Function IOUSBGetEndpointSynchronizationType 

pub unsafe extern "C-unwind" fn IOUSBGetEndpointSynchronizationType(
    descriptor: *const IOUSBEndpointDescriptor,
) -> u8

Available on crate features AppleUSBDescriptorParsing and objc2-io-kit only.

Extract the synchronization type of an endpoint from an endpoint descriptor

This method parses an endpoint descriptor to determine its synchronization type. Only Isochronous endpoints have non-zero synchronization types

Parameter descriptor: The descriptor to parse

Returns: tEndpointSynchronizationType indicating the type found.

Safety

descriptor must be a valid pointer.