Midi Ports Changes

MidiPortsChangedIn

MidiPortsChangedIn()

Bases: Input

MIDI ports change watcher. Produces base Msg objects.

Used as a service port for Restart on new MIDI port found GUI option.

is_enabled

is_enabled: bool

True if port is listening and generating messages

calls

calls: list[None | tuple[tuple, dict], list[SubscribedCall]]

Message match arguments and callables that will be called with matching incoming messages. None conditions matches any message.

refresh_rate_sec

refresh_rate_sec: float = 1

MIDI ports polling rate in seconds

subscribe

subscribe(
    *msg_matches_args: None | Container[Any] | Any,
    **msg_matches_kwargs: (str, None | Container[Any] | Any)
) -> Callable

Decorator to subscribe a callable to the input's messages.

Decorator without arguments subscribes a callable to all the input's messages.

Decorator with arguments subscribes a callable to the input's messages that match conditions set by arguments. It works the same way as message's matches method:

1. If condition is None or omitted it matches anything.

2. If condition equals attribute it matches the attribute.

3. If condition is a container and contains the attribute it matches the attribute.

Examples

1. Calls function for all MIDI port's messages:

   @midi_input_instance.subscribe
   def function(msg: MidiMsg) -> None:
       pass
   

2. Calls function for OSC messages from specific address:

   @osc_input_instance.subscribe(address='/live/song/get/track_data')
   def function(msg: OscMsg) -> None:
       pass
   

3. Call object instance method for MIDI port's "note on" and "note off" messages:

   midi_input_instance.subscribe((MidiType.NOTE_ON, MidiType.NOTE_OFF))(object.method)
   

Returns:

• Callable –

  Subscribed callable.