Support for multiple inputs plugins

[spolezhaev]

Hello! Thank you for the great library.

Are there any plans to support plugins with multiple inputs, such as for sidechain compression?

[psobot]

Hi @spolezhaev!

That's not currently on the roadmap, but wouldn't be too hard to add - the process method of ExternalPlugin would need to be overloaded to take in multiple input buffers, and multi-input plugins would not be supported as part of Pedalboard objects/chains. (Adding that would also be possible, but that's a significant API overhaul that I'm not sure how to design just yet.)

Do you have an example of such a plugin that could be used for testing?

[spolezhaev]

Thanks for the info!

As an example, you can use RoughRider3, a free compressor plugin. It has sidechain input which is the second input of the plugin.

[dodeca-6-tope]

@spolezhaev did you figure it out? I'm also interested in using external plugins with multiple inputs.