Re: [Lcms-user] Serializing CIELab to buffer

[Noel C. <NCa...@Pr...>]

Look into the cmsSaveProfile.... functions.

 

By the way (for Marti) there's a typo in the documentation for cmsSaveProfileToMem; "guareanteed" should be "guaranteed".

 

-Noel

 

From: Aaron Boxer [mailto:bo...@gm...] 
Sent: Fri, February 9, 2018 8:33 AM
To: lcm...@li...
Subject: [Lcms-user] Serializing CIELab to buffer

 

Hello Everyone,

I have a JPEG 2000 image with a stored CIELab color profile.

This profile is determined by 7 32 bit values.

My code currently uses LCMS to apply the profile to the image before decoding to TIFF.

I would prefer to store this color profile in the TIFF image.

I can do that if I can serialize the profile into a buffer of bytes.

I am using LCMS to apply the CIELab as follows:

        cmsHPROFILE in = cmsCreateLab4Profile(nullptr);
        cmsHPROFILE out = cmsCreate_sRGBProfile();
        cmsHTRANSFORM transform = 
            cmsCreateTransform(in, TYPE_Lab_DBL, out, TYPE_RGB_16, INTENT_PERCEPTUAL, 0);

 

and then applying the transform to each pixel.

Is there a way of serializing this profile to a memory buffer, so that I can store it in the TIFF file?

 

Thanks so much,

Aaron