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112 lines
3.3 KiB
C#
112 lines
3.3 KiB
C#
/***************************************************************************
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FileSystem identifier and checker
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----------------------------------------------------------------------------
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Filename : Swapping.cs
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Version : 1.0
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Author(s) : Natalia Portillo
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Component : Program tools
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Revision : $Revision$
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Last change by : $Author$
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Date : $Date$
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--[ Description ] ----------------------------------------------------------
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Byte-swapping methods
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--[ License ] --------------------------------------------------------------
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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----------------------------------------------------------------------------
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Copyright (C) 2011-2014 Claunia.com
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****************************************************************************/
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//$Id$
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using System;
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namespace FileSystemIDandChk
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{
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static class Swapping
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{
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public static byte[] SwapTenBytes(byte[] source)
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{
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byte[] destination = new byte[8];
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destination[0] = source[9];
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destination[1] = source[8];
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destination[2] = source[7];
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destination[3] = source[6];
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destination[4] = source[5];
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destination[5] = source[4];
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destination[6] = source[3];
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destination[7] = source[2];
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destination[8] = source[1];
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destination[9] = source[0];
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return destination;
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}
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public static byte[] SwapEightBytes(byte[] source)
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{
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byte[] destination = new byte[8];
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destination[0] = source[7];
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destination[1] = source[6];
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destination[2] = source[5];
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destination[3] = source[4];
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destination[4] = source[3];
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destination[5] = source[2];
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destination[6] = source[1];
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destination[7] = source[0];
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return destination;
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}
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public static byte[] SwapFourBytes(byte[] source)
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{
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byte[] destination = new byte[4];
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destination[0] = source[3];
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destination[1] = source[2];
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destination[2] = source[1];
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destination[3] = source[0];
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return destination;
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}
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public static byte[] SwapTwoBytes(byte[] source)
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{
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byte[] destination = new byte[2];
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destination[0] = source[1];
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destination[1] = source[0];
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return destination;
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}
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public static UInt32 PDPFromLittleEndian(UInt32 x)
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{
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return ((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16);
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}
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public static UInt32 PDPFromBigEndian(UInt32 x)
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{
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return ((x & 0xff00ff) << 8) | ((x & 0xff00ff00) >> 8);
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}
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}
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}
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