File indexing completed on 2025-02-23 04:10:58 

0001 /*
0002  *  SPDX-License-Identifier: GPL-3.0-or-later
0003  */
0004 
0005 #include "TestKoLcmsColorProfile.h"
0006 
0007 #include <cmath>
0008 #include <lcms2.h>
0009 
0010 #include <KoColor.h>
0011 #include <KoColorProfile.h>
0012 #include <KoColorSpace.h>
0013 #include <KoColorSpaceRegistry.h>
0014 #include <simpletest.h>
0015 
0016 qreal testRounding(qreal value)
0017 {
0018     qreal factor;
0019     int temp;
0020     const int numPlaces = 3;
0021 
0022     factor = pow(10.0, numPlaces);
0023     temp = (int)(value * factor + 0.5);
0024     return temp / factor;
0025 }
0026 
0027 void TestKoLcmsColorProfile::testConversion()
0028 {
0029     const KoColorSpace *sRgb = KoColorSpaceRegistry::instance()->rgb16("sRGB built-in");
0030     Q_ASSERT(sRgb);
0031     const KoColorSpace *linearRgb = KoColorSpaceRegistry::instance()->rgb16("scRGB (linear)");
0032     Q_ASSERT(linearRgb);
0033 
0034     quint16 src[4];
0035     src[0] = 257;
0036     src[1] = 257;
0037     src[2] = 257;
0038     src[3] = 65535;
0039 
0040     quint16 dst[4];
0041     memset(&dst, 0, 8);
0042 
0043     linearRgb->convertPixelsTo((quint8 *)&src, (quint8 *)&dst, sRgb, 1, KoColorConversionTransformation::IntentRelativeColorimetric, KoColorConversionTransformation::BlackpointCompensation);
0044 
0045     quint16 dst2[4];
0046     memset(&dst2, 0, 8);
0047 
0048     cmsHPROFILE sRgbProfile = cmsCreate_sRGBProfile();
0049     QByteArray rawData = linearRgb->profile()->rawData();
0050     cmsHPROFILE linearRgbProfile = cmsOpenProfileFromMem((void *)rawData.constData(), rawData.size());
0051 
0052     cmsHTRANSFORM tf = cmsCreateTransform(linearRgbProfile,
0053                                           TYPE_BGRA_16,
0054                                           sRgbProfile,
0055                                           TYPE_BGRA_16,
0056                                           INTENT_RELATIVE_COLORIMETRIC,
0057                                           cmsFLAGS_NOOPTIMIZE);
0058 
0059     cmsDoTransform(tf, (quint8 *)&src, (quint8 *)&dst2, 1);
0060 
0061     Q_ASSERT(dst[0] == dst2[0]);
0062 
0063 }
0064 
0065 void TestKoLcmsColorProfile::testProofingConversion()
0066 {
0067     const KoColorSpace *sRgb = KoColorSpaceRegistry::instance()->rgb16("sRGB built-in");
0068     Q_ASSERT(sRgb);
0069     const KoColorSpace *lab = KoColorSpaceRegistry::instance()->lab16();//there's only one lab profile, replace with it's name.
0070     Q_ASSERT(lab);
0071 
0072     quint16 src[4];//the following ought to give us a purple only possible in lab. I can't seem to proof this away, somehow...
0073     src[0] = 32896;
0074     src[1] = 65535;
0075     src[2] = 0;
0076     src[3] = 65535;
0077 
0078     quint16 dst[4];
0079     memset(&dst, 0, 8);
0080 
0081     cmsHPROFILE sRgbProfile = cmsCreate_sRGBProfile();
0082     cmsHPROFILE LabProfile = cmsCreateLab4Profile(NULL);
0083 
0084     quint16 alarm[cmsMAXCHANNELS]={0};
0085     alarm[0] = 65535;
0086     alarm[1] = 0;
0087     alarm[2] = 0;
0088     alarm[3] = 65535;
0089     cmsSetAlarmCodes(alarm);
0090 
0091     cmsHTRANSFORM tf = cmsCreateProofingTransform(LabProfile,
0092                                           TYPE_Lab_16,
0093                                           LabProfile,
0094                                           TYPE_Lab_16,
0095                                           sRgbProfile,
0096                                           INTENT_ABSOLUTE_COLORIMETRIC,
0097                                           INTENT_ABSOLUTE_COLORIMETRIC,
0098                                           cmsFLAGS_SOFTPROOFING|cmsFLAGS_GAMUTCHECK);
0099 
0100     cmsDoTransform(tf, (quint8 *)&src, (quint8 *)&dst, 1);
0101 
0102     qDebug()<<dst[0]<<","<<dst[1]<<","<<dst[2]<<","<<dst[3];
0103     Q_ASSERT((dst[0] == alarm[0]) && (dst[1] == alarm[1]) && (dst[2] == alarm[2]));
0104 
0105 }
0106 SIMPLE_TEST_MAIN(TestKoLcmsColorProfile)