dlls/winex11.drv/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 SONAME_LIBXRANDR
  27
  28 #include <X11/Xlib.h>
  29 #include <X11/extensions/Xrandr.h>
  30 #include "x11drv.h"
  31
  32 #include "xrandr.h"
  33
  34 #include "windef.h"
  35 #include "winbase.h"
  36 #include "wingdi.h"
  37 #include "ddrawi.h"
  38 #include "wine/library.h"
  39 #include "wine/debug.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(xrandr);
  42
  43 static void *xrandr_handle;
  44
  45 #define MAKE_FUNCPTR(f) static typeof(f) * p##f;
  46 MAKE_FUNCPTR(XRRConfigCurrentConfiguration)
  47 MAKE_FUNCPTR(XRRConfigCurrentRate)
  48 MAKE_FUNCPTR(XRRFreeScreenConfigInfo)
  49 MAKE_FUNCPTR(XRRGetScreenInfo)
  50 MAKE_FUNCPTR(XRRQueryExtension)
  51 MAKE_FUNCPTR(XRRQueryVersion)
  52 MAKE_FUNCPTR(XRRRates)
  53 MAKE_FUNCPTR(XRRSetScreenConfig)
  54 MAKE_FUNCPTR(XRRSetScreenConfigAndRate)
  55 MAKE_FUNCPTR(XRRSizes)
  56 #undef MAKE_FUNCPTR
  57
  58 extern int usexrandr;
  59
  60 static int xrandr_event, xrandr_error, xrandr_major, xrandr_minor;
  61
  62 static LPDDHALMODEINFO dd_modes;
  63 static unsigned int dd_mode_count;
  64 static XRRScreenSize *real_xrandr_sizes;
  65 static short **real_xrandr_rates;
  66 static int real_xrandr_sizes_count;
  67 static int *real_xrandr_rates_count;
  68 static unsigned int real_xrandr_modes_count;
  69
  70 static int load_xrandr(void)
  71 {
  72     int r = 0;
  73
  74     if (wine_dlopen(SONAME_LIBXRENDER, RTLD_NOW|RTLD_GLOBAL, NULL, 0) &&
  75         (xrandr_handle = wine_dlopen(SONAME_LIBXRANDR, RTLD_NOW, NULL, 0)))
  76     {
  77
  78 #define LOAD_FUNCPTR(f) \
  79         if((p##f = wine_dlsym(xrandr_handle, #f, NULL, 0)) == NULL) \
  80             goto sym_not_found;
  81
  82         LOAD_FUNCPTR(XRRConfigCurrentConfiguration)
  83         LOAD_FUNCPTR(XRRConfigCurrentRate)
  84         LOAD_FUNCPTR(XRRFreeScreenConfigInfo)
  85         LOAD_FUNCPTR(XRRGetScreenInfo)
  86         LOAD_FUNCPTR(XRRQueryExtension)
  87         LOAD_FUNCPTR(XRRQueryVersion)
  88         LOAD_FUNCPTR(XRRRates)
  89         LOAD_FUNCPTR(XRRSetScreenConfig)
  90         LOAD_FUNCPTR(XRRSetScreenConfigAndRate)
  91         LOAD_FUNCPTR(XRRSizes)
  92
  93 #undef LOAD_FUNCPTR
  94
  95         r = 1;   /* success */
  96
  97 sym_not_found:
  98         if (!r)  TRACE("Unable to load function ptrs from XRandR library\n");
  99     }
 100     return r;
 101 }
 102
 103 static int XRandRErrorHandler(Display *dpy, XErrorEvent *event, void *arg)
 104 {
 105     return 1;
 106 }
 107
 108
 109 /* create the mode structures */
 110 static void make_modes(void)
 111 {
 112     int i, j;
 113
 114     for (i=0; i<real_xrandr_sizes_count; i++)
 115     {
 116         if (real_xrandr_rates_count[i])
 117         {
 118             for (j=0; j < real_xrandr_rates_count[i]; j++)
 119             {
 120                 X11DRV_Settings_AddOneMode(real_xrandr_sizes[i].width,
 121                                            real_xrandr_sizes[i].height,
 122                                            0, real_xrandr_rates[i][j]);
 123             }
 124         }
 125         else
 126         {
 127             X11DRV_Settings_AddOneMode(real_xrandr_sizes[i].width,
 128                                        real_xrandr_sizes[i].height,
 129                                        0, 0);
 130         }
