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IDVB_NIT::GetRecordDescriptorByIndex

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Microsoft DirectShow 9.0

IDVB_NIT::GetRecordDescriptorByIndex

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

The GetRecordDescriptorByIndex method retrieves a descriptor for a specified record in the NIT.

Syntax

  HRESULT GetRecordDescriptorByIndex(
  DWORD  dwRecordIndex,
  DWORD  dwIndex,
  IGenericDescriptor**  ppDescriptor
);

Parameters

dwRecordIndex

[in]  Specifies the record number, indexed from zero. Call the IDVB_NIT::GetCountOfRecords method to get the number of records in the NIT.

dwIndex

[in]  Specifies which descriptor to retrieve, indexed from zero. Call the IDVB_NIT::GetRecordCountOfDescriptors method to get the number of descriptors for a particular record.

ppDescriptor

[out]  Address of a variable that receives an IGenericDescriptor interface pointer. Use this interface to retrieve the information in the descriptor. The caller must release the interface.

Return Values

The method returns an HRESULT. Possible values include those in the following table.

Return code Description
E_POINTER NULL pointer argument.
MPEG2_E_OUT_OF_BOUNDS Index out of bounds.
S_OK The method succeeded.

Requirements

Header: Include dvbsiparser.h.

See Also