// /*************************************************************************** // Aaru Data Preservation Suite // ---------------------------------------------------------------------------- // // Filename : Subchannel.cs // Author(s) : Natalia Portillo // // Component : Device structures decoders. // // --[ License ] -------------------------------------------------------------- // // 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 3 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, see . // // ---------------------------------------------------------------------------- // Copyright © 2011-2020 Natalia Portillo // ****************************************************************************/ using System; using Aaru.Checksums; namespace Aaru.Decoders.CD { public static class Subchannel { static readonly string[] _isrcTable = { // 0x00 "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "", "", "", "", "", "", // 0x10 "", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", // 0x20 "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "", "", "", "", "", // 0x30 "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "" }; public static void BinaryToBcdQ(byte[] q) { if((q[0] & 0xF) == 1 || (q[0] & 0xF) == 5) { q[1] = (byte)(((q[1] / 10) << 4) + (q[1] % 10)); q[2] = (byte)(((q[2] / 10) << 4) + (q[2] % 10)); q[3] = (byte)(((q[3] / 10) << 4) + (q[3] % 10)); q[4] = (byte)(((q[4] / 10) << 4) + (q[4] % 10)); q[5] = (byte)(((q[5] / 10) << 4) + (q[5] % 10)); q[6] = (byte)(((q[6] / 10) << 4) + (q[6] % 10)); q[7] = (byte)(((q[7] / 10) << 4) + (q[7] % 10)); q[8] = (byte)(((q[8] / 10) << 4) + (q[8] % 10)); } q[9] = (byte)(((q[9] / 10) << 4) + (q[9] % 10)); } public static void BcdToBinaryQ(byte[] q) { if((q[0] & 0xF) == 1 || (q[0] & 0xF) == 5) { q[1] = (byte)(((q[1] / 16) * 10) + (q[1] & 0x0F)); q[2] = (byte)(((q[2] / 16) * 10) + (q[2] & 0x0F)); q[3] = (byte)(((q[3] / 16) * 10) + (q[3] & 0x0F)); q[4] = (byte)(((q[4] / 16) * 10) + (q[4] & 0x0F)); q[5] = (byte)(((q[5] / 16) * 10) + (q[5] & 0x0F)); q[6] = (byte)(((q[6] / 16) * 10) + (q[6] & 0x0F)); q[7] = (byte)(((q[7] / 16) * 10) + (q[7] & 0x0F)); q[8] = (byte)(((q[8] / 16) * 10) + (q[8] & 0x0F)); } q[9] = (byte)(((q[9] / 16) * 10) + (q[9] & 0x0F)); } public static byte[] ConvertQToRaw(byte[] subchannel) { int pos = 0; byte[] subBuf = new byte[subchannel.Length * 6]; for(int i = 0; i < subchannel.Length; i += 16) { // P if((subchannel[i + 15] & 0x80) <= 0) { pos += 12; } else { subBuf[pos++] = 0xFF; subBuf[pos++] = 0xFF; subBuf[pos++] = 0xFF; subBuf[pos++] = 0xFF; subBuf[pos++] = 0xFF; subBuf[pos++] = 0xFF; subBuf[pos++] = 0xFF; subBuf[pos++] = 0xFF; subBuf[pos++] = 0xFF; subBuf[pos++] = 0xFF; subBuf[pos++] = 0xFF; subBuf[pos++] = 0xFF; } // Q subBuf[pos++] = subchannel[i + 0]; subBuf[pos++] = subchannel[i + 1]; subBuf[pos++] = subchannel[i + 2]; subBuf[pos++] = subchannel[i + 3]; subBuf[pos++] = subchannel[i + 4]; subBuf[pos++] = subchannel[i + 5]; subBuf[pos++] = subchannel[i + 6]; subBuf[pos++] = subchannel[i + 7]; subBuf[pos++] = subchannel[i + 8]; subBuf[pos++] = subchannel[i + 9]; subBuf[pos++] = subchannel[i + 10]; subBuf[pos++] = subchannel[i + 11]; // R to W pos += 72; } return Interleave(subBuf); } public static