What is the recommended way to get data out of a C...

# kotlin-native

[Trey]

What is the recommended way to get data out of a CArrayPointer after it has been passed to a C library and filled with data? This snippet works, but feels wrong.

val opusOutData = allocArray<opus_int16Var>(outputLen)
// pass CArrayPointer to C library to be filled
...
// Pull the new data out of the CArrayPointer to be used?
return (0 until outputLen).map { opusOutData.get(it) }.toTypedArray()

[Jeff Lockhart]

You can just pass a pointer to the ByteArray itself to fill in C. Then you don't need to copy the memory.

val byteArray = ByteArray(outputLen * sizeOf<opus_int16Var>())
byteArray.usePinned {
    // pass it.addressOf(0).reinterpret<opus_int16Var>() to C library to be filled
}
return byteArray

[Trey]

Thanks for the advice Jeff! I think that is much cleaner.