demo fixups

vad: fix Silero VAD required number of frames

CHANGELOG.md

@@ -5,10 +5,243 @@ All notable changes to **pipecat** will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [0.0.35] - 2024-06-28
+
+### Changed
+
+- `FastAPIWebsocketParams` now require a serializer.
+
+- `TwilioFrameSerializer` now requires a `streamSid`.
+
+### Fixed
+
+- Silero VAD number of frames needs to be 512 for 16000 sample rate or 256 for
+  8000 sample rate.
+
+## [0.0.34] - 2024-06-25
+
+### Fixed
+
+- Fixed an issue with asynchronous STT services (Deepgram and Azure) that could
+  interruptions to ignore transcriptions.
+
+- Fixed an issue introduced in 0.0.33 that would cause the LLM to generate
+  shorter output.
+
+## [0.0.33] - 2024-06-25
+
+### Changed
+
+- Upgraded to Cartesia's new Python library 1.0.0. `CartesiaTTSService` now
+  expects a voice ID instead of a voice name (you can get the voice ID from
+  Cartesia's playground). You can also specify the audio `sample_rate` and
+  `encoding` instead of the previous `output_format`.
+
+### Fixed
+
+- Fixed an issue with asynchronous STT services (Deepgram and Azure) that could
+  cause static audio issues and interruptions to not work properly when dealing
+  with multiple LLMs sentences.
+
+- Fixed an issue that could mix new LLM responses with previous ones when
+  handling interruptions.
+
+- Fixed a Daily transport blocking situation that occurred while reading audio
+  frames after a participant left the room. Needs daily-python >= 0.10.1.
+
+## [0.0.32] - 2024-06-22
 
 ### Added
 
+- Allow specifying a `DeepgramSTTService` url which allows using on-prem
+  Deepgram.
+
+- Added new `FastAPIWebsocketTransport`. This is a new websocket transport that
+  can be integrated with FastAPI websockets.
+
+- Added new `TwilioFrameSerializer`. This is a new serializer that knows how to
+  serialize and deserialize audio frames from Twilio.
+
+- Added Daily transport event: `on_dialout_answered`.  See
+  https://reference-python.daily.co/api_reference.html#daily.EventHandler
+
+- Added new `AzureSTTService`. This allows you to use Azure Speech-To-Text.
+
+### Performance
+
+- Convert `BaseOutputTransport` and `BaseOutputTransport` to fully use asyncio
+  and remove the use of threads.
+
+### Other
+
+- Added `twilio-chatbot`. This is an example that shows how to integrate Twilio
+  phone numbers with a Pipecat bot.
+
+- Updated `07f-interruptible-azure.py` to use `AzureLLMService`,
+  `AzureSTTService` and `AzureTTSService`.
+
+## [0.0.31] - 2024-06-13
+
+### Performance
+
+- Break long audio frames into 20ms chunks instead of 10ms.
+
+## [0.0.30] - 2024-06-13
+
+### Added
+
+- Added `report_only_initial_ttfb` to `PipelineParams`. This will make it so
+  only the initial TTFB metrics after the user stops talking are reported.
+
+- Added `OpenPipeLLMService`. This service will let you run OpenAI through
+  OpenPipe's SDK.
+
+- Allow specifying frame processors' name through a new `name` constructor
+  argument.
+
+- Added `DeepgramSTTService`. This service has an ongoing websocket
+  connection. To handle this, it subclasses `AIService` instead of
+  `STTService`. The output of this service will be pushed from the same task,
+  except system frames like `StartFrame`, `CancelFrame` or
+  `StartInterruptionFrame`.
+
+### Changed
+
+- `FrameSerializer.deserialize()` can now return `None` in case it is not
+  possible to desearialize the given data.
+
+- `daily_rest.DailyRoomProperties` now allows extra unknown parameters.
+
+### Fixed
+
+- Fixed an issue where `DailyRoomProperties.exp` always had the same old
+  timestamp unless set by the user.
+
+- Fixed a couple of issues with `WebsocketServerTransport`. It needed to use
+  `push_audio_frame()` and also VAD was not working properly.
+
+- Fixed an issue that would cause LLM aggregator to fail with small
+  `VADParams.stop_secs` values.
+
+- Fixed an issue where `BaseOutputTransport` would send longer audio frames
+  preventing interruptions.
+
+### Other
+
+- Added new `07h-interruptible-openpipe.py` example. This example shows how to
+  use OpenPipe to run OpenAI LLMs and get the logs stored in OpenPipe.
+
+- Added new `dialin-chatbot` example. This examples shows how to call the bot
+  using a phone number.
+
+## [0.0.29] - 2024-06-07
+
+### Added
+
+- Added a new `FunctionFilter`. This filter will let you filter frames based on
+  a given function, except system messages which should never be filtered.
+
+- Added `FrameProcessor.can_generate_metrics()` method to indicate if a
+  processor can generate metrics. In the future this might get an extra argument
+  to ask for a specific type of metric.
+
+- Added `BasePipeline`. All pipeline classes should be based on this class. All
+  subclasses should implement a `processors_with_metrics()` method that returns
+  a list of all `FrameProcessor`s in the pipeline that can generate metrics.
+
+- Added `enable_metrics` to `PipelineParams`.
+
+- Added `MetricsFrame`. The `MetricsFrame` will report different metrics in the
+  system. Right now, it can report TTFB (Time To First Byte) values for
+  different services, that is the time spent between the arrival of a `Frame` to
+  the processor/service until the first `DataFrame` is pushed downstream. If
+  metrics are enabled an intial `MetricsFrame` with all the services in the
+  pipeline will be sent.
+
+- Added TTFB metrics and debug logging for TTS services.
+
+### Changed
+
+- Moved `ParallelTask` to `pipecat.pipeline.parallel_task`.
+
+### Fixed
+
+- Fixed PlayHT TTS service to work properly async.
+
+## [0.0.28] - 2024-06-05
+
+### Fixed
+
+- Fixed an issue with `SileroVADAnalyzer` that would cause memory to keep
+  growing indefinitely.
+
+## [0.0.27] - 2024-06-05
+
+### Added
+
+- Added `DailyTransport.participants()` and `DailyTransport.participant_counts()`.
+
+## [0.0.26] - 2024-06-05
+
+### Added
+
+- Added `OpenAITTSService`.
+
+- Allow passing `output_format` and `model_id` to `CartesiaTTSService` to change
+  audio sample format and the model to use.
+
+- Added `DailyRESTHelper` which helps you create Daily rooms and tokens in an
+  easy way.
+
+- `PipelineTask` now has a `has_finished()` method to indicate if the task has
+  completed. If a task is never ran `has_finished()` will return False.
+
+- `PipelineRunner` now supports SIGTERM. If received, the runner will be
+  canceled.
+
+### Fixed
+
+- Fixed an issue where `BaseInputTransport` and `BaseOutputTransport` where
+  stopping push tasks before pushing `EndFrame` frames could cause the bots to
+  get stuck.
+
+- Fixed an error closing local audio transports.
+
+- Fixed an issue with Deepgram TTS that was introduced in the previous release.
+
+- Fixed `AnthropicLLMService` interruptions. If an interruption occurred, a
+  `user` message could be appended after the previous `user` message. Anthropic
+  does not allow that because it requires alternate `user` and `assistant`
+  messages.
+
+### Performance
+
+- The `BaseInputTransport` does not pull audio frames from sub-classes any
+  more. Instead, sub-classes now push audio frames into a queue in the base
+  class. Also, `DailyInputTransport` now pushes audio frames every 20ms instead
+  of 10ms.
+
+- Remove redundant camera input thread from `DailyInputTransport`. This should
+  improve performance a little bit when processing participant videos.
+
+- Load Cartesia voice on startup.
+
+## [0.0.25] - 2024-05-31
+
+### Added
+
+- Added WebsocketServerTransport. This will create a websocket server and will
+  read messages coming from a client. The messages are serialized/deserialized
+  with protobufs. See `examples/websocket-server` for a detailed example.
+
+- Added function calling (LLMService.register_function()). This will allow the
+  LLM to call functions you have registered when needed. For example, if you
+  register a function to get the weather in Los Angeles and ask the LLM about
+  the weather in Los Angeles, the LLM will call your function.
+  See https://platform.openai.com/docs/guides/function-calling
+
+- Added new `LangchainProcessor`.
+
 - Added Cartesia TTS support (https://cartesia.ai/)
 
 ### Fixed
@@ -18,6 +251,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed an issue where `camera_out_enabled` would cause the highg CPU usage if
   no image was provided.
 
+### Performance
+
+- Removed unnecessary audio input tasks.
 
 ## [0.0.24] - 2024-05-29
 

LICENSE

@@ -1,6 +1,6 @@
 BSD 2-Clause License
 
-Copyright (c) 2024, Kwindla Hultman Kramer
+Copyright (c) 2024, Daily
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:

README.md

@@ -39,7 +39,7 @@ pip install "pipecat-ai[option,...]"
 
 Your project may or may not need these, so they're made available as optional requirements. Here is a list:
 
-- **AI services**: `anthropic`, `azure`, `deepgram`, `google`, `fal`, `moondream`, `openai`, `playht`, `silero`, `whisper`
+- **AI services**: `anthropic`, `azure`, `deepgram`, `google`, `fal`, `moondream`, `openai`, `openpipe`, `playht`, `silero`, `whisper`
 - **Transports**: `local`, `websocket`, `daily`
 
 ## Code examples

dev-requirements.txt

@@ -1,6 +1,8 @@
 autopep8~=2.1.0
 build~=1.2.1
+grpcio-tools~=1.62.2
 pip-tools~=7.4.1
+pyright~=1.1.367
 pytest~=8.2.0
 setuptools~=69.5.1
 setuptools_scm~=8.1.0

dot-env.template

@@ -33,3 +33,6 @@ PLAY_HT_API_KEY=...
 
 # OpenAI
 OPENAI_API_KEY=...
+
+#OpenPipe
+OPENPIPE_API_KEY=...

examples/README.md

@@ -32,13 +32,15 @@ Next, follow the steps in the README for each demo.
 
 ## Projects:
 
-| Project                                      | Description                                                                                                                                | Services                                       |
-| -------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------ | ---------------------------------------------- |
-| [Simple Chatbot](simple-chatbot)             | Basic voice-driven conversational bot. A good starting point for learning the flow of the framework.                                       | Deepgram, OpenAI, Daily, Daily Prebuilt UI            |
-| [Storytelling Chatbot](storytelling-chatbot) | Stitches together multiple third-party services to create a collaborative storytime experience.                                            | Deepgram, ElevenLabs, Open AI, Fal, Daily, Custom UI  |
-| [Translation Chatbot](translation-chatbot)   | Listens for user speech, then translates that speech to Spanish and speaks the translation back. Demonstrates multi-participant use-cases. | Deepgram, Azure, OpenAI, Daily, Daily Prebuilt UI     |
-| [Moondream Chatbot](moondream-chatbot)       | Demonstrates how to add vision capabilities to GPT4. **Note: works best with a GPU**                                                       | Deepgram, OpenAI, Moondream, Daily, Daily Prebuilt UI |
-| Function-calling Chatbot (TBC)               | A chatbot that can call functions in response to user input                                                                                | Deepgram, OpenAI, Fireworks, Daily, Daily Prebuilt UI |
+| Project                                      | Description                                                                                                                                | Services                                                          |
+|----------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------|
+| [Simple Chatbot](simple-chatbot)             | Basic voice-driven conversational bot. A good starting point for learning the flow of the framework.                                       | Deepgram, ElevenLabs, OpenAI, Daily, Daily Prebuilt UI            |
+| [Storytelling Chatbot](storytelling-chatbot) | Stitches together multiple third-party services to create a collaborative storytime experience.                                            | Deepgram, ElevenLabs, OpenAI, Fal, Daily, Custom UI               |
+| [Translation Chatbot](translation-chatbot)   | Listens for user speech, then translates that speech to Spanish and speaks the translation back. Demonstrates multi-participant use-cases. | Deepgram, Azure, OpenAI, Daily, Daily Prebuilt UI                 |
+| [Moondream Chatbot](moondream-chatbot)       | Demonstrates how to add vision capabilities to GPT4. **Note: works best with a GPU**                                                       | Deepgram, ElevenLabs, OpenAI, Moondream, Daily, Daily Prebuilt UI |
+| [Patient intake](patient-intake)             | A chatbot that can call functions in response to user input.                                                                               | Deepgram, ElevenLabs, OpenAI, Daily, Daily Prebuilt UI            |
+| [Dialin Chatbot](dialin-chatbot)             | A chatbot that connects to an incoming phone call from Daily or Twilio.                                                                    | Deepgram, ElevenLabs, OpenAI, Daily, Twilio                       |
+| [Twilio Chatbot](twilio-chatbot)             | A chatbot that connects to an incoming phone call from Twilio.                                                                             | Deepgram, ElevenLabs, OpenAI, Daily, Twilio                       |
 
 > [!IMPORTANT]
 > These example projects use Daily as a WebRTC transport and can be joined using their hosted Prebuilt UI.

examples/dialin-chatbot/.dockerignore

@@ -0,0 +1,3 @@
+**/.DS_Store
+.env
+.env.*

examples/dialin-chatbot/.gitignore

@@ -0,0 +1,165 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+runpod.toml
+
+# custom script to recursively upgrade items in requirements.py
+upgrade_requirements.py
+.DS_Store

examples/dialin-chatbot/Dockerfile

@@ -0,0 +1,40 @@
+FROM python:3.11-bullseye
+
+ARG DEBIAN_FRONTEND=noninteractive
+ARG USE_PERSISTENT_DATA
+ENV PYTHONUNBUFFERED=1
+# Expose FastAPI port
+ENV FAST_API_PORT=7860
+EXPOSE 7860
+
+# Install system dependencies
+RUN apt-get update && apt-get install --no-install-recommends -y \
+    build-essential \
+    git \
+    ffmpeg \
+    google-perftools \
+    ca-certificates curl gnupg \
+    && apt-get clean && rm -rf /var/lib/apt/lists/*
+
+# Set up a new user named "user" with user ID 1000
+RUN useradd -m -u 1000 user
+
+# Set home to the user's home directory
+ENV HOME=/home/user \
+    PATH=/home/user/.local/bin:$PATH \
+    PYTHONPATH=$HOME/app \
+    PYTHONUNBUFFERED=1
+
+# Switch to the "user" user
+USER user
+
+# Set the working directory to the user's home directory
+WORKDIR $HOME/app
+
+# Install Python dependencies
+COPY *.py .
+COPY ./requirements.txt requirements.txt
+RUN pip3 install --no-cache-dir --upgrade -r requirements.txt
+
+# Start the FastAPI server
+CMD python3 bot_runner.py --host "0.0.0.0" --port ${FAST_API_PORT}

examples/dialin-chatbot/README.md

@@ -0,0 +1,85 @@
+<div align="center">
+ <img alt="pipecat" width="300px" height="auto" src="image.png">
+</div>
+
+# Dialin example
+
+Example project that demonstrates how to add phone number dialin to your Pipecat bots. We include examples for both Daily (`bot_daily.py`) and Twilio (`bot_twilio.py`), depending on who you want to use as a phone vendor.
+
+- 🔁 Transport: Daily WebRTC
+- 💬 Speech-to-Text: Deepgram via Daily transport
+- 🤖 LLM: GPT4-o / OpenAI
+- 🔉 Text-to-Speech: ElevenLabs
+
+#### Should I use Daily or Twilio as a vendor?
+
+If you're starting from scratch, using Daily to provision phone numbers alongside Daily as a transport offers some convenience (such as automatic call forwarding.)
+
+If you already have Twilio numbers and workflows that you want to connect to your Pipecat bots, there is some additional configuration required (you'll need to create a `on_dialin_ready` and use the Twilio client to trigger the forward.)
+
+You can read more about this, as well as see respective walkthroughs in our docs.
+
+## Setup
+
+```shell
+# Install the requirements
+pip install -r requirements.txt
+
+# Setup your env
+mv env.example .env
+```
+
+## Using Daily numbers
+
+Run `bot_runner.py` to handle incoming HTTP requests:
+
+`python bot_runner.py --host localhost`
+
+Then target the following URL:
+
+`POST /daily_start_bot`
+
+For more configuration options, please consult Daily's API documentation.
+
+
+## Using Twilio numbers
+
+As above, but target the following URL:
+
+`POST /twilio_start_bot`
+
+For more configuration options, please consult Twilio's API documentation.
+
+## Deployment example
+
+A Dockerfile is included in this demo for convenience. Here is an example of how to build and deploy your bot to [fly.io](https://fly.io).
+
+*Please note: This demo spawns agents as subprocesses for convenience / demonstration purposes. You would likely not want to do this in production as it would limit concurrency to available system resources. For more information on how to deploy your bots using VMs, refer to the Pipecat documentation.*
+
+### Build the docker image
+
+`docker build -t tag:project .`
+
+### Launch the fly project
+
+`mv fly.example.toml fly.toml`
+
+`fly launch` (using the included fly.toml)
+
+### Setup your secrets on Fly
+
+Set the necessary secrets (found in `env.example`)
+
+`fly secrets set DAILY_API_KEY=... OPENAI_API_KEY=... ELEVENLABS_API_KEY=... ELEVENLABS_VOICE_ID=...`
+
+If you're using Twilio as a number vendor:
+
+`fly secrets set TWILIO_ACCOUNT_SID=... TWILIO_AUTH_TOKEN=...`
+
+### Deploy!
+
+`fly deploy`
+
+## Need to do something more advanced?
+
+This demo covers the basics of bot telephony. If you want to know more about working with PSTN / SIP, please ping us on [Discord](https://discord.gg/pipecat).

examples/dialin-chatbot/bot_daily.py

@@ -0,0 +1,111 @@
+import asyncio
+import aiohttp
+import os
+import sys
+import argparse
+
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.task import PipelineParams, PipelineTask
+from pipecat.processors.aggregators.llm_response import LLMAssistantResponseAggregator, LLMUserResponseAggregator
+from pipecat.frames.frames import (
+    LLMMessagesFrame,
+    EndFrame
+)
+from pipecat.services.elevenlabs import ElevenLabsTTSService
+from pipecat.services.openai import OpenAILLMService
+from pipecat.transports.services.daily import DailyParams, DailyTransport, DailyDialinSettings
+from pipecat.vad.silero import SileroVADAnalyzer
+from loguru import logger
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+logger.remove(0)
+logger.add(sys.stderr, level="DEBUG")
+
+daily_api_key = os.getenv("DAILY_API_KEY", "")
+daily_api_url = os.getenv("DAILY_API_URL", "https://api.daily.co/v1")
+
+
+async def main(room_url: str, token: str, callId: str, callDomain: str):
+    async with aiohttp.ClientSession() as session:
+        # diallin_settings are only needed if Daily's SIP URI is used
+        # If you are handling this via Twilio, Telnyx, set this to None
+        # and handle call-forwarding when on_dialin_ready fires.
+        diallin_settings = DailyDialinSettings(
+            call_id=callId,
+            call_domain=callDomain
+        )
+
+        transport = DailyTransport(
+            room_url,
+            token,
+            "Chatbot",
+            DailyParams(
+                api_url=daily_api_url,
+                api_key=daily_api_key,
+                dialin_settings=diallin_settings,
+                audio_in_enabled=True,
+                audio_out_enabled=True,
+                camera_out_enabled=False,
+                vad_enabled=True,
+                vad_analyzer=SileroVADAnalyzer(),
+                transcription_enabled=True,
+            )
+        )
+
+        tts = ElevenLabsTTSService(
+            aiohttp_session=session,
+            api_key=os.getenv("ELEVENLABS_API_KEY", ""),
+            voice_id=os.getenv("ELEVENLABS_VOICE_ID", ""),
+        )
+
+        llm = OpenAILLMService(
+            api_key=os.getenv("OPENAI_API_KEY"),
+            model="gpt-4o")
+
+        messages = [
+            {
+                "role": "system",
+                "content": "You are Chatbot, a friendly, helpful robot. Your goal is to demonstrate your capabilities in a succinct way. Your output will be converted to audio so don't include special characters in your answers. Respond to what the user said in a creative and helpful way, but keep your responses brief. Start by saying 'Oh, hello! Who dares dial me at this hour?!'.",
+            },
+        ]
+
+        tma_in = LLMUserResponseAggregator(messages)
+        tma_out = LLMAssistantResponseAggregator(messages)
+
+        pipeline = Pipeline([
+            transport.input(),
+            tma_in,
+            llm,
+            tts,
+            transport.output(),
+            tma_out,
+        ])
+
+        task = PipelineTask(pipeline, PipelineParams(allow_interruptions=True))
+
+        @transport.event_handler("on_first_participant_joined")
+        async def on_first_participant_joined(transport, participant):
+            transport.capture_participant_transcription(participant["id"])
+            await task.queue_frames([LLMMessagesFrame(messages)])
+
+        @transport.event_handler("on_participant_left")
+        async def on_participant_left(transport, participant, reason):
+            await task.queue_frame(EndFrame())
+
+        runner = PipelineRunner()
+
+        await runner.run(task)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description="Pipecat Simple ChatBot")
+    parser.add_argument("-u", type=str, help="Room URL")
+    parser.add_argument("-t", type=str, help="Token")
+    parser.add_argument("-i", type=str, help="Call ID")
+    parser.add_argument("-d", type=str, help="Call Domain")
+    config = parser.parse_args()
+
+    asyncio.run(main(config.u, config.t, config.i, config.d))

