463 lines
21 KiB
C#
463 lines
21 KiB
C#
//
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// Program.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;
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using System.IO;
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namespace SubChannelDecoder
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{
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class MainClass
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{
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const int QQuadraphonic = 0x80;
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const int QData = 0x40;
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const int QCopyPermitted = 0x20;
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const int QPreEmphasis = 0x10;
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const int QMode1 = 0x01;
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const int QMode2 = 0x02;
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const int QMode3 = 0x03;
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const int QMode5 = 0x05;
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static readonly char[] ISRCTable =
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{
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'0', '1', '2', '3', '4',
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'5', '6', '7', '8', '9',
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' ', ' ', ' ', ' ', ' ',
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' ', ' ', 'A', 'B', 'C',
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'D', 'E', 'F', 'G', 'H',
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'I', 'J', 'K', 'L', 'M',
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'N', 'O', 'P', 'Q', 'R',
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'S', 'T', 'U', 'V', 'W',
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'X', 'Y', 'Z'
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};
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static readonly char[] BCDTable =
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{
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'0', '1', '2', '3',
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'4', '5', '6', '7',
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'8', '9', 'A', 'B',
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'C', 'D', 'E', 'F'
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};
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public static void Main(string[] args)
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{
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Console.WriteLine("SubChannelDecoder 0.02");
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Console.WriteLine("© 2015 Natalia Portillo");
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Console.WriteLine();
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if (args.Length != 2 && args.Length != 1)
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{
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Usage();
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return;
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}
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try
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{
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if(!File.Exists(args[0]))
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{
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Console.WriteLine("Specified file does not exist");
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Usage();
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return;
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}
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FileStream fs = new FileStream(args[0], FileMode.Open, FileAccess.Read);
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if(args.Length == 1)
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{
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int sectors = (int)(fs.Length / 96);
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for(int sector = 0; sector < sectors; sector++)
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{
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byte[] sectorBytes = new byte[96];
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fs.Seek(sector*96, SeekOrigin.Begin);
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fs.Read(sectorBytes, 0, 96);
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Subchannel sub = DeinterleaveSubchannel(sectorBytes);
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Console.WriteLine("Sector {0}", sector);
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Console.WriteLine("\tP: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.p[0], sub.p[1], sub.p[2], sub.p[3], sub.p[4], sub.p[5],
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sub.p[6], sub.p[7], sub.p[8], sub.p[9], sub.p[10], sub.p[11]);
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Console.WriteLine("\tQ: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.q[0], sub.q[1], sub.q[2], sub.q[3], sub.q[4], sub.q[5],
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sub.q[6], sub.q[7], sub.q[8], sub.q[9], sub.q[10], sub.q[11]);
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Console.WriteLine("\tR: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.r[0], sub.r[1], sub.r[2], sub.r[3], sub.r[4], sub.r[5],
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sub.r[6], sub.r[7], sub.r[8], sub.r[9], sub.r[10], sub.r[11]);
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Console.WriteLine("\tS: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.s[0], sub.s[1], sub.s[2], sub.s[3], sub.s[4], sub.s[5],
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sub.s[6], sub.s[7], sub.s[8], sub.s[9], sub.s[10], sub.s[11]);
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Console.WriteLine("\tT: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.t[0], sub.t[1], sub.t[2], sub.t[3], sub.t[4], sub.t[5],
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sub.t[6], sub.t[7], sub.t[8], sub.t[9], sub.t[10], sub.t[11]);
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Console.WriteLine("\tU: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.u[0], sub.u[1], sub.u[2], sub.u[3], sub.u[4], sub.u[5],
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sub.u[6], sub.u[7], sub.u[8], sub.u[9], sub.u[10], sub.u[11]);
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Console.WriteLine("\tV: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.v[0], sub.v[1], sub.v[2], sub.v[3], sub.v[4], sub.v[5],
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sub.v[6], sub.v[7], sub.v[8], sub.v[9], sub.v[10], sub.v[11]);
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Console.WriteLine("\tW: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.w[0], sub.w[1], sub.w[2], sub.w[3], sub.w[4], sub.w[5],
