Wrapping output byte array pointer?

[Vatuu]

So I am trying to wrap a small library into a python module, but I am struggling to understand how to wrap array pointers.
The function in question being void decodeSector(u8 channel, bool largeSamples, const u8 *input, s16 *output); where input is the pointer to a incoming byte array, and output is the pointer to the receiving array. Now, since input is read only I am pretty sure I can just use pybind11::bytes and cast to a byte pointer, but I am at a loss for the outgoing array. So what is the ideal approach for a situation like this?