www.pudn.com > WavDest.rar > wavdest.h

//------------------------------------------------------------------------------ 
// File: WavDest.h 
// 
// Desc: DirectShow sample code - header file for WAV audio file writer filter. 
// 
// Copyright (c) Microsoft Corporation.  All rights reserved. 
//------------------------------------------------------------------------------ 
 
 
#pragma warning(disable: 4097 4511 4512 4514 4705) 
 
class CWavDestOutputPin : public CTransformOutputPin 
{ 
public: 
    CWavDestOutputPin(CTransformFilter *pFilter, HRESULT * phr); 
 
    STDMETHODIMP EnumMediaTypes( IEnumMediaTypes **ppEnum ); 
    HRESULT CheckMediaType(const CMediaType* pmt); 
}; 
 
class CWavDestFilter : public CTransformFilter 
{ 
 
public: 
 
    DECLARE_IUNKNOWN; 
   
    CWavDestFilter(LPUNKNOWN pUnk, HRESULT *pHr); 
    ~CWavDestFilter(); 
    static CUnknown * WINAPI CreateInstance(LPUNKNOWN punk, HRESULT *pHr); 
 
    HRESULT Transform(IMediaSample *pIn, IMediaSample *pOut); 
    HRESULT Receive(IMediaSample *pSample); 
 
    HRESULT CheckInputType(const CMediaType* mtIn) ; 
    HRESULT CheckTransform(const CMediaType *mtIn,const CMediaType *mtOut); 
    HRESULT GetMediaType(int iPosition, CMediaType *pMediaType) ; 
 
    HRESULT DecideBufferSize(IMemAllocator *pAlloc, 
                             ALLOCATOR_PROPERTIES *pProperties); 
 
    HRESULT StartStreaming(); 
    HRESULT StopStreaming(); 
 
    HRESULT CompleteConnect(PIN_DIRECTION direction,IPin *pReceivePin) { return S_OK; } 
 
private: 
 
    HRESULT Copy(IMediaSample *pSource, IMediaSample *pDest) const; 
    HRESULT Transform(IMediaSample *pMediaSample); 
    HRESULT Transform(AM_MEDIA_TYPE *pType, const signed char ContrastLevel) const; 
 
    ULONG m_cbWavData; 
    ULONG m_cbHeader; 
};