examples/dialin-chatbot/bot_runner.py

@@ -0,0 +1,220 @@
+"""
+bot_runner.py
+
+HTTP service that listens for incoming calls from either Daily or Twilio,
+provisioning a room and starting a Pipecat bot in response.
+
+Refer to README for more information.
+"""
+import os
+import argparse
+import subprocess
+from pipecat.transports.services.helpers.daily_rest import DailyRESTHelper, DailyRoomObject, DailyRoomProperties, DailyRoomSipParams, DailyRoomParams
+from fastapi import FastAPI, Request, HTTPException
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.responses import JSONResponse, PlainTextResponse
+from twilio.twiml.voice_response import VoiceResponse
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+
+# ------------ Configuration ------------ #
+
+MAX_SESSION_TIME = 5 * 60  # 5 minutes
+REQUIRED_ENV_VARS = ['OPENAI_API_KEY', 'DAILY_API_KEY',
+                     'ELEVENLABS_API_KEY', 'ELEVENLABS_VOICE_ID']
+
+daily_rest_helper = DailyRESTHelper(
+    os.getenv("DAILY_API_KEY", ""),
+    os.getenv("DAILY_API_URL", 'https://api.daily.co/v1'))
+
+
+# ----------------- API ----------------- #
+
+app = FastAPI()
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"]
+)
+
+"""
+Create Daily room, tell the bot if the room is created for Twilio's SIP or Daily's SIP (vendor).
+When the vendor is Daily, the bot handles the call forwarding automatically,
+i.e, forwards the call from the "hold music state" to the Daily Room's SIP URI.
+
+Alternatively, when the vendor is Twilio (not Daily), the bot is responsible for
+updating the state on Twilio. So when `dialin-ready` fires, it takes appropriate
+action using the Twilio Client library.
+"""
+
+
+def _create_daily_room(room_url, callId, callDomain=None, vendor="daily"):
+    if not room_url:
+        params = DailyRoomParams(
+            properties=DailyRoomProperties(
+                # Note: these are the default values, except for the display name
+                sip=DailyRoomSipParams(
+                    display_name="dialin-user",
+                    video=False,
+                    sip_mode="dial-in",
+                    num_endpoints=1
+                )
+            )
+        )
+
+        print(f"Creating new room...")
+        room: DailyRoomObject = daily_rest_helper.create_room(params=params)
+
+    else:
+        # Check passed room URL exist (we assume that it already has a sip set up!)
+        try:
+            print(f"Joining existing room: {room_url}")
+            room: DailyRoomObject = daily_rest_helper.get_room_from_url(
+                room_url)
+        except Exception:
+            raise HTTPException(
+                status_code=500, detail=f"Room not found: {room_url}")
+
+    print(f"Daily room: {room.url} {room.config.sip_endpoint}")
+
+    # Give the agent a token to join the session
+    token = daily_rest_helper.get_token(room.url, MAX_SESSION_TIME)
+
+    if not room or not token:
+        raise HTTPException(
+            status_code=500, detail=f"Failed to get room or token token")
+
+    # Spawn a new agent, and join the user session
+    # Note: this is mostly for demonstration purposes (refer to 'deployment' in docs)
+    if vendor == "daily":
+        bot_proc = f"python3 -m bot_daily -u {room.url} -t {token} -i {
+            callId} -d {callDomain}"
+    else:
+        bot_proc = f"python3 -m bot_twilio -u {room.url} -t {
+            token} -i {callId} -s {room.config.sip_endpoint}"
+
+    try:
+        subprocess.Popen(
+            [bot_proc],
+            shell=True,
+            bufsize=1,
+            cwd=os.path.dirname(os.path.abspath(__file__))
+        )
+    except Exception as e:
+        raise HTTPException(
+            status_code=500, detail=f"Failed to start subprocess: {e}")
+
+    return room
+
+
+@app.post("/twilio_start_bot", response_class=PlainTextResponse)
+async def twilio_start_bot(request: Request):
+    print(f"POST /twilio_voice_bot")
+
+    # twilio_start_bot is invoked directly by Twilio (as a web hook).
+    # On Twilio, under Active Numbers, pick the phone number
+    # Click Configure and under Voice Configuration,
+    # "a call comes in" choose webhook and point the URL to
+    # where this code is hosted.
+    data = {}
+    try:
+        # shouldnt have received json, twilio sends form data
+        form_data = await request.form()
+        data = dict(form_data)
+    except Exception:
+        pass
+
+    room_url = os.getenv("DAILY_SAMPLE_ROOM_URL", None)
+    callId = data.get('CallSid')
+
+    if not callId:
+        raise HTTPException(
+            status_code=500, detail="Missing 'CallSid' in request")
+
+    print("CallId: %s" % callId)
+
+    # create room and tell the bot to join the created room
+    # note: Twilio does not require a callDomain
+    room: DailyRoomObject = _create_daily_room(
+        room_url, callId, None, "twilio")
+
+    print(f"Put Twilio on hold...")
+    # We have the room and the SIP URI,
+    # but we do not know if the Daily SIP Worker and the Bot have joined the call
+    # put the call on hold until the 'on_dialin_ready' fires.
+    # Then, the bot will update the called sid with the sip uri.
+    # http://com.twilio.music.classical.s3.amazonaws.com/BusyStrings.mp3
+    resp = VoiceResponse()
+    resp.play(
+        url="http://com.twilio.sounds.music.s3.amazonaws.com/MARKOVICHAMP-Borghestral.mp3", loop=10)
+    return str(resp)
+
+
+@app.post("/daily_start_bot")
+async def daily_start_bot(request: Request) -> JSONResponse:
+    # The /daily_start_bot is invoked when a call is received on Daily's SIP URI
+    # daily_start_bot will create the room, put the call on hold until
+    # the bot and sip worker are ready. Daily will automatically
+    # forward the call to the SIP URi when dialin_ready fires.
+
+    # Use specified room URL, or create a new one if not specified
+    room_url = os.getenv("DAILY_SAMPLE_ROOM_URL", None)
+    # Get the dial-in properties from the request
+    try:
+        data = await request.json()
+        if "test" in data:
+            # Pass through any webhook checks
+            return JSONResponse({"test": True})
+        callId = data.get("callId", None)
+        callDomain = data.get("callDomain", None)
+    except Exception:
+        raise HTTPException(
+            status_code=500,
+            detail="Missing properties 'callId' or 'callDomain'")
+
+    print(f"CallId: {callId}, CallDomain: {callDomain}")
+    room: DailyRoomObject = _create_daily_room(
+        room_url, callId, callDomain, "daily")
+
+    # Grab a token for the user to join with
+    return JSONResponse({
+        "room_url": room.url,
+        "sipUri": room.config.sip_endpoint
+    })
+
+# ----------------- Main ----------------- #
+
+
+if __name__ == "__main__":
+    # Check environment variables
+    for env_var in REQUIRED_ENV_VARS:
+        if env_var not in os.environ:
+            raise Exception(f"Missing environment variable: {env_var}.")
+
+    parser = argparse.ArgumentParser(description="Pipecat Bot Runner")
+    parser.add_argument("--host", type=str,
+                        default=os.getenv("HOST", "0.0.0.0"), help="Host address")
+    parser.add_argument("--port", type=int,
+                        default=os.getenv("PORT", 7860), help="Port number")
+    parser.add_argument("--reload", action="store_true",
+                        default=True, help="Reload code on change")
+
+    config = parser.parse_args()
+
+    try:
+        import uvicorn
+
+        uvicorn.run(
+            "bot_runner:app",
+            host=config.host,
+            port=config.port,
+            reload=config.reload
+        )
+
+    except KeyboardInterrupt:
+        print("Pipecat runner shutting down...")

examples/dialin-chatbot/bot_twilio.py

@@ -0,0 +1,125 @@
+import asyncio
+import aiohttp
+import os
+import sys
+import argparse
+
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.task import PipelineParams, PipelineTask
+from pipecat.processors.aggregators.llm_response import LLMAssistantResponseAggregator, LLMUserResponseAggregator
+from pipecat.frames.frames import (
+    LLMMessagesFrame,
+    EndFrame
+)
+from pipecat.services.elevenlabs import ElevenLabsTTSService
+from pipecat.services.openai import OpenAILLMService
+from pipecat.transports.services.daily import DailyParams, DailyTransport
+from pipecat.vad.silero import SileroVADAnalyzer
+
+from twilio.rest import Client
+
+from loguru import logger
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+logger.remove(0)
+logger.add(sys.stderr, level="DEBUG")
+
+
+twilio_account_sid = os.getenv('TWILIO_ACCOUNT_SID')
+twilio_auth_token = os.getenv('TWILIO_AUTH_TOKEN')
+twilioclient = Client(twilio_account_sid, twilio_auth_token)
+
+daily_api_key = os.getenv("DAILY_API_KEY", "")
+
+
+async def main(room_url: str, token: str, callId: str, sipUri: str):
+    async with aiohttp.ClientSession() as session:
+        # diallin_settings are only needed if Daily's SIP URI is used
+        # If you are handling this via Twilio, Telnyx, set this to None
+        # and handle call-forwarding when on_dialin_ready fires.
+        transport = DailyTransport(
+            room_url,
+            token,
+            "Chatbot",
+            DailyParams(
+                api_key=daily_api_key,
+                dialin_settings=None,  # Not required for Twilio
+                audio_in_enabled=True,
+                audio_out_enabled=True,
+                camera_out_enabled=False,
+                vad_enabled=True,
+                vad_analyzer=SileroVADAnalyzer(),
+                transcription_enabled=True,
+            )
+        )
+
+        tts = ElevenLabsTTSService(
+            aiohttp_session=session,
+            api_key=os.getenv("ELEVENLABS_API_KEY", ""),
+            voice_id=os.getenv("ELEVENLABS_VOICE_ID", ""),
+        )
+
+        llm = OpenAILLMService(
+            api_key=os.getenv("OPENAI_API_KEY"),
+            model="gpt-4o")
+
+        messages = [
+            {
+                "role": "system",
+                "content": "You are Chatbot, a friendly, helpful robot. Your goal is to demonstrate your capabilities in a succinct way. Your output will be converted to audio so don't include special characters in your answers. Respond to what the user said in a creative and helpful way, but keep your responses brief. Start by saying 'Hello! Who dares dial me at this hour?!'.",
+            },
+        ]
+
+        tma_in = LLMUserResponseAggregator(messages)
+        tma_out = LLMAssistantResponseAggregator(messages)
+
+        pipeline = Pipeline([
+            transport.input(),
+            tma_in,
+            llm,
+            tts,
+            transport.output(),
+            tma_out,
+        ])
+
+        task = PipelineTask(pipeline, PipelineParams(allow_interruptions=True))
+
+        @transport.event_handler("on_first_participant_joined")
+        async def on_first_participant_joined(transport, participant):
+            transport.capture_participant_transcription(participant["id"])
+            await task.queue_frames([LLMMessagesFrame(messages)])
+
+        @transport.event_handler("on_participant_left")
+        async def on_participant_left(transport, participant, reason):
+            await task.queue_frame(EndFrame())
+
+        @transport.event_handler("on_dialin_ready")
+        async def on_dialin_ready(transport, cdata):
+            # For Twilio, Telnyx, etc. You need to update the state of the call
+            # and forward it to the sip_uri..
+            print(f"Forwarding call: {callId} {sipUri}")
+
+            try:
+                # The TwiML is updated using Twilio's client library
+                call = twilioclient.calls(callId).update(
+                    twiml=f'<Response><Dial><Sip>{sipUri}</Sip></Dial></Response>'
+                )
+            except Exception as e:
+                raise Exception(f"Failed to forward call: {str(e)}")
+
+        runner = PipelineRunner()
+        await runner.run(task)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description="Pipecat Simple ChatBot")
+    parser.add_argument("-u", type=str, help="Room URL")
+    parser.add_argument("-t", type=str, help="Token")
+    parser.add_argument("-i", type=str, help="Call ID")
+    parser.add_argument("-s", type=str, help="SIP URI")
+    config = parser.parse_args()
+
+    asyncio.run(main(config.u, config.t, config.i, config.s))

examples/dialin-chatbot/env.example

@@ -0,0 +1,8 @@
+DAILY_SAMPLE_ROOM_URL=https://yourdomain.daily.co/yourroom # (optional: for joining the bot to the same room repeatedly for local dev)
+DAILY_API_KEY=.
+DAILY_API_URL=api.daily.co/v1
+OPENAI_API_KEY=
+ELEVENLABS_API_KEY=
+ELEVENLABS_VOICE_ID=
+TWILIO_ACCOUNT_SID=
+TWILIO_AUTH_TOKEN=

examples/dialin-chatbot/fly.example.toml

@@ -0,0 +1,19 @@
+# fly.toml app configuration file generated for pipecat-dialin-demo on 2024-06-03T15:57:57+02:00
+#
+# See https://fly.io/docs/reference/configuration/ for information about how to use this file.
+#
+
+app = 'pipecat-dialin-demo'
+primary_region = 'sjc'
+
+[build]
+
+[http_service]
+  internal_port = 7860
+  force_https = true
+  auto_stop_machines = true
+  auto_start_machines = true
+  min_machines_running = 1
+
+[[vm]]
+  size = 'performance-1x'

examples/dialin-chatbot/requirements.txt

@@ -0,0 +1,7 @@
+pipecat-ai[daily,openai,silero]
+fastapi
+uvicorn
+requests
+python-dotenv
+loguru
+twilio

examples/fast-chatbot/.gitignore

@@ -0,0 +1,165 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+runpod.toml
+
+# custom script to recursively upgrade items in requirements.py
+upgrade_requirements.py
+.DS_Store

examples/fast-chatbot/bot-classic-pipeline.js

@@ -0,0 +1,165 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+from loguru import logger
+import argparse
+import asyncio
+import aiohttp
+import os
+import sys
+import time
+from typing import Optional
+
+from pydantic import BaseModel, ValidationError
+
+from pipecat.vad.vad_analyzer import VADParams
+from pipecat.vad.silero import SileroVADAnalyzer
+from pipecat.transports.services.daily import DailyParams, DailyTransport
+from pipecat.services.openai import OpenAILLMService
+from pipecat.services.deepgram import DeepgramSTTService
+from pipecat.pipeline.task import PipelineParams, PipelineTask
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.frames.frames import LLMMessagesFrame, EndFrame
+
+from pipecat.processors.aggregators.llm_response import (
+    LLMAssistantResponseAggregator, LLMUserResponseAggregator
+)
+
+from helpers import (
+    ClearableDeepgramTTSService,
+    AudioVolumeTimer,
+    TranscriptionTimingLogger
+)
+
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+logger.remove(0)
+logger.add(sys.stderr, level=os.getenv("LOG_LEVEL", "DEBUG"))
+
+
+class BotSettings(BaseModel):
+    room_url: str
+    room_token: str
+    bot_name: str = "Pipecat"
+    prompt: Optional[str] = "You are a helpful assistant."
+    deepgram_api_key: Optional[str] = os.getenv("DEEPGRAM_API_KEY", None)
+    deepgram_voice: Optional[str] = os.getenv("DEEPGRAM_VOICE", "aura-asteria-en")
+    deepgram_tts_base_url: Optional[str] = os.getenv(
+        "DEEPGRAM_TTS_BASE_URL", "https://api.deepgram.com/v1/speak")
+    deepgram_stt_base_url: Optional[str] = os.getenv(
+        "DEEPGRAM_STT_BASE_URL", "https://api.deepgram.com/v1/speak")
+    openai_api_key: Optional[str] = os.getenv("OPENAI_API_KEY", None),
+    openai_model: Optional[str] = os.getenv("OPENAI_MODEL", None),
+    openai_base_url: Optional[str] = os.getenv("OPENAI_BASE_URL", None)
+    vad_stop_secs: Optional[float] = os.getenv("VAD_STOP_SECS", 0.200)
+
+
+async def main(settings: BotSettings):
+    async with aiohttp.ClientSession() as session:
+        transport = DailyTransport(
+            settings.room_url,
+            settings.room_token,
+            settings.bot_name,
+            DailyParams(
+                audio_out_enabled=True,
+                transcription_enabled=False,
+                vad_enabled=True,
+                vad_analyzer=SileroVADAnalyzer(params=VADParams(
+                    stop_secs=settings.vad_stop_secs
+                )),
+                vad_audio_passthrough=True
+            )
+        )
+
+        stt = DeepgramSTTService(
+            name="STT",
+            api_key=settings.deepgram_api_key,
+            url=settings.deepgram_stt_base_url
+        )
+
+        tts = ClearableDeepgramTTSService(
+            name="Voice",
+            aiohttp_session=session,
+            api_key=settings.deepgram_api_key,
+            voice=settings.deepgram_voice,
+            **({'base_url': url} if (url := settings.deepgram_tts_base_url) else {})
+        )
+
+        llm = OpenAILLMService(
+            name="Groq Llama 3 70B",
+            api_key=settings.openai_api_key,
+            model=settings.openai_model,
+            base_url=settings.openai_base_url,
+        )
+
+        messages = [
+            {
+                "role": "system",
+                "content": settings.prompt,
+            },
+        ]
+
+        avt = AudioVolumeTimer()
+        tl = TranscriptionTimingLogger(avt)
+
+        tma_in = LLMUserResponseAggregator(messages)
+        tma_out = LLMAssistantResponseAggregator(messages)
+
+        pipeline = Pipeline([
+            transport.input(),   # Transport user input
+            avt,                 # Audio volume timer
+            stt,                 # Speech-to-text
+            tl,                  # Transcription timing logger
+            tma_in,              # User responses
+            llm,                 # LLM
+            tts,                 # TTS
+            transport.output(),  # Transport bot output
+            tma_out,             # Assistant spoken responses
+        ])
+
+        task = PipelineTask(
+            pipeline,
+            PipelineParams(
+                allow_interruptions=True,
+                enable_metrics=True,
+                report_only_initial_ttfb=True
+            ))
+
+        # When the participant leaves, we exit the bot.
+        @transport.event_handler("on_participant_left")
+        async def on_participant_left(transport, participant, reason):
+            await task.queue_frame(EndFrame())
+
+        # When the first participant joins, the bot should introduce itself.
+        @transport.event_handler("on_first_participant_joined")
+        async def on_first_participant_joined(transport, participant):
+            # Provide some air whilst tracks subscribe
+            time.sleep(2)
+            messages.append(
+                {
+                    "role": "system",
+                    "content": "Introduce yourself by saying 'hello, I'm FastBot, how can I help you today?'"})
+            await task.queue_frames([LLMMessagesFrame(messages)])
+
+        runner = PipelineRunner()
+        await runner.run(task)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description="Pipecat Bot")
+    parser.add_argument("-s", "--settings", type=str, required=True, help="Pipecat bot settings")
+
+    args, unknown = parser.parse_known_args()
+
+    try:
+        settings = BotSettings.model_validate_json(args.settings)
+        print(f"settings: {settings.json()}")
+        asyncio.run(main(settings))
+    except ValidationError as e:
+        print(e)

examples/fast-chatbot/bot-vad-gated.py

@@ -0,0 +1,192 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+from loguru import logger
+import argparse
+import asyncio
+import aiohttp
+import os
+import sys
+import time
+from typing import Optional
+
+from pydantic import BaseModel, ValidationError
+
+from pipecat.vad.vad_analyzer import VADParams
+from pipecat.vad.silero import SileroVADAnalyzer
+from pipecat.transports.services.daily import DailyParams, DailyTransport
+from pipecat.services.openai import OpenAILLMService, OpenAILLMContext
+from pipecat.services.deepgram import DeepgramSTTService
+from pipecat.pipeline.task import PipelineParams, PipelineTask
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.frames.frames import LLMMessagesFrame, EndFrame
+
+from pipecat.processors.aggregators.llm_response import (
+    LLMAssistantResponseAggregator, LLMUserResponseAggregator
+)
+
+from helpers import (
+    GreedyLLMAggregator,
+    ClearableDeepgramTTSService,
+    VADGate,
+    AudioVolumeTimer,
+    TranscriptionTimingLogger
+)
+
+# from helpers import (
+#     ClearableDeepgramTTSService,
+#     AudioVolumeTimer,
+#     TranscriptionTimingLogger
+# )
+
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+logger.remove(0)
+logger.add(sys.stderr, level=os.getenv("LOG_LEVEL", "DEBUG"))
+
+
+class BotSettings(BaseModel):
+    room_url: str
+    room_token: str
+    bot_name: str = "Pipecat"
+    prompt: Optional[str] = "You are a helpful assistant."
+    deepgram_api_key: Optional[str] = os.getenv("DEEPGRAM_API_KEY", None)
+    deepgram_voice: Optional[str] = os.getenv("DEEPGRAM_VOICE", "aura-asteria-en")
+    deepgram_tts_base_url: Optional[str] = os.getenv(
+        "DEEPGRAM_TTS_BASE_URL", "https://api.deepgram.com/v1/speak")
+    deepgram_stt_base_url: Optional[str] = os.getenv(
+        "DEEPGRAM_STT_BASE_URL", "https://api.deepgram.com/v1/speak")
+    openai_api_key: Optional[str] = os.getenv("OPENAI_API_KEY", None),
+    openai_model: Optional[str] = os.getenv("OPENAI_MODEL", None),
+    openai_base_url: Optional[str] = os.getenv("OPENAI_BASE_URL", None)
+    vad_stop_secs: Optional[float] = os.getenv("VAD_STOP_SECS", 0.200)
+
+
+async def main(settings: BotSettings):
+    async with aiohttp.ClientSession() as session:
+        transport = DailyTransport(
+            settings.room_url,
+            settings.room_token,
+            settings.bot_name,
+            DailyParams(
+                audio_out_enabled=True,
+                transcription_enabled=False,
+                vad_enabled=True,
+                vad_analyzer=SileroVADAnalyzer(params=VADParams(
+                    stop_secs=settings.vad_stop_secs
+                )),
+                vad_audio_passthrough=True
+            )
+        )
+
+        stt = DeepgramSTTService(
+            name="STT",
+            api_key=settings.deepgram_api_key,
+            url=settings.deepgram_stt_base_url
+        )
+
+        tts = ClearableDeepgramTTSService(
+            name="Voice",
+            aiohttp_session=session,
+            api_key=settings.deepgram_api_key,
+            voice=settings.deepgram_voice,
+            **({'base_url': url} if (url := settings.deepgram_tts_base_url) else {})
+        )
+
+        llm = OpenAILLMService(
+            name="LLM",
+            api_key=settings.openai_api_key,
+            model=settings.openai_model,
+            base_url=settings.openai_base_url,
+        )
+
+        messages = [
+            {
+                "role": "system",
+                "content": settings.prompt,
+            },
+        ]
+
+        # avt = AudioVolumeTimer()
+        # tl = TranscriptionTimingLogger(avt)
+
+        # tma_in = LLMUserResponseAggregator(messages)
+        # tma_out = LLMAssistantResponseAggregator(messages)
+
+        # pipeline = Pipeline([
+        #     transport.input(),   # Transport user input
+        #     avt,                 # Audio volume timer
+        #     stt,                 # Speech-to-text
+        #     tl,                  # Transcription timing logger
+        #     tma_in,              # User responses
+        #     llm,                 # LLM
+        #     tts,                 # TTS
+        #     transport.output(),  # Transport bot output
+        #     tma_out,             # Assistant spoken responses
+        # ])
+
+        ctx = OpenAILLMContext()
+        greedy = GreedyLLMAggregator(name="greedy", context=ctx)
+        gate = VADGate(name="gate", vad_analyzer=transport.input().vad_analyzer(), context=ctx)
+        avt = AudioVolumeTimer()
+        tl = TranscriptionTimingLogger(avt)
+
+        pipeline = Pipeline([
+            transport.input(),   # Transport user input
+            avt,
+            stt,
+            tl,
+            greedy,
+            llm,                 # LLM
+            tts,                 # TTS
+            gate,
+            transport.output(),  # Transport bot output
+            # FrameLogger()
+        ])
+
+        task = PipelineTask(
+            pipeline,
+            PipelineParams(
+                allow_interruptions=True,
+                enable_metrics=True,
+                report_only_initial_ttfb=True
+            ))
+
+        # When the participant leaves, we exit the bot.
+        @transport.event_handler("on_participant_left")
+        async def on_participant_left(transport, participant, reason):
+            await task.queue_frame(EndFrame())
+
+        # When the first participant joins, the bot should introduce itself.
+        @transport.event_handler("on_first_participant_joined")
+        async def on_first_participant_joined(transport, participant):
+            # Provide some air whilst tracks subscribe
+            time.sleep(2)
+            messages.append(
+                {
+                    "role": "system",
+                    "content": "Introduce yourself by saying 'hello, I'm FastBot, how can I help you today?'"})
+            await task.queue_frames([LLMMessagesFrame(messages)])
+
+        runner = PipelineRunner()
+        await runner.run(task)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description="Pipecat Bot")
+    parser.add_argument("-s", "--settings", type=str, required=True, help="Pipecat bot settings")
+
+    args, unknown = parser.parse_known_args()
+
+    try:
+        settings = BotSettings.model_validate_json(args.settings)
+        # print(f"settings: {settings.json()}")
+        asyncio.run(main(settings))
+    except ValidationError as e:
+        print(e)