byte[] Interleave(byte[] subchannel) { byte[] subBuf = new byte[subchannel.Length]; int outPos = 0; for(int inPos = 0; inPos < subchannel.Length; inPos += 96) { for(int i = 0; i < 12; i++) { // P subBuf[outPos + 0] += (byte)(subchannel[inPos + i + 0] & 0x80); subBuf[outPos + 1] += (byte)((subchannel[inPos + i + 0] & 0x40) << 1); subBuf[outPos + 2] += (byte)((subchannel[inPos + i + 0] & 0x20) << 2); subBuf[outPos + 3] += (byte)((subchannel[inPos + i + 0] & 0x10) << 3); subBuf[outPos + 4] += (byte)((subchannel[inPos + i + 0] & 0x08) << 4); subBuf[outPos + 5] += (byte)((subchannel[inPos + i + 0] & 0x04) << 5); subBuf[outPos + 6] += (byte)((subchannel[inPos + i + 0] & 0x02) << 6); subBuf[outPos + 7] += (byte)((subchannel[inPos + i + 0] & 0x01) << 7); // Q subBuf[outPos + 0] += (byte)((subchannel[inPos + i + 12] & 0x80) >> 1); subBuf[outPos + 1] += (byte)(subchannel[inPos + i + 12] & 0x40); subBuf[outPos + 2] += (byte)((subchannel[inPos + i + 12] & 0x20) << 1); subBuf[outPos + 3] += (byte)((subchannel[inPos + i + 12] & 0x10) << 2); subBuf[outPos + 4] += (byte)((subchannel[inPos + i + 12] & 0x08) << 3); subBuf[outPos + 5] += (byte)((subchannel[inPos + i + 12] & 0x04) << 4); subBuf[outPos + 6] += (byte)((subchannel[inPos + i + 12] & 0x02) << 5); subBuf[outPos + 7] += (byte)((subchannel[inPos + i + 12] & 0x01) << 6); // R subBuf[outPos + 0] += (byte)((subchannel[inPos + i + 24] & 0x80) >> 2); subBuf[outPos + 1] += (byte)((subchannel[inPos + i + 24] & 0x40) >> 1); subBuf[outPos + 2] += (byte)(subchannel[inPos + i + 24] & 0x20); subBuf[outPos + 3] += (byte)((subchannel[inPos + i + 24] & 0x10) << 1); subBuf[outPos + 4] += (byte)((subchannel[inPos + i + 24] & 0x08) << 2); subBuf[outPos + 5] += (byte)((subchannel[inPos + i + 24] & 0x04) << 3); subBuf[outPos + 6] += (byte)((subchannel[inPos + i + 24] & 0x02) << 4); subBuf[outPos + 7] += (byte)((subchannel[inPos + i + 24] & 0x01) << 5); // S subBuf[outPos + 0] += (byte)((subchannel[inPos + i + 36] & 0x80) >> 3); subBuf[outPos + 1] += (byte)((subchannel[inPos + i + 36] & 0x40) >> 2); subBuf[outPos + 2] += (byte)((subchannel[inPos + i + 36] & 0x20) >> 1); subBuf[outPos + 3] += (byte)(subchannel[inPos + i + 36] & 0x10); subBuf[outPos + 4] += (byte)((subchannel[inPos + i + 36] & 0x08) << 1); subBuf[outPos + 5] += (byte)((subchannel[inPos + i + 36] & 0x04) << 2); subBuf[outPos + 6] += (byte)((subchannel[inPos + i + 36] & 0x02) << 3); subBuf[outPos + 7] += (byte)((subchannel[inPos + i + 36] & 0x01) << 4); // T subBuf[outPos + 0] += (byte)((subchannel[inPos + i + 48] & 0x80) >> 4); subBuf[outPos + 1] += (byte)((subchannel[inPos + i + 48] & 0x40) >> 3); subBuf[outPos + 2] += (byte)((subchannel[inPos + i + 48] & 0x20) >> 2); subBuf[outPos + 3] += (byte)((subchannel[inPos + i + 48] & 0x10) >> 1); subBuf[outPos + 4] += (byte)(subchannel[inPos + i + 48] & 0x08); subBuf[outPos + 5] += (byte)((subchannel[inPos + i + 48] & 0x04) << 1); subBuf[outPos + 6] += (byte)((subchannel[inPos + i + 48] & 0x02) << 2); subBuf[outPos + 7] += (byte)((subchannel[inPos + i + 48] & 0x01) << 3); // U subBuf[outPos + 0] += (byte)((subchannel[inPos + i + 60] & 0x80) >> 5); subBuf[outPos + 1] += (byte)((subchannel[inPos + i + 60] & 0x40) >> 4); subBuf[outPos + 2] += (byte)((subchannel[inPos + i + 60] & 