/** * @licstart The following is the entire license notice for the * JavaScript code in this page * * Copyright 2023 Mozilla Foundation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * @licend The above is the entire license notice for the * JavaScript code in this page */ (function webpackUniversalModuleDefinition(root, factory) { if(typeof exports === 'object' && typeof module === 'object') module.exports = root.pdfjsImageDecoders = factory(); else if(typeof define === 'function' && define.amd) define("pdfjs-dist/image_decoders/pdf.image_decoders", [], () => { return (root.pdfjsImageDecoders = factory()); }); else if(typeof exports === 'object') exports["pdfjs-dist/image_decoders/pdf.image_decoders"] = root.pdfjsImageDecoders = factory(); else root["pdfjs-dist/image_decoders/pdf.image_decoders"] = root.pdfjsImageDecoders = factory(); })(globalThis, () => { return /******/ (() => { // webpackBootstrap /******/ "use strict"; /******/ var __webpack_modules__ = ([ /* 0 */, /* 1 */ /***/ ((__unused_webpack_module, exports) => { Object.defineProperty(exports, "__esModule", ({ value: true })); exports.VerbosityLevel = exports.Util = exports.UnknownErrorException = exports.UnexpectedResponseException = exports.TextRenderingMode = exports.RenderingIntentFlag = exports.PromiseCapability = exports.PermissionFlag = exports.PasswordResponses = exports.PasswordException = exports.PageActionEventType = exports.OPS = exports.MissingPDFException = exports.MAX_IMAGE_SIZE_TO_CACHE = exports.LINE_FACTOR = exports.LINE_DESCENT_FACTOR = exports.InvalidPDFException = exports.ImageKind = exports.IDENTITY_MATRIX = exports.FormatError = exports.FeatureTest = exports.FONT_IDENTITY_MATRIX = exports.DocumentActionEventType = exports.CMapCompressionType = exports.BaseException = exports.BASELINE_FACTOR = exports.AnnotationType = exports.AnnotationReplyType = exports.AnnotationPrefix = exports.AnnotationMode = exports.AnnotationFlag = exports.AnnotationFieldFlag = exports.AnnotationEditorType = exports.AnnotationEditorPrefix = exports.AnnotationEditorParamsType = exports.AnnotationBorderStyleType = exports.AnnotationActionEventType = exports.AbortException = void 0; exports.assert = assert; exports.bytesToString = bytesToString; exports.createValidAbsoluteUrl = createValidAbsoluteUrl; exports.getModificationDate = getModificationDate; exports.getUuid = getUuid; exports.getVerbosityLevel = getVerbosityLevel; exports.info = info; exports.isArrayBuffer = isArrayBuffer; exports.isArrayEqual = isArrayEqual; exports.isNodeJS = void 0; exports.normalizeUnicode = normalizeUnicode; exports.objectFromMap = objectFromMap; exports.objectSize = objectSize; exports.setVerbosityLevel = setVerbosityLevel; exports.shadow = shadow; exports.string32 = string32; exports.stringToBytes = stringToBytes; exports.stringToPDFString = stringToPDFString; exports.stringToUTF8String = stringToUTF8String; exports.unreachable = unreachable; exports.utf8StringToString = utf8StringToString; exports.warn = warn; const isNodeJS = typeof process === "object" && process + "" === "[object process]" && !process.versions.nw && !(process.versions.electron && process.type && process.type !== "browser"); exports.isNodeJS = isNodeJS; const IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0]; exports.IDENTITY_MATRIX = IDENTITY_MATRIX; const FONT_IDENTITY_MATRIX = [0.001, 0, 0, 0.001, 0, 0]; exports.FONT_IDENTITY_MATRIX = FONT_IDENTITY_MATRIX; const MAX_IMAGE_SIZE_TO_CACHE = 10e6; exports.MAX_IMAGE_SIZE_TO_CACHE = MAX_IMAGE_SIZE_TO_CACHE; const LINE_FACTOR = 1.35; exports.LINE_FACTOR = LINE_FACTOR; const LINE_DESCENT_FACTOR = 0.35; exports.LINE_DESCENT_FACTOR = LINE_DESCENT_FACTOR; const BASELINE_FACTOR = LINE_DESCENT_FACTOR / LINE_FACTOR; exports.BASELINE_FACTOR = BASELINE_FACTOR; const RenderingIntentFlag = { ANY: 0x01, DISPLAY: 0x02, PRINT: 0x04, SAVE: 0x08, ANNOTATIONS_FORMS: 0x10, ANNOTATIONS_STORAGE: 0x20, ANNOTATIONS_DISABLE: 0x40, OPLIST: 0x100 }; exports.RenderingIntentFlag = RenderingIntentFlag; const AnnotationMode = { DISABLE: 0, ENABLE: 1, ENABLE_FORMS: 2, ENABLE_STORAGE: 3 }; exports.AnnotationMode = AnnotationMode; const AnnotationEditorPrefix = "pdfjs_internal_editor_"; exports.AnnotationEditorPrefix = AnnotationEditorPrefix; const AnnotationEditorType = { DISABLE: -1, NONE: 0, FREETEXT: 3, STAMP: 13, INK: 15 }; exports.AnnotationEditorType = AnnotationEditorType; const AnnotationEditorParamsType = { RESIZE: 1, CREATE: 2, FREETEXT_SIZE: 11, FREETEXT_COLOR: 12, FREETEXT_OPACITY: 13, INK_COLOR: 21, INK_THICKNESS: 22, INK_OPACITY: 23 }; exports.AnnotationEditorParamsType = AnnotationEditorParamsType; const PermissionFlag = { PRINT: 0x04, MODIFY_CONTENTS: 0x08, COPY: 0x10, MODIFY_ANNOTATIONS: 0x20, FILL_INTERACTIVE_FORMS: 0x100, COPY_FOR_ACCESSIBILITY: 0x200, ASSEMBLE: 0x400, PRINT_HIGH_QUALITY: 0x800 }; exports.PermissionFlag = PermissionFlag; const TextRenderingMode = { FILL: 0, STROKE: 1, FILL_STROKE: 2, INVISIBLE: 3, FILL_ADD_TO_PATH: 4, STROKE_ADD_TO_PATH: 5, FILL_STROKE_ADD_TO_PATH: 6, ADD_TO_PATH: 7, FILL_STROKE_MASK: 3, ADD_TO_PATH_FLAG: 4 }; exports.TextRenderingMode = TextRenderingMode; const ImageKind = { GRAYSCALE_1BPP: 1, RGB_24BPP: 2, RGBA_32BPP: 3 }; exports.ImageKind = ImageKind; const AnnotationType = { TEXT: 1, LINK: 2, FREETEXT: 3, LINE: 4, SQUARE: 5, CIRCLE: 6, POLYGON: 7, POLYLINE: 8, HIGHLIGHT: 9, UNDERLINE: 10, SQUIGGLY: 11, STRIKEOUT: 12, STAMP: 13, CARET: 14, INK: 15, POPUP: 16, FILEATTACHMENT: 17, SOUND: 18, MOVIE: 19, WIDGET: 20, SCREEN: 21, PRINTERMARK: 22, TRAPNET: 23, WATERMARK: 24, THREED: 25, REDACT: 26 }; exports.AnnotationType = AnnotationType; const AnnotationReplyType = { GROUP: "Group", REPLY: "R" }; exports.AnnotationReplyType = AnnotationReplyType; const AnnotationFlag = { INVISIBLE: 0x01, HIDDEN: 0x02, PRINT: 0x04, NOZOOM: 0x08, NOROTATE: 0x10, NOVIEW: 0x20, READONLY: 0x40, LOCKED: 0x80, TOGGLENOVIEW: 0x100, LOCKEDCONTENTS: 0x200 }; exports.AnnotationFlag = AnnotationFlag; const AnnotationFieldFlag = { READONLY: 0x0000001, REQUIRED: 0x0000002, NOEXPORT: 0x0000004, MULTILINE: 0x0001000, PASSWORD: 0x0002000, NOTOGGLETOOFF: 0x0004000, RADIO: 0x0008000, PUSHBUTTON: 0x0010000, COMBO: 0x0020000, EDIT: 0x0040000, SORT: 0x0080000, FILESELECT: 0x0100000, MULTISELECT: 0x0200000, DONOTSPELLCHECK: 0x0400000, DONOTSCROLL: 0x0800000, COMB: 0x1000000, RICHTEXT: 0x2000000, RADIOSINUNISON: 0x2000000, COMMITONSELCHANGE: 0x4000000 }; exports.AnnotationFieldFlag = AnnotationFieldFlag; const AnnotationBorderStyleType = { SOLID: 1, DASHED: 2, BEVELED: 3, INSET: 4, UNDERLINE: 5 }; exports.AnnotationBorderStyleType = AnnotationBorderStyleType; const AnnotationActionEventType = { E: "Mouse Enter", X: "Mouse Exit", D: "Mouse Down", U: "Mouse Up", Fo: "Focus", Bl: "Blur", PO: "PageOpen", PC: "PageClose", PV: "PageVisible", PI: "PageInvisible", K: "Keystroke", F: "Format", V: "Validate", C: "Calculate" }; exports.AnnotationActionEventType = AnnotationActionEventType; const DocumentActionEventType = { WC: "WillClose", WS: "WillSave", DS: "DidSave", WP: "WillPrint", DP: "DidPrint" }; exports.DocumentActionEventType = DocumentActionEventType; const PageActionEventType = { O: "PageOpen", C: "PageClose" }; exports.PageActionEventType = PageActionEventType; const VerbosityLevel = { ERRORS: 0, WARNINGS: 1, INFOS: 5 }; exports.VerbosityLevel = VerbosityLevel; const CMapCompressionType = { NONE: 0, BINARY: 1 }; exports.CMapCompressionType = CMapCompressionType; const OPS = { dependency: 1, setLineWidth: 2, setLineCap: 3, setLineJoin: 4, setMiterLimit: 5, setDash: 6, setRenderingIntent: 7, setFlatness: 8, setGState: 9, save: 10, restore: 11, transform: 12, moveTo: 13, lineTo: 14, curveTo: 15, curveTo2: 16, curveTo3: 17, closePath: 18, rectangle: 19, stroke: 20, closeStroke: 21, fill: 22, eoFill: 23, fillStroke: 24, eoFillStroke: 25, closeFillStroke: 26, closeEOFillStroke: 27, endPath: 28, clip: 29, eoClip: 30, beginText: 31, endText: 32, setCharSpacing: 33, setWordSpacing: 34, setHScale: 35, setLeading: 36, setFont: 37, setTextRenderingMode: 38, setTextRise: 39, moveText: 40, setLeadingMoveText: 41, setTextMatrix: 42, nextLine: 43, showText: 44, showSpacedText: 45, nextLineShowText: 46, nextLineSetSpacingShowText: 47, setCharWidth: 48, setCharWidthAndBounds: 49, setStrokeColorSpace: 50, setFillColorSpace: 51, setStrokeColor: 52, setStrokeColorN: 53, setFillColor: 54, setFillColorN: 55, setStrokeGray: 56, setFillGray: 57, setStrokeRGBColor: 58, setFillRGBColor: 59, setStrokeCMYKColor: 60, setFillCMYKColor: 61, shadingFill: 62, beginInlineImage: 63, beginImageData: 64, endInlineImage: 65, paintXObject: 66, markPoint: 67, markPointProps: 68, beginMarkedContent: 69, beginMarkedContentProps: 70, endMarkedContent: 71, beginCompat: 72, endCompat: 73, paintFormXObjectBegin: 74, paintFormXObjectEnd: 75, beginGroup: 76, endGroup: 77, beginAnnotation: 80, endAnnotation: 81, paintImageMaskXObject: 83, paintImageMaskXObjectGroup: 84, paintImageXObject: 85, paintInlineImageXObject: 86, paintInlineImageXObjectGroup: 87, paintImageXObjectRepeat: 88, paintImageMaskXObjectRepeat: 89, paintSolidColorImageMask: 90, constructPath: 91 }; exports.OPS = OPS; const PasswordResponses = { NEED_PASSWORD: 1, INCORRECT_PASSWORD: 2 }; exports.PasswordResponses = PasswordResponses; let verbosity = VerbosityLevel.WARNINGS; function setVerbosityLevel(level) { if (Number.isInteger(level)) { verbosity = level; } } function getVerbosityLevel() { return verbosity; } function info(msg) { if (verbosity >= VerbosityLevel.INFOS) { console.log(`Info: ${msg}`); } } function warn(msg) { if (verbosity >= VerbosityLevel.WARNINGS) { console.log(`Warning: ${msg}`); } } function unreachable(msg) { throw new Error(msg); } function assert(cond, msg) { if (!cond) { unreachable(msg); } } function _isValidProtocol(url) { switch (url?.protocol) { case "http:": case "https:": case "ftp:": case "mailto:": case "tel:": return true; default: return false; } } function createValidAbsoluteUrl(url, baseUrl = null, options = null) { if (!url) { return null; } try { if (options && typeof url === "string") { if (options.addDefaultProtocol && url.startsWith("www.")) { const dots = url.match(/\./g); if (dots?.length >= 2) { url = `http://${url}`; } } if (options.tryConvertEncoding) { try { url = stringToUTF8String(url); } catch {} } } const absoluteUrl = baseUrl ? new URL(url, baseUrl) : new URL(url); if (_isValidProtocol(absoluteUrl)) { return absoluteUrl; } } catch {} return null; } function shadow(obj, prop, value, nonSerializable = false) { Object.defineProperty(obj, prop, { value, enumerable: !nonSerializable, configurable: true, writable: false }); return value; } const BaseException = function BaseExceptionClosure() { function BaseException(message, name) { if (this.constructor === BaseException) { unreachable("Cannot initialize BaseException."); } this.message = message; this.name = name; } BaseException.prototype = new Error(); BaseException.constructor = BaseException; return BaseException; }(); exports.BaseException = BaseException; class PasswordException extends BaseException { constructor(msg, code) { super(msg, "PasswordException"); this.code = code; } } exports.PasswordException = PasswordException; class UnknownErrorException extends BaseException { constructor(msg, details) { super(msg, "UnknownErrorException"); this.details = details; } } exports.UnknownErrorException = UnknownErrorException; class InvalidPDFException extends BaseException { constructor(msg) { super(msg, "InvalidPDFException"); } } exports.InvalidPDFException = InvalidPDFException; class MissingPDFException extends BaseException { constructor(msg) { super(msg, "MissingPDFException"); } } exports.MissingPDFException = MissingPDFException; class UnexpectedResponseException extends BaseException { constructor(msg, status) { super(msg, "UnexpectedResponseException"); this.status = status; } } exports.UnexpectedResponseException = UnexpectedResponseException; class FormatError extends BaseException { constructor(msg) { super(msg, "FormatError"); } } exports.FormatError = FormatError; class AbortException extends BaseException { constructor(msg) { super(msg, "AbortException"); } } exports.AbortException = AbortException; function bytesToString(bytes) { if (typeof bytes !== "object" || bytes?.length === undefined) { unreachable("Invalid argument for bytesToString"); } const length = bytes.length; const MAX_ARGUMENT_COUNT = 8192; if (length < MAX_ARGUMENT_COUNT) { return String.fromCharCode.apply(null, bytes); } const strBuf = []; for (let i = 0; i < length; i += MAX_ARGUMENT_COUNT) { const chunkEnd = Math.min(i + MAX_ARGUMENT_COUNT, length); const chunk = bytes.subarray(i, chunkEnd); strBuf.push(String.fromCharCode.apply(null, chunk)); } return strBuf.join(""); } function stringToBytes(str) { if (typeof str !== "string") { unreachable("Invalid argument for stringToBytes"); } const length = str.length; const bytes = new Uint8Array(length); for (let i = 0; i < length; ++i) { bytes[i] = str.charCodeAt(i) & 0xff; } return bytes; } function string32(value) { return String.fromCharCode(value >> 24 & 0xff, value >> 16 & 0xff, value >> 8 & 0xff, value & 0xff); } function objectSize(obj) { return Object.keys(obj).length; } function objectFromMap(map) { const obj = Object.create(null); for (const [key, value] of map) { obj[key] = value; } return obj; } function isLittleEndian() { const buffer8 = new Uint8Array(4); buffer8[0] = 1; const view32 = new Uint32Array(buffer8.buffer, 0, 1); return view32[0] === 1; } function isEvalSupported() { try { new Function(""); return true; } catch { return false; } } class FeatureTest { static get isLittleEndian() { return shadow(this, "isLittleEndian", isLittleEndian()); } static get isEvalSupported() { return shadow(this, "isEvalSupported", isEvalSupported()); } static get isOffscreenCanvasSupported() { return shadow(this, "isOffscreenCanvasSupported", typeof OffscreenCanvas !== "undefined"); } static get platform() { if (typeof navigator === "undefined") { return shadow(this, "platform", { isWin: false, isMac: false }); } return shadow(this, "platform", { isWin: navigator.platform.includes("Win"), isMac: navigator.platform.includes("Mac") }); } static get isCSSRoundSupported() { return shadow(this, "isCSSRoundSupported", globalThis.CSS?.supports?.("width: round(1.5px, 1px)")); } } exports.FeatureTest = FeatureTest; const hexNumbers = [...Array(256).keys()].map(n => n.toString(16).padStart(2, "0")); class Util { static makeHexColor(r, g, b) { return `#${hexNumbers[r]}${hexNumbers[g]}${hexNumbers[b]}`; } static scaleMinMax(transform, minMax) { let temp; if (transform[0]) { if (transform[0] < 0) { temp = minMax[0]; minMax[0] = minMax[1]; minMax[1] = temp; } minMax[0] *= transform[0]; minMax[1] *= transform[0]; if (transform[3] < 0) { temp = minMax[2]; minMax[2] = minMax[3]; minMax[3] = temp; } minMax[2] *= transform[3]; minMax[3] *= transform[3]; } else { temp = minMax[0]; minMax[0] = minMax[2]; minMax[2] = temp; temp = minMax[1]; minMax[1] = minMax[3]; minMax[3] = temp; if (transform[1] < 0) { temp = minMax[2]; minMax[2] = minMax[3]; minMax[3] = temp; } minMax[2] *= transform[1]; minMax[3] *= transform[1]; if (transform[2] < 0) { temp = minMax[0]; minMax[0] = minMax[1]; minMax[1] = temp; } minMax[0] *= transform[2]; minMax[1] *= transform[2]; } minMax[0] += transform[4]; minMax[1] += transform[4]; minMax[2] += transform[5]; minMax[3] += transform[5]; } static transform(m1, m2) { return [m1[0] * m2[0] + m1[2] * m2[1], m1[1] * m2[0] + m1[3] * m2[1], m1[0] * m2[2] + m1[2] * m2[3], m1[1] * m2[2] + m1[3] * m2[3], m1[0] * m2[4] + m1[2] * m2[5] + m1[4], m1[1] * m2[4] + m1[3] * m2[5] + m1[5]]; } static applyTransform(p, m) { const xt = p[0] * m[0] + p[1] * m[2] + m[4]; const yt = p[0] * m[1] + p[1] * m[3] + m[5]; return [xt, yt]; } static applyInverseTransform(p, m) { const d = m[0] * m[3] - m[1] * m[2]; const xt = (p[0] * m[3] - p[1] * m[2] + m[2] * m[5] - m[4] * m[3]) / d; const yt = (-p[0] * m[1] + p[1] * m[0] + m[4] * m[1] - m[5] * m[0]) / d; return [xt, yt]; } static getAxialAlignedBoundingBox(r, m) { const p1 = this.applyTransform(r, m); const p2 = this.applyTransform(r.slice(2, 4), m); const p3 = this.applyTransform([r[0], r[3]], m); const p4 = this.applyTransform([r[2], r[1]], m); return [Math.min(p1[0], p2[0], p3[0], p4[0]), Math.min(p1[1], p2[1], p3[1], p4[1]), Math.max(p1[0], p2[0], p3[0], p4[0]), Math.max(p1[1], p2[1], p3[1], p4[1])]; } static inverseTransform(m) { const d = m[0] * m[3] - m[1] * m[2]; return [m[3] / d, -m[1] / d, -m[2] / d, m[0] / d, (m[2] * m[5] - m[4] * m[3]) / d, (m[4] * m[1] - m[5] * m[0]) / d]; } static singularValueDecompose2dScale(m) { const transpose = [m[0], m[2], m[1], m[3]]; const a = m[0] * transpose[0] + m[1] * transpose[2]; const b = m[0] * transpose[1] + m[1] * transpose[3]; const c = m[2] * transpose[0] + m[3] * transpose[2]; const d = m[2] * transpose[1] + m[3] * transpose[3]; const first = (a + d) / 2; const second = Math.sqrt((a + d) ** 2 - 4 * (a * d - c * b)) / 2; const sx = first + second || 1; const sy = first - second || 1; return [Math.sqrt(sx), Math.sqrt(sy)]; } static normalizeRect(rect) { const r = rect.slice(0); if (rect[0] > rect[2]) { r[0] = rect[2]; r[2] = rect[0]; } if (rect[1] > rect[3]) { r[1] = rect[3]; r[3] = rect[1]; } return r; } static intersect(rect1, rect2) { const xLow = Math.max(Math.min(rect1[0], rect1[2]), Math.min(rect2[0], rect2[2])); const xHigh = Math.min(Math.max(rect1[0], rect1[2]), Math.max(rect2[0], rect2[2])); if (xLow > xHigh) { return null; } const yLow = Math.max(Math.min(rect1[1], rect1[3]), Math.min(rect2[1], rect2[3])); const yHigh = Math.min(Math.max(rect1[1], rect1[3]), Math.max(rect2[1], rect2[3])); if (yLow > yHigh) { return null; } return [xLow, yLow, xHigh, yHigh]; } static bezierBoundingBox(x0, y0, x1, y1, x2, y2, x3, y3) { const tvalues = [], bounds = [[], []]; let a, b, c, t, t1, t2, b2ac, sqrtb2ac; for (let i = 0; i < 2; ++i) { if (i === 0) { b = 6 * x0 - 12 * x1 + 6 * x2; a = -3 * x0 + 9 * x1 - 9 * x2 + 3 * x3; c = 3 * x1 - 3 * x0; } else { b = 6 * y0 - 12 * y1 + 6 * y2; a = -3 * y0 + 9 * y1 - 9 * y2 + 3 * y3; c = 3 * y1 - 3 * y0; } if (Math.abs(a) < 1e-12) { if (Math.abs(b) < 1e-12) { continue; } t = -c / b; if (0 < t && t < 1) { tvalues.push(t); } continue; } b2ac = b * b - 4 * c * a; sqrtb2ac = Math.sqrt(b2ac); if (b2ac < 0) { continue; } t1 = (-b + sqrtb2ac) / (2 * a); if (0 < t1 && t1 < 1) { tvalues.push(t1); } t2 = (-b - sqrtb2ac) / (2 * a); if (0 < t2 && t2 < 1) { tvalues.push(t2); } } let j = tvalues.length, mt; const jlen = j; while (j--) { t = tvalues[j]; mt = 1 - t; bounds[0][j] = mt * mt * mt * x0 + 3 * mt * mt * t * x1 + 3 * mt * t * t * x2 + t * t * t * x3; bounds[1][j] = mt * mt * mt * y0 + 3 * mt * mt * t * y1 + 3 * mt * t * t * y2 + t * t * t * y3; } bounds[0][jlen] = x0; bounds[1][jlen] = y0; bounds[0][jlen + 1] = x3; bounds[1][jlen + 1] = y3; bounds[0].length = bounds[1].length = jlen + 2; return [Math.min(...bounds[0]), Math.min(...bounds[1]), Math.max(...bounds[0]), Math.max(...bounds[1])]; } } exports.Util = Util; const PDFStringTranslateTable = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x2d8, 0x2c7, 0x2c6, 0x2d9, 0x2dd, 0x2db, 0x2da, 0x2dc, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x2022, 0x2020, 0x2021, 0x2026, 0x2014, 0x2013, 0x192, 0x2044, 0x2039, 0x203a, 0x2212, 0x2030, 0x201e, 0x201c, 0x201d, 0x2018, 0x2019, 0x201a, 0x2122, 0xfb01, 0xfb02, 0x141, 0x152, 0x160, 0x178, 0x17d, 0x131, 0x142, 0x153, 0x161, 0x17e, 0, 0x20ac]; function stringToPDFString(str) { if (str[0] >= "\xEF") { let encoding; if (str[0] === "\xFE" && str[1] === "\xFF") { encoding = "utf-16be"; } else if (str[0] === "\xFF" && str[1] === "\xFE") { encoding = "utf-16le"; } else if (str[0] === "\xEF" && str[1] === "\xBB" && str[2] === "\xBF") { encoding = "utf-8"; } if (encoding) { try { const decoder = new TextDecoder(encoding, { fatal: true }); const buffer = stringToBytes(str); return decoder.decode(buffer); } catch (ex) { warn(`stringToPDFString: "${ex}".`); } } } const strBuf = []; for (let i = 0, ii = str.length; i < ii; i++) { const code = PDFStringTranslateTable[str.charCodeAt(i)]; strBuf.push(code ? String.fromCharCode(code) : str.charAt(i)); } return strBuf.join(""); } function stringToUTF8String(str) { return decodeURIComponent(escape(str)); } function utf8StringToString(str) { return unescape(encodeURIComponent(str)); } function isArrayBuffer(v) { return typeof v === "object" && v?.byteLength !== undefined; } function isArrayEqual(arr1, arr2) { if (arr1.length !== arr2.length) { return false; } for (let i = 0, ii = arr1.length; i < ii; i++) { if (arr1[i] !== arr2[i]) { return false; } } return true; } function getModificationDate(date = new Date()) { const buffer = [date.getUTCFullYear().toString(), (date.getUTCMonth() + 1).toString().padStart(2, "0"), date.getUTCDate().toString().padStart(2, "0"), date.getUTCHours().toString().padStart(2, "0"), date.getUTCMinutes().toString().padStart(2, "0"), date.getUTCSeconds().toString().padStart(2, "0")]; return buffer.join(""); } class PromiseCapability { #settled = false; constructor() { this.promise = new Promise((resolve, reject) => { this.resolve = data => { this.#settled = true; resolve(data); }; this.reject = reason => { this.#settled = true; reject(reason); }; }); } get settled() { return this.#settled; } } exports.PromiseCapability = PromiseCapability; let NormalizeRegex = null; let NormalizationMap = null; function normalizeUnicode(str) { if (!NormalizeRegex) { NormalizeRegex = /([\u00a0\u00b5\u037e\u0eb3\u2000-\u200a\u202f\u2126\ufb00-\ufb04\ufb06\ufb20-\ufb36\ufb38-\ufb3c\ufb3e\ufb40-\ufb41\ufb43-\ufb44\ufb46-\ufba1\ufba4-\ufba9\ufbae-\ufbb1\ufbd3-\ufbdc\ufbde-\ufbe7\ufbea-\ufbf8\ufbfc-\ufbfd\ufc00-\ufc5d\ufc64-\ufcf1\ufcf5-\ufd3d\ufd88\ufdf4\ufdfa-\ufdfb\ufe71\ufe77\ufe79\ufe7b\ufe7d]+)|(\ufb05+)/gu; NormalizationMap = new Map([["ſt", "ſt"]]); } return str.replaceAll(NormalizeRegex, (_, p1, p2) => { return p1 ? p1.normalize("NFKC") : NormalizationMap.get(p2); }); } function getUuid() { if (typeof crypto !== "undefined" && typeof crypto?.randomUUID === "function") { return crypto.randomUUID(); } const buf = new Uint8Array(32); if (typeof crypto !