Instant voice example.

examples/instant-voice/client/javascript/src/util/instantVoiceHelper.ts

@@ -0,0 +1,39 @@
+import {RTVIClientHelper, RTVIClientHelperOptions, RTVIMessage} from "@pipecat-ai/client-js";
+import {DailyRTVIMessageType} from '@pipecat-ai/daily-transport';
+
+export type InstantVoiceHelperCallbacks = Partial<{
+    onAudioBufferingStarted: () => void;
+    onAudioBufferingStopped: () => void;
+}>;
+
+// --- Interface and class
+export interface InstantVoiceHelperOptions extends RTVIClientHelperOptions {
+    callbacks?: InstantVoiceHelperCallbacks;
+}
+export class InstantVoiceHelper extends RTVIClientHelper {
+
+    protected declare _options: InstantVoiceHelperOptions;
+
+    constructor(options: InstantVoiceHelperOptions) {
+        super(options);
+    }
+
+    handleMessage(rtviMessage: RTVIMessage): void {
+        switch (rtviMessage.type) {
+            case DailyRTVIMessageType.AUDIO_BUFFERING_STARTED:
+                if (this._options.callbacks?.onAudioBufferingStarted) {
+                    this._options.callbacks?.onAudioBufferingStarted()
+                }
+                break;
+            case DailyRTVIMessageType.AUDIO_BUFFERING_STOPPED:
+                if (this._options.callbacks?.onAudioBufferingStopped) {
+                    this._options.callbacks?.onAudioBufferingStopped()
+                }
+                break;
+        }
+    }
+
+    getMessageTypes(): string[] {
+        return [DailyRTVIMessageType.AUDIO_BUFFERING_STARTED, DailyRTVIMessageType.AUDIO_BUFFERING_STOPPED];
+    }
+}