/// <summary>
/// Create an instance of the descriptor class.
/// </summary>
/// <param name="byteData">The MPEG2 section containing the descriptor.</param>
/// <param name="index">The index of the tag byte of the descriptor.</param>
/// <param name="scope">The current scope.</param>
/// <returns>A descriptor instance.</returns>
internal static DescriptorBase Instance(byte[] byteData, int index, Scope scope)
{
DescriptorBase descriptor;
switch ((int)byteData[index])
{
case NetworkNameDescriptorTag:
descriptor = new DVBNetworkNameDescriptor();
break;
case SatelliteDeliverySystemDescriptorTag:
descriptor = new DVBSatelliteDeliverySystemDescriptor();
break;
case ServiceDescriptorTag:
descriptor = new DVBServiceDescriptor();
break;
case ServiceListDescriptorTag:
descriptor = new DVBServiceListDescriptor();
break;
case ShortEventDescriptorTag:
descriptor = new DVBShortEventDescriptor();
break;
case ExtendedEventDescriptorTag:
descriptor = new DVBExtendedEventDescriptor();
break;
case ComponentDescriptorTag:
descriptor = new DVBComponentDescriptor();
break;
case ContentDescriptorTag:
descriptor = new DVBContentDescriptor();
break;
case ParentalRatingDescriptorTag:
descriptor = new DVBParentalRatingDescriptor();
break;
case BouquetNameDescriptorTag:
descriptor = new DVBBouquetNameDescriptor();
break;
case LocalTimeOffsetDescriptorTag:
descriptor = new DVBLocalTimeOffsetDescriptor();
break;
case OpenTVChannelInfoDescriptorTag:
descriptor = new OpenTVChannelInfoDescriptor();
break;
case GenericChannelInfoDescriptorTag:
switch (scope)
{
case Scope.Bouquet:
descriptor = new FreeviewChannelInfoDescriptor();
break;
case Scope.ServiceDescripton:
descriptor = new ServiceChannelDescriptor();
break;
default:
descriptor = new DescriptorBase();
break;
}
break;
case FreeviewChannelInfoDescriptorTag:
case TurkeyChannelInfoDescriptorTag:
case E2ChannelInfoDescriptorTag:
if (scope == Scope.Bouquet)
{
descriptor = new FreeviewChannelInfoDescriptor();
}
else
{
descriptor = new DescriptorBase();
}
break;
case FreeSatChannelInfoDescriptorTag:
descriptor = new FreeSatChannelInfoDescriptor();
break;
case ContentIdentifierDescriptorTag:
descriptor = new DVBContentIdentifierDescriptor();
break;
default:
descriptor = new DescriptorBase();
break;
}
descriptor.tag = (int)byteData[index];
index++;
descriptor.length = (int)byteData[index];
index++;
if (descriptor.Length != 0)
{
descriptor.Process(byteData, index);
}
return(descriptor);
}
private void processDescriptor(DescriptorBase descriptor)
{
switch (descriptor.Tag)
{
case DescriptorBase.ShortEventDescriptorTag:
DVBShortEventDescriptor shortEventDescriptor = descriptor as DVBShortEventDescriptor;
if (eventName == null)
{
processShortEventDescriptor(shortEventDescriptor);
}
else
{
if (RunParameters.Instance.InputLanguage == null)
{
processShortEventDescriptor(shortEventDescriptor);
}
else
{
if (shortEventDescriptor.LanguageCode == RunParameters.Instance.InputLanguage)
{
processShortEventDescriptor(shortEventDescriptor);
}
else
{
if (shortEventDescriptor.LanguageCode == "eng")
{
processShortEventDescriptor(shortEventDescriptor);
}
}
}
}
LanguageCode.RegisterUsage(shortEventDescriptor.LanguageCode);
break;
case DescriptorBase.ExtendedEventDescriptorTag:
DVBExtendedEventDescriptor extendedEventDescriptor = descriptor as DVBExtendedEventDescriptor;
if (extendedDescription == null)
{
processExtendedEventDescriptor(extendedEventDescriptor);
}
else
{
if (RunParameters.Instance.InputLanguage == null)
{
processExtendedEventDescriptor(extendedEventDescriptor);
}
else
{
if (extendedEventDescriptor.LanguageCode == RunParameters.Instance.InputLanguage)
{
processExtendedEventDescriptor(extendedEventDescriptor);
}
else
{
if (extendedEventDescriptor.LanguageCode == "eng")
{
processExtendedEventDescriptor(extendedEventDescriptor);
}
}
}
}
LanguageCode.RegisterUsage(extendedEventDescriptor.LanguageCode);
break;
case DescriptorBase.ComponentDescriptorTag:
if ((descriptor as DVBComponentDescriptor).ComponentTypeVideo != -1)
{
componentTypeVideo = (descriptor as DVBComponentDescriptor).ComponentTypeVideo;
}
if ((descriptor as DVBComponentDescriptor).ComponentTypeAudio != -1)
{
componentTypeAudio = (descriptor as DVBComponentDescriptor).ComponentTypeAudio;
}
if ((descriptor as DVBComponentDescriptor).ComponentTypeSubtitles != -1)
{
componentTypeSubtitles = (descriptor as DVBComponentDescriptor).ComponentTypeSubtitles;
}
break;
case DescriptorBase.ContentDescriptorTag:
contentType = (descriptor as DVBContentDescriptor).ContentType[0];
contentSubType = (descriptor as DVBContentDescriptor).ContentSubType[0];
break;
case DescriptorBase.ParentalRatingDescriptorTag:
DVBParentalRatingDescriptor parentalRatingDescriptor = descriptor as DVBParentalRatingDescriptor;
if (parentalRatingDescriptor.ParentalRatings != null)
{
parentalRating = (descriptor as DVBParentalRatingDescriptor).ParentalRatings[0];
}
break;
case DescriptorBase.ContentIdentifierDescriptorTag:
DVBContentIdentifierDescriptor contentIdentifierDescriptor = descriptor as DVBContentIdentifierDescriptor;
if (contentIdentifierDescriptor.IsSeriesLink)
{
seriesID = contentIdentifierDescriptor.ContentReference;
}
else
{
if (contentIdentifierDescriptor.IsEpisodeLink)
{
episodeID = contentIdentifierDescriptor.ContentReference;
}
}
break;
default:
if (RunParameters.Instance.DebugIDs.Contains("UNKNOWNDESCRIPTORS"))
{
Logger.Instance.Write("Unprocessed EIT descriptor: 0x" + descriptor.Tag.ToString("X"));
if (RunParameters.Instance.DebugIDs.Contains("LOGDESCRIPTORDATA"))
{
Logger.Instance.Dump("Descriptor Data", descriptor.Data, descriptor.Data.Length);
}
}
break;
}
}