Bypass in AU and backwards compatibility

[pflugshaupt]

As I’m dealing with bypass issues myself, I read through the thread some people were discussing how to implement getBypassParameter() which lead to the current implementation.

Bypassing a hosted plugin

I think the best way to solve these issues is that the getBypassParameter does not need to return a parameter which it exports as part of it’s getParameters list. It can just create one and keep a reference to it and return that parameter without ever adding that parameter to it’s official parameter list. However, some plug-ins may choose to do this (like the VST3 wrapper plugin). Then it’s up to the plug-in.

In the discussion it is stated it is possible to use a parameter for getBypassParameter that is not part of the plugin parameters, just to get the notifications you want to get. Maybe that’s another option you could use for AU only to avoid having two parameters visible.