dlls/winex11.drv/settings.c

   1 /*
   2  * Wine X11drv display settings functions
   3  *
   4  * Copyright 2003 Alexander James Pasadyn
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include <string.h>
  23 #include <stdio.h>
  24 #include <assert.h>
  25
  26 #define NONAMELESSUNION
  27 #define NONAMELESSSTRUCT
  28
  29 #include "x11drv.h"
  30
  31 #include "windef.h"
  32 #include "winreg.h"
  33 #include "wingdi.h"
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(x11settings);
  37
  38 /*
  39  * The DDHALMODEINFO type is used to hold all the mode information.
  40  * This is done because the array of DDHALMODEINFO structures must be
  41  * created for use by DirectDraw anyway.
  42  */
  43 static LPDDHALMODEINFO dd_modes = NULL;
  44 static unsigned int dd_mode_count = 0;
  45 static unsigned int dd_max_modes = 0;
  46 /* All Windows drivers seen so far either support 32 bit depths, or 24 bit depths, but never both. So if we have
  47  * a 32 bit framebuffer, report 32 bit bpps, otherwise 24 bit ones.
  48  */
  49 static const unsigned int depths_24[]  = {8, 16, 24};
  50 static const unsigned int depths_32[]  = {8, 16, 32};
  51
  52 /* pointers to functions that actually do the hard stuff */
  53 static int (*pGetCurrentMode)(void);
  54 static LONG (*pSetCurrentMode)(int mode);
  55 static const char *handler_name;
  56
  57 /*
  58  * Set the handlers for resolution changing functions
  59  * and initialize the master list of modes
  60  */
  61 LPDDHALMODEINFO X11DRV_Settings_SetHandlers(const char *name,
  62                                  int (*pNewGCM)(void),
  63                                  LONG (*pNewSCM)(int),
  64                                  unsigned int nmodes,
  65                                  int reserve_depths)
  66 {
  67     handler_name = name;
  68     pGetCurrentMode = pNewGCM;
  69     pSetCurrentMode = pNewSCM;
  70     TRACE("Resolution settings now handled by: %s\n", name);
  71     if (reserve_depths)
  72         /* leave room for other depths */
  73         dd_max_modes = (3+1)*(nmodes);
  74     else
  75         dd_max_modes = nmodes;
  76
  77     if (dd_modes)
  78     {
  79         TRACE("Destroying old display modes array\n");
  80         HeapFree(GetProcessHeap(), 0, dd_modes);
  81     }
  82     dd_modes = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DDHALMODEINFO) * dd_max_modes);
  83     dd_mode_count = 0;
  84     TRACE("Initialized new display modes array\n");
  85     return dd_modes;
  86 }
  87
  88 /* Add one mode to the master list */
  89 void X11DRV_Settings_AddOneMode(unsigned int width, unsigned int height, unsigned int bpp, unsigned int freq)
  90 {
  91     LPDDHALMODEINFO info = &(dd_modes[dd_mode_count]);
  92     DWORD dwBpp = screen_bpp;
  93     if (dd_mode_count >= dd_max_modes)
  94     {
  95         ERR("Maximum modes (%d) exceeded\n", dd_max_modes);
  96         return;
  97     }
  98     if (bpp == 0) bpp = dwBpp;
  99     info->dwWidth        = width;
 100     info->dwHeight       = height;
 101     info->wRefreshRate   = freq;
 102     info->lPitch         = 0;
 103     info->dwBPP          = bpp;
 104     info->wFlags         = 0;
 105     info->dwRBitMask     = 0;
 106     info->dwGBitMask     = 0;