== "undefined" && typeof crypto?.getRandomValues === "function") { crypto.getRandomValues(buf); } else { for (let i = 0; i < 32; i++) { buf[i] = Math.floor(Math.random() * 255); } } return bytesToString(buf); } const AnnotationPrefix = "pdfjs_internal_id_"; exports.AnnotationPrefix = AnnotationPrefix; /***/ }), /* 2 */ /***/ ((__unused_webpack_module, exports, __w_pdfjs_require__) => { Object.defineProperty(exports, "__esModule", ({ value: true })); exports.Jbig2Image = void 0; var _util = __w_pdfjs_require__(1); var _core_utils = __w_pdfjs_require__(3); var _arithmetic_decoder = __w_pdfjs_require__(6); var _ccitt = __w_pdfjs_require__(7); class Jbig2Error extends _util.BaseException { constructor(msg) { super(`JBIG2 error: ${msg}`, "Jbig2Error"); } } class ContextCache { getContexts(id) { if (id in this) { return this[id]; } return this[id] = new Int8Array(1 << 16); } } class DecodingContext { constructor(data, start, end) { this.data = data; this.start = start; this.end = end; } get decoder() { const decoder = new _arithmetic_decoder.ArithmeticDecoder(this.data, this.start, this.end); return (0, _util.shadow)(this, "decoder", decoder); } get contextCache() { const cache = new ContextCache(); return (0, _util.shadow)(this, "contextCache", cache); } } const MAX_INT_32 = 2 ** 31 - 1; const MIN_INT_32 = -(2 ** 31); function decodeInteger(contextCache, procedure, decoder) { const contexts = contextCache.getContexts(procedure); let prev = 1; function readBits(length) { let v = 0; for (let i = 0; i < length; i++) { const bit = decoder.readBit(contexts, prev); prev = prev < 256 ? prev << 1 | bit : (prev << 1 | bit) & 511 | 256; v = v << 1 | bit; } return v >>> 0; } const sign = readBits(1); const value = readBits(1) ? readBits(1) ? readBits(1) ? readBits(1) ? readBits(1) ? readBits(32) + 4436 : readBits(12) + 340 : readBits(8) + 84 : readBits(6) + 20 : readBits(4) + 4 : readBits(2); let signedValue; if (sign === 0) { signedValue = value; } else if (value > 0) { signedValue = -value; } if (signedValue >= MIN_INT_32 && signedValue <= MAX_INT_32) { return signedValue; } return null; } function decodeIAID(contextCache, decoder, codeLength) { const contexts = contextCache.getContexts("IAID"); let prev = 1; for (let i = 0; i < codeLength; i++) { const bit = decoder.readBit(contexts, prev); prev = prev << 1 | bit; } if (codeLength < 31) { return prev & (1 << codeLength) - 1; } return prev & 0x7fffffff; } const SegmentTypes = ["SymbolDictionary", null, null, null, "IntermediateTextRegion", null, "ImmediateTextRegion", "ImmediateLosslessTextRegion", null, null, null, null, null, null, null, null, "PatternDictionary", null, null, null, "IntermediateHalftoneRegion", null, "ImmediateHalftoneRegion", "ImmediateLosslessHalftoneRegion", null, null, null, null, null, null, null, null, null, null, null, null, "IntermediateGenericRegion", null, "ImmediateGenericRegion", "ImmediateLosslessGenericRegion", "IntermediateGenericRefinementRegion", null, "ImmediateGenericRefinementRegion", "ImmediateLosslessGenericRefinementRegion", null, null, null, null, "PageInformation", "EndOfPage", "EndOfStripe", "EndOfFile", "Profiles", "Tables", null, null, null, null, null, null, null, null, "Extension"]; const CodingTemplates = [[{ x: -1, y: -2 }, { x: 0, y: -2 }, { x: 1, y: -2 }, { x: -2, y: -1 }, { x: -1, y: -1 }, { x: 0, y: -1 }, { x: 1, y: -1 }, { x: 2, y: -1 }, { x: -4, y: 0 }, { x: -3, y: 0 }, { x: -2, y: 0 }, { x: -1, y: 0 }], [{ x: -1, y: -2 }, { x: 0, y: -2 }, { x: 1, y: -2 }, { x: 2, y: -2 }, { x: -2, y: -1 }, { x: -1, y: -1 }, { x: 0, y: -1 }, { x: 1, y: -1 }, { x: 2, y: -1 }, { x: -3, y: 0 }, { x: -2, y: 0 }, { x: -1, y: 0 }], [{ x: -1, y: -2 }, { x: 0, y: -2 }, { x: 1, y: -2 }, { x: -2, y: -1 }, { x: -1, y: -1 }, { x: 0, y: -1 }, { x: 1, y: -1 }, { x: -2, y: 0 }, { x: -1, y: 0 }], [{ x: -3, y: -1 }, { x: -2, y: -1 }, { x: -1, y: -1 }, { x: 0, y: -1 }, { x: 1, y: -1 }, { x: -4, y: 0 }, { x: -3, y: 0 }, { x: -2, y: 0 }, { x: -1, y: 0 }]]; const RefinementTemplates = [{ coding: [{ x: 0, y: -1 }, { x: 1, y: -1 }, { x: -1, y: 0 }], reference: [{ x: 0, y: -1 }, { x: 1, y: -1 }, { x: -1, y: 0 }, { x: 0, y: 0 }, { x: 1, y: 0 }, { x: -1, y: 1 }, { x: 0, y: 1 }, { x: 1, y: 1 }] }, { coding: [{ x: -1, y: -1 }, { x: 0, y: -1 }, { x: 1, y: -1 }, { x: -1, y: 0 }], reference: [{ x: 0, y: -1 }, { x: -1, y: 0 }, { x: 0, y: 0 }, { x: 1, y: 0 }, { x: 0, y: 1 }, { x: 1, y: 1 }] }]; const ReusedContexts = [0x9b25, 0x0795, 0x00e5, 0x0195]; const RefinementReusedContexts = [0x0020, 0x0008]; function decodeBitmapTemplate0(width, height, decodingContext) { const decoder = decodingContext.decoder; const contexts = decodingContext.contextCache.getContexts("GB"); const bitmap = []; let contextLabel, i, j, pixel, row, row1, row2; const OLD_PIXEL_MASK = 0x7bf7; for (i = 0; i < height; i++) { row = bitmap[i] = new Uint8Array(width); row1 = i < 1 ? row : bitmap[i - 1]; row2 = i < 2 ? row : bitmap[i - 2]; contextLabel = row2[0] << 13 | row2[1] << 12 | row2[2] << 11 | row1[0] << 7 | row1[1] << 6 | row1[2] << 5 | row1[3] << 4; for (j = 0; j < width; j++) { row[j] = pixel = decoder.readBit(contexts, contextLabel); contextLabel = (contextLabel & OLD_PIXEL_MASK) << 1 | (j + 3 < width ? row2[j + 3] << 11 : 0) | (j + 4 < width ? row1[j + 4] << 4 : 0) | pixel; } } return bitmap; } function decodeBitmap(mmr, width, height, templateIndex, prediction, skip, at, decodingContext) { if (mmr) { const input = new Reader(decodingContext.data, decodingContext.start, decodingContext.end); return decodeMMRBitmap(input, width, height, false); } if (templateIndex === 0 && !skip && !prediction && at.length === 4 && at[0].x === 3 && at[0].y === -1 && at[1].x === -3 && at[1].y === -1 && at[2].x === 2 && at[2].y === -2 && at[3].x === -2 && at[3].y === -2) { return decodeBitmapTemplate0(width, height, decodingContext); } const useskip = !!skip; const template = CodingTemplates[templateIndex].concat(at); template.sort(function (a, b) { return a.y - b.y || a.x - b.x; }); const templateLength = template.length; const templateX = new Int8Array(templateLength); const templateY = new Int8Array(templateLength); const changingTemplateEntries = []; let reuseMask = 0, minX = 0, maxX = 0, minY = 0; let c, k; for (k = 0; k < templateLength; k++) { templateX[k] = template[k].x; templateY[k] = template[k].y; minX = Math.min(minX, template[k].x); maxX = Math.max(maxX, template[k].x); minY = Math.min(minY, template[k].y); if (k < templateLength - 1 && template[k].y === template[k + 1].y && template[k].x === template[k + 1].x - 1) { reuseMask |= 1 << templateLength - 1 - k; } else { changingTemplateEntries.push(k); } } const changingEntriesLength = changingTemplateEntries.length; const changingTemplateX = new Int8Array(changingEntriesLength); const changingTemplateY = new Int8Array(changingEntriesLength); const changingTemplateBit = new Uint16Array(changingEntriesLength); for (c = 0; c < changingEntriesLength; c++) { k = changingTemplateEntries[c]; changingTemplateX[c] = template[k].x; changingTemplateY[c] = template[k].y; changingTemplateBit[c] = 1 << templateLength - 1 - k; } const sbb_left = -minX; const sbb_top = -minY; const sbb_right = width - maxX; const pseudoPixelContext = ReusedContexts[templateIndex]; let row = new Uint8Array(width); const bitmap = []; const decoder = decodingContext.decoder; const contexts = decodingContext.contextCache.getContexts("GB"); let ltp = 0, j, i0, j0, contextLabel = 0, bit, shift; for (let i = 0; i < height; i++) { if (prediction) { const sltp = decoder.readBit(contexts, pseudoPixelContext); ltp ^= sltp; if (ltp) { bitmap.push(row); continue; } } row = new Uint8Array(row); bitmap.push(row); for (j = 0; j < width; j++) { if (useskip && skip[i][j]) { row[j] = 0; continue; } if (j >= sbb_left && j < sbb_right && i >= sbb_top) { contextLabel = contextLabel << 1 & reuseMask; for (k = 0; k < changingEntriesLength; k++) { i0 = i + changingTemplateY[k]; j0 = j + changingTemplateX[k]; bit = bitmap[i0][j0]; if (bit) { bit = changingTemplateBit[k]; contextLabel |= bit; } } } else { contextLabel = 0; shift = templateLength - 1; for (k = 0; k < templateLength; k++, shift--) { j0 = j + templateX[k]; if (j0 >= 0 && j0 < width) { i0 = i + templateY[k]; if (i0 >= 0) { bit = bitmap[i0][j0]; if (bit) { contextLabel |= bit << shift; } } } } } const pixel = decoder.readBit(contexts, contextLabel); row[j] = pixel; } } return bitmap; } function decodeRefinement(width, height, templateIndex, referenceBitmap, offsetX, offsetY, prediction, at, decodingContext) { let codingTemplate = RefinementTemplates[templateIndex].coding; if (templateIndex === 0) { codingTemplate = codingTemplate.concat([at[0]]); } const codingTemplateLength = codingTemplate.length; const codingTemplateX = new Int32Array(codingTemplateLength); const codingTemplateY = new Int32Array(codingTemplateLength); let k; for (k = 0; k < codingTemplateLength; k++) { codingTemplateX[k] = codingTemplate[k].x; codingTemplateY[k] = codingTemplate[k].y; } let referenceTemplate = RefinementTemplates[templateIndex].reference; if (templateIndex === 0) { referenceTemplate = referenceTemplate.concat([at[1]]); } const referenceTemplateLength = referenceTemplate.length; const referenceTemplateX = new Int32Array(referenceTemplateLength); const referenceTemplateY = new Int32Array(referenceTemplateLength); for (k = 0; k < referenceTemplateLength; k++) { referenceTemplateX[k] = referenceTemplate[k].x; referenceTemplateY[k] = referenceTemplate[k].y; } const referenceWidth = referenceBitmap[0].length; const referenceHeight = referenceBitmap.length; const pseudoPixelContext = RefinementReusedContexts[templateIndex]; const bitmap = []; const decoder = decodingContext.decoder; const contexts = decodingContext.contextCache.getContexts("GR"); let ltp = 0; for (let i = 0; i < height; i++) { if (prediction) { const sltp = decoder.readBit(contexts, pseudoPixelContext); ltp ^= sltp; if (ltp) { throw new Jbig2Error("prediction is not supported"); } } const row = new Uint8Array(width); bitmap.push(row); for (let j = 0; j < width; j++) { let i0, j0; let contextLabel = 0; for (k = 0; k < codingTemplateLength; k++) { i0 = i + codingTemplateY[k]; j0 = j + codingTemplateX[k]; if (i0 < 0 || j0 < 0 || j0 >= width) { contextLabel <<= 1; } else { contextLabel = contextLabel << 1 | bitmap[i0][j0]; } } for (k = 0; k < referenceTemplateLength; k++) { i0 = i + referenceTemplateY[k] - offsetY; j0 = j + referenceTemplateX[k] - offsetX; if (i0 < 0 || i0 >= referenceHeight || j0 < 0 || j0 >= referenceWidth) { contextLabel <<= 1; } else { contextLabel = contextLabel << 1 | referenceBitmap[i0][j0]; } } const pixel = decoder.readBit(contexts, contextLabel); row[j] = pixel; } } return bitmap; } function decodeSymbolDictionary(huffman, refinement, symbols, numberOfNewSymbols, numberOfExportedSymbols, huffmanTables, templateIndex, at, refinementTemplateIndex, refinementAt, decodingContext, huffmanInput) { if (huffman && refinement) { throw new Jbig2Error("symbol refinement with Huffman is not supported"); } const newSymbols = []; let currentHeight = 0; let symbolCodeLength = (0, _core_utils.log2)(symbols.length + numberOfNewSymbols); const decoder = decodingContext.decoder; const contextCache = decodingContext.contextCache; let tableB1, symbolWidths; if (huffman) { tableB1 = getStandardTable(1); symbolWidths = []; symbolCodeLength = Math.max(symbolCodeLength, 1); } while (newSymbols.length < numberOfNewSymbols) { const deltaHeight = huffman ? huffmanTables.tableDeltaHeight.decode(huffmanInput) : decodeInteger(contextCache, "IADH", decoder); currentHeight += deltaHeight; let currentWidth = 0, totalWidth = 0; const firstSymbol = huffman ? symbolWidths.length : 0; while (true) { const deltaWidth = huffman ? huffmanTables.tableDeltaWidth.decode(huffmanInput) : decodeInteger(contextCache, "IADW", decoder); if (deltaWidth === null) { break; } currentWidth += deltaWidth; totalWidth += currentWidth; let bitmap; if (refinement) { const numberOfInstances = decodeInteger(contextCache, "IAAI", decoder); if (numberOfInstances > 1) { bitmap = decodeTextRegion(huffman, refinement, currentWidth, currentHeight, 0, numberOfInstances, 1, symbols.concat(newSymbols), symbolCodeLength, 0, 0, 1, 0, huffmanTables, refinementTemplateIndex, refinementAt, decodingContext, 0, huffmanInput); } else { const symbolId = decodeIAID(contextCache, decoder, symbolCodeLength); const rdx = decodeInteger(contextCache, "IARDX", decoder); const rdy = decodeInteger(contextCache, "IARDY", decoder); const symbol = symbolId < symbols.length ? symbols[symbolId] : newSymbols[symbolId - symbols.length]; bitmap = decodeRefinement(currentWidth, currentHeight, refinementTemplateIndex, symbol, rdx, rdy, false, refinementAt, decodingContext); } newSymbols.push(bitmap); } else if (huffman) { symbolWidths.push(currentWidth); } else { bitmap = decodeBitmap(false, currentWidth, currentHeight, templateIndex, false, null, at, decodingContext); newSymbols.push(bitmap); } } if (huffman && !refinement) { const bitmapSize = huffmanTables.tableBitmapSize.decode(huffmanInput); huffmanInput.byteAlign(); let collectiveBitmap; if (bitmapSize === 0) { collectiveBitmap = readUncompressedBitmap(huffmanInput, totalWidth, currentHeight); } else { const originalEnd = huffmanInput.end; const bitmapEnd = huffmanInput.position + bitmapSize; huffmanInput.end = bitmapEnd; collectiveBitmap = decodeMMRBitmap(huffmanInput, totalWidth, currentHeight, false); huffmanInput.end = originalEnd; huffmanInput.position = bitmapEnd; } const numberOfSymbolsDecoded = symbolWidths.length; if (firstSymbol === numberOfSymbolsDecoded - 1) { newSymbols.push(collectiveBitmap); } else { let i, y, xMin = 0, xMax, bitmapWidth, symbolBitmap; for (i = firstSymbol; i < numberOfSymbolsDecoded; i++) { bitmapWidth = symbolWidths[i]; xMax = xMin + bitmapWidth; symbolBitmap = []; for (y = 0; y < currentHeight; y++) { symbolBitmap.push(collectiveBitmap[y].subarray(xMin, xMax)); } newSymbols.push(symbolBitmap); xMin = xMax; } } } } const exportedSymbols = [], flags = []; let currentFlag = false, i, ii; const totalSymbolsLength = symbols.length + numberOfNewSymbols; while (flags.length < totalSymbolsLength) { let runLength = huffman ? tableB1.decode(huffmanInput) : decodeInteger(contextCache, "IAEX", decoder); while (runLength--) { flags.push(currentFlag); } currentFlag = !currentFlag; } for (i = 0, ii = symbols.length; i < ii; i++) { if (flags[i]) { exportedSymbols.push(symbols[i]); } } for (let j = 0; j < numberOfNewSymbols; i++, j++) { if (flags[i]) { exportedSymbols.push(newSymbols[j]); } } return exportedSymbols; } function decodeTextRegion(huffman, refinement, width, height, defaultPixelValue, numberOfSymbolInstances, stripSize, inputSymbols, symbolCodeLength, transposed, dsOffset, referenceCorner, combinationOperator, huffmanTables, refinementTemplateIndex, refinementAt, decodingContext, logStripSize, huffmanInput) { if (huffman && refinement) { throw new Jbig2Error("refinement with Huffman is not supported"); } const bitmap = []; let i, row; for (i = 0; i < height; i++) { row = new Uint8Array(width); if (defaultPixelValue) { for (let j = 0; j < width; j++) { row[j] = defaultPixelValue; } } bitmap.push(row); } const decoder = decodingContext.decoder; const contextCache = decodingContext.contextCache; let stripT = huffman ? -huffmanTables.tableDeltaT.decode(huffmanInput) : -decodeInteger(contextCache, "IADT", decoder); let firstS = 0; i = 0; while (i < numberOfSymbolInstances) { const deltaT = huffman ? huffmanTables.tableDeltaT.decode(huffmanInput) : decodeInteger(contextCache, "IADT", decoder); stripT += deltaT; const deltaFirstS = huffman ? huffmanTables.tableFirstS.decode(huffmanInput) : decodeInteger(contextCache, "IAFS", decoder); firstS += deltaFirstS; let currentS = firstS; do { let currentT = 0; if (stripSize > 1) { currentT = huffman ? huffmanInput.readBits(logStripSize) : decodeInteger(contextCache, "IAIT", decoder); } const t = stripSize * stripT + currentT; const symbolId = huffman ? huffmanTables.symbolIDTable.decode(huffmanInput) : decodeIAID(contextCache, decoder, symbolCodeLength); const applyRefinement = refinement && (huffman ? huffmanInput.readBit() : decodeInteger(contextCache, "IARI", decoder)); let symbolBitmap = inputSymbols[symbolId]; let symbolWidth = symbolBitmap[0].length; let symbolHeight = symbolBitmap.length; if (applyRefinement) { const rdw = decodeInteger(contextCache, "IARDW", decoder); const rdh = decodeInteger(contextCache, "IARDH", decoder); const rdx = decodeInteger(contextCache, "IARDX", decoder); const rdy = decodeInteger(contextCache, "IARDY", decoder); symbolWidth += rdw; symbolHeight += rdh; symbolBitmap = decodeRefinement(symbolWidth, symbolHeight, refinementTemplateIndex, symbolBitmap, (rdw >> 1) + rdx, (rdh >> 1) + rdy, false, refinementAt, decodingContext); } const offsetT = t - (referenceCorner & 1 ? 0 : symbolHeight - 1); const offsetS = currentS - (referenceCorner & 2 ? symbolWidth - 1 : 0); let s2, t2, symbolRow; if (transposed) { for (s2 = 0; s2 < symbolHeight; s2++) { row = bitmap[offsetS + s2]; if (!row) { continue; } symbolRow = symbolBitmap[s2]; const maxWidth = Math.min(width - offsetT, symbolWidth); switch (combinationOperator) { case 0: for (t2 = 0; t2 < maxWidth; t2++) { row[offsetT + t2] |= symbolRow[t2]; } break; case 2: for (t2 = 0; t2 < maxWidth; t2++) { row[offsetT + t2] ^= symbolRow[t2]; } break; default: throw new Jbig2Error(`operator ${combinationOperator} is not supported`); } } currentS += symbolHeight - 1; } else { for (t2 = 0; t2 < symbolHeight; t2++) { row = bitmap[offsetT + t2]; if (!row) { continue; } symbolRow = symbolBitmap[t2]; switch (combinationOperator) { case 0: for (s2 = 0; s2 < symbolWidth; s2++) { row[offsetS + s2] |= symbolRow[s2]; } break; case 2: for (s2 = 0; s2 < symbolWidth; s2++) { row[offsetS + s2] ^= symbolRow[s2]; } break; default: throw new Jbig2Error(`operator ${combinationOperator} is not supported`); } } currentS += symbolWidth - 1; } i++; const deltaS = huffman ? huffmanTables.tableDeltaS.decode(huffmanInput) : decodeInteger(contextCache, "IADS", decoder); if (deltaS === null) { break; } currentS += deltaS + dsOffset; } while (true); } return bitmap; } function decodePatternDictionary(mmr, patternWidth, patternHeight, maxPatternIndex, template, decodingContext) { const at = []; if (!mmr) { at.push({ x: -patternWidth, y: 0 }); if (template === 0) { at.push({ x: -3, y: -1 }, { x: 2, y: -2 }, { x: -2, y: -2 }); } } const collectiveWidth = (maxPatternIndex + 1) * patternWidth; const collectiveBitmap = decodeBitmap(mmr, collectiveWidth, patternHeight, template, false, null, at, decodingContext); const patterns = []; for (let i = 0; i <= maxPatternIndex; i++) { const patternBitmap = []; const xMin = patternWidth * i; const xMax = xMin + patternWidth; for (let y = 0; y < patternHeight; y++) { patternBitmap.push(collectiveBitmap[y].subarray(xMin, xMax)); } patterns.push(patternBitmap); } return patterns; } function decodeHalftoneRegion(mmr, patterns, template, regionWidth, regionHeight, defaultPixelValue, enableSkip, combinationOperator, gridWidth, gridHeight, gridOffsetX, gridOffsetY, gridVectorX, gridVectorY, decodingContext) { const skip = null; if (enableSkip) { throw new Jbig2Error("skip is not supported"); } if (combinationOperator !== 0) { throw new Jbig2Error(`operator "${combinationOperator}" is not supported in halftone region`); } const regionBitmap = []; let i, j, row; for (i = 0; i < regionHeight; i++) { row = new Uint8Array(regionWidth); if (defaultPixelValue) { for (j = 0; j < regionWidth; j++) { row[j] = defaultPixelValue; } } regionBitmap.push(row); } const numberOfPatterns = patterns.length; const pattern0 = patterns[0]; const patternWidth = pattern0[0].length, patternHeight = pattern0.length; const bitsPerValue = (0, _core_utils.log2)(numberOfPatterns); const at = []; if (!mmr) { at.push({ x: template <= 1 ? 3 : 2, y: -1 }); if (template === 0) { at.push({ x: -3, y: -1 }, { x: 2, y: -2 }, { x: -2, y: -2 }); } } const grayScaleBitPlanes = []; let mmrInput, bitmap; if (mmr) { mmrInput = new Reader(decodingContext.data, decodingContext.start, decodingContext.end); } for (i = bitsPerValue - 1; i >= 0; i--) { if (mmr) { bitmap = decodeMMRBitmap(mmrInput, gridWidth, gridHeight, true); } else { bitmap = decodeBitmap(false, gridWidth, gridHeight, template, false, skip, at, decodingContext); } grayScaleBitPlanes[i] = bitmap; } let mg, ng, bit, patternIndex, patternBitmap, x, y, patternRow, regionRow; for (mg = 0; mg < gridHeight; mg++) { for (ng = 0; ng < gridWidth; ng++) { bit = 0; patternIndex = 0; for (j = bitsPerValue - 1; j >= 0; j--) { bit ^= grayScaleBitPlanes[j][mg][ng]; patternIndex |= bit << j; } patternBitmap = patterns[patternIndex]; x = gridOffsetX + mg * gridVectorY + ng * gridVectorX >> 8; y = gridOffsetY + mg * gridVectorX - ng * gridVectorY >> 8; if (x >= 0 && x + patternWidth <= regionWidth && y >= 0 && y + patternHeight <= regionHeight) { for (i = 0; i < patternHeight; i++) { regionRow = regionBitmap[y + i]; patternRow = patternBitmap[i]; for (j = 0; j < patternWidth; j++) { regionRow[x + j] |= patternRow[j]; } } } else { let regionX, regionY; for (i = 0; i < patternHeight; i++) { regionY = y + i; if (regionY < 0 || regionY >= regionHeight) { continue; } regionRow = regionBitmap[regionY]; patternRow = patternBitmap[i]; for (j = 0; j < patternWidth; j++) { regionX = x + j; if (regionX >= 0 && regionX < regionWidth) { regionRow[regionX] |= patternRow[j]; } } } } } } return regionBitmap; } function readSegmentHeader(data, start) { const segmentHeader = {}; segmentHeader.number = (0, _core_utils.readUint32)(data, start); const flags = data[start + 4]; const segmentType = flags & 0x3f; if (!SegmentTypes[segmentType]) { throw new Jbig2Error("invalid segment type: " + segmentType); } segmentHeader.type = segmentType; segmentHeader.typeName = SegmentTypes[segmentType]; segmentHeader.deferredNonRetain = !!(flags & 0x80); const pageAssociationFieldSize = !!(flags & 0x40); const referredFlags = data[start + 5]; let referredToCount = referredFlags >> 5 & 7; const retainBits = [referredFlags & 31]; let position = start + 6; if (referredFlags === 7) { referredToCount = (0, _core_utils.readUint32)(data, position - 1) & 0x1fffffff; position += 3; let bytes = referredToCount + 7 >> 3; retainBits[0] = data[position++]; while (--bytes > 0) { retainBits.push(data[position++]); } } else if (referredFlags === 5 || referredFlags === 6) { throw new Jbig2Error("invalid referred-to flags"); } segmentHeader.retainBits = retainBits; let referredToSegmentNumberSize = 4; if (segmentHeader.number <= 256) { referredToSegmentNumberSize = 1; } else if (segmentHeader.number <= 65536) { referredToSegmentNumberSize = 2; } const referredTo = []; let i, ii; for (i = 0; i < referredToCount; i++) { let number; if (referredToSegmentNumberSize === 1) { number = data[position]; } else if (referredToSegmentNumberSize === 2) { number = (0, _core_utils.readUint16)(data, position); } else { number = (0, _core_utils.readUint32)(data, position); } referredTo.push(number); position += referredToSegmentNumberSize; } segmentHeader.referredTo = referredTo; if (!pageAssociationFieldSize) { segmentHeader.pageAssociation = data[position++]; } else { segmentHeader.pageAssociation = (0, _core_utils.readUint32)(data, position); position += 4; } segmentHeader.length = (0, _core_utils.readUint32)(data, position); position += 4; if (segmentHeader.length === 0xffffffff) { if (segmentType === 38) { const genericRegionInfo = readRegionSegmentInformation(data, position); const genericRegionSegmentFlags = data[position + RegionSegmentInformationFieldLength]; const genericRegionMmr = !!(genericRegionSegmentFlags & 1); const searchPatternLength = 6; const searchPattern = new Uint8Array(searchPatternLength); if (!genericRegionMmr) { searchPattern[0] = 0xff; searchPattern[1] = 0xac; } searchPattern[2] = genericRegionInfo.height >>> 24 & 0xff; searchPattern[3] = genericRegionInfo.height >> 16 & 0xff; searchPattern[4] = genericRegionInfo.height >> 8 & 0xff; searchPattern[5] = genericRegionInfo.height & 0xff; for (i = position, ii = data.length; i < ii; i++) { let j = 0; while (j < searchPatternLength && searchPattern[j] === data[i + j]) { j++; } if (j === searchPatternLength) { segmentHeader.length = i + searchPatternLength; break; } } if (segmentHeader.length === 0xffffffff) { throw new Jbig2Error("segment end was not found"); } } else { throw new Jbig2Error("invalid unknown segment length"); } } segmentHeader.headerEnd = position; return segmentHeader; } function readSegments(header, data, start, end) { const segments = []; let position = start; while (position < end) { const segmentHeader = readSegmentHeader(data, position); position = segmentHeader.headerEnd; const segment = { header: segmentHeader, data }; if (!header.randomAccess) { segment.start = position; position += segmentHeader.length; segment.end = position; } segments.push(segment); if (segmentHeader.type === 51) { break; } } if (header.randomAccess) { for (let i = 0, ii = segments.length; i < ii; i++) { segments[i].start = position; position += segments[i].header.length; segments[i].end = position; } } return segments; } function readRegionSegmentInformation(data, start) { return { width: (0, _core_utils.readUint32)(data, start), height: (0, _core_utils.readUint32)(data, start + 4), x: (0, _core_utils.readUint32)(data, start + 8), y: (0, _core_utils.readUint32)(data, start + 12), combinationOperator: data[start + 16] & 7 }; } const RegionSegmentInformationFieldLength = 17; function processSegment(segment, visitor) { const header = segment.header; const data = segment.data, end = segment.end; let position = segment.start; let args, at, i, atLength; switch (header.type) { case 0: const dictionary = {}; const dictionaryFlags = (0, _core_utils.readUint16)(data, position); dictionary.huffman = !!(dictionaryFlags & 1); dictionary.refinement = !!(dictionaryFlags & 2); dictionary.huffmanDHSelector = dictionaryFlags >> 2 & 3; dictionary.huffmanDWSelector = dictionaryFlags >> 4 & 3; dictionary.bitmapSizeSelector = dictionaryFlags >> 6 & 1; dictionary.aggregationInstancesSelector = dictionaryFlags >> 7 & 1; dictionary.bitmapCodingContextUsed = !!(dictionaryFlags & 256); dictionary.bitmapCodingContextRetained = !!(dictionaryFlags & 512); dictionary.template = dictionaryFlags >> 10 & 3; dictionary.refinementTemplate = dictionaryFlags >> 12 & 1; position += 2; if (!dictionary.huffman) { atLength = dictionary.template === 0 ? 4 : 1; at = []; for (i = 0; i < atLength; i++) { at.push({ x: (0, _core_utils.readInt8)(data, position), y: (0, _core_utils.readInt8)(data, position + 1) }); position += 2; } dictionary.at = at; } if (dictionary.refinement && !dictionary.refinementTemplate) { at = []; for (i = 0; i < 2; i++) { at.push({ x: (0, _core_utils.readInt8)(data, position), y: (0, _core_utils.readInt8)(data, position + 1) }); position += 2; } dictionary.refinementAt = at; } dictionary.numberOfExportedSymbols = (0, _core_utils.readUint32)(data, position); position += 4; dictionary.numberOfNewSymbols = (0, _core_utils.readUint32)(data, position); position += 4; args = [dictionary, header.number, header.referredTo, data, position, end]; break; case 6: case 7: const textRegion = {}; textRegion.info = readRegionSegmentInformation(data, position); position += RegionSegmentInformationFieldLength; const textRegionSegmentFlags = (0, _core_utils.readUint16)(data, position); position += 2; textRegion.huffman = !!(textRegionSegmentFlags & 1); textRegion.refinement = !!(textRegionSegmentFlags & 2); textRegion.logStripSize = textRegionSegmentFlags >> 2 & 3; textRegion.stripSize = 1 << textRegion.logStripSize; textRegion.referenceCorner = textRegionSegmentFlags >> 4 & 3; textRegion.transposed = !!(textRegionSegmentFlags & 64); textRegion.combinationOperator = textRegionSegmentFlags >> 7 & 3; textRegion.defaultPixelValue = textRegionSegmentFlags >> 9 & 1; textRegion.dsOffset = textRegionSegmentFlags << 17 >> 27; textRegion.refinementTemplate = textRegionSegmentFlags >> 15 & 1; if (textRegion.huffman) { const textRegionHuffmanFlags = (0, _core_utils.readUint16)(data, position); position += 2; textRegion.huffmanFS = textRegionHuffmanFlags & 3; textRegion.huffmanDS = textRegionHuffmanFlags >> 2 & 3; textRegion.huffmanDT = textRegionHuffmanFlags >> 4 & 3; textRegion.huffmanRefinementDW = textRegionHuffmanFlags >> 6 & 3; textRegion.huffmanRefinementDH = textRegionHuffmanFlags >> 8 & 3; textRegion.huffmanRefinementDX = textRegionHuffmanFlags >> 10 & 3; textRegion.huffmanRefinementDY = textRegionHuffmanFlags >> 12 & 3; textRegion.huffmanRefinementSizeSelector = !!(textRegionHuffmanFlags & 0x4000); } if (textRegion.refinement && !textRegion.refinementTemplate) { at = []; for (i = 0; i < 2; i++) { at.push({ x: (0, _core_utils.readInt8)(data, position), y: (0, _core_utils.readInt8)(data, position + 1) }); position += 2; } textRegion.refinementAt = at; } textRegion.numberOfSymbolInstances = (0, _core_utils.readUint32)(data, position); position += 4; args = [textRegion, header.referredTo, data, position, end]; break; case 16: const patternDictionary = {}; const patternDictionaryFlags = data[position++]; patternDictionary.mmr = !!