InStreamWithCRC.h
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// InStreamWithCRC.h
#ifndef __INSTREAMWITHCRC_H
#define __INSTREAMWITHCRC_H
#include "../../../Common/MyCom.h"
#include "../../IStream.h"
extern "C"
{
#include "../../../../C/7zCrc.h"
}
class CSequentialInStreamWithCRC:
public ISequentialInStream,
public CMyUnknownImp
{
public:
MY_UNKNOWN_IMP
STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
private:
CMyComPtr<ISequentialInStream> _stream;
UInt64 _size;
UInt32 _crc;
bool _wasFinished;
public:
void SetStream(ISequentialInStream *stream) { _stream = stream; }
void Init()
{
_size = 0;
_wasFinished = false;
_crc = CRC_INIT_VAL;
}
void ReleaseStream() { _stream.Release(); }
UInt32 GetCRC() const { return CRC_GET_DIGEST(_crc); }
UInt64 GetSize() const { return _size; }
bool WasFinished() const { return _wasFinished; }
};
class CInStreamWithCRC:
public IInStream,
public CMyUnknownImp
{
public:
MY_UNKNOWN_IMP1(IInStream)
STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition);
private:
CMyComPtr<IInStream> _stream;
UInt64 _size;
UInt32 _crc;
bool _wasFinished;
public:
void SetStream(IInStream *stream) { _stream = stream; }
void Init()
{
_size = 0;
_wasFinished = false;
_crc = CRC_INIT_VAL;
}
void ReleaseStream() { _stream.Release(); }
UInt32 GetCRC() const { return CRC_GET_DIGEST(_crc); }
UInt64 GetSize() const { return _size; }
bool WasFinished() const { return _wasFinished; }
};
#endif