pdf-transform
Version:
Transforms PDF to png or html files
7,994 lines • 238 kB
JavaScript
/**
* @licstart The following is the entire license notice for the
* Javascript code in this page
*
* Copyright 2020 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 = factory();
else if(typeof define === 'function' && define.amd)
define("pdfjs-dist/image_decoders/pdf.image_decoders", [], factory);
else if(typeof exports === 'object')
exports["pdfjs-dist/image_decoders/pdf.image_decoders"] = factory();
else
root["pdfjs-dist/image_decoders/pdf.image_decoders"] = root.pdfjsImageDecoders = factory();
})(this, function() {
return /******/ (function(modules) { // webpackBootstrap
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/******/ function __w_pdfjs_require__(moduleId) {
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/******/ return installedModules[moduleId].exports;
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/******/ i: moduleId,
/******/ l: false,
/******/ exports: {}
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/******/
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/******/
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/******/
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/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
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/******/ Object.defineProperty(exports, '__esModule', { value: true });
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/******/
/******/ // create a fake namespace object
/******/ // mode & 1: value is a module id, require it
/******/ // mode & 2: merge all properties of value into the ns
/******/ // mode & 4: return value when already ns object
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/******/ return ns;
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/******/
/******/ // getDefaultExport function for compatibility with non-harmony modules
/******/ __w_pdfjs_require__.n = function(module) {
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/******/ ([
/* 0 */
/***/ (function(module, exports, __w_pdfjs_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "getVerbosityLevel", {
enumerable: true,
get: function () {
return _util.getVerbosityLevel;
}
});
Object.defineProperty(exports, "setVerbosityLevel", {
enumerable: true,
get: function () {
return _util.setVerbosityLevel;
}
});
Object.defineProperty(exports, "Jbig2mage", {
enumerable: true,
get: function () {
return _jbig.Jbig2mage;
}
});
Object.defineProperty(exports, "JpegImage", {
enumerable: true,
get: function () {
return _jpg.JpegImage;
}
});
Object.defineProperty(exports, "JpxImage", {
enumerable: true,
get: function () {
return _jpx.JpxImage;
}
});
var _util = __w_pdfjs_require__(1);
var _jbig = __w_pdfjs_require__(3);
var _jpg = __w_pdfjs_require__(7);
var _jpx = __w_pdfjs_require__(8);
const pdfjsVersion = '2.5.78';
const pdfjsBuild = '9da32087';
/***/ }),
/* 1 */
/***/ (function(module, exports, __w_pdfjs_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.arrayByteLength = arrayByteLength;
exports.arraysToBytes = arraysToBytes;
exports.assert = assert;
exports.bytesToString = bytesToString;
exports.createPromiseCapability = createPromiseCapability;
exports.getVerbosityLevel = getVerbosityLevel;
exports.info = info;
exports.isArrayBuffer = isArrayBuffer;
exports.isArrayEqual = isArrayEqual;
exports.isBool = isBool;
exports.isEmptyObj = isEmptyObj;
exports.isNum = isNum;
exports.isString = isString;
exports.isSameOrigin = isSameOrigin;
exports.createValidAbsoluteUrl = createValidAbsoluteUrl;
exports.removeNullCharacters = removeNullCharacters;
exports.setVerbosityLevel = setVerbosityLevel;
exports.shadow = shadow;
exports.string32 = string32;
exports.stringToBytes = stringToBytes;
exports.stringToPDFString = stringToPDFString;
exports.stringToUTF8String = stringToUTF8String;
exports.utf8StringToString = utf8StringToString;
exports.warn = warn;
exports.unreachable = unreachable;
exports.IsEvalSupportedCached = exports.IsLittleEndianCached = exports.createObjectURL = exports.FormatError = exports.Util = exports.UnknownErrorException = exports.UnexpectedResponseException = exports.TextRenderingMode = exports.StreamType = exports.PermissionFlag = exports.PasswordResponses = exports.PasswordException = exports.NativeImageDecoding = exports.MissingPDFException = exports.InvalidPDFException = exports.AbortException = exports.CMapCompressionType = exports.ImageKind = exports.FontType = exports.AnnotationType = exports.AnnotationStateModelType = exports.AnnotationReviewState = exports.AnnotationReplyType = exports.AnnotationMarkedState = exports.AnnotationFlag = exports.AnnotationFieldFlag = exports.AnnotationBorderStyleType = exports.UNSUPPORTED_FEATURES = exports.VerbosityLevel = exports.OPS = exports.IDENTITY_MATRIX = exports.FONT_IDENTITY_MATRIX = exports.BaseException = void 0;
__w_pdfjs_require__(2);
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 NativeImageDecoding = {
NONE: "none",
DECODE: "decode",
DISPLAY: "display"
};
exports.NativeImageDecoding = NativeImageDecoding;
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 AnnotationStateModelType = {
MARKED: "Marked",
REVIEW: "Review"
};
exports.AnnotationStateModelType = AnnotationStateModelType;
const AnnotationMarkedState = {
MARKED: "Marked",
UNMARKED: "Unmarked"
};
exports.AnnotationMarkedState = AnnotationMarkedState;
const AnnotationReviewState = {
ACCEPTED: "Accepted",
REJECTED: "Rejected",
CANCELLED: "Cancelled",
COMPLETED: "Completed",
NONE: "None"
};
exports.AnnotationReviewState = AnnotationReviewState;
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 StreamType = {
UNKNOWN: "UNKNOWN",
FLATE: "FLATE",
LZW: "LZW",
DCT: "DCT",
JPX: "JPX",
JBIG: "JBIG",
A85: "A85",
AHX: "AHX",
CCF: "CCF",
RLX: "RLX"
};
exports.StreamType = StreamType;
const FontType = {
UNKNOWN: "UNKNOWN",
TYPE1: "TYPE1",
TYPE1C: "TYPE1C",
CIDFONTTYPE0: "CIDFONTTYPE0",
CIDFONTTYPE0C: "CIDFONTTYPE0C",
TRUETYPE: "TRUETYPE",
CIDFONTTYPE2: "CIDFONTTYPE2",
TYPE3: "TYPE3",
OPENTYPE: "OPENTYPE",
TYPE0: "TYPE0",
MMTYPE1: "MMTYPE1"
};
exports.FontType = FontType;
const VerbosityLevel = {
ERRORS: 0,
WARNINGS: 1,
INFOS: 5
};
exports.VerbosityLevel = VerbosityLevel;
const CMapCompressionType = {
NONE: 0,
BINARY: 1,
STREAM: 2
};
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,
beginAnnotations: 78,
endAnnotations: 79,
beginAnnotation: 80,
endAnnotation: 81,
paintJpegXObject: 82,
paintImageMaskXObject: 83,
paintImageMaskXObjectGroup: 84,
paintImageXObject: 85,
paintInlineImageXObject: 86,
paintInlineImageXObjectGroup: 87,
paintImageXObjectRepeat: 88,
paintImageMaskXObjectRepeat: 89,
paintSolidColorImageMask: 90,
constructPath: 91
};
exports.OPS = OPS;
const UNSUPPORTED_FEATURES = {
unknown: "unknown",
forms: "forms",
javaScript: "javaScript",
smask: "smask",
shadingPattern: "shadingPattern",
font: "font"
};
exports.UNSUPPORTED_FEATURES = UNSUPPORTED_FEATURES;
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 isSameOrigin(baseUrl, otherUrl) {
let base;
try {
base = new URL(baseUrl);
if (!base.origin || base.origin === "null") {
return false;
}
} catch (e) {
return false;
}
const other = new URL(otherUrl, base);
return base.origin === other.origin;
}
function _isValidProtocol(url) {
if (!url) {
return false;
}
switch (url.protocol) {
case "http:":
case "https:":
case "ftp:":
case "mailto:":
case "tel:":
return true;
default:
return false;
}
}
function createValidAbsoluteUrl(url, baseUrl) {
if (!url) {
return null;
}
try {
const absoluteUrl = baseUrl ? new URL(url, baseUrl) : new URL(url);
if (_isValidProtocol(absoluteUrl)) {
return absoluteUrl;
}
} catch (ex) {}
return null;
}
function shadow(obj, prop, value) {
Object.defineProperty(obj, prop, {
value,
enumerable: true,
configurable: true,
writable: false
});
return value;
}
const BaseException = function BaseExceptionClosure() {
function BaseException(message) {
if (this.constructor === BaseException) {
unreachable("Cannot initialize BaseException.");
}
this.message = message;
this.name = this.constructor.name;
}
BaseException.prototype = new Error();
BaseException.constructor = BaseException;
return BaseException;
}();
exports.BaseException = BaseException;
class PasswordException extends BaseException {
constructor(msg, code) {
super(msg);
this.code = code;
}
}
exports.PasswordException = PasswordException;
class UnknownErrorException extends BaseException {
constructor(msg, details) {
super(msg);
this.details = details;
}
}
exports.UnknownErrorException = UnknownErrorException;
class InvalidPDFException extends BaseException {}
exports.InvalidPDFException = InvalidPDFException;
class MissingPDFException extends BaseException {}
exports.MissingPDFException = MissingPDFException;
class UnexpectedResponseException extends BaseException {
constructor(msg, status) {
super(msg);
this.status = status;
}
}
exports.UnexpectedResponseException = UnexpectedResponseException;
class FormatError extends BaseException {}
exports.FormatError = FormatError;
class AbortException extends BaseException {}
exports.AbortException = AbortException;
const NullCharactersRegExp = /\x00/g;
function removeNullCharacters(str) {
if (typeof str !== "string") {
warn("The argument for removeNullCharacters must be a string.");
return str;
}
return str.replace(NullCharactersRegExp, "");
}
function bytesToString(bytes) {
assert(bytes !== null && typeof bytes === "object" && bytes.length !== undefined, "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) {
assert(typeof str === "string", "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 arrayByteLength(arr) {
if (arr.length !== undefined) {
return arr.length;
}
assert(arr.byteLength !== undefined);
return arr.byteLength;
