_caps, &surface) != DD_OK) {
1028 msg_Warn(vd, "Failed to get surface back buffer");
1029 /* front buffer is the same as back buffer */
1030 surface = front_surface;
1033 if (DirectXCheckLockingSurface(front_surface, surface)) {
1034 DirectXDestroySurface(front_surface);
1035 return VLC_EGENERIC;
1039 picture_resource_t *rsc = &sys->resource;
1040 rsc->p_sys->front_surface = front_surface;
1041 rsc->p_sys->surface = surface;
1044 static int DirectXCreatePictureResourceYuv(vout_display_t *vd,
1045 const video_format_t *fmt,
1048 vout_display_sys_t *sys = vd->sys;
1050 bool allow_sysmem = var_InheritBool(vd, "directx-use-sysmem");
1052 /* As we can't have an overlay, we'll try to create a plain offscreen
1053 * surface. This surface will reside in video memory because there's a
1054 * better chance then that we'll be able to use some kind of hardware
1055 * acceleration like rescaling, blitting or YUV->RGB conversions.
1056 * We then only need to blit this surface onto the main display when we
1057 * want to display it */
1059 /* Check if the chroma is supported first. This is required
1060 * because a few buggy drivers don't mind creating the surface
1061 * even if they don't know about the chroma. */
1063 if (IDirectDraw2_GetFourCCCodes(sys->ddobject, &count, NULL) != DD_OK)
1064 return VLC_EGENERIC;
1066 DWORD *list = calloc(count, sizeof(*list));
1069 if (IDirectDraw2_GetFourCCCodes(sys->ddobject, &count, list) != DD_OK) {
1071 return VLC_EGENERIC;
1074 for (index = 0; index < count; index++) {
1075 if (list[index] == fourcc)
1080 return VLC_EGENERIC;
1083 LPDIRECTDRAWSURFACE2 surface;
1084 if (DirectXCreateSurface(vd, &surface, fmt, fourcc, false, allow_sysmem, 0))
1085 return VLC_EGENERIC;
1086 msg_Dbg(vd, "YUV plain surface created successfully");
1088 if (DirectXCheckLockingSurface(surface, surface)) {
1089 DirectXDestroySurface(surface);
1090 return VLC_EGENERIC;
1094 picture_resource_t *rsc = &sys->resource;
1095 rsc->p_sys->front_surface = surface;
1096 rsc->p_sys->surface = surface;
1099 static int DirectXCreatePictureResourceRgb(vout_display_t *vd,
1100 video_format_t *fmt)
1102 vout_display_sys_t *sys = vd->sys;
1103 bool allow_sysmem = var_InheritBool(vd, "directx-use-sysmem");
1105 /* Our last choice is to use a plain RGB surface */
1106 DDPIXELFORMAT ddpfPixelFormat;
1107 ZeroMemory(&ddpfPixelFormat, sizeof(ddpfPixelFormat));
1108 ddpfPixelFormat.dwSize = sizeof(ddpfPixelFormat);
1110 IDirectDrawSurface2_GetPixelFormat(sys->display, &ddpfPixelFormat);
1111 if ((ddpfPixelFormat.dwFlags & DDPF_RGB) == 0)
1112 return VLC_EGENERIC;
1114 switch (ddpfPixelFormat.dwRGBBitCount) {
1116 fmt->i_chroma = VLC_CODEC_RGB8;
1119 fmt->i_chroma = VLC_CODEC_RGB15;
1122 fmt->i_chroma = VLC_CODEC_RGB16;
1125 fmt->i_chroma = VLC_CODEC_RGB24;
1128 fmt->i_chroma = VLC_CODEC_RGB32;
1131 msg_Err(vd, "unknown screen depth");
1132 return VLC_EGENERIC;
1134 fmt->i_rmask = ddpfPixelFormat.dwRBitMask;
1135 fmt->i_gmask = ddpfPixelFormat.dwGBitMask;
1136 fmt->i_bmask = ddpfPixelFormat.dwBBitMask;
1139 LPDIRECTDRAWSURFACE2 surface;
1140 int ret = DirectXCreateSurface(vd, &surface, fmt, 0, false, allow_sysmem, 0);
1141 if (ret && !allow_sysmem)
1142 ret = DirectXCreateSurface(vd, &surface, fmt, 0, false, true, 0);
1144 return VLC_EGENERIC;
1145 msg_Dbg(vd, "RGB plain surface created successfully");
1147 if (DirectXCheckLockingSurface(surface, surface)) {
1148 DirectXDestroySurface(surface);
1149 return VLC_EGENERIC;
1153 picture_resource_t *rsc = &sys->resource;
1154 rsc->p_sys->front_surface = surface;
