public RESULT addInput(DSP target, out DSPConnection connection, DSPCONNECTION_TYPE type)
 {
     connection = null;
     IntPtr raw;
     RESULT result = DSP.FMOD5_DSP_AddInput(this.rawPtr, target.getRaw(), out raw, type);
     connection = new DSPConnection(raw);
     return result;
 }

 private static extern RESULT FMOD_DSPConnection_GetType         (IntPtr dspconnection, out DSPCONNECTION_TYPE type);

 public RESULT getType(out DSPCONNECTION_TYPE type)
 {
     return FMOD_DSPConnection_GetType(rawPtr, out type);
 }

 private static extern RESULT FMOD5_DSP_AddInput                  (IntPtr dsp, IntPtr target, out IntPtr connection, DSPCONNECTION_TYPE type);

        // Connection / disconnection / input and output enumeration.
        public RESULT addInput(DSP target, out DSPConnection connection, DSPCONNECTION_TYPE type)
        {
            connection = null;

            IntPtr dspconnectionraw;
            RESULT result = FMOD_DSP_AddInput(rawPtr, target.getRaw(), out dspconnectionraw, type);
            connection = new DSPConnection(dspconnectionraw);

            return result;
        }