}
function arraysToBytes(arr) {
const length = arr.length;
if (length === 1 && arr[0] instanceof Uint8Array) {
return arr[0];
}
let resultLength = 0;
for (let i = 0; i < length; i++) {
resultLength += arrayByteLength(arr[i]);
}
let pos = 0;
const data = new Uint8Array(resultLength);
for (let i = 0; i < length; i++) {
let item = arr[i];
if (!(item instanceof Uint8Array)) {
if (typeof item === "string") {
item = stringToBytes(item);
} else {
item = new Uint8Array(item);
}
}
const itemLength = item.byteLength;
data.set(item, pos);
pos += itemLength;
}
return data;
}
function string32(value) {
return String.fromCharCode(value >> 24 & 0xff, value >> 16 & 0xff, value >> 8 & 0xff, value & 0xff);
}
function isLittleEndian() {
const buffer8 = new Uint8Array(4);
buffer8[0] = 1;
const view32 = new Uint32Array(buffer8.buffer, 0, 1);
return view32[0] === 1;
}
const IsLittleEndianCached = {
get value() {
return shadow(this, "value", isLittleEndian());
}
};
exports.IsLittleEndianCached = IsLittleEndianCached;
function isEvalSupported() {
try {
new Function("");
return true;
} catch (e) {
return false;
}
}
const IsEvalSupportedCached = {
get value() {
return shadow(this, "value", isEvalSupported());
}
};
exports.IsEvalSupportedCached = IsEvalSupportedCached;
const rgbBuf = ["rgb(", 0, ",", 0, ",", 0, ")"];
class Util {
static makeCssRgb(r, g, b) {
rgbBuf[1] = r;
rgbBuf[3] = g;
rgbBuf[5] = b;
return rgbBuf.join("");
}
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 = Util.applyTransform(r, m);
const p2 = Util.applyTransform(r.slice(2, 4), m);
const p3 = Util.applyTransform([r[0], r[3]], m);
const p4 = Util.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 apply3dTransform(m, v) {
return [m[0] * v[0] + m[1] * v[1] + m[2] * v[2], m[3] * v[0] + m[4] * v[1] + m[5] * v[2], m[6] * v[0] + m[7] * v[1] + m[8] * v[2]];
}
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) * (a + d) - 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) {
function compare(a, b) {
return a - b;
}
const orderedX = [rect1[0], rect1[2], rect2[0], rect2[2]].sort(compare);
const orderedY = [rect1[1], rect1[3], rect2[1], rect2[3]].sort(compare);
const result = [];
rect1 = Util.normalizeRect(rect1);
rect2 = Util.normalizeRect(rect2);
if (orderedX[0] === rect1[0] && orderedX[1] === rect2[0] || orderedX[0] === rect2[0] && orderedX[1] === rect1[0]) {
result[0] = orderedX[1];
result[2] = orderedX[2];
} else {
return null;
}
if (orderedY[0] === rect1[1] && orderedY[1] === rect2[1] || orderedY[0] === rect2[1] && orderedY[1] === rect1[1]) {
result[1] = orderedY[1];
result[3] = orderedY[2];
} else {
return null;
}
return result;
}
}
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) {
const length = str.length,
strBuf = [];
if (str[0] === "\xFE" && str[1] === "\xFF") {
for (let i = 2; i < length; i += 2) {
strBuf.push(String.fromCharCode(str.charCodeAt(i) << 8 | str.charCodeAt(i + 1)));
}
} else if (str[0] === "\xFF" && str[1] === "\xFE") {
for (let i = 2; i < length; i += 2) {
strBuf.push(String.fromCharCode(str.charCodeAt(i + 1) << 8 | str.charCodeAt(i)));
}
} else {
for (let i = 0; i < length; ++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 isEmptyObj(obj) {
for (const key in obj) {
return false;
}
return true;
}
function isBool(v) {
return typeof v === "boolean";
}
function isNum(v) {
return typeof v === "number";
}
function isString(v) {
return typeof v === "string";
}
function isArrayBuffer(v) {
return typeof v === "object" && v !== null && v.byteLength !== undefined;
}
function isArrayEqual(arr1, arr2) {
if (arr1.length !== arr2.length) {
return false;
}
return arr1.every(function (element, index) {
return element === arr2[index];
});
}
function createPromiseCapability() {
const capability = Object.create(null);
let isSettled = false;
Object.defineProperty(capability, "settled", {
get() {
return isSettled;
}
});
capability.promise = new Promise(function (resolve, reject) {
capability.resolve = function (data) {
isSettled = true;
resolve(data);
};
capability.reject = function (reason) {
isSettled = true;
reject(reason);
};
});
return capability;
}
const createObjectURL = function createObjectURLClosure() {
const digits = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
return function createObjectURL(data, contentType, forceDataSchema = false) {
if (!forceDataSchema && URL.createObjectURL) {
const blob = new Blob([data], {
type: contentType
});
return URL.createObjectURL(blob);
}
let buffer = `data:${contentType};base64,`;
for (let i = 0, ii = data.length; i < ii; i += 3) {
const b1 = data[i] & 0xff;
const b2 = data[i + 1] & 0xff;
const b3 = data[i + 2] & 0xff;
const d1 = b1 >> 2,
d2 = (b1 & 3) << 4 | b2 >> 4;
const d3 = i + 1 < ii ? (b2 & 0xf) << 2 | b3 >> 6 : 64;
const d4 = i + 2 < ii ? b3 & 0x3f : 64;
buffer += digits[d1] + digits[d2] + digits[d3] + digits[d4];
}
return buffer;
};
}();
exports.createObjectURL = createObjectURL;
/***/ }),
/* 2 */
/***/ (function(module, exports, __w_pdfjs_require__) {
"use strict";
;
/***/ }),
/* 3 */
/***/ (function(module, exports, __w_pdfjs_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.Jbig2Image = void 0;
var _util = __w_pdfjs_require__(1);
var _core_utils = __w_pdfjs_require__(4);
var _arithmetic_decoder = __w_pdfjs_require__(5);
var _ccitt = __w_pdfjs_require__(6);
class Jbig2Error extends _util.BaseException {
constructor(msg) {
super(`JBIG2 error: ${msg}`);
}
}
var Jbig2Image = function Jbig2ImageClosure() {
function ContextCache() {}
ContextCache.prototype = {
getContexts(id) {
if (id in this) {
return this[id];
}
return this[id] = new Int8Array(1 << 16);
}
};
function DecodingContext(data, start, end) {
this.data = data;
this.start = start;
this.end = end;
}
DecodingContext.prototype = {
get decoder() {
var decoder = new _arithmetic_decoder.ArithmeticDecoder(this.data, this.start, this.end);
return (0, _util.shadow)(this, "decoder", decoder);
},
get contextCache() {
var cache = new ContextCache();
return (0, _util.shadow)(this, "contextCache", cache);
}
};
function decodeInteger(contextCache, procedure, decoder) {
var contexts = contextCache.getContexts(procedure);
var prev = 1;
function readBits(length) {
var v = 0;
for (var i = 0; i < length; i++) {
var bit = decoder.readBit(contexts, prev);
prev = prev < 256 ? prev << 1 | bit : (prev << 1 | bit) & 511 | 256;
v = v << 1 | bit;
}
return v >>> 0;
}
var sign = readBits(1);
var 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);
if (sign === 0) {
return value;
} else if (value > 0) {
return -value;
}
return null;
}
function decodeIAID(contextCache, decoder, codeLength) {
var contexts = contextCache.getContexts("IAID");
var prev = 1;
for (var i = 0; i < codeLength; i++) {
var bit = decoder.readBit(contexts, prev);
prev = prev << 1 | bit;
}
if (codeLength < 31) {
return prev & (1 << codeLength) - 1;
}
return prev & 0x7fffffff;
}
var 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"];
var 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
}]];
var 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
}]
}];
var ReusedContexts = [0x9b25, 0x0795, 0x00e5, 0x0195];
var RefinementReusedContexts = [0x0020, 0x0008];
function decodeBitmapTemplate0(width, height, decodingContext) {
var decoder = decodingContext.decoder;
var contexts = decodingContext.contextCache.getContexts("GB");
var contextLabel,
i,
j,
pixel,
row,
row1,
row2,
bitmap = [];
var 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);
}
var useskip = !!skip;
var template = CodingTemplates[templateIndex].concat(at);
template.sort(function (a, b) {
return a.y - b.y || a.x - b.x;
});
var templateLength = template.length;
var templateX = new Int8Array(templateLength);
var templateY = new Int8Array(templateLength);
var changingTemplateEntries = [];
var reuseMask = 0,
minX = 0,
maxX = 0,
minY = 0;
var 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);
}
}
var changingEntriesLength = changingTemplateEntries.length;
var changingTemplateX = new Int8Array(changingEntriesLength);
var changingTemplateY = new Int8Array(changingEntriesLength);
var 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;
}
var sbb_left = -minX;
var sbb_top = -minY;
var sbb_right = width - maxX;
var pseudoPixelContext = ReusedContexts[templateIndex];
var row = new Uint8Array(width);
var bitmap = [];
var decoder = decodingContext.decoder;
var contexts = decodingContext.contextCache.getContexts("GB");
var ltp = 0,
j,
i0,
j0,
contextLabel = 0,
bit,
shift;
for (var i = 0; i < height; i++) {
if (prediction) {
var 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;
}
}
}
}
}
var pixel = decoder.readBit(contexts, contextLabel);
row[j] = pixel;
}
}
return bitmap;
}
function decodeRefinement(width, height, templateIndex, referenceBitmap, offsetX, offsetY, prediction, at, decodingContext) {
var codingTemplate = RefinementTemplates[templateIndex].coding;
if (templateIndex === 0) {
codingTemplate = codingTemplate.concat([at[0]]);
}
var codingTemplateLength = codingTemplate.length;
var codingTemplateX = new Int32Array(codingTemplateLength);
var codingTemplateY = new Int32Array(codingTemplateLength);
var k;
for (k = 0; k < codingTemplateLength; k++) {
codingTemplateX[k] = codingTemplate[k].x;
codingTemplateY[k] = codingTemplate[k].y;
}
var referenceTemplate = RefinementTemplates[templateIndex].reference;
if (templateIndex === 0) {
referenceTemplate = referenceTemplate.concat([at[1]]);
}
var referenceTemplateLength = referenceTemplate.length;
var referenceTemplateX = new Int32Array(referenceTemplateLength);
var referenceTemplateY = new Int32Array(referenceTemplateLength);
for (k = 0; k < referenceTemplateLength; k++) {
referenceTemplateX[k] = referenceTemplate[k].x;
referenceTemplateY[k] = referenceTemplate[k].y;
}
