pdfjs-dist
Version:
Generic build of Mozilla's PDF.js library.
5,457 lines • 167 kB
JavaScript
/**
* @licstart The following is the entire license notice for the
* JavaScript code in this page
*
* Copyright 2024 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
*/
/**
* pdfjsVersion = 6.3.289
* pdfjsBuild = 1c8020a7d
*/
;// ./src/shared/util.js
const isNodeJS = typeof process === "object" && process + "" === "[object process]" && !process.versions.nw && !(process.versions.electron && process.type && process.type !== "browser");
const BBOX_INIT = [Infinity, Infinity, -Infinity, -Infinity];
const F32_BBOX_INIT = new Float32Array(BBOX_INIT);
const FONT_IDENTITY_MATRIX = (/* unused pure expression or super */ null && ([0.001, 0, 0, 0.001, 0, 0]));
const LINE_FACTOR = 1.35;
const LINE_DESCENT_FACTOR = 0.35;
const BASELINE_FACTOR = (/* unused pure expression or super */ null && (LINE_DESCENT_FACTOR / LINE_FACTOR));
const SVG_NS = "http://www.w3.org/2000/svg";
const RenderingIntentFlag = (/* unused pure expression or super */ null && ({
ANY: 0x01,
DISPLAY: 0x02,
PRINT: 0x04,
SAVE: 0x08,
ANNOTATIONS_FORMS: 0x10,
ANNOTATIONS_STORAGE: 0x20,
ANNOTATIONS_DISABLE: 0x40,
IS_EDITING: 0x80,
OPLIST: 0x100
}));
const AnnotationMode = (/* unused pure expression or super */ null && ({
DISABLE: 0,
ENABLE: 1,
ENABLE_FORMS: 2,
ENABLE_STORAGE: 3
}));
const AnnotationPrefix = "pdfjs_internal_id_";
const AnnotationEditorPrefix = "pdfjs_internal_editor_";
const AnnotationEditorType = (/* unused pure expression or super */ null && ({
DISABLE: -1,
NONE: 0,
FREETEXT: 3,
HIGHLIGHT: 9,
STAMP: 13,
INK: 15,
POPUP: 16,
SIGNATURE: 101,
COMMENT: 102
}));
const AnnotationEditorParamsType = (/* unused pure expression or super */ null && ({
RESIZE: 1,
CREATE: 2,
FREETEXT_SIZE: 11,
FREETEXT_COLOR: 12,
FREETEXT_OPACITY: 13,
INK_COLOR: 21,
INK_THICKNESS: 22,
INK_OPACITY: 23,
INK_COLOR_AND_OPACITY: 24,
HIGHLIGHT_COLOR: 31,
HIGHLIGHT_THICKNESS: 32,
HIGHLIGHT_FREE: 33,
HIGHLIGHT_SHOW_ALL: 34,
DRAW_STEP: 41
}));
const PermissionFlag = (/* unused pure expression or super */ null && ({
PRINT: 0x04,
MODIFY_CONTENTS: 0x08,
COPY: 0x10,
MODIFY_ANNOTATIONS: 0x20,
FILL_INTERACTIVE_FORMS: 0x100,
COPY_FOR_ACCESSIBILITY: 0x200,
ASSEMBLE: 0x400,
PRINT_HIGH_QUALITY: 0x800
}));
const MeshFigureType = (/* unused pure expression or super */ null && ({
TRIANGLES: 1,
LATTICE: 2,
PATCH: 3
}));
const TextRenderingMode = (/* unused pure expression or super */ null && ({
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
}));
const ImageKind = (/* unused pure expression or super */ null && ({
GRAYSCALE_1BPP: 1,
RGB_24BPP: 2,
RGBA_32BPP: 3
}));
const AnnotationType = (/* unused pure expression or super */ null && ({
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,
RICHMEDIA: 27
}));
const AnnotationReplyType = (/* unused pure expression or super */ null && ({
GROUP: "Group",
REPLY: "R"
}));
const AnnotationRenditionOperation = (/* unused pure expression or super */ null && ({
PLAY_OR_RESUME: 0,
STOP: 1,
PAUSE: 2,
RESUME: 3,
PLAY: 4
}));
const AnnotationFlag = (/* unused pure expression or super */ null && ({
INVISIBLE: 0x01,
HIDDEN: 0x02,
PRINT: 0x04,
NOZOOM: 0x08,
NOROTATE: 0x10,
NOVIEW: 0x20,
READONLY: 0x40,
LOCKED: 0x80,
TOGGLENOVIEW: 0x100,
LOCKEDCONTENTS: 0x200
}));
const AnnotationFieldFlag = (/* unused pure expression or super */ null && ({
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
}));
const AnnotationBorderStyleType = (/* unused pure expression or super */ null && ({
SOLID: 1,
DASHED: 2,
BEVELED: 3,
INSET: 4,
UNDERLINE: 5
}));
const AnnotationActionEventType = (/* unused pure expression or super */ null && ({
E: "Mouse Enter",
X: "Mouse Exit",
D: "Mouse Down",
U: "Mouse Up",
Fo: "Focus",
Bl: "Blur",
PO: "PageOpen",
PC: "PageClose",
PV: "PageVisible",
PI: "PageInvisible",
K: "Keystroke",
F: "Format",
V: "Validate",
C: "Calculate"
}));
const DocumentActionEventType = (/* unused pure expression or super */ null && ({
WC: "WillClose",
WS: "WillSave",
DS: "DidSave",
WP: "WillPrint",
DP: "DidPrint"
}));
const PageActionEventType = (/* unused pure expression or super */ null && ({
O: "PageOpen",
C: "PageClose"
}));
const VerbosityLevel = {
ERRORS: 0,
WARNINGS: 1,
INFOS: 5
};
const OPS = (/* unused pure expression or super */ null && ({
dependency: 1,
setLineWidth: 2,
setLineCap: 3,
setLineJoin: 4,
setMiterLimit: 5,
setDash: 6,
setRenderingIntent: 7,
setFlatness: 8,
setGState: 9,
save: 10,
restore: 11,
transform: 12,
moveTo: 13,
lineTo: 14,
curveTo: 15,
curveTo2: 16,
curveTo3: 17,
closePath: 18,
rectangle: 19,
stroke: 20,
closeStroke: 21,
fill: 22,
eoFill: 23,
fillStroke: 24,
eoFillStroke: 25,
closeFillStroke: 26,
closeEOFillStroke: 27,
endPath: 28,
clip: 29,
eoClip: 30,
beginText: 31,
endText: 32,
setCharSpacing: 33,
setWordSpacing: 34,
setHScale: 35,
setLeading: 36,
setFont: 37,
setTextRenderingMode: 38,
setTextRise: 39,
moveText: 40,
setLeadingMoveText: 41,
setTextMatrix: 42,
nextLine: 43,
showText: 44,
showSpacedText: 45,
nextLineShowText: 46,
nextLineSetSpacingShowText: 47,
setCharWidth: 48,
setCharWidthAndBounds: 49,
setStrokeColorSpace: 50,
setFillColorSpace: 51,
setStrokeColor: 52,
setStrokeColorN: 53,
setFillColor: 54,
setFillColorN: 55,
setStrokeGray: 56,
setFillGray: 57,
setStrokeRGBColor: 58,
setFillRGBColor: 59,
setStrokeCMYKColor: 60,
setFillCMYKColor: 61,
shadingFill: 62,
beginInlineImage: 63,
beginImageData: 64,
endInlineImage: 65,
paintXObject: 66,
markPoint: 67,
markPointProps: 68,
beginMarkedContent: 69,
beginMarkedContentProps: 70,
endMarkedContent: 71,
beginCompat: 72,
endCompat: 73,
paintFormXObjectBegin: 74,
paintFormXObjectEnd: 75,
beginGroup: 76,
endGroup: 77,
beginAnnotation: 80,
endAnnotation: 81,
paintImageMaskXObject: 83,
paintImageMaskXObjectGroup: 84,
paintImageXObject: 85,
paintInlineImageXObject: 86,
paintInlineImageXObjectGroup: 87,
paintImageXObjectRepeat: 88,
paintImageMaskXObjectRepeat: 89,
paintSolidColorImageMask: 90,
constructPath: 91,
setStrokeTransparent: 92,
setFillTransparent: 93,
rawFillPath: 94
}));
const DrawOPS = (/* unused pure expression or super */ null && ({
moveTo: 0,
lineTo: 1,
curveTo: 2,
quadraticCurveTo: 3,
closePath: 4
}));
const PasswordResponses = (/* unused pure expression or super */ null && ({
NEED_PASSWORD: 1,
INCORRECT_PASSWORD: 2
}));
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.info(`Info: ${msg}`);
}
}
function warn(msg) {
if (verbosity >= VerbosityLevel.WARNINGS) {
console.warn(`Warning: ${msg}`);
}
}
function unreachable(msg) {
throw new Error(msg);
}
function assert(cond, msg) {
if (!cond) {
unreachable(msg);
}
}
function _isValidProtocol(url) {
switch (url?.protocol) {
case "http:":
case "https:":
case "ftp:":
case "mailto:":
case "tel:":
return true;
default:
return false;
}
}
function createValidAbsoluteUrl(url, baseUrl = null, options = null) {
if (!url) {
return null;
}
if (options && typeof url === "string") {
if (options.addDefaultProtocol && url.startsWith("www.")) {
const dots = url.match(/\./g);
if (dots?.length >= 2) {
url = `http://${url}`;
}
}
if (options.tryConvertEncoding) {
try {
url = stringToUTF8String(url);
} catch {}
}
}
const absoluteUrl = baseUrl ? URL.parse(url, baseUrl) : URL.parse(url);
return _isValidProtocol(absoluteUrl) ? absoluteUrl : null;
}
function updateUrlHash(url, hash, allowRel = false) {
const res = URL.parse(url);
if (res) {
res.hash = hash;
return res.href;
}
if (allowRel && createValidAbsoluteUrl(url, "http://example.com")) {
return url.split("#", 1)[0] + `${hash ? `#${hash}` : ""}`;
}
return "";
}
function stripPath(str) {
return str.substring(str.lastIndexOf("/") + 1);
}
function shadow(obj, prop, value, nonSerializable = false) {
Object.defineProperty(obj, prop, {
value,
enumerable: !nonSerializable,
configurable: true,
writable: false
});
return value;
}
const BaseException = function BaseExceptionClosure() {
function BaseException(message, name) {
this.message = message;
this.name = name;
}
BaseException.prototype = new Error();
BaseException.constructor = BaseException;
return BaseException;
}();
class PasswordException extends BaseException {
constructor(msg, code) {
super(msg, "PasswordException");
this.code = code;
}
}
class UnknownErrorException extends BaseException {
constructor(msg, details) {
super(msg, "UnknownErrorException");
this.details = details;
}
}
class InvalidPDFException extends BaseException {
constructor(msg) {
super(msg, "InvalidPDFException");
}
}
class ResponseException extends BaseException {
constructor(msg, status, missing) {
super(msg, "ResponseException");
this.status = status;
this.missing = missing;
}
}
class FormatError extends BaseException {
constructor(msg) {
super(msg, "FormatError");
}
}
class AbortException extends BaseException {
constructor(msg) {
super(msg, "AbortException");
}
}
function bytesToString(bytes) {
if (typeof bytes !== "object" || bytes?.length === undefined) {
unreachable("Invalid argument for bytesToString");
}
const length = bytes.length;
const MAX_ARGUMENT_COUNT = 8192;
if (length < MAX_ARGUMENT_COUNT) {
return String.fromCharCode.apply(null, bytes);
}
const strBuf = [];
for (let i = 0; i < length; i += MAX_ARGUMENT_COUNT) {
const chunkEnd = Math.min(i + MAX_ARGUMENT_COUNT, length);
const chunk = bytes.subarray(i, chunkEnd);
strBuf.push(String.fromCharCode.apply(null, chunk));
}
return strBuf.join("");
}
function stringToBytes(str) {
if (typeof str !== "string") {
unreachable("Invalid argument for stringToBytes");
}
const length = str.length;
const bytes = new Uint8Array(length);
for (let i = 0; i < length; ++i) {
bytes[i] = str.charCodeAt(i) & 0xff;
}
return bytes;
}
class FeatureTest {
static get isLittleEndian() {
const buffer8 = new Uint8Array(4);
buffer8[0] = 1;
const view32 = new Uint32Array(buffer8.buffer, 0, 1);
return shadow(this, "isLittleEndian", view32[0] === 1);
}
static get isOffscreenCanvasSupported() {
return shadow(this, "isOffscreenCanvasSupported", typeof OffscreenCanvas !== "undefined");
}
static get isImageDecoderSupported() {
return shadow(this, "isImageDecoderSupported", typeof ImageDecoder !== "undefined");
}
static get isFloat16ArraySupported() {
return shadow(this, "isFloat16ArraySupported", typeof Float16Array !== "undefined");
}
static get isSanitizerSupported() {
return shadow(this, "isSanitizerSupported", typeof Sanitizer !== "undefined");
}
static get platform() {
const {
platform,
userAgent
} = navigator;
return shadow(this, "platform", {
isAndroid: userAgent.includes("Android"),
isLinux: platform.includes("Linux"),
isMac: platform.includes("Mac"),
isWindows: platform.includes("Win"),
isFirefox: userAgent.includes("Firefox")
});
}
static get isCanvasFilterSupported() {
let ctx;
if (this.isOffscreenCanvasSupported) {
ctx = new OffscreenCanvas(1, 1).getContext("2d");
} else if (typeof document !== "undefined") {
ctx = document.createElement("canvas").getContext("2d");
}
return shadow(this, "isCanvasFilterSupported", ctx?.filter !== undefined);
}
static get isAlphaColorInputSupported() {
if (typeof document === "undefined") {
return shadow(this, "isAlphaColorInputSupported", false);
}
const input = document.createElement("input");
input.type = "color";
input.setAttribute("alpha", "");
input.value = "#ff000080";
return shadow(this, "isAlphaColorInputSupported", input.value !== "#ff0000");
}
static get isBackdropFilterSupported() {
return shadow(this, "isBackdropFilterSupported", typeof CSS !== "undefined" && CSS.supports("backdrop-filter", "blur(1px)"));
}
}
class Util {
static get hexNums() {
return shadow(this, "hexNums", Array.from({
length: 256
}, (_, n) => n.toString(16).padStart(2, "0")));
}
static makeHexColor(r, g, b) {
return `#${this.hexNums[r]}${this.hexNums[g]}${this.hexNums[b]}`;
}
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 multiplyByDOMMatrix(m, md) {
return [m[0] * md.a + m[2] * md.b, m[1] * md.a + m[3] * md.b, m[0] * md.c + m[2] * md.d, m[1] * md.c + m[3] * md.d, m[0] * md.e + m[2] * md.f + m[4], m[1] * md.e + m[3] * md.f + m[5]];
}
static applyTransform(p, m, pos = 0) {
const p0 = p[pos];
const p1 = p[pos + 1];
p[pos] = p0 * m[0] + p1 * m[2] + m[4];
p[pos + 1] = p0 * m[1] + p1 * m[3] + m[5];
}
static applyTransformToBezier(p, transform, pos = 0) {
const m0 = transform[0];
const m1 = transform[1];
const m2 = transform[2];
const m3 = transform[3];
const m4 = transform[4];
const m5 = transform[5];
for (let i = 0; i < 6; i += 2) {
const pI = p[pos + i];
const pI1 = p[pos + i + 1];
p[pos + i] = pI * m0 + pI1 * m2 + m4;
p[pos + i + 1] = pI * m1 + pI1 * m3 + m5;
}
}
static applyInverseTransform(p, m) {
const p0 = p[0];
const p1 = p[1];
const d = m[0] * m[3] - m[1] * m[2];
p[0] = (p0 * m[3] - p1 * m[2] + m[2] * m[5] - m[4] * m[3]) / d;
p[1] = (-p0 * m[1] + p1 * m[0] + m[4] * m[1] - m[5] * m[0]) / d;
}
static axialAlignedBoundingBox(rect, transform, output) {
const m0 = transform[0];
const m1 = transform[1];
const m2 = transform[2];
const m3 = transform[3];
const m4 = transform[4];
const m5 = transform[5];
const r0 = rect[0];
const r1 = rect[1];
const r2 = rect[2];
const r3 = rect[3];
let a0 = m0 * r0 + m4;
let a2 = a0;
let a1 = m0 * r2 + m4;
let a3 = a1;
let b0 = m3 * r1 + m5;
let b2 = b0;
let b1 = m3 * r3 + m5;
let b3 = b1;
if (m1 !== 0 || m2 !== 0) {
const m1r0 = m1 * r0;
const m1r2 = m1 * r2;
const m2r1 = m2 * r1;
const m2r3 = m2 * r3;
a0 += m2r1;
a3 += m2r1;
a1 += m2r3;
a2 += m2r3;
b0 += m1r0;
b3 += m1r0;
b1 += m1r2;
b2 += m1r2;
}
output[0] = Math.min(output[0], a0, a1, a2, a3);
output[1] = Math.min(output[1], b0, b1, b2, b3);
output[2] = Math.max(output[2], a0, a1, a2, a3);
output[3] = Math.max(output[3], b0, b1, b2, b3);
}
static inverseTransform(m) {
const d = m[0] * m[3] - m[1] * m[2];
return [m[3] / d, -m[1] / d, -m[2] / d, m[0] / d, (m[2] * m[5] - m[4] * m[3]) / d, (m[4] * m[1] - m[5] * m[0]) / d];
}
static singularValueDecompose2dScale(matrix, output) {
const m0 = matrix[0];
const m1 = matrix[1];
const m2 = matrix[2];
const m3 = matrix[3];
const a = m0 ** 2 + m1 ** 2;
const b = m0 * m2 + m1 * m3;
const c = m2 ** 2 + m3 ** 2;
const first = (a + c) / 2;
const second = Math.sqrt(first ** 2 - (a * c - b ** 2));
output[0] = Math.sqrt(first + second || 1);
output[1] = Math.sqrt(first - second || 1);
}
static normalizeRect(rect) {
const r = rect.slice(0);
if (rect[0] > rect[2]) {
r[0] = rect[2];
r[2] = rect[0];
}
if (rect[1] > rect[3]) {
r[1] = rect[3];
r[3] = rect[1];
}
return r;
}
static intersect(rect1, rect2) {
const xLow = Math.max(Math.min(rect1[0], rect1[2]), Math.min(rect2[0], rect2[2]));
const xHigh = Math.min(Math.max(rect1[0], rect1[2]), Math.max(rect2[0], rect2[2]));
if (xLow > xHigh) {
return null;
}
const yLow = Math.max(Math.min(rect1[1], rect1[3]), Math.min(rect2[1], rect2[3]));
const yHigh = Math.min(Math.max(rect1[1], rect1[3]), Math.max(rect2[1], rect2[3]));
if (yLow > yHigh) {
return null;
}
return [xLow, yLow, xHigh, yHigh];
}
static pointBoundingBox(x, y, minMax) {
minMax[0] = Math.min(minMax[0], x);
minMax[1] = Math.min(minMax[1], y);
minMax[2] = Math.max(minMax[2], x);
minMax[3] = Math.max(minMax[3], y);
}
static rectBoundingBox(x0, y0, x1, y1, minMax) {
minMax[0] = Math.min(minMax[0], x0, x1);
minMax[1] = Math.min(minMax[1], y0, y1);
minMax[2] = Math.max(minMax[2], x0, x1);
minMax[3] = Math.max(minMax[3], y0, y1);
}
static #getExtremumOnCurve(x0, x1, x2, x3, y0, y1, y2, y3, t, minMax) {
if (t <= 0 || t >= 1) {
return;
}
const mt = 1 - t;
const tt = t * t;
const ttt = tt * t;
const x = mt * (mt * (mt * x0 + 3 * t * x1) + 3 * tt * x2) + ttt * x3;
const y = mt * (mt * (mt * y0 + 3 * t * y1) + 3 * tt * y2) + ttt * y3;
minMax[0] = Math.min(minMax[0], x);
minMax[1] = Math.min(minMax[1], y);
minMax[2] = Math.max(minMax[2], x);
minMax[3] = Math.max(minMax[3], y);
}
static #getExtremum(x0, x1, x2, x3, y0, y1, y2, y3, a, b, c, minMax) {
if (Math.abs(a) < 1e-12) {
if (Math.abs(b) >= 1e-12) {
this.#getExtremumOnCurve(x0, x1, x2, x3, y0, y1, y2, y3, -c / b, minMax);
}
return;
}
const delta = b ** 2 - 4 * c * a;
if (delta < 0) {
return;
}
const sqrtDelta = Math.sqrt(delta);
const a2 = 2 * a;
this.#getExtremumOnCurve(x0, x1, x2, x3, y0, y1, y2, y3, (-b + sqrtDelta) / a2, minMax);
this.#getExtremumOnCurve(x0, x1, x2, x3, y0, y1, y2, y3, (-b - sqrtDelta) / a2, minMax);
}
static bezierBoundingBox(x0, y0, x1, y1, x2, y2, x3, y3, minMax) {
minMax[0] = Math.min(minMax[0], x0, x3);
minMax[1] = Math.min(minMax[1], y0, y3);
minMax[2] = Math.max(minMax[2], x0, x3);
minMax[3] = Math.max(minMax[3], y0, y3);
this.#getExtremum(x0, x1, x2, x3, y0, y1, y2, y3, 3 * (-x0 + 3 * (x1 - x2) + x3), 6 * (x0 - 2 * x1 + x2), 3 * (x1 - x0), minMax);
this.#getExtremum(x0, x1, x2, x3, y0, y1, y2, y3, 3 * (-y0 + 3 * (y1 - y2) + y3), 6 * (y0 - 2 * y1 + y2), 3 * (y1 - y0), minMax);
}
}
function stringToUTF8String(str) {
return decodeURIComponent(escape(str));
}
function utf8StringToString(str) {
return unescape(encodeURIComponent(str));
}
function isArrayEqual(arr1, arr2) {
if (arr1.length !== arr2.length) {
return false;
}
for (let i = 0, ii = arr1.length; i < ii; i++) {
if (arr1[i] !== arr2[i]) {
return false;
}
}
return true;
}
let NormalizeRegex = null;
let NormalizationMap = null;
function normalizeUnicode(str) {
if (!NormalizeRegex) {
NormalizeRegex = /([\u00a0\u00b5\u037e\u0eb3\u2000-\u200a\u202f\u2126\ufb00-\ufb04\ufb06\ufb20-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufba1\ufba4-\ufba9\ufbae-\ufbb1\ufbd3-\ufbdc\ufbde-\ufbe7\ufbea-\ufbf8\ufbfc\ufbfd\ufc00-\ufc5d\ufc64-\ufcf1\ufcf5-\ufd3d\ufd88\ufdf4\ufdfa\ufdfb\ufe71\ufe77\ufe79\ufe7b\ufe7d]+)|(\ufb05+)/gu;
NormalizationMap = new Map([["ſt", "ſt"]]);
}
