Function LIBMTP_GetPartialObject 

pub unsafe extern "C" fn LIBMTP_GetPartialObject(
    arg1: *mut LIBMTP_mtpdevice_t,
    arg2: u32,
    arg3: u64,
    arg4: u32,
    arg5: *mut *mut c_uchar,
    arg6: *mut c_uint,
) -> c_int