var referenceWidth = referenceBitmap[0].length;
var referenceHeight = referenceBitmap.length;
var pseudoPixelContext = RefinementReusedContexts[templateIndex];
var bitmap = [];
var decoder = decodingContext.decoder;
var contexts = decodingContext.contextCache.getContexts("GR");
var ltp = 0;
for (var i = 0; i < height; i++) {
if (prediction) {
var sltp = decoder.readBit(contexts, pseudoPixelContext);
ltp ^= sltp;
if (ltp) {
throw new Jbig2Error("prediction is not supported");
}
}
var row = new Uint8Array(width);
bitmap.push(row);
for (var j = 0; j < width; j++) {
var i0, j0;
var 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];
}
}
var 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");
}
var newSymbols = [];
var currentHeight = 0;
var symbolCodeLength = (0, _core_utils.log2)(symbols.length + numberOfNewSymbols);
var decoder = decodingContext.decoder;
var contextCache = decodingContext.contextCache;
let tableB1, symbolWidths;
if (huffman) {
tableB1 = getStandardTable(1);
symbolWidths = [];
symbolCodeLength = Math.max(symbolCodeLength, 1);
}
while (newSymbols.length < numberOfNewSymbols) {
var 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) {
var deltaWidth = huffman ? huffmanTables.tableDeltaWidth.decode(huffmanInput) : decodeInteger(contextCache, "IADW", decoder);
if (deltaWidth === null) {
break;
}
currentWidth += deltaWidth;
totalWidth += currentWidth;
var bitmap;
if (refinement) {
var 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 {
var symbolId = decodeIAID(contextCache, decoder, symbolCodeLength);
var rdx = decodeInteger(contextCache, "IARDX", decoder);
var rdy = decodeInteger(contextCache, "IARDY", decoder);
var 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;
}
}
}
}
var exportedSymbols = [];
var flags = [],
currentFlag = false;
var totalSymbolsLength = symbols.length + numberOfNewSymbols;
while (flags.length < totalSymbolsLength) {
var runLength = huffman ? tableB1.decode(huffmanInput) : decodeInteger(contextCache, "IAEX", decoder);
while (runLength--) {
flags.push(currentFlag);
}
currentFlag = !currentFlag;
}
for (var i = 0, ii = symbols.length; i < ii; i++) {
if (flags[i]) {
exportedSymbols.push(symbols[i]);
}
}
for (var 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");
}
var bitmap = [];
var i, row;
for (i = 0; i < height; i++) {
row = new Uint8Array(width);
if (defaultPixelValue) {
for (var j = 0; j < width; j++) {
row[j] = defaultPixelValue;
}
}
bitmap.push(row);
}
var decoder = decodingContext.decoder;
var contextCache = decodingContext.contextCache;
var stripT = huffman ? -huffmanTables.tableDeltaT.decode(huffmanInput) : -decodeInteger(contextCache, "IADT", decoder);
var firstS = 0;
i = 0;
while (i < numberOfSymbolInstances) {
var deltaT = huffman ? huffmanTables.tableDeltaT.decode(huffmanInput) : decodeInteger(contextCache, "IADT", decoder);
stripT += deltaT;
var deltaFirstS = huffman ? huffmanTables.tableFirstS.decode(huffmanInput) : decodeInteger(contextCache, "IAFS", decoder);
firstS += deltaFirstS;
var currentS = firstS;
do {
let currentT = 0;
if (stripSize > 1) {
currentT = huffman ? huffmanInput.readBits(logStripSize) : decodeInteger(contextCache, "IAIT", decoder);
}
var t = stripSize * stripT + currentT;
var symbolId = huffman ? huffmanTables.symbolIDTable.decode(huffmanInput) : decodeIAID(contextCache, decoder, symbolCodeLength);
var applyRefinement = refinement && (huffman ? huffmanInput.readBit() : decodeInteger(contextCache, "IARI", decoder));
var symbolBitmap = inputSymbols[symbolId];
var symbolWidth = symbolBitmap[0].length;
var symbolHeight = symbolBitmap.length;
if (applyRefinement) {
var rdw = decodeInteger(contextCache, "IARDW", decoder);
var rdh = decodeInteger(contextCache, "IARDH", decoder);
var rdx = decodeInteger(contextCache, "IARDX", decoder);
var rdy = decodeInteger(contextCache, "IARDY", decoder);
symbolWidth += rdw;
symbolHeight += rdh;
symbolBitmap = decodeRefinement(symbolWidth, symbolHeight, refinementTemplateIndex, symbolBitmap, (rdw >> 1) + rdx, (rdh >> 1) + rdy, false, refinementAt, decodingContext);
}
var offsetT = t - (referenceCorner & 1 ? 0 : symbolHeight - 1);
var offsetS = currentS - (referenceCorner & 2 ? symbolWidth - 1 : 0);
var s2, t2, symbolRow;
if (transposed) {
for (s2 = 0; s2 < symbolHeight; s2++) {
row = bitmap[offsetS + s2];
if (!row) {
continue;
}
symbolRow = symbolBitmap[s2];
var 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++;
var 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
});
at.push({
x: 2,
y: -2
});
at.push({
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
});
at.push({
x: 2,
y: -2
});
at.push({
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] ^ bit;
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) {
var segmentHeader = {};
segmentHeader.number = (0, _core_utils.readUint32)(data, start);
var flags = data[start + 4];
var segmentType = flags & 0x3f;
if (!SegmentTypes[segmentType]) {
throw new Jbig2Error("invalid segment type: " + segmentType);
}
segmentHeader.type = segmentType;
segmentHeader.typeName = SegmentTypes[segmentType];
segmentHeader.deferredNonRetain = !!(flags & 0x80);
var pageAssociationFieldSize = !!(flags & 0x40);
var referredFlags = data[start + 5];
var referredToCount = referredFlags >> 5 & 7;
var retainBits = [referredFlags & 31];
var position = start + 6;
if (referredFlags === 7) {
referredToCount = (0, _core_utils.readUint32)(data, position - 1) & 0x1fffffff;
position += 3;
var 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;
}
var referredTo = [];
var 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) {
var genericRegionInfo = readRegionSegmentInformation(data, position);
var genericRegionSegmentFlags = data[position + RegionSegmentInformationFieldLength];
var genericRegionMmr = !!(genericRegionSegmentFlags & 1);
var searchPatternLength = 6;
var 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++) {
var 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) {
var segments = [];
var position = start;
while (position < end) {
var segmentHeader = readSegmentHeader(data, position);
position = segmentHeader.headerEnd;
var 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 (var 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
};
}
var RegionSegmentInformationFieldLength = 17;
function processSegment(segment, visitor) {
var header = segment.header;
var data = segment.data,
position = segment.start,
end = segment.end;
var args, at, i, atLength;
switch (header.type) {
case 0:
var dictionary = {};
var 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:
var textRegion = {};
textRegion.info = readRegionSegmentInformation(data, position);
position += RegionSegmentInformationFieldLength;
var 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) {
var 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:
var genericRegion = {};
genericRegion.info = readRegionSegmentInformation(data, position);
position += RegionSegmentInformationFieldLength;
var 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:
var 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;
}
var 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");
}
var callbackName = "on" + header.typeName;
if (callbackName in visitor) {
visitor[callbackName].apply(visitor, args);
}
}
function processSegments(segments, visitor) {
for (var i = 0, ii = segments.length; i < ii; i++) {
processSegment(segments[i], visitor);
}
}
function parseJbig2Chunks(chunks) {
var visitor = new SimpleSegmentVisitor();
for (var i = 0, ii = chunks.length; i < ii; i++) {
var chunk = chunks[i];
var 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
};
}
function SimpleSegmentVisitor() {}
SimpleSegmentVisitor.prototype = {
onPageInformation: function SimpleSegmentVisitor_onPageInformation(info) {
this.currentPageInfo = info;
var rowSize = info.width + 7 >> 3;
var buffer = new Uint8ClampedArray(rowSize * info.height);
if (info.defaultPixelValue) {
for (var i = 0, ii = buffer.length; i < ii; i++) {
buffer[i] = 0xff;
}
}
this.buffer = buffer;
},
drawBitmap: function SimpleSegmentVisitor_drawBitmap(regionInfo, bitmap) {
var pageInfo = this.currentPageInfo;
var width = regionInfo.width,
height = regionInfo.height;
var rowSize = pageInfo.width + 7 >> 3;
var combinationOperator = pageInfo.combinationOperatorOverride ? regionInfo.combinationOperator : pageInfo.combinationOperator;
var buffer = this.buffer;
var mask0 = 128 >> (regionInfo.x & 7);
var offset0 = regionInfo.y * rowSize + (regionInfo.x >> 3);
var 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: function SimpleSegmentVisitor_onImmediateGenericRegion(region, data, start, end) {
var regionInfo = region.info;
var decodingContext = new DecodingContext(data, start, end);
var bitmap = decodeBitmap(region.mmr, regionInfo.width, regionInfo.height, region.template, region.prediction, null, region.at, decodingContext);
this.drawBitmap(regionInfo, bitmap);
},
onImmediateLosslessGenericRegion: function SimpleSegmentVisitor_onImmediateLosslessGenericRegion() {
this.onImmediateGenericRegion.apply(this, arguments);
},
onSymbolDictionary: function SimpleSegmentVisitor_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);
}
var symbols = this.symbols;
if (!symbols) {
this.symbols = symbols = {};
}
var inputSymbols = [];
for (var i = 0, ii = referredSegments.length; i < ii; i++) {
const referredSymbols = symbols[referredSegments[i]];
if (referredSymbols) {
inputSymbols = inputSymbols.concat(referredSymbols);
}
}
var 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: function SimpleSegmentVisitor_onImmediateTextRegion(region, referredSegments, data, start, end) {
var regionInfo = region.info;
let huffmanTables, huffmanInput;
var symbols = this.symbols;
var inputSymbols = [];