return str.replaceAll(NormalizeRegex, (_, p1, p2) => p1 ? p1.normalize("NFKC") : NormalizationMap.get(p2));
}
function getUuid() {
if (typeof crypto.randomUUID === "function") {
return crypto.randomUUID();
}
const buf = new Uint8Array(32);
crypto.getRandomValues(buf);
return bytesToString(buf);
}
function _isValidExplicitDest(validRef, validName, dest) {
if (!Array.isArray(dest) || dest.length < 2) {
return false;
}
const [page, zoom, ...args] = dest;
if (!validRef(page) && !Number.isInteger(page)) {
return false;
}
if (!validName(zoom)) {
return false;
}
const argsLen = args.length;
let allowNull = true;
switch (zoom.name) {
case "XYZ":
if (argsLen < 2 || argsLen > 3) {
return false;
}
break;
case "Fit":
case "FitB":
return argsLen === 0;
case "FitH":
case "FitBH":
case "FitV":
case "FitBV":
if (argsLen > 1) {
return false;
}
break;
case "FitR":
if (argsLen !== 4) {
return false;
}
allowNull = false;
break;
default:
return false;
}
for (const arg of args) {
if (typeof arg === "number" || allowNull && arg === null) {
continue;
}
return false;
}
return true;
}
const makeArr = () => [];
const makeMap = () => new Map();
const makeObj = () => Object.create(null);
const makeSet = () => new Set();
if (typeof Iterator.prototype.join !== "function") {
Iterator.prototype.join = function (separator) {
return [...this].join(separator);
};
}
;// ./external/jbig2/jbig2.js
async function JBig2(moduleArg = {}) {
var moduleRtn;
var Module = moduleArg;
var ENVIRONMENT_IS_WEB = true;
var ENVIRONMENT_IS_WORKER = false;
var arguments_ = [];
var thisProgram = "./this.program";
var quit_ = (status, toThrow) => {
throw toThrow;
};
var _scriptName = import.meta.url;
var scriptDirectory = "";
var readAsync, readBinary;
if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
try {
scriptDirectory = new URL(".", _scriptName).href;
} catch {}
readAsync = async url => {
var response = await fetch(url, {
credentials: "same-origin"
});
if (response.ok) {
return response.arrayBuffer();
}
throw new Error(response.status + " : " + response.url);
};
} else {}
var out = console.log.bind(console);
var err = console.error.bind(console);
var wasmBinary;
var ABORT = false;
var EXITSTATUS;
var readyPromiseResolve, readyPromiseReject;
var HEAP8, HEAPU8, HEAP16, HEAPU16, HEAP32, HEAPU32, HEAPF32, HEAPF64;
var HEAP64, HEAPU64;
var runtimeInitialized = false;
function updateMemoryViews() {
var b = wasmMemory.buffer;
HEAP8 = new Int8Array(b);
HEAP16 = new Int16Array(b);
HEAPU8 = new Uint8Array(b);
HEAPU16 = new Uint16Array(b);
HEAP32 = new Int32Array(b);
HEAPU32 = new Uint32Array(b);
HEAPF32 = new Float32Array(b);
HEAPF64 = new Float64Array(b);
HEAP64 = new BigInt64Array(b);
HEAPU64 = new BigUint64Array(b);
}
function preRun() {
if (Module["preRun"]) {
if (typeof Module["preRun"] == "function") Module["preRun"] = [Module["preRun"]];
while (Module["preRun"].length) {
addOnPreRun(Module["preRun"].shift());
}
}
callRuntimeCallbacks(onPreRuns);
}
function initRuntime() {
runtimeInitialized = true;
wasmExports["j"]();
}
function postRun() {
if (Module["postRun"]) {
if (typeof Module["postRun"] == "function") Module["postRun"] = [Module["postRun"]];
while (Module["postRun"].length) {
addOnPostRun(Module["postRun"].shift());
}
}
callRuntimeCallbacks(onPostRuns);
}
function abort(what) {
Module["onAbort"]?.(what);
what = "Aborted(" + what + ")";
err(what);
ABORT = true;
what += ". Build with -sASSERTIONS for more info.";
var e = new WebAssembly.RuntimeError(what);
readyPromiseReject?.(e);
throw e;
}
var wasmBinaryFile;
function getWasmImports() {
var imports = {
a: wasmImports
};
return imports;
}
async function createWasm() {
function receiveInstance(instance, module) {
wasmExports = instance.exports;
assignWasmExports(wasmExports);
updateMemoryViews();
return wasmExports;
}
var info = getWasmImports();
return new Promise((resolve, reject) => {
Module["instantiateWasm"](info, (inst, mod) => {
resolve(receiveInstance(inst, mod));
});
});
}
class ExitStatus {
name = "ExitStatus";
constructor(status) {
this.message = `Program terminated with exit(${status})`;
this.status = status;
}
}
var callRuntimeCallbacks = callbacks => {
while (callbacks.length > 0) {
callbacks.shift()(Module);
}
};
var onPostRuns = [];
var addOnPostRun = cb => onPostRuns.push(cb);
var onPreRuns = [];
var addOnPreRun = cb => onPreRuns.push(cb);
var noExitRuntime = true;
var __abort_js = () => abort("");
var runtimeKeepaliveCounter = 0;
var __emscripten_runtime_keepalive_clear = () => {
noExitRuntime = false;
runtimeKeepaliveCounter = 0;
};
var timers = {};
var handleException = e => {
if (e instanceof ExitStatus || e == "unwind") {
return EXITSTATUS;
}
quit_(1, e);
};
var keepRuntimeAlive = () => noExitRuntime || runtimeKeepaliveCounter > 0;
var _proc_exit = code => {
EXITSTATUS = code;
if (!keepRuntimeAlive()) {
Module["onExit"]?.(code);
ABORT = true;
}
quit_(code, new ExitStatus(code));
};
var exitJS = (status, implicit) => {
EXITSTATUS = status;
_proc_exit(status);
};
var _exit = exitJS;
var maybeExit = () => {
if (!keepRuntimeAlive()) {
try {
_exit(EXITSTATUS);
} catch (e) {
handleException(e);
}
}
};
var callUserCallback = func => {
if (ABORT) {
return;
}
try {
return func();
} catch (e) {
handleException(e);
} finally {
maybeExit();
}
};
var _emscripten_get_now = () => performance.now();
var __setitimer_js = (which, timeout_ms) => {
if (timers[which]) {
clearTimeout(timers[which].id);
delete timers[which];
}
if (!timeout_ms) return 0;
var id = setTimeout(() => {
delete timers[which];
callUserCallback(() => __emscripten_timeout(which, _emscripten_get_now()));
}, timeout_ms);
timers[which] = {
id,
timeout_ms
};
return 0;
};
function _createImageData(size) {
Module.imageData = new Uint8Array(size);
}
var getHeapMax = () => 2147483648;
var alignMemory = (size, alignment) => Math.ceil(size / alignment) * alignment;
var growMemory = size => {
var oldHeapSize = wasmMemory.buffer.byteLength;
var pages = (size - oldHeapSize + 65535) / 65536 | 0;
try {
wasmMemory.grow(pages);
updateMemoryViews();
return 1;
} catch (e) {}
};
var _emscripten_resize_heap = requestedSize => {
var oldSize = HEAPU8.length;
requestedSize >>>= 0;
var maxHeapSize = getHeapMax();
if (requestedSize > maxHeapSize) {
return false;
}
for (var cutDown = 1; cutDown <= 4; cutDown *= 2) {
var overGrownHeapSize = oldSize * (1 + .2 / cutDown);
overGrownHeapSize = Math.min(overGrownHeapSize, requestedSize + 100663296);
var newSize = Math.min(maxHeapSize, alignMemory(Math.max(requestedSize, overGrownHeapSize), 65536));
var replacement = growMemory(newSize);
if (replacement) {
return true;
}
}
return false;
};
function _setImageData(array_ptr, pitch8, pitch32, height) {
if (pitch32 === pitch8) {
Module.imageData = new Uint8ClampedArray(HEAPU8.subarray(array_ptr, array_ptr + pitch32 * height));
return;
}
const destSize = pitch8 * height;
const imageData = Module.imageData = new Uint8ClampedArray(destSize);
for (let srcStart = array_ptr, destStart = 0; destStart < destSize; srcStart += pitch32, destStart += pitch8) {
imageData.set(HEAPU8.subarray(srcStart, srcStart + pitch8), destStart);
}
}
function _setLineData(line_ptr, pitch8, offset) {
Module.imageData.set(HEAPU8.subarray(line_ptr, line_ptr + pitch8), offset);
}
var writeArrayToMemory = (array, buffer) => {
HEAP8.set(array, buffer);
};
if (Module["noExitRuntime"]) noExitRuntime = Module["noExitRuntime"];
if (Module["print"]) out = Module["print"];
if (Module["printErr"]) err = Module["printErr"];
if (Module["wasmBinary"]) wasmBinary = Module["wasmBinary"];
if (Module["arguments"]) arguments_ = Module["arguments"];
if (Module["thisProgram"]) thisProgram = Module["thisProgram"];
if (Module["preInit"]) {
if (typeof Module["preInit"] == "function") Module["preInit"] = [Module["preInit"]];
while (Module["preInit"].length > 0) {
Module["preInit"].shift()();
}
}
Module["writeArrayToMemory"] = writeArrayToMemory;
var _malloc, _free, _jbig2_decode, _ccitt_decode, __emscripten_timeout, memory, __indirect_function_table, wasmMemory;
function assignWasmExports(wasmExports) {
_malloc = Module["_malloc"] = wasmExports["k"];
_free = Module["_free"] = wasmExports["l"];
_jbig2_decode = Module["_jbig2_decode"] = wasmExports["m"];
_ccitt_decode = Module["_ccitt_decode"] = wasmExports["n"];
__emscripten_timeout = wasmExports["o"];
memory = wasmMemory = wasmExports["i"];
__indirect_function_table = wasmExports["__indirect_function_table"];
}
var wasmImports = {
e: __abort_js,
b: __emscripten_runtime_keepalive_clear,
c: __setitimer_js,
g: _createImageData,
d: _emscripten_resize_heap,
a: _proc_exit,
h: _setImageData,
f: _setLineData
};
function run() {
preRun();
function doRun() {
Module["calledRun"] = true;
if (ABORT) return;
initRuntime();
readyPromiseResolve?.(Module);
Module["onRuntimeInitialized"]?.();
postRun();
}
if (Module["setStatus"]) {
Module["setStatus"]("Running...");
setTimeout(() => {
setTimeout(() => Module["setStatus"](""), 1);
doRun();
}, 1);
} else {
doRun();
}
}
var wasmExports;
wasmExports = await createWasm();
run();
if (runtimeInitialized) {
moduleRtn = Module;
} else {
moduleRtn = new Promise((resolve, reject) => {
readyPromiseResolve = resolve;
readyPromiseReject = reject;
});
}
return moduleRtn;
}
/* harmony default export */ const jbig2 = (JBig2);
;// ./src/core/primitives.js
const CIRCULAR_REF = Symbol("CIRCULAR_REF");
const EOF = Symbol("EOF");
let CmdCache = Object.create(null);
let NameCache = Object.create(null);
let RefCache = Object.create(null);
function clearPrimitiveCaches() {
CmdCache = Object.create(null);
NameCache = Object.create(null);
RefCache = Object.create(null);
}
class Name {
constructor(name) {
this.name = name;
}
static get(name) {
return NameCache[name] ||= new Name(name);
}
}
class Cmd {
constructor(cmd) {
this.cmd = cmd;
}
static get(cmd) {
return CmdCache[cmd] ||= new Cmd(cmd);
}
}
const nonSerializable = () => nonSerializable;
class Dict {
__nonSerializable__ = nonSerializable;
#map = new Map();
objId = null;
suppressEncryption = false;
xref;
constructor(xref = null) {
this.xref = xref;
}
assignXref(newXref) {
this.xref = newXref;
}
get size() {
return this.#map.size;
}
#getValue(isAsync, key1, key2) {
let value = this.#map.get(key1);
if (value === undefined && key2 !== undefined) {
value = this.#map.get(key2);
}
if (value instanceof Ref && this.xref) {
return isAsync ? this.xref.fetchAsync(value, this.suppressEncryption) : this.xref.fetch(value, this.suppressEncryption);
}
return value;
}
get(key1, key2) {
return this.#getValue(false, key1, key2);
}
async getAsync(key1, key2) {
return this.#getValue(true, key1, key2);
}
getArray(key1, key2) {
let value = this.#getValue(false, key1, key2);
if (Array.isArray(value)) {
value = value.slice();
for (let i = 0, ii = value.length; i < ii; i++) {
if (value[i] instanceof Ref && this.xref) {
value[i] = this.xref.fetch(value[i], this.suppressEncryption);
}
}
}
return value;
}
getRaw(key) {
return this.#map.get(key);
}
getKeys() {
return this.#map.keys();
}
getRawValues() {
return this.#map.values();
}
getRawEntries() {
return this.#map.entries();
}
set(key, value) {
this.#map.set(key, value);
}
setIfNotExists(key, value) {
if (!this.has(key)) {
this.set(key, value);
}
}
setIfNumber(key, value) {
if (typeof value === "number") {
this.set(key, value);
}
}
setIfArray(key, value) {
if (Array.isArray(value) || ArrayBuffer.isView(value)) {
this.set(key, value);
}
}
setIfDefined(key, value) {
if (value !== undefined && value !== null) {
this.set(key, value);
}
}
setIfName(key, value) {
if (typeof value === "string") {
this.set(key, Name.get(value));
} else if (value instanceof Name) {
this.set(key, value);
}
}
setIfDict(key, value) {
if (value instanceof Dict) {
this.set(key, value);
}
}
has(key) {
return this.#map.has(key);
}
*[Symbol.iterator]() {
for (const [key, value] of this.#map) {
yield [key, value instanceof Ref && this.xref ? this.xref.fetch(value, this.suppressEncryption) : value];
}
}
static get empty() {
const emptyDict = new Dict(null);
emptyDict.set = (key, value) => {
unreachable("Should not call `set` on the empty dictionary.");
};
return shadow(this, "empty", emptyDict);
}
static merge({
xref,
dictArray,
mergeSubDicts = false
}) {
const mergedDict = new Dict(xref),
properties = new Map();
for (const dict of dictArray) {
if (!(dict instanceof Dict)) {
continue;
}
for (const [key, value] of dict.getRawEntries()) {
const property = properties.getOrInsertComputed(key, makeArr);
if (property.length && !(mergeSubDicts && value instanceof Dict)) {
continue;
}
property.push(value);
}
}
for (const [name, values] of properties) {
if (values.length === 1 || !(values[0] instanceof Dict)) {
mergedDict.set(name, values[0]);
continue;
}
const subDict = new Dict(xref);
for (const dict of values) {
for (const [key, value] of dict.getRawEntries()) {
subDict.setIfNotExists(key, value);
}
}
if (subDict.size > 0) {
mergedDict.set(name, subDict);
}
}
properties.clear();
return mergedDict.size > 0 ? mergedDict : Dict.empty;
}
clone() {
const dict = new Dict(this.xref);
for (const [key, value] of this.#map) {
dict.set(key, value);
}
return dict;
}
delete(key) {
this.#map.delete(key);
}
}
class Ref {
#str;
constructor(str, num, gen) {
this.#str = str;
this.num = num;
this.gen = gen;
}
toString() {
return this.#str;
}
static fromString(str) {
const ref = RefCache[str];
if (ref) {
return ref;
}
const m = /^(\d+)R(\d*)$/.exec(str);
if (!m || m[1] === "0") {
return null;
}
const num = parseInt(m[1], 10),
gen = !m[2] ? 0 : parseInt(m[2], 10);
return RefCache[str] = new Ref(str, num, gen);
}
static get(num, gen) {
const str = gen === 0 ? `${num}R` : `${num}R${gen}`;
return RefCache[str] ||= new Ref(str, num, gen);
}
}
class RefSet {
#set = new Set();
constructor(parent = null) {
if (parent) {
for (const refStr of parent) {
this.#set.add(refStr);
}
}
}
has(ref) {
return this.#set.has(ref.toString());
}
put(ref) {
this.#set.add(ref.toString());
}
remove(ref) {
this.#set.delete(ref.toString());
}
[Symbol.iterator]() {
return this.#set.keys();
}
clear() {
this.#set.clear();
}
}
class RefMap {
#map = new Map();
get size() {
return this.#map.size;
}
get(ref) {
return this.#map.get(ref.toString());
}
has(ref) {
return this.#map.has(ref.toString());
}
put(ref, obj) {
this.#map.set(ref.toString(), obj);
}
putAlias(ref, aliasRef) {
this.#map.set(ref.toString(), this.get(aliasRef));
}
getOrPutComputed(ref, callback) {
const map = this.#map,
refStr = ref.toString();
if (!map.has(refStr)) {
map.set(refStr, callback(ref));
}
return map.get(refStr);
}
[Symbol.iterator]() {
return this.#map.values();
}
clear() {
this.#map.clear();
}
*values() {
yield* this.#map.values();
}
*items() {
for (const [ref, value] of this.#map) {
yield [Ref.fromString(ref), value];
}
}
*keys() {
for (const ref of this.#map.keys()) {
yield Ref.fromString(ref);
}
}
}
function isName(v, name) {
return v instanceof Name && (name === undefined || v.name === name);
}
function isCmd(v, cmd) {
return v instanceof Cmd && (cmd === undefined || v.cmd === cmd);
}
function isDict(v, type) {
return v instanceof Dict && (type === undefined || isName(v.get("Type"), type));
}
function isRefsEqual(v1, v2) {
return v1.num === v2.num && v1.gen === v2.gen;
}
;// ./src/core/base_stream.js
class BaseStream {
get length() {
unreachable("Abstract getter `length` accessed");
}
get isEmpty() {
unreachable("Abstract getter `isEmpty` accessed");
}
get isDataLoaded() {
return shadow(this, "isDataLoaded", true);
}
getByte() {
unreachable("Abstract method `getByte` called");
}
getBytes(length) {
unreachable("Abstract method `getBytes` called");
}
async getImageData(length, decoderOptions) {
return this.getBytes(length, decoderOptions);
}
async asyncGetBytes() {
unreachable("Abstract method `asyncGetBytes` called");
}
get isAsync() {
return false;
}
get isAsyncDecoder() {
return false;
}
get isImageStream() {
return false;
}
get canAsyncDecodeImageFromBuffer() {
return false;
}
async getTransferableImage(width, height) {
return null;
}
peekByte() {
const peekedByte = this.getByte();
if (peekedByte !== -1) {
this.pos--;
}
return peekedByte;
}
peekBytes(length) {
const bytes = this.getBytes(length);
this.pos -= bytes.length;
return bytes;
}
getUint16() {
const b0 = this.getByte();
const b1 = this.getByte();
if (b0 === -1 || b1 === -1) {
return -1;
}
return (b0 << 8) + b1;
}
getInt32() {
const b0 = this.getByte();
const b1 = this.getByte();
const b2 = this.getByte();
const b3 = this.getByte();
return (b0 << 24) + (b1 << 16) + (b2 << 8) + b3;
}
getByteRange(begin, end) {
unreachable("Abstract method `getByteRange` called");
}
getString(length) {
return bytesToString(this.getBytes(length));
}
skip(n) {
this.pos += n || 1;
}
reset() {
unreachable("Abstract method `reset` called");
}
moveStart() {
unreachable("Abstract method `moveStart` called");
}
makeSubStream(start, length, dict = null) {
unreachable("Abstract method `makeSubStream` called");
}
clone() {
unreachable("Abstract method `clone` called");
}
getBaseStreams() {
return null;
}
getOriginalStream() {
return this.stream?.getOriginalStream() || this;
}
}
;// ./src/core/string_utils.js
/* unused harmony import specifier */ var string_utils_Util;
/* unused harmony import specifier */ var string_utils_stringToBytes;
/* unused harmony import specifier */ var string_utils_warn;
function isAscii(str) {
return typeof str === "string" && (!str || /^[\x00-\x7F]*$/.test(str));
}
function stringToAsciiOrUTF16BE(str) {
return str === null || str === undefined || isAscii(str) ? str : stringToUTF16String(str, true);
}
function stringToUTF16HexString(str) {
