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#if NET40 || NET461
using System;using System.Collections.Generic;using System.Text;using System.Collections;using System.Linq;using System.Reflection;
namespace Apewer.Internals.QrCode{ internal class QRCodeGenerator : IDisposable { private static readonly char[] numTable = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' }; private static readonly char[] alphanumEncTable = { '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', ' ', '$', '%', '*', '+', '-', '.', '/', ':' }; private int[] capacityBaseValues = { 41, 25, 17, 10, 34, 20, 14, 8, 27, 16, 11, 7, 17, 10, 7, 4, 77, 47, 32, 20, 63, 38, 26, 16, 48, 29, 20, 12, 34, 20, 14, 8, 127, 77, 53, 32, 101, 61, 42, 26, 77, 47, 32, 20, 58, 35, 24, 15, 187, 114, 78, 48, 149, 90, 62, 38, 111, 67, 46, 28, 82, 50, 34, 21, 255, 154, 106, 65, 202, 122, 84, 52, 144, 87, 60, 37, 106, 64, 44, 27, 322, 195, 134, 82, 255, 154, 106, 65, 178, 108, 74, 45, 139, 84, 58, 36, 370, 224, 154, 95, 293, 178, 122, 75, 207, 125, 86, 53, 154, 93, 64, 39, 461, 279, 192, 118, 365, 221, 152, 93, 259, 157, 108, 66, 202, 122, 84, 52, 552, 335, 230, 141, 432, 262, 180, 111, 312, 189, 130, 80, 235, 143, 98, 60, 652, 395, 271, 167, 513, 311, 213, 131, 364, 221, 151, 93, 288, 174, 119, 74, 772, 468, 321, 198, 604, 366, 251, 155, 427, 259, 177, 109, 331, 200, 137, 85, 883, 535, 367, 226, 691, 419, 287, 177, 489, 296, 203, 125, 374, 227, 155, 96, 1022, 619, 425, 262, 796, 483, 331, 204, 580, 352, 241, 149, 427, 259, 177, 109, 1101, 667, 458, 282, 871, 528, 362, 223, 621, 376, 258, 159, 468, 283, 194, 120, 1250, 758, 520, 320, 991, 600, 412, 254, 703, 426, 292, 180, 530, 321, 220, 136, 1408, 854, 586, 361, 1082, 656, 450, 277, 775, 470, 322, 198, 602, 365, 250, 154, 1548, 938, 644, 397, 1212, 734, 504, 310, 876, 531, 364, 224, 674, 408, 280, 173, 1725, 1046, 718, 442, 1346, 816, 560, 345, 948, 574, 394, 243, 746, 452, 310, 191, 1903, 1153, 792, 488, 1500, 909, 624, 384, 1063, 644, 442, 272, 813, 493, 338, 208, 2061, 1249, 858, 528, 1600, 970, 666, 410, 1159, 702, 482, 297, 919, 557, 382, 235, 2232, 1352, 929, 572, 1708, 1035, 711, 438, 1224, 742, 509, 314, 969, 587, 403, 248, 2409, 1460, 1003, 618, 1872, 1134, 779, 480, 1358, 823, 565, 348, 1056, 640, 439, 270, 2620, 1588, 1091, 672, 2059, 1248, 857, 528, 1468, 890, 611, 376, 1108, 672, 461, 284, 2812, 1704, 1171, 721, 2188, 1326, 911, 561, 1588, 963, 661, 407, 1228, 744, 511, 315, 3057, 1853, 1273, 784, 2395, 1451, 997, 614, 1718, 1041, 715, 440, 1286, 779, 535, 330, 3283, 1990, 1367, 842, 2544, 1542, 1059, 652, 1804, 1094, 751, 462, 1425, 864, 593, 365, 3517, 2132, 1465, 902, 2701, 1637, 1125, 692, 1933, 1172, 805, 496, 1501, 910, 625, 385, 3669, 2223, 1528, 940, 2857, 1732, 1190, 732, 2085, 1263, 868, 534, 1581, 958, 658, 405, 3909, 2369, 1628, 1002, 3035, 1839, 1264, 778, 2181, 1322, 908, 559, 1677, 1016, 698, 430, 4158, 2520, 1732, 1066, 3289, 1994, 1370, 843, 2358, 1429, 982, 604, 1782, 1080, 742, 457, 4417, 2677, 1840, 1132, 3486, 2113, 1452, 894, 2473, 1499, 1030, 634, 1897, 1150, 790, 486, 4686, 2840, 1952, 1201, 3693, 2238, 1538, 947, 2670, 1618, 1112, 684, 2022, 1226, 842, 518, 4965, 3009, 2068, 1273, 3909, 2369, 1628, 1002, 2805, 1700, 1168, 719, 2157, 1307, 898, 553, 5253, 3183, 2188, 1347, 4134, 2506, 1722, 1060, 2949, 1787, 1228, 756, 2301, 1394, 958, 590, 5529, 3351, 2303, 1417, 4343, 2632, 1809, 1113, 3081, 1867, 1283, 790, 2361, 1431, 983, 605, 5836, 3537, 2431, 1496, 4588, 2780, 1911, 1176, 3244, 1966, 1351, 832, 2524, 1530, 1051, 647, 6153, 3729, 2563, 1577, 4775, 2894, 1989, 1224, 3417, 2071, 1423, 876, 2625, 1591, 1093, 673, 6479, 3927, 2699, 1661, 5039, 3054, 2099, 1292, 3599, 2181, 1499, 923, 2735, 1658, 1139, 701, 6743, 4087, 2809, 1729, 5313, 3220, 2213, 1362, 3791, 2298, 1579, 972, 2927, 1774, 1219, 750, 7089, 4296, 2953, 1817, 5596, 3391, 2331, 1435, 3993, 2420, 1663, 1024, 3057, 1852, 1273, 784 }; private int[] capacityECCBaseValues = { 19, 7, 1, 19, 0, 0, 16, 10, 1, 16, 0, 0, 13, 13, 1, 13, 0, 0, 9, 17, 1, 9, 0, 0, 34, 10, 1, 34, 0, 0, 28, 16, 1, 28, 0, 0, 22, 22, 1, 22, 0, 0, 16, 28, 1, 16, 0, 0, 55, 15, 1, 55, 0, 0, 44, 26, 1, 44, 0, 0, 34, 18, 2, 17, 0, 0, 26, 22, 2, 13, 0, 0, 80, 20, 1, 80, 0, 0, 64, 18, 2, 32, 0, 0, 48, 26, 2, 24, 0, 0, 36, 16, 4, 9, 0, 0, 108, 26, 1, 108, 0, 0, 86, 24, 2, 43, 0, 0, 62, 18, 2, 15, 2, 16, 46, 22, 2, 11, 2, 12, 136, 18, 2, 68, 0, 0, 108, 16, 4, 27, 0, 0, 76, 24, 4, 19, 0, 0, 60, 28, 4, 15, 0, 0, 156, 20, 2, 78, 0, 0, 124, 18, 4, 31, 0, 0, 88, 18, 2, 14, 4, 15, 66, 26, 4, 13, 1, 14, 194, 24, 2, 97, 0, 0, 154, 22, 2, 38, 2, 39, 110, 22, 4, 18, 2, 19, 86, 26, 4, 14, 2, 15, 232, 30, 2, 116, 0, 0, 182, 22, 3, 36, 2, 37, 132, 20, 4, 16, 4, 17, 100, 24, 4, 12, 4, 13, 274, 18, 2, 68, 2, 69, 216, 26, 4, 43, 1, 44, 154, 24, 6, 19, 2, 20, 122, 28, 6, 15, 2, 16, 324, 20, 4, 81, 0, 0, 254, 30, 1, 50, 4, 51, 180, 28, 4, 22, 4, 23, 140, 24, 3, 12, 8, 13, 370, 24, 2, 92, 2, 93, 290, 22, 6, 36, 2, 37, 206, 26, 4, 20, 6, 21, 158, 28, 7, 14, 4, 15, 428, 26, 4, 107, 0, 0, 334, 22, 8, 37, 1, 38, 244, 24, 8, 20, 4, 21, 180, 22, 12, 11, 4, 12, 461, 30, 3, 115, 1, 116, 365, 24, 4, 40, 5, 41, 261, 20, 11, 16, 5, 17, 197, 24, 11, 12, 5, 13, 523, 22, 5, 87, 1, 88, 415, 24, 5, 41, 5, 42, 295, 30, 5, 24, 7, 25, 223, 24, 11, 12, 7, 13, 589, 24, 5, 98, 1, 99, 453, 28, 7, 45, 3, 46, 325, 24, 15, 19, 2, 20, 253, 30, 3, 15, 13, 16, 647, 28, 1, 107, 5, 108, 507, 28, 10, 46, 1, 47, 367, 28, 1, 22, 15, 23, 283, 28, 2, 14, 17, 15, 721, 30, 5, 120, 1, 121, 563, 26, 9, 43, 4, 44, 397, 28, 17, 22, 1, 23, 313, 28, 2, 14, 19, 15, 795, 28, 3, 113, 4, 114, 627, 26, 3, 44, 11, 45, 445, 26, 17, 21, 4, 22, 341, 26, 9, 13, 16, 14, 861, 28, 3, 107, 5, 108, 669, 26, 3, 41, 13, 42, 485, 30, 15, 24, 5, 25, 385, 28, 15, 15, 10, 16, 932, 28, 4, 116, 4, 117, 714, 26, 17, 42, 0, 0, 512, 