for (var i = 0, ii = referredSegments.length; i < ii; i++) {
const referredSymbols = symbols[referredSegments[i]];
if (referredSymbols) {
inputSymbols = inputSymbols.concat(referredSymbols);
}
}
var 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);
}
var decodingContext = new DecodingContext(data, start, end);
var bitmap = decodeTextRegion(region.huffman, region.refinement, regionInfo.width, regionInfo.height, region.defaultPixelValue, region.numberOfSymbolInstances, region.stripSize, inputSymbols, symbolCodeLength, region.transposed, region.dsOffset, region.referenceCorner, region.combinationOperator, huffmanTables, region.refinementTemplate, region.refinementAt, decodingContext, region.logStripSize, huffmanInput);
this.drawBitmap(regionInfo, bitmap);
},
onImmediateLosslessTextRegion: function SimpleSegmentVisitor_onImmediateLosslessTextRegion() {
this.onImmediateTextRegion.apply(this, 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.apply(this, arguments);
},
onTables(currentSegment, data, start, end) {
let customTables = this.customTables;
if (!customTables) {
this.customTables = customTables = {};
}
customTables[currentSegment] = decodeTablesSegment(data, start, end);
}
};
function HuffmanLine(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";
}
}
function HuffmanTreeNode(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;
}
}
HuffmanTreeNode.prototype = {
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);
}
};
function HuffmanTable(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);
}
}
}
HuffmanTable.prototype = {
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;
}
function Reader(data, start, end) {
this.data = data;
this.start = start;
this.end = end;
this.position = start;
this.shift = -1;
this.currentByte = 0;
}
Reader.prototype = {
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;
}
function Jbig2Image() {}
Jbig2Image.prototype = {
parseChunks(chunks) {
return parseJbig2Chunks(chunks);
},
parse(data) {
const {
imgData,
width,
height
} = parseJbig2(data);
this.width = width;
this.height = height;
return imgData;
}
};
return Jbig2Image;
}();
exports.Jbig2Image = Jbig2Image;
/***/ }),
/* 4 */
/***/ (function(module, exports, __w_pdfjs_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.getLookupTableFactory = getLookupTableFactory;
exports.getInheritableProperty = getInheritableProperty;
exports.toRomanNumerals = toRomanNumerals;
exports.log2 = log2;
exports.readInt8 = readInt8;
exports.readUint16 = readUint16;
exports.readUint32 = readUint32;
exports.isWhiteSpace = isWhiteSpace;
exports.XRefParseException = exports.XRefEntryException = exports.MissingDataException = void 0;
var _util = __w_pdfjs_require__(1);
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}, ${end})`);
this.begin = begin;
this.end = end;
}
}
exports.MissingDataException = MissingDataException;
class XRefEntryException extends _util.BaseException {}
exports.XRefEntryException = XRefEntryException;
class XRefParseException extends _util.BaseException {}
exports.XRefParseException = XRefParseException;
function getInheritableProperty({
dict,
key,
getArray = false,
stopWhenFound = true
}) {
const LOOP_LIMIT = 100;
let loopCount = 0;
let values;
while (dict) {
const value = getArray ? dict.getArray(key) : dict.get(key);
if (value !== undefined) {
if (stopWhenFound) {
return value;
}
if (!values) {
values = [];
}
values.push(value);
}
if (++loopCount > LOOP_LIMIT) {
(0, _util.warn)(`getInheritableProperty: maximum loop count exceeded for "${key}"`);
break;
}
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;
}
/***/ }),
/* 5 */
/***/ (function(module, exports, __w_pdfjs_require__) {
"use strict";
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;
/***/ }),
/* 6 */
/***/ (function(module, exports, __w_pdfjs_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.CCITTFaxDecoder = void 0;
var _util = __w_pdfjs_require__(1);
const CCITTFaxDecoder = function CCITTFaxDecoder() {
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]];
function CCITTFaxDecoder(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;
let eoblock = options["EndOfBlock"];
if (eoblock === null || eoblock === undefined) {
eoblock = true;
}
this.eoblock = eoblock;
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);
}
}
CCITTFaxDecoder.prototype = {
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);
}
}
if (codingLine[0] > 0) {
this.outputBits = codingLine[this.codingPos = 0];
} else {
this.outputBits = 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 (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 && 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;
}
if (code >> 5 === 0) {
p = whiteTable1[code];
} else {
p = 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;
}
}
};
return CCITTFaxDecoder;
}();
exports.CCITTFaxDecoder = CCITTFaxDecoder;
/***/ }),
/* 7 */
/***/ (function(module, exports, __w_pdfjs_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.JpegImage = void 0;
var _util = __w_pdfjs_require__(1);
var _core_utils = __w_pdfjs_require__(4);
class JpegError extends _util.BaseException {
constructor(msg) {
super(`JPEG error: ${msg}`);
}
}
class DNLMarkerError extends _util.BaseException {
constructor(message, scanLines) {
super(message);
this.scanLines = scanLines;
}
}
class EOIMarkerError extends _util.BaseException {}
var JpegImage = function JpegImageClosure() {
var 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]);
var dctCos1 = 4017;
var dctSin1 = 799;
var dctCos3 = 3406;
var dctSin3 = 2276;
var dctCos6 = 1567;
var dctSin6 = 3784;
var dctSqrt2 = 5793;
var dctSqrt1d2 = 2896;
function JpegImage({
decodeTransform = null,
colorTransform = -1
} = {}) {
this._decodeTransform = decodeTransform;
this._colorTransform = colorTransform;
}
function buildHuffmanTable(codeLengths, values) {
var k = 0,
code = [],
i,
j,
length = 16;
while (length > 0 && !codeLengths[length - 1]) {
length--;
}
code.push({
children: [],
index: 0
});
var 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) {
var mcusPerLine = frame.mcusPerLine;
var progressive = frame.progressive;
var startOffset = offset,
bitsData = 0,
bitsCount = 0;
function readBit() {
if (bitsCount > 0) {
bitsCount--;
return bitsData >> bitsCount & 1;
}
bitsData = data[offset++];
if (bitsData === 0xff) {
var 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 * 8;
if (maybeScanLines > 0 && maybeScanLines < frame.scanLines / 10) {
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) {
var 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) {
var n = 0;
while (length > 0) {
n = n << 1 | readBit();
length--;
}
return n;
}
function receiveAndExtend(length) {
if (length === 1) {
return readBit() === 1 ? 1 : -1;
}
var n = receive(length);
if (n >= 1 << length - 1) {
return n;
}
return n + (-1 << length) + 1;
}
function decodeBaseline(component, blockOffset) {
var t = decodeHuffman(component.huffmanTableDC);
var diff = t === 0 ? 0 : receiveAndExtend(t);
component.blockData[blockOffset] = component.pred += diff;
var k = 1;
while (k < 64) {
var rs = decodeHuffman(component.huffmanTableAC);
var s = rs & 15,
r = rs >> 4;
if (s === 0) {
if (r < 15) {
break;
}
k += 16;
continue;
}
k += r;
var z = dctZigZag[k];
component.blockData[blockOffset + z] = receiveAndExtend(s);
k++;
}
}
function decodeDCFirst(component, blockOffset) {
var t = decodeHuffman(component.huffmanTableDC);
var diff = t === 0 ? 0 : receiveAndExtend(t) << successive;
component.blockData[blockOffset] = component.pred += diff;
}
function decodeDCSuccessive(component, blockOffset) {
component.blockData[blockOffset] |= readBit() << successive;
}
var eobrun = 0;
function decodeACFirst(component, blockOffset) {
if (eobrun > 0) {
eobrun--;
return;
}
var k = spectralStart,
e = spectralEnd;
while (k <= e) {
var rs = decodeHuffman(component.huffmanTableAC);
var s = rs & 15,
r = rs >> 4;
if (s === 0) {
if (r < 15) {
eobrun = receive(r) + (1 << r) - 1;
break;
}
k += 16;
continue;
}
k += r;
var z = dctZigZag[k];
component.blockData[blockOffset + z] = receiveAndExtend(s) * (1 << successive);
k++;
}
}
var successiveACState = 0,
successiveACNextValue;
function decodeACSuccessive(component, blockOffset) {
var k = spectralStart;
var e = spectralEnd;
var r = 0;
var s;
var 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) {
var mcuRow = mcu / mcusPerLine | 0;
var mcuCol = mcu % mcusPerLine;
blockRow = mcuRow * component.v + row;
var blockCol = mcuCol * component.h + col;
const blockOffset = getBlockBufferOffset(component, blockRow, blockCol);
decode(component, blockOffset);
}
function decodeBlock(component, decode, mcu) {
blockRow = mcu / component.blocksPerLine | 0;
var blockCol = mcu % component.blocksPerLine;
const blockOffset = getBlockBufferOffset(component, blockRow, blockCol);
decode(component, blockOffset);
}
var componentsLength = components.length;
var component, i, j, k, n;
var decodeFn;
if (progressive) {
if (spectralStart === 0) {
decodeFn = successivePrev === 0 ? decodeDCFirst : decodeDCSuccessive;
} else {
decodeFn = successivePrev === 0 ? decodeACFirst : decodeACSuccessive;
}
} else {
decodeFn = decodeBaseline;
}
var mcu = 0,
fileMarker;
var mcuExpected;
if (componentsLength === 1) {
mcuExpected = components[0].blocksPerLine * components[0].blocksPerColumn;
} else {
mcuExpected = mcusPerLine * frame.mcusPerColumn;
}
var h, v;
while (mcu < mcuExpected) {
var mcuToRead = resetInterval ? Math.min(mcuExpected - mcu, resetInterval) : mcuExpected;
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;
} else if (fileMarker.invalid) {
(0, _util.warn)("decodeScan - unexpected MCU data, current marker is: " + fileMarker.invalid);
offset = fileMarker.offset;
}
var marker = fileMarker && fileMarker.marker;
