2014-05-08 15:17 GMT+03:00 Tobiasz Karoń <[email protected]>:
> Once I tried a few LADSPA plugins in Ardour and LMMS I've noticed big
> differences in how they work and look like in these two hosts.
>
> LMMS isn't complete when it comes to LADSPA specification and features.
>
> 1. Combo switches
>
> Steve Harris' Impulse Convolver is the perfect example - in Ardour you can
> read all the different options to choose - in LMMS it is just a knob with
> meaningless numbers. How would Dual Filter look like if the combo boxes
> were replaced by knobs? Don't answer :
>
That's because there is nothing in the LADSPA specification itself about
metadata. What you see in Ardour is a separate addition that gets RDF
metadata for the plugins from XML files (just look at
/usr/share/ladspa/rdf/). A quick search around the internets brings up LRDF
<https://github.com/swh/LRDF> that seems to be used by Ardour for this
purpose.
RDF (in a different syntax) is a core part of LV2.
2. Feedback meters
>
> Almost every compressor or limiter will tell you what is the current gain
> reduction applied, so you can aid your knob-twisting and hearing. SC4 does
> that too, but LMMS doesn't display this data to the user, severely limiting
> the plugins' usability. I know it is best to use our ears - bit for some
> reason we use computer screens to make music too ;)
>
Indeed, LMMS does not (yet?) expose control out ports of LADSPA plugins.
> I think even before we get on the LV2 plugins format, we still have some
> work to do in the LADSPA field first.
>
> What do you think? How hard could these two be to implement?
>
In theory all that's needed is to use LRDF (or equivalent) in the LADSPA
support code to read the metadata, and extend the LadspaControlView class
to represent all the new stuff.
2014-05-08 15:17 GMT+03:00 Tobiasz Karoń <[email protected]>:
> Once I tried a few LADSPA plugins in Ardour and LMMS I've noticed big
> differences in how they work and look like in these two hosts.
>
> LMMS isn't complete when it comes to LADSPA specification and features.
>
> 1. Combo switches
>
> Steve Harris' Impulse Convolver is the perfect example - in Ardour you can
> read all the different options to choose - in LMMS it is just a knob with
> meaningless numbers. How would Dual Filter look like if the combo boxes
> were replaced by knobs? Don't answer :D
>
> 2. Feedback meters
>
> Almost every compressor or limiter will tell you what is the current gain
> reduction applied, so you can aid your knob-twisting and hearing. SC4 does
> that too, but LMMS doesn't display this data to the user, severely limiting
> the plugins' usability. I know it is best to use our ears - bit for some
> reason we use computer screens to make music too ;)
>
> * * *
>
> I think even before we get on the LV2 plugins format, we still have some
> work to do in the LADSPA field first.
>
> What do you think? How hard could these two be to implement?
>
>
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