feat: imagemagick conversion

src/app.css

@@ -31,7 +31,8 @@ body {
 	}
 
 	.btn {
-		@apply font-display flex items-center justify-center overflow-hidden relative cursor-pointer px-4 border-2 border-solid bg-background border-foreground-muted-alt rounded-xl p-2 focus:!outline-none hover:scale-105 transition-all duration-200 active:scale-95;
+		@apply font-display flex items-center justify-center overflow-hidden relative cursor-pointer px-4 border-2 border-solid bg-background border-foreground-muted-alt rounded-xl p-2 focus:!outline-none hover:scale-105 duration-200 active:scale-95 disabled:opacity-50 disabled:pointer-events-none;
+		transition: opacity 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
 	}
 
 	.btn-highlight {

src/lib/components/functional/Dropdown.svelte

@@ -52,7 +52,7 @@
 		onclick={toggle}
 	>
 		<!-- <p>{selected}</p> -->
-		<div class="grid grid-cols-1 grid-rows-1 w-fit">
+		<div class="grid grid-cols-1 grid-rows-1 w-fit text-left flex-grow-0">
 			{#key selected}
 				<p
 					in:blur={{
@@ -60,11 +60,11 @@
 						easing: quintOut,
 						blurMultiplier: 6,
 						scale: {
-							start: 0.5,
+							start: 0.9,
 							end: 1,
 						},
 						y: {
-							start: isUp ? 50 : -50,
+							start: isUp ? -50 : 50,
 							end: 0,
 						},
 					}}
@@ -74,11 +74,11 @@
 						blurMultiplier: 6,
 						scale: {
 							start: 1,
-							end: 0.5,
+							end: 0.9,
 						},
 						y: {
 							start: 0,
-							end: isUp ? -50 : 50,
+							end: isUp ? 50 : -50,
 						},
 					}}
 					class="col-start-1 row-start-1 text-left"
@@ -87,7 +87,9 @@
 				</p>
 			{/key}
 			{#each options as option}
-				<p class="col-start-1 row-start-1 opacity-0">
+				<p
+					class="col-start-1 row-start-1 invisible pointer-events-none"
+				>
 					{option}
 				</p>
 			{/each}

src/lib/converters/converter.svelte.ts

@@ -17,6 +17,7 @@ export class Converter {
 	 * @param input The input file.
 	 * @param to The format to convert to. Includes the dot.
 	 */
+	public ready: boolean = $state(false);
 	public async convert(
 		// eslint-disable-next-line @typescript-eslint/no-unused-vars
 		input: OmitBetterStrict<IFile, "extension">,

src/lib/converters/index.ts

@@ -1,3 +1,4 @@
-import { VipsConverter } from "./vips";
+import { MagickConverter } from "./magick.svelte";
+import { VipsConverter } from "./vips.svelte";
 
-export const converters = [new VipsConverter()];
+export const converters = [new VipsConverter(), new MagickConverter()];

