/// <summary>
/// Meldet eine relative Nummer einer Quellgruppe bezüglich dieser Auswahl.
/// </summary>
/// <param name="group">Die zu prüfende Quellgruppe.</param>
/// <returns>Eine bei 0 beginnenden laufende Nummer, die in eine Farbcodierung umgesetzt wird.</returns>
public override int GetSubGroupIndex(SourceGroup group)
{
// Convert
SatelliteGroup sat = (SatelliteGroup)group;
// Check mode
switch (sat.Polarization)
{
case Polarizations.Horizontal: return(0);
case Polarizations.Vertical: return(1);
default: return(2);
}
}
/// <summary>
/// Ermittelt die DiSEqC Steuersequenz aus der Angabe einer Quellgruppe und ihres Ursprungs.
/// </summary>
/// <param name="group">Die zu prüfende Quellgruppe.</param>
/// <param name="location">Der zugehörige Ursprung.</param>
/// <returns>Die gewünschten Informationen.</returns>
/// <exception cref="ArgumentNullException">Mindestens ein Parameter ist nicht gesetzt.</exception>
public static StandardDiSEqC FromSourceGroup(SatelliteGroup group, SatelliteLocation location)
{
// Validate
if (group == null)
{
throw new ArgumentNullException("group");
}
if (location == null)
{
throw new ArgumentNullException("location");
}
// Core flags
int choice = 0;
if (group.Frequency >= location.SwitchFrequency)
{
choice |= 0x01;
}
if (group.Polarization == Polarizations.Horizontal)
{
choice |= 0x02;
}
// Check mode
switch (location.LNB)
{
case DiSEqCLocations.None: return(new StandardDiSEqC(new byte[] { 0xe0, 0x00, 0x00 }, 0xff, 1));
case DiSEqCLocations.BurstOn: return(new StandardDiSEqC(new byte[0], 0, 1));
case DiSEqCLocations.BurstOff: return(new StandardDiSEqC(new byte[0], 1, 1));
case DiSEqCLocations.DiSEqC1: return(new StandardDiSEqC(new byte[] { 0xe0, 0x10, 0x38, (byte)(0xf0 | choice) }, 0xff, 3));
case DiSEqCLocations.DiSEqC2: return(new StandardDiSEqC(new byte[] { 0xe0, 0x10, 0x38, (byte)(0xf4 | choice) }, 0xff, 3));
case DiSEqCLocations.DiSEqC3: return(new StandardDiSEqC(new byte[] { 0xe0, 0x10, 0x38, (byte)(0xf8 | choice) }, 0xff, 3));
case DiSEqCLocations.DiSEqC4: return(new StandardDiSEqC(new byte[] { 0xe0, 0x10, 0x38, (byte)(0xfc | choice) }, 0xff, 3));
default: throw new NotImplementedException(location.LNB.ToString());
}
}
/// <summary>
/// Ermittelt die DiSEqC Steuersequenz aus der Angabe einer Quellgruppe und ihres Ursprungs.
/// </summary>
/// <param name="group">Die zu prüfende Quellgruppe.</param>
/// <param name="location">Der zugehörige Ursprung.</param>
/// <returns>Die gewünschten Informationen.</returns>
/// <exception cref="ArgumentNullException">Mindestens ein Parameter ist nicht gesetzt.</exception>
public static StandardDiSEqC FromSourceGroup( SatelliteGroup group, SatelliteLocation location )
{
// Validate
if (group == null)
throw new ArgumentNullException( "group" );
if (location == null)
throw new ArgumentNullException( "location" );
// Core flags
int choice = 0;
if (group.Frequency >= location.SwitchFrequency)
choice |= 0x01;
if (group.Polarization == Polarizations.Horizontal)
choice |= 0x02;
// Check mode
switch (location.LNB)
{
case DiSEqCLocations.None: return new StandardDiSEqC( new byte[] { 0xe0, 0x00, 0x00 }, 0xff, 1 );
case DiSEqCLocations.BurstOn: return new StandardDiSEqC( new byte[0], 0, 1 );
case DiSEqCLocations.BurstOff: return new StandardDiSEqC( new byte[0], 1, 1 );
case DiSEqCLocations.DiSEqC1: return new StandardDiSEqC( new byte[] { 0xe0, 0x10, 0x38, (byte) (0xf0 | choice) }, 0xff, 3 );
case DiSEqCLocations.DiSEqC2: return new StandardDiSEqC( new byte[] { 0xe0, 0x10, 0x38, (byte) (0xf4 | choice) }, 0xff, 3 );
case DiSEqCLocations.DiSEqC3: return new StandardDiSEqC( new byte[] { 0xe0, 0x10, 0x38, (byte) (0xf8 | choice) }, 0xff, 3 );
case DiSEqCLocations.DiSEqC4: return new StandardDiSEqC( new byte[] { 0xe0, 0x10, 0x38, (byte) (0xfc | choice) }, 0xff, 3 );
default: throw new NotImplementedException( location.LNB.ToString() );
}
}
/// <summary>
/// Wählt eine Quellgruppe aus.