(patternDictionaryFlags & 1); patternDictionary.template = patternDictionaryFlags >> 1 & 3; patternDictionary.patternWidth = data[position++]; patternDictionary.patternHeight = data[position++]; patternDictionary.maxPatternIndex = (0, _core_utils.readUint32)(data, position); position += 4; args = [patternDictionary, header.number, data, position, end]; break; case 22: case 23: const halftoneRegion = {}; halftoneRegion.info = readRegionSegmentInformation(data, position); position += RegionSegmentInformationFieldLength; const halftoneRegionFlags = data[position++]; halftoneRegion.mmr = !!(halftoneRegionFlags & 1); halftoneRegion.template = halftoneRegionFlags >> 1 & 3; halftoneRegion.enableSkip = !!(halftoneRegionFlags & 8); halftoneRegion.combinationOperator = halftoneRegionFlags >> 4 & 7; halftoneRegion.defaultPixelValue = halftoneRegionFlags >> 7 & 1; halftoneRegion.gridWidth = (0, _core_utils.readUint32)(data, position); position += 4; halftoneRegion.gridHeight = (0, _core_utils.readUint32)(data, position); position += 4; halftoneRegion.gridOffsetX = (0, _core_utils.readUint32)(data, position) & 0xffffffff; position += 4; halftoneRegion.gridOffsetY = (0, _core_utils.readUint32)(data, position) & 0xffffffff; position += 4; halftoneRegion.gridVectorX = (0, _core_utils.readUint16)(data, position); position += 2; halftoneRegion.gridVectorY = (0, _core_utils.readUint16)(data, position); position += 2; args = [halftoneRegion, header.referredTo, data, position, end]; break; case 38: case 39: const genericRegion = {}; genericRegion.info = readRegionSegmentInformation(data, position); position += RegionSegmentInformationFieldLength; const genericRegionSegmentFlags = data[position++]; genericRegion.mmr = !!(genericRegionSegmentFlags & 1); genericRegion.template = genericRegionSegmentFlags >> 1 & 3; genericRegion.prediction = !!(genericRegionSegmentFlags & 8); if (!genericRegion.mmr) { atLength = genericRegion.template === 0 ? 4 : 1; at = []; for (i = 0; i < atLength; i++) { at.push({ x: (0, _core_utils.readInt8)(data, position), y: (0, _core_utils.readInt8)(data, position + 1) }); position += 2; } genericRegion.at = at; } args = [genericRegion, data, position, end]; break; case 48: const pageInfo = { width: (0, _core_utils.readUint32)(data, position), height: (0, _core_utils.readUint32)(data, position + 4), resolutionX: (0, _core_utils.readUint32)(data, position + 8), resolutionY: (0, _core_utils.readUint32)(data, position + 12) }; if (pageInfo.height === 0xffffffff) { delete pageInfo.height; } const pageSegmentFlags = data[position + 16]; (0, _core_utils.readUint16)(data, position + 17); pageInfo.lossless = !!(pageSegmentFlags & 1); pageInfo.refinement = !!(pageSegmentFlags & 2); pageInfo.defaultPixelValue = pageSegmentFlags >> 2 & 1; pageInfo.combinationOperator = pageSegmentFlags >> 3 & 3; pageInfo.requiresBuffer = !!(pageSegmentFlags & 32); pageInfo.combinationOperatorOverride = !!(pageSegmentFlags & 64); args = [pageInfo]; break; case 49: break; case 50: break; case 51: break; case 53: args = [header.number, data, position, end]; break; case 62: break; default: throw new Jbig2Error(`segment type ${header.typeName}(${header.type}) is not implemented`); } const callbackName = "on" + header.typeName; if (callbackName in visitor) { visitor[callbackName].apply(visitor, args); } } function processSegments(segments, visitor) { for (let i = 0, ii = segments.length; i < ii; i++) { processSegment(segments[i], visitor); } } function parseJbig2Chunks(chunks) { const visitor = new SimpleSegmentVisitor(); for (let i = 0, ii = chunks.length; i < ii; i++) { const chunk = chunks[i]; const segments = readSegments({}, chunk.data, chunk.start, chunk.end); processSegments(segments, visitor); } return visitor.buffer; } function parseJbig2(data) { const end = data.length; let position = 0; if (data[position] !== 0x97 || data[position + 1] !== 0x4a || data[position + 2] !== 0x42 || data[position + 3] !== 0x32 || data[position + 4] !== 0x0d || data[position + 5] !== 0x0a || data[position + 6] !== 0x1a || data[position + 7] !== 0x0a) { throw new Jbig2Error("parseJbig2 - invalid header."); } const header = Object.create(null); position += 8; const flags = data[position++]; header.randomAccess = !(flags & 1); if (!(flags & 2)) { header.numberOfPages = (0, _core_utils.readUint32)(data, position); position += 4; } const segments = readSegments(header, data, position, end); const visitor = new SimpleSegmentVisitor(); processSegments(segments, visitor); const { width, height } = visitor.currentPageInfo; const bitPacked = visitor.buffer; const imgData = new Uint8ClampedArray(width * height); let q = 0, k = 0; for (let i = 0; i < height; i++) { let mask = 0, buffer; for (let j = 0; j < width; j++) { if (!mask) { mask = 128; buffer = bitPacked[k++]; } imgData[q++] = buffer & mask ? 0 : 255; mask >>= 1; } } return { imgData, width, height }; } class SimpleSegmentVisitor { onPageInformation(info) { this.currentPageInfo = info; const rowSize = info.width + 7 >> 3; const buffer = new Uint8ClampedArray(rowSize * info.height); if (info.defaultPixelValue) { buffer.fill(0xff); } this.buffer = buffer; } drawBitmap(regionInfo, bitmap) { const pageInfo = this.currentPageInfo; const width = regionInfo.width, height = regionInfo.height; const rowSize = pageInfo.width + 7 >> 3; const combinationOperator = pageInfo.combinationOperatorOverride ? regionInfo.combinationOperator : pageInfo.combinationOperator; const buffer = this.buffer; const mask0 = 128 >> (regionInfo.x & 7); let offset0 = regionInfo.y * rowSize + (regionInfo.x >> 3); let i, j, mask, offset; switch (combinationOperator) { case 0: for (i = 0; i < height; i++) { mask = mask0; offset = offset0; for (j = 0; j < width; j++) { if (bitmap[i][j]) { buffer[offset] |= mask; } mask >>= 1; if (!mask) { mask = 128; offset++; } } offset0 += rowSize; } break; case 2: for (i = 0; i < height; i++) { mask = mask0; offset = offset0; for (j = 0; j < width; j++) { if (bitmap[i][j]) { buffer[offset] ^= mask; } mask >>= 1; if (!mask) { mask = 128; offset++; } } offset0 += rowSize; } break; default: throw new Jbig2Error(`operator ${combinationOperator} is not supported`); } } onImmediateGenericRegion(region, data, start, end) { const regionInfo = region.info; const decodingContext = new DecodingContext(data, start, end); const bitmap = decodeBitmap(region.mmr, regionInfo.width, regionInfo.height, region.template, region.prediction, null, region.at, decodingContext); this.drawBitmap(regionInfo, bitmap); } onImmediateLosslessGenericRegion() { this.onImmediateGenericRegion(...arguments); } onSymbolDictionary(dictionary, currentSegment, referredSegments, data, start, end) { let huffmanTables, huffmanInput; if (dictionary.huffman) { huffmanTables = getSymbolDictionaryHuffmanTables(dictionary, referredSegments, this.customTables); huffmanInput = new Reader(data, start, end); } let symbols = this.symbols; if (!symbols) { this.symbols = symbols = {}; } const inputSymbols = []; for (const referredSegment of referredSegments) { const referredSymbols = symbols[referredSegment]; if (referredSymbols) { inputSymbols.push(...referredSymbols); } } const decodingContext = new DecodingContext(data, start, end); symbols[currentSegment] = decodeSymbolDictionary(dictionary.huffman, dictionary.refinement, inputSymbols, dictionary.numberOfNewSymbols, dictionary.numberOfExportedSymbols, huffmanTables, dictionary.template, dictionary.at, dictionary.refinementTemplate, dictionary.refinementAt, decodingContext, huffmanInput); } onImmediateTextRegion(region, referredSegments, data, start, end) { const regionInfo = region.info; let huffmanTables, huffmanInput; const symbols = this.symbols; const inputSymbols = []; for (const referredSegment of referredSegments) { const referredSymbols = symbols[referredSegment]; if (referredSymbols) { inputSymbols.push(...referredSymbols); } } const symbolCodeLength = (0, _core_utils.log2)(inputSymbols.length); if (region.huffman) { huffmanInput = new Reader(data, start, end); huffmanTables = getTextRegionHuffmanTables(region, referredSegments, this.customTables, inputSymbols.length, huffmanInput); } const decodingContext = new DecodingContext(data, start, end); const 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); this.drawBitmap(regionInfo, bitmap); } onImmediateLosslessTextRegion() { this.onImmediateTextRegion(...arguments); } onPatternDictionary(dictionary, currentSegment, data, start, end) { let patterns = this.patterns; if (!patterns) { this.patterns = patterns = {}; } const decodingContext = new DecodingContext(data, start, end); patterns[currentSegment] = decodePatternDictionary(dictionary.mmr, dictionary.patternWidth, dictionary.patternHeight, dictionary.maxPatternIndex, dictionary.template, decodingContext); } onImmediateHalftoneRegion(region, referredSegments, data, start, end) { const patterns = this.patterns[referredSegments[0]]; const regionInfo = region.info; const decodingContext = new DecodingContext(data, start, end); const 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); this.drawBitmap(regionInfo, bitmap); } onImmediateLosslessHalftoneRegion() { this.onImmediateHalftoneRegion(...arguments); } onTables(currentSegment, data, start, end) { let customTables = this.customTables; if (!customTables) { this.customTables = customTables = {}; } customTables[currentSegment] = decodeTablesSegment(data, start, end); } } class HuffmanLine { constructor(lineData) { if (lineData.length === 2) { this.isOOB = true; this.rangeLow = 0; this.prefixLength = lineData[0]; this.rangeLength = 0; this.prefixCode = lineData[1]; this.isLowerRange = false; } else { this.isOOB = false; this.rangeLow = lineData[0]; this.prefixLength = lineData[1]; this.rangeLength = lineData[2]; this.prefixCode = lineData[3]; this.isLowerRange = lineData[4] === "lower"; } } } class HuffmanTreeNode { constructor(line) { this.children = []; if (line) { this.isLeaf = true; this.rangeLength = line.rangeLength; this.rangeLow = line.rangeLow; this.isLowerRange = line.isLowerRange; this.isOOB = line.isOOB; } else { this.isLeaf = false; } } buildTree(line, shift) { const bit = line.prefixCode >> shift & 1; if (shift <= 0) { this.children[bit] = new HuffmanTreeNode(line); } else { let node = this.children[bit]; if (!node) { this.children[bit] = node = new HuffmanTreeNode(null); } node.buildTree(line, shift - 1); } } decodeNode(reader) { if (this.isLeaf) { if (this.isOOB) { return null; } const htOffset = reader.readBits(this.rangeLength); return this.rangeLow + (this.isLowerRange ? -htOffset : htOffset); } const node = this.children[reader.readBit()]; if (!node) { throw new Jbig2Error("invalid Huffman data"); } return node.decodeNode(reader); } } class HuffmanTable { constructor(lines, prefixCodesDone) { if (!prefixCodesDone) { this.assignPrefixCodes(lines); } this.rootNode = new HuffmanTreeNode(null); for (let i = 0, ii = lines.length; i < ii; i++) { const line = lines[i]; if (line.prefixLength > 0) { this.rootNode.buildTree(line, line.prefixLength - 1); } } } decode(reader) { return this.rootNode.decodeNode(reader); } assignPrefixCodes(lines) { const linesLength = lines.length; let prefixLengthMax = 0; for (let i = 0; i < linesLength; i++) { prefixLengthMax = Math.max(prefixLengthMax, lines[i].prefixLength); } const histogram = new Uint32Array(prefixLengthMax + 1); for (let i = 0; i < linesLength; i++) { histogram[lines[i].prefixLength]++; } let currentLength = 1, firstCode = 0, currentCode, currentTemp, line; histogram[0] = 0; while (currentLength <= prefixLengthMax) { firstCode = firstCode + histogram[currentLength - 1] << 1; currentCode = firstCode; currentTemp = 0; while (currentTemp < linesLength) { line = lines[currentTemp]; if (line.prefixLength === currentLength) { line.prefixCode = currentCode; currentCode++; } currentTemp++; } currentLength++; } } } function decodeTablesSegment(data, start, end) { const flags = data[start]; const lowestValue = (0, _core_utils.readUint32)(data, start + 1) & 0xffffffff; const highestValue = (0, _core_utils.readUint32)(data, start + 5) & 0xffffffff; const reader = new Reader(data, start + 9, end); const prefixSizeBits = (flags >> 1 & 7) + 1; const rangeSizeBits = (flags >> 4 & 7) + 1; const lines = []; let prefixLength, rangeLength, currentRangeLow = lowestValue; do { prefixLength = reader.readBits(prefixSizeBits); rangeLength = reader.readBits(rangeSizeBits); lines.push(new HuffmanLine([currentRangeLow, prefixLength, rangeLength, 0])); currentRangeLow += 1 << rangeLength; } while (currentRangeLow < highestValue); prefixLength = reader.readBits(prefixSizeBits); lines.push(new HuffmanLine([lowestValue - 1, prefixLength, 32, 0, "lower"])); prefixLength = reader.readBits(prefixSizeBits); lines.push(new HuffmanLine([highestValue, prefixLength, 32, 0])); if (flags & 1) { prefixLength = reader.readBits(prefixSizeBits); lines.push(new HuffmanLine([prefixLength, 0])); } return new HuffmanTable(lines, false); } const standardTablesCache = {}; function getStandardTable(number) { let table = standardTablesCache[number]; if (table) { return table; } let lines; switch (number) { case 1: lines = [[0, 1, 4, 0x0], [16, 2, 8, 0x2], [272, 3, 16, 0x6], [65808, 3, 32, 0x7]]; break; case 2: 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]]; break; case 3: 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]]; break; case 4: 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]]; break; case 5: 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]]; break; case 6: 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]]; break; case 7: 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]]; break; case 8: 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]]; break; case 9: 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]]; break; case 10: 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]]; break; case 11: 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]]; break; case 12: 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]]; break; case 13: 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]]; break; case 14: lines = [[-2, 3, 0, 0x4], [-1, 3, 0, 0x5], [0, 1, 0, 0x0], [1, 3, 0, 0x6], [2, 3, 0, 0x7]]; break; case 15: 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]]; break; default: throw new Jbig2Error(`standard table B.${number} does not exist`); } for (let i = 0, ii = lines.length; i < ii; i++) { lines[i] = new HuffmanLine(lines[i]); } table = new HuffmanTable(lines, true); standardTablesCache[number] = table; return table; } class Reader { constructor(data, start, end) { this.data = data; this.start = start; this.end = end; this.position = start; this.shift = -1; this.currentByte = 0; } readBit() { if (this.shift < 0) { if (this.position >= this.end) { throw new Jbig2Error("end of data while reading bit"); } this.currentByte = this.data[this.position++]; this.shift = 7; } const bit = this.currentByte >> this.shift & 1; this.shift--; return bit; } readBits(numBits) { let result = 0, i; for (i = numBits - 1; i >= 0; i--) { result |= this.readBit() << i; } return result; } byteAlign() { this.shift = -1; } next() { if (this.position >= this.end) { return -1; } return this.data[this.position++]; } } function getCustomHuffmanTable(index, referredTo, customTables) { let currentIndex = 0; for (let i = 0, ii = referredTo.length; i < ii; i++) { const table = customTables[referredTo[i]]; if (table) { if (index === currentIndex) { return table; } currentIndex++; } } throw new Jbig2Error("can't find custom Huffman table"); } function getTextRegionHuffmanTables(textRegion, referredTo, customTables, numberOfSymbols, reader) { const codes = []; for (let i = 0; i <= 34; i++) { const codeLength = reader.readBits(4); codes.push(new HuffmanLine([i, codeLength, 0, 0])); } const runCodesTable = new HuffmanTable(codes, false); codes.length = 0; for (let i = 0; i < numberOfSymbols;) { const codeLength = runCodesTable.decode(reader); if (codeLength >= 32) { let repeatedLength, numberOfRepeats, j; switch (codeLength) { case 32: if (i === 0) { throw new Jbig2Error("no previous value in symbol ID table"); } numberOfRepeats = reader.readBits(2) + 3; repeatedLength = codes[i - 1].prefixLength; break; case 33: numberOfRepeats = reader.readBits(3) + 3; repeatedLength = 0; break; case 34: numberOfRepeats = reader.readBits(7) + 11; repeatedLength = 0; break; default: throw new Jbig2Error("invalid code length in symbol ID table"); } for (j = 0; j < numberOfRepeats; j++) { codes.push(new HuffmanLine([i, repeatedLength, 0, 0])); i++; } } else { codes.push(new HuffmanLine([i, codeLength, 0, 0])); i++; } } reader.byteAlign(); const symbolIDTable = new HuffmanTable(codes, false); let customIndex = 0, tableFirstS, tableDeltaS, tableDeltaT; switch (textRegion.huffmanFS) { case 0: case 1: tableFirstS = getStandardTable(textRegion.huffmanFS + 6); break; case 3: tableFirstS = getCustomHuffmanTable(customIndex, referredTo, customTables); customIndex++; break; default: throw new Jbig2Error("invalid Huffman FS selector"); } switch (textRegion.huffmanDS) { case 0: case 1: case 2: tableDeltaS = getStandardTable(textRegion.huffmanDS + 8); break; case 3: tableDeltaS = getCustomHuffmanTable(customIndex, referredTo, customTables); customIndex++; break; default: throw new Jbig2Error("invalid Huffman DS selector"); } switch (textRegion.huffmanDT) { case 0: case 1: case 2: tableDeltaT = getStandardTable(textRegion.huffmanDT + 11); break; case 3: tableDeltaT = getCustomHuffmanTable(customIndex, referredTo, customTables); customIndex++; break; default: throw new Jbig2Error("invalid Huffman DT selector"); } if (textRegion.refinement) { throw new Jbig2Error("refinement with Huffman is not supported"); } return { symbolIDTable, tableFirstS, tableDeltaS, tableDeltaT }; } function getSymbolDictionaryHuffmanTables(dictionary, referredTo, customTables) { let customIndex = 0, tableDeltaHeight, tableDeltaWidth; switch (dictionary.huffmanDHSelector) { case 0: case 1: tableDeltaHeight = getStandardTable(dictionary.huffmanDHSelector + 4); break; case 3: tableDeltaHeight = getCustomHuffmanTable(customIndex, referredTo, customTables); customIndex++; break; default: throw new Jbig2Error("invalid Huffman DH selector"); } switch (dictionary.huffmanDWSelector) { case 0: case 1: tableDeltaWidth = getStandardTable(dictionary.huffmanDWSelector + 2); break; case 3: tableDeltaWidth = getCustomHuffmanTable(customIndex, referredTo, customTables); customIndex++; break; default: throw new Jbig2Error("invalid Huffman DW selector"); } let tableBitmapSize, tableAggregateInstances; if (dictionary.bitmapSizeSelector) { tableBitmapSize = getCustomHuffmanTable(customIndex, referredTo, customTables); customIndex++; } else { tableBitmapSize = getStandardTable(1); } if (dictionary.aggregationInstancesSelector) { tableAggregateInstances = getCustomHuffmanTable(customIndex, referredTo, customTables); } else { tableAggregateInstances = getStandardTable(1); } return { tableDeltaHeight, tableDeltaWidth, tableBitmapSize, tableAggregateInstances }; } function readUncompressedBitmap(reader, width, height) { const bitmap = []; for (let y = 0; y < height; y++) { const row = new Uint8Array(width); bitmap.push(row); for (let x = 0; x < width; x++) { row[x] = reader.readBit(); } reader.byteAlign(); } return bitmap; } function decodeMMRBitmap(input, width, height, endOfBlock) { const params = { K: -1, Columns: width, Rows: height, BlackIs1: true, EndOfBlock: endOfBlock }; const decoder = new _ccitt.CCITTFaxDecoder(input, params); const bitmap = []; let currentByte, eof = false; for (let y = 0; y < height; y++) { const row = new Uint8Array(width); bitmap.push(row); let shift = -1; for (let x = 0; x < width; x++) { if (shift < 0) { currentByte = decoder.readNextChar(); if (currentByte === -1) { currentByte = 0; eof = true; } shift = 7; } row[x] = currentByte >> shift & 1; shift--; } } if (endOfBlock && !eof) { const lookForEOFLimit = 5; for (let i = 0; i < lookForEOFLimit; i++) { if (decoder.readNextChar() === -1) { break; } } } return bitmap; } class Jbig2Image { parseChunks(chunks) { return parseJbig2Chunks(chunks); } parse(data) { const { imgData, width, height } = parseJbig2(data); this.width = width; this.height = height; return imgData; } } exports.Jbig2Image = Jbig2Image; /***/ }), /* 3 */ /***/ ((__unused_webpack_module, exports, __w_pdfjs_require__) => { Object.defineProperty(exports, "__esModule", ({ value: true })); exports.XRefParseException = exports.XRefEntryException = exports.ParserEOFException = exports.PDF_VERSION_REGEXP = exports.MissingDataException = void 0; exports.arrayBuffersToBytes = arrayBuffersToBytes; exports.collectActions = collectActions; exports.encodeToXmlString = encodeToXmlString; exports.escapePDFName = escapePDFName; exports.escapeString = escapeString; exports.getInheritableProperty = getInheritableProperty; exports.getLookupTableFactory = getLookupTableFactory; exports.getNewAnnotationsMap = getNewAnnotationsMap; exports.getRotationMatrix = getRotationMatrix; exports.isAscii = isAscii; exports.isWhiteSpace = isWhiteSpace; exports.log2 = log2; exports.numberToString = numberToString; exports.parseXFAPath = parseXFAPath; exports.readInt8 = readInt8; exports.readUint16 = readUint16; exports.readUint32 = readUint32; exports.recoverJsURL = recoverJsURL; exports.stringToUTF16HexString = stringToUTF16HexString; exports.stringToUTF16String = stringToUTF16String; exports.toRomanNumerals = toRomanNumerals; exports.validateCSSFont = validateCSSFont; exports.validateFontName = validateFontName; var _util = __w_pdfjs_require__(1); var _primitives = __w_pdfjs_require__(4); var _base_stream = __w_pdfjs_require__(5); const PDF_VERSION_REGEXP = /^[1-9]\.\d$/; exports.PDF_VERSION_REGEXP = PDF_VERSION_REGEXP; function getLookupTableFactory(initializer) { let lookup; return function () { if (initializer) { lookup = Object.create(null); initializer(lookup); initializer = null; } return lookup; }; } class MissingDataException extends _util.BaseException { constructor(begin, end) { super(`Missing data [${begin}, ${end})`, "MissingDataException"); this.begin = begin; this.end = end; } } exports.MissingDataException = MissingDataException; class ParserEOFException extends _util.BaseException { constructor(msg) { super(msg, "ParserEOFException"); } } exports.ParserEOFException = ParserEOFException; class XRefEntryException extends _util.BaseException { constructor(msg) { super(msg, "XRefEntryException"); } } exports.XRefEntryException = XRefEntryException; class XRefParseException extends _util.BaseException { constructor(msg) { super(msg, "XRefParseException"); } } exports.XRefParseException = XRefParseException; function arrayBuffersToBytes(arr) { const length = arr.length; if (length === 0) { return new Uint8Array(0); } if (length === 1) { return new Uint8Array(arr[0]); } let dataLength = 0; for (let i = 0; i < length; i++) { dataLength += arr[i].byteLength; } const data = new Uint8Array(dataLength); let pos = 0; for (let i = 0; i < length; i++) { const item = new Uint8Array(arr[i]); data.set(item, pos); pos += item.byteLength; } return data; } function getInheritableProperty({ dict, key, getArray = false, stopWhenFound = true }) { let values; const visited = new _primitives.RefSet(); while (dict instanceof _primitives.Dict && !(dict.objId && visited.has(dict.objId))) { if (dict.objId) { visited.put(dict.objId); } const value = getArray ? dict.getArray(key) : dict.get(key); if (value !== undefined) { if (stopWhenFound) { return value; } (values ||= []).push(value); } dict = dict.get("Parent"); } return values; } const ROMAN_NUMBER_MAP = ["", "C", "CC", "CCC", "CD", "D", "DC", "DCC", "DCCC", "CM", "", "X", "XX", "XXX", "XL", "L", "LX", "LXX", "LXXX", "XC", "", "I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX"]; function toRomanNumerals(number, lowerCase = false) { (0, _util.assert)(Number.isInteger(number) && number > 0, "The number should be a positive integer."); const romanBuf = []; let pos; while (number >= 1000) { number -= 1000; romanBuf.push("M"); } pos = number / 100 | 0; number %= 100; romanBuf.push(ROMAN_NUMBER_MAP[pos]); pos = number / 10 | 0; number %= 10; romanBuf.push(ROMAN_NUMBER_MAP[10 + pos]); romanBuf.push(ROMAN_NUMBER_MAP[20 + number]); const romanStr = romanBuf.join(""); return lowerCase ? romanStr.toLowerCase() : romanStr; } function log2(x) { if (x <= 0) { return 0; } return Math.ceil(Math.log2(x)); } function readInt8(data, offset) { return data[offset] << 24 >> 24; } function readUint16(data, offset) { return data[offset] << 8 | data[offset + 1]; } function readUint32(data, offset) { return (data[offset] << 24 | data[offset + 1] << 16 | data[offset + 2] << 8 | data[offset + 3]) >>> 0; } function isWhiteSpace(ch) { return ch === 0x20 || ch === 0x09 || ch === 0x0d || ch === 0x0a; } function parseXFAPath(path) { const positionPattern = /(.