When called by a host application, gets MIDI data from an audio unit.
- iOS 11.0+
- macOS 10.12+
- Mac Catalyst 13.0+
- tvOS 11.0+
If you named your callback function
MyAUMIDIOutputCallback, you would declare it like this:
When called by the system, provides audio transport state and timeline information to an audio unit from a host application.