Added CRC16 calculation.
Corrected a bug in Q mode detection. Corrected ISRC character table.
This commit is contained in:
644
BigEndianBitConverter.cs
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644
BigEndianBitConverter.cs
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//
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// BigEndianBitConverter.cs
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//
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// Author:
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// Natalia Portillo <claunia@claunia.com>
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//
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// Copyright (c) 2015 © Claunia.com
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//
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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 published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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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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//
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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, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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using System.Linq;
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using System;
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namespace SubChannelDecoder
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{
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/// <summary>
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/// Converts base data types to an array of bytes, and an array of bytes to base
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/// data types.
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/// All info taken from the meta data of System.BitConverter. This implementation
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/// allows for Endianness consideration.
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///</summary>
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public static class BigEndianBitConverter
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{
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/// <summary>
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/// Indicates the byte order ("endianess") in which data is stored in this computer
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/// architecture.
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///</summary>
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public static bool IsLittleEndian { get; set; }
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// should default to false, which is what we want for Empire
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/// <summary>
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||||
/// Converts the specified double-precision floating point number to a 64-bit
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/// signed integer.
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///
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||||
/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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/// A 64-bit signed integer whose value is equivalent to value.
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///</summary>
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public static long DoubleToInt64Bits(double value)
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{
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throw new NotImplementedException();
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}
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///
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||||
/// <summary>
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||||
/// Returns the specified Boolean value as an array of bytes.
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||||
///
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||||
/// Parameters:
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/// value:
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/// A Boolean value.
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///
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/// Returns:
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/// An array of bytes with length 1.
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///</summary>
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public static byte[] GetBytes(bool value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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/// Returns the specified Unicode character value as an array of bytes.
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///
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/// Parameters:
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/// value:
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/// A character to convert.
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///
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/// Returns:
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/// An array of bytes with length 2.
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///</summary>
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public static byte[] GetBytes(char value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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||||
/// Returns the specified double-precision floating point value as an array of
|
||||
/// bytes.
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||||
///
|
||||
/// Parameters:
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||||
/// value:
|
||||
/// The number to convert.
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///
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/// Returns:
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/// An array of bytes with length 8.
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///</summary>
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public static byte[] GetBytes(double value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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||||
/// Returns the specified single-precision floating point value as an array of
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/// bytes.
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///
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||||
/// Parameters:
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||||
/// value:
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/// The number to convert.
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///
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/// Returns:
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/// An array of bytes with length 4.
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///</summary>
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public static byte[] GetBytes(float value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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||||
/// Returns the specified 32-bit signed integer value as an array of bytes.
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||||
///
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/// Parameters:
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/// value:
|
||||
/// The number to convert.
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///
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/// Returns:
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||||
/// An array of bytes with length 4.
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///</summary>
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public static byte[] GetBytes(int value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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||||
///
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/// <summary>
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/// Returns the specified 64-bit signed integer value as an array of bytes.
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///
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/// Parameters:
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||||
/// value:
|
||||
/// The number to convert.
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///
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||||
/// Returns:
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||||
/// An array of bytes with length 8.
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///</summary>
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public static byte[] GetBytes(long value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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/// Returns the specified 16-bit signed integer value as an array of bytes.
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///
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/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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||||
/// An array of bytes with length 2.
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///</summary>
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||||
public static byte[] GetBytes(short value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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||||
///
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/// <summary>
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||||
/// Returns the specified 32-bit unsigned integer value as an array of bytes.
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||||
///
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||||
/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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/// An array of bytes with length 4.
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///</summary>
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//[CLSCompliant(false)]
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public static byte[] GetBytes(uint value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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/// Returns the specified 64-bit unsigned integer value as an array of bytes.
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///
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/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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/// An array of bytes with length 8.
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///</summary>
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//[CLSCompliant(false)]
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public static byte[] GetBytes(ulong value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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||||
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///
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/// <summary>
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/// Returns the specified 16-bit unsigned integer value as an array of bytes.
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||||
///
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||||
/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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/// An array of bytes with length 2.
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||||
///</summary>
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||||
public static byte[] GetBytes(ushort value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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||||
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///
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||||
/// <summary>
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||||
/// Converts the specified 64-bit signed integer to a double-precision floating
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/// point number.
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///
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||||
/// Parameters:
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||||
/// value:
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||||
/// The number to convert.
