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wine-wine/dlls/winex11.drv/xvidmode.c

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/*
* DirectDraw XVidMode interface
*
* Copyright 2001 TransGaming Technologies, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <string.h>
#include <stdio.h>
#include <math.h>
#include "x11drv.h"
#ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H
#include <X11/extensions/xf86vmode.h>
#endif
#ifdef HAVE_X11_EXTENSIONS_XF86VMPROTO_H
#include <X11/extensions/xf86vmproto.h>
#endif
#include "windef.h"
#include "wingdi.h"
#include "wine/debug.h"
#include "wine/heap.h"
WINE_DEFAULT_DEBUG_CHANNEL(xvidmode);
#ifdef SONAME_LIBXXF86VM
extern BOOL usexvidmode;
static int xf86vm_event, xf86vm_error, xf86vm_major, xf86vm_minor;
#ifdef X_XF86VidModeSetGammaRamp
static int xf86vm_gammaramp_size;
static BOOL xf86vm_use_gammaramp;
#endif /* X_XF86VidModeSetGammaRamp */
static struct x11drv_mode_info *dd_modes;
static unsigned int dd_mode_count;
static XF86VidModeModeInfo** real_xf86vm_modes;
static unsigned int real_xf86vm_mode_count;
#define MAKE_FUNCPTR(f) static typeof(f) * p##f;
MAKE_FUNCPTR(XF86VidModeGetAllModeLines)
MAKE_FUNCPTR(XF86VidModeGetModeLine)
MAKE_FUNCPTR(XF86VidModeLockModeSwitch)
MAKE_FUNCPTR(XF86VidModeQueryExtension)
MAKE_FUNCPTR(XF86VidModeQueryVersion)
MAKE_FUNCPTR(XF86VidModeSetViewPort)
MAKE_FUNCPTR(XF86VidModeSwitchToMode)
#ifdef X_XF86VidModeSetGamma
MAKE_FUNCPTR(XF86VidModeGetGamma)
MAKE_FUNCPTR(XF86VidModeSetGamma)
#endif
#ifdef X_XF86VidModeSetGammaRamp
MAKE_FUNCPTR(XF86VidModeGetGammaRamp)
MAKE_FUNCPTR(XF86VidModeGetGammaRampSize)
MAKE_FUNCPTR(XF86VidModeSetGammaRamp)
#endif
#undef MAKE_FUNCPTR
static void convert_modeinfo( const XF86VidModeModeInfo *mode)
{
int rate;
if (mode->htotal!=0 && mode->vtotal!=0)
rate = mode->dotclock * 1000 / (mode->htotal * mode->vtotal);
else
rate = 0;
X11DRV_Settings_AddOneMode(mode->hdisplay, mode->vdisplay, 0, rate);
}
static void convert_modeline(int dotclock, const XF86VidModeModeLine *mode,
struct x11drv_mode_info *info, unsigned int bpp)
{
info->width = mode->hdisplay;
info->height = mode->vdisplay;
if (mode->htotal!=0 && mode->vtotal!=0)
info->refresh_rate = dotclock * 1000 / (mode->htotal * mode->vtotal);
else
info->refresh_rate = 0;
TRACE(" width=%d, height=%d, refresh=%d\n",
info->width, info->height, info->refresh_rate);
info->bpp = bpp;
}
static int XVidModeErrorHandler(Display *dpy, XErrorEvent *event, void *arg)
{
return 1;
}
static int X11DRV_XF86VM_GetCurrentMode(void)
{
XF86VidModeModeLine line;
int dotclock;
unsigned int i;
struct x11drv_mode_info cmode;
DWORD dwBpp = screen_bpp;
TRACE("Querying XVidMode current mode\n");
pXF86VidModeGetModeLine(gdi_display, DefaultScreen(gdi_display), &dotclock, &line);