const buf = [];
for (let i = 0, ii = str.length; i < ii; i++) {
const char = str.charCodeAt(i);
buf.push(string_utils_Util.hexNums[char >> 8 & 0xff], string_utils_Util.hexNums[char & 0xff]);
}
return buf.join("");
}
function stringToUTF16String(str, bigEndian = false) {
const buf = [];
if (bigEndian) {
buf.push("\xFE\xFF");
}
for (let i = 0, ii = str.length; i < ii; i++) {
const char = str.charCodeAt(i);
buf.push(String.fromCharCode(char >> 8 & 0xff), String.fromCharCode(char & 0xff));
}
return buf.join("");
}
const PDFStringTranslateTable = (/* unused pure expression or super */ null && ([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]));
const PDFStringTextDecoders = Object.create(null);
function stringToPDFString(str, keepEscapeSequence = false) {
if (str[0] >= "\xEF") {
let encoding;
if (str[0] === "\xFE" && str[1] === "\xFF") {
encoding = "utf-16be";
if (str.length % 2 === 1) {
str = str.slice(0, -1);
}
} else if (str[0] === "\xFF" && str[1] === "\xFE") {
encoding = "utf-16le";
if (str.length % 2 === 1) {
str = str.slice(0, -1);
}
} else if (str[0] === "\xEF" && str[1] === "\xBB" && str[2] === "\xBF") {
encoding = "utf-8";
}
if (encoding) {
try {
const decoder = PDFStringTextDecoders[encoding] ??= new TextDecoder(encoding, {
fatal: true
});
const buffer = string_utils_stringToBytes(str);
const decoded = decoder.decode(buffer);
if (keepEscapeSequence || !decoded.includes("\x1b")) {
return decoded;
}
return decoded.replaceAll(/\x1b[^\x1b]*(?:\x1b|$)/g, "");
} catch (ex) {
string_utils_warn(`stringToPDFString: "${ex}".`);
}
}
}
const strBuf = [];
for (let i = 0, ii = str.length; i < ii; i++) {
const charCode = str.charCodeAt(i);
if (!keepEscapeSequence && charCode === 0x1b) {
while (++i < ii && str.charCodeAt(i) !== 0x1b) {}
continue;
}
const code = PDFStringTranslateTable[charCode];
strBuf.push(code ? String.fromCharCode(code) : str.charAt(i));
}
return strBuf.join("");
}
;// ./src/core/core_utils.js
/* unused harmony import specifier */ var core_utils_assert;
/* unused harmony import specifier */ var core_utils_Util;
/* unused harmony import specifier */ var core_utils_warn;
/* unused harmony import specifier */ var core_utils_AnnotationEditorPrefix;
/* unused harmony import specifier */ var core_utils_makeArr;
/* unused harmony import specifier */ var core_utils_RefSet;
/* unused harmony import specifier */ var core_utils_Dict;
/* unused harmony import specifier */ var core_utils_Ref;
/* unused harmony import specifier */ var core_utils_isRefsEqual;
/* unused harmony import specifier */ var core_utils_Name;
/* unused harmony import specifier */ var core_utils_isName;
/* unused harmony import specifier */ var core_utils_BaseStream;
/* unused harmony import specifier */ var CONTROL_CHAR_REGEXP;
/* unused harmony import specifier */ var core_utils_stringToPDFString;
const PDF_VERSION_REGEXP = /^[1-9]\.\d$/;
const MAX_INT_32 = (/* unused pure expression or super */ null && (2 ** 31 - 1));
const IDENTITY_MATRIX = (/* unused pure expression or super */ null && ([1, 0, 0, 1, 0, 0]));
const RESOURCES_KEYS_OPERATOR_LIST = (/* unused pure expression or super */ null && (["ColorSpace", "ExtGState", "Font", "Pattern", "Properties", "Shading", "XObject"]));
const RESOURCES_KEYS_TEXT_CONTENT = (/* unused pure expression or super */ null && (["ExtGState", "Font", "Properties", "XObject"]));
function getLookupTableFactory(initializer, useArray = false) {
let lookup;
return function () {
if (initializer) {
lookup = useArray ? [] : Object.create(null);
initializer(lookup);
initializer = null;
}
return lookup;
};
}
class MissingDataException extends BaseException {
constructor(begin, end) {
super(`Missing data [${begin}, ${end})`, "MissingDataException");
this.begin = begin;
this.end = end;
}
}
class ParserEOFException extends BaseException {
constructor(msg) {
super(msg, "ParserEOFException");
}
}
class XRefEntryException extends BaseException {
constructor(msg) {
super(msg, "XRefEntryException");
}
}
class XRefParseException extends BaseException {
constructor(msg) {
super(msg, "XRefParseException");
}
}
function arrayBuffersToBytes(arr) {
const length = arr.length;
if (length === 0) {
return new Uint8Array(0);
}
if (length === 1) {
return new Uint8Array(arr[0]);
}
let dataLength = 0;
for (let i = 0; i < length; i++) {
dataLength += arr[i].byteLength;
}
const data = new Uint8Array(dataLength);
let pos = 0;
for (let i = 0; i < length; i++) {
const item = new Uint8Array(arr[i]);
data.set(item, pos);
pos += item.byteLength;
}
return data;
}
async function fetchBinaryData(url) {
const response = await fetch(url);
if (!response.ok) {
throw new Error(`Failed to fetch file "${url}" with "${response.statusText}".`);
}
return response.bytes();
}
function getInheritableProperty({
dict,
key,
getArray = false,
stopWhenFound = true
}) {
let values;
const visited = new core_utils_RefSet();
while (dict instanceof core_utils_Dict && !(dict.objId && visited.has(dict.objId))) {
if (dict.objId) {
visited.put(dict.objId);
}
const value = getArray ? dict.getArray(key) : dict.get(key);
if (value !== undefined) {
if (stopWhenFound) {
return value;
}
(values ||= []).push(value);
}
dict = dict.get("Parent");
}
return values;
}
function getParentToUpdate(dict, ref, xref) {
const visited = new core_utils_RefSet();
const firstDict = dict;
const result = {
dict: null,
ref: null
};
while (dict instanceof core_utils_Dict && !visited.has(ref)) {
visited.put(ref);
if (dict.has("T")) {
break;
}
ref = dict.getRaw("Parent");
if (!(ref instanceof core_utils_Ref)) {
return result;
}
dict = xref.fetch(ref);
}
if (dict instanceof core_utils_Dict && dict !== firstDict) {
result.dict = dict;
result.ref = ref;
}
return result;
}
function deepCompare(a, b) {
if (a === b) {
return true;
}
if (a instanceof core_utils_Ref && b instanceof core_utils_Ref) {
return core_utils_isRefsEqual(a, b);
}
if (a instanceof core_utils_Name && b instanceof core_utils_Name) {
return a.name === b.name;
}
if (a instanceof core_utils_Dict && b instanceof core_utils_Dict) {
if (a.size !== b.size) {
return false;
}
for (const [key, value1] of a.getRawEntries()) {
const value2 = b.getRaw(key);
if (value2 === undefined || !deepCompare(value1, value2)) {
return false;
}
}
return true;
}
if (Array.isArray(a) && Array.isArray(b)) {
if (a.length !== b.length) {
return false;
}
for (let i = 0, ii = a.length; i < ii; i++) {
if (!deepCompare(a[i], b[i])) {
return false;
}
}
return true;
}
return false;
}
const ROMAN_NUMBER_MAP = (/* unused pure expression or super */ null && (["", "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) {
core_utils_assert(Number.isInteger(number) && number > 0, "The number should be a positive integer.");
const roman = "M".repeat(number / 1000 | 0) + ROMAN_NUMBER_MAP[number % 1000 / 100 | 0] + ROMAN_NUMBER_MAP[10 + (number % 100 / 10 | 0)] + ROMAN_NUMBER_MAP[20 + number % 10];
return lowerCase ? roman.toLowerCase() : roman;
}
function isWhiteSpace(ch) {
return ch === 0x20 || ch === 0x09 || ch === 0x0d || ch === 0x0a;
}
function isBooleanArray(arr, len) {
return Array.isArray(arr) && (len === null || arr.length === len) && arr.every(x => typeof x === "boolean");
}
function isNumberArray(arr, len) {
if (Array.isArray(arr)) {
return (len === null || arr.length === len) && arr.every(x => typeof x === "number");
}
return ArrayBuffer.isView(arr) && !(arr instanceof BigInt64Array || arr instanceof BigUint64Array) && (len === null || arr.length === len);
}
function lookupMatrix(arr, fallback) {
return isNumberArray(arr, 6) ? arr : fallback;
}
function lookupRect(arr, fallback) {
return isNumberArray(arr, 4) ? arr : fallback;
}
function lookupNormalRect(arr, fallback) {
return isNumberArray(arr, 4) ? core_utils_Util.normalizeRect(arr) : fallback;
}
function parseXFAPath(path) {
const positionPattern = /^(.+)\[(\d+)\]$/;
return path.split(".").map(component => {
const m = component.match(positionPattern);
if (m) {
return {
name: m[1],
pos: parseInt(m[2], 10)
};
}
return {
name: component,
pos: 0
};
});
}
function escapePDFName(str) {
const buffer = [];
let start = 0;
for (let i = 0, ii = str.length; i < ii; i++) {
const char = str.charCodeAt(i);
if (char < 0x21 || char > 0x7e || char === 0x23 || char === 0x28 || char === 0x29 || char === 0x3c || char === 0x3e || char === 0x5b || char === 0x5d || char === 0x7b || char === 0x7d || char === 0x2f || char === 0x25) {
if (start < i) {
buffer.push(str.substring(start, i));
}
buffer.push(`#${char.toString(16).padStart(2, "0")}`);
start = i + 1;
}
}
if (buffer.length === 0) {
return str;
}
if (start < str.length) {
buffer.push(str.substring(start));
}
return buffer.join("");
}
function escapeString(str) {
return str.replaceAll(/([()\\\n\r])/g, match => {
if (match === "\n") {
return "\\n";
} else if (match === "\r") {
return "\\r";
}
return `\\${match}`;
});
}
function _collectJS(entry, xref, list, parents) {
if (!entry) {
return;
}
let parent = null;
if (entry instanceof core_utils_Ref) {
if (parents.has(entry)) {
return;
}
parent = entry;
parents.put(parent);
entry = xref.fetch(entry);
}
if (Array.isArray(entry)) {
for (const element of entry) {
_collectJS(element, xref, list, parents);
}
} else if (entry instanceof core_utils_Dict) {
if (core_utils_isName(entry.get("S"), "JavaScript")) {
const js = entry.get("JS");
let code;
if (js instanceof core_utils_BaseStream) {
code = js.getString();
} else if (typeof js === "string") {
code = js;
}
code &&= core_utils_stringToPDFString(code, true).replaceAll("\x00", "");
if (code) {
list.push(code.trim());
}
}
_collectJS(entry.getRaw("Next"), xref, list, parents);
}
if (parent) {
parents.remove(parent);
}
}
function collectActions(xref, dict, eventType) {
const actions = new Map();
const additionalActionsDicts = getInheritableProperty({
dict,
key: "AA",
stopWhenFound: false
});
if (additionalActionsDicts) {
for (let i = additionalActionsDicts.length - 1; i >= 0; i--) {
const additionalActions = additionalActionsDicts[i];
if (!(additionalActions instanceof core_utils_Dict)) {
continue;
}
for (const [key, rawActionDict] of additionalActions.getRawEntries()) {
const action = eventType[key];
if (!action) {
continue;
}
const parents = new core_utils_RefSet();
const list = [];
_collectJS(rawActionDict, xref, list, parents);
if (list.length > 0) {
actions.set(action, list);
}
}
}
}
if (dict.has("A")) {
const actionDict = dict.get("A");
const parents = new core_utils_RefSet();
const list = [];
_collectJS(actionDict, xref, list, parents);
if (list.length > 0) {
actions.set("Action", list);
}
}
return actions.size ? actions : null;
}
const XMLEntities = (/* unused pure expression or super */ null && ({
0x3c: "<",
0x3e: ">",
0x26: "&",
0x22: """,
0x27: "'"
}));
function* codePointIter(str) {
for (let i = 0, ii = str.length; i < ii; i++) {
const char = str.codePointAt(i);
if (char > 0xd7ff && (char < 0xe000 || char > 0xfffd)) {
i++;
}
yield char;
}
}
function encodeToXmlString(str) {
const buffer = [];
let start = 0;
for (let i = 0, ii = str.length; i < ii; i++) {
const char = str.codePointAt(i);
if (0x20 <= char && char <= 0x7e) {
const entity = XMLEntities[char];
if (entity) {
if (start < i) {
buffer.push(str.substring(start, i));
}
buffer.push(entity);
start = i + 1;
}
} else {
if (start < i) {
buffer.push(str.substring(start, i));
}
buffer.push(`&#x${char.toString(16).toUpperCase()};`);
if (char > 0xffff) {
i++;
}
start = i + 1;
}
}
if (buffer.length === 0) {
return str;
}
if (start < str.length) {
buffer.push(str.substring(start));
}
return buffer.join("");
}
function validateFontName(fontFamily, mustWarn = false) {
const m = /^("|').*("|')$/.exec(fontFamily);
if (m && m[1] === m[2]) {
const re = new RegExp(`[^\\\\]${m[1]}`);
if (re.test(fontFamily.slice(1, -1))) {
if (mustWarn) {
core_utils_warn(`FontFamily contains unescaped ${m[1]}: ${fontFamily}.`);
}
return false;
}
if (CONTROL_CHAR_REGEXP.test(fontFamily)) {
if (mustWarn) {
core_utils_warn(`FontFamily contains control characters: ${fontFamily}.`);
}
return false;
}
} else {
for (const ident of fontFamily.split(/[ \t]+/)) {
if (/^(?:\d|-[\d-])/.test(ident) || !/^[\w\\-]+$/.test(ident)) {
if (mustWarn) {
core_utils_warn(`FontFamily contains invalid <custom-ident>: ${fontFamily}.`);
}
return false;
}
}
}
return true;
}
function normalizeCSSFontFamily(fontFamily) {
return fontFamily.replaceAll(/( +)(\d)?/g, (_, spaces, digit) => digit ?? " ");
}
function validateCSSFont(cssFontInfo) {
const DEFAULT_CSS_FONT_OBLIQUE = "14";
const DEFAULT_CSS_FONT_WEIGHT = "400";
const CSS_FONT_WEIGHT_VALUES = new Set(["100", "200", "300", "400", "500", "600", "700", "800", "900", "1000", "normal", "bold", "bolder", "lighter"]);
const {
fontFamily,
fontWeight,
italicAngle
} = cssFontInfo;
if (!validateFontName(fontFamily, true)) {
return false;
}
const weight = fontWeight ? fontWeight.toString() : "";
cssFontInfo.fontWeight = CSS_FONT_WEIGHT_VALUES.has(weight) ? weight : DEFAULT_CSS_FONT_WEIGHT;
const angle = parseFloat(italicAngle);
cssFontInfo.italicAngle = isNaN(angle) || angle < -90 || angle > 90 ? DEFAULT_CSS_FONT_OBLIQUE : italicAngle.toString();
return true;
}
function recoverJsURL(str) {
const URL_OPEN_METHODS = ["app.launchURL", "window.open", "xfa.host.gotoURL"];
const regex = new RegExp("^\\s*(" + URL_OPEN_METHODS.join("|").replaceAll(".", "\\.") + ")\\((?:'|\")([^'\"]*)(?:'|\")(?:,\\s*(\\w+)\\)|\\))", "i");
const jsUrl = regex.exec(str);
if (jsUrl?.[2]) {
return {
url: jsUrl[2],
newWindow: jsUrl[1] === "app.launchURL" && jsUrl[3] === "true"
};
}
return null;
}
function numberToString(value) {
if (Number.isInteger(value)) {
return value.toString();
}
const roundedValue = Math.round(value * 100);
if (roundedValue % 100 === 0) {
return (roundedValue / 100).toString();
}
if (roundedValue % 10 === 0) {
return value.toFixed(1);
}
return value.toFixed(2);
}
function getNewAnnotationsMap(annotationStorage) {
if (!annotationStorage) {
return null;
}
const newAnnotationsByPage = new Map();
for (const [key, value] of annotationStorage) {
if (!key.startsWith(core_utils_AnnotationEditorPrefix)) {
continue;
}
newAnnotationsByPage.getOrInsertComputed(value.pageIndex, core_utils_makeArr).push(value);
}
return newAnnotationsByPage.size > 0 ? newAnnotationsByPage : null;
}
function getModificationDate(date = new Date()) {
if (!(date instanceof Date)) {
date = new Date(date);
}
const buffer = [date.getUTCFullYear().toString(), (date.getUTCMonth() + 1).toString().padStart(2, "0"), date.getUTCDate().toString().padStart(2, "0"), date.getUTCHours().toString().padStart(2, "0"), date.getUTCMinutes().toString().padStart(2, "0"), date.getUTCSeconds().toString().padStart(2, "0")];
return buffer.join("");
}
function getRotationMatrix(rotation, width, height) {
switch (rotation) {
case 90:
return [0, 1, -1, 0, width, 0];
case 180:
return [-1, 0, 0, -1, width, height];
case 270:
return [0, -1, 1, 0, 0, height];
default:
throw new Error("Invalid rotation");
}
}
function getSizeInBytes(x) {
return Math.ceil(Math.ceil(Math.log2(1 + x)) / 8);
}
;// ./src/core/wasm_image.js
class WasmImage {
static #handler = null;
static #instances = new Set();
static #useWasm = true;
static #useWorkerFetch = true;
static #wasmUrl = null;
#buffer = null;
#modulePromise = null;
_filename = null;
_noWasmFilename = null;
static setOptions({
handler,
useWasm,
useWorkerFetch,
wasmUrl
}) {
WasmImage.#useWasm = useWasm;
WasmImage.#useWorkerFetch = useWorkerFetch;
WasmImage.#wasmUrl = wasmUrl;
if (!useWorkerFetch) {
WasmImage.#handler = handler;
}
}
static get instance() {
unreachable("Abstract getter `instance` accessed");
}
static cleanup() {
for (const instance of WasmImage.#instances) {
instance.#modulePromise = null;
}
}
constructor(trackInstance = false) {
if (trackInstance) {
WasmImage.#instances.add(this);
}
}
async #getJsModule(fallbackCallback) {
let instance = null;
try {
const mod = await import(
/*webpackIgnore: true*/
/*@vite-ignore*/
`${WasmImage.#wasmUrl}${this._noWasmFilename}`);
instance = mod.default();
} catch (ex) {
warn(`#getJsModule: ${ex}`);
}
fallbackCallback(instance);
}
async #instantiateWasm(fallbackCallback, imports, successCallback) {
try {
if (!this.#buffer) {
if (WasmImage.#useWorkerFetch) {
this.#buffer = await fetchBinaryData(`${WasmImage.#wasmUrl}${this._filename}`);
} else {
this.#buffer = await WasmImage.#handler.sendWithPromise("FetchBinaryData", {
kind: "wasmUrl",
filename: this._filename
});
}
}
const results = await WebAssembly.instantiate(this.#buffer, imports);
return successCallback(results.instance);
} catch (ex) {
warn(`#instantiateWasm: ${ex}`);
this.#getJsModule(fallbackCallback);
return null;
}
}
_getModule(ImageDecoder) {
if (!this.#modulePromise) {
const {
promise,
resolve
} = Promise.withResolvers();
const promises = [promise];
if (!WasmImage.#useWasm) {
this.#getJsModule(resolve);
} else {
promises.push(ImageDecoder({
warn: warn,
instantiateWasm: this.#instantiateWasm.bind(this, resolve)
}));
}
this.#modulePromise = Promise.race(promises);
}
return this.#modulePromise;
}
async decode(bytes, _params) {
unreachable("Abstract method `decode` called");
}
}
;// ./src/core/jbig2_ccittFax.js
class Jbig2Error extends BaseException {
constructor(msg) {
super(msg, "Jbig2Error");
}
}
class JBig2CCITTFaxImage extends WasmImage {
_filename = "jbig2.wasm";
_noWasmFilename = "jbig2_nowasm_fallback.js";
static get instance() {
return shadow(this, "instance", new JBig2CCITTFaxImage(true));
}
async decode(bytes, width, height, globals, CCITTOptions) {
const module = await this._getModule(jbig2);
if (!module) {
throw new Jbig2Error("JBig2 failed to initialize");
