/// <summary>
/// Erzeugt eine neue Beschreibung.
/// </summary>
/// <param name="uniqueIdentifier">Die eindeutige Kennung dieses Datenstroms.</param>
/// <param name="manager">Die Verwaltung des Empfangs.</param>
/// <param name="targetPath">Ein optionaler Dateiname zur Ablage der empfangenen Daten.</param>
/// <param name="originalSelection">Die ursprünglich angeforderte Konfiguration der Aufzeichnung.</param>
/// <exception cref="ArgumentNullException">Es wurde keine Verwaltung angegeben</exception>
public ActiveStream( Guid uniqueIdentifier, SourceStreamsManager manager, StreamSelection originalSelection, string targetPath )
{
// Validate
if (manager == null)
throw new ArgumentNullException( "manager" );
// Remember
SourceKey = new SourceIdenfierWithKey( uniqueIdentifier, manager.Source );
RequestedStreams = originalSelection.Clone();
TargetPath = targetPath;
Manager = manager;
}
/// <summary>
/// Ermittelt eine aktive Quelle.
/// </summary>
/// <param name="source">Die eindeutige Kennung der Quelle.</param>
/// <returns>Der 0-basierte laufende Index der Quelle oder <i>-1</i>,
/// wenn diese nicht in Benutzung ist.</returns>
public ActiveStream FindSource(SourceIdenfierWithKey source)
{
// Find the source
ActiveStream stream;
if (Streams.TryGetValue(source, out stream))
{
return(stream);
}
else
{
return(null);
}
}
/// <summary>
/// Erzeugt eine neue Beschreibung.
/// </summary>
/// <param name="uniqueIdentifier">Die eindeutige Kennung dieses Datenstroms.</param>
/// <param name="manager">Die Verwaltung des Empfangs.</param>
/// <param name="targetPath">Ein optionaler Dateiname zur Ablage der empfangenen Daten.</param>
/// <param name="originalSelection">Die ursprünglich angeforderte Konfiguration der Aufzeichnung.</param>
/// <exception cref="ArgumentNullException">Es wurde keine Verwaltung angegeben</exception>
public ActiveStream(Guid uniqueIdentifier, SourceStreamsManager manager, StreamSelection originalSelection, string targetPath)
{
// Validate
if (manager == null)
{
throw new ArgumentNullException("manager");
}
// Remember
SourceKey = new SourceIdenfierWithKey(uniqueIdentifier, manager.Source);
RequestedStreams = originalSelection.Clone();
TargetPath = targetPath;
Manager = manager;
}
/// <summary>
/// Aktiviert den Empfang einer Quelle.
/// </summary>
/// <param name="sources">Informationen zu den zu aktivierenden Quellen.</param>
protected override void OnAddSources(ReceiveInformation[] sources)
{
// Prepare operation
Start(device =>
{
// Check mode
if (EPGProgress.HasValue)
{
CardServerException.Throw(new EPGActiveFault());
}
if (m_ScanProgress >= 0)
{
CardServerException.Throw(new SourceUpdateActiveFault());
}
// Force reload of group information to be current
device.ResetInformationReaders();
// Create optimizer
var optimizer = new StreamSelectionOptimizer();
// Source backmap
var infos = new Dictionary <SourceIdenfierWithKey, ReceiveInformation>();
// Pre-Test
foreach (var info in sources)
{
// It's not allowed to activate a source twice
var key = new SourceIdenfierWithKey(info.UniqueIdentifier, info.Selection.Source);
if (FindSource(key) != null)
{
CardServerException.Throw(new SourceInUseFault(info.Selection.Source));
}
// Remember
infos.Add(key, info);
// Prepare to optimize
optimizer.Add(info.Selection, info.Streams);
}
// See how many we are allowed to start
var allowed = optimizer.Optimize();
// Streams to activate
var newStreams = new List <ActiveStream>();
try
{
// Process all
for (int i = 0; i < allowed; ++i)
{
// Attach to the source
var current = sources[i];
var source = current.Selection;
var key = new SourceIdenfierWithKey(current.UniqueIdentifier, source.Source);
// Create the stream manager
var manager = source.Open(optimizer.GetStreams(i));
// Attach file size mapper
manager.FileBufferSizeChooser = infos[key].GetFileBufferSize;
// Create
var stream = new ActiveStream(key.UniqueIdentifier, manager, current.Streams, current.RecordingPath);
// Remember
newStreams.Add(stream);
// See if we have to connect an optimizer for restarts
if (device.HasConsumerRestriction)
{
stream.EnableOptimizer(source);
}
// Try to start
stream.Refresh(m_RetestWatchDogInterval);
}
// Loaded all
newStreams.ForEach(stream => Streams.Add(stream.SourceKey, stream));
// Generate response
try
{
// Create all
return(newStreams.Select(stream => stream.CreateInformation()).ToArray());
}
finally
{
// No need to clean up
newStreams.Clear();
}
}
finally
{
// Cleanup
newStreams.ForEach(stream => stream.Dispose());
}
});
}