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sub.w[6], sub.w[7], sub.w[8], sub.w[9], sub.w[10], sub.w[11]);
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PrintQSubchannel(sub.q);
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}
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}
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else
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{
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int sector;
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if(!int.TryParse(args[1], out sector))
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{
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Console.WriteLine("Specified sector is not a number");
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Usage();
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return;
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}
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if((sector*96) >= fs.Length)
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{
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Console.WriteLine("Specified sector is bigger than specified file");
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Usage();
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return;
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}
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byte[] sectorBytes = new byte[96];
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fs.Seek(sector*96, SeekOrigin.Begin);
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fs.Read(sectorBytes, 0, 96);
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Subchannel sub = DeinterleaveSubchannel(sectorBytes);
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Console.WriteLine("Sector {0}", sector);
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Console.WriteLine("\tP: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.p[0], sub.p[1], sub.p[2], sub.p[3], sub.p[4], sub.p[5],
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sub.p[6], sub.p[7], sub.p[8], sub.p[9], sub.p[10], sub.p[11]);
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Console.WriteLine("\tQ: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.q[0], sub.q[1], sub.q[2], sub.q[3], sub.q[4], sub.q[5],
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sub.q[6], sub.q[7], sub.q[8], sub.q[9], sub.q[10], sub.q[11]);
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Console.WriteLine("\tR: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.r[0], sub.r[1], sub.r[2], sub.r[3], sub.r[4], sub.r[5],
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sub.r[6], sub.r[7], sub.r[8], sub.r[9], sub.r[10], sub.r[11]);
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Console.WriteLine("\tS: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.s[0], sub.s[1], sub.s[2], sub.s[3], sub.s[4], sub.s[5],
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sub.s[6], sub.s[7], sub.s[8], sub.s[9], sub.s[10], sub.s[11]);
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Console.WriteLine("\tT: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.t[0], sub.t[1], sub.t[2], sub.t[3], sub.t[4], sub.t[5],
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sub.t[6], sub.t[7], sub.t[8], sub.t[9], sub.t[10], sub.t[11]);
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Console.WriteLine("\tU: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.u[0], sub.u[1], sub.u[2], sub.u[3], sub.u[4], sub.u[5],
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sub.u[6], sub.u[7], sub.u[8], sub.u[9], sub.u[10], sub.u[11]);
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Console.WriteLine("\tV: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.v[0], sub.v[1], sub.v[2], sub.v[3], sub.v[4], sub.v[5],
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sub.v[6], sub.v[7], sub.v[8], sub.v[9], sub.v[10], sub.v[11]);
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Console.WriteLine("\tW: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}{10:X2}{11:X2}",
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sub.w[0], sub.w[1], sub.w[2], sub.w[3], sub.w[4], sub.w[5],
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sub.w[6], sub.w[7], sub.w[8], sub.w[9], sub.w[10], sub.w[11]);
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PrintQSubchannel(sub.q);
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}
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}
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catch
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{
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Console.WriteLine("Some error happened while reading file");
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throw;
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}
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}
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public static void PrintQSubchannel(byte[] q)
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{
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if ((q[0] & 0x0F) == QData)
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{
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Console.WriteLine("Sector is part of a data track");
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if ((q[0] & QPreEmphasis) == QPreEmphasis)
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Console.WriteLine("Track has been recorded incrementally");
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}
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else
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{
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if ((q[0] & QPreEmphasis) == QPreEmphasis)
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Console.WriteLine("Track has pre-emphasis");
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if ((q[0] & QQuadraphonic) == QQuadraphonic)
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Console.WriteLine("Track contains quadraphonic audio");
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}
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if ((q[0] & QCopyPermitted) == QCopyPermitted)
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Console.WriteLine("Track may be copied");
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if ((q[0] & 0x0F) == QMode1)
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{
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int hour = 0;
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int phour = 0;
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if (q[6] != 0)
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{
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Console.WriteLine("DDCD");
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phour = q[6] & 0x0F;
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hour = (q[6] & 0xF0) >> 4;
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}
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Console.WriteLine("Q Mode 1: Address Marks / TOC");
