seekpt.h

包裝ffmpeg中的codecs成為DirectShow中的transform filter

//------------------------------------------------------------------------------
// File: SeekPT.h
//
// Desc: DirectShow base classes.
//
// Copyright (c) 1992-2002 Microsoft Corporation.  All rights reserved.
//------------------------------------------------------------------------------


#ifndef __seekpt_h__
#define __seekpt_h__


class CSeekingPassThru : public ISeekingPassThru, public CUnknown
{
public:
    static CUnknown *CreateInstance(LPUNKNOWN pUnk, HRESULT *phr);
    CSeekingPassThru(TCHAR *pName, LPUNKNOWN pUnk, HRESULT *phr);
    ~CSeekingPassThru();

    DECLARE_IUNKNOWN
    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void ** ppv);

    STDMETHODIMP Init(BOOL bSupportRendering, IPin *pPin);

private:
    CPosPassThru              *m_pPosPassThru;
};

#endif