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lib.libusb_set_iso_packet_lengths.argtypes = [
POINTER(_libusb_transfer),
c_int
]
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lib.libusb_fill_iso_transfer.argtypes = [
_libusb_transfer,
_libusb_device_handle,
c_ubyte,
POINTER(c_ubyte),
c_int,
c_int,
_libusb_transfer_cb_fn_p,
c_void_p,
c_uint
]
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