# # Copyright (c) 2024–2025, Daily # # SPDX-License-Identifier: BSD 2-Clause License # import os from dotenv import load_dotenv from loguru import logger from pipecat.adapters.schemas.function_schema import FunctionSchema from pipecat.adapters.schemas.tools_schema import ToolsSchema from pipecat.audio.turn.smart_turn.local_smart_turn_v3 import LocalSmartTurnAnalyzerV3 from pipecat.audio.vad.silero import SileroVADAnalyzer from pipecat.audio.vad.vad_analyzer import VADParams from pipecat.frames.frames import ( Frame, LLMFullResponseEndFrame, LLMFullResponseStartFrame, LLMRunFrame, TextFrame, UserImageRequestFrame, ) from pipecat.pipeline.parallel_pipeline import ParallelPipeline from pipecat.pipeline.pipeline import Pipeline from pipecat.pipeline.runner import PipelineRunner from pipecat.pipeline.task import PipelineTask from pipecat.processors.aggregators.llm_context import LLMContext from pipecat.processors.aggregators.llm_response_universal import ( LLMContextAggregatorPair, LLMUserAggregatorParams, ) from pipecat.processors.frame_processor import FrameDirection, FrameProcessor from pipecat.runner.types import RunnerArguments from pipecat.runner.utils import ( create_transport, get_transport_client_id, maybe_capture_participant_camera, ) from pipecat.services.cartesia.tts import CartesiaTTSService from pipecat.services.deepgram.stt import DeepgramSTTService from pipecat.services.llm_service import FunctionCallParams from pipecat.services.moondream.vision import MoondreamService from pipecat.services.openai.llm import OpenAILLMService from pipecat.transports.base_transport import BaseTransport, TransportParams from pipecat.transports.daily.transport import DailyParams from pipecat.turns.user_stop import TurnAnalyzerUserTurnStopStrategy from pipecat.turns.user_turn_strategies import UserTurnStrategies load_dotenv(override=True) async def fetch_user_image(params: FunctionCallParams): """Fetch the user image. When called, this function pushes a UserImageRequestFrame upstream to the transport. As a result, the transport will request the user image and push a UserImageRawFrame downstream. """ user_id = params.arguments["user_id"] question = params.arguments["question"] logger.debug(f"Requesting image with user_id={user_id}, question={question}") # Request a user image frame. In this case, we don't want the requested # image to be added to the context because we will process it with # Moondream. await params.llm.push_frame( UserImageRequestFrame(user_id=user_id, text=question, append_to_context=False), FrameDirection.UPSTREAM, ) await params.result_callback(None) # Instead of None, it's possible to also provide a tool call answer to # tell the LLM that we are grabbing the image to analyze. # await params.result_callback({"result": "Image is being captured."}) class MoondreamTextFrameWrapper(FrameProcessor): """Wraps Moondream-provided TextFrames with LLM response start/end frames. This processor detects TextFrames and automatically wraps them with LLMFullResponseStartFrame and LLMFullResponseEndFrame to provide proper response boundaries for downstream processors. """ async def process_frame(self, frame: Frame, direction: FrameDirection): await super().process_frame(frame, direction) # If we receive a TextFrame, wrap it with response start/end frames if isinstance(frame, TextFrame): await self.push_frame(LLMFullResponseStartFrame(), direction) await self.push_frame(frame, direction) await self.push_frame(LLMFullResponseEndFrame(), direction) else: # For all other frames, just pass them through await self.push_frame(frame, direction) # We store functions so objects (e.g. SileroVADAnalyzer) don't get # instantiated. The function will be called when the desired transport gets # selected. transport_params = { "daily": lambda: DailyParams( audio_in_enabled=True, audio_out_enabled=True, video_in_enabled=True, vad_analyzer=SileroVADAnalyzer(params=VADParams(stop_secs=0.2)), ), "webrtc": lambda: TransportParams( audio_in_enabled=True, audio_out_enabled=True, video_in_enabled=True, vad_analyzer=SileroVADAnalyzer(params=VADParams(stop_secs=0.2)), ), } async def run_bot(transport: BaseTransport, runner_args: RunnerArguments): logger.info(f"Starting bot") stt = DeepgramSTTService(api_key=os.getenv("DEEPGRAM_API_KEY")) tts = CartesiaTTSService( api_key=os.getenv("CARTESIA_API_KEY"), voice_id="71a7ad14-091c-4e8e-a314-022ece01c121", # British Reading Lady ) llm = OpenAILLMService(api_key=os.getenv("OPENAI_API_KEY")) llm.register_function("fetch_user_image", fetch_user_image) fetch_image_function = FunctionSchema( name="fetch_user_image", description="Called when the user requests a description of their camera feed", properties={ "user_id": { "type": "string", "description": "The ID of the user to grab the image from", }, "question": { "type": "string", "description": "The question that the user is asking about the image", }, }, required=["user_id", "question"], ) tools = ToolsSchema(standard_tools=[fetch_image_function]) messages = [ { "role": "system", "content": "You are a helpful LLM in a WebRTC call. Your goal is to demonstrate your capabilities in a succinct way. Your output will be spoken aloud, so avoid special characters that can't easily be spoken, such as emojis or bullet points. Respond to what the user said in a creative and helpful way. You are able to describe images from the user camera.", }, ] context = LLMContext(messages, tools) context_aggregator = LLMContextAggregatorPair( context, user_params=LLMUserAggregatorParams( user_turn_strategies=UserTurnStrategies( stop=[TurnAnalyzerUserTurnStopStrategy(turn_analyzer=LocalSmartTurnAnalyzerV3())] ), ), ) # If you run into weird description, try with use_cpu=True moondream = MoondreamService() # Wrap TextFrames with LLM response start/end frames, which makes Moondream # output be treated like LLM responses for the purpose of context # aggregation. Without this, the assistant context aggregator would ignore # Moondream output (if the TTS service is disabled). moondream_text_wrapper = MoondreamTextFrameWrapper() pipeline = Pipeline( [ transport.input(), # Transport user input stt, # STT context_aggregator.user(), # User responses ParallelPipeline( [llm], # LLM [moondream, moondream_text_wrapper], ), tts, # TTS transport.output(), # Transport bot output context_aggregator.assistant(), # Assistant spoken responses ] ) task = PipelineTask( pipeline, idle_timeout_secs=runner_args.pipeline_idle_timeout_secs, ) @transport.event_handler("on_client_connected") async def on_client_connected(transport, client): logger.info(f"Client connected: {client}") await maybe_capture_participant_camera(transport, client) # Set the participant ID in the image requester client_id = get_transport_client_id(transport, client) # Kick off the conversation. messages.append( { "role": "system", "content": f"Please introduce yourself to the user. Use '{client_id}' as the user ID during function calls.", } ) await task.queue_frames([LLMRunFrame()]) @transport.event_handler("on_client_disconnected") async def on_client_disconnected(transport, client): logger.info(f"Client disconnected") await task.cancel() runner = PipelineRunner(handle_sigint=runner_args.handle_sigint) await runner.run(task) async def bot(runner_args: RunnerArguments): """Main bot entry point compatible with Pipecat Cloud.""" transport = await create_transport(runner_args, transport_params) await run_bot(transport, runner_args) if __name__ == "__main__": from pipecat.runner.run import main main()