28, 17, 22, 6, 23, 406, 30, 19, 16, 6, 17, 1006, 28, 2, 111, 7, 112, 782, 28, 17, 46, 0, 0, 568, 30, 7, 24, 16, 25, 442, 24, 34, 13, 0, 0, 1094, 30, 4, 121, 5, 122, 860, 28, 4, 47, 14, 48, 614, 30, 11, 24, 14, 25, 464, 30, 16, 15, 14, 16, 1174, 30, 6, 117, 4, 118, 914, 28, 6, 45, 14, 46, 664, 30, 11, 24, 16, 25, 514, 30, 30, 16, 2, 17, 1276, 26, 8, 106, 4, 107, 1000, 28, 8, 47, 13, 48, 718, 30, 7, 24, 22, 25, 538, 30, 22, 15, 13, 16, 1370, 28, 10, 114, 2, 115, 1062, 28, 19, 46, 4, 47, 754, 28, 28, 22, 6, 23, 596, 30, 33, 16, 4, 17, 1468, 30, 8, 122, 4, 123, 1128, 28, 22, 45, 3, 46, 808, 30, 8, 23, 26, 24, 628, 30, 12, 15, 28, 16, 1531, 30, 3, 117, 10, 118, 1193, 28, 3, 45, 23, 46, 871, 30, 4, 24, 31, 25, 661, 30, 11, 15, 31, 16, 1631, 30, 7, 116, 7, 117, 1267, 28, 21, 45, 7, 46, 911, 30, 1, 23, 37, 24, 701, 30, 19, 15, 26, 16, 1735, 30, 5, 115, 10, 116, 1373, 28, 19, 47, 10, 48, 985, 30, 15, 24, 25, 25, 745, 30, 23, 15, 25, 16, 1843, 30, 13, 115, 3, 116, 1455, 28, 2, 46, 29, 47, 1033, 30, 42, 24, 1, 25, 793, 30, 23, 15, 28, 16, 1955, 30, 17, 115, 0, 0, 1541, 28, 10, 46, 23, 47, 1115, 30, 10, 24, 35, 25, 845, 30, 19, 15, 35, 16, 2071, 30, 17, 115, 1, 116, 1631, 28, 14, 46, 21, 47, 1171, 30, 29, 24, 19, 25, 901, 30, 11, 15, 46, 16, 2191, 30, 13, 115, 6, 116, 1725, 28, 14, 46, 23, 47, 1231, 30, 44, 24, 7, 25, 961, 30, 59, 16, 1, 17, 2306, 30, 12, 121, 7, 122, 1812, 28, 12, 47, 26, 48, 1286, 30, 39, 24, 14, 25, 986, 30, 22, 15, 41, 16, 2434, 30, 6, 121, 14, 122, 1914, 28, 6, 47, 34, 48, 1354, 30, 46, 24, 10, 25, 1054, 30, 2, 15, 64, 16, 2566, 30, 17, 122, 4, 123, 1992, 28, 29, 46, 14, 47, 1426, 30, 49, 24, 10, 25, 1096, 30, 24, 15, 46, 16, 2702, 30, 4, 122, 18, 123, 2102, 28, 13, 46, 32, 47, 1502, 30, 48, 24, 14, 25, 1142, 30, 42, 15, 32, 16, 2812, 30, 20, 117, 4, 118, 2216, 28, 40, 47, 7, 48, 1582, 30, 43, 24, 22, 25, 1222, 30, 10, 15, 67, 16, 2956, 30, 19, 118, 6, 119, 2334, 28, 18, 47, 31, 48, 1666, 30, 34, 24, 34, 25, 1276, 30, 20, 15, 61, 16 }; private int[] alignmentPatternBaseValues = { 0, 0, 0, 0, 0, 0, 0, 6, 18, 0, 0, 0, 0, 0, 6, 22, 0, 0, 0, 0, 0, 6, 26, 0, 0, 0, 0, 0, 6, 30, 0, 0, 0, 0, 0, 6, 34, 0, 0, 0, 0, 0, 6, 22, 38, 0, 0, 0, 0, 6, 24, 42, 0, 0, 0, 0, 6, 26, 46, 0, 0, 0, 0, 6, 28, 50, 0, 0, 0, 0, 6, 30, 54, 0, 0, 0, 0, 6, 32, 58, 0, 0, 0, 0, 6, 34, 62, 0, 0, 0, 0, 6, 26, 46, 66, 0, 0, 0, 6, 26, 48, 70, 0, 0, 0, 6, 26, 50, 74, 0, 0, 0, 6, 30, 54, 78, 0, 0, 0, 6, 30, 56, 82, 0, 0, 0, 6, 30, 58, 86, 0, 0, 0, 6, 34, 62, 90, 0, 0, 0, 6, 28, 50, 72, 94, 0, 0, 6, 26, 50, 74, 98, 0, 0, 6, 30, 54, 78, 102, 0, 0, 6, 28, 54, 80, 106, 0, 0, 6, 32, 58, 84, 110, 0, 0, 6, 30, 58, 86, 114, 0, 0, 6, 34, 62, 90, 118, 0, 0, 6, 26, 50, 74, 98, 122, 0, 6, 30, 54, 78, 102, 126, 0, 6, 26, 52, 78, 104, 130, 0, 6, 30, 56, 82, 108, 134, 0, 6, 34, 60, 86, 112, 138, 0, 6, 30, 58, 86, 114, 142, 0, 6, 34, 62, 90, 118, 146, 0, 6, 30, 54, 78, 102, 126, 150, 6, 24, 50, 76, 102, 128, 154, 6, 28, 54, 80, 106, 132, 158, 6, 32, 58, 84, 110, 136, 162, 6, 26, 54, 82, 110, 138, 166, 6, 30, 58, 86, 114, 142, 170 }; private int[] remainderBits = { 0, 7, 7, 7, 7, 7, 0, 0, 0, 0, 0, 0, 0, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 0, 0, 0 };
private List<AlignmentPattern> alignmentPatternTable; private List<ECCInfo> capacityECCTable; private List<VersionInfo> capacityTable; private List<Antilog> galoisField; private Dictionary<char, int> alphanumEncDict;
public enum EciMode { Default = 0, Iso8859_1 = 3, Iso8859_2 = 4, Utf8 = 26 }
public QRCodeGenerator() { this.CreateAntilogTable(); this.CreateAlphanumEncDict(); this.CreateCapacityTable(); this.CreateCapacityECCTable(); this.CreateAlignmentPatternTable(); }
public QRCodeData CreateQrCode(PayloadGenerator.Payload payload) { return CreateQrCode(payload.ToString(), payload.EccLevel, false, false, payload.EciMode, payload.Version); }
public QRCodeData CreateQrCode(PayloadGenerator.Payload payload, ECCLevel eccLevel) { return CreateQrCode(payload.ToString(), eccLevel, false, false, payload.EciMode, payload.Version); }
public QRCodeData CreateQrCode(string plainText, ECCLevel eccLevel, bool forceUtf8 = false, bool utf8BOM = false, EciMode eciMode = EciMode.Default, int requestedVersion = -1) { EncodingMode encoding = GetEncodingFromPlaintext(plainText, forceUtf8); var codedText = this.PlainTextToBinary(plainText, encoding, eciMode, utf8BOM, forceUtf8); var dataInputLength = this.GetDataLength(encoding, plainText, codedText, forceUtf8); int version = requestedVersion; if (version == -1) { version = this.GetVersion(dataInputLength, encoding, eccLevel); }
string modeIndicator = String.Empty; if (eciMode != EciMode.Default) { modeIndicator = DecToBin((int)EncodingMode.ECI, 4); modeIndicator += DecToBin((int)eciMode, 8); } modeIndicator += DecToBin((int)encoding, 4); var countIndicator = DecToBin(dataInputLength, this.GetCountIndicatorLength(version, encoding)); var bitString = modeIndicator + countIndicator;
bitString += codedText;
//Fill up data code word
var eccInfo = this.capacityECCTable.Single(x => x.Version == version && x.ErrorCorrectionLevel.Equals(eccLevel)); var dataLength = eccInfo.TotalDataCodewords * 8; var lengthDiff = dataLength - bitString.Length; if (lengthDiff > 0) bitString += new string('0', Math.Min(lengthDiff, 4)); if ((bitString.Length % 8) != 0) bitString += new string('0', 8 - (bitString.Length % 8)); while (bitString.Length < dataLength) bitString += "1110110000010001"; if (bitString.Length > dataLength) bitString = bitString.Substring(0, dataLength);
//Calculate error correction words
