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//*@@@+++@@@@******************************************************************
//
// Microsoft Windows Media Foundation
// Copyright (C) Microsoft Corporation. All rights reserved.
//
//*@@@---@@@@******************************************************************
//
#pragma once
class CMediaEventGenerator :
public IMFMediaEventGenerator
{
public:
//
// IUnknown
//
STDMETHOD_(ULONG, AddRef)(
void
);
STDMETHOD_(ULONG, Release)(
void
);
STDMETHOD(QueryInterface)(
_In_ REFIID iid,
_COM_Outptr_ void** ppv);
//
// IMFMediaEventGenerator
//
STDMETHOD(BeginGetEvent)(
_In_ IMFAsyncCallback* pCallback,
_In_ IUnknown* pState
);
STDMETHOD(EndGetEvent)(
_In_ IMFAsyncResult* pResult,
_Outptr_result_maybenull_ IMFMediaEvent** ppEvent
);
STDMETHOD(GetEvent)(
_In_ DWORD dwFlags,
_Outptr_result_maybenull_ IMFMediaEvent** ppEvent
);
STDMETHOD(QueueEvent)(
_In_ MediaEventType met,
_In_ REFGUID extendedType,
_In_ HRESULT hrStatus,
_In_opt_ const PROPVARIANT* pvValue
);
STDMETHOD(QueueEvent)(
_In_ IMFMediaEvent* pEvent
);
protected:
CMediaEventGenerator(
void
);
virtual ~CMediaEventGenerator (
void
);
//
// Utility Methods
//
STDMETHOD(ShutdownEventGenerator)(
void
);
STDMETHOD (InitMediaEventGenerator)(
void
);
__inline HRESULT (CheckShutdown)(
void
) const
{
return (m_bShutdown? MF_E_SHUTDOWN : S_OK);
}
private:
long m_nRefCount;
CCritSec m_critSec;
IMFMediaEventQueue* m_pQueue;
BOOL m_bShutdown;
};
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