Sets the delegate and a dispatch queue on which the delegate is called.
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 6.0+
An object conforming to
Item Metadata Output Push Delegate
A dispatch queue on which all delegate methods will be called.
You specify the metadata delegate, and a dispatch queue on which it will be called, to be notified as new metadata is encountered in the source media.