Add @mediabunny/aac-encoder extension package

packages/aac-encoder/src/shared.ts

@@ -0,0 +1,66 @@
+/*!
+ * Copyright (c) 2026-present, Vanilagy and contributors
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+export type WorkerCommand = {
+	type: 'init';
+	data: {
+		numberOfChannels: number;
+		sampleRate: number;
+		bitrate: number;
+	};
+} | {
+	type: 'encode';
+	data: {
+		ctx: number;
+		audioData: ArrayBuffer;
+		timestamp: number;
+	};
+} | {
+	type: 'flush';
+	data: {
+		ctx: number;
+	};
+} | {
+	type: 'close';
+	data: {
+		ctx: number;
+	};
+};
+
+export type WorkerResponseData = {
+	type: 'init';
+	ctx: number;
+	frameSize: number;
+	extradata: ArrayBuffer;
+} | {
+	type: 'encode';
+	packets: Array<{
+		encodedData: ArrayBuffer;
+		pts: number;
+		duration: number;
+	}>;
+} | {
+	type: 'flush';
+	packets: Array<{
+		encodedData: ArrayBuffer;
+		pts: number;
+		duration: number;
+	}>;
+} | {
+	type: 'close';
+};
+
+export type WorkerResponse = {
+	id: number;
+} & ({
+	success: true;
+	data: WorkerResponseData;
+} | {
+	success: false;
+	error: unknown;
+});