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///
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/// Returns:
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/// A double-precision floating point number whose value is equivalent to value.
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///</summary>
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public static double Int64BitsToDouble(long value)
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{
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throw new NotImplementedException();
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}
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||||
|
||||
///
|
||||
/// <summary>
|
||||
/// Returns a Boolean value converted from one byte at a specified position in
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/// a byte array.
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||||
///
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||||
/// Parameters:
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||||
/// value:
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||||
/// An array of bytes.
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||||
///
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||||
/// startIndex:
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/// The starting position within value.
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||||
///
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/// Returns:
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/// true if the byte at startIndex in value is nonzero; otherwise, false.
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///
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||||
/// Exceptions:
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/// System.ArgumentNullException:
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/// value is null.
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///
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||||
/// System.ArgumentOutOfRangeException:
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/// startIndex is less than zero or greater than the length of value minus 1.
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///</summary>
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public static bool ToBoolean(byte[] value, int startIndex)
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{
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throw new NotImplementedException();
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}
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///
|
||||
/// <summary>
|
||||
/// Returns a Unicode character converted from two bytes at a specified position
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/// in a byte array.
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||||
///
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||||
/// Parameters:
|
||||
/// value:
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/// An array.
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///
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/// startIndex:
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/// The starting position within value.
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||||
///
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||||
/// Returns:
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||||
/// A character formed by two bytes beginning at startIndex.
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///
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/// Exceptions:
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||||
/// System.ArgumentException:
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/// startIndex equals the length of value minus 1.
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||||
///
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||||
/// System.ArgumentNullException:
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||||
/// value is null.
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||||
///
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||||
/// System.ArgumentOutOfRangeException:
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||||
/// startIndex is less than zero or greater than the length of value minus 1.
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||||
///</summary>
|
||||
public static char ToChar(byte[] value, int startIndex)
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{
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||||
throw new NotImplementedException();
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}
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|
||||
///
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||||
/// <summary>
|
||||
/// Returns a double-precision floating point number converted from eight bytes
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/// at a specified position in a byte array.
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||||
///
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||||
/// Parameters:
|
||||
/// value:
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||||
/// An array of bytes.
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///
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||||
/// startIndex:
|
||||
/// The starting position within value.
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||||
///
|
||||
/// Returns:
|
||||
/// A double precision floating point number formed by eight bytes beginning
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/// at startIndex.
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||||
///
|
||||
/// Exceptions:
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||||
/// System.ArgumentException:
|
||||
/// startIndex is greater than or equal to the length of value minus 7, and is
|
||||
/// less than or equal to the length of value minus 1.
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||||
///
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||||
/// System.ArgumentNullException:
|
||||
/// value is null.
|
||||
///
|
||||
/// System.ArgumentOutOfRangeException:
|
||||
/// startIndex is less than zero or greater than the length of value minus 1.
|
||||
///</summary>
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||||
public static double ToDouble(byte[] value, int startIndex)
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||||
{
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||||
throw new NotImplementedException();
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||||
}
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||||
|
||||
///
|
||||
/// <summary>
|
||||
/// Returns a 16-bit signed integer converted from two bytes at a specified position
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||||
/// in a byte array.
|
||||
///
|
||||
/// Parameters:
|
||||
/// value:
|
||||
/// An array of bytes.
|
||||
///
|
||||
/// startIndex:
|
||||
/// The starting position within value.
|
||||
///
|
||||
/// Returns:
|
||||
/// A 16-bit signed integer formed by two bytes beginning at startIndex.
|
||||
///
|
||||
/// Exceptions:
|
||||
/// System.ArgumentException:
|
||||
/// startIndex equals the length of value minus 1.
|
||||
///
|
||||
/// System.ArgumentNullException:
|
||||
/// value is null.
|
||||
///
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||||
/// System.ArgumentOutOfRangeException:
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||||
/// startIndex is less than zero or greater than the length of value minus 1.