 107     info->dwBBitMask     = 0;
 108     info->dwAlphaBitMask = 0;
 109     TRACE("initialized mode %d: %dx%dx%d @%d Hz (%s)\n",
 110           dd_mode_count, width, height, bpp, freq, handler_name);
 111     dd_mode_count++;
 112 }
 113
 114 /* copy all the current modes using the other color depths */
 115 void X11DRV_Settings_AddDepthModes(void)
 116 {
 117     int i, j;
 118     int existing_modes = dd_mode_count;
 119     DWORD dwBpp = screen_bpp;
 120     const DWORD *depths = screen_bpp == 32 ? depths_32 : depths_24;
 121
 122     for (j=0; j<3; j++)
 123     {
 124         if (depths[j] != dwBpp)
 125         {
 126             for (i=0; i < existing_modes; i++)
 127             {
 128                 X11DRV_Settings_AddOneMode(dd_modes[i].dwWidth, dd_modes[i].dwHeight,
 129                                            depths[j], dd_modes[i].wRefreshRate);
 130             }
 131         }
 132     }
 133 }
 134
 135 /* return the number of modes that are initialized */
 136 unsigned int X11DRV_Settings_GetModeCount(void)
 137 {
 138     return dd_mode_count;
 139 }
 140
 141 /***********************************************************************
 142  * Default handlers if resolution switching is not enabled
 143  *
 144  */
 145 static int X11DRV_nores_GetCurrentMode(void)
 146 {
 147     return 0;
 148 }
 149
 150 static LONG X11DRV_nores_SetCurrentMode(int mode)
 151 {
 152     if (mode == 0) return DISP_CHANGE_SUCCESSFUL;
 153     TRACE("Ignoring mode change request mode=%d\n", mode);
 154     return DISP_CHANGE_FAILED;
 155 }
 156
 157 /* default handler only gets the current X desktop resolution */
 158 void X11DRV_Settings_Init(void)
 159 {
 160     X11DRV_Settings_SetHandlers("NoRes",
 161                                 X11DRV_nores_GetCurrentMode,
 162                                 X11DRV_nores_SetCurrentMode,
 163                                 1, 0);
 164     X11DRV_Settings_AddOneMode(screen_width, screen_height, 0, 60);
 165 }
 166
 167 static BOOL get_display_device_reg_key(char *key, unsigned len)
 168 {
 169     static const char display_device_guid_prop[] = "__wine_display_device_guid";
 170     static const char video_path[] = "System\\CurrentControlSet\\Control\\Video\\{";
 171     static const char display0[] = "}\\0000";
 172     ATOM guid_atom;
 173
 174     assert(len >= sizeof(video_path) + sizeof(display0) + 40);
 175
 176     guid_atom = HandleToULong(GetPropA(GetDesktopWindow(), display_device_guid_prop));
 177     if (!guid_atom) return FALSE;
 178
 179     memcpy(key, video_path, sizeof(video_path));
 180
 181     if (!GlobalGetAtomNameA(guid_atom, key + strlen(key), 40))
 182         return FALSE;
 183
 184     strcat(key, display0);
 185
 186     TRACE("display device key %s\n", wine_dbgstr_a(key));
 187     return TRUE;
 188 }
 189
 190 static BOOL read_registry_settings(DEVMODEW *dm)
 191 {
 192     char wine_x11_reg_key[128];
 193     HKEY hkey;
 194     DWORD type, size;
 195     BOOL ret = TRUE;
 196
 197     dm->dmFields = 0;
 198
 199     if (!get_display_device_reg_key(wine_x11_reg_key, sizeof(wine_x11_reg_key)))
 200         return FALSE;
 201
 202     if (RegOpenKeyExA(HKEY_CURRENT_CONFIG, wine_x11_reg_key, 0, KEY_READ, &hkey))
 203         return FALSE;