var codeWordWithECC = new List<CodewordBlock>(); for (var i = 0; i < eccInfo.BlocksInGroup1; i++) { var bitStr = bitString.Substring(i * eccInfo.CodewordsInGroup1 * 8, eccInfo.CodewordsInGroup1 * 8); var bitBlockList = this.BinaryStringToBitBlockList(bitStr); var bitBlockListDec = this.BinaryStringListToDecList(bitBlockList); var eccWordList = this.CalculateECCWords(bitStr, eccInfo); var eccWordListDec = this.BinaryStringListToDecList(eccWordList); codeWordWithECC.Add( new CodewordBlock(1, i + 1, bitStr, bitBlockList, eccWordList, bitBlockListDec, eccWordListDec) ); } bitString = bitString.Substring(eccInfo.BlocksInGroup1 * eccInfo.CodewordsInGroup1 * 8); for (var i = 0; i < eccInfo.BlocksInGroup2; i++) { var bitStr = bitString.Substring(i * eccInfo.CodewordsInGroup2 * 8, eccInfo.CodewordsInGroup2 * 8); var bitBlockList = this.BinaryStringToBitBlockList(bitStr); var bitBlockListDec = this.BinaryStringListToDecList(bitBlockList); var eccWordList = this.CalculateECCWords(bitStr, eccInfo); var eccWordListDec = this.BinaryStringListToDecList(eccWordList); codeWordWithECC.Add(new CodewordBlock(2, i + 1, bitStr, bitBlockList, eccWordList, bitBlockListDec, eccWordListDec) ); }
//Interleave code words
var interleavedWordsSb = new StringBuilder(); for (var i = 0; i < Math.Max(eccInfo.CodewordsInGroup1, eccInfo.CodewordsInGroup2); i++) { foreach (var codeBlock in codeWordWithECC) if (codeBlock.CodeWords.Count > i) interleavedWordsSb.Append(codeBlock.CodeWords[i]); }
for (var i = 0; i < eccInfo.ECCPerBlock; i++) { foreach (var codeBlock in codeWordWithECC) if (codeBlock.ECCWords.Count > i) interleavedWordsSb.Append(codeBlock.ECCWords[i]); } interleavedWordsSb.Append(new string('0', this.remainderBits[version - 1])); var interleavedData = interleavedWordsSb.ToString();
//Place interleaved data on module matrix
var qr = new QRCodeData(version); var blockedModules = new List<Rectangle>(); ModulePlacer.PlaceFinderPatterns(ref qr, ref blockedModules); ModulePlacer.ReserveSeperatorAreas(qr.ModuleMatrix.Count, ref blockedModules); ModulePlacer.PlaceAlignmentPatterns(ref qr, this.alignmentPatternTable.Where(x => x.Version == version).Select(x => x.PatternPositions).First(), ref blockedModules); ModulePlacer.PlaceTimingPatterns(ref qr, ref blockedModules); ModulePlacer.PlaceDarkModule(ref qr, version, ref blockedModules); ModulePlacer.ReserveVersionAreas(qr.ModuleMatrix.Count, version, ref blockedModules); ModulePlacer.PlaceDataWords(ref qr, interleavedData, ref blockedModules); var maskVersion = ModulePlacer.MaskCode(ref qr, version, ref blockedModules, eccLevel); var formatStr = GetFormatString(eccLevel, maskVersion);
ModulePlacer.PlaceFormat(ref qr, formatStr); if (version >= 7) { var versionString = GetVersionString(version); ModulePlacer.PlaceVersion(ref qr, versionString); }
ModulePlacer.AddQuietZone(ref qr); return qr; }
private static string GetFormatString(ECCLevel level, int maskVersion) { var generator = "10100110111"; var fStrMask = "101010000010010";
var fStr = (level == ECCLevel.L) ? "01" : (level == ECCLevel.M) ? "00" : (level == ECCLevel.Q) ? "11" : "10"; fStr += DecToBin(maskVersion, 3); var fStrEcc = fStr.PadRight(15, '0').TrimStart('0'); while (fStrEcc.Length > 10) { var sb = new StringBuilder(); generator = generator.PadRight(fStrEcc.Length, '0'); for (var i = 0; i < fStrEcc.Length; i++) sb.Append((Convert.ToInt32(fStrEcc[i]) ^ Convert.ToInt32(generator[i])).ToString()); fStrEcc = sb.ToString().TrimStart('0'); } fStrEcc = fStrEcc.PadLeft(10, '0'); fStr += fStrEcc;
var sbMask = new StringBuilder(); for (var i = 0; i < fStr.Length; i++) sbMask.Append((Convert.ToInt32(fStr[i]) ^ Convert.ToInt32(fStrMask[i])).ToString()); return sbMask.ToString(); }
private static string GetVersionString(int version) { var generator = "1111100100101";
var vStr = DecToBin(version, 6); var vStrEcc = vStr.PadRight(18, '0').TrimStart('0'); while (vStrEcc.Length > 12) { var sb = new StringBuilder(); generator = generator.PadRight(vStrEcc.Length, '0'); for (var i = 0; i < vStrEcc.Length; i++) sb.Append((Convert.ToInt32(vStrEcc[i]) ^ Convert.ToInt32(generator[i])).ToString()); vStrEcc = sb.ToString().TrimStart('0'); } vStrEcc = vStrEcc.PadLeft(12, '0'); vStr += vStrEcc;
return vStr; }
private static class ModulePlacer { public static void AddQuietZone(ref QRCodeData qrCode) { var quietLine = new bool[qrCode.ModuleMatrix.Count + 8]; for (var i = 0; i < quietLine.Length; i++) quietLine[i] = false; for (var i = 0; i < 4; i++) qrCode.ModuleMatrix.Insert(0, new BitArray(quietLine)); for (var i = 0; i < 4; i++) qrCode.ModuleMatrix.Add(new BitArray(quietLine)); for (var i = 4; i < qrCode.ModuleMatrix.Count - 4; i++) { bool[] quietPart = { false, false, false, false }; var tmpLine = new List<bool>(quietPart); tmpLine.AddRange(qrCode.ModuleMatrix[i].Cast<bool>()); tmpLine.AddRange(quietPart); qrCode.ModuleMatrix[i] = new BitArray(tmpLine.ToArray()); } }
private static string ReverseString(string inp) { string newStr = string.Empty; if (inp.Length > 0) { for (int i = inp.Length - 1; i >= 0; i--) newStr += inp[i]; } return newStr; }
public static void PlaceVersion(ref QRCodeData qrCode, string versionStr) { var size = qrCode.ModuleMatrix.Count;
var vStr = ReverseString(versionStr);
for (var x = 0; x < 6; x++) { for (var y = 0; y < 3; y++) { qrCode.ModuleMatrix[y + size - 11][x] = vStr[x * 3 + y] == '1'; qrCode.ModuleMatrix[x][y + size - 11] = vStr[x * 3 + y] == '1'; } } }
public static void PlaceFormat(ref QRCodeData qrCode, string formatStr) { var size = qrCode.ModuleMatrix.Count; var fStr = ReverseString(formatStr); var modules = new[,] { { 8, 0, size - 1, 8 }, { 8, 1, size - 2, 8 }, { 8, 2, size - 3, 8 }, { 8, 3, size - 4, 8 }, { 8, 4, size - 5, 8 }, { 8, 5, size - 6, 8 }, { 8, 7, size - 7, 8 }, { 8, 8, size - 8, 8 }, { 7, 8, 8, size - 7 }, { 5, 8, 8, size - 6 }, { 4, 8, 8, size - 5 }, { 3, 8, 8, size - 4 }, { 2, 8, 8, size - 3 }, { 1, 8, 8, size - 2 }, { 0, 8, 8, size - 1 } }; for (var i = 0; i < 15; i++) { var p1 = new Point(modules[i, 0], modules[i, 1]); var p2 = new Point(modules[i, 2], modules[i, 3]); qrCode.ModuleMatrix[p1.Y][p1.X] = fStr[i] == '1'; qrCode.ModuleMatrix[p2.Y][p2.X] = fStr[i] == '1'; } }