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||||
///</summary>
|
||||
public static short ToInt16(byte[] value, int startIndex)
|
||||
{
|
||||
return !IsLittleEndian ? BitConverter.ToInt16(value, startIndex) : BitConverter.ToInt16(value.Reverse().ToArray(), value.Length - sizeof(Int16) - startIndex);
|
||||
}
|
||||
|
||||
///
|
||||
/// <summary>
|
||||
/// Returns a 32-bit signed integer converted from four bytes at a specified
|
||||
/// position in a byte array.
|
||||
///
|
||||
/// Parameters:
|
||||
/// value:
|
||||
/// An array of bytes.
|
||||
///
|
||||
/// startIndex:
|
||||
/// The starting position within value.
|
||||
///
|
||||
/// Returns:
|
||||
/// A 32-bit signed integer formed by four bytes beginning at startIndex.
|
||||
///
|
||||
/// Exceptions:
|
||||
/// System.ArgumentException:
|
||||
/// startIndex is greater than or equal to the length of value minus 3, and is
|
||||
/// less than or equal to the length of value minus 1.
|
||||
///
|
||||
/// System.ArgumentNullException:
|
||||
/// value is null.
|
||||
///
|
||||
/// System.ArgumentOutOfRangeException:
|
||||
/// startIndex is less than zero or greater than the length of value minus 1.
|
||||
///</summary>
|
||||
public static int ToInt32(byte[] value, int startIndex)
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||||
{
|
||||
return !IsLittleEndian ? BitConverter.ToInt32(value, startIndex) : BitConverter.ToInt32(value.Reverse().ToArray(), value.Length - sizeof(Int32) - startIndex);
|
||||
}
|
||||
|
||||
///
|
||||
/// <summary>
|
||||
/// Returns a 64-bit signed integer converted from eight bytes at a specified
|
||||
/// position in a byte array.
|
||||
///
|
||||
/// Parameters:
|
||||
/// value:
|
||||
/// An array of bytes.
|
||||
///
|
||||
/// startIndex:
|
||||
/// The starting position within value.
|
||||
///
|
||||
/// Returns:
|
||||
/// A 64-bit signed integer formed by eight bytes beginning at startIndex.
|
||||
///
|
||||
/// Exceptions:
|
||||
/// System.ArgumentException:
|
||||
/// startIndex is greater than or equal to the length of value minus 7, and is
|
||||
/// less than or equal to the length of value minus 1.
|
||||
///
|
||||
/// System.ArgumentNullException:
|
||||
/// value is null.
|
||||
///
|
||||
/// System.ArgumentOutOfRangeException:
|
||||
/// startIndex is less than zero or greater than the length of value minus 1.
|
||||
///</summary>
|
||||
public static long ToInt64(byte[] value, int startIndex)
|
||||
{
|
||||
return !IsLittleEndian ? BitConverter.ToInt64(value, startIndex) : BitConverter.ToInt64(value.Reverse().ToArray(), value.Length - sizeof(Int64) - startIndex);
|
||||
}
|
||||
|
||||
///
|
||||
/// <summary>
|
||||
/// Returns a single-precision floating point number converted from four bytes
|
||||
/// at a specified position in a byte array.
|
||||
///
|
||||
/// Parameters:
|
||||
/// value:
|
||||
/// An array of bytes.
|
||||
///
|
||||
/// startIndex:
|
||||
/// The starting position within value.
|
||||
///
|
||||
/// Returns:
|
||||
/// A single-precision floating point number formed by four bytes beginning at
|
||||
/// startIndex.
|
||||
///
|
||||
/// Exceptions:
|
||||
/// System.ArgumentException:
|
||||
/// startIndex is greater than or equal to the length of value minus 3, and is
|
||||
/// less than or equal to the length of value minus 1.
|
||||
///
|
||||
/// System.ArgumentNullException:
|
||||
/// value is null.
|
||||
///
|
||||
/// System.ArgumentOutOfRangeException:
|
||||
/// startIndex is less than zero or greater than the length of value minus 1.
|
||||
///</summary>
|
||||
public static float ToSingle(byte[] value, int startIndex)
|
||||
{
|
||||
return !IsLittleEndian ? BitConverter.ToSingle(value, startIndex) : BitConverter.ToSingle(value.Reverse().ToArray(), value.Length - sizeof(Single) - startIndex);
|
||||
}
|
||||
|
||||
///
|
||||
/// <summary>
|
||||
/// Converts the numeric value of each element of a specified array of bytes
|
||||
/// to its equivalent hexadecimal string representation.
|
||||
///
|
||||
/// Parameters:
|
||||
/// value:
|
||||
/// An array of bytes.
