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//------------------------------------------------------------------------------
// File: SysClock.h
//
// Desc: DirectShow base classes - defines a system clock implementation of
// IReferenceClock.
//
// Copyright (c) 1992-2001 Microsoft Corporation. All rights reserved.
//------------------------------------------------------------------------------
#ifndef __SYSTEMCLOCK__
#define __SYSTEMCLOCK__
//
// Base clock. Uses timeGetTime ONLY
// Uses most of the code in the base reference clock.
// Provides GetTime
//
class CSystemClock : public CBaseReferenceClock, public IAMClockAdjust, public IPersist
{
public:
// We must be able to create an instance of ourselves
static CUnknown * WINAPI CreateInstance(__inout_opt LPUNKNOWN pUnk, __inout HRESULT *phr);
CSystemClock(__in_opt LPCTSTR pName, __inout_opt LPUNKNOWN pUnk, __inout HRESULT *phr);
DECLARE_IUNKNOWN
STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, __deref_out void ** ppv);
// Yield up our class id so that we can be persisted
// Implement required Ipersist method
STDMETHODIMP GetClassID(__out CLSID *pClsID);
// IAMClockAdjust methods
STDMETHODIMP SetClockDelta(REFERENCE_TIME rtDelta);
}; //CSystemClock
#endif /* __SYSTEMCLOCK__ */
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