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Update JpxImage.parseImageProperties to support TypedArray data in IMAGE_DECODERS builds #17977

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Apr 22, 2024
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Update JpxImage.parseImageProperties to support TypedArray data in IMAGE_DECODERS builds #17977

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8 changes: 8 additions & 0 deletions src/core/jpx.js
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@

import { BaseException } from "../shared/util.js";
import OpenJPEG from "../../external/openjpeg/openjpeg.js";
import { Stream } from "./stream.js";

class JpxError extends BaseException {
constructor(msg) {
Expand All @@ -39,6 +40,13 @@ class JpxImage {
}

static parseImageProperties(stream) {
if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("IMAGE_DECODERS")) {
if (stream instanceof ArrayBuffer || ArrayBuffer.isView(stream)) {
stream = new Stream(stream);
} else {
throw new JpxError("Invalid data format, must be a TypedArray.");
}
}
// No need to use OpenJPEG here since we're only getting very basic
// information which are located in the first bytes of the file.
let newByte = stream.getByte();
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