}
let ptr, globalsPtr;
try {
const size = bytes.length;
ptr = module._malloc(size);
module.writeArrayToMemory(bytes, ptr);
if (CCITTOptions) {
module._ccitt_decode(ptr, size, width, height, CCITTOptions.K, CCITTOptions.EndOfLine ? 1 : 0, CCITTOptions.EncodedByteAlign ? 1 : 0, CCITTOptions.BlackIs1 ? 1 : 0, CCITTOptions.Columns, CCITTOptions.Rows);
} else {
const globalsSize = globals ? globals.length : 0;
if (globalsSize > 0) {
globalsPtr = module._malloc(globalsSize);
module.writeArrayToMemory(globals, globalsPtr);
}
module._jbig2_decode(ptr, size, width, height, globalsPtr, globalsSize);
}
if (!module.imageData) {
throw new Jbig2Error("Unknown error");
}
const {
imageData
} = module;
module.imageData = null;
return imageData;
} finally {
if (ptr) {
module._free(ptr);
}
if (globalsPtr) {
module._free(globalsPtr);
}
}
}
}
;// ./src/shared/math_clamp.js
function MathClamp(v, min, max) {
return Math.min(Math.max(v, min), max);
}
;// ./src/core/colorspace.js
function resizeRgbImage(src, dest, w1, h1, w2, h2, alpha01) {
const COMPONENTS = 3;
alpha01 = alpha01 !== 1 ? 0 : alpha01;
const xRatio = w1 / w2;
const yRatio = h1 / h2;
let newIndex = 0,
oldIndex;
const xScaled = new Uint16Array(w2);
const w1Scanline = w1 * COMPONENTS;
for (let i = 0; i < w2; i++) {
xScaled[i] = Math.floor(i * xRatio) * COMPONENTS;
}
for (let i = 0; i < h2; i++) {
const py = Math.floor(i * yRatio) * w1Scanline;
for (let j = 0; j < w2; j++) {
oldIndex = py + xScaled[j];
dest[newIndex++] = src[oldIndex++];
dest[newIndex++] = src[oldIndex++];
dest[newIndex++] = src[oldIndex++];
newIndex += alpha01;
}
}
}
function resizeRgbaImage(src, dest, w1, h1, w2, h2, alpha01) {
const xRatio = w1 / w2;
const yRatio = h1 / h2;
let newIndex = 0;
const xScaled = new Uint16Array(w2);
if (alpha01 === 1) {
for (let i = 0; i < w2; i++) {
xScaled[i] = Math.floor(i * xRatio);
}
const src32 = new Uint32Array(src.buffer);
const dest32 = new Uint32Array(dest.buffer);
const rgbMask = FeatureTest.isLittleEndian ? 0x00ffffff : 0xffffff00;
for (let i = 0; i < h2; i++) {
const buf = src32.subarray(Math.floor(i * yRatio) * w1);
for (let j = 0; j < w2; j++) {
dest32[newIndex++] |= buf[xScaled[j]] & rgbMask;
}
}
} else {
const COMPONENTS = 4;
const w1Scanline = w1 * COMPONENTS;
for (let i = 0; i < w2; i++) {
xScaled[i] = Math.floor(i * xRatio) * COMPONENTS;
}
for (let i = 0; i < h2; i++) {
const buf = src.subarray(Math.floor(i * yRatio) * w1Scanline);
for (let j = 0; j < w2; j++) {
const oldIndex = xScaled[j];
dest[newIndex++] = buf[oldIndex];
dest[newIndex++] = buf[oldIndex + 1];
dest[newIndex++] = buf[oldIndex + 2];
}
}
}
}
function copyRgbaImage(src, dest, alpha01) {
if (alpha01 === 1) {
const src32 = new Uint32Array(src.buffer);
const dest32 = new Uint32Array(dest.buffer);
const rgbMask = FeatureTest.isLittleEndian ? 0x00ffffff : 0xffffff00;
for (let i = 0, ii = src32.length; i < ii; i++) {
dest32[i] |= src32[i] & rgbMask;
}
} else {
let j = 0;
for (let i = 0, ii = src.length; i < ii; i += 4) {
dest[j++] = src[i];
dest[j++] = src[i + 1];
dest[j++] = src[i + 2];
}
}
}
function isDefaultDecodeHelper(decode, expectedLen) {
if (!Array.isArray(decode)) {
return true;
}
const decodeLen = decode.length;
if (decodeLen < expectedLen) {
warn("Decode map length is too short.");
return true;
}
if (decodeLen > expectedLen) {
info("Truncating too long decode map.");
decode.length = expectedLen;
}
return false;
}
class ColorSpace {
static #rgbBuf = new Uint8ClampedArray(3);
constructor(name, numComps) {
this.name = name;
this.numComps = numComps;
}
getRgb(src, srcOffset, output = new Uint8ClampedArray(3)) {
this.getRgbItem(src, srcOffset, output, 0);
return output;
}
getRgbHex(src, srcOffset) {
const buffer = this.getRgb(src, srcOffset, ColorSpace.#rgbBuf);
return Util.makeHexColor(buffer[0], buffer[1], buffer[2]);
}
getRgbItem(src, srcOffset, dest, destOffset) {
unreachable("Should not call ColorSpace.getRgbItem");
}
getRgbBuffer(src, srcOffset, count, dest, destOffset, bits, alpha01) {
unreachable("Should not call ColorSpace.getRgbBuffer");
}
getRgbItems(src, count, dest, destOffset, alpha01) {
const {
numComps
} = this;
for (let i = 0, srcOffset = 0; i < count; i++, srcOffset += numComps) {
this.getRgbItem(src, srcOffset, dest, destOffset);
destOffset += 3 + alpha01;
}
}
isPassthrough(bits) {
return false;
}
isDefaultDecode(decode, bpc) {
return ColorSpace.isDefaultDecode(decode, this.numComps);
}
fillRgb(dest, originalWidth, originalHeight, width, height, actualHeight, bpc, comps, alpha01) {
const count = originalWidth * originalHeight;
let rgbBuf = null;
const numComponentColors = 1 << bpc;
const needsResizing = originalHeight !== height || originalWidth !== width;
if (this.isPassthrough(bpc)) {
rgbBuf = comps;
} else if (this.numComps === 1 && count > numComponentColors && this.name !== "DeviceGray" && this.name !== "DeviceRGB") {
const allColors = bpc <= 8 ? new Uint8Array(numComponentColors) : new Uint16Array(numComponentColors);
for (let i = 0; i < numComponentColors; i++) {
allColors[i] = i;
}
const colorMap = new Uint8ClampedArray(numComponentColors * 3);
this.getRgbBuffer(allColors, 0, numComponentColors, colorMap, 0, bpc, 0);
if (!needsResizing) {
let destPos = 0;
for (let i = 0; i < count; ++i) {
const key = comps[i] * 3;
dest[destPos++] = colorMap[key];
dest[destPos++] = colorMap[key + 1];
dest[destPos++] = colorMap[key + 2];
destPos += alpha01;
}
} else {
rgbBuf = new Uint8Array(count * 3);
let rgbPos = 0;
for (let i = 0; i < count; ++i) {
const key = comps[i] * 3;
rgbBuf[rgbPos++] = colorMap[key];
rgbBuf[rgbPos++] = colorMap[key + 1];
rgbBuf[rgbPos++] = colorMap[key + 2];
}
}
} else if (!needsResizing) {
this.getRgbBuffer(comps, 0, width * actualHeight, dest, 0, bpc, alpha01);
} else {
rgbBuf = new Uint8ClampedArray(count * 3);
this.getRgbBuffer(comps, 0, count, rgbBuf, 0, bpc, 0);
}
if (rgbBuf) {
if (needsResizing) {
resizeRgbImage(rgbBuf, dest, originalWidth, originalHeight, width, height, alpha01);
} else {
let destPos = 0,
rgbPos = 0;
for (let i = 0, ii = width * actualHeight; i < ii; i++) {
dest[destPos++] = rgbBuf[rgbPos++];
dest[destPos++] = rgbBuf[rgbPos++];
dest[destPos++] = rgbBuf[rgbPos++];
destPos += alpha01;
}
}
}
}
get usesZeroToOneRange() {
return shadow(this, "usesZeroToOneRange", true);
}
static isDefaultDecode(decode, numComps) {
if (isDefaultDecodeHelper(decode, numComps * 2)) {
return true;
}
for (let i = 0, ii = decode.length; i < ii; i += 2) {
if (decode[i] !== 0 || decode[i + 1] !== 1) {
return false;
}
}
return true;
}
}
class AlternateCS extends ColorSpace {
constructor(numComps, base, tintFn) {
super("Alternate", numComps);
this.base = base;
this.tintFn = tintFn;
this.tmpBuf = new Float32Array(base.numComps);
}
getRgbItem(src, srcOffset, dest, destOffset) {
const tmpBuf = this.tmpBuf;
this.tintFn(src, srcOffset, tmpBuf, 0);
this.base.getRgbItem(tmpBuf, 0, dest, destOffset);
}
getRgbItems(src, count, dest, destOffset, alpha01) {
const {
base,
numComps,
tintFn
} = this;
const baseNumComps = base.numComps;
const tinted = new Float32Array(count * baseNumComps);
for (let i = 0, srcOffset = 0, tintedOffset = 0; i < count; i++) {
tintFn(src, srcOffset, tinted, tintedOffset);
srcOffset += numComps;
tintedOffset += baseNumComps;
}
base.getRgbItems(tinted, count, dest, destOffset, alpha01);
}
getRgbBuffer(src, srcOffset, count, dest, destOffset, bits, alpha01) {
const tintFn = this.tintFn;
const base = this.base;
const scale = 1 / ((1 << bits) - 1);
const baseNumComps = base.numComps;
const usesZeroToOneRange = base.usesZeroToOneRange;
const isPassthrough = (base.isPassthrough(8) || !usesZeroToOneRange) && alpha01 === 0;
let pos = isPassthrough ? destOffset : 0;
const baseBuf = isPassthrough ? dest : new Uint8ClampedArray(baseNumComps * count);
const numComps = this.numComps;
const scaled = new Float32Array(numComps);
const tinted = new Float32Array(baseNumComps);
let i, j;
for (i = 0; i < count; i++) {
for (j = 0; j < numComps; j++) {
scaled[j] = src[srcOffset++] * scale;
}
tintFn(scaled, 0, tinted, 0);
if (usesZeroToOneRange) {
for (j = 0; j < baseNumComps; j++) {
baseBuf[pos++] = tinted[j] * 255;
}
} else {
base.getRgbItem(tinted, 0, baseBuf, pos);
pos += baseNumComps;
}
}
if (!isPassthrough) {
base.getRgbBuffer(baseBuf, 0, count, dest, destOffset, 8, alpha01);
}
}
}
class PatternCS extends ColorSpace {
constructor(baseCS) {
super("Pattern", null);
this.base = baseCS;
}
isDefaultDecode(decode, bpc) {
unreachable("Should not call PatternCS.isDefaultDecode");
}
}
class IndexedCS extends ColorSpace {
#rgbLookup;
constructor(base, highVal, lookup) {
super("Indexed", 1);
this.highVal = highVal;
const count = highVal + 1;
const length = base.numComps * count;
const palette = new Uint8Array(length);
if (lookup instanceof BaseStream) {
palette.set(lookup.getBytes(length));
} else if (typeof lookup === "string") {
for (let i = 0; i < length; ++i) {
palette[i] = lookup.charCodeAt(i);
}
} else {
throw new FormatError(`IndexedCS - unrecognized lookup table: ${lookup}`);
}
this.#rgbLookup = new Uint8ClampedArray(count * 3);
base.getRgbBuffer(palette, 0, count, this.#rgbLookup, 0, 8, 0);
}
getRgbItem(src, srcOffset, dest, destOffset) {
const rgbLookup = this.#rgbLookup;
const pos = MathClamp(Math.round(src[srcOffset]), 0, this.highVal) * 3;
dest[destOffset] = rgbLookup[pos];
dest[destOffset + 1] = rgbLookup[pos + 1];
dest[destOffset + 2] = rgbLookup[pos + 2];
}
getRgbBuffer(src, srcOffset, count, dest, destOffset, bits, alpha01) {
const {
highVal
} = this;
const rgbLookup = this.#rgbLookup;
for (let i = 0; i < count; ++i) {
const pos = MathClamp(Math.round(src[srcOffset++]), 0, highVal) * 3;
dest[destOffset++] = rgbLookup[pos];
dest[destOffset++] = rgbLookup[pos + 1];
dest[destOffset++] = rgbLookup[pos + 2];
destOffset += alpha01;
}
}
isDefaultDecode(decode, bpc) {
if (isDefaultDecodeHelper(decode, 2)) {
return true;
}
if (!Number.isInteger(bpc) || bpc < 1) {
warn("Bits per component is not correct");
return true;
}
return decode[0] === 0 && decode[1] === (1 << bpc) - 1;
}
}
class DeviceGrayCS extends ColorSpace {
constructor() {
super("DeviceGray", 1);
}
getRgbItem(src, srcOffset, dest, destOffset) {
const c = src[srcOffset] * 255;
dest[destOffset] = dest[destOffset + 1] = dest[destOffset + 2] = c;
}
getRgbBuffer(src, srcOffset, count, dest, destOffset, bits, alpha01) {
const scale = 255 / ((1 << bits) - 1);
let j = srcOffset,
q = destOffset;
for (let i = 0; i < count; ++i) {
const c = scale * src[j++];
dest[q++] = c;
dest[q++] = c;
dest[q++] = c;
q += alpha01;
}
}
}
class DeviceRgbCS extends ColorSpace {
constructor() {
super("DeviceRGB", 3);
}
getRgbItem(src, srcOffset, dest, destOffset) {
dest[destOffset] = src[srcOffset] * 255;
dest[destOffset + 1] = src[srcOffset + 1] * 255;
dest[destOffset + 2] = src[srcOffset + 2] * 255;
}
getRgbBuffer(src, srcOffset, count, dest, destOffset, bits, alpha01) {
if (bits === 8 && alpha01 === 0) {
dest.set(src.subarray(srcOffset, srcOffset + count * 3), destOffset);
return;
}
const scale = 255 / ((1 << bits) - 1);
let j = srcOffset,
q = destOffset;
for (let i = 0; i < count; ++i) {
dest[q++] = scale * src[j++];
dest[q++] = scale * src[j++];
dest[q++] = scale * src[j++];
q += alpha01;
}
}
isPassthrough(bits) {
return bits === 8;
}
}
class DeviceRgbaCS extends ColorSpace {
constructor() {
super("DeviceRGBA", 4);
}
isPassthrough(bits) {
return bits === 8;
}
fillRgb(dest, originalWidth, originalHeight, width, height, actualHeight, bpc, comps, alpha01) {
if (originalHeight !== height || originalWidth !== width) {
resizeRgbaImage(comps, dest, originalWidth, originalHeight, width, height, alpha01);
} else {
copyRgbaImage(comps, dest, alpha01);
}
}
}
class DeviceCmykCS extends ColorSpace {
constructor() {
super("DeviceCMYK", 4);
}
#toRgb(src, srcOffset, srcScale, dest, destOffset) {
const c = src[srcOffset] * srcScale;
const m = src[srcOffset + 1] * srcScale;
const y = src[srcOffset + 2] * srcScale;
const k = src[srcOffset + 3] * srcScale;
dest[destOffset] = 255 + c * (-4.387332384609988 * c + 54.48615194189176 * m + 18.82290502165302 * y + 212.25662451639585 * k + -285.2331026137004) + m * (1.7149763477362134 * m - 5.6096736904047315 * y + -17.873870861415444 * k - 5.497006427196366) + y * (-2.5217340131683033 * y - 21.248923337353073 * k + 17.5119270841813) + k * (-21.86122147463605 * k - 189.48180835922747);
dest[destOffset + 1] = 255 + c * (8.841041422036149 * c + 60.118027045597366 * m + 6.871425592049007 * y + 31.159100130055922 * k + -79.2970844816548) + m * (-15.310361306967817 * m + 17.575251261109482 * y + 131.35250912493976 * k - 190.9453302588951) + y * (4.444339102852739 * y + 9.8632861493405 * k - 24.86741582555878) + k * (-20.737325471181034 * k - 187.80453709719578);
dest[destOffset + 2] = 255 + c * (0.8842522430003296 * c + 8.078677503112928 * m + 30.89978309703729 * y - 0.23883238689178934 * k + -14.183576799673286) + m * (10.49593273432072 * m + 63.02378494754052 * y + 50.606957656360734 * k - 112.23884253719248) + y * (0.03296041114873217 * y + 115.60384449646641 * k + -193.58209356861505) + k * (-22.33816807309886 * k - 180.12613974708367);
}
getRgbItem(src, srcOffset, dest, destOffset) {
this.#toRgb(src, srcOffset, 1, dest, destOffset);
}
getRgbBuffer(src, srcOffset, count, dest, destOffset, bits, alpha01) {
const scale = 1 / ((1 << bits) - 1);
for (let i = 0; i < count; i++) {
this.#toRgb(src, srcOffset, scale, dest, destOffset);
srcOffset += 4;
destOffset += 3 + alpha01;
}
}
}
class CalGrayCS extends ColorSpace {
constructor(whitePoint, blackPoint, gamma) {
super("CalGray", 1);
if (!whitePoint) {
throw new FormatError("WhitePoint missing - required for color space CalGray");
}
[this.XW, this.YW, this.ZW] = whitePoint;
[this.XB, this.YB, this.ZB] = blackPoint || [0, 0, 0];
this.G = gamma || 1;
if (this.XW < 0 || this.ZW < 0 || this.YW !== 1) {
throw new FormatError(`Invalid WhitePoint components for ${this.name}, no fallback available`);
}
if (this.XB < 0 || this.YB < 0 || this.ZB < 0) {
info(`Invalid BlackPoint for ${this.name}, falling back to default.`);
this.XB = this.YB = this.ZB = 0;
}
if (this.XB !== 0 || this.YB !== 0 || this.ZB !== 0) {
warn(`${this.name}, BlackPoint: XB: ${this.XB}, YB: ${this.YB}, ` + `ZB: ${this.ZB}, only default values are supported.`);
}
if (this.G < 1) {
info(`Invalid Gamma: ${this.G} for ${this.name}, falling back to default.`);
this.G = 1;
}
}
#toRgb(src, srcOffset, dest, destOffset, scale) {
const A = src[srcOffset] * scale;
const AG = A ** this.G;
const L = this.YW * AG;
const val = Math.max(295.8 * L ** 0.3333333333333333 - 40.8, 0);
dest[destOffset] = val;
dest[destOffset + 1] = val;
dest[destOffset + 2] = val;
}
getRgbItem(src, srcOffset, dest, destOffset) {
this.#toRgb(src, srcOffset, dest, destOffset, 1);
}
getRgbBuffer(src, srcOffset, count, dest, destOffset, bits, alpha01) {
const scale = 1 / ((1 << bits) - 1);
for (let i = 0; i < count; ++i) {
this.#toRgb(src, srcOffset, dest, destOffset, scale);
srcOffset += 1;
destOffset += 3 + alpha01;
}
}
}
class CalRGBCS extends ColorSpace {
static #BRADFORD_SCALE_MATRIX = new Float32Array([0.8951, 0.2664, -0.1614, -0.7502, 1.7135, 0.0367, 0.0389, -0.0685, 1.0296]);
static #BRADFORD_SCALE_INVERSE_MATRIX = new Float32Array([0.9869929, -0.1470543, 0.1599627, 0.4323053, 0.5183603, 0.0492912, -0.0085287, 0.0400428, 0.9684867]);
static #SRGB_D65_XYZ_TO_RGB_MATRIX = new Float32Array([3.2404542, -1.5371385, -0.4985314, -0.9692660, 1.8760108, 0.0415560, 0.0556434, -0.2040259, 1.0572252]);
static #FLAT_WHITEPOINT_MATRIX = new Float32Array([1, 1, 1]);
static #tempNormalizeMatrix = new Float32Array(3);
static #tempConvertMatrix1 = new Float32Array(3);
static #tempConvertMatrix2 = new Float32Array(3);
static #DECODE_L_CONSTANT = ((8 + 16) / 116) ** 3 / 8.0;
constructor(whitePoint, blackPoint, gamma, matrix) {
super("CalRGB", 3);
if (!whitePoint) {
throw new FormatError("WhitePoint missing - required for color space CalRGB");
}
const [XW, YW, ZW] = this.whitePoint = whitePoint;
const [XB, YB, ZB] = this.blackPoint = blackPoint || new Float32Array(3);
[this.GR, this.GG, this.GB] = gamma || new Float32Array([1, 1, 1]);
[this.MXA, this.MYA, this.MZA, this.MXB, this.MYB, this.MZB, this.MXC, this.MYC, this.MZC] = matrix || new Float32Array([1, 0, 0, 0, 1, 0, 0, 0, 1]);
if (XW < 0 || ZW < 0 || YW !== 1) {
throw new FormatError(`Invalid WhitePoint components for ${this.name}, no fallback available`);
}
if (XB < 0 || YB < 0 || ZB < 0) {
info(`Invalid BlackPoint for ${this.name} [${XB}, ${YB}, ${ZB}], ` + "falling back to default.");
this.blackPoint = new Float32Array(3);
}
if (this.GR < 0 || this.GG < 0 || this.GB < 0) {
info(`Invalid Gamma [${this.GR}, ${this.GG}, ${this.GB}] for ` + `${this.name}, falling back to default.`);
this.GR = this.GG = this.GB = 1;
}
}
#matrixProduct(a, b, result) {
result[0] = a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
result[1] = a[3] * b[0] + a[4] * b[1] + a[5] * b[2];
result[2] = a[6] * b[0] + a[7] * b[1] + a[8] * b[2];
}
#toFlat(sourceWhitePoint, LMS, result) {
result[0] = LMS[0] * 1 / sourceWhitePoint[0];
result[1] = LMS[1] * 1 / sourceWhitePoint[1];
result[2] = LMS[2] * 1 / sourceWhitePoint[2];
}
#toD65(sourceWhitePoint, LMS, result) {
const D65X = 0.95047;
const D65Y = 1;
const D65Z = 1.08883;
result[0] = LMS[0] * D65X / sourceWhitePoint[0];
result[1] = LMS[1] * D65Y / sourceWhitePoint[1];
result[2] = LMS[2] * D65Z / sourceWhitePoint[2];
}
#sRGBTransferFunction(color) {
if (color <= 0.0031308) {
return MathClamp(12.92 * color, 0, 1);
}
if (color >= 0.99554525) {
return 1;
}