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if (q[1] == 0x00)
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{
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Console.WriteLine("\tLead-in");
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if (hour != 0)
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Console.WriteLine("\tRelative Address {3:X1}:{0:X2}:{1:X2}:{2:X2}", q[3], q[4], q[5], hour);
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else
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Console.WriteLine("\tRelative Address {0:X2}:{1:X2}:{2:X2}", q[3], q[4], q[5]);
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switch (q[2])
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{
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case 0xA0:
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{
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Console.WriteLine("\tFirst data track is track {0:X2}", q[7]);
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Console.WriteLine("\tDisc type: {0}", q[8]);
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break;
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}
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case 0xA1:
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{
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Console.WriteLine("\tLast data track is track {0:X2}", q[7]);
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break;
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}
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case 0xA2:
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{
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if (phour != 0)
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Console.WriteLine("\tLead-Out starts at Address {3:X1}:{0:X2}:{1:X2}:{2:X2}", q[7], q[8], q[9], phour);
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else
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Console.WriteLine("\tLead-Out starts at Address {0:X2}:{1:X2}:{2:X2}", q[7], q[8], q[9]);
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break;
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}
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case 0xF0:
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{
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Console.WriteLine("Book type: {0}", q[7]);
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Console.WriteLine("Material type: {0}", q[8]);
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Console.WriteLine("Moment of inertia: {0}", q[9]);
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break;
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}
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default:
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{
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Console.WriteLine("\tTrack {0:X}", q[2]);
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if (phour != 0)
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Console.WriteLine("\tTrack Starting Address {3:X1}:{0:X2}:{1:X2}:{2:X2}", q[7], q[8], q[9], phour);
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else
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Console.WriteLine("\tTrack Starting Address {0:X2}:{1:X2}:{2:X2}", q[7], q[8], q[9]);
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break;
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}
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}
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}
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else
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{
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if (q[1] == 0xAA)
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Console.WriteLine("\tLead-out");
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else
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Console.WriteLine("\tTrack {0:X}", q[1]);
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Console.WriteLine("\tIndex {0:X}", q[2]);
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if (hour != 0)
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Console.WriteLine("\tRelative Address {3:X1}:{0:X2}:{1:X2}:{2:X2}", q[3], q[4], q[5], hour);
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else
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Console.WriteLine("\tRelative Address {0:X2}:{1:X2}:{2:X2}", q[3], q[4], q[5]);
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if (phour != 0)
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Console.WriteLine("\tAbsolute Address {3:X1}:{0:X2}:{1:X2}:{2:X2}", q[7], q[8], q[9], phour);
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else
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Console.WriteLine("\tAbsolute Address {0:X2}:{1:X2}:{2:X2}", q[7], q[8], q[9]);
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}
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}
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else if ((q[0] & 0x0F) == QMode2)
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{
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Console.WriteLine("Q Mode 2: Media Catalog Number");
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Console.WriteLine("Catalog number: {0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X1}", q[1], q[2], q[3], q[4], q[5], q[6], (q[7] & 0xF0) >> 4);
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if ((q[7] & 0xF) != 0x00 || q[6] != 0x00)
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Console.WriteLine("Zero = 0x{0:X}{1:X2}", (q[7] & 0xF), q[8]);
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Console.WriteLine("\tAbsolute Frame {0:X2}", q[9]);
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}
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else if ((q[0] & 0x0F) == QMode3)
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{
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Console.WriteLine("Q Mode 3: ISRC");
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char[] isrc = new char[12];
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isrc[0] = ISRCTable[(q[1] & 0xFC) >> 2];
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isrc[1] = ISRCTable[((q[1] & 0x03) << 4) + ((q[2] & 0xF0) >> 4)];
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isrc[2] = ISRCTable[((q[2] & 0x0F) << 2) + ((q[3] & 0xC0) >> 6)];
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isrc[3] = ISRCTable[(q[3] & 0x3F)];
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isrc[4] = ISRCTable[(q[4] & 0xFC) >> 2];
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isrc[5] = BCDTable[(q[5] & 0xF0) >> 4];
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isrc[6] = BCDTable[(q[5] & 0xF)];
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isrc[7] = BCDTable[(q[6] & 0xF0) >> 4];
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isrc[8] = BCDTable[(q[6] & 0xF)];
