From 2b2c9146c2383706d2acf7190f01fb0a46b157da Mon Sep 17 00:00:00 2001
From: not-nullptr <62841684+not-nullptr@users.noreply.github.com>
Date: Mon, 14 Apr 2025 11:52:13 +0100
Subject: [PATCH] feat: .dng support

---
 bun.lock                          |  4 +--
 package.json                      |  2 +-
 src/lib/converters/vips.svelte.ts |  1 +
 src/lib/workers/vips.ts           | 52 +++++++++++++++++++++++++++++++
 4 files changed, 56 insertions(+), 3 deletions(-)

diff --git a/bun.lock b/bun.lock
index 0ec2c3e..667bac1 100644
--- a/bun.lock
+++ b/bun.lock
@@ -10,7 +10,7 @@
         "@fontsource/azeret-mono": "^5.1.1",
         "@fontsource/lexend": "^5.1.2",
         "@fontsource/radio-canada-big": "^5.1.1",
-        "@imagemagick/magick-wasm": "^0.0.32",
+        "@imagemagick/magick-wasm": "^0.0.34",
         "client-zip": "^2.4.6",
         "clsx": "^2.1.1",
         "lucide-svelte": "^0.475.0",
@@ -132,7 +132,7 @@
 
     "@humanwhocodes/retry": ["@humanwhocodes/retry@0.4.2", "", {}, "sha512-xeO57FpIu4p1Ri3Jq/EXq4ClRm86dVF2z/+kvFnyqVYRavTZmaFaUBbWCOuuTh0o/g7DSsk6kc2vrS4Vl5oPOQ=="],
 
-    "@imagemagick/magick-wasm": ["@imagemagick/magick-wasm@0.0.32", "", {}, "sha512-+niNRuJk4ZPE9PDzBg19Kjyl+CEdAgaJBXQSFXmO1CTDoYOxrZ3DBdstfs1+8r77hjoiph+4Wu4qpldfcrKm7A=="],
+    "@imagemagick/magick-wasm": ["@imagemagick/magick-wasm@0.0.34", "", {}, "sha512-vSTe4cfR8U8r2Ityo6s3iRFVK903W4fhur3t/ixc6vLSAJXmqXC9cKXz2NkkDBUVU7ssJTYMiTKAb1S9RY+ZdQ=="],
 
     "@isaacs/cliui": ["@isaacs/cliui@8.0.2", "", { "dependencies": { "string-width": "^5.1.2", "string-width-cjs": "npm:string-width@^4.2.0", "strip-ansi": "^7.0.1", "strip-ansi-cjs": "npm:strip-ansi@^6.0.1", "wrap-ansi": "^8.1.0", "wrap-ansi-cjs": "npm:wrap-ansi@^7.0.0" } }, "sha512-O8jcjabXaleOG9DQ0+ARXWZBTfnP4WNAqzuiJK7ll44AmxGKv/J2M4TPjxjY3znBCfvBXFzucm1twdyFybFqEA=="],
 
diff --git a/package.json b/package.json
index 4ca2138..efed84e 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
 		"@fontsource/azeret-mono": "^5.1.1",
 		"@fontsource/lexend": "^5.1.2",
 		"@fontsource/radio-canada-big": "^5.1.1",
-		"@imagemagick/magick-wasm": "^0.0.32",
+		"@imagemagick/magick-wasm": "^0.0.34",
 		"client-zip": "^2.4.6",
 		"clsx": "^2.1.1",
 		"lucide-svelte": "^0.475.0",
diff --git a/src/lib/converters/vips.svelte.ts b/src/lib/converters/vips.svelte.ts
index 663ec01..031d4b4 100644
--- a/src/lib/converters/vips.svelte.ts
+++ b/src/lib/converters/vips.svelte.ts
@@ -23,6 +23,7 @@ export class VipsConverter extends Converter {
 		".gif",
 		".hdr",
 		".jpe",
+		".dng",
 		".mat",
 		".pbm",
 		".pfm",
diff --git a/src/lib/workers/vips.ts b/src/lib/workers/vips.ts
index cdfe5d5..42e6054 100644
--- a/src/lib/workers/vips.ts
+++ b/src/lib/workers/vips.ts
@@ -1,10 +1,24 @@
 import Vips from "wasm-vips";
+import {
+	initializeImageMagick,
+	MagickFormat,
+	MagickImage,
+	MagickReadSettings,
+} from "@imagemagick/magick-wasm";
+import wasm from "@imagemagick/magick-wasm/magick.wasm?url";
 
 const vipsPromise = Vips({
 	dynamicLibraries: [],
 });
 
+const magickPromise = initializeImageMagick(new URL(wasm, import.meta.url));
+
+const magickRequiredFormats = [".dng"];
+const unsupportedFrom: string[] = [];
+const unsupportedTo = [".dng"];
+
 vipsPromise
+	.then(() => magickPromise)
 	.then(() => {
 		postMessage({ type: "loaded" });
 	})
@@ -18,7 +32,45 @@ const handleMessage = async (message: any): Promise<any> => {
 	switch (message.type) {
 		case "convert": {
 			if (!message.to.startsWith(".")) message.to = `.${message.to}`;
+			if (unsupportedFrom.includes(message.input.from)) {
+				return {
+					type: "error",
+					error: `Unsupported input format ${message.input.from}`,
+				};
+			}
+
+			if (unsupportedTo.includes(message.to)) {
+				return {
+					type: "error",
+					error: `Unsupported output format ${message.to}`,
+				};
+			}
+
 			const buffer = await message.input.file.arrayBuffer();
+			if (
+				magickRequiredFormats.includes(message.input.from) ||
+				magickRequiredFormats.includes(message.to)
+			) {
+				const magick = MagickImage.create(
+					new Uint8Array(buffer),
+					new MagickReadSettings({
+						format: message.input.from
+							.slice(1)
+							.toUpperCase() as MagickFormat,
+					}),
+				);
+
+				const dngBuffer = await new Promise<Uint8Array>((resolve) =>
+					magick.write(message.to.slice(1).toUpperCase(), (data) => {
+						resolve(data);
+					}),
+				);
+
+				return {
+					type: "finished",
+					output: dngBuffer,
+				};
+			}
 			let image = vips.Image.newFromBuffer(buffer, "");
 
 			// check if animated image & keep it animated when converting