perplex.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _HXPERPLEX_H_
- #define _HXPERPLEX_H_
- //****************************************************************************
- //****************************** INCLUDE FILES *******************************
- //****************************************************************************
- #include "hxtypes.h"
- #include "hxstring.h"
- #include "timerep.h"
- #include "ihxperplex.h"
- #include "unkimp.h"
- //****************************************************************************
- //************************** CONSTANT DEFINITIONS ****************************
- //****************************************************************************
- #define Perplex_BASE 41
- #define Perplex_PER_ULONG32 6
- #define Perplex_ALIGNMENT 4
- #define DEFAULT_GROW_SIZE 1024 // for dynamic buffer perplex classes
- //****************************************************************************
- //************************** FORWARD DECLARATIONS ****************************
- //****************************************************************************
- class CHXPerplex;
- class CHXSimpleBuffer; // crappy little buffer class used by CHXInfoEncoder
- //****************************************************************************
- //****************************** CHXPerplex **********************************
- //****************************************************************************
- class CHXPerplex : public IHXPerplex,
- public CUnknownIMP
- {
- // the IUnknown implementation declaration
- DECLARE_UNKNOWN(CHXPerplex)
- public:
- CHXPerplex();
- ~CHXPerplex();
- STDMETHOD(Perplex) (THIS_ IHXBuffer *pInBuf, IHXBuffer *pOutBuf);
- STDMETHOD(DePerplex) (THIS_ IHXBuffer *pInBuf, IHXBuffer *pOutBuf);
-
- // basic routines for hex/perplexing, used when this class doesn't
- // meet your needs.
- static void DumpToPerplex(char* Perplex, UINT32 ulPerplexSize, UCHAR* Bits, UINT32 nSize);
- static UINT32 SetFromPerplex(const char* Perplex, UCHAR* Bits, UINT32 nSize);
- protected:
- static void DumpToMIMEBase64(char* MIMEBase64, const char* Bits, UINT32 nSize);
- static UINT32 SetFromMIMEBase64(const char* MIMEBase64, char* Bits, UINT32 nSize);
- static char MapToPerplex(UCHAR Perplex);
- static UCHAR MapFromPerplex(char Perplex);
- static void ToPerplex(ULONG32 Input, char* Perplex);
- static ULONG32 FromPerplex(const char* Perplex);
- static char MapToMIMEBase64(UCHAR MIMEBase64);
- static UCHAR MapFromMIMEBase64(char MIMEBase64);
- };
- //****************************************************************************
- //**************************** CHXPerplexBuffer ******************************
- //****************************************************************************
- // A simple buffer. There is no implicit access/bounds checking,
- // you have to do that yourself or use the 'Safexxxxx()' methods.
- // It's actual size is usually not what you set with resizeBuffer(),
- // since the size will be rounded up to the nearest 'GrowBy' size.
- class CHXPerplexBuffer
- {
- public:
- CHXPerplexBuffer();
- CHXPerplexBuffer(UINT32 nSize, UINT32 nGrowBy=DEFAULT_GROW_SIZE);
- ~CHXPerplexBuffer();
- inline UCHAR* GetPtr() const { return(m_pData); }
- inline UCHAR* GetPtrAt(UINT32 nOffset) const { return(m_pData+nOffset); }
- inline UCHAR GetDataAt(UINT32 nOffset) const { return(*(m_pData+nOffset)); }
- inline UINT32 GetSize() const { return(m_nSize); }
- inline void SetUCHAR(UINT32 off, UCHAR x) { *(m_pData+off)=x; }
- inline void SetUINT16(UINT32 off, UINT16 x) { *((UINT16*)(m_pData+off))=x; }
- inline BOOL IsValidOffset(UINT32 n) const;
- // make sure that Offset is within the buffer.
- // If not, the buffer is automatically resized.
- BOOL EnsureValidOffset(UINT32 n);
- // copy data into buffer, dynamically growing buffer if needed.
- BOOL SafeMemCopy(UINT32 nOffset, const void* data, UINT32 len);
- // no bounds checking here.
- inline void MemCopy(UINT32 nOffset, const void* data, UINT32 len)
- {
- memcpy(m_pData+nOffset, data, (int)len); /* Flawfinder: ignore */
- }
- // grow/shink buffer (does memcpy)
- BOOL Resize(UINT32 nSize);
- void Free();
- protected:
- UINT32 RoundUpToGrowSize(UINT32 nSize);
- UINT32 m_nSize;
- UCHAR* m_pData;
- UINT32 m_nGrowBy;
- };
- #endif