133 lines
3.4 KiB
C++
133 lines
3.4 KiB
C++
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1995.
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//
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// File: CCodeFt.hxx
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//
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// Contents:
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//
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// Classes:
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//
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// Functions:
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//
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// History: 04-29-97 DanpoZ (Danpo Zhang) Created
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//
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//----------------------------------------------------------------------------
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#ifndef _CCODEFT_HXX_
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#define _CCODEFT_HXX_
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#include <urlmon.h>
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#include <urlmki.h>
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//+---------------------------------------------------------------------------
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//
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// Class: CStdZFilter
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//
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// Purpose: Standard MS Compressor/DeCompressor
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// It support deflate and gzip schema
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//
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// Interface: [support all IDataFilter]
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//
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// History: 04-29-97 DanpoZ (Danpo Zhang) Created
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//
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//----------------------------------------------------------------------------
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class CStdZFilter : public IDataFilter
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{
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public:
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// IUnknown methods
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STDMETHODIMP QueryInterface(REFIID iid, void **ppvObj);
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STDMETHODIMP_(ULONG) AddRef(void);
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STDMETHODIMP_(ULONG) Release(void);
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STDMETHODIMP DoEncode(
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DWORD dwFlags,
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LONG lInBufferSize,
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BYTE* pbInBuffer,
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LONG lOutBufferSize,
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BYTE* pbOutBuffer,
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LONG lInBytesAvailable,
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LONG* plInBytesRead,
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LONG* plOutBytesWritten,
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DWORD dwReserved
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);
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STDMETHODIMP DoDecode(
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DWORD dwFlags,
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LONG lInBufferSize,
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BYTE* pbInBuffer,
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LONG lOutBufferSize,
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BYTE* pbOutBuffer,
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LONG lInBytesAvailable,
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LONG* plInBytesRead,
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LONG* plOutBytesWritten,
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DWORD dwReserved
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);
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STDMETHODIMP SetEncodingLevel(DWORD dwEncLevel);
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// ctor and dtor
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CStdZFilter(ULONG ulSchema);
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~CStdZFilter();
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// init
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HRESULT InitFilter();
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private:
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CRefCount _CRefs;
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void* _pEncodeCtx;
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void* _pDecodeCtx;
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INT _cEncLevel;
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ULONG _ulSchema;
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};
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//+---------------------------------------------------------------------------
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//
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// Class: CEncodingFilterFactory
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//
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// Purpose: Factory class that creates DataFilter
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//
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// Interface: [support all IEncodingFilterFactory]
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// [Creates IDataFilter object]
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//
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// History: 04-29-97 DanpoZ (Danpo Zhang) Created
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//
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//----------------------------------------------------------------------------
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class CEncodingFilterFactory : public IEncodingFilterFactory
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{
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public:
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// IUnknown methods
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STDMETHODIMP QueryInterface(REFIID iid, void **ppvObj);
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STDMETHODIMP_(ULONG) AddRef(void);
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STDMETHODIMP_(ULONG) Release(void);
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STDMETHODIMP FindBestFilter(
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LPCWSTR pwzCodeIn,
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LPCWSTR pwzCodeOut,
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DATAINFO info,
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IDataFilter** ppDF
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);
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STDMETHODIMP GetDefaultFilter(
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LPCWSTR pwzCodeIn,
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LPCWSTR pwzCodeOut,
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IDataFilter** ppDF
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);
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// ctor and dtor
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CEncodingFilterFactory();
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~CEncodingFilterFactory();
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private:
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STDMETHODIMP LookupClsIDFromReg(
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LPCWSTR pwzCodeIn,
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LPCWSTR pwzCodeOut,
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CLSID* pclsid,
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DWORD dwFlags
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);
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private:
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CRefCount _CRefs;
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};
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#endif
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