Add flush_audio to FishTTSService

CHANGELOG.md

@@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Added support for Chirp voices in `GoogleTTSService`.
 
+- Added a `flush_audio()` method to `FishTTSService`.
+
 - Added `on_user_turn_audio_data` and `on_bot_turn_audio_data` to
   `AudioBufferProcessor`. This gives the ability to grab the audio of only that
   turn for both the user and the bot.

src/pipecat/services/fish.py

@@ -148,6 +148,14 @@ class FishAudioTTSService(InterruptibleTTSService):
         except Exception as e:
             logger.error(f"Error closing websocket: {e}")
 
+    async def flush_audio(self):
+        """Flush any buffered audio by sending a flush event to Fish Audio."""
+        logger.trace(f"{self}: Flushing audio buffers")
+        if not self._websocket:
+            return
+        flush_message = {"event": "flush"}
+        await self._get_websocket().send(ormsgpack.packb(flush_message))
+
     def _get_websocket(self):
         if self._websocket:
             return self._websocket