Calligra licensing and copyright bits

[Boudewijn Rempt]

On Thursday 23 October 2014 Oct 23:17:48 Raúl Sánchez Siles wrote:
> Color profiles (ICC, ICM)
> ===================
>   We're concerned about license for these profiles. 

It's difficult indeed to figure out where these come from, given that's it more than ten years ago that they were added... The reason we keep getting queries about these profiles is that the place where we got them no longer exists. scarse.org is gone and littlecms.com no longer hosts the profiles.

>   In some cases, neither
> licensing nor copyright is clear. Metadata is helpful, but not enough.
> Public domain profiles are ok, but there must be a way to verify it. For
> instance: download url where the authorship/license is stated.
> 
>   If color profiles (as binary file) are generated from a human readable
> source, then having source (with licensing information) would be helpful as
> well.

No, that's not the case, there is no source code for these files.

> 
>   Note: I used iccdump from debian package argyll to get profile metadata.
> (argyll package is https://packages.debian.org/sid/argyll )
> 
> krita/data/profiles/WideGamut.icm (No copyright)
> krita/data/profiles/sRGB.icm (No copyright)
> PROPOSAL: verify authorship and licensing of these files.

It's too long ago to be able to do that. I'll just remove them and count on users installing profiles themselves. They are also so old that they probably aren't much good, judging from Elle Stone's blog: http://ninedegreesbelow.com/photography/are-your-working-space-profiles-well-behaved.html

> 
> krita/data/profiles/scRGB.icm (© Cyrille Berger)
>   Verified. For instance: 
>   http://commits.kde.org/calligra/d97b7d6a5e46c057f6660cd76409b2eb62943612
> PROPOSAL: If assessment is correct, no further action.
> 
> krita/data/profiles/krita25_lcms-builtin-sRGB_g100-truegamma.icc (No copyright, 
> use freely)
>   Included in http://commits.kde.org/calligra/b0d83bbb35b5 mentioning an 
> email. Is that email public?
> PROPOSAL: verify authorship and licensing of this file.

The commit doesn't mention an email, it gives contact information for the author of the profile. Elle is the author.

> 
> plugins/colorengines/lcms2/colorprofiles/data/fogra27l.icm (public domain)
>   According to metadata, profile is public domain, yet the origin is needed for 
> verification.
>   References:
>   - Addition of the profile in koffice:
> svn://svn.kde.org/home/kde/trunk/koffice/libs/pigment/colorprofiles/data/fogra27l.icm@1069457
>   - Rename of the same profile in scribus (where it has been presumably taken)
>     svn://scribus.net/trunk/Scribus@6750
> PROPOSAL1: verify authorship and licensing of this file.
> PROPOSAL2: fogra27l is superseded by fogra39l, according to 
> http://alturl.com/ztw34 (should take to fogra.org website). Using fogra39l 
> would lead to the same situation. See also http://www.color.org/fogra39.xalter
> PROPOSAL3: switch to a verified free profile.

This profile has been removed in git master.

> 
> plugins/colorengines/lcms2/colorprofiles/data/CMY.icm (copyright Sun 
> Microsystems, 1996)
>   This is very problematic. Debian packages can't ship this file without 
> clarifying licensing which I couldn't find anywhere.
>   Added in 
> svn://svn.kde.org/home/kde/trunk/koffice/krita/data/profiles/CMY.icm@365801
> PROPOSAL1: verify authorship and licensing of this file.
> PROPOSAL2: switch to a verified free profile. Here is a public domain, generic 
> CMYK:
>        http://www.argyllcms.com/cmyk.icm (see also 
> http://sourceforge.net/p/lcms/mailman/message/32755884/ )
> 

This profile has been replaced in git master by Greame's profile.

In general, it's probably a good idea for linux distributions to make Krita depend on argyll and openicc's profile packages. (I'm not sure if those are separate in Debian, I'm an opensuse user). For my windows builds, I'll just package those as well.
-- 
Boudewijn Rempt
http://www.valdyas.org, http://www.krita.org