src/lib/converters/magick.svelte.ts

@@ -0,0 +1,73 @@
+import type { IFile } from "$lib/types";
+import { Converter } from "./converter.svelte";
+import MagickWorker from "$lib/workers/magick?worker";
+import { browser } from "$app/environment";
+import type { WorkerMessage, OmitBetterStrict } from "$lib/types";
+import { MagickFormat } from "@imagemagick/magick-wasm";
+
+export class MagickConverter extends Converter {
+	private worker: Worker = browser ? new MagickWorker() : null!;
+	private id = 0;
+	public name = "imagemagick";
+	public ready = $state(false);
+	public supportedFormats = Object.keys(MagickFormat).map(
+		(key) => `.${key.toLowerCase()}`,
+	);
+
+	constructor() {
+		super();
+		if (!browser) return;
+		this.worker.onmessage = (e) => {
+			const message: WorkerMessage = e.data;
+			if (message.type === "loaded") this.ready = true;
+		};
+	}
+
+	public async convert(
+		input: OmitBetterStrict<IFile, "extension">,
+		to: string,
+	): Promise<IFile> {
+		const res = await this.sendMessage({
+			type: "convert",
+			input: input as unknown as IFile,
+			to,
+		});
+
+		if (res.type === "finished") {
+			return res.output;
+		}
+
+		if (res.type === "error") {
+			throw new Error(res.error);
+		}
+
+		throw new Error("Unknown message type");
+	}
+
+	private sendMessage(
+		message: OmitBetterStrict<WorkerMessage, "id">,
+	): Promise<OmitBetterStrict<WorkerMessage, "id">> {
+		const id = this.id++;
+		let resolved = false;
+		return new Promise((resolve) => {
+			const onMessage = (e: MessageEvent) => {
+				if (e.data.id === id) {
+					this.worker.removeEventListener("message", onMessage);
+					resolve(e.data);
+					resolved = true;
+				}
+			};
+
+			setTimeout(() => {
+				if (!resolved) {
+					this.worker.removeEventListener("message", onMessage);
+					throw new Error("Timeout");
+				}
+			}, 60000);
+
+			this.worker.addEventListener("message", onMessage);
+
+			this.worker.postMessage({ ...message, id });
+		});
+	}
+}

src/lib/converters/vips.svelte.ts

@@ -1,30 +1,39 @@
 import type { IFile } from "$lib/types";
-import { Converter } from "./converter";
+import { Converter } from "./converter.svelte";
 import VipsWorker from "$lib/workers/vips?worker";
 import { browser } from "$app/environment";
-import type { VipsWorkerMessage, OmitBetterStrict } from "$lib/types";
+import type { WorkerMessage, OmitBetterStrict } from "$lib/types";
 
 export class VipsConverter extends Converter {
 	private worker: Worker = browser ? new VipsWorker() : null!;
 	private id = 0;
 	public name = "libvips";
+	public ready = $state(false);
 	public supportedFormats = [
-		".jpg",
-		".jpeg",
-		".png",
-		".webp",
-		".tiff",
-		".tif",
 		".gif",
-		".jfif",
+		".hdr",
-		".avif",
+		".jpe",
+		".jpeg",
+		".jpg",
+		".mat",
+		".pbm",
+		".pfm",
+		".pgm",
+		".png",
+		".pnm",
+		".ppm",
+		".raw",
+		".tif",
+		".tiff",
+		".webp",
 	];
 
 	constructor() {
 		super();
 		if (!browser) return;
 		this.worker.onmessage = (e) => {
-			console.log(e.data);
+			const message: WorkerMessage = e.data;
+			if (message.type === "loaded") this.ready = true;
 		};
 	}
 
@@ -42,12 +51,16 @@ export class VipsConverter extends Converter {
 			return res.output;
 		}
 
+		if (res.type === "error") {
+			throw new Error(res.error);
+		}
+
 		throw new Error("Unknown message type");
 	}
 
 	private sendMessage(
-		message: OmitBetterStrict<VipsWorkerMessage, "id">,
+		message: OmitBetterStrict<WorkerMessage, "id">,
-	): Promise<OmitBetterStrict<VipsWorkerMessage, "id">> {
+	): Promise<OmitBetterStrict<WorkerMessage, "id">> {
 		const id = this.id++;
 		let resolved = false;
 		return new Promise((resolve) => {
@@ -64,7 +77,7 @@ export class VipsConverter extends Converter {
 					this.worker.removeEventListener("message", onMessage);
 					throw new Error("Timeout");
 				}
-			}, 20000);
+			}, 60000);
 
 			this.worker.addEventListener("message", onMessage);
 

src/lib/types/conversion-worker.ts

@@ -0,0 +1,30 @@
+import type { IFile } from "./file";
+
+interface ConvertMessage {
+	type: "convert";
+	input: IFile;
+	to: string;
+}
+
+interface FinishedMessage {
+	type: "finished";
+	output: IFile;
+}
+
+interface LoadedMessage {
+	type: "loaded";
+}
+
+interface ErrorMessage {
+	type: "error";
+	error: string;
+}
+
+export type WorkerMessage = (
+	| ConvertMessage
+	| FinishedMessage
+	| LoadedMessage
+	| ErrorMessage
+) & {
+	id: number;
+};

