Comment 3 for bug 1429331

A number of controllers have this feature and at least the Traktor Kontrol X1 has separate encoders for each deck. I think a default loop size setting per deck would be helpful so this does not need to be reimplemented for each controller. It wouldn't necessarily need scripting, just mapping a signal to adjusting the default loop size and another to setting a loop.

Some controllers (Traktor Kontrol X1 comes to mind) have a way to display the selected loop length on the controller. On such devices, displaying the loop length could be implemented in a controller script by sending a signal back to the controller.