/// <summary>
/// Wertet die nächste Tabelle aus.
/// </summary>
/// <param name="table">Eine aktuelle Tabelle.</param>
private void ProcessNext( PMT table )
{
// Got new data
if (table != null)
if (table.IsValid)
{
// See of there is a previous one
PMT previous;
if (m_lastTable.TryGetValue( table.ProgramNumber, out previous ))
{
// Report on change or first request
if ((previous == null) || (previous.Version != table.Version))
if (!m_processor( table, previous == null ))
return;
// Update
m_lastTable[table.ProgramNumber] = table;
}
}
// Next source to request
var source = m_services[m_index++];
// Clip
if (m_index == m_services.Length)
m_index = 0;
// Fire up
m_graph.ActivatePMTWatchDog( source, ProcessNext );
}
/// <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>
/// Wertet eine SI Tabelle aus.
/// </summary>
/// <param name="pmt"></param>
private void OnPMTFound( PMT pmt )
{
// Validate
if (pmt != null)
if (pmt.ProgramNumber != m_WaitForService)
pmt = null;
// Disable or restart
m_WaitForService = m_ResetAfterServiceFound;
m_WaitForPID = 0;
// Nothing to do
if (pmt == null)
return;
// Forward
var callback = PMTFound;
if (callback != null)
callback( pmt );
}