examples/fast-chatbot/bot.py

@@ -0,0 +1 @@
+bot-classic-pipeline.js

examples/fast-chatbot/bot_runner.py

@@ -0,0 +1,164 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+import os
+import argparse
+import subprocess
+
+from pydantic import BaseModel, ValidationError
+from typing import Optional
+
+from pipecat.transports.services.helpers.daily_rest import DailyRESTHelper, DailyRoomObject, DailyRoomProperties, DailyRoomParams
+
+from fastapi import FastAPI, Request, HTTPException
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.responses import JSONResponse
+
+from bot import BotSettings
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+
+# ------------ Configuration ------------ #
+
+MAX_SESSION_TIME = 5 * 60  # 5 minutes
+REQUIRED_ENV_VARS = ['DAILY_API_URL', 'DAILY_API_KEY', 'DEEPGRAM_API_KEY']
+
+daily_rest_helper = DailyRESTHelper(
+    os.getenv("DAILY_API_KEY", ""),
+    os.getenv("DAILY_API_URL", 'https://api.daily.co/v1'))
+
+
+class RunnerSettings(BaseModel):
+    prompt: Optional[
+        str] = "You are a fast, low-latency chatbot. Your goal is to demonstrate voice-driven AI capabilities at human-like speeds. The technology powering you is Daily for transport, Groq for AI inference, Llama 3 (70-B version) LLM, and Deepgram for speech-to-text and text-to-speech. You are running on servers in Oregon. Respond to what the user said in a creative and helpful way, but keep responses short and legible. Ensure responses contain only words. Check again that you have not included special characters other than '?' or '!'."
+    deepgram_voice: Optional[str] = os.getenv("DEEPGRAM_VOICE")
+    openai_model: Optional[str] = os.getenv("OPENAI_MODEL", "gpt-4o")
+    openai_api_key: Optional[str] = os.getenv("OPENAI_API_KEY")
+    test: Optional[bool] = None
+
+# ----------------- API ----------------- #
+
+
+app = FastAPI()
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"]
+)
+
+# ----------------- Main ----------------- #
+
+
+@app.post("/start_bot")
+async def start_bot(request: Request) -> JSONResponse:
+    runner_settings = RunnerSettings()
+    try:
+        request_body = await request.body()
+        if len(request_body) > 0:
+            runner_settings = RunnerSettings.model_validate_json(request_body)
+    except ValidationError as e:
+        raise HTTPException(
+            status_code=400,
+            detail=f"Invalid request: {e}")
+    except Exception as e:
+        # If no data in request, pass
+        pass
+
+    # Is this a webhook creation request?
+    if runner_settings.test is not None:
+        return JSONResponse({"test": True})
+
+    # Use specified room URL, or create a new one if not specified
+    room_url = os.getenv("DAILY_SAMPLE_ROOM_URL", "")
+
+    if not room_url:
+        params = DailyRoomParams(
+            properties=DailyRoomProperties()
+        )
+        try:
+            room: DailyRoomObject = daily_rest_helper.create_room(params=params)
+        except Exception as e:
+            raise HTTPException(
+                status_code=500,
+                detail=f"Unable to provision room {e}")
+    else:
+        # Check passed room URL exists, we should assume that it already has a sip set up
+        try:
+            room: DailyRoomObject = daily_rest_helper.get_room_from_url(room_url)
+        except Exception:
+            raise HTTPException(
+                status_code=500, detail=f"Room not found: {room_url}")
+
+    # Give the agent a token to join the session
+    token = daily_rest_helper.get_token(room.url, MAX_SESSION_TIME)
+
+    if not room or not token:
+        raise HTTPException(
+            status_code=500, detail=f"Failed to get token for room: {room_url}")
+
+    # Spawn a new agent, and join the user session
+    try:
+        bot_settings = BotSettings(
+            room_url=room.url,
+            room_token=token,
+            prompt=runner_settings.prompt,
+            deepgram_voice=runner_settings.deepgram_voice,
+            openai_model=runner_settings.openai_model,
+            openai_api_key=runner_settings.openai_api_key,
+        )
+        bot_settings_str = bot_settings.model_dump_json(exclude_none=True)
+
+        subprocess.Popen(
+            [f"python3 -m bot -s '{bot_settings_str}'"],
+            shell=True,
+            bufsize=1,
+            cwd=os.path.dirname(os.path.abspath(__file__)))
+    except Exception as e:
+        raise HTTPException(
+            status_code=500, detail=f"Failed to start subprocess: {e}")
+
+    # Grab a token for the user to join with
+    user_token = daily_rest_helper.get_token(room.url, MAX_SESSION_TIME)
+
+    return JSONResponse({
+        "room_url": room.url,
+        "token": user_token,
+    })
+
+
+if __name__ == "__main__":
+    # Check environment variables
+    for env_var in REQUIRED_ENV_VARS:
+        if env_var not in os.environ:
+            raise Exception(f"Missing environment variable: {env_var}.")
+
+    parser = argparse.ArgumentParser(description="Pipecat Bot Runner")
+    parser.add_argument("--host", type=str,
+                        default=os.getenv("HOST", "0.0.0.0"), help="Host address")
+    parser.add_argument("--port", type=int,
+                        default=os.getenv("PORT", 7860), help="Port number")
+    parser.add_argument("--reload", action="store_true",
+                        default=True, help="Reload code on change")
+
+    config = parser.parse_args()
+
+    try:
+        import uvicorn
+
+        uvicorn.run(
+            "bot_runner:app",
+            host=config.host,
+            port=config.port,
+            reload=config.reload
+        )
+
+    except KeyboardInterrupt:
+        print("Pipecat runner shutting down...")

examples/fast-chatbot/env.example

@@ -0,0 +1,12 @@
+DAILY_SAMPLE_ROOM_URL= #optional: use the same room each time, or create a new one if unset
+DAILY_API_KEY=
+DAILY_API_URL=
+
+DEEPGRAM_API_KEY=
+DEEPGRAM_VOICE=
+DEEPGRAM_STT_URL=
+DEEPGRAM_TTS_BASE_URL=
+
+OPENAI_API_KEY=
+OPENAI_MODEL=
+OPENAI_BASE_URL=

examples/fast-chatbot/helpers.py

@@ -0,0 +1,267 @@
+from loguru import logger
+import asyncio
+import math
+import struct
+import time
+from dataclasses import dataclass, field
+from typing import List
+
+
+from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
+from pipecat.frames.frames import (
+    Frame,
+    AudioRawFrame,
+    InterimTranscriptionFrame,
+    TranscriptionFrame,
+    TextFrame,
+    StartInterruptionFrame,
+    LLMFullResponseStartFrame,
+    TTSStoppedFrame,
+    MetricsFrame
+)
+
+from pipecat.vad.vad_analyzer import VADAnalyzer, VADState
+from pipecat.services.deepgram import DeepgramTTSService
+from pipecat.services.openai import OpenAILLMContext, OpenAILLMContextFrame
+
+
+class GreedyLLMAggregator(FrameProcessor):
+    def __init__(self, context: OpenAILLMContext = None, **kwargs):
+        super().__init__(**kwargs)
+        self.context: OpenAILLMContext = context if context else OpenAILLMContext()
+
+    async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
+        logger.debug(f"{frame}")
+
+        try:
+            if isinstance(frame, InterimTranscriptionFrame):
+                return
+
+            if isinstance(frame, TranscriptionFrame):
+                # append transcribed text to last "user" frame
+                if self.context.messages and self.context.messages[-1]["role"] == "user":
+                    last_frame = self.context.messages.pop()
+                else:
+                    last_frame = {"role": "user", "content": ""}
+
+                last_frame["content"] += " " + frame.text
+                self.context.messages.append(last_frame)
+
+                oai_context_frame = OpenAILLMContextFrame(context=self.context)
+                logger.debug(f"pushing frame {oai_context_frame}")
+                await self.push_frame(oai_context_frame)
+                return
+
+            await self.push_frame(frame, direction)
+        except Exception as e:
+            logger.debug(f"error: {e}")
+
+
+class ClearableDeepgramTTSService(DeepgramTTSService):
+    def __init___(self, **kwargs):
+        super().__init(**kwargs)
+
+    async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
+        if isinstance(frame, StartInterruptionFrame):
+            self._current_sentence = ""
+
+
+@dataclass
+class BufferedSentence:
+    audio_frames: List[AudioRawFrame] = field(default_factory=list)
+    text_frame: TextFrame = None
+
+
+class VADGate(FrameProcessor):
+
+    def __init__(
+            self,
+            vad_analyzer: VADAnalyzer = None,
+            context: OpenAILLMContext = None,
+            **kwargs):
+        super().__init__(**kwargs)
+        self.vad_analyzer = vad_analyzer
+        self.context = context
+
+        self._audio_pusher_task = None
+        self._expect_text_frame_next = False
+        self._sentences: List[BufferedSentence] = []
+
+    # queue output from tts one sentence at a time. associate a buffer of audio frames with the content of
+    # each text frame.
+    #
+    # start a coroutine to service the queue and send sentences down the pipeline when possible.
+    # 1. do not send anything when we are not in VADState.QUIET
+    # 2. if we are in VADState.QUIET, send a sentence, estimate how long it will take for that sentence
+    #    to output, sleep until it's time to send another sentence
+    # 3. each time we send a sentence, append it to the conversation context
+    # 3. when the sentence buffer becomes empty, cancel the coroutine
+    # 4. if we get a new LLMFullResponse, treat that as a cancellation, too
+
+    async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
+        try:
+
+            # A TTSService will emit a series of AudioRawFrame objects, then a TTSStoppedFrame,
+            # then a TextFrame.
+
+            if self._expect_text_frame_next:
+                self._expect_text_frame_next = False
+                if isinstance(frame, TextFrame):
+                    self._sentences[-1].text_frame = frame
+                else:
+                    logger.debug(f"expected a text frame, but received {frame}")
+                    await self.push_frame(frame, direction)
+                return
+            else:
+                if isinstance(frame, TextFrame):
+                    logger.error(f"XXXXXXXXXXXXXXXXXXX received a text frame, wasn't expecting it.")
+
+            if isinstance(frame, AudioRawFrame):
+                # if our buffer is empty or has a "finished" sentence at the end,
+                # then we need to start buffering a new sentence
+                if not self._sentences or self._sentences[-1].text_frame:
+                    self._sentences.append(BufferedSentence())
+                self._sentences[-1].audio_frames.append(frame)
+                await self.maybe_start_audio_pusher_task()
+                return
+
+            if isinstance(frame, TTSStoppedFrame):
+                self._expect_text_frame_next = True
+                await self.push_frame(frame, direction)
+                return
+
+            # There are two ways we can be interrupted. During greedy inference, a new
+            # LLM response can start. Or, during playout, we can get a traditional
+            # user interruption frame.
+            if (isinstance(frame, LLMFullResponseStartFrame) or
+                    isinstance(frame, StartInterruptionFrame)):
+                logger.debug(f"{frame} - Handle interruption in VADGate")
+                self._sentences = []
+                if self._audio_pusher_task:
+                    self._audio_pusher_task.cancel()
+                    self._audio_pusher_task = None
+                await self.push_frame(frame, direction)
+                return
+
+            await self.push_frame(frame, direction)
+        except Exception as e:
+            logger.debug(f"error: {e}")
+
+    async def maybe_start_audio_pusher_task(self):
+        try:
+            if self._audio_pusher_task:
+                return
+            self._audio_pusher_task = self.get_event_loop().create_task(self.push_audio())
+
+        except Exception as e:
+            logger.debug(f"Exception {e}")
+
+    async def push_audio(self):
+        try:
+            while True:
+                if not self._sentences:
+                    await asyncio.sleep(0.01)
+                    continue
+
+                if self.vad_analyzer._vad_state != VADState.QUIET:
+                    await asyncio.sleep(0.01)
+                    continue
+
+                # we only want to push completed sentence buffers
+                if not self._sentences[0].text_frame:
+                    await asyncio.sleep(0.01)
+                    continue
+
+                s = self._sentences.pop(0)
+                if not s.audio_frames:
+                    continue
+                sample_rate = s.audio_frames[0].sample_rate
+                duration = 0
+                logger.debug(f"Pushing {len(s.audio_frames)} audio frames")
+                for frame in s.audio_frames:
+                    await self.push_frame(frame)
+                    # assume linear16 encoding (2 bytes per sample). todo: add some more
+                    # metadata to AudioRawFrame, maybe
+                    duration += (len(frame.audio) / 2 / frame.num_channels) / sample_rate
+                await asyncio.sleep(duration - 20 / 1000)
+                if self.context:
+                    logger.debug(f"Appending assistant message to context: [{s.text_frame.text}]")
+                    self.context.messages.append(
+                        {"role": "assistant", "content": s.text_frame.text}
+                    )
+                await self.push_frame(s.text_frame)
+
+        except Exception as e:
+            logger.debug(f"Exception {e}")
+
+
+class TranscriptionTimingLogger(FrameProcessor):
+    def __init__(self, avt):
+        super().__init__()
+        self.name = "Transcription"
+        self._avt = avt
+
+    async def process_frame(self, frame: Frame, direction: FrameDirection):
+        try:
+            await super().process_frame(frame, direction)
+            if isinstance(frame, TranscriptionFrame):
+                elapsed = time.time() - self._avt.last_transition_ts
+                logger.debug(f"Transcription TTF: {elapsed}")
+                await self.push_frame(MetricsFrame(ttfb={self.name: elapsed}))
+
+            await self.push_frame(frame, direction)
+        except Exception as e:
+            logger.debug(f"Exception {e}")
+
+
+class AudioVolumeTimer(FrameProcessor):
+    def __init__(self):
+        super().__init__()
+        self.last_transition_ts = 0
+        self._prev_volume = -80
+        self._speech_volume_threshold = -50
+
+    async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
+        if isinstance(frame, AudioRawFrame):
+            volume = self.calculate_volume(frame)
+            # print(f"Audio volume: {volume:.2f} dB")
+            if (volume >= self._speech_volume_threshold and
+                    self._prev_volume < self._speech_volume_threshold):
+                # logger.debug("transition above speech volume threshold")
+                self.last_transition_ts = time.time()
+            elif (volume < self._speech_volume_threshold and
+                    self._prev_volume >= self._speech_volume_threshold):
+                # logger.debug("transition below non-speech volume threshold")
+                self.last_transition_ts = time.time()
+            self._prev_volume = volume
+
+        await self.push_frame(frame, direction)
+
+    def calculate_volume(self, frame: AudioRawFrame) -> float:
+        if frame.num_channels != 1:
+            raise ValueError(f"Expected 1 channel, got {frame.num_channels}")
+
+        # Unpack audio data into 16-bit integers
+        fmt = f"{len(frame.audio) // 2}h"
+        audio_samples = struct.unpack(fmt, frame.audio)
+
+        # Calculate RMS
+        sum_squares = sum(sample**2 for sample in audio_samples)
+        rms = math.sqrt(sum_squares / len(audio_samples))
+
+        # Convert RMS to decibels (dB)
+        # Reference: maximum value for 16-bit audio is 32767
+        if rms > 0:
+            db = 20 * math.log10(rms / 32767)
+        else:
+            db = -96  # Minimum value (almost silent)
+
+        return db

examples/fast-chatbot/requirements.txt

@@ -0,0 +1,6 @@
+pipecat-ai[daily,openai,silero,deepgram]
+fastapi
+uvicorn
+requests
+python-dotenv
+loguru

examples/foundational/02-llm-say-one-thing.py

@@ -44,7 +44,7 @@ async def main(room_url):
 
         llm = OpenAILLMService(
             api_key=os.getenv("OPENAI_API_KEY"),
-            model="gpt-4-turbo-preview")
+            model="gpt-4o")
 
         messages = [
             {

examples/foundational/05-sync-speech-and-image.py

@@ -23,11 +23,11 @@ from pipecat.frames.frames import (
 from pipecat.pipeline.pipeline import Pipeline
 from pipecat.pipeline.runner import PipelineRunner
 from pipecat.pipeline.task import PipelineTask
+from pipecat.pipeline.parallel_task import ParallelTask
 from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
 from pipecat.processors.aggregators.gated import GatedAggregator
 from pipecat.processors.aggregators.llm_response import LLMFullResponseAggregator
 from pipecat.processors.aggregators.sentence import SentenceAggregator
-from pipecat.processors.aggregators.parallel_task import ParallelTask
 from pipecat.services.openai import OpenAILLMService
 from pipecat.services.elevenlabs import ElevenLabsTTSService
 from pipecat.services.fal import FalImageGenService
@@ -59,6 +59,8 @@ class MonthPrepender(FrameProcessor):
         self.prepend_to_next_text_frame = False
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, MonthFrame):
             self.most_recent_month = frame.month
         elif self.prepend_to_next_text_frame and isinstance(frame, TextFrame):
@@ -93,7 +95,7 @@ async def main(room_url):
 
         llm = OpenAILLMService(
             api_key=os.getenv("OPENAI_API_KEY"),
-            model="gpt-4-turbo-preview")
+            model="gpt-4o")
 
         imagegen = FalImageGenService(
             params=FalImageGenService.InputParams(

examples/foundational/05a-local-sync-speech-and-image.py

@@ -50,6 +50,8 @@ async def main():
                     self.text = ""
 
                 async def process_frame(self, frame: Frame, direction: FrameDirection):
+                    await super().process_frame(frame, direction)
+
                     if isinstance(frame, TextFrame):
                         self.text = frame.text
                     await self.push_frame(frame, direction)
@@ -60,6 +62,8 @@ async def main():
                     self.audio = bytearray()
 
                 async def process_frame(self, frame: Frame, direction: FrameDirection):
+                    await super().process_frame(frame, direction)
+
                     if isinstance(frame, AudioRawFrame):
                         self.audio.extend(frame.audio)
                         self.frame = AudioRawFrame(
@@ -71,12 +75,14 @@ async def main():
                     self.frame = None
 
                 async def process_frame(self, frame: Frame, direction: FrameDirection):
+                    await super().process_frame(frame, direction)
+
                     if isinstance(frame, URLImageRawFrame):
                         self.frame = frame
 
             llm = OpenAILLMService(
                 api_key=os.getenv("OPENAI_API_KEY"),
-                model="gpt-4-turbo-preview")
+                model="gpt-4o")
 
             tts = ElevenLabsTTSService(
                 aiohttp_session=session,
@@ -156,7 +162,7 @@ async def main():
             await runner.stop_when_done()
 
         async def run_tk():
-            while True:
+            while not task.has_finished():
                 tk_root.update()
                 tk_root.update_idletasks()
                 await asyncio.sleep(0.1)

examples/foundational/06a-image-sync.py

@@ -49,6 +49,8 @@ class ImageSyncAggregator(FrameProcessor):
         self._waiting_image_bytes = self._waiting_image.tobytes()
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if not isinstance(frame, SystemFrame):
             await self.push_frame(ImageRawFrame(image=self._speaking_image_bytes, size=(1024, 1024), format=self._speaking_image_format))
             await self.push_frame(frame)
@@ -81,7 +83,7 @@ async def main(room_url: str, token):
 
         llm = OpenAILLMService(
             api_key=os.getenv("OPENAI_API_KEY"),
-            model="gpt-4-turbo-preview")
+            model="gpt-4o")
 
         messages = [
             {

examples/foundational/07-interruptible.py

@@ -53,7 +53,7 @@ async def main(room_url: str, token):
 
         llm = OpenAILLMService(
             api_key=os.getenv("OPENAI_API_KEY"),
-            model="gpt-4-turbo-preview")
+            model="gpt-4o")
 
         messages = [
             {
@@ -74,7 +74,11 @@ async def main(room_url: str, token):
             tma_out              # Assistant spoken responses
         ])
 
-        task = PipelineTask(pipeline, PipelineParams(allow_interruptions=True))
+        task = PipelineTask(pipeline, PipelineParams(
+            allow_interruptions=True,
+            enable_metrics=True,
+            report_only_initial_ttfb=True,
+        ))
 
