IPMT Interface
| Microsoft DirectShow 9.0 |
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.
In addition to the methods inherited from IUnknown, the IPMT interface exposes 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: Include Mpeg2PsiParser.h.
See Also