AAX Plugin channels options

Audio Plugins
1

I can build plugins succesfully in AAX format, yet if I open protools I see way too many options for either mono or stereo, for example:

my_plugin (stereo)
my_plugin (stereo/LCR)
my_plugin (stereo/Quad)
my_plugin (stereo/1st Order Ambience)
my_plugin (stereo/2nd Order Ambience)
…etc

For the other plugins, pro tools is smart enough to only show me the one version suited for my current track settings, why is this?

2

These are the options I would expect to see in something like an upmixer, which declares it will take a mono/stereo input and output extra channels (increasing the output channel count). I would think it’s down to the AudioProcessor::BusesProperties in the Processor constructor.

1 Like
3

The constructor is just a default.
This list is the result of a negotiation between the host and your plugin. You specify in isBusesLayoutSupported() which combination your plugin is able to handle by returning true or return false if it can’t.

2 Likes
4

Thanks @daniel !! that function was exactly what I needed! :+1:

1 Like