phatch-dev team mailing list archive

[Stani <spe.stani.be@xxxxxxxxx>]

Hi,
Just a quick reminder, there is already a blueprint on multiprocessing
filed here:
https://blueprints.launchpad.net/phatch/+spec/multiprocessing-support

I will add my notes from the previous mail there.

So if someone wants to work on multiprocessing, it would be good to
get the author of the blueprint involved. Phatch needs more
developers, so try all you can to get him on board!

Best regards,
Stani

On Wed, Jun 10, 2009 at 5:23 PM, Stani<spe.stani.be@xxxxxxxxx> wrote:
> Hi Erich,
>
> Thank you so much for writing Erich for contributing your first action
> "Variable Border". I got bugged by many users for such an action, so I
> am pretty sure they'll be happy now. Erichs border action will now
> replace the old border action since the crop action and the variable
> border action provide the same functionality and much more. If anyone
> objects to this, I like to hear.
>
> I corrected the description to "Draw border inside or outside". It is
> a bit cryptic, but the criterion is that it should fit into the add
> actions dialog. As a rule of thumb I'd like to keep the English
> description even a bit shorter, as translations in other languages
> tend to be larger. Also for pixel values, PixelFields should be used.
> Please have a look at how I updated the values() method so percentages
> are calculated correctly. (Nadia, this is also interesting for you in
> case you would not know this yet.) So Erich, you need to merge from my
> branch (> rev 733).
>
> Writing an action seems to be the entry procedure for becoming a
> Phatch developer ;-)
>
> Erich, please let us know what you like to work on next. It is of
> course the most efficient to propose features you have knowledge and
> time to work on yourself. My main (future) focus for Phatch
> development is image manipulation, integrating other applications
> (such as imagemagick, dcraw, ...) and user interface. But of course I
> will be very happy to any proposed contribution and guide anyone
> through the Phatch code.
>
> For example, if you want to work on multiprocessing, you'll have to
> refactor core/api.py and evaluate if it is more efficient to share the
> cache or each process has its own cache. In case of the shared cache
> dictionary take in account that some data it contains is not pickable,
> mainly PIL Image objects. Or maybe it would be a good idea to have two
> caches: a shared one, which contains eg a gps timedict, and an non
> shared one, which contains eg large images. Maybe you want to work on
> something else, which is fine as well. In case you consider
> multiprocessing for speed increase, I guess Phatch could use some
> profiling as well as its code is not optimized for speed. My main
> focus is that "it just works(TM)" out of the box, stability and a
> polished UI. So some aspects of Phatch are very speed inefficient,
> which because of lack of time I leave to anyone who likes to work on
> it. For example at every start, Phatch imports all actions and scales
> all icons from wxPython->PIL (antialias) -> wxPython for the smaller
> icons in the tree view. Probably it would be better to cache the icons
> at the right sizes. The icons rescaling of course happens only when
> Phatch is launched as a GUI, but even in server mode all actions are
> imported, while probably it would be better to import only those which
> are in the action lists. Of course to know the bottlenecks Phatch has
> to be profiled. When Nadia asked me if I was not curious to profile
> Phatch as it is so easy to do, I answered that indeed I would be very
> curious if someone else profiles Phatch.
>
> My golden rule is that everyone should works on what he finds fun,
> with the sole exception of maintaining your contributed code (fixing
> bugs, writing documentation, ...). The nice thing is that your fun
> will be passed to many users and bring in new users.
>
> Welcome to the team!
>
> Stani
>
> --
> Phatch Photo Batch Processor - http://photobatch.stani.be
> SPE Python IDE - http://pythonide.stani.be
>



-- 
Phatch Photo Batch Processor - http://photobatch.stani.be
SPE Python IDE - http://pythonide.stani.be