1155 rsc->p_sys->surface = surface;
1159 static int DirectXCreatePictureResource(vout_display_t *vd,
1161 video_format_t *fmt)
1163 vout_display_sys_t *sys = vd->sys;
1166 picture_resource_t *rsc = &sys->resource;
1167 rsc->p_sys = calloc(1, sizeof(*rsc->p_sys));
1172 bool allow_hw_yuv = sys->can_blit_fourcc &&
1173 vlc_fourcc_IsYUV(fmt->i_chroma) &&
1174 var_InheritBool(vd, "directx-hw-yuv");
1175 bool allow_overlay = var_InheritBool(vd, "overlay");
1177 /* Try to use an yuv surface */
1179 const vlc_fourcc_t *list = vlc_fourcc_GetYUVFallback(fmt->i_chroma);
1180 /* Try with overlay first */
1181 for (unsigned pass = allow_overlay ? 0 : 1; pass < 2; pass++) {
1182 for (unsigned i = 0; list[i] != 0; i++) {
1183 const DWORD fourcc = DirectXGetFourcc(list[i]);
1188 if (DirectXCreatePictureResourceYuvOverlay(vd, fmt, fourcc))
1191 if (DirectXCreatePictureResourceYuv(vd, fmt, fourcc))
1195 *use_overlay = pass == 0;
1196 fmt->i_chroma = list[i];
1203 return DirectXCreatePictureResourceRgb(vd, fmt);
1205 static void DirectXDestroyPictureResource(vout_display_t *vd)
1207 vout_display_sys_t *sys = vd->sys;
1209 DirectXDestroySurface(sys->resource.p_sys->front_surface);
1212 static int DirectXLock(picture_t *picture)
1215 if (DirectXLockSurface(picture->p_sys->front_surface,
1216 picture->p_sys->surface, &ddsd))
1217 return VLC_EGENERIC;
1219 /* fill in buffer info in first plane */
1220 picture->p->p_pixels = ddsd.lpSurface;
1221 picture->p->i_pitch = ddsd.lPitch;
1222 picture->p->i_lines = picture->format.i_height;
1224 /* Fill chroma planes for planar YUV */
1225 if (picture->format.i_chroma == VLC_CODEC_I420 ||
1226 picture->format.i_chroma == VLC_CODEC_J420 ||
1227 picture->format.i_chroma == VLC_CODEC_YV12) {
1229 for (int n = 1; n < picture->i_planes; n++) {
1230 const plane_t *o = &picture->p[n-1];
1231 plane_t *p = &picture->p[n];
1233 p->p_pixels = o->p_pixels + o->i_lines * o->i_pitch;
1234 p->i_pitch = ddsd.lPitch / 2;
1235 p->i_lines = picture->format.i_height / 2;
1237 /* The dx buffer is always allocated as YV12 */
1238 if (vlc_fourcc_AreUVPlanesSwapped(picture->format.i_chroma, VLC_CODEC_YV12)) {
1239 uint8_t *p_tmp = picture->p[1].p_pixels;
1240 picture->p[1].p_pixels = picture->p[2].p_pixels;
1241 picture->p[2].p_pixels = p_tmp;
1246 static void DirectXUnlock(picture_t *picture)
1248 DirectXUnlockSurface(picture->p_sys->front_surface,
1249 picture->p_sys->surface);
1252 static int DirectXCreatePool(vout_display_t *vd,
1253 bool *use_overlay, video_format_t *fmt)
1255 vout_display_sys_t *sys = vd->sys;
1260 if (DirectXCreatePictureResource(vd, use_overlay, fmt))
1261 return VLC_EGENERIC;
1263 /* Create the associated picture */
1264 picture_resource_t *rsc = &sys->resource;
1265 for (int i = 0; i < PICTURE_PLANE_MAX; i++) {
1266 rsc->p[i].p_pixels = NULL;
1267 rsc->p[i].i_pitch = 0;
1268 rsc->p[i].i_lines = 0;
1270 picture_t *picture = picture_NewFromResource(fmt, rsc);
1272 DirectXDestroyPictureResource(vd);
1277 /* Wrap it into a picture pool */
1278 picture_pool_configuration_t cfg;
1279 memset(&cfg, 0, sizeof(cfg));
1280 cfg.picture_count = 1;
1281 cfg.picture = &picture;
1282 cfg.lock = DirectXLock;
1283 cfg.unlock = DirectXUnlock;
1285 sys->pool = picture_pool_NewExtended(&cfg);
1287 picture_Release(picture);
1288 DirectXDestroyPictureResource(vd);
1293 static void DirectXDestroyPool(vout_display_t *vd)
1295 vout_display_sys_t *sys = vd->sys;
1298 DirectXDestroyPictureResource(vd);
1299 picture_pool_Delete(sys->pool);
1305 * Move or resize overlay surface on video display.