+)\[(\d+)\]$/; return path.split(".").map(component => { const m = component.match(positionPattern); if (m) { return { name: m[1], pos: parseInt(m[2], 10) }; } return { name: component, pos: 0 }; }); } function escapePDFName(str) { const buffer = []; let start = 0; for (let i = 0, ii = str.length; i < ii; i++) { const char = str.charCodeAt(i); if (char < 0x21 || char > 0x7e || char === 0x23 || char === 0x28 || char === 0x29 || char === 0x3c || char === 0x3e || char === 0x5b || char === 0x5d || char === 0x7b || char === 0x7d || char === 0x2f || char === 0x25) { if (start < i) { buffer.push(str.substring(start, i)); } buffer.push(`#${char.toString(16)}`); start = i + 1; } } if (buffer.length === 0) { return str; } if (start < str.length) { buffer.push(str.substring(start, str.length)); } return buffer.join(""); } function escapeString(str) { return str.replaceAll(/([()\\\n\r])/g, match => { if (match === "\n") { return "\\n"; } else if (match === "\r") { return "\\r"; } return `\\${match}`; }); } function _collectJS(entry, xref, list, parents) { if (!entry) { return; } let parent = null; if (entry instanceof _primitives.Ref) { if (parents.has(entry)) { return; } parent = entry; parents.put(parent); entry = xref.fetch(entry); } if (Array.isArray(entry)) { for (const element of entry) { _collectJS(element, xref, list, parents); } } else if (entry instanceof _primitives.Dict) { if ((0, _primitives.isName)(entry.get("S"), "JavaScript")) { const js = entry.get("JS"); let code; if (js instanceof _base_stream.BaseStream) { code = js.getString(); } else if (typeof js === "string") { code = js; } code &&= (0, _util.stringToPDFString)(code).replaceAll("\x00", ""); if (code) { list.push(code); } } _collectJS(entry.getRaw("Next"), xref, list, parents); } if (parent) { parents.remove(parent); } } function collectActions(xref, dict, eventType) { const actions = Object.create(null); const additionalActionsDicts = getInheritableProperty({ dict, key: "AA", stopWhenFound: false }); if (additionalActionsDicts) { for (let i = additionalActionsDicts.length - 1; i >= 0; i--) { const additionalActions = additionalActionsDicts[i]; if (!(additionalActions instanceof _primitives.Dict)) { continue; } for (const key of additionalActions.getKeys()) { const action = eventType[key]; if (!action) { continue; } const actionDict = additionalActions.getRaw(key); const parents = new _primitives.RefSet(); const list = []; _collectJS(actionDict, xref, list, parents); if (list.length > 0) { actions[action] = list; } } } } if (dict.has("A")) { const actionDict = dict.get("A"); const parents = new _primitives.RefSet(); const list = []; _collectJS(actionDict, xref, list, parents); if (list.length > 0) { actions.Action = list; } } return (0, _util.objectSize)(actions) > 0 ? actions : null; } const XMLEntities = { 0x3c: "<", 0x3e: ">", 0x26: "&", 0x22: """, 0x27: "'" }; function encodeToXmlString(str) { const buffer = []; let start = 0; for (let i = 0, ii = str.length; i < ii; i++) { const char = str.codePointAt(i); if (0x20 <= char && char <= 0x7e) { const entity = XMLEntities[char]; if (entity) { if (start < i) { buffer.push(str.substring(start, i)); } buffer.push(entity); start = i + 1; } } else { if (start < i) { buffer.push(str.substring(start, i)); } buffer.push(`&#x${char.toString(16).toUpperCase()};`); if (char > 0xd7ff && (char < 0xe000 || char > 0xfffd)) { i++; } start = i + 1; } } if (buffer.length === 0) { return str; } if (start < str.length) { buffer.push(str.substring(start, str.length)); } return buffer.join(""); } function validateFontName(fontFamily, mustWarn = false) { const m = /^("|').*("|')$/.exec(fontFamily); if (m && m[1] === m[2]) { const re = new RegExp(`[^\\\\]${m[1]}`); if (re.test(fontFamily.slice(1, -1))) { if (mustWarn) { (0, _util.warn)(`FontFamily contains unescaped ${m[1]}: ${fontFamily}.`); } return false; } } else { for (const ident of fontFamily.split(/[ \t]+/)) { if (/^(\d|(-(\d|-)))/.test(ident) || !/^[\w-\\]+$/.test(ident)) { if (mustWarn) { (0, _util.warn)(`FontFamily contains invalid : ${fontFamily}.`); } return false; } } } return true; } function validateCSSFont(cssFontInfo) { const DEFAULT_CSS_FONT_OBLIQUE = "14"; const DEFAULT_CSS_FONT_WEIGHT = "400"; const CSS_FONT_WEIGHT_VALUES = new Set(["100", "200", "300", "400", "500", "600", "700", "800", "900", "1000", "normal", "bold", "bolder", "lighter"]); const { fontFamily, fontWeight, italicAngle } = cssFontInfo; if (!validateFontName(fontFamily, true)) { return false; } const weight = fontWeight ? fontWeight.toString() : ""; cssFontInfo.fontWeight = CSS_FONT_WEIGHT_VALUES.has(weight) ? weight : DEFAULT_CSS_FONT_WEIGHT; const angle = parseFloat(italicAngle); cssFontInfo.italicAngle = isNaN(angle) || angle < -90 || angle > 90 ? DEFAULT_CSS_FONT_OBLIQUE : italicAngle.toString(); return true; } function recoverJsURL(str) { const URL_OPEN_METHODS = ["app.launchURL", "window.open", "xfa.host.gotoURL"]; const regex = new RegExp("^\\s*(" + URL_OPEN_METHODS.join("|").replaceAll(".", "\\.") + ")\\((?:'|\")([^'\"]*)(?:'|\")(?:,\\s*(\\w+)\\)|\\))", "i"); const jsUrl = regex.exec(str); if (jsUrl?.[2]) { const url = jsUrl[2]; let newWindow = false; if (jsUrl[3] === "true" && jsUrl[1] === "app.launchURL") { newWindow = true; } return { url, newWindow }; } return null; } function numberToString(value) { if (Number.isInteger(value)) { return value.toString(); } const roundedValue = Math.round(value * 100); if (roundedValue % 100 === 0) { return (roundedValue / 100).toString(); } if (roundedValue % 10 === 0) { return value.toFixed(1); } return value.toFixed(2); } function getNewAnnotationsMap(annotationStorage) { if (!annotationStorage) { return null; } const newAnnotationsByPage = new Map(); for (const [key, value] of annotationStorage) { if (!key.startsWith(_util.AnnotationEditorPrefix)) { continue; } let annotations = newAnnotationsByPage.get(value.pageIndex); if (!annotations) { annotations = []; newAnnotationsByPage.set(value.pageIndex, annotations); } annotations.push(value); } return newAnnotationsByPage.size > 0 ? newAnnotationsByPage : null; } function isAscii(str) { return /^[\x00-\x7F]*$/.test(str); } function stringToUTF16HexString(str) { const buf = []; for (let i = 0, ii = str.length; i < ii; i++) { const char = str.charCodeAt(i); buf.push((char >> 8 & 0xff).toString(16).padStart(2, "0"), (char & 0xff).toString(16).padStart(2, "0")); } return buf.join(""); } function stringToUTF16String(str, bigEndian = false) { const buf = []; if (bigEndian) { buf.push("\xFE\xFF"); } for (let i = 0, ii = str.length; i < ii; i++) { const char = str.charCodeAt(i); buf.push(String.fromCharCode(char >> 8 & 0xff), String.fromCharCode(char & 0xff)); } return buf.join(""); } function getRotationMatrix(rotation, width, height) { switch (rotation) { case 90: return [0, 1, -1, 0, width, 0]; case 180: return [-1, 0, 0, -1, width, height]; case 270: return [0, -1, 1, 0, 0, height]; default: throw new Error("Invalid rotation"); } } /***/ }), /* 4 */ /***/ ((__unused_webpack_module, exports, __w_pdfjs_require__) => { Object.defineProperty(exports, "__esModule", ({ value: true })); exports.RefSetCache = exports.RefSet = exports.Ref = exports.Name = exports.EOF = exports.Dict = exports.Cmd = exports.CIRCULAR_REF = void 0; exports.clearPrimitiveCaches = clearPrimitiveCaches; exports.isCmd = isCmd; exports.isDict = isDict; exports.isName = isName; exports.isRefsEqual = isRefsEqual; var _util = __w_pdfjs_require__(1); const CIRCULAR_REF = Symbol("CIRCULAR_REF"); exports.CIRCULAR_REF = CIRCULAR_REF; const EOF = Symbol("EOF"); exports.EOF = EOF; let CmdCache = Object.create(null); let NameCache = Object.create(null); let RefCache = Object.create(null); function clearPrimitiveCaches() { CmdCache = Object.create(null); NameCache = Object.create(null); RefCache = Object.create(null); } class Name { constructor(name) { this.name = name; } static get(name) { return NameCache[name] ||= new Name(name); } } exports.Name = Name; class Cmd { constructor(cmd) { this.cmd = cmd; } static get(cmd) { return CmdCache[cmd] ||= new Cmd(cmd); } } exports.Cmd = Cmd; const nonSerializable = function nonSerializableClosure() { return nonSerializable; }; class Dict { constructor(xref = null) { this._map = Object.create(null); this.xref = xref; this.objId = null; this.suppressEncryption = false; this.__nonSerializable__ = nonSerializable; } assignXref(newXref) { this.xref = newXref; } get size() { return Object.keys(this._map).length; } get(key1, key2, key3) { let value = this._map[key1]; if (value === undefined && key2 !== undefined) { value = this._map[key2]; if (value === undefined && key3 !== undefined) { value = this._map[key3]; } } if (value instanceof Ref && this.xref) { return this.xref.fetch(value, this.suppressEncryption); } return value; } async getAsync(key1, key2, key3) { let value = this._map[key1]; if (value === undefined && key2 !== undefined) { value = this._map[key2]; if (value === undefined && key3 !== undefined) { value = this._map[key3]; } } if (value instanceof Ref && this.xref) { return this.xref.fetchAsync(value, this.suppressEncryption); } return value; } getArray(key1, key2, key3) { let value = this._map[key1]; if (value === undefined && key2 !== undefined) { value = this._map[key2]; if (value === undefined && key3 !== undefined) { value = this._map[key3]; } } if (value instanceof Ref && this.xref) { value = this.xref.fetch(value, this.suppressEncryption); } if (Array.isArray(value)) { value = value.slice(); for (let i = 0, ii = value.length; i < ii; i++) { if (value[i] instanceof Ref && this.xref) { value[i] = this.xref.fetch(value[i], this.suppressEncryption); } } } return value; } getRaw(key) { return this._map[key]; } getKeys() { return Object.keys(this._map); } getRawValues() { return Object.values(this._map); } set(key, value) { this._map[key] = value; } has(key) { return this._map[key] !== undefined; } forEach(callback) { for (const key in this._map) { callback(key, this.get(key)); } } static get empty() { const emptyDict = new Dict(null); emptyDict.set = (key, value) => { (0, _util.unreachable)("Should not call `set` on the empty dictionary."); }; return (0, _util.shadow)(this, "empty", emptyDict); } static merge({ xref, dictArray, mergeSubDicts = false }) { const mergedDict = new Dict(xref), properties = new Map(); for (const dict of dictArray) { if (!(dict instanceof Dict)) { continue; } for (const [key, value] of Object.entries(dict._map)) { let property = properties.get(key); if (property === undefined) { property = []; properties.set(key, property); } else if (!mergeSubDicts || !(value instanceof Dict)) { continue; } property.push(value); } } for (const [name, values] of properties) { if (values.length === 1 || !(values[0] instanceof Dict)) { mergedDict._map[name] = values[0]; continue; } const subDict = new Dict(xref); for (const dict of values) { for (const [key, value] of Object.entries(dict._map)) { if (subDict._map[key] === undefined) { subDict._map[key] = value; } } } if (subDict.size > 0) { mergedDict._map[name] = subDict; } } properties.clear(); return mergedDict.size > 0 ? mergedDict : Dict.empty; } clone() { const dict = new Dict(this.xref); for (const key of this.getKeys()) { dict.set(key, this.getRaw(key)); } return dict; } } exports.Dict = Dict; class Ref { constructor(num, gen) { this.num = num; this.gen = gen; } toString() { if (this.gen === 0) { return `${this.num}R`; } return `${this.num}R${this.gen}`; } static fromString(str) { const ref = RefCache[str]; if (ref) { return ref; } const m = /^(\d+)R(\d*)$/.exec(str); if (!m || m[1] === "0") { return null; } return RefCache[str] = new Ref(parseInt(m[1]), !m[2] ? 0 : parseInt(m[2])); } static get(num, gen) { const key = gen === 0 ? `${num}R` : `${num}R${gen}`; return RefCache[key] ||= new Ref(num, gen); } } exports.Ref = Ref; class RefSet { constructor(parent = null) { this._set = new Set(parent?._set); } has(ref) { return this._set.has(ref.toString()); } put(ref) { this._set.add(ref.toString()); } remove(ref) { this._set.delete(ref.toString()); } [Symbol.iterator]() { return this._set.values(); } clear() { this._set.clear(); } } exports.RefSet = RefSet; class RefSetCache { constructor() { this._map = new Map(); } get size() { return this._map.size; } get(ref) { return this._map.get(ref.toString()); } has(ref) { return this._map.has(ref.toString()); } put(ref, obj) { this._map.set(ref.toString(), obj); } putAlias(ref, aliasRef) { this._map.set(ref.toString(), this.get(aliasRef)); } [Symbol.iterator]() { return this._map.values(); } clear() { this._map.clear(); } } exports.RefSetCache = RefSetCache; function isName(v, name) { return v instanceof Name && (name === undefined || v.name === name); } function isCmd(v, cmd) { return v instanceof Cmd && (cmd === undefined || v.cmd === cmd); } function isDict(v, type) { return v instanceof Dict && (type === undefined || isName(v.get("Type"), type)); } function isRefsEqual(v1, v2) { return v1.num === v2.num && v1.gen === v2.gen; } /***/ }), /* 5 */ /***/ ((__unused_webpack_module, exports, __w_pdfjs_require__) => { Object.defineProperty(exports, "__esModule", ({ value: true })); exports.BaseStream = void 0; var _util = __w_pdfjs_require__(1); class BaseStream { constructor() { if (this.constructor === BaseStream) { (0, _util.unreachable)("Cannot initialize BaseStream."); } } get length() { (0, _util.unreachable)("Abstract getter `length` accessed"); } get isEmpty() { (0, _util.unreachable)("Abstract getter `isEmpty` accessed"); } get isDataLoaded() { return (0, _util.shadow)(this, "isDataLoaded", true); } getByte() { (0, _util.unreachable)("Abstract method `getByte` called"); } getBytes(length) { (0, _util.unreachable)("Abstract method `getBytes` called"); } peekByte() { const peekedByte = this.getByte(); if (peekedByte !== -1) { this.pos--; } return peekedByte; } peekBytes(length) { const bytes = this.getBytes(length); this.pos -= bytes.length; return bytes; } getUint16() { const b0 = this.getByte(); const b1 = this.getByte(); if (b0 === -1 || b1 === -1) { return -1; } return (b0 << 8) + b1; } getInt32() { const b0 = this.getByte(); const b1 = this.getByte(); const b2 = this.getByte(); const b3 = this.getByte(); return (b0 << 24) + (b1 << 16) + (b2 << 8) + b3; } getByteRange(begin, end) { (0, _util.unreachable)("Abstract method `getByteRange` called"); } getString(length) { return (0, _util.bytesToString)(this.getBytes(length)); } skip(n) { this.pos += n || 1; } reset() { (0, _util.unreachable)("Abstract method `reset` called"); } moveStart() { (0, _util.unreachable)("Abstract method `moveStart` called"); } makeSubStream(start, length, dict = null) { (0, _util.unreachable)("Abstract method `makeSubStream` called"); } getBaseStreams() { return null; } } exports.BaseStream = BaseStream; /***/ }), /* 6 */ /***/ ((__unused_webpack_module, exports) => { Object.defineProperty(exports, "__esModule", ({ value: true })); exports.ArithmeticDecoder = void 0; const QeTable = [{ qe: 0x5601, nmps: 1, nlps: 1, switchFlag: 1 }, { qe: 0x3401, nmps: 2, nlps: 6, switchFlag: 0 }, { qe: 0x1801, nmps: 3, nlps: 9, switchFlag: 0 }, { qe: 0x0ac1, nmps: 4, nlps: 12, switchFlag: 0 }, { qe: 0x0521, nmps: 5, nlps: 29, switchFlag: 0 }, { qe: 0x0221, nmps: 38, nlps: 33, switchFlag: 0 }, { qe: 0x5601, nmps: 7, nlps: 6, switchFlag: 1 }, { qe: 0x5401, nmps: 8, nlps: 14, switchFlag: 0 }, { qe: 0x4801, nmps: 9, nlps: 14, switchFlag: 0 }, { qe: 0x3801, nmps: 10, nlps: 14, switchFlag: 0 }, { qe: 0x3001, nmps: 11, nlps: 17, switchFlag: 0 }, { qe: 0x2401, nmps: 12, nlps: 18, switchFlag: 0 }, { qe: 0x1c01, nmps: 13, nlps: 20, switchFlag: 0 }, { qe: 0x1601, nmps: 29, nlps: 21, switchFlag: 0 }, { qe: 0x5601, nmps: 15, nlps: 14, switchFlag: 1 }, { qe: 0x5401, nmps: 16, nlps: 14, switchFlag: 0 }, { qe: 0x5101, nmps: 17, nlps: 15, switchFlag: 0 }, { qe: 0x4801, nmps: 18, nlps: 16, switchFlag: 0 }, { qe: 0x3801, nmps: 19, nlps: 17, switchFlag: 0 }, { qe: 0x3401, nmps: 20, nlps: 18, switchFlag: 0 }, { qe: 0x3001, nmps: 21, nlps: 19, switchFlag: 0 }, { qe: 0x2801, nmps: 22, nlps: 19, switchFlag: 0 }, { qe: 0x2401, nmps: 23, nlps: 20, switchFlag: 0 }, { qe: 0x2201, nmps: 24, nlps: 21, switchFlag: 0 }, { qe: 0x1c01, nmps: 25, nlps: 22, switchFlag: 0 }, { qe: 0x1801, nmps: 26, nlps: 23, switchFlag: 0 }, { qe: 0x1601, nmps: 27, nlps: 24, switchFlag: 0 }, { qe: 0x1401, nmps: 28, nlps: 25, switchFlag: 0 }, { qe: 0x1201, nmps: 29, nlps: 26, switchFlag: 0 }, { qe: 0x1101, nmps: 30, nlps: 27, switchFlag: 0 }, { qe: 0x0ac1, nmps: 31, nlps: 28, switchFlag: 0 }, { qe: 0x09c1, nmps: 32, nlps: 29, switchFlag: 0 }, { qe: 0x08a1, nmps: 33, nlps: 30, switchFlag: 0 }, { qe: 0x0521, nmps: 34, nlps: 31, switchFlag: 0 }, { qe: 0x0441, nmps: 35, nlps: 32, switchFlag: 0 }, { qe: 0x02a1, nmps: 36, nlps: 33, switchFlag: 0 }, { qe: 0x0221, nmps: 37, nlps: 34, switchFlag: 0 }, { qe: 0x0141, nmps: 38, nlps: 35, switchFlag: 0 }, { qe: 0x0111, nmps: 39, nlps: 36, switchFlag: 0 }, { qe: 0x0085, nmps: 40, nlps: 37, switchFlag: 0 }, { qe: 0x0049, nmps: 41, nlps: 38, switchFlag: 0 }, { qe: 0x0025, nmps: 42, nlps: 39, switchFlag: 0 }, { qe: 0x0015, nmps: 43, nlps: 40, switchFlag: 0 }, { qe: 0x0009, nmps: 44, nlps: 41, switchFlag: 0 }, { qe: 0x0005, nmps: 45, nlps: 42, switchFlag: 0 }, { qe: 0x0001, nmps: 45, nlps: 43, switchFlag: 0 }, { qe: 0x5601, nmps: 46, nlps: 46, switchFlag: 0 }]; class ArithmeticDecoder { constructor(data, start, end) { this.data = data; this.bp = start; this.dataEnd = end; this.chigh = data[start]; this.clow = 0; this.byteIn(); this.chigh = this.chigh << 7 & 0xffff | this.clow >> 9 & 0x7f; this.clow = this.clow << 7 & 0xffff; this.ct -= 7; this.a = 0x8000; } byteIn() { const data = this.data; let bp = this.bp; if (data[bp] === 0xff) { if (data[bp + 1] > 0x8f) { this.clow += 0xff00; this.ct = 8; } else { bp++; this.clow += data[bp] << 9; this.ct = 7; this.bp = bp; } } else { bp++; this.clow += bp < this.dataEnd ? data[bp] << 8 : 0xff00; this.ct = 8; this.bp = bp; } if (this.clow > 0xffff) { this.chigh += this.clow >> 16; this.clow &= 0xffff; } } readBit(contexts, pos) { let cx_index = contexts[pos] >> 1, cx_mps = contexts[pos] & 1; const qeTableIcx = QeTable[cx_index]; const qeIcx = qeTableIcx.qe; let d; let a = this.a - qeIcx; if (this.chigh < qeIcx) { if (a < qeIcx) { a = qeIcx; d = cx_mps; cx_index = qeTableIcx.nmps; } else { a = qeIcx; d = 1 ^ cx_mps; if (qeTableIcx.switchFlag === 1) { cx_mps = d; } cx_index = qeTableIcx.nlps; } } else { this.chigh -= qeIcx; if ((a & 0x8000) !== 0) { this.a = a; return cx_mps; } if (a < qeIcx) { d = 1 ^ cx_mps; if (qeTableIcx.switchFlag === 1) { cx_mps = d; } cx_index = qeTableIcx.nlps; } else { d = cx_mps; cx_index = qeTableIcx.nmps; } } do { if (this.ct === 0) { this.byteIn(); } a <<= 1; this.chigh = this.chigh << 1 & 0xffff | this.clow >> 15 & 1; this.clow = this.clow << 1 & 0xffff; this.ct--; } while ((a & 0x8000) === 0); this.a = a; contexts[pos] = cx_index << 1 | cx_mps; return d; } } exports.ArithmeticDecoder = ArithmeticDecoder; /***/ }), /* 7 */ /***/ ((__unused_webpack_module, exports, __w_pdfjs_require__) => { Object.defineProperty(exports, "__esModule", ({ value: true })); exports.CCITTFaxDecoder = void 0; var _util = __w_pdfjs_require__(1); const ccittEOL = -2; const ccittEOF = -1; const twoDimPass = 0; const twoDimHoriz = 1; const twoDimVert0 = 2; const twoDimVertR1 = 3; const twoDimVertL1 = 4; const twoDimVertR2 = 5; const twoDimVertL2 = 6; const twoDimVertR3 = 7; const twoDimVertL3 = 8; const twoDimTable = [[-1, -1], [-1, -1], [7, twoDimVertL3], [7, twoDimVertR3], [6, twoDimVertL2], [6, twoDimVertL2], [6, twoDimVertR2], [6, twoDimVertR2], [4, twoDimPass], [4, twoDimPass], [4, twoDimPass], [4, twoDimPass], [4, twoDimPass], [4, twoDimPass], [4, twoDimPass], [4, twoDimPass], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimHoriz], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertL1], [3, twoDimVertR1], [3, twoDimVertR1], [3, twoDimVertR1], [3, twoDimVertR1], [3, twoDimVertR1], [3, twoDimVertR1], [3, twoDimVertR1], [3, twoDimVertR1], [3, twoDimVertR1], [3, twoDimVertR1], [3, twoDimVertR1], [3, twoDimVertR1], [3, twoDimVertR1], [3, twoDimVertR1], [3, twoDimVertR1], [3, twoDimVertR1], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0], [1, twoDimVert0]]; const whiteTable1 = [[-1, -1], [12, ccittEOL], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [11, 1792], [11, 1792], [12, 1984], [12, 2048], [12, 2112], [12, 2176], [12, 2240], [12, 2304], [11, 1856], [11, 1856], [11, 1920], [11, 1920], [12, 2368], [12, 2432], [12, 2496], [12, 2560]]; const whiteTable2 = [[-1, -1], [-1, -1], [-1, -1], [-1, -1], [8, 29], [8, 29], [8, 30], [8, 30], [8, 45], [8, 45], [8, 46], [8, 46], [7, 22], [7, 22], [7, 22], [7, 22], [7, 23], [7, 23], [7, 23], [7, 23], [8, 47], [8, 47], [8, 48], [8, 48], [6, 13], [6, 13], [6, 13], [6, 13], [6, 13], [6, 13], [6, 13], [6, 13], [7, 20], [7, 20], [7, 20], [7, 20], [8, 33], [8, 33], [8, 34], [8, 34], [8, 35], [8, 35], [8, 36], [8, 36], [8, 37], [8, 37], [8, 38], [8, 38], [7, 19], [7, 19], [7, 19], [7, 19], [8, 31], [8, 31], [8, 32], [8, 32], [6, 1], [6, 1], [6, 1], [6, 1], [6, 1], [6, 1], [6, 1], [6, 1], [6, 12], [6, 12], [6, 12], [6, 12], [6, 12], [6, 12], [6, 12], [6, 12], [8, 53], [8, 53], [8, 54], [8, 54], [7, 26], [7, 26], [7, 26], [7, 26], [8, 39], [8, 39], [8, 40], [8, 40], [8, 41], [8, 41], [8, 42], [8, 42], [8, 43], [8, 43], [8, 44], [8, 44], [7, 21], [7, 21], [7, 21], [7, 21], [7, 28], [7, 28], [7, 28], [7, 28], [8, 61], [8, 61], [8, 62], [8, 62], [8, 63], [8, 63], [8, 0], [8, 0], [8, 320], [8, 320], [8, 384], [8, 384], [5, 10], [5, 10], [5, 10], [5, 10], [5, 10], [5, 10], [5, 10], [5, 10], [5, 10], [5, 10], [5, 10], [5, 10], [5, 10], [5, 10], [5, 10], [5, 10], [5, 11], [5, 11], [5, 11], [5, 11], [5, 11], [5, 11], [5, 11], [5, 11], [5, 11], [5, 11], [5, 11], [5, 11], [5, 11], [5, 11], [5, 11], [5, 11], [7, 27], [7, 27], [7, 27], [7, 27], [8, 59], [8, 59], [8, 60], [8, 60], [9, 1472], [9, 1536], [9, 1600], [9, 1728], [7, 18], [7, 18], [7, 18], [7, 18], [7, 24], [7, 24], [7, 24], [7, 24], [8, 49], [8, 49], [8, 50], [8, 50], [8, 51], [8, 51], [8, 52], [8, 52], [7, 25], [7, 25], [7, 25], [7, 25], [8, 55], [8, 55], [8, 56], [8, 56], [8, 57], [8, 57], [8, 58], [8, 58], [6, 192], [6, 192], [6, 192], [6, 192], [6, 192], [6, 192], [6, 192], [6, 192], [6, 1664], [6, 1664], [6, 1664], [6, 1664], [6, 1664], [6, 1664], [6, 1664], [6, 1664], [8, 448], [8, 448], [8, 512], [8, 512], [9, 704], [9, 768], [8, 640], [8, 640], [8, 576], [8, 576], [9, 832], [9, 896], [9, 960], [9, 1024], [9, 1088], [9, 1152], [9, 1216], [9, 1280], [9, 1344], [9, 1408], [7, 256], [7, 256], [7, 256], [7, 256], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 2], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [4, 3], [5, 128], [5, 128], [5, 128], [5, 128], [5, 128], [5, 128], [5, 128], [5, 128], [5, 128], [5, 128], [5, 128], [5, 128], [5, 128], [5, 128], [5, 128], [5, 128], [5, 8], [5, 8], [5, 8], [5, 8], [5, 8], [5, 8], [5, 8], [5, 8], [5, 8], [5, 8], [5, 8], [5, 8], [5, 8], [5, 8], [5, 8], [5, 8], [5, 9], [5, 9], [5, 9], [5, 9], [5, 9], [5, 9], [5, 9], [5, 9], [5, 9], [5, 9], [5, 9], [5, 9], [5, 9], [5, 9], [5, 9], [5, 9], [6, 16], [6, 16], [6, 16], [6, 16], [6, 16], [6, 16], [6, 16], [6, 16], [6, 17], [6, 17], [6, 17], [6, 17], [6, 17], [6, 17], [6, 17], [6, 17], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 4], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [4, 5], [6, 14], [6, 14], [6, 14], [6, 14], [6, 14], [6, 14], [6, 14], [6, 14], [6, 15], [6, 15], [6, 15], [6, 15], [6, 15], [6, 15], [6, 15], [6, 15], [5, 64], [5, 64], [5, 64], [5, 64], [5, 64], [5, 64], [5, 64], [5, 64], [5, 64], [5, 64], [5, 64], [5, 64], [5, 64], [5, 64], [5, 64], [5, 64], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 6], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7], [4, 7]]; const blackTable1 = [[-1, -1], [-1, -1], [12, ccittEOL], [12, ccittEOL], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [-1, -1], [11, 1792], [11, 1792], [11, 1792], [11, 1792], [12, 1984], [12, 1984], [12, 2048], [12, 2048], [12, 2112], [12, 2112], [12, 2176], [12, 2176], [12, 2240], [12, 2240], [12, 2304], [12, 2304], [11, 1856], [11, 1856], [11, 1856], [11, 1856], [11, 1920], [11, 1920], [11, 1920], [11, 1920], [12, 2368], [12, 2368], [12, 2432], [12, 2432], [12, 2496], [12, 2496], [12, 2560], [12, 2560], [10, 18], [10, 18], [10, 18], [10, 18], [10, 18], [10, 18], [10, 18], [10, 18], [12, 52], [12, 52], [13, 640], [13, 704], [13, 768], [13, 832], [12, 55], [12, 55], [12, 56], [12, 56], [13, 1280], [13, 1344], [13, 1408], [13, 1472], [12, 59], [12, 59], [12, 60], [12, 60], [13, 1536], [13, 1600], [11, 24], [11, 24], [11, 24], [11, 24], [11, 25], [11, 25], [11, 25], [11, 25], [13, 1664], [13, 1728], [12, 320], [12, 320], [12, 384], [12, 384], [12, 448], [12, 448], [13, 512], [13, 576], [12, 53], [12, 53], [12, 54], [12, 54], [13, 896], [13, 960], [13, 1024], [13, 1088], [13, 1152], [13, 1216], [10, 64], [10, 64], [10, 64], [10, 64], [10, 64], [10, 64], [10, 64], [10, 64]]; const blackTable2 = [[8, 13], [8, 13], [8, 13], [8, 13], [8, 13], [8, 13], [8, 13], [8, 13], [8, 13], [8, 13], [8, 13], [8, 13], [8, 13], [8, 13], [8, 13], [8, 13], [11, 23], [11, 23], [12, 50], [12, 51], [12, 44], [12, 45], [12, 46], [12, 47], [12, 57], [12, 58], [12, 61], [12, 256], [10, 16], [10, 16], [10, 16], [10, 16], [10, 17], [10, 17], [10, 17], [10, 17], [12, 48], [12, 49], [12, 62], [12, 63], [12, 30], [12, 31], [12, 32], [12, 33], [12, 40], [12, 41], [11, 22], [11, 22], [8, 14], [8, 14], [8, 14], [8, 14], [8, 14], [8, 14], [8, 14], [8, 14], [8, 14], [8, 14], [8, 14], [8, 14], [8, 14], [8, 14], [8, 14], [8, 14], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 10], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [7, 11], [9, 15], [9, 15], [9, 15], [9, 15], [9, 15], [9, 15], [9, 15], [9, 15], [12, 128], [12, 192], [12, 26], [12, 27], [12, 28], [12, 29], [11, 19], [11, 19], [11, 20], [11, 20], [12, 34], [12, 35], [12, 36], [12, 37], [12, 38], [12, 39], [11, 21], [11, 21], [12, 42], [12, 43], [10, 0], [10, 0], [10, 0], [10, 0], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12], [7, 12]]; const blackTable3 = [[-1, -1], [-1, -1], [-1, -1], [-1, -1], [6, 9], [6, 8], [5, 7], [5, 7], [4, 6], [4, 6], [4, 6], [4, 6], [4, 5], [4, 5], [4, 5], [4, 5], [3, 1], [3, 1], [3, 1], [3, 1], [3, 1], [3, 1], [3, 1], [3, 1], [3, 4], [3, 4], [3, 4], [3, 4], [3, 4], [3, 4], [3, 4], [3, 4], [2, 3], [2, 3], [2, 3], [2, 3], [2, 3], [2, 3], [2, 3], [2, 3], [2, 3], [2, 3], [2, 3], [2, 3], [2, 3], [2, 3], [2, 3], [2, 3], [2, 2], [2, 2], [2, 2], [2, 2], [2, 2], [2, 2], [2, 2], [2, 2], [2, 2], [2, 2], [2, 2], [2, 2], [2, 2], [2, 2], [2, 2], [2, 2]]; class CCITTFaxDecoder { constructor(source, options = {}) { if (!source || typeof source.next !