Adding a Video Effect to the camera stream

[kulka193]

Hi , I want to modify the HWMediaSource/HWMediaStream such that the samples are processed with a custom MFT based Video Effect. I built out and installed a UMDF driver based on HWMediaSource. I also have a custom MFT implemented as a separate DLL project which I am then enumerating in my IMFMediaStream class(using the CLSID and MFT category). I tested that My effect is enumerated and registered properly. But my attempt at the approach is still not adding any Video Effect to the stream when I launch the camera. I followed this PR for reference on how to include IMFTransform attribute and call the MFT functions in IMFMediaStream class. Any leads on the implementation and how to get it working?