1307 * This function is used to move or resize an overlay surface on the screen.
1308 * Ususally the overlay is moved by the user and thus, by a move or resize
1311 static int DirectXUpdateOverlay(vout_display_t *vd, LPDIRECTDRAWSURFACE2 surface)
1313 vout_display_sys_t *sys = vd->sys;
1315 RECT src = sys->rect_src_clipped;
1316 RECT dst = sys->rect_dest_clipped;
1318 if (sys->use_wallpaper) {
1319 src.left = vd->source.i_x_offset;
1320 src.top = vd->source.i_y_offset;
1321 src.right = vd->source.i_x_offset + vd->source.i_visible_width;
1322 src.bottom = vd->source.i_y_offset + vd->source.i_visible_height;
1323 AlignRect(&src, sys->i_align_src_boundary, sys->i_align_src_size);
1325 vout_display_cfg_t cfg = *vd->cfg;
1326 cfg.display.width = sys->rect_display.right;
1327 cfg.display.height = sys->rect_display.bottom;
1329 vout_display_place_t place;
1330 vout_display_PlacePicture(&place, &vd->source, &cfg, true);
1332 dst.left = sys->rect_display.left + place.x;
1333 dst.top = sys->rect_display.top + place.y;
1334 dst.right = dst.left + place.width;
1335 dst.bottom = dst.top + place.height;
1336 AlignRect(&dst, sys->i_align_dest_boundary, sys->i_align_dest_size);
1341 return VLC_EGENERIC;
1342 surface = sys->resource.p_sys->front_surface;
1345 /* The new window dimensions should already have been computed by the
1346 * caller of this function */
1348 /* Position and show the overlay */
1350 ZeroMemory(&ddofx, sizeof(ddofx));
1351 ddofx.dwSize = sizeof(ddofx);
1352 ddofx.dckDestColorkey.dwColorSpaceLowValue = sys->i_colorkey;
1353 ddofx.dckDestColorkey.dwColorSpaceHighValue = sys->i_colorkey;
1355 HRESULT hr = IDirectDrawSurface2_UpdateOverlay(surface,
1356 &src, sys->display, &dst,
1357 DDOVER_SHOW | DDOVER_KEYDESTOVERRIDE, &ddofx);
1359 msg_Warn(vd, "DirectDrawUpdateOverlay cannot move/resize overlay");
1360 return VLC_EGENERIC;
1366 static void WallpaperChange(vout_display_t *vd, bool use_wallpaper)
1368 vout_display_sys_t *sys = vd->sys;
1370 if (!sys->use_wallpaper == !use_wallpaper)
1373 HWND hwnd = FindWindow(_T("Progman"), NULL);
1375 hwnd = FindWindowEx(hwnd, NULL, _T("SHELLDLL_DefView"), NULL);
1377 hwnd = FindWindowEx(hwnd, NULL, _T("SysListView32"), NULL);
1379 msg_Warn(vd, "couldn't find \"SysListView32\" window, "
1380 "wallpaper mode not supported");
1384 msg_Dbg(vd, "wallpaper mode %s", use_wallpaper ? "enabled" : "disabled");
1385 sys->use_wallpaper = use_wallpaper;
1387 if (sys->use_wallpaper) {
1388 sys->color_bkg = ListView_GetBkColor(hwnd);
1389 sys->color_bkgtxt = ListView_GetTextBkColor(hwnd);
1391 ListView_SetBkColor(hwnd, sys->i_rgb_colorkey);
1392 ListView_SetTextBkColor(hwnd, sys->i_rgb_colorkey);
1394 ListView_SetBkColor(hwnd, sys->color_bkg);
1395 ListView_SetTextBkColor(hwnd, sys->color_bkgtxt);
1398 /* Update desktop */