== "function") { throw new Error('CCITTFaxDecoder - invalid "source" parameter.'); } this.source = source; this.eof = false; this.encoding = options.K || 0; this.eoline = options.EndOfLine || false; this.byteAlign = options.EncodedByteAlign || false; this.columns = options.Columns || 1728; this.rows = options.Rows || 0; this.eoblock = options.EndOfBlock ?? true; this.black = options.BlackIs1 || false; this.codingLine = new Uint32Array(this.columns + 1); this.refLine = new Uint32Array(this.columns + 2); this.codingLine[0] = this.columns; this.codingPos = 0; this.row = 0; this.nextLine2D = this.encoding < 0; this.inputBits = 0; this.inputBuf = 0; this.outputBits = 0; this.rowsDone = false; let code1; while ((code1 = this._lookBits(12)) === 0) { this._eatBits(1); } if (code1 === 1) { this._eatBits(12); } if (this.encoding > 0) { this.nextLine2D = !this._lookBits(1); this._eatBits(1); } } readNextChar() { if (this.eof) { return -1; } const refLine = this.refLine; const codingLine = this.codingLine; const columns = this.columns; let refPos, blackPixels, bits, i; if (this.outputBits === 0) { if (this.rowsDone) { this.eof = true; } if (this.eof) { return -1; } this.err = false; let code1, code2, code3; if (this.nextLine2D) { for (i = 0; codingLine[i] < columns; ++i) { refLine[i] = codingLine[i]; } refLine[i++] = columns; refLine[i] = columns; codingLine[0] = 0; this.codingPos = 0; refPos = 0; blackPixels = 0; while (codingLine[this.codingPos] < columns) { code1 = this._getTwoDimCode(); switch (code1) { case twoDimPass: this._addPixels(refLine[refPos + 1], blackPixels); if (refLine[refPos + 1] < columns) { refPos += 2; } break; case twoDimHoriz: code1 = code2 = 0; if (blackPixels) { do { code1 += code3 = this._getBlackCode(); } while (code3 >= 64); do { code2 += code3 = this._getWhiteCode(); } while (code3 >= 64); } else { do { code1 += code3 = this._getWhiteCode(); } while (code3 >= 64); do { code2 += code3 = this._getBlackCode(); } while (code3 >= 64); } this._addPixels(codingLine[this.codingPos] + code1, blackPixels); if (codingLine[this.codingPos] < columns) { this._addPixels(codingLine[this.codingPos] + code2, blackPixels ^ 1); } while (refLine[refPos] <= codingLine[this.codingPos] && refLine[refPos] < columns) { refPos += 2; } break; case twoDimVertR3: this._addPixels(refLine[refPos] + 3, blackPixels); blackPixels ^= 1; if (codingLine[this.codingPos] < columns) { ++refPos; while (refLine[refPos] <= codingLine[this.codingPos] && refLine[refPos] < columns) { refPos += 2; } } break; case twoDimVertR2: this._addPixels(refLine[refPos] + 2, blackPixels); blackPixels ^= 1; if (codingLine[this.codingPos] < columns) { ++refPos; while (refLine[refPos] <= codingLine[this.codingPos] && refLine[refPos] < columns) { refPos += 2; } } break; case twoDimVertR1: this._addPixels(refLine[refPos] + 1, blackPixels); blackPixels ^= 1; if (codingLine[this.codingPos] < columns) { ++refPos; while (refLine[refPos] <= codingLine[this.codingPos] && refLine[refPos] < columns) { refPos += 2; } } break; case twoDimVert0: this._addPixels(refLine[refPos], blackPixels); blackPixels ^= 1; if (codingLine[this.codingPos] < columns) { ++refPos; while (refLine[refPos] <= codingLine[this.codingPos] && refLine[refPos] < columns) { refPos += 2; } } break; case twoDimVertL3: this._addPixelsNeg(refLine[refPos] - 3, blackPixels); blackPixels ^= 1; if (codingLine[this.codingPos] < columns) { if (refPos > 0) { --refPos; } else { ++refPos; } while (refLine[refPos] <= codingLine[this.codingPos] && refLine[refPos] < columns) { refPos += 2; } } break; case twoDimVertL2: this._addPixelsNeg(refLine[refPos] - 2, blackPixels); blackPixels ^= 1; if (codingLine[this.codingPos] < columns) { if (refPos > 0) { --refPos; } else { ++refPos; } while (refLine[refPos] <= codingLine[this.codingPos] && refLine[refPos] < columns) { refPos += 2; } } break; case twoDimVertL1: this._addPixelsNeg(refLine[refPos] - 1, blackPixels); blackPixels ^= 1; if (codingLine[this.codingPos] < columns) { if (refPos > 0) { --refPos; } else { ++refPos; } while (refLine[refPos] <= codingLine[this.codingPos] && refLine[refPos] < columns) { refPos += 2; } } break; case ccittEOF: this._addPixels(columns, 0); this.eof = true; break; default: (0, _util.info)("bad 2d code"); this._addPixels(columns, 0); this.err = true; } } } else { codingLine[0] = 0; this.codingPos = 0; blackPixels = 0; while (codingLine[this.codingPos] < columns) { code1 = 0; if (blackPixels) { do { code1 += code3 = this._getBlackCode(); } while (code3 >= 64); } else { do { code1 += code3 = this._getWhiteCode(); } while (code3 >= 64); } this._addPixels(codingLine[this.codingPos] + code1, blackPixels); blackPixels ^= 1; } } let gotEOL = false; if (this.byteAlign) { this.inputBits &= ~7; } if (!this.eoblock && this.row === this.rows - 1) { this.rowsDone = true; } else { code1 = this._lookBits(12); if (this.eoline) { while (code1 !== ccittEOF && code1 !== 1) { this._eatBits(1); code1 = this._lookBits(12); } } else { while (code1 === 0) { this._eatBits(1); code1 = this._lookBits(12); } } if (code1 === 1) { this._eatBits(12); gotEOL = true; } else if (code1 === ccittEOF) { this.eof = true; } } if (!this.eof && this.encoding > 0 && !this.rowsDone) { this.nextLine2D = !this._lookBits(1); this._eatBits(1); } if (this.eoblock && gotEOL && this.byteAlign) { code1 = this._lookBits(12); if (code1 === 1) { this._eatBits(12); if (this.encoding > 0) { this._lookBits(1); this._eatBits(1); } if (this.encoding >= 0) { for (i = 0; i < 4; ++i) { code1 = this._lookBits(12); if (code1 !== 1) { (0, _util.info)("bad rtc code: " + code1); } this._eatBits(12); if (this.encoding > 0) { this._lookBits(1); this._eatBits(1); } } } this.eof = true; } } else if (this.err && this.eoline) { while (true) { code1 = this._lookBits(13); if (code1 === ccittEOF) { this.eof = true; return -1; } if (code1 >> 1 === 1) { break; } this._eatBits(1); } this._eatBits(12); if (this.encoding > 0) { this._eatBits(1); this.nextLine2D = !(code1 & 1); } } this.outputBits = codingLine[0] > 0 ? codingLine[this.codingPos = 0] : codingLine[this.codingPos = 1]; this.row++; } let c; if (this.outputBits >= 8) { c = this.codingPos & 1 ? 0 : 0xff; this.outputBits -= 8; if (this.outputBits === 0 && codingLine[this.codingPos] < columns) { this.codingPos++; this.outputBits = codingLine[this.codingPos] - codingLine[this.codingPos - 1]; } } else { bits = 8; c = 0; do { if (typeof this.outputBits !== "number") { throw new _util.FormatError('Invalid /CCITTFaxDecode data, "outputBits" must be a number.'); } if (this.outputBits > bits) { c <<= bits; if (!(this.codingPos & 1)) { c |= 0xff >> 8 - bits; } this.outputBits -= bits; bits = 0; } else { c <<= this.outputBits; if (!(this.codingPos & 1)) { c |= 0xff >> 8 - this.outputBits; } bits -= this.outputBits; this.outputBits = 0; if (codingLine[this.codingPos] < columns) { this.codingPos++; this.outputBits = codingLine[this.codingPos] - codingLine[this.codingPos - 1]; } else if (bits > 0) { c <<= bits; bits = 0; } } } while (bits); } if (this.black) { c ^= 0xff; } return c; } _addPixels(a1, blackPixels) { const codingLine = this.codingLine; let codingPos = this.codingPos; if (a1 > codingLine[codingPos]) { if (a1 > this.columns) { (0, _util.info)("row is wrong length"); this.err = true; a1 = this.columns; } if (codingPos & 1 ^ blackPixels) { ++codingPos; } codingLine[codingPos] = a1; } this.codingPos = codingPos; } _addPixelsNeg(a1, blackPixels) { const codingLine = this.codingLine; let codingPos = this.codingPos; if (a1 > codingLine[codingPos]) { if (a1 > this.columns) { (0, _util.info)("row is wrong length"); this.err = true; a1 = this.columns; } if (codingPos & 1 ^ blackPixels) { ++codingPos; } codingLine[codingPos] = a1; } else if (a1 < codingLine[codingPos]) { if (a1 < 0) { (0, _util.info)("invalid code"); this.err = true; a1 = 0; } while (codingPos > 0 && a1 < codingLine[codingPos - 1]) { --codingPos; } codingLine[codingPos] = a1; } this.codingPos = codingPos; } _findTableCode(start, end, table, limit) { const limitValue = limit || 0; for (let i = start; i <= end; ++i) { let code = this._lookBits(i); if (code === ccittEOF) { return [true, 1, false]; } if (i < end) { code <<= end - i; } if (!limitValue || code >= limitValue) { const p = table[code - limitValue]; if (p[0] === i) { this._eatBits(i); return [true, p[1], true]; } } } return [false, 0, false]; } _getTwoDimCode() { let code = 0; let p; if (this.eoblock) { code = this._lookBits(7); p = twoDimTable[code]; if (p?.[0] > 0) { this._eatBits(p[0]); return p[1]; } } else { const result = this._findTableCode(1, 7, twoDimTable); if (result[0] && result[2]) { return result[1]; } } (0, _util.info)("Bad two dim code"); return ccittEOF; } _getWhiteCode() { let code = 0; let p; if (this.eoblock) { code = this._lookBits(12); if (code === ccittEOF) { return 1; } p = code >> 5 === 0 ? whiteTable1[code] : whiteTable2[code >> 3]; if (p[0] > 0) { this._eatBits(p[0]); return p[1]; } } else { let result = this._findTableCode(1, 9, whiteTable2); if (result[0]) { return result[1]; } result = this._findTableCode(11, 12, whiteTable1); if (result[0]) { return result[1]; } } (0, _util.info)("bad white code"); this._eatBits(1); return 1; } _getBlackCode() { let code, p; if (this.eoblock) { code = this._lookBits(13); if (code === ccittEOF) { return 1; } if (code >> 7 === 0) { p = blackTable1[code]; } else if (code >> 9 === 0 && code >> 7 !== 0) { p = blackTable2[(code >> 1) - 64]; } else { p = blackTable3[code >> 7]; } if (p[0] > 0) { this._eatBits(p[0]); return p[1]; } } else { let result = this._findTableCode(2, 6, blackTable3); if (result[0]) { return result[1]; } result = this._findTableCode(7, 12, blackTable2, 64); if (result[0]) { return result[1]; } result = this._findTableCode(10, 13, blackTable1); if (result[0]) { return result[1]; } } (0, _util.info)("bad black code"); this._eatBits(1); return 1; } _lookBits(n) { let c; while (this.inputBits < n) { if ((c = this.source.next()) === -1) { if (this.inputBits === 0) { return ccittEOF; } return this.inputBuf << n - this.inputBits & 0xffff >> 16 - n; } this.inputBuf = this.inputBuf << 8 | c; this.inputBits += 8; } return this.inputBuf >> this.inputBits - n & 0xffff >> 16 - n; } _eatBits(n) { if ((this.inputBits -= n) < 0) { this.inputBits = 0; } } } exports.CCITTFaxDecoder = CCITTFaxDecoder; /***/ }), /* 8 */ /***/ ((__unused_webpack_module, exports, __w_pdfjs_require__) => { Object.defineProperty(exports, "__esModule", ({ value: true })); exports.JpegImage = void 0; var _util = __w_pdfjs_require__(1); var _image_utils = __w_pdfjs_require__(9); var _core_utils = __w_pdfjs_require__(3); class JpegError extends _util.BaseException { constructor(msg) { super(`JPEG error: ${msg}`, "JpegError"); } } class DNLMarkerError extends _util.BaseException { constructor(message, scanLines) { super(message, "DNLMarkerError"); this.scanLines = scanLines; } } class EOIMarkerError extends _util.BaseException { constructor(msg) { super(msg, "EOIMarkerError"); } } const dctZigZag = new Uint8Array([0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 32, 25, 18, 11, 4, 5, 12, 19, 26, 33, 40, 48, 41, 34, 27, 20, 13, 6, 7, 14, 21, 28, 35, 42, 49, 56, 57, 50, 43, 36, 29, 22, 15, 23, 30, 37, 44, 51, 58, 59, 52, 45, 38, 31, 39, 46, 53, 60, 61, 54, 47, 55, 62, 63]); const dctCos1 = 4017; const dctSin1 = 799; const dctCos3 = 3406; const dctSin3 = 2276; const dctCos6 = 1567; const dctSin6 = 3784; const dctSqrt2 = 5793; const dctSqrt1d2 = 2896; function buildHuffmanTable(codeLengths, values) { let k = 0, i, j, length = 16; while (length > 0 && !codeLengths[length - 1]) { length--; } const code = [{ children: [], index: 0 }]; let p = code[0], q; for (i = 0; i < length; i++) { for (j = 0; j < codeLengths[i]; j++) { p = code.pop(); p.children[p.index] = values[k]; while (p.index > 0) { p = code.pop(); } p.index++; code.push(p); while (code.length <= i) { code.push(q = { children: [], index: 0 }); p.children[p.index] = q.children; p = q; } k++; } if (i + 1 < length) { code.push(q = { children: [], index: 0 }); p.children[p.index] = q.children; p = q; } } return code[0].children; } function getBlockBufferOffset(component, row, col) { return 64 * ((component.blocksPerLine + 1) * row + col); } function decodeScan(data, offset, frame, components, resetInterval, spectralStart, spectralEnd, successivePrev, successive, parseDNLMarker = false) { const mcusPerLine = frame.mcusPerLine; const progressive = frame.progressive; const startOffset = offset; let bitsData = 0, bitsCount = 0; function readBit() { if (bitsCount > 0) { bitsCount--; return bitsData >> bitsCount & 1; } bitsData = data[offset++]; if (bitsData === 0xff) { const nextByte = data[offset++]; if (nextByte) { if (nextByte === 0xdc && parseDNLMarker) { offset += 2; const scanLines = (0, _core_utils.readUint16)(data, offset); offset += 2; if (scanLines > 0 && scanLines !== frame.scanLines) { throw new DNLMarkerError("Found DNL marker (0xFFDC) while parsing scan data", scanLines); } } else if (nextByte === 0xd9) { if (parseDNLMarker) { const maybeScanLines = blockRow * (frame.precision === 8 ? 8 : 0); if (maybeScanLines > 0 && Math.round(frame.scanLines / maybeScanLines) >= 5) { throw new DNLMarkerError("Found EOI marker (0xFFD9) while parsing scan data, " + "possibly caused by incorrect `scanLines` parameter", maybeScanLines); } } throw new EOIMarkerError("Found EOI marker (0xFFD9) while parsing scan data"); } throw new JpegError(`unexpected marker ${(bitsData << 8 | nextByte).toString(16)}`); } } bitsCount = 7; return bitsData >>> 7; } function decodeHuffman(tree) { let node = tree; while (true) { node = node[readBit()]; switch (typeof node) { case "number": return node; case "object": continue; } throw new JpegError("invalid huffman sequence"); } } function receive(length) { let n = 0; while (length > 0) { n = n << 1 | readBit(); length--; } return n; } function receiveAndExtend(length) { if (length === 1) { return readBit() === 1 ? 1 : -1; } const n = receive(length); if (n >= 1 << length - 1) { return n; } return n + (-1 << length) + 1; } function decodeBaseline(component, blockOffset) { const t = decodeHuffman(component.huffmanTableDC); const diff = t === 0 ? 0 : receiveAndExtend(t); component.blockData[blockOffset] = component.pred += diff; let k = 1; while (k < 64) { const rs = decodeHuffman(component.huffmanTableAC); const s = rs & 15, r = rs >> 4; if (s === 0) { if (r < 15) { break; } k += 16; continue; } k += r; const z = dctZigZag[k]; component.blockData[blockOffset + z] = receiveAndExtend(s); k++; } } function decodeDCFirst(component, blockOffset) { const t = decodeHuffman(component.huffmanTableDC); const diff = t === 0 ? 0 : receiveAndExtend(t) << successive; component.blockData[blockOffset] = component.pred += diff; } function decodeDCSuccessive(component, blockOffset) { component.blockData[blockOffset] |= readBit() << successive; } let eobrun = 0; function decodeACFirst(component, blockOffset) { if (eobrun > 0) { eobrun--; return; } let k = spectralStart; const e = spectralEnd; while (k <= e) { const rs = decodeHuffman(component.huffmanTableAC); const s = rs & 15, r = rs >> 4; if (s === 0) { if (r < 15) { eobrun = receive(r) + (1 << r) - 1; break; } k += 16; continue; } k += r; const z = dctZigZag[k]; component.blockData[blockOffset + z] = receiveAndExtend(s) * (1 << successive); k++; } } let successiveACState = 0, successiveACNextValue; function decodeACSuccessive(component, blockOffset) { let k = spectralStart; const e = spectralEnd; let r = 0; let s; let rs; while (k <= e) { const offsetZ = blockOffset + dctZigZag[k]; const sign = component.blockData[offsetZ] < 0 ? -1 : 1; switch (successiveACState) { case 0: rs = decodeHuffman(component.huffmanTableAC); s = rs & 15; r = rs >> 4; if (s === 0) { if (r < 15) { eobrun = receive(r) + (1 << r); successiveACState = 4; } else { r = 16; successiveACState = 1; } } else { if (s !== 1) { throw new JpegError("invalid ACn encoding"); } successiveACNextValue = receiveAndExtend(s); successiveACState = r ? 2 : 3; } continue; case 1: case 2: if (component.blockData[offsetZ]) { component.blockData[offsetZ] += sign * (readBit() << successive); } else { r--; if (r === 0) { successiveACState = successiveACState === 2 ? 3 : 0; } } break; case 3: if (component.blockData[offsetZ]) { component.blockData[offsetZ] += sign * (readBit() << successive); } else { component.blockData[offsetZ] = successiveACNextValue << successive; successiveACState = 0; } break; case 4: if (component.blockData[offsetZ]) { component.blockData[offsetZ] += sign * (readBit() << successive); } break; } k++; } if (successiveACState === 4) { eobrun--; if (eobrun === 0) { successiveACState = 0; } } } let blockRow = 0; function decodeMcu(component, decode, mcu, row, col) { const mcuRow = mcu / mcusPerLine | 0; const mcuCol = mcu % mcusPerLine; blockRow = mcuRow * component.v + row; const blockCol = mcuCol * component.h + col; const blockOffset = getBlockBufferOffset(component, blockRow, blockCol); decode(component, blockOffset); } function decodeBlock(component, decode, mcu) { blockRow = mcu / component.blocksPerLine | 0; const blockCol = mcu % component.blocksPerLine; const blockOffset = getBlockBufferOffset(component, blockRow, blockCol); decode(component, blockOffset); } const componentsLength = components.length; let component, i, j, k, n; let decodeFn; if (progressive) { if (spectralStart === 0) { decodeFn = successivePrev === 0 ? decodeDCFirst : decodeDCSuccessive; } else { decodeFn = successivePrev === 0 ? decodeACFirst : decodeACSuccessive; } } else { decodeFn = decodeBaseline; } let mcu = 0, fileMarker; const mcuExpected = componentsLength === 1 ? components[0].blocksPerLine * components[0].blocksPerColumn : mcusPerLine * frame.mcusPerColumn; let h, v; while (mcu <= mcuExpected) { const mcuToRead = resetInterval ? Math.min(mcuExpected - mcu, resetInterval) : mcuExpected; if (mcuToRead > 0) { for (i = 0; i < componentsLength; i++) { components[i].pred = 0; } eobrun = 0; if (componentsLength === 1) { component = components[0]; for (n = 0; n < mcuToRead; n++) { decodeBlock(component, decodeFn, mcu); mcu++; } } else { for (n = 0; n < mcuToRead; n++) { for (i = 0; i < componentsLength; i++) { component = components[i]; h = component.h; v = component.v; for (j = 0; j < v; j++) { for (k = 0; k < h; k++) { decodeMcu(component, decodeFn, mcu, j, k); } } } mcu++; } } } bitsCount = 0; fileMarker = findNextFileMarker(data, offset); if (!fileMarker) { break; } if (fileMarker.invalid) { const partialMsg = mcuToRead > 0 ? "unexpected" : "excessive"; (0, _util.warn)(`decodeScan - ${partialMsg} MCU data, current marker is: ${fileMarker.invalid}`); offset = fileMarker.offset; } if (fileMarker.marker >= 0xffd0 && fileMarker.marker <= 0xffd7) { offset += 2; } else { break; } } return offset - startOffset; } function quantizeAndInverse(component, blockBufferOffset, p) { const qt = component.quantizationTable, blockData = component.blockData; let v0, v1, v2, v3, v4, v5, v6, v7; let p0, p1, p2, p3, p4, p5, p6, p7; let t; if (!qt) { throw new JpegError("missing required Quantization Table."); } for (let row = 0; row < 64; row += 8) { p0 = blockData[blockBufferOffset + row]; p1 = blockData[blockBufferOffset + row + 1]; p2 = blockData[blockBufferOffset + row + 2]; p3 = blockData[blockBufferOffset + row + 3]; p4 = blockData[blockBufferOffset + row + 4]; p5 = blockData[blockBufferOffset + row + 5]; p6 = blockData[blockBufferOffset + row + 6]; p7 = blockData[blockBufferOffset + row + 7]; p0 *= qt[row]; if ((p1 | p2 | p3 | p4 | p5 | p6 | p7) === 0) { t = dctSqrt2 * p0 + 512 >> 10; p[row] = t; p[row + 1] = t; p[row + 2] = t; p[row + 3] = t; p[row + 4] = t; p[row + 5] = t; p[row + 6] = t; p[row + 7] = t; continue; } p1 *= qt[row + 1]; p2 *= qt[row + 2]; p3 *= qt[row + 3]; p4 *= qt[row + 4]; p5 *= qt[row + 5]; p6 *= qt[row + 6]; p7 *= qt[row + 7]; v0 = dctSqrt2 * p0 + 128 >> 8; v1 = dctSqrt2 * p4 + 128 >> 8; v2 = p2; v3 = p6; v4 = dctSqrt1d2 * (p1 - p7) + 128 >> 8; v7 = dctSqrt1d2 * (p1 + p7) + 128 >> 8; v5 = p3 << 4; v6 = p5 << 4; v0 = v0 + v1 + 1 >> 1; v1 = v0 - v1; t = v2 * dctSin6 + v3 * dctCos6 + 128 >> 8; v2 = v2 * dctCos6 - v3 * dctSin6 + 128 >> 8; v3 = t; v4 = v4 + v6 + 1 >> 1; v6 = v4 - v6; v7 = v7 + v5 + 1 >> 1; v5 = v7 - v5; v0 = v0 + v3 + 1 >> 1; v3 = v0 - v3; v1 = v1 + v2 + 1 >> 1; v2 = v1 - v2; t = v4 * dctSin3 + v7 * dctCos3 + 2048 >> 12; v4 = v4 * dctCos3 - v7 * dctSin3 + 2048 >> 12; v7 = t; t = v5 * dctSin1 + v6 * dctCos1 + 2048 >> 12; v5 = v5 * dctCos1 - v6 * dctSin1 + 2048 >> 12; v6 = t; p[row] = v0 + v7; p[row + 7] = v0 - v7; p[row + 1] = v1 + v6; p[row + 6] = v1 - v6; p[row + 2] = v2 + v5; p[row + 5] = v2 - v5; p[row + 3] = v3 + v4; p[row + 4] = v3 - v4; } for (let col = 0; col < 8; ++col) { p0 = p[col]; p1 = p[col + 8]; p2 = p[col + 16]; p3 = p[col + 24]; p4 = p[col + 32]; p5 = p[col + 40]; p6 = p[col + 48]; p7 = p[col + 56]; if ((p1 | p2 | p3 | p4 | p5 | p6 | p7) === 0) { t = dctSqrt2 * p0 + 8192 >> 14; if (t < -2040) { t = 0; } else if (t >= 2024) { t = 255; } else { t = t + 2056 >> 4; } blockData[blockBufferOffset + col] = t; blockData[blockBufferOffset + col + 8] = t; blockData[blockBufferOffset + col + 16] = t; blockData[blockBufferOffset + col + 24] = t; blockData[blockBufferOffset + col + 32] = t; blockData[blockBufferOffset + col + 40] = t; blockData[blockBufferOffset + col + 48] = t; blockData[blockBufferOffset + col + 56] = t; continue; } v0 = dctSqrt2 * p0 + 2048 >> 12; v1 = dctSqrt2 * p4 + 2048 >> 12; v2 = p2; v3 = p6; v4 = dctSqrt1d2 * (p1 - p7) + 2048 >> 12; v7 = dctSqrt1d2 * (p1 + p7) + 2048 >> 12; v5 = p3; v6 = p5; v0 = (v0 + v1 + 1 >> 1) + 4112; v1 = v0 - v1; t = v2 * dctSin6 + v3 * dctCos6 + 2048 >> 12; v2 = v2 * dctCos6 - v3 * dctSin6 + 2048 >> 12; v3 = t; v4 = v4 + v6 + 1 >> 1; v6 = v4 - v6; v7 = v7 + v5 + 1 >> 1; v5 = v7 - v5; v0 = v0 + v3 + 1 >> 1; v3 = v0 - v3; v1 = v1 + v2 + 1 >> 1; v2 = v1 - v2; t = v4 * dctSin3 + v7 * dctCos3 + 2048 >> 12; v4 = v4 * dctCos3 - v7 * dctSin3 + 2048 >> 12; v7 = t; t = v5 * dctSin1 + v6 * dctCos1 + 2048 >> 12; v5 = v5 * dctCos1 - v6 * dctSin1 + 2048 >> 12; v6 = t; p0 = v0 + v7; p7 = v0 - v7; p1 = v1 + v6; p6 = v1 - v6; p2 = v2 + v5; p5 = v2 - v5; p3 = v3 + v4; p4 = v3 - v4; if (p0 < 16) { p0 = 0; } else if (p0 >= 4080) { p0 = 255; } else { p0 >>= 4; } if (p1 < 16) { p1 = 0; } else if (p1 >= 4080) { p1 = 255; } else { p1 >>= 4; } if (p2 < 16) { p2 = 0; } else if (p2 >= 4080) { p2 = 255; } else { p2 >>= 4; } if (p3 < 16) { p3 = 0; } else if (p3 >= 4080) { p3 = 255; } else { p3 >>= 4; } if (p4 < 16) { p4 = 0; } else if (p4 >= 4080) { p4 = 255; } else { p4 >>= 4; } if (p5 < 16) { p5 = 0; } else if (p5 >= 4080) { p5 = 255; } else { p5 >>= 4; } if (p6 < 16) { p6 = 0; } else if (p6 >= 4080) { p6 = 255; } else { p6 >>= 4; } if (p7 < 16) { p7 = 0; } else if (p7 >= 4080) { p7 = 255; } else { p7 >>= 4; } blockData[blockBufferOffset + col] = p0; blockData[blockBufferOffset + col + 8] = p1; blockData[blockBufferOffset + col + 16] = p2; blockData[blockBufferOffset + col + 24] = p3; blockData[blockBufferOffset + col + 32] = p4; blockData[blockBufferOffset + col + 40] = p5; blockData[blockBufferOffset + col + 48] = p6; blockData[blockBufferOffset + col + 56] = p7; } } function buildComponentData(frame, component) { const blocksPerLine = component.blocksPerLine; const blocksPerColumn = component.blocksPerColumn; const computationBuffer = new Int16Array(64); for (let blockRow = 0; blockRow < blocksPerColumn; blockRow++) { for (let blockCol = 0; blockCol < blocksPerLine; blockCol++) { const offset = getBlockBufferOffset(component, blockRow, blockCol); quantizeAndInverse(component, offset, computationBuffer); } } return component.blockData; } function findNextFileMarker(data, currentPos, startPos = currentPos) { const maxPos = data.length - 1; let newPos = startPos < currentPos ? startPos : currentPos; if (currentPos >= maxPos) { return null; } const currentMarker = (0, _core_utils.readUint16)(data, currentPos); if (currentMarker >= 0xffc0 && currentMarker <= 0xfffe) { return { invalid: null, marker: currentMarker, offset: currentPos }; } let newMarker = (0, _core_utils.readUint16)(data, newPos); while (!(newMarker >= 0xffc0 && newMarker <= 0xfffe)) { if (++newPos >= maxPos) { return null; } newMarker = (0, _core_utils.readUint16)(data, newPos); } return { invalid: currentMarker.toString(16), marker: newMarker, offset: newPos }; } class JpegImage { constructor({ decodeTransform = null, colorTransform = -1 } = {}) { this._decodeTransform = decodeTransform; this._colorTransform = colorTransform; } parse(data, { dnlScanLines = null } = {}) { function readDataBlock() { const length = (0, _core_utils.readUint16)(data, offset); offset += 2; let endOffset = offset + length - 2; const fileMarker = findNextFileMarker(data, endOffset, offset); if (fileMarker?.invalid) { (0, _util.warn)("readDataBlock - incorrect length, current marker is: " + fileMarker.invalid); endOffset = fileMarker.offset; } const array = data.subarray(offset, endOffset); offset += array.length; return array; } function prepareComponents(frame) { const mcusPerLine = Math.ceil(frame.samplesPerLine / 8 / frame.maxH); const mcusPerColumn = Math.ceil(frame.scanLines / 8 / frame.maxV); for (const component of frame.components) { const blocksPerLine = Math.ceil(Math.ceil(frame.samplesPerLine / 8) * component.h / frame.maxH); const blocksPerColumn = Math.ceil(Math.ceil(frame.scanLines / 8) * component.v / frame.maxV); const blocksPerLineForMcu = mcusPerLine * component.h; const blocksPerColumnForMcu = mcusPerColumn * component.v; const blocksBufferSize = 64 * blocksPerColumnForMcu * (blocksPerLineForMcu + 1); component.blockData = new Int16Array(blocksBufferSize); component.blocksPerLine = blocksPerLine; component.blocksPerColumn = blocksPerColumn; } frame.mcusPerLine = mcusPerLine; frame.mcusPerColumn = mcusPerColumn; } let offset = 0; let jfif = null; let adobe = null; let frame, resetInterval; let numSOSMarkers = 0; const quantizationTables = []; const huffmanTablesAC = [], huffmanTablesDC = []; let fileMarker = (0, _core_utils.readUint16)(data, offset); offset += 2; if (fileMarker !