private static extern DVBError CDVBFrontend_GetChannel( IntPtr pData, out Channel_S rChannel );
private static extern DVBError CDVBFrontend_SetChannel( IntPtr pData, Channel_S rChannel, bool bPowerOnly );
/// <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;
}
private static extern DVBError CDVBFrontend_GetChannel(IntPtr pData, out Channel_S rChannel);
/// <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);
}
private static extern DVBError CDVBFrontend_SetChannel(IntPtr pData, Channel_S rChannel, bool bPowerOnly);
