Add support for format .drc, Google's Draco 3D Data Compression (#702)

sindresorhus · Dec 13, 2024 · e99257d · e99257d
1 parent e2f1a1c
commit e99257d
Show file tree

Hide file tree

Showing 6 changed files with 15 additions and 1 deletion.
diff --git a/core.js b/core.js
@@ -1056,6 +1056,13 @@ export class FileTypeParser {
 			};
 		}
 
+		if (this.checkString('DRACO')) {
+			return {
+				ext: 'drc',
+				mime: 'application/vnd.google.draco', // Invented by us
+			};
+		}
+
 		// -- 6-byte signatures --
 
 		if (this.check([0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00])) {

diff --git a/fixture/fixture-cube_pc.drc b/fixture/fixture-cube_pc.drc
diff --git a/package.json b/package.json
@@ -217,7 +217,8 @@
 		"fbx",
 		"vsdx",
 		"vtt",
-		"apk"
+		"apk",
+		"drc"
 	],
 	"dependencies": {
 		"strtok3": "^10.0.0",

diff --git a/readme.md b/readme.md
@@ -442,6 +442,7 @@ abortController.abort(); // Abort file-type reading from the Blob stream.
 - [`dmg`](https://en.wikipedia.org/wiki/Apple_Disk_Image) - Apple Disk Image
 - [`dng`](https://en.wikipedia.org/wiki/Digital_Negative) - Adobe Digital Negative image file
 - [`docx`](https://en.wikipedia.org/wiki/Office_Open_XML) - Microsoft Word document
+- [`drc`](https://en.wikipedia.org/wiki/Zstandard) - Google's Draco 3D Data Compression
 - [`dsf`](https://dsd-guide.com/sites/default/files/white-papers/DSFFileFormatSpec_E.pdf) - Sony DSD Stream File (DSF)
 - [`dwg`](https://en.wikipedia.org/wiki/.dwg) - Autodesk CAD file
 - [`elf`](https://en.wikipedia.org/wiki/Executable_and_Linkable_Format) - Unix Executable and Linkable Format

diff --git a/supported.js b/supported.js
@@ -154,6 +154,7 @@ export const extensions = [
 	'vsdx',
 	'vtt',
 	'apk',
+	'drc',
 ];
 
 export const mimeTypes = [
@@ -307,4 +308,5 @@ export const mimeTypes = [
 	'application/x.autodesk.fbx', // Invented by us
 	'application/vnd.visio',
 	'application/vnd.android.package-archive',
+	'application/vnd.google.draco', // Invented by us
 ];
diff --git a/test.js b/test.js
@@ -54,6 +54,9 @@ const names = {
 	dng: [
 		'fixture-Leica-M10',
 	],
+	drc: [
+		'fixture-cube_pc',
+	],
 	epub: [
 		'fixture',
 		'fixture-crlf',
-Original file line number
+Diff line change
@@ Expand Up / @@ -217,7 +217,8 @@ @@
     		"fbx",
     		"vsdx",
     		"vtt",
-    		"apk"
+    		"apk",
+    		"drc"
     	],
     	"dependencies": {
     		"strtok3": "^10.0.0",
@@ Expand Down @@