(no subject)

[wojtek.golf]

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Hello,

I'd be interested in helping with SSE optimization of digikam filters,
however, I cannot seem to find hints on your policies regarding such
development, that is whether you'd like such code have compiled
conditionally, or executed based on dynamic cpu detection, etc. If you
have already worked on such policies/requirements then they would be
of great value for me.

Thanks in advance,

Wojciech
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[Gilles Caulier-4]

Hi.

Thanks to help digiKam project.

2011/1/16 Wojciech Migda <[hidden email]>

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Hello,

I'd be interested in helping with SSE optimization of digikam filters,
however, I cannot seem to find hints on your policies regarding such
development,

about implementation, all are here :

http://websvn.kde.org/trunk/extragear/graphics/digikam/HACKING?view=markup

that is whether you'd like such code have compiled
conditionally, or executed based on dynamic cpu detection, etc.

As digiKam has an in-deep KDE dependency and as KDE has already code for it through Solid interface, i recommend to use it as well. No need to re-invent the wheel :

http://api.kde.org/4.x-api/kdelibs-apidocs/solid/html/index.html
 

If you
have already worked on such policies/requirements then they would be
of great value for me.

There is also parallelization of code to improve speed. OpenMP must be used for that...

http://openmp.org/wp/

Don't forget that digikam compile under mac and Windows. All port must work under this OS of course, or at least disabled (for ex, Openmp support for Raw decoding is disabled unde Mac due to a problem of thread interface with Openmp - macosx issue)

There are also few possible works to do on SSE support into libraw to decode RAW files, which take a while. For that, I CC Alex Tutubalin who maintain libraw (http://www.libraw.org)

Best

Gilles Caulier

 

Thanks in advance,

Wojciech
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