[LAD] [ann] CAPS 0.4.5

Philipp Überbacher hollunder at lavabit.com
Mon Mar 28 21:27:53 UTC 2011

Excerpts from Stefano D'Angelo's message of 2011-03-28 22:59:46 +0200:
> 2011/3/28 Tim Goetze <tim at quitte.de>:
> >>> I'm planning to add a mode switch (low- or bandpass) to the AutoWah
> >>> instead of making a separate new plugin, or would that be a stupid
> >>> idea?
> >>
> >>For compatibility with LV2, it's better if you create a new plugin for that...
> >
> > I don't see how compatibility with LV2 is a concern here?
> Heh... long story short: LV2 uses URIs, LADSPA uses UniqueIDs (not
> necessarily but...), two LV2 plugins with same URI are required to
> have the same "port signature" (i.e., ports) and I wrote a LADSPA to
> LV2 bridge where the URIs of the bridged plugins are in the form
> urn:ladspa:xxxx, where xxxx is the UniqueID.
> This means, if you change the port signature and maintain the same
> UniqueID, we would have incompatibilities in the LV2 world. If you
> create a new plugin or don't touch ports, instead, everything's fine.
> Stefano

I'd say you'd even have incompatibilities in LADSPA world. Even fixes in
LADSPA plugins would sometimes need a new ID (This was discussed a while
ago regarding a LADSPA that has an unintuitive port order).

More information about the Linux-audio-dev mailing list