== 0xffd8) { throw new JpegError("SOI not found"); } fileMarker = (0, _core_utils.readUint16)(data, offset); offset += 2; markerLoop: while (fileMarker !== 0xffd9) { let i, j, l; switch (fileMarker) { case 0xffe0: case 0xffe1: case 0xffe2: case 0xffe3: case 0xffe4: case 0xffe5: case 0xffe6: case 0xffe7: case 0xffe8: case 0xffe9: case 0xffea: case 0xffeb: case 0xffec: case 0xffed: case 0xffee: case 0xffef: case 0xfffe: const appData = readDataBlock(); if (fileMarker === 0xffe0) { if (appData[0] === 0x4a && appData[1] === 0x46 && appData[2] === 0x49 && appData[3] === 0x46 && appData[4] === 0) { jfif = { version: { major: appData[5], minor: appData[6] }, densityUnits: appData[7], xDensity: appData[8] << 8 | appData[9], yDensity: appData[10] << 8 | appData[11], thumbWidth: appData[12], thumbHeight: appData[13], thumbData: appData.subarray(14, 14 + 3 * appData[12] * appData[13]) }; } } if (fileMarker === 0xffee) { if (appData[0] === 0x41 && appData[1] === 0x64 && appData[2] === 0x6f && appData[3] === 0x62 && appData[4] === 0x65) { adobe = { version: appData[5] << 8 | appData[6], flags0: appData[7] << 8 | appData[8], flags1: appData[9] << 8 | appData[10], transformCode: appData[11] }; } } break; case 0xffdb: const quantizationTablesLength = (0, _core_utils.readUint16)(data, offset); offset += 2; const quantizationTablesEnd = quantizationTablesLength + offset - 2; let z; while (offset < quantizationTablesEnd) { const quantizationTableSpec = data[offset++]; const tableData = new Uint16Array(64); if (quantizationTableSpec >> 4 === 0) { for (j = 0; j < 64; j++) { z = dctZigZag[j]; tableData[z] = data[offset++]; } } else if (quantizationTableSpec >> 4 === 1) { for (j = 0; j < 64; j++) { z = dctZigZag[j]; tableData[z] = (0, _core_utils.readUint16)(data, offset); offset += 2; } } else { throw new JpegError("DQT - invalid table spec"); } quantizationTables[quantizationTableSpec & 15] = tableData; } break; case 0xffc0: case 0xffc1: case 0xffc2: if (frame) { throw new JpegError("Only single frame JPEGs supported"); } offset += 2; frame = {}; frame.extended = fileMarker === 0xffc1; frame.progressive = fileMarker === 0xffc2; frame.precision = data[offset++]; const sofScanLines = (0, _core_utils.readUint16)(data, offset); offset += 2; frame.scanLines = dnlScanLines || sofScanLines; frame.samplesPerLine = (0, _core_utils.readUint16)(data, offset); offset += 2; frame.components = []; frame.componentIds = {}; const componentsCount = data[offset++]; let maxH = 0, maxV = 0; for (i = 0; i < componentsCount; i++) { const componentId = data[offset]; const h = data[offset + 1] >> 4; const v = data[offset + 1] & 15; if (maxH < h) { maxH = h; } if (maxV < v) { maxV = v; } const qId = data[offset + 2]; l = frame.components.push({ h, v, quantizationId: qId, quantizationTable: null }); frame.componentIds[componentId] = l - 1; offset += 3; } frame.maxH = maxH; frame.maxV = maxV; prepareComponents(frame); break; case 0xffc4: const huffmanLength = (0, _core_utils.readUint16)(data, offset); offset += 2; for (i = 2; i < huffmanLength;) { const huffmanTableSpec = data[offset++]; const codeLengths = new Uint8Array(16); let codeLengthSum = 0; for (j = 0; j < 16; j++, offset++) { codeLengthSum += codeLengths[j] = data[offset]; } const huffmanValues = new Uint8Array(codeLengthSum); for (j = 0; j < codeLengthSum; j++, offset++) { huffmanValues[j] = data[offset]; } i += 17 + codeLengthSum; (huffmanTableSpec >> 4 === 0 ? huffmanTablesDC : huffmanTablesAC)[huffmanTableSpec & 15] = buildHuffmanTable(codeLengths, huffmanValues); } break; case 0xffdd: offset += 2; resetInterval = (0, _core_utils.readUint16)(data, offset); offset += 2; break; case 0xffda: const parseDNLMarker = ++numSOSMarkers === 1 && !dnlScanLines; offset += 2; const selectorsCount = data[offset++], components = []; for (i = 0; i < selectorsCount; i++) { const index = data[offset++]; const componentIndex = frame.componentIds[index]; const component = frame.components[componentIndex]; component.index = index; const tableSpec = data[offset++]; component.huffmanTableDC = huffmanTablesDC[tableSpec >> 4]; component.huffmanTableAC = huffmanTablesAC[tableSpec & 15]; components.push(component); } const spectralStart = data[offset++], spectralEnd = data[offset++], successiveApproximation = data[offset++]; try { const processed = decodeScan(data, offset, frame, components, resetInterval, spectralStart, spectralEnd, successiveApproximation >> 4, successiveApproximation & 15, parseDNLMarker); offset += processed; } catch (ex) { if (ex instanceof DNLMarkerError) { (0, _util.warn)(`${ex.message} -- attempting to re-parse the JPEG image.`); return this.parse(data, { dnlScanLines: ex.scanLines }); } else if (ex instanceof EOIMarkerError) { (0, _util.warn)(`${ex.message} -- ignoring the rest of the image data.`); break markerLoop; } throw ex; } break; case 0xffdc: offset += 4; break; case 0xffff: if (data[offset] !== 0xff) { offset--; } break; default: const nextFileMarker = findNextFileMarker(data, offset - 2, offset - 3); if (nextFileMarker?.invalid) { (0, _util.warn)("JpegImage.parse - unexpected data, current marker is: " + nextFileMarker.invalid); offset = nextFileMarker.offset; break; } if (!nextFileMarker || offset >= data.length - 1) { (0, _util.warn)("JpegImage.parse - reached the end of the image data " + "without finding an EOI marker (0xFFD9)."); break markerLoop; } throw new JpegError("JpegImage.parse - unknown marker: " + fileMarker.toString(16)); } fileMarker = (0, _core_utils.readUint16)(data, offset); offset += 2; } this.width = frame.samplesPerLine; this.height = frame.scanLines; this.jfif = jfif; this.adobe = adobe; this.components = []; for (const component of frame.components) { const quantizationTable = quantizationTables[component.quantizationId]; if (quantizationTable) { component.quantizationTable = quantizationTable; } this.components.push({ index: component.index, output: buildComponentData(frame, component), scaleX: component.h / frame.maxH, scaleY: component.v / frame.maxV, blocksPerLine: component.blocksPerLine, blocksPerColumn: component.blocksPerColumn }); } this.numComponents = this.components.length; return undefined; } _getLinearizedBlockData(width, height, isSourcePDF = false) { const scaleX = this.width / width, scaleY = this.height / height; let component, componentScaleX, componentScaleY, blocksPerScanline; let x, y, i, j, k; let index; let offset = 0; let output; const numComponents = this.components.length; const dataLength = width * height * numComponents; const data = new Uint8ClampedArray(dataLength); const xScaleBlockOffset = new Uint32Array(width); const mask3LSB = 0xfffffff8; let lastComponentScaleX; for (i = 0; i < numComponents; i++) { component = this.components[i]; componentScaleX = component.scaleX * scaleX; componentScaleY = component.scaleY * scaleY; offset = i; output = component.output; blocksPerScanline = component.blocksPerLine + 1 << 3; if (componentScaleX !== lastComponentScaleX) { for (x = 0; x < width; x++) { j = 0 | x * componentScaleX; xScaleBlockOffset[x] = (j & mask3LSB) << 3 | j & 7; } lastComponentScaleX = componentScaleX; } for (y = 0; y < height; y++) { j = 0 | y * componentScaleY; index = blocksPerScanline * (j & mask3LSB) | (j & 7) << 3; for (x = 0; x < width; x++) { data[offset] = output[index + xScaleBlockOffset[x]]; offset += numComponents; } } } let transform = this._decodeTransform; if (!isSourcePDF && numComponents === 4 && !transform) { transform = new Int32Array([-256, 255, -256, 255, -256, 255, -256, 255]); } if (transform) { for (i = 0; i < dataLength;) { for (j = 0, k = 0; j < numComponents; j++, i++, k += 2) { data[i] = (data[i] * transform[k] >> 8) + transform[k + 1]; } } } return data; } get _isColorConversionNeeded() { if (this.adobe) { return !!this.adobe.transformCode; } if (this.numComponents === 3) { if (this._colorTransform === 0) { return false; } else if (this.components[0].index === 0x52 && this.components[1].index === 0x47 && this.components[2].index === 0x42) { return false; } return true; } if (this._colorTransform === 1) { return true; } return false; } _convertYccToRgb(data) { let Y, Cb, Cr; for (let i = 0, length = data.length; i < length; i += 3) { Y = data[i]; Cb = data[i + 1]; Cr = data[i + 2]; data[i] = Y - 179.456 + 1.402 * Cr; data[i + 1] = Y + 135.459 - 0.344 * Cb - 0.714 * Cr; data[i + 2] = Y - 226.816 + 1.772 * Cb; } return data; } _convertYccToRgba(data, out) { for (let i = 0, j = 0, length = data.length; i < length; i += 3, j += 4) { const Y = data[i]; const Cb = data[i + 1]; const Cr = data[i + 2]; out[j] = Y - 179.456 + 1.402 * Cr; out[j + 1] = Y + 135.459 - 0.344 * Cb - 0.714 * Cr; out[j + 2] = Y - 226.816 + 1.772 * Cb; out[j + 3] = 255; } return out; } _convertYcckToRgb(data) { let Y, Cb, Cr, k; let offset = 0; for (let i = 0, length = data.length; i < length; i += 4) { Y = data[i]; Cb = data[i + 1]; Cr = data[i + 2]; k = data[i + 3]; data[offset++] = -122.67195406894 + Cb * (-6.60635669420364e-5 * Cb + 0.000437130475926232 * Cr - 5.4080610064599e-5 * Y + 0.00048449797120281 * k - 0.154362151871126) + Cr * (-0.000957964378445773 * Cr + 0.000817076911346625 * Y - 0.00477271405408747 * k + 1.53380253221734) + Y * (0.000961250184130688 * Y - 0.00266257332283933 * k + 0.48357088451265) + k * (-0.000336197177618394 * k + 0.484791561490776); data[offset++] = 107.268039397724 + Cb * (2.19927104525741e-5 * Cb - 0.000640992018297945 * Cr + 0.000659397001245577 * Y + 0.000426105652938837 * k - 0.176491792462875) + Cr * (-0.000778269941513683 * Cr + 0.00130872261408275 * Y + 0.000770482631801132 * k - 0.151051492775562) + Y * (0.00126935368114843 * Y - 0.00265090189010898 * k + 0.25802910206845) + k * (-0.000318913117588328 * k - 0.213742400323665); data[offset++] = -20.810012546947 + Cb * (-0.000570115196973677 * Cb - 2.63409051004589e-5 * Cr + 0.0020741088115012 * Y - 0.00288260236853442 * k + 0.814272968359295) + Cr * (-1.53496057440975e-5 * Cr - 0.000132689043961446 * Y + 0.000560833691242812 * k - 0.195152027534049) + Y * (0.00174418132927582 * Y - 0.00255243321439347 * k + 0.116935020465145) + k * (-0.000343531996510555 * k + 0.24165260232407); } return data.subarray(0, offset); } _convertYcckToRgba(data) { for (let i = 0, length = data.length; i < length; i += 4) { const Y = data[i]; const Cb = data[i + 1]; const Cr = data[i + 2]; const k = data[i + 3]; data[i] = -122.67195406894 + Cb * (-6.60635669420364e-5 * Cb + 0.000437130475926232 * Cr - 5.4080610064599e-5 * Y + 0.00048449797120281 * k - 0.154362151871126) + Cr * (-0.000957964378445773 * Cr + 0.000817076911346625 * Y - 0.00477271405408747 * k + 1.53380253221734) + Y * (0.000961250184130688 * Y - 0.00266257332283933 * k + 0.48357088451265) + k * (-0.000336197177618394 * k + 0.484791561490776); data[i + 1] = 107.268039397724 + Cb * (2.19927104525741e-5 * Cb - 0.000640992018297945 * Cr + 0.000659397001245577 * Y + 0.000426105652938837 * k - 0.176491792462875) + Cr * (-0.000778269941513683 * Cr + 0.00130872261408275 * Y + 0.000770482631801132 * k - 0.151051492775562) + Y * (0.00126935368114843 * Y - 0.00265090189010898 * k + 0.25802910206845) + k * (-0.000318913117588328 * k - 0.213742400323665); data[i + 2] = -20.810012546947 + Cb * (-0.000570115196973677 * Cb - 2.63409051004589e-5 * Cr + 0.0020741088115012 * Y - 0.00288260236853442 * k + 0.814272968359295) + Cr * (-1.53496057440975e-5 * Cr - 0.000132689043961446 * Y + 0.000560833691242812 * k - 0.195152027534049) + Y * (0.00174418132927582 * Y - 0.00255243321439347 * k + 0.116935020465145) + k * (-0.000343531996510555 * k + 0.24165260232407); data[i + 3] = 255; } return data; } _convertYcckToCmyk(data) { let Y, Cb, Cr; for (let i = 0, length = data.length; i < length; i += 4) { Y = data[i]; Cb = data[i + 1]; Cr = data[i + 2]; data[i] = 434.456 - Y - 1.402 * Cr; data[i + 1] = 119.541 - Y + 0.344 * Cb + 0.714 * Cr; data[i + 2] = 481.816 - Y - 1.772 * Cb; } return data; } _convertCmykToRgb(data) { let c, m, y, k; let offset = 0; for (let i = 0, length = data.length; i < length; i += 4) { c = data[i]; m = data[i + 1]; y = data[i + 2]; k = data[i + 3]; data[offset++] = 255 + c * (-0.00006747147073602441 * c + 0.0008379262121013727 * m + 0.0002894718188643294 * y + 0.003264231057537806 * k - 1.1185611867203937) + m * (0.000026374107616089405 * m - 0.00008626949158638572 * y - 0.0002748769067499491 * k - 0.02155688794978967) + y * (-0.00003878099212869363 * y - 0.0003267808279485286 * k + 0.0686742238595345) - k * (0.0003361971776183937 * k + 0.7430659151342254); data[offset++] = 255 + c * (0.00013596372813588848 * c + 0.000924537132573585 * m + 0.00010567359618683593 * y + 0.0004791864687436512 * k - 0.3109689587515875) + m * (-0.00023545346108370344 * m + 0.0002702845253534714 * y + 0.0020200308977307156 * k - 0.7488052167015494) + y * (0.00006834815998235662 * y + 0.00015168452363460973 * k - 0.09751927774728933) - k * (0.0003189131175883281 * k + 0.7364883807733168); data[offset++] = 255 + c * (0.000013598650411385307 * c + 0.00012423956175490851 * m + 0.0004751985097583589 * y - 0.0000036729317476630422 * k - 0.05562186980264034) + m * (0.00016141380598724676 * m + 0.0009692239130725186 * y + 0.0007782692450036253 * k - 0.44015232367526463) + y * (5.068882914068769e-7 * y + 0.0017778369011375071 * k - 0.7591454649749609) - k * (0.0003435319965105553 * k + 0.7063770186160144); } return data.subarray(0, offset); } _convertCmykToRgba(data) { for (let i = 0, length = data.length; i < length; i += 4) { const c = data[i]; const m = data[i + 1]; const y = data[i + 2]; const k = data[i + 3]; data[i] = 255 + c * (-0.00006747147073602441 * c + 0.0008379262121013727 * m + 0.0002894718188643294 * y + 0.003264231057537806 * k - 1.1185611867203937) + m * (0.000026374107616089405 * m - 0.00008626949158638572 * y - 0.0002748769067499491 * k - 0.02155688794978967) + y * (-0.00003878099212869363 * y - 0.0003267808279485286 * k + 0.0686742238595345) - k * (0.0003361971776183937 * k + 0.7430659151342254); data[i + 1] = 255 + c * (0.00013596372813588848 * c + 0.000924537132573585 * m + 0.00010567359618683593 * y + 0.0004791864687436512 * k - 0.3109689587515875) + m * (-0.00023545346108370344 * m + 0.0002702845253534714 * y + 0.0020200308977307156 * k - 0.7488052167015494) + y * (0.00006834815998235662 * y + 0.00015168452363460973 * k - 0.09751927774728933) - k * (0.0003189131175883281 * k + 0.7364883807733168); data[i + 2] = 255 + c * (0.000013598650411385307 * c + 0.00012423956175490851 * m + 0.0004751985097583589 * y - 0.0000036729317476630422 * k - 0.05562186980264034) + m * (0.00016141380598724676 * m + 0.0009692239130725186 * y + 0.0007782692450036253 * k - 0.44015232367526463) + y * (5.068882914068769e-7 * y + 0.0017778369011375071 * k - 0.7591454649749609) - k * (0.0003435319965105553 * k + 0.7063770186160144); data[i + 3] = 255; } return data; } getData({ width, height, forceRGBA = false, forceRGB = false, isSourcePDF = false }) { if (this.numComponents > 4) { throw new JpegError("Unsupported color mode"); } const data = this._getLinearizedBlockData(width, height, isSourcePDF); if (this.numComponents === 1 && (forceRGBA || forceRGB)) { const len = data.length * (forceRGBA ? 4 : 3); const rgbaData = new Uint8ClampedArray(len); let offset = 0; if (forceRGBA) { (0, _image_utils.grayToRGBA)(data, new Uint32Array(rgbaData.buffer)); } else { for (const grayColor of data) { rgbaData[offset++] = grayColor; rgbaData[offset++] = grayColor; rgbaData[offset++] = grayColor; } } return rgbaData; } else if (this.numComponents === 3 && this._isColorConversionNeeded) { if (forceRGBA) { const rgbaData = new Uint8ClampedArray(data.length / 3 * 4); return this._convertYccToRgba(data, rgbaData); } return this._convertYccToRgb(data); } else if (this.numComponents === 4) { if (this._isColorConversionNeeded) { if (forceRGBA) { return this._convertYcckToRgba(data); } if (forceRGB) { return this._convertYcckToRgb(data); } return this._convertYcckToCmyk(data); } else if (forceRGBA) { return this._convertCmykToRgba(data); } else if (forceRGB) { return this._convertCmykToRgb(data); } } return data; } } exports.JpegImage = JpegImage; /***/ }), /* 9 */ /***/ ((__unused_webpack_module, exports, __w_pdfjs_require__) => { Object.defineProperty(exports, "__esModule", ({ value: true })); exports.convertBlackAndWhiteToRGBA = convertBlackAndWhiteToRGBA; exports.convertToRGBA = convertToRGBA; exports.grayToRGBA = grayToRGBA; var _util = __w_pdfjs_require__(1); function convertToRGBA(params) { switch (params.kind) { case _util.ImageKind.GRAYSCALE_1BPP: return convertBlackAndWhiteToRGBA(params); case _util.ImageKind.RGB_24BPP: return convertRGBToRGBA(params); } return null; } function convertBlackAndWhiteToRGBA({ src, srcPos = 0, dest, width, height, nonBlackColor = 0xffffffff, inverseDecode = false }) { const black = _util.FeatureTest.isLittleEndian ? 0xff000000 : 0x000000ff; const [zeroMapping, oneMapping] = inverseDecode ? [nonBlackColor, black] : [black, nonBlackColor]; const widthInSource = width >> 3; const widthRemainder = width & 7; const srcLength = src.length; dest = new Uint32Array(dest.buffer); let destPos = 0; for (let i = 0; i < height; i++) { for (const max = srcPos + widthInSource; srcPos < max; srcPos++) { const elem = srcPos < srcLength ? src[srcPos] : 255; dest[destPos++] = elem & 0b10000000 ? oneMapping : zeroMapping; dest[destPos++] = elem & 0b1000000 ? oneMapping : zeroMapping; dest[destPos++] = elem & 0b100000 ? oneMapping : zeroMapping; dest[destPos++] = elem & 0b10000 ? oneMapping : zeroMapping; dest[destPos++] = elem & 0b1000 ? oneMapping : zeroMapping; dest[destPos++] = elem & 0b100 ? oneMapping : zeroMapping; dest[destPos++] = elem & 0b10 ? oneMapping : zeroMapping; dest[destPos++] = elem & 0b1 ? oneMapping : zeroMapping; } if (widthRemainder === 0) { continue; } const elem = srcPos < srcLength ? src[srcPos++] : 255; for (let j = 0; j < widthRemainder; j++) { dest[destPos++] = elem & 1 << 7 - j ? oneMapping : zeroMapping; } } return { srcPos, destPos }; } function convertRGBToRGBA({ src, srcPos = 0, dest, destPos = 0, width, height }) { let i = 0; const len32 = src.length >> 2; const src32 = new Uint32Array(src.buffer, srcPos, len32); if (_util.FeatureTest.isLittleEndian) { for (; i < len32 - 2; i += 3, destPos += 4) { const s1 = src32[i]; const s2 = src32[i + 1]; const s3 = src32[i + 2]; dest[destPos] = s1 | 0xff000000; dest[destPos + 1] = s1 >>> 24 | s2 << 8 | 0xff000000; dest[destPos + 2] = s2 >>> 16 | s3 << 16 | 0xff000000; dest[destPos + 3] = s3 >>> 8 | 0xff000000; } for (let j = i * 4, jj = src.length; j < jj; j += 3) { dest[destPos++] = src[j] | src[j + 1] << 8 | src[j + 2] << 16 | 0xff000000; } } else { for (; i < len32 - 2; i += 3, destPos += 4) { const s1 = src32[i]; const s2 = src32[i + 1]; const s3 = src32[i + 2]; dest[destPos] = s1 | 0xff; dest[destPos + 1] = s1 << 24 | s2 >>> 8 | 0xff; dest[destPos + 2] = s2 << 16 | s3 >>> 16 | 0xff; dest[destPos + 3] = s3 << 8 | 0xff; } for (let j = i * 4, jj = src.length; j < jj; j += 3) { dest[destPos++] = src[j] << 24 | src[j + 1] << 16 | src[j + 2] << 8 | 0xff; } } return { srcPos, destPos }; } function grayToRGBA(src, dest) { if (_util.FeatureTest.isLittleEndian) { for (let i = 0, ii = src.length; i < ii; i++) { dest[i] = src[i] * 0x10101 | 0xff000000; } } else { for (let i = 0, ii = src.length; i < ii; i++) { dest[i] = src[i] * 0x1010100 | 0x000000ff; } } } /***/ }), /* 10 */ /***/ ((__unused_webpack_module, exports, __w_pdfjs_require__) => { Object.defineProperty(exports, "__esModule", ({ value: true })); exports.JpxImage = void 0; var _util = __w_pdfjs_require__(1); var _core_utils = __w_pdfjs_require__(3); var _arithmetic_decoder = __w_pdfjs_require__(6); class JpxError extends _util.BaseException { constructor(msg) { super(`JPX error: ${msg}`, "JpxError"); } } const SubbandsGainLog2 = { LL: 0, LH: 1, HL: 1, HH: 2 }; class JpxImage { constructor() { this.failOnCorruptedImage = false; } parse(data) { const head = (0, _core_utils.readUint16)(data, 0); if (head === 0xff4f) { this.parseCodestream(data, 0, data.length); return; } const length = data.length; let position = 0; while (position < length) { let headerSize = 8; let lbox = (0, _core_utils.readUint32)(data, position); const tbox = (0, _core_utils.readUint32)(data, position + 4); position += headerSize; if (lbox === 1) { lbox = (0, _core_utils.readUint32)(data, position) * 4294967296 + (0, _core_utils.readUint32)(data, position + 4); position += 8; headerSize += 8; } if (lbox === 0) { lbox = length - position + headerSize; } if (lbox < headerSize) { throw new JpxError("Invalid box field size"); } const dataLength = lbox - headerSize; let jumpDataLength = true; switch (tbox) { case 0x6a703268: jumpDataLength = false; break; case 0x636f6c72: const method = data[position]; if (method === 1) { const colorspace = (0, _core_utils.readUint32)(data, position + 3); switch (colorspace) { case 16: case 17: case 18: break; default: (0, _util.warn)("Unknown colorspace " + colorspace); break; } } else if (method === 2) { (0, _util.info)("ICC profile not supported"); } break; case 0x6a703263: this.parseCodestream(data, position, position + dataLength); break; case 0x6a502020: if ((0, _core_utils.readUint32)(data, position) !== 0x0d0a870a) { (0, _util.warn)("Invalid JP2 signature"); } break; case 0x6a501a1a: case 0x66747970: case 0x72726571: case 0x72657320: case 0x69686472: break; default: const headerType = String.fromCharCode(tbox >> 24 & 0xff, tbox >> 16 & 0xff, tbox >> 8 & 0xff, tbox & 0xff); (0, _util.warn)(`Unsupported header type ${tbox} (${headerType}).`); break; } if (jumpDataLength) { position += dataLength; } } } parseImageProperties(stream) { let newByte = stream.getByte(); while (newByte >= 0) { const oldByte = newByte; newByte = stream.getByte(); const code = oldByte << 8 | newByte; if (code === 0xff51) { stream.skip(4); const Xsiz = stream.getInt32() >>> 0; const Ysiz = stream.getInt32() >>> 0; const XOsiz = stream.getInt32() >>> 0; const YOsiz = stream.getInt32() >>> 0; stream.skip(16); const Csiz = stream.getUint16(); this.width = Xsiz - XOsiz; this.height = Ysiz - YOsiz; this.componentsCount = Csiz; this.bitsPerComponent = 8; return; } } throw new JpxError("No size marker found in JPX stream"); } parseCodestream(data, start, end) { const context = {}; let doNotRecover = false; try { let position = start; while (position + 1 < end) { const code = (0, _core_utils.readUint16)(data, position); position += 2; let length = 0, j, sqcd, spqcds, spqcdSize, scalarExpounded, tile; switch (code) { case 0xff4f: context.mainHeader = true; break; case 0xffd9: break; case 0xff51: length = (0, _core_utils.readUint16)(data, position); const siz = {}; siz.Xsiz = (0, _core_utils.readUint32)(data, position + 4); siz.Ysiz = (0, _core_utils.readUint32)(data, position + 8); siz.XOsiz = (0, _core_utils.readUint32)(data, position + 12); siz.YOsiz = (0, _core_utils.readUint32)(data, position + 16); siz.XTsiz = (0, _core_utils.readUint32)(data, position + 20); siz.YTsiz = (0, _core_utils.readUint32)(data, position + 24); siz.XTOsiz = (0, _core_utils.readUint32)(data, position + 28); siz.YTOsiz = (0, _core_utils.readUint32)(data, position + 32); const componentsCount = (0, _core_utils.readUint16)(data, position + 36); siz.Csiz = componentsCount; const components = []; j = position + 38; for (let i = 0; i < componentsCount; i++) { const component = { precision: (data[j] & 0x7f) + 1, isSigned: !!(data[j] & 0x80), XRsiz: data[j + 1], YRsiz: data[j + 2] }; j += 3; calculateComponentDimensions(component, siz); components.push(component); } context.SIZ = siz; context.components = components; calculateTileGrids(context, components); context.QCC = []; context.COC = []; break; case 0xff5c: length = (0, _core_utils.readUint16)(data, position); const qcd = {}; j = position + 2; sqcd = data[j++]; switch (sqcd & 0x1f) { case 0: spqcdSize = 8; scalarExpounded = true; break; case 1: spqcdSize = 16; scalarExpounded = false; break; case 2: spqcdSize = 16; scalarExpounded = true; break; default: throw new Error("Invalid SQcd value " + sqcd); } qcd.noQuantization = spqcdSize === 8; qcd.scalarExpounded = scalarExpounded; qcd.guardBits = sqcd >> 5; spqcds = []; while (j < length + position) { const spqcd = {}; if (spqcdSize === 8) { spqcd.epsilon = data[j++] >> 3; spqcd.mu = 0; } else { spqcd.epsilon = data[j] >> 3; spqcd.mu = (data[j] & 0x7) << 8 | data[j + 1]; j += 2; } spqcds.push(spqcd); } qcd.SPqcds = spqcds; if (context.mainHeader) { context.QCD = qcd; } else { context.currentTile.QCD = qcd; context.currentTile.QCC = []; } break; case 0xff5d: length = (0, _core_utils.readUint16)(data, position); const qcc = {}; j = position + 2; let cqcc; if (context.SIZ.Csiz < 257) { cqcc = data[j++]; } else { cqcc = (0, _core_utils.readUint16)(data, j); j += 2; } sqcd = data[j++]; switch (sqcd & 0x1f) { case 0: spqcdSize = 8; scalarExpounded = true; break; case 1: spqcdSize = 16; scalarExpounded = false; break; case 2: spqcdSize = 16; scalarExpounded = true; break; default: throw new Error("Invalid SQcd value " + sqcd); } qcc.noQuantization = spqcdSize === 8; qcc.scalarExpounded = scalarExpounded; qcc.guardBits = sqcd >> 5; spqcds = []; while (j < length + position) { const spqcd = {}; if (spqcdSize === 8) { spqcd.epsilon = data[j++] >> 3; spqcd.mu = 0; } else { spqcd.epsilon = data[j] >> 3; spqcd.mu = (data[j] & 0x7) << 8 | data[j + 1]; j += 2; } spqcds.push(spqcd); } qcc.SPqcds = spqcds; if (context.mainHeader) { context.QCC[cqcc] = qcc; } else { context.currentTile.QCC[cqcc] = qcc; } break; case 0xff52: length = (0, _core_utils.readUint16)(data, position); const cod = {}; j = position + 2; const scod = data[j++]; cod.entropyCoderWithCustomPrecincts = !!