Settings View Source Midiex.MidiNotification (Midiex v0.6.3)

A struct representing notifications of MIDI changes.

This is currently only implemented on MacOS and is capturing added or removed messages only (e.g. a device or port has been added or removed).

An example use of this is for hot swapping of devices, responding to if a device has been added or removed.

The main fields are:

• notification_type: which is of type :added or :removed
• name: which is the same as the port name used in %Midiex.MidiPort{}
• direction: which is the same as the port direction used in %Midiex.MidiPort{}.

Additionally, the following fields have been included from coreaudio (MacOS):

• parent_name: which may or may not be the same as the name: field above
• parent_type: the 'parent type' reported by coreaudio, often :entity
• parent_id: the unique numerical ID reported by coreaudio for the parent
• native_id: the unique numerical ID reported by coreaudio for the port

example

Example

# KeyStep Pro keyboard has been hot-plugged into the Mac:
%Midiex.MidiNotification{
  notification_type: :added,
  parent_name: "KeyStep Pro",
  parent_id: 1384647386,
  parent_type: :entity,
  name: "KeyStep Pro",
  native_id: 493507367,
  direction: :input
}
%Midiex.MidiNotification{
  notification_type: :added,
  parent_name: "KeyStep Pro",
  parent_id: 1384647386,
  parent_type: :entity,
  name: "KeyStep Pro",
  native_id: 2688501783,
  direction: :output
}

# KeyStep Pro keyboard has been unplugged into the Mac:
%Midiex.MidiNotification{
  notification_type: :removed,
  parent_name: "KeyStep Pro",
  parent_id: 1384647386,
  parent_type: :entity,
  name: "KeyStep Pro",
  native_id: 493507367,
  direction: :input
}
%Midiex.MidiNotification{
  notification_type: :removed,
  parent_name: "KeyStep Pro",
  parent_id: 1384647386,
  parent_type: :entity,
  name: "KeyStep Pro",
  native_id: 2688501783,
  direction: :output
}