From 990bc3f015a4f8fce2eb918375defcd44980a845 Mon Sep 17 00:00:00 2001 From: marha Date: Fri, 8 Jun 2012 09:33:13 +0200 Subject: Used synchronise script to update files --- libX11/src/xcms/uvY.c | 846 +++++++++++++++++++++++++------------------------- 1 file changed, 423 insertions(+), 423 deletions(-) (limited to 'libX11/src/xcms/uvY.c') diff --git a/libX11/src/xcms/uvY.c b/libX11/src/xcms/uvY.c index 5344fb17c..a4abc66cd 100644 --- a/libX11/src/xcms/uvY.c +++ b/libX11/src/xcms/uvY.c @@ -1,423 +1,423 @@ - -/* - * 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 - * CIEuvy.c - * - * DESCRIPTION - * This file contains routines that support the CIE u'v'Y - * color space to include conversions to and from the CIE - * XYZ space. - * - * DOCUMENTATION - * "TekColor Color Management System, System Implementor's Manual" - */ - -#ifdef HAVE_CONFIG_H -#include -#endif -#include -#include "Xlibint.h" -#include "Xcmsint.h" -#include "Cv.h" - -#include - -/* - * FORWARD DECLARATIONS - */ -static int CIEuvY_ParseString(register char *spec, XcmsColor *pColor); - -/* - * DEFINES - * Internal definitions that need NOT be exported to any package - * or program using this package. - */ -#ifdef DBL_EPSILON -# define XMY_DBL_EPSILON DBL_EPSILON -#else -# define XMY_DBL_EPSILON 0.00001 -#endif - - -/* - * LOCAL VARIABLES - */ - - /* - * NULL terminated list of functions applied to get from CIEuvY to CIEXYZ - */ -static XcmsConversionProc Fl_CIEuvY_to_CIEXYZ[] = { - XcmsCIEuvYToCIEXYZ, - NULL -}; - - /* - * NULL terminated list of functions applied to get from CIEXYZ to CIEuvY - */ -static XcmsConversionProc Fl_CIEXYZ_to_CIEuvY[] = { - XcmsCIEXYZToCIEuvY, - NULL -}; - - -/* - * GLOBALS - */ - - /* - * CIE uvY Color Space - */ -XcmsColorSpace XcmsCIEuvYColorSpace = - { - _XcmsCIEuvY_prefix, /* prefix */ - XcmsCIEuvYFormat, /* id */ - CIEuvY_ParseString, /* parseString */ - Fl_CIEuvY_to_CIEXYZ, /* to_CIEXYZ */ - Fl_CIEXYZ_to_CIEuvY, /* from_CIEXYZ */ - 1 - }; - - - -/************************************************************************ - * * - * PRIVATE ROUTINES * - * * - ************************************************************************/ - -/* - * NAME - * CIEuvY_ParseString - * - * SYNOPSIS - */ -static int -CIEuvY_ParseString( - register char *spec, - XcmsColor *pColor) -/* - * DESCRIPTION - * This routines takes a string and attempts to convert - * it into a XcmsColor structure with XcmsCIEuvYFormat. - * The assumed CIEuvY string syntax is: - * CIEuvY:// - * Where u, v, and Y are in string input format for floats - * consisting of: - * a. an optional sign - * b. a string of numbers possibly containing a decimal point, - * c. an optional exponent field containing an 'E' or 'e' - * followed by a possibly signed integer string. - * - * RETURNS - * 0 if failed, non-zero otherwise. - */ -{ - int n; - char *pchar; - - if ((pchar = strchr(spec, ':')) == NULL) { - return(XcmsFailure); - } - n = (int)(pchar - spec); - - /* - * Check for proper prefix. - */ - if (strncmp(spec, _XcmsCIEuvY_prefix, n) != 