 204
 205 #define query_value(name, data) \
 206     size = sizeof(DWORD); \
 207     if (RegQueryValueExA(hkey, name, 0, &type, (LPBYTE)(data), &size) || \
 208         type != REG_DWORD || size != sizeof(DWORD)) \
 209         ret = FALSE
 210
 211     query_value("DefaultSettings.BitsPerPel", &dm->dmBitsPerPel);
 212     dm->dmFields |= DM_BITSPERPEL;
 213     query_value("DefaultSettings.XResolution", &dm->dmPelsWidth);
 214     dm->dmFields |= DM_PELSWIDTH;
 215     query_value("DefaultSettings.YResolution", &dm->dmPelsHeight);
 216     dm->dmFields |= DM_PELSHEIGHT;
 217     query_value("DefaultSettings.VRefresh", &dm->dmDisplayFrequency);
 218     dm->dmFields |= DM_DISPLAYFREQUENCY;
 219     query_value("DefaultSettings.Flags", &dm->u2.dmDisplayFlags);
 220     dm->dmFields |= DM_DISPLAYFLAGS;
 221     query_value("DefaultSettings.XPanning", &dm->u1.s2.dmPosition.x);
 222     query_value("DefaultSettings.YPanning", &dm->u1.s2.dmPosition.y);
 223     query_value("DefaultSettings.Orientation", &dm->u1.s2.dmDisplayOrientation);
 224     query_value("DefaultSettings.FixedOutput", &dm->u1.s2.dmDisplayFixedOutput);
 225
 226 #undef query_value
 227
 228     RegCloseKey(hkey);
 229     return ret;
 230 }
 231
 232 static BOOL write_registry_settings(const DEVMODEW *dm)
 233 {
 234     char wine_x11_reg_key[128];
 235     HKEY hkey;
 236     BOOL ret = TRUE;
 237
 238     if (!get_display_device_reg_key(wine_x11_reg_key, sizeof(wine_x11_reg_key)))
 239         return FALSE;
 240
 241     if (RegCreateKeyExA(HKEY_CURRENT_CONFIG, wine_x11_reg_key, 0, NULL,
 242                         REG_OPTION_VOLATILE, KEY_WRITE, NULL, &hkey, NULL))
 243         return FALSE;
 244
 245 #define set_value(name, data) \
 246     if (RegSetValueExA(hkey, name, 0, REG_DWORD, (const BYTE*)(data), sizeof(DWORD))) \
 247         ret = FALSE
 248
 249     set_value("DefaultSettings.BitsPerPel", &dm->dmBitsPerPel);
 250     set_value("DefaultSettings.XResolution", &dm->dmPelsWidth);
 251     set_value("DefaultSettings.YResolution", &dm->dmPelsHeight);
 252     set_value("DefaultSettings.VRefresh", &dm->dmDisplayFrequency);
 253     set_value("DefaultSettings.Flags", &dm->u2.dmDisplayFlags);
 254     set_value("DefaultSettings.XPanning", &dm->u1.s2.dmPosition.x);
 255     set_value("DefaultSettings.YPanning", &dm->u1.s2.dmPosition.y);
 256     set_value("DefaultSettings.Orientation", &dm->u1.s2.dmDisplayOrientation);
 257     set_value("DefaultSettings.FixedOutput", &dm->u1.s2.dmDisplayFixedOutput);
 258
 259 #undef set_value
 260
 261     RegCloseKey(hkey);
 262     return ret;
 263 }
 264
 265 /***********************************************************************
 266  *              EnumDisplaySettingsEx  (X11DRV.@)
 267  *
 268  */
 269 BOOL CDECL X11DRV_EnumDisplaySettingsEx( LPCWSTR name, DWORD n, LPDEVMODEW devmode, DWORD flags)
 270 {
 271     static const WCHAR dev_name[CCHDEVICENAME] =
 272         { 'W','i','n','e',' ','X','1','1',' ','d','r','i','v','e','r',0 };
 273
 274     devmode->dmSize = FIELD_OFFSET(DEVMODEW, dmICMMethod);
 275     devmode->dmSpecVersion = DM_SPECVERSION;
 276     devmode->dmDriverVersion = DM_SPECVERSION;
 277     memcpy(devmode->dmDeviceName, dev_name, sizeof(dev_name));
 278     devmode->dmDriverExtra = 0;