if (!marker || marker <= 0xff00) {
throw new JpegError("decodeScan - a valid marker was not found.");
}
if (marker >= 0xffd0 && marker <= 0xffd7) {
offset += 2;
} else {
break;
}
}
fileMarker = findNextFileMarker(data, offset);
if (fileMarker && fileMarker.invalid) {
(0, _util.warn)("decodeScan - unexpected Scan data, current marker is: " + fileMarker.invalid);
offset = fileMarker.offset;
}
return offset - startOffset;
}
function quantizeAndInverse(component, blockBufferOffset, p) {
var qt = component.quantizationTable,
blockData = component.blockData;
var v0, v1, v2, v3, v4, v5, v6, v7;
var p0, p1, p2, p3, p4, p5, p6, p7;
var t;
if (!qt) {
throw new JpegError("missing required Quantization Table.");
}
for (var 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 (var 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) {
var blocksPerLine = component.blocksPerLine;
var blocksPerColumn = component.blocksPerColumn;
var computationBuffer = new Int16Array(64);
for (var blockRow = 0; blockRow < blocksPerColumn; blockRow++) {
for (var blockCol = 0; blockCol < blocksPerLine; blockCol++) {
var offset = getBlockBufferOffset(component, blockRow, blockCol);
quantizeAndInverse(component, offset, computationBuffer);
}
}
return component.blockData;
}
function findNextFileMarker(data, currentPos, startPos = currentPos) {
const maxPos = data.length - 1;
var newPos = startPos < currentPos ? startPos : currentPos;
if (currentPos >= maxPos) {
return null;
}
var currentMarker = (0, _core_utils.readUint16)(data, currentPos);
if (currentMarker >= 0xffc0 && currentMarker <= 0xfffe) {
return {
invalid: null,
marker: currentMarker,
offset: currentPos
};
}
var 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
};
}
JpegImage.prototype = {
parse(data, {
dnlScanLines = null
} = {}) {
function readDataBlock() {
const length = (0, _core_utils.readUint16)(data, offset);
offset += 2;
let endOffset = offset + length - 2;
var fileMarker = findNextFileMarker(data, endOffset, offset);
if (fileMarker && fileMarker.invalid) {
(0, _util.warn)("readDataBlock - incorrect length, current marker is: " + fileMarker.invalid);
endOffset = fileMarker.offset;
}
var array = data.subarray(offset, endOffset);
offset += array.length;
return array;
}
function prepareComponents(frame) {
var mcusPerLine = Math.ceil(frame.samplesPerLine / 8 / frame.maxH);
var mcusPerColumn = Math.ceil(frame.scanLines / 8 / frame.maxV);
for (var i = 0; i < frame.components.length; i++) {
component = frame.components[i];
var blocksPerLine = Math.ceil(Math.ceil(frame.samplesPerLine / 8) * component.h / frame.maxH);
var blocksPerColumn = Math.ceil(Math.ceil(frame.scanLines / 8) * component.v / frame.maxV);
var blocksPerLineForMcu = mcusPerLine * component.h;
var blocksPerColumnForMcu = mcusPerColumn * component.v;
var blocksBufferSize = 64 * blocksPerColumnForMcu * (blocksPerLineForMcu + 1);
component.blockData = new Int16Array(blocksBufferSize);
component.blocksPerLine = blocksPerLine;
component.blocksPerColumn = blocksPerColumn;
}
frame.mcusPerLine = mcusPerLine;
frame.mcusPerColumn = mcusPerColumn;
}
var offset = 0;
var jfif = null;
var adobe = null;
var frame, resetInterval;
let numSOSMarkers = 0;
var quantizationTables = [];
var 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) {
var 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:
var 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;
var quantizationTablesEnd = quantizationTablesLength + offset - 2;
var z;
while (offset < quantizationTablesEnd) {
var quantizationTableSpec = data[offset++];
var 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 = {};
var componentsCount = data[offset++],
componentId;
var maxH = 0,
maxV = 0;
for (i = 0; i < componentsCount; i++) {
componentId = data[offset];
var h = data[offset + 1] >> 4;
var v = data[offset + 1] & 15;
if (maxH < h) {
maxH = h;
}
if (maxV < v) {
maxV = v;
}
var 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;) {
var huffmanTableSpec = data[offset++];
var codeLengths = new Uint8Array(16);
var codeLengthSum = 0;
for (j = 0; j < 16; j++, offset++) {
codeLengthSum += codeLengths[j] = data[offset];
}
var 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;
var selectorsCount = data[offset++];
var components = [],
component;
for (i = 0; i < selectorsCount; i++) {
var componentIndex = frame.componentIds[data[offset++]];
component = frame.components[componentIndex];
var tableSpec = data[offset++];
component.huffmanTableDC = huffmanTablesDC[tableSpec >> 4];
component.huffmanTableAC = huffmanTablesAC[tableSpec & 15];
components.push(component);
}
var spectralStart = data[offset++];
var spectralEnd = data[offset++];
var successiveApproximation = data[offset++];
try {
var 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 && nextFileMarker.invalid) {
(0, _util.warn)("JpegImage.parse - unexpected data, current marker is: " + nextFileMarker.invalid);
offset = nextFileMarker.offset;
break;
}
if (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 (i = 0; i < frame.components.length; i++) {
component = frame.components[i];
var quantizationTable = quantizationTables[component.quantizationId];
if (quantizationTable) {
component.quantizationTable = quantizationTable;
}
this.components.push({
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) {
var scaleX = this.width / width,
scaleY = this.height / height;
var component, componentScaleX, componentScaleY, blocksPerScanline;
var x, y, i, j, k;
var index;
var offset = 0;
var output;
var numComponents = this.components.length;
var dataLength = width * height * numComponents;
var data = new Uint8ClampedArray(dataLength);
var xScaleBlockOffset = new Uint32Array(width);
var 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;
}
return true;
}
if (this._colorTransform === 1) {
return true;
}
return false;
},
_convertYccToRgb: function convertYccToRgb(data) {
var Y, Cb, Cr;
for (var 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;
},
_convertYcckToRgb: function convertYcckToRgb(data) {
var Y, Cb, Cr, k;
var offset = 0;
for (var 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);
},
_convertYcckToCmyk: function convertYcckToCmyk(data) {
var Y, Cb, Cr;
for (var 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: function convertCmykToRgb(data) {
var c, m, y, k;
var offset = 0;
for (var 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 * (0.00031891311758832814 * 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);
},
getData({
width,
height,
forceRGB = false,
isSourcePDF = false
}) {
if (this.numComponents > 4) {
throw new JpegError("Unsupported color mode");
}
var data = this._getLinearizedBlockData(width, height, isSourcePDF);
if (this.numComponents === 1 && forceRGB) {
var dataLength = data.length;
var rgbData = new Uint8ClampedArray(dataLength * 3);
var offset = 0;
for (var i = 0; i < dataLength; i++) {
var grayColor = data[i];
rgbData[offset++] = grayColor;
rgbData[offset++] = grayColor;
rgbData[offset++] = grayColor;
}
return rgbData;
} else if (this.numComponents === 3 && this._isColorConversionNeeded) {
return this._convertYccToRgb(data);
} else if (this.numComponents === 4) {
if (this._isColorConversionNeeded) {
if (forceRGB) {
return this._convertYcckToRgb(data);
}
return this._convertYcckToCmyk(data);
} else if (forceRGB) {
return this._convertCmykToRgb(data);
}
}
return data;
}
};
return JpegImage;
}();
exports.JpegImage = JpegImage;
/***/ }),
/* 8 */
/***/ (function(module, exports, __w_pdfjs_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.JpxImage = void 0;
var _util = __w_pdfjs_require__(1);
var _core_utils = __w_pdfjs_require__(4);
var _arithmetic_decoder = __w_pdfjs_require__(5);
class JpxError extends _util.BaseException {
constructor(msg) {
super(`JPX error: ${msg}`);
}
}
var JpxImage = function JpxImageClosure() {
var SubbandsGainLog2 = {
LL: 0,
LH: 1,
HL: 1,
HH: 2
};
function JpxImage() {
this.failOnCorruptedImage = false;
}
JpxImage.prototype = {
parse: function JpxImage_parse(data) {
var head = (0, _core_utils.readUint16)(data, 0);
if (head === 0xff4f) {
this.parseCodestream(data, 0, data.length);
return;
}
var position = 0,
length = data.length;
while (position < length) {
var headerSize = 8;
var lbox = (0, _core_utils.readUint32)(data, position);
var 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");
}
var dataLength = lbox - headerSize;
var jumpDataLength = true;
switch (tbox) {
case 0x6a703268:
jumpDataLength = false;
break;
case 0x636f6c72:
var method = data[position];
if (method === 1) {
var 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:
var 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: function JpxImage_parseImageProperties(stream) {
var newByte = stream.getByte();
while (newByte >= 0) {
var oldByte = newByte;
newByte = stream.getByte();
var code = oldByte << 8 | newByte;
if (code === 0xff51) {
stream.skip(4);
var Xsiz = stream.getInt32() >>> 0;
var Ysiz = stream.getInt32() >>> 0;
var XOsiz = stream.getInt32() >>> 0;
var YOsiz = stream.getInt32() >>> 0;
stream.skip(16);
var 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: function JpxImage_parseCodestream(data, start, end) {
var context = {};
var doNotRecover = false;
try {
var position = start;
while (position + 1 < end) {
var code = (0, _core_utils.readUint16)(data, position);
position += 2;
var 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);
var 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);
var componentsCount = (0, _core_utils.readUint16)(data, position + 36);
siz.Csiz = componentsCount;
var components = [];
j = position + 38;
for (var i = 0; i < componentsCount; i++) {
var 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);
var 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) {
