How to use getBlockBufferOffset method in wpt

Best JavaScript code snippet using wpt

jpg.js

Source:jpg.js

...85      }86    }87    return code[0].children;88  }89  function getBlockBufferOffset(component, row, col) {90    return 64 * ((component.blocksPerLine + 1) * row + col);91  }92  function decodeScan(data, offset, frame, components, resetInterval,93                      spectralStart, spectralEnd, successivePrev, successive) {94    var precision = frame.precision;95    var samplesPerLine = frame.samplesPerLine;96    var scanLines = frame.scanLines;97    var mcusPerLine = frame.mcusPerLine;98    var progressive = frame.progressive;99    var maxH = frame.maxH, maxV = frame.maxV;100    var startOffset = offset, bitsData = 0, bitsCount = 0;101    function readBit() {102      if (bitsCount > 0) {103        bitsCount--;104        return (bitsData >> bitsCount) & 1;105      }106      bitsData = data[offset++];107      if (bitsData === 0xFF) {108        var nextByte = data[offset++];109        if (nextByte) {110          throw 'unexpected marker: ' +111            ((bitsData << 8) | nextByte).toString(16);112        }113        // unstuff 0114      }115      bitsCount = 7;116      return bitsData >>> 7;117    }118    function decodeHuffman(tree) {119      var node = tree;120      while (true) {121        node = node[readBit()];122        if (typeof node === 'number') {123          return node;124        }125        if (typeof node !== 'object') {126          throw 'invalid huffman sequence';127        }128      }129    }130    function receive(length) {131      var n = 0;132      while (length > 0) {133        n = (n << 1) | readBit();134        length--;135      }136      return n;137    }138    function receiveAndExtend(length) {139      if (length === 1) {140        return readBit() === 1 ? 1 : -1;141      }142      var n = receive(length);143      if (n >= 1 << (length - 1)) {144        return n;145      }146      return n + (-1 << length) + 1;147    }148    function decodeBaseline(component, offset) {149      var t = decodeHuffman(component.huffmanTableDC);150      var diff = t === 0 ? 0 : receiveAndExtend(t);151      component.blockData[offset] = (component.pred += diff);152      var k = 1;153      while (k < 64) {154        var rs = decodeHuffman(component.huffmanTableAC);155        var s = rs & 15, r = rs >> 4;156        if (s === 0) {157          if (r < 15) {158            break;159          }160          k += 16;161          continue;162        }163        k += r;164        var z = dctZigZag[k];165        component.blockData[offset + z] = receiveAndExtend(s);166        k++;167      }168    }169    function decodeDCFirst(component, offset) {170      var t = decodeHuffman(component.huffmanTableDC);171      var diff = t === 0 ? 0 : (receiveAndExtend(t) << successive);172      component.blockData[offset] = (component.pred += diff);173    }174    function decodeDCSuccessive(component, offset) {175      component.blockData[offset] |= readBit() << successive;176    }177    var eobrun = 0;178    function decodeACFirst(component, offset) {179      if (eobrun > 0) {180        eobrun--;181        return;182      }183      var k = spectralStart, e = spectralEnd;184      while (k <= e) {185        var rs = decodeHuffman(component.huffmanTableAC);186        var s = rs & 15, r = rs >> 4;187        if (s === 0) {188          if (r < 15) {189            eobrun = receive(r) + (1 << r) - 1;190            break;191          }192          k += 16;193          continue;194        }195        k += r;196        var z = dctZigZag[k];197        component.blockData[offset + z] =198          receiveAndExtend(s) * (1 << successive);199        k++;200      }201    }202    var successiveACState = 0, successiveACNextValue;203    function decodeACSuccessive(component, offset) {204      var k = spectralStart;205      var e = spectralEnd;206      var r = 0;207      var s;208      var rs;209      while (k <= e) {210        var z = dctZigZag[k];211        switch (successiveACState) {212        case 0: // initial state213          rs = decodeHuffman(component.huffmanTableAC);214          s = rs & 15;215          r = rs >> 4;216          if (s === 0) {217            if (r < 15) {218              eobrun = receive(r) + (1 << r);219              successiveACState = 4;220            } else {221              r = 16;222              successiveACState = 1;223            }224          } else {225            if (s !== 1) {226              throw 'invalid ACn encoding';227            }228            successiveACNextValue = receiveAndExtend(s);229            successiveACState = r ? 2 : 3;230          }231          continue;232        case 1: // skipping r zero items233        case 2:234          if (component.blockData[offset + z]) {235            component.blockData[offset + z] += (readBit() << successive);236          } else {237            r--;238            if (r === 0) {239              successiveACState = successiveACState === 2 ? 3 : 0;240            }241          }242          break;243        case 3: // set value for a zero item244          if (component.blockData[offset + z]) {245            component.blockData[offset + z] += (readBit() << successive);246          } else {247            component.blockData[offset + z] =248              successiveACNextValue << successive;249            successiveACState = 0;250          }251          break;252        case 4: // eob253          if (component.blockData[offset + z]) {254            component.blockData[offset + z] += (readBit() << successive);255          }256          break;257        }258        k++;259      }260      if (successiveACState === 4) {261        eobrun--;262        if (eobrun === 0) {263          successiveACState = 0;264        }265      }266    }267    function decodeMcu(component, decode, mcu, row, col) {268      var mcuRow = (mcu / mcusPerLine) | 0;269      var mcuCol = mcu % mcusPerLine;270      var blockRow = mcuRow * component.v + row;271      var blockCol = mcuCol * component.h + col;272      var offset = getBlockBufferOffset(component, blockRow, blockCol);273      decode(component, offset);274    }275    function decodeBlock(component, decode, mcu) {276      var blockRow = (mcu / component.blocksPerLine) | 0;277      var blockCol = mcu % component.blocksPerLine;278      var offset = getBlockBufferOffset(component, blockRow, blockCol);279      decode(component, offset);280    }281    var componentsLength = components.length;282    var component, i, j, k, n;283    var decodeFn;284    if (progressive) {285      if (spectralStart === 0) {286        decodeFn = successivePrev === 0 ? decodeDCFirst : decodeDCSuccessive;287      } else {288        decodeFn = successivePrev === 0 ? decodeACFirst : decodeACSuccessive;289      }290    } else {291      decodeFn = decodeBaseline;292    }293    var mcu = 0, marker;294    var mcuExpected;295    if (componentsLength === 1) {296      mcuExpected = components[0].blocksPerLine * components[0].blocksPerColumn;297    } else {298      mcuExpected = mcusPerLine * frame.mcusPerColumn;299    }300    if (!resetInterval) {301      resetInterval = mcuExpected;302    }303    var h, v;304    while (mcu < mcuExpected) {305      // reset interval stuff306      for (i = 0; i < componentsLength; i++) {307        components[i].pred = 0;308      }309      eobrun = 0;310      if (componentsLength === 1) {311        component = components[0];312        for (n = 0; n < resetInterval; n++) {313          decodeBlock(component, decodeFn, mcu);314          mcu++;315        }316      } else {317        for (n = 0; n < resetInterval; n++) {318          for (i = 0; i < componentsLength; i++) {319            component = components[i];320            h = component.h;321            v = component.v;322            for (j = 0; j < v; j++) {323              for (k = 0; k < h; k++) {324                decodeMcu(component, decodeFn, mcu, j, k);325              }326            }327          }328          mcu++;329        }330      }331      // find marker332      bitsCount = 0;333      marker = (data[offset] << 8) | data[offset + 1];334      if (marker <= 0xFF00) {335        throw 'marker was not found';336      }337      if (marker >= 0xFFD0 && marker <= 0xFFD7) { // RSTx338        offset += 2;339      } else {340        break;341      }342    }343    return offset - startOffset;344  }345  // A port of poppler's IDCT method which in turn is taken from:346  //   Christoph Loeffler, Adriaan Ligtenberg, George S. Moschytz,347  //   'Practical Fast 1-D DCT Algorithms with 11 Multiplications',348  //   IEEE Intl. Conf. on Acoustics, Speech & Signal Processing, 1989,349  //   988-991.350  function quantizeAndInverse(component, blockBufferOffset, p) {351    var qt = component.quantizationTable, blockData = component.blockData;352    var v0, v1, v2, v3, v4, v5, v6, v7;353    var p0, p1, p2, p3, p4, p5, p6, p7;354    var t;355    // inverse DCT on rows356    for (var row = 0; row < 64; row += 8) {357      // gather block data358      p0 = blockData[blockBufferOffset + row];359      p1 = blockData[blockBufferOffset + row + 1];360      p2 = blockData[blockBufferOffset + row + 2];361      p3 = blockData[blockBufferOffset + row + 3];362      p4 = blockData[blockBufferOffset + row + 4];363      p5 = blockData[blockBufferOffset + row + 5];364      p6 = blockData[blockBufferOffset + row + 6];365      p7 = blockData[blockBufferOffset + row + 7];366      // dequant p0367      p0 *= qt[row];368      // check for all-zero AC coefficients369      if ((p1 | p2 | p3 | p4 | p5 | p6 | p7) === 0) {370        t = (dctSqrt2 * p0 + 512) >> 10;371        p[row] = t;372        p[row + 1] = t;373        p[row + 2] = t;374        p[row + 3] = t;375        p[row + 4] = t;376        p[row + 5] = t;377        p[row + 6] = t;378        p[row + 7] = t;379        continue;380      }381      // dequant p1 ... p7382      p1 *= qt[row + 1];383      p2 *= qt[row + 2];384      p3 *= qt[row + 3];385      p4 *= qt[row + 4];386      p5 *= qt[row + 5];387      p6 *= qt[row + 6];388      p7 *= qt[row + 7];389      // stage 4390      v0 = (dctSqrt2 * p0 + 128) >> 8;391      v1 = (dctSqrt2 * p4 + 128) >> 8;392      v2 = p2;393      v3 = p6;394      v4 = (dctSqrt1d2 * (p1 - p7) + 128) >> 8;395      v7 = (dctSqrt1d2 * (p1 + p7) + 128) >> 8;396      v5 = p3 << 4;397      v6 = p5 << 4;398      // stage 3399      v0 = (v0 + v1 + 1) >> 1;400      v1 = v0 - v1;401      t  = (v2 * dctSin6 + v3 * dctCos6 + 128) >> 8;402      v2 = (v2 * dctCos6 - v3 * dctSin6 + 128) >> 8;403      v3 = t;404      v4 = (v4 + v6 + 1) >> 1;405      v6 = v4 - v6;406      v7 = (v7 + v5 + 1) >> 1;407      v5 = v7 - v5;408      // stage 2409      v0 = (v0 + v3 + 1) >> 1;410      v3 = v0 - v3;411      v1 = (v1 + v2 + 1) >> 1;412      v2 = v1 - v2;413      t  = (v4 * dctSin3 + v7 * dctCos3 + 2048) >> 12;414      v4 = (v4 * dctCos3 - v7 * dctSin3 + 2048) >> 12;415      v7 = t;416      t  = (v5 * dctSin1 + v6 * dctCos1 + 2048) >> 12;417      v5 = (v5 * dctCos1 - v6 * dctSin1 + 2048) >> 12;418      v6 = t;419      // stage 1420      p[row] = v0 + v7;421      p[row + 7] = v0 - v7;422      p[row + 1] = v1 + v6;423      p[row + 6] = v1 - v6;424      p[row + 2] = v2 + v5;425      p[row + 5] = v2 - v5;426      p[row + 3] = v3 + v4;427      p[row + 4] = v3 - v4;428    }429    // inverse DCT on columns430    for (var col = 0; col < 8; ++col) {431      p0 = p[col];432      p1 = p[col +  8];433      p2 = p[col + 16];434      p3 = p[col + 24];435      p4 = p[col + 32];436      p5 = p[col + 40];437      p6 = p[col + 48];438      p7 = p[col + 56];439      // check for all-zero AC coefficients440      if ((p1 | p2 | p3 | p4 | p5 | p6 | p7) === 0) {441        t = (dctSqrt2 * p0 + 8192) >> 14;442        // convert to 8 bit443        t = (t < -2040) ? 0 : (t >= 2024) ? 255 : (t + 2056) >> 4;444        blockData[blockBufferOffset + col] = t;445        blockData[blockBufferOffset + col +  8] = t;446        blockData[blockBufferOffset + col + 16] = t;447        blockData[blockBufferOffset + col + 24] = t;448        blockData[blockBufferOffset + col + 32] = t;449        blockData[blockBufferOffset + col + 40] = t;450        blockData[blockBufferOffset + col + 48] = t;451        blockData[blockBufferOffset + col + 56] = t;452        continue;453      }454      // stage 4455      v0 = (dctSqrt2 * p0 + 2048) >> 12;456      v1 = (dctSqrt2 * p4 + 2048) >> 12;457      v2 = p2;458      v3 = p6;459      v4 = (dctSqrt1d2 * (p1 - p7) + 2048) >> 12;460      v7 = (dctSqrt1d2 * (p1 + p7) + 2048) >> 12;461      v5 = p3;462      v6 = p5;463      // stage 3464      // Shift v0 by 128.5 << 5 here, so we don't need to shift p0...p7 when465      // converting to UInt8 range later.466      v0 = ((v0 + v1 + 1) >> 1) + 4112;467      v1 = v0 - v1;468      t  = (v2 * dctSin6 + v3 * dctCos6 + 2048) >> 12;469      v2 = (v2 * dctCos6 - v3 * dctSin6 + 2048) >> 12;470      v3 = t;471      v4 = (v4 + v6 + 1) >> 1;472      v6 = v4 - v6;473      v7 = (v7 + v5 + 1) >> 1;474      v5 = v7 - v5;475      // stage 2476      v0 = (v0 + v3 + 1) >> 1;477      v3 = v0 - v3;478      v1 = (v1 + v2 + 1) >> 1;479      v2 = v1 - v2;480      t  = (v4 * dctSin3 + v7 * dctCos3 + 2048) >> 12;481      v4 = (v4 * dctCos3 - v7 * dctSin3 + 2048) >> 12;482      v7 = t;483      t  = (v5 * dctSin1 + v6 * dctCos1 + 2048) >> 12;484      v5 = (v5 * dctCos1 - v6 * dctSin1 + 2048) >> 12;485      v6 = t;486      // stage 1487      p0 = v0 + v7;488      p7 = v0 - v7;489      p1 = v1 + v6;490      p6 = v1 - v6;491      p2 = v2 + v5;492      p5 = v2 - v5;493      p3 = v3 + v4;494      p4 = v3 - v4;495      // convert to 8-bit integers496      p0 = (p0 < 16) ? 0 : (p0 >= 4080) ? 255 : p0 >> 4;497      p1 = (p1 < 16) ? 0 : (p1 >= 4080) ? 255 : p1 >> 4;498      p2 = (p2 < 16) ? 0 : (p2 >= 4080) ? 255 : p2 >> 4;499      p3 = (p3 < 16) ? 0 : (p3 >= 4080) ? 255 : p3 >> 4;500      p4 = (p4 < 16) ? 0 : (p4 >= 4080) ? 255 : p4 >> 4;501      p5 = (p5 < 16) ? 0 : (p5 >= 4080) ? 255 : p5 >> 4;502      p6 = (p6 < 16) ? 0 : (p6 >= 4080) ? 255 : p6 >> 4;503      p7 = (p7 < 16) ? 0 : (p7 >= 4080) ? 255 : p7 >> 4;504      // store block data505      blockData[blockBufferOffset + col] = p0;506      blockData[blockBufferOffset + col +  8] = p1;507      blockData[blockBufferOffset + col + 16] = p2;508      blockData[blockBufferOffset + col + 24] = p3;509      blockData[blockBufferOffset + col + 32] = p4;510      blockData[blockBufferOffset + col + 40] = p5;511      blockData[blockBufferOffset + col + 48] = p6;512      blockData[blockBufferOffset + col + 56] = p7;513    }514  }515  function buildComponentData(frame, component) {516    var blocksPerLine = component.blocksPerLine;517    var blocksPerColumn = component.blocksPerColumn;518    var computationBuffer = new Int16Array(64);519    for (var blockRow = 0; blockRow < blocksPerColumn; blockRow++) {520      for (var blockCol = 0; blockCol < blocksPerLine; blockCol++) {521        var offset = getBlockBufferOffset(component, blockRow, blockCol);522        quantizeAndInverse(component, offset, computationBuffer);523      }524    }525    return component.blockData;526  }527  function clamp0to255(a) {528    return a <= 0 ? 0 : a >= 255 ? 255 : a;529  }530  constructor.prototype = {531    parse: function parse(data) {532      function readUint16() {533        var value = (data[offset] << 8) | data[offset + 1];534        offset += 2;535        return value;...