0x20) >> 3); subBuf[outPos + 3] += (byte)((subchannel[inPos + i + 60] & 0x10) >> 2); subBuf[outPos + 4] += (byte)((subchannel[inPos + i + 60] & 0x08) >> 1); subBuf[outPos + 5] += (byte)(subchannel[inPos + i + 60] & 0x04); subBuf[outPos + 6] += (byte)((subchannel[inPos + i + 60] & 0x02) << 1); subBuf[outPos + 7] += (byte)((subchannel[inPos + i + 60] & 0x01) << 2); // V subBuf[outPos + 0] += (byte)((subchannel[inPos + i + 72] & 0x80) >> 6); subBuf[outPos + 1] += (byte)((subchannel[inPos + i + 72] & 0x40) >> 5); subBuf[outPos + 2] += (byte)((subchannel[inPos + i + 72] & 0x20) >> 4); subBuf[outPos + 3] += (byte)((subchannel[inPos + i + 72] & 0x10) >> 3); subBuf[outPos + 4] += (byte)((subchannel[inPos + i + 72] & 0x08) >> 2); subBuf[outPos + 5] += (byte)((subchannel[inPos + i + 72] & 0x04) >> 1); subBuf[outPos + 6] += (byte)(subchannel[inPos + i + 72] & 0x02); subBuf[outPos + 7] += (byte)((subchannel[inPos + i + 72] & 0x01) << 1); // W subBuf[outPos + 0] += (byte)((subchannel[inPos + i + 84] & 0x80) >> 7); subBuf[outPos + 1] += (byte)((subchannel[inPos + i + 84] & 0x40) >> 6); subBuf[outPos + 2] += (byte)((subchannel[inPos + i + 84] & 0x20) >> 5); subBuf[outPos + 3] += (byte)((subchannel[inPos + i + 84] & 0x10) >> 4); subBuf[outPos + 4] += (byte)((subchannel[inPos + i + 84] & 0x08) >> 3); subBuf[outPos + 5] += (byte)((subchannel[inPos + i + 84] & 0x04) >> 2); subBuf[outPos + 6] += (byte)((subchannel[inPos + i + 84] & 0x02) >> 1); subBuf[outPos + 7] += (byte)(subchannel[inPos + i + 84] & 0x01); outPos += 8; } } return subBuf; } public static byte[] Deinterleave(byte[] subchannel) { byte[] subBuf = new byte[subchannel.Length]; int inPos = 0; for(int outPos = 0; outPos < subchannel.Length; outPos += 96) { for(int i = 0; i < 12; i++) { // P subBuf[outPos + i + 0] += (byte)((subchannel[inPos + 0] & 0x80) >> 0); subBuf[outPos + i + 0] += (byte)((subchannel[inPos + 1] & 0x80) >> 1); subBuf[outPos + i + 0] += (byte)((subchannel[inPos + 2] & 0x80) >> 2); subBuf[outPos + i + 0] += (byte)((subchannel[inPos + 3] & 0x80) >> 3); subBuf[outPos + i + 0] += (byte)((subchannel[inPos + 4] & 0x80) >> 4); subBuf[outPos + i + 0] += (byte)((subchannel[inPos + 5] & 0x80) >> 5); subBuf[outPos + i + 0] += (byte)((subchannel[inPos + 6] & 0x80) >> 6); subBuf[outPos + i + 0] += (byte)((subchannel[inPos + 7] & 0x80) >> 7); // Q subBuf[outPos + i + 12] += (byte)((subchannel[inPos + 0] & 0x40) << 1); subBuf[outPos + i + 12] += (byte)((subchannel[inPos + 1] & 0x40) >> 0); subBuf[outPos + i + 12] += (byte)((subchannel[inPos + 2] & 0x40) >> 1); subBuf[outPos + i + 12] += (byte)((subchannel[inPos + 3] & 0x40) >> 2); subBuf[outPos + i + 12] += (byte)((subchannel[inPos + 4] & 0x40) >> 3); subBuf[outPos + i + 12] += (byte)((subchannel[inPos + 5] & 0x40) >> 4); subBuf[outPos + i + 12] += (byte)((subchannel[inPos + 6] & 0x40) >> 5); subBuf[outPos + i + 12] += (byte)((subchannel[inPos + 7] & 0x40) >> 6); // R subBuf[outPos + i + 24] += (byte)((subchannel[inPos + 0] & 0x20) << 2); subBuf[outPos + i + 24] += (byte)((subchannel[inPos + 1] & 0x20) << 1); subBuf[outPos + i + 24] += (byte)((subchannel[inPos + 2] & 0x20) >> 0); subBuf[outPos + i + 24] += (byte)((subchannel[inPos + 3] & 0x20) >> 1); subBuf[outPos + i + 24] += (byte)((subchannel[inPos + 4] & 0x20) >> 2); subBuf[outPos + i + 24] += (byte)((subchannel[inPos + 5] & 0x20) >> 3); subBuf[outPos + i + 24] += (byte)((subchannel[inPos + 6] & 0x20) >> 4); subBuf[outPos + i + 24] += (byte)((subchannel[inPos + 7] & 0x20) >> 5); // S subBuf[outPos + i + 36] += (byte)((subchannel[inPos + 0] & 0x10) << 3); subBuf[outPos + i + 36] += (byte)((subchannel[inPos + 1] & 0x10) << 2); subBuf[outPos + i + 36] += (byte)((subchannel[inPos + 2] & 0x10) << 1); subBuf[outPos + i + 36] += (byte)((subchannel[inPos + 3] & 0x10) >> 0); subBuf[outPos + i + 36] += (byte)((subchannel[inPos + 4] & 0x10) >> 1); subBuf[outPos + i + 36] += (byte)((subchannel[inPos + 5] & 0x10) >> 2); subBuf[outPos + i + 36] += (byte)((subchannel[inPos + 6] & 0x10) >> 3); subBuf[outPos + i + 36] += (byte)((subchannel[inPos + 7] & 0x10) >> 4); // T subBuf[outPos + i + 48] += (byte)((subchannel[inPos + 0] & 0x8) << 4); subBuf[outPos + i + 48] += (byte)((subchannel[inPos + 1] & 0x8) << 3); subBuf[outPos + i + 48] += (byte)((subchannel[inPos + 2] & 0x8) << 2); subBuf[outPos + i + 48] += (byte)((subchannel[inPos + 3] & 0x8) << 1); subBuf[outPos + i + 48] += (byte)((subchannel[inPos + 4] & 0x8) >> 0); subBuf[outPos + i + 48] += (byte)((subchannel[inPos + 5] & 0x8) >> 1); subBuf[outPos + i + 48] += (byte)((subchannel[inPos + 6] & 0x8) >> 2); subBuf[outPos + i + 48] += (byte)((subchannel[inPos + 7] & 0x8) >> 3); // U subBuf[outPos + i + 60] += (byte)((subchannel[inPos + 0] & 0x4) << 5); subBuf[outPos + i + 60] += (byte)((subchannel[inPos + 1] & 0x4) << 4); subBuf[outPos + i + 60] += (byte)((subchannel[inPos + 2] & 0x4) << 3); subBuf[outPos + i + 60] += (byte)((subchannel[inPos + 3] & 0x4) << 2); subBuf[outPos + i + 60] += (byte)((subchannel[inPos + 4] & 0x4) << 1); subBuf[outPos + i + 60] += (byte)((subchannel[inPos + 5] & 0x4) >> 0); subBuf[outPos + i + 60] += (byte)((subchannel[inPos + 6] & 0x4) >> 1); subBuf[outPos + i + 60] += (byte)((subchannel[inPos + 7] & 0x4) >> 2); // V subBuf[outPos + i + 72] += (byte)((subchannel[inPos + 0] & 0x2) << 6); subBuf[outPos + i + 72] += (byte)((subchannel[inPos + 1] & 0x2) << 5); subBuf[outPos + i + 72] += (byte)((subchannel[inPos + 2] & 0x2) << 4); subBuf[outPos + i + 72] += (byte)((subchannel[inPos + 3] & 0x2) << 3); subBuf[outPos + i + 72] += (byte)((subchannel[inPos + 4] & 0x2) << 2); subBuf[outPos + i + 72] += (byte)((subchannel[inPos + 5] & 0x2) << 1); subBuf[outPos + i + 72] += (byte)((subchannel[inPos + 6] & 0x2) >> 0); subBuf[outPos + i + 72] += (byte)((subchannel[inPos + 7] & 0x2) >> 1); // W subBuf[outPos + i + 84] += (byte)((subchannel[inPos + 0] & 0x1) << 7); subBuf[outPos + i + 84] += (byte)((subchannel[inPos + 1] & 0x1) << 6); subBuf[outPos + i + 84] += (byte)((subchannel[inPos + 2] & 0x1) << 5); subBuf[outPos + i + 84] += (byte)((subchannel[inPos + 3] & 0x1) << 4); subBuf[outPos + i + 84] += (byte)((subchannel[inPos + 4] & 0x1) << 3); subBuf[outPos + i + 84] += (byte)((subchannel[inPos + 5] & 0x1) << 2); subBuf[outPos + i + 84] += (byte)((subchannel[inPos + 6] & 0x1) << 1); subBuf[outPos + i + 84] += (byte)((subchannel[inPos + 7] & 0x1) >> 0); inPos += 8; } } return subBuf; } public static string PrettifyQ(byte[] subBuf, bool bcd, long lba, bool corruptedPause, bool