eBookReaderSwitch/mupdf/thirdparty/lcms2/utils/samples/mkgrayer.c

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//
// Little cms
// Copyright (C) 1998-2003 Marti Maria
//
// 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 "lcms.h"
static
int Forward(register WORD In[], register WORD Out[], register LPVOID Cargo)
{
cmsCIELab Lab;
cmsLabEncoded2Float(&Lab, In);
if (fabs(Lab.a) < 3 && fabs(Lab.b) < 3) {
double L_01 = Lab.L / 100.0;
WORD K;
if (L_01 > 1) L_01 = 1;
K = (WORD) floor(L_01* 65535.0 + 0.5);
Out[0] = Out[1] = Out[2] = K;
}
else {
Out[0] = 0xFFFF; Out[1] = 0; Out[2] = 0;
}
return TRUE;
}
int main(int argc, char *argv[])
{
LPLUT BToA0;
cmsHPROFILE hProfile;
fprintf(stderr, "Creating interpol2.icc...");
unlink("interpol2.icc");
hProfile = cmsOpenProfileFromFile("interpol2.icc", "w8");
BToA0 = cmsAllocLUT();
cmsAlloc3DGrid(BToA0, 17, 3, 3);
cmsSample3DGrid(BToA0, Forward, NULL, 0);
cmsAddTag(hProfile, icSigBToA0Tag, BToA0);
cmsSetColorSpace(hProfile, icSigRgbData);
cmsSetPCS(hProfile, icSigLabData);
cmsSetDeviceClass(hProfile, icSigOutputClass);
cmsAddTag(hProfile, icSigProfileDescriptionTag, "Interpolation test");
cmsAddTag(hProfile, icSigCopyrightTag, "Copyright (c) HP 2007. All rights reserved.");
cmsAddTag(hProfile, icSigDeviceMfgDescTag, "Little cms");
cmsAddTag(hProfile, icSigDeviceModelDescTag, "Interpolation test profile");
cmsCloseProfile(hProfile);
cmsFreeLUT(BToA0);
fprintf(stderr, "Done.\n");
return 0;
}