other-licenses/7zstub/src/CPP/Common/XzCrc64Reg.cpp


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// XzCrc64Reg.cpp

#include "StdAfx.h"

#include "../../C/CpuArch.h"
#include "../../C/XzCrc64.h"

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

#include "../7zip/Common/RegisterCodec.h"

class CXzCrc64Hasher:
  public IHasher,
  public CMyUnknownImp
{
  UInt64 _crc;
  Byte mtDummy[1 << 7];

public:
  CXzCrc64Hasher(): _crc(CRC64_INIT_VAL) {}

  MY_UNKNOWN_IMP1(IHasher)
  INTERFACE_IHasher(;)
};

STDMETHODIMP_(void) CXzCrc64Hasher::Init() throw()
{
  _crc = CRC64_INIT_VAL;
}

STDMETHODIMP_(void) CXzCrc64Hasher::Update(const void *data, UInt32 size) throw()
{
  _crc = Crc64Update(_crc, data, size);
}

STDMETHODIMP_(void) CXzCrc64Hasher::Final(Byte *digest) throw()
{
  UInt64 val = CRC64_GET_DIGEST(_crc);
  SetUi64(digest, val);
}

REGISTER_HASHER(CXzCrc64Hasher, 0x4, "CRC64", 8)