var 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);
var qcc = {};
j = position + 2;
var 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) {
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);
var cod = {};
j = position + 2;
var 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;
var 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) {
var precinctsSizes = [];
while (j < length + position) {
var precinctsSize = data[j++];
precinctsSizes.push({
PPx: precinctsSize & 0xf,
PPy: precinctsSize >> 4
});
}
cod.precinctsSizes = precinctsSizes;
}
var unsupported = [];
if (cod.selectiveArithmeticCodingBypass) {
unsupported.push("selectiveArithmeticCodingBypass");
}
if (cod.resetContextProbabilities) {
unsupported.push("resetContextProbabilities");
}
if (cod.terminationOnEachCodingPass) {
unsupported.push("terminationOnEachCodingPass");
}
if (cod.verticallyStripe) {
unsupported.push("verticallyStripe");
}
if (cod.predictableTermination) {
unsupported.push("predictableTermination");
}
if (unsupported.length > 0) {
doNotRecover = true;
throw new Error("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 0xff55:
case 0xff57:
case 0xff58:
case 0xff64:
length = (0, _core_utils.readUint16)(data, position);
break;
case 0xff53:
throw new Error("Codestream code 0xFF53 (COC) is not implemented");
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;
}
};
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) {
var siz = context.SIZ;
var tile,
tiles = [];
var numXtiles = Math.ceil((siz.Xsiz - siz.XTOsiz) / siz.XTsiz);
var numYtiles = Math.ceil((siz.Ysiz - siz.YTOsiz) / siz.YTsiz);
for (var q = 0; q < numYtiles; q++) {
for (var 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;
var componentsCount = siz.Csiz;
for (var i = 0, ii = componentsCount; i < ii; i++) {
var component = components[i];
for (var j = 0, jj = tiles.length; j < jj; j++) {
var 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) {
var codOrCoc = component.codingStyleParameters;
var 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) {
var precinctWidth = 1 << dimensions.PPx;
var precinctHeight = 1 << dimensions.PPy;
var isZeroRes = resolution.resLevel === 0;
var precinctWidthInSubband = 1 << dimensions.PPx + (isZeroRes ? 0 : -1);
var precinctHeightInSubband = 1 << dimensions.PPy + (isZeroRes ? 0 : -1);
var numprecinctswide = resolution.trx1 > resolution.trx0 ? Math.ceil(resolution.trx1 / precinctWidth) - Math.floor(resolution.trx0 / precinctWidth) : 0;
var numprecinctshigh = resolution.try1 > resolution.try0 ? Math.ceil(resolution.try1 / precinctHeight) - Math.floor(resolution.try0 / precinctHeight) : 0;
var numprecincts = numprecinctswide * numprecinctshigh;
resolution.precinctParameters = {
precinctWidth,
precinctHeight,
numprecinctswide,
numprecinctshigh,
numprecincts,
precinctWidthInSubband,
precinctHeightInSubband
};
}
function buildCodeblocks(context, subband, dimensions) {
var xcb_ = dimensions.xcb_;
var ycb_ = dimensions.ycb_;
var codeblockWidth = 1 << xcb_;
var codeblockHeight = 1 << ycb_;
var cbx0 = subband.tbx0 >> xcb_;
var cby0 = subband.tby0 >> ycb_;
var cbx1 = subband.tbx1 + codeblockWidth - 1 >> xcb_;
var cby1 = subband.tby1 + codeblockHeight - 1 >> ycb_;
var precinctParameters = subband.resolution.precinctParameters;
var codeblocks = [];
var precincts = [];
var 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);
var pi = Math.floor((codeblock.tbx0_ - subband.tbx0) / precinctParameters.precinctWidthInSubband);
var 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);
var 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) {
var precinctCodeblocks = [];
var subbands = resolution.subbands;
for (var i = 0, ii = subbands.length; i < ii; i++) {
var subband = subbands[i];
var codeblocks = subband.codeblocks;
for (var j = 0, jj = codeblocks.length; j < jj; j++) {
var codeblock = codeblocks[j];
if (codeblock.precinctNumber !== precinctNumber) {
continue;
}
precinctCodeblocks.push(codeblock);
}
}
return {
layerNumber,
codeblocks: precinctCodeblocks
};
}
function LayerResolutionComponentPositionIterator(context) {
var siz = context.SIZ;
var tileIndex = context.currentTile.index;
var tile = context.tiles[tileIndex];
var layersCount = tile.codingStyleDefaultParameters.layersCount;
var componentsCount = siz.Csiz;
var maxDecompositionLevelsCount = 0;
for (var q = 0; q < componentsCount; q++) {
maxDecompositionLevelsCount = Math.max(maxDecompositionLevelsCount, tile.components[q].codingStyleParameters.decompositionLevelsCount);
}
var 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++) {
var component = tile.components[i];
if (r > component.codingStyleParameters.decompositionLevelsCount) {
continue;
}
var resolution = component.resolutions[r];
var numprecincts = resolution.precinctParameters.numprecincts;
for (; k < numprecincts;) {
var packet = createPacket(resolution, k, l);
k++;
return packet;
}
k = 0;
}
i = 0;
}
r = 0;
}
throw new JpxError("Out of packets");
};
}
function ResolutionLayerComponentPositionIterator(context) {
var siz = context.SIZ;
var tileIndex = context.currentTile.index;
var tile = context.tiles[tileIndex];
var layersCount = tile.codingStyleDefaultParameters.layersCount;
var componentsCount = siz.Csiz;
var maxDecompositionLevelsCount = 0;
for (var q = 0; q < componentsCount; q++) {
maxDecompositionLevelsCount = Math.max(maxDecompositionLevelsCount, tile.components[q].codingStyleParameters.decompositionLevelsCount);
}
var 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++) {
var component = tile.components[i];
if (r > component.codingStyleParameters.decompositionLevelsCount) {
continue;
}
var resolution = component.resolutions[r];
var numprecincts = resolution.precinctParameters.numprecincts;
for (; k < numprecincts;) {
var packet = createPacket(resolution, k, l);
k++;
return packet;
}
k = 0;
}
i = 0;
}
l = 0;
}
throw new JpxError("Out of packets");
};
}
function ResolutionPositionComponentLayerIterator(context) {
var siz = context.SIZ;
var tileIndex = context.currentTile.index;
var tile = context.tiles[tileIndex];
var layersCount = tile.codingStyleDefaultParameters.layersCount;
var componentsCount = siz.Csiz;
var l, r, c, p;
var maxDecompositionLevelsCount = 0;
for (c = 0; c < componentsCount; c++) {
const component = tile.components[c];
maxDecompositionLevelsCount = Math.max(maxDecompositionLevelsCount, component.codingStyleParameters.decompositionLevelsCount);
}
var maxNumPrecinctsInLevel = new Int32Array(maxDecompositionLevelsCount + 1);
for (r = 0; r <= maxDecompositionLevelsCount; ++r) {
var maxNumPrecincts = 0;
for (c = 0; c < componentsCount; ++c) {
var 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;
}
var resolution = component.resolutions[r];
var numprecincts = resolution.precinctParameters.numprecincts;
if (p >= numprecincts) {
continue;
}
for (; l < layersCount;) {
var packet = createPacket(resolution, p, l);
l++;
return packet;
}
l = 0;
}
c = 0;
}
p = 0;
}
throw new JpxError("Out of packets");
};
}
function PositionComponentResolutionLayerIterator(context) {
var siz = context.SIZ;
var tileIndex = context.currentTile.index;
var tile = context.tiles[tileIndex];
var layersCount = tile.codingStyleDefaultParameters.layersCount;
var componentsCount = siz.Csiz;
var precinctsSizes = getPrecinctSizesInImageScale(tile);
var precinctsIterationSizes = precinctsSizes;
var 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++) {
var component = tile.components[c];
var decompositionLevelsCount = component.codingStyleParameters.decompositionLevelsCount;
for (; r <= decompositionLevelsCount; r++) {
var resolution = component.resolutions[r];
var sizeInImageScale = precinctsSizes.components[c].resolutions[r];
var k = getPrecinctIndexIfExist(px, py, sizeInImageScale, precinctsIterationSizes, resolution);
if (k === null) {
continue;
}
for (; l < layersCount;) {
var 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) {
var siz = context.SIZ;
var tileIndex = context.currentTile.index;
var tile = context.tiles[tileIndex];
var layersCount = tile.codingStyleDefaultParameters.layersCount;
var componentsCount = siz.Csiz;
var precinctsSizes = getPrecinctSizesInImageScale(tile);
var l = 0,
r = 0,
c = 0,
px = 0,
py = 0;
this.nextPacket = function JpxImage_nextPacket() {
for (; c < componentsCount; ++c) {
var component = tile.components[c];
var precinctsIterationSizes = precinctsSizes.components[c];
var decompositionLevelsCount = component.codingStyleParameters.decompositionLevelsCount;
for (; py < precinctsIterationSizes.maxNumHigh; py++) {
for (; px < precinctsIterationSizes.maxNumWide; px++) {
for (; r <= decompositionLevelsCount; r++) {
var resolution = component.resolutions[r];
var sizeInImageScale = precinctsIterationSizes.resolutions[r];
var k = getPrecinctIndexIfExist(px, py, sizeInImageScale, precinctsIterationSizes, resolution);
if (k === null) {
continue;
}
for (; l < layersCount;) {
var 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) {
var posX = pxIndex * precinctIterationSizes.minWidth;
var posY = pyIndex * precinctIterationSizes.minHeight;
if (posX % sizeInImageScale.width !== 0 || posY % sizeInImageScale.height !== 0) {
return null;
}
var startPrecinctRowIndex = posY / sizeInImageScale.width * resolution.precinctParameters.numprecinctswide;
return posX / sizeInImageScale.height + startPrecinctRowIndex;
}
function getPrecinctSizesInImageScale(tile) {
var componentsCount = tile.components.length;
var minWidth = Number.MAX_VALUE;
var minHeight = Number.MAX_VALUE;
var maxNumWide = 0;
var maxNumHigh = 0;
var sizePerComponent = new Array(componentsCount);
for (var c = 0; c < componentsCount; c++) {
var component = tile.components[c];
var decompositionLevelsCount = component.codingStyleParameters.decompositionLevelsCount;