 131     }
 132 }
 133
 134 static int X11DRV_XRandR_GetCurrentMode(void)
 135 {
 136     SizeID size;
 137     Rotation rot;
 138     Window root;
 139     XRRScreenConfiguration *sc;
 140     short rate;
 141     unsigned int i;
 142     int res = -1;
 143
 144     wine_tsx11_lock();
 145     root = RootWindow (gdi_display, DefaultScreen(gdi_display));
 146     sc = pXRRGetScreenInfo (gdi_display, root);
 147     size = pXRRConfigCurrentConfiguration (sc, &rot);
 148     rate = pXRRConfigCurrentRate (sc);
 149     pXRRFreeScreenConfigInfo(sc);
 150     wine_tsx11_unlock();
 151     for (i = 0; i < real_xrandr_modes_count; i++)
 152     {
 153         if ( (dd_modes[i].dwWidth      == real_xrandr_sizes[size].width ) &&
 154              (dd_modes[i].dwHeight     == real_xrandr_sizes[size].height) &&
 155              (dd_modes[i].wRefreshRate == rate                          ) )
 156           {
 157               res = i;
 158               break;
 159           }
 160     }
 161     if (res == -1)
 162     {
 163         ERR("In unknown mode, returning default\n");
 164         res = 0;
 165     }
 166     return res;
 167 }
 168
 169 static LONG X11DRV_XRandR_SetCurrentMode(int mode)
 170 {
 171     SizeID size;
 172     Rotation rot;
 173     Window root;
 174     XRRScreenConfiguration *sc;
 175     Status stat = RRSetConfigSuccess;
 176     short rate;
 177     unsigned int i;
 178     int j;
 179
 180     wine_tsx11_lock();
 181     root = RootWindow (gdi_display, DefaultScreen(gdi_display));
 182     sc = pXRRGetScreenInfo (gdi_display, root);
 183     size = pXRRConfigCurrentConfiguration (sc, &rot);
 184     mode = mode%real_xrandr_modes_count;
 185
 186     TRACE("Changing Resolution to %dx%d @%d Hz\n",
 187           dd_modes[mode].dwWidth,
 188           dd_modes[mode].dwHeight,
 189           dd_modes[mode].wRefreshRate);
 190
 191     for (i = 0; i < real_xrandr_sizes_count; i++)
 192     {
 193         if ( (dd_modes[mode].dwWidth  == real_xrandr_sizes[i].width ) &&
 194              (dd_modes[mode].dwHeight == real_xrandr_sizes[i].height) )
 195         {
 196             size = i;
 197             if (real_xrandr_rates_count[i])
 198             {
 199                 for (j=0; j < real_xrandr_rates_count[i]; j++)
 200                 {
 201                     if (dd_modes[mode].wRefreshRate == real_xrandr_rates[i][j])
 202                     {
 203                         rate = real_xrandr_rates[i][j];
 204                         TRACE("Resizing X display to %dx%d @%d Hz\n",
 205                               dd_modes[mode].dwWidth, dd_modes[mode].dwHeight, rate);
 206                         stat = pXRRSetScreenConfigAndRate (gdi_display, sc, root,
 207                                                           size, rot, rate, CurrentTime);
 208                         break;
 209                     }
 210                 }
 211             }
 212             else
 213             {
 214                 TRACE("Resizing X display to %dx%d <default Hz>\n",
 215                       dd_modes[mode].dwWidth, dd_modes[mode].dwHeight);
 216                 stat = pXRRSetScreenConfig (gdi_display, sc, root, size, rot, CurrentTime);
 217             }
 218             break;
 219         }
 220     }
 221     pXRRFreeScreenConfigInfo(sc);
 222     wine_tsx11_unlock();