convert_modeline(dotclock, &line, &cmode, dwBpp);
for (i=0; i<dd_mode_count; i++)
if (memcmp(&dd_modes[i], &cmode, sizeof(cmode)) == 0) {
TRACE("mode=%d\n", i);
return i;
}
ERR("In unknown mode, returning default\n");
return 0;
}
static LONG X11DRV_XF86VM_SetCurrentMode(int mode)
{
DWORD dwBpp = screen_bpp;
/* only set modes from the original color depth */
if (dwBpp != dd_modes[mode].bpp)
{
FIXME("Cannot change screen BPP from %d to %d\n", dwBpp, dd_modes[mode].bpp);
}
mode = mode % real_xf86vm_mode_count;
TRACE("Resizing X display to %dx%d\n",
real_xf86vm_modes[mode]->hdisplay, real_xf86vm_modes[mode]->vdisplay);
pXF86VidModeSwitchToMode(gdi_display, DefaultScreen(gdi_display), real_xf86vm_modes[mode]);
#if 0 /* it is said that SetViewPort causes problems with some X servers */
pXF86VidModeSetViewPort(gdi_display, DefaultScreen(gdi_display), 0, 0);
#else
XWarpPointer(gdi_display, None, DefaultRootWindow(gdi_display), 0, 0, 0, 0, 0, 0);
#endif
XSync(gdi_display, False);
X11DRV_DisplayDevices_Update( TRUE );
return DISP_CHANGE_SUCCESSFUL;
}
void X11DRV_XF86VM_Init(void)
{
void *xvidmode_handle;
Bool ok;
int nmodes;
unsigned int i;
if (xf86vm_major) return; /* already initialized? */
xvidmode_handle = dlopen(SONAME_LIBXXF86VM, RTLD_NOW);
if (!xvidmode_handle)
{
TRACE("Unable to open %s, XVidMode disabled\n", SONAME_LIBXXF86VM);
usexvidmode = FALSE;
return;
}
#define LOAD_FUNCPTR(f) \
if((p##f = dlsym(xvidmode_handle, #f)) == NULL) goto sym_not_found
LOAD_FUNCPTR(XF86VidModeGetAllModeLines);
LOAD_FUNCPTR(XF86VidModeGetModeLine);
LOAD_FUNCPTR(XF86VidModeLockModeSwitch);
LOAD_FUNCPTR(XF86VidModeQueryExtension);
LOAD_FUNCPTR(XF86VidModeQueryVersion);
LOAD_FUNCPTR(XF86VidModeSetViewPort);
LOAD_FUNCPTR(XF86VidModeSwitchToMode);
#ifdef X_XF86VidModeSetGamma
LOAD_FUNCPTR(XF86VidModeGetGamma);
LOAD_FUNCPTR(XF86VidModeSetGamma);
#endif
#ifdef X_XF86VidModeSetGammaRamp
LOAD_FUNCPTR(XF86VidModeGetGammaRamp);
LOAD_FUNCPTR(XF86VidModeGetGammaRampSize);
LOAD_FUNCPTR(XF86VidModeSetGammaRamp);
#endif
#undef LOAD_FUNCPTR
/* see if XVidMode is available */
if (!pXF86VidModeQueryExtension(gdi_display, &xf86vm_event, &xf86vm_error)) return;
X11DRV_expect_error(gdi_display, XVidModeErrorHandler, NULL);
ok = pXF86VidModeQueryVersion(gdi_display, &xf86vm_major, &xf86vm_minor);
if (X11DRV_check_error() || !ok) return;
#ifdef X_XF86VidModeSetGammaRamp
if (xf86vm_major > 2 || (xf86vm_major == 2 && xf86vm_minor >= 1))
{
X11DRV_expect_error(gdi_display, XVidModeErrorHandler, NULL);
pXF86VidModeGetGammaRampSize(gdi_display, DefaultScreen(gdi_display),
&xf86vm_gammaramp_size);
if (X11DRV_check_error()) xf86vm_gammaramp_size = 0;
TRACE("Gamma ramp size %d.\n", xf86vm_gammaramp_size);
if (xf86vm_gammaramp_size >= GAMMA_RAMP_SIZE)
xf86vm_use_gammaramp = TRUE;
}
#endif /* X_XF86VidModeSetGammaRamp */
