examples: fix simple-chatbot

src/pipecat/processors/aggregators/llm_response.py

@@ -4,6 +4,8 @@
 # SPDX-License-Identifier: BSD 2-Clause License
 #
 
+from typing import List
+
 from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
 from pipecat.frames.frames import (
     Frame,
@@ -22,7 +24,7 @@ class LLMResponseAggregator(FrameProcessor):
     def __init__(
         self,
         *,
-        messages: list[dict] | None,
+        messages: List[dict],
         role: str,
         start_frame,
         end_frame,
@@ -65,9 +67,6 @@ class LLMResponseAggregator(FrameProcessor):
     # and T2 would be dropped.
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
-        if not self._messages:
-            return
-
         send_aggregation = False
 
         if isinstance(frame, self._start_frame):
@@ -116,7 +115,7 @@ class LLMResponseAggregator(FrameProcessor):
 
 
 class LLMAssistantResponseAggregator(LLMResponseAggregator):
-    def __init__(self, messages: list[dict]):
+    def __init__(self, messages: List[dict] = []):
         super().__init__(
             messages=messages,
             role="assistant",
@@ -127,7 +126,7 @@ class LLMAssistantResponseAggregator(LLMResponseAggregator):
 
 
 class LLMUserResponseAggregator(LLMResponseAggregator):
-    def __init__(self, messages: list[dict]):
+    def __init__(self, messages: List[dict] = []):
         super().__init__(
             messages=messages,
             role="user",

src/pipecat/transports/base_input.py

@@ -33,7 +33,7 @@ class BaseInputTransport(FrameProcessor):
         self._running = True
 
         # Start media threads.
-        if self._params.audio_in_enabled:
+        if self._params.audio_in_enabled or self._params.vad_enabled:
             self._audio_in_queue = queue.Queue()
             self._audio_in_thread = threading.Thread(target=self._audio_in_thread_handler)
             self._audio_out_thread = threading.Thread(target=self._audio_out_thread_handler)
@@ -41,7 +41,7 @@ class BaseInputTransport(FrameProcessor):
         self._stopped_event = asyncio.Event()
 
     async def start(self):
-        if self._params.audio_in_enabled:
+        if self._params.audio_in_enabled or self._params.vad_enabled:
             self._audio_in_thread.start()
             self._audio_out_thread.start()
 
@@ -62,7 +62,7 @@ class BaseInputTransport(FrameProcessor):
     #
 
     async def cleanup(self):
-        if self._params.audio_in_enabled:
+        if self._params.audio_in_enabled or self._params.vad_enabled:
             self._audio_in_thread.join()
             self._audio_out_thread.join()