voicemeeter-api-python/examples/midi/__main__.py

import logging

import voicemeeterlib

logging.basicConfig(level=logging.DEBUG)


class App:
    MIDI_BUTTON = 48  # leftmost M on korg nanokontrol2 in CC mode
    MACROBUTTON = 0

    def __init__(self, vm):
        self.vm = vm
        self.vm.observer.add(self.on_midi)

    def on_midi(self):
        if self.get_info() == self.MIDI_BUTTON:
            self.on_midi_press()

    def get_info(self):
        current = self.vm.midi.current
        print(f"Value of midi button {current} is {self.vm.midi.get(current)}")
        return current

    def on_midi_press(self):
        """if strip 3 level max > -40 and midi button 48 is pressed, then set trigger for macrobutton 0"""

        if (
            self.vm.midi.get(self.MIDI_BUTTON) == 127
            and max(self.vm.strip[3].levels.postfader) > -40
        ):
            print(
                f"Strip 3 level max is greater than -40 and midi button {self.MIDI_BUTTON} is pressed"
            )
            self.vm.button[self.MACROBUTTON].trigger = True
        else:
            self.vm.button[self.MACROBUTTON].trigger = False


def main():
    KIND_ID = "banana"

    with voicemeeterlib.api(KIND_ID, midi=True) as vm:
        App(vm)

        while cmd := input("Press <Enter> to exit\n"):
            pass


if __name__ == "__main__":
    main()