Add support for RealMedia (#740)

Author: matt-oakes

core.js

@@ -1021,6 +1021,15 @@ export class FileTypeParser {
 			};
 		}
 
+		if (this.checkString('.RMF')) {
+			return {
+				ext: 'rm',
+				mime: 'application/vnd.rn-realmedia',
+			};
+		}
+
+		// -- 5-byte signatures --
+
 		if (this.checkString('DRACO')) {
 			return {
 				ext: 'drc',

fixture/fixture-realmedia-audio.rm

@@ -234,7 +234,8 @@
 		"dotm",
 		"potm",
 		"pptm",
-		"jar"
+		"jar",
+		"rm"
 	],
 	"dependencies": {
 		"@tokenizer/inflate": "^0.2.6",

fixture/fixture-realmedia-video.rm

@@ -565,6 +565,7 @@ abortController.abort(); // Abort file-type reading from the Blob stream.
 - [`qcp`](https://en.wikipedia.org/wiki/QCP) - Tagged and chunked data
 - [`raf`](https://en.wikipedia.org/wiki/Raw_image_format) - Fujifilm RAW image file
 - [`rar`](https://en.wikipedia.org/wiki/RAR_(file_format)) - Archive file
+- [`rm`](https://en.wikipedia.org/wiki/RealMedia) - RealMedia
 - [`rpm`](https://fileinfo.com/extension/rpm) - Red Hat Package Manager file
 - [`rtf`](https://en.wikipedia.org/wiki/Rich_Text_Format) - Rich Text Format
 - [`rw2`](https://en.wikipedia.org/wiki/Raw_image_format) - Panasonic RAW image file

package.json

@@ -171,6 +171,7 @@ export const extensions = [
 	'potm',
 	'pptm',
 	'jar',
+	'rm',
 ];
 
 export const mimeTypes = [
@@ -341,4 +342,5 @@ export const mimeTypes = [
 	'application/vnd.ms-powerpoint.template.macroEnabled.12',
 	'application/vnd.ms-powerpoint.presentation.macroEnabled.12',
 	'application/java-archive',
+	'application/vnd.rn-realmedia',
 ];

readme.md

@@ -273,6 +273,10 @@ const names = {
 	lz4: [
 		'fixture',
 	],
+	rm: [
+		'fixture-realmedia-audio',
+		'fixture-realmedia-video',
+	],
 };
 
 // Define an entry here only if the file type has potential