How to use h.264Decoder in mediafoundation Topology

Question

I am streaming my content using H.264 encoder and wish to decode the content using H.264 decoder.
The encoding topology is like

Source --> H.264 Encoder --> NetDump

and the decoding topology is like

NetSource --> H.264 Decoder --> EVR

We are able to make our encoding topology but stuck up in making the decoding topology.
The documentation says that we need to set the input and output media type and start calling ProcessInput and ProcessOutput continously.

But there is a confusion on who will be calling the processinput and ProcessOutput..is it called by the topology framework, or we need to implement
a class creating the H.264 decoder and then calling ProcessInput and ProcessOutput in a separate thread.

Answer 1

If you are using the MF media session (IMFMediaSession), the session will call ProcessInput and ProcessOutput for you.  You only need to call ProcessInput/ProccessOutput yourself if you are using an MFT outside of the MF media session.