 279     devmode->u2.dmDisplayFlags = 0;
 280     devmode->dmDisplayFrequency = 0;
 281     devmode->u1.s2.dmPosition.x = 0;
 282     devmode->u1.s2.dmPosition.y = 0;
 283     devmode->u1.s2.dmDisplayOrientation = 0;
 284     devmode->u1.s2.dmDisplayFixedOutput = 0;
 285
 286     if (n == ENUM_CURRENT_SETTINGS)
 287     {
 288         TRACE("mode %d (current) -- getting current mode (%s)\n", n, handler_name);
 289         n = pGetCurrentMode();
 290     }
 291     if (n == ENUM_REGISTRY_SETTINGS)
 292     {
 293         TRACE("mode %d (registry) -- getting default mode (%s)\n", n, handler_name);
 294         return read_registry_settings(devmode);
 295     }
 296     if (n < dd_mode_count)
 297     {
 298         devmode->dmPelsWidth = dd_modes[n].dwWidth;
 299         devmode->dmPelsHeight = dd_modes[n].dwHeight;
 300         devmode->dmBitsPerPel = dd_modes[n].dwBPP;
 301         devmode->dmDisplayFrequency = dd_modes[n].wRefreshRate;
 302         devmode->dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL |
 303                             DM_DISPLAYFLAGS;
 304         if (devmode->dmDisplayFrequency)
 305         {
 306             devmode->dmFields |= DM_DISPLAYFREQUENCY;
 307             TRACE("mode %d -- %dx%dx%dbpp @%d Hz (%s)\n", n,
 308                   devmode->dmPelsWidth, devmode->dmPelsHeight, devmode->dmBitsPerPel,
 309                   devmode->dmDisplayFrequency, handler_name);
 310         }
 311         else
 312         {
 313             TRACE("mode %d -- %dx%dx%dbpp (%s)\n", n,
 314                   devmode->dmPelsWidth, devmode->dmPelsHeight, devmode->dmBitsPerPel,
 315                   handler_name);
 316         }
 317         return TRUE;
 318     }
 319     TRACE("mode %d -- not present (%s)\n", n, handler_name);
 320     SetLastError(ERROR_NO_MORE_FILES);
 321     return FALSE;
 322 }
 323
 324 #define _X_FIELD(prefix, bits) if ((fields) & prefix##_##bits) {p+=sprintf(p, "%s%s", first ? "" : ",", #bits); first=FALSE;}
 325 static const char * _CDS_flags(DWORD fields)
 326 {
 327     BOOL first = TRUE;
 328     char buf[128];
 329     char *p = buf;
 330     _X_FIELD(CDS,UPDATEREGISTRY);_X_FIELD(CDS,TEST);_X_FIELD(CDS,FULLSCREEN);
 331     _X_FIELD(CDS,GLOBAL);_X_FIELD(CDS,SET_PRIMARY);_X_FIELD(CDS,RESET);
 332     _X_FIELD(CDS,SETRECT);_X_FIELD(CDS,NORESET);
 333     *p = 0;
 334     return wine_dbg_sprintf("%s", buf);
 335 }
 336 static const char * _DM_fields(DWORD fields)
 337 {
 338     BOOL first = TRUE;
 339     char buf[128];
 340     char *p = buf;
 341     _X_FIELD(DM,BITSPERPEL);_X_FIELD(DM,PELSWIDTH);_X_FIELD(DM,PELSHEIGHT);
 342     _X_FIELD(DM,DISPLAYFLAGS);_X_FIELD(DM,DISPLAYFREQUENCY);_X_FIELD(DM,POSITION);
 343     *p = 0;
 344     return wine_dbg_sprintf("%s", buf);
 345 }
 346 #undef _X_FIELD
 347
 348 /***********************************************************************
 349  *              ChangeDisplaySettingsEx  (X11DRV.@)
 350  *
 351  */
 352 LONG CDECL X11DRV_ChangeDisplaySettingsEx( LPCWSTR devname, LPDEVMODEW devmode,
 353                                            HWND hwnd, DWORD flags, LPVOID lpvoid )
 354 {
 355     DWORD i, dwBpp = 0;
 356     DEVMODEW dm;
 357     BOOL def_mode = TRUE;
 358
 359     TRACE("(%s,%p,%p,0x%08x,%p)\n",debugstr_w(devname),devmode,hwnd,flags,lpvoid);
