IPMT Interface

The IPMT interface enables the client to get information from a program map table (PMT). The IAtscPsipParser::GetPMT method returns a pointer to this interface.

The PMT may contain one or more table-wide descriptors. In addition, each record in the PMT may have one or more descriptors. To get the table-wide descriptors, use the GetTableDescriptorByIndex or GetTableDescriptorByTag method. To get the record descriptors, use the GetRecordDescriptorByIndex or GetRecordDescriptorByTag method.

Methods

The IPMT interface inherits the methods of the IUnknown interface.

In addition, IPMT defines the following methods.

Method	Description
ConvertNextToCurrent	Converts a next table to a current table.
GetCountOfRecords	Returns the number of records in the PMT.
GetCountOfTableDescriptors	Returns the number of table-wide descriptors in the PMT.
GetNextTable	Retrieves the next table that follows the current table.
GetPcrPid	Returns the packet identifier (PID) of the packets that contain the Program Clock Reference (PCR) fields for this program.
GetProgramNumber	Returns the program number for the PMT.
GetRecordCountOfDescriptors	Returns the number of descriptors for a record in the PMT.
GetRecordDescriptorByIndex	Retrieves a descriptor for a specified record in the PMT.
GetRecordDescriptorByTag	Searches a record in the PMT for a descriptor with a specified descriptor tag.
GetRecordElementaryPid	Returns the PID for a given elementary stream in the program.
GetRecordStreamType	Returns the stream type for a given elementary stream in the program.
GetTableDescriptorByIndex	Retrieves a table-wide descriptor for the PMT.
GetTableDescriptorByTag	Searches the PMT for a table-wide descriptor with the specified descriptor tag.
GetVersionNumber	Returns the version number for the PMT.
Initialize	Initializes the object.
QueryMPEInfo	Returns the Multi-Protocol Encapsulation (MPE) information in the PMT, if any.
QueryServiceGatewayInfo	Returns the DSM-CC service gateway information in the PMT, if any.
RegisterForNextTable	Registers the client to be notified when a next table arrives that will replace the current table.
RegisterForWhenCurrent	Registers the client to be notified when the table becomes current.

Requirements

Header

Declared in Mpeg2PsiParser.h.

See Also

BDA Interfaces

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Build date: 12/4/2008