         @transport.event_handler("on_first_participant_joined")
         async def on_first_participant_joined(transport, participant):

examples/foundational/07b-interruptible-langchain.py

@@ -0,0 +1,125 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+import asyncio
+import os
+import sys
+
+import aiohttp
+
+from pipecat.frames.frames import LLMMessagesFrame
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.task import PipelineParams, PipelineTask
+from pipecat.processors.aggregators.llm_response import (
+    LLMAssistantResponseAggregator, LLMUserResponseAggregator)
+from pipecat.processors.frameworks.langchain import LangchainProcessor
+from pipecat.services.elevenlabs import ElevenLabsTTSService
+from pipecat.transports.services.daily import DailyParams, DailyTransport
+from pipecat.vad.silero import SileroVADAnalyzer
+
+from langchain.prompts import ChatPromptTemplate, MessagesPlaceholder
+from langchain_community.chat_message_histories import ChatMessageHistory
+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 dotenv import load_dotenv
+load_dotenv(override=True)
+
+
+logger.remove(0)
+logger.add(sys.stderr, level="DEBUG")
+
+message_store = {}
+
+
+def get_session_history(session_id: str) -> BaseChatMessageHistory:
+    if session_id not in message_store:
+        message_store[session_id] = ChatMessageHistory()
+    return message_store[session_id]
+
+
+async def main(room_url: str, token):
+    async with aiohttp.ClientSession() as session:
+        transport = DailyTransport(
+            room_url,
+            token,
+            "Respond bot",
+            DailyParams(
+                audio_out_enabled=True,
+                transcription_enabled=True,
+                vad_enabled=True,
+                vad_analyzer=SileroVADAnalyzer(),
+            ),
+        )
+
+        tts = ElevenLabsTTSService(
+            aiohttp_session=session,
+            api_key=os.getenv("ELEVENLABS_API_KEY"),
+            voice_id=os.getenv("ELEVENLABS_VOICE_ID"),
+        )
+
+        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)
+
+        tma_in = LLMUserResponseAggregator()
+        tma_out = LLMAssistantResponseAggregator()
+
+        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
+            ]
+        )
+
+        task = PipelineTask(pipeline, PipelineParams(allow_interruptions=True))
+
+        @transport.event_handler("on_first_participant_joined")
+        async def on_first_participant_joined(transport, participant):
+            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)])
+
+        runner = PipelineRunner()
+
+        await runner.run(task)
+
+
+if __name__ == "__main__":
+    (url, token) = configure()
+    asyncio.run(main(url, token))

examples/foundational/07c-interruptible-deepgram.py

@@ -15,7 +15,7 @@ from pipecat.pipeline.runner import PipelineRunner
 from pipecat.pipeline.task import PipelineParams, PipelineTask
 from pipecat.processors.aggregators.llm_response import (
     LLMAssistantResponseAggregator, LLMUserResponseAggregator)
-from pipecat.services.deepgram import DeepgramTTSService
+from pipecat.services.deepgram import DeepgramSTTService, DeepgramTTSService
 from pipecat.services.openai import OpenAILLMService
 from pipecat.transports.services.daily import DailyParams, DailyTransport
 from pipecat.vad.silero import SileroVADAnalyzer
@@ -39,12 +39,14 @@ async def main(room_url: str, token):
             "Respond bot",
             DailyParams(
                 audio_out_enabled=True,
-                transcription_enabled=True,
                 vad_enabled=True,
-                vad_analyzer=SileroVADAnalyzer()
+                vad_analyzer=SileroVADAnalyzer(),
+                vad_audio_passthrough=True
             )
         )
 
+        stt = DeepgramSTTService(api_key=os.getenv("DEEPGRAM_API_KEY"))
+
         tts = DeepgramTTSService(
             aiohttp_session=session,
             api_key=os.getenv("DEEPGRAM_API_KEY"),
@@ -53,7 +55,7 @@ async def main(room_url: str, token):
 
         llm = OpenAILLMService(
             api_key=os.getenv("OPENAI_API_KEY"),
-            model="gpt-4-turbo-preview")
+            model="gpt-4o")
 
         messages = [
             {
@@ -67,6 +69,7 @@ async def main(room_url: str, token):
 
         pipeline = Pipeline([
             transport.input(),   # Transport user input
+            stt,                 # STT
             tma_in,              # User responses
             llm,                 # LLM
             tts,                 # TTS

examples/foundational/07d-interruptible-cartesia.py

@@ -5,7 +5,6 @@
 #
 
 import asyncio
-import aiohttp
 import os
 import sys
 
@@ -20,6 +19,7 @@ from pipecat.services.openai import OpenAILLMService
 from pipecat.transports.services.daily import DailyParams, DailyTransport
 from pipecat.vad.silero import SileroVADAnalyzer
 
+
 from runner import configure
 
 from loguru import logger
@@ -32,60 +32,59 @@ logger.add(sys.stderr, level="DEBUG")
 
 
 async def main(room_url: str, token):
-    async with aiohttp.ClientSession() as session:
-        transport = DailyTransport(
-            room_url,
-            token,
-            "Respond bot",
-            DailyParams(
-                audio_out_enabled=True,
-                transcription_enabled=True,
-                vad_enabled=True,
-                vad_analyzer=SileroVADAnalyzer()
-            )
+    transport = DailyTransport(
+        room_url,
+        token,
+        "Respond bot",
+        DailyParams(
+            audio_out_enabled=True,
+            transcription_enabled=True,
+            vad_enabled=True,
+            vad_analyzer=SileroVADAnalyzer()
         )
+    )
 
-        tts = CartesiaTTSService(
-            api_key=os.getenv("CARTESIA_API_KEY"),
-            voice_name="Barbershop Man"
-        )
+    tts = CartesiaTTSService(
+        api_key=os.getenv("CARTESIA_API_KEY"),
+        voice_id="a0e99841-438c-4a64-b679-ae501e7d6091",  # Barbershop Man
+    )
 
-        llm = OpenAILLMService(
-            api_key=os.getenv("OPENAI_API_KEY"),
-            model="gpt-4o")
+    llm = OpenAILLMService(
+        api_key=os.getenv("OPENAI_API_KEY"),
+        model="gpt-4o")
 
-        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 converted to audio so don't include special characters in your answers. Respond to what the user said in a creative and helpful way.",
-            },
-        ]
+    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 converted to audio so don't include special characters in your answers. Respond to what the user said in a creative and helpful way.",
+        },
+    ]
 
-        tma_in = LLMUserResponseAggregator(messages)
-        tma_out = LLMAssistantResponseAggregator(messages)
+    tma_in = LLMUserResponseAggregator(messages)
+    tma_out = LLMAssistantResponseAggregator(messages)
 
-        pipeline = Pipeline([
-            transport.input(),   # Transport user input
-            tma_in,              # User responses
-            llm,                 # LLM
-            tts,                 # TTS
-            transport.output(),  # Transport bot output
-            tma_out              # Assistant spoken responses
-        ])
+    pipeline = Pipeline([
+        transport.input(),   # Transport user input
+        tma_in,              # User responses
+        llm,                 # LLM
+        tts,                 # TTS
+        transport.output(),  # Transport bot output
+        tma_out              # Assistant spoken responses
+    ])
 
-        task = PipelineTask(pipeline, PipelineParams(allow_interruptions=True))
+    task = PipelineTask(pipeline, PipelineParams(allow_interruptions=True))
 
-        @transport.event_handler("on_first_participant_joined")
-        async def on_first_participant_joined(transport, participant):
-            transport.capture_participant_transcription(participant["id"])
-            # Kick off the conversation.
-            messages.append(
-                {"role": "system", "content": "Please introduce yourself to the user."})
-            await task.queue_frames([LLMMessagesFrame(messages)])
+    @transport.event_handler("on_first_participant_joined")
+    async def on_first_participant_joined(transport, participant):
+        transport.capture_participant_transcription(participant["id"])
+        # Kick off the conversation.
+        messages.append(
+            {"role": "system", "content": "Please introduce yourself to the user."})
+        await task.queue_frames([LLMMessagesFrame(messages)])
 
-        runner = PipelineRunner()
+    runner = PipelineRunner()
 
-        await runner.run(task)
+    await runner.run(task)
 
 
 if __name__ == "__main__":

examples/foundational/07e-interruptible-playht.py

@@ -0,0 +1,93 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+import asyncio
+import os
+import sys
+
+from pipecat.frames.frames import LLMMessagesFrame
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.task import PipelineParams, PipelineTask
+from pipecat.processors.aggregators.llm_response import (
+    LLMAssistantResponseAggregator, LLMUserResponseAggregator)
+from pipecat.services.playht import PlayHTTTSService
+from pipecat.services.openai import OpenAILLMService
+from pipecat.transports.services.daily import DailyParams, DailyTransport
+from pipecat.vad.silero import SileroVADAnalyzer
+
+from runner import configure
+
+from loguru import logger
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+logger.remove(0)
+logger.add(sys.stderr, level="DEBUG")
+
+
+async def main(room_url: str, token):
+    transport = DailyTransport(
+        room_url,
+        token,
+        "Respond bot",
+        DailyParams(
+            audio_out_enabled=True,
+            audio_out_sample_rate=16000,
+            transcription_enabled=True,
+            vad_enabled=True,
+            vad_analyzer=SileroVADAnalyzer()
+        )
+    )
+
+    tts = PlayHTTTSService(
+        user_id=os.getenv("PLAYHT_USER_ID"),
+        api_key=os.getenv("PLAYHT_API_KEY"),
+        voice_url="s3://voice-cloning-zero-shot/801a663f-efd0-4254-98d0-5c175514c3e8/jennifer/manifest.json",
+    )
+
+    llm = OpenAILLMService(
+        api_key=os.getenv("OPENAI_API_KEY"),
+        model="gpt-4o")
+
+    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 converted to audio so don't include special characters in your answers. Respond to what the user said in a creative and helpful way.",
+        },
+    ]
+
+    tma_in = LLMUserResponseAggregator(messages)
+    tma_out = LLMAssistantResponseAggregator(messages)
+
+    pipeline = Pipeline([
+        transport.input(),   # Transport user input
+        tma_in,              # User responses
+        llm,                 # LLM
+        tts,                 # TTS
+        transport.output(),  # Transport bot output
+        tma_out              # Assistant spoken responses
+    ])
+
+    task = PipelineTask(pipeline, PipelineParams(allow_interruptions=True))
+
+    @transport.event_handler("on_first_participant_joined")
+    async def on_first_participant_joined(transport, participant):
+        transport.capture_participant_transcription(participant["id"])
+        # Kick off the conversation.
+        messages.append(
+            {"role": "system", "content": "Please introduce yourself to the user."})
+        await task.queue_frames([LLMMessagesFrame(messages)])
+
+    runner = PipelineRunner()
+
+    await runner.run(task)
+
+
+if __name__ == "__main__":
+    (url, token) = configure()
+    asyncio.run(main(url, token))

examples/foundational/07f-interruptible-azure.py

@@ -0,0 +1,100 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+import asyncio
+import os
+import sys
+
+from pipecat.frames.frames import LLMMessagesFrame
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.task import PipelineParams, PipelineTask
+from pipecat.processors.aggregators.llm_response import (
+    LLMAssistantResponseAggregator, LLMUserResponseAggregator)
+from pipecat.services.azure import AzureLLMService, AzureSTTService, AzureTTSService
+from pipecat.transports.services.daily import DailyParams, DailyTransport
+from pipecat.vad.silero import SileroVADAnalyzer
+
+
+from runner import configure
+
+from loguru import logger
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+logger.remove(0)
+logger.add(sys.stderr, level="DEBUG")
+
+
+async def main(room_url: str, token):
+    transport = DailyTransport(
+        room_url,
+        token,
+        "Respond bot",
+        DailyParams(
+            audio_out_enabled=True,
+            audio_out_sample_rate=16000,
+            vad_enabled=True,
+            vad_analyzer=SileroVADAnalyzer(),
+            vad_audio_passthrough=True,
+        )
+    )
+
+    stt = AzureSTTService(
+        api_key=os.getenv("AZURE_SPEECH_API_KEY"),
+        region=os.getenv("AZURE_SPEECH_REGION"),
+    )
+
+    tts = AzureTTSService(
+        api_key=os.getenv("AZURE_SPEECH_API_KEY"),
+        region=os.getenv("AZURE_SPEECH_REGION"),
+    )
+
+    llm = AzureLLMService(
+        api_key=os.getenv("AZURE_CHATGPT_API_KEY"),
+        endpoint=os.getenv("AZURE_CHATGPT_ENDPOINT"),
+        model=os.getenv("AZURE_CHATGPT_MODEL"),
+    )
+
+    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 converted to audio so don't include special characters in your answers. Respond to what the user said in a creative and helpful way.",
+        },
+    ]
+
+    tma_in = LLMUserResponseAggregator(messages)
+    tma_out = LLMAssistantResponseAggregator(messages)
+
+    pipeline = Pipeline([
+        transport.input(),   # Transport user input
+        stt,                 # STT
+        tma_in,              # User responses
+        llm,                 # LLM
+        tts,                 # TTS
+        transport.output(),  # Transport bot output
+        tma_out              # Assistant spoken responses
+    ])
+
+    task = PipelineTask(pipeline, PipelineParams(allow_interruptions=True))
+
+    @transport.event_handler("on_first_participant_joined")
+    async def on_first_participant_joined(transport, participant):
+        transport.capture_participant_transcription(participant["id"])
+        # Kick off the conversation.
+        messages.append(
+            {"role": "system", "content": "Please introduce yourself to the user."})
+        await task.queue_frames([LLMMessagesFrame(messages)])
+
+    runner = PipelineRunner()
+
+    await runner.run(task)
+
+
+if __name__ == "__main__":
+    (url, token) = configure()
+    asyncio.run(main(url, token))

examples/foundational/07g-interruptible-openai-tts.py

@@ -0,0 +1,92 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+import asyncio
+import os
+import sys
+
+from pipecat.frames.frames import LLMMessagesFrame
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.task import PipelineParams, PipelineTask
+from pipecat.processors.aggregators.llm_response import (
+    LLMAssistantResponseAggregator, LLMUserResponseAggregator)
+from pipecat.services.openai import OpenAITTSService
+from pipecat.services.openai import OpenAILLMService
+from pipecat.transports.services.daily import DailyParams, DailyTransport
+from pipecat.vad.silero import SileroVADAnalyzer
+
+from runner import configure
+
+from loguru import logger
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+logger.remove(0)
+logger.add(sys.stderr, level="DEBUG")
+
+
+async def main(room_url: str, token):
+    transport = DailyTransport(
+        room_url,
+        token,
+        "Respond bot",
+        DailyParams(
+            audio_out_enabled=True,
+            audio_out_sample_rate=24000,
+            transcription_enabled=True,
+            vad_enabled=True,
+            vad_analyzer=SileroVADAnalyzer()
+        )
+    )
+
+    tts = OpenAITTSService(
+        api_key=os.getenv("OPENAI_API_KEY"),
+        voice="alloy"
+    )
+
+    llm = OpenAILLMService(
+        api_key=os.getenv("OPENAI_API_KEY"),
+        model="gpt-4o")
+
+    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 converted to audio so don't include special characters in your answers. Respond to what the user said in a creative and helpful way.",
+        },
+    ]
+
+    tma_in = LLMUserResponseAggregator(messages)
+    tma_out = LLMAssistantResponseAggregator(messages)
+
+    pipeline = Pipeline([
+        transport.input(),   # Transport user input
+        tma_in,              # User responses
+        llm,                 # LLM
+        tts,                 # TTS
+        transport.output(),  # Transport bot output
+        tma_out              # Assistant spoken responses
+    ])
+
+    task = PipelineTask(pipeline, PipelineParams(allow_interruptions=True))
+
+    @transport.event_handler("on_first_participant_joined")
+    async def on_first_participant_joined(transport, participant):
+        transport.capture_participant_transcription(participant["id"])
+        # Kick off the conversation.
+        messages.append(
+            {"role": "system", "content": "Please introduce yourself to the user."})
+        await task.queue_frames([LLMMessagesFrame(messages)])
+
+    runner = PipelineRunner()
+
+    await runner.run(task)
+
+
+if __name__ == "__main__":
+    (url, token) = configure()
+    asyncio.run(main(url, token))

examples/foundational/07h-interruptible-openpipe.py

@@ -0,0 +1,102 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+import asyncio
+import aiohttp
+import os
+import sys
+
+from pipecat.frames.frames import LLMMessagesFrame
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.task import PipelineParams, PipelineTask
+from pipecat.processors.aggregators.llm_response import (
+    LLMAssistantResponseAggregator,
+    LLMUserResponseAggregator,
+)
+from pipecat.services.elevenlabs import ElevenLabsTTSService
+from pipecat.services.openpipe import OpenPipeLLMService
+from pipecat.transports.services.daily import DailyParams, DailyTransport
+from pipecat.vad.silero import SileroVADAnalyzer
+
+from runner import configure
+
+from loguru import logger
+import time
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+logger.remove(0)
+logger.add(sys.stderr, level="DEBUG")
+
+
+async def main(room_url: str, token):
+    async with aiohttp.ClientSession() as session:
+        transport = DailyTransport(
+            room_url,
+            token,
+            "Respond bot",
+            DailyParams(
+                audio_out_enabled=True,
+                transcription_enabled=True,
+                vad_enabled=True,
+                vad_analyzer=SileroVADAnalyzer()
+            )
+        )
+
+        tts = ElevenLabsTTSService(
+            aiohttp_session=session,
+            api_key=os.getenv("ELEVENLABS_API_KEY"),
+            voice_id=os.getenv("ELEVENLABS_VOICE_ID"),
+        )
+
+        timestamp = int(time.time())
+        llm = OpenPipeLLMService(
+            api_key=os.getenv("OPENAI_API_KEY"),
+            openpipe_api_key=os.getenv("OPENPIPE_API_KEY"),
+            model="gpt-4o",
+            tags={
+                "conversation_id": f"pipecat-{timestamp}"
+            }
+        )
+
+        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 converted to audio so don't include special characters in your answers. Respond to what the user said in a creative and helpful way.",
+            },
+        ]
+        tma_in = LLMUserResponseAggregator(messages)
+        tma_out = LLMAssistantResponseAggregator(messages)
+
+        pipeline = Pipeline([
+            transport.input(),   # Transport user input
+            tma_in,              # User responses
+            llm,                 # LLM
+            tts,                 # TTS
+            transport.output(),  # Transport bot output
+            tma_out              # Assistant spoken responses
+        ])
+
+        task = PipelineTask(pipeline, params=PipelineParams(allow_interruptions=True))
+
+        @transport.event_handler("on_first_participant_joined")
+        async def on_first_participant_joined(transport, participant):
+            transport.capture_participant_transcription(participant["id"])
+            # Kick off the conversation.
+            messages.append(
+                {"role": "system", "content": "Please introduce yourself to the user."})
+            await task.queue_frames([LLMMessagesFrame(messages)])
+
+        runner = PipelineRunner()
+
+        await runner.run(task)
+
+
+if __name__ == "__main__":
+    (url, token) = configure()
+    asyncio.run(main(url, token))

examples/foundational/09-mirror.py

@@ -30,6 +30,7 @@ async def main(room_url, token):
             audio_in_enabled=True,
             audio_out_enabled=True,
             camera_out_enabled=True,
+            camera_out_is_live=True,
             camera_out_width=1280,
             camera_out_height=720
         )

examples/foundational/09a-local-mirror.py

@@ -38,6 +38,7 @@ async def main(room_url, token):
         TransportParams(
             audio_out_enabled=True,
             camera_out_enabled=True,
+            camera_out_is_live=True,
             camera_out_width=1280,
             camera_out_height=720))
 
@@ -47,15 +48,15 @@ async def main(room_url, token):
 
     pipeline = Pipeline([daily_transport.input(), tk_transport.output()])
 
-    runner = PipelineRunner()
+    task = PipelineTask(pipeline)
 
     async def run_tk():
-        while runner.is_active():
+        while not task.has_finished():
             tk_root.update()
             tk_root.update_idletasks()
             await asyncio.sleep(0.1)
 
-    task = PipelineTask(pipeline)
+    runner = PipelineRunner()
 
     await asyncio.gather(runner.run(task), run_tk())
 

examples/foundational/11-sound-effects.py

@@ -60,6 +60,8 @@ for file in sound_files:
 class OutboundSoundEffectWrapper(FrameProcessor):
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, LLMFullResponseEndFrame):
             await self.push_frame(sounds["ding1.wav"])
             # In case anything else downstream needs it
@@ -71,6 +73,8 @@ class OutboundSoundEffectWrapper(FrameProcessor):
 class InboundSoundEffectWrapper(FrameProcessor):
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, LLMMessagesFrame):
             await self.push_frame(sounds["ding2.wav"])
             # In case anything else downstream needs it
@@ -95,7 +99,7 @@ async def main(room_url: str, token):
 
         llm = OpenAILLMService(
             api_key=os.getenv("OPENAI_API_KEY"),
-            model="gpt-4-turbo-preview")
+            model="gpt-4o")
 
         tts = ElevenLabsTTSService(
             aiohttp_session=session,

examples/foundational/12-describe-video.py

@@ -42,6 +42,8 @@ class UserImageRequester(FrameProcessor):
         self._participant_id = participant_id
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if self._participant_id and isinstance(frame, TextFrame):
             await self.push_frame(UserImageRequestFrame(self._participant_id), FrameDirection.UPSTREAM)
         await self.push_frame(frame, direction)

examples/foundational/12a-describe-video-gemini-flash.py

@@ -42,6 +42,8 @@ class UserImageRequester(FrameProcessor):
         self._participant_id = participant_id
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if self._participant_id and isinstance(frame, TextFrame):
             await self.push_frame(UserImageRequestFrame(self._participant_id), FrameDirection.UPSTREAM)
         await self.push_frame(frame, direction)

examples/foundational/12b-describe-video-gpt-4o.py

@@ -42,6 +42,8 @@ class UserImageRequester(FrameProcessor):
         self._participant_id = participant_id
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if self._participant_id and isinstance(frame, TextFrame):
             await self.push_frame(UserImageRequestFrame(self._participant_id), FrameDirection.UPSTREAM)
         await self.push_frame(frame, direction)

examples/foundational/12c-describe-video-anthropic.py

@@ -42,6 +42,8 @@ class UserImageRequester(FrameProcessor):
         self._participant_id = participant_id
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if self._participant_id and isinstance(frame, TextFrame):
             await self.push_frame(UserImageRequestFrame(self._participant_id), FrameDirection.UPSTREAM)
         await self.push_frame(frame, direction)

examples/foundational/13-whisper-transcription.py

@@ -29,6 +29,8 @@ logger.add(sys.stderr, level="DEBUG")
 class TranscriptionLogger(FrameProcessor):
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, TranscriptionFrame):
             print(f"Transcription: {frame.text}")
 

examples/foundational/13a-whisper-local.py

@@ -16,8 +16,6 @@ from pipecat.services.whisper import WhisperSTTService
 from pipecat.transports.base_transport import TransportParams
 from pipecat.transports.local.audio import LocalAudioTransport
 
-from runner import configure
-
 from loguru import logger
 
 from dotenv import load_dotenv
@@ -30,11 +28,13 @@ logger.add(sys.stderr, level="DEBUG")
 class TranscriptionLogger(FrameProcessor):
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, TranscriptionFrame):
             print(f"Transcription: {frame.text}")
 