 360     TRACE("flags=%s\n",_CDS_flags(flags));
 361     if (devmode)
 362     {
 363         /* this is the minimal dmSize that XP accepts */
 364         if (devmode->dmSize < FIELD_OFFSET(DEVMODEW, dmFields))
 365             return DISP_CHANGE_FAILED;
 366
 367         TRACE("DM_fields=%s\n",_DM_fields(devmode->dmFields));
 368         TRACE("width=%d height=%d bpp=%d freq=%d (%s)\n",
 369               devmode->dmPelsWidth,devmode->dmPelsHeight,
 370               devmode->dmBitsPerPel,devmode->dmDisplayFrequency, handler_name);
 371
 372         dwBpp = devmode->dmBitsPerPel;
 373         if (devmode->dmFields & DM_BITSPERPEL) def_mode &= !dwBpp;
 374         if (devmode->dmFields & DM_PELSWIDTH)  def_mode &= !devmode->dmPelsWidth;
 375         if (devmode->dmFields & DM_PELSHEIGHT) def_mode &= !devmode->dmPelsHeight;
 376         if (devmode->dmFields & DM_DISPLAYFREQUENCY) def_mode &= !devmode->dmDisplayFrequency;
 377     }
 378
 379     if (def_mode || !dwBpp)
 380     {
 381         if (!X11DRV_EnumDisplaySettingsEx(devname, ENUM_REGISTRY_SETTINGS, &dm, 0))
 382         {
 383             ERR("Default mode not found!\n");
 384             return DISP_CHANGE_BADMODE;
 385         }
 386         if (def_mode)
 387         {
 388             TRACE("Return to original display mode (%s)\n", handler_name);
 389             devmode = &dm;
 390         }
 391         dwBpp = dm.dmBitsPerPel;
 392     }
 393
 394     if ((devmode->dmFields & (DM_PELSWIDTH | DM_PELSHEIGHT)) != (DM_PELSWIDTH | DM_PELSHEIGHT))
 395     {
 396         WARN("devmode doesn't specify the resolution: %04x\n", devmode->dmFields);
 397         return DISP_CHANGE_BADMODE;
 398     }
 399
 400     for (i = 0; i < dd_mode_count; i++)
 401     {
 402         if (devmode->dmFields & DM_BITSPERPEL)
 403         {
 404             if (dwBpp != dd_modes[i].dwBPP)
 405                 continue;
 406         }
 407         if (devmode->dmFields & DM_PELSWIDTH)
 408         {
 409             if (devmode->dmPelsWidth != dd_modes[i].dwWidth)
 410                 continue;
 411         }
 412         if (devmode->dmFields & DM_PELSHEIGHT)
 413         {
 414             if (devmode->dmPelsHeight != dd_modes[i].dwHeight)
 415                 continue;
 416         }
 417         if ((devmode->dmFields & DM_DISPLAYFREQUENCY) && (dd_modes[i].wRefreshRate != 0) &&
 418             devmode->dmDisplayFrequency != 0)
 419         {
 420             if (devmode->dmDisplayFrequency != dd_modes[i].wRefreshRate)
 421                 continue;
 422         }
 423         /* we have a valid mode */
 424         TRACE("Requested display settings match mode %d (%s)\n", i, handler_name);
 425
 426         if (flags & CDS_UPDATEREGISTRY)
 427             write_registry_settings(devmode);
 428
 429         if (!(flags & (CDS_TEST | CDS_NORESET)))
 430             return pSetCurrentMode(i);
 431
 432         return DISP_CHANGE_SUCCESSFUL;
 433     }
 434
 435     /* no valid modes found */
 436     ERR("No matching mode found %ux%ux%u @%u! (%s)\n",
 437         devmode->dmPelsWidth, devmode->dmPelsHeight,
 438         devmode->dmBitsPerPel, devmode->dmDisplayFrequency, handler_name);
 439     return DISP_CHANGE_BADMODE;
 440 }