public static int MaskCode(ref QRCodeData qrCode, int version, ref List<Rectangle> blockedModules, ECCLevel eccLevel) { var patternName = string.Empty; var patternScore = 0;
var size = qrCode.ModuleMatrix.Count;
var methods = typeof(MaskPattern).GetMethods(); foreach (var pattern in methods) { if (pattern.Name.Length == 8 && pattern.Name.StartsWith("Pattern")) { var qrTemp = new QRCodeData(version); for (var y = 0; y < size; y++) { for (var x = 0; x < size; x++) { qrTemp.ModuleMatrix[y][x] = qrCode.ModuleMatrix[y][x]; }
}
var formatStr = GetFormatString(eccLevel, Convert.ToInt32((pattern.Name.Substring(7, 1))) - 1); ModulePlacer.PlaceFormat(ref qrTemp, formatStr); if (version >= 7) { var versionString = GetVersionString(version); ModulePlacer.PlaceVersion(ref qrTemp, versionString); }
for (var x = 0; x < size; x++) { for (var y = 0; y < size; y++) { if (!IsBlocked(new Rectangle(x, y, 1, 1), blockedModules)) { qrTemp.ModuleMatrix[y][x] ^= (bool)pattern.Invoke(null, new object[] { x, y }); } } }
var score = MaskPattern.Score(ref qrTemp); if (string.IsNullOrEmpty(patternName) || patternScore > score) { patternName = pattern.Name; patternScore = score; }
} }
var patterMethod = null as MethodInfo; foreach (var i in typeof(MaskPattern).GetMethods()) { if (i.Name == patternName) { patterMethod = i; break; } }
for (var x = 0; x < size; x++) { for (var y = 0; y < size; y++) { if (!IsBlocked(new Rectangle(x, y, 1, 1), blockedModules)) { qrCode.ModuleMatrix[y][x] ^= (bool)patterMethod.Invoke(null, new object[] { x, y }); } } } return Convert.ToInt32(patterMethod.Name.Substring(patterMethod.Name.Length - 1, 1)) - 1; }
public static void PlaceDataWords(ref QRCodeData qrCode, string data, ref List<Rectangle> blockedModules) { var size = qrCode.ModuleMatrix.Count; var up = true; var datawords = new Queue<bool>(); for (int i = 0; i < data.Length; i++) { datawords.Enqueue(data[i] != '0'); } for (var x = size - 1; x >= 0; x = x - 2) { if (x == 6) x = 5; for (var yMod = 1; yMod <= size; yMod++) { int y; if (up) { y = size - yMod; if (datawords.Count > 0 && !IsBlocked(new Rectangle(x, y, 1, 1), blockedModules)) qrCode.ModuleMatrix[y][x] = datawords.Dequeue(); if (datawords.Count > 0 && x > 0 && !IsBlocked(new Rectangle(x - 1, y, 1, 1), blockedModules)) qrCode.ModuleMatrix[y][x - 1] = datawords.Dequeue(); } else { y = yMod - 1; if (datawords.Count > 0 && !IsBlocked(new Rectangle(x, y, 1, 1), blockedModules)) qrCode.ModuleMatrix[y][x] = datawords.Dequeue(); if (datawords.Count > 0 && x > 0 && !IsBlocked(new Rectangle(x - 1, y, 1, 1), blockedModules)) qrCode.ModuleMatrix[y][x - 1] = datawords.Dequeue(); } } up = !up; } }
public static void ReserveSeperatorAreas(int size, ref List<Rectangle> blockedModules) { blockedModules.AddRange(new[]{ new Rectangle(7, 0, 1, 8), new Rectangle(0, 7, 7, 1), new Rectangle(0, size-8, 8, 1), new Rectangle(7, size-7, 1, 7), new Rectangle(size-8, 0, 1, 8), new Rectangle(size-7, 7, 7, 1) }); }
public static void ReserveVersionAreas(int size, int version, ref List<Rectangle> blockedModules) { blockedModules.AddRange(new[]{ new Rectangle(8, 0, 1, 6), new Rectangle(8, 7, 1, 1), new Rectangle(0, 8, 6, 1), new Rectangle(7, 8, 2, 1), new Rectangle(size-8, 8, 8, 1), new Rectangle(8, size-7, 1, 7) });
if (version >= 7) { blockedModules.AddRange(new[]{ new Rectangle(size-11, 0, 3, 6), new Rectangle(0, size-11, 6, 3) }); } } public static void PlaceDarkModule(ref QRCodeData qrCode, int version, ref List<Rectangle> blockedModules) { qrCode.ModuleMatrix[4 * version + 9][8] = true; blockedModules.Add(new Rectangle(8, 4 * version + 9, 1, 1)); }
public static void PlaceFinderPatterns(ref QRCodeData qrCode, ref List<Rectangle> blockedModules) { var size = qrCode.ModuleMatrix.Count; int[] locations = { 0, 0, size - 7, 0, 0, size - 7 };
for (var i = 0; i < 6; i = i + 2) { for (var x = 0; x < 7; x++) { for (var y = 0; y < 7; y++) { if (!(((x == 1 || x == 5) && y > 0 && y < 6) || (x > 0 && x < 6 && (y == 1 || y == 5)))) { qrCode.ModuleMatrix[y + locations[i + 1]][x + locations[i]] = true; } } } blockedModules.Add(new Rectangle(locations[i], locations[i + 1], 7, 7)); } }
public static void PlaceAlignmentPatterns(ref QRCodeData qrCode, List<Point> alignmentPatternLocations, ref List<Rectangle> blockedModules) { foreach (var loc in alignmentPatternLocations) { var alignmentPatternRect = new Rectangle(loc.X, loc.Y, 5, 5); var blocked = false; foreach (var blockedRect in blockedModules) { if (Intersects(alignmentPatternRect, blockedRect)) { blocked = true; break; } } if (blocked) continue;
for (var x = 0; x < 5; x++) { for (var y = 0; y < 5; y++) { if (y == 0 || y == 4 || x == 0 || x == 4 || (x == 2 && y == 2)) { qrCode.ModuleMatrix[loc.Y + y][loc.X + x] = true; } } } blockedModules.Add(new Rectangle(loc.X, loc.Y, 5, 5)); } }
public static void PlaceTimingPatterns(ref QRCodeData qrCode, ref List<Rectangle> blockedModules) { var size = qrCode.ModuleMatrix.Count; for (var i = 8; i < size - 8; i++) { if (i % 2 == 0) { qrCode.ModuleMatrix[6][i] = true; qrCode.ModuleMatrix[i][6] = true; } } blockedModules.AddRange(new[]{ new Rectangle(6, 8, 1, size-16), new Rectangle(8, 6, size-16, 1) }); }
private static bool Intersects(Rectangle r1, Rectangle r2) { return r2.X < r1.X + r1.Width && r1.X < r2.X + r2.Width && r2.Y < r1.Y + r1.Height && r1.Y < r2.Y + r2.Height; }
private static bool IsBlocked(Rectangle r1, List<Rectangle> blockedModules) { var isBlocked = false; foreach (var blockedMod in blockedModules) { if (Intersects(blockedMod, r1)) isBlocked = true; } return isBlocked; }
private static class MaskPattern { public static bool Pattern1(int x, int y) { return (x + y) % 2 == 0; }
public static bool Pattern2(int x, int y) { return y % 2 == 0; }
