?? memfile.h
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/*****************************************************************************
* RelayFax Open Source Project
* Copyright 1996-2004 Alt-N Technologies, Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the RelayFax Open
* Source License. A copy of this license is available in file LICENSE
* in the top-level directory of the distribution.
*
* RelayFax is a registered trademark of Alt-N Technologies, Ltd.
*
* Individual files and/or contributed packages may be copyright by
* other parties and subject to additional restrictions.
*****************************************************************************/
#ifndef MEMFILE_H
#define MEMFILE_H
// CMemFile - unnamed memory mapped file implementation
class CMemFile
{
public:
CMemFile();
~CMemFile();
enum CMemFileContants {MaxSize = 1000000};
void MarkDataPtr( bool bStart ) { if(bStart) {m_dataPtr = 0; m_dataLen = 0;} m_dataMark = bStart; };
int ReadPage( TIFF* in, int nEncodeType );
unsigned char* GetData( unsigned int nOffset ) { return m_buf + m_dataPtr + nOffset; };
unsigned int GetDataLen( void ) { return m_dataLen; };
void Clear() { m_off = 0; m_size = 0; m_dataPtr = 0; m_dataLen = 0; };
void AddDataByte( unsigned char b);
unsigned int Seek( unsigned int offset, int whence );
int Read( void *buf, int size );
int Write( void* buf, int size );
unsigned int Size(void) { return m_size; };
int Close(void);
protected:
unsigned char *m_buf; /* Memory for each open buf */
unsigned int m_off; /* File pointer for each buf */
unsigned int m_size; /* Count of bytes allocated for each buf */
HANDLE m_hMapping;
unsigned int m_dataPtr;
unsigned int m_dataLen;
bool m_dataMark;
};
#endif //MEMFILE_H
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