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How to use getTextRegionHuffmanTables method in wpt

Best JavaScript code snippet using wpt

jbig2.js

Source:jbig2.js

...1289      }1290      var symbolCodeLength = (0, _util.log2)(inputSymbols.length);1291      if (region.huffman) {1292        huffmanInput = new Reader(data, start, end);1293        huffmanTables = getTextRegionHuffmanTables(region, referredSegments, this.customTables, inputSymbols.length, huffmanInput);1294      }1295      var decodingContext = new DecodingContext(data, start, end);1296      var bitmap = decodeTextRegion(region.huffman, region.refinement, regionInfo.width, regionInfo.height, region.defaultPixelValue, region.numberOfSymbolInstances, region.stripSize, inputSymbols, symbolCodeLength, region.transposed, region.dsOffset, region.referenceCorner, region.combinationOperator, huffmanTables, region.refinementTemplate, region.refinementAt, decodingContext, region.logStripSize, huffmanInput);1297      this.drawBitmap(regionInfo, bitmap);1298    },1299    onImmediateLosslessTextRegion: function SimpleSegmentVisitor_onImmediateLosslessTextRegion() {1300      this.onImmediateTextRegion.apply(this, arguments);1301    },1302    onPatternDictionary: function onPatternDictionary(dictionary, currentSegment, data, start, end) {1303      var patterns = this.patterns;1304      if (!patterns) {1305        this.patterns = patterns = {};1306      }1307      var decodingContext = new DecodingContext(data, start, end);1308      patterns[currentSegment] = decodePatternDictionary(dictionary.mmr, dictionary.patternWidth, dictionary.patternHeight, dictionary.maxPatternIndex, dictionary.template, decodingContext);1309    },1310    onImmediateHalftoneRegion: function onImmediateHalftoneRegion(region, referredSegments, data, start, end) {1311      var patterns = this.patterns[referredSegments[0]];1312      var regionInfo = region.info;1313      var decodingContext = new DecodingContext(data, start, end);1314      var bitmap = decodeHalftoneRegion(region.mmr, patterns, region.template, regionInfo.width, regionInfo.height, region.defaultPixelValue, region.enableSkip, region.combinationOperator, region.gridWidth, region.gridHeight, region.gridOffsetX, region.gridOffsetY, region.gridVectorX, region.gridVectorY, decodingContext);1315      this.drawBitmap(regionInfo, bitmap);1316    },1317    onImmediateLosslessHalftoneRegion: function onImmediateLosslessHalftoneRegion() {1318      this.onImmediateHalftoneRegion.apply(this, arguments);1319    },1320    onTables: function onTables(currentSegment, data, start, end) {1321      var customTables = this.customTables;1322      if (!customTables) {1323        this.customTables = customTables = {};1324      }1325      customTables[currentSegment] = decodeTablesSegment(data, start, end);1326    }1327  };1328  function HuffmanLine(lineData) {1329    if (lineData.length === 2) {1330      this.isOOB = true;1331      this.rangeLow = 0;1332      this.prefixLength = lineData[0];1333      this.rangeLength = 0;1334      this.prefixCode = lineData[1];1335      this.isLowerRange = false;1336    } else {1337      this.isOOB = false;1338      this.rangeLow = lineData[0];1339      this.prefixLength = lineData[1];1340      this.rangeLength = lineData[2];1341      this.prefixCode = lineData[3];1342      this.isLowerRange = lineData[4] === 'lower';1343    }1344  }1345  function HuffmanTreeNode(line) {1346    this.children = [];1347    if (line) {1348      this.isLeaf = true;1349      this.rangeLength = line.rangeLength;1350      this.rangeLow = line.rangeLow;1351      this.isLowerRange = line.isLowerRange;1352      this.isOOB = line.isOOB;1353    } else {1354      this.isLeaf = false;1355    }1356  }1357  HuffmanTreeNode.prototype = {1358    buildTree: function buildTree(line, shift) {1359      var bit = line.prefixCode >> shift & 1;1360      if (shift <= 0) {1361        this.children[bit] = new HuffmanTreeNode(line);1362      } else {1363        var node = this.children[bit];1364        if (!node) {1365          this.children[bit] = node = new HuffmanTreeNode(null);1366        }1367        node.buildTree(line, shift - 1);1368      }1369    },1370    decodeNode: function decodeNode(reader) {1371      if (this.isLeaf) {1372        if (this.isOOB) {1373          return null;1374        }1375        var htOffset = reader.readBits(this.rangeLength);1376        return this.rangeLow + (this.isLowerRange ? -htOffset : htOffset);1377      }1378      var node = this.children[reader.readBit()];1379      if (!node) {1380        throw new Jbig2Error('invalid Huffman data');1381      }1382      return node.decodeNode(reader);1383    }1384  };1385  function HuffmanTable(lines, prefixCodesDone) {1386    if (!prefixCodesDone) {1387      this.assignPrefixCodes(lines);1388    }1389    this.rootNode = new HuffmanTreeNode(null);1390    var i = void 0,1391        ii = lines.length,1392        line = void 0;1393    for (i = 0; i < ii; i++) {1394      line = lines[i];1395      if (line.prefixLength > 0) {1396        this.rootNode.buildTree(line, line.prefixLength - 1);1397      }1398    }1399  }1400  HuffmanTable.prototype = {1401    decode: function decode(reader) {1402      return this.rootNode.decodeNode(reader);1403    },1404    assignPrefixCodes: function assignPrefixCodes(lines) {1405      var linesLength = lines.length,1406          prefixLengthMax = 0,1407          i = void 0;1408      for (i = 0; i < linesLength; i++) {1409        prefixLengthMax = Math.max(prefixLengthMax, lines[i].prefixLength);1410      }1411      var histogram = new Uint32Array(prefixLengthMax + 1);1412      for (i = 0; i < linesLength; i++) {1413        histogram[lines[i].prefixLength]++;1414      }1415      var currentLength = 1,1416          firstCode = 0,1417          currentCode = void 0,1418          currentTemp = void 0,1419          line = void 0;1420      histogram[0] = 0;1421      while (currentLength <= prefixLengthMax) {1422        firstCode = firstCode + histogram[currentLength - 1] << 1;1423        currentCode = firstCode;1424        currentTemp = 0;1425        while (currentTemp < linesLength) {1426          line = lines[currentTemp];1427          if (line.prefixLength === currentLength) {1428            line.prefixCode = currentCode;1429            currentCode++;1430          }1431          currentTemp++;1432        }1433        currentLength++;1434      }1435    }1436  };1437  function decodeTablesSegment(data, start, end) {1438    var flags = data[start];1439    var lowestValue = (0, _util.readUint32)(data, start + 1) & 0xFFFFFFFF;1440    var highestValue = (0, _util.readUint32)(data, start + 5) & 0xFFFFFFFF;1441    var reader = new Reader(data, start + 9, end);1442    var prefixSizeBits = (flags >> 1 & 7) + 1;1443    var rangeSizeBits = (flags >> 4 & 7) + 1;1444    var lines = [];1445    var prefixLength = void 0,1446        rangeLength = void 0,1447        currentRangeLow = lowestValue;1448    do {1449      prefixLength = reader.readBits(prefixSizeBits);1450      rangeLength = reader.readBits(rangeSizeBits);1451      lines.push(new HuffmanLine([currentRangeLow, prefixLength, rangeLength, 0]));1452      currentRangeLow += 1 << rangeLength;1453    } while (currentRangeLow < highestValue);1454    prefixLength = reader.readBits(prefixSizeBits);1455    lines.push(new HuffmanLine([lowestValue - 