I agree that doing this in the code is not wanted for the first step.
As I wrote, my basic need is to have standalone executable *translating
darktable XMP files* in clear operations parameters in both ways.
The interpolation is clearly the final goal, but is not hard if you can
translate easily modules parameters in XMP file.
I've write some scripts using bash and octave doing this kind of job on
luminosity to deflicker my timelpase but on JPG only...
Thanks for your answers, I hope that somebody with development skill could
helm me to do this external tool based on src/iop :-)
Alexandre
2013/8/25 Tobias Ellinghaus <h...@gmx.de>
> Am Sonntag, 25. August 2013, 12:51:53 schrieb Alexandre Jullien:
> > Hello everybody,
>
> Hi.
>
> [modifying iop params from outside the module]
>
> this is something I wanted to do for quite some time, however it requires
> some
> means of introspection to make sense of the module params. This would
> probably
> require some new API so that modules could decode their binary params blob.
> Doing it directly in code would be quite messy and prone to break whenever
> anything gets changed. It would also require us to invent some data format
> to
> convert the params to/from.
>
> My hope is that some day™ LUA will be able to access the parameters of
> modules. Then we could write small scripts (maybe some day even with a GUI)
> that can interpolate between the parameters of two images over a whole set.
> But until that happens the only hope would be to write a small external
> tool
> that directly uses the struct definitions from the files in src/iop/* and
> breaks
> whenever these are changed.
>
> TL;DR: would be nice but is hardly possible.
>
> > Alexandre (Toulouse (31) / France)
>
> Tobias
>
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