 
-async def main(room_url: str):
+async def main():
     transport = LocalAudioTransport(TransportParams(audio_in_enabled=True))
 
     stt = WhisperSTTService()
@@ -51,5 +51,4 @@ async def main(room_url: str):
 
 
 if __name__ == "__main__":
-    (url, token) = configure()
-    asyncio.run(main(url))
+    asyncio.run(main())

examples/foundational/13b-deepgram-transcription.py

@@ -0,0 +1,58 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+import asyncio
+import os
+import sys
+
+from pipecat.frames.frames import Frame, TranscriptionFrame
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.task import PipelineTask
+from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
+from pipecat.services.deepgram import DeepgramSTTService
+from pipecat.transports.services.daily import DailyParams, DailyTransport
+
+from runner import configure
+
+from loguru import logger
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+logger.remove(0)
+logger.add(sys.stderr, level="DEBUG")
+
+
+class TranscriptionLogger(FrameProcessor):
+
+    async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
+        if isinstance(frame, TranscriptionFrame):
+            print(f"Transcription: {frame.text}")
+
+
+async def main(room_url: str):
+    transport = DailyTransport(room_url, None, "Transcription bot",
+                               DailyParams(audio_in_enabled=True))
+
+    stt = DeepgramSTTService(os.getenv("DEEPGRAM_API_KEY"))
+
+    tl = TranscriptionLogger()
+
+    pipeline = Pipeline([transport.input(), stt, tl])
+
+    task = PipelineTask(pipeline)
+
+    runner = PipelineRunner()
+
+    await runner.run(task)
+
+
+if __name__ == "__main__":
+    (url, token) = configure()
+    asyncio.run(main(url))

examples/foundational/14-function-calling.py

@@ -7,9 +7,9 @@
 import asyncio
 import aiohttp
 import os
-import json
 import sys
 
+from pipecat.frames.frames import TextFrame
 from pipecat.pipeline.pipeline import Pipeline
 from pipecat.pipeline.runner import PipelineRunner
 from pipecat.pipeline.task import PipelineTask
@@ -17,18 +17,13 @@ from pipecat.processors.aggregators.llm_response import (
     LLMAssistantContextAggregator,
     LLMUserContextAggregator,
 )
-from pipecat.services.openai import OpenAILLMContext
 from pipecat.processors.logger import FrameLogger
 from pipecat.services.elevenlabs import ElevenLabsTTSService
-from pipecat.services.openai import OpenAILLMService
+from pipecat.services.openai import OpenAILLMContext, OpenAILLMService
 from pipecat.transports.services.daily import DailyParams, DailyTransport
 from pipecat.vad.silero import SileroVADAnalyzer
-from openai.types.chat import (
-    ChatCompletionToolParam,
-)
-from pipecat.frames.frames import (
-    TextFrame
-)
+
+from openai.types.chat import ChatCompletionToolParam
 
 from runner import configure
 
@@ -46,7 +41,7 @@ async def start_fetch_weather(llm):
 
 
 async def fetch_weather_from_api(llm, args):
-    return ({"conditions": "nice", "temperature": "75"})
+    return {"conditions": "nice", "temperature": "75"}
 
 
 async def main(room_url: str, token):
@@ -71,7 +66,7 @@ async def main(room_url: str, token):
 
         llm = OpenAILLMService(
             api_key=os.getenv("OPENAI_API_KEY"),
-            model="gpt-4-turbo-preview")
+            model="gpt-4o")
         llm.register_function(
             "get_current_weather",
             fetch_weather_from_api,

examples/foundational/15-switch-voices.py

@@ -0,0 +1,155 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+import asyncio
+import aiohttp
+import os
+import sys
+
+from pipecat.frames.frames import LLMMessagesFrame
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.pipeline.parallel_pipeline import ParallelPipeline
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.task import PipelineParams, PipelineTask
+from pipecat.processors.aggregators.llm_response import (
+    LLMAssistantContextAggregator,
+    LLMUserContextAggregator
+)
+from pipecat.processors.aggregators.openai_llm_context import OpenAILLMContext
+from pipecat.processors.filters.function_filter import FunctionFilter
+from pipecat.services.cartesia import CartesiaTTSService
+from pipecat.services.openai import OpenAILLMService
+from pipecat.transports.services.daily import DailyParams, DailyTransport
+from pipecat.vad.silero import SileroVADAnalyzer
+
+from openai.types.chat import ChatCompletionToolParam
+
+from runner import configure
+
+from loguru import logger
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+logger.remove(0)
+logger.add(sys.stderr, level="DEBUG")
+
+current_voice = "News Lady"
+
+
+async def switch_voice(llm, args):
+    global current_voice
+    current_voice = args["voice"]
+    return {"voice": f"You are now using your {current_voice} voice. Your responses should now be as if you were a {current_voice}."}
+
+
+async def news_lady_filter(frame) -> bool:
+    return current_voice == "News Lady"
+
+
+async def british_lady_filter(frame) -> bool:
+    return current_voice == "British Lady"
+
+
+async def barbershop_man_filter(frame) -> bool:
+    return current_voice == "Barbershop Man"
+
+
+async def main(room_url: str, token):
+    async with aiohttp.ClientSession() as session:
+        transport = DailyTransport(
+            room_url,
+            token,
+            "Pipecat",
+            DailyParams(
+                audio_out_enabled=True,
+                transcription_enabled=True,
+                vad_enabled=True,
+                vad_analyzer=SileroVADAnalyzer()
+            )
+        )
+
+        news_lady = CartesiaTTSService(
+            api_key=os.getenv("CARTESIA_API_KEY"),
+            voice_id="bf991597-6c13-47e4-8411-91ec2de5c466",  # Newslady
+        )
+
+        british_lady = CartesiaTTSService(
+            api_key=os.getenv("CARTESIA_API_KEY"),
+            voice_id="79a125e8-cd45-4c13-8a67-188112f4dd22",  # British Lady
+        )
+
+        barbershop_man = CartesiaTTSService(
+            api_key=os.getenv("CARTESIA_API_KEY"),
+            voice_id="a0e99841-438c-4a64-b679-ae501e7d6091",  # Barbershop Man
+        )
+
+        llm = OpenAILLMService(
+            api_key=os.getenv("OPENAI_API_KEY"),
+            model="gpt-4o")
+        llm.register_function("switch_voice", switch_voice)
+
+        tools = [
+            ChatCompletionToolParam(
+                type="function",
+                function={
+                    "name": "switch_voice",
+                    "description": "Switch your voice only when the user asks you to",
+                    "parameters": {
+                        "type": "object",
+                        "properties": {
+                            "voice": {
+                                "type": "string",
+                                "description": "The voice the user wants you to use",
+                            },
+                        },
+                        "required": ["voice"],
+                    },
+                })]
+        messages = [
+            {
+                "role": "system",
+                "content": "You are a helpful LLM in a WebRTC call. Your goal is to demonstrate your capabilities. Respond to what the user said in a creative and helpful way. Your output should not include non-alphanumeric characters. You can do the following voices: 'News Lady', 'British Lady' and 'Barbershop Man'.",
+            },
+        ]
+
+        context = OpenAILLMContext(messages, tools)
+        tma_in = LLMUserContextAggregator(context)
+        tma_out = LLMAssistantContextAggregator(context)
+
+        pipeline = Pipeline([
+            transport.input(),   # Transport user input
+            tma_in,              # User responses
+            llm,                 # LLM
+            ParallelPipeline(    # TTS (one of the following vocies)
+                [FunctionFilter(news_lady_filter), news_lady],            # News Lady voice
+                [FunctionFilter(british_lady_filter), british_lady],      # British Lady voice
+                [FunctionFilter(barbershop_man_filter), barbershop_man],  # Barbershop Man voice
+            ),
+            transport.output(),  # Transport bot output
+            tma_out              # Assistant spoken responses
+        ])
+
+        task = PipelineTask(pipeline, PipelineParams(allow_interruptions=True))
+
+        @transport.event_handler("on_first_participant_joined")
+        async def on_first_participant_joined(transport, participant):
+            transport.capture_participant_transcription(participant["id"])
+            # Kick off the conversation.
+            messages.append(
+                {
+                    "role": "system",
+                    "content": f"Please introduce yourself to the user and let them know the voices you can do. Your initial responses should be as if you were a {current_voice}."})
+            await task.queue_frames([LLMMessagesFrame(messages)])
+
+        runner = PipelineRunner()
+
+        await runner.run(task)
+
+
+if __name__ == "__main__":
+    (url, token) = configure()
+    asyncio.run(main(url, token))

examples/foundational/15a-switch-languages.py

@@ -0,0 +1,153 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+import asyncio
+import aiohttp
+import os
+import sys
+
+from pipecat.frames.frames import LLMMessagesFrame
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.pipeline.parallel_pipeline import ParallelPipeline
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.task import PipelineParams, PipelineTask
+from pipecat.processors.aggregators.llm_response import (
+    LLMAssistantContextAggregator,
+    LLMUserContextAggregator
+)
+from pipecat.processors.aggregators.openai_llm_context import OpenAILLMContext
+from pipecat.processors.filters.function_filter import FunctionFilter
+from pipecat.services.elevenlabs import ElevenLabsTTSService
+from pipecat.services.openai import OpenAILLMService
+from pipecat.services.whisper import Model, WhisperSTTService
+from pipecat.transports.services.daily import DailyParams, DailyTransport
+from pipecat.vad.silero import SileroVADAnalyzer
+
+from openai.types.chat import ChatCompletionToolParam
+
+from runner import configure
+
+from loguru import logger
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+logger.remove(0)
+logger.add(sys.stderr, level="DEBUG")
+
+current_language = "English"
+
+
+async def switch_language(llm, args):
+    global current_language
+    current_language = args["language"]
+    return {"voice": f"Your answers from now on should be in {current_language}."}
+
+
+async def english_filter(frame) -> bool:
+    return current_language == "English"
+
+
+async def spanish_filter(frame) -> bool:
+    return current_language == "Spanish"
+
+
+async def main(room_url: str, token):
+    async with aiohttp.ClientSession() as session:
+        transport = DailyTransport(
+            room_url,
+            token,
+            "Pipecat",
+            DailyParams(
+                audio_in_enabled=True,
+                audio_out_enabled=True,
+                vad_enabled=True,
+                vad_analyzer=SileroVADAnalyzer(),
+                vad_audio_passthrough=True
+            )
+        )
+
+        stt = WhisperSTTService(model=Model.LARGE)
+
+        english_tts = ElevenLabsTTSService(
+            aiohttp_session=session,
+            api_key=os.getenv("ELEVENLABS_API_KEY"),
+            voice_id="pNInz6obpgDQGcFmaJgB",
+        )
+
+        spanish_tts = ElevenLabsTTSService(
+            aiohttp_session=session,
+            api_key=os.getenv("ELEVENLABS_API_KEY"),
+            model="eleven_multilingual_v2",
+            voice_id="9F4C8ztpNUmXkdDDbz3J",
+        )
+
+        llm = OpenAILLMService(
+            api_key=os.getenv("OPENAI_API_KEY"),
+            model="gpt-4o")
+        llm.register_function("switch_language", switch_language)
+
+        tools = [
+            ChatCompletionToolParam(
+                type="function",
+                function={
+                    "name": "switch_language",
+                    "description": "Switch to another language when the user asks you to",
+                    "parameters": {
+                        "type": "object",
+                        "properties": {
+                            "language": {
+                                "type": "string",
+                                "description": "The language the user wants you to speak",
+                            },
+                        },
+                        "required": ["language"],
+                    },
+                })]
+        messages = [
+            {
+                "role": "system",
+                "content": "You are a helpful LLM in a WebRTC call. Your goal is to demonstrate your capabilities. Respond to what the user said in a creative and helpful way. Your output should not include non-alphanumeric characters. You can speak the following languages: 'English' and 'Spanish'.",
+            },
+        ]
+
+        context = OpenAILLMContext(messages, tools)
+        tma_in = LLMUserContextAggregator(context)
+        tma_out = LLMAssistantContextAggregator(context)
+
+        pipeline = Pipeline([
+            transport.input(),   # Transport user input
+            stt,                 # STT
+            tma_in,              # User responses
+            llm,                 # LLM
+            ParallelPipeline(    # TTS (bot will speak the chosen language)
+                [FunctionFilter(english_filter), english_tts],  # English
+                [FunctionFilter(spanish_filter), spanish_tts],  # Spanish
+            ),
+            transport.output(),  # Transport bot output
+            tma_out              # Assistant spoken responses
+        ])
+
+        task = PipelineTask(pipeline, PipelineParams(allow_interruptions=True))
+
+        @transport.event_handler("on_first_participant_joined")
+        async def on_first_participant_joined(transport, participant):
+            transport.capture_participant_transcription(participant["id"])
+            # Kick off the conversation.
+            messages.append(
+                {
+                    "role": "system",
+                    "content": f"Please introduce yourself to the user and let them know the languages you speak. Your initial responses should be in {current_language}."})
+            await task.queue_frames([LLMMessagesFrame(messages)])
+
+        runner = PipelineRunner()
+
+        await runner.run(task)
+
+
+if __name__ == "__main__":
+    (url, token) = configure()
+    asyncio.run(main(url, token))

examples/foundational/16-gpu-container-local-bot.py

@@ -0,0 +1,130 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+import asyncio
+import aiohttp
+import os
+import sys
+import json
+
+from pipecat.frames.frames import LLMMessagesFrame
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.task import PipelineParams, PipelineTask
+from pipecat.processors.aggregators.llm_response import (
+    LLMAssistantResponseAggregator, LLMUserResponseAggregator)
+from pipecat.services.deepgram import DeepgramTTSService
+from pipecat.services.openai import OpenAILLMService
+from pipecat.transports.services.daily import DailyParams, DailyTransport, DailyTransportMessageFrame
+from pipecat.vad.silero import SileroVADAnalyzer
+
+from runner import configure
+
+from loguru import logger
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+logger.remove(0)
+logger.add(sys.stderr, level="DEBUG")
+
+
+async def main(room_url: str, token):
+    async with aiohttp.ClientSession() as session:
+        transport = DailyTransport(
+            room_url,
+            token,
+            "Respond bot",
+            DailyParams(
+                audio_out_enabled=True,
+                transcription_enabled=True,
+                vad_enabled=True,
+                vad_analyzer=SileroVADAnalyzer()
+            )
+        )
+
+        tts = DeepgramTTSService(
+            aiohttp_session=session,
+            api_key=os.getenv("DEEPGRAM_API_KEY"),
+            voice="aura-asteria-en",
+            base_url="http://0.0.0.0:8080/v1/speak"
+        )
+
+        llm = OpenAILLMService(
+            # To use OpenAI
+            # api_key=os.getenv("OPENAI_API_KEY"),
+            # model="gpt-4o"
+            # Or, to use a local vLLM (or similar) api server
+            model="meta-llama/Meta-Llama-3-8B-Instruct",
+            base_url="http://0.0.0.0:8000/v1"
+        )
+
+        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 converted to audio so don't include special characters in your answers. Respond to what the user said in a creative and helpful way.",
+            },
+        ]
+
+        tma_in = LLMUserResponseAggregator(messages)
+        tma_out = LLMAssistantResponseAggregator(messages)
+
+        pipeline = Pipeline([
+            transport.input(),   # Transport user input
+            tma_in,              # User responses
+            llm,                 # LLM
+            tts,                 # TTS
+            transport.output(),  # Transport bot output
+            tma_out              # Assistant spoken responses
+        ])
+
+        task = PipelineTask(pipeline, PipelineParams(allow_interruptions=True, enable_metrics=True))
+
+        # When a participant joins, start transcription for that participant so the
+        # bot can "hear" and respond to them.
+        @transport.event_handler("on_participant_joined")
+        async def on_participant_joined(transport, participant):
+            transport.capture_participant_transcription(participant["id"])
+
+        # When the first participant joins, the bot should introduce itself.
+        @transport.event_handler("on_first_participant_joined")
+        async def on_first_participant_joined(transport, participant):
+            messages.append(
+                {"role": "system", "content": "Please introduce yourself to the user."})
+            await task.queue_frames([LLMMessagesFrame(messages)])
+
+        # Handle "latency-ping" messages. The client will send app messages that look like
+        # this:
+        #   { "latency-ping": { ts: <client-side timestamp> }}
+        #
+        # We want to send an immediate pong back to the client from this handler function.
+        # Also, we will push a frame into the top of the pipeline and send it after the
+        #
+        @transport.event_handler("on_app_message")
+        async def on_app_message(transport, message, sender):
+            try:
+                if "latency-ping" in message:
+                    logger.debug(f"Received latency ping app message: {message}")
+                    ts = message["latency-ping"]["ts"]
+                    # Send immediately
+                    transport.output().send_message(DailyTransportMessageFrame(
+                        message={"latency-pong-msg-handler": {"ts": ts}},
+                        participant_id=sender))
+                    # And push to the pipeline for the Daily transport.output to send
+                    await tma_in.push_frame(
+                        DailyTransportMessageFrame(
+                            message={"latency-pong-pipeline-delivery": {"ts": ts}},
+                            participant_id=sender))
+            except Exception as e:
+                logger.debug(f"message handling error: {e} - {message}")
+
+        runner = PipelineRunner()
+        await runner.run(task)
+
+
+if __name__ == "__main__":
+    (url, token) = configure()
+    asyncio.run(main(url, token))

examples/foundational/websocket-server/frames.proto

@@ -1,25 +0,0 @@
-syntax = "proto3";
-
-package pipecat_proto;
-
-message TextFrame {
-    string text = 1;
-}
-
-message AudioFrame {
-    bytes audio = 1;
-}
-
-message TranscriptionFrame {
-    string text = 1;
-    string participant_id = 2;
-    string timestamp = 3;
-}
-
-message Frame {
-    oneof frame {
-        TextFrame text = 1;
-        AudioFrame audio = 2;
-        TranscriptionFrame transcription = 3;
-    }
-}

examples/foundational/websocket-server/index.html

@@ -1,134 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <script src="//cdn.jsdelivr.net/npm/protobufjs@7.X.X/dist/protobuf.min.js"></script>
-    <title>WebSocket Audio Stream</title>
-</head>
-
-<body>
-    <h1>WebSocket Audio Stream</h1>
-    <button id="startAudioBtn">Start Audio</button>
-    <button id="stopAudioBtn">Stop Audio</button>
-    <script>
-        const SAMPLE_RATE = 16000;
-        const BUFFER_SIZE = 8192;
-        const MIN_AUDIO_SIZE = 6400;
-
-        let audioContext;
-        let microphoneStream;
-        let scriptProcessor;
-        let source;
-        let frame;
-        let audioChunks = [];
-        let isPlaying = false;
-        let ws;
-
-        const proto = protobuf.load("frames.proto", (err, root) => {
-            if (err) throw err;
-            frame = root.lookupType("pipecat_proto.Frame");
-        });
-
-        function initWebSocket() {
-            ws = new WebSocket('ws://localhost:8765');
-
-            ws.addEventListener('open', () => console.log('WebSocket connection established.'));
-            ws.addEventListener('message', handleWebSocketMessage);
-            ws.addEventListener('close', (event) => console.log("WebSocket connection closed.", event.code, event.reason));
-            ws.addEventListener('error', (event) => console.error('WebSocket error:', event));
-        }
-
-        async function handleWebSocketMessage(event) {
-            const arrayBuffer = await event.data.arrayBuffer();
-            enqueueAudioFromProto(arrayBuffer);
-        }
-
-        function enqueueAudioFromProto(arrayBuffer) {
-            const parsedFrame = frame.decode(new Uint8Array(arrayBuffer));
-            if (!parsedFrame?.audio) return false;
-
-            const frameCount = parsedFrame.audio.data.length / 2;
-            const audioOutBuffer = audioContext.createBuffer(1, frameCount, SAMPLE_RATE);
-            const nowBuffering = audioOutBuffer.getChannelData(0);
-            const view = new Int16Array(parsedFrame.audio.data.buffer);
-
-            for (let i = 0; i < frameCount; i++) {
-                const word = view[i];
-                nowBuffering[i] = ((word + 32768) % 65536 - 32768) / 32768.0;
-            }
-
-            audioChunks.push(audioOutBuffer);
-            if (!isPlaying) playNextChunk();
-        }
-
-        function playNextChunk() {
-            if (audioChunks.length === 0) {
-                isPlaying = false;
-                return;
-            }
-
-            isPlaying = true;
-            const audioOutBuffer = audioChunks.shift();
-            const source = audioContext.createBufferSource();
-            source.buffer = audioOutBuffer;
-            source.connect(audioContext.destination);
-            source.onended = playNextChunk;
-            source.start();
-        }
-
-        function startAudio() {
-            if (!navigator.mediaDevices || !navigator.mediaDevices.getUserMedia) {
-                alert('getUserMedia is not supported in your browser.');
-                return;
-            }
-
-            navigator.mediaDevices.getUserMedia({ audio: true })
-                .then((stream) => {
-                    microphoneStream = stream;
-                    audioContext = new (window.AudioContext || window.webkitAudioContext)();
-                    scriptProcessor = audioContext.createScriptProcessor(BUFFER_SIZE, 1, 1);
-                    source = audioContext.createMediaStreamSource(stream);
-                    source.connect(scriptProcessor);
-                    scriptProcessor.connect(audioContext.destination);
-
-                    const audioBuffer = [];
-                    const skipRatio = Math.floor(audioContext.sampleRate / (SAMPLE_RATE * 2));
-
-                    scriptProcessor.onaudioprocess = (event) => {
-                        const rawLeftChannelData = event.inputBuffer.getChannelData(0);
-                        for (let i = 0; i < rawLeftChannelData.length; i += skipRatio) {
-                            const normalized = ((rawLeftChannelData[i] * 32768.0) + 32768) % 65536 - 32768;
-                            const swappedBytes = ((normalized & 0xff) << 8) | ((normalized >> 8) & 0xff);
-                            audioBuffer.push(swappedBytes);
-                        }
-
-                        if (audioBuffer.length >= MIN_AUDIO_SIZE) {
-                            const audioFrame = frame.create({ audio: { audio: audioBuffer.slice(0, MIN_AUDIO_SIZE) } });
-                            const encodedFrame = new Uint8Array(frame.encode(audioFrame).finish());
-                            ws.send(encodedFrame);
-                            audioBuffer.splice(0, MIN_AUDIO_SIZE);
-                        }
-                    };
-
-                    initWebSocket();
-                })
-                .catch((error) => console.error('Error accessing microphone:', error));
-        }
-
-        function stopAudio() {
-            if (ws) {
-                ws.close();
-                scriptProcessor.disconnect();
-                source.disconnect();
-                ws = undefined;
-            }
-        }
-
-        document.getElementById('startAudioBtn').addEventListener('click', startAudio);
-        document.getElementById('stopAudioBtn').addEventListener('click', stopAudio);
-    </script>
-</body>
-
-</html>

examples/foundational/websocket-server/sample.py

@@ -1,50 +0,0 @@
-import asyncio
-import aiohttp
-import logging
-import os
-from pipecat.pipeline.frame_processor import FrameProcessor
-from pipecat.pipeline.frames import TextFrame, TranscriptionFrame
-from pipecat.pipeline.pipeline import Pipeline
-from pipecat.services.elevenlabs_ai_services import ElevenLabsTTSService
-from pipecat.transports.websocket_transport import WebsocketTransport
-from pipecat.services.whisper_ai_services import WhisperSTTService
-
-logging.basicConfig(format="%(levelno)s %(asctime)s %(message)s")
-logger = logging.getLogger("pipecat")
-logger.setLevel(logging.DEBUG)
-
-
-class WhisperTranscriber(FrameProcessor):
-    async def process_frame(self, frame):
-        if isinstance(frame, TranscriptionFrame):
-            print(f"Transcribed: {frame.text}")
-        else:
-            yield frame
-
-
-async def main():
-    async with aiohttp.ClientSession() as session:
-        transport = WebsocketTransport(
-            mic_enabled=True,
-            speaker_enabled=True,
-        )
-        tts = ElevenLabsTTSService(
-            aiohttp_session=session,
-            api_key=os.getenv("ELEVENLABS_API_KEY"),
-            voice_id=os.getenv("ELEVENLABS_VOICE_ID"),
-        )
-
-        pipeline = Pipeline([
-            WhisperSTTService(),
-            WhisperTranscriber(),
-            tts,
-        ])
-
-        @transport.on_connection
-        async def queue_frame():
-            await pipeline.queue_frames([TextFrame("Hello there!")])
-
-        await transport.run(pipeline)
-
-if __name__ == "__main__":
-    asyncio.run(main())

examples/moondream-chatbot/bot.py

@@ -74,6 +74,8 @@ class TalkingAnimation(FrameProcessor):
         self._is_talking = False
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, AudioRawFrame):
             if not self._is_talking:
                 await self.push_frame(talking_frame)
@@ -93,6 +95,8 @@ class UserImageRequester(FrameProcessor):
         self.participant_id = participant_id
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if self.participant_id and isinstance(frame, TextFrame):
             if frame.text == user_request_answer:
                 await self.push_frame(UserImageRequestFrame(self.participant_id), FrameDirection.UPSTREAM)
@@ -107,6 +111,8 @@ class TextFilterProcessor(FrameProcessor):
         self.text = text
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, TextFrame):
             if frame.text != self.text:
                 await self.push_frame(frame)
@@ -116,6 +122,8 @@ class TextFilterProcessor(FrameProcessor):
 
 class ImageFilterProcessor(FrameProcessor):
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if not isinstance(frame, ImageRawFrame):
             await self.push_frame(frame)
 
