///////////////////////////////////////////////////////////////////////
//
// Audio Manager for the PRISMIQ Media Player
// Written by Bruce Waeyen
// Copyright (c) 2004. All Rights Reserved.
//
// This code may be used in compiled form in any way you desire. This
// file may be redistributed unmodified by any means PROVIDING it is
// not sold for profit without the authors written consent, and
// providing that this notice and the authors name and all copyright
// notices remains intact.
//
//
// This file is provided "as is" with no expressed or implied warranty.
// The author accepts no liability for any damage/loss of business that
// this product may cause.
//
//
//////////////////////////////////////////////////////////////////////
using System;
namespace CRC
{
/// <summary>
///
/// </summary>
public class CRC32
{
readonly static ulong[] crcLookup = new ulong[256]
{0x00000000, 0x77033096, 0xEE0E612C, 0x990D51BA,
0x076DC419, 0x706EF48F, 0xE963A535, 0x9E6095A3,
0x0EDF8832, 0x79DCB8A4, 0xE0D1E91E, 0x97D2D988,
0x09B24C2B, 0x7EB17CBD, 0xE7BC2D07, 0x90BF1D91,
0x1DB31064, 0x6AB020F2, 0xF3BD7148, 0x84BE41DE,
0x1ADED47D, 0x6DDDE4EB, 0xF4D0B551, 0x83D385C7,
0x136C9856, 0x646FA8C0, 0xFD62F97A, 0x8A61C9EC,
0x14015C4F, 0x63026CD9, 0xFA0F3D63, 0x8D0C0DF5,
0x3B6E20C8, 0x4C6D105E, 0xD56041E4, 0xA2637172,
0x3C03E4D1, 0x4B00D447, 0xD20D85FD, 0xA50EB56B,
0x35B1A8FA, 0x42B2986C, 0xDBBFC9D6, 0xACBCF940,
0x32DC6CE3, 0x45DF5C75, 0xDCD20DCF, 0xABD13D59,
0x26DD30AC, 0x51DE003A, 0xC8D35180, 0xBFD06116,
0x21B0F4B5, 0x56B3C423, 0xCFBE9599, 0xB8BDA50F,
0x2802B89E, 0x5F018808, 0xC60CD9B2, 0xB10FE924,
0x2F6F7C87, 0x586C4C11, 0xC1611DAB, 0xB6622D3D,
0x76DC4190, 0x01DF7106, 0x98D220BC, 0xEFD1102A,
0x71B18589, 0x06B2B51F, 0x9FBFE4A5, 0xE8BCD433,
0x7803C9A2, 0x0F00F934, 0x960DA88E, 0xE10E9818,
0x7F6E0DBB, 0x086D3D2D, 0x91606C97, 0xE6635C01,
0x6B6F51F4, 0x1C6C6162, 0x856130D8, 0xF262004E,
0x6C0295ED, 0x1B01A57B, 0x820CF4C1, 0xF50FC457,
0x65B0D9C6, 0x12B3E950, 0x8BBEB8EA, 0xFCBD887C,
0x62DD1DDF, 0x15DE2D49, 0x8CD37CF3, 0xFBD04C65,
0x4DB26158, 0x3AB151CE, 0xA3BC0074, 0xD4BF30E2,
0x4ADFA541, 0x3DDC95D7, 0xA4D1C46D, 0xD3D2F4FB,
0x436DE96A, 0x346ED9FC, 0xAD638846, 0xDA60B8D0,
0x44002D73, 0x33031DE5, 0xAA0E4C5F, 0xDD0D7CC9,
0x5001713C, 0x270241AA, 0xBE0F1010, 0xC90C2086,