return MathClamp((1 + 0.055) * color ** (1 / 2.4) - 0.055, 0, 1);
}
#decodeL(L) {
if (L < 0) {
return -this.#decodeL(-L);
}
if (L > 8.0) {
return ((L + 16) / 116) ** 3;
}
return L * CalRGBCS.#DECODE_L_CONSTANT;
}
#compensateBlackPoint(sourceBlackPoint, XYZ_Flat, result) {
if (sourceBlackPoint[0] === 0 && sourceBlackPoint[1] === 0 && sourceBlackPoint[2] === 0) {
result[0] = XYZ_Flat[0];
result[1] = XYZ_Flat[1];
result[2] = XYZ_Flat[2];
return;
}
const zeroDecodeL = this.#decodeL(0);
const X_DST = zeroDecodeL;
const X_SRC = this.#decodeL(sourceBlackPoint[0]);
const Y_DST = zeroDecodeL;
const Y_SRC = this.#decodeL(sourceBlackPoint[1]);
const Z_DST = zeroDecodeL;
const Z_SRC = this.#decodeL(sourceBlackPoint[2]);
const X_Scale = (1 - X_DST) / (1 - X_SRC);
const X_Offset = 1 - X_Scale;
const Y_Scale = (1 - Y_DST) / (1 - Y_SRC);
const Y_Offset = 1 - Y_Scale;
const Z_Scale = (1 - Z_DST) / (1 - Z_SRC);
const Z_Offset = 1 - Z_Scale;
result[0] = XYZ_Flat[0] * X_Scale + X_Offset;
result[1] = XYZ_Flat[1] * Y_Scale + Y_Offset;
result[2] = XYZ_Flat[2] * Z_Scale + Z_Offset;
}
#normalizeWhitePointToFlat(sourceWhitePoint, XYZ_In, result) {
if (sourceWhitePoint[0] === 1 && sourceWhitePoint[2] === 1) {
result[0] = XYZ_In[0];
result[1] = XYZ_In[1];
result[2] = XYZ_In[2];
return;
}
const LMS = result;
this.#matrixProduct(CalRGBCS.#BRADFORD_SCALE_MATRIX, XYZ_In, LMS);
const LMS_Flat = CalRGBCS.#tempNormalizeMatrix;
this.#toFlat(sourceWhitePoint, LMS, LMS_Flat);
this.#matrixProduct(CalRGBCS.#BRADFORD_SCALE_INVERSE_MATRIX, LMS_Flat, result);
}
#normalizeWhitePointToD65(sourceWhitePoint, XYZ_In, result) {
const LMS = result;
this.#matrixProduct(CalRGBCS.#BRADFORD_SCALE_MATRIX, XYZ_In, LMS);
const LMS_D65 = CalRGBCS.#tempNormalizeMatrix;
this.#toD65(sourceWhitePoint, LMS, LMS_D65);
this.#matrixProduct(CalRGBCS.#BRADFORD_SCALE_INVERSE_MATRIX, LMS_D65, result);
}
#toRgb(src, srcOffset, dest, destOffset, scale) {
const A = MathClamp(src[srcOffset] * scale, 0, 1);
const B = MathClamp(src[srcOffset + 1] * scale, 0, 1);
const C = MathClamp(src[srcOffset + 2] * scale, 0, 1);
const AGR = A === 1 ? 1 : A ** this.GR;
const BGG = B === 1 ? 1 : B ** this.GG;
const CGB = C === 1 ? 1 : C ** this.GB;
const X = this.MXA * AGR + this.MXB * BGG + this.MXC * CGB;
const Y = this.MYA * AGR + this.MYB * BGG + this.MYC * CGB;
const Z = this.MZA * AGR + this.MZB * BGG + this.MZC * CGB;
const XYZ = CalRGBCS.#tempConvertMatrix1;
XYZ[0] = X;
XYZ[1] = Y;
XYZ[2] = Z;
const XYZ_Flat = CalRGBCS.#tempConvertMatrix2;
this.#normalizeWhitePointToFlat(this.whitePoint, XYZ, XYZ_Flat);
const XYZ_Black = CalRGBCS.#tempConvertMatrix1;
this.#compensateBlackPoint(this.blackPoint, XYZ_Flat, XYZ_Black);
const XYZ_D65 = CalRGBCS.#tempConvertMatrix2;
this.#normalizeWhitePointToD65(CalRGBCS.#FLAT_WHITEPOINT_MATRIX, XYZ_Black, XYZ_D65);
const SRGB = CalRGBCS.#tempConvertMatrix1;
this.#matrixProduct(CalRGBCS.#SRGB_D65_XYZ_TO_RGB_MATRIX, XYZ_D65, SRGB);
dest[destOffset] = this.#sRGBTransferFunction(SRGB[0]) * 255;
dest[destOffset + 1] = this.#sRGBTransferFunction(SRGB[1]) * 255;
dest[destOffset + 2] = this.#sRGBTransferFunction(SRGB[2]) * 255;
}
getRgbItem(src, srcOffset, dest, destOffset) {
this.#toRgb(src, srcOffset, dest, destOffset, 1);
}
getRgbBuffer(src, srcOffset, count, dest, destOffset, bits, alpha01) {
const scale = 1 / ((1 << bits) - 1);
for (let i = 0; i < count; ++i) {
this.#toRgb(src, srcOffset, dest, destOffset, scale);
srcOffset += 3;
destOffset += 3 + alpha01;
}
}
}
class LabCS extends ColorSpace {
constructor(whitePoint, blackPoint, range) {
super("Lab", 3);
if (!whitePoint) {
throw new FormatError("WhitePoint missing - required for color space Lab");
}
[this.XW, this.YW, this.ZW] = whitePoint;
[this.amin, this.amax, this.bmin, this.bmax] = range || [-100, 100, -100, 100];
[this.XB, this.YB, this.ZB] = blackPoint || [0, 0, 0];
if (this.XW < 0 || this.ZW < 0 || this.YW !== 1) {
throw new FormatError("Invalid WhitePoint components, no fallback available");
}
if (this.XB < 0 || this.YB < 0 || this.ZB < 0) {
info("Invalid BlackPoint, falling back to default");
this.XB = this.YB = this.ZB = 0;
}
if (this.amin > this.amax || this.bmin > this.bmax) {
info("Invalid Range, falling back to defaults");
this.amin = -100;
this.amax = 100;
this.bmin = -100;
this.bmax = 100;
}
}
#fn_g(x) {
return x >= 6 / 29 ? x ** 3 : 108 / 841 * (x - 4 / 29);
}
#decode(value, high1, low2, high2) {
return low2 + value * (high2 - low2) / high1;
}
#toRgb(src, srcOffset, maxVal, dest, destOffset) {
let Ls = src[srcOffset];
let as = src[srcOffset + 1];
let bs = src[srcOffset + 2];
if (maxVal !== false) {
Ls = this.#decode(Ls, maxVal, 0, 100);
as = this.#decode(as, maxVal, this.amin, this.amax);
bs = this.#decode(bs, maxVal, this.bmin, this.bmax);
}
if (as > this.amax) {
as = this.amax;
} else if (as < this.amin) {
as = this.amin;
}
if (bs > this.bmax) {
bs = this.bmax;
} else if (bs < this.bmin) {
bs = this.bmin;
}
const M = (Ls + 16) / 116;
const L = M + as / 500;
const N = M - bs / 200;
const X = this.XW * this.#fn_g(L);
const Y = this.YW * this.#fn_g(M);
const Z = this.ZW * this.#fn_g(N);
let r, g, b;
if (this.ZW < 1) {
r = X * 3.1339 + Y * -1.617 + Z * -0.4906;
g = X * -0.9785 + Y * 1.916 + Z * 0.0333;
b = X * 0.072 + Y * -0.229 + Z * 1.4057;
} else {
r = X * 3.2406 + Y * -1.5372 + Z * -0.4986;
g = X * -0.9689 + Y * 1.8758 + Z * 0.0415;
b = X * 0.0557 + Y * -0.204 + Z * 1.057;
}
dest[destOffset] = Math.sqrt(r) * 255;
dest[destOffset + 1] = Math.sqrt(g) * 255;
dest[destOffset + 2] = Math.sqrt(b) * 255;
}
getRgbItem(src, srcOffset, dest, destOffset) {
this.#toRgb(src, srcOffset, false, dest, destOffset);
}
getRgbBuffer(src, srcOffset, count, dest, destOffset, bits, alpha01) {
const maxVal = (1 << bits) - 1;
for (let i = 0; i < count; i++) {
this.#toRgb(src, srcOffset, maxVal, dest, destOffset);
srcOffset += 3;
destOffset += 3 + alpha01;
}
}
isDefaultDecode(decode, bpc) {
return true;
}
get usesZeroToOneRange() {
return shadow(this, "usesZeroToOneRange", false);
}
}
;// ./external/qcms/qcms_utils.js
const ALPHA_MASK = new Uint8Array(new Uint32Array([1]).buffer)[0] === 1 ? 0xff000000 : 0x000000ff;
const RGB_MASK = ~ALPHA_MASK;
class QCMS {
static #memoryArray = null;
static _memory = null;
static _destBuffer = null;
static _destOffset = 0;
static _keepAlpha = false;
static get _memoryArray() {
const array = this.#memoryArray;
if (array?.byteLength) {
return array;
}
return this.#memoryArray = new Uint8Array(this._memory.buffer);
}
}
function copy_result(ptr, len) {
const {
_destBuffer,
_destOffset,
_keepAlpha,
_memoryArray
} = QCMS;
if (!_keepAlpha) {
_destBuffer.set(_memoryArray.subarray(ptr, ptr + len), _destOffset);
return;
}
const count = len >> 2;
const destStart = _destBuffer.byteOffset + _destOffset;
if (((destStart | ptr) & 3) === 0) {
const dest32 = new Uint32Array(_destBuffer.buffer, destStart, count);
const src32 = new Uint32Array(QCMS._memory.buffer, ptr, count);
for (let i = 0; i < count; i++) {
dest32[i] = dest32[i] & ALPHA_MASK | src32[i] & RGB_MASK;
}
return;
}
for (let i = ptr, ii = ptr + len, j = _destOffset; i < ii; i += 4, j += 4) {
_destBuffer[j] = _memoryArray[i];
_destBuffer[j + 1] = _memoryArray[i + 1];
_destBuffer[j + 2] = _memoryArray[i + 2];
}
}
;// ./external/qcms/qcms.js
const DataType = Object.freeze({
RGB8: 0,
"0": "RGB8",
RGBA8: 1,
"1": "RGBA8",
BGRA8: 2,
"2": "BGRA8",
Gray8: 3,
"3": "Gray8",
GrayA8: 4,
"4": "GrayA8",
CMYK: 5,
"5": "CMYK"
});
const Intent = Object.freeze({
Perceptual: 0,
"0": "Perceptual",
RelativeColorimetric: 1,
"1": "RelativeColorimetric",
Saturation: 2,
"2": "Saturation",
AbsoluteColorimetric: 3,
"3": "AbsoluteColorimetric"
});
function qcms_convert_array(transformer, src, add_alpha) {
const ptr0 = passArray8ToWasm0(src, wasm.__wbindgen_malloc);
const len0 = WASM_VECTOR_LEN;
wasm.qcms_convert_array(transformer, ptr0, len0, add_alpha);
}
function qcms_convert_four(transformer, src1, src2, src3, src4) {
const ret = wasm.qcms_convert_four(transformer, src1, src2, src3, src4);
return ret >>> 0;
}
function qcms_convert_one(transformer, src) {
const ret = wasm.qcms_convert_one(transformer, src);
return ret >>> 0;
}
function qcms_convert_three(transformer, src1, src2, src3) {
const ret = wasm.qcms_convert_three(transformer, src1, src2, src3);
return ret >>> 0;
}
function qcms_drop_transformer(transformer) {
wasm.qcms_drop_transformer(transformer);
}
function qcms_transformer_from_memory(mem, in_type, intent) {
const ptr0 = passArray8ToWasm0(mem, wasm.__wbindgen_malloc);
const len0 = WASM_VECTOR_LEN;
const ret = wasm.qcms_transformer_from_memory(ptr0, len0, in_type, intent);
return ret >>> 0;
}
function __wbg_get_imports() {
const import0 = {
__proto__: null,
__wbg___wbindgen_throw_344f42d3211c4765: function (arg0, arg1) {
throw new Error(getStringFromWasm0(arg0, arg1));
},
__wbg_copy_result_0d15f3bf9d9012ae: function (arg0, arg1) {
copy_result(arg0 >>> 0, arg1 >>> 0);
},
__wbindgen_init_externref_table: function () {
const table = wasm.__wbindgen_externrefs;
const offset = table.grow(4);
table.set(0, undefined);
table.set(offset + 0, undefined);
table.set(offset + 1, null);
table.set(offset + 2, true);
table.set(offset + 3, false);
}
};
return {
__proto__: null,
"./qcms_bg.js": import0
};
}
function getStringFromWasm0(ptr, len) {
return decodeText(ptr >>> 0, len);
}
let cachedUint8ArrayMemory0 = null;
function getUint8ArrayMemory0() {
if (cachedUint8ArrayMemory0 === null || cachedUint8ArrayMemory0.byteLength === 0) {
cachedUint8ArrayMemory0 = new Uint8Array(wasm.memory.buffer);
}
return cachedUint8ArrayMemory0;
}
function passArray8ToWasm0(arg, malloc) {
const ptr = malloc(arg.length * 1, 1) >>> 0;
getUint8ArrayMemory0().set(arg, ptr / 1);
WASM_VECTOR_LEN = arg.length;
return ptr;
}
let cachedTextDecoder = new TextDecoder('utf-8', {
ignoreBOM: true,
fatal: true
});
cachedTextDecoder.decode();
const MAX_SAFARI_DECODE_BYTES = 2146435072;
let numBytesDecoded = 0;
function decodeText(ptr, len) {
numBytesDecoded += len;
if (numBytesDecoded >= MAX_SAFARI_DECODE_BYTES) {
cachedTextDecoder = new TextDecoder('utf-8', {
ignoreBOM: true,
fatal: true
});
cachedTextDecoder.decode();
numBytesDecoded = len;
}
return cachedTextDecoder.decode(getUint8ArrayMemory0().subarray(ptr, ptr + len));
}
let WASM_VECTOR_LEN = 0;
let wasmModule, wasmInstance, wasm;
function __wbg_finalize_init(instance, module) {
wasmInstance = instance;
wasm = instance.exports;
wasmModule = module;
cachedUint8ArrayMemory0 = null;
wasm.__wbindgen_start();
return wasm;
}
async function __wbg_load(module, imports) {
if (typeof Response === 'function' && module instanceof Response) {
if (typeof WebAssembly.instantiateStreaming === 'function') {
try {
return await WebAssembly.instantiateStreaming(module, imports);
} catch (e) {
const validResponse = module.ok && expectedResponseType(module.type);
if (validResponse && module.headers.get('Content-Type') !== 'application/wasm') {
console.warn("`WebAssembly.instantiateStreaming` failed because your server does not serve Wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error:\n", e);
} else {
throw e;
}
}
}
const bytes = await module.arrayBuffer();
return await WebAssembly.instantiate(bytes, imports);
} else {
const instance = await WebAssembly.instantiate(module, imports);
if (instance instanceof WebAssembly.Instance) {
return {
instance,
module
};
} else {
return instance;
}
}
function expectedResponseType(type) {
switch (type) {
case 'basic':
case 'cors':
case 'default':
return true;
}
return false;
}
}
function initSync(module) {
if (wasm !== undefined) return wasm;
if (module !== undefined) {
if (Object.getPrototypeOf(module) === Object.prototype) {
({
module
} = module);
} else {
console.warn('using deprecated parameters for `initSync()`; pass a single object instead');
}
}
const imports = __wbg_get_imports();
if (!(module instanceof WebAssembly.Module)) {
module = new WebAssembly.Module(module);
}
const instance = new WebAssembly.Instance(module, imports);
return __wbg_finalize_init(instance, module);
}
async function __wbg_init(module_or_path) {
if (wasm !== undefined) return wasm;
if (module_or_path !== undefined) {
if (Object.getPrototypeOf(module_or_path) === Object.prototype) {
({
module_or_path
} = module_or_path);
} else {
console.warn('using deprecated parameters for the initialization function; pass a single object instead');
}
}
const imports = __wbg_get_imports();
if (typeof module_or_path === 'string' || typeof Request === 'function' && module_or_path instanceof Request || typeof URL === 'function' && module_or_path instanceof URL) {
module_or_path = fetch(module_or_path);
}
const {
instance,
module
} = await __wbg_load(await module_or_path, imports);
return __wbg_finalize_init(instance, module);
}
;// ./src/core/icc_colorspace.js
function fetchSync(url) {
const xhr = new XMLHttpRequest();
xhr.open("GET", url, false);
xhr.responseType = "arraybuffer";
xhr.send(null);
return xhr.response;
}
class IccColorSpace extends ColorSpace {
#transformer;
#convertPixel;
static #useWasm = true;
static #wasmUrl = null;
static #finalizer = null;
constructor(iccProfile, name, numComps) {
if (!IccColorSpace.isUsable) {
throw new Error("No ICC color space support");
}
super(name, numComps);
let inType;
switch (numComps) {
case 1:
inType = DataType.Gray8;
this.#convertPixel = (src, srcOffset) => qcms_convert_one(this.#transformer, src[srcOffset] * 255);
break;
case 3:
inType = DataType.RGB8;
this.#convertPixel = (src, srcOffset) => qcms_convert_three(this.#transformer, src[srcOffset] * 255, src[srcOffset + 1] * 255, src[srcOffset + 2] * 255);
break;
case 4:
inType = DataType.CMYK;
this.#convertPixel = (src, srcOffset) => qcms_convert_four(this.#transformer, src[srcOffset] * 255, src[srcOffset + 1] * 255, src[srcOffset + 2] * 255, src[srcOffset + 3] * 255);
break;
default:
throw new Error(`Unsupported number of components: ${numComps}`);
}
this.#transformer = qcms_transformer_from_memory(iccProfile, inType, Intent.Perceptual);
if (!this.#transformer) {
throw new Error("Failed to create ICC color space");
}
IccColorSpace.#finalizer ||= new FinalizationRegistry(transformer => {
qcms_drop_transformer(transformer);
});
IccColorSpace.#finalizer.register(this, this.#transformer);
}
getRgbHex(src, srcOffset) {
const color = this.#convertPixel(src, srcOffset);
return Util.makeHexColor(color >> 16, color >> 8 & 0xff, color & 0xff);
}
getRgbItem(src, srcOffset, dest, destOffset) {
const color = this.#convertPixel(src, srcOffset);
dest[destOffset] = color >> 16;
dest[destOffset + 1] = color >> 8 & 0xff;
dest[destOffset + 2] = color & 0xff;
}
getRgbItems(src, count, dest, destOffset, alpha01) {
const {
numComps
} = this;
const length = count * numComps;
const scaled = new Uint8Array(length);
for (let i = 0; i < length; i++) {
scaled[i] = src[i] * 255;
}
QCMS._destBuffer = dest;
QCMS._destOffset = destOffset;
QCMS._keepAlpha = alpha01 === 1;
qcms_convert_array(this.#transformer, scaled, alpha01 === 1);
QCMS._destBuffer = null;
}
getRgbBuffer(src, srcOffset, count, dest, destOffset, bits, alpha01) {
src = src.subarray(srcOffset, srcOffset + count * this.numComps);
if (bits !== 8) {
const scale = 255 / ((1 << bits) - 1);
for (let i = 0, ii = src.length; i < ii; i++) {
src[i] *= scale;
}
}
QCMS._destBuffer = dest;
QCMS._destOffset = destOffset;
QCMS._keepAlpha = alpha01 === 1 && dest.buffer !== src.buffer;
qcms_convert_array(this.#transformer, src, alpha01 === 1);
QCMS._destBuffer = null;
}
static setOptions({
useWasm,
useWorkerFetch,
wasmUrl
}) {
if (!useWorkerFetch) {
this.#useWasm = false;
return;
}
this.#useWasm = useWasm;
this.#wasmUrl = wasmUrl;
}
static get isUsable() {
let isUsable = false;
if (this.#useWasm) {
if (this.#wasmUrl) {
try {
this._module = initSync({
module: fetchSync(`${this.#wasmUrl}qcms_bg.wasm`)
});
isUsable = !!this._module;
QCMS._memory = this._module.memory;
} catch (e) {
warn(`ICCBased color space: "${e}".`);
}
} else {
warn("No ICC color space support due to missing `wasmUrl` API option");
}
}
return shadow(this, "isUsable", isUsable);
}
}
class CmykICCBasedCS extends IccColorSpace {
static #iccUrl;
constructor() {
const iccProfile = new Uint8Array(fetchSync(`${CmykICCBasedCS.#iccUrl}CGATS001Compat-v2-micro.icc`));
super(iccProfile, "DeviceCMYK", 4);
}
static setOptions({
iccUrl
}) {
this.#iccUrl = iccUrl;
}
static get isUsable() {
let isUsable = false;
if (IccColorSpace.isUsable) {
if (this.#iccUrl) {
isUsable = true;
} else {
warn("No CMYK ICC profile support due to missing `iccUrl` API option");
}
}
return shadow(this, "isUsable", isUsable);
}
}
;// ./src/core/colorspace_utils.js
class ColorSpaceUtils {
static parse({
cs,
xref,
resources = null,
pdfFunctionFactory,
globalColorSpaceCache,
localColorSpaceCache,
asyncIfNotCached = false
}) {
const options = {
xref,
resources,
pdfFunctionFactory,
globalColorSpaceCache,
localColorSpaceCache
};
let csName, csRef, parsedCS;
if (cs instanceof Ref) {
csRef = cs;
const cachedCS = globalColorSpaceCache.getByRef(csRef) || localColorSpaceCache.getByRef(csRef);
if (cachedCS) {
return cachedCS;
}
cs = xref.fetch(cs);
}
if (cs instanceof Name) {
csName = cs.name;
const cachedCS = localColorSpaceCache.getByName(csName);
if (cachedCS) {
return cachedCS;
}
}
try {
parsedCS = this.#parse(cs, options);
} catch (ex) {
if (asyncIfNotCached && !(ex instanceof MissingDataException)) {
return Promise.reject(ex);
}
throw ex;
}
if (csName || csRef) {
localColorSpaceCache.set(csName, csRef, parsedCS);
if (csRef) {
globalColorSpaceCache.set(null, csRef, parsedCS);
}
}
return asyncIfNotCached ? Promise.resolve(parsedCS) : parsedCS;