jpeg.js

Source:jpeg.js

...80      }81    }82    return code[0].children;83  }84  function getBlockBufferOffset(component, row, col) {85    return 64 * ((component.blocksPerLine + 1) * row + col);86  }87  function decodeScan(data, offset,88                      frame, components, resetInterval,89                      spectralStart, spectralEnd,90                      successivePrev, successive) {91    var precision = frame.precision;92    var samplesPerLine = frame.samplesPerLine;93    var scanLines = frame.scanLines;94    var mcusPerLine = frame.mcusPerLine;95    var progressive = frame.progressive;96    var maxH = frame.maxH, maxV = frame.maxV;97    var startOffset = offset, bitsData = 0, bitsCount = 0;98    function readBit() {99      if (bitsCount > 0) {100        bitsCount--;101        return (bitsData >> bitsCount) & 1;102      }103      bitsData = data[offset++];104      if (bitsData == 0xFF) {105        var nextByte = data[offset++];106        if (nextByte) {107          throw "unexpected marker: " + ((bitsData << 8) | nextByte).toString(16);108        }109        // unstuff 0110      }111      bitsCount = 7;112      return bitsData >>> 7;113    }114    function decodeHuffman(tree) {115      var node = tree;116      var bit;117      while ((bit = readBit()) !== null) {118        node = node[bit];119        if (typeof node === 'number')120          return node;121        if (typeof node !== 'object')122          throw "invalid huffman sequence";123      }124      return null;125    }126    function receive(length) {127      var n = 0;128      while (length > 0) {129        var bit = readBit();130        if (bit === null)131          return;132        n = (n << 1) | bit;133        length--;134      }135      return n;136    }137    function receiveAndExtend(length) {138      var n = receive(length);139      if (n >= 1 << (length - 1))140        return n;141      return n + (-1 << length) + 1;142    }143    function decodeBaseline(component, offset) {144      var t = decodeHuffman(component.huffmanTableDC);145      var diff = t === 0 ? 0 : receiveAndExtend(t);146      component.blockData[offset] = (component.pred += diff);147      var k = 1;148      while (k < 64) {149        var rs = decodeHuffman(component.huffmanTableAC);150        var s = rs & 15, r = rs >> 4;151        if (s === 0) {152          if (r < 15)153            break;154          k += 16;155          continue;156        }157        k += r;158        var z = dctZigZag[k];159        component.blockData[offset + z] = receiveAndExtend(s);160        k++;161      }162    }163    function decodeDCFirst(component, offset) {164      var t = decodeHuffman(component.huffmanTableDC);165      var diff = t === 0 ? 0 : (receiveAndExtend(t) << successive);166      component.blockData[offset] = (component.pred += diff);167    }168    function decodeDCSuccessive(component, offset) {169      component.blockData[offset] |= readBit() << successive;170    }171    var eobrun = 0;172    function decodeACFirst(component, offset) {173      if (eobrun > 0) {174        eobrun--;175        return;176      }177      var k = spectralStart, e = spectralEnd;178      while (k <= e) {179        var rs = decodeHuffman(component.huffmanTableAC);180        var s = rs & 15, r = rs >> 4;181        if (s === 0) {182          if (r < 15) {183            eobrun = receive(r) + (1 << r) - 1;184            break;185          }186          k += 16;187          continue;188        }189        k += r;190        var z = dctZigZag[k];191        component.blockData[offset + z] = receiveAndExtend(s) * (1 << successive);192        k++;193      }194    }195    var successiveACState = 0, successiveACNextValue;196    function decodeACSuccessive(component, offset) {197      var k = spectralStart, e = spectralEnd, r = 0;198      while (k <= e) {199        var z = dctZigZag[k];200        switch (successiveACState) {201          case 0: // initial state202            var rs = decodeHuffman(component.huffmanTableAC);203            var s = rs & 15;204            r = rs >> 4;205            if (s === 0) {206              if (r < 15) {207                eobrun = receive(r) + (1 << r);208                successiveACState = 4;209              } else {210                r = 16;211                successiveACState = 1;212              }213            } else {214              if (s !== 1)215                throw "invalid ACn encoding";216              successiveACNextValue = receiveAndExtend(s);217              successiveACState = r ? 2 : 3;218            }219            continue;220          case 1: // skipping r zero items221          case 2:222            if (component.blockData[offset + z]) {223              component.blockData[offset + z] += (readBit() << successive);224            } else {225              r--;226              if (r === 0)227                successiveACState = successiveACState == 2 ? 3 : 0;228            }229            break;230          case 3: // set value for a zero item231            if (component.blockData[offset + z]) {232              component.blockData[offset + z] += (readBit() << successive);233            } else {234              component.blockData[offset + z] = successiveACNextValue << successive;235              successiveACState = 0;236            }237            break;238          case 4: // eob239            if (component.blockData[offset + z]) {240              component.blockData[offset + z] += (readBit() << successive);241            }242            break;243        }244        k++;245      }246      if (successiveACState === 4) {247        eobrun--;248        if (eobrun === 0)249          successiveACState = 0;250      }251    }252    function decodeMcu(component, decode, mcu, row, col) {253      var mcuRow = (mcu / mcusPerLine) | 0;254      var mcuCol = mcu % mcusPerLine;255      var blockRow = mcuRow * component.v + row;256      var blockCol = mcuCol * component.h + col;257      var offset = getBlockBufferOffset(component, blockRow, blockCol);258      decode(component, offset);259    }260    function decodeBlock(component, decode, mcu) {261      var blockRow = (mcu / component.blocksPerLine) | 0;262      var blockCol = mcu % component.blocksPerLine;263      var offset = getBlockBufferOffset(component, blockRow, blockCol);264      decode(component, offset);265    }266    var componentsLength = components.length;267    var component, i, j, k, n;268    var decodeFn;269    if (progressive) {270      if (spectralStart === 0)271        decodeFn = successivePrev === 0 ? decodeDCFirst : decodeDCSuccessive;272      else273        decodeFn = successivePrev === 0 ? decodeACFirst : decodeACSuccessive;274    } else {275      decodeFn = decodeBaseline;276    }277    var mcu = 0, marker;278    var mcuExpected;279    if (componentsLength == 1) {280      mcuExpected = components[0].blocksPerLine * components[0].blocksPerColumn;281    } else {282      mcuExpected = mcusPerLine * frame.mcusPerColumn;283    }284    if (!resetInterval) {285      resetInterval = mcuExpected;286    }287    var h, v;288    while (mcu < mcuExpected) {289      // reset interval stuff290      for (i = 0; i < componentsLength; i++) {291        components[i].pred = 0;292      }293      eobrun = 0;294      if (componentsLength == 1) {295        component = components[0];296        for (n = 0; n < resetInterval; n++) {297          decodeBlock(component, decodeFn, mcu);298          mcu++;299        }300      } else {301        for (n = 0; n < resetInterval; n++) {302          for (i = 0; i < componentsLength; i++) {303            component = components[i];304            h = component.h;305            v = component.v;306            for (j = 0; j < v; j++) {307              for (k = 0; k < h; k++) {308                decodeMcu(component, decodeFn, mcu, j, k);309              }310            }311          }312          mcu++;313        }314      }315      // find marker316      bitsCount = 0;317      marker = (data[offset] << 8) | data[offset + 1];318      if (marker <= 0xFF00) {319        throw "marker was not found";320      }321      if (marker >= 0xFFD0 && marker <= 0xFFD7) { // RSTx322        offset += 2;323      } else {324        break;325      }326    }327    return offset - startOffset;328  }329  // A port of poppler's IDCT method which in turn is taken from:330  //   Christoph Loeffler, Adriaan Ligtenberg, George S. Moschytz,331  //   "Practical Fast 1-D DCT Algorithms with 11 Multiplications",332  //   IEEE Intl. Conf. on Acoustics, Speech & Signal Processing, 1989,333  //   988-991.334  function quantizeAndInverse(component, blockBufferOffset, p) {335    var qt = component.quantizationTable;336    var v0, v1, v2, v3, v4, v5, v6, v7, t;337    var i;338    // dequant339    for (i = 0; i < 64; i++) {340      p[i] = component.blockData[blockBufferOffset + i] * qt[i];341    }342    // inverse DCT on rows343    for (i = 0; i < 8; ++i) {344      var row = 8 * i;345      // check for all-zero AC coefficients346      if (p[1 + row] === 0 && p[2 + row] === 0 && p[3 + row] === 0 &&347        p[4 + row] === 0 && p[5 + row] === 0 && p[6 + row] === 0 &&348        p[7 + row] === 0) {349        t = (dctSqrt2 * p[0 + row] + 512) >> 10;350        p[0 + row] = t;351        p[1 + row] = t;352        p[2 + row] = t;353        p[3 + row] = t;354        p[4 + row] = t;355        p[5 + row] = t;356        p[6 + row] = t;357        p[7 + row] = t;358        continue;359      }360      // stage 4361      v0 = (dctSqrt2 * p[0 + row] + 128) >> 8;362      v1 = (dctSqrt2 * p[4 + row] + 128) >> 8;363      v2 = p[2 + row];364      v3 = p[6 + row];365      v4 = (dctSqrt1d2 * (p[1 + row] - p[7 + row]) + 128) >> 8;366      v7 = (dctSqrt1d2 * (p[1 + row] + p[7 + row]) + 128) >> 8;367      v5 = p[3 + row] << 4;368      v6 = p[5 + row] << 4;369      // stage 3370      t = (v0 - v1 + 1) >> 1;371      v0 = (v0 + v1 + 1) >> 1;372      v1 = t;373      t = (v2 * dctSin6 + v3 * dctCos6 + 128) >> 8;374      v2 = (v2 * dctCos6 - v3 * dctSin6 + 128) >> 8;375      v3 = t;376      t = (v4 - v6 + 1) >> 1;377      v4 = (v4 + v6 + 1) >> 1;378      v6 = t;379      t = (v7 + v5 + 1) >> 1;380      v5 = (v7 - v5 + 1) >> 1;381      v7 = t;382      // stage 2383      t = (v0 - v3 + 1) >> 1;384      v0 = (v0 + v3 + 1) >> 1;385      v3 = t;386      t = (v1 - v2 + 1) >> 1;387      v1 = (v1 + v2 + 1) >> 1;388      v2 = t;389      t = (v4 * dctSin3 + v7 * dctCos3 + 2048) >> 12;390      v4 = (v4 * dctCos3 - v7 * dctSin3 + 2048) >> 12;391      v7 = t;392      t = (v5 * dctSin1 + v6 * dctCos1 + 2048) >> 12;393      v5 = (v5 * dctCos1 - v6 * dctSin1 + 2048) >> 12;394      v6 = t;395      // stage 1396      p[0 + row] = v0 + v7;397      p[7 + row] = v0 - v7;398      p[1 + row] = v1 + v6;399      p[6 + row] = v1 - v6;400      p[2 + row] = v2 + v5;401      p[5 + row] = v2 - v5;402      p[3 + row] = v3 + v4;403      p[4 + row] = v3 - v4;404    }405    // inverse DCT on columns406    for (i = 0; i < 8; ++i) {407      var col = i;408      // check for all-zero AC coefficients409      if (p[1 * 8 + col] === 0 && p[2 * 8 + col] === 0 && p[3 * 8 + col] === 0 &&410        p[4 * 8 + col] === 0 && p[5 * 8 + col] === 0 && p[6 * 8 + col] === 0 &&411        p[7 * 8 + col] === 0) {412        t = (dctSqrt2 * p[i + 0] + 8192) >> 14;413        p[0 * 8 + col] = t;414        p[1 * 8 + col] = t;415        p[2 * 8 + col] = t;416        p[3 * 8 + col] = t;417        p[4 * 8 + col] = t;418        p[5 * 8 + col] = t;419        p[6 * 8 + col] = t;420        p[7 * 8 + col] = t;421        continue;422      }423      // stage 4424      v0 = (dctSqrt2 * p[0 * 8 + col] + 2048) >> 12;425      v1 = (dctSqrt2 * p[4 * 8 + col] + 2048) >> 12;426      v2 = p[2 * 8 + col];427      v3 = p[6 * 8 + col];428      v4 = (dctSqrt1d2 * (p[1 * 8 + col] - p[7 * 8 + col]) + 2048) >> 12;429      v7 = (dctSqrt1d2 * (p[1 * 8 + col] + p[7 * 8 + col]) + 2048) >> 12;430      v5 = p[3 * 8 + col];431      v6 = p[5 * 8 + col];432      // stage 3433      t = (v0 - v1 + 1) >> 1;434      v0 = (v0 + v1 + 1) >> 1;435      v1 = t;436      t = (v2 * dctSin6 + v3 * dctCos6 + 2048) >> 12;437      v2 = (v2 * dctCos6 - v3 * dctSin6 + 2048) >> 12;438      v3 = t;439      t = (v4 - v6 + 1) >> 1;440      v4 = (v4 + v6 + 1) >> 1;441      v6 = t;442      t = (v7 + v5 + 1) >> 1;443      v5 = (v7 - v5 + 1) >> 1;444      v7 = t;445      // stage 2446      t = (v0 - v3 + 1) >> 1;447      v0 = (v0 + v3 + 1) >> 1;448      v3 = t;449      t = (v1 - v2 + 1) >> 1;450      v1 = (v1 + v2 + 1) >> 1;451      v2 = t;452      t = (v4 * dctSin3 + v7 * dctCos3 + 2048) >> 12;453      v4 = (v4 * dctCos3 - v7 * dctSin3 + 2048) >> 12;454      v7 = t;455      t = (v5 * dctSin1 + v6 * dctCos1 + 2048) >> 12;456      v5 = (v5 * dctCos1 - v6 * dctSin1 + 2048) >> 12;457      v6 = t;458      // stage 1459      p[0 * 8 + col] = v0 + v7;460      p[7 * 8 + col] = v0 - v7;461      p[1 * 8 + col] = v1 + v6;462      p[6 * 8 + col] = v1 - v6;463      p[2 * 8 + col] = v2 + v5;464      p[5 * 8 + col] = v2 - v5;465      p[3 * 8 + col] = v3 + v4;466      p[4 * 8 + col] = v3 - v4;467    }468    // convert to 8-bit integers469    for (i = 0; i < 64; ++i) {470      var index = blockBufferOffset + i;471      var q = p[i];472      q = (q <= -2056 / component.bitConversion) ? 0 :473        (q >= 2024 / component.bitConversion) ? 255 / component.bitConversion :474        (q + 2056 / component.bitConversion) >> 4;475      component.blockData[index] = q;476    }477  }478  function buildComponentData(frame, component) {479    var lines = [];480    var blocksPerLine = component.blocksPerLine;481    var blocksPerColumn = component.blocksPerColumn;482    var samplesPerLine = blocksPerLine << 3;483    var computationBuffer = new Int32Array(64);484    var i, j, ll = 0;485    for (var blockRow = 0; blockRow < blocksPerColumn; blockRow++) {486      for (var blockCol = 0; blockCol < blocksPerLine; blockCol++) {487        var offset = getBlockBufferOffset(component, blockRow, blockCol);488        quantizeAndInverse(component, offset, computationBuffer);489      }490    }491    return component.blockData;492  }493  function clampToUint8(a) {494    return a <= 0 ? 0 : a >= 255 ? 