/// <summary>
/// Parse the service description.
/// </summary>
/// <param name="byteData">The MPEG2 section containing the service description.</param>
/// <param name="index">Index of the first byte of the service description in the MPEG2 section.</param>
internal void Process(byte[] byteData, int index)
{
lastIndex = index;
try
{
serviceID = Utils.Convert2BytesToInt(byteData, lastIndex);
lastIndex += 2;
eitSchedule = ((int)byteData[lastIndex] & 0x02) != 0;
eitPresentFollowing = ((int)byteData[lastIndex] & 0x01) != 0;
lastIndex++;
runningStatus = (int)(byteData[lastIndex] >> 5);
scrambled = ((int)byteData[lastIndex] & 0x10) >> 4 == 1;
int descriptorLoopLength = ((byteData[lastIndex] & 0x0f) * 256) + (int)byteData[lastIndex + 1];
lastIndex += 2;
while (descriptorLoopLength != 0)
{
DescriptorBase descriptor = DescriptorBase.Instance(byteData, lastIndex, Scope.ServiceDescripton);
if (!descriptor.IsEmpty)
{
if (descriptor as DVBServiceDescriptor != null)
{
serviceDescriptor = descriptor as DVBServiceDescriptor;
}
else
{
if (descriptor as ServiceChannelDescriptor != null)
{
serviceChannelDescriptor = descriptor as ServiceChannelDescriptor;
}
}
lastIndex = descriptor.Index;
descriptorLoopLength -= descriptor.TotalLength;
}
else
{
lastIndex += DescriptorBase.MinimumDescriptorLength;
descriptorLoopLength -= DescriptorBase.MinimumDescriptorLength;
}
}
Validate();
}
catch (IndexOutOfRangeException)
{
throw (new ArgumentOutOfRangeException("The DVB Service Description message is short"));
}
}
/// <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);
}
/// <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);
}
/// <summary>
/// Parse the service description.
/// </summary>
/// <param name="byteData">The MPEG2 section containing the service description.</param>
/// <param name="index">Index of the first byte of the service description in the MPEG2 section.</param>
internal void Process(byte[] byteData, int index)
{
lastIndex = index;
try
{
serviceID = Utils.Convert2BytesToInt(byteData, lastIndex);
lastIndex += 2;
eitSchedule = ((int)byteData[lastIndex] & 0x02) != 0;
eitPresentFollowing = ((int)byteData[lastIndex] & 0x01) != 0;
lastIndex++;
runningStatus = (int)(byteData[lastIndex] >> 5);
scrambled = ((int)byteData[lastIndex] & 0x10) >> 4 == 1;
int descriptorLoopLength = ((byteData[lastIndex] & 0x0f) * 256) + (int)byteData[lastIndex + 1];
lastIndex += 2;
while (descriptorLoopLength != 0)
{
DescriptorBase descriptor = DescriptorBase.Instance(byteData, lastIndex, Scope.ServiceDescripton);
if (!descriptor.IsEmpty)
{
if (descriptor as DVBServiceDescriptor != null)
serviceDescriptor = descriptor as DVBServiceDescriptor;
else
{
if (descriptor as ServiceChannelDescriptor != null)
serviceChannelDescriptor = descriptor as ServiceChannelDescriptor;
}
lastIndex = descriptor.Index;
descriptorLoopLength -= descriptor.TotalLength;
}
else
{
lastIndex += DescriptorBase.MinimumDescriptorLength;
descriptorLoopLength -= DescriptorBase.MinimumDescriptorLength;
}
}
Validate();
}
catch (IndexOutOfRangeException)
{
throw (new ArgumentOutOfRangeException("The DVB Service Description message is short"));
}
}