/* retrieve modes */
if (usexvidmode && !is_virtual_desktop())
{
X11DRV_expect_error(gdi_display, XVidModeErrorHandler, NULL);
ok = pXF86VidModeGetAllModeLines(gdi_display, DefaultScreen(gdi_display), &nmodes, &real_xf86vm_modes);
if (X11DRV_check_error() || !ok) return;
}
else return; /* In desktop mode, do not switch resolution... But still use the Gamma ramp stuff */
TRACE("XVidMode modes: count=%d\n", nmodes);
real_xf86vm_mode_count = nmodes;
dd_modes = X11DRV_Settings_SetHandlers("XF86VidMode",
X11DRV_XF86VM_GetCurrentMode,
X11DRV_XF86VM_SetCurrentMode,
nmodes, 1);
/* convert modes to x11drv_mode_info format */
for (i=0; i<real_xf86vm_mode_count; i++)
{
convert_modeinfo(real_xf86vm_modes[i]);
}
/* add modes for different color depths */
X11DRV_Settings_AddDepthModes();
dd_mode_count = X11DRV_Settings_GetModeCount();
TRACE("Available DD modes: count=%d\n", dd_mode_count);
TRACE("Enabling XVidMode\n");
return;
sym_not_found:
TRACE("Unable to load function pointers from %s, XVidMode disabled\n", SONAME_LIBXXF86VM);
dlclose(xvidmode_handle);
xvidmode_handle = NULL;
usexvidmode = FALSE;
}
/***** GAMMA CONTROL *****/
/* (only available in XF86VidMode 2.x) */
#ifdef X_XF86VidModeSetGamma
static void GenerateRampFromGamma(WORD ramp[GAMMA_RAMP_SIZE], float gamma)
{
float r_gamma = 1/gamma;
unsigned i;
TRACE("gamma is %f\n", r_gamma);
for (i=0; i<GAMMA_RAMP_SIZE; i++)
ramp[i] = pow(i/255.0, r_gamma) * 65535.0;
}
static BOOL ComputeGammaFromRamp(WORD ramp[GAMMA_RAMP_SIZE], float *gamma)
{
float r_x, r_y, r_lx, r_ly, r_d, r_v, r_e, g_avg, g_min, g_max;
unsigned i, f, l, g_n, c;
f = ramp[0];
l = ramp[255];
if (f >= l) {
ERR("inverted or flat gamma ramp (%d->%d), rejected\n", f, l);
return FALSE;
}
r_d = l - f;
g_min = g_max = g_avg = 0.0;
/* check gamma ramp entries to estimate the gamma */
TRACE("analyzing gamma ramp (%d->%d)\n", f, l);
for (i=1, g_n=0; i<255; i++) {
if (ramp[i] < f || ramp[i] > l) {
ERR("strange gamma ramp ([%d]=%d for %d->%d), rejected\n", i, ramp[i], f, l);
return FALSE;
}
c = ramp[i] - f;
if (!c) continue; /* avoid log(0) */
/* normalize entry values into 0..1 range */
r_x = i/255.0; r_y = c / r_d;
/* compute logarithms of values */
r_lx = log(r_x); r_ly = log(r_y);
/* compute gamma for this entry */
r_v = r_ly / r_lx;
/* compute differential (error estimate) for this entry */
/* some games use table-based logarithms that magnifies the error by 128 */
r_e = -r_lx * 128 / (c * r_lx * r_lx);
/* compute min & max while compensating for estimated error */
if (!g_n || g_min > (r_v + r_e)) g_min = r_v + r_e;
if (!g_n || g_max < (r_v - r_e)) g_max = r_v - r_e;
/* add to average */
g_avg += r_v;
g_n++;
/* TRACE("[%d]=%d, gamma=%f, error=%f\n", i, ramp[i], r_v, r_e); */
}
if (!g_n) {
ERR("no gamma data, shouldn't happen\n");
