Carla
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falkTX
Feature Request: Make Carla's Dry/Wet and Volume controls MIDI-mappable
I would like to switch an effect in the chain on or off (bypass) using a MIDI controller. I have been able to use several mixer plugins to emulate it but it is cumbersome and complicates the Carla patch a lot. It would be great if the Volume and Dry/Wet controls in Carla were MIDI-mappable. Perhaps there is a way to do it and I haven't found it?
volume, pan and dry/wet have a pre-defined CC. volume is well, volume pan is pan.. dry/wet is CC 10, 'breath'
the "midi control channel" parameter controls what channel those CCs will listen to.
I need to make those pre-defined mappings readable somewhere on the GUI. Maybe make them user changeable?
Yay, that's great news! Now I understand what the midi control channel thing is for :) I'm so used to applications using custom mappings, I didn't think anyone uses the predefined ones. Yes, an option to change these mappings would be great I think. Maybe on the same dialog as the midi control channel selector.
CC10 is Pan, Breath is CC 2. From my tests, the mapping in Carla is:
CC 2 Breath Controller = Dry Wet CC 7 Volume = Volume CC 8 Balance = Left/Right
IMO, CC 10 pan would be more appropriate for Left/Right and CC 8 Balance for Dry/Wet. all controller mappings are a bit arbitrary, though. But using CC 2 Breath for Dry/Wet is definitely weird.
ah yes, it's balance not pan. this is because the current pan/balance control is actually stereo-balance and not straight panning. (my plan was to expose both methods and let the user chose its preferred one, but it keeps getting postponed) the CC 8 for balance has to remain to make it possible to use CC 10 later on without conflicts.
CC 2 (breath) for dry/wet is weird indeed, but MIDI has nothing specific for this..
BTW, there doesn't seem to be way to set Left/Right to equal power via MIDI. CC 8 value 63 is a bit biased to the left and value 64 is a bit biased to the right. At least the GUI knobs seem to indicate so.
Why would you bind breath to that... and hardcode it...
I don't know either and since I'm using a breath controller it complicates things and I have to work around this issue. I'd love to see it fixed because the implementation at the moment doesn't make sense to me.
Same, I also use a breath controller (an EWI) and that thing tripped me up. Lol.