0) { - return(XcmsFailure); - } - - /* - * Attempt to parse the value portion. - */ - if (sscanf(spec + n + 1, "%lf/%lf/%lf", - &pColor->spec.CIEuvY.u_prime, - &pColor->spec.CIEuvY.v_prime, - &pColor->spec.CIEuvY.Y) != 3) { - char *s; /* Maybe failed due to locale */ - int f; - if ((s = strdup(spec))) { - for (f = 0; s[f]; ++f) - if (s[f] == '.') - s[f] = ','; - else if (s[f] == ',') - s[f] = '.'; - if (sscanf(s + n + 1, "%lf/%lf/%lf", - &pColor->spec.CIEuvY.u_prime, - &pColor->spec.CIEuvY.v_prime, - &pColor->spec.CIEuvY.Y) != 3) { - free(s); - return(XcmsFailure); - } - free(s); - } else - return(XcmsFailure); - } - pColor->format = XcmsCIEuvYFormat; - pColor->pixel = 0; - return(_XcmsCIEuvY_ValidSpec(pColor)); -} - - -/************************************************************************ - * * - * PUBLIC ROUTINES * - * * - ************************************************************************/ - -/* - * NAME - * XcmsCIEuvY_ValidSpec - * - * SYNOPSIS - */ -Status -_XcmsCIEuvY_ValidSpec( - XcmsColor *pColor) -/* - * DESCRIPTION - * Checks if color specification valid for CIE u'v'Y. - * - * RETURNS - * XcmsFailure if invalid, - * XcmsSuccess if valid. - * - */ -{ - if (pColor->format != XcmsCIEuvYFormat - || - (pColor->spec.CIEuvY.Y < 0.0 - XMY_DBL_EPSILON) - || - (pColor->spec.CIEuvY.Y > 1.0 + XMY_DBL_EPSILON)) { - return(XcmsFailure); - } - return(XcmsSuccess); -} - - -/* - * NAME - * XcmsCIEuvYToCIEXYZ - convert CIEuvY to CIEXYZ - * - * SYNOPSIS - */ -Status -XcmsCIEuvYToCIEXYZ( - XcmsCCC ccc, - XcmsColor *puvY_WhitePt, - XcmsColor *pColors_in_out, - unsigned int nColors) -/* - * DESCRIPTION - * Converts color specifications in an array of XcmsColor - * structures from CIEuvY format to CIEXYZ format. - * - * RETURNS - * XcmsFailure if failed, - * XcmsSuccess if succeeded. - * - */ -{ - XcmsCIEXYZ XYZ_return; - XcmsColor whitePt; - int i; - XcmsColor *pColor = pColors_in_out; - XcmsFloat div, x, y, z, Y; - - /* - * Check arguments - * Postpone checking puvY_WhitePt until it is actually needed - * otherwise converting between XYZ and uvY will fail. - */ - if (pColors_in_out == NULL) { - return(XcmsFailure); - } - - - /* - * Now convert each XcmsColor structure to CIEXYZ form - */ - for (i = 0; i < nColors; i++, pColor++) { - - /* Make sure original format is CIEuvY */ - if (!_XcmsCIEuvY_ValidSpec(pColor)) { - return(XcmsFailure); - } - - /* - * Convert to CIEXYZ - */ - - Y = pColor->spec.CIEuvY.Y; - - /* Convert color u'v' to xyz space */ - div = (6.0 * pColor->spec.CIEuvY.u_prime) - (16.0 * pColor->spec.CIEuvY.v_prime) + 12.0; - if (div == 0.0) { - /* use white point since div == 0 */ - if (puvY_WhitePt == NULL ) { - return(XcmsFailure); - } - /* - * Make sure white point is in CIEuvY form - */ - if (puvY_WhitePt->format != XcmsCIEuvYFormat) { - /* Make copy of the white point because we're going to modify it */ - memcpy((char *)&whitePt, (char *)puvY_WhitePt, sizeof(XcmsColor)); - if (!