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isrc[9] = BCDTable[(q[7] & 0xF0) >> 4];
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isrc[10] = BCDTable[(q[7] & 0xF)];
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isrc[11] = BCDTable[(q[8] & 0xF0) >> 4];
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Console.WriteLine("ISRC: {0}", new string(isrc));
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Console.WriteLine("\tAbsolute Frame {0:X2}", q[9]);
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}
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else if ((q[0] & 0x0F) == QMode5)
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{
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Console.WriteLine("Q Mode 5: Recordable information");
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int hour = 0;
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int phour = 0;
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if (q[6] != 0)
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{
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Console.WriteLine("DDCD");
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phour = q[6] & 0x0F;
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hour = (q[6] & 0xF0) >> 4;
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}
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switch (q[2])
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{
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case 0xB0:
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{
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if (hour != 0)
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Console.WriteLine("\tStart of next possible program in the recordable area of the disc {3:X1}:{0:X2}:{1:X2}:{2:X2}", q[3], q[4], q[5], hour);
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else
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Console.WriteLine("\tStart of next possible program in the recordable area of the disc {0:X2}:{1:X2}:{2:X2}", q[3], q[4], q[5]);
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if (phour != 0)
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Console.WriteLine("\tMaximum start of outermost Lead-out in the recordable area of the disc {3:X1}:{0:X2}:{1:X2}:{2:X2}", q[7], q[8], q[9], phour);
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else
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Console.WriteLine("\tMaximum start of outermost Lead-out in the recordable area of the disc {0:X2}:{1:X2}:{2:X2}", q[7], q[8], q[9]);
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break;
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}
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case 0xB1:
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{
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Console.WriteLine("{0:X2} skip interval pointers", q[7]);
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Console.WriteLine("{0:X2} skip track pointers", q[8]);
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break;
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}
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case 0xB2:
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case 0xB3:
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case 0xB4:
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{
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Console.WriteLine("Skip track {0:X2}", q[3]);
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Console.WriteLine("Skip track {0:X2}", q[4]);
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Console.WriteLine("Skip track {0:X2}", q[5]);
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Console.WriteLine("Skip track {0:X2}", q[6]);
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Console.WriteLine("Skip track {0:X2}", q[7]);
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Console.WriteLine("Skip track {0:X2}", q[8]);
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Console.WriteLine("Skip track {0:X2}", q[9]);
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break;
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}
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case 0xC0:
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{
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Console.WriteLine("Optimum recording power: 0x{0:X2}", q[3]);
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if (phour != 0)
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Console.WriteLine("Start time of the first Lead-in area in the disc: {3:X2}:{0:X2}:{1:X2}:{2:X2}", q[7], q[8], q[9], phour);
|
|
else
|
|
Console.WriteLine("Start time of the first Lead-in area in the disc: {0:X2}:{1:X2}:{2:X2}", q[7], q[8], q[9]);
|
|
break;
|
|
}
|
|
case 0xC1:
|
|
{
|
|
Console.WriteLine("Copy of information of A1 from ATIP found");
|
|
Console.WriteLine("Min = {0}", q[3]);
|
|
Console.WriteLine("Sec = {0}", q[4]);
|
|
Console.WriteLine("Frame = {0}", q[5]);
|
|
Console.WriteLine("Zero = {0}", q[6]);
|
|
Console.WriteLine("PMIN = {0}", q[7]);
|
|
Console.WriteLine("PSEC = {0}", q[8]);
|
|
Console.WriteLine("PFRAME = {0}", q[9]);
|
|
break;
|
|
}
|
|
case 0xCF:
|
|
{
|
|
if (phour != 0)
|
|
Console.WriteLine("Start position of outer part lead-in area: {3:X2}:{0:X2}:{1:X2}:{2:X2}", q[7], q[8], q[9], phour);
|
|
else
|
|
Console.WriteLine("Start position of outer part lead-in area: {0:X2}:{1:X2}:{2:X2}", q[7], q[8], q[9]);
|
|
|
|
if (hour != 0)
|
|
Console.WriteLine("Stop position of inner part lead-out area: {3:X2}:{0:X2}:{1:X2}:{2:X2}", q[3], q[4], q[5], hour);
|
|
else
|
|
Console.WriteLine("Stop position of inner part lead-out area: {0:X2}:{1:X2}:{2:X2}", q[3], q[4], q[5]);
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
Console.WriteLine("Start time for interval that should be skipped: {0:X2}:{1:X2}:{2:X2}", q[7], q[8], q[9]);
|
|
Console.WriteLine("Ending time for interval that should be skipped: {0:X2}:{1:X2}:{2:X2}", q[3], q[4], q[5]);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
Console.WriteLine("Unknown Q Mode {0}", (q[0] & 0x0F));
|
|
|
|
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]);
|
|
}
|
|
|
|
|
|
public static Subchannel DeinterleaveSubchannel(byte[] subchannel)
|
|
{
|
|
Subchannel sub = new Subchannel();
|
|
|
|
Array.Copy(subchannel, 0, sub.p, 0, 12);
|
|
Array.Copy(subchannel, 12, sub.q, 0, 12);
|
|
Array.Copy(subchannel, 24, sub.r, 0, 12);
|
|
Array.Copy(subchannel, 36, sub.s, 0, 12);
|
|
Array.Copy(subchannel, 48, sub.t, 0, 12);
|
|
Array.Copy(subchannel, 60, sub.u, 0, 12);
|
|
Array.Copy(subchannel, 72, sub.v, 0, 12);
|
|
Array.Copy(subchannel, 84, sub.w, 0, 12);
|
|
|
|
return sub;
|
|
}
|
|
|
|
public static void Usage()
|
|
{
|
|
Console.WriteLine();
|
|
Console.WriteLine("SubChannelDecoder <subchannel.sub> [sector]");
|
|
Console.WriteLine();
|
|
Console.WriteLine("\t\tsubchannel.sub: Subchannel file");
|
|
Console.WriteLine("\t\tsector: Counting sector 0 as start of file, subchannel sector to decode");
|
|
}
|
|
}
|
|
}
|