(scod & 1); cod.sopMarkerUsed = !!(scod & 2); cod.ephMarkerUsed = !!(scod & 4); cod.progressionOrder = data[j++]; cod.layersCount = (0, _core_utils.readUint16)(data, j); j += 2; cod.multipleComponentTransform = data[j++]; cod.decompositionLevelsCount = data[j++]; cod.xcb = (data[j++] & 0xf) + 2; cod.ycb = (data[j++] & 0xf) + 2; const blockStyle = data[j++]; cod.selectiveArithmeticCodingBypass = !!(blockStyle & 1); cod.resetContextProbabilities = !!(blockStyle & 2); cod.terminationOnEachCodingPass = !!(blockStyle & 4); cod.verticallyStripe = !!(blockStyle & 8); cod.predictableTermination = !!(blockStyle & 16); cod.segmentationSymbolUsed = !!(blockStyle & 32); cod.reversibleTransformation = data[j++]; if (cod.entropyCoderWithCustomPrecincts) { const precinctsSizes = []; while (j < length + position) { const precinctsSize = data[j++]; precinctsSizes.push({ PPx: precinctsSize & 0xf, PPy: precinctsSize >> 4 }); } cod.precinctsSizes = precinctsSizes; } const unsupported = []; if (cod.selectiveArithmeticCodingBypass) { unsupported.push("selectiveArithmeticCodingBypass"); } if (cod.terminationOnEachCodingPass) { unsupported.push("terminationOnEachCodingPass"); } if (cod.verticallyStripe) { unsupported.push("verticallyStripe"); } if (cod.predictableTermination) { unsupported.push("predictableTermination"); } if (unsupported.length > 0) { doNotRecover = true; (0, _util.warn)(`JPX: Unsupported COD options (${unsupported.join(", ")}).`); } if (context.mainHeader) { context.COD = cod; } else { context.currentTile.COD = cod; context.currentTile.COC = []; } break; case 0xff90: length = (0, _core_utils.readUint16)(data, position); tile = {}; tile.index = (0, _core_utils.readUint16)(data, position + 2); tile.length = (0, _core_utils.readUint32)(data, position + 4); tile.dataEnd = tile.length + position - 2; tile.partIndex = data[position + 8]; tile.partsCount = data[position + 9]; context.mainHeader = false; if (tile.partIndex === 0) { tile.COD = context.COD; tile.COC = context.COC.slice(0); tile.QCD = context.QCD; tile.QCC = context.QCC.slice(0); } context.currentTile = tile; break; case 0xff93: tile = context.currentTile; if (tile.partIndex === 0) { initializeTile(context, tile.index); buildPackets(context); } length = tile.dataEnd - position; parseTilePackets(context, data, position, length); break; case 0xff53: (0, _util.warn)("JPX: Codestream code 0xFF53 (COC) is not implemented."); case 0xff55: case 0xff57: case 0xff58: case 0xff64: length = (0, _core_utils.readUint16)(data, position); break; default: throw new Error("Unknown codestream code: " + code.toString(16)); } position += length; } } catch (e) { if (doNotRecover || this.failOnCorruptedImage) { throw new JpxError(e.message); } else { (0, _util.warn)(`JPX: Trying to recover from: "${e.message}".`); } } this.tiles = transformComponents(context); this.width = context.SIZ.Xsiz - context.SIZ.XOsiz; this.height = context.SIZ.Ysiz - context.SIZ.YOsiz; this.componentsCount = context.SIZ.Csiz; } } exports.JpxImage = JpxImage; function calculateComponentDimensions(component, siz) { component.x0 = Math.ceil(siz.XOsiz / component.XRsiz); component.x1 = Math.ceil(siz.Xsiz / component.XRsiz); component.y0 = Math.ceil(siz.YOsiz / component.YRsiz); component.y1 = Math.ceil(siz.Ysiz / component.YRsiz); component.width = component.x1 - component.x0; component.height = component.y1 - component.y0; } function calculateTileGrids(context, components) { const siz = context.SIZ; const tiles = []; let tile; const numXtiles = Math.ceil((siz.Xsiz - siz.XTOsiz) / siz.XTsiz); const numYtiles = Math.ceil((siz.Ysiz - siz.YTOsiz) / siz.YTsiz); for (let q = 0; q < numYtiles; q++) { for (let p = 0; p < numXtiles; p++) { tile = {}; tile.tx0 = Math.max(siz.XTOsiz + p * siz.XTsiz, siz.XOsiz); tile.ty0 = Math.max(siz.YTOsiz + q * siz.YTsiz, siz.YOsiz); tile.tx1 = Math.min(siz.XTOsiz + (p + 1) * siz.XTsiz, siz.Xsiz); tile.ty1 = Math.min(siz.YTOsiz + (q + 1) * siz.YTsiz, siz.Ysiz); tile.width = tile.tx1 - tile.tx0; tile.height = tile.ty1 - tile.ty0; tile.components = []; tiles.push(tile); } } context.tiles = tiles; const componentsCount = siz.Csiz; for (let i = 0, ii = componentsCount; i < ii; i++) { const component = components[i]; for (let j = 0, jj = tiles.length; j < jj; j++) { const tileComponent = {}; tile = tiles[j]; tileComponent.tcx0 = Math.ceil(tile.tx0 / component.XRsiz); tileComponent.tcy0 = Math.ceil(tile.ty0 / component.YRsiz); tileComponent.tcx1 = Math.ceil(tile.tx1 / component.XRsiz); tileComponent.tcy1 = Math.ceil(tile.ty1 / component.YRsiz); tileComponent.width = tileComponent.tcx1 - tileComponent.tcx0; tileComponent.height = tileComponent.tcy1 - tileComponent.tcy0; tile.components[i] = tileComponent; } } } function getBlocksDimensions(context, component, r) { const codOrCoc = component.codingStyleParameters; const result = {}; if (!codOrCoc.entropyCoderWithCustomPrecincts) { result.PPx = 15; result.PPy = 15; } else { result.PPx = codOrCoc.precinctsSizes[r].PPx; result.PPy = codOrCoc.precinctsSizes[r].PPy; } result.xcb_ = r > 0 ? Math.min(codOrCoc.xcb, result.PPx - 1) : Math.min(codOrCoc.xcb, result.PPx); result.ycb_ = r > 0 ? Math.min(codOrCoc.ycb, result.PPy - 1) : Math.min(codOrCoc.ycb, result.PPy); return result; } function buildPrecincts(context, resolution, dimensions) { const precinctWidth = 1 << dimensions.PPx; const precinctHeight = 1 << dimensions.PPy; const isZeroRes = resolution.resLevel === 0; const precinctWidthInSubband = 1 << dimensions.PPx + (isZeroRes ? 0 : -1); const precinctHeightInSubband = 1 << dimensions.PPy + (isZeroRes ? 0 : -1); const numprecinctswide = resolution.trx1 > resolution.trx0 ? Math.ceil(resolution.trx1 / precinctWidth) - Math.floor(resolution.trx0 / precinctWidth) : 0; const numprecinctshigh = resolution.try1 > resolution.try0 ? Math.ceil(resolution.try1 / precinctHeight) - Math.floor(resolution.try0 / precinctHeight) : 0; const numprecincts = numprecinctswide * numprecinctshigh; resolution.precinctParameters = { precinctWidth, precinctHeight, numprecinctswide, numprecinctshigh, numprecincts, precinctWidthInSubband, precinctHeightInSubband }; } function buildCodeblocks(context, subband, dimensions) { const xcb_ = dimensions.xcb_; const ycb_ = dimensions.ycb_; const codeblockWidth = 1 << xcb_; const codeblockHeight = 1 << ycb_; const cbx0 = subband.tbx0 >> xcb_; const cby0 = subband.tby0 >> ycb_; const cbx1 = subband.tbx1 + codeblockWidth - 1 >> xcb_; const cby1 = subband.tby1 + codeblockHeight - 1 >> ycb_; const precinctParameters = subband.resolution.precinctParameters; const codeblocks = []; const precincts = []; let i, j, codeblock, precinctNumber; for (j = cby0; j < cby1; j++) { for (i = cbx0; i < cbx1; i++) { codeblock = { cbx: i, cby: j, tbx0: codeblockWidth * i, tby0: codeblockHeight * j, tbx1: codeblockWidth * (i + 1), tby1: codeblockHeight * (j + 1) }; codeblock.tbx0_ = Math.max(subband.tbx0, codeblock.tbx0); codeblock.tby0_ = Math.max(subband.tby0, codeblock.tby0); codeblock.tbx1_ = Math.min(subband.tbx1, codeblock.tbx1); codeblock.tby1_ = Math.min(subband.tby1, codeblock.tby1); const pi = Math.floor((codeblock.tbx0_ - subband.tbx0) / precinctParameters.precinctWidthInSubband); const pj = Math.floor((codeblock.tby0_ - subband.tby0) / precinctParameters.precinctHeightInSubband); precinctNumber = pi + pj * precinctParameters.numprecinctswide; codeblock.precinctNumber = precinctNumber; codeblock.subbandType = subband.type; codeblock.Lblock = 3; if (codeblock.tbx1_ <= codeblock.tbx0_ || codeblock.tby1_ <= codeblock.tby0_) { continue; } codeblocks.push(codeblock); let precinct = precincts[precinctNumber]; if (precinct !== undefined) { if (i < precinct.cbxMin) { precinct.cbxMin = i; } else if (i > precinct.cbxMax) { precinct.cbxMax = i; } if (j < precinct.cbyMin) { precinct.cbxMin = j; } else if (j > precinct.cbyMax) { precinct.cbyMax = j; } } else { precincts[precinctNumber] = precinct = { cbxMin: i, cbyMin: j, cbxMax: i, cbyMax: j }; } codeblock.precinct = precinct; } } subband.codeblockParameters = { codeblockWidth: xcb_, codeblockHeight: ycb_, numcodeblockwide: cbx1 - cbx0 + 1, numcodeblockhigh: cby1 - cby0 + 1 }; subband.codeblocks = codeblocks; subband.precincts = precincts; } function createPacket(resolution, precinctNumber, layerNumber) { const precinctCodeblocks = []; const subbands = resolution.subbands; for (let i = 0, ii = subbands.length; i < ii; i++) { const subband = subbands[i]; const codeblocks = subband.codeblocks; for (let j = 0, jj = codeblocks.length; j < jj; j++) { const codeblock = codeblocks[j]; if (codeblock.precinctNumber !== precinctNumber) { continue; } precinctCodeblocks.push(codeblock); } } return { layerNumber, codeblocks: precinctCodeblocks }; } function LayerResolutionComponentPositionIterator(context) { const siz = context.SIZ; const tileIndex = context.currentTile.index; const tile = context.tiles[tileIndex]; const layersCount = tile.codingStyleDefaultParameters.layersCount; const componentsCount = siz.Csiz; let maxDecompositionLevelsCount = 0; for (let q = 0; q < componentsCount; q++) { maxDecompositionLevelsCount = Math.max(maxDecompositionLevelsCount, tile.components[q].codingStyleParameters.decompositionLevelsCount); } let l = 0, r = 0, i = 0, k = 0; this.nextPacket = function JpxImage_nextPacket() { for (; l < layersCount; l++) { for (; r <= maxDecompositionLevelsCount; r++) { for (; i < componentsCount; i++) { const component = tile.components[i]; if (r > component.codingStyleParameters.decompositionLevelsCount) { continue; } const resolution = component.resolutions[r]; const numprecincts = resolution.precinctParameters.numprecincts; for (; k < numprecincts;) { const packet = createPacket(resolution, k, l); k++; return packet; } k = 0; } i = 0; } r = 0; } throw new JpxError("Out of packets"); }; } function ResolutionLayerComponentPositionIterator(context) { const siz = context.SIZ; const tileIndex = context.currentTile.index; const tile = context.tiles[tileIndex]; const layersCount = tile.codingStyleDefaultParameters.layersCount; const componentsCount = siz.Csiz; let maxDecompositionLevelsCount = 0; for (let q = 0; q < componentsCount; q++) { maxDecompositionLevelsCount = Math.max(maxDecompositionLevelsCount, tile.components[q].codingStyleParameters.decompositionLevelsCount); } let r = 0, l = 0, i = 0, k = 0; this.nextPacket = function JpxImage_nextPacket() { for (; r <= maxDecompositionLevelsCount; r++) { for (; l < layersCount; l++) { for (; i < componentsCount; i++) { const component = tile.components[i]; if (r > component.codingStyleParameters.decompositionLevelsCount) { continue; } const resolution = component.resolutions[r]; const numprecincts = resolution.precinctParameters.numprecincts; for (; k < numprecincts;) { const packet = createPacket(resolution, k, l); k++; return packet; } k = 0; } i = 0; } l = 0; } throw new JpxError("Out of packets"); }; } function ResolutionPositionComponentLayerIterator(context) { const siz = context.SIZ; const tileIndex = context.currentTile.index; const tile = context.tiles[tileIndex]; const layersCount = tile.codingStyleDefaultParameters.layersCount; const componentsCount = siz.Csiz; let l, r, c, p; let maxDecompositionLevelsCount = 0; for (c = 0; c < componentsCount; c++) { const component = tile.components[c]; maxDecompositionLevelsCount = Math.max(maxDecompositionLevelsCount, component.codingStyleParameters.decompositionLevelsCount); } const maxNumPrecinctsInLevel = new Int32Array(maxDecompositionLevelsCount + 1); for (r = 0; r <= maxDecompositionLevelsCount; ++r) { let maxNumPrecincts = 0; for (c = 0; c < componentsCount; ++c) { const resolutions = tile.components[c].resolutions; if (r < resolutions.length) { maxNumPrecincts = Math.max(maxNumPrecincts, resolutions[r].precinctParameters.numprecincts); } } maxNumPrecinctsInLevel[r] = maxNumPrecincts; } l = 0; r = 0; c = 0; p = 0; this.nextPacket = function JpxImage_nextPacket() { for (; r <= maxDecompositionLevelsCount; r++) { for (; p < maxNumPrecinctsInLevel[r]; p++) { for (; c < componentsCount; c++) { const component = tile.components[c]; if (r > component.codingStyleParameters.decompositionLevelsCount) { continue; } const resolution = component.resolutions[r]; const numprecincts = resolution.precinctParameters.numprecincts; if (p >= numprecincts) { continue; } for (; l < layersCount;) { const packet = createPacket(resolution, p, l); l++; return packet; } l = 0; } c = 0; } p = 0; } throw new JpxError("Out of packets"); }; } function PositionComponentResolutionLayerIterator(context) { const siz = context.SIZ; const tileIndex = context.currentTile.index; const tile = context.tiles[tileIndex]; const layersCount = tile.codingStyleDefaultParameters.layersCount; const componentsCount = siz.Csiz; const precinctsSizes = getPrecinctSizesInImageScale(tile); const precinctsIterationSizes = precinctsSizes; let l = 0, r = 0, c = 0, px = 0, py = 0; this.nextPacket = function JpxImage_nextPacket() { for (; py < precinctsIterationSizes.maxNumHigh; py++) { for (; px < precinctsIterationSizes.maxNumWide; px++) { for (; c < componentsCount; c++) { const component = tile.components[c]; const decompositionLevelsCount = component.codingStyleParameters.decompositionLevelsCount; for (; r <= decompositionLevelsCount; r++) { const resolution = component.resolutions[r]; const sizeInImageScale = precinctsSizes.components[c].resolutions[r]; const k = getPrecinctIndexIfExist(px, py, sizeInImageScale, precinctsIterationSizes, resolution); if (k === null) { continue; } for (; l < layersCount;) { const packet = createPacket(resolution, k, l); l++; return packet; } l = 0; } r = 0; } c = 0; } px = 0; } throw new JpxError("Out of packets"); }; } function ComponentPositionResolutionLayerIterator(context) { const siz = context.SIZ; const tileIndex = context.currentTile.index; const tile = context.tiles[tileIndex]; const layersCount = tile.codingStyleDefaultParameters.layersCount; const componentsCount = siz.Csiz; const precinctsSizes = getPrecinctSizesInImageScale(tile); let l = 0, r = 0, c = 0, px = 0, py = 0; this.nextPacket = function JpxImage_nextPacket() { for (; c < componentsCount; ++c) { const component = tile.components[c]; const precinctsIterationSizes = precinctsSizes.components[c]; const decompositionLevelsCount = component.codingStyleParameters.decompositionLevelsCount; for (; py < precinctsIterationSizes.maxNumHigh; py++) { for (; px < precinctsIterationSizes.maxNumWide; px++) { for (; r <= decompositionLevelsCount; r++) { const resolution = component.resolutions[r]; const sizeInImageScale = precinctsIterationSizes.resolutions[r]; const k = getPrecinctIndexIfExist(px, py, sizeInImageScale, precinctsIterationSizes, resolution); if (k === null) { continue; } for (; l < layersCount;) { const packet = createPacket(resolution, k, l); l++; return packet; } l = 0; } r = 0; } px = 0; } py = 0; } throw new JpxError("Out of packets"); }; } function getPrecinctIndexIfExist(pxIndex, pyIndex, sizeInImageScale, precinctIterationSizes, resolution) { const posX = pxIndex * precinctIterationSizes.minWidth; const posY = pyIndex * precinctIterationSizes.minHeight; if (posX % sizeInImageScale.width !== 0 || posY % sizeInImageScale.height !== 0) { return null; } const startPrecinctRowIndex = posY / sizeInImageScale.width * resolution.precinctParameters.numprecinctswide; return posX / sizeInImageScale.height + startPrecinctRowIndex; } function getPrecinctSizesInImageScale(tile) { const componentsCount = tile.components.length; let minWidth = Number.MAX_VALUE; let minHeight = Number.MAX_VALUE; let maxNumWide = 0; let maxNumHigh = 0; const sizePerComponent = new Array(componentsCount); for (let c = 0; c < componentsCount; c++) { const component = tile.components[c]; const decompositionLevelsCount = component.codingStyleParameters.decompositionLevelsCount; const sizePerResolution = new Array(decompositionLevelsCount + 1); let minWidthCurrentComponent = Number.MAX_VALUE; let minHeightCurrentComponent = Number.MAX_VALUE; let maxNumWideCurrentComponent = 0; let maxNumHighCurrentComponent = 0; let scale = 1; for (let r = decompositionLevelsCount; r >= 0; --r) { const resolution = component.resolutions[r]; const widthCurrentResolution = scale * resolution.precinctParameters.precinctWidth; const heightCurrentResolution = scale * resolution.precinctParameters.precinctHeight; minWidthCurrentComponent = Math.min(minWidthCurrentComponent, widthCurrentResolution); minHeightCurrentComponent = Math.min(minHeightCurrentComponent, heightCurrentResolution); maxNumWideCurrentComponent = Math.max(maxNumWideCurrentComponent, resolution.precinctParameters.numprecinctswide); maxNumHighCurrentComponent = Math.max(maxNumHighCurrentComponent, resolution.precinctParameters.numprecinctshigh); sizePerResolution[r] = { width: widthCurrentResolution, height: heightCurrentResolution }; scale <<= 1; } minWidth = Math.min(minWidth, minWidthCurrentComponent); minHeight = Math.min(minHeight, minHeightCurrentComponent); maxNumWide = Math.max(maxNumWide, maxNumWideCurrentComponent); maxNumHigh = Math.max(maxNumHigh, maxNumHighCurrentComponent); sizePerComponent[c] = { resolutions: sizePerResolution, minWidth: minWidthCurrentComponent, minHeight: minHeightCurrentComponent, maxNumWide: maxNumWideCurrentComponent, maxNumHigh: maxNumHighCurrentComponent }; } return { components: sizePerComponent, minWidth, minHeight, maxNumWide, maxNumHigh }; } function buildPackets(context) { const siz = context.SIZ; const tileIndex = context.currentTile.index; const tile = context.tiles[tileIndex]; const componentsCount = siz.Csiz; for (let c = 0; c < componentsCount; c++) { const component = tile.components[c]; const decompositionLevelsCount = component.codingStyleParameters.decompositionLevelsCount; const resolutions = []; const subbands = []; for (let r = 0; r <= decompositionLevelsCount; r++) { const blocksDimensions = getBlocksDimensions(context, component, r); const resolution = {}; const scale = 1 << decompositionLevelsCount - r; resolution.trx0 = Math.ceil(component.tcx0 / scale); resolution.try0 = Math.ceil(component.tcy0 / scale); resolution.trx1 = Math.ceil(component.tcx1 / scale); resolution.try1 = Math.ceil(component.tcy1 / scale); resolution.resLevel = r; buildPrecincts(context, resolution, blocksDimensions); resolutions.push(resolution); let subband; if (r === 0) { subband = {}; subband.type = "LL"; subband.tbx0 = Math.ceil(component.tcx0 / scale); subband.tby0 = Math.ceil(component.tcy0 / scale); subband.tbx1 = Math.ceil(component.tcx1 / scale); subband.tby1 = Math.ceil(component.tcy1 / scale); subband.resolution = resolution; buildCodeblocks(context, subband, blocksDimensions); subbands.push(subband); resolution.subbands = [subband]; } else { const bscale = 1 << decompositionLevelsCount - r + 1; const resolutionSubbands = []; subband = {}; subband.type = "HL"; subband.tbx0 = Math.ceil(component.tcx0 / bscale - 0.5); subband.tby0 = Math.ceil(component.tcy0 / bscale); subband.tbx1 = Math.ceil(component.tcx1 / bscale - 0.5); subband.tby1 = Math.ceil(component.tcy1 / bscale); subband.resolution = resolution; buildCodeblocks(context, subband, blocksDimensions); subbands.push(subband); resolutionSubbands.push(subband); subband = {}; subband.type = "LH"; subband.tbx0 = Math.ceil(component.tcx0 / bscale); subband.tby0 = Math.ceil(component.tcy0 / bscale - 0.5); subband.tbx1 = Math.ceil(component.tcx1 / bscale); subband.tby1 = Math.ceil(component.tcy1 / bscale - 0.5); subband.resolution = resolution; buildCodeblocks(context, subband, blocksDimensions); subbands.push(subband); resolutionSubbands.push(subband); subband = {}; subband.type = "HH"; subband.tbx0 = Math.ceil(component.tcx0 / bscale - 0.5); subband.tby0 = Math.ceil(component.tcy0 / bscale - 0.5); subband.tbx1 = Math.ceil(component.tcx1 / bscale - 0.5); subband.tby1 = Math.ceil(component.tcy1 / bscale - 0.5); subband.resolution = resolution; buildCodeblocks(context, subband, blocksDimensions); subbands.push(subband); resolutionSubbands.push(subband); resolution.subbands = resolutionSubbands; } } component.resolutions = resolutions; component.subbands = subbands; } const progressionOrder = tile.codingStyleDefaultParameters.progressionOrder; switch (progressionOrder) { case 0: tile.packetsIterator = new LayerResolutionComponentPositionIterator(context); break; case 1: tile.packetsIterator = new ResolutionLayerComponentPositionIterator(context); break; case 2: tile.packetsIterator = new ResolutionPositionComponentLayerIterator(context); break; case 3: tile.packetsIterator = new PositionComponentResolutionLayerIterator(context); break; case 4: tile.packetsIterator = new ComponentPositionResolutionLayerIterator(context); break; default: throw new JpxError(`Unsupported progression order ${progressionOrder}`); } } function parseTilePackets(context, data, offset, dataLength) { let position = 0; let buffer, bufferSize = 0, skipNextBit = false; function readBits(count) { while (bufferSize < count) { const b = data[offset + position]; position++; if (skipNextBit) { buffer = buffer << 7 | b; bufferSize += 7; skipNextBit = false; } else { buffer = buffer << 8 | b; bufferSize += 8; } if (b === 0xff) { skipNextBit = true; } } bufferSize -= count; return buffer >>> bufferSize & (1 << count) - 1; } function skipMarkerIfEqual(value) { if (data[offset + position - 1] === 0xff && data[offset + position] === value) { skipBytes(1); return true; } else if (data[offset + position] === 0xff && data[offset + position + 1] === value) { skipBytes(2); return true; } return false; } function skipBytes(count) { position += count; } function alignToByte() { bufferSize = 0; if (skipNextBit) { position++; skipNextBit = false; } } function readCodingpasses() { if (readBits(1) === 0) { return 1; } if (readBits(1) === 0) { return 2; } let value = readBits(2); if (value < 3) { return value + 3; } value = readBits(5); if (value < 31) { return value + 6; } value = readBits(7); return value + 37; } const tileIndex = context.currentTile.index; const tile = context.tiles[tileIndex]; const sopMarkerUsed = context.COD.sopMarkerUsed; const ephMarkerUsed = context.COD.ephMarkerUsed; const packetsIterator = tile.packetsIterator; while (position < dataLength) { alignToByte(); if (sopMarkerUsed && skipMarkerIfEqual(0x91)) { skipBytes(4); } const packet = packetsIterator.nextPacket(); if (!readBits(1)) { continue; } const layerNumber = packet.layerNumber, queue = []; let codeblock; for (let i = 0, ii = packet.codeblocks.length; i < ii; i++) { codeblock = packet.codeblocks[i]; let precinct = codeblock.precinct; const codeblockColumn = codeblock.cbx - precinct.cbxMin; const codeblockRow = codeblock.cby - precinct.cbyMin; let codeblockIncluded = false; let firstTimeInclusion = false; let valueReady, zeroBitPlanesTree; if (codeblock.included !== undefined) { codeblockIncluded = !!readBits(1); } else { precinct = codeblock.precinct; let inclusionTree; if (precinct.inclusionTree !== undefined) { inclusionTree = precinct.inclusionTree; } else { const width = precinct.cbxMax - precinct.cbxMin + 1; const height = precinct.cbyMax - precinct.cbyMin + 1; inclusionTree = new InclusionTree(width, height, layerNumber); zeroBitPlanesTree = new TagTree(width, height); precinct.inclusionTree = inclusionTree; precinct.zeroBitPlanesTree = zeroBitPlanesTree; for (let l = 0; l < layerNumber; l++) { if (readBits(1) !== 0) { throw new JpxError("Invalid tag tree"); } } } if (inclusionTree.reset(codeblockColumn, codeblockRow, layerNumber)) { while (true) { if (readBits(1)) { valueReady = !inclusionTree.nextLevel(); if (valueReady) { codeblock.included = true; codeblockIncluded = firstTimeInclusion = true; break; } } else { inclusionTree.incrementValue(layerNumber); break; } } } } if (!codeblockIncluded) { continue; } if (firstTimeInclusion) { zeroBitPlanesTree = precinct.zeroBitPlanesTree; zeroBitPlanesTree.reset(codeblockColumn, codeblockRow); while (true) { if (readBits(1)) { valueReady = !zeroBitPlanesTree.nextLevel(); if (valueReady) { break; } } else { zeroBitPlanesTree.incrementValue(); } } codeblock.zeroBitPlanes = zeroBitPlanesTree.value; } const codingpasses = readCodingpasses(); while (readBits(1)) { codeblock.Lblock++; } const codingpassesLog2 = (0, _core_utils.log2)(codingpasses); const bits = (codingpasses < 1 << codingpassesLog2 ? codingpassesLog2 - 1 : codingpassesLog2) + codeblock.Lblock; const codedDataLength = readBits(bits); queue.push({ codeblock, codingpasses, dataLength: codedDataLength }); } alignToByte(); if (ephMarkerUsed) { skipMarkerIfEqual(0x92); } while (queue.length > 0) { const packetItem = queue.shift(); codeblock = packetItem.codeblock; if (codeblock.data === undefined) { codeblock.data = []; } codeblock.data.push({ data, start: offset + position, end: offset + position + packetItem.dataLength, codingpasses: packetItem.codingpasses }); position += packetItem.dataLength; } } return position; } function copyCoefficients(coefficients, levelWidth, levelHeight, subband, delta, mb, reversible, segmentationSymbolUsed, resetContextProbabilities) { const x0 = subband.tbx0; const y0 = subband.tby0; const width = subband.tbx1 - subband.tbx0; const codeblocks = subband.codeblocks; const right = subband.type.charAt(0) === "H" ? 