public static bool Pattern3(int x, int y) { return x % 3 == 0; }
public static bool Pattern4(int x, int y) { return (x + y) % 3 == 0; }
public static bool Pattern5(int x, int y) { return ((int)(Math.Floor(y / 2d) + Math.Floor(x / 3d)) % 2) == 0; }
public static bool Pattern6(int x, int y) { return ((x * y) % 2) + ((x * y) % 3) == 0; }
public static bool Pattern7(int x, int y) { return (((x * y) % 2) + ((x * y) % 3)) % 2 == 0; }
public static bool Pattern8(int x, int y) { return (((x + y) % 2) + ((x * y) % 3)) % 2 == 0; }
public static int Score(ref QRCodeData qrCode) { int score1 = 0, score2 = 0, score3 = 0, score4 = 0; var size = qrCode.ModuleMatrix.Count;
//Penalty 1
for (var y = 0; y < size; y++) { var modInRow = 0; var modInColumn = 0; var lastValRow = qrCode.ModuleMatrix[y][0]; var lastValColumn = qrCode.ModuleMatrix[0][y]; for (var x = 0; x < size; x++) { if (qrCode.ModuleMatrix[y][x] == lastValRow) modInRow++; else modInRow = 1; if (modInRow == 5) score1 += 3; else if (modInRow > 5) score1++; lastValRow = qrCode.ModuleMatrix[y][x];
if (qrCode.ModuleMatrix[x][y] == lastValColumn) modInColumn++; else modInColumn = 1; if (modInColumn == 5) score1 += 3; else if (modInColumn > 5) score1++; lastValColumn = qrCode.ModuleMatrix[x][y]; } }
//Penalty 2
for (var y = 0; y < size - 1; y++) { for (var x = 0; x < size - 1; x++) { if (qrCode.ModuleMatrix[y][x] == qrCode.ModuleMatrix[y][x + 1] && qrCode.ModuleMatrix[y][x] == qrCode.ModuleMatrix[y + 1][x] && qrCode.ModuleMatrix[y][x] == qrCode.ModuleMatrix[y + 1][x + 1]) score2 += 3; } }
//Penalty 3
for (var y = 0; y < size; y++) { for (var x = 0; x < size - 10; x++) { if ((qrCode.ModuleMatrix[y][x] && !qrCode.ModuleMatrix[y][x + 1] && qrCode.ModuleMatrix[y][x + 2] && qrCode.ModuleMatrix[y][x + 3] && qrCode.ModuleMatrix[y][x + 4] && !qrCode.ModuleMatrix[y][x + 5] && qrCode.ModuleMatrix[y][x + 6] && !qrCode.ModuleMatrix[y][x + 7] && !qrCode.ModuleMatrix[y][x + 8] && !qrCode.ModuleMatrix[y][x + 9] && !qrCode.ModuleMatrix[y][x + 10]) || (!qrCode.ModuleMatrix[y][x] && !qrCode.ModuleMatrix[y][x + 1] && !qrCode.ModuleMatrix[y][x + 2] && !qrCode.ModuleMatrix[y][x + 3] && qrCode.ModuleMatrix[y][x + 4] && !qrCode.ModuleMatrix[y][x + 5] && qrCode.ModuleMatrix[y][x + 6] && qrCode.ModuleMatrix[y][x + 7] && qrCode.ModuleMatrix[y][x + 8] && !qrCode.ModuleMatrix[y][x + 9] && qrCode.ModuleMatrix[y][x + 10])) { score3 += 40; }
if ((qrCode.ModuleMatrix[x][y] && !qrCode.ModuleMatrix[x + 1][y] && qrCode.ModuleMatrix[x + 2][y] && qrCode.ModuleMatrix[x + 3][y] && qrCode.ModuleMatrix[x + 4][y] && !qrCode.ModuleMatrix[x + 5][y] && qrCode.ModuleMatrix[x + 6][y] && !qrCode.ModuleMatrix[x + 7][y] && !qrCode.ModuleMatrix[x + 8][y] && !qrCode.ModuleMatrix[x + 9][y] && !qrCode.ModuleMatrix[x + 10][y]) || (!qrCode.ModuleMatrix[x][y] && !qrCode.ModuleMatrix[x + 1][y] && !qrCode.ModuleMatrix[x + 2][y] && !qrCode.ModuleMatrix[x + 3][y] && qrCode.ModuleMatrix[x + 4][y] && !qrCode.ModuleMatrix[x + 5][y] && qrCode.ModuleMatrix[x + 6][y] && qrCode.ModuleMatrix[x + 7][y] && qrCode.ModuleMatrix[x + 8][y] && !qrCode.ModuleMatrix[x + 9][y] && qrCode.ModuleMatrix[x + 10][y])) { score3 += 40; } } }
//Penalty 4
double blackModules = 0; foreach (var row in qrCode.ModuleMatrix) foreach (bool bit in row) if (bit) blackModules++;
var percent = (blackModules / (qrCode.ModuleMatrix.Count * qrCode.ModuleMatrix.Count)) * 100; var prevMultipleOf5 = Math.Abs((int)Math.Floor(percent / 5) * 5 - 50) / 5; var nextMultipleOf5 = Math.Abs((int)Math.Floor(percent / 5) * 5 - 45) / 5; score4 = Math.Min(prevMultipleOf5, nextMultipleOf5) * 10;
return score1 + score2 + score3 + score4; } }
}
private List<string> CalculateECCWords(string bitString, ECCInfo eccInfo) { var eccWords = eccInfo.ECCPerBlock; var messagePolynom = this.CalculateMessagePolynom(bitString); var generatorPolynom = this.CalculateGeneratorPolynom(eccWords);
for (var i = 0; i < messagePolynom.PolyItems.Count; i++) messagePolynom.PolyItems[i] = new PolynomItem(messagePolynom.PolyItems[i].Coefficient, messagePolynom.PolyItems[i].Exponent + eccWords);
for (var i = 0; i < generatorPolynom.PolyItems.Count; i++) generatorPolynom.PolyItems[i] = new PolynomItem(generatorPolynom.PolyItems[i].Coefficient, generatorPolynom.PolyItems[i].Exponent + (messagePolynom.PolyItems.Count - 1));
var leadTermSource = messagePolynom; for (var i = 0; (leadTermSource.PolyItems.Count > 0 && leadTermSource.PolyItems[leadTermSource.PolyItems.Count - 1].Exponent > 0); i++) { if (leadTermSource.PolyItems[0].Coefficient == 0) { leadTermSource.PolyItems.RemoveAt(0); leadTermSource.PolyItems.Add(new PolynomItem(0, leadTermSource.PolyItems[leadTermSource.PolyItems.Count - 1].Exponent - 1)); } else { var resPoly = this.MultiplyGeneratorPolynomByLeadterm(generatorPolynom, this.ConvertToAlphaNotation(leadTermSource).PolyItems[0], i); resPoly = this.ConvertToDecNotation(resPoly); resPoly = this.XORPolynoms(leadTermSource, resPoly); leadTermSource = resPoly; } } return leadTermSource.PolyItems.Select(x => DecToBin(x.Coefficient, 8)).List(); }
private Polynom ConvertToAlphaNotation(Polynom poly) { var newPoly = new Polynom(); for (var i = 0; i < poly.PolyItems.Count; i++) newPoly.PolyItems.Add( new PolynomItem( (poly.PolyItems[i].Coefficient != 0 ? this.GetAlphaExpFromIntVal(poly.PolyItems[i].Coefficient) : 0), poly.PolyItems[i].Exponent)); return newPoly; }
private Polynom ConvertToDecNotation(Polynom poly) { var newPoly = new Polynom(); for (var i = 0; i < poly.PolyItems.Count; i++) newPoly.PolyItems.Add(new PolynomItem(this.GetIntValFromAlphaExp(poly.PolyItems[i].Coefficient), poly.PolyItems[i].Exponent)); return newPoly; }
private int GetVersion(int length, EncodingMode encMode, ECCLevel eccLevel) { var version = this.capacityTable.Where( x => x.Details.Count( y => (y.ErrorCorrectionLevel == eccLevel && y.CapacityDict[encMode] >= Convert.ToInt32(length) ) ) > 0 ).Select(x => new { version = x.Version, capacity = x.Details.Single(y => y.ErrorCorrectionLevel == eccLevel) .CapacityDict[encMode] }).Min(x => x.version); return version; }
