fix: rest of imagemagick formats

fixed over 35 formats in past few commits because i did a stupid (setting bit depth to "auto" apparently breaks 30 formats, but not all). also clamp sizes for certain formats

src/lib/converters/magick/magick.svelte.ts

@@ -234,7 +234,7 @@ export class MagickConverter extends Converter {
 			default: "auto",
 			options: [
 				{ value: "auto", label: "Auto" },
-				{ value: "custom", label: "Custom" },
+				// { value: "custom", label: "Custom" },
 				{ value: "8", label: "8-bit" },
 				{ value: "16", label: "16-bit" },
 				{ value: "32", label: "32-bit" },

src/lib/workers/magick.ts

@@ -339,8 +339,14 @@ const magickConvert = async (
 		}
 	}
 
-	if (fmt === "ICO" && !singleSize) {
+	const icons = ["ICO", "ICON", "CUR"]; // TODO: icns (1024x1024 max)
-		const standardSizes = [16, 24, 32, 48, 64, 128, 256, 512];
+	if (icons.includes(fmt)) {
+		if (singleSize) {
+			// clamp to 256x256
+			clampRes(img, 256);
+		} else {
+			// generate all standard sizes for icons
+			const standardSizes = [16, 24, 32, 48, 64, 128, 256];
 
 			let desired = 0;
 			if (resolution && resolution !== "auto") {
@@ -376,12 +382,17 @@ const magickConvert = async (
 					for (const size of sizes) {
 						const variant = MagickImage.create(
 							sourcePng,
-						new MagickReadSettings({ format: MagickFormat.Png }),
+							new MagickReadSettings({
+								format: MagickFormat.Png,
+							}),
 						);
 
 						const scale =
 							size / Math.max(variant.width, variant.height);
-					const newW = Math.max(1, Math.round(variant.width * scale));
+						const newW = Math.max(
+							1,
+							Math.round(variant.width * scale),
+						);
 						const newH = Math.max(
 							1,
 							Math.round(variant.height * scale),
@@ -403,19 +414,20 @@ const magickConvert = async (
 				});
 			});
 		}
+	} else if (fmt === "RGF") clampRes(img, 254); // max 254x254
 
 	const result = await new Promise<Uint8Array>((resolve, reject) => {
 		try {
 			// quality, depth, colorSpace, transparency, metadata
 			const quality = conversionSettings.quality as number;
-			const bitDepth = conversionSettings.depth as number;
+			const bitDepth = conversionSettings.depth;
 			const colorSpace = conversionSettings.colorSpace as string;
 			const transparency = conversionSettings.transparency as boolean;
 			const metadata = conversionSettings.metadata as boolean;
 
 			// magick-wasm automatically clamps (https://github.com/dlemstra/magick-wasm/blob/76fc6f2b0c0497d2ddc251bbf6174b4dc92ac3ea/src/magick-image.ts#L2480)
 			if (quality) img.quality = quality;
-			if (bitDepth) img.depth = bitDepth;
+			if (bitDepth !== "auto") img.depth = bitDepth;
 			if (!metadata) img.strip();
 			if (colorSpace) {
 				switch (colorSpace) {
@@ -462,6 +474,19 @@ const magickConvert = async (
 	return result;
 };
 
+const clampRes = (img: IMagickImage, maxSize: number) => {
+	const w = img.width;
+	const h = img.height;
+
+	if (w > maxSize || h > maxSize) {
+		const scale = maxSize / Math.max(w, h);
+		const newW = Math.max(1, Math.round(w * scale));
+		const newH = Math.max(1, Math.round(h * scale));
+
+		img.resize(newW, newH);
+	}
+};
+
 onmessage = async (e) => {
 	const message = e.data;
 	try {