94 lines
2.9 KiB
C++
94 lines
2.9 KiB
C++
#pragma once
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#include "../../common/File.h"
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namespace Jpeg2000
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{
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//-------------------------------------------------------------------------------------------------------------------------------
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// Byte input-output (Stream IO)
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//-------------------------------------------------------------------------------------------------------------------------------
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#define STREAM_READ 0x0001 // Поток открыт для чтения
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#define STREAM_WRITE 0x0002 // Поток открыт для записи
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typedef struct TByteIO
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{
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int nMode; // Чтение или запись ( STREAM_READ или OPJ_STREAM_WRITE )
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unsigned char *pBuffer; // Указатель на начало буфера
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int nLength; // Размер буфера в байтах
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unsigned char *pStart; // Указатель на начало потока
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unsigned char *pEnd; // Указатель на конец потока
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unsigned char *pCurPos; // Указатель не текущую позицию в потоке
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} ByteIO;
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class CReader
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{
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public:
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virtual ~CReader(void){}
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virtual bool Open(void* sStream, int nSizeStream){ return false; }
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virtual void Close(){}
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virtual void Read(BYTE* pData, int nSize){}
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virtual unsigned int Read(int nSize){ return 0; }
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virtual void Skip(int nSize){}
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virtual void Seek(int nPosition){}
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virtual unsigned int Write(unsigned int nValue, int nLen){ return 0; }
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virtual int Tell(){ return 0; }
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virtual int GetLeftSize(){ return 0; }
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virtual void* GetOwner(){ return NULL; }
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};
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class CReaderStream : CReader
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{
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public:
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CReaderStream(void);
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CReaderStream(void* sStream, int nSizeStream);
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virtual ~CReaderStream(void);
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bool Open(void* sStream, int nSizeStream);
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void Close();
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void Read(BYTE* pData, int nSize);
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unsigned int Read(int nSize);
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void Skip(int nSize);
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void Seek(int nPosition);
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unsigned int Write(unsigned int nValue, int nLen);
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int Tell();
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int GetLeftSize();
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void* GetOwner();
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protected:
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ByteIO* m_pStream;
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int m_nPosition;
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int m_nSkiped;
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int m_nSize;
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};
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class CReaderFile : CReader
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{
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public:
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CReaderFile(void);
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CReaderFile(const std::wstring& wsFileName, long lMode);
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virtual ~CReaderFile(void);
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bool Open(const std::wstring& wsFileName, int nSizeStream);
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void Close();
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void Read(BYTE* pData, int nSize);
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unsigned int Read(int nSize);
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void Skip(int nSize);
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void Seek(int nPosition);
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unsigned int Write(unsigned int nValue, int nLen);
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int Tell();
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int GetLeftSize();
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void* GetOwner();
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protected:
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NSFile::CFileBinary m_oFile;
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FILE* m_pFile;
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int m_nPosition;
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int m_nSkiped;
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int m_nSize;
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};
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} |