return FALSE;
}
g_avg /= g_n;
TRACE("low bias is %d, high is %d, gamma is %5.3f\n", f, 65535-l, g_avg);
/* the bias could be because the app wanted something like a "red shift"
* like when you're hit in Quake, but XVidMode doesn't support it,
* so we have to reject a significant bias */
if (f && f > (pow(1/255.0, g_avg) * 65536.0)) {
ERR("low-biased gamma ramp (%d), rejected\n", f);
return FALSE;
}
/* check that the gamma is reasonably uniform across the ramp */
if (g_max - g_min > 12.8) {
ERR("ramp not uniform (max=%f, min=%f, avg=%f), rejected\n", g_max, g_min, g_avg);
return FALSE;
}
/* check that the gamma is not too bright */
if (g_avg < 0.2) {
ERR("too bright gamma ( %5.3f), rejected\n", g_avg);
return FALSE;
}
/* ok, now we're pretty sure we can set the desired gamma ramp,
* so go for it */
*gamma = 1/g_avg;
return TRUE;
}
#endif /* X_XF86VidModeSetGamma */
/* Hmm... should gamma control be available in desktop mode or not?
* I'll assume that it should */
#ifdef X_XF86VidModeSetGammaRamp
static void interpolate_gamma_ramp(WORD *dst_r, WORD *dst_g, WORD *dst_b, unsigned int dst_size,
const WORD *src_r, const WORD *src_g, const WORD *src_b, unsigned int src_size)
{
double position, distance;
unsigned int dst_i, src_i;
for (dst_i = 0; dst_i < dst_size; ++dst_i)
{
position = dst_i * (src_size - 1) / (double)(dst_size - 1);
src_i = position;
if (src_i + 1 < src_size)
{
distance = position - src_i;
dst_r[dst_i] = (1.0 - distance) * src_r[src_i] + distance * src_r[src_i + 1] + 0.5;
dst_g[dst_i] = (1.0 - distance) * src_g[src_i] + distance * src_g[src_i + 1] + 0.5;
dst_b[dst_i] = (1.0 - distance) * src_b[src_i] + distance * src_b[src_i + 1] + 0.5;
}
else
{
dst_r[dst_i] = src_r[src_i];
dst_g[dst_i] = src_g[src_i];
dst_b[dst_i] = src_b[src_i];
}
}
}
static BOOL xf86vm_get_gamma_ramp(struct x11drv_gamma_ramp *ramp)
{
WORD *red, *green, *blue;
BOOL ret;
if (xf86vm_gammaramp_size == GAMMA_RAMP_SIZE)
{
red = ramp->red;
green = ramp->green;
blue = ramp->blue;
}
else
{
if (!(red = heap_calloc(xf86vm_gammaramp_size, 3 * sizeof(*red))))
return FALSE;
green = red + xf86vm_gammaramp_size;
blue = green + xf86vm_gammaramp_size;
}
ret = pXF86VidModeGetGammaRamp(gdi_display, DefaultScreen(gdi_display),
xf86vm_gammaramp_size, red, green, blue);
if (ret && red != ramp->red)
interpolate_gamma_ramp(ramp->red, ramp->green, ramp->blue, GAMMA_RAMP_SIZE,
red, green, blue, xf86vm_gammaramp_size);
if (red != ramp->red)
heap_free(red);
return ret;
}
static BOOL xf86vm_set_gamma_ramp(struct x11drv_gamma_ramp *ramp)
{
WORD *red, *green, *blue;
BOOL ret;
if (xf86vm_gammaramp_size == GAMMA_RAMP_SIZE)
{
red = ramp->red;
green = ramp->green;
blue = ramp->blue;
}
else
{
if (!(red = heap_calloc(xf86vm_gammaramp_size, 3 * sizeof(*red))))
return FALSE;
