From 3562e78743202e43aec8727005182a2558117eca Mon Sep 17 00:00:00 2001 From: marha Date: Sun, 28 Jun 2009 22:07:26 +0000 Subject: Checked in the following released items: xkeyboard-config-1.4.tar.gz ttf-bitstream-vera-1.10.tar.gz font-alias-1.0.1.tar.gz font-sun-misc-1.0.0.tar.gz font-sun-misc-1.0.0.tar.gz font-sony-misc-1.0.0.tar.gz font-schumacher-misc-1.0.0.tar.gz font-mutt-misc-1.0.0.tar.gz font-misc-misc-1.0.0.tar.gz font-misc-meltho-1.0.0.tar.gz font-micro-misc-1.0.0.tar.gz font-jis-misc-1.0.0.tar.gz font-isas-misc-1.0.0.tar.gz font-dec-misc-1.0.0.tar.gz font-daewoo-misc-1.0.0.tar.gz font-cursor-misc-1.0.0.tar.gz font-arabic-misc-1.0.0.tar.gz font-winitzki-cyrillic-1.0.0.tar.gz font-misc-cyrillic-1.0.0.tar.gz font-cronyx-cyrillic-1.0.0.tar.gz font-screen-cyrillic-1.0.1.tar.gz font-xfree86-type1-1.0.1.tar.gz font-adobe-utopia-type1-1.0.1.tar.gz font-ibm-type1-1.0.0.tar.gz font-bitstream-type1-1.0.0.tar.gz font-bitstream-speedo-1.0.0.tar.gz font-bh-ttf-1.0.0.tar.gz font-bh-type1-1.0.0.tar.gz font-bitstream-100dpi-1.0.0.tar.gz font-bh-lucidatypewriter-100dpi-1.0.0.tar.gz font-bh-100dpi-1.0.0.tar.gz font-adobe-utopia-100dpi-1.0.1.tar.gz font-adobe-100dpi-1.0.0.tar.gz font-util-1.0.1.tar.gz font-bitstream-75dpi-1.0.0.tar.gz font-bh-lucidatypewriter-75dpi-1.0.0.tar.gz font-adobe-utopia-75dpi-1.0.1.tar.gz font-bh-75dpi-1.0.0.tar.gz bdftopcf-1.0.1.tar.gz font-adobe-75dpi-1.0.0.tar.gz mkfontscale-1.0.6.tar.gz openssl-0.9.8k.tar.gz bigreqsproto-1.0.2.tar.gz xtrans-1.2.2.tar.gz resourceproto-1.0.2.tar.gz inputproto-1.4.4.tar.gz compositeproto-0.4.tar.gz damageproto-1.1.0.tar.gz zlib-1.2.3.tar.gz xkbcomp-1.0.5.tar.gz freetype-2.3.9.tar.gz pthreads-w32-2-8-0-release.tar.gz pixman-0.12.0.tar.gz kbproto-1.0.3.tar.gz evieext-1.0.2.tar.gz fixesproto-4.0.tar.gz recordproto-1.13.2.tar.gz randrproto-1.2.2.tar.gz scrnsaverproto-1.1.0.tar.gz renderproto-0.9.3.tar.gz xcmiscproto-1.1.2.tar.gz fontsproto-2.0.2.tar.gz xextproto-7.0.3.tar.gz xproto-7.0.14.tar.gz libXdmcp-1.0.2.tar.gz libxkbfile-1.0.5.tar.gz libfontenc-1.0.4.tar.gz libXfont-1.3.4.tar.gz libX11-1.1.5.tar.gz libXau-1.0.4.tar.gz libxcb-1.1.tar.gz xorg-server-1.5.3.tar.gz --- libX11/src/xcms/LuvMxL.c | 218 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 218 insertions(+) create mode 100644 libX11/src/xcms/LuvMxL.c (limited to 'libX11/src/xcms/LuvMxL.c') diff --git a/libX11/src/xcms/LuvMxL.c b/libX11/src/xcms/LuvMxL.c new file mode 100644 index 000000000..f24c41419 --- /dev/null +++ b/libX11/src/xcms/LuvMxL.c @@ -0,0 +1,218 @@ +/* $Xorg: LuvMxL.c,v 1.3 2000/08/17 19:44:45 cpqbld Exp $ */ + +/* + * Code and supporting documentation (c) Copyright 1990 1991 Tektronix, Inc. + * All Rights Reserved + * + * This file is a component of an X Window System-specific implementation + * of XCMS based on the TekColor Color Management System. Permission is + * hereby granted to use, copy, modify, sell, and otherwise distribute this + * software and its documentation for any purpose and without fee, provided + * that this copyright, permission, and