sorry if this is something too simple to ask but I need help

I want to plug a dll from a fingerprint SDK into oracle

I have created library , created functions and I have run some of functions


some functions need parameters of type "array of bytes" or "array of array of bytes". I cannot create function definitions for thease functions.

for example one of functions C definition is like this

int VerifyFinger(byte [] fingerdata, byte [][] enrollData, ... , int * score);

How can I map first 2 parameters in PLSQL function definition?