private EncodingMode GetEncodingFromPlaintext(string plainText, bool forceUtf8) { EncodingMode result = EncodingMode.Numeric; foreach (char c in plainText) { if (forceUtf8 || !Methods.Contains(alphanumEncTable, c)) return EncodingMode.Byte; if (!Methods.Contains(numTable, c)) result = EncodingMode.Alphanumeric; } return result; }
private Polynom CalculateMessagePolynom(string bitString) { var messagePol = new Polynom(); for (var i = bitString.Length / 8 - 1; i >= 0; i--) { messagePol.PolyItems.Add(new PolynomItem(this.BinToDec(bitString.Substring(0, 8)), i)); bitString = bitString.Remove(0, 8); } return messagePol; }
private Polynom CalculateGeneratorPolynom(int numEccWords) { var generatorPolynom = new Polynom(); generatorPolynom.PolyItems.AddRange(new[]{ new PolynomItem(0,1), new PolynomItem(0,0) }); for (var i = 1; i <= numEccWords - 1; i++) { var multiplierPolynom = new Polynom(); multiplierPolynom.PolyItems.AddRange(new[]{ new PolynomItem(0,1), new PolynomItem(i,0) });
generatorPolynom = this.MultiplyAlphaPolynoms(generatorPolynom, multiplierPolynom); }
return generatorPolynom; }
private List<string> BinaryStringToBitBlockList(string bitString) { return new List<char>(bitString.ToCharArray()).Select((x, i) => new { Index = i, Value = x }) .GroupBy(x => x.Index / 8) .Select(x => String.Join("", x.Select(v => v.Value.ToString()).ToArray())) .List(); }
private List<int> BinaryStringListToDecList(List<string> binaryStringList) { // return binaryStringList.Select(binaryString => this.BinToDec(binaryString));
var newList = new List<int>(binaryStringList.Count); for (var i = 0; i < binaryStringList.Count; i++) newList.Add(BinToDec(binaryStringList[i])); return newList; }
private int BinToDec(string binStr) { return Convert.ToInt32(binStr, 2); }
private static string DecToBin(int decNum) { return Convert.ToString(decNum, 2); }
private static string DecToBin(int decNum, int padLeftUpTo) { var binStr = DecToBin(decNum); return binStr.PadLeft(padLeftUpTo, '0'); }
private int GetCountIndicatorLength(int version, EncodingMode encMode) { if (version < 10) { if (encMode.Equals(EncodingMode.Numeric)) return 10; else if (encMode.Equals(EncodingMode.Alphanumeric)) return 9; else return 8; } else if (version < 27) { if (encMode.Equals(EncodingMode.Numeric)) return 12; else if (encMode.Equals(EncodingMode.Alphanumeric)) return 11; else if (encMode.Equals(EncodingMode.Byte)) return 16; else return 10; } else { if (encMode.Equals(EncodingMode.Numeric)) return 14; else if (encMode.Equals(EncodingMode.Alphanumeric)) return 13; else if (encMode.Equals(EncodingMode.Byte)) return 16; else return 12; } }
private int GetDataLength(EncodingMode encoding, string plainText, string codedText, bool forceUtf8) { return forceUtf8 || this.IsUtf8(encoding, plainText) ? (codedText.Length / 8) : plainText.Length; }
private bool IsUtf8(EncodingMode encoding, string plainText) { return (encoding == EncodingMode.Byte && !this.IsValidISO(plainText)); }
private bool IsValidISO(string input) { var bytes = Encoding.GetEncoding("ISO-8859-1").GetBytes(input); //var result = Encoding.GetEncoding("ISO-8859-1").GetString(bytes);
var result = Encoding.GetEncoding("ISO-8859-1").GetString(bytes, 0, bytes.Length); return String.Equals(input, result); }
private string PlainTextToBinary(string plainText, EncodingMode encMode, EciMode eciMode, bool utf8BOM, bool forceUtf8) { switch (encMode) { case EncodingMode.Alphanumeric: return PlainTextToBinaryAlphanumeric(plainText); case EncodingMode.Numeric: return PlainTextToBinaryNumeric(plainText); case EncodingMode.Byte: return PlainTextToBinaryByte(plainText, eciMode, utf8BOM, forceUtf8); case EncodingMode.Kanji: return string.Empty; case EncodingMode.ECI: default: return string.Empty; } }
private string PlainTextToBinaryNumeric(string plainText) { var codeText = string.Empty; while (plainText.Length >= 3) { var dec = Convert.ToInt32(plainText.Substring(0, 3)); codeText += DecToBin(dec, 10); plainText = plainText.Substring(3);
} if (plainText.Length == 2) { var dec = Convert.ToInt32(plainText); codeText += DecToBin(dec, 7); } else if (plainText.Length == 1) { var dec = Convert.ToInt32(plainText); codeText += DecToBin(dec, 4); } return codeText; }
private string PlainTextToBinaryAlphanumeric(string plainText) { var codeText = string.Empty; while (plainText.Length >= 2) { var token = plainText.Substring(0, 2); var dec = this.alphanumEncDict[token[0]] * 45 + this.alphanumEncDict[token[1]]; codeText += DecToBin(dec, 11); plainText = plainText.Substring(2);
} if (plainText.Length > 0) { codeText += DecToBin(this.alphanumEncDict[plainText[0]], 6); } return codeText; }
private string PlainTextToBinaryECI(string plainText) { var codeText = string.Empty; byte[] _bytes = Encoding.GetEncoding("ascii").GetBytes(plainText); foreach (byte _byte in _bytes) { codeText += DecToBin(_byte, 8); } return codeText; }
private string ConvertToIso8859(string value, string Iso = "ISO-8859-2") { Encoding iso = Encoding.GetEncoding(Iso); Encoding utf8 = Encoding.UTF8; byte[] utfBytes = utf8.GetBytes(value); byte[] isoBytes = Encoding.Convert(utf8, iso, utfBytes);#if !PCL
return iso.GetString(isoBytes);#else
return iso.GetString(isoBytes, 0, isoBytes.Length);#endif
}
private string PlainTextToBinaryByte(string plainText, EciMode eciMode, bool utf8BOM, bool forceUtf8) { byte[] codeBytes; var codeText = string.Empty;
