private bool BeforeTune(IChannel channel, ref int subChannelId, out int pmtPid)
{
int frequency = 0;
int symbolRate = 0;
int modulation = (int)eModulationTAG.QAM_64;
int bandWidth = 0;
LNBSelectionType lnbSelection = LNBSelectionType.Lnb0;
const int lnbKhzTone = 22;
const int fec = (int)FecType.Fec_Auto;
int polarity = 0;
SS2DisEqcType disType = SS2DisEqcType.None;
int switchFreq = 0;
pmtPid = 0;
int satelliteIndex = 0;
Log.Log.WriteFile("ss2:Tune({0})", channel);
if (_epgGrabbing)
{
_epgGrabbing = false;
if (_epgGrabberCallback != null && _epgGrabbing)
{
_epgGrabberCallback.OnEpgCancelled();
}
}
switch (_cardType)
{
case CardType.DvbS:
DVBSChannel dvbsChannel = channel as DVBSChannel;
if (dvbsChannel == null)
{
Log.Log.Error("Channel is not a DVBS channel!!! {0}", channel.GetType().ToString());
return(false);
}
if (CurrentChannel != null)
{
DVBSChannel oldChannels = (DVBSChannel)CurrentChannel;
if (oldChannels.Equals(channel))
{
//@FIX this fails for back-2-back recordings
//Log.Log.WriteFile("ss2:already tuned on this channel");
//return _mapSubChannels[0];
}
}
frequency = (int)dvbsChannel.Frequency;
symbolRate = dvbsChannel.SymbolRate;
satelliteIndex = dvbsChannel.SatelliteIndex;
bool hiBand = BandTypeConverter.IsHiBand(dvbsChannel, Parameters);
int lof1, lof2, sw;
BandTypeConverter.GetDefaultLnbSetup(Parameters, dvbsChannel.BandType, out lof1, out lof2, out sw);
int lnbFrequency;
if (BandTypeConverter.IsHiBand(dvbsChannel, Parameters))
{
lnbFrequency = lof2 * 1000;
}
else
{
lnbFrequency = lof1 * 1000;
}
//0=horizontal or left, 1=vertical or right
polarity = 0;
if (dvbsChannel.Polarisation == Polarisation.LinearV)
{
polarity = 1;
}
if (dvbsChannel.Polarisation == Polarisation.CircularR)
{
polarity = 1;
}
Log.Log.WriteFile("ss2: Polarity:{0} {1}", dvbsChannel.Polarisation, polarity);
lnbSelection = LNBSelectionType.Lnb0;
if (dvbsChannel.BandType == BandType.Universal)
{
//only set the LNB (22,33,44) Khz tone when we use ku-band and are in hi-band
switch (lnbKhzTone)
{
case 22:
lnbSelection = LNBSelectionType.Lnb22kHz;
break;
}
if (hiBand == false)
{
lnbSelection = LNBSelectionType.Lnb0;
}
}
switch (dvbsChannel.DisEqc)
{
case DisEqcType.None: // none
disType = SS2DisEqcType.None;
break;
case DisEqcType.SimpleA: // Simple A
disType = SS2DisEqcType.Simple_A;
break;
case DisEqcType.SimpleB: // Simple B
disType = SS2DisEqcType.Simple_B;
break;
case DisEqcType.Level1AA: // Level 1 A/A
disType = SS2DisEqcType.Level_1_A_A;
break;
case DisEqcType.Level1BA: // Level 1 B/A
disType = SS2DisEqcType.Level_1_B_A;
break;
case DisEqcType.Level1AB: // Level 1 A/B
disType = SS2DisEqcType.Level_1_A_B;
break;
case DisEqcType.Level1BB: // Level 1 B/B
disType = SS2DisEqcType.Level_1_B_B;
break;
}
switchFreq = lnbFrequency / 1000; //in MHz
pmtPid = dvbsChannel.PmtPid;
break;
case CardType.DvbT:
DVBTChannel dvbtChannel = channel as DVBTChannel;
