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 HAVE_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 /* some default values just in case */
  46 #ifndef SONAME_LIBX11
  47 #define SONAME_LIBX11 "libX11.so"
  48 #endif
  49 #ifndef SONAME_LIBXEXT
  50 #define SONAME_LIBXEXT "libXext.so"
  51 #endif
  52 #ifndef SONAME_LIBXRENDER
  53 #define SONAME_LIBXRENDER "libXrender.so"
  54 #endif
  55 #ifndef SONAME_LIBXRANDR
  56 #define SONAME_LIBXRANDR "libXrandr.so"
  57 #endif
  58
  59 #define MAKE_FUNCPTR(f) static typeof(f) * p##f;
  60 MAKE_FUNCPTR(XRRConfigCurrentConfiguration)
  61 MAKE_FUNCPTR(XRRConfigCurrentRate)
  62 MAKE_FUNCPTR(XRRFreeScreenConfigInfo)
  63 MAKE_FUNCPTR(XRRGetScreenInfo)
  64 MAKE_FUNCPTR(XRRQueryExtension)
  65 MAKE_FUNCPTR(XRRQueryVersion)
  66 MAKE_FUNCPTR(XRRRates)
  67 MAKE_FUNCPTR(XRRSetScreenConfig)
  68 MAKE_FUNCPTR(XRRSetScreenConfigAndRate)
  69 MAKE_FUNCPTR(XRRSizes)
  70 #undef MAKE_FUNCPTR
  71
  72 extern int usexrandr;
  73
  74 static int xrandr_event, xrandr_error, xrandr_major, xrandr_minor;
  75
  76 static LPDDHALMODEINFO dd_modes;
  77 static unsigned int dd_mode_count;
  78 static XRRScreenSize *real_xrandr_sizes;
  79 static short **real_xrandr_rates;
  80 static int real_xrandr_sizes_count;
  81 static int *real_xrandr_rates_count;
  82 static unsigned int real_xrandr_modes_count;
  83
  84 static int load_xrandr(void)
  85 {
  86     int r = 0;
  87
  88     if (wine_dlopen(SONAME_LIBX11, RTLD_NOW|RTLD_GLOBAL, NULL, 0) &&
  89         wine_dlopen(SONAME_LIBXEXT, RTLD_NOW|RTLD_GLOBAL, NULL, 0) &&
  90         wine_dlopen(SONAME_LIBXRENDER, RTLD_NOW|RTLD_GLOBAL, NULL, 0) &&
  91         (xrandr_handle = wine_dlopen(SONAME_LIBXRANDR, RTLD_NOW, NULL, 0)))
  92     {
  93
  94 #define LOAD_FUNCPTR(f) \
  95         if((p##f = wine_dlsym(xrandr_handle, #f, NULL, 0)) == NULL) \
  96             goto sym_not_found;
  97
  98         LOAD_FUNCPTR(XRRConfigCurrentConfiguration)
  99         LOAD_FUNCPTR(XRRConfigCurrentRate)
 100         LOAD_FUNCPTR(XRRFreeScreenConfigInfo)
 101         LOAD_FUNCPTR(XRRGetScreenInfo)
 102         LOAD_FUNCPTR(XRRQueryExtension)
 103         LOAD_FUNCPTR(XRRQueryVersion)
 104         LOAD_FUNCPTR(XRRRates)
 105         LOAD_FUNCPTR(XRRSetScreenConfig)
 106         LOAD_FUNCPTR(XRRSetScreenConfigAndRate)
 107         LOAD_FUNCPTR(XRRSizes)
 108
 109 #undef LOAD_FUNCPTR
 110
 111         r = 1;   /* success */
 112
 113 sym_not_found:
 114         if (!r)  TRACE("Unable to load function ptrs from XRandR library\n");
 115     }
 116     return r;
 117 }
 118
 119 static int XRandRErrorHandler(Display *dpy, XErrorEvent *event, void *arg)
 120 {
 121     return 1;
 122 }
 123
 124
 125 /* create the mode structures */
 126 static void make_modes(void)
 127 {
 128     unsigned int i;
 129     int j;
 130     for (i=0; i<real_xrandr_sizes_count; i++)
 131     {
 132         if (real_xrandr_rates_count[i])
 133         {
 134             for (j=0; j < real_xrandr_rates_count[i]; j++)
 135             {
 136                 X11DRV_Settings_AddOneMode(real_xrandr_sizes[i].width,
 137                                            real_xrandr_sizes[i].height,
 138                                            0, real_xrandr_rates[i][j]);
 139             }
 140         }
 141         else
 142         {
 143             X11DRV_Settings_AddOneMode(real_xrandr_sizes[i].width,
 144                                        real_xrandr_sizes[i].height,
 145                                        0, 0);
 146         }
 147     }
 148 }
 149
 150 static int X11DRV_XRandR_GetCurrentMode(void)
 151 {
 152     SizeID size;
 153     Rotation rot;
 154     Window root;
 155     XRRScreenConfiguration *sc;
 156     short rate;
 157     unsigned int i;
 158     int res = -1;
 159
 160     wine_tsx11_lock();
 161     root = RootWindow (gdi_display, DefaultScreen(gdi_display));
 162     sc = pXRRGetScreenInfo (gdi_display, root);
 163     size = pXRRConfigCurrentConfiguration (sc, &rot);
 164     rate = pXRRConfigCurrentRate (sc);
 165     pXRRFreeScreenConfigInfo(sc);
 166     wine_tsx11_unlock();
 167     for (i = 0; i < real_xrandr_modes_count; i++)
 168     {
 169         if ( (dd_modes[i].dwWidth      == real_xrandr_sizes[size].width ) &&
 170              (dd_modes[i].dwHeight     == real_xrandr_sizes[size].height) &&
 171              (dd_modes[i].wRefreshRate == rate                          ) )
 172           {
 173               res = i;
 174               break;
 175           }
 176     }
 177     if (res == -1)
 178     {
 179         ERR("In unknown mode, returning default\n");
