Any idea how to put the processing elements in the right order during
creation of a transform from sRGB to XYZ floats?.
Following code demonstrates the issue:
/* gcc -Wall -g transforms.c -o transforms `pkg-config --cflags --libs lcms2` */
#include <lcms2.h>
void errorHandlerFunction ( cmsContext ContextID,
cmsUInt32Number ErrorCode,
const char * ErrorText )
{ printf( "lcms2: %s\n", ErrorText ); }
int main(int argc, char **argv)
{
cmsSetLogErrorHandler( lcm2ErrorHandlerFunction );
/* adapt profile paths to your needs */
cmsHPROFILE p_in = cmsOpenProfileFromFile(
"/usr/share/color/icc/sRGB.icc","rb");
cmsHPROFILE p_out = cmsOpenProfileFromFile(
"/usr/share/color/icc/XYZ.icc","rb");
cmsUInt32Number format_in = TYPE_RGB_FLT,
format_out = TYPE_XYZ_FLT;
cmsHTRANSFORM xform = cmsCreateTransform( p_in, format_in,
p_out, format_out,
0, 0 );
cmsHPROFILE dl = cmsTransform2DeviceLink( xform, 4.2, 0 );
if(!cmsSaveProfileToFile( dl, "sRGB-XYZ_dl.icc" ))
printf("error in writing sRGB-XYZ_dl.icc\n");
return 0;
}
kind regards
Kai-Uwe Behrmann
--
developing for colour management
www.behrmann.name + www.oyranos.org
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