if (dvbtChannel == null)
{
Log.Log.Error("Channel is not a DVBT channel!!! {0}", channel.GetType().ToString());
return(false);
}
if (CurrentChannel != null)
{
DVBTChannel oldChannelt = (DVBTChannel)CurrentChannel;
if (oldChannelt.Equals(channel))
{
//@FIX this fails for back-2-back recordings
//Log.Log.WriteFile("ss2:already tuned on this channel");
//return _mapSubChannels[0];
}
}
frequency = (int)dvbtChannel.Frequency;
bandWidth = dvbtChannel.BandWidth;
pmtPid = dvbtChannel.PmtPid;
break;
case CardType.DvbC:
DVBCChannel dvbcChannel = channel as DVBCChannel;
if (dvbcChannel == null)
{
Log.Log.Error("Channel is not a DVBC channel!!! {0}", channel.GetType().ToString());
return(false);
}
if (CurrentChannel != null)
{
DVBCChannel oldChannelc = (DVBCChannel)CurrentChannel;
if (oldChannelc.Equals(channel))
{
//@FIX this fails for back-2-back recordings
//Log.Log.WriteFile("ss2:already tuned on this channel");
//return _mapSubChannels[0];
}
}
frequency = (int)dvbcChannel.Frequency;
symbolRate = dvbcChannel.SymbolRate;
switch (dvbcChannel.ModulationType)
{
case ModulationType.Mod16Qam:
modulation = (int)eModulationTAG.QAM_16;
break;
case ModulationType.Mod32Qam:
modulation = (int)eModulationTAG.QAM_32;
break;
case ModulationType.Mod64Qam:
modulation = (int)eModulationTAG.QAM_64;
break;
case ModulationType.Mod128Qam:
modulation = (int)eModulationTAG.QAM_128;
break;
case ModulationType.Mod256Qam:
modulation = (int)eModulationTAG.QAM_256;
break;
}
pmtPid = dvbcChannel.PmtPid;
break;
case CardType.Atsc:
ATSCChannel dvbaChannel = channel as ATSCChannel;
if (dvbaChannel == null)
{
Log.Log.Error("Channel is not a ATSC channel!!! {0}", channel.GetType().ToString());
return(false);
}
if (CurrentChannel != null)
{
ATSCChannel oldChannela = (ATSCChannel)CurrentChannel;
if (oldChannela.Equals(channel))
{
//@FIX this fails for back-2-back recordings
//Log.Log.WriteFile("ss2:already tuned on this channel");
//return _mapSubChannels[0];
}
}
//if modulation = 256QAM assume ATSC QAM for HD5000
if (dvbaChannel.ModulationType == ModulationType.Mod256Qam)
{
Log.Log.WriteFile("DVBGraphB2C2: ATSC Channel:{0} Frequency:{1}", dvbaChannel.PhysicalChannel,
dvbaChannel.Frequency);
frequency = (int)dvbaChannel.Frequency;
pmtPid = dvbaChannel.PmtPid;
}
else
{
Log.Log.WriteFile("DVBGraphSkyStar2: ATSC Channel:{0}", dvbaChannel.PhysicalChannel);
//#DM B2C2 SDK says ATSC is tuned by frequency. Here we work the OTA frequency by channel number#
int atscfreq = 0;
if (dvbaChannel.PhysicalChannel <= 6)
{
atscfreq = 45 + (dvbaChannel.PhysicalChannel * 6);
}
if (dvbaChannel.PhysicalChannel >= 7 && dvbaChannel.PhysicalChannel <= 13)
{
atscfreq = 177 + ((dvbaChannel.PhysicalChannel - 7) * 6);
}
if (dvbaChannel.PhysicalChannel >= 14)
{
atscfreq = 473 + ((dvbaChannel.PhysicalChannel - 14) * 6);
}
//#DM changed tuning parameter from physical channel to calculated frequency above.
