--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/lcms2/utils/samples/wtpt.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,146 @@
+//
+//  Little cms
+//  Copyright (C) 1998-2015 Marti Maria
+//
+//---------------------------------------------------------------------------------
+//
+//  Little Color Management System
+//  Copyright (c) 1998-2014 Marti Maria Saguer
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the Software
+// is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+//---------------------------------------------------------------------------------
+
+#include "utils.h"
+
+
+// The toggles stuff
+
+static cmsBool lShowXYZ = TRUE;
+static cmsBool lShowLab = FALSE;
+static cmsBool lShowLCh = FALSE;
+
+#define SW '-'
+
+static
+void HandleSwitches(int argc, char *argv[])
+{
+       int s;
+
+       while ((s = xgetopt(argc, argv, "lcx")) != EOF) {
+
+              switch (s){
+
+
+              case 'l':
+                     lShowLab = TRUE;
+                     break;
+
+              case 'c':
+                     lShowLCh = TRUE;
+                     break;
+
+              case 'x':
+                     lShowXYZ = FALSE;
+                     break;
+
+              default:
+
+                     FatalError("Unknown option - run without args to see valid ones.\n");
+              }
+       }
+}
+
+static
+void Help(void)
+{
+       fprintf(stderr, "little CMS ICC white point utility - v3 [LittleCMS %2.2f]\n", LCMS_VERSION / 1000.0);
+
+       fprintf(stderr, "usage: wtpt [flags] [<ICC profile>]\n\n");
+
+       fprintf(stderr, "flags:\n\n");
+       
+       fprintf(stderr, "%cl - CIE Lab\n", SW);
+       fprintf(stderr, "%cc - CIE LCh\n", SW);
+       fprintf(stderr, "%cx - Don't show XYZ\n", SW);
+
+       fprintf(stderr, "\nIf no parameters are given, then this program will\n");
+       fprintf(stderr, "ask for XYZ value of media white. If parameter given, it must be\n");
+       fprintf(stderr, "the profile to inspect.\n\n");
+
+       fprintf(stderr, "This program is intended to be a demo of the little cms\n"
+              "engine. Both lcms and this program are freeware. You can\n"
+              "obtain both in source code at http://www.littlecms.com\n"
+              "For suggestions, comments, bug reports etc. send mail to\n"
+              "info@littlecms.com\n\n");
+       exit(0);
+}
+
+
+
+static
+void ShowWhitePoint(cmsCIEXYZ* WtPt)
+{
+       cmsCIELab Lab;
+       cmsCIELCh LCh;
+       cmsCIExyY xyY;
+
+
+       cmsXYZ2Lab(NULL, &Lab, WtPt);
+       cmsLab2LCh(&LCh, &Lab);
+       cmsXYZ2xyY(&xyY, WtPt);
+
+
+       if (lShowXYZ) printf("XYZ=(%3.1f, %3.1f, %3.1f)\n", WtPt->X, WtPt->Y, WtPt->Z);
+       if (lShowLab) printf("Lab=(%3.3f, %3.3f, %3.3f)\n", Lab.L, Lab.a, Lab.b);
+       if (lShowLCh) printf("LCh=(%3.3f, %3.3f, %3.3f)\n", LCh.L, LCh.C, LCh.h);
+       {
+              double Ssens = (LCh.C * 100.0 )/ sqrt(LCh.C*LCh.C + LCh.L * LCh.L) ;
+              printf("Sens = %f\n", Ssens);
+       }
+
+}
+
+
+int main(int argc, char *argv[])
+{
+       int nargs;
+
+       InitUtils("wtpt");
+       
+       HandleSwitches(argc, argv);
+
+       nargs = (argc - xoptind);
+
+       if (nargs != 1)
+              Help();
+
+       else {
+              cmsCIEXYZ* WtPt;
+              cmsHPROFILE hProfile = cmsOpenProfileFromFile(argv[xoptind], "r");  
+              if (hProfile == NULL) return 1;
+
+              WtPt = cmsReadTag(hProfile, cmsSigMediaWhitePointTag);
+              ShowWhitePoint(WtPt);
+              cmsCloseProfile(hProfile);
+       }
+       
+       return 0;
+}
+