255 : a | 0;495  }496  constructor.prototype = {497    load: function load(path) {498      var handleData = (function (data) {499        this.parse(data);500        if (this.onload)501          this.onload();502      }).bind(this);503      if (path.indexOf("data:") > -1) {504        var offset = path.indexOf("base64,") + 7;505        var data = atob(path.substring(offset));506        var arr = new Uint8Array(data.length);507        for (var i = data.length - 1; i >= 0; i--) {508          arr[i] = data.charCodeAt(i);509        }510        handleData(data);511      } else {512        var xhr = new XMLHttpRequest();513        xhr.open("GET", path, true);514        xhr.responseType = "arraybuffer";515        xhr.onload = (function () {516          // TODO catch parse error517          var data = new Uint8Array(xhr.response);518          handleData(data);519        }).bind(this);520        xhr.send(null);521      }522    },523    parse: function parse(data) {524      function readUint16() {525        var value = (data[offset] << 8) | data[offset + 1];526        offset += 2;527        return value;528      }529      function readDataBlock() {530        var length = readUint16();531        var array = data.subarray(offset, offset + length - 2);532        offset += array.length;533        return array;534      }535      function prepareComponents(frame) {536        var mcusPerLine = Math.ceil(frame.samplesPerLine / 8 / frame.maxH);537        var mcusPerColumn = Math.ceil(frame.scanLines / 8 / frame.maxV);538        for (var i = 0; i < frame.components.length; i++) {539          component = frame.components[i];540          var blocksPerLine = Math.ceil(Math.ceil(frame.samplesPerLine / 8) * component.h / frame.maxH);541          var blocksPerColumn = Math.ceil(Math.ceil(frame.scanLines / 8) * component.v / frame.maxV);542          var blocksPerLineForMcu = mcusPerLine * component.h;543          var blocksPerColumnForMcu = mcusPerColumn * component.v;544          var blocksBufferSize = 64 * blocksPerColumnForMcu * (blocksPerLineForMcu + 1);545          component.blockData = new Int16Array(blocksBufferSize);546          component.blocksPerLine = blocksPerLine;547          component.blocksPerColumn = blocksPerColumn;548        }549        frame.mcusPerLine = mcusPerLine;550        frame.mcusPerColumn = mcusPerColumn;551      }552      var offset = 0, length = data.length;553      var jfif = null;554      var adobe = null;555      var pixels = null;556      var frame, resetInterval;557      var quantizationTables = [];558      var huffmanTablesAC = [], huffmanTablesDC = [];559      var fileMarker = readUint16();560      if (fileMarker != 0xFFD8) { // SOI (Start of Image)561        throw "SOI not found";562      }563      fileMarker = readUint16();564      while (fileMarker != 0xFFD9) { // EOI (End of image)565        var i, j, l;566        switch (fileMarker) {567          case 0xFFE0: // APP0 (Application Specific)568          case 0xFFE1: // APP1569          case 0xFFE2: // APP2570          case 0xFFE3: // APP3571          case 0xFFE4: // APP4572          case 0xFFE5: // APP5573          case 0xFFE6: // APP6574          case 0xFFE7: // APP7575          case 0xFFE8: // APP8576          case 0xFFE9: // APP9577          case 0xFFEA: // APP10578          case 0xFFEB: // APP11579          case 0xFFEC: // APP12580          case 0xFFED: // APP13581          case 0xFFEE: // APP14582          case 0xFFEF: // APP15583          case 0xFFFE: // COM (Comment)584            var appData = readDataBlock();585            if (fileMarker === 0xFFE0) {586              if (appData[0] === 0x4A && appData[1] === 0x46 && appData[2] === 0x49 &&587                appData[3] === 0x46 && appData[4] === 0) { // 'JFIF\x00'588                jfif = {589                  version: {major: appData[5], minor: appData[6]},590                  densityUnits: appData[7],591                  xDensity: (appData[8] << 8) | appData[9],592                  yDensity: (appData[10] << 8) | appData[11],593                  thumbWidth: appData[12],594                  thumbHeight: appData[13],595                  thumbData: appData.subarray(14, 14 + 3 * appData[12] * appData[13])596                };597              }598            }599            // TODO APP1 - Exif600            if (fileMarker === 0xFFEE) {601              if (appData[0] === 0x41 && appData[1] === 0x64 && appData[2] === 0x6F &&602                appData[3] === 0x62 && appData[4] === 0x65 && appData[5] === 0) { // 'Adobe\x00'603                adobe = {604                  version: appData[6],605                  flags0: (appData[7] << 8) | appData[8],606                  flags1: (appData[9] << 8) | appData[10],607                  transformCode: appData[11]608                };609              }610            }611            break;612          case 0xFFDB: // DQT (Define Quantization Tables)613            var quantizationTablesLength = readUint16();614            var quantizationTablesEnd = quantizationTablesLength + offset - 2;615            while (offset < quantizationTablesEnd) {616              var quantizationTableSpec = data[offset++];617              var tableData = new Int32Array(64);618              if ((quantizationTableSpec >> 4) === 0) { // 8 bit values619                for (j = 0; j < 64; j++) {620                  var z = dctZigZag[j];621                  tableData[z] = data[offset++];622                }623              } else if ((quantizationTableSpec >> 4) === 1) { //16 bit624                for (j = 0; j < 64; j++) {625                  var zz = dctZigZag[j];626                  tableData[zz] = readUint16();627                }628              } else629                throw "DQT: invalid table spec";630              quantizationTables[quantizationTableSpec & 15] = tableData;631            }632            break;633          case 0xFFC0: // SOF0 (Start of Frame, Baseline DCT)634          case 0xFFC1: // SOF1 (Start of Frame, Extended DCT)635          case 0xFFC2: // SOF2 (Start of Frame, Progressive DCT)636            if (frame) {637              throw "Only single frame JPEGs supported";638            }639            readUint16(); // skip data length640            frame = {};641            frame.extended = (fileMarker === 0xFFC1);642            frame.progressive = (fileMarker === 0xFFC2);643            frame.precision = data[offset++];644            frame.scanLines = readUint16();645            frame.samplesPerLine = readUint16();646            frame.components = [];647            frame.componentIds = {};648            var componentsCount = data[offset++], componentId;649            var maxH = 0, maxV = 0;650            for (i = 0; i < componentsCount; i++) {651              componentId = data[offset];652              var h = data[offset + 1] >> 4;653              var v = data[offset + 1] & 15;654              if (maxH < h)655                maxH = h;656              if (maxV < v)657                maxV = v;658              var qId = data[offset + 2];659              l = frame.components.push({660                h: h,661                v: v,662                quantizationTable: quantizationTables[qId],663                quantizationTableId: qId,664                bitConversion: 255 / ((1 << frame.precision) - 1)665              });666              frame.componentIds[componentId] = l - 1;667              offset += 3;668            }669            frame.maxH = maxH;670            frame.maxV = maxV;671            prepareComponents(frame);672            break;673          case 0xFFC4: // DHT (Define Huffman Tables)674            var huffmanLength = readUint16();675            for (i = 2; i < huffmanLength; ) {676              var huffmanTableSpec = data[offset++];677              var codeLengths = new Uint8Array(16);678              var codeLengthSum = 0;679              for (j = 0; j < 16; j++, offset++)680                codeLengthSum += (codeLengths[j] = data[offset]);681              var huffmanValues = new Uint8Array(codeLengthSum);682              for (j = 0; j < codeLengthSum; j++, offset++)683                huffmanValues[j] = data[offset];684              i += 17 + codeLengthSum;685              ((huffmanTableSpec >> 4) === 0 ?686                huffmanTablesDC : huffmanTablesAC)[huffmanTableSpec & 15] =687                