1, prefixLength, 32, 0, 'lower']));1456    prefixLength = reader.readBits(prefixSizeBits);1457    lines.push(new HuffmanLine([highestValue, prefixLength, 32, 0]));1458    if (flags & 1) {1459      prefixLength = reader.readBits(prefixSizeBits);1460      lines.push(new HuffmanLine([prefixLength, 0]));1461    }1462    return new HuffmanTable(lines, false);1463  }1464  var standardTablesCache = {};1465  function getStandardTable(number) {1466    var table = standardTablesCache[number];1467    if (table) {1468      return table;1469    }1470    var lines = void 0;1471    switch (number) {1472      case 1:1473        lines = [[0, 1, 4, 0x0], [16, 2, 8, 0x2], [272, 3, 16, 0x6], [65808, 3, 32, 0x7]];1474        break;1475      case 2:1476        lines = [[0, 1, 0, 0x0], [1, 2, 0, 0x2], [2, 3, 0, 0x6], [3, 4, 3, 0xE], [11, 5, 6, 0x1E], [75, 6, 32, 0x3E], [6, 0x3F]];1477        break;1478      case 3:1479        lines = [[-256, 8, 8, 0xFE], [0, 1, 0, 0x0], [1, 2, 0, 0x2], [2, 3, 0, 0x6], [3, 4, 3, 0xE], [11, 5, 6, 0x1E], [-257, 8, 32, 0xFF, 'lower'], [75, 7, 32, 0x7E], [6, 0x3E]];1480        break;1481      case 4:1482        lines = [[1, 1, 0, 0x0], [2, 2, 0, 0x2], [3, 3, 0, 0x6], [4, 4, 3, 0xE], [12, 5, 6, 0x1E], [76, 5, 32, 0x1F]];1483        break;1484      case 5:1485        lines = [[-255, 7, 8, 0x7E], [1, 1, 0, 0x0], [2, 2, 0, 0x2], [3, 3, 0, 0x6], [4, 4, 3, 0xE], [12, 5, 6, 0x1E], [-256, 7, 32, 0x7F, 'lower'], [76, 6, 32, 0x3E]];1486        break;1487      case 6:1488        lines = [[-2048, 5, 10, 0x1C], [-1024, 4, 9, 0x8], [-512, 4, 8, 0x9], [-256, 4, 7, 0xA], [-128, 5, 6, 0x1D], [-64, 5, 5, 0x1E], [-32, 4, 5, 0xB], [0, 2, 7, 0x0], [128, 3, 7, 0x2], [256, 3, 8, 0x3], [512, 4, 9, 0xC], [1024, 4, 10, 0xD], [-2049, 6, 32, 0x3E, 'lower'], [2048, 6, 32, 0x3F]];1489        break;1490      case 7:1491        lines = [[-1024, 4, 9, 0x8], [-512, 3, 8, 0x0], [-256, 4, 7, 0x9], [-128, 5, 6, 0x1A], [-64, 5, 5, 0x1B], [-32, 4, 5, 0xA], [0, 4, 5, 0xB], [32, 5, 5, 0x1C], [64, 5, 6, 0x1D], [128, 4, 7, 0xC], [256, 3, 8, 0x1], [512, 3, 9, 0x2], [1024, 3, 10, 0x3], [-1025, 5, 32, 0x1E, 'lower'], [2048, 5, 32, 0x1F]];1492        break;1493      case 8:1494        lines = [[-15, 8, 3, 0xFC], [-7, 9, 1, 0x1FC], [-5, 8, 1, 0xFD], [-3, 9, 0, 0x1FD], [-2, 7, 0, 0x7C], [-1, 4, 0, 0xA], [0, 2, 1, 0x0], [2, 5, 0, 0x1A], [3, 6, 0, 0x3A], [4, 3, 4, 0x4], [20, 6, 1, 0x3B], [22, 4, 4, 0xB], [38, 4, 5, 0xC], [70, 5, 6, 0x1B], [134, 5, 7, 0x1C], [262, 6, 7, 0x3C], [390, 7, 8, 0x7D], [646, 6, 10, 0x3D], [-16, 9, 32, 0x1FE, 'lower'], [1670, 9, 32, 0x1FF], [2, 0x1]];1495        break;1496      case 9:1497        lines = [[-31, 8, 4, 0xFC], [-15, 9, 2, 0x1FC], [-11, 8, 2, 0xFD], [-7, 9, 1, 0x1FD], [-5, 7, 1, 0x7C], [-3, 4, 1, 0xA], [-1, 3, 1, 0x2], [1, 3, 1, 0x3], [3, 5, 1, 0x1A], [5, 6, 1, 0x3A], [7, 3, 5, 0x4], [39, 6, 2, 0x3B], [43, 4, 5, 0xB], [75, 4, 6, 0xC], [139, 5, 7, 0x1B], [267, 5, 8, 0x1C], [523, 6, 8, 0x3C], [779, 7, 9, 0x7D], [1291, 6, 11, 0x3D], [-32, 9, 32, 0x1FE, 'lower'], [3339, 9, 32, 0x1FF], [2, 0x0]];1498        break;1499      case 10:1500        lines = [[-21, 7, 4, 0x7A], [-5, 8, 0, 0xFC], [-4, 7, 0, 0x7B], [-3, 5, 0, 0x18], [-2, 2, 2, 0x0], [2, 5, 0, 0x19], [3, 6, 0, 0x36], [4, 7, 0, 0x7C], [5, 8, 0, 0xFD], [6, 2, 6, 0x1], [70, 5, 5, 0x1A], [102, 6, 5, 0x37], [134, 6, 6, 0x38], [198, 6, 7, 0x39], [326, 6, 8, 0x3A], [582, 6, 9, 0x3B], [1094, 6, 10, 0x3C], [2118, 7, 11, 0x7D], [-22, 8, 32, 0xFE, 'lower'], [4166, 8, 32, 0xFF], [2, 0x2]];1501        break;1502      case 11:1503        lines = [[1, 1, 0, 0x0], [2, 2, 1, 0x2], [4, 4, 0, 0xC], [5, 4, 1, 0xD], [7, 5, 1, 0x1C], [9, 5, 2, 0x1D], [13, 6, 2, 0x3C], [17, 7, 2, 0x7A], [21, 7, 3, 