/// <summary>
/// Aktiviert die Entschlüsselung eines Senders.
/// </summary>
/// <param name="pmt">Daten zum Sender.</param>
/// <returns>Die neue Befehlssequenz.</returns>
public static CACommand CreateDecrypt(PMT pmt)
{
// Create helper
byte[] table = pmt.Section.CreateSITable();
// Create
CACommand command = new CACommand();
// Fill command
command.Tag = (byte)CACommandTags.Decrypt;
command.CommandData = new byte[MaxDataLength];
// Fill data
command.CommandData[0] = (byte)CAListTypes.One;
command.CommandData[1] = (byte)PMTCommands.Descramble;
// Calculate the length - we are in trouble if PMT is too long!
command.Length = (ushort)(2 + Math.Min(command.CommandData.Length - 2, table.Length - 1));
// Copy over and get rid of the offset byte
Array.Copy(table, 1, command.CommandData, 2, command.Length - 2);
// Report
return(command);
}
/// <summary>
/// Setzt einen Parameter.
/// </summary>
/// <param name="propertySetId">Die eindeutige Kennung der Parametergruppe.</param>
/// <param name="propertyId">Die laufende Nummer des Parameters.</param>
/// <param name="instanceData">Die Daten der Instanz.</param>
/// <param name="instanceDataLength">Die Größe der Daten der Instanz.</param>
/// <param name="value">Der neue Wert.</param>
/// <param name="valueLength">Die Größe des neuen Wertes.</param>
public void Set(ref Guid propertySetId, BDAProperties propertyId, ref CACommand instanceData, Int32 instanceDataLength, ref CACommand value, Int32 valueLength)
{
// Process
Int32 hResult = m_Set(ComInterface, ref propertySetId, propertyId, ref instanceData, instanceDataLength, ref value, valueLength);
if (hResult < 0)
{
throw new COMException("KsPropertySet.Set", hResult);
}
}
/// <summary>
/// Führt einen CI Befehl aus.
/// </summary>
/// <param name="command">Der gewünschte Befehl.</param>
public void Send(CACommand command)
{
// Load property set identifier
var propSetId = CIControl.PropertySetId;
// Create a clone
var clone = command.Clone();
// Get the raw size
int commandSize = Marshal.SizeOf(command), cloneSize = Marshal.SizeOf(clone);
// Send the command
Set(ref propSetId, BDAProperties.SendCA, ref command, commandSize, ref clone, cloneSize);
}
/// <summary>
/// Erzeugt einen Befehlssequenz zur Deaktivierung des CI.
/// </summary>
/// <returns>Eine neue Befehlssequenz.</returns>
public static CACommand CreateReset()
{
// Create
CACommand command = new CACommand();
// Fill command
command.Tag = (byte) CACommandTags.Reset;
command.CommandData = new byte[MaxDataLength];
// Fill data
command.CommandData[0] = (byte) CACommandTags.Reset;
command.Length = 1;
// Report
return command;
}
/// <summary>
/// Erzeugt eine Kopie.
/// </summary>
/// <returns>Eine exakte Kopie.</returns>
public CACommand Clone()
{
// Create clone
CACommand clone = new CACommand();
// Fill
clone.CommandData = (null == CommandData) ? null : (byte[]) CommandData.Clone();
clone._Padding = _Padding;
clone.Length = Length;
clone.More = More;
clone.Slot = Slot;
clone.Tag = Tag;
// Report
return clone;
}
/// <summary>
/// Erzeugt einen Befehlssequenz zur Deaktivierung des CI.
/// </summary>
/// <returns>Eine neue Befehlssequenz.</returns>
public static CACommand CreateReset()
{
// Create
CACommand command = new CACommand();
// Fill command
command.Tag = (byte)CACommandTags.Reset;
command.CommandData = new byte[MaxDataLength];
// Fill data
command.CommandData[0] = (byte)CACommandTags.Reset;
command.Length = 1;
// Report
return(command);
}
/// <summary>
/// Erzeugt eine Kopie.