var sizePerResolution = new Array(decompositionLevelsCount + 1);
var minWidthCurrentComponent = Number.MAX_VALUE;
var minHeightCurrentComponent = Number.MAX_VALUE;
var maxNumWideCurrentComponent = 0;
var maxNumHighCurrentComponent = 0;
var scale = 1;
for (var r = decompositionLevelsCount; r >= 0; --r) {
var resolution = component.resolutions[r];
var widthCurrentResolution = scale * resolution.precinctParameters.precinctWidth;
var 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) {
var siz = context.SIZ;
var tileIndex = context.currentTile.index;
var tile = context.tiles[tileIndex];
var componentsCount = siz.Csiz;
for (var c = 0; c < componentsCount; c++) {
var component = tile.components[c];
var decompositionLevelsCount = component.codingStyleParameters.decompositionLevelsCount;
var resolutions = [];
var subbands = [];
for (var r = 0; r <= decompositionLevelsCount; r++) {
var blocksDimensions = getBlocksDimensions(context, component, r);
var resolution = {};
var 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);
var 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 {
var bscale = 1 << decompositionLevelsCount - r + 1;
var 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;
}
var 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) {
var position = 0;
var buffer,
bufferSize = 0,
skipNextBit = false;
function readBits(count) {
while (bufferSize < count) {
var 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;
}
var value = readBits(2);
if (value < 3) {
return value + 3;
}
value = readBits(5);
if (value < 31) {
return value + 6;
}
value = readBits(7);
return value + 37;
}
var tileIndex = context.currentTile.index;
var tile = context.tiles[tileIndex];
var sopMarkerUsed = context.COD.sopMarkerUsed;
var ephMarkerUsed = context.COD.ephMarkerUsed;
var packetsIterator = tile.packetsIterator;
while (position < dataLength) {
alignToByte();
if (sopMarkerUsed && skipMarkerIfEqual(0x91)) {
skipBytes(4);
}
var packet = packetsIterator.nextPacket();
if (!readBits(1)) {
continue;
}
var layerNumber = packet.layerNumber;
var queue = [],
codeblock;
for (var i = 0, ii = packet.codeblocks.length; i < ii; i++) {
codeblock = packet.codeblocks[i];
var precinct = codeblock.precinct;
var codeblockColumn = codeblock.cbx - precinct.cbxMin;
var codeblockRow = codeblock.cby - precinct.cbyMin;
var codeblockIncluded = false;
var firstTimeInclusion = false;
var valueReady;
if (codeblock["included"] !== undefined) {
codeblockIncluded = !!readBits(1);
} else {
precinct = codeblock.precinct;
var inclusionTree, zeroBitPlanesTree;
if (precinct["inclusionTree"] !== undefined) {
inclusionTree = precinct.inclusionTree;
} else {
var width = precinct.cbxMax - precinct.cbxMin + 1;
var height = precinct.cbyMax - precinct.cbyMin + 1;
inclusionTree = new InclusionTree(width, height, layerNumber);
zeroBitPlanesTree = new TagTree(width, height);
precinct.inclusionTree = inclusionTree;
precinct.zeroBitPlanesTree = zeroBitPlanesTree;
}
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;
}
var codingpasses = readCodingpasses();
while (readBits(1)) {
codeblock.Lblock++;
}
var codingpassesLog2 = (0, _core_utils.log2)(codingpasses);
var bits = (codingpasses < 1 << codingpassesLog2 ? codingpassesLog2 - 1 : codingpassesLog2) + codeblock.Lblock;
var codedDataLength = readBits(bits);
queue.push({
codeblock,
codingpasses,
dataLength: codedDataLength
});
}
alignToByte();
if (ephMarkerUsed) {
skipMarkerIfEqual(0x92);
}
while (queue.length > 0) {
var 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) {
var x0 = subband.tbx0;
var y0 = subband.tby0;
var width = subband.tbx1 - subband.tbx0;
var codeblocks = subband.codeblocks;
var right = subband.type.charAt(0) === "H" ? 1 : 0;
var bottom = subband.type.charAt(1) === "H" ? levelWidth : 0;
for (var i = 0, ii = codeblocks.length; i < ii; ++i) {
var codeblock = codeblocks[i];
var blockWidth = codeblock.tbx1_ - codeblock.tbx0_;
var blockHeight = codeblock.tby1_ - codeblock.tby0_;
if (blockWidth === 0 || blockHeight === 0) {
continue;
}
if (codeblock["data"] === undefined) {
continue;
}
var bitModel, currentCodingpassType;
bitModel = new BitModel(blockWidth, blockHeight, codeblock.subbandType, codeblock.zeroBitPlanes, mb);
currentCodingpassType = 2;
var data = codeblock.data,
totalLength = 0,
codingpasses = 0;
var j, jj, dataItem;
for (j = 0, jj = data.length; j < jj; j++) {
dataItem = data[j];
totalLength += dataItem.end - dataItem.start;
codingpasses += dataItem.codingpasses;
}
var encodedData = new Uint8Array(totalLength);
var position = 0;
for (j = 0, jj = data.length; j < jj; j++) {
dataItem = data[j];
var chunk = dataItem.data.subarray(dataItem.start, dataItem.end);
encodedData.set(chunk, position);
position += chunk.length;
}
var 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;
}
currentCodingpassType = (currentCodingpassType + 1) % 3;
}
var offset = codeblock.tbx0_ - x0 + (codeblock.tby0_ - y0) * width;
var sign = bitModel.coefficentsSign;
var magnitude = bitModel.coefficentsMagnitude;
var bitsDecoded = bitModel.bitsDecoded;
var magnitudeCorrection = reversible ? 0 : 0.5;
var k, n, nb;
position = 0;
var interleave = subband.type !== "LL";
for (j = 0; j < blockHeight; j++) {
var row = offset / width | 0;
var 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];
var pos = interleave ? levelOffset + (offset << 1) : offset;
if (reversible && nb >= mb) {
coefficients[pos] = n;
} else {
coefficients[pos] = n * (1 << mb - nb);
}
}
offset++;
position++;
}
offset += width - blockWidth;
}
}
}
function transformTile(context, tile, c) {
var component = tile.components[c];
var codingStyleParameters = component.codingStyleParameters;
var quantizationParameters = component.quantizationParameters;
var decompositionLevelsCount = codingStyleParameters.decompositionLevelsCount;
var spqcds = quantizationParameters.SPqcds;
var scalarExpounded = quantizationParameters.scalarExpounded;
var guardBits = quantizationParameters.guardBits;
var segmentationSymbolUsed = codingStyleParameters.segmentationSymbolUsed;
var precision = context.components[c].precision;
var reversible = codingStyleParameters.reversibleTransformation;
var transform = reversible ? new ReversibleTransform() : new IrreversibleTransform();
var subbandCoefficients = [];
var b = 0;
for (var i = 0; i <= decompositionLevelsCount; i++) {
var resolution = component.resolutions[i];
var width = resolution.trx1 - resolution.trx0;
var height = resolution.try1 - resolution.try0;
var coefficients = new Float32Array(width * height);
for (var j = 0, jj = resolution.subbands.length; j < jj; j++) {
var 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++;
}
var subband = resolution.subbands[j];
var gainLog2 = SubbandsGainLog2[subband.type];
var delta = reversible ? 1 : 2 ** (precision + gainLog2 - epsilon) * (1 + mu / 2048);
var mb = guardBits + epsilon - 1;
copyCoefficients(coefficients, width, height, subband, delta, mb, reversible, segmentationSymbolUsed);
}
subbandCoefficients.push({
width,
height,
items: coefficients
});
}
var 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) {
var siz = context.SIZ;
var components = context.components;
var componentsCount = siz.Csiz;
var resultImages = [];
for (var i = 0, ii = context.tiles.length; i < ii; i++) {
var tile = context.tiles[i];
var transformedTiles = [];
var c;
for (c = 0; c < componentsCount; c++) {
transformedTiles[c] = transformTile(context, tile, c);
}
var tile0 = transformedTiles[0];
var out = new Uint8ClampedArray(tile0.items.length * componentsCount);
var result = {
left: tile0.left,
top: tile0.top,
width: tile0.width,
height: tile0.height,
items: out
};
var shift, offset;
var pos = 0,
j,
jj,
y0,
y1,
y2;
if (tile.codingStyleDefaultParameters.multipleComponentTransform) {
var fourComponents = componentsCount === 4;
var y0items = transformedTiles[0].items;
var y1items = transformedTiles[1].items;
var y2items = transformedTiles[2].items;
var y3items = fourComponents ? transformedTiles[3].items : null;
shift = components[0].precision - 8;
offset = (128 << shift) + 0.5;
var component0 = tile.components[0];
var 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 (c = 0; c < componentsCount; c++) {
var 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) {
var siz = context.SIZ;
var componentsCount = siz.Csiz;
var tile = context.tiles[tileIndex];
for (var c = 0; c < componentsCount; c++) {
var component = tile.components[c];
var qcdOrQcc = context.currentTile.QCC[c] !== undefined ? context.currentTile.QCC[c] : context.currentTile.QCD;
component.quantizationParameters = qcdOrQcc;
var codOrCoc = context.currentTile.COC[c] !== undefined ? context.currentTile.COC[c] : context.currentTile.COD;
component.codingStyleParameters = codOrCoc;
}
tile.codingStyleDefaultParameters = context.currentTile.COD;
}
var TagTree = function TagTreeClosure() {
function TagTree(width, height) {
var levelsLength = (0, _core_utils.log2)(Math.max(width, height)) + 1;
this.levels = [];
for (var i = 0; i < levelsLength; i++) {
var level = {
width,
height,
items: []
};
this.levels.push(level);
width = Math.ceil(width / 2);
height = Math.ceil(height / 2);
}
}
TagTree.prototype = {
reset: function TagTree_reset(i, j) {
var currentLevel = 0,
value = 0,
level;
while (currentLevel < this.levels.length) {
level = this.levels[currentLevel];
var 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: function TagTree_incrementValue() {
var level = this.levels[this.currentLevel];
level.items[level.index]++;
},
nextLevel: function TagTree_nextLevel() {
var currentLevel = this.currentLevel;
var level = this.levels[currentLevel];
var 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;
}
};
return TagTree;
}();