0x576CB525, 0x206F85B3, 0xB962D409, 0xCE61E49F,
0x5EDEF90E, 0x29DDC998, 0xB0D09822, 0xC7D3A8B4,
0x59B33D17, 0x2EB00D81, 0xB7BD5C3B, 0xC0BE6CAD,
0xEDBC8320, 0x9ABFB3B6, 0x03B2E20C, 0x74B1D29A,
0xEAD14739, 0x9DD277AF, 0x04DF2615, 0x73DC1683,
0xE3630B12, 0x94603B84, 0x0D6D6A3E, 0x7A6E5AA8,
0xE40ECF0B, 0x930DFF9D, 0x0A00AE27, 0x7D039EB1,
0xF00F9344, 0x870CA3D2, 0x1E01F268, 0x6902C2FE,
0xF762575D, 0x806167CB, 0x196C3671, 0x6E6F06E7,
0xFED01B76, 0x89D32BE0, 0x10DE7A5A, 0x67DD4ACC,
0xF9BDDF6F, 0x8EBEEFF9, 0x17B3BE43, 0x60B08ED5,
0xD6D2A3E8, 0xA1D1937E, 0x38DCC2C4, 0x4FDFF252,
0xD1BF67F1, 0xA6BC5767, 0x3FB106DD, 0x48B2364B,
0xD80D2BDA, 0xAF0E1B4C, 0x36034AF6, 0x41007A60,
0xDF60EFC3, 0xA863DF55, 0x316E8EEF, 0x466DBE79,
0xCB61B38C, 0xBC62831A, 0x256FD2A0, 0x526CE236,
0xCC0C7795, 0xBB0F4703, 0x220216B9, 0x5501262F,
0xC5BE3BBE, 0xB2BD0B28, 0x2BB05A92, 0x5CB36A04,
0xC2D3FFA7, 0xB5D0CF31, 0x2CDD9E8B, 0x5BDEAE1D,
0x9B60C2B0, 0xEC63F226, 0x756EA39C, 0x026D930A,
0x9C0D06A9, 0xEB0E363F, 0x72036785, 0x05005713,
0x95BF4A82, 0xE2BC7A14, 0x7BB12BAE, 0x0CB21B38,
0x92D28E9B, 0xE5D1BE0D, 0x7CDCEFB7, 0x0BDFDF21,
0x86D3D2D4, 0xF1D0E242, 0x68DDB3F8, 0x1FDE836E,
0x81BE16CD, 0xF6BD265B, 0x6FB077E1, 0x18B34777,
0x880C5AE6, 0xFF0F6A70, 0x66023BCA, 0x11010B5C,
0x8F619EFF, 0xF862AE69, 0x616FFFD3, 0x166CCF45,
0xA00EE278, 0xD70DD2EE, 0x4E008354, 0x3903B3C2,
0xA7632661, 0xD06016F7, 0x496D474D, 0x3E6E77DB,
0xAED16A4A, 0xD9D25ADC, 0x40DF0B66, 0x37DC3BF0,
0xA9BCAE53, 0xDEBF9EC5, 0x47B2CF7F, 0x30B1FFE9,
0xBDBDF21C, 0xCABEC28A, 0x53B39330, 0x24B0A3A6,
0xBAD03605, 0xCDD30693, 0x54DE5729, 0x23DD67BF,
0xB3627A2E, 0xC4614AB8, 0x5D6C1B02, 0x2A6F2B94,
0xB40FBE37, 0xC30C8EA1, 0x5A01DF1B, 0x2D02EF8D};
readonly static ulong crc = 0xFFFFFFFF;
public CRC32()
{
//
// TODO: Add constructor logic here
//
}
public long CalculateCRC(byte[] by)
{
ulong ulCRC = crc;
long len;
len = by.Length;
for(long i = 0; i < len; i++)
{
ulCRC = (ulCRC >> 8) ^ crcLookup[(ulCRC & 0xFF) ^ by[i]];
}
return Convert.ToInt64( ulCRC ^ crc);
}
public long CalculateCRC(uint[] ui)
{
ulong ulCRC = crc;
long len;
len = ui.Length;
for(long i = 0; i < len; i++)
{
byte[] By = BitConverter.GetBytes(ui[i]);
for(long j = 0; j < 4; j++)
{
ulCRC = (ulCRC >> 8) ^ crcLookup[(ulCRC & 0xFF) ^ By[j]];
}
}
return Convert.ToInt64( ulCRC ^ crc);
}
}
}