1 : 0; const bottom = subband.type.charAt(1) === "H" ? levelWidth : 0; for (let i = 0, ii = codeblocks.length; i < ii; ++i) { const codeblock = codeblocks[i]; const blockWidth = codeblock.tbx1_ - codeblock.tbx0_; const blockHeight = codeblock.tby1_ - codeblock.tby0_; if (blockWidth === 0 || blockHeight === 0) { continue; } if (codeblock.data === undefined) { continue; } const bitModel = new BitModel(blockWidth, blockHeight, codeblock.subbandType, codeblock.zeroBitPlanes, mb); let currentCodingpassType = 2; const data = codeblock.data; let totalLength = 0, codingpasses = 0; let j, jj, dataItem; for (j = 0, jj = data.length; j < jj; j++) { dataItem = data[j]; totalLength += dataItem.end - dataItem.start; codingpasses += dataItem.codingpasses; } const encodedData = new Uint8Array(totalLength); let position = 0; for (j = 0, jj = data.length; j < jj; j++) { dataItem = data[j]; const chunk = dataItem.data.subarray(dataItem.start, dataItem.end); encodedData.set(chunk, position); position += chunk.length; } const decoder = new _arithmetic_decoder.ArithmeticDecoder(encodedData, 0, totalLength); bitModel.setDecoder(decoder); for (j = 0; j < codingpasses; j++) { switch (currentCodingpassType) { case 0: bitModel.runSignificancePropagationPass(); break; case 1: bitModel.runMagnitudeRefinementPass(); break; case 2: bitModel.runCleanupPass(); if (segmentationSymbolUsed) { bitModel.checkSegmentationSymbol(); } break; } if (resetContextProbabilities) { bitModel.reset(); } currentCodingpassType = (currentCodingpassType + 1) % 3; } let offset = codeblock.tbx0_ - x0 + (codeblock.tby0_ - y0) * width; const sign = bitModel.coefficentsSign; const magnitude = bitModel.coefficentsMagnitude; const bitsDecoded = bitModel.bitsDecoded; const magnitudeCorrection = reversible ? 0 : 0.5; let k, n, nb; position = 0; const interleave = subband.type !== "LL"; for (j = 0; j < blockHeight; j++) { const row = offset / width | 0; const levelOffset = 2 * row * (levelWidth - width) + right + bottom; for (k = 0; k < blockWidth; k++) { n = magnitude[position]; if (n !== 0) { n = (n + magnitudeCorrection) * delta; if (sign[position] !== 0) { n = -n; } nb = bitsDecoded[position]; const pos = interleave ? levelOffset + (offset << 1) : offset; coefficients[pos] = reversible && nb >= mb ? n : n * (1 << mb - nb); } offset++; position++; } offset += width - blockWidth; } } } function transformTile(context, tile, c) { const component = tile.components[c]; const codingStyleParameters = component.codingStyleParameters; const quantizationParameters = component.quantizationParameters; const decompositionLevelsCount = codingStyleParameters.decompositionLevelsCount; const spqcds = quantizationParameters.SPqcds; const scalarExpounded = quantizationParameters.scalarExpounded; const guardBits = quantizationParameters.guardBits; const segmentationSymbolUsed = codingStyleParameters.segmentationSymbolUsed; const resetContextProbabilities = codingStyleParameters.resetContextProbabilities; const precision = context.components[c].precision; const reversible = codingStyleParameters.reversibleTransformation; const transform = reversible ? new ReversibleTransform() : new IrreversibleTransform(); const subbandCoefficients = []; let b = 0; for (let i = 0; i <= decompositionLevelsCount; i++) { const resolution = component.resolutions[i]; const width = resolution.trx1 - resolution.trx0; const height = resolution.try1 - resolution.try0; const coefficients = new Float32Array(width * height); for (let j = 0, jj = resolution.subbands.length; j < jj; j++) { let mu, epsilon; if (!scalarExpounded) { mu = spqcds[0].mu; epsilon = spqcds[0].epsilon + (i > 0 ? 1 - i : 0); } else { mu = spqcds[b].mu; epsilon = spqcds[b].epsilon; b++; } const subband = resolution.subbands[j]; const gainLog2 = SubbandsGainLog2[subband.type]; const delta = reversible ? 1 : 2 ** (precision + gainLog2 - epsilon) * (1 + mu / 2048); const mb = guardBits + epsilon - 1; copyCoefficients(coefficients, width, height, subband, delta, mb, reversible, segmentationSymbolUsed, resetContextProbabilities); } subbandCoefficients.push({ width, height, items: coefficients }); } const result = transform.calculate(subbandCoefficients, component.tcx0, component.tcy0); return { left: component.tcx0, top: component.tcy0, width: result.width, height: result.height, items: result.items }; } function transformComponents(context) { const siz = context.SIZ; const components = context.components; const componentsCount = siz.Csiz; const resultImages = []; for (let i = 0, ii = context.tiles.length; i < ii; i++) { const tile = context.tiles[i]; const transformedTiles = []; for (let c = 0; c < componentsCount; c++) { transformedTiles[c] = transformTile(context, tile, c); } const tile0 = transformedTiles[0]; const out = new Uint8ClampedArray(tile0.items.length * componentsCount); const result = { left: tile0.left, top: tile0.top, width: tile0.width, height: tile0.height, items: out }; let shift, offset; let pos = 0, j, jj, y0, y1, y2; if (tile.codingStyleDefaultParameters.multipleComponentTransform) { const fourComponents = componentsCount === 4; const y0items = transformedTiles[0].items; const y1items = transformedTiles[1].items; const y2items = transformedTiles[2].items; const y3items = fourComponents ? transformedTiles[3].items : null; shift = components[0].precision - 8; offset = (128 << shift) + 0.5; const component0 = tile.components[0]; const alpha01 = componentsCount - 3; jj = y0items.length; if (!component0.codingStyleParameters.reversibleTransformation) { for (j = 0; j < jj; j++, pos += alpha01) { y0 = y0items[j] + offset; y1 = y1items[j]; y2 = y2items[j]; out[pos++] = y0 + 1.402 * y2 >> shift; out[pos++] = y0 - 0.34413 * y1 - 0.71414 * y2 >> shift; out[pos++] = y0 + 1.772 * y1 >> shift; } } else { for (j = 0; j < jj; j++, pos += alpha01) { y0 = y0items[j] + offset; y1 = y1items[j]; y2 = y2items[j]; const g = y0 - (y2 + y1 >> 2); out[pos++] = g + y2 >> shift; out[pos++] = g >> shift; out[pos++] = g + y1 >> shift; } } if (fourComponents) { for (j = 0, pos = 3; j < jj; j++, pos += 4) { out[pos] = y3items[j] + offset >> shift; } } } else { for (let c = 0; c < componentsCount; c++) { const items = transformedTiles[c].items; shift = components[c].precision - 8; offset = (128 << shift) + 0.5; for (pos = c, j = 0, jj = items.length; j < jj; j++) { out[pos] = items[j] + offset >> shift; pos += componentsCount; } } } resultImages.push(result); } return resultImages; } function initializeTile(context, tileIndex) { const siz = context.SIZ; const componentsCount = siz.Csiz; const tile = context.tiles[tileIndex]; for (let c = 0; c < componentsCount; c++) { const component = tile.components[c]; const qcdOrQcc = context.currentTile.QCC[c] !== undefined ? context.currentTile.QCC[c] : context.currentTile.QCD; component.quantizationParameters = qcdOrQcc; const codOrCoc = context.currentTile.COC[c] !== undefined ? context.currentTile.COC[c] : context.currentTile.COD; component.codingStyleParameters = codOrCoc; } tile.codingStyleDefaultParameters = context.currentTile.COD; } class TagTree { constructor(width, height) { const levelsLength = (0, _core_utils.log2)(Math.max(width, height)) + 1; this.levels = []; for (let i = 0; i < levelsLength; i++) { const level = { width, height, items: [] }; this.levels.push(level); width = Math.ceil(width / 2); height = Math.ceil(height / 2); } } reset(i, j) { let currentLevel = 0, value = 0, level; while (currentLevel < this.levels.length) { level = this.levels[currentLevel]; const index = i + j * level.width; if (level.items[index] !== undefined) { value = level.items[index]; break; } level.index = index; i >>= 1; j >>= 1; currentLevel++; } currentLevel--; level = this.levels[currentLevel]; level.items[level.index] = value; this.currentLevel = currentLevel; delete this.value; } incrementValue() { const level = this.levels[this.currentLevel]; level.items[level.index]++; } nextLevel() { let currentLevel = this.currentLevel; let level = this.levels[currentLevel]; const value = level.items[level.index]; currentLevel--; if (currentLevel < 0) { this.value = value; return false; } this.currentLevel = currentLevel; level = this.levels[currentLevel]; level.items[level.index] = value; return true; } } class InclusionTree { constructor(width, height, defaultValue) { const levelsLength = (0, _core_utils.log2)(Math.max(width, height)) + 1; this.levels = []; for (let i = 0; i < levelsLength; i++) { const items = new Uint8Array(width * height); for (let j = 0, jj = items.length; j < jj; j++) { items[j] = defaultValue; } const level = { width, height, items }; this.levels.push(level); width = Math.ceil(width / 2); height = Math.ceil(height / 2); } } reset(i, j, stopValue) { let currentLevel = 0; while (currentLevel < this.levels.length) { const level = this.levels[currentLevel]; const index = i + j * level.width; level.index = index; const value = level.items[index]; if (value === 0xff) { break; } if (value > stopValue) { this.currentLevel = currentLevel; this.propagateValues(); return false; } i >>= 1; j >>= 1; currentLevel++; } this.currentLevel = currentLevel - 1; return true; } incrementValue(stopValue) { const level = this.levels[this.currentLevel]; level.items[level.index] = stopValue + 1; this.propagateValues(); } propagateValues() { let levelIndex = this.currentLevel; let level = this.levels[levelIndex]; const currentValue = level.items[level.index]; while (--levelIndex >= 0) { level = this.levels[levelIndex]; level.items[level.index] = currentValue; } } nextLevel() { let currentLevel = this.currentLevel; let level = this.levels[currentLevel]; const value = level.items[level.index]; level.items[level.index] = 0xff; currentLevel--; if (currentLevel < 0) { return false; } this.currentLevel = currentLevel; level = this.levels[currentLevel]; level.items[level.index] = value; return true; } } class BitModel { static UNIFORM_CONTEXT = 17; static RUNLENGTH_CONTEXT = 18; static LLAndLHContextsLabel = new Uint8Array([0, 5, 8, 0, 3, 7, 8, 0, 4, 7, 8, 0, 0, 0, 0, 0, 1, 6, 8, 0, 3, 7, 8, 0, 4, 7, 8, 0, 0, 0, 0, 0, 2, 6, 8, 0, 3, 7, 8, 0, 4, 7, 8, 0, 0, 0, 0, 0, 2, 6, 8, 0, 3, 7, 8, 0, 4, 7, 8, 0, 0, 0, 0, 0, 2, 6, 8, 0, 3, 7, 8, 0, 4, 7, 8]); static HLContextLabel = new Uint8Array([0, 3, 4, 0, 5, 7, 7, 0, 8, 8, 8, 0, 0, 0, 0, 0, 1, 3, 4, 0, 6, 7, 7, 0, 8, 8, 8, 0, 0, 0, 0, 0, 2, 3, 4, 0, 6, 7, 7, 0, 8, 8, 8, 0, 0, 0, 0, 0, 2, 3, 4, 0, 6, 7, 7, 0, 8, 8, 8, 0, 0, 0, 0, 0, 2, 3, 4, 0, 6, 7, 7, 0, 8, 8, 8]); static HHContextLabel = new Uint8Array([0, 1, 2, 0, 1, 2, 2, 0, 2, 2, 2, 0, 0, 0, 0, 0, 3, 4, 5, 0, 4, 5, 5, 0, 5, 5, 5, 0, 0, 0, 0, 0, 6, 7, 7, 0, 7, 7, 7, 0, 7, 7, 7, 0, 0, 0, 0, 0, 8, 8, 8, 0, 8, 8, 8, 0, 8, 8, 8, 0, 0, 0, 0, 0, 8, 8, 8, 0, 8, 8, 8, 0, 8, 8, 8]); constructor(width, height, subband, zeroBitPlanes, mb) { this.width = width; this.height = height; let contextLabelTable; if (subband === "HH") { contextLabelTable = BitModel.HHContextLabel; } else if (subband === "HL") { contextLabelTable = BitModel.HLContextLabel; } else { contextLabelTable = BitModel.LLAndLHContextsLabel; } this.contextLabelTable = contextLabelTable; const coefficientCount = width * height; this.neighborsSignificance = new Uint8Array(coefficientCount); this.coefficentsSign = new Uint8Array(coefficientCount); let coefficentsMagnitude; if (mb > 14) { coefficentsMagnitude = new Uint32Array(coefficientCount); } else if (mb > 6) { coefficentsMagnitude = new Uint16Array(coefficientCount); } else { coefficentsMagnitude = new Uint8Array(coefficientCount); } this.coefficentsMagnitude = coefficentsMagnitude; this.processingFlags = new Uint8Array(coefficientCount); const bitsDecoded = new Uint8Array(coefficientCount); if (zeroBitPlanes !== 0) { for (let i = 0; i < coefficientCount; i++) { bitsDecoded[i] = zeroBitPlanes; } } this.bitsDecoded = bitsDecoded; this.reset(); } setDecoder(decoder) { this.decoder = decoder; } reset() { this.contexts = new Int8Array(19); this.contexts[0] = 4 << 1 | 0; this.contexts[BitModel.UNIFORM_CONTEXT] = 46 << 1 | 0; this.contexts[BitModel.RUNLENGTH_CONTEXT] = 3 << 1 | 0; } setNeighborsSignificance(row, column, index) { const neighborsSignificance = this.neighborsSignificance; const width = this.width, height = this.height; const left = column > 0; const right = column + 1 < width; let i; if (row > 0) { i = index - width; if (left) { neighborsSignificance[i - 1] += 0x10; } if (right) { neighborsSignificance[i + 1] += 0x10; } neighborsSignificance[i] += 0x04; } if (row + 1 < height) { i = index + width; if (left) { neighborsSignificance[i - 1] += 0x10; } if (right) { neighborsSignificance[i + 1] += 0x10; } neighborsSignificance[i] += 0x04; } if (left) { neighborsSignificance[index - 1] += 0x01; } if (right) { neighborsSignificance[index + 1] += 0x01; } neighborsSignificance[index] |= 0x80; } runSignificancePropagationPass() { const decoder = this.decoder; const width = this.width, height = this.height; const coefficentsMagnitude = this.coefficentsMagnitude; const coefficentsSign = this.coefficentsSign; const neighborsSignificance = this.neighborsSignificance; const processingFlags = this.processingFlags; const contexts = this.contexts; const labels = this.contextLabelTable; const bitsDecoded = this.bitsDecoded; const processedInverseMask = ~1; const processedMask = 1; const firstMagnitudeBitMask = 2; for (let i0 = 0; i0 < height; i0 += 4) { for (let j = 0; j < width; j++) { let index = i0 * width + j; for (let i1 = 0; i1 < 4; i1++, index += width) { const i = i0 + i1; if (i >= height) { break; } processingFlags[index] &= processedInverseMask; if (coefficentsMagnitude[index] || !neighborsSignificance[index]) { continue; } const contextLabel = labels[neighborsSignificance[index]]; const decision = decoder.readBit(contexts, contextLabel); if (decision) { const sign = this.decodeSignBit(i, j, index); coefficentsSign[index] = sign; coefficentsMagnitude[index] = 1; this.setNeighborsSignificance(i, j, index); processingFlags[index] |= firstMagnitudeBitMask; } bitsDecoded[index]++; processingFlags[index] |= processedMask; } } } } decodeSignBit(row, column, index) { const width = this.width, height = this.height; const coefficentsMagnitude = this.coefficentsMagnitude; const coefficentsSign = this.coefficentsSign; let contribution, sign0, sign1, significance1; let contextLabel, decoded; significance1 = column > 0 && coefficentsMagnitude[index - 1] !== 0; if (column + 1 < width && coefficentsMagnitude[index + 1] !== 0) { sign1 = coefficentsSign[index + 1]; if (significance1) { sign0 = coefficentsSign[index - 1]; contribution = 1 - sign1 - sign0; } else { contribution = 1 - sign1 - sign1; } } else if (significance1) { sign0 = coefficentsSign[index - 1]; contribution = 1 - sign0 - sign0; } else { contribution = 0; } const horizontalContribution = 3 * contribution; significance1 = row > 0 && coefficentsMagnitude[index - width] !== 0; if (row + 1 < height && coefficentsMagnitude[index + width] !== 0) { sign1 = coefficentsSign[index + width]; if (significance1) { sign0 = coefficentsSign[index - width]; contribution = 1 - sign1 - sign0 + horizontalContribution; } else { contribution = 1 - sign1 - sign1 + horizontalContribution; } } else if (significance1) { sign0 = coefficentsSign[index - width]; contribution = 1 - sign0 - sign0 + horizontalContribution; } else { contribution = horizontalContribution; } if (contribution >= 0) { contextLabel = 9 + contribution; decoded = this.decoder.readBit(this.contexts, contextLabel); } else { contextLabel = 9 - contribution; decoded = this.decoder.readBit(this.contexts, contextLabel) ^ 1; } return decoded; } runMagnitudeRefinementPass() { const decoder = this.decoder; const width = this.width, height = this.height; const coefficentsMagnitude = this.coefficentsMagnitude; const neighborsSignificance = this.neighborsSignificance; const contexts = this.contexts; const bitsDecoded = this.bitsDecoded; const processingFlags = this.processingFlags; const processedMask = 1; const firstMagnitudeBitMask = 2; const length = width * height; const width4 = width * 4; for (let index0 = 0, indexNext; index0 < length; index0 = indexNext) { indexNext = Math.min(length, index0 + width4); for (let j = 0; j < width; j++) { for (let index = index0 + j; index < indexNext; index += width) { if (!coefficentsMagnitude[index] || (processingFlags[index] & processedMask) !== 0) { continue; } let contextLabel = 16; if ((processingFlags[index] & firstMagnitudeBitMask) !== 0) { processingFlags[index] ^= firstMagnitudeBitMask; const significance = neighborsSignificance[index] & 127; contextLabel = significance === 0 ? 15 : 14; } const bit = decoder.readBit(contexts, contextLabel); coefficentsMagnitude[index] = coefficentsMagnitude[index] << 1 | bit; bitsDecoded[index]++; processingFlags[index] |= processedMask; } } } } runCleanupPass() { const decoder = this.decoder; const width = this.width, height = this.height; const neighborsSignificance = this.neighborsSignificance; const coefficentsMagnitude = this.coefficentsMagnitude; const coefficentsSign = this.coefficentsSign; const contexts = this.contexts; const labels = this.contextLabelTable; const bitsDecoded = this.bitsDecoded; const processingFlags = this.processingFlags; const processedMask = 1; const firstMagnitudeBitMask = 2; const oneRowDown = width; const twoRowsDown = width * 2; const threeRowsDown = width * 3; let iNext; for (let i0 = 0; i0 < height; i0 = iNext) { iNext = Math.min(i0 + 4, height); const indexBase = i0 * width; const checkAllEmpty = i0 + 3 < height; for (let j = 0; j < width; j++) { const index0 = indexBase + j; const allEmpty = checkAllEmpty && processingFlags[index0] === 0 && processingFlags[index0 + oneRowDown] === 0 && processingFlags[index0 + twoRowsDown] === 0 && processingFlags[index0 + threeRowsDown] === 0 && neighborsSignificance[index0] === 0 && neighborsSignificance[index0 + oneRowDown] === 0 && neighborsSignificance[index0 + twoRowsDown] === 0 && neighborsSignificance[index0 + threeRowsDown] === 0; let i1 = 0, index = index0; let i = i0, sign; if (allEmpty) { const hasSignificantCoefficent = decoder.readBit(contexts, BitModel.RUNLENGTH_CONTEXT); if (!hasSignificantCoefficent) { bitsDecoded[index0]++; bitsDecoded[index0 + oneRowDown]++; bitsDecoded[index0 + twoRowsDown]++; bitsDecoded[index0 + threeRowsDown]++; continue; } i1 = decoder.readBit(contexts, BitModel.UNIFORM_CONTEXT) << 1 | decoder.readBit(contexts, BitModel.UNIFORM_CONTEXT); if (i1 !== 0) { i = i0 + i1; index += i1 * width; } sign = this.decodeSignBit(i, j, index); coefficentsSign[index] = sign; coefficentsMagnitude[index] = 1; this.setNeighborsSignificance(i, j, index); processingFlags[index] |= firstMagnitudeBitMask; index = index0; for (let i2 = i0; i2 <= i; i2++, index += width) { bitsDecoded[index]++; } i1++; } for (i = i0 + i1; i < iNext; i++, index += width) { if (coefficentsMagnitude[index] || (processingFlags[index] & processedMask) !== 0) { continue; } const contextLabel = labels[neighborsSignificance[index]]; const decision = decoder.readBit(contexts, contextLabel); if (decision === 1) { sign = this.decodeSignBit(i, j, index); coefficentsSign[index] = sign; coefficentsMagnitude[index] = 1; this.setNeighborsSignificance(i, j, index); processingFlags[index] |= firstMagnitudeBitMask; } bitsDecoded[index]++; } } } } checkSegmentationSymbol() { const decoder = this.decoder; const contexts = this.contexts; const symbol = decoder.readBit(contexts, BitModel.UNIFORM_CONTEXT) << 3 | decoder.readBit(contexts, BitModel.UNIFORM_CONTEXT) << 2 | decoder.readBit(contexts, BitModel.UNIFORM_CONTEXT) << 1 | decoder.readBit(contexts, BitModel.UNIFORM_CONTEXT); if (symbol !== 0xa) { throw new JpxError("Invalid segmentation symbol"); } } } class Transform { constructor() { if (this.constructor === Transform) { (0, _util.unreachable)("Cannot initialize Transform."); } } calculate(subbands, u0, v0) { let ll = subbands[0]; for (let i = 1, ii = subbands.length; i < ii; i++) { ll = this.iterate(ll, subbands[i], u0, v0); } return ll; } extend(buffer, offset, size) { let i1 = offset - 1, j1 = offset + 1; let i2 = offset + size - 2, j2 = offset + size; buffer[i1--] = buffer[j1++]; buffer[j2++] = buffer[i2--]; buffer[i1--] = buffer[j1++]; buffer[j2++] = buffer[i2--]; buffer[i1--] = buffer[j1++]; buffer[j2++] = buffer[i2--]; buffer[i1] = buffer[j1]; buffer[j2] = buffer[i2]; } filter(x, offset, length) { (0, _util.unreachable)("Abstract method `filter` called"); } iterate(ll, hl_lh_hh, u0, v0) { const llWidth = ll.width, llHeight = ll.height; let llItems = ll.items; const width = hl_lh_hh.width; const height = hl_lh_hh.height; const items = hl_lh_hh.items; let i, j, k, l, u, v; for (k = 0, i = 0; i < llHeight; i++) { l = i * 2 * width; for (j = 0; j < llWidth; j++, k++, l += 2) { items[l] = llItems[k]; } } llItems = ll.items = null; const bufferPadding = 4; const rowBuffer = new Float32Array(width + 2 * bufferPadding); if (width === 1) { if ((u0 & 1) !== 0) { for (v = 0, k = 0; v < height; v++, k += width) { items[k] *= 0.5; } } } else { for (v = 0, k = 0; v < height; v++, k += width) { rowBuffer.set(items.subarray(k, k + width), bufferPadding); this.extend(rowBuffer, bufferPadding, width); this.filter(rowBuffer, bufferPadding, width); items.set(rowBuffer.subarray(bufferPadding, bufferPadding + width), k); } } let numBuffers = 16; const colBuffers = []; for (i = 0; i < numBuffers; i++) { colBuffers.push(new Float32Array(height + 2 * bufferPadding)); } let b, currentBuffer = 0; ll = bufferPadding + height; if (height === 1) { if ((v0 & 1) !== 0) { for (u = 0; u < width; u++) { items[u] *= 0.5; } } } else { for (u = 0; u < width; u++) { if (currentBuffer === 0) { numBuffers = Math.min(width - u, numBuffers); for (k = u, l = bufferPadding; l < ll; k += width, l++) { for (b = 0; b < numBuffers; b++) { colBuffers[b][l] = items[k + b]; } } currentBuffer = numBuffers; } currentBuffer--; const buffer = colBuffers[currentBuffer]; this.extend(buffer, bufferPadding, height); this.filter(buffer, bufferPadding, height); if (currentBuffer === 0) { k = u - numBuffers + 1; for (l = bufferPadding; l < ll; k += width, l++) { for (b = 0; b < numBuffers; b++) { items[k + b] = colBuffers[b][l]; } } } } } return { width, height, items }; } } class IrreversibleTransform extends Transform { filter(x, offset, length) { const len = length >> 1; offset |= 0; let j, n, current, next; const alpha = -1.586134342059924; const beta = -0.052980118572961; const gamma = 0.882911075530934; const delta = 0.443506852043971; const K = 1.230174104914001; const K_ = 1 / K; j = offset - 3; for (n = len + 4; n--; j += 2) { x[j] *= K_; } j = offset - 2; current = delta * x[j - 1]; for (n = len + 3; n--; j += 2) { next = delta * x[j + 1]; x[j] = K * x[j] - current - next; if (n--) { j += 2; current = delta * x[j + 1]; x[j] = K * x[j] - current - next; } else { break; } } j = offset - 1; current = gamma * x[j - 1]; for (n = len + 2; n--; j += 2) { next = gamma * x[j + 1]; x[j] -= current + next; if (n--) { j += 2; current = gamma * x[j + 1]; x[j] -= current + next; } else { break; } } j = offset; current = beta * x[j - 1]; for (n = len + 1; n--; j += 2) { next = beta * x[j + 1]; x[j] -= current + next; if (n--) { j += 2; current = beta * x[j + 1]; x[j] -= current + next; } else { break; } } if (len !== 0) { j = offset + 1; current = alpha * x[j - 1]; for (n = len; n--; j += 2) { next = alpha * x[j + 1]; x[j] -= current + next; if (n--) { j += 2; current = alpha * x[j + 1]; x[j] -= current + next; } else { break; } } } } } class ReversibleTransform extends Transform { filter(x, offset, length) { const len = length >> 1; offset |= 0; let j, n; for (j = offset, n = len + 1; n--; j += 2) { x[j] -= x[j - 1] + x[j + 1] + 2 >> 2; } for (j = offset + 1, n = len; n--; j += 2) { x[j] += x[j - 1] + x[j + 1] >> 1; } } } /***/ }) /******/ ]); /************************************************************************/ /******/ // The module cache /******/ var __webpack_module_cache__ = {}; /******/ /******/ // The require function /******/ function __w_pdfjs_require__(moduleId) { /******/ // Check if module is in cache /******/ var cachedModule = __webpack_module_cache__[moduleId]; /******/ if (cachedModule !== undefined) { /******/ return cachedModule.exports; /******/ } /******/ // Create a new module (and put it into the cache) /******/ var module = __webpack_module_cache__[moduleId] = { /******/ // no module.id needed /******/ // no module.loaded needed /******/ exports: {} /******/ }; /******/ /******/ // Execute the module function /******/ __webpack_modules__[moduleId](module, module.exports, __w_pdfjs_require__); /******/ /******/ // Return the exports of the module /******/ return module.exports; /******/ } /******/ /************************************************************************/ var __webpack_exports__ = {}; // This entry need to be wrapped in an IIFE because it need to be isolated against other modules in the chunk. (() => { var exports = __webpack_exports__; Object.defineProperty(exports, "__esModule", ({ value: true })); Object.defineProperty(exports, "Jbig2Image", ({ enumerable: true, get: function () { return _jbig.Jbig2Image; } })); Object.defineProperty(exports, "JpegImage", ({ enumerable: true, get: function () { return _jpg.JpegImage; } })); Object.defineProperty(exports, "JpxImage", ({ enumerable: true, get: function () { return _jpx.JpxImage; } })); Object.defineProperty(exports, "getVerbosityLevel", ({ enumerable: true, get: function () { return _util.getVerbosityLevel; } })); Object.defineProperty(exports, "setVerbosityLevel", ({ enumerable: true, get: function () { return _util.setVerbosityLevel; } })); var _util = __w_pdfjs_require__(1); var _jbig = __w_pdfjs_require__(2); var _jpg = __w_pdfjs_require__(8); var _jpx = __w_pdfjs_require__(10); const pdfjsVersion = '3.11.174'; const pdfjsBuild = 'ce8716743'; })(); /******/ return __webpack_exports__; /******/ })() ; }); //# sourceMappingURL=pdf.image_decoders.js.map