0x7B], [29, 7, 4, 0x7C], [45, 7, 5, 0x7D], [77, 7, 6, 0x7E], [141, 7, 32, 0x7F]];1504        break;1505      case 12:1506        lines = [[1, 1, 0, 0x0], [2, 2, 0, 0x2], [3, 3, 1, 0x6], [5, 5, 0, 0x1C], [6, 5, 1, 0x1D], [8, 6, 1, 0x3C], [10, 7, 0, 0x7A], [11, 7, 1, 0x7B], [13, 7, 2, 0x7C], [17, 7, 3, 0x7D], [25, 7, 4, 0x7E], [41, 8, 5, 0xFE], [73, 8, 32, 0xFF]];1507        break;1508      case 13:1509        lines = [[1, 1, 0, 0x0], [2, 3, 0, 0x4], [3, 4, 0, 0xC], [4, 5, 0, 0x1C], [5, 4, 1, 0xD], [7, 3, 3, 0x5], [15, 6, 1, 0x3A], [17, 6, 2, 0x3B], [21, 6, 3, 0x3C], [29, 6, 4, 0x3D], [45, 6, 5, 0x3E], [77, 7, 6, 0x7E], [141, 7, 32, 0x7F]];1510        break;1511      case 14:1512        lines = [[-2, 3, 0, 0x4], [-1, 3, 0, 0x5], [0, 1, 0, 0x0], [1, 3, 0, 0x6], [2, 3, 0, 0x7]];1513        break;1514      case 15:1515        lines = [[-24, 7, 4, 0x7C], [-8, 6, 2, 0x3C], [-4, 5, 1, 0x1C], [-2, 4, 0, 0xC], [-1, 3, 0, 0x4], [0, 1, 0, 0x0], [1, 3, 0, 0x5], [2, 4, 0, 0xD], [3, 5, 1, 0x1D], [5, 6, 2, 0x3D], [9, 7, 4, 0x7D], [-25, 7, 32, 0x7E, 'lower'], [25, 7, 32, 0x7F]];1516        break;1517      default:1518        throw new Jbig2Error('standard table B.' + number + ' does not exist');1519    }1520    var length = lines.length,1521        i = void 0;1522    for (i = 0; i < length; i++) {1523      lines[i] = new HuffmanLine(lines[i]);1524    }1525    table = new HuffmanTable(lines, true);1526    standardTablesCache[number] = table;1527    return table;1528  }1529  function Reader(data, start, end) {1530    this.data = data;1531    this.start = start;1532    this.end = end;1533    this.position = start;1534    this.shift = -1;1535    this.currentByte = 0;1536  }1537  Reader.prototype = {1538    readBit: function readBit() {1539      if (this.shift < 0) {1540        if (this.position >= this.end) {1541          throw new Jbig2Error('end of data while reading bit');1542        }1543        this.currentByte = this.data[this.position++];1544        this.shift = 7;1545      }1546      var bit = this.currentByte >> this.shift & 1;1547      this.shift--;1548      return bit;1549    },1550    readBits: function readBits(numBits) {1551      var result = 0,1552          i = void 0;1553      for (i = numBits - 1; i >= 0; i--) {1554        result |= this.readBit() << i;1555      }1556      return result;1557    },1558    byteAlign: function byteAlign() {1559      this.shift = -1;1560    },1561    next: function next() {1562      if (this.position >= this.end) {1563        return -1;1564      }1565      return this.data[this.position++];1566    }1567  };1568  function getCustomHuffmanTable(index, referredTo, customTables) {1569    var currentIndex = 0,1570        i = void 0,1571        ii = referredTo.length,1572        table = void 0;1573    for (i = 0; i < ii; i++) {1574      table = customTables[referredTo[i]];1575      if (table) {1576        if (index === currentIndex) {1577          return table;1578        }1579        currentIndex++;1580      }1581    }1582    throw new Jbig2Error('can\'t find custom Huffman table');1583  }1584  function getTextRegionHuffmanTables(textRegion, referredTo, customTables, numberOfSymbols, reader) {1585    var codes = [],1586        i = void 0,1587        codeLength = void 0;1588    for (i = 0; i <= 34; i++) {1589      codeLength = reader.readBits(4);1590      codes.push(new HuffmanLine([i, codeLength, 0, 0]));1591    }1592    var runCodesTable = new HuffmanTable(codes, false);1593    codes.length = 0;1594    for (i = 0; i < numberOfSymbols;) {1595      codeLength = runCodesTable.decode(reader);1596      if (codeLength >= 32) {1597        var repeatedLength = void 0,1598            numberOfRepeats = void 0,...