}
static #subParse(cs, options) {
const {
globalColorSpaceCache
} = options;
let csRef;
if (cs instanceof Ref) {
csRef = cs;
const cachedCS = globalColorSpaceCache.getByRef(csRef);
if (cachedCS) {
return cachedCS;
}
}
const parsedCS = this.#parse(cs, options);
if (csRef) {
globalColorSpaceCache.set(null, csRef, parsedCS);
}
return parsedCS;
}
static #parse(cs, options) {
const {
xref,
resources,
pdfFunctionFactory,
globalColorSpaceCache
} = options;
cs = xref.fetchIfRef(cs);
if (cs instanceof Name) {
switch (cs.name) {
case "G":
case "DeviceGray":
return this.gray;
case "RGB":
case "DeviceRGB":
return this.rgb;
case "DeviceRGBA":
return this.rgba;
case "CMYK":
case "DeviceCMYK":
return this.cmyk;
case "Pattern":
return new PatternCS(null);
default:
if (resources instanceof Dict) {
const colorSpaces = resources.get("ColorSpace");
if (colorSpaces instanceof Dict) {
const resourcesCS = colorSpaces.get(cs.name);
if (resourcesCS) {
if (resourcesCS instanceof Name) {
return this.#parse(resourcesCS, options);
}
cs = resourcesCS;
break;
}
}
}
warn(`Unrecognized ColorSpace: ${cs.name}`);
return this.gray;
}
}
if (Array.isArray(cs)) {
const mode = xref.fetchIfRef(cs[0]).name;
let params, numComps, baseCS, whitePoint, blackPoint, gamma;
switch (mode) {
case "G":
case "DeviceGray":
return this.gray;
case "RGB":
case "DeviceRGB":
return this.rgb;
case "CMYK":
case "DeviceCMYK":
return this.cmyk;
case "CalGray":
params = xref.fetchIfRef(cs[1]);
whitePoint = params.getArray("WhitePoint");
blackPoint = params.getArray("BlackPoint");
gamma = params.get("Gamma");
return new CalGrayCS(whitePoint, blackPoint, gamma);
case "CalRGB":
params = xref.fetchIfRef(cs[1]);
whitePoint = params.getArray("WhitePoint");
blackPoint = params.getArray("BlackPoint");
gamma = params.getArray("Gamma");
const matrix = params.getArray("Matrix");
return new CalRGBCS(whitePoint, blackPoint, gamma, matrix);
case "ICCBased":
const isRef = cs[1] instanceof Ref;
if (isRef) {
const cachedCS = globalColorSpaceCache.getByRef(cs[1]);
if (cachedCS) {
return cachedCS;
}
}
const stream = xref.fetchIfRef(cs[1]);
const dict = stream.dict;
numComps = dict.get("N");
if (IccColorSpace.isUsable) {
try {
const iccCS = new IccColorSpace(stream.getBytes(), "ICCBased", numComps);
if (isRef) {
globalColorSpaceCache.set(null, cs[1], iccCS);
}
return iccCS;
} catch (ex) {
if (ex instanceof MissingDataException) {
throw ex;
}
warn(`ICCBased color space (${cs[1]}): "${ex}".`);
}
}
const altRaw = dict.getRaw("Alternate");
if (altRaw) {
const altCS = this.#subParse(altRaw, options);
if (altCS.numComps === numComps) {
return altCS;
}
warn("ICCBased color space: Ignoring incorrect /Alternate entry.");
}
if (numComps === 1) {
return this.gray;
} else if (numComps === 3) {
return this.rgb;
} else if (numComps === 4) {
return this.cmyk;
}
break;
case "Pattern":
baseCS = cs[1] || null;
baseCS &&= this.#subParse(baseCS, options);
return new PatternCS(baseCS);
case "I":
case "Indexed":
baseCS = this.#subParse(cs[1], options);
const hiVal = MathClamp(xref.fetchIfRef(cs[2]), 0, 255);
const lookup = xref.fetchIfRef(cs[3]);
return new IndexedCS(baseCS, hiVal, lookup);
case "Separation":
case "DeviceN":
const name = xref.fetchIfRef(cs[1]);
numComps = Array.isArray(name) ? name.length : 1;
baseCS = this.#subParse(cs[2], options);
const tintFn = pdfFunctionFactory.create(cs[3]);
return new AlternateCS(numComps, baseCS, tintFn);
case "Lab":
params = xref.fetchIfRef(cs[1]);
whitePoint = params.getArray("WhitePoint");
blackPoint = params.getArray("BlackPoint");
const range = params.getArray("Range");
return new LabCS(whitePoint, blackPoint, range);
default:
warn(`Unimplemented ColorSpace object: ${mode}`);
return this.gray;
}
}
warn(`Unrecognized ColorSpace object: ${cs}`);
return this.gray;
}
static get gray() {
return shadow(this, "gray", new DeviceGrayCS());
}
static get rgb() {
return shadow(this, "rgb", new DeviceRgbCS());
}
static get rgba() {
return shadow(this, "rgba", new DeviceRgbaCS());
}
static get cmyk() {
if (CmykICCBasedCS.isUsable) {
try {
return shadow(this, "cmyk", new CmykICCBasedCS());
} catch {
warn("CMYK fallback: DeviceCMYK");
}
}
return shadow(this, "cmyk", new DeviceCmykCS());
}
}
;// ./src/shared/image_utils.js
/* unused harmony import specifier */ var image_utils_ImageKind;
/* unused harmony import specifier */ var image_utils_FeatureTest;
function convertToRGBA(params) {
switch (params.kind) {
case image_utils_ImageKind.GRAYSCALE_1BPP:
return convertBlackAndWhiteToRGBA(params);
case image_utils_ImageKind.RGB_24BPP:
return convertRGBToRGBA(params);
}
return null;
}
function convertBlackAndWhiteToRGBA({
src,
srcPos = 0,
dest,
width,
height,
nonBlackColor = 0xffffffff,
inverseDecode = false
}) {
const black = image_utils_FeatureTest.isLittleEndian ? 0xff000000 : 0x000000ff;
const [zeroMapping, oneMapping] = inverseDecode ? [nonBlackColor, black] : [black, nonBlackColor];
const widthInSource = width >> 3;
const widthRemainder = width & 7;
const xorMask = zeroMapping ^ oneMapping;
const srcLength = src.length;
dest = new Uint32Array(dest.buffer);
let destPos = 0;
for (let i = 0; i < height; ++i) {
for (const max = srcPos + widthInSource; srcPos < max; ++srcPos, destPos += 8) {
const elem = src[srcPos];
dest[destPos] = zeroMapping ^ -(elem >> 7 & 1) & xorMask;
dest[destPos + 1] = zeroMapping ^ -(elem >> 6 & 1) & xorMask;
dest[destPos + 2] = zeroMapping ^ -(elem >> 5 & 1) & xorMask;
dest[destPos + 3] = zeroMapping ^ -(elem >> 4 & 1) & xorMask;
dest[destPos + 4] = zeroMapping ^ -(elem >> 3 & 1) & xorMask;
dest[destPos + 5] = zeroMapping ^ -(elem >> 2 & 1) & xorMask;
dest[destPos + 6] = zeroMapping ^ -(elem >> 1 & 1) & xorMask;
dest[destPos + 7] = zeroMapping ^ -(elem & 1) & xorMask;
}
if (widthRemainder === 0) {
continue;
}
const elem = srcPos < srcLength ? src[srcPos++] : 255;
for (let j = 0; j < widthRemainder; ++j, ++destPos) {
dest[destPos] = zeroMapping ^ -(elem >> 7 - j & 1) & xorMask;
}
}
return {
srcPos,
destPos
};
}
function convertRGBToRGBA({
src,
srcPos = 0,
dest,
destPos = 0,
width,
height
}) {
let i = 0;
const len = width * height * 3;
const len32 = len >> 2;
const src32 = new Uint32Array(src.buffer, srcPos, len32);
const alphaMask = image_utils_FeatureTest.isLittleEndian ? 0xff000000 : 0xff;
if (image_utils_FeatureTest.isLittleEndian) {
for (; i < len32 - 2; i += 3, destPos += 4) {
const s1 = src32[i],
s2 = src32[i + 1],
s3 = src32[i + 2];
dest[destPos] = s1 | alphaMask;
dest[destPos + 1] = s1 >>> 24 | s2 << 8 | alphaMask;
dest[destPos + 2] = s2 >>> 16 | s3 << 16 | alphaMask;
dest[destPos + 3] = s3 >>> 8 | alphaMask;
}
for (let j = i * 4, jj = srcPos + len; j < jj; j += 3) {
dest[destPos++] = src[j] | src[j + 1] << 8 | src[j + 2] << 16 | alphaMask;
}
} else {
for (; i < len32 - 2; i += 3, destPos += 4) {
const s1 = src32[i],
s2 = src32[i + 1],
s3 = src32[i + 2];
dest[destPos] = s1 | alphaMask;
dest[destPos + 1] = s1 << 24 | s2 >>> 8 | alphaMask;
dest[destPos + 2] = s2 << 16 | s3 >>> 16 | alphaMask;
dest[destPos + 3] = s3 << 8 | alphaMask;
}
for (let j = i * 4, jj = srcPos + len; j < jj; j += 3) {
dest[destPos++] = src[j] << 24 | src[j + 1] << 16 | src[j + 2] << 8 | alphaMask;
}
}
return {
srcPos: srcPos + len,
destPos
};
}
function grayToRGBA(src, dest) {
if (FeatureTest.isLittleEndian) {
for (let i = 0, ii = src.length; i < ii; i++) {
dest[i] = src[i] * 0x10101 | 0xff000000;
}
} else {
for (let i = 0, ii = src.length; i < ii; i++) {
dest[i] = src[i] * 0x1010100 | 0x000000ff;
}
}
}
;// ./src/core/jpg.js
class JpegError extends BaseException {
constructor(msg) {
super(msg, "JpegError");
}
}
class DNLMarkerError extends BaseException {
constructor(message, scanLines) {
super(message, "DNLMarkerError");
this.scanLines = scanLines;
}
}
class EOIMarkerError extends BaseException {
constructor(msg) {
super(msg, "EOIMarkerError");
}
}
const dctZigZag = new Uint8Array([0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 32, 25, 18, 11, 4, 5, 12, 19, 26, 33, 40, 48, 41, 34, 27, 20, 13, 6, 7, 14, 21, 28, 35, 42, 49, 56, 57, 50, 43, 36, 29, 22, 15, 23, 30, 37, 44, 51, 58, 59, 52, 45, 38, 31, 39, 46, 53, 60, 61, 54, 47, 55, 62, 63]);
const dctCos1 = 4017;
const dctSin1 = 799;
const dctCos3 = 3406;
const dctSin3 = 2276;
const dctCos6 = 1567;
const dctSin6 = 3784;
const dctSqrt2 = 5793;
const dctSqrt1d2 = 2896;
function buildHuffmanTable(codeLengths, values) {
let k = 0,
i,
j,
length = 16;
while (length > 0 && !codeLengths[length - 1]) {
length--;
}
const code = [{
children: [],
index: 0
}];
let p = code[0],
q;
for (i = 0; i < length; i++) {
for (j = 0; j < codeLengths[i]; j++) {
p = code.pop();
p.children[p.index] = values[k];
while (p.index > 0) {
p = code.pop();
}
p.index++;
code.push(p);
while (code.length <= i) {
code.push(q = {
children: [],
index: 0
});
p.children[p.index] = q.children;
p = q;
}
k++;
}
if (i + 1 < length) {
code.push(q = {
children: [],
index: 0
});
p.children[p.index] = q.children;
p = q;
}
}
return code[0].children;
}
function getBlockBufferOffset(component, row, col) {
return 64 * ((component.blocksPerLine + 1) * row + col);
}
function decodeScan(data, view, offset, frame, components, resetInterval, spectralStart, spectralEnd, successivePrev, successive, parseDNLMarker = false) {
const mcusPerLine = frame.mcusPerLine;
const progressive = frame.progressive;
const startOffset = offset;
let bitsData = 0,
bitsCount = 0;
function readBit() {
if (bitsCount > 0) {
bitsCount--;
return bitsData >> bitsCount & 1;
}
bitsData = data[offset++];
if (bitsData === 0xff) {
const nextByte = data[offset++];
if (nextByte) {
if (nextByte === 0xdc && parseDNLMarker) {
offset += 2;
const scanLines = view.getUint16(offset);
offset += 2;
if (scanLines > 0 && scanLines !== frame.scanLines) {
throw new DNLMarkerError("Found DNL marker (0xFFDC) while parsing scan data", scanLines);
}
} else if (nextByte === 0xd9) {
if (parseDNLMarker) {
const maybeScanLines = blockRow * (frame.precision === 8 ? 8 : 0);
if (maybeScanLines > 0 && Math.round(frame.scanLines / maybeScanLines) >= 5) {
throw new DNLMarkerError("Found EOI marker (0xFFD9) while parsing scan data, " + "possibly caused by incorrect `scanLines` parameter", maybeScanLines);
}
}
throw new EOIMarkerError("Found EOI marker (0xFFD9) while parsing scan data");
}
throw new JpegError(`unexpected marker ${(bitsData << 8 | nextByte).toString(16)}`);
}
}
bitsCount = 7;
return bitsData >>> 7;
}
function decodeHuffman(tree) {
let node = tree;
while (true) {
node = node[readBit()];
switch (typeof node) {
case "number":
return node;
case "object":
continue;
}
throw new JpegError("invalid huffman sequence");
}
}
function receive(length) {
let n = 0;
while (length > 0) {
n = n << 1 | readBit();
length--;
}
return n;
}
function receiveAndExtend(length) {
if (length === 1) {
return readBit() === 1 ? 1 : -1;
}
const n = receive(length);
if (n >= 1 << length - 1) {
return n;
}
return n + (-1 << length) + 1;
}
function decodeBaseline(component, blockOffset) {
const t = decodeHuffman(component.huffmanTableDC);
const diff = t === 0 ? 0 : receiveAndExtend(t);
component.blockData[blockOffset] = component.pred += diff;
let k = 1;
while (k < 64) {
const rs = decodeHuffman(component.huffmanTableAC);
const s = rs & 15,
r = rs >> 4;
if (s === 0) {
if (r < 15) {
break;
}
k += 16;
continue;
}
k += r;
const z = dctZigZag[k];
component.blockData[blockOffset + z] = receiveAndExtend(s);
k++;
}
}
function decodeDCFirst(component, blockOffset) {
const t = decodeHuffman(component.huffmanTableDC);
const diff = t === 0 ? 0 : receiveAndExtend(t) << successive;
component.blockData[blockOffset] = component.pred += diff;
}
function decodeDCSuccessive(component, blockOffset) {
component.blockData[blockOffset] |= readBit() << successive;
}
let eobrun = 0;
function decodeACFirst(component, blockOffset) {
if (eobrun > 0) {
eobrun--;
return;
}
let k = spectralStart;
const e = spectralEnd;
while (k <= e) {
const rs = decodeHuffman(component.huffmanTableAC);
const s = rs & 15,
r = rs >> 4;
if (s === 0) {
if (r < 15) {
eobrun = receive(r) + (1 << r) - 1;
break;
}
k += 16;
continue;
}
k += r;
const z = dctZigZag[k];
component.blockData[blockOffset + z] = receiveAndExtend(s) * (1 << successive);
k++;
}
}
let successiveACState = 0,
successiveACNextValue;
function decodeACSuccessive(component, blockOffset) {
let k = spectralStart;
const e = spectralEnd;
let r = 0;
let s;
let rs;
while (k <= e) {
const offsetZ = blockOffset + dctZigZag[k];
const sign = component.blockData[offsetZ] < 0 ? -1 : 1;
switch (successiveACState) {
case 0:
rs = decodeHuffman(component.huffmanTableAC);
s = rs & 15;
r = rs >> 4;
if (s === 0) {
if (r < 15) {
eobrun = receive(r) + (1 << r);
successiveACState = 4;
} else {
r = 16;
successiveACState = 1;
}
} else {
if (s !== 1) {
throw new JpegError("invalid ACn encoding");
}
successiveACNextValue = receiveAndExtend(s);
successiveACState = r ? 2 : 3;
}
continue;
case 1:
case 2:
if (component.blockData[offsetZ]) {
component.blockData[offsetZ] += sign * (readBit() << successive);
} else {
r--;
if (r === 0) {
successiveACState = successiveACState === 2 ? 3 : 0;
}
}
break;
case 3:
if (component.blockData[offsetZ]) {
component.blockData[offsetZ] += sign * (readBit() << successive);
} else {
component.blockData[offsetZ] = successiveACNextValue << successive;
successiveACState = 0;
}
break;
case 4:
if (component.blockData[offsetZ]) {
component.blockData[offsetZ] += sign * (readBit() << successive);
}
break;
}
k++;
}
if (successiveACState === 4) {
eobrun--;
if (eobrun === 0) {
successiveACState = 0;
}
}
}
let blockRow = 0;
function decodeMcu(component, decode, mcu, row, col) {
const mcuRow = mcu / mcusPerLine | 0;
const mcuCol = mcu % mcusPerLine;
blockRow = mcuRow * component.v + row;
const blockCol = mcuCol * component.h + col;
const blockOffset = getBlockBufferOffset(component, blockRow, blockCol);
decode(component, blockOffset);
}
function decodeBlock(component, decode, mcu) {
blockRow = mcu / component.blocksPerLine | 0;
const blockCol = mcu % component.blocksPerLine;
const blockOffset = getBlockBufferOffset(component, blockRow, blockCol);
decode(component, blockOffset);
}
const componentsLength = components.length;
let component, i, j, k, n;
let decodeFn;
if (progressive) {
if (spectralStart === 0) {
decodeFn = successivePrev === 0 ? decodeDCFirst : decodeDCSuccessive;
} else {
decodeFn = successivePrev === 0 ? decodeACFirst : decodeACSuccessive;
}
} else {
decodeFn = decodeBaseline;
}
let mcu = 0,
fileMarker;
const mcuExpected = componentsLength === 1 ? components[0].blocksPerLine * components[0].blocksPerColumn : mcusPerLine * frame.mcusPerColumn;
let h, v;
while (mcu <= mcuExpected) {
const mcuToRead = resetInterval ? Math.min(mcuExpected - mcu, resetInterval) : mcuExpected;
if (mcuToRead > 0) {
for (i = 0; i < componentsLength; i++) {
components[i].pred = 0;
}
eobrun = 0;
if (componentsLength === 1) {
component = components[0];
for (n = 0; n < mcuToRead; n++) {
decodeBlock(component, decodeFn, mcu);
mcu++;
}
} else {
for (n = 0; n < mcuToRead; n++) {
for (i = 0; i < componentsLength; i++) {
component = components[i];
h = component.h;
v = component.v;
for (j = 0; j < v; j++) {
for (k = 0; k < h; k++) {
decodeMcu(component, decodeFn, mcu, j, k);
}
}
}
mcu++;
}
}
}
bitsCount = 0;
fileMarker = findNextFileMarker(data, view, offset);
if (!fileMarker) {
break;
}
if (fileMarker.invalid) {
const partialMsg = mcuToRead > 0 ? "unexpected" : "excessive";
warn(`decodeScan - ${partialMsg} MCU data, current marker is: ${fileMarker.invalid}`);
offset = fileMarker.offset;
}
if (fileMarker.marker >= 0xffd0 && fileMarker.marker <= 0xffd7) {
offset += 2;
} else {
break;
}
}
return offset - startOffset;
}
function quantizeAndInverse(component, blockBufferOffset, p) {
const qt = component.quantizationTable,
blockData = component.blockData;
let v0, v1, v2, v3, v4, v5, v6, v7;
let p0, p1, p2, p3, p4, p5, p6, p7;
let t;
if (!qt) {
throw new JpegError("missing required Quantization Table.");
}
for (let row = 0; row < 64; row += 8) {
p0 = blockData[blockBufferOffset + row];
p1 = blockData[blockBufferOffset + row + 1];
p2 = blockData[blockBufferOffset + row + 2];
p3 = blockData[blockBufferOffset + row + 3];
p4 = blockData[blockBufferOffset + row + 4];
p5 = blockData[blockBufferOffset + row + 5];
p6 = blockData[blockBufferOffset + row + 6];
p7 = blockData[blockBufferOffset + row + 7];
p0 *= qt[row];
if ((p1 | p2 | p3 | p4 | p5 | p6 | p7) === 0) {
t = dctSqrt2 * p0 + 512 >> 10;
p[row] = t;
p[row + 1] = t;
p[row + 2] = t;
p[row + 3] = t;
p[row + 4] = t;
p[row + 5] = t;
p[row + 6] = t;
p[row + 7] = t;
continue;
}
p1 *= qt[row + 1];
p2 *= qt[row + 2];
p3 *= qt[row + 3];
p4 *= qt[row + 4];
p5 *= qt[row + 5];
p6 *= qt[row + 6];
p7 *= qt[row + 7];
v0 = dctSqrt2 * p0 + 128 >> 8;
v1 = dctSqrt2 * p4 + 128 >> 8;
v2 = p2;
v3 = p6;
v4 = dctSqrt1d2 * (p1 - p7) + 128 >> 8;
v7 = dctSqrt1d2 * (p1 + p7) + 128 >> 8;
v5 = p3 << 4;
v6 = p5 << 4;
v0 = v0 + v1 + 1 >> 1;
v1 = v0 - v1;
t = v2 * dctSin6 + v3 * dctCos6 + 128 >> 8;
v2 = v2 * dctCos6 - v3 * dctSin6 + 128 >> 8;
v3 = t;
v4 = v4 + v6 + 1 >> 1;
v6 = v4 - v6;
v7 = v7 + v5 + 1 >> 1;
v5 = v7 - v5;
v0 = v0 + v3 + 1 >> 1;
v3 = v0 - v3;
v1 = v1 + v2 + 1 >> 1;
v2 = v1 - v2;
t = v4 * dctSin3 + v7 * dctCos3 + 2048 >> 12;
v4 = v4 * dctCos3 - v7 * dctSin3 + 2048 >> 12;
v7 = t;
t = v5 * dctSin1 + v6 * dctCos1 + 2048 >> 12;
v5 = v5 * dctCos1 - v6 * dctSin1 + 2048 >> 12;
v6 = t;
p[row] = v0 + v7;
p[row + 7] = v0 - v7;
p[row + 1] = v1 + v6;
p[row + 6] = v1 - v6;
p[row + 2] = v2 + v5;
p[row + 5] = v2 - v5;
p[row + 3] = v3 + v4;
