1
2/*
3 * Code and supporting documentation (c) Copyright 1990 1991 Tektronix, Inc.
4 * 	All Rights Reserved
5 *
6 * This file is a component of an X Window System-specific implementation
7 * of XCMS based on the TekColor Color Management System.  Permission is
8 * hereby granted to use, copy, modify, sell, and otherwise distribute this
9 * software and its documentation for any purpose and without fee, provided
10 * that this copyright, permission, and disclaimer notice is reproduced in
11 * all copies of this software and in supporting documentation.  TekColor
12 * is a trademark of Tektronix, Inc.
13 *
14 * Tektronix makes no representation about the suitability of this software
15 * for any purpose.  It is provided "as is" and with all faults.
16 *
17 * TEKTRONIX DISCLAIMS ALL WARRANTIES APPLICABLE TO THIS SOFTWARE,
18 * INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
19 * PARTICULAR PURPOSE.  IN NO EVENT SHALL TEKTRONIX BE LIABLE FOR ANY
20 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
21 * RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER IN AN ACTION OF
22 * CONTRACT, NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
23 * CONNECTION WITH THE USE OR THE PERFORMANCE OF THIS SOFTWARE.
24 *
25 *
26 *	NAME
27 *		CIELuvWpAj.c
28 *
29 *	DESCRIPTION
30 *		This file contains routine(s) that support white point
31 *		adjustment of color specifications in the CIE CIELuv.color
32 *		space.
33 */
34
35#ifdef HAVE_CONFIG_H
36#include <config.h>
37#endif
38#include "Xlibint.h"
39#include "Xcmsint.h"
40#include "Cv.h"
41
42
43
44/************************************************************************
45 *									*
46 *			 PUBLIC ROUTINES				*
47 *									*
48 ************************************************************************/
49
50/*
51 *	NAME
52 *		XcmsCIELuvWhiteShiftColors
53 *
54 *	SYNOPSIS
55 */
56Status
57XcmsCIELuvWhiteShiftColors(
58    XcmsCCC ccc,
59    XcmsColor *pWhitePtFrom,
60    XcmsColor *pWhitePtTo,
61    XcmsColorFormat destSpecFmt,
62    XcmsColor *pColors_in_out,
63    unsigned int nColors,
64    Bool *pCompressed)
65/*
66 *	DESCRIPTION
67 *		Adjusts color specifications in an array of XcmsColor
68 *		structures for white point differences.
69 *
70 *	RETURNS
71 *		XcmsFailure if failed,
72 *		XcmsSuccess if succeeded without gamut compression,
73 *		XcmsSuccessWithCompression if succeeded with
74 *			gamut compression.
75 */
76{
77    if (pWhitePtFrom == NULL || pWhitePtTo == NULL || pColors_in_out == NULL) {
78	return(XcmsFailure);
79    }
80
81    /*
82     * Convert to CIELuv using pWhitePtFrom
83     *    We can ignore return value for compression because we are converting
84     *    to XcmsCIELuvFormat which is device-independent, not device-dependent.
85     */
86    if (_XcmsConvertColorsWithWhitePt(ccc, pColors_in_out, pWhitePtFrom,
87	    nColors, XcmsCIELuvFormat, pCompressed) == XcmsFailure) {
88	return(XcmsFailure);
89    }
90
91    /*
92     * Convert from CIELuv to destSpecFmt using pWhitePtTo
93     */
94    return(_XcmsConvertColorsWithWhitePt(ccc, pColors_in_out, pWhitePtTo,
95	    nColors, destSpecFmt, pCompressed));
96}
97