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comparison mupdf-source/thirdparty/lcms2/utils/samples/wtpt.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 //
2 // Little cms
3 // Copyright (C) 1998-2015 Marti Maria
4 //
5 //---------------------------------------------------------------------------------
6 //
7 // Little Color Management System
8 // Copyright (c) 1998-2014 Marti Maria Saguer
9 //
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the "Software"),
12 // to deal in the Software without restriction, including without limitation
13 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
14 // and/or sell copies of the Software, and to permit persons to whom the Software
15 // is furnished to do so, subject to the following conditions:
16 //
17 // The above copyright notice and this permission notice shall be included in
18 // all copies or substantial portions of the Software.
19 //
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
22 // THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 //
28 //---------------------------------------------------------------------------------
29
30 #include "utils.h"
31
32
33 // The toggles stuff
34
35 static cmsBool lShowXYZ = TRUE;
36 static cmsBool lShowLab = FALSE;
37 static cmsBool lShowLCh = FALSE;
38
39 #define SW '-'
40
41 static
42 void HandleSwitches(int argc, char *argv[])
43 {
44 int s;
45
46 while ((s = xgetopt(argc, argv, "lcx")) != EOF) {
47
48 switch (s){
49
50
51 case 'l':
52 lShowLab = TRUE;
53 break;
54
55 case 'c':
56 lShowLCh = TRUE;
57 break;
58
59 case 'x':
60 lShowXYZ = FALSE;
61 break;
62
63 default:
64
65 FatalError("Unknown option - run without args to see valid ones.\n");
66 }
67 }
68 }
69
70 static
71 void Help(void)
72 {
73 fprintf(stderr, "little CMS ICC white point utility - v3 [LittleCMS %2.2f]\n", LCMS_VERSION / 1000.0);
74
75 fprintf(stderr, "usage: wtpt [flags] [<ICC profile>]\n\n");
76
77 fprintf(stderr, "flags:\n\n");
78
79 fprintf(stderr, "%cl - CIE Lab\n", SW);
80 fprintf(stderr, "%cc - CIE LCh\n", SW);
81 fprintf(stderr, "%cx - Don't show XYZ\n", SW);
82
83 fprintf(stderr, "\nIf no parameters are given, then this program will\n");
84 fprintf(stderr, "ask for XYZ value of media white. If parameter given, it must be\n");
85 fprintf(stderr, "the profile to inspect.\n\n");
86
87 fprintf(stderr, "This program is intended to be a demo of the little cms\n"
88 "engine. Both lcms and this program are freeware. You can\n"
89 "obtain both in source code at http://www.littlecms.com\n"
90 "For suggestions, comments, bug reports etc. send mail to\n"
91 "info@littlecms.com\n\n");
92 exit(0);
93 }
94
95
96
97 static
98 void ShowWhitePoint(cmsCIEXYZ* WtPt)
99 {
100 cmsCIELab Lab;
101 cmsCIELCh LCh;
102 cmsCIExyY xyY;
103
104
105 cmsXYZ2Lab(NULL, &Lab, WtPt);
106 cmsLab2LCh(&LCh, &Lab);
107 cmsXYZ2xyY(&xyY, WtPt);
108
109
110 if (lShowXYZ) printf("XYZ=(%3.1f, %3.1f, %3.1f)\n", WtPt->X, WtPt->Y, WtPt->Z);
111 if (lShowLab) printf("Lab=(%3.3f, %3.3f, %3.3f)\n", Lab.L, Lab.a, Lab.b);
112 if (lShowLCh) printf("LCh=(%3.3f, %3.3f, %3.3f)\n", LCh.L, LCh.C, LCh.h);
113 {
114 double Ssens = (LCh.C * 100.0 )/ sqrt(LCh.C*LCh.C + LCh.L * LCh.L) ;
115 printf("Sens = %f\n", Ssens);
116 }
117
118 }
119
120
121 int main(int argc, char *argv[])
122 {
123 int nargs;
124
125 InitUtils("wtpt");
126
127 HandleSwitches(argc, argv);
128
129 nargs = (argc - xoptind);
130
131 if (nargs != 1)
132 Help();
133
134 else {
135 cmsCIEXYZ* WtPt;
136 cmsHPROFILE hProfile = cmsOpenProfileFromFile(argv[xoptind], "r");
137 if (hProfile == NULL) return 1;
138
139 WtPt = cmsReadTag(hProfile, cmsSigMediaWhitePointTag);
140 ShowWhitePoint(WtPt);
141 cmsCloseProfile(hProfile);
142 }
143
144 return 0;
145 }
146