[Feature Request] Mechanism for specifying the curve from host

[jansol]

I would like to use Wolf Shaper to emulate a tube preamp (distortion & soft clipping) in pipewire's filter-chain module, but this means I won't have access to the GUI and can only specify plugin parameters via the pipewire config file. FWIW I'd be using the LV2 version of the plugin.

[pdesaulniers]

Hello! I'm not familiar with pipewire's filter-chain (and my memory about the LV2 format is pretty fuzzy at the moment :))

Does filter-chain support presets? Perhaps you could export some presets using a different host (say, jalv) and load them using filter-chain?

Otherwise, I think the graph is currently saved and restored using LV2 state. Perhaps there is a way to set the plugin state from your host? Internally, the graph is represented as a string of hexfloat values. You would probably need to use a different host in order to generate a proper state string.

In any case, from a UX perspective, I think it would be a bit impractical to expose the graph nodes as 'regular' parameters, since it would require quite a lot of parameters :)