1399 InvalidateRect(hwnd, NULL, TRUE);
1402 if (sys->use_overlay)
1403 DirectXUpdateOverlay(vd, NULL);
1407 static int WallpaperCallback(vlc_object_t *object, char const *cmd,
1408 vlc_value_t oldval, vlc_value_t newval, void *data)
1410 vout_display_t *vd = (vout_display_t *)object;
1411 vout_display_sys_t *sys = vd->sys;
1412 VLC_UNUSED(cmd); VLC_UNUSED(oldval); VLC_UNUSED(data);
1414 vlc_mutex_lock(&sys->lock);
1415 const bool ch_wallpaper = !sys->wallpaper_requested != !newval.b_bool;
1416 sys->ch_wallpaper |= ch_wallpaper;
1417 sys->wallpaper_requested = newval.b_bool;
1418 vlc_mutex_unlock(&sys->lock);
1420 /* FIXME we should have a way to export variable to be saved */
1422 playlist_t *p_playlist = pl_Get(vd);
1423 /* Modify playlist as well because the vout might have to be
1425 var_Create(p_playlist, "video-wallpaper", VLC_VAR_BOOL);
1426 var_SetBool(p_playlist, "video-wallpaper", newval.b_bool);
1431 /*****************************************************************************
1432 * config variable callback
1433 *****************************************************************************/
1434 static BOOL WINAPI DirectXEnumCallback2(GUID *guid, LPTSTR desc,
1435 LPTSTR drivername, VOID *context,
1438 VLC_UNUSED(guid); VLC_UNUSED(desc); VLC_UNUSED(hmon);
1440 module_config_t *item = context;
1442 item->ppsz_list = xrealloc(item->ppsz_list,
1443 (item->i_list+2) * sizeof(char *));
1444 item->ppsz_list_text = xrealloc(item->ppsz_list_text,
1445 (item->i_list+2) * sizeof(char *));
1447 item->ppsz_list[item->i_list] = strdup(drivername);
1448 item->ppsz_list_text[item->i_list] = NULL;
1450 item->ppsz_list[item->i_list] = NULL;
1451 item->ppsz_list_text[item->i_list] = NULL;
1453 return TRUE; /* Keep enumerating */
1456 static int FindDevicesCallback(vlc_object_t *object, char const *name,
1457 vlc_value_t newval, vlc_value_t oldval, void *data)
1459 VLC_UNUSED(newval); VLC_UNUSED(oldval); VLC_UNUSED(data);
1461 module_config_t *item = config_FindConfig(object, name);
1465 /* Clear-up the current list */
1466 if (item->i_list > 0) {
1468 /* Keep the first entry */
1469 for (i = 1; i < item->i_list; i++) {
1470 free(item->ppsz_list[i]);
1471 free(item->ppsz_list_text[i]);
1473 /* TODO: Remove when no more needed */
1474 item->ppsz_list[i] = NULL;
1475 item->ppsz_list_text[i] = NULL;
1479 /* Load direct draw DLL */
1480 HINSTANCE hddraw_dll = LoadLibrary(_T("DDRAW.DLL"));
1484 /* Enumerate displays */
1485 HRESULT (WINAPI *OurDirectDrawEnumerateEx)(LPDDENUMCALLBACKEXA,
1487 (void *)GetProcAddress(hddraw_dll, _T("DirectDrawEnumerateExA"));
1488 if (OurDirectDrawEnumerateEx)
1489 OurDirectDrawEnumerateEx(DirectXEnumCallback2, item,
1490 DDENUM_ATTACHEDSECONDARYDEVICES);
1492 FreeLibrary(hddraw_dll);
1494 /* Signal change to the interface */
1495 item->b_dirty = true;