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}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.