| Microsoft DirectX 8.1 (C++) |
This interface is implemented on each output pin of the MPEG-2 Demultiplexer filter (Demux) and is used in transport stream mode only. It is called by applications or other filters to associate the pin with one or more Packet IDs (PID). Once a PID has been mapped, the Demux will deliver all packets with that ID to the output pin. This interface is not exposed when the filter is playing back a file (pull-mode).
For program streams, use the IMPEG2StreamIdMap interface.
In addition to the methods inherited from IUnknown, the IMPEG2PIDMap interface exposes the following methods.
| Method | Description |
| MapPID | Maps the packets of a specified PID to the pin. |
| UnmapPID | Unmaps the PID mapping created in a previous call to MapPID. |
| EnumPIDMap | Returns a collection of all the currently mapped PIDs on this pin. |