disclaimer notice is reproduced in + * all copies of this software and in supporting documentation. TekColor + * is a trademark of Tektronix, Inc. + * + * Tektronix makes no representation about the suitability of this software + * for any purpose. It is provided "as is" and with all faults. + * + * TEKTRONIX DISCLAIMS ALL WARRANTIES APPLICABLE TO THIS SOFTWARE, + * INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE. IN NO EVENT SHALL TEKTRONIX BE LIABLE FOR ANY + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER + * RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER IN AN ACTION OF + * CONTRACT, NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR THE PERFORMANCE OF THIS SOFTWARE. + * + * NAME + * CIELuvMxL.c + * + * DESCRIPTION + * Source for the XcmsCIELuvQueryMaxL() gamut boundary + * querying routine. + * + */ +/* $XFree86: xc/lib/X11/LuvMxL.c,v 1.3 2001/01/17 19:41:40 dawes Exp $ */ + +#ifdef HAVE_CONFIG_H +#include +#endif +#include "Xlibint.h" +#include "Xcmsint.h" +#include +#include "Cv.h" + +/* + * DEFINES + */ +#define MAXBISECTCOUNT 100 +#define EPS (XcmsFloat)0.001 +#define START_L_STAR (XcmsFloat)40.0 + + +/************************************************************************ + * * + * PUBLIC ROUTINES * + * * + ************************************************************************/ + +/* + * NAME + * XcmsCIELuvQueryMaxL - Compute max Lstar for a hue and chroma + * + * SYNOPSIS + */ +Status +XcmsCIELuvQueryMaxL( + XcmsCCC ccc, + XcmsFloat hue_angle, /* hue angle in degrees */ + XcmsFloat chroma, + XcmsColor *pColor_return) +/* + * DESCRIPTION + * Return the maximum Lstar for a specified hue_angle and chroma. + * + * ASSUMPTIONS + * This routine assumes that the white point associated with + * the color specification is the Screen White Point. The + * Screen White Point will also be associated with the + * returned color specification. + * + * RETURNS + * XcmsFailure - Failure + * XcmsSuccess - Succeeded with no modifications + * + */ +{ + XcmsCCCRec myCCC; + XcmsColor max_lc, tmp, prev; + XcmsFloat max_chroma, tmp_chroma; + XcmsFloat hue, nT, nChroma, lastChroma, prevChroma; + XcmsFloat rFactor; + XcmsRGBi rgb_saved; + int nCount, nMaxCount; + + /* + * Check Arguments + */ + if (ccc == NULL || pColor_return == NULL) { + return(XcmsFailure); + } + + /* setup the CCC to use for the conversions. */ + memcpy ((char *) &myCCC, (char *) ccc, sizeof(XcmsCCCRec)); + myCCC.clientWhitePt.format = XcmsUndefinedFormat; + myCCC.gamutCompProc = (XcmsCompressionProc) NULL; + + while (hue_angle < 0.0) { + hue_angle += 360.0; + } + while (hue_angle >= 360.0) { + hue_angle -= 360.0; + } + + hue = radians(hue_angle); + tmp.spec.CIELuv.L_star = START_L_STAR; + tmp.spec.CIELuv.u_star = XCMS_CIEUSTAROFHUE(hue, chroma); + tmp.spec.CIELuv.v_star = XCMS_CIEVSTAROFHUE(hue, chroma); + tmp.pixel = pColor_return->pixel; + tmp.format = XcmsCIELuvFormat; + + /* Step 1: Obtain the maximum L_star and chroma for this hue. */ + if (_XcmsCIELuvQueryMaxLCRGB(&myCCC, hue, &max_lc, &rgb_saved) + == XcmsFailure) { + return(XcmsFailure); + } + + max_chroma = XCMS_CIELUV_PMETRIC_CHROMA(max_lc.spec.CIELuv.u_star, + max_lc.spec.CIELuv.v_star); + + if (max_chroma <= chroma) { + /* + * If the chroma is greater than the chroma for the + * maximum L/chroma point then the L_star is the + * the L_star for the maximum L_star/chroma point. + * This is an error but I return the best approximation I can. + * Thus the inconsistency. + */ + memcpy ((char *) pColor_return, (char *) &max_lc, sizeof (XcmsColor)); + return(XcmsSuccess); + } + + /* + * If the chroma is equal to the chroma for the + * maximum L_star/chroma point then the L_star is the + * the L_star for the maximum L* and chroma point. + */ + /* if (max_chroma == chroma) { + * memcpy ((char *) pColor_return, (char *) &max_lc, sizeof (XcmsColor)); + * return(XcmsSuccess); + * } + */ + + /* must do a bisection here to compute the maximum L* */ + /* save the structure input so that any elements that */ + /* are not touched are recopied later in the routine. */ + nChroma = chroma; + tmp_chroma = max_chroma; + lastChroma = -1.0; + nMaxCount = MAXBISECTCOUNT; + rFactor = 1.0; + + for (nCount = 0; nCount < nMaxCount; nCount++) { + prevChroma = lastChroma; + lastChroma = tmp_chroma; + nT = (1.0 - (nChroma / max_chroma)) * rFactor; + memcpy ((char *)&prev, (char *)&tmp, sizeof(XcmsColor)); + tmp.spec.RGBi.red = rgb_saved.red * (1.0 - nT) + nT; + tmp.spec.RGBi.green = rgb_saved.green * (1.0 - nT) + nT; + tmp.spec.RGBi.blue = rgb_saved.blue * (1.0 - nT) + nT; + tmp.format = XcmsRGBiFormat; + + /* convert from RGB to CIELuv */ + if (_XcmsConvertColorsWithWhitePt(&myCCC, &tmp, + ScreenWhitePointOfCCC(&myCCC), 1, XcmsCIELuvFormat, + (Bool *) NULL) == XcmsFailure) { + return(XcmsFailure); + } + + /* Now check the return against what is expected */ + tmp_chroma = XCMS_CIELUV_PMETRIC_CHROMA(tmp.spec.CIELuv.u_star, + tmp.spec.CIELuv.v_star); + if (tmp_chroma <= chroma + EPS && tmp_chroma >= chroma - EPS) { + /* Found It! */ + memcpy ((char *) pColor_return, (char *) &tmp, sizeof (XcmsColor)); + return(XcmsSuccess); + } + nChroma += chroma - tmp_chroma; + if (nChroma > max_chroma) { + nChroma = max_chroma; + rFactor *= 0.5; /* selective relaxation employed */ + } else if (nChroma < 0.0) { + if (XCMS_FABS(lastChroma - chroma) < + XCMS_FABS(tmp_chroma - chroma)) { + memcpy ((char *)pColor_return, (char *)&prev, + sizeof(XcmsColor)); + } else { + memcpy ((char *)pColor_return, (char *)&tmp, + sizeof(XcmsColor)); + } + return(XcmsSuccess); + } else if (tmp_chroma <= prevChroma + EPS && + tmp_chroma >= prevChroma - EPS) { + rFactor *= 0.5; /* selective relaxation employed */ + } + } + + if (nCount >= nMaxCount) { + if (XCMS_FABS(lastChroma - chroma) < + XCMS_FABS(tmp_chroma - chroma)) { + memcpy ((char *)pColor_return, (char *)&prev, + sizeof(XcmsColor)); + } else { + memcpy ((char *)pColor_return, (char *)&tmp, + sizeof(XcmsColor)); + } + } + memcpy ((char *) pColor_return, (char *) &tmp, sizeof (XcmsColor)); + return(XcmsSuccess); +} -- cgit v1.2.3