[Digikam-users] Fwd: GPS data for raw files in xmp sidecar

[Gilles Caulier]

2008/4/16, Marcel Wiesweg <marcel.wiesweg at gmx.de>:
> > - XMP sidecar is now supported.
>  > - Photoshop PSD file (read only : Exif/IPTC/XMP extraction supported.)
>  > - JPEG200 file (read only : Exif/IPTC/XMP extraction supported... but
>  > who use it (:=))))
>  > - GIF (read only image info only)
>  > - TGA (read only image info only)
>  > - BMP (read only image info only)
>
>
> Cool, that's enormous progress!
>
>
>  > >  About TIFF writting support : no idea yet. I CC Andreas to have more
>  > > info...
>  >
>  > (private email - i think i'm not on the dk-users list)
>  >
>  >  This morning I checked in a large update to exiv2/branches/unstable
>  >  (where the tiff write support is being developed) which merges
>  >  everything from the trunk to that branch.
>  >
>  >  In other words, the dust is off, work can re-start. It's what i'm doing
>  > now.
>
>
> And that's even better
>
>
>  >
>  > Marcel, PSD support in digiKam is very important. we only support 8
>  > bits color depth, using QT image loader. We need a dedicated DImg
>  > image loader to support 16 bits color depth.
>  >
>
>
> Is there a support library like for the other image formats? I think Gimp etc.
>  support the format, so there should be code somewhere?

Unforget than gimp do not support 16 bits color depth. So gimp PSD
image loader lack several informations.

Also, the only relevant code that you can found over the web come from
reverse engineering. Only old Photoshop 7.0 PSD format exist as well.
After this version adobe has
closed SDK and reversing code become really complex. Look comments
from Boud on dot.kde.org:

http://dot.kde.org/1208320878/1208328042/1208330128/

I think ImageMagick loader is fine to implement something in digiKam core :

http://www.imagemagick.org/viewvc/bin/cgi/viewvc.cgi/svn/ImageMagick/trunk/coders/psd.c?view=markup