feat: add tts stt

app/utils/audio.ts

@@ -0,0 +1,45 @@
+type TTSPlayer = {
+  init: () => void;
+  play: (audioBuffer: ArrayBuffer, onended: () => void | null) => Promise<void>;
+  stop: () => void;
+};
+
+export function createTTSPlayer(): TTSPlayer {
+  let audioContext: AudioContext | null = null;
+  let audioBufferSourceNode: AudioBufferSourceNode | null = null;
+
+  const init = () => {
+    audioContext = new (window.AudioContext || window.webkitAudioContext)();
+    audioContext.suspend();
+  };
+
+  const play = async (audioBuffer: ArrayBuffer, onended: () => void | null) => {
+    if (audioBufferSourceNode) {
+      audioBufferSourceNode.stop();
+      audioBufferSourceNode.disconnect();
+    }
+
+    const buffer = await audioContext!.decodeAudioData(audioBuffer);
+    audioBufferSourceNode = audioContext!.createBufferSource();
+    audioBufferSourceNode.buffer = buffer;
+    audioBufferSourceNode.connect(audioContext!.destination);
+    audioContext!.resume().then(() => {
+      audioBufferSourceNode!.start();
+    });
+    audioBufferSourceNode.onended = onended;
+  };
+
+  const stop = () => {
+    if (audioBufferSourceNode) {
+      audioBufferSourceNode.stop();
+      audioBufferSourceNode.disconnect();
+      audioBufferSourceNode = null;
+    }
+    if (audioContext) {
+      audioContext.close();
+      audioContext = null;
+    }
+  };
+
+  return { init, play, stop };
+}