src/lib/types/index.ts

@@ -1,3 +1,3 @@
 export * from "./file";
 export * from "./util";
-export * from "./vips-worker";
+export * from "./conversion-worker";

src/lib/types/vips-worker.ts

@@ -1,16 +0,0 @@
-import type { IFile } from "./file";
-
-interface VipsConvertMessage {
-	type: "convert";
-	input: IFile;
-	to: string;
-}
-
-interface VipsFinishedMessage {
-	type: "finished";
-	output: IFile;
-}
-
-export type VipsWorkerMessage = (VipsConvertMessage | VipsFinishedMessage) & {
-	id: number;
-};

src/lib/workers/magick.ts

@@ -0,0 +1,79 @@
+import type { WorkerMessage, OmitBetterStrict } from "$lib/types";
+import {
+	ImageMagick,
+	initializeImageMagick,
+	MagickFormat,
+} from "@imagemagick/magick-wasm";
+import wasmUrl from "@imagemagick/magick-wasm/magick.wasm?url";
+
+console.log(wasmUrl);
+
+const magickPromise = fetch(wasmUrl)
+	.then((r) => r.arrayBuffer())
+	.then((r) => initializeImageMagick(r));
+
+magickPromise
+	.then(() => {
+		postMessage({ type: "loaded" });
+	})
+	.catch((error) => {
+		postMessage({ type: "error", error });
+	});
+
+const handleMessage = async (
+	message: WorkerMessage,
+): Promise<OmitBetterStrict<WorkerMessage, "id"> | undefined> => {
+	await magickPromise;
+	switch (message.type) {
+		case "convert": {
+			if (!message.to.startsWith(".")) message.to = `.${message.to}`;
+			message.to = message.to.slice(1);
+
+			// unfortunately this lib uses some hacks to dispose images when the promise is resolved
+			// this means we can't promisify it :(
+			return new Promise((resolve) => {
+				ImageMagick.read(
+					new Uint8Array(message.input.buffer),
+					(img) => {
+						const keys = Object.keys(MagickFormat);
+						const values = Object.values(MagickFormat);
+						const index = keys.findIndex(
+							(key) =>
+								key.toLowerCase() === message.to.toLowerCase(),
+						);
+						const format = values[index];
+						img.write(format, (output) => {
+							resolve({
+								type: "finished",
+								output: {
+									...message.input,
+									buffer: output,
+									extension: message.to,
+								},
+							});
+						});
+						img.dispose();
+					},
+				);
+			});
+		}
+	}
+};
+
+onmessage = async (e) => {
+	const message: WorkerMessage = e.data;
+	try {
+		const res = await handleMessage(message);
+		if (!res) return;
+		postMessage({
+			...res,
+			id: message.id,
+		});
+	} catch (e) {
+		postMessage({
+			type: "error",
+			error: e,
+			id: message.id,
+		});
+	}
+};

src/lib/workers/vips.ts

@@ -1,7 +1,10 @@
-import type { VipsWorkerMessage, OmitBetterStrict } from "$lib/types";
+import type { WorkerMessage, OmitBetterStrict } from "$lib/types";
 import Vips from "wasm-vips";
 
-const vipsPromise = Vips();
+const vipsPromise = Vips({
+	// see https://github.com/kleisauke/wasm-vips/issues/85
+	dynamicLibraries: [],
+});
 
 vipsPromise
 	.then(() => {
@@ -12,8 +15,8 @@ vipsPromise
 	});
 
 const handleMessage = async (
-	message: VipsWorkerMessage,
+	message: WorkerMessage,
-): Promise<OmitBetterStrict<VipsWorkerMessage, "id"> | undefined> => {
+): Promise<OmitBetterStrict<WorkerMessage, "id"> | undefined> => {
 	const vips = await vipsPromise;
 	switch (message.type) {
 		case "convert": {
@@ -34,11 +37,19 @@ const handleMessage = async (
 };
 
