LibHac/LibHac.Nand/DiscUtils.Core/Internal/Crc32.cs

//
// Copyright (c) 2008-2011, Kenneth Bell
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// DEALINGS IN THE SOFTWARE.
//

namespace DiscUtils.Internal
{
    internal abstract class Crc32
    {
        protected readonly uint[] Table;
        protected uint _value;

        protected Crc32(uint[] table)
        {
            Table = table;
            _value = 0xFFFFFFFF;
        }

        public uint Value
        {
            get { return _value ^ 0xFFFFFFFF; }
        }

        public abstract void Process(byte[] buffer, int offset, int count);
    }
}