/// <summary>
/// Versucht, aus der aktuellen <i>Program Access Table</i> das Programm des
/// eingehenden Transport Streams zu ermitteln.
/// </summary>
/// <remarks>
/// Nur das erste Programm wird berücksichtigt.
/// </remarks>
/// <param name="pat">Eine SI Tabelle.</param>
private void ProcessPAT( Section pat )
{
// Not active
if (!IsRunning)
return;
// Validate
if (!pat.IsValid)
return;
// Attach to table
PAT table = pat.Table as PAT;
// Validate
if (null == table)
return;
if (!table.IsValid)
return;
if (null == table.ProgramIdentifier)
return;
// Get the first
IEnumerator<KeyValuePair<ushort, ushort>> programEnum = table.ProgramIdentifier.GetEnumerator();
if (!programEnum.MoveNext())
return;
// Compare current PMT
if (m_CurrentPMT == programEnum.Current.Value)
return;
// Remove the audio names
m_AudioNames = new string[0];
// Stop current PMT
if (0 != m_CurrentPMT)
m_TSParser.RemoveFilter( m_CurrentPMT );
// Re-create parser
m_PMTParser = new Parser();
// Connect to handler
m_PMTParser.SectionFound += ProcessPMT;
// Change
m_CurrentPMT = programEnum.Current.Value;
m_CurrentService = null;
CurrentEntry = null;
NextEntry = null;
// Create PMT
m_TSParser.SetFilter( m_CurrentPMT, true, m_PMTParser.OnData );
}
private void AddEntry( ushort service, EventEntry entry )
{
// Create a key
string simpleKey = string.Format( "{0}-{1}", service, entry.EventIdentifier );
// Already collected
if (m_Entries.ContainsKey( simpleKey )) return;
// Lock out
m_Entries[simpleKey] = true;
// Load all
string name, description;
LoadEventData( out name, out description, entry.Descriptors );
// Remember
m_ListItems.Add( new EPGEntry( service, name, description, entry.StartTime.ToLocalTime(), entry.Duration, entry.EventIdentifier ) );
}
/// <summary>
/// Prüft, ob in der Programmzeitschrift Daten zur aktuellen Aufzeichnung vorliegen.
/// </summary>
/// <param name="section">Eintrag aus der Programmzeitschrift.</param>
private void ProcessEPG( Section section )
{
// Not valid
if (null == section)
return;
if (!section.IsValid)
return;
// Get the table
EIT eit = section.Table as EIT;
// Not valid
if (null == eit)
return;
if (!eit.IsValid)
return;
// See if filter is active
int? service = m_CurrentService;
// Only current events are of interest
if (!service.HasValue)
return;
if (service.Value != eit.ServiceIdentifier)
return;
// Set flags
bool gotCurrent = false, gotNext = false;
// Find all
foreach (EventEntry entry in eit.Entries)
{
// Check for current
if (!gotCurrent)
if (EventStatus.Running == entry.Status)
{
// Remember
CurrentEntry = entry;
gotCurrent = true;
// Done
if (gotNext)
break;
else
continue;
}
// Check for next
if (!gotNext)
if (EventStatus.NotRunning == entry.Status)
{
// Remember
NextEntry = entry;
gotNext = true;
// Done
if (gotCurrent)
break;
}
}
}