|
||||
///
|
||||
/// Returns:
|
||||
/// A System.String of hexadecimal pairs separated by hyphens, where each pair
|
||||
/// represents the corresponding element in value; for example, "7F-2C-4A".
|
||||
///
|
||||
/// Exceptions:
|
||||
/// System.ArgumentNullException:
|
||||
/// value is null.
|
||||
///</summary>
|
||||
public static string ToString(byte[] value)
|
||||
{
|
||||
return !IsLittleEndian ? BitConverter.ToString(value) : BitConverter.ToString(value.Reverse().ToArray());
|
||||
}
|
||||
|
||||
///
|
||||
/// <summary>
|
||||
/// Converts the numeric value of each element of a specified subarray of bytes
|
||||
/// to its equivalent hexadecimal string representation.
|
||||
///
|
||||
/// Parameters:
|
||||
/// value:
|
||||
/// An array of bytes.
|
||||
///
|
||||
/// startIndex:
|
||||
/// The starting position within value.
|
||||
///
|
||||
/// Returns:
|
||||
/// A System.String of hexadecimal pairs separated by hyphens, where each pair
|
||||
/// represents the corresponding element in a subarray of value; for example,
|
||||
/// "7F-2C-4A".
|
||||
///
|
||||
/// Exceptions:
|
||||
/// System.ArgumentNullException:
|
||||
/// value is null.
|
||||
///
|
||||
/// System.ArgumentOutOfRangeException:
|
||||
/// startIndex is less than zero or greater than the length of value minus 1.
|
||||
///</summary>
|
||||
public static string ToString(byte[] value, int startIndex)
|
||||
{
|
||||
return !IsLittleEndian ? BitConverter.ToString(value, startIndex) : BitConverter.ToString(value.Reverse().ToArray(), startIndex);
|
||||
}
|
||||
|
||||
///
|
||||
/// <summary>
|
||||
/// Converts the numeric value of each element of a specified subarray of bytes
|
||||
/// to its equivalent hexadecimal string representation.
|
||||
///
|
||||
/// Parameters:
|
||||
/// value:
|
||||
/// An array of bytes.
|
||||
///
|
||||
/// startIndex:
|
||||
/// The starting position within value.
|
||||
///
|
||||
/// length:
|
||||
/// The number of array elements in value to convert.
|
||||
///
|
||||
/// Returns:
|
||||
/// A System.String of hexadecimal pairs separated by hyphens, where each pair
|
||||
/// represents the corresponding element in a subarray of value; for example,
|
||||
/// "7F-2C-4A".
|
||||
///
|
||||
/// Exceptions:
|
||||
/// System.ArgumentNullException:
|
||||
/// value is null.
|
||||
///
|
||||
/// System.ArgumentOutOfRangeException:
|
||||
/// startIndex or length is less than zero. -or- startIndex is greater than
|
||||
/// zero and is greater than or equal to the length of value.
|
||||
///
|
||||
/// System.ArgumentException:
|
||||
/// The combination of startIndex and length does not specify a position within
|
||||
/// value; that is, the startIndex parameter is greater than the length of value
|
||||
/// minus the length parameter.
|
||||
///</summary>
|
||||
public static string ToString(byte[] value, int startIndex, int length)
|
||||
{
|
||||
return !IsLittleEndian ? BitConverter.ToString(value, startIndex, length) : BitConverter.ToString(value.Reverse().ToArray(), startIndex, length);
|
||||
}
|
||||
|
||||
///
|
||||
/// <summary>
|
||||
/// Returns a 16-bit unsigned integer converted from two bytes at a specified
|
||||
/// position in a byte array.
|
||||
///
|
||||
/// Parameters:
|
||||
/// value:
|
||||
/// The array of bytes.
|
||||
///
|
||||
/// startIndex:
|
||||
/// The starting position within value.
|
||||
///
|
||||
/// Returns:
|
||||
/// A 16-bit unsigned integer formed by two bytes beginning at startIndex.
|
||||
///
|
||||
/// Exceptions:
|
||||
/// System.ArgumentException:
|
||||
/// startIndex equals the length of value minus 1.
|
||||
///
|
||||
/// System.ArgumentNullException:
|
||||
/// value is null.
