IDvbCableDeliverySystemDescriptor Interface

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This topic applies to Update Rollup 2 for Microsoft Windows XP Media Center Edition 2005 and later.

The IDvbCableDeliverySystemDescriptor interface enables the client to get a cable delivery system descriptor from a DVB stream. The cable delivery system descriptor may be present in the network information table (NIT). For more information, refer to ETSI EN 300 468.

Methods

The IDvbCableDeliverySystemDescriptor interface inherits the methods of the IUnknown interface.

In addition, IDvbCableDeliverySystemDescriptor defines the following methods.

Method Description

GetFECInner

Returns the inner forward error correction (FEC) scheme.

GetFECOuter

Returns the output FEC scheme.

GetFrequency

Returns the frequency.

GetLength

Returns the length of the descriptor body.

GetModulation

Returns the modulation scheme.

GetSymbolRate

Returns the symbol rate.

GetTag

Returns the descriptor tag.

Remarks

To obtain a pointer to this interface, do the following:

  1. Call IDvbSiParser::GetNIT to get the IDVB_NIT interface.
  2. Call IDVB_NIT::GetRecordDescriptorByTag and pass in the cable delivery system descriptor tag (0x44). If the descriptor is present, the method returns an IGenericDescriptor pointer.
  3. Query the returned IGenericDescriptor pointer for the IDvbCableDeliverySystemDescriptor interface.

Requirements

Header Declared in Dvbsiparser.h.

See Also

BDA Interfaces

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Build date: 12/4/2008