Re: [Lcms-user] lcms type

[Freer, D. <DF...@xe...>]

Hi Marti

That’s great thanks. Sadly I’m still using v1.18 as I haven’t got my head around pipelines and stages yet as the legacy code I’m using has lots of CLut processing. Should 5 spot type be available in v1.18 too?

Best regards

Dave Freer

From: Mar...@li... [mailto:Mar...@li...]
Sent: 05 March 2014 19:38
To: Freer, David
Cc: lcm...@li...
Subject: Re: [Lcms-user] lcms type


Hi Dave
I hope I’m doing this correctly by mass emailing the list.
This is the whole point of the mailing list: to share your questions and knowleage with other people.
I  want to represent a CMYK type with 5 spots. I know that CMYK with 4 spots is (CHANNELS_SH(4)|BYTES_SH(1)|EXTRA_SH(4)) as that works but I can’t get 5 spots to create a transform as below where input and output types are the same, I get an error “Unknown input format”
I have tried this and it works to me (using latest GIT code)

cmsUInt32Number input_type =  (CHANNELS_SH(4)|BYTES_SH(1)|EXTRA_SH(5)) ;
cmsHPROFILE hProfile = cmsOpenProfileFromFile(".USWebCoatedSWOP.icc", "r");

 cmsHTRANSFORM xform = cmsCreateTransform( hProfile, input_type, hProfile, input_type,                 INTENT_ABSOLUTE_COLORIMETRIC,0);

How do you get the error message?

Regards
Marti
Marti Maria
The Little CMS Project
http://www.littlecms.com


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