/// </summary>
/// <returns>Eine exakte Kopie.</returns>
public CACommand Clone()
{
// Create clone
CACommand clone = new CACommand();
// Fill
clone.CommandData = (null == CommandData) ? null : (byte[])CommandData.Clone();
clone._Padding = _Padding;
clone.Length = Length;
clone.More = More;
clone.Slot = Slot;
clone.Tag = Tag;
// Report
return(clone);
}
/// <summary>
/// Deaktiviert die Entschlüsselung.
/// </summary>
/// <returns>Die neue Befehlssequenz.</returns>
public static CACommand StopDecryption()
{
// Create
CACommand command = new CACommand();
// Fill command
command.Tag = (byte)CACommandTags.Decrypt;
command.CommandData = new byte[MaxDataLength];
// Fill data
command.Length = 2;
command.CommandData[0] = (byte)CAListTypes.One;
command.CommandData[1] = (byte)PMTCommands.NotSelected;
// Report
return(command);
}
/// <summary>
/// Wird zur eigentlichen Steuerung der Entschlüsselung aufgerufen.
/// </summary>
/// <param name="pmt">Die Informationen zur Quelle.</param>
/// <param name="reset">Gesetzt, um einen Neustart der Entschlüsselung zu erzwingen.</param>
private void Decrypt(EPG.Tables.PMT pmt, bool reset)
{
// Check the interface
var setPtr = ComIdentity.QueryInterface(m_DataGraph.TunerFilter.Interface, typeof(KsPropertySetFireDTV.Interface));
if (setPtr == IntPtr.Zero)
{
return;
}
// Process
using (var propertySet = new KsPropertySetFireDTV(setPtr))
try
{
// Load property identifier
var propSetId = PropertySetId;
var supported = propertySet.QuerySupported(ref propSetId, BDAProperties.SendCA);
if ((PropertySetSupportedTypes.Set & supported) != PropertySetSupportedTypes.Set)
{
return;
}
// Process reset
if (reset)
{
propertySet.Send(CACommand.CreateReset());
}
else if (pmt == null)
{
propertySet.Send(CACommand.StopDecryption());
}
else
{
propertySet.Send(CACommand.CreateDecrypt(pmt));
}
}
catch
{
// Forward if not resetting
if (pmt != null)
{
throw;
}
}
}
/// <summary>
/// Aktiviert die Entschlüsselung eines Senders.
/// </summary>
/// <param name="pmt">Daten zum Sender.</param>
/// <returns>Die neue Befehlssequenz.</returns>
public static CACommand CreateDecrypt( PMT pmt )
{
// Create helper
byte[] table = pmt.Section.CreateSITable();
// Create
CACommand command = new CACommand();
// Fill command
command.Tag = (byte) CACommandTags.Decrypt;
command.CommandData = new byte[MaxDataLength];
// Fill data
command.CommandData[0] = (byte) CAListTypes.One;
command.CommandData[1] = (byte) PMTCommands.Descramble;
// Calculate the length - we are in trouble if PMT is too long!
command.Length = (ushort) (2 + Math.Min( command.CommandData.Length - 2, table.Length - 1 ));
// Copy over and get rid of the offset byte
Array.Copy( table, 1, command.CommandData, 2, command.Length - 2 );
// Report
return command;
}
/// <summary>
/// Deaktiviert die Entschlüsselung.
/// </summary>
/// <returns>Die neue Befehlssequenz.</returns>
public static CACommand StopDecryption()
{
// Create
CACommand command = new CACommand();
// Fill command
command.Tag = (byte) CACommandTags.Decrypt;
command.CommandData = new byte[MaxDataLength];
// Fill data
command.Length = 2;
command.CommandData[0] = (byte) CAListTypes.One;
command.CommandData[1] = (byte) PMTCommands.NotSelected;
// Report
return command;
}