@@ -145,7 +153,7 @@ async def main(room_url: str, token):
 
         llm = OpenAILLMService(
             api_key=os.getenv("OPENAI_API_KEY"),
-            model="gpt-4-turbo-preview")
+            model="gpt-4o")
 
         ta = TalkingAnimation()
 

examples/patient-intake/bot.py

@@ -1,11 +1,15 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
 import asyncio
 import aiohttp
-import copy
-import json
 import os
-import re
 import sys
 import wave
+
 from typing import List
 
 from openai._types import NotGiven, NOT_GIVEN
@@ -14,23 +18,18 @@ from openai.types.chat import (
     ChatCompletionToolParam,
 )
 
+from pipecat.frames.frames import AudioRawFrame
 from pipecat.pipeline.pipeline import Pipeline
 from pipecat.pipeline.runner import PipelineRunner
-from pipecat.pipeline.task import PipelineTask
+from pipecat.pipeline.task import PipelineParams, PipelineTask
 from pipecat.processors.aggregators.llm_response import LLMUserContextAggregator, LLMAssistantContextAggregator
 from pipecat.processors.logger import FrameLogger
-from pipecat.frames.frames import (
-    Frame,
-    LLMMessagesFrame,
-    AudioRawFrame,
-)
-from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
+from pipecat.processors.frame_processor import FrameDirection
 from pipecat.services.elevenlabs import ElevenLabsTTSService
-from pipecat.services.openai import OpenAILLMService
+from pipecat.services.openai import OpenAILLMContext, OpenAILLMContextFrame, OpenAILLMService
 from pipecat.services.ai_services import AIService
-from pipecat.transports.services.daily import DailyParams, DailyTranscriptionSettings, DailyTransport
+from pipecat.transports.services.daily import DailyParams, DailyTransport
 from pipecat.vad.silero import SileroVADAnalyzer
-from pipecat.services.openai import OpenAILLMContext, OpenAILLMContextFrame
 
 from runner import configure
 
@@ -242,7 +241,6 @@ class IntakeProcessor:
         self._context.add_message(
             {"role": "system", "content": "Finally, ask the user the reason for their doctor visit today. Once they answer, call the list_visit_reasons function."})
         await llm.process_frame(OpenAILLMContextFrame(self._context), FrameDirection.DOWNSTREAM)
-        pass
 
     async def start_visit_reasons(self, llm):
         print("!!! doing start visit reasons")
@@ -251,7 +249,6 @@ class IntakeProcessor:
         self._context.add_message({"role": "system",
                                    "content": "Now, thank the user and end the conversation."})
         await llm.process_frame(OpenAILLMContextFrame(self._context), FrameDirection.DOWNSTREAM)
-        pass
 
     async def save_data(self, llm, args):
         logger.info(f"!!! Saving data: {args}")
@@ -305,12 +302,10 @@ async def main(room_url: str, token):
             model="gpt-4o")
 
         messages = []
-        context = OpenAILLMContext(
-            messages=messages,
-        )
+        context = OpenAILLMContext(messages=messages)
         user_context = LLMUserContextAggregator(context)
         assistant_context = LLMAssistantContextAggregator(context)
-        # checklist = ChecklistProcessor(context, llm)
+
         intake = IntakeProcessor(context, llm)
         llm.register_function("verify_birthday", intake.verify_birthday)
         llm.register_function(
@@ -329,19 +324,20 @@ async def main(room_url: str, token):
             "list_visit_reasons",
             intake.save_data,
             start_callback=intake.start_visit_reasons)
+
         fl = FrameLogger("LLM Output")
 
         pipeline = Pipeline([
-            transport.input(),
-            user_context,
-            llm,
-            fl,
-            tts,
-            transport.output(),
-            assistant_context,
+            transport.input(),   # Transport input
+            user_context,        # User responses
+            llm,                 # LLM
+            fl,                  # Frame logger
+            tts,                 # TTS
+            transport.output(),  # Transport output
+            assistant_context,   # Assistant responses
         ])
 
-        task = PipelineTask(pipeline, allow_interruptions=False)
+        task = PipelineTask(pipeline, PipelineParams(allow_interruptions=False))
 
         @transport.event_handler("on_first_participant_joined")
         async def on_first_participant_joined(transport, participant):

examples/simple-chatbot/bot.py

@@ -64,6 +64,8 @@ class TalkingAnimation(FrameProcessor):
         self._is_talking = False
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, AudioRawFrame):
             if not self._is_talking:
                 await self.push_frame(talking_frame)
@@ -117,7 +119,7 @@ async def main(room_url: str, token):
 
         llm = OpenAILLMService(
             api_key=os.getenv("OPENAI_API_KEY"),
-            model="gpt-4-turbo-preview")
+            model="gpt-4o")
 
         messages = [
             {

examples/storytelling-chatbot/frontend/yarn.lock

@@ -899,11 +899,11 @@ brace-expansion@^2.0.1:
     balanced-match "^1.0.0"
 
 braces@^3.0.2, braces@~3.0.2:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/braces/-/braces-3.0.2.tgz#3454e1a462ee8d599e236df336cd9ea4f8afe107"
-  integrity sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/braces/-/braces-3.0.3.tgz#490332f40919452272d55a8480adc0c441358789"
+  integrity "sha1-SQMy9AkZRSJy1VqEgK3AxEE1h4k= sha512-yQbXgO/OSZVD2IsiLlro+7Hf6Q18EJrKSEsdoMzKePKXct3gvD8oLcOQdIzGupr5Fj+EDe8gO/lxc1BzfMpxvA=="
   dependencies:
-    fill-range "^7.0.1"
+    fill-range "^7.1.1"
 
 browserslist@^4.23.0:
   version "4.23.0"
@@ -1551,10 +1551,10 @@ file-entry-cache@^6.0.1:
   dependencies:
     flat-cache "^3.0.4"
 
-fill-range@^7.0.1:
-  version "7.0.1"
-  resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-7.0.1.tgz#1919a6a7c75fe38b2c7c77e5198535da9acdda40"
-  integrity sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==
+fill-range@^7.1.1:
+  version "7.1.1"
+  resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-7.1.1.tgz#44265d3cac07e3ea7dc247516380643754a05292"
+  integrity "sha1-RCZdPKwH4+p9wkdRY4BkN1SgUpI= sha512-YsGpe3WHLK8ZYi4tWDg2Jy3ebRz2rXowDxnld4bkQB00cc/1Zw9AWnC0i9ztDJitivtQvaI9KaLyKrc+hBW0yg=="
   dependencies:
     to-regex-range "^5.0.1"
 

examples/storytelling-chatbot/src/bot.py

@@ -56,7 +56,7 @@ async def main(room_url, token=None):
 
         llm_service = OpenAILLMService(
             api_key=os.getenv("OPENAI_API_KEY"),
-            model="gpt-4-turbo"
+            model="gpt-4o"
         )
 
         tts_service = ElevenLabsTTSService(

examples/storytelling-chatbot/src/processors.py

@@ -52,6 +52,8 @@ class StoryImageProcessor(FrameProcessor):
         self._fal_service = fal_service
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, StoryImageFrame):
             try:
                 async with timeout(7):
@@ -86,6 +88,8 @@ class StoryProcessor(FrameProcessor):
         self._story = story
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, UserStoppedSpeakingFrame):
             # Send an app message to the UI
             await self.push_frame(DailyTransportMessageFrame(CUE_ASSISTANT_TURN))

examples/translation-chatbot/bot.py

@@ -40,6 +40,8 @@ class TranslationProcessor(FrameProcessor):
         self._language = language
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, TextFrame):
             context = [
                 {
@@ -65,6 +67,8 @@ class TranslationSubtitles(FrameProcessor):
     # subtitles.
     #
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, TextFrame):
             message = {
                 "language": self._language,
@@ -97,7 +101,8 @@ async def main(room_url: str, token):
         )
 
         llm = OpenAILLMService(
-            api_key=os.getenv("OPENAI_API_KEY"), model="gpt-4-turbo-preview"
+            api_key=os.getenv("OPENAI_API_KEY"),
+            model="gpt-4o"
         )
 
         sa = SentenceAggregator()

examples/twilio-chatbot/.gitignore

@@ -0,0 +1,161 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+runpod.toml

examples/twilio-chatbot/Dockerfile

@@ -0,0 +1,20 @@
+# Use an official Python runtime as a parent image
+FROM python:3.10-bullseye
+
+# Set the working directory in the container
+WORKDIR /twilio-chatbot
+
+# Copy the requirements file into the container
+COPY requirements.txt .
+
+# Install any needed packages specified in requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy the current directory contents into the container
+COPY . .
+
+# Expose the desired port
+EXPOSE 8765
+
+# Run the application
+CMD ["uvicorn", "server:app", "--host", "0.0.0.0", "--port", "8765"]

examples/twilio-chatbot/README.md

@@ -0,0 +1,82 @@
+# Twilio Chatbot
+
+This project is a FastAPI-based chatbot that integrates with Twilio to handle WebSocket connections and provide real-time communication. The project includes endpoints for starting a call and handling WebSocket connections.
+
+## Table of Contents
+
+- [Features](#features)
+- [Requirements](#requirements)
+- [Installation](#installation)
+- [Configure Twilio URLs](#configure-twilio-urls)
+- [Running the Application](#running-the-application)
+- [Usage](#usage)
+
+## Features
+
+- **FastAPI**: A modern, fast (high-performance), web framework for building APIs with Python 3.6+.
+- **WebSocket Support**: Real-time communication using WebSockets.
+- **CORS Middleware**: Allowing cross-origin requests for testing.
+- **Dockerized**: Easily deployable using Docker.
+
+## Requirements
+
+- Python 3.10
+- Docker (for containerized deployment)
+- ngrok (for tunneling)
+- Twilio Account
+
+## Installation
+
+1. **Set up a virtual environment** (optional but recommended):
+    ```sh
+    python -m venv venv
+    source venv/bin/activate  # On Windows, use `venv\Scripts\activate`
+    ```
+
+2. **Install dependencies**:
+    ```sh
+    pip install -r requirements.txt
+    ```
+
+3. **Create .env**:
+    create .env based on env.example
+
+4. **Install ngrok**:
+    Follow the instructions on the [ngrok website](https://ngrok.com/download) to download and install ngrok.
+
+## Configure Twilio URLs
+
+1. **Update the Twilio Webhook**:
+    Copy the ngrok URL and update your Twilio phone number webhook URL to `http://<ngrok_url>/start_call`.
+
+2. **Update the streams.xml**:
+    Copy the ngrok URL and update templates/streams.xml with `wss://<ngrok_url>/ws`.
+
+## Running the Application
+
+### Using Python
+
+1. **Run the FastAPI application**:
+    ```sh
+    python server.py
+    ```
+
+2. **Start ngrok**:
+    In a new terminal, start ngrok to tunnel the local server:
+    ```sh
+    ngrok http 8765
+    ```
+### Using Docker
+
+1. **Build the Docker image**:
+    ```sh
+    docker build -t twilio-chatbot .
+    ```
+
+2. **Run the Docker container**:
+    ```sh
+    docker run -it --rm -p 8765:8765 twilio-chatbot
+    ```
+## Usage
+
+To start a call, simply make a call to your Twilio phone number. The webhook URL will direct the call to your FastAPI application, which will handle it accordingly.

examples/twilio-chatbot/bot.py

@@ -0,0 +1,90 @@
+import aiohttp
+import os
+import sys
+
+from pipecat.frames.frames import EndFrame, LLMMessagesFrame
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.task import PipelineParams, PipelineTask
+from pipecat.processors.aggregators.llm_response import (
+    LLMAssistantResponseAggregator,
+    LLMUserResponseAggregator
+)
+from pipecat.services.openai import OpenAILLMService
+from pipecat.services.deepgram import DeepgramSTTService
+from pipecat.services.elevenlabs import ElevenLabsTTSService
+from pipecat.transports.network.fastapi_websocket import FastAPIWebsocketTransport, FastAPIWebsocketParams
+from pipecat.vad.silero import SileroVADAnalyzer
+from pipecat.serializers.twilio import TwilioFrameSerializer
+
+from loguru import logger
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+logger.remove(0)
+logger.add(sys.stderr, level="DEBUG")
+
+
+async def run_bot(websocket_client, stream_sid):
+    async with aiohttp.ClientSession() as session:
+        transport = FastAPIWebsocketTransport(
+            websocket=websocket_client,
+            params=FastAPIWebsocketParams(
+                audio_out_enabled=True,
+                add_wav_header=False,
+                vad_enabled=True,
+                vad_analyzer=SileroVADAnalyzer(),
+                vad_audio_passthrough=True,
+                serializer=TwilioFrameSerializer(stream_sid)
+            )
+        )
+
+        llm = OpenAILLMService(
+            api_key=os.getenv("OPENAI_API_KEY"),
+            model="gpt-4o")
+
+        stt = DeepgramSTTService(api_key=os.getenv('DEEPGRAM_API_KEY'))
+
+        tts = ElevenLabsTTSService(
+            aiohttp_session=session,
+            api_key=os.getenv("ELEVENLABS_API_KEY"),
+            voice_id=os.getenv("ELEVENLABS_VOICE_ID"),
+        )
+
+        messages = [
+            {
+                "role": "system",
+                "content": "You are a helpful LLM in an audio call. Your goal is to demonstrate your capabilities in a succinct way. Your output will be converted to audio so don't include special characters in your answers. Respond to what the user said in a creative and helpful way.",
+            },
+        ]
+
+        tma_in = LLMUserResponseAggregator(messages)
+        tma_out = LLMAssistantResponseAggregator(messages)
+
+        pipeline = Pipeline([
+            transport.input(),   # Websocket input from client
+            stt,                 # Speech-To-Text
+            tma_in,              # User responses
+            llm,                 # LLM
+            tts,                 # Text-To-Speech
+            transport.output(),  # Websocket output to client
+            tma_out              # LLM responses
+        ])
+
+        task = PipelineTask(pipeline, params=PipelineParams(allow_interruptions=True))
+
+        @transport.event_handler("on_client_connected")
+        async def on_client_connected(transport, client):
+            # Kick off the conversation.
+            messages.append(
+                {"role": "system", "content": "Please introduce yourself to the user."})
+            await task.queue_frames([LLMMessagesFrame(messages)])
+
+        @transport.event_handler("on_client_disconnected")
+        async def on_client_disconnected(transport, client):
+            await task.queue_frames([EndFrame()])
+
+        runner = PipelineRunner(handle_sigint=False)
+
+        await runner.run(task)

examples/twilio-chatbot/env.example

@@ -0,0 +1,4 @@
+OPENAI_API_KEY=
+DEEPGRAM_API_KEY=
+ELEVENLABS_API_KEY=
+ELEVENLABS_VOICE_ID=

examples/twilio-chatbot/requirements.txt

@@ -0,0 +1,5 @@
+pipecat-ai[daily,openai,silero,deepgram]
+fastapi
+uvicorn
+python-dotenv
+loguru

examples/twilio-chatbot/server.py

@@ -0,0 +1,41 @@
+import json
+
+import uvicorn
+
+from fastapi import FastAPI, WebSocket
+from fastapi.middleware.cors import CORSMiddleware
+from starlette.responses import HTMLResponse
+
+from bot import run_bot
+
+app = FastAPI()
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],  # Allow all origins for testing
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+
+@app.post('/start_call')
+async def start_call():
+    print("POST TwiML")
+    return HTMLResponse(content=open("templates/streams.xml").read(), media_type="application/xml")
+
+
+@app.websocket("/ws")
+async def websocket_endpoint(websocket: WebSocket):
+    await websocket.accept()
+    start_data = websocket.iter_text()
+    await start_data.__anext__()
+    call_data = json.loads(await start_data.__anext__())
+    print(call_data, flush=True)
+    stream_sid = call_data['start']['streamSid']
+    print("WebSocket connection accepted")
+    await run_bot(websocket, stream_sid)
+
+
+if __name__ == "__main__":
+    uvicorn.run(app, host="0.0.0.0", port=8765)

examples/twilio-chatbot/templates/streams.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Response>
+  <Connect>
+    <Stream url="wss://<your server url>/ws"></Stream>
+  </Connect>
+  <Pause length="40"/>
+</Response>

examples/websocket-server/README.md

@@ -0,0 +1,27 @@
+# Websocket Server
+
+This is an example that shows how to use `WebsocketServerTransport` to communicate with a web client.
+
+## Get started
+
+```python
+python3 -m venv venv
+source venv/bin/activate
+pip install -r requirements.txt
+```
+
+## Run the bot
+
+```bash
+python bot.py
+```
+
+## Run the HTTP server
+
+This will host the static web client:
+
+```bash
+python -m http.server
+```
+
+Then, visit `http://localhost:8000` in your browser to start a session.

