ig_pTopology      466 modules/videoio/src/cap_msmf.cpp     IMFTopology *ig_pTopology;
ig_pTopology     1235 modules/videoio/src/cap_msmf.cpp     SafeRelease(&ig_pTopology);
ig_pTopology     1405 modules/videoio/src/cap_msmf.cpp     SafeRelease(&ig_pTopology);
ig_pTopology     1452 modules/videoio/src/cap_msmf.cpp     CHECK_HR(hr = CreateTopology(pSource, pSinkActivate.Get(), &ig_pTopology));
ig_pTopology     1462 modules/videoio/src/cap_msmf.cpp         SafeRelease(&ig_pTopology);
ig_pTopology     1478 modules/videoio/src/cap_msmf.cpp     HRESULT hr = ig_pSession->SetTopology(0, ig_pTopology);