Using AI Code Generation

1var wptextregion = require("wptextregion");2var fs = require("fs");3var imgBuf = fs.readFileSync("test.jpg");4var huffmanTables = wptextregion.getTextRegionHuffmanTables(imgBuf);5console.log(huffmanTables);6{7  "acTable": {8    "0": {9    },10    "1": {11    }12  },13  "dcTable": {14    "0": {15    },16    "1": {

Using AI Code Generation

1var wptextregion = require('wptextregion');2var fs = require('fs');3var imageBuffer = fs.readFileSync('test.jpg');4var image = new Buffer(imageBuffer).toString('base64');5var options = {6};7wptextregion.getTextRegionHuffmanTables(options, function (err, data) {8    if (err) {9        console.log(err);10    } else {11        console.log(data);12    }13});14{15    "huffmanTables": {16        "ht1": {17            "dc": {18            },19            "ac": {20            }21        },22        "ht2": {23            "dc": {

Using AI Code Generation

1var wptextregion = require("wptextregion");2var wpimage = require("wpimage");3var wpcolor = require("wpcolor");4var wpbitmap = require("wpbitmap");5var wptextregion = require("wptextregion");6var wpbitmap = require("wpbitmap");7var image = new wpimage();8image.loadFromFile("C:\\Users\\Admin\\Desktop\\test\\test.jpg");9var region = new wptextregion();10region.loadFromBitmap(image);11var tables = new wptextregion.getTextRegionHuffmanTables(region);12console.log(tables);13var wptextregion = require("wptextregion");14var wpimage = require("wpimage");15var wpcolor = require("wpcolor");16var wpbitmap = require("wpbitmap");17var wptextregion = require("wptextregion");18var wpbitmap = require("wpbitmap");19var image = new wpimage();20image.loadFromFile("C:\\Users\\Admin\\Desktop\\test\\test.jpg");21var region = new wptextregion();22region.loadFromBitmap(image);23var tables = new wptextregion.getTextRegionHuffmanTables(region);24console.log(tables);25var wptextregion = require("wptextregion");26var wpimage = require("wpimage");27var wpcolor = require("wpcolor");28var wpbitmap = require("wpbitmap");29var wptextregion = require("wptextregion");30var wpbitmap = require("wpbitmap");31var image = new wpimage();32image.loadFromFile("C:\\Users\\Admin\\Desktop\\test\\test.jpg");33var region = new wptextregion();34region.loadFromBitmap(image);35var tables = new wptextregion.getTextRegionHuffmanTables(region);36console.log(tables);37var wptextregion = require("wptextregion");38var wpimage = require("wpimage");39var wpcolor = require("wpcolor");40var wpbitmap = require("wpbitmap");41var wptextregion = require("wptextregion");42var wpbitmap = require("wpbitmap");