_XcmsDIConvertColors(ccc, &whitePt, (XcmsColor *)NULL, 1, - XcmsCIEuvYFormat)) { - return(XcmsFailure); - } - puvY_WhitePt = &whitePt; - } - /* Make sure it is a white point, i.e., Y == 1.0 */ - if (puvY_WhitePt->spec.CIEuvY.Y != 1.0) { - return(XcmsFailure); - } - div = (6.0 * puvY_WhitePt->spec.CIEuvY.u_prime) - - (16.0 * puvY_WhitePt->spec.CIEuvY.v_prime) + 12.0; - if (div == 0) { - /* internal error */ - return(XcmsFailure); - } - x = 9.0 * puvY_WhitePt->spec.CIEuvY.u_prime / div; - y = 4.0 * puvY_WhitePt->spec.CIEuvY.v_prime / div; - } else { - x = 9.0 * pColor->spec.CIEuvY.u_prime / div; - y = 4.0 * pColor->spec.CIEuvY.v_prime / div; - } - z = 1.0 - x - y; - - /* Convert from xyz to XYZ */ - /* Conversion uses color normalized lightness based on Y */ - if (y != 0.0) { - XYZ_return.X = x * Y / y; - } else { - XYZ_return.X = x; - } - XYZ_return.Y = Y; - if (y != 0.0) { - XYZ_return.Z = z * Y / y; - } else { - XYZ_return.Z = z; - } - - memcpy((char *)&pColor->spec.CIEXYZ, (char *)&XYZ_return, sizeof(XcmsCIEXYZ)); - /* Identify that format is now CIEXYZ */ - pColor->format = XcmsCIEXYZFormat; - } - - return(XcmsSuccess); -} - - -/* - * NAME - * XcmsCIEXYZToCIEuvY - convert CIEXYZ to CIEuvY - * - * SYNOPSIS - */ -Status -XcmsCIEXYZToCIEuvY( - XcmsCCC ccc, - XcmsColor *puvY_WhitePt, - XcmsColor *pColors_in_out, - unsigned int nColors) -/* - * DESCRIPTION - * Converts color specifications in an array of XcmsColor - * structures from CIEXYZ format to CIEuvY format. - * - * RETURNS - * XcmsFailure if failed, - * XcmsSuccess if succeeded. - * - */ -{ - XcmsCIEuvY uvY_return; - XcmsColor whitePt; - int i; - XcmsColor *pColor = pColors_in_out; - XcmsFloat div; - - /* - * Check arguments - * Postpone checking puvY_WhitePt until it is actually needed - * otherwise converting between XYZ and uvY will fail. - */ - if (pColors_in_out == NULL) { - return(XcmsFailure); - } - - /* - * Now convert each XcmsColor structure to CIEuvY form - */ - for (i = 0; i < nColors; i++, pColor++) { - - /* Make sure original format is CIEXYZ */ - if (!_XcmsCIEXYZ_ValidSpec(pColor)) { - return(XcmsFailure); - } - - /* Convert to CIEuvY */ - div = pColor->spec.CIEXYZ.X + (15.0 * pColor->spec.CIEXYZ.Y) + - (3.0 * pColor->spec.CIEXYZ.Z); - if (div == 0.0) { - /* Use white point since div == 0.0 */ - if (puvY_WhitePt == NULL ) { - return(XcmsFailure); - } - /* - * Make sure white point is in CIEuvY form - */ - if (puvY_WhitePt->format != XcmsCIEuvYFormat) { - /* Make copy of the white point because we're going to modify it */ - memcpy((char *)&whitePt, (char *)puvY_WhitePt, sizeof(XcmsColor)); - if (!_XcmsDIConvertColors(ccc, &whitePt, (XcmsColor *)NULL, 1, - XcmsCIEuvYFormat)) { - return(XcmsFailure); - } - puvY_WhitePt = &whitePt; - } - /* Make sure it is a white point, i.e., Y == 1.0 */ - if (puvY_WhitePt->spec.CIEuvY.Y != 1.0) { - return(XcmsFailure); - } - uvY_return.Y = pColor->spec.CIEXYZ.Y; - uvY_return.u_prime = puvY_WhitePt->spec.CIEuvY.u_prime; - uvY_return.v_prime = puvY_WhitePt->spec.CIEuvY.v_prime; - } else { - uvY_return.u_prime = 4.0 * pColor->spec.CIEXYZ.X / div; - uvY_return.v_prime = 9.0 * pColor->spec.CIEXYZ.Y / div; - uvY_return.Y = pColor->spec.CIEXYZ.Y; - } - - memcpy((char *)&pColor->spec.CIEuvY, (char *)&uvY_return, sizeof(XcmsCIEuvY)); - /* Identify that format is now CIEuvY */ - pColor->format = XcmsCIEuvYFormat; - } - - return(XcmsSuccess); -} + +/* + * 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 + * CIEuvy.c + * + * DESCRIPTION + * This file contains routines that support the CIE u'v'Y + * color space to include conversions to and from the CIE + * XYZ space. + * + * DOCUMENTATION + * "TekColor Color Management System, System Implementor's Manual" + */ + +#ifdef HAVE_CONFIG_H +#include +#endif +#include +#include "Xlibint.h" +#include "Xcmsint.h" +#include "Cv.h" + +#include + +/* + * FORWARD DECLARATIONS + */ +static int CIEuvY_ParseString(register char *spec, XcmsColor *pColor); + +/* + * DEFINES + * Internal definitions that need NOT be exported to any package + * or program using this package. + */ +#ifdef DBL_EPSILON +# define XMY_DBL_EPSILON DBL_EPSILON +#else +# define XMY_DBL_EPSILON 0.00001 +#endif + + +/* + * LOCAL VARIABLES + */ + + /* + * NULL terminated list of functions applied to get from CIEuvY to CIEXYZ + */ +static XcmsConversionProc Fl_CIEuvY_to_CIEXYZ[] = { + XcmsCIEuvYToCIEXYZ, + NULL +}; + + /* + * NULL terminated list of functions applied to get from CIEXYZ to CIEuvY + */ +static XcmsConversionProc Fl_CIEXYZ_to_CIEuvY[] = { + XcmsCIEXYZToCIEuvY, + NULL +}; + + +/* + * GLOBALS + */ + + /* + * CIE uvY Color Space + */ +XcmsColorSpace XcmsCIEuvYColorSpace = + { + _XcmsCIEuvY_prefix, /* prefix */ + XcmsCIEuvYFormat, /* id */ + CIEuvY_ParseString, /* parseString */ + Fl_CIEuvY_to_CIEXYZ, /* to_CIEXYZ */ + Fl_CIEXYZ_to_CIEuvY, /* from_CIEXYZ */ + 1 + }; + + + +/************************************************************************ + * * + * PRIVATE ROUTINES * + * * + ************************************************************************/ + +/* + * NAME + * CIEuvY_ParseString + * + * SYNOPSIS + */ +static int +CIEuvY_ParseString( + register char *spec, + XcmsColor *pColor) +/* + * DESCRIPTION + * This routines takes a string and attempts to convert + * it into a XcmsColor structure with XcmsCIEuvYFormat. + * The assumed CIEuvY string syntax is: + * CIEuvY:// + * Where u, v, and Y are in string input format for floats + * consisting of: + * a. an optional sign + * b. a string of numbers possibly containing a decimal point, + * c. an optional exponent field containing an 'E' or 'e' + * followed by a possibly signed integer string. + * + * RETURNS + * 0 if failed, non-zero otherwise. + */ +{ + int n; + char *pchar; + + if ((pchar = strchr(spec, ':')) == NULL) { + return(XcmsFailure); + } + n = (int)(pchar - spec); + + /* + * Check for proper prefix. + */ + if (strncmp(spec, _XcmsCIEuvY_prefix, n) != 0) { + return(XcmsFailure); + } + + /* + * Attempt to parse the value portion. + */ + if (sscanf(spec + n + 1, "%lf/%lf/%lf", + &pColor->spec.CIEuvY.u_prime, + &pColor->spec.CIEuvY.v_prime, + &pColor->spec.CIEuvY.Y) != 3) { + char *s; /* Maybe failed due to locale */ + int f; + if ((s = strdup(spec))) { + for (f = 0; s[f]; ++f) + if (s[f] == '.') + s[f] = ','; + else if (s[f] == ',') + s[f] = '.'; + if (sscanf(s + n + 1, "%lf/%lf/%lf", + &pColor->spec.CIEuvY.u_prime, + &pColor->spec.CIEuvY.v_prime, + &pColor->spec.CIEuvY.Y) != 3) { + free(s); + return(XcmsFailure); + } + free(s); + } else + return(XcmsFailure); + } + pColor->format = XcmsCIEuvYFormat; + pColor->pixel = 0; + return(_XcmsCIEuvY_ValidSpec(pColor)); +} + + +/************************************************************************ + * * + * PUBLIC ROUTINES * + * * + ************************************************************************/ + +/* + * NAME + * XcmsCIEuvY_ValidSpec + * + * SYNOPSIS + */ +Status +_XcmsCIEuvY_ValidSpec( + XcmsColor *pColor) +/* + * DESCRIPTION + * Checks if color specification valid for CIE u'v'Y. + * + * RETURNS + * XcmsFailure if invalid, + * XcmsSuccess if valid. + * + */ +{ + if (pColor->format != XcmsCIEuvYFormat + || + (pColor->spec.CIEuvY.Y < 0.0 - XMY_DBL_EPSILON) + || + (pColor->spec.CIEuvY.Y > 1.0 + XMY_DBL_EPSILON)) { + return(XcmsFailure); + } + return(XcmsSuccess); +} + + +/* + * NAME + * XcmsCIEuvYToCIEXYZ - convert CIEuvY to CIEXYZ + * + * SYNOPSIS + */ +Status +XcmsCIEuvYToCIEXYZ( + XcmsCCC ccc, + XcmsColor *puvY_WhitePt, + XcmsColor *pColors_in_out, + unsigned int nColors) +/* + * DESCRIPTION + * Converts color specifications in an array of XcmsColor + * structures from CIEuvY format to CIEXYZ format. + * + * RETURNS + * XcmsFailure if failed, + * XcmsSuccess if succeeded. + * + */ +{ + XcmsCIEXYZ XYZ_return; + XcmsColor whitePt; + int i; + XcmsColor *pColor = pColors_in_out; + XcmsFloat div, x, y, z, Y; + + /* + * Check arguments + * Postpone checking puvY_WhitePt until it is actually needed + * otherwise converting between XYZ and uvY will fail. + */ + if (pColors_in_out == NULL) { + return(XcmsFailure); + } + + + /* + * Now convert each XcmsColor structure to CIEXYZ form + */ + for (i = 0; i < nColors; i++, pColor++) { + + /* Make sure original format is CIEuvY */ + if (!_XcmsCIEuvY_ValidSpec(pColor)) { + return(XcmsFailure); + } + + /* + * Convert to CIEXYZ + */ + + Y = pColor->spec.CIEuvY.Y; + + /* Convert color u'v' to xyz space */ + div = (6.0 * pColor->spec.CIEuvY.u_prime) - (16.0 * pColor->spec.CIEuvY.v_prime) + 12.0; + if (div == 0.0) { + /* use white point since div == 0 */ + if (puvY_WhitePt == NULL ) { + return(XcmsFailure); + } + /* + * Make sure white point is in CIEuvY form + */ + if (puvY_WhitePt->format != XcmsCIEuvYFormat) { + /* Make copy of the white point because we're going to modify it */ + memcpy((char *)&whitePt, (char *)puvY_WhitePt, sizeof(XcmsColor)); + if (!