FMOD.DSP.getUserData C# (CSharp) Method

        public RESULT getUserData               (out IntPtr userdata)
        {
            return FMOD_DSP_GetUserData(rawPtr, out userdata);
        }

    unsafe public static FMOD.RESULT ReadAudioData(ref FMOD.DSP_STATE dspState, IntPtr inbuffer, IntPtr outbuffer, uint length, int inchannels, ref int outchannels)
    {
        FMOD.DSP dspInstance = new FMOD.DSP(dspState.instance);

        float *inb  = (float *)inbuffer.ToPointer();
        float *outb = (float *)outbuffer.ToPointer();

        IntPtr userData;

        // NOTE: Without this check, Unity crashes!
        if (dspInstance.getUserData(out userData) == FMOD.RESULT.OK)
        {
            float *userBuffer = (float *)userData.ToPointer();

            // TODO: See if there is a better way to do this.
            // Just copy back.
            for (uint samp = 0; samp < length; samp++)
            {
                /*
                 * Feel free to unroll this.
                 */

                // TODO: There are at least 2 channels, what do we do?
                // Do we save the maximum, the average?
                userBuffer[samp] = inb[(samp * inchannels)];

                for (int chan = 0; chan < outchannels; chan++)
                {
                    long outIdx = (samp * outchannels) + chan;
                    long inIdx  = (samp * inchannels) + chan;

                    float value = inb[inIdx];

                    outb[outIdx] = value;
                }
            }
        }

        return(FMOD.RESULT.OK);
    }