/// <summary>
/// Ermittelt die zu verwendende Größe für die Zwischenspeicherung beim Schreiben.
/// </summary>
/// <param name="type">Die Art des Bildsignals.</param>
/// <returns>Die zu verwendende Speichergröße.</returns>
public int? GetFileBufferSize( legacy.StreamTypes? type )
{
// Want audio
if (!type.HasValue)
return AudioFileBufferSize;
// Check for supported types
switch (type.Value)
{
case legacy.StreamTypes.Video13818: return SDTVFileBufferSize;
case legacy.StreamTypes.H264: return HDTVFileBufferSize;
}
// We don't known
return null;
}
/// <summary>
/// Erzeugt die Beschreibung eines Eintrags aus der Programmzeitschrift.
/// </summary>
/// <remarks>Wird auf einem separaten <see cref="Thread"/> ausgeführt und
/// muss alle Zugriff auf die statischen Daten geeignet synchronisieren.</remarks>
/// <param name="source">Die Quelle, zu der die Information gehört.</param>
/// <param name="identifier">Die eindeutige Kennung der Sendung.</param>
/// <param name="startTime">Anfangszeitpunkt in UTC / GMT.</param>
/// <param name="duration">Dauer der zugehörigen Sendung.</param>
/// <param name="descriptors">Ergänzende Beschreibungen zur Sendung.</param>
/// <returns>Die neu erzeugte Beschreibungsinstanz.</returns>
private ProgramGuideItem CreateGuideItem( SourceIdentifier source, uint identifier, DateTime startTime, TimeSpan duration, legacy.Descriptor[] descriptors )
{
// Descriptors we can have
legacy.Descriptors.ParentalRating rating = null;
legacy.Descriptors.ShortEvent shortEvent = null;
//
// Collector
var exEvents = new List<legacy.Descriptors.ExtendedEvent>();
var categories = new HashSet<ContentCategory>();
// Check all descriptors
foreach (var descr in descriptors)
if (descr.IsValid)
{
// Check type
if (shortEvent == null)
{
// Read
shortEvent = descr as legacy.Descriptors.ShortEvent;
// Done for now
if (null != shortEvent)
continue;
}
if (rating == null)
{
// Read
rating = descr as legacy.Descriptors.ParentalRating;
// Done for now
if (null != rating)
continue;
}
// Event
var exEvent = descr as legacy.Descriptors.ExtendedEvent;
if (exEvent != null)
{
// Remember
exEvents.Add( exEvent );
// Next
continue;
}
// Check for content information
var content = descr as legacy.Descriptors.Content;
if (content != null)
{
// Process
if (content.Categories != null)
foreach (var singleCategory in content.Categories)
categories.Add( Event.GetContentCategory( singleCategory ) );
// Next
continue;
}
}
// Data
string name = null, description = null, language = null, shortDescription = null;
// Take the best we got
if (exEvents.Count > 0)
{
// Text builder
StringBuilder text = new StringBuilder();
// Process all
foreach (legacy.Descriptors.ExtendedEvent exEvent in exEvents)
{
// Normal
if (null == name)
name = exEvent.Name;
if (null == language)
language = exEvent.Language;
// Merge
if (exEvent.Text != null)
text.Append( exEvent.Text );
}
// Use
description = text.ToString();
}
// Try short event
if (shortEvent != null)
{
// Remember
if (string.IsNullOrEmpty( shortEvent.Name ))
shortDescription = shortEvent.Text;
else if (string.IsNullOrEmpty( shortEvent.Text ))
shortDescription = shortEvent.Name;
else if (string.IsNullOrEmpty( description ) || StringComparer.Ordinal.Equals( shortEvent.Text, description ))
shortDescription = shortEvent.Name;
else
shortDescription = string.Format( "{0} ({1})", shortEvent.Name, shortEvent.Text );
// Read
if (string.IsNullOrEmpty( name ))
name = shortEvent.Name;
if (string.IsNullOrEmpty( description ))
description = shortEvent.Text;
if (string.IsNullOrEmpty( language ))
language = shortEvent.Language;
}
// Not possible
if (string.IsNullOrEmpty( name ))
return null;
// Defaults
if (shortDescription == null)
shortDescription = string.Empty;
// Defaults
if (string.IsNullOrEmpty( description ))
description = "-";
if (null == language)
language = string.Empty;
// Create event
return new ProgramGuideItem
{
Ratings = ((rating == null) ? null : rating.Ratings) ?? EmptyStringArray,
Duration = (int) duration.TotalSeconds,
ShortDescription = shortDescription,
Content = categories.ToArray(),
Description = description,
Identifier = identifier,
Language = language,
Start = startTime,
Source = source,
Name = name
};
}
/// <summary>
/// Erzeugt die Beschreibung eines Eintrags aus der Programmzeitschrift und vermerkt diese
/// in der Gesamtliste.
/// </summary>
/// <remarks>Wird auf einem separaten <see cref="Thread"/> ausgeführt und
/// muss alle Zugriff auf die statischen Daten geeignet synchronisieren.</remarks>
/// <param name="source">Die Quelle, zu der die Information gehört.</param>
/// <param name="identifier">Die eindeutige Kennung der Sendung.</param>
/// <param name="startTime">Anfangszeitpunkt in UTC / GMT.</param>
/// <param name="duration">Dauer der zugehörigen Sendung.</param>
/// <param name="descriptors">Ergänzende Beschreibungen zur Sendung.</param>
/// <returns>Die neu erzeugte Beschreibungsinstanz.</returns>
private void AddGuideItem( SourceIdentifier source, uint identifier, DateTime startTime, TimeSpan duration, legacy.Descriptor[] descriptors )
{
// First create it
ProgramGuideItem info = CreateGuideItem( source, identifier, startTime, duration, descriptors );
if (null == info)
return;
// Must synchronize
lock (m_EPGItems)
{
// Attach to the source list
Dictionary<DateTime, ProgramGuideItem> list;
if (!m_EPGItems.TryGetValue( source, out list ))
{
// Create new
list = new Dictionary<DateTime, ProgramGuideItem>();
// Add it
m_EPGItems[source] = list;
}
// Old count
int before = list.Count;
// Remember
list[startTime] = info;
// New count
m_EPGItemCount += (list.Count - before);
}
}