 180         res = 0;
 181     }
 182     return res;
 183 }
 184
 185 static LONG 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 %d to %d\n", dwBpp, dd_modes[mode].dwBPP);
 205     }
 206     mode = mode%real_xrandr_modes_count;
 207
 208     TRACE("Changing Resolution to %dx%d @%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 %dx%d @%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                         break;
 231                     }
 232                 }
 233             }
 234             else
 235             {
 236                 TRACE("Resizing X display to %dx%d <default Hz>\n",
 237                       dd_modes[mode].dwWidth, dd_modes[mode].dwHeight);
 238                 stat = pXRRSetScreenConfig (gdi_display, sc, root, size, rot, CurrentTime);
 239             }
 240             break;
 241         }
 242     }
 243     pXRRFreeScreenConfigInfo(sc);
 244     wine_tsx11_unlock();
 245     if (stat == RRSetConfigSuccess)
 246     {
 247         X11DRV_handle_desktop_resize( dd_modes[mode].dwWidth, dd_modes[mode].dwHeight );
 248         return DISP_CHANGE_SUCCESSFUL;
 249     }
 250
 251     ERR("Resolution change not successful -- perhaps display has changed?\n");
 252     return DISP_CHANGE_FAILED;
 253 }
 254
 255 void X11DRV_XRandR_Init(void)
 256 {
 257     Bool ok;
 258     int nmodes = 0;
 259     unsigned int i;
 260
 261     if (xrandr_major) return; /* already initialized? */
 262     if (!usexrandr) return; /* disabled in config */
 263     if (root_window != DefaultRootWindow( gdi_display )) return;
 264     if (!load_xrandr()) return;  /* can't load the Xrandr library */
 265
 266     /* see if Xrandr is available */
 267     wine_tsx11_lock();
 268     ok = pXRRQueryExtension(gdi_display, &xrandr_event, &xrandr_error);
 269     if (ok)
 270     {
 271         X11DRV_expect_error(gdi_display, XRandRErrorHandler, NULL);
 272         ok = pXRRQueryVersion(gdi_display, &xrandr_major, &xrandr_minor);
 273         if (X11DRV_check_error()) ok = FALSE;
 274     }
 275     if (ok)
 276     {
 277         TRACE("Found XRandR - major: %d, minor: %d\n", xrandr_major, xrandr_minor);
 278         /* retrieve modes */
 279         real_xrandr_sizes = pXRRSizes(gdi_display, DefaultScreen(gdi_display), &real_xrandr_sizes_count);
 280         ok = (real_xrandr_sizes_count>0);
 281     }
 282     if (ok)
 283     {
 284         TRACE("XRandR: found %u resolutions sizes\n", real_xrandr_sizes_count);
 285         real_xrandr_rates = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(short *) * real_xrandr_sizes_count);
 286         real_xrandr_rates_count = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(int) * real_xrandr_sizes_count);
 287         for (i=0; i < real_xrandr_sizes_count; i++)
 288         {
 289             real_xrandr_rates[i] = pXRRRates (gdi_display, DefaultScreen(gdi_display), i, &(real_xrandr_rates_count[i]));
 290             TRACE("- at %u: %dx%d (%d rates):", i, real_xrandr_sizes[i].width, real_xrandr_sizes[i].height, real_xrandr_rates_count[i]);
 291             if (real_xrandr_rates_count[i])
 292             {
 293                 int j;
 294                 nmodes += real_xrandr_rates_count[i];
 295                 for (j = 0; j < real_xrandr_rates_count[i]; ++j) {
 296                   if (j > 0) TRACE(",");
 297                   TRACE("  %d", real_xrandr_rates[i][j]);
 298                 }
 299             }
 300             else
 301             {
 302                 nmodes++;
 303                 TRACE(" <default>");
 304             }
 305             TRACE(" Hz\n");
 306         }
 307     }
 308     wine_tsx11_unlock();
 309     if (!ok) return;
 310
 311     real_xrandr_modes_count = nmodes;
 312     TRACE("XRandR modes: count=%d\n", nmodes);
 313
 314     dd_modes = X11DRV_Settings_SetHandlers("XRandR",
 315                                            X11DRV_XRandR_GetCurrentMode,
 316                                            X11DRV_XRandR_SetCurrentMode,
 317                                            nmodes, 1);
 318     make_modes();
 319     X11DRV_Settings_AddDepthModes();
 320     dd_mode_count = X11DRV_Settings_GetModeCount();
 321     X11DRV_Settings_SetDefaultMode(0);
 322
 323     TRACE("Available DD modes: count=%d\n", dd_mode_count);
 324     TRACE("Enabling XRandR\n");
 325 }
 326
 327 void X11DRV_XRandR_Cleanup(void)
 328 {
 329     HeapFree(GetProcessHeap(), 0, real_xrandr_rates);
 330     real_xrandr_rates = NULL;
 331     HeapFree(GetProcessHeap(), 0, real_xrandr_rates_count);
 332     real_xrandr_rates_count = NULL;
 333 }
 334
 335 #endif /* HAVE_LIBXRANDR */