|
||||
///
|
||||
/// System.ArgumentOutOfRangeException:
|
||||
/// startIndex is less than zero or greater than the length of value minus 1.
|
||||
///</summary>
|
||||
public static ushort ToUInt16(byte[] value, int startIndex)
|
||||
{
|
||||
return !IsLittleEndian ? BitConverter.ToUInt16(value, startIndex) : BitConverter.ToUInt16(value.Reverse().ToArray(), value.Length - sizeof(UInt16) - startIndex);
|
||||
}
|
||||
|
||||
///
|
||||
/// <summary>
|
||||
/// Returns a 32-bit unsigned integer converted from four bytes at a specified
|
||||
/// position in a byte array.
|
||||
///
|
||||
/// Parameters:
|
||||
/// value:
|
||||
/// An array of bytes.
|
||||
///
|
||||
/// startIndex:
|
||||
/// The starting position within value.
|
||||
///
|
||||
/// Returns:
|
||||
/// A 32-bit unsigned integer formed by four bytes beginning at startIndex.
|
||||
///
|
||||
/// Exceptions:
|
||||
/// System.ArgumentException:
|
||||
/// startIndex is greater than or equal to the length of value minus 3, and is
|
||||
/// less than or equal to the length of value minus 1.
|
||||
///
|
||||
/// System.ArgumentNullException:
|
||||
/// value is null.
|
||||
///
|
||||
/// System.ArgumentOutOfRangeException:
|
||||
/// startIndex is less than zero or greater than the length of value minus 1.
|
||||
///</summary>
|
||||
public static uint ToUInt32(byte[] value, int startIndex)
|
||||
{
|
||||
return !IsLittleEndian ? BitConverter.ToUInt32(value, startIndex) : BitConverter.ToUInt32(value.Reverse().ToArray(), value.Length - sizeof(UInt32) - startIndex);
|
||||
}
|
||||
|
||||
///
|
||||
/// <summary>
|
||||
/// Returns a 64-bit unsigned integer converted from eight bytes at a specified
|
||||
/// position in a byte array.
|
||||
///
|
||||
/// Parameters:
|
||||
/// value:
|
||||
/// An array of bytes.
|
||||
///
|
||||
/// startIndex:
|
||||
/// The starting position within value.
|
||||
///
|
||||
/// Returns:
|
||||
/// A 64-bit unsigned integer formed by the eight bytes beginning at startIndex.
|
||||
///
|
||||
/// Exceptions:
|
||||
/// System.ArgumentException:
|
||||
/// startIndex is greater than or equal to the length of value minus 7, and is
|
||||
/// less than or equal to the length of value minus 1.
|
||||
///
|
||||
/// System.ArgumentNullException:
|
||||
/// value is null.
|
||||
///
|
||||
/// System.ArgumentOutOfRangeException:
|
||||
/// startIndex is less than zero or greater than the length of value minus 1.
|
||||
///</summary>
|
||||
public static ulong ToUInt64(byte[] value, int startIndex)
|
||||
{
|
||||
return !IsLittleEndian ? BitConverter.ToUInt64(value, startIndex) : BitConverter.ToUInt64(value.Reverse().ToArray(), value.Length - sizeof(UInt64) - startIndex);
|
||||
}
|
||||
|
||||
public static Guid ToGuid(byte[] value, int startIndex)
|
||||
{
|
||||
return new Guid(BigEndianBitConverter.ToUInt32(value, 0 + startIndex),
|
||||
BigEndianBitConverter.ToUInt16(value, 4 + startIndex),
|
||||
BigEndianBitConverter.ToUInt16(value, 6 + startIndex),
|
||||
value[8 + startIndex + 0], value[8 + startIndex + 1],
|
||||
value[8 + startIndex + 2], value[8 + startIndex + 3],
|
||||
value[8 + startIndex + 5], value[8 + startIndex + 5],
|
||||
value[8 + startIndex + 6], value[8 + startIndex + 7]);
|
||||
}
|
||||
}}
|
||||
|
||||
219
CRC16CCITTContext.cs
Normal file
219
CRC16CCITTContext.cs
Normal file
@@ -0,0 +1,219 @@
|
||||
//
|
||||
// CRC16CCITTContext.cs
|
||||
//
|
||||
// Author:
|
||||
// Natalia Portillo <claunia@claunia.com>
|
||||
//
|
||||
// Copyright (c) 2015 © Claunia.com
|
||||
//
|
||||
// This program 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.
