Initial working version

node_modules/music-metadata/lib/ogg/vorbis/VorbisDecoder.js

@@ -0,0 +1,32 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.VorbisDecoder = void 0;
+const Token = require("token-types");
+class VorbisDecoder {
+    constructor(data, offset) {
+        this.data = data;
+        this.offset = offset;
+    }
+    readInt32() {
+        const value = Token.UINT32_LE.get(this.data, this.offset);
+        this.offset += 4;
+        return value;
+    }
+    readStringUtf8() {
+        const len = this.readInt32();
+        const value = Buffer.from(this.data).toString('utf-8', this.offset, this.offset + len);
+        this.offset += len;
+        return value;
+    }
+    parseUserComment() {
+        const offset0 = this.offset;
+        const v = this.readStringUtf8();
+        const idx = v.indexOf('=');
+        return {
+            key: v.slice(0, idx).toUpperCase(),
+            value: v.slice(idx + 1),
+            len: this.offset - offset0
+        };
+    }
+}
+exports.VorbisDecoder = VorbisDecoder;