if (this.IsValidISO(plainText) && !forceUtf8) codeBytes = Encoding.GetEncoding("ISO-8859-1").GetBytes(plainText); else { switch (eciMode) { case EciMode.Iso8859_1: codeBytes = Encoding.GetEncoding("ISO-8859-1").GetBytes(ConvertToIso8859(plainText, "ISO-8859-1")); break; case EciMode.Iso8859_2: codeBytes = Encoding.GetEncoding("ISO-8859-2").GetBytes(ConvertToIso8859(plainText, "ISO-8859-2")); break; case EciMode.Default: case EciMode.Utf8: default: codeBytes = utf8BOM ? Encoding.UTF8.GetPreamble().Concat(Encoding.UTF8.GetBytes(plainText)).ToArray() : Encoding.UTF8.GetBytes(plainText); break; } }
foreach (var b in codeBytes) codeText += DecToBin(b, 8);
return codeText; }
private Polynom XORPolynoms(Polynom messagePolynom, Polynom resPolynom) { var resultPolynom = new Polynom(); Polynom longPoly, shortPoly; if (messagePolynom.PolyItems.Count >= resPolynom.PolyItems.Count) { longPoly = messagePolynom; shortPoly = resPolynom; } else { longPoly = resPolynom; shortPoly = messagePolynom; }
for (var i = 0; i < longPoly.PolyItems.Count; i++) { var polItemRes = new PolynomItem (
longPoly.PolyItems[i].Coefficient ^ (shortPoly.PolyItems.Count > i ? shortPoly.PolyItems[i].Coefficient : 0), messagePolynom.PolyItems[0].Exponent - i ); resultPolynom.PolyItems.Add(polItemRes); } resultPolynom.PolyItems.RemoveAt(0); return resultPolynom; }
private Polynom MultiplyGeneratorPolynomByLeadterm(Polynom genPolynom, PolynomItem leadTerm, int lowerExponentBy) { var resultPolynom = new Polynom(); foreach (var polItemBase in genPolynom.PolyItems) { var polItemRes = new PolynomItem(
(polItemBase.Coefficient + leadTerm.Coefficient) % 255, polItemBase.Exponent - lowerExponentBy ); resultPolynom.PolyItems.Add(polItemRes); } return resultPolynom; }
private Polynom MultiplyAlphaPolynoms(Polynom polynomBase, Polynom polynomMultiplier) { var resultPolynom = new Polynom(); foreach (var polItemBase in polynomMultiplier.PolyItems) { foreach (var polItemMulti in polynomBase.PolyItems) { var polItemRes = new PolynomItem ( ShrinkAlphaExp(polItemBase.Coefficient + polItemMulti.Coefficient), (polItemBase.Exponent + polItemMulti.Exponent) ); resultPolynom.PolyItems.Add(polItemRes); } } var exponentsToGlue = resultPolynom.PolyItems.GroupBy(x => x.Exponent).Where(x => x.Count() > 1).Select(x => x.First().Exponent); var gluedPolynoms = new List<PolynomItem>(); var toGlue = exponentsToGlue as IList<int> ?? exponentsToGlue.List(); foreach (var exponent in toGlue) { var coefficient = resultPolynom.PolyItems.Where(x => x.Exponent == exponent).Aggregate(0, (current, polynomOld) => current ^ this.GetIntValFromAlphaExp(polynomOld.Coefficient)); var polynomFixed = new PolynomItem(this.GetAlphaExpFromIntVal(coefficient), exponent); gluedPolynoms.Add(polynomFixed); } resultPolynom.PolyItems.RemoveAll(x => toGlue.Contains(x.Exponent)); resultPolynom.PolyItems.AddRange(gluedPolynoms); resultPolynom.PolyItems = resultPolynom.PolyItems.OrderByDescending(x => x.Exponent).List(); return resultPolynom; }
private int GetIntValFromAlphaExp(int exp) { return this.galoisField.Where(alog => alog.ExponentAlpha == exp).Select(alog => alog.IntegerValue).First(); }
private int GetAlphaExpFromIntVal(int intVal) { return this.galoisField.Where(alog => alog.IntegerValue == intVal).Select(alog => alog.ExponentAlpha).First(); }
private static int ShrinkAlphaExp(int alphaExp) { // ReSharper disable once PossibleLossOfFraction
return (int)((alphaExp % 256) + Math.Floor((double)(alphaExp / 256))); }
private void CreateAlphanumEncDict() { this.alphanumEncDict = new Dictionary<char, int>(); for (int i = 0; i < alphanumEncTable.Length; i++) this.alphanumEncDict.Add(alphanumEncTable[i], i); }
private void CreateAlignmentPatternTable() { this.alignmentPatternTable = new List<AlignmentPattern>();
for (var i = 0; i < (7 * 40); i = i + 7) { var points = new List<Point>(); for (var x = 0; x < 7; x++) { if (this.alignmentPatternBaseValues[i + x] != 0) { for (var y = 0; y < 7; y++) { if (this.alignmentPatternBaseValues[i + y] != 0) { var p = new Point(this.alignmentPatternBaseValues[i + x] - 2, this.alignmentPatternBaseValues[i + y] - 2); if (!points.Contains(p)) points.Add(p); } } } }
this.alignmentPatternTable.Add(new AlignmentPattern() { Version = (i + 7) / 7, PatternPositions = points } ); } }
private void CreateCapacityECCTable() { this.capacityECCTable = new List<ECCInfo>(); for (var i = 0; i < (4 * 6 * 40); i = i + (4 * 6)) { this.capacityECCTable.AddRange( new[] { new ECCInfo( (i+24) / 24, ECCLevel.L, this.capacityECCBaseValues[i], this.capacityECCBaseValues[i+1], this.capacityECCBaseValues[i+2], this.capacityECCBaseValues[i+3], this.capacityECCBaseValues[i+4], this.capacityECCBaseValues[i+5]), new ECCInfo ( version: (i + 24) / 24, errorCorrectionLevel: ECCLevel.M, totalDataCodewords: this.capacityECCBaseValues[i+6], eccPerBlock: this.capacityECCBaseValues[i+7], blocksInGroup1: this.capacityECCBaseValues[i+8], codewordsInGroup1: this.capacityECCBaseValues[i+9], blocksInGroup2: this.capacityECCBaseValues[i+10], codewordsInGroup2: this.capacityECCBaseValues[i+11] ), new ECCInfo ( version: (i + 24) / 24, errorCorrectionLevel: ECCLevel.Q, totalDataCodewords: this.capacityECCBaseValues[i+12], eccPerBlock: this.capacityECCBaseValues[i+13], blocksInGroup1: this.capacityECCBaseValues[i+14], codewordsInGroup1: this.capacityECCBaseValues[i+15], blocksInGroup2: this.capacityECCBaseValues[i+16], codewordsInGroup2: this.capacityECCBaseValues[i+17] ), new ECCInfo ( version: (i + 24) / 24, errorCorrectionLevel: ECCLevel.H, totalDataCodewords: this.capacityECCBaseValues[i+18], eccPerBlock: this.capacityECCBaseValues[i+19], blocksInGroup1: this.capacityECCBaseValues[i+20], codewordsInGroup1: this.capacityECCBaseValues[i+21], blocksInGroup2: this.capacityECCBaseValues[i+22], codewordsInGroup2: this.capacityECCBaseValues[i+23] ) }); } }
private void CreateCapacityTable() { this.capacityTable = new List<VersionInfo>(); for (var i = 0; i < (16 * 40); i = i + 16) { this.capacityTable.Add(new VersionInfo(
