dlls/x11drv/xrandr.c

   1 /*
   2  * Wine X11drv Xrandr interface
   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 "wine/port.h"
  23 #include <string.h>
  24 #include <stdio.h>
  25
  26 #ifdef HAVE_LIBXRANDR
  27
  28 #include <X11/Xlib.h>
  29 #include <X11/extensions/Xrandr.h>
  30 #include "x11drv.h"
  31
  32 #include "x11ddraw.h"
  33 #include "xrandr.h"
  34
  35 #include "windef.h"
  36 #include "winbase.h"
  37 #include "wingdi.h"
  38 #include "ddrawi.h"
  39 #include "wine/library.h"
  40 #include "wine/debug.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(xrandr);
  43
  44 static void *xrandr_handle;
  45
  46 /* some default values just in case */
  47 #ifndef SONAME_LIBX11
  48 #define SONAME_LIBX11 "libX11.so"
  49 #endif
  50 #ifndef SONAME_LIBXEXT
  51 #define SONAME_LIBXEXT "libXext.so"
  52 #endif
  53 #ifndef SONAME_LIBXRENDER
  54 #define SONAME_LIBXRENDER "libXrender.so"
  55 #endif
  56 #ifndef SONAME_LIBXRANDR
  57 #define SONAME_LIBXRANDR "libXrandr.so"
  58 #endif
  59
  60 #define MAKE_FUNCPTR(f) static typeof(f) * p##f;
  61 MAKE_FUNCPTR(XRRConfigCurrentConfiguration)
  62 MAKE_FUNCPTR(XRRConfigCurrentRate)
  63 MAKE_FUNCPTR(XRRFreeScreenConfigInfo)
  64 MAKE_FUNCPTR(XRRGetScreenInfo)
  65 MAKE_FUNCPTR(XRRQueryExtension)
  66 MAKE_FUNCPTR(XRRQueryVersion)
  67 MAKE_FUNCPTR(XRRRates)
  68 MAKE_FUNCPTR(XRRSetScreenConfig)
  69 MAKE_FUNCPTR(XRRSetScreenConfigAndRate)
  70 MAKE_FUNCPTR(XRRSizes)
  71 #undef MAKE_FUNCPTR
  72
  73 extern int usexrandr;
  74
  75 static int xrandr_event, xrandr_error, xrandr_major, xrandr_minor;
  76
  77 static LPDDHALMODEINFO dd_modes;
  78 static unsigned int dd_mode_count;
  79 static XRRScreenSize *real_xrandr_sizes;
  80 static short **real_xrandr_rates;
  81 static int real_xrandr_sizes_count;
  82 static int *real_xrandr_rates_count;
  83 static unsigned int real_xrandr_modes_count;
  84
  85 static int load_xrandr(void)
  86 {
  87     int r = 0;
  88
  89     if (wine_dlopen(SONAME_LIBX11, RTLD_NOW|RTLD_GLOBAL, NULL, 0) &&
  90         wine_dlopen(SONAME_LIBXEXT, RTLD_NOW|RTLD_GLOBAL, NULL, 0) &&
  91         wine_dlopen(SONAME_LIBXRENDER, RTLD_NOW|RTLD_GLOBAL, NULL, 0) &&
  92         (xrandr_handle = wine_dlopen(SONAME_LIBXRANDR, RTLD_NOW, NULL, 0)))
  93     {
  94
  95 #define LOAD_FUNCPTR(f) \
  96         if((p##f = wine_dlsym(xrandr_handle, #f, NULL, 0)) == NULL) \
  97             goto sym_not_found;
  98
  99         LOAD_FUNCPTR(XRRConfigCurrentConfiguration)
 100         LOAD_FUNCPTR(XRRConfigCurrentRate)
 101         LOAD_FUNCPTR(XRRFreeScreenConfigInfo)
 102         LOAD_FUNCPTR(XRRGetScreenInfo)
 103         LOAD_FUNCPTR(XRRQueryExtension)
 104         LOAD_FUNCPTR(XRRQueryVersion)
 105         LOAD_FUNCPTR(XRRRates)
 106         LOAD_FUNCPTR(XRRSetScreenConfig)
 107         LOAD_FUNCPTR(XRRSetScreenConfigAndRate)
 108         LOAD_FUNCPTR(XRRSizes)
 109
 110 #undef LOAD_FUNCPTR
 111
 112         r = 1;   /* success */
 113
 114 sym_not_found:
 115         if (!r)  TRACE("Unable to load function ptrs from XRandR library\n");
 116     }
 117     return r;
 118 }
 119
 120 static int XRandRErrorHandler(Display *dpy, XErrorEvent *event, void *arg)
 121 {
 122     return 1;
 123 }
 124
 125
 126 /* create the mode structures */
 127 static void make_modes(void)
 128 {
 129     unsigned int i;
 130     int j;
 131     for (i=0; i<real_xrandr_sizes_count; i++)
 132     {
 133         if (real_xrandr_rates_count[i])
 134         {
 135             for (j=0; j < real_xrandr_rates_count[i]; j++)
 136             {
 137                 X11DRV_Settings_AddOneMode(real_xrandr_sizes[i].width,
 138                                            real_xrandr_sizes[i].height,
