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author | Mike Gabriel <mike.gabriel@das-netzwerkteam.de> | 2017-07-21 12:31:09 +0200 |
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committer | Mike Gabriel <mike.gabriel@das-netzwerkteam.de> | 2017-08-25 10:06:49 +0200 |
commit | c350873c7c977efe5210484f04160be45f84ba7e (patch) | |
tree | 717d33eb315f4def1307d65108d14715696cd5cf /nx-X11/lib/src/xcms/LabGcC.c | |
parent | 1472e7e37838f17b7ed948fa206e8c3434a9d346 (diff) | |
download | nx-libs-c350873c7c977efe5210484f04160be45f84ba7e.tar.gz nx-libs-c350873c7c977efe5210484f04160be45f84ba7e.tar.bz2 nx-libs-c350873c7c977efe5210484f04160be45f84ba7e.zip |
Convert nx-X11/lib/ build flow from imake to autotools.
Diffstat (limited to 'nx-X11/lib/src/xcms/LabGcC.c')
-rw-r--r-- | nx-X11/lib/src/xcms/LabGcC.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/nx-X11/lib/src/xcms/LabGcC.c b/nx-X11/lib/src/xcms/LabGcC.c new file mode 100644 index 000000000..a5ec9f457 --- /dev/null +++ b/nx-X11/lib/src/xcms/LabGcC.c @@ -0,0 +1,127 @@ + +/* + * 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 + * CIELabGcC.c + * + * DESCRIPTION + * Source for XcmsCIELabClipuv() gamut compression routine. + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include "Xlibint.h" +#include "Xcmsint.h" +#include "Cv.h" + + +/************************************************************************ + * * + * PUBLIC ROUTINES * + * * + ************************************************************************/ + +/* + * NAME + * XcmsCIELabClipab - Reduce the chroma for a hue and L* + * + * SYNOPSIS + */ +/* ARGSUSED */ +Status +XcmsCIELabClipab ( + XcmsCCC ccc, + XcmsColor *pColors_in_out, + unsigned int nColors, + unsigned int i, + Bool *pCompressed) +/* + * DESCRIPTION + * Reduce the Chroma for a specific hue and chroma to + * to bring the given color into the gamut of the + * specified device. As required of gamut compression + * functions, this routine returns pColor_in_out + * in XcmsCIEXYZFormat on successful completion. + * + * 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 + * + */ +{ + Status retval; + XcmsColor *pColor; + + /* + * 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 < PseudoColor) { + /* + * GRAY ! + */ + _XcmsDIConvertColors(ccc, pColor, ScreenWhitePointOfCCC(ccc), + 1, XcmsCIELabFormat); + _XcmsDIConvertColors(ccc, pColor, ScreenWhitePointOfCCC(ccc), + 1, XcmsCIEXYZFormat); + if (pCompressed) { + *(pCompressed + i) = True; + } + return(XcmsSuccess); + } else { + if (pColor->format != XcmsCIELabFormat) { + if (_XcmsDIConvertColors(ccc, pColor, + &ccc->pPerScrnInfo->screenWhitePt, 1, XcmsCIELabFormat) + == XcmsFailure) { + return(XcmsFailure); + } + } + if (XcmsCIELabQueryMaxC(ccc, + degrees(XCMS_CIELAB_PMETRIC_HUE(pColor->spec.CIELab.a_star, + pColor->spec.CIELab.b_star)), + pColor->spec.CIELab.L_star, + pColor) == XcmsFailure) { + return(XcmsFailure); + } + retval = _XcmsDIConvertColors(ccc, pColor, + &ccc->pPerScrnInfo->screenWhitePt, 1, XcmsCIEXYZFormat); + if (retval != XcmsFailure && pCompressed != NULL) { + *(pCompressed + i) = True; + } + return(retval); + } +} |