(i + 16) / 16, new List<VersionInfoDetails> { new VersionInfoDetails( ECCLevel.L, new Dictionary<EncodingMode,int>(){ { EncodingMode.Numeric, this.capacityBaseValues[i] }, { EncodingMode.Alphanumeric, this.capacityBaseValues[i+1] }, { EncodingMode.Byte, this.capacityBaseValues[i+2] }, { EncodingMode.Kanji, this.capacityBaseValues[i+3] }, } ), new VersionInfoDetails( ECCLevel.M, new Dictionary<EncodingMode,int>(){ { EncodingMode.Numeric, this.capacityBaseValues[i+4] }, { EncodingMode.Alphanumeric, this.capacityBaseValues[i+5] }, { EncodingMode.Byte, this.capacityBaseValues[i+6] }, { EncodingMode.Kanji, this.capacityBaseValues[i+7] }, } ), new VersionInfoDetails( ECCLevel.Q, new Dictionary<EncodingMode,int>(){ { EncodingMode.Numeric, this.capacityBaseValues[i+8] }, { EncodingMode.Alphanumeric, this.capacityBaseValues[i+9] }, { EncodingMode.Byte, this.capacityBaseValues[i+10] }, { EncodingMode.Kanji, this.capacityBaseValues[i+11] }, } ), new VersionInfoDetails( ECCLevel.H, new Dictionary<EncodingMode,int>(){ { EncodingMode.Numeric, this.capacityBaseValues[i+12] }, { EncodingMode.Alphanumeric, this.capacityBaseValues[i+13] }, { EncodingMode.Byte, this.capacityBaseValues[i+14] }, { EncodingMode.Kanji, this.capacityBaseValues[i+15] }, } ) } )); } }
private void CreateAntilogTable() { this.galoisField = new List<Antilog>();
int gfItem = 1; for (var i = 0; i < 256; i++) { this.galoisField.Add(new Antilog(i, gfItem)); gfItem *= 2; if (gfItem > 255) gfItem ^= 285; } }
/// <summary>
/// Error correction level. These define the tolerance levels for how much of the code can be lost before the code cannot be recovered.
/// </summary>
public enum ECCLevel { /// <summary>
/// 7% may be lost before recovery is not possible
/// </summary>
L, /// <summary>
/// 15% may be lost before recovery is not possible
/// </summary>
M, /// <summary>
/// 25% may be lost before recovery is not possible
/// </summary>
Q, /// <summary>
/// 30% may be lost before recovery is not possible
/// </summary>
H }
private enum EncodingMode { Numeric = 1, Alphanumeric = 2, Byte = 4, Kanji = 8, ECI = 7 }
private struct AlignmentPattern { public int Version; public List<Point> PatternPositions; }
private struct CodewordBlock { public CodewordBlock(int groupNumber, int blockNumber, string bitString, List<string> codeWords, List<string> eccWords, List<int> codeWordsInt, List<int> eccWordsInt) { this.GroupNumber = groupNumber; this.BlockNumber = blockNumber; this.BitString = bitString; this.CodeWords = codeWords; this.ECCWords = eccWords; this.CodeWordsInt = codeWordsInt; this.ECCWordsInt = eccWordsInt; }
public int GroupNumber { get; } public int BlockNumber { get; } public string BitString { get; } public List<string> CodeWords { get; } public List<int> CodeWordsInt { get; } public List<string> ECCWords { get; } public List<int> ECCWordsInt { get; } }
private struct ECCInfo { public ECCInfo(int version, ECCLevel errorCorrectionLevel, int totalDataCodewords, int eccPerBlock, int blocksInGroup1, int codewordsInGroup1, int blocksInGroup2, int codewordsInGroup2) { this.Version = version; this.ErrorCorrectionLevel = errorCorrectionLevel; this.TotalDataCodewords = totalDataCodewords; this.ECCPerBlock = eccPerBlock; this.BlocksInGroup1 = blocksInGroup1; this.CodewordsInGroup1 = codewordsInGroup1; this.BlocksInGroup2 = blocksInGroup2; this.CodewordsInGroup2 = codewordsInGroup2; } public int Version { get; } public ECCLevel ErrorCorrectionLevel { get; } public int TotalDataCodewords { get; } public int ECCPerBlock { get; } public int BlocksInGroup1 { get; } public int CodewordsInGroup1 { get; } public int BlocksInGroup2 { get; } public int CodewordsInGroup2 { get; } }
private struct VersionInfo { public VersionInfo(int version, List<VersionInfoDetails> versionInfoDetails) { this.Version = version; this.Details = versionInfoDetails; } public int Version { get; } public List<VersionInfoDetails> Details { get; } }
private struct VersionInfoDetails { public VersionInfoDetails(ECCLevel errorCorrectionLevel, Dictionary<EncodingMode, int> capacityDict) { this.ErrorCorrectionLevel = errorCorrectionLevel; this.CapacityDict = capacityDict; }
public ECCLevel ErrorCorrectionLevel { get; } public Dictionary<EncodingMode, int> CapacityDict { get; } }
private struct Antilog { public Antilog(int exponentAlpha, int integerValue) { this.ExponentAlpha = exponentAlpha; this.IntegerValue = integerValue; } public int ExponentAlpha { get; } public int IntegerValue { get; } }
private struct PolynomItem { public PolynomItem(int coefficient, int exponent) { this.Coefficient = coefficient; this.Exponent = exponent; }
public int Coefficient { get; } public int Exponent { get; } }
private class Polynom { public Polynom() { this.PolyItems = new List<PolynomItem>(); }
public List<PolynomItem> PolyItems { get; set; }
public override string ToString() { var sb = new StringBuilder(); //this.PolyItems.ForEach(x => sb.Append("a^" + x.Coefficient + "*x^" + x.Exponent + " + "));
foreach (var polyItem in this.PolyItems) { sb.Append("a^" + polyItem.Coefficient + "*x^" + polyItem.Exponent + " + "); }
return sb.ToString().TrimEnd(new[] { ' ', '+' }); } }
private class Point { public int X { get; } public int Y { get; } public Point(int x, int y) { this.X = x; this.Y = y; } }
private class Rectangle { public int X { get; } public int Y { get; } public int Width { get; } public int Height { get; }
public Rectangle(int x, int y, int w, int h) { this.X = x; this.Y = y; this.Width = w; this.Height = h; } }
public void Dispose() { this.alignmentPatternBaseValues = null; this.alignmentPatternTable = null; this.alphanumEncDict = null; this.capacityBaseValues = null; this.capacityECCBaseValues = null; this.capacityECCTable = null; this.capacityTable = null; this.galoisField = null; this.remainderBits = null; } }}
#endif
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