var InclusionTree = function InclusionTreeClosure() {
function InclusionTree(width, height, defaultValue) {
var levelsLength = (0, _core_utils.log2)(Math.max(width, height)) + 1;
this.levels = [];
for (var i = 0; i < levelsLength; i++) {
var items = new Uint8Array(width * height);
for (var j = 0, jj = items.length; j < jj; j++) {
items[j] = defaultValue;
}
var level = {
width,
height,
items
};
this.levels.push(level);
width = Math.ceil(width / 2);
height = Math.ceil(height / 2);
}
}
InclusionTree.prototype = {
reset: function InclusionTree_reset(i, j, stopValue) {
var currentLevel = 0;
while (currentLevel < this.levels.length) {
var level = this.levels[currentLevel];
var index = i + j * level.width;
level.index = index;
var 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: function InclusionTree_incrementValue(stopValue) {
var level = this.levels[this.currentLevel];
level.items[level.index] = stopValue + 1;
this.propagateValues();
},
propagateValues: function InclusionTree_propagateValues() {
var levelIndex = this.currentLevel;
var level = this.levels[levelIndex];
var currentValue = level.items[level.index];
while (--levelIndex >= 0) {
level = this.levels[levelIndex];
level.items[level.index] = currentValue;
}
},
nextLevel: function InclusionTree_nextLevel() {
var currentLevel = this.currentLevel;
var level = this.levels[currentLevel];
var 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;
}
};
return InclusionTree;
}();
var BitModel = function BitModelClosure() {
var UNIFORM_CONTEXT = 17;
var RUNLENGTH_CONTEXT = 18;
var 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]);
var 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]);
var 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]);
function BitModel(width, height, subband, zeroBitPlanes, mb) {
this.width = width;
this.height = height;
let contextLabelTable;
if (subband === "HH") {
contextLabelTable = HHContextLabel;
} else if (subband === "HL") {
contextLabelTable = HLContextLabel;
} else {
contextLabelTable = LLAndLHContextsLabel;
}
this.contextLabelTable = contextLabelTable;
var 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);
var bitsDecoded = new Uint8Array(coefficientCount);
if (zeroBitPlanes !== 0) {
for (var i = 0; i < coefficientCount; i++) {
bitsDecoded[i] = zeroBitPlanes;
}
}
this.bitsDecoded = bitsDecoded;
this.reset();
}
BitModel.prototype = {
setDecoder: function BitModel_setDecoder(decoder) {
this.decoder = decoder;
},
reset: function BitModel_reset() {
this.contexts = new Int8Array(19);
this.contexts[0] = 4 << 1 | 0;
this.contexts[UNIFORM_CONTEXT] = 46 << 1 | 0;
this.contexts[RUNLENGTH_CONTEXT] = 3 << 1 | 0;
},
setNeighborsSignificance: function BitModel_setNeighborsSignificance(row, column, index) {
var neighborsSignificance = this.neighborsSignificance;
var width = this.width,
height = this.height;
var left = column > 0;
var right = column + 1 < width;
var 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: function BitModel_runSignificancePropagationPass() {
var decoder = this.decoder;
var width = this.width,
height = this.height;
var coefficentsMagnitude = this.coefficentsMagnitude;
var coefficentsSign = this.coefficentsSign;
var neighborsSignificance = this.neighborsSignificance;
var processingFlags = this.processingFlags;
var contexts = this.contexts;
var labels = this.contextLabelTable;
var bitsDecoded = this.bitsDecoded;
var processedInverseMask = ~1;
var processedMask = 1;
var firstMagnitudeBitMask = 2;
for (var i0 = 0; i0 < height; i0 += 4) {
for (var j = 0; j < width; j++) {
var index = i0 * width + j;
for (var i1 = 0; i1 < 4; i1++, index += width) {
var i = i0 + i1;
if (i >= height) {
break;
}
processingFlags[index] &= processedInverseMask;
if (coefficentsMagnitude[index] || !neighborsSignificance[index]) {
continue;
}
var contextLabel = labels[neighborsSignificance[index]];
var decision = decoder.readBit(contexts, contextLabel);
if (decision) {
var 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: function BitModel_decodeSignBit(row, column, index) {
var width = this.width,
height = this.height;
var coefficentsMagnitude = this.coefficentsMagnitude;
var coefficentsSign = this.coefficentsSign;
var contribution, sign0, sign1, significance1;
var 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;
}
var 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: function BitModel_runMagnitudeRefinementPass() {
var decoder = this.decoder;
var width = this.width,
height = this.height;
var coefficentsMagnitude = this.coefficentsMagnitude;
var neighborsSignificance = this.neighborsSignificance;
var contexts = this.contexts;
var bitsDecoded = this.bitsDecoded;
var processingFlags = this.processingFlags;
var processedMask = 1;
var firstMagnitudeBitMask = 2;
var length = width * height;
var width4 = width * 4;
for (var index0 = 0, indexNext; index0 < length; index0 = indexNext) {
indexNext = Math.min(length, index0 + width4);
for (var j = 0; j < width; j++) {
for (var index = index0 + j; index < indexNext; index += width) {
if (!coefficentsMagnitude[index] || (processingFlags[index] & processedMask) !== 0) {
continue;
}
var contextLabel = 16;
if ((processingFlags[index] & firstMagnitudeBitMask) !== 0) {
processingFlags[index] ^= firstMagnitudeBitMask;
var significance = neighborsSignificance[index] & 127;
contextLabel = significance === 0 ? 15 : 14;
}
var bit = decoder.readBit(contexts, contextLabel);
coefficentsMagnitude[index] = coefficentsMagnitude[index] << 1 | bit;
bitsDecoded[index]++;
processingFlags[index] |= processedMask;
}
}
}
},
runCleanupPass: function BitModel_runCleanupPass() {
var decoder = this.decoder;
var width = this.width,
height = this.height;
var neighborsSignificance = this.neighborsSignificance;
var coefficentsMagnitude = this.coefficentsMagnitude;
var coefficentsSign = this.coefficentsSign;
var contexts = this.contexts;
var labels = this.contextLabelTable;
var bitsDecoded = this.bitsDecoded;
var processingFlags = this.processingFlags;
var processedMask = 1;
var firstMagnitudeBitMask = 2;
var oneRowDown = width;
var twoRowsDown = width * 2;
var threeRowsDown = width * 3;
var iNext;
for (var i0 = 0; i0 < height; i0 = iNext) {
iNext = Math.min(i0 + 4, height);
var indexBase = i0 * width;
var checkAllEmpty = i0 + 3 < height;
for (var j = 0; j < width; j++) {
var index0 = indexBase + j;
var 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;
var i1 = 0,
index = index0;
var i = i0,
sign;
if (allEmpty) {
var hasSignificantCoefficent = decoder.readBit(contexts, RUNLENGTH_CONTEXT);
if (!hasSignificantCoefficent) {
bitsDecoded[index0]++;
bitsDecoded[index0 + oneRowDown]++;
bitsDecoded[index0 + twoRowsDown]++;
bitsDecoded[index0 + threeRowsDown]++;
continue;
}
i1 = decoder.readBit(contexts, UNIFORM_CONTEXT) << 1 | decoder.readBit(contexts, 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 (var 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;
}
var contextLabel = labels[neighborsSignificance[index]];
var 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: function BitModel_checkSegmentationSymbol() {
var decoder = this.decoder;
var contexts = this.contexts;
var symbol = decoder.readBit(contexts, UNIFORM_CONTEXT) << 3 | decoder.readBit(contexts, UNIFORM_CONTEXT) << 2 | decoder.readBit(contexts, UNIFORM_CONTEXT) << 1 | decoder.readBit(contexts, UNIFORM_CONTEXT);
if (symbol !== 0xa) {
throw new JpxError("Invalid segmentation symbol");
}
}
};
return BitModel;
}();
var Transform = function TransformClosure() {
function Transform() {}
Transform.prototype.calculate = function transformCalculate(subbands, u0, v0) {
var ll = subbands[0];
for (var i = 1, ii = subbands.length; i < ii; i++) {
ll = this.iterate(ll, subbands[i], u0, v0);
}
return ll;
};
Transform.prototype.extend = function extend(buffer, offset, size) {
var i1 = offset - 1,
j1 = offset + 1;
var 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];
};
Transform.prototype.iterate = function Transform_iterate(ll, hl_lh_hh, u0, v0) {
var llWidth = ll.width,
llHeight = ll.height,
llItems = ll.items;
var width = hl_lh_hh.width;
var height = hl_lh_hh.height;
var items = hl_lh_hh.items;
var 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;
var bufferPadding = 4;
var 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);
}
}
var numBuffers = 16;
var colBuffers = [];
for (i = 0; i < numBuffers; i++) {
colBuffers.push(new Float32Array(height + 2 * bufferPadding));
}
var 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--;
var 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
};
};
return Transform;
}();
var IrreversibleTransform = function IrreversibleTransformClosure() {
function IrreversibleTransform() {
Transform.call(this);
}
IrreversibleTransform.prototype = Object.create(Transform.prototype);
IrreversibleTransform.prototype.filter = function irreversibleTransformFilter(x, offset, length) {
var len = length >> 1;
offset = offset | 0;
var j, n, current, next;
var alpha = -1.586134342059924;
var beta = -0.052980118572961;
var gamma = 0.882911075530934;
var delta = 0.443506852043971;
var K = 1.230174104914001;
var 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;
}
}
}
};
return IrreversibleTransform;
}();
var ReversibleTransform = function ReversibleTransformClosure() {
function ReversibleTransform() {
Transform.call(this);
}
ReversibleTransform.prototype = Object.create(Transform.prototype);
ReversibleTransform.prototype.filter = function reversibleTransformFilter(x, offset, length) {
var len = length >> 1;
offset = offset | 0;
var 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;
}
};
return ReversibleTransform;
}();
return JpxImage;
}();
exports.JpxImage = JpxImage;
/***/ })
/******/ ]);
});
//# sourceMappingURL=pdf.image_decoders.js.map