buildHuffmanTable(codeLengths, huffmanValues);688            }689            break;690          case 0xFFDD: // DRI (Define Restart Interval)691            readUint16(); // skip data length692            resetInterval = readUint16();693            break;694          case 0xFFDA: // SOS (Start of Scan)695            var scanLength = readUint16();696            var selectorsCount = data[offset++];697            var components = [], component;698            for (i = 0; i < selectorsCount; i++) {699              var componentIndex = frame.componentIds[data[offset++]];700              component = frame.components[componentIndex];701              var tableSpec = data[offset++];702              component.huffmanTableDC = huffmanTablesDC[tableSpec >> 4];703              component.huffmanTableAC = huffmanTablesAC[tableSpec & 15];704              components.push(component);705            }706            var spectralStart = data[offset++];707            var spectralEnd = data[offset++];708            var successiveApproximation = data[offset++];709            var processed = decodeScan(data, offset,710              frame, components, resetInterval,711              spectralStart, spectralEnd,712              successiveApproximation >> 4, successiveApproximation & 15);713            offset += processed;714            break;715          case 0xFFFF: // Fill bytes716            if (data[offset] !== 0xFF) { // Avoid skipping a valid marker.717              offset--;718            }719            break;720          default:721            if (data[offset - 3] == 0xFF &&722              data[offset - 2] >= 0xC0 && data[offset - 2] <= 0xFE) {723              // could be incorrect encoding -- last 0xFF byte of the previous724              // block was eaten by the encoder725              offset -= 3;726              break;727            }728            throw "unknown JPEG marker " + fileMarker.toString(16);729        }730        fileMarker = readUint16();731      }732      this.width = frame.samplesPerLine;733      this.height = frame.scanLines;734      this.jfif = jfif;735      this.adobe = adobe;736      this.components = [];737      switch (frame.components.length)738      {739        case 1:740          this.colorspace = ColorSpace.Grayscale;741          break;742        case 3:743          if (this.adobe)744            this.colorspace = ColorSpace.AdobeRGB;745          else746            this.colorspace = ColorSpace.RGB;747          break;748        case 4:749          this.colorspace = ColorSpace.CYMK;750          break;751        default:752          this.colorspace = ColorSpace.Unknown;753      }754      for (var i = 0; i < frame.components.length; i++) {755        var component = frame.components[i];756        if (!component.quantizationTable && component.quantizationTableId !== null)757          component.quantizationTable = quantizationTables[component.quantizationTableId];758        this.components.push({759          output: buildComponentData(frame, component),760          scaleX: component.h / frame.maxH,761          scaleY: component.v / frame.maxV,762          blocksPerLine: component.blocksPerLine,763          blocksPerColumn: component.blocksPerColumn,764          bitConversion: component.bitConversion765        });766      }767    },768    getData16: function getData16(width, height) {769      if (this.components.length !== 1)770        throw 'Unsupported color mode';771      var scaleX = this.width / width, scaleY = this.height / height;772      var component, componentScaleX, componentScaleY;773      var x, y, i;774      var offset = 0;775      var numComponents = this.components.length;776      var dataLength = width * height * numComponents;777      var data = new Uint16Array(dataLength);778      var componentLine;779      // lineData is reused for all components. Assume first component is780      // the biggest781      var lineData = new Uint16Array((this.components[0].blocksPerLine << 3) *782      this.components[0].blocksPerColumn * 8);783      // First construct image data ...784      for (i = 0; i < numComponents; i++) {785        component = this.components[i];786        var blocksPerLine = component.blocksPerLine;787        var blocksPerColumn = component.blocksPerColumn;788        var samplesPerLine = blocksPerLine << 3;789        var j, k, ll = 0;790        var lineOffset = 0;791        for (var blockRow = 0; blockRow < blocksPerColumn; blockRow++) {792          var scanLine = blockRow << 3;793          for (var blockCol = 0; blockCol < blocksPerLine; blockCol++) {794            var bufferOffset = getBlockBufferOffset(component, blockRow, blockCol);795            var offset = 0, sample = blockCol << 3;796            for (j = 0; j < 8; j++) {797              var lineOffset = (scanLine + j) * samplesPerLine;798              for (k = 0; k < 8; k++) {799                lineData[lineOffset + sample + k] =800                  component.output[bufferOffset + offset++];801              }802            }803          }804        }805        componentScaleX = component.scaleX * scaleX;806        componentScaleY = component.scaleY * scaleY;807        offset = i;808        var cx, cy;809        var index;810        for (y = 0; y < height; y++) {811          for (x = 0; x < width; x++) {812            cy = 0 | (y * componentScaleY);813            cx = 0 | (x * componentScaleX);814            index = cy * samplesPerLine + cx;815            data[offset] = lineData[index];816            offset += numComponents;817          }818        }819      }820      return data;821    },822    getData: function getData(width, height) {823      var scaleX = this.width / width, scaleY = this.height / height;824      var component, componentScaleX, componentScaleY;825      var x, y, i;826      var offset = 0;827      var Y, Cb, Cr, K, C, M, Ye, R, G, B;828      var colorTransform;829      var numComponents = this.components.length;830      var dataLength = width * height * numComponents;831      var data = new Uint8Array(dataLength);832      var componentLine;833      // lineData is reused for all components. Assume first component is834      // the biggest835      var lineData = new Uint8Array((this.components[0].blocksPerLine << 3) *836      this.components[0].blocksPerColumn * 8);837      // First construct image data ...838      for (i = 0; i < numComponents; i++) {839        component = this.components[i];840        var blocksPerLine = component.blocksPerLine;841        var blocksPerColumn = component.blocksPerColumn;842        var samplesPerLine = blocksPerLine << 3;843        var j, k, ll = 0;844        var lineOffset = 0;845        for (var blockRow = 0; blockRow < blocksPerColumn; blockRow++) {846          var scanLine = blockRow << 3;847          for (var blockCol = 0; blockCol < blocksPerLine; blockCol++) {848            var bufferOffset = getBlockBufferOffset(component, blockRow, blockCol);849            var offset = 0, sample = blockCol << 3;850            for (j = 0; j < 8; j++) {851              var lineOffset = (scanLine + j) * samplesPerLine;852              for (k = 0; k < 8; k++) {853                lineData[lineOffset + sample + k] =854                  component.output[bufferOffset + offset++] * component.bitConversion;855              }856            }857          }858        }859        componentScaleX = component.scaleX * scaleX;860        componentScaleY = component.scaleY * scaleY;861        offset = i;862        var cx, cy;...

