perplex.h
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: perplex.h,v 1.2.42.3 2004/07/09 01:48:00 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 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 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (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.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * 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