01-midi-scan.py - Scan for MIDI channels and controller numbers. — Pyo 1.0.4 documentation

Pyo 1.0.4 documentation

# 01-midi-scan.py - Scan for MIDI channels and controller numbers.

CtlScan and CtlScan2 objects are useful to find controller numbers used by your MIDI devices.

List of MIDI-related functions:

- pm_count_devices:

    Returns the number of devices found by Portmidi.

- pm_get_default_input:

    Returns the index number of Portmidi’s default input device.

- pm_get_default_output:

    Returns the index number of Portmidi’s default output device.

- pm_get_input_devices:

    Returns midi input devices (device names, device indexes) found by Portmidi.

- pm_get_output_devices:

    Returns midi output devices (device names, device indexes) found by Portmidi.

- pm_list_devices:

    Prints a list of all devices found by Portmidi.

    from pyo import *

    # Print the list of available MIDI devices to the console.
    pm_list_devices()

    s = Server(duplex=0)

    # Give the ID of the desired device (as listed by pm_list_devices()) to the
    # setMidiInputDevice() of the Server. A bigger number than the higher device
    # ID will open all connected MIDI devices.
    s.setMidiInputDevice(99)

    # The MIDI device must be set before booting the server.
    s.boot().start()

    print("Play with your Midi controllers...")

    # Function called by CtlScan2 object.
    def scanner(ctlnum, midichnl):
        print("MIDI channel: %d, controller number: %d" % (midichnl, ctlnum))

    # Listen to controller input.
    scan = CtlScan2(scanner, toprint=False)

    s.gui(locals())