867     STDMETHODIMP GetUnknown(REFGUID guidKey, REFIID riid, LPVOID* ppv)  in GetUnknown()  argument
870         return _spAttributes->GetUnknown(guidKey, riid, ppv);  in GetUnknown()
1078     STDMETHOD(QueryInterface)(REFIID riid, _Outptr_result_nullonfailure_ void **ppv)  in STDMETHOD()
1080     STDMETHOD(QueryInterface)(REFIID riid, void **ppv)  in STDMETHOD()
1083         if (ppv == nullptr) {  in STDMETHOD()
1086         (*ppv) = nullptr;  in STDMETHOD()
1089             return MarshalQI(riid, ppv);  in STDMETHOD()
1092             hr = RuntimeClassT::QueryInterface(riid, ppv);  in STDMETHOD()
1095                 *ppv = static_cast<IMFStreamSink*>(this);  in STDMETHOD()
1098                 *ppv = static_cast<IMFMediaEventGenerator*>(this);  in STDMETHOD()
1101                 *ppv = static_cast<IMFMediaTypeHandler*>(this);  in STDMETHOD()
1104                 *ppv = static_cast<IMFAttributes*>(this);  in STDMETHOD()
1107                 *ppv = static_cast<ICustomStreamSink*>(this);  in STDMETHOD()
1134     HRESULT MarshalQI(REFIID riid, LPVOID* ppv)  in MarshalQI()  argument
1150                 hr = m_spFTM.Get()->QueryInterface(riid, ppv);  in MarshalQI()
2430     STDMETHOD(QueryInterface)(REFIID riid, _Outptr_result_nullonfailure_ void **ppv)
2432     STDMETHOD(QueryInterface)(REFIID riid, void **ppv)
2435         if (ppv == nullptr) {
2438         (*ppv) = nullptr;
2442             (*ppv) = static_cast<IMFMediaSink*>(this);
2445             (*ppv) = static_cast<IMFClockStateSink*>(this);
2448             (*ppv) = static_cast<IMFAttributes*>(this);