internal override bool SetDVBS2Parameters(TuningSpec tuningSpec, IBaseFilter tunerFilter, ITuneRequest tuneRequest)
        {
            if (!dvbs2Capable)
            {
                return(true);
            }

            IBDA_DigitalDemodulator demodulator = FindDemodulator("Hauppauge", tunerFilter);

            if (demodulator == null)
            {
                Logger.Instance.Write("Hauppauge DVB-S2 handler: Demodulator not located");
                return(false);
            }

            ModulationType modulationType = ModulationType.ModNotSet;

            switch (tuningSpec.Modulation)
            {
            case Modulation.QPSK:
                BinaryConvolutionCodeRate codeRate;
                reply = demodulator.get_InnerFECRate(out codeRate);
                if (reply != 0)
                {
                    Logger.Instance.Write("Hauppauge DVB-S2 handler: Get FEC rate failed error code 0x" + reply.ToString("X"));
                    return(false);
                }

                if (codeRate == BinaryConvolutionCodeRate.Rate9_10)
                {
                    modulationType = ModulationType.Mod32Qam;
                }
                else
                {
                    if (codeRate == BinaryConvolutionCodeRate.Rate8_9)
                    {
                        modulationType = ModulationType.Mod16Qam;
                    }
                    else
                    {
                        modulationType = ModulationType.ModBpsk;
                    }
                }
                break;

            case Modulation.PSK8:
                modulationType = ModulationType.ModNbc8Psk;
                break;

            default:
                break;
            }

            if (modulationType != ModulationType.ModNotSet)
            {
                reply = demodulator.put_ModulationType(ref modulationType);
                if (reply != 0)
                {
                    Logger.Instance.Write("Hauppauge DVB-S2 handler: Set Modulation Type failed error code 0x" + reply.ToString("X"));
                    return(false);
                }
                else
                {
                    Logger.Instance.Write("Hauppauge DVB-S2 handler: Modulation type changed to " + modulationType);
                }
            }
            else
            {
                Logger.Instance.Write("Hauppauge DVB-S2 handler: Modulation type not changed");
            }

            IntPtr commandBuffer  = Marshal.AllocCoTaskMem(1024);
            IntPtr instanceBuffer = Marshal.AllocCoTaskMem(1024);

            SatelliteFrequency frequency = tuningSpec.Frequency as SatelliteFrequency;

            string setting;

            if (frequency.SymbolRate != 30000)
            {
                Marshal.WriteInt32(commandBuffer, (int)DsUtils.GetNativePilot(frequency.Pilot));
                setting = frequency.Pilot.ToString();
            }
            else
            {
                Logger.Instance.Write("Hauppauge DVB-S2 handler: Setting pilot to off for symbol rate of 30000");
                Marshal.WriteInt32(commandBuffer, (int)DirectShowAPI.Pilot.Off);
                setting = "Off";
            }
            reply = propertySet.Set(bdaTunerExtensionProperties, (int)BdaTunerExtension.KSPROPERTY_BDA_PILOT, instanceBuffer, 32, commandBuffer, 4);
            if (reply != 0)
            {
                Logger.Instance.Write("Hauppauge DVB-S2 handler: Set Pilot command failed error code 0x" + reply.ToString("X"));
                return(false);
            }
            else
            {
                Logger.Instance.Write("Hauppauge DVB-S2 handler: Pilot set to " + setting);

                Marshal.WriteInt32(commandBuffer, (int)DsUtils.GetNativeRollOff(frequency.RollOff));
                reply = propertySet.Set(bdaTunerExtensionProperties, (int)BdaTunerExtension.KSPROPERTY_BDA_ROLL_OFF, instanceBuffer, 32, commandBuffer, 4);
                if (reply != 0)
                {
                    Logger.Instance.Write("Hauppauge DVB-S2 handler: Set Rolloff command failed error code 0x" + reply.ToString("X"));
                    return(false);
                }
                else
                {
                    Logger.Instance.Write("Hauppauge DVB-S2 handler: Rolloff set to " + frequency.RollOff);
                }
            }

            return(true);
        }