[Digikam-users] tags, rating and comments in TIFF files

[Piotr Tarnowski]

Finally,

I've made a patch to digiKam (and added it to 
http://bugs.kde.org/show_bug.cgi?id=134486) which stores in JPG files 
iptc and exif data when storing in original file is not supported (TIFF, 
RAW, read-only).
Personally use it for TIFF files.
When you move or rename original file you must remember to rename 
alternate to.

/Piotr

Dnia 22-10-2007 o godz. 9:48 Gilles Caulier napisał(a):
>
>
> 2007/10/22, Arnd Baecker <arnd.baecker at web.de>:
>
> Piotr, Using libtiff to write metadata is not the right way . Libtiff 
require to rewrite the full image, not to set only tags in metadata 
section of file.
>
>
> Note : Coments, rating, etc are already writed in TIFF file when you 
save image from Editor... But of course this is not yet done in fly like 
with JPEG from Album view.
>
> >
> > digikam uses exiv2 to access and write meta-data.
> > Support for tiff is being worked on (see http://www.exiv2.org/),
> > but I don't know the current status.
> TIFF writing IO with Exiv2 will be the next job to do . Currently, XMP 
is the main task for next Exiv2 release
> 0.16 planed to December. TIFF writing mode is temporaly stopped.
>
> Few developement have been already done but not yet finalized...
>
> >
> > So to me it seems that for a proper solution to
> > the problem you discuss, it should be done on the level of exiv2.
> >
> > Gilles, and Andreas will be able to give a more detailed account on this,
> > but I would suggest to get Andreas Huggel's from exiv2 opinion first,
> > before you start hacking ;-)
> Andreas is not in this room, only in digikam-devel ML. You can contact 
him directly at "ahuggel at gmx dot net" or using Exiv2 ML
>
>
> > I am sure that contributions are very welcome!
> yes TIFF writting mode is very important for the future
>
>  Gilles
>

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