Now I understand a bit better. An error message and an hint in the
documentation will shurely be very welcome.

Thanks for Your explanation. It helps a lot.

kind regards
Kai-Uwe


Am 11.08.04, 16:20 +0200 schrieb Marti Maria:

>
> Ok, got it. Problem is the usage of _cmsSaveProfileToMem, which
> I assumed would be the last operation just before closing the profile.
> I really never intended to reuse a profile after it has been saved, so,
> since this function was doing side effects, I used a "_" as a mark of
> "internal function".
>
> There are other combinations that doesn't work too. For example,
> if you open a disk profile h = cmsOpenProfileFromFile(... etc.) you
> cannot save this profile by using _cmsSaveProfile(). It doesn't work
> because once you read the profile, some decoding is done in a lousy
> way. For example, a profile can store a curve as a single gamma
> exponent, say 2.2. Once cmsOpenProfileFromFile() opens it, this
> parametric curve is translated to a table, and the information about
> the original encoding is lost. The difference between a 2.2 number
> and the expanded table may be about 30K, enough to make
> embedded profile not suitable at all.  v4 profiles makes this problem
> even worst.
>
> Of course this may be regarded as a bug... So, I will try to either
> document this behavior,  fix it in a way you could reuse the
> profile or at least issue a clear error message. There is a lot of room
> for improvement in that direction. I guess you want this for embedded
> profiles right? But then be careful because any disk based profile
> opened by cmsOpenProfileFromFile() will NOT work with
> _cmsSaveProfile()/_cmsSaveProfileToMem() Sorry,
> but current version does allow to read or to create profiles but not
> both at same time.
>
>
> Regards,
> Marti Maria
> The little cms project
> http://www.littlecms.com
> [EMAIL PROTECTED]
>
>
>
>
>
>
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Mit freundlichen Grüßen

Kai-Uwe Behrmann
                                + Bildprogrammierung / Panoramen
                                + Farbmanagement
                                + email: [EMAIL PROTECTED]





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