 223     if (stat == RRSetConfigSuccess)
 224     {
 225         X11DRV_resize_desktop( dd_modes[mode].dwWidth, dd_modes[mode].dwHeight );
 226         return DISP_CHANGE_SUCCESSFUL;
 227     }
 228
 229     ERR("Resolution change not successful -- perhaps display has changed?\n");
 230     return DISP_CHANGE_FAILED;
 231 }
 232
 233 void X11DRV_XRandR_Init(void)
 234 {
 235     Bool ok;
 236     int i, nmodes = 0;
 237
 238     if (xrandr_major) return; /* already initialized? */
 239     if (!usexrandr) return; /* disabled in config */
 240     if (root_window != DefaultRootWindow( gdi_display )) return;
 241     if (!load_xrandr()) return;  /* can't load the Xrandr library */
 242
 243     /* see if Xrandr is available */
 244     wine_tsx11_lock();
 245     ok = pXRRQueryExtension(gdi_display, &xrandr_event, &xrandr_error);
 246     if (ok)
 247     {
 248         X11DRV_expect_error(gdi_display, XRandRErrorHandler, NULL);
 249         ok = pXRRQueryVersion(gdi_display, &xrandr_major, &xrandr_minor);
 250         if (X11DRV_check_error()) ok = FALSE;
 251     }
 252     if (ok)
 253     {
 254         TRACE("Found XRandR - major: %d, minor: %d\n", xrandr_major, xrandr_minor);
 255         /* retrieve modes */
 256         real_xrandr_sizes = pXRRSizes(gdi_display, DefaultScreen(gdi_display), &real_xrandr_sizes_count);
 257         ok = (real_xrandr_sizes_count>0);
 258     }
 259     if (ok)
 260     {
 261         TRACE("XRandR: found %u resolutions sizes\n", real_xrandr_sizes_count);
 262         real_xrandr_rates = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(short *) * real_xrandr_sizes_count);
 263         real_xrandr_rates_count = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(int) * real_xrandr_sizes_count);
 264         for (i=0; i < real_xrandr_sizes_count; i++)
 265         {
 266             real_xrandr_rates[i] = pXRRRates (gdi_display, DefaultScreen(gdi_display), i, &(real_xrandr_rates_count[i]));
 267             TRACE("- at %d: %dx%d (%d rates):", i, real_xrandr_sizes[i].width, real_xrandr_sizes[i].height, real_xrandr_rates_count[i]);
 268             if (real_xrandr_rates_count[i])
 269             {
 270                 int j;
 271                 nmodes += real_xrandr_rates_count[i];
 272                 for (j = 0; j < real_xrandr_rates_count[i]; ++j) {
 273                   if (j > 0) TRACE(",");
 274                   TRACE("  %d", real_xrandr_rates[i][j]);
 275                 }
 276             }
 277             else
 278             {
 279                 nmodes++;
 280                 TRACE(" <default>");
 281             }
 282             TRACE(" Hz\n");
 283         }
 284     }
 285     wine_tsx11_unlock();
 286     if (!ok) return;
 287
 288     real_xrandr_modes_count = nmodes;
 289     TRACE("XRandR modes: count=%d\n", nmodes);
 290
 291     dd_modes = X11DRV_Settings_SetHandlers("XRandR",
 292                                            X11DRV_XRandR_GetCurrentMode,
 293                                            X11DRV_XRandR_SetCurrentMode,
 294                                            nmodes, 1);
 295     make_modes();
 296     X11DRV_Settings_AddDepthModes();
 297     dd_mode_count = X11DRV_Settings_GetModeCount();
 298
 299     TRACE("Available DD modes: count=%d\n", dd_mode_count);
 300     TRACE("Enabling XRandR\n");
 301 }
 302
 303 #endif /* SONAME_LIBXRANDR */