frequency = atscfreq;
Log.Log.WriteFile("ss2: ATSC Frequency:{0} MHz", frequency);
pmtPid = dvbaChannel.PmtPid;
}
break;
}
if (_graphState == GraphState.Idle)
{
BuildGraph();
}
if (_mapSubChannels.ContainsKey(subChannelId) == false)
{
subChannelId = GetNewSubChannel(channel);
}
_mapSubChannels[subChannelId].CurrentChannel = channel;
_mapSubChannels[subChannelId].OnBeforeTune();
if (_interfaceEpgGrabber != null)
{
_interfaceEpgGrabber.Reset();
}
if (frequency > 13000)
{
frequency /= 1000;
}
Log.Log.WriteFile("ss2: Transponder Frequency:{0} MHz", frequency);
int hr = _interfaceB2C2TunerCtrl.SetFrequency(frequency);
if (hr != 0)
{
Log.Log.Error("ss2:SetFrequencyKHz() failed:0x{0:X}", hr);
return(false);
}
switch (_cardType)
{
case CardType.DvbC:
Log.Log.WriteFile("ss2: SymbolRate:{0} KS/s", symbolRate);
hr = _interfaceB2C2TunerCtrl.SetSymbolRate(symbolRate);
if (hr != 0)
{
Log.Log.Error("ss2:SetSymbolRate() failed:0x{0:X}", hr);
return(false);
}
Log.Log.WriteFile("ss2: Modulation:{0}", ((eModulationTAG)modulation));
hr = _interfaceB2C2TunerCtrl.SetModulation(modulation);
if (hr != 0)
{
Log.Log.Error("ss2:SetModulation() failed:0x{0:X}", hr);
return(false);
}
break;
case CardType.DvbT:
Log.Log.WriteFile("ss2: GuardInterval:auto");
hr = _interfaceB2C2TunerCtrl.SetGuardInterval((int)GuardIntervalType.Interval_Auto);
if (hr != 0)
{
Log.Log.Error("ss2:SetGuardInterval() failed:0x{0:X}", hr);
return(false);
}
Log.Log.WriteFile("ss2: Bandwidth:{0} MHz", bandWidth);
//hr = _interfaceB2C2TunerCtrl.SetBandwidth((int)dvbtChannel.BandWidth);
// Set Channel Bandwidth (NOTE: Temporarily use polarity function to avoid having to
// change SDK interface for SetBandwidth)
// from Technisat SDK 03/2006
hr = _interfaceB2C2TunerCtrl.SetPolarity(bandWidth);
if (hr != 0)
{
Log.Log.Error("ss2:SetBandwidth() failed:0x{0:X}", hr);
return(false);
}
break;
case CardType.DvbS:
Log.Log.WriteFile("ss2: SymbolRate:{0} KS/s", symbolRate);
hr = _interfaceB2C2TunerCtrl.SetSymbolRate(symbolRate);
if (hr != 0)
{
Log.Log.Error("ss2:SetSymbolRate() failed:0x{0:X}", hr);
return(false);
}
Log.Log.WriteFile("ss2: Fec:{0} {1}", ((FecType)fec), fec);
hr = _interfaceB2C2TunerCtrl.SetFec(fec);
if (hr != 0)
{
Log.Log.Error("ss2:SetFec() failed:0x{0:X}", hr);
return(false);
}
hr = _interfaceB2C2TunerCtrl.SetPolarity(polarity);
if (hr != 0)
{
Log.Log.Error("ss2:SetPolarity() failed:0x{0:X}", hr);
return(false);
}
Log.Log.WriteFile("ss2: Lnb:{0}", lnbSelection);
hr = _interfaceB2C2TunerCtrl.SetLnbKHz((int)lnbSelection);
if (hr != 0)
{
Log.Log.Error("ss2:SetLnbKHz() failed:0x{0:X}", hr);
return(false);
}
Log.Log.WriteFile("ss2: Diseqc:{0} {1}", disType, disType);
hr = _interfaceB2C2TunerCtrl.SetDiseqc((int)disType);
if (hr != 0)
{
Log.Log.Error("ss2:SetDiseqc() failed:0x{0:X}", hr);
return(false);
}
Log.Log.WriteFile("ss2: LNBFrequency:{0} MHz", switchFreq);
hr = _interfaceB2C2TunerCtrl.SetLnbFrequency(switchFreq);
if (hr != 0)
{
Log.Log.Error("ss2:SetLnbFrequency() failed:0x{0:X}", hr);
return(false);
}
if (_useDISEqCMotor)
{
if (satelliteIndex > 0)
{
DisEqcGotoPosition((byte)satelliteIndex);
}
}
break;
}
return(true);
}
