[Openicc] RFC about a new library

[Marco Oman]

No, strongly types means that the transform is not an opaque handler that
operates on untyped buffers, but a C++function object.
So if the ICC profile is a XYZ -> RGB transform (from PCS2device) then the
library build a function that accepts a struct xyz_t and yelds an rgb_t (or
more precisely, a rgb_t<double>). In brief transforms have type.

Here:

https://libiccpp.wordpress.com/2015/02/04/first-building-blocks-functions/

you get some more info about what I mean. The library defines a set of
function between color spaces, then ICC profiles (or transforms generated
from them) are instances of those functions.

  Regards,
  Marco

On 24 February 2015 at 10:55, Kai-Uwe Behrmann <ku.b-list at gmx.de> wrote:

> Am 18.02.2015 um 21:22 schrieb Marco Oman:
> > I am writing here to ask you to give a look at a library I developed
> > recently that aims at working with ICC profiles in a 'strongly typed'
> way.
>
> Strongly typed as in the ICC hash ?
>
> (from ICC.1:2010)
> 7.2.18Profile ID field (bytes 84 to 99)
>
> This field, if not zero (00h), shall hold the Profile ID. The Profile ID
> shall be calculated using the MD5 fingerprinting method as defined in
> Internet RFC 1321. The entire profile, whose length is given by the size
> field in the header, with the profile flags field (bytes 44 to 47, see
> 7.2.11), rendering intent field (bytes 64 to 67, see 7.2.15), and
> profile ID field (bytes 84 to 99) in the profile header temporarily set
> to zeros (00h), shall be used to calculate the ID. A profile ID field
> value of zero (00h) shall indicate that a profile ID has not been
> calculated.
>
> It is suggested that profile creators compute and record a profile ID.
>
> kind regards
> Kai-Uwe
>
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