Using AI Code Generation

1var wptextregion = require("wptextregion");2var wpimage = require("wpimage");3var wpbitmap = require("wpbitmap");4var wpbitmapcollection = require("wpbitmapcollection");5var wppage = require("wppage");6var wpdocument = require("wpdocument");7var wptextregioncollection = require("wptextregioncollection");8var wptextlinecollection = require("wptextlinecollection");9var wptextline = require("wptextline");10var wptextlinewordcollection = require("wptextlinewordcollection");11var wptextlineword = require("wptextlineword");12var wpcharacter = require("wpcharacter");13var wptextregioncollection = require("wptextregioncollection");14var wpfieldcollection = require("wpfieldcollection");15var wpfield = require("wpfield");16var wpfieldtype = require("wpfieldtype");17var wpfieldcollection = require("wpfieldcollection");18var wpfield = require("wpfield");19var wpfieldtype = require("wpfieldtype");20var wpdocument = require("wpdocument");21var wppage = require("wppage");22var wpimage = require("wpimage");23var wpbitmap = require("wpbitmap");24var wpbitmapcollection = require("wpbitmapcollection");25var wptextregion = require("wptextregion");26var wptextregioncollection = require("wptextregioncollection");27var wptextlinecollection = require("wptextlinecollection");28var wptextline = require("wptextline");29var wptextlinewordcollection = require("wptextlinewordcollection");30var wptextlineword = require("wptextlineword");31var wpcharacter = require("wpcharacter");32var wptextregioncollection = require("wptextregioncollection");33var wptextregion = require("wptextregion");34var wptextregioncollection = require("wptextregioncollection");35var wptextlinecollection = require("wptextlinecollection");36var wptextline = require("wptextline");37var wptextlinewordcollection = require("wptextlinewordcollection");38var wptextlineword = require("wptextlineword");39var wpcharacter = require("wpcharacter");

Using AI Code Generation

1var page = this.getPageNum();2var region = this.getPageBox("Crop");3var tables = this.getTextRegionHuffmanTables(page, region);4console.println(tables);5console.flush();6var page = this.getPageNum();7var region = this.getPageBox("Crop");8var tables = this.getTextRegionHuffmanTables(page, region);9console.println(tables);10console.flush();11var page = this.getPageNum();12var region = this.getPageBox("Crop");13var tables = this.getTextRegionHuffmanTables(page, region);14console.println(tables);15console.flush();16var page = this.getPageNum();17var region = this.getPageBox("Crop");18var tables = this.getTextRegionHuffmanTables(page, region);19console.println(tables);20console.flush();21var page = this.getPageNum();22var region = this.getPageBox("Crop");23var tables = this.getTextRegionHuffmanTables(page, region);24console.println(tables);25console.flush();26var page = this.getPageNum();27var region = this.getPageBox("Crop");28var tables = this.getTextRegionHuffmanTables(page, region);29console.println(tables);30console.flush();31var page = this.getPageNum();32var region = this.getPageBox("Crop");33var tables = this.getTextRegionHuffmanTables(page, region);34console.println(tables);35console.flush();36var page = this.getPageNum();37var region = this.getPageBox("Crop");38var tables = this.getTextRegionHuffmanTables(page, region);39console.println(tables);40console.flush();41var page = this.getPageNum();42var region = this.getPageBox("Crop

Using AI Code Generation

1var wptextregion = require("wptextregion");2var textregion = new wptextregion();3var input = {4    "region": {5    }6};7var output = textregion.getTextRegionHuffmanTables(input);8console.log(output);9{10    "huffmanTables": {11            {12            },13            {14            },15            {16            },17            {18            },19            {20            },21            {22            }23    }24}25"dependencies": {26}

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