|
||||
//
|
||||
// This program 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 this program; if not, write to the Free Software
|
||||
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
//
|
||||
using System;
|
||||
using System.Text;
|
||||
using System.IO;
|
||||
|
||||
namespace SubChannelDecoder
|
||||
{
|
||||
/// <summary>
|
||||
/// Provides a UNIX similar API to calculate CRC16CCITT (x^16 + x^12 + x^5 + 1).
|
||||
/// </summary>
|
||||
public class CRC16CCITTContext
|
||||
{
|
||||
static UInt16[] table =
|
||||
{
|
||||
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5,
|
||||
0x60c6, 0x70e7, 0x8108, 0x9129, 0xa14a, 0xb16b,
|
||||
0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, 0x1231, 0x0210,
|
||||
0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
|
||||
0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c,
|
||||
0xf3ff, 0xe3de, 0x2462, 0x3443, 0x0420, 0x1401,
|
||||
0x64e6, 0x74c7, 0x44a4, 0x5485, 0xa56a, 0xb54b,
|
||||
0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
|
||||
0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6,
|
||||
0x5695, 0x46b4, 0xb75b, 0xa77a, 0x9719, 0x8738,
|
||||
0xf7df, 0xe7fe, 0xd79d, 0xc7bc, 0x48c4, 0x58e5,
|
||||
0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
|
||||
0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969,
|
||||
0xa90a, 0xb92b, 0x5af5, 0x4ad4, 0x7ab7, 0x6a96,
|
||||
0x1a71, 0x0a50, 0x3a33, 0x2a12, 0xdbfd, 0xcbdc,
|
||||
0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
|
||||
0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03,
|
||||
0x0c60, 0x1c41, 0xedae, 0xfd8f, 0xcdec, 0xddcd,
|
||||
0xad2a, 0xbd0b, 0x8d68, 0x9d49, 0x7e97, 0x6eb6,
|
||||
0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
|
||||
0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a,
|
||||
0x9f59, 0x8f78, 0x9188, 0x81a9, 0xb1ca, 0xa1eb,
|
||||
0xd10c, 0xc12d, 0xf14e, 0xe16f, 0x1080, 0x00a1,
|
||||
0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
|
||||
0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c,
|
||||
0xe37f, 0xf35e, 0x02b1, 0x1290, 0x22f3, 0x32d2,
|
||||
0x4235, 0x5214, 0x6277, 0x7256, 0xb5ea, 0xa5cb,
|
||||
0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
|
||||
0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447,
|
||||
0x5424, 0x4405, 0xa7db, 0xb7fa, 0x8799, 0x97b8,
|
||||
0xe75f, 0xf77e, 0xc71d, 0xd73c, 0x26d3, 0x36f2,
|
||||
0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
|
||||
0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9,
|
||||
0xb98a, 0xa9ab, 0x5844, 0x4865, 0x7806, 0x6827,
|
||||
0x18c0, 0x08e1, 0x3882, 0x28a3, 0xcb7d, 0xdb5c,
|
||||
0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
|
||||
0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0,
|
||||
0x2ab3, 0x3a92, 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d,
|
||||
0xbdaa, 0xad8b, 0x9de8, 0x8dc9, 0x7c26, 0x6c07,
|
||||
0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
|
||||
0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba,
|
||||
0x8fd9, 0x9ff8, 0x6e17, 0x7e36, 0x4e55, 0x5e74,
|
||||
0x2e93, 0x3eb2, 0x0ed1, 0x1ef0
|
||||
};
|
||||
UInt16 hashInt;
|
||||
|
||||
/// <summary>
|
||||
/// Initializes the CRC16CCITT table and seed
|
||||
/// </summary>
|
||||
public void Init()
|
||||
{
|
||||
hashInt = 0xFFFF;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Updates the hash with data.
|
||||
/// </summary>
|
||||
/// <param name="data">Data buffer.</param>
|
||||
/// <param name="len">Length of buffer to hash.</param>
|
||||
public void Update(byte[] data, uint len)
|
||||
{
|
||||
for (int i = 0; i < len; i++)
|
||||
hashInt = (ushort)((hashInt << 8) ^ table[data[i] ^ (hashInt>>8 & 0xFF)]);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Updates the hash with data.
