pub unsafe extern "C" fn MIDIInputPortCreateWithBlock(
client: MIDIClientRef,
portName: CFStringRef,
outPort: *mut MIDIPortRef,
readBlock: MIDIReadBlock,
) -> OSStatuspub unsafe extern "C" fn MIDIInputPortCreateWithBlock(
client: MIDIClientRef,
portName: CFStringRef,
outPort: *mut MIDIPortRef,
readBlock: MIDIReadBlock,
) -> OSStatus