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////////////////////////////////////////////////////////////////////////////////////////
//
// Nestopia - NES/Famicom emulator written in C++
//
// Copyright (C) 2003-2008 Martin Freij
//
// This file is part of Nestopia.
//
// Nestopia is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// Nestopia is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Nestopia; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
////////////////////////////////////////////////////////////////////////////////////////
#ifndef NST_CHECKSUM_H
#define NST_CHECKSUM_H
#ifdef NST_PRAGMA_ONCE
#pragma once
#endif
#include "NstCore.hpp"
#include "NstSha1.hpp"
namespace Nes
{
namespace Core
{
class Checksum : public ImplicitBool<Checksum>
{
public:
Checksum();
Checksum(const byte*,dword);
void Clear();
void Compute(const byte*,dword);
void Recompute(const byte*,dword);
bool operator == (const Checksum&) const;
bool operator ! () const;
private:
Sha1::Key sha1;
dword crc32;
public:
bool operator != (const Checksum& checksum) const
{
return !(*this == checksum);
}
Sha1::Key::Digest GetSha1() const
{
return sha1.GetDigest();
}
dword GetCrc() const
{
return crc32;
}
};
}
}
#endif
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