/// <summary>
/// Constructor for custom 32-bit CRC object - Don't use this unless you really know
/// what the heck you are doing.
/// </summary>
/// <param name="KeyPoly">Custom key polynomial</param>
/// <param name="InitialRegVal">Initial register value</param>
/// <param name="FinalizeXorVal">Value that is xor'd with final CRC</param>
/// <param name="Reflected">Indicates whether the algorithm expects reflected input bytes</param>
/// <param name="BytesShiftedPerCycle">How many bytes are handled at a time (1 or 2).
/// <param name="CrcType">Indicates whether CRC is incremental (incomplete) or oneshot (complete).</param>
/// <param name="CrcCalcMethod">How many bytes are handled at a time (1 or 2).
/// The internal table size is determined by this parameter, 1 is most common (leads to 1kbyte table).</param>
public CRC32(UInt32 KeyPoly,
UInt32 InitialRegVal,
UInt32 FinalizeXorVal,
Boolean Reflected,
Int32 BytesShiftedPerCycle,
CRCType CrcType,
CRCCalcMethod CrcCalcMethod)
{
lut = null;
poly = KeyPoly;
initReg = InitialRegVal;
currCRC = initReg;
finalReg = FinalizeXorVal;
reflected = Reflected;
NumBytesPerRegShift = BytesShiftedPerCycle;
this.CrcType = CrcType;
this.CrcCalcMethod = CrcCalcMethod;
// Build the look up table
BuildTable();
// Call reset to set initial value for currCRC;
ResetCRC();
}
/// <summary>
/// Constructor for custom 32-bit CRC object - Don't use this unless you really know
/// what the heck you are doing.
/// </summary>
/// <param name="KeyPoly">Custom key polynomial</param>
/// <param name="InitialRegVal">Initial register value</param>
/// <param name="FinalizeXorVal">Value that is xor'd with final CRC</param>
/// <param name="Reflected">Indicates whether the algorithm expects reflected input bytes</param>
/// <param name="BytesShiftedPerCycle">How many bytes are handled at a time (1 or 2).
/// <param name="CrcType">Indicates whether CRC is incremental (incomplete) or oneshot (complete).</param>
/// <param name="CrcCalcMethod">How many bytes are handled at a time (1 or 2).
/// The internal table size is determined by this parameter, 1 is most common (leads to 1kbyte table).</param>
public CRC32( UInt32 KeyPoly,
UInt32 InitialRegVal,
UInt32 FinalizeXorVal,
Boolean Reflected,
Int32 BytesShiftedPerCycle,
CRCType CrcType,
CRCCalcMethod CrcCalcMethod )
{
lut = null;
poly = KeyPoly;
initReg = InitialRegVal;
currCRC = initReg;
finalReg = FinalizeXorVal;
reflected = Reflected;
NumBytesPerRegShift = BytesShiftedPerCycle;
this.CrcType = CrcType;
this.CrcCalcMethod = CrcCalcMethod;
// Build the look up table
BuildTable();
// Call reset to set initial value for currCRC;
ResetCRC();
}