I'm trying to create a v4 D65 profile using cmsCreateProfilePlaceholder() and settings values myself. If I understand correctly, all v4 profiles have to have a D50 whitepoint and a 'chad' adaption tag to convert to and from the real whitepoint. The only way to write the chad seems to be from cmsCreateRGBProfile() so creating a v4 D65 profile looks basically impossible using cmsCreateProfilePlaceholder().
Could we perhaps export _cmsAdaptationMatrix(), or perhaps better, if the profile version is v4 (from cmsSetProfileVersion) and we set a whitepoint using cmsSigMediaWhitePointTag then this automatically converts to a D50 whitepoint and updates the chad to reflect reality. Comments welcome. Richard. ------------------------------------------------------------------------------ _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