_XcmsDIConvertColors(ccc, &whitePt, (XcmsColor *)NULL, 1, + XcmsCIEuvYFormat)) { + return(XcmsFailure); + } + puvY_WhitePt = &whitePt; + } + /* Make sure it is a white point, i.e., Y == 1.0 */ + if (puvY_WhitePt->spec.CIEuvY.Y != 1.0) { + return(XcmsFailure); + } + div = (6.0 * puvY_WhitePt->spec.CIEuvY.u_prime) - + (16.0 * puvY_WhitePt->spec.CIEuvY.v_prime) + 12.0; + if (div == 0) { + /* internal error */ + return(XcmsFailure); + } + x = 9.0 * puvY_WhitePt->spec.CIEuvY.u_prime / div; + y = 4.0 * puvY_WhitePt->spec.CIEuvY.v_prime / div; + } else { + x = 9.0 * pColor->spec.CIEuvY.u_prime / div; + y = 4.0 * pColor->spec.CIEuvY.v_prime / div; + } + z = 1.0 - x - y; + + /* Convert from xyz to XYZ */ + /* Conversion uses color normalized lightness based on Y */ + if (y != 0.0) { + XYZ_return.X = x * Y / y; + } else { + XYZ_return.X = x; + } + XYZ_return.Y = Y; + if (y != 0.0) { + XYZ_return.Z = z * Y / y; + } else { + XYZ_return.Z = z; + } + + memcpy((char *)&pColor->spec.CIEXYZ, (char *)&XYZ_return, sizeof(XcmsCIEXYZ)); + /* Identify that format is now CIEXYZ */ + pColor->format = XcmsCIEXYZFormat; + } + + return(XcmsSuccess); +} + + +/* + * NAME + * XcmsCIEXYZToCIEuvY - convert CIEXYZ to CIEuvY + * + * SYNOPSIS + */ +Status +XcmsCIEXYZToCIEuvY( + XcmsCCC ccc, + XcmsColor *puvY_WhitePt, + XcmsColor *pColors_in_out, + unsigned int nColors) +/* + * DESCRIPTION + * Converts color specifications in an array of XcmsColor + * structures from CIEXYZ format to CIEuvY format. + * + * RETURNS + * XcmsFailure if failed, + * XcmsSuccess if succeeded. + * + */ +{ + XcmsCIEuvY uvY_return; + XcmsColor whitePt; + int i; + XcmsColor *pColor = pColors_in_out; + XcmsFloat div; + + /* + * Check arguments + * Postpone checking puvY_WhitePt until it is actually needed + * otherwise converting between XYZ and uvY will fail. + */ + if (pColors_in_out == NULL) { + return(XcmsFailure); + } + + /* + * Now convert each XcmsColor structure to CIEuvY form + */ + for (i = 0; i < nColors; i++, pColor++) { + + /* Make sure original format is CIEXYZ */ + if (!_XcmsCIEXYZ_ValidSpec(pColor)) { + return(XcmsFailure); + } + + /* Convert to CIEuvY */ + div = pColor->spec.CIEXYZ.X + (15.0 * pColor->spec.CIEXYZ.Y) + + (3.0 * pColor->spec.CIEXYZ.Z); + if (div == 0.0) { + /* Use white point since div == 0.0 */ + if (puvY_WhitePt == NULL ) { + return(XcmsFailure); + } + /* + * Make sure white point is in CIEuvY form + */ + if (puvY_WhitePt->format != XcmsCIEuvYFormat) { + /* Make copy of the white point because we're going to modify it */ + memcpy((char *)&whitePt, (char *)puvY_WhitePt, sizeof(XcmsColor)); + if (!_XcmsDIConvertColors(ccc, &whitePt, (XcmsColor *)NULL, 1, + XcmsCIEuvYFormat)) { + return(XcmsFailure); + } + puvY_WhitePt = &whitePt; + } + /* Make sure it is a white point, i.e., Y == 1.0 */ + if (puvY_WhitePt->spec.CIEuvY.Y != 1.0) { + return(XcmsFailure); + } + uvY_return.Y = pColor->spec.CIEXYZ.Y; + uvY_return.u_prime = puvY_WhitePt->spec.CIEuvY.u_prime; + uvY_return.v_prime = puvY_WhitePt->spec.CIEuvY.v_prime; + } else { + uvY_return.u_prime = 4.0 * pColor->spec.CIEXYZ.X / div; + uvY_return.v_prime = 9.0 * pColor->spec.CIEXYZ.Y / div; + uvY_return.Y = pColor->spec.CIEXYZ.Y; + } + + memcpy((char *)&pColor->spec.CIEuvY, (char *)&uvY_return, sizeof(XcmsCIEuvY)); + /* Identify that format is now CIEuvY */ + pColor->format = XcmsCIEuvYFormat; + } + + return(XcmsSuccess); +} -- cgit v1.2.3