|
||||
/// </summary>
|
||||
/// <param name="data">Data buffer.</param>
|
||||
public void Update(byte[] data)
|
||||
{
|
||||
Update(data, (uint)data.Length);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Returns a byte array of the hash value.
|
||||
/// </summary>
|
||||
public byte[] Final()
|
||||
{
|
||||
hashInt = (ushort)~hashInt;
|
||||
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
|
||||
return BigEndianBitConverter.GetBytes(hashInt);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Returns a hexadecimal representation of the hash value.
|
||||
/// </summary>
|
||||
public string End()
|
||||
{
|
||||
hashInt = (ushort)~hashInt;
|
||||
|
||||
StringBuilder crc16Output = new StringBuilder();
|
||||
|
||||
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
|
||||
for (int i = 0; i < BigEndianBitConverter.GetBytes(hashInt).Length; i++)
|
||||
{
|
||||
crc16Output.Append(BigEndianBitConverter.GetBytes(hashInt)[i].ToString("x2"));
|
||||
}
|
||||
|
||||
return crc16Output.ToString();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets the hash of a file
|
||||
/// </summary>
|
||||
/// <param name="filename">File path.</param>
|
||||
public static byte[] File(string filename)
|
||||
{
|
||||
byte[] hash;
|
||||
File(filename, out hash);
|
||||
return hash;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets the hash of a file in hexadecimal and as a byte array.
|
||||
/// </summary>
|
||||
/// <param name="filename">File path.</param>
|
||||
/// <param name="hash">Byte array of the hash value.</param>
|
||||
public static string File(string filename, out byte[] hash)
|
||||
{
|
||||
FileStream fileStream = new FileStream(filename, FileMode.Open);
|
||||
UInt16 localhashInt;
|
||||
|
||||
localhashInt = 0x0000;
|
||||
|
||||
for (int i = 0; i < fileStream.Length; i++)
|
||||
localhashInt = (ushort)((localhashInt << 8) ^ table[fileStream.ReadByte() ^ (localhashInt>>8 & 0xFF)]);
|
||||
|
||||
localhashInt = (ushort)~localhashInt;
|
||||
|
||||
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
|
||||
hash = BigEndianBitConverter.GetBytes(localhashInt);
|
||||
|
||||
StringBuilder crc16Output = new StringBuilder();
|
||||
|
||||
for (int i = 0; i < hash.Length; i++)
|
||||
{
|
||||
crc16Output.Append(hash[i].ToString("x2"));
|
||||
}
|
||||
|
||||
return crc16Output.ToString();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets the hash of the specified data buffer.
|
||||
/// </summary>
|
||||
/// <param name="data">Data buffer.</param>
|
||||
/// <param name="len">Length of the data buffer to hash.</param>
|
||||
/// <param name="hash">Byte array of the hash value.</param>
|
||||
public static string Data(byte[] data, uint len, out byte[] hash)
|
||||
{
|
||||
UInt16 localhashInt;
|
||||
|
||||
localhashInt = 0x0000;
|
||||
|
||||
for (int i = 0; i < len; i++)
|
||||
localhashInt = (ushort)((localhashInt << 8) ^ table[data[i] ^ (localhashInt>>8 & 0xFF)]);
|
||||
|
||||
localhashInt = (ushort)~localhashInt;
|
||||
|
||||
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
|
||||
hash = BigEndianBitConverter.GetBytes(localhashInt);
|
||||
|
||||
StringBuilder crc16Output = new StringBuilder();
|
||||
|
||||
for (int i = 0; i < hash.Length; i++)
|
||||
{
|
||||
crc16Output.Append(hash[i].ToString("x2"));
|
||||
}
|
||||
|
||||
return crc16Output.ToString();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets the hash of the specified data buffer.
|
||||
/// </summary>
|
||||
/// <param name="data">Data buffer.</param>
|
||||
/// <param name="hash">Byte array of the hash value.</param>
|
||||
public static string Data(byte[] data, out byte[] hash)
|
||||
{
|
||||
return Data(data, (uint)data.Length, out hash);
|
||||
}
|
||||
}}
|
||||
|
||||
10
ChangeLog
10
ChangeLog
@@ -1,3 +1,13 @@
|
||||
2015-09-22 Natalia Portillo <claunia@claunia.com>
|
||||
|
||||
* Program.cs:
|
||||
* CRC16CCITTContext.cs:
|
||||
* BigEndianBitConverter.cs:
|
||||
* SubChannelDecoder.csproj:
|
||||
Added CRC16 calculation.