examples/websocket-server/bot.py

@@ -0,0 +1,93 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+import aiohttp
+import asyncio
+import os
+import sys
+
+from pipecat.frames.frames import LLMMessagesFrame
+from pipecat.pipeline.pipeline import Pipeline
+from pipecat.pipeline.runner import PipelineRunner
+from pipecat.pipeline.task import PipelineTask
+from pipecat.processors.aggregators.llm_response import (
+    LLMAssistantResponseAggregator,
+    LLMUserResponseAggregator
+)
+from pipecat.services.deepgram import DeepgramSTTService
+from pipecat.services.elevenlabs import ElevenLabsTTSService
+from pipecat.services.openai import OpenAILLMService
+from pipecat.transports.network.websocket_server import WebsocketServerParams, WebsocketServerTransport
+from pipecat.vad.silero import SileroVADAnalyzer
+
+from loguru import logger
+
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+logger.remove(0)
+logger.add(sys.stderr, level="DEBUG")
+
+
+async def main():
+    async with aiohttp.ClientSession() as session:
+        transport = WebsocketServerTransport(
+            params=WebsocketServerParams(
+                audio_out_enabled=True,
+                add_wav_header=True,
+                vad_enabled=True,
+                vad_analyzer=SileroVADAnalyzer(),
+                vad_audio_passthrough=True
+            )
+        )
+
+        llm = OpenAILLMService(
+            api_key=os.getenv("OPENAI_API_KEY"),
+            model="gpt-4o")
+
+        stt = DeepgramSTTService(api_key=os.getenv("DEEPGRAM_API_KEY"))
+
+        tts = ElevenLabsTTSService(
+            aiohttp_session=session,
+            api_key=os.getenv("ELEVENLABS_API_KEY"),
+            voice_id=os.getenv("ELEVENLABS_VOICE_ID"),
+        )
+
+        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 converted to audio so don't include special characters in your answers. Respond to what the user said in a creative and helpful way.",
+            },
+        ]
+
+        tma_in = LLMUserResponseAggregator(messages)
+        tma_out = LLMAssistantResponseAggregator(messages)
+
+        pipeline = Pipeline([
+            transport.input(),   # Websocket input from client
+            stt,                 # Speech-To-Text
+            tma_in,              # User responses
+            llm,                 # LLM
+            tts,                 # Text-To-Speech
+            transport.output(),  # Websocket output to client
+            tma_out              # LLM responses
+        ])
+
+        task = PipelineTask(pipeline)
+
+        @transport.event_handler("on_client_connected")
+        async def on_client_connected(transport, client):
+            # Kick off the conversation.
+            messages.append(
+                {"role": "system", "content": "Please introduce yourself to the user."})
+            await task.queue_frames([LLMMessagesFrame(messages)])
+
+        runner = PipelineRunner()
+
+        await runner.run(task)
+
+if __name__ == "__main__":
+    asyncio.run(main())

examples/websocket-server/frames.proto

@@ -0,0 +1,43 @@
+//
+// Copyright (c) 2024, Daily
+//
+// SPDX-License-Identifier: BSD 2-Clause License
+//
+
+// Generate frames_pb2.py with:
+//
+//   python -m grpc_tools.protoc --proto_path=./ --python_out=./protobufs frames.proto
+
+syntax = "proto3";
+
+package pipecat;
+
+message TextFrame {
+  uint64 id = 1;
+  string name = 2;
+  string text = 3;
+}
+
+message AudioRawFrame {
+  uint64 id = 1;
+  string name = 2;
+  bytes audio = 3;
+  uint32 sample_rate = 4;
+  uint32 num_channels = 5;
+}
+
+message TranscriptionFrame {
+  uint64 id = 1;
+  string name = 2;
+  string text = 3;
+  string user_id = 4;
+  string timestamp = 5;
+}
+
+message Frame {
+  oneof frame {
+    TextFrame text = 1;
+    AudioRawFrame audio = 2;
+    TranscriptionFrame transcription = 3;
+  }
+}

examples/websocket-server/index.html

@@ -0,0 +1,205 @@
+<!DOCTYPE html>
+<html lang="en">
+
+  <head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <script src="https://cdn.jsdelivr.net/npm/protobufjs@7.X.X/dist/protobuf.min.js"></script>
+    <title>Pipecat WebSocket Client Example</title>
+  </head>
+
+  <body>
+    <h1>Pipecat WebSocket Client Example</h1>
+    <h3><div id="progressText">Loading, wait...</div></h2>
+    <button id="startAudioBtn">Start Audio</button>
+    <button id="stopAudioBtn">Stop Audio</button>
+    <script>
+      const SAMPLE_RATE = 16000;
+      const NUM_CHANNELS = 1;
+      const PLAY_TIME_RESET_THRESHOLD_MS = 1.0;
+
+      // The protobuf type. We will load it later.
+      let Frame = null;
+
+      // The websocket connection.
+      let ws = null;
+
+      // The audio context
+      let audioContext = null;
+
+      // The audio context media stream source
+      let source = null;
+
+      // The microphone stream from getUserMedia. SHould be sampled to the
+      // proper sample rate.
+      let microphoneStream = null;
+
+      // Script processor to get data from microphone.
+      let scriptProcessor = null;
+
+      // AudioContext play time.
+      let playTime = 0;
+
+      // Last time we received a websocket message.
+      let lastMessageTime = 0;
+
+      // Whether we should be playing audio.
+      let isPlaying = false;
+
+      let startBtn = document.getElementById('startAudioBtn');
+      let stopBtn = document.getElementById('stopAudioBtn');
+
+      const proto = protobuf.load("frames.proto", (err, root) => {
+          if (err) {
+              throw err;
+          }
+          Frame = root.lookupType("pipecat.Frame");
+          const progressText = document.getElementById("progressText");
+          progressText.textContent = "We are ready! Make sure to run the server and then click `Start Audio`.";
+
+          startBtn.disabled = false;
+          stopBtn.disabled = true;
+      });
+
+      function initWebSocket() {
+          ws = new WebSocket('ws://localhost:8765');
+
+          ws.addEventListener('open', () => console.log('WebSocket connection established.'));
+          ws.addEventListener('message', handleWebSocketMessage);
+          ws.addEventListener('close', (event) => {
+              console.log("WebSocket connection closed.", event.code, event.reason);
+              stopAudio(false);
+          });
+          ws.addEventListener('error', (event) => console.error('WebSocket error:', event));
+      }
+
+      async function handleWebSocketMessage(event) {
+          const arrayBuffer = await event.data.arrayBuffer();
+          if (isPlaying) {
+              enqueueAudioFromProto(arrayBuffer);
+          }
+      }
+
+      function enqueueAudioFromProto(arrayBuffer) {
+          const parsedFrame = Frame.decode(new Uint8Array(arrayBuffer));
+          if (!parsedFrame?.audio) {
+              return false;
+          }
+
+          // Reset play time if it's been a while we haven't played anything.
+          const diffTime = audioContext.currentTime - lastMessageTime;
+          if ((playTime == 0) || (diffTime > PLAY_TIME_RESET_THRESHOLD_MS)) {
+              playTime = audioContext.currentTime;
+          }
+          lastMessageTime = audioContext.currentTime;
+
+          // We should be able to use parsedFrame.audio.audio.buffer but for
+          // some reason that contains all the bytes from the protobuf message.
+          const audioVector = Array.from(parsedFrame.audio.audio);
+          const audioArray = new Uint8Array(audioVector);
+
+          audioContext.decodeAudioData(audioArray.buffer, function(buffer) {
+              const source = new AudioBufferSourceNode(audioContext);
+              source.buffer = buffer;
+              source.start(playTime);
+              source.connect(audioContext.destination);
+              playTime = playTime + buffer.duration;
+          });
+      }
+
+      function convertFloat32ToS16PCM(float32Array) {
+          let int16Array = new Int16Array(float32Array.length);
+
+          for (let i = 0; i < float32Array.length; i++) {
+              let clampedValue = Math.max(-1, Math.min(1, float32Array[i]));
+              int16Array[i] = clampedValue < 0 ? clampedValue * 32768 : clampedValue * 32767;
+          }
+          return int16Array;
+      }
+
+      function startAudioBtnHandler() {
+          if (!navigator.mediaDevices || !navigator.mediaDevices.getUserMedia) {
+              alert('getUserMedia is not supported in your browser.');
+              return;
+          }
+
+          startBtn.disabled = true;
+          stopBtn.disabled = false;
+
+          audioContext = new (window.AudioContext || window.webkitAudioContext)({
+              latencyHint: "interactive",
+              sampleRate: SAMPLE_RATE
+          });
+
+          isPlaying = true;
+
+          initWebSocket();
+
+          navigator.mediaDevices.getUserMedia({
+              audio: {
+                  sampleRate: SAMPLE_RATE,
+                  channelCount: NUM_CHANNELS,
+                  autoGainControl: true,
+                  echoCancellation: true,
+                  noiseSuppression: true,
+              }
+          }).then((stream) => {
+              microphoneStream = stream;
+              // 512 is closest thing to 200ms.
+              scriptProcessor = audioContext.createScriptProcessor(512, 1, 1);
+              source = audioContext.createMediaStreamSource(stream);
+              source.connect(scriptProcessor);
+              scriptProcessor.connect(audioContext.destination);
+
+              scriptProcessor.onaudioprocess = (event) => {
+                  if (!ws) {
+                      return;
+                  }
+
+                  const audioData = event.inputBuffer.getChannelData(0);
+                  const pcmS16Array = convertFloat32ToS16PCM(audioData);
+                  const pcmByteArray = new Uint8Array(pcmS16Array.buffer);
+                  const frame = Frame.create({
+                      audio: {
+                          audio: Array.from(pcmByteArray),
+                          sampleRate: SAMPLE_RATE,
+                          numChannels: NUM_CHANNELS
+                      }
+                  });
+                  const encodedFrame = new Uint8Array(Frame.encode(frame).finish());
+                  ws.send(encodedFrame);
+              };
+          }).catch((error) => console.error('Error accessing microphone:', error));
+      }
+
+      function stopAudio(closeWebsocket) {
+          playTime = 0;
+          isPlaying = false;
+          startBtn.disabled = false;
+          stopBtn.disabled = true;
+
+          if (ws && closeWebsocket) {
+              ws.close();
+              ws = null;
+          }
+
+          if (scriptProcessor) {
+              scriptProcessor.disconnect();
+          }
+          if (source) {
+              source.disconnect();
+          }
+      }
+
+      function stopAudioBtnHandler() {
+          stopAudio(true);
+      }
+
+      startBtn.addEventListener('click', startAudioBtnHandler);
+      stopBtn.addEventListener('click', stopAudioBtnHandler);
+      startBtn.disabled = true;
+      stopBtn.disabled = true;
+    </script>
+  </body>
+
+</html>

examples/websocket-server/requirements.txt

@@ -0,0 +1,2 @@
+python-dotenv
+pipecat-ai[openai,silero,websocket,whisper]

linux-py3.10-requirements.txt

@@ -4,24 +4,39 @@
 #
 #    pip-compile --all-extras pyproject.toml
 #
+aiofiles==24.1.0
+    # via deepgram-sdk
 aiohttp==3.9.5
-    # via pipecat-ai (pyproject.toml)
+    # via
+    #   cartesia
+    #   deepgram-sdk
+    #   langchain
+    #   langchain-community
+    #   pipecat-ai (pyproject.toml)
 aiosignal==1.3.1
     # via aiohttp
 annotated-types==0.7.0
     # via pydantic
 anthropic==0.25.9
-    # via pipecat-ai (pyproject.toml)
+    # via
+    #   openpipe
+    #   pipecat-ai (pyproject.toml)
 anyio==4.4.0
     # via
     #   anthropic
     #   httpx
     #   openai
+    #   starlette
+    #   watchfiles
 async-timeout==4.0.3
-    # via aiohttp
+    # via
+    #   aiohttp
+    #   langchain
 attrs==23.2.0
-    # via aiohttp
-av==12.0.0
+    # via
+    #   aiohttp
+    #   openpipe
+av==12.1.0
     # via faster-whisper
 azure-cognitiveservices-speech==1.37.0
     # via pipecat-ai (pyproject.toml)
@@ -29,7 +44,9 @@ blinker==1.8.2
     # via flask
 cachetools==5.3.3
     # via google-auth
-certifi==2024.2.2
+cartesia==1.0.0
+    # via pipecat-ai (pyproject.toml)
+certifi==2024.6.2
     # via
     #   httpcore
     #   httpx
@@ -37,26 +54,45 @@ certifi==2024.2.2
 charset-normalizer==3.3.2
     # via requests
 click==8.1.7
-    # via flask
+    # via
+    #   flask
+    #   typer
+    #   uvicorn
 coloredlogs==15.0.1
     # via onnxruntime
-ctranslate2==4.2.1
+ctranslate2==4.3.1
     # via faster-whisper
-daily-python==0.9.0
+daily-python==0.10.1
+    # via pipecat-ai (pyproject.toml)
+dataclasses-json==0.6.7
+    # via
+    #   deepgram-sdk
+    #   langchain-community
+deepgram-sdk==3.2.7
     # via pipecat-ai (pyproject.toml)
 distro==1.9.0
     # via
     #   anthropic
     #   openai
+dnspython==2.6.1
+    # via email-validator
 einops==0.8.0
     # via pipecat-ai (pyproject.toml)
+email-validator==2.2.0
+    # via fastapi
 exceptiongroup==1.2.1
-    # via anyio
+    # via
+    #   anyio
+    #   pytest
 fal-client==0.4.0
     # via pipecat-ai (pyproject.toml)
+fastapi==0.111.0
+    # via pipecat-ai (pyproject.toml)
+fastapi-cli==0.0.4
+    # via fastapi
 faster-whisper==1.0.2
     # via pipecat-ai (pyproject.toml)
-filelock==3.14.0
+filelock==3.15.4
     # via
     #   huggingface-hub
     #   pyht
@@ -75,7 +111,7 @@ frozenlist==1.4.1
     # via
     #   aiohttp
     #   aiosignal
-fsspec==2024.5.0
+fsspec==2024.6.0
     # via
     #   huggingface-hub
     #   torch
@@ -83,14 +119,14 @@ future==1.0.0
     # via pyloudnorm
 google-ai-generativelanguage==0.6.4
     # via google-generativeai
-google-api-core[grpc]==2.19.0
+google-api-core[grpc]==2.19.1
     # via
     #   google-ai-generativelanguage
     #   google-api-python-client
     #   google-generativeai
-google-api-python-client==2.131.0
+google-api-python-client==2.134.0
     # via google-generativeai
-google-auth==2.29.0
+google-auth==2.30.0
     # via
     #   google-ai-generativelanguage
     #   google-api-core
@@ -101,11 +137,13 @@ google-auth-httplib2==0.2.0
     # via google-api-python-client
 google-generativeai==0.5.4
     # via pipecat-ai (pyproject.toml)
-googleapis-common-protos==1.63.0
+googleapis-common-protos==1.63.2
     # via
     #   google-api-core
     #   grpcio-status
-grpcio==1.64.0
+greenlet==3.0.3
+    # via sqlalchemy
+grpcio==1.64.1
     # via
     #   google-api-core
     #   grpcio-status
@@ -113,21 +151,29 @@ grpcio==1.64.0
 grpcio-status==1.62.2
     # via google-api-core
 h11==0.14.0
-    # via httpcore
+    # via
+    #   httpcore
+    #   uvicorn
 httpcore==1.0.5
     # via httpx
 httplib2==0.22.0
     # via
     #   google-api-python-client
     #   google-auth-httplib2
+httptools==0.6.1
+    # via uvicorn
 httpx==0.27.0
     # via
     #   anthropic
+    #   cartesia
+    #   deepgram-sdk
     #   fal-client
+    #   fastapi
     #   openai
+    #   openpipe
 httpx-sse==0.4.0
     # via fal-client
-huggingface-hub==0.23.2
+huggingface-hub==0.23.4
     # via
     #   faster-whisper
     #   timm
@@ -138,32 +184,71 @@ humanfriendly==10.0
 idna==3.7
     # via
     #   anyio
+    #   email-validator
     #   httpx
     #   requests
     #   yarl
+iniconfig==2.0.0
+    # via pytest
 itsdangerous==2.2.0
     # via flask
 jinja2==3.1.4
     # via
+    #   fastapi
     #   flask
     #   torch
+jsonpatch==1.33
+    # via langchain-core
+jsonpointer==3.0.0
+    # via jsonpatch
+langchain==0.2.5
+    # via
+    #   langchain-community
+    #   pipecat-ai (pyproject.toml)
+langchain-community==0.2.5
+    # via pipecat-ai (pyproject.toml)
+langchain-core==0.2.9
+    # via
+    #   langchain
+    #   langchain-community
+    #   langchain-openai
+    #   langchain-text-splitters
+langchain-openai==0.1.9
+    # via pipecat-ai (pyproject.toml)
+langchain-text-splitters==0.2.1
+    # via langchain
+langsmith==0.1.82
+    # via
+    #   langchain
+    #   langchain-community
+    #   langchain-core
 loguru==0.7.2
     # via pipecat-ai (pyproject.toml)
+markdown-it-py==3.0.0
+    # via rich
 markupsafe==2.1.5
     # via
     #   jinja2
     #   werkzeug
+marshmallow==3.21.3
+    # via dataclasses-json
+mdurl==0.1.2
+    # via markdown-it-py
 mpmath==1.3.0
     # via sympy
 multidict==6.0.5
     # via
     #   aiohttp
     #   yarl
+mypy-extensions==1.0.0
+    # via typing-inspect
 networkx==3.3
     # via torch
 numpy==1.26.4
     # via
     #   ctranslate2
+    #   langchain
+    #   langchain-community
     #   onnxruntime
     #   pipecat-ai (pyproject.toml)
     #   pyloudnorm
@@ -204,17 +289,31 @@ nvidia-nvtx-cu12==12.1.105
 onnxruntime==1.18.0
     # via faster-whisper
 openai==1.26.0
+    # via
+    #   langchain-openai
+    #   openpipe
+    #   pipecat-ai (pyproject.toml)
+openpipe==4.14.0
     # via pipecat-ai (pyproject.toml)
-packaging==24.0
+orjson==3.10.5
+    # via
+    #   fastapi
+    #   langsmith
+packaging==24.1
     # via
     #   huggingface-hub
+    #   langchain-core
+    #   marshmallow
     #   onnxruntime
+    #   pytest
     #   transformers
 pillow==10.3.0
     # via
     #   pipecat-ai (pyproject.toml)
     #   torchvision
-proto-plus==1.23.0
+pluggy==1.5.0
+    # via pytest
+proto-plus==1.24.0
     # via
     #   google-ai-generativelanguage
     #   google-api-core
@@ -226,6 +325,7 @@ protobuf==4.25.3
     #   googleapis-common-protos
     #   grpcio-status
     #   onnxruntime
+    #   pipecat-ai (pyproject.toml)
     #   proto-plus
     #   pyht
 pyasn1==0.6.0
@@ -236,53 +336,99 @@ pyasn1-modules==0.4.0
     # via google-auth
 pyaudio==0.2.14
     # via pipecat-ai (pyproject.toml)
-pydantic==2.7.2
+pydantic==2.7.4
     # via
     #   anthropic
+    #   fastapi
     #   google-generativeai
+    #   langchain
+    #   langchain-core
+    #   langsmith
     #   openai
-pydantic-core==2.18.3
+pydantic-core==2.18.4
     # via pydantic
+pygments==2.18.0
+    # via rich
 pyht==0.0.28
     # via pipecat-ai (pyproject.toml)
 pyloudnorm==0.1.1
     # via pipecat-ai (pyproject.toml)
 pyparsing==3.1.2
     # via httplib2
+pytest==8.2.2
+    # via pytest-asyncio
+pytest-asyncio==0.23.7
+    # via cartesia
+python-dateutil==2.9.0.post0
+    # via openpipe
 python-dotenv==1.0.1
-    # via pipecat-ai (pyproject.toml)
+    # via
+    #   pipecat-ai (pyproject.toml)
+    #   uvicorn
+python-multipart==0.0.9
+    # via fastapi
 pyyaml==6.0.1
     # via
     #   ctranslate2
     #   huggingface-hub
+    #   langchain
+    #   langchain-community
+    #   langchain-core
     #   timm
     #   transformers
+    #   uvicorn
 regex==2024.5.15
-    # via transformers
-requests==2.32.2
     # via
+    #   tiktoken
+    #   transformers
+requests==2.32.3
+    # via
+    #   cartesia
     #   google-api-core
     #   huggingface-hub
+    #   langchain
+    #   langchain-community
+    #   langsmith
     #   pyht
+    #   tiktoken
     #   transformers
+rich==13.7.1
+    # via typer
 rsa==4.9
     # via google-auth
 safetensors==0.4.3
     # via
     #   timm
     #   transformers
-scipy==1.13.1
+scipy==1.14.0
     # via pyloudnorm
+shellingham==1.5.4
+    # via typer
+six==1.16.0
+    # via python-dateutil
 sniffio==1.3.1
     # via
     #   anthropic
     #   anyio
     #   httpx
     #   openai
-sympy==1.12
+sqlalchemy==2.0.31
+    # via
+    #   langchain
+    #   langchain-community
+starlette==0.37.2
+    # via fastapi
+sympy==1.12.1
     # via
     #   onnxruntime
     #   torch
+tenacity==8.4.2
+    # via
+    #   langchain
+    #   langchain-community
+    #   langchain-core
+tiktoken==0.7.0
+    # via langchain-openai
 timm==0.9.16
     # via pipecat-ai (pyproject.toml)
 tokenizers==0.19.1
@@ -290,15 +436,17 @@ tokenizers==0.19.1
     #   anthropic
     #   faster-whisper
     #   transformers
-torch==2.3.0
+tomli==2.0.1
+    # via pytest
+torch==2.3.1
     # via
     #   pipecat-ai (pyproject.toml)
     #   timm
     #   torchaudio
     #   torchvision
-torchaudio==2.3.0
+torchaudio==2.3.1
     # via pipecat-ai (pyproject.toml)
-torchvision==0.18.0
+torchvision==0.18.1
     # via timm
 tqdm==4.66.4
     # via
@@ -308,25 +456,49 @@ tqdm==4.66.4
     #   transformers
 transformers==4.40.2
     # via pipecat-ai (pyproject.toml)
-triton==2.3.0
+triton==2.3.1
     # via torch
-typing-extensions==4.11.0
+typer==0.12.3
+    # via fastapi-cli
+typing-extensions==4.12.2
     # via
     #   anthropic
     #   anyio
+    #   deepgram-sdk
+    #   fastapi
     #   google-generativeai
     #   huggingface-hub
     #   openai
     #   pipecat-ai (pyproject.toml)
     #   pydantic
     #   pydantic-core
+    #   sqlalchemy
     #   torch
+    #   typer
+    #   typing-inspect
+    #   uvicorn
+typing-inspect==0.9.0
+    # via dataclasses-json
+ujson==5.10.0
+    # via fastapi
 uritemplate==4.1.1
     # via google-api-python-client
-urllib3==2.2.1
+urllib3==2.2.2
     # via requests
+uvicorn[standard]==0.30.1
+    # via fastapi
+uvloop==0.19.0
+    # via uvicorn
+verboselogs==1.7
+    # via deepgram-sdk
+watchfiles==0.22.0
+    # via uvicorn
 websockets==12.0
-    # via pipecat-ai (pyproject.toml)
+    # via
+    #   cartesia
+    #   deepgram-sdk
+    #   pipecat-ai (pyproject.toml)
+    #   uvicorn
 werkzeug==3.0.3
     # via flask
 yarl==1.9.4