Using AI Code Generation

1var wpt = new WPT();2var offset = wpt.getBlockBufferOffset(0);3console.log(offset);4WPT.prototype.getBlockBufferOffset = function(blockIndex) {5    return blockIndex * this.blockSize;6};

Using AI Code Generation

1const WpToolkit = require('wp-toolkit');2const path = require('path');3const fs = require('fs');4const wptoolkit = new WpToolkit({5    wpRoot: path.resolve(__dirname, 'wp'),6    wpConfig: path.resolve(__dirname, 'wp-config.php'),7    wpContent: path.resolve(__dirname, 'wp-content')8});9console.log(wptoolkit.getBlockBufferOffset('core/image'));10console.log(wptoolkit.getBlockBufferOffset('core/paragraph'));11console.log(wptoolkit.getBlockBufferOffset('core/heading'));12console.log(wptoolkit.getBlockBufferOffset('core/quote'));13console.log(wptoolkit.getBlockBufferOffset('core/gallery'));14console.log(wptoolkit.getBlockBufferOffset('core/audio'));15console.log(wptoolkit.getBlockBufferOffset('core/video'));16console.log(wptoolkit.getBlockBufferOffset('core/cover'));17console.log(wptoolkit.getBlockBufferOffset('core/file'));18console.log(wptoolkit.getBlockBufferOffset('core/list'));19console.log(wptoolkit.getBlockBufferOffset('core/shortcode'));20console.log(wptoolkit.getBlockBufferOffset('core/archives'));21console.log(wptoolkit.getBlockBufferOffset('core/categories'));22console.log(wptoolkit.getBlockBufferOffset('core/latest-comments'));23console.log(wptoolkit.getBlockBufferOffset('core/latest-posts'));24console.log(wptoolkit.getBlockBufferOffset('core/separator'));25console.log(wptoolkit.getBlockBufferOffset('core/spacer'));26console.log(wptoolkit.getBlockBufferOffset('core/code'));27console.log(wptoolkit.getBlockBufferOffset('core/html'));28console.log(wptoolkit.getBlockBufferOffset('core/preformatted'));29console.log(wptoolkit.getBlockBufferOffset('core/pullquote'));30console.log(wptoolkit.getBlockBuffer

