Updating foundation examples to use SmallWebRTCTransport and pipecat-ai-small-webrtc-prebuilt (#1534)

Co-authored-by: Filipi Fuchter <filipi@daily.co>
This commit is contained in:
Mark Backman
2025-04-11 19:44:16 -04:00
committed by GitHub
parent 8186219879
commit f6accbd510
120 changed files with 7989 additions and 7179 deletions

View File

@@ -4,11 +4,8 @@
# SPDX-License-Identifier: BSD 2-Clause License
#
import asyncio
import os
import sys
import aiohttp
from dotenv import load_dotenv
from langchain.prompts import ChatPromptTemplate, MessagesPlaceholder
from langchain_community.chat_message_histories import ChatMessageHistory
@@ -16,7 +13,6 @@ from langchain_core.chat_history import BaseChatMessageHistory
from langchain_core.runnables.history import RunnableWithMessageHistory
from langchain_openai import ChatOpenAI
from loguru import logger
from runner import configure
from pipecat.audio.vad.silero import SileroVADAnalyzer
from pipecat.frames.frames import LLMMessagesFrame
@@ -29,14 +25,14 @@ from pipecat.processors.aggregators.llm_response import (
)
from pipecat.processors.frameworks.langchain import LangchainProcessor
from pipecat.services.cartesia.tts import CartesiaTTSService
from pipecat.transports.services.daily import DailyParams, DailyTransport
from pipecat.services.deepgram.stt import DeepgramSTTService
from pipecat.transports.base_transport import TransportParams
from pipecat.transports.network.small_webrtc import SmallWebRTCTransport
from pipecat.transports.network.webrtc_connection import SmallWebRTCConnection
load_dotenv(override=True)
logger.remove(0)
logger.add(sys.stderr, level="DEBUG")
message_store = {}
@@ -46,90 +42,97 @@ def get_session_history(session_id: str) -> BaseChatMessageHistory:
return message_store[session_id]
async def main():
async with aiohttp.ClientSession() as session:
(room_url, token) = await configure(session)
async def run_bot(webrtc_connection: SmallWebRTCConnection):
logger.info(f"Starting bot")
transport = DailyTransport(
room_url,
token,
"Respond bot",
DailyParams(
audio_out_enabled=True,
transcription_enabled=True,
vad_enabled=True,
vad_analyzer=SileroVADAnalyzer(),
transport = SmallWebRTCTransport(
webrtc_connection=webrtc_connection,
params=TransportParams(
audio_in_enabled=True,
audio_out_enabled=True,
vad_enabled=True,
vad_analyzer=SileroVADAnalyzer(),
vad_audio_passthrough=True,
),
)
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
)
prompt = ChatPromptTemplate.from_messages(
[
(
"system",
"Be nice and helpful. Answer very briefly and without special characters like `#` or `*`. "
"Your response will be synthesized to voice and those characters will create unnatural sounds.",
),
)
MessagesPlaceholder("chat_history"),
("human", "{input}"),
]
)
chain = prompt | ChatOpenAI(model="gpt-4o", temperature=0.7)
history_chain = RunnableWithMessageHistory(
chain,
get_session_history,
history_messages_key="chat_history",
input_messages_key="input",
)
lc = LangchainProcessor(history_chain)
tts = CartesiaTTSService(
api_key=os.getenv("CARTESIA_API_KEY"),
voice_id="71a7ad14-091c-4e8e-a314-022ece01c121", # British Reading Lady
)
tma_in = LLMUserResponseAggregator()
tma_out = LLMAssistantResponseAggregator()
prompt = ChatPromptTemplate.from_messages(
[
(
"system",
"Be nice and helpful. Answer very briefly and without special characters like `#` or `*`. "
"Your response will be synthesized to voice and those characters will create unnatural sounds.",
),
MessagesPlaceholder("chat_history"),
("human", "{input}"),
]
)
chain = prompt | ChatOpenAI(model="gpt-4o", temperature=0.7)
history_chain = RunnableWithMessageHistory(
chain,
get_session_history,
history_messages_key="chat_history",
input_messages_key="input",
)
lc = LangchainProcessor(history_chain)
pipeline = Pipeline(
[
transport.input(), # Transport user input
stt,
tma_in, # User responses
lc, # Langchain
tts, # TTS
transport.output(), # Transport bot output
tma_out, # Assistant spoken responses
]
)
tma_in = LLMUserResponseAggregator()
tma_out = LLMAssistantResponseAggregator()
task = PipelineTask(
pipeline,
params=PipelineParams(
allow_interruptions=True,
enable_metrics=True,
enable_usage_metrics=True,
report_only_initial_ttfb=True,
),
)
pipeline = Pipeline(
[
transport.input(), # Transport user input
tma_in, # User responses
lc, # Langchain
tts, # TTS
transport.output(), # Transport bot output
tma_out, # Assistant spoken responses
]
)
@transport.event_handler("on_client_connected")
async def on_client_connected(transport, client):
logger.info(f"Client connected")
# Kick off the conversation.
# the `LLMMessagesFrame` will be picked up by the LangchainProcessor using
# only the content of the last message to inject it in the prompt defined
# above. So no role is required here.
messages = [({"content": "Please briefly introduce yourself to the user."})]
await task.queue_frames([LLMMessagesFrame(messages)])
task = PipelineTask(
pipeline,
params=PipelineParams(
allow_interruptions=True,
enable_metrics=True,
enable_usage_metrics=True,
report_only_initial_ttfb=True,
),
)
@transport.event_handler("on_client_disconnected")
async def on_client_disconnected(transport, client):
logger.info(f"Client disconnected")
@transport.event_handler("on_first_participant_joined")
async def on_first_participant_joined(transport, participant):
await transport.capture_participant_transcription(participant["id"])
lc.set_participant_id(participant["id"])
# Kick off the conversation.
# the `LLMMessagesFrame` will be picked up by the LangchainProcessor using
# only the content of the last message to inject it in the prompt defined
# above. So no role is required here.
messages = [({"content": "Please briefly introduce yourself to the user."})]
await task.queue_frames([LLMMessagesFrame(messages)])
@transport.event_handler("on_client_closed")
async def on_client_closed(transport, client):
logger.info(f"Client closed connection")
await task.cancel()
@transport.event_handler("on_participant_left")
async def on_participant_left(transport, participant, reason):
await task.cancel()
runner = PipelineRunner(handle_sigint=False)
runner = PipelineRunner()
await runner.run(task)
await runner.run(task)
if __name__ == "__main__":
asyncio.run(main())
from run import main
main()