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);
}
