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a6988582d2
*Note:* This is similar to PR 19525, which did the same thing for the OpenJPEG decoder. The advantages of doing this are: - The same JBig2 decoder is used regardless of WASM being supported or not, which means consistent rendering. - The old `Jbig2Image` implementation has various bugs and missing features. - Less code that needs to be maintained in the PDF.js project, since both the CCITT and the JBig2 decoder is replaced. The disadvantage of doing this is: - Slightly larger bundle size, however the effect is limited since a fair amount of PDF.js code can be removed. For the `gulp mozcentral` target the size increase is approximately 54 kilo-bytes (which is small compared to the 452 kilo-bytes for the JS version of the OpenJPEG decoder).
58 lines
1.8 KiB
JavaScript
58 lines
1.8 KiB
JavaScript
/* Copyright 2023 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import {
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getVerbosityLevel,
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setVerbosityLevel,
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VerbosityLevel,
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} from "../../src/shared/util.js";
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import {
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Jbig2Error,
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JBig2CCITTFaxImage as Jbig2Image,
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} from "../../src/core/jbig2_ccittFax.js";
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import { JpegError, JpegImage } from "../../src/core/jpg.js";
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import { JpxError, JpxImage } from "../../src/core/jpx.js";
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const expectedAPI = Object.freeze({
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getVerbosityLevel,
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Jbig2Error,
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Jbig2Image,
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JpegError,
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JpegImage,
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JpxError,
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JpxImage,
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setVerbosityLevel,
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VerbosityLevel,
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});
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describe("pdfimage_api", function () {
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it("checks that the *official* PDF.js-image decoders API exposes the expected functionality", async function () {
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// eslint-disable-next-line no-unsanitized/method
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const pdfimageAPI = await import(
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typeof PDFJSDev !== "undefined" && PDFJSDev.test("LIB")
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? "../../pdf.image_decoders.js"
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: "../../src/pdf.image_decoders.js"
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);
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// The imported Object contains an (automatically) inserted Symbol,
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// hence we copy the data to allow using a simple comparison below.
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expect({ ...pdfimageAPI }).toEqual(expectedAPI);
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expect(Object.keys(globalThis.pdfjsImageDecoders).sort()).toEqual(
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Object.keys(expectedAPI).sort()
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);
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});
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});
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