 onmessage = async (e) => {
-	const message: VipsWorkerMessage = e.data;
+	const message: WorkerMessage = e.data;
-	const res = await handleMessage(message);
+	try {
-	if (!res) return;
+		const res = await handleMessage(message);
-	postMessage({
+		if (!res) return;
-		...res,
+		postMessage({
-		id: message.id,
+			...res,
-	});
+			id: message.id,
+		});
+	} catch (e) {
+		postMessage({
+			type: "error",
+			error: e,
+			id: message.id,
+		});
+	}
 };

src/routes/convert/+page.svelte

@@ -33,29 +33,34 @@
 	});
 
 	const convertAll = async () => {
-		// for (let i = 0; i < files.files.length; i++) {
+		// if (!converter.ready) return;
-		// 	const file = files.files[i];
+		// const workingFormats: string[] = [];
-		// 	const to = files.conversionTypes[i];
+		// try {
-		// 	const converter = converters.find(
+		// 	await Promise.all(
-		// 		(c) => c.name === files.conversionTypes[i],
+		// 		converter.supportedFormats.map(async (format) => {
-		// 	);
+		// 			try {
-		// 	if (!converter) {
+		// 				const img = files.files[0];
-		// 		console.error("Converter not found");
+		// 				if (!img) return;
-		// 		continue;
+		// 				console.log(`Converting to ${format}`);
-		// 	}
+		// 				await converter.convert(
-		// 	const converted = await converter.convert({
+		// 					{
-		// 		name: file.file.name,
+		// 						name: img.file.name,
-		// 		buffer: await file.file.arrayBuffer(),
+		// 						buffer: await img.file.arrayBuffer(),
-		// 	}, to);
+		// 					},
-		// 	files.files[i] = {
+		// 					format,
-		// 		...file,
+		// 				);
-		// 		file: new File([converted.buffer], file.file.name, {
+		// 				console.log(`Converted to ${format}`);
-		// 			type: file.file.type,
+		// 				workingFormats.push(format);
+		// 			} catch (e: any) {
+		// 				console.error(e);
+		// 			}
 		// 		}),
-		// 		blobUrl: URL.createObjectURL(new Blob([converted.buffer], { type: file.file.type })),
+		// 	);
-		// 	};
+		// } catch {
+		// 	console.error("Failed to convert to any format");
 		// }
-
+		// console.log(workingFormats);
+		// return;
 		const promises: Promise<void>[] = [];
 		for (let i = 0; i < files.files.length; i++) {
 			const file = files.files[i];
@@ -187,6 +192,15 @@
 								(converter) => converter.name,
 							)}
 							bind:selected={converterName}
+							onselect={() => {
+								files.files.forEach((file) => {
+									file.result = null;
+								});
+								files.conversionTypes = Array.from(
+									{ length: files.files.length },
+									() => converter.supportedFormats[0],
+								);
+							}}
 						/>
 					</div>
 				</div>
@@ -197,15 +211,21 @@
 						class={clsx("btn flex-grow", {
 							"btn-highlight": disabled,
 						})}
-						>Convert{files.files.length > 1 ? " All" : ""}</button
+						disabled={!converter.ready}
 					>
+						{#if converter.ready}
+							Convert {files.files.length > 1 ? "All" : ""}
+						{:else}
+							Loading...
+						{/if}
+					</button>
 					<button
 						onclick={downloadAll}
 						class={clsx("btn flex-grow", {
-							"opacity-50 pointer-events-none": disabled,
 							"btn-highlight": !disabled,
 						})}
-						>Download{files.files.length > 1 ? " All" : ""}</button
+						{disabled}
+						>Download {files.files.length > 1 ? "All" : ""}</button
 					>
 				</div>
 			</div>
@@ -289,6 +309,10 @@
 										files.files = files.files.filter(
 											(f) => f !== file,
 										);
+										files.conversionTypes =
+											files.conversionTypes.filter(
+												(_, j) => j !== i,
+											);
 									}}
 									class="ml-2 mr-1"
 								>