/// </summary>
/// <param name="group">Díe Daten der Quellgruppe.</param>
/// <param name="location">Die Wahl des Ursprungs, über den die Quellgruppe empfangen werden kann.</param>
/// <returns>Gesetzt, wenn es sich um eine DVB-S Quellgruppe handelt.</returns>
private Channel_S?Tune(SatelliteGroup group, SatelliteLocation location)
{
// Not us
if (location == null)
{
return(null);
}
if (group == null)
{
return(null);
}
// Validate
if (FrontendType != FrontendType.Satellite)
{
throw new DVBException("Expected " + FrontendType.ToString() + " Channel");
}
// Create channel
var data =
new Channel_S
{
Mode = group.UsesS2Modulation ? DVBSMode.DVB_S2 : DVBSMode.DVB_S,
Inversion = SpectrumInversion.Auto,
SymbolRate = group.SymbolRate,
Frequency = group.Frequency,
};
// Attach to the DiSEqC setting
var selector = StandardDiSEqC.FromSourceGroup(group, location);
// See if the message is different from the last one
if (!selector.Equals(m_lastMessage))
{
// Remember
m_lastMessage = selector.Clone();
// As long as necessary
for (int nCount = selector.Repeat; nCount-- > 0; Thread.Sleep(120))
{
// Send it
DVBException.ThrowOnError(_SendDiSEqCMsg(m_Class.ClassPointer, selector.Request, (byte)selector.Request.Length, selector.Burst), "Could not send DiSEqC message");
// Set repeat flag
if (selector.Request.Length > 0)
{
selector.Request[0] |= 1;
}
}
}
// Calculated items
data.b22kHz = (group.Frequency >= location.SwitchFrequency) ? 1 : 0;
data.LOF = (0 == data.b22kHz) ? location.Frequency1 : location.Frequency2;
// Power modes
switch (group.Polarization)
{
case Polarizations.Horizontal: data.LNBPower = PowerMode.Horizontal; break;
case Polarizations.Vertical: data.LNBPower = PowerMode.Vertical; break;
case Polarizations.NotDefined: data.LNBPower = PowerMode.Off; break;
default: throw new ArgumentException(group.Polarization.ToString(), "Polarization");
}
// Process
return(data.SetChannel(this, false));
}
/// <summary>
/// Wählt eine Quellgruppe aus.
/// </summary>
/// <param name="group">Díe Daten der Quellgruppe.</param>
/// <param name="location">Die Wahl des Ursprungs, über den die Quellgruppe empfangen werden kann.</param>
/// <returns>Gesetzt, wenn es sich um eine DVB-S Quellgruppe handelt.</returns>
private bool SendChannel(SatelliteGroup group, SatelliteLocation location)
{
// Not us
if (location == null)
{
return(false);
}
if (group == null)
{
return(false);
}
// Validate
if (FrontendType != FrontendType.Satellite)
{
throw new DVBException("Expected " + FrontendType.ToString() + " Channel");
}
// Create channel
var channel =
new Channel_S
{
Inversion = SpectrumInversion.Auto,
SymbolRate = group.SymbolRate,
Frequency = group.Frequency,
};
// Attach to the DiSEqC setting
var selector = StandardDiSEqC.FromSourceGroup(group, location);
// See if the message is different from the last one
if (!selector.Equals(m_lastMessage))
{
// Remember
m_lastMessage = selector.Clone();
// As long as necessary
for (int nCount = selector.Repeat; nCount-- > 0; Thread.Sleep(120))
{
// Send it
DVBException.ThrowOnError(CDVBFrontend_SendDiSEqCMsg(m_Class.ClassPointer, selector.Request, (byte)selector.Request.Length, selector.Burst), "Could not send DiSEqC Message");
// Set repeat flag
if (selector.Request.Length > 0)
{
selector.Request[0] |= 1;
}
}
}
// Calculated items
channel.b22kHz = (group.Frequency >= location.SwitchFrequency) ? 1 : 0;
channel.LOF = (0 == channel.b22kHz) ? location.Frequency1 : location.Frequency2;
// Power modes
switch (group.Polarization)
{
case Polarizations.Horizontal: channel.LNBPower = PowerMode.Horizontal; break;
case Polarizations.Vertical: channel.LNBPower = PowerMode.Vertical; break;
case Polarizations.NotDefined: channel.LNBPower = PowerMode.Off; break;
default: throw new ArgumentException(group.Polarization.ToString(), "Polarization");
}
// Process
CheckChannel(CDVBFrontend_SetChannel(m_Class.ClassPointer, channel, false));
// Check up for synchronisation
Channel_S val1, val2;
// Get channel twice
CheckChannel(CDVBFrontend_GetChannel(m_Class.ClassPointer, out val1));
CheckChannel(CDVBFrontend_GetChannel(m_Class.ClassPointer, out val2));
// Did it
return(true);
}
