Welcome to the Delphi-libusb wiki!
Delphi Libusb1 Application Programming Interface (API)
This is a Header Conversion library for windows X86 and X64 which interfaces with a libusb1 Dll. This covers the various Delphi implementation of the library and provides insight into the dynamics of the USB library. The Libusb Wiki is more detailed and is the go to library for detailed information on libusb and it’s detailed functionality.
It would be far better to use the Android native library for usb interactions. Therefore the ‘LIBUSB_CALL := WINAPI ‘ is not required within the library and is replaced by the ‘stdcall’ which is a true Delphi call.