Called by the system when the value of a specified audio unit property has changed.
- iOS 10.0+
- macOS 10.12+
- Mac Catalyst 13.0+
- tvOS 10.0+
Custom data that you provided when registering your callback with the audio unit.
The audio unit upon which the specified property value has changed.
The property whose value has changed.
The scope of the property whose value has changed.
The element ID on the scope of the property whose value has changed.
A result code.
If you named your callback function
My, you would declare it like this:
You register your
Audio callback function using the