// OutStreamWithCRC.h

#ifndef __OUTSTREAMWITHCRC_H

#define __OUTSTREAMWITHCRC_H

#include "../../../Common/MyCom.h"

#include "../../IStream.h"

extern "C"

{

#include "../../../../C/7zCrc.h"

}

class COutStreamWithCRC:

public ISequentialOutStream,

public CMyUnknownImp

{

CMyComPtr<ISequentialOutStream> _stream;

UInt64 _size;

UInt32 _crc;

bool _calculate;

public:

MY_UNKNOWN_IMP

STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize);

void SetStream(ISequentialOutStream *stream) { _stream = stream; }

void ReleaseStream() { _stream.Release(); }

void Init(bool calculate = true)

{

_size = 0;

_calculate = calculate;

_crc = CRC_INIT_VAL;

}

void InitCRC() { _crc = CRC_INIT_VAL; }

UInt64 GetSize() const { return _size; }

UInt32 GetCRC() const { return CRC_GET_DIGEST(_crc); }

};

#endif