green = red + xf86vm_gammaramp_size;
blue = green + xf86vm_gammaramp_size;
interpolate_gamma_ramp(red, green, blue, xf86vm_gammaramp_size,
ramp->red, ramp->green, ramp->blue, GAMMA_RAMP_SIZE);
}
X11DRV_expect_error(gdi_display, XVidModeErrorHandler, NULL);
ret = pXF86VidModeSetGammaRamp(gdi_display, DefaultScreen(gdi_display),
xf86vm_gammaramp_size, red, green, blue);
if (ret) XSync( gdi_display, FALSE );
if (X11DRV_check_error()) ret = FALSE;
if (red != ramp->red)
heap_free(red);
return ret;
}
#endif
static BOOL X11DRV_XF86VM_GetGammaRamp(struct x11drv_gamma_ramp *ramp)
{
#ifdef X_XF86VidModeSetGamma
XF86VidModeGamma gamma;
if (xf86vm_major < 2) return FALSE; /* no gamma control */
#ifdef X_XF86VidModeSetGammaRamp
if (xf86vm_use_gammaramp)
return xf86vm_get_gamma_ramp(ramp);
#endif
if (pXF86VidModeGetGamma(gdi_display, DefaultScreen(gdi_display), &gamma))
{
GenerateRampFromGamma(ramp->red, gamma.red);
GenerateRampFromGamma(ramp->green, gamma.green);
GenerateRampFromGamma(ramp->blue, gamma.blue);
return TRUE;
}
#endif /* X_XF86VidModeSetGamma */
return FALSE;
}
static BOOL X11DRV_XF86VM_SetGammaRamp(struct x11drv_gamma_ramp *ramp)
{
#ifdef X_XF86VidModeSetGamma
XF86VidModeGamma gamma;
if (xf86vm_major < 2 || !usexvidmode) return FALSE; /* no gamma control */
if (!ComputeGammaFromRamp(ramp->red, &gamma.red) || /* ramp validation */
!ComputeGammaFromRamp(ramp->green, &gamma.green) ||
!ComputeGammaFromRamp(ramp->blue, &gamma.blue)) return FALSE;
#ifdef X_XF86VidModeSetGammaRamp
if (xf86vm_use_gammaramp)
return xf86vm_set_gamma_ramp(ramp);
#endif
return pXF86VidModeSetGamma(gdi_display, DefaultScreen(gdi_display), &gamma);
#else
return FALSE;
#endif /* X_XF86VidModeSetGamma */
}
#else /* SONAME_LIBXXF86VM */
void X11DRV_XF86VM_Init(void)
{
TRACE("XVidMode support not compiled in.\n");
}
#endif /* SONAME_LIBXXF86VM */
/***********************************************************************
* GetDeviceGammaRamp (X11DRV.@)
*
* FIXME: should move to somewhere appropriate, but probably not before
* the stuff in graphics/x11drv/ has been moved to dlls/x11drv, so that
* they can include xvidmode.h directly
*/
BOOL CDECL X11DRV_GetDeviceGammaRamp(PHYSDEV dev, LPVOID ramp)
{
#ifdef SONAME_LIBXXF86VM
return X11DRV_XF86VM_GetGammaRamp(ramp);
#else
return FALSE;
#endif
}
/***********************************************************************
* SetDeviceGammaRamp (X11DRV.@)
*
* FIXME: should move to somewhere appropriate, but probably not before
* the stuff in graphics/x11drv/ has been moved to dlls/x11drv, so that
* they can include xvidmode.h directly
*/
BOOL CDECL X11DRV_SetDeviceGammaRamp(PHYSDEV dev, LPVOID ramp)
{
#ifdef SONAME_LIBXXF86VM
return X11DRV_XF86VM_SetGammaRamp(ramp);
#else
return FALSE;
#endif
}
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