pyTivo Discussion Forum

tlc · Joined: 05 Jan 2008 Posts: 13

There's a caching bug in the photo module. The exif date is needed for the QueryContainer, but not retrieved and cached until send_file.

This results in the "Taken:" field on the Photo page showing as "unknown" unless you force resending of the Container by scrolling up or down on the Photos page or exiting and re-entering the Photos page.

-tlc

wmcbrine · Joined: 04 Jan 2008 Posts: 514

It's not a bug, just a limitation. (Documented, too -- at least in the original photo plugin thread on TCF.)

I could rewrite it so that the dates are available at QueryContainer time, but I doubt that it would be worthwhile. I'll think about it...

Edit: I'm still not liking it. Basically, I'd have to load each uncached image on a new page (four to twelve) just to get the date, and then throw them away, loading them again when it was time to generate the thumbnails -- because there's no way to tell what size the icon should be until it's requested. Which also means a separate cache just for the dates. Or else I'd have to cache the full 4-12 images until the icons were generated (i.e., quite a lot of memory) -- currently only one full image is ever loaded at a time (which can still be several megs).

tlc · Joined: 05 Jan 2008 Posts: 13

I understand not wanting to read the image twice.
FWIW, EXIF.py (http://sourceforge.net/projects/exif-py/) appears to read just the image headers to get the EXIF details.

-tlc