p[row + 4] = v3 - v4;
}
for (let col = 0; col < 8; ++col) {
p0 = p[col];
p1 = p[col + 8];
p2 = p[col + 16];
p3 = p[col + 24];
p4 = p[col + 32];
p5 = p[col + 40];
p6 = p[col + 48];
p7 = p[col + 56];
if ((p1 | p2 | p3 | p4 | p5 | p6 | p7) === 0) {
t = dctSqrt2 * p0 + 8192 >> 14;
if (t < -2040) {
t = 0;
} else if (t >= 2024) {
t = 255;
} else {
t = t + 2056 >> 4;
}
blockData[blockBufferOffset + col] = t;
blockData[blockBufferOffset + col + 8] = t;
blockData[blockBufferOffset + col + 16] = t;
blockData[blockBufferOffset + col + 24] = t;
blockData[blockBufferOffset + col + 32] = t;
blockData[blockBufferOffset + col + 40] = t;
blockData[blockBufferOffset + col + 48] = t;
blockData[blockBufferOffset + col + 56] = t;
continue;
}
v0 = dctSqrt2 * p0 + 2048 >> 12;
v1 = dctSqrt2 * p4 + 2048 >> 12;
v2 = p2;
v3 = p6;
v4 = dctSqrt1d2 * (p1 - p7) + 2048 >> 12;
v7 = dctSqrt1d2 * (p1 + p7) + 2048 >> 12;
v5 = p3;
v6 = p5;
v0 = (v0 + v1 + 1 >> 1) + 4112;
v1 = v0 - v1;
t = v2 * dctSin6 + v3 * dctCos6 + 2048 >> 12;
v2 = v2 * dctCos6 - v3 * dctSin6 + 2048 >> 12;
v3 = t;
v4 = v4 + v6 + 1 >> 1;
v6 = v4 - v6;
v7 = v7 + v5 + 1 >> 1;
v5 = v7 - v5;
v0 = v0 + v3 + 1 >> 1;
v3 = v0 - v3;
v1 = v1 + v2 + 1 >> 1;
v2 = v1 - v2;
t = v4 * dctSin3 + v7 * dctCos3 + 2048 >> 12;
v4 = v4 * dctCos3 - v7 * dctSin3 + 2048 >> 12;
v7 = t;
t = v5 * dctSin1 + v6 * dctCos1 + 2048 >> 12;
v5 = v5 * dctCos1 - v6 * dctSin1 + 2048 >> 12;
v6 = t;
p0 = v0 + v7;
p7 = v0 - v7;
p1 = v1 + v6;
p6 = v1 - v6;
p2 = v2 + v5;
p5 = v2 - v5;
p3 = v3 + v4;
p4 = v3 - v4;
if (p0 < 16) {
p0 = 0;
} else if (p0 >= 4080) {
p0 = 255;
} else {
p0 >>= 4;
}
if (p1 < 16) {
p1 = 0;
} else if (p1 >= 4080) {
p1 = 255;
} else {
p1 >>= 4;
}
if (p2 < 16) {
p2 = 0;
} else if (p2 >= 4080) {
p2 = 255;
} else {
p2 >>= 4;
}
if (p3 < 16) {
p3 = 0;
} else if (p3 >= 4080) {
p3 = 255;
} else {
p3 >>= 4;
}
if (p4 < 16) {
p4 = 0;
} else if (p4 >= 4080) {
p4 = 255;
} else {
p4 >>= 4;
}
if (p5 < 16) {
p5 = 0;
} else if (p5 >= 4080) {
p5 = 255;
} else {
p5 >>= 4;
}
if (p6 < 16) {
p6 = 0;
} else if (p6 >= 4080) {
p6 = 255;
} else {
p6 >>= 4;
}
if (p7 < 16) {
p7 = 0;
} else if (p7 >= 4080) {
p7 = 255;
} else {
p7 >>= 4;
}
blockData[blockBufferOffset + col] = p0;
blockData[blockBufferOffset + col + 8] = p1;
blockData[blockBufferOffset + col + 16] = p2;
blockData[blockBufferOffset + col + 24] = p3;
blockData[blockBufferOffset + col + 32] = p4;
blockData[blockBufferOffset + col + 40] = p5;
blockData[blockBufferOffset + col + 48] = p6;
blockData[blockBufferOffset + col + 56] = p7;
}
}
function buildComponentData(frame, component) {
const blocksPerLine = component.blocksPerLine;
const blocksPerColumn = component.blocksPerColumn;
const computationBuffer = new Int16Array(64);
for (let blockRow = 0; blockRow < blocksPerColumn; blockRow++) {
for (let blockCol = 0; blockCol < blocksPerLine; blockCol++) {
const offset = getBlockBufferOffset(component, blockRow, blockCol);
quantizeAndInverse(component, offset, computationBuffer);
}
}
return component.blockData;
}
function findNextFileMarker(data, view, currentPos, startPos = currentPos) {
const maxPos = data.length - 1;
let newPos = startPos < currentPos ? startPos : currentPos;
if (currentPos >= maxPos) {
return null;
}
const currentMarker = view.getUint16(currentPos);
if (currentMarker >= 0xffc0 && currentMarker <= 0xfffe) {
return {
invalid: null,
marker: currentMarker,
offset: currentPos
};
}
let newMarker = view.getUint16(newPos);
while (!(newMarker >= 0xffc0 && newMarker <= 0xfffe)) {
if (++newPos >= maxPos) {
return null;
}
newMarker = view.getUint16(newPos);
}
return {
invalid: currentMarker.toString(16),
marker: newMarker,
offset: newPos
};
}
function prepareComponents(frame) {
const mcusPerLine = Math.ceil(frame.samplesPerLine / 8 / frame.maxH);
const mcusPerColumn = Math.ceil(frame.scanLines / 8 / frame.maxV);
for (const component of frame.components) {
const blocksPerLine = Math.ceil(Math.ceil(frame.samplesPerLine / 8) * component.h / frame.maxH);
const blocksPerColumn = Math.ceil(Math.ceil(frame.scanLines / 8) * component.v / frame.maxV);
const blocksPerLineForMcu = mcusPerLine * component.h;
const blocksPerColumnForMcu = mcusPerColumn * component.v;
const blocksBufferSize = 64 * blocksPerColumnForMcu * (blocksPerLineForMcu + 1);
component.blockData = new Int16Array(blocksBufferSize);
component.blocksPerLine = blocksPerLine;
component.blocksPerColumn = blocksPerColumn;
}
frame.mcusPerLine = mcusPerLine;
frame.mcusPerColumn = mcusPerColumn;
}
function readDataBlock(data, view, offset) {
const length = view.getUint16(offset);
offset += 2;
let endOffset = offset + length - 2;
const fileMarker = findNextFileMarker(data, view, endOffset, offset);
if (fileMarker?.invalid) {
warn("readDataBlock - incorrect length, current marker is: " + fileMarker.invalid);
endOffset = fileMarker.offset;
}
const array = data.subarray(offset, endOffset);
return {
appData: array,
oldOffset: offset,
newOffset: offset + array.length
};
}
function skipData(data, view, offset) {
const length = view.getUint16(offset);
offset += 2;
const endOffset = offset + length - 2;
const fileMarker = findNextFileMarker(data, view, endOffset, offset);
if (fileMarker?.invalid) {
return fileMarker.offset;
}
return endOffset;
}
class JpegImage {
constructor(options) {
this._colorTransform = options?.colorTransform ?? -1;
this._decodeTransform = options?.decodeTransform || null;
this._isSourcePDF = false;
}
static canUseImageDecoder(data, colorTransform = -1) {
const view = new DataView(data.buffer, data.byteOffset, data.byteLength);
const info = {
width: 0,
height: 0,
exifStart: 0,
exifEnd: 0
};
let offset = 0;
let numComponents = null;
let fileMarker = view.getUint16(offset);
offset += 2;
if (fileMarker !== 0xffd8) {
throw new JpegError("SOI not found");
}
fileMarker = view.getUint16(offset);
offset += 2;
markerLoop: while (fileMarker !== 0xffd9) {
switch (fileMarker) {
case 0xffe1:
const {
appData,
oldOffset,
newOffset
} = readDataBlock(data, view, offset);
offset = newOffset;
if (appData[0] === 0x45 && appData[1] === 0x78 && appData[2] === 0x69 && appData[3] === 0x66 && appData[4] === 0 && appData[5] === 0) {
if (info.exifStart) {
throw new JpegError("Duplicate EXIF-blocks found.");
}
info.exifStart = oldOffset + 6;
info.exifEnd = newOffset;
}
fileMarker = view.getUint16(offset);
offset += 2;
continue;
case 0xffc0:
case 0xffc1:
case 0xffc2:
info.height = view.getUint16(offset + (2 + 1));
info.width = view.getUint16(offset + (2 + 1 + 2));
numComponents = data[offset + (2 + 1 + 2 + 2)];
break markerLoop;
case 0xffff:
if (data[offset] !== 0xff) {
offset--;
}
break;
}
offset = skipData(data, view, offset);
fileMarker = view.getUint16(offset);
offset += 2;
}
if (numComponents === 4) {
return null;
}
if (numComponents === 3 && colorTransform === 0) {
return null;
}
return info;
}
parse(data, {
dnlScanLines = null
} = {}) {
const view = new DataView(data.buffer, data.byteOffset, data.byteLength);
const maxOffset = data.length - 1;
let offset = 0;
let jfif = null;
let adobe = null;
let frame, resetInterval;
let numSOSMarkers = 0;
const quantizationTables = [];
const huffmanTablesAC = [],
huffmanTablesDC = [];
let fileMarker = view.getUint16(offset);
offset += 2;
if (fileMarker !== 0xffd8) {
throw new JpegError("SOI not found");
}
fileMarker = view.getUint16(offset);
offset += 2;
markerLoop: while (fileMarker !== 0xffd9) {
let i, j, l;
switch (fileMarker) {
case 0xffe0:
case 0xffe1:
case 0xffe2:
case 0xffe3:
case 0xffe4:
case 0xffe5:
case 0xffe6:
case 0xffe7:
case 0xffe8:
case 0xffe9:
case 0xffea:
case 0xffeb:
case 0xffec:
case 0xffed:
case 0xffee:
case 0xffef:
case 0xfffe:
const {
appData,
newOffset
} = readDataBlock(data, view, offset);
offset = newOffset;
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 = view.getUint16(offset);
offset += 2;
const quantizationTablesEnd = quantizationTablesLength + offset - 2;
let z;
while (offset < quantizationTablesEnd) {
const quantizationTableSpec = data[offset++];
const tableData = new Uint16Array(64);
if (quantizationTableSpec >> 4 === 0) {
for (j = 0; j < 64; j++) {
z = dctZigZag[j];
tableData[z] = data[offset++];
}
} else if (quantizationTableSpec >> 4 === 1) {
for (j = 0; j < 64; j++) {
z = dctZigZag[j];
tableData[z] = view.getUint16(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 = view.getUint16(offset);
offset += 2;
frame.scanLines = dnlScanLines || sofScanLines;
frame.samplesPerLine = view.getUint16(offset);
offset += 2;
frame.components = [];
frame.componentIds = {};
const componentsCount = data[offset++];
let maxH = 0,
maxV = 0;
for (i = 0; i < componentsCount; i++) {
const componentId = data[offset];
const h = data[offset + 1] >> 4;
const v = data[offset + 1] & 15;
if (maxH < h) {
maxH = h;
}
if (maxV < v) {
maxV = v;
}
const qId = data[offset + 2];
l = frame.components.push({
h,
v,
quantizationId: qId,
quantizationTable: null
});
frame.componentIds[componentId] = l - 1;
offset += 3;
}
frame.maxH = maxH;
frame.maxV = maxV;
prepareComponents(frame);
break;
case 0xffc4:
const huffmanLength = view.getUint16(offset);
offset += 2;
for (i = 2; i < huffmanLength;) {
const huffmanTableSpec = data[offset++];
const codeLengths = new Uint8Array(16);
let codeLengthSum = 0;
for (j = 0; j < 16; j++, offset++) {
codeLengthSum += codeLengths[j] = data[offset];
}
const huffmanValues = new Uint8Array(codeLengthSum);
for (j = 0; j < codeLengthSum; j++, offset++) {
huffmanValues[j] = data[offset];
}
i += 17 + codeLengthSum;
(huffmanTableSpec >> 4 === 0 ? huffmanTablesDC : huffmanTablesAC)[huffmanTableSpec & 15] = buildHuffmanTable(codeLengths, huffmanValues);
}
break;
case 0xffdd:
offset += 2;
resetInterval = view.getUint16(offset);
offset += 2;
break;
case 0xffda:
const parseDNLMarker = ++numSOSMarkers === 1 && !dnlScanLines;
offset += 2;
const selectorsCount = data[offset++],
components = [];
for (i = 0; i < selectorsCount; i++) {
const index = data[offset++];
const componentIndex = frame.componentIds[index];
const component = frame.components[componentIndex];
component.index = index;
const tableSpec = data[offset++];
component.huffmanTableDC = huffmanTablesDC[tableSpec >> 4];
component.huffmanTableAC = huffmanTablesAC[tableSpec & 15];
components.push(component);
}
const spectralStart = data[offset++],
spectralEnd = data[offset++],
successiveApproximation = data[offset++];
try {
const processed = decodeScan(data, view, offset, frame, components, resetInterval, spectralStart, spectralEnd, successiveApproximation >> 4, successiveApproximation & 15, parseDNLMarker);
offset += processed;
} catch (ex) {
if (ex instanceof DNLMarkerError) {
warn(`${ex.message} -- attempting to re-parse the JPEG image.`);
return this.parse(data, {
dnlScanLines: ex.scanLines
});
} else if (ex instanceof EOIMarkerError) {
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, view, offset - 2, offset - 3);
if (nextFileMarker?.invalid) {
warn("JpegImage.parse - unexpected data, current marker is: " + nextFileMarker.invalid);
offset = nextFileMarker.offset;
break;
}
if (!nextFileMarker || offset >= maxOffset) {
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));
}
if (offset < maxOffset) {
fileMarker = view.getUint16(offset);
offset += 2;
} else {
fileMarker = 0;
}
}
if (!frame) {
throw new JpegError("JpegImage.parse - no frame data found.");
}
this.width = frame.samplesPerLine;
this.height = frame.scanLines;
this.jfif = jfif;
this.adobe = adobe;
this.components = [];
for (const component of frame.components) {
const quantizationTable = quantizationTables[component.quantizationId];
if (quantizationTable) {
component.quantizationTable = quantizationTable;
}
this.components.push({
index: component.index,
output: buildComponentData(frame, component),
scaleX: component.h / frame.maxH,
scaleY: component.v / frame.maxV,
blocksPerLine: component.blocksPerLine,
blocksPerColumn: component.blocksPerColumn
});
}
this.numComponents = this.components.length;
return undefined;
}
#getLinearizedBlockData(width, height) {
const scaleX = this.width / width,
scaleY = this.height / height;
let component, componentScaleX, componentScaleY, blocksPerScanline;
let x, y, i, j, k;
let index;
let offset = 0;
let output;
const numComponents = this.components.length;
const dataLength = width * height * numComponents;
const data = new Uint8ClampedArray(dataLength);
const xScaleBlockOffset = new Uint32Array(width);
const mask3LSB = 0xfffffff8;
let lastComponentScaleX;
for (i = 0; i < numComponents; i++) {
component = this.components[i];
componentScaleX = component.scaleX * scaleX;
componentScaleY = component.scaleY * scaleY;
offset = i;
output = component.output;
blocksPerScanline = component.blocksPerLine + 1 << 3;
if (componentScaleX !== lastComponentScaleX) {
for (x = 0; x < width; x++) {
j = 0 | x * componentScaleX;
xScaleBlockOffset[x] = (j & mask3LSB) << 3 | j & 7;
}
lastComponentScaleX = componentScaleX;
}
for (y = 0; y < height; y++) {
j = 0 | y * componentScaleY;
index = blocksPerScanline * (j & mask3LSB) | (j & 7) << 3;
for (x = 0; x < width; x++) {
data[offset] = output[index + xScaleBlockOffset[x]];
offset += numComponents;
}
}
}
let transform = this._decodeTransform;
if (!this._isSourcePDF && numComponents === 4) {
transform ||= new Int32Array([-256, 255, -256, 255, -256, 255, -256, 255]);
}
if (transform) {
for (i = 0; i < dataLength;) {
for (j = 0, k = 0; j < numComponents; j++, i++, k += 2) {
data[i] = (data[i] * transform[k] >> 8) + transform[k + 1];
}
}
}
return data;
}
get _isColorConversionNeeded() {
if (this.adobe) {
return !!this.adobe.transformCode;
}
if (this.numComponents === 3) {
if (this._colorTransform === 0) {
return false;
} else if (this.components[0].index === 0x52 && this.components[1].index === 0x47 && this.components[2].index === 0x42) {
return false;
}
return true;
}
if (this._colorTransform === 1) {
return true;
}
return false;
}
_convertYccToRgb(data) {
let Y, Cb, Cr;
for (let i = 0, ii = data.length; i < ii; i += 3) {
Y = data[i];
Cb = data[i + 1];
Cr = data[i + 2];
data[i] = Y - 179.456 + 1.402 * Cr;
data[i + 1] = Y + 135.459 - 0.344 * Cb - 0.714 * Cr;
data[i + 2] = Y - 226.816 + 1.772 * Cb;
}
return data;
}
_convertYccToRgba(data, out) {
for (let i = 0, j = 0, ii = data.length; i < ii; i += 3, j += 4) {
const Y = data[i];
const Cb = data[i + 1];
const Cr = data[i + 2];
out[j] = Y - 179.456 + 1.402 * Cr;
out[j + 1] = Y + 135.459 - 0.344 * Cb - 0.714 * Cr;
out[j + 2] = Y - 226.816 + 1.772 * Cb;
out[j + 3] = 255;
}
return out;
}
_convertYcckToRgb(data) {
this._convertYcckToCmyk(data);
return this._convertCmykToRgb(data);
}
_convertYcckToRgba(data) {
this._convertYcckToCmyk(data);
return this._convertCmykToRgba(data);
}
_convertYcckToCmyk(data) {
let Y, Cb, Cr;
for (let i = 0, ii = data.length; i < ii; i += 4) {
Y = data[i];
Cb = data[i + 1];
Cr = data[i + 2];
data[i] = 434.456 - Y - 1.402 * Cr;
data[i + 1] = 119.541 - Y + 0.344 * Cb + 0.714 * Cr;
data[i + 2] = 481.816 - Y - 1.772 * Cb;
}
return data;
}
_convertCmykToRgb(data) {
const count = data.length / 4;
ColorSpaceUtils.cmyk.getRgbBuffer(data, 0, count, data, 0, 8, 0);
return data.subarray(0, count * 3);
}
_convertCmykToRgba(data) {
ColorSpaceUtils.cmyk.getRgbBuffer(data, 0, data.length / 4, data, 0, 8, 1);
if (ColorSpaceUtils.cmyk instanceof DeviceCmykCS) {
for (let i = 3, ii = data.length; i < ii; i += 4) {
data[i] = 255;
}
}
return data;
}
getData({
width,
height,
forceRGBA = false,
forceRGB = false
}) {
if (this.numComponents > 4) {
throw new JpegError("Unsupported color mode");
}
this._isSourcePDF = arguments[0]?.isSourcePDF === true;
const data = this.#getLinearizedBlockData(width, height);
if (this.numComponents === 1 && (forceRGBA || forceRGB)) {
const len = data.length * (forceRGBA ? 4 : 3);
const rgbaData = new Uint8ClampedArray(len);
let offset = 0;
if (forceRGBA) {
grayToRGBA(data, new Uint32Array(rgbaData.buffer));
} else {
for (const grayColor of data) {
rgbaData[offset++] = grayColor;
rgbaData[offset++] = grayColor;
rgbaData[offset++] = grayColor;
}
}
return rgbaData;
} else if (this.numComponents === 3 && this._isColorConversionNeeded) {
if (forceRGBA) {
const rgbaData = new Uint8ClampedArray(data.length / 3 * 4);
return this._convertYccToRgba(data, rgbaData);
}
return this._convertYccToRgb(data);
} else if (this.numComponents === 4) {
if (this._isColorConversionNeeded) {
if (forceRGBA) {
return this._convertYcckToRgba(data);
}
if (forceRGB) {
return this._convertYcckToRgb(data);
}
return this._convertYcckToCmyk(data);
} else if (forceRGBA) {
return this._convertCmykToRgba(data);
} else if (forceRGB) {
return this._convertCmykToRgb(data);
}
}
return data;
}
}
;// ./external/openjpeg/openjpeg.js
async function OpenJPEG(moduleArg = {}) {
var moduleRtn;
var Module = moduleArg;
var ENVIRONMENT_IS_WEB = true;
var ENVIRONMENT_IS_WORKER = false;
var arguments_ = [];
var thisProgram = "./this.program";
var quit_ = (status, toThrow) => {
throw toThrow;
};
var _scriptName = import.meta.url;
var scriptDirectory = "";
var readAsync, readBinary;
if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
try {
scriptDirectory = new URL(".", _scriptName).href;
} catch {}
readAsync = async url => {
var response = await fetch(url, {
credentials: "same-origin"
});
if (response.ok) {
return response.arrayBuffer();
}
throw new Error(response.status + " : " + response.url);
};
} else {}
var out = console.log.bind(console);
var err = console.error.bind(console);
var wasmBinary;
var ABORT = false;
var EXITSTATUS;
class EmscriptenEH {}
class EmscriptenSjLj extends EmscriptenEH {}
var readyPromiseResolve, readyPromiseReject;
