Delete DitherImage.mjs

src/core/operations/DitherImage.mjs

@@ -1,87 +0,0 @@
-/**
- * @author j433866 [j433866@gmail.com]
- * @copyright Crown Copyright 2019
- * @license Apache-2.0
- */
-
-import Operation from "../Operation.mjs";
-import OperationError from "../errors/OperationError.mjs";
-import { isImage } from "../lib/FileType.mjs";
-import { toBase64 } from "../lib/Base64.mjs";
-import { isWorkerEnvironment } from "../Utils.mjs";
-import jimp from "jimp";
-
-/**
- * Image Dither operation
- */
-class DitherImage extends Operation {
-
-    /**
-     * DitherImage constructor
-     */
-    constructor() {
-        super();
-
-        this.name = "Dither Image";
-        this.module = "Image";
-        this.description = "Apply a dither effect to an image.";
-        this.infoURL = "https://wikipedia.org/wiki/Dither";
-        this.inputType = "ArrayBuffer";
-        this.outputType = "ArrayBuffer";
-        this.presentType = "html";
-        this.args = [];
-    }
-
-    /**
-     * @param {ArrayBuffer} input
-     * @param {Object[]} args
-     * @returns {byteArray}
-     */
-    async run(input, args) {
-        if (!isImage(input)) {
-            throw new OperationError("Invalid file type.");
-        }
-
-        let image;
-        try {
-            image = await jimp.read(input);
-        } catch (err) {
-            throw new OperationError(`Error loading image. (${err})`);
-        }
-        try {
-            if (isWorkerEnvironment())
-                self.sendStatusMessage("Applying dither to image...");
-            image.dither565();
-
-            let imageBuffer;
-            if (image.getMIME() === "image/gif") {
-                imageBuffer = await image.getBufferAsync(jimp.MIME_PNG);
-            } else {
-                imageBuffer = await image.getBufferAsync(jimp.AUTO);
-            }
-            return imageBuffer.buffer;
-        } catch (err) {
-            throw new OperationError(`Error applying dither to image. (${err})`);
-        }
-    }
-
-    /**
-     * Displays the dithered image using HTML for web apps
-     * @param {ArrayBuffer} data
-     * @returns {html}
-     */
-    present(data) {
-        if (!data.byteLength) return "";
-        const dataArray = new Uint8Array(data);
-
-        const type = isImage(dataArray);
-        if (!type) {
-            throw new OperationError("Invalid file type.");
-        }
-
-        return `<img src="data:${type};base64,${toBase64(dataArray)}">`;
-    }
-
-}
-
-export default DitherImage;