|
||||
Corrected a bug in Q mode detection.
|
||||
Corrected ISRC character table.
|
||||
|
||||
2015-09-22 Natalia Portillo <claunia@claunia.com>
|
||||
|
||||
* Program.cs:
|
||||
|
||||
28
Program.cs
28
Program.cs
@@ -39,12 +39,15 @@ namespace SubChannelDecoder
|
||||
|
||||
static readonly char[] ISRCTable =
|
||||
{
|
||||
'0', '1', '2', '3', '4', '5',
|
||||
'6', '7', '8', '9', 'A', 'B',
|
||||
'C', 'D', 'E', 'F', 'G', 'H',
|
||||
'I', 'J', 'K', 'L', 'M', 'N',
|
||||
'O', 'P', 'Q', 'R', 'S', 'T',
|
||||
'U', 'V', 'W', 'X', 'Y', 'Z'
|
||||
'0', '1', '2', '3', '4',
|
||||
'5', '6', '7', '8', '9',
|
||||
' ', ' ', ' ', ' ', ' ',
|
||||
' ', ' ', 'A', 'B', 'C',
|
||||
'D', 'E', 'F', 'G', 'H',
|
||||
'I', 'J', 'K', 'L', 'M',
|
||||
'N', 'O', 'P', 'Q', 'R',
|
||||
'S', 'T', 'U', 'V', 'W',
|
||||
'X', 'Y', 'Z'
|
||||
};
|
||||
|
||||
static readonly char[] BCDTable =
|
||||
@@ -57,7 +60,7 @@ namespace SubChannelDecoder
|
||||
|
||||
public static void Main(string[] args)
|
||||
{
|
||||
Console.WriteLine("SubChannelDecoder 0.01");
|
||||
Console.WriteLine("SubChannelDecoder 0.02");
|
||||
Console.WriteLine("© 2015 Natalia Portillo");
|
||||
Console.WriteLine();
|
||||
|
||||
@@ -213,7 +216,7 @@ namespace SubChannelDecoder
|
||||
if ((q[0] & QCopyPermitted) == QCopyPermitted)
|
||||
Console.WriteLine("Track may be copied");
|
||||
|
||||
if ((q[0] & QMode1) == QMode1)
|
||||
if ((q[0] & 0x0F) == QMode1)
|
||||
{
|
||||
int hour = 0;
|
||||
int phour = 0;
|
||||
@@ -421,8 +424,13 @@ namespace SubChannelDecoder
|
||||
else
|
||||
Console.WriteLine("Unknown Q Mode {0}", (q[0] & 0x0F));
|
||||
|
||||
UInt16 Qcrc = (ushort)((q[10] << 8) + q[11]);
|
||||
Console.WriteLine("Q CRC = 0x{0:X4}", Qcrc);
|
||||
byte[] QCalculatedCrc;
|
||||
CRC16CCITTContext.Data(q, 10, out QCalculatedCrc);
|
||||
|
||||
if(q[10] != QCalculatedCrc[0] || q[11] != QCalculatedCrc[1])
|
||||
Console.WriteLine("Q CRC = 0x{0:X2}{1:X2} (BAD: Expected 0x{2:X2}{3:X2})", q[10], q[11], QCalculatedCrc[0], QCalculatedCrc[1]);
|
||||
else
|
||||
Console.WriteLine("Q CRC = 0x{0:X2}{1:X2} (OK)", q[10], q[11]);
|
||||
}
|
||||
|
||||
|
||||
|
||||
@@ -36,6 +36,8 @@
|
||||
<Compile Include="Program.cs" />
|
||||
<Compile Include="Properties\AssemblyInfo.cs" />
|
||||
<Compile Include="Subchannel.cs" />
|
||||
<Compile Include="CRC16CCITTContext.cs" />
|
||||
<Compile Include="BigEndianBitConverter.cs" />
|
||||
</ItemGroup>
|
||||
<Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
|
||||
</Project>
|
||||
Reference in New Issue
Block a user