151 lines
3.7 KiB
C
151 lines
3.7 KiB
C
//
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// Little cms
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// Copyright (C) 1998-2010 Marti Maria
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the Software
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// is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
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// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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// Creates a devicelink that decodes TIFF8 Lab files
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#include "lcms2mt.h"
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#include <stdlib.h>
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#include <math.h>
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static
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double DecodeAbTIFF(double ab)
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{
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if (ab <= 128.)
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ab += 127.;
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else
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ab -= 127.;
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return ab;
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}
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static
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cmsToneCurve* CreateStep(void)
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{
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cmsToneCurve* Gamma;
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cmsUInt16Number* Table;
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int i;
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double a;
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Table = calloc(4096, sizeof(cmsUInt16Number));
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if (Table == NULL) return NULL;
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for (i=0; i < 4096; i++) {
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a = (double) i * 255. / 4095.;
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a = DecodeAbTIFF(a);
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Table[i] = (cmsUInt16Number) floor(a * 257. + 0.5);
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}
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Gamma = cmsBuildTabulatedToneCurve16(0, 4096, Table);
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free(Table);
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return Gamma;
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}
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static
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cmsToneCurve* CreateLinear(void)
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{
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cmsUInt16Number Linear[2] = { 0, 0xffff };
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return cmsBuildTabulatedToneCurve16(0, 2, Linear);
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}
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// Set the copyright and description
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static
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cmsBool SetTextTags(cmsHPROFILE hProfile)
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{
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cmsMLU *DescriptionMLU, *CopyrightMLU;
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cmsBool rc = FALSE;
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DescriptionMLU = cmsMLUalloc(0, 1);
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CopyrightMLU = cmsMLUalloc(0, 1);
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if (DescriptionMLU == NULL || CopyrightMLU == NULL) goto Error;
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if (!cmsMLUsetASCII(DescriptionMLU, "en", "US", "Little cms Tiff8 CIELab")) goto Error;
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if (!cmsMLUsetASCII(CopyrightMLU, "en", "US", "Copyright (c) Marti Maria, 2010. All rights reserved.")) goto Error;
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if (!cmsWriteTag(hProfile, cmsSigProfileDescriptionTag, DescriptionMLU)) goto Error;
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if (!cmsWriteTag(hProfile, cmsSigCopyrightTag, CopyrightMLU)) goto Error;
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rc = TRUE;
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Error:
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if (DescriptionMLU)
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cmsMLUfree(DescriptionMLU);
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if (CopyrightMLU)
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cmsMLUfree(CopyrightMLU);
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return rc;
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}
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int main(int argc, char *argv[])
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{
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cmsHPROFILE hProfile;
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cmsPipeline *AToB0;
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cmsToneCurve* PreLinear[3];
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cmsToneCurve *Lin, *Step;
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fprintf(stderr, "Creating lcmstiff8.icm...");
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remove("lcmstiff8.icm");
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hProfile = cmsOpenProfileFromFile("lcmstiff8.icm", "w");
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// Create linearization
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Lin = CreateLinear();
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Step = CreateStep();
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PreLinear[0] = Lin;
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PreLinear[1] = Step;
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PreLinear[2] = Step;
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AToB0 = cmsPipelineAlloc(0, 3, 3);
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cmsPipelineInsertStage(AToB0,
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cmsAT_BEGIN, cmsStageAllocToneCurves(0, 3, PreLinear));
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cmsSetColorSpace(hProfile, cmsSigLabData);
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cmsSetPCS(hProfile, cmsSigLabData);
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cmsSetDeviceClass(hProfile, cmsSigLinkClass);
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cmsSetProfileVersion(hProfile, 4.2);
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cmsWriteTag(hProfile, cmsSigAToB0Tag, AToB0);
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SetTextTags(hProfile);
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cmsCloseProfile(hProfile);
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cmsFreeToneCurve(Lin);
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cmsFreeToneCurve(Step);
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cmsPipelineFree(AToB0);
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fprintf(stderr, "Done.\n");
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return 0;
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}
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