[Lcms-user] Idiots guide to CMYK->RGB conversions

[Brian F. <br...@da...>]

Hi,

I've looked at every message on this list and I can't figure out how to =
convert CMYK values into RGB values using the API

I understand fully the concepts beign used here but I'm a total beginner =
when it comes to the C language.

Please, please, could you send me some code on how to do this... If not =
please explain my question below.

I've looked at the 'simple.c' file included with the source and I cant =
figure how to use it? What type are inputBuffer & outputBuffer. Do I =
pass an array of values into the function cmsDoTransform()?

here is what I have being messing around with so far (see below), If =
anyone could make this work I would be able to adapt it into a simple =
program and that's all I need. Thanks a million....

Brian Fallon


 SHORT inputBuffer[] =3D {0x00,0x00,0x00,0x00};
 SHORT outputBuffer[3];

    cmsHPROFILE hInProfile, hOutProfile;
    cmsHTRANSFORM hTransform;

    hInProfile  =3D =
cmsOpenProfileFromFile("D:/Downloads/Development/lcms/lcms107b/profiles/t=
r01_d50.icm", "r");
    hOutProfile =3D =
cmsOpenProfileFromFile("D:/Downloads/Development/lcms/Lcms107b/profiles/s=
RGB Color Space Profile.ICM", "r");=20
 hTransform =3D cmsCreateTransform(hInProfile, TYPE_CMYK_16, =
hOutProfile, TYPE_RGB_8, INTENT_PERCEPTUAL, 0);


 cmsDoTransform(hTransform, inputBuffer, outputBuffer, 1);


    cmsDeleteTransform(hTransform);
    cmsCloseProfile(hInProfile);
    cmsCloseProfile(hOutProfile);

 printf("Input values: cmyk( %d, %d, %d, %d )\n", inputBuffer[0], =
inputBuffer[1], inputBuffer[2], inputBuffer[3]);
 printf("Input values: rgb( %d, %d, %d)\n", outputBuffer[0], =
outputBuffer[1], outputBuffer[2]);
 return 0;=20
}