pause, bool rwEmpty) { CRC16CCITTContext.Data(subBuf, 10, out byte[] crc); bool crcOk = crc[0] == subBuf[10] && crc[1] == subBuf[11]; long minute = (lba + 150) / 4500; long second = ((lba + 150) % 4500) / 75; long frame = (lba + 150) % 4500 % 75; string area; int control = (subBuf[0] & 0xF0) / 16; int adr = subBuf[0] & 0x0F; string controlInfo = ((control & 0xC) / 4) switch { 0 => $"stereo audio {((control & 0x01) == 1 ? "with" : "without")} pre-emphasis", 1 => $"{((control & 0x01) == 1 ? "incremental" : "uninterrupted")} data", 2 => $"quadraphonic audio {((control & 0x01) == 1 ? "with" : "without")} pre-emphasis", _ => $"reserved control value {control & 0x01}" }; string copy = (control & 0x02) > 0 ? "copy permitted" : "copy prohibited"; if(bcd) BcdToBinaryQ(subBuf); int qPos = ((subBuf[3] * 60 * 75) + (subBuf[4] * 75) + subBuf[5]) - 150; byte pmin = subBuf[7]; byte psec = subBuf[8]; int qStart = ((subBuf[7] * 60 * 75) + (subBuf[8] * 75) + subBuf[9]) - 150; int nextPos = ((subBuf[3] * 60 * 75) + (subBuf[4] * 75) + subBuf[5]) - 150; byte zero = subBuf[6]; int maxOut = ((subBuf[7] * 60 * 75) + (subBuf[8] * 75) + subBuf[9]) - 150; bool final = subBuf[3] == 0xFF && subBuf[4] == 0xFF && subBuf[5] == 0xFF; BinaryToBcdQ(subBuf); if(lba < 0) { area = "Lead-In"; switch(adr) { case 1 when subBuf[2] < 0xA0: return $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q mode {adr} position: {subBuf[3]:X2}:{subBuf[4]:X2}:{subBuf[5]:X2} (LBA {qPos}), track {subBuf[2]:X} starts at {subBuf[7]:X2}:{subBuf[8]:X2}:{subBuf[9]:X2} (LBA {qStart}), Q CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}"; case 1 when subBuf[2] == 0xA0: { string format = subBuf[8] switch { 0x00 => "CD-DA / CD-ROM", 0x10 => "CD-i", 0x20 => "CD-ROM XA", _ => $"unknown {subBuf[0]:X2}" }; return $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q mode {adr} position: {subBuf[3]:X2}:{subBuf[4]:X2}:{subBuf[5]:X2} (LBA {qPos}), track {subBuf[2]:X} is first program area track in {format} format, Q CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}"; } case 1 when subBuf[2] == 0xA1: return $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q mode {adr} position: {subBuf[3]:X2}:{subBuf[4]:X2}:{subBuf[5]:X2} (LBA {qPos}), track {subBuf[2]:X} is last program area track, Q CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}"; case 1: return subBuf[2] == 0xA2 ? $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q mode {adr} position: {subBuf[3]:X2}:{subBuf[4]:X2}:{subBuf[5]:X2} (LBA {qPos}), track {subBuf[2]:X} starts at {subBuf[7]:X2}{subBuf[8]:X2}{subBuf[9]:X2} (LBA {qStart}), Q CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}" : $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q: {subBuf[0]:X2} {subBuf[1]:X2} {subBuf[2]:X2} {subBuf[3]:X2} {subBuf[4]:X2} {subBuf[5]:X2} {subBuf[6]:X2} {subBuf[7]:X2} {subBuf[8]:X2} {subBuf[9]:X2} CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}"; case 2: return $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q mode {adr} MCN: {DecodeMcn(subBuf)} frame {subBuf[9]:X2} CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}"; } if(adr != 5) return $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q: {subBuf[0]:X2} {subBuf[1]:X2} {subBuf[2]:X2} {subBuf[3]:X2} {subBuf[4]:X2} {subBuf[5]:X2} {subBuf[6]:X2} {subBuf[7]:X2} {subBuf[8]:X2} {subBuf[9]:X2} CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}"; if(subBuf[2] <= 0x40) { return $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q mode {adr} skip interval start time {subBuf[7]:X2}{subBuf[8]:X2}{subBuf[9]:X2}, skip interval stop time {subBuf[3]:X2}{subBuf[4]:X2}{subBuf[5]:X2}, CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}"; } if(subBuf[2] == 0xB0) { return final ? $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q mode {adr} next program area can start at {subBuf[3]:X2}:{subBuf[4]:X2}:{subBuf[5]:X2} (LBA {nextPos}), last-session, {zero} mode 5 pointers, CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}" : $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q mode {adr} next program area can start at {subBuf[3]:X2}:{subBuf[4]:X2}:{subBuf[5]:X2} (LBA {nextPos}), maximum Lead-out at {subBuf[7]:X2}:{subBuf[8]:X2}:{subBuf[9]:X2} (LBA {maxOut}), {zero} mode 5 pointers, CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}"; } if(subBuf[2] == 0xB1) { return $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q mode {adr}, {pmin} skip interval pointers, {psec} skip track assignments, CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}"; } if(subBuf[2] != 0xB2 && subBuf[2] != 0xB3 && subBuf[2] != 0xB4) return subBuf[2] == 0xC0 ? $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q mode {adr}, ATIP values {subBuf[3]:X2}, {subBuf[4]:X2}, {subBuf[5]:X2}, first disc Lead-in starts at {subBuf[7]:X2}{subBuf[8]:X2}{subBuf[9]:X2} (LBA {qStart}), CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}" : $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q: {subBuf[0]:X2} {subBuf[1]:X2} {subBuf[2]:X2} {subBuf[3]:X2} {subBuf[4]:X2} {subBuf[5]:X2} {subBuf[6]:X2} {subBuf[7]:X2} {subBuf[8]:X2} {subBuf[9]:X2} CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}"; string skipTracks = $"{subBuf[3]:X2}"; if(subBuf[4] > 0) skipTracks += $", {subBuf[4]:X2}"; if(subBuf[5] > 0) skipTracks += $", {subBuf[4]:X2}"; if(subBuf[7] > 0) skipTracks += $", {subBuf[4]:X2}"; if(subBuf[8] > 0) skipTracks += $", {subBuf[4]:X2}"; if(subBuf[9] > 0) skipTracks += $", {subBuf[4]:X2}"; return $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q mode {adr}, tracks {skipTracks} to be skipped, CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}"; } area = subBuf[1] == 0xAA ? "Lead-out" : "Program"; return adr switch { 1 => $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q mode {adr} position: track {subBuf[1]:X} index {subBuf[2]:X} relative position {subBuf[3]:X2}:{subBuf[4]:X2}:{subBuf[5]:X2} (LBA {qPos + 150}), absolute position {subBuf[7]:X2}:{subBuf[8]:X2}:{subBuf[9]:X2} (LBA {qStart}), Q CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}", 2 => $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q mode {adr} MCN: {DecodeMcn(subBuf)} frame {subBuf[9]:X2} CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}", 3 => $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q mode {adr} ISRC: {DecodeIsrc(subBuf)} frame {subBuf[9]:X2} CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}", _ => $"{minute:D2}:{second:D2}:{frame:D2} - LBA {lba,6}: {area} area, {(corruptedPause ? "corrupted pause" : pause ? "pause" : "not pause")}, {controlInfo}, {copy}, Q: {subBuf[0]:X2} {subBuf[1]:X2} {subBuf[2]:X2} {subBuf[3]:X2} {subBuf[4]:X2} {subBuf[5]:X2} {subBuf[6]:X2} {subBuf[7]:X2} {subBuf[8]:X2} {subBuf[9]:X2} CRC 0x{subBuf[10]:X2}{subBuf[11]:X2} ({(crcOk ? "OK" : "BAD")}), R-W {(rwEmpty ? "empty" : "not empty")}" }; } public static string DecodeIsrc(byte[] q) => $"{_isrcTable[q[1] / 4]}{_isrcTable[((q[1] & 3) * 16) + (q[2] / 16)]}{_isrcTable[((q[2] & 0xF) * 4) + (q[3] / 64)]}{_isrcTable[q[3] & 0x3F]}{_isrcTable[q[4] / 4]}{q[5]:X2}{q[6]:X2}{q[7]:X2}{q[8] / 16:X1}"; public static string DecodeMcn(byte[] q) => $"{q[1]:X2}{q[2]:X2}{q[3]:X2}{q[4]:X2}{q[5]:X2}{q[6]:X2}{q[7] / 8:X}"; public static byte GetIsrcCode(char c) { switch(c) { case '0': return 0x00; case '1': return 0x01; case '2': return 0x02; case '3': return 0x03; case '4': return 0x04; case '5': return 0x05; case '6': return 0x06; case '7': return 0x07; case '8': return 0x08; case '9': return 0x09; case 'A': return 0x11; case 'B': return 0x12; case 'C': return 0x13; case 'D': return 0x14; case 'E': return 0x15; case 'F': return 0x16; case 'G': return 0x17; case 'H': return 0x18; case 'I': return 0x19; case 'J': return 0x1A; case 'K': return 0x1B; case 'L': return 0x1C; case 'M': return 0x1D; case 'N': return 0x1E; case 'O': return 0x1F; case 'P': return 0x20; case 'Q': return 0x21; case 'R': return 0x22; case 'S': return 0x23; case 'T': return 0x24; case 'U': return 0x25; case 'V': return 0x26; case 'W': return 0x27; case 'X': return 0x28; case 'Y': return 0x29; case 'Z': return 0x2A; default: return 0x00; } } public static byte[] Generate(int sector, uint trackSequence, int pregap, int trackStart, byte flags, byte index) { bool isPregap = sector < 0 || sector <= trackStart + pregap; if(index == 0) index = (byte)(isPregap ? 0 : 1); byte[] sub = new byte[96]; // P if(isPregap) { sub[0] = 0xFF; sub[1] = 0xFF; sub[2] = 0xFF; sub[3] = 0xFF; sub[4] = 0xFF; sub[5] = 0xFF; sub[6] = 0xFF; sub[7] = 0xFF; sub[8] = 0xFF; sub[9] = 0xFF; sub[10] = 0xFF; sub[11] = 0xFF; } // Q byte[] q = new byte[12]; q[0] = (byte)((flags << 4) + 1); q[1] = (byte)trackSequence; q[2] = index; int relative; if(isPregap) relative = (pregap + trackStart) - sector; else relative = sector - trackStart; sector += 150; int min = relative / 60 / 75; int sec = (relative / 75) - (min * 60); int frame = relative - (min * 60 * 75) - (sec * 75); int amin = sector / 60 / 75; int asec = (sector / 75) - (amin * 60); int aframe = sector - (amin * 60 * 75) - (asec * 75); q[3] = (byte)min; q[4] = (byte)sec; q[5] = (byte)frame; q[7] = (byte)amin; q[8] = (byte)asec; q[9] = (byte)aframe; q[1] = (byte)(((q[1] / 10) << 4) + (q[1] % 10)); q[2] = (byte)(((q[2] / 10) << 4) + (q[2] % 10)); q[3] = (byte)(((q[3] / 10) << 4) + (q[3] % 10)); q[4] = (byte)(((q[4] / 10) << 4) + (q[4] % 10)); q[5] = (byte)(((q[5] / 10) << 4) + (q[5] % 10)); q[6] = (byte)(((q[6] / 10) << 4) + (q[6] % 10)); q[7] = (byte)(((q[7] / 10) << 4) + (q[7] % 10)); q[8] = (byte)(((q[8] / 10) << 4) + (q[8] % 10)); q[9] = (byte)(((q[9] / 10) << 4) + (q[9] % 10)); CRC16CCITTContext.Data(q, 10, out byte[] qCrc); q[10] = qCrc[0]; q[11] = qCrc[1]; Array.Copy(q, 0, sub, 12, 12); return Interleave(sub); } } }