Using AI Code Generation

1const wptools = require('wp-tools');2const blockBuffer = wptools.getBlockBufferOffset('minecraft:stone', 0, 0, 0, 0, 0, 0);3console.log(blockBuffer);4const wptools = require('wp-tools');5const blockBuffer = wptools.getBlockBufferOffset('minecraft:stone', 0, 0, 0, 0, 0, 0);6console.log(blockBuffer);7const wptools = require('wp-tools');8const blockBuffer = wptools.getBlockBufferOffset('minecraft:stone', 0, 0, 0, 0, 0, 0);9console.log(blockBuffer);10const wptools = require('wp-tools');11const blockBuffer = wptools.getBlockBufferOffset('minecraft:stone', 0, 0, 0, 0, 0, 0);12console.log(blockBuffer);13const wptools = require('wp-tools');14const blockBuffer = wptools.getBlockBufferOffset('minecraft:stone', 0, 0, 0, 0, 0, 0);15console.log(blockBuffer);16const wptools = require('wp-tools');17const blockBuffer = wptools.getBlockBufferOffset('minecraft:stone', 0, 0, 0, 0, 0, 0);18console.log(blockBuffer);19const wptools = require('wp-tools');20const blockBuffer = wptools.getBlockBufferOffset('minecraft:stone', 0, 0, 0, 0, 0, 0);21console.log(blockBuffer);22const wptools = require('wp-tools');23const blockBuffer = wptools.getBlockBufferOffset('

Using AI Code Generation

1var wptc = require('wptc');2var blockId = 123;3var bufferOffset = wptc.getBlockBufferOffset(blockId);4console.log("Buffer offset of block " + blockId + " is " + bufferOffset);5var wptc = require('wptc');6var blockId = 123;7var bufferOffset = wptc.getBlockBufferOffset(blockId);8console.log("Buffer offset of block " + blockId + " is " + bufferOffset);9var wptc = require('wptc');10var blockId = 123;11var bufferOffset = wptc.getBlockBufferOffset(blockId);12console.log("Buffer offset of block " + blockId + " is " + bufferOffset);13var wptc = require('wptc');14var blockId = 123;15var bufferOffset = wptc.getBlockBufferOffset(blockId);16console.log("Buffer offset of block " + blockId + " is " + bufferOffset);17var wptc = require('wptc');18var blockId = 123;19var bufferOffset = wptc.getBlockBufferOffset(blockId);20console.log("Buffer offset of block " + blockId + " is " + bufferOffset);21var wptc = require('wptc');22var blockId = 123;23var bufferOffset = wptc.getBlockBufferOffset(blockId);24console.log("Buffer offset of block " + blockId + " is " + bufferOffset);

Using AI Code Generation

1var wptools = require('./wptools.js');2var blockBuffer = wptools.loadBlockBuffer("block00000.dat");3var offset = wptools.getBlockBufferOffset(blockBuffer, "0000000000000000000e9a9c6d7f6a0f0a7b1b8c0ba7a1d1c3a3e3b3d3a3e3b");4console.log(offset);5wptools.closeBlockBuffer(blockBuffer);6var native = require('./build/Release/wptools.node');7exports.loadBlockBuffer = function(path) {8	return native.loadBlockBuffer(path);9}10exports.closeBlockBuffer = function(blockBuffer) {11	native.closeBlockBuffer(blockBuffer);12}13exports.getBlockBufferOffset = function(blockBuffer, hash) {14	return native.getBlockBufferOffset(blockBuffer, hash);15}16var native = require('./native.node');17exports.loadBlockBuffer = function(path) {18	return native.loadBlockBuffer(path);19}20exports.closeBlockBuffer = function(blockBuffer) {21	native.closeBlockBuffer(blockBuffer);22}23exports.getBlockBufferOffset = function(blockBuffer, hash) {24	return native.getBlockBufferOffset(blockBuffer, hash);25}26var native = require('./native.node');27exports.loadBlockBuffer = function(path) {28	return native.loadBlockBuffer(path);29}30exports.closeBlockBuffer = function(blockBuffer) {31	native.closeBlockBuffer(blockBuffer);32}33exports.getBlockBufferOffset = function(blockBuffer, hash) {34	return native.getBlockBufferOffset(blockBuffer, hash

Using AI Code Generation

1var wpt = require('./wpt.js');2var wpt = new wpt();3var block = wpt.getBlockBufferOffset(0);4console.log(block);5var block = wpt.getBlockBufferOffset(1);6console.log(block);7var block = wpt.getBlockBufferOffset(2);8console.log(block);9var block = wpt.getBlockBufferOffset(3);10console.log(block);11var block = wpt.getBlockBufferOffset(4);12console.log(block);13var block = wpt.getBlockBufferOffset(5);14console.log(block);15var block = wpt.getBlockBufferOffset(6);16console.log(block);17var block = wpt.getBlockBufferOffset(7);18console.log(block);19var block = wpt.getBlockBufferOffset(8);20console.log(block);21var block = wpt.getBlockBufferOffset(9);22console.log(block);23var block = wpt.getBlockBufferOffset(10);24console.log(block);25var block = wpt.getBlockBufferOffset(11);26console.log(block);27var block = wpt.getBlockBufferOffset(12);28console.log(block);29var block = wpt.getBlockBufferOffset(13);30console.log(block);31var block = wpt.getBlockBufferOffset(14);32console.log(block);33var block = wpt.getBlockBufferOffset(15);34console.log(block);35var block = wpt.getBlockBufferOffset(16);36console.log(block);37var block = wpt.getBlockBufferOffset(17);38console.log(block);39var block = wpt.getBlockBufferOffset(18);40console.log(block);41var block = wpt.getBlockBufferOffset(19);42console.log(block);43var block = wpt.getBlockBufferOffset(20);44console.log(block);45var block = wpt.getBlockBufferOffset(

Using AI Code Generation

1var wpt = require('./wpt.js');2var wptObj = new wpt();3var block = {4	"blockBuffer": new Buffer(512),5};6block.blockBufferOffset = wptObj.getBlockBufferOffset(block.blockNumber, block.blockSize);7block.blockBuffer.write("Hello World", block.blockBufferOffset);8console.log(block.blockBuffer.toString('utf8', block.blockBufferOffset, block.blockBufferOffset + block.blockSize));9Buffer.write()10Buffer.toString()11Buffer.slice()12Buffer.copy()13Buffer.concat()14Buffer.isEncoding()15Buffer.isBuffer()16Buffer.byteLength()17Buffer.compare()18Buffer.alloc()19Buffer.allocUnsafe()20Buffer.allocUnsafeSlow()21Buffer.from()22Buffer.isEncoding()23Buffer.isBuffer()24Buffer.byteLength()25Buffer.compare()26Buffer.alloc()27Buffer.allocUnsafe()28Buffer.allocUnsafeSlow()29Buffer.from()30Buffer.alloc()31Buffer.allocUnsafe()32Buffer.allocUnsafeSlow()33Buffer.from()34Buffer.alloc()

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.