var runtimeInitialized = false;
function updateMemoryViews() {
var b = wasmMemory.buffer;
HEAP8 = new Int8Array(b);
HEAP16 = new Int16Array(b);
HEAPU8 = new Uint8Array(b);
HEAPU16 = new Uint16Array(b);
HEAP32 = new Int32Array(b);
HEAPU32 = new Uint32Array(b);
HEAPF32 = new Float32Array(b);
HEAPF64 = new Float64Array(b);
HEAP64 = new BigInt64Array(b);
HEAPU64 = new BigUint64Array(b);
}
function preRun() {
if (Module["preRun"]) {
if (typeof Module["preRun"] == "function") Module["preRun"] = [Module["preRun"]];
while (Module["preRun"].length) {
addOnPreRun(Module["preRun"].shift());
}
}
callRuntimeCallbacks(onPreRuns);
}
function initRuntime() {
runtimeInitialized = true;
wasmExports["s"]();
}
function postRun() {
if (Module["postRun"]) {
if (typeof Module["postRun"] == "function") Module["postRun"] = [Module["postRun"]];
while (Module["postRun"].length) {
addOnPostRun(Module["postRun"].shift());
}
}
callRuntimeCallbacks(onPostRuns);
}
function abort(what) {
Module["onAbort"]?.(what);
what = `Aborted(${what})`;
err(what);
ABORT = true;
what += ". Build with -sASSERTIONS for more info.";
var e = new WebAssembly.RuntimeError(what);
readyPromiseReject?.(e);
throw e;
}
var wasmBinaryFile;
function getWasmImports() {
var imports = {
a: wasmImports
};
return imports;
}
async function createWasm() {
function receiveInstance(instance, module) {
wasmExports = instance.exports;
assignWasmExports(wasmExports);
updateMemoryViews();
return wasmExports;
}
var info = getWasmImports();
return new Promise((resolve, reject) => {
Module["instantiateWasm"](info, (inst, mod) => {
resolve(receiveInstance(inst, mod));
});
});
}
class ExitStatus {
name = "ExitStatus";
constructor(status) {
this.message = `Program terminated with exit(${status})`;
this.status = status;
}
}
var HEAP16;
var HEAP32;
var HEAP64;
var HEAP8;
var HEAPF32;
var HEAPF64;
var HEAPU16;
var HEAPU32;
var HEAPU64;
var HEAPU8;
var callRuntimeCallbacks = callbacks => {
while (callbacks.length > 0) {
callbacks.shift()(Module);
}
};
var onPostRuns = [];
var addOnPostRun = cb => onPostRuns.push(cb);
var onPreRuns = [];
var addOnPreRun = cb => onPreRuns.push(cb);
var noExitRuntime = true;
var __abort_js = () => abort("");
var runtimeKeepaliveCounter = 0;
var __emscripten_runtime_keepalive_clear = () => {
noExitRuntime = false;
runtimeKeepaliveCounter = 0;
};
var timers = {};
var handleException = e => {
if (e instanceof ExitStatus || e == "unwind") {
return EXITSTATUS;
}
quit_(1, e);
};
var keepRuntimeAlive = () => noExitRuntime || runtimeKeepaliveCounter > 0;
var _proc_exit = code => {
EXITSTATUS = code;
if (!keepRuntimeAlive()) {
Module["onExit"]?.(code);
ABORT = true;
}
quit_(code, new ExitStatus(code));
};
var exitJS = (status, implicit) => {
EXITSTATUS = status;
_proc_exit(status);
};
var _exit = exitJS;
var maybeExit = () => {
if (!keepRuntimeAlive()) {
try {
_exit(EXITSTATUS);
} catch (e) {
handleException(e);
}
}
};
var callUserCallback = func => {
if (ABORT) {
return;
}
try {
return func();
} catch (e) {
handleException(e);
} finally {
maybeExit();
}
};
var _emscripten_get_now = () => performance.now();
var __setitimer_js = (which, timeout_ms) => {
if (timers[which]) {
clearTimeout(timers[which].id);
delete timers[which];
}
if (!timeout_ms) return 0;
var id = setTimeout(() => {
delete timers[which];
callUserCallback(() => __emscripten_timeout(which, _emscripten_get_now()));
}, timeout_ms);
timers[which] = {
id,
timeout_ms
};
return 0;
};
function _copy_pixels_1(compG_ptr, nb_pixels) {
compG_ptr >>= 2;
const imageData = Module.imageData = new Uint8ClampedArray(nb_pixels);
const compG = HEAP32.subarray(compG_ptr, compG_ptr + nb_pixels);
imageData.set(compG);
}
function _copy_pixels_3(compR_ptr, compG_ptr, compB_ptr, nb_pixels) {
compR_ptr >>= 2;
compG_ptr >>= 2;
compB_ptr >>= 2;
const imageData = Module.imageData = new Uint8ClampedArray(nb_pixels * 3);
const compR = HEAP32.subarray(compR_ptr, compR_ptr + nb_pixels);
const compG = HEAP32.subarray(compG_ptr, compG_ptr + nb_pixels);
const compB = HEAP32.subarray(compB_ptr, compB_ptr + nb_pixels);
for (let i = 0; i < nb_pixels; i++) {
imageData[3 * i] = compR[i];
imageData[3 * i + 1] = compG[i];
imageData[3 * i + 2] = compB[i];
}
}
function _copy_pixels_4(compR_ptr, compG_ptr, compB_ptr, compA_ptr, nb_pixels) {
compR_ptr >>= 2;
compG_ptr >>= 2;
compB_ptr >>= 2;
compA_ptr >>= 2;
const imageData = Module.imageData = new Uint8ClampedArray(nb_pixels * 4);
const compR = HEAP32.subarray(compR_ptr, compR_ptr + nb_pixels);
const compG = HEAP32.subarray(compG_ptr, compG_ptr + nb_pixels);
const compB = HEAP32.subarray(compB_ptr, compB_ptr + nb_pixels);
const compA = HEAP32.subarray(compA_ptr, compA_ptr + nb_pixels);
for (let i = 0; i < nb_pixels; i++) {
imageData[4 * i] = compR[i];
imageData[4 * i + 1] = compG[i];
imageData[4 * i + 2] = compB[i];
imageData[4 * i + 3] = compA[i];
}
}
var getHeapMax = () => 2147483648;
var alignMemory = (size, alignment) => Math.ceil(size / alignment) * alignment;
var growMemory = size => {
var oldHeapSize = wasmMemory.buffer.byteLength;
var pages = (size - oldHeapSize + 65535) / 65536 | 0;
try {
wasmMemory.grow(pages);
updateMemoryViews();
return 1;
} catch (e) {}
};
var _emscripten_resize_heap = requestedSize => {
var oldSize = HEAPU8.length;
requestedSize >>>= 0;
var maxHeapSize = getHeapMax();
if (requestedSize > maxHeapSize) {
return false;
}
for (var cutDown = 1; cutDown <= 4; cutDown *= 2) {
var overGrownHeapSize = oldSize * (1 + .2 / cutDown);
overGrownHeapSize = Math.min(overGrownHeapSize, requestedSize + 100663296);
var newSize = Math.min(maxHeapSize, alignMemory(Math.max(requestedSize, overGrownHeapSize), 65536));
var replacement = growMemory(newSize);
if (replacement) {
return true;
}
}
return false;
};
var ENV = {};
var getExecutableName = () => thisProgram || "./this.program";
var getEnvStrings = () => {
if (!getEnvStrings.strings) {
var lang = (globalThis.navigator?.language ?? "C").replace("-", "_") + ".UTF-8";
var env = {
USER: "web_user",
LOGNAME: "web_user",
PATH: "/",
PWD: "/",
HOME: "/home/web_user",
LANG: lang,
_: getExecutableName()
};
for (var x in ENV) {
if (ENV[x] === undefined) delete env[x];else env[x] = ENV[x];
}
var strings = [];
for (var x in env) {
strings.push(`${x}=${env[x]}`);
}
getEnvStrings.strings = strings;
}
return getEnvStrings.strings;
};
var stringToUTF8Array = (str, heap, outIdx, maxBytesToWrite) => {
if (!(maxBytesToWrite > 0)) return 0;
var startIdx = outIdx;
var endIdx = outIdx + maxBytesToWrite - 1;
for (var i = 0; i < str.length; ++i) {
var u = str.codePointAt(i);
if (u <= 127) {
if (outIdx >= endIdx) break;
heap[outIdx++] = u;
} else if (u <= 2047) {
if (outIdx + 1 >= endIdx) break;
heap[outIdx++] = 192 | u >> 6;
heap[outIdx++] = 128 | u & 63;
} else if (u <= 65535) {
if (outIdx + 2 >= endIdx) break;
heap[outIdx++] = 224 | u >> 12;
heap[outIdx++] = 128 | u >> 6 & 63;
heap[outIdx++] = 128 | u & 63;
} else {
if (outIdx + 3 >= endIdx) break;
heap[outIdx++] = 240 | u >> 18;
heap[outIdx++] = 128 | u >> 12 & 63;
heap[outIdx++] = 128 | u >> 6 & 63;
heap[outIdx++] = 128 | u & 63;
i++;
}
}
heap[outIdx] = 0;
return outIdx - startIdx;
};
var stringToUTF8 = (str, outPtr, maxBytesToWrite) => stringToUTF8Array(str, HEAPU8, outPtr, maxBytesToWrite);
var _environ_get = (__environ, environ_buf) => {
var bufSize = 0;
var envp = 0;
for (var string of getEnvStrings()) {
var ptr = environ_buf + bufSize;
HEAPU32[__environ + envp >> 2] = ptr;
bufSize += stringToUTF8(string, ptr, Infinity) + 1;
envp += 4;
}
return 0;
};
var lengthBytesUTF8 = str => {
var len = 0;
for (var i = 0; i < str.length; ++i) {
var c = str.charCodeAt(i);
if (c <= 127) {
len++;
} else if (c <= 2047) {
len += 2;
} else if (c >= 55296 && c <= 57343) {
len += 4;
++i;
} else {
len += 3;
}
}
return len;
};
var _environ_sizes_get = (penviron_count, penviron_buf_size) => {
var strings = getEnvStrings();
HEAPU32[penviron_count >> 2] = strings.length;
var bufSize = 0;
for (var string of strings) {
bufSize += lengthBytesUTF8(string) + 1;
}
HEAPU32[penviron_buf_size >> 2] = bufSize;
return 0;
};
var INT53_MAX = 9007199254740992;
var INT53_MIN = -9007199254740992;
var bigintToI53Checked = num => num < INT53_MIN || num > INT53_MAX ? NaN : Number(num);
function _fd_seek(fd, offset, whence, newOffset) {
offset = bigintToI53Checked(offset);
return 70;
}
var printCharBuffers = [null, [], []];
var UTF8Decoder = globalThis.TextDecoder && new TextDecoder();
var findStringEnd = (heapOrArray, idx, maxBytesToRead, ignoreNul) => {
var maxIdx = idx + maxBytesToRead;
if (ignoreNul) return maxIdx;
while (heapOrArray[idx] && !(idx >= maxIdx)) ++idx;
return idx;
};
var UTF8ArrayToString = (heapOrArray, idx = 0, maxBytesToRead, ignoreNul) => {
var endPtr = findStringEnd(heapOrArray, idx, maxBytesToRead, ignoreNul);
if (endPtr - idx > 16 && heapOrArray.buffer && UTF8Decoder) {
return UTF8Decoder.decode(heapOrArray.subarray(idx, endPtr));
}
var str = "";
while (idx < endPtr) {
var u0 = heapOrArray[idx++];
if (!(u0 & 128)) {
str += String.fromCharCode(u0);
continue;
}
var u1 = heapOrArray[idx++] & 63;
if ((u0 & 224) == 192) {
str += String.fromCharCode((u0 & 31) << 6 | u1);
continue;
}
var u2 = heapOrArray[idx++] & 63;
if ((u0 & 240) == 224) {
u0 = (u0 & 15) << 12 | u1 << 6 | u2;
} else {
u0 = (u0 & 7) << 18 | u1 << 12 | u2 << 6 | heapOrArray[idx++] & 63;
}
if (u0 < 65536) {
str += String.fromCharCode(u0);
} else {
var ch = u0 - 65536;
str += String.fromCharCode(55296 | ch >> 10, 56320 | ch & 1023);
}
}
return str;
};
var printChar = (stream, curr) => {
var buffer = printCharBuffers[stream];
if (curr === 0 || curr === 10) {
(stream === 1 ? out : err)(UTF8ArrayToString(buffer));
buffer.length = 0;
} else {
buffer.push(curr);
}
};
var UTF8ToString = (ptr, maxBytesToRead, ignoreNul) => ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead, ignoreNul) : "";
var _fd_write = (fd, iov, iovcnt, pnum) => {
var num = 0;
for (var i = 0; i < iovcnt; i++) {
var ptr = HEAPU32[iov >> 2];
var len = HEAPU32[iov + 4 >> 2];
iov += 8;
for (var j = 0; j < len; j++) {
printChar(fd, HEAPU8[ptr + j]);
}
num += len;
}
HEAPU32[pnum >> 2] = num;
return 0;
};
function _gray_to_rgba(compG_ptr, nb_pixels) {
compG_ptr >>= 2;
const imageData = Module.imageData = new Uint8ClampedArray(nb_pixels * 4);
const compG = HEAP32.subarray(compG_ptr, compG_ptr + nb_pixels);
for (let i = 0; i < nb_pixels; i++) {
imageData[4 * i] = imageData[4 * i + 1] = imageData[4 * i + 2] = compG[i];
imageData[4 * i + 3] = 255;
}
}
function _graya_to_rgba(compG_ptr, compA_ptr, nb_pixels) {
compG_ptr >>= 2;
compA_ptr >>= 2;
const imageData = Module.imageData = new Uint8ClampedArray(nb_pixels * 4);
const compG = HEAP32.subarray(compG_ptr, compG_ptr + nb_pixels);
const compA = HEAP32.subarray(compA_ptr, compA_ptr + nb_pixels);
for (let i = 0; i < nb_pixels; i++) {
imageData[4 * i] = imageData[4 * i + 1] = imageData[4 * i + 2] = compG[i];
imageData[4 * i + 3] = compA[i];
}
}
function _jsPrintWarning(message_ptr) {
const message = UTF8ToString(message_ptr);
(Module.warn || console.warn)(`OpenJPEG: ${message}`);
}
function _rgb_to_rgba(compR_ptr, compG_ptr, compB_ptr, nb_pixels) {
compR_ptr >>= 2;
compG_ptr >>= 2;
compB_ptr >>= 2;
const imageData = Module.imageData = new Uint8ClampedArray(nb_pixels * 4);
const compR = HEAP32.subarray(compR_ptr, compR_ptr + nb_pixels);
const compG = HEAP32.subarray(compG_ptr, compG_ptr + nb_pixels);
const compB = HEAP32.subarray(compB_ptr, compB_ptr + nb_pixels);
for (let i = 0; i < nb_pixels; i++) {
imageData[4 * i] = compR[i];
imageData[4 * i + 1] = compG[i];
imageData[4 * i + 2] = compB[i];
imageData[4 * i + 3] = 255;
}
}
function _storeErrorMessage(message_ptr) {
const message = UTF8ToString(message_ptr);
if (!Module.errorMessages) {
Module.errorMessages = message;
} else {
Module.errorMessages += "\n" + message;
}
}
var writeArrayToMemory = (array, buffer) => {
HEAP8.set(array, buffer);
};
if (Module["noExitRuntime"]) noExitRuntime = Module["noExitRuntime"];
if (Module["print"]) out = Module["print"];
if (Module["printErr"]) err = Module["printErr"];
if (Module["wasmBinary"]) wasmBinary = Module["wasmBinary"];
if (Module["arguments"]) arguments_ = Module["arguments"];
if (Module["thisProgram"]) thisProgram = Module["thisProgram"];
if (Module["preInit"]) {
if (typeof Module["preInit"] == "function") Module["preInit"] = [Module["preInit"]];
while (Module["preInit"].length > 0) {
Module["preInit"].shift()();
}
}
Module["writeArrayToMemory"] = writeArrayToMemory;
var _malloc, _free, _jp2_decode, __emscripten_timeout, memory, __indirect_function_table, wasmMemory;
function assignWasmExports(wasmExports) {
_malloc = Module["_malloc"] = wasmExports["t"];
_free = Module["_free"] = wasmExports["u"];
_jp2_decode = Module["_jp2_decode"] = wasmExports["v"];
__emscripten_timeout = wasmExports["w"];
memory = wasmMemory = wasmExports["r"];
__indirect_function_table = wasmExports["__indirect_function_table"];
}
var wasmImports = {
m: __abort_js,
l: __emscripten_runtime_keepalive_clear,
i: __setitimer_js,
f: _copy_pixels_1,
e: _copy_pixels_3,
d: _copy_pixels_4,
j: _emscripten_resize_heap,
o: _environ_get,
p: _environ_sizes_get,
n: _fd_seek,
b: _fd_write,
q: _gray_to_rgba,
h: _graya_to_rgba,
c: _jsPrintWarning,
k: _proc_exit,
g: _rgb_to_rgba,
a: _storeErrorMessage
};
function run() {
preRun();
function doRun() {
Module["calledRun"] = true;
if (ABORT) return;
initRuntime();
readyPromiseResolve?.(Module);
Module["onRuntimeInitialized"]?.();
postRun();
}
if (Module["setStatus"]) {
Module["setStatus"]("Running...");
setTimeout(() => {
setTimeout(() => Module["setStatus"](""), 1);
doRun();
}, 1);
} else {
doRun();
}
}
var wasmExports;
wasmExports = await createWasm();
run();
if (runtimeInitialized) {
moduleRtn = Module;
} else {
moduleRtn = new Promise((resolve, reject) => {
readyPromiseResolve = resolve;
readyPromiseReject = reject;
});
}
return moduleRtn;
}
/* harmony default export */ const openjpeg = (OpenJPEG);
;// ./src/core/stream.js
class Stream extends BaseStream {
constructor(arrayBuffer, start, length, dict) {
super();
this.bytes = arrayBuffer instanceof Uint8Array ? arrayBuffer : new Uint8Array(arrayBuffer);
this.start = start || 0;
this.pos = this.start;
this.end = start + length || this.bytes.length;
this.dict = dict;
}
get length() {
return this.end - this.start;
}
get isEmpty() {
return this.length === 0;
}
getByte() {
return this.pos >= this.end ? -1 : this.bytes[this.pos++];
}
getBytes(length) {
const pos = this.pos;
const endPos = !length ? this.end : Math.min(pos + length, this.end);
this.pos = endPos;
return this.bytes.subarray(pos, endPos);
}
getByteRange(begin, end) {
if (begin < 0) {
begin = 0;
}
if (end > this.end) {
end = this.end;
}
return this.bytes.subarray(begin, end);
}
reset() {
this.pos = this.start;
}
moveStart() {
this.start = this.pos;
}
makeSubStream(start, length, dict = null) {
return new Stream(this.bytes.buffer, start, length, dict);
}
clone() {
return new Stream(this.bytes.buffer, this.start, this.length, this.dict?.clone());
}
}
class StringStream extends Stream {
constructor(str, dict = null) {
super(stringToBytes(str), NaN, NaN, dict);
}
}
class NullStream extends Stream {
constructor() {
super(new Uint8Array(0));
}
}
;// ./src/core/jpx.js
class JpxError extends BaseException {
constructor(msg) {
super(msg, "JpxError");
}
}
class JpxImage extends WasmImage {
_filename = "openjpeg.wasm";
_noWasmFilename = "openjpeg_nowasm_fallback.js";
static get instance() {
return shadow(this, "instance", new JpxImage(true));
}
async decode(bytes, {
numComponents = 4,
isIndexedColormap = false,
smaskInData = false,
reducePower = 0
} = {}) {
const module = await this._getModule(openjpeg);
if (!module) {
throw new JpxError("OpenJPEG failed to initialize");
}
let ptr;
try {
const size = bytes.length;
ptr = module._malloc(size);
module.writeArrayToMemory(bytes, ptr);
const ret = module._jp2_decode(ptr, size, numComponents > 0 ? numComponents : 0, !!isIndexedColormap, !!smaskInData, reducePower);
if (ret) {
const {
errorMessages
} = module;
if (errorMessages) {
delete module.errorMessages;
throw new JpxError(errorMessages);
}
throw new JpxError("Unknown error");
}
const {
imageData
} = module;
module.imageData = null;
return imageData;
} finally {
if (ptr) {
module._free(ptr);
}
}
}
static parseImageProperties(stream) {
if (stream instanceof ArrayBuffer || ArrayBuffer.isView(stream)) {
stream = new Stream(stream);
} else {
throw new JpxError("Invalid data format, must be a TypedArray.");
}
let newByte = stream.getByte();
while (newByte >= 0) {
const oldByte = newByte;
newByte = stream.getByte();
const code = oldByte << 8 | newByte;
if (code === 0xff51) {
stream.skip(4);
const Xsiz = stream.getInt32() >>> 0;
const Ysiz = stream.getInt32() >>> 0;
const XOsiz = stream.getInt32() >>> 0;
const YOsiz = stream.getInt32() >>> 0;
stream.skip(16);
const Csiz = stream.getUint16();
return {
width: Xsiz - XOsiz,
height: Ysiz - YOsiz,
bitsPerComponent: 8,
componentsCount: Csiz
};
}
}
throw new JpxError("No size marker found in JPX stream");
}
}
;// ./src/pdf.image_decoders.js
globalThis.pdfjsImageDecoders = {
getVerbosityLevel: getVerbosityLevel,
Jbig2Error: Jbig2Error,
Jbig2Image: JBig2CCITTFaxImage,
JpegError: JpegError,
JpegImage: JpegImage,
JpxError: JpxError,
JpxImage: JpxImage,
setVerbosityLevel: setVerbosityLevel,
VerbosityLevel: VerbosityLevel
};
export { Jbig2Error, JBig2CCITTFaxImage as Jbig2Image, JpegError, JpegImage, JpxError, JpxImage, VerbosityLevel, getVerbosityLevel, setVerbosityLevel };
//# sourceMappingURL=pdf.image_decoders.mjs.map