On Wed, 2007-11-21 at 13:55 +0000, Erlend Davidson wrote: > > jamie wrote: > > On Wed, 2007-11-21 at 07:36 +0100, Tommaso Schiavinotto wrote: > > > >> I would like to report to the mailing list a critic enhancement > >> for dealing with RAW images files. > >> > >> I filed a bug about this. > >> > >> I don't actually know if it is the indexing or the thumbnail creation, > >> anyway having a lot of RAW images files from digital cameras, I got > >> problems > >> using tracker. > >> > >> Tracker uses a lot of memory and CPU to index (or thumbnail) RAW images. > >> > >> In fact using the 'convert' command by Imagemagick RAW images > >> are indexed (or thumbnailed) through a delegate > >> (/usr/lib/ImageMagick-6.2.4/config/delegates.xml in Gutsy Gibbon) that > >> uses the > >> following command line: > >> dcraw -w -c > >> Now this is useless both for indexing, since metadata should be > >> extracted with: > >> dcraw -i -v > >> it does not need to decode the image and it's much faster. > >> If you instead need a thumbnail using > >> dcraw -e > >> you can use the thumbnail inside the RAW file, with no need for decoding. > >> > >> In both cases it would be very fast and not memory demanding. To do this > >> you > >> should deal with RAW images as special cases and do not let convert deal > >> with > >> them. > >> > >> > > > > thanks we will investigate doing this > It's probably better to use libopenraw these days. For one it's about > 100 times faster than dcraw, and it's easier to integrate into things > (it's a library). > > http://libopenraw.freedesktop.org/wiki/ > > It should be possible to just read the metadata directly that way.
we can only use that if its in gutsy main repo (which I dont think it is) jamie _______________________________________________ tracker-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/tracker-list
