diff options
Diffstat (limited to 'nx-X11/lib/X11/LuvGcL.c')
| -rw-r--r-- | nx-X11/lib/X11/LuvGcL.c | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/nx-X11/lib/X11/LuvGcL.c b/nx-X11/lib/X11/LuvGcL.c deleted file mode 100644 index f5b6d99e4..000000000 --- a/nx-X11/lib/X11/LuvGcL.c +++ /dev/null @@ -1,174 +0,0 @@ - -/* - * 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 - * CIELuvGcL.c - * - * DESCRIPTION - * Source for XcmsCIELuvClipL() gamut compression routine. - * - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include "Xlibint.h" -#include "Xcmsint.h" -#include "Cv.h" - - -/************************************************************************ - * * - * PUBLIC ROUTINES * - * * - ************************************************************************/ - -/* - * NAME - * XcmsCIELuvClipL - Return the closest L* - * - * SYNOPSIS - */ -/* ARGSUSED */ -Status -XcmsCIELuvClipL ( - XcmsCCC ccc, - XcmsColor *pColors_in_out, - unsigned int nColors, - unsigned int i, - Bool *pCompressed) -/* - * DESCRIPTION - * Return the closest L* for a specific hue and chroma. - * This routine takes any color as input and outputs - * a CIE XYZ color. - * - * Since this routine works with the L* within - * pColor_in_out intermediate results may be returned - * even though it may be invalid. - * - * RETURNS - * XcmsFailure - Failure - * XcmsSuccess - Succeeded - * - */ -{ - XcmsCCCRec myCCC; - XcmsColor *pColor; - XcmsColor Luv_max; - XcmsFloat hue, chroma, maxChroma; - Status retval; - - /* Use my own CCC */ - memcpy ((char *)&myCCC, (char *)ccc, sizeof(XcmsCCCRec)); - myCCC.clientWhitePt.format = XcmsUndefinedFormat;/* Inherit Screen WP */ - myCCC.gamutCompProc = (XcmsCompressionProc)NULL;/* no gamut compression */ - - /* - * Color specification passed as input can be assumed to: - * 1. Be in XcmsCIEXYZFormat - * 2. Already be white point adjusted for the Screen White Point. - * This means that the white point now associated with this - * color spec is the Screen White Point (even if the - * ccc->clientWhitePt differs). - */ - - pColor = pColors_in_out + i; - - if (ccc->visual->class < StaticColor) { - /* - * GRAY ! - */ - return(XcmsFailure); - } else { - /* Convert from CIEXYZ to CIE L*u*v* format */ - if (_XcmsDIConvertColors(&myCCC, pColor, - ScreenWhitePointOfCCC(&myCCC), 1, XcmsCIELuvFormat) - == XcmsFailure) { - return(XcmsFailure); - } - - hue = XCMS_CIELUV_PMETRIC_HUE(pColor->spec.CIELuv.u_star, - pColor->spec.CIELuv.v_star); - chroma = XCMS_CIELUV_PMETRIC_CHROMA(pColor->spec.CIELuv.u_star, - pColor->spec.CIELuv.v_star); - /* Step 1: compute the maximum L* and chroma for this hue. */ - /* This copy may be overkill but it preserves the pixel etc. */ - memcpy((char *)&Luv_max, (char *)pColor, sizeof(XcmsColor)); - if (_XcmsCIELuvQueryMaxLCRGB (&myCCC, hue, &Luv_max, - (XcmsRGBi *)NULL) == XcmsFailure) { - return (XcmsFailure); - } - maxChroma = XCMS_CIELUV_PMETRIC_CHROMA(Luv_max.spec.CIELuv.u_star, - Luv_max.spec.CIELuv.v_star); - - /* Now check and return the appropriate L* */ - if (chroma == maxChroma) { - /* When the chroma input is equal to the maximum chroma */ - /* merely return the L* for that chroma. */ - memcpy((char *)pColor, (char *)&Luv_max, sizeof(XcmsColor)); - retval = _XcmsDIConvertColors(&myCCC, pColor, - ScreenWhitePointOfCCC(&myCCC), 1, XcmsCIEXYZFormat); - } else if (chroma > maxChroma) { - /* When the chroma input is greater than the maximum chroma */ - /* merely return the L* and chroma for the given hue. */ - memcpy((char *)pColor, (char *)&Luv_max, sizeof(XcmsColor)); - return (XcmsFailure); - } else if (pColor->spec.CIELuv.L_star < Luv_max.spec.CIELuv.L_star) { - /* Find the minimum lightness for the given chroma. */ - if (pColor->format != XcmsCIELuvFormat) { - if (_XcmsDIConvertColors(ccc, pColor, - ScreenWhitePointOfCCC(ccc), 1, XcmsCIELuvFormat) - == XcmsFailure) { - return(XcmsFailure); - } - } - if (XcmsCIELuvQueryMinL(&myCCC, degrees(hue), chroma, pColor) - == XcmsFailure) { - return (XcmsFailure); - } - retval = _XcmsDIConvertColors(&myCCC, pColor, - ScreenWhitePointOfCCC(&myCCC), 1, XcmsCIEXYZFormat); - } else { - /* Find the maximum lightness for the given chroma. */ - if (pColor->format != XcmsCIELuvFormat) { - if (_XcmsDIConvertColors(ccc, pColor, - ScreenWhitePointOfCCC(ccc), 1, XcmsCIELuvFormat) - == XcmsFailure) { - return(XcmsFailure); - } - } - if (XcmsCIELuvQueryMaxL(&myCCC, degrees(hue), chroma, pColor) - == XcmsFailure) { - return (XcmsFailure); - } - retval = _XcmsDIConvertColors(&myCCC, pColor, - ScreenWhitePointOfCCC(&myCCC), 1, XcmsCIEXYZFormat); - } - if (retval != XcmsFailure && pCompressed != NULL) { - *(pCompressed + i) = True; - } - return(retval); - } -} |