 139                                            0, real_xrandr_rates[i][j]);
 140             }
 141         }
 142         else
 143         {
 144             X11DRV_Settings_AddOneMode(real_xrandr_sizes[i].width,
 145                                        real_xrandr_sizes[i].height,
 146                                        0, 0);
 147         }
 148     }
 149 }
 150
 151 static int X11DRV_XRandR_GetCurrentMode(void)
 152 {
 153     SizeID size;
 154     Rotation rot;
 155     Window root;
 156     XRRScreenConfiguration *sc;
 157     short rate;
 158     unsigned int i;
 159     int res = -1;
 160
 161     wine_tsx11_lock();
 162     root = RootWindow (gdi_display, DefaultScreen(gdi_display));
 163     sc = pXRRGetScreenInfo (gdi_display, root);
 164     size = pXRRConfigCurrentConfiguration (sc, &rot);
 165     rate = pXRRConfigCurrentRate (sc);
 166     for (i = 0; i < real_xrandr_modes_count; i++)
 167     {
 168         if ( (dd_modes[i].dwWidth      == real_xrandr_sizes[size].width ) &&
 169              (dd_modes[i].dwHeight     == real_xrandr_sizes[size].height) &&
 170              (dd_modes[i].wRefreshRate == rate                          ) )
 171           {
 172               res = i;
 173           }
 174     }
 175     pXRRFreeScreenConfigInfo(sc);
 176     wine_tsx11_unlock();
 177     if (res == -1)
 178     {
 179         ERR("In unknown mode, returning default\n");
 180         res = 0;
 181     }
 182     return res;
 183 }
 184
 185 static void X11DRV_XRandR_SetCurrentMode(int mode)
 186 {
 187     SizeID size;
 188     Rotation rot;
 189     Window root;
 190     XRRScreenConfiguration *sc;
 191     Status stat = RRSetConfigSuccess;
 192     short rate;
 193     unsigned int i;
 194     int j;
 195     DWORD dwBpp = screen_depth;
 196     if (dwBpp == 24) dwBpp = 32;
 197
 198     wine_tsx11_lock();
 199     root = RootWindow (gdi_display, DefaultScreen(gdi_display));
 200     sc = pXRRGetScreenInfo (gdi_display, root);
 201     size = pXRRConfigCurrentConfiguration (sc, &rot);
 202     if (dwBpp != dd_modes[mode].dwBPP)
 203     {
 204         FIXME("Cannot change screen BPP from %ld to %ld\n", dwBpp, dd_modes[mode].dwBPP);
 205     }
 206     mode = mode%real_xrandr_modes_count;
 207
 208     TRACE("Changing Resolution to %ldx%ld @%d Hz\n",
 209           dd_modes[mode].dwWidth,
 210           dd_modes[mode].dwHeight,
 211           dd_modes[mode].wRefreshRate);
 212
 213     for (i = 0; i < real_xrandr_sizes_count; i++)
 214     {
 215         if ( (dd_modes[mode].dwWidth  == real_xrandr_sizes[i].width ) &&
 216              (dd_modes[mode].dwHeight == real_xrandr_sizes[i].height) )
 217         {
 218             size = i;
 219             if (real_xrandr_rates_count[i])
 220             {
 221                 for (j=0; j < real_xrandr_rates_count[i]; j++)
 222                 {
 223                     if (dd_modes[mode].wRefreshRate == real_xrandr_rates[i][j])
 224                     {
 225                         rate = real_xrandr_rates[i][j];
 226                         TRACE("Resizing X display to %ldx%ld @%d Hz\n",
 227                               dd_modes[mode].dwWidth, dd_modes[mode].dwHeight, rate);
 228                         stat = pXRRSetScreenConfigAndRate (gdi_display, sc, root,
 229                                                           size, rot, rate, CurrentTime);
 230                     }
 231                 }
 232             }
 233             else
 234             {
 235                 TRACE("Resizing X display to %ldx%ld <default Hz>\n",
 236                       dd_modes[mode].dwWidth, dd_modes[mode].dwHeight);
 237                 stat = pXRRSetScreenConfig (gdi_display, sc, root, size, rot, CurrentTime);
