dlls/x11drv/xvidmode.c

   1 /*
   2  * DirectDraw XVidMode interface
   3  *
   4  * Copyright 2001 TransGaming Technologies, Inc.
   5  */
   6
   7 #include "config.h"
   8
   9 /* FIXME: XVidMode also includes gamma functions,
  10  * we could perhaps use it to implement Get/SetGammaRamp */
  11
  12 /* FIXME: ChangeDisplaySettings ought to be able to use this */
  13
  14 #ifdef HAVE_LIBXXF86VM
  15
  16 #include "ts_xlib.h"
  17 #include "ts_xf86vmode.h"
  18 #include "x11drv.h"
  19
  20 #include "windef.h"
  21 #include "wingdi.h"
  22 #include "ddrawi.h"
  23 #include "debugtools.h"
  24
  25 DEFAULT_DEBUG_CHANNEL(x11drv);
  26
  27 LPDDHALMODEINFO xf86vm_modes;
  28 unsigned xf86vm_mode_count;
  29 XF86VidModeModeInfo** modes;
  30
  31 #define CONVERT_MODE(dotclock) \
  32   info->dwWidth      = mode->hdisplay; \
  33   info->dwHeight     = mode->vdisplay; \
  34   info->wRefreshRate = dotclock * 1000 / (mode->htotal * mode->vtotal); \
  35   TRACE(" width=%ld, height=%ld, refresh=%d\n", \
  36         info->dwWidth, info->dwHeight, info->wRefreshRate); \
  37   /* XVidMode cannot change display depths... */ \
  38   /* let's not bother with filling out these then... */ \
  39   info->lPitch         = 0; \
  40   info->dwBPP          = 0; \
  41   info->wFlags         = 0; \
  42   info->dwRBitMask     = 0; \
  43   info->dwGBitMask     = 0; \
  44   info->dwBBitMask     = 0; \
  45   info->dwAlphaBitMask = 0;
  46
  47 static void convert_modeinfo(XF86VidModeModeInfo *mode, LPDDHALMODEINFO info)
  48 {
  49   CONVERT_MODE(mode->dotclock)
  50 }
  51
  52 static void convert_modeline(int dotclock, XF86VidModeModeLine *mode, LPDDHALMODEINFO info)
  53 {
  54   CONVERT_MODE(dotclock)
  55 }
  56
  57 void X11DRV_XF86VM_Init(void)
  58 {
  59   int nmodes, major, minor, i;
  60
  61   if (xf86vm_modes) return; /* already initialized? */
  62
  63   /* if in desktop mode, don't use XVidMode */
  64   if (X11DRV_GetXRootWindow() != DefaultRootWindow(display)) return;
  65
  66   /* see if XVidMode is available */
  67   if (!TSXF86VidModeQueryVersion(display, &major, &minor)) return;
  68
  69   /* retrieve modes */
  70   if (!TSXF86VidModeGetAllModeLines(display, DefaultScreen(display), &nmodes,
  71                                     &modes))
  72     return;
  73
  74   TRACE("XVidMode modes: count=%d\n", nmodes);
  75
  76   xf86vm_mode_count = nmodes;
  77   xf86vm_modes = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DDHALMODEINFO) * nmodes);
  78
  79   /* convert modes to DDHALMODEINFO format */
  80   for (i=0; i<nmodes; i++)
  81     convert_modeinfo(modes[i], &xf86vm_modes[i]);
  82
  83   TRACE("Enabling XVidMode\n");
  84 }
  85
  86 void X11DRV_XF86VM_Cleanup(void)
  87 {
  88   TSXFree(modes);
  89 }
  90
  91 int X11DRV_XF86VM_GetCurrentMode(void)
  92 {
  93   XF86VidModeModeLine line;
  94   int dotclock, i;
  95   DDHALMODEINFO cmode;
  96
  97   TRACE("Querying XVidMode current mode\n");
  98   TSXF86VidModeGetModeLine(display, DefaultScreen(display), &dotclock, &line);
  99   convert_modeline(dotclock, &line, &cmode);
 100   for (i=0; i<xf86vm_mode_count; i++)
 101     if (memcmp(&xf86vm_modes[i], &cmode, sizeof(cmode)) == 0) {
 102       TRACE("mode=%d\n", i);
 103       return i;
 104     }
 105   ERR("unknown mode, shouldn't happen\n");
 106   return 0; /* return first mode */
 107 }
 108
 109 void X11DRV_XF86VM_SetCurrentMode(int mode)
 110 {
 111   TSXF86VidModeSwitchToMode(display, DefaultScreen(display), modes[mode]);
 112   TSXF86VidModeSetViewPort(display, DefaultScreen(display), 0, 0);
 113   TSXSync(display, False);
 114 }
 115
 116 void X11DRV_XF86VM_SetExclusiveMode(int lock)
 117 {
 118   TSXF86VidModeLockModeSwitch(display, DefaultScreen(display), lock);
 119 }
 120
 121 #endif /* HAVE_LIBXXF86VM */