windows-nt/Source/XPSP1/NT/multimedia/published/dxmdev/dshowdev/base/amextra.h

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2020-09-26 03:20:57 -05:00
//------------------------------------------------------------------------------
// File: AMExtra.h
//
// Desc: DirectShow base classes.
//
// Copyright (c) 1992-2001 Microsoft Corporation. All rights reserved.
//------------------------------------------------------------------------------
#ifndef __AMEXTRA__
#define __AMEXTRA__
// Simple rendered input pin
//
// NOTE if your filter queues stuff before rendering then it may not be
// appropriate to use this class
//
// In that case queue the end of stream condition until the last sample
// is actually rendered and flush the condition appropriately
class CRenderedInputPin : public CBaseInputPin
{
public:
CRenderedInputPin(TCHAR *pObjectName,
CBaseFilter *pFilter,
CCritSec *pLock,
HRESULT *phr,
LPCWSTR pName);
#ifdef UNICODE
CRenderedInputPin(CHAR *pObjectName,
CBaseFilter *pFilter,
CCritSec *pLock,
HRESULT *phr,
LPCWSTR pName);
#endif
// Override methods to track end of stream state
STDMETHODIMP EndOfStream();
STDMETHODIMP EndFlush();
HRESULT Active();
HRESULT Run(REFERENCE_TIME tStart);
protected:
// Member variables to track state
BOOL m_bAtEndOfStream; // Set by EndOfStream
BOOL m_bCompleteNotified; // Set when we notify for EC_COMPLETE
private:
void DoCompleteHandling();
};
#endif // __AMEXTRA__