 238             }
 239         }
 240     }
 241     pXRRFreeScreenConfigInfo(sc);
 242     wine_tsx11_unlock();
 243     if (stat == RRSetConfigSuccess)
 244         X11DRV_handle_desktop_resize( dd_modes[mode].dwWidth, dd_modes[mode].dwHeight );
 245     else
 246         ERR("Resolution change not successful -- perhaps display has changed?\n");
 247 }
 248
 249 void X11DRV_XRandR_Init(void)
 250 {
 251     Bool ok;
 252     int nmodes = 0;
 253     unsigned int i;
 254
 255     if (xrandr_major) return; /* already initialized? */
 256     if (!usexrandr) return; /* disabled in config */
 257     if (root_window != DefaultRootWindow( gdi_display )) return;
 258     if (!load_xrandr()) return;  /* can't load the Xrandr library */
 259
 260     /* see if Xrandr is available */
 261     wine_tsx11_lock();
 262     ok = pXRRQueryExtension(gdi_display, &xrandr_event, &xrandr_error);
 263     if (ok)
 264     {
 265         X11DRV_expect_error(gdi_display, XRandRErrorHandler, NULL);
 266         ok = pXRRQueryVersion(gdi_display, &xrandr_major, &xrandr_minor);
 267         if (X11DRV_check_error()) ok = FALSE;
 268     }
 269     if (ok)
 270     {
 271         TRACE("Found XRandR - major: %d, minor: %d\n", xrandr_major, xrandr_minor);
 272         /* retrieve modes */
 273         real_xrandr_sizes = pXRRSizes(gdi_display, DefaultScreen(gdi_display), &real_xrandr_sizes_count);
 274         ok = (real_xrandr_sizes_count>0);
 275     }
 276     if (ok)
 277     {
 278         TRACE("XRandR: found %u resolutions sizes\n", real_xrandr_sizes_count);
 279         real_xrandr_rates = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(short *) * real_xrandr_sizes_count);
 280         real_xrandr_rates_count = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(int) * real_xrandr_sizes_count);
 281         for (i=0; i < real_xrandr_sizes_count; i++)
 282         {
 283             real_xrandr_rates[i] = pXRRRates (gdi_display, DefaultScreen(gdi_display), i, &(real_xrandr_rates_count[i]));
 284             TRACE("- at %u: %dx%d (%d rates):", i, real_xrandr_sizes[i].width, real_xrandr_sizes[i].height, real_xrandr_rates_count[i]);
 285             if (real_xrandr_rates_count[i])
 286             {
 287                 int j;
 288                 nmodes += real_xrandr_rates_count[i];
 289                 for (j = 0; j < real_xrandr_rates_count[i]; ++j) {
 290                   if (j > 0) TRACE(",");
 291                   TRACE("  %d", real_xrandr_rates[i][j]);
 292                 }
 293             }
 294             else
 295             {
 296                 nmodes++;
 297                 TRACE(" <default>");
 298             }
 299             TRACE(" Hz\n");
 300         }
 301     }
 302     wine_tsx11_unlock();
 303     if (!ok) return;
 304
 305     real_xrandr_modes_count = nmodes;
 306     TRACE("XRandR modes: count=%d\n", nmodes);
 307
 308     dd_modes = X11DRV_Settings_SetHandlers("XRandR",
 309                                            X11DRV_XRandR_GetCurrentMode,
 310                                            X11DRV_XRandR_SetCurrentMode,
 311                                            nmodes, 1);
 312     make_modes();
 313     X11DRV_Settings_AddDepthModes();
 314     dd_mode_count = X11DRV_Settings_GetModeCount();
 315     X11DRV_Settings_SetDefaultMode(0);
 316
 317     TRACE("Available DD modes: count=%d\n", dd_mode_count);
 318     TRACE("Enabling XRandR\n");
 319 }
 320
 321 void X11DRV_XRandR_Cleanup(void)
 322 {
 323     HeapFree(GetProcessHeap(), 0, real_xrandr_rates);
 324     real_xrandr_rates = NULL;
 325     HeapFree(GetProcessHeap(), 0, real_xrandr_rates_count);
 326     real_xrandr_rates_count = NULL;
 327 }
 328
 329 #endif /* HAVE_LIBXRANDR */