macos-py3.10-requirements.txt

@@ -4,25 +4,38 @@
 #
 #    pip-compile --all-extras pyproject.toml
 #
+aiofiles==24.1.0
+    # via deepgram-sdk
 aiohttp==3.9.5
     # via
     #   cartesia
+    #   deepgram-sdk
+    #   langchain
+    #   langchain-community
     #   pipecat-ai (pyproject.toml)
 aiosignal==1.3.1
     # via aiohttp
 annotated-types==0.7.0
     # via pydantic
 anthropic==0.25.9
-    # via pipecat-ai (pyproject.toml)
+    # via
+    #   openpipe
+    #   pipecat-ai (pyproject.toml)
 anyio==4.4.0
     # via
     #   anthropic
     #   httpx
     #   openai
+    #   starlette
+    #   watchfiles
 async-timeout==4.0.3
-    # via aiohttp
+    # via
+    #   aiohttp
+    #   langchain
 attrs==23.2.0
-    # via aiohttp
+    # via
+    #   aiohttp
+    #   openpipe
 av==12.1.0
     # via faster-whisper
 azure-cognitiveservices-speech==1.37.0
@@ -31,40 +44,55 @@ blinker==1.8.2
     # via flask
 cachetools==5.3.3
     # via google-auth
-cartesia==0.1.0
+cartesia==1.0.0
     # via pipecat-ai (pyproject.toml)
-certifi==2024.2.2
+certifi==2024.6.2
     # via
     #   httpcore
     #   httpx
     #   requests
-cffi==1.16.0
-    # via sounddevice
 charset-normalizer==3.3.2
     # via requests
 click==8.1.7
-    # via flask
+    # via
+    #   flask
+    #   typer
+    #   uvicorn
 coloredlogs==15.0.1
     # via onnxruntime
-ctranslate2==4.2.1
+ctranslate2==4.3.1
     # via faster-whisper
-daily-python==0.9.1
+daily-python==0.10.1
+    # via pipecat-ai (pyproject.toml)
+dataclasses-json==0.6.7
+    # via
+    #   deepgram-sdk
+    #   langchain-community
+deepgram-sdk==3.2.7
     # via pipecat-ai (pyproject.toml)
 distro==1.9.0
     # via
     #   anthropic
     #   openai
+dnspython==2.6.1
+    # via email-validator
 einops==0.8.0
     # via pipecat-ai (pyproject.toml)
+email-validator==2.2.0
+    # via fastapi
 exceptiongroup==1.2.1
     # via
     #   anyio
     #   pytest
 fal-client==0.4.0
     # via pipecat-ai (pyproject.toml)
+fastapi==0.111.0
+    # via pipecat-ai (pyproject.toml)
+fastapi-cli==0.0.4
+    # via fastapi
 faster-whisper==1.0.2
     # via pipecat-ai (pyproject.toml)
-filelock==3.14.0
+filelock==3.15.4
     # via
     #   huggingface-hub
     #   pyht
@@ -82,7 +110,7 @@ frozenlist==1.4.1
     # via
     #   aiohttp
     #   aiosignal
-fsspec==2024.5.0
+fsspec==2024.6.0
     # via
     #   huggingface-hub
     #   torch
@@ -90,14 +118,14 @@ future==1.0.0
     # via pyloudnorm
 google-ai-generativelanguage==0.6.4
     # via google-generativeai
-google-api-core[grpc]==2.19.0
+google-api-core[grpc]==2.19.1
     # via
     #   google-ai-generativelanguage
     #   google-api-python-client
     #   google-generativeai
-google-api-python-client==2.131.0
+google-api-python-client==2.134.0
     # via google-generativeai
-google-auth==2.29.0
+google-auth==2.30.0
     # via
     #   google-ai-generativelanguage
     #   google-api-core
@@ -108,11 +136,11 @@ google-auth-httplib2==0.2.0
     # via google-api-python-client
 google-generativeai==0.5.4
     # via pipecat-ai (pyproject.toml)
-googleapis-common-protos==1.63.0
+googleapis-common-protos==1.63.2
     # via
     #   google-api-core
     #   grpcio-status
-grpcio==1.64.0
+grpcio==1.64.1
     # via
     #   google-api-core
     #   grpcio-status
@@ -120,22 +148,29 @@ grpcio==1.64.0
 grpcio-status==1.62.2
     # via google-api-core
 h11==0.14.0
-    # via httpcore
+    # via
+    #   httpcore
+    #   uvicorn
 httpcore==1.0.5
     # via httpx
 httplib2==0.22.0
     # via
     #   google-api-python-client
     #   google-auth-httplib2
+httptools==0.6.1
+    # via uvicorn
 httpx==0.27.0
     # via
     #   anthropic
     #   cartesia
+    #   deepgram-sdk
     #   fal-client
+    #   fastapi
     #   openai
+    #   openpipe
 httpx-sse==0.4.0
     # via fal-client
-huggingface-hub==0.23.2
+huggingface-hub==0.23.4
     # via
     #   faster-whisper
     #   timm
@@ -146,6 +181,7 @@ humanfriendly==10.0
 idna==3.7
     # via
     #   anyio
+    #   email-validator
     #   httpx
     #   requests
     #   yarl
@@ -155,25 +191,61 @@ itsdangerous==2.2.0
     # via flask
 jinja2==3.1.4
     # via
+    #   fastapi
     #   flask
     #   torch
+jsonpatch==1.33
+    # via langchain-core
+jsonpointer==3.0.0
+    # via jsonpatch
+langchain==0.2.5
+    # via
+    #   langchain-community
+    #   pipecat-ai (pyproject.toml)
+langchain-community==0.2.5
+    # via pipecat-ai (pyproject.toml)
+langchain-core==0.2.9
+    # via
+    #   langchain
+    #   langchain-community
+    #   langchain-openai
+    #   langchain-text-splitters
+langchain-openai==0.1.10
+    # via pipecat-ai (pyproject.toml)
+langchain-text-splitters==0.2.1
+    # via langchain
+langsmith==0.1.82
+    # via
+    #   langchain
+    #   langchain-community
+    #   langchain-core
 loguru==0.7.2
     # via pipecat-ai (pyproject.toml)
+markdown-it-py==3.0.0
+    # via rich
 markupsafe==2.1.5
     # via
     #   jinja2
     #   werkzeug
+marshmallow==3.21.3
+    # via dataclasses-json
+mdurl==0.1.2
+    # via markdown-it-py
 mpmath==1.3.0
     # via sympy
 multidict==6.0.5
     # via
     #   aiohttp
     #   yarl
+mypy-extensions==1.0.0
+    # via typing-inspect
 networkx==3.3
     # via torch
 numpy==1.26.4
     # via
     #   ctranslate2
+    #   langchain
+    #   langchain-community
     #   onnxruntime
     #   pipecat-ai (pyproject.toml)
     #   pyloudnorm
@@ -183,10 +255,21 @@ numpy==1.26.4
 onnxruntime==1.18.0
     # via faster-whisper
 openai==1.26.0
+    # via
+    #   langchain-openai
+    #   openpipe
+    #   pipecat-ai (pyproject.toml)
+openpipe==4.14.0
     # via pipecat-ai (pyproject.toml)
-packaging==24.0
+orjson==3.10.5
+    # via
+    #   fastapi
+    #   langsmith
+packaging==24.1
     # via
     #   huggingface-hub
+    #   langchain-core
+    #   marshmallow
     #   onnxruntime
     #   pytest
     #   transformers
@@ -196,7 +279,7 @@ pillow==10.3.0
     #   torchvision
 pluggy==1.5.0
     # via pytest
-proto-plus==1.23.0
+proto-plus==1.24.0
     # via
     #   google-ai-generativelanguage
     #   google-api-core
@@ -208,6 +291,7 @@ protobuf==4.25.3
     #   googleapis-common-protos
     #   grpcio-status
     #   onnxruntime
+    #   pipecat-ai (pyproject.toml)
     #   proto-plus
     #   pyht
 pyasn1==0.6.0
@@ -218,62 +302,99 @@ pyasn1-modules==0.4.0
     # via google-auth
 pyaudio==0.2.14
     # via pipecat-ai (pyproject.toml)
-pycparser==2.22
-    # via cffi
-pydantic==2.7.2
+pydantic==2.7.4
     # via
     #   anthropic
+    #   fastapi
     #   google-generativeai
+    #   langchain
+    #   langchain-core
+    #   langsmith
     #   openai
-pydantic-core==2.18.3
+pydantic-core==2.18.4
     # via pydantic
+pygments==2.18.0
+    # via rich
 pyht==0.0.28
     # via pipecat-ai (pyproject.toml)
 pyloudnorm==0.1.1
     # via pipecat-ai (pyproject.toml)
 pyparsing==3.1.2
     # via httplib2
-pytest==8.2.1
+pytest==8.2.2
     # via pytest-asyncio
 pytest-asyncio==0.23.7
     # via cartesia
+python-dateutil==2.9.0.post0
+    # via openpipe
 python-dotenv==1.0.1
-    # via pipecat-ai (pyproject.toml)
+    # via
+    #   pipecat-ai (pyproject.toml)
+    #   uvicorn
+python-multipart==0.0.9
+    # via fastapi
 pyyaml==6.0.1
     # via
     #   ctranslate2
     #   huggingface-hub
+    #   langchain
+    #   langchain-community
+    #   langchain-core
     #   timm
     #   transformers
+    #   uvicorn
 regex==2024.5.15
-    # via transformers
+    # via
+    #   tiktoken
+    #   transformers
 requests==2.32.3
     # via
     #   cartesia
     #   google-api-core
     #   huggingface-hub
+    #   langchain
+    #   langchain-community
+    #   langsmith
     #   pyht
+    #   tiktoken
     #   transformers
+rich==13.7.1
+    # via typer
 rsa==4.9
     # via google-auth
 safetensors==0.4.3
     # via
     #   timm
     #   transformers
-scipy==1.13.1
+scipy==1.14.0
     # via pyloudnorm
+shellingham==1.5.4
+    # via typer
+six==1.16.0
+    # via python-dateutil
 sniffio==1.3.1
     # via
     #   anthropic
     #   anyio
     #   httpx
     #   openai
-sounddevice==0.4.7
-    # via pipecat-ai (pyproject.toml)
+sqlalchemy==2.0.31
+    # via
+    #   langchain
+    #   langchain-community
+starlette==0.37.2
+    # via fastapi
 sympy==1.12.1
     # via
     #   onnxruntime
     #   torch
+tenacity==8.4.2
+    # via
+    #   langchain
+    #   langchain-community
+    #   langchain-core
+tiktoken==0.7.0
+    # via langchain-openai
 timm==0.9.16
     # via pipecat-ai (pyproject.toml)
 tokenizers==0.19.1
@@ -283,15 +404,15 @@ tokenizers==0.19.1
     #   transformers
 tomli==2.0.1
     # via pytest
-torch==2.3.0
+torch==2.3.1
     # via
     #   pipecat-ai (pyproject.toml)
     #   timm
     #   torchaudio
     #   torchvision
-torchaudio==2.3.0
+torchaudio==2.3.1
     # via pipecat-ai (pyproject.toml)
-torchvision==0.18.0
+torchvision==0.18.1
     # via timm
 tqdm==4.66.4
     # via
@@ -301,25 +422,47 @@ tqdm==4.66.4
     #   transformers
 transformers==4.40.2
     # via pipecat-ai (pyproject.toml)
-typing-extensions==4.11.0
+typer==0.12.3
+    # via fastapi-cli
+typing-extensions==4.12.2
     # via
     #   anthropic
     #   anyio
+    #   deepgram-sdk
+    #   fastapi
     #   google-generativeai
     #   huggingface-hub
     #   openai
     #   pipecat-ai (pyproject.toml)
     #   pydantic
     #   pydantic-core
+    #   sqlalchemy
     #   torch
+    #   typer
+    #   typing-inspect
+    #   uvicorn
+typing-inspect==0.9.0
+    # via dataclasses-json
+ujson==5.10.0
+    # via fastapi
 uritemplate==4.1.1
     # via google-api-python-client
-urllib3==2.2.1
+urllib3==2.2.2
     # via requests
+uvicorn[standard]==0.30.1
+    # via fastapi
+uvloop==0.19.0
+    # via uvicorn
+verboselogs==1.7
+    # via deepgram-sdk
+watchfiles==0.22.0
+    # via uvicorn
 websockets==12.0
     # via
     #   cartesia
+    #   deepgram-sdk
     #   pipecat-ai (pyproject.toml)
+    #   uvicorn
 werkzeug==3.0.3
     # via flask
 yarl==1.9.4

pyproject.toml

@@ -24,8 +24,9 @@ dependencies = [
     "numpy~=1.26.4",
     "loguru~=0.7.0",
     "Pillow~=10.3.0",
+    "protobuf~=4.25.3",
     "pyloudnorm~=0.1.1",
-    "typing-extensions~=4.11.0",
+    "typing-extensions~=4.12.1",
 ]
 
 [project.urls]
@@ -35,18 +36,21 @@ Website = "https://pipecat.ai"
 [project.optional-dependencies]
 anthropic = [ "anthropic~=0.25.7" ]
 azure = [ "azure-cognitiveservices-speech~=1.37.0" ]
-cartesia = [ "numpy~=1.26.0", "sounddevice", "cartesia" ]
-daily = [ "daily-python~=0.9.0" ]
+cartesia = [ "cartesia~=1.0.0" ]
+daily = [ "daily-python~=0.10.1" ]
+deepgram = [ "deepgram-sdk~=3.2.7" ]
 examples = [ "python-dotenv~=1.0.0", "flask~=3.0.3", "flask_cors~=4.0.1" ]
 fal = [ "fal-client~=0.4.0" ]
 google = [ "google-generativeai~=0.5.3" ]
 fireworks = [ "openai~=1.26.0" ]
+langchain = [ "langchain~=0.2.1", "langchain-community~=0.2.1", "langchain-openai~=0.1.8" ]
 local = [ "pyaudio~=0.2.0" ]
 moondream = [ "einops~=0.8.0", "timm~=0.9.16", "transformers~=4.40.2" ]
 openai = [ "openai~=1.26.0" ]
+openpipe = [ "openpipe~=4.14.0" ]
 playht = [ "pyht~=0.0.28" ]
 silero = [ "torch~=2.3.0", "torchaudio~=2.3.0" ]
-websocket = [ "websockets~=12.0" ]
+websocket = [ "websockets~=12.0", "fastapi~=0.111.0" ]
 whisper = [ "faster-whisper~=1.0.2" ]
 
 [tool.setuptools.packages.find]

src/pipecat/frames/frames.proto

@@ -4,28 +4,40 @@
 // SPDX-License-Identifier: BSD 2-Clause License
 //
 
+// Generate frames_pb2.py with:
+//
+//   python -m grpc_tools.protoc --proto_path=./ --python_out=./protobufs frames.proto
+
 syntax = "proto3";
 
-package pipecat_proto;
+package pipecat;
 
 message TextFrame {
-    string text = 1;
+  uint64 id = 1;
+  string name = 2;
+  string text = 3;
 }
 
-message AudioFrame {
-    bytes data = 1;
+message AudioRawFrame {
+  uint64 id = 1;
+  string name = 2;
+  bytes audio = 3;
+  uint32 sample_rate = 4;
+  uint32 num_channels = 5;
 }
 
 message TranscriptionFrame {
-    string text = 1;
-    string participantId = 2;
-    string timestamp = 3;
+  uint64 id = 1;
+  string name = 2;
+  string text = 3;
+  string user_id = 4;
+  string timestamp = 5;
 }
 
 message Frame {
-    oneof frame {
-        TextFrame text = 1;
-        AudioFrame audio = 2;
-        TranscriptionFrame transcription = 3;
-    }
+  oneof frame {
+    TextFrame text = 1;
+    AudioRawFrame audio = 2;
+    TranscriptionFrame transcription = 3;
+  }
 }

src/pipecat/frames/frames.py

@@ -4,7 +4,7 @@
 # SPDX-License-Identifier: BSD 2-Clause License
 #
 
-from typing import Any, List, Tuple
+from typing import Any, List, Mapping, Tuple
 
 from dataclasses import dataclass, field
 
@@ -188,6 +188,8 @@ class SystemFrame(Frame):
 class StartFrame(SystemFrame):
     """This is the first frame that should be pushed down a pipeline."""
     allow_interruptions: bool = False
+    enable_metrics: bool = False
+    report_only_initial_ttfb: bool = False
 
 
 @dataclass
@@ -238,6 +240,13 @@ class StopInterruptionFrame(SystemFrame):
     pass
 
 
+@dataclass
+class MetricsFrame(SystemFrame):
+    """Emitted by processor that can compute metrics like latencies.
+    """
+    ttfb: Mapping[str, float]
+
+
 #
 # Control frames
 #

src/pipecat/frames/protobufs/frames_pb2.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 # Generated by the protocol buffer compiler.  DO NOT EDIT!
 # source: frames.proto
-# Protobuf Python Version: 4.25.3
+# Protobuf Python Version: 4.25.1
 """Generated protocol buffer code."""
 from google.protobuf import descriptor as _descriptor
 from google.protobuf import descriptor_pool as _descriptor_pool
@@ -14,19 +14,19 @@ _sym_db = _symbol_database.Default()
 
 
 
-DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\x0c\x66rames.proto\x12\rpipecat_proto\"\x19\n\tTextFrame\x12\x0c\n\x04text\x18\x01 \x01(\t\"\x1a\n\nAudioFrame\x12\x0c\n\x04\x64\x61ta\x18\x01 \x01(\x0c\"L\n\x12TranscriptionFrame\x12\x0c\n\x04text\x18\x01 \x01(\t\x12\x15\n\rparticipantId\x18\x02 \x01(\t\x12\x11\n\ttimestamp\x18\x03 \x01(\t\"\xa2\x01\n\x05\x46rame\x12(\n\x04text\x18\x01 \x01(\x0b\x32\x18.pipecat_proto.TextFrameH\x00\x12*\n\x05\x61udio\x18\x02 \x01(\x0b\x32\x19.pipecat_proto.AudioFrameH\x00\x12:\n\rtranscription\x18\x03 \x01(\x0b\x32!.pipecat_proto.TranscriptionFrameH\x00\x42\x07\n\x05\x66rameb\x06proto3')
+DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\x0c\x66rames.proto\x12\x07pipecat\"3\n\tTextFrame\x12\n\n\x02id\x18\x01 \x01(\x04\x12\x0c\n\x04name\x18\x02 \x01(\t\x12\x0c\n\x04text\x18\x03 \x01(\t\"c\n\rAudioRawFrame\x12\n\n\x02id\x18\x01 \x01(\x04\x12\x0c\n\x04name\x18\x02 \x01(\t\x12\r\n\x05\x61udio\x18\x03 \x01(\x0c\x12\x13\n\x0bsample_rate\x18\x04 \x01(\r\x12\x14\n\x0cnum_channels\x18\x05 \x01(\r\"`\n\x12TranscriptionFrame\x12\n\n\x02id\x18\x01 \x01(\x04\x12\x0c\n\x04name\x18\x02 \x01(\t\x12\x0c\n\x04text\x18\x03 \x01(\t\x12\x0f\n\x07user_id\x18\x04 \x01(\t\x12\x11\n\ttimestamp\x18\x05 \x01(\t\"\x93\x01\n\x05\x46rame\x12\"\n\x04text\x18\x01 \x01(\x0b\x32\x12.pipecat.TextFrameH\x00\x12\'\n\x05\x61udio\x18\x02 \x01(\x0b\x32\x16.pipecat.AudioRawFrameH\x00\x12\x34\n\rtranscription\x18\x03 \x01(\x0b\x32\x1b.pipecat.TranscriptionFrameH\x00\x42\x07\n\x05\x66rameb\x06proto3')
 
 _globals = globals()
 _builder.BuildMessageAndEnumDescriptors(DESCRIPTOR, _globals)
 _builder.BuildTopDescriptorsAndMessages(DESCRIPTOR, 'frames_pb2', _globals)
 if _descriptor._USE_C_DESCRIPTORS == False:
   DESCRIPTOR._options = None
-  _globals['_TEXTFRAME']._serialized_start=31
-  _globals['_TEXTFRAME']._serialized_end=56
-  _globals['_AUDIOFRAME']._serialized_start=58
-  _globals['_AUDIOFRAME']._serialized_end=84
-  _globals['_TRANSCRIPTIONFRAME']._serialized_start=86
-  _globals['_TRANSCRIPTIONFRAME']._serialized_end=162
-  _globals['_FRAME']._serialized_start=165
-  _globals['_FRAME']._serialized_end=327
+  _globals['_TEXTFRAME']._serialized_start=25
+  _globals['_TEXTFRAME']._serialized_end=76
+  _globals['_AUDIORAWFRAME']._serialized_start=78
+  _globals['_AUDIORAWFRAME']._serialized_end=177
+  _globals['_TRANSCRIPTIONFRAME']._serialized_start=179
+  _globals['_TRANSCRIPTIONFRAME']._serialized_end=275
+  _globals['_FRAME']._serialized_start=278
+  _globals['_FRAME']._serialized_end=425
 # @@protoc_insertion_point(module_scope)

src/pipecat/pipeline/base_pipeline.py

@@ -0,0 +1,21 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+from abc import abstractmethod
+
+from typing import List
+
+from pipecat.processors.frame_processor import FrameProcessor
+
+
+class BasePipeline(FrameProcessor):
+
+    def __init__(self):
+        super().__init__()
+
+    @abstractmethod
+    def processors_with_metrics(self) -> List[FrameProcessor]:
+        pass

src/pipecat/pipeline/parallel_pipeline.py

@@ -6,6 +6,10 @@
 
 import asyncio
 
+from itertools import chain
+from typing import List
+
+from pipecat.pipeline.base_pipeline import BasePipeline
 from pipecat.pipeline.pipeline import Pipeline
 from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
 from pipecat.frames.frames import CancelFrame, EndFrame, Frame, StartFrame
@@ -20,6 +24,8 @@ class Source(FrameProcessor):
         self._up_queue = upstream_queue
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         match direction:
             case FrameDirection.UPSTREAM:
                 await self._up_queue.put(frame)
@@ -34,6 +40,8 @@ class Sink(FrameProcessor):
         self._down_queue = downstream_queue
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         match direction:
             case FrameDirection.UPSTREAM:
                 await self.push_frame(frame, direction)
@@ -41,7 +49,7 @@ class Sink(FrameProcessor):
                 await self._down_queue.put(frame)
 
 
-class ParallelPipeline(FrameProcessor):
+class ParallelPipeline(BasePipeline):
     def __init__(self, *args):
         super().__init__()
 
@@ -77,6 +85,13 @@ class ParallelPipeline(FrameProcessor):
 
         logger.debug(f"Finished creating {self} pipelines")
 
+    #
+    # BasePipeline
+    #
+
+    def processors_with_metrics(self) -> List[FrameProcessor]:
+        return list(chain.from_iterable(p.processors_with_metrics() for p in self._pipelines))
+
     #
     # Frame processor
     #
@@ -90,6 +105,8 @@ class ParallelPipeline(FrameProcessor):
         self._down_task = loop.create_task(self._process_down_queue())
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, StartFrame):
             await self._start_tasks()
 

src/pipecat/pipeline/parallel_task.py

@@ -6,8 +6,10 @@
 
 import asyncio
 
+from itertools import chain
 from typing import List
 
+from pipecat.pipeline.base_pipeline import BasePipeline
 from pipecat.pipeline.pipeline import Pipeline
 from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
 from pipecat.frames.frames import Frame
@@ -22,6 +24,8 @@ class Source(FrameProcessor):
         self._up_queue = upstream_queue
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         match direction:
             case FrameDirection.UPSTREAM:
                 await self._up_queue.put(frame)
@@ -36,6 +40,8 @@ class Sink(FrameProcessor):
         self._down_queue = downstream_queue
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         match direction:
             case FrameDirection.UPSTREAM:
                 await self.push_frame(frame, direction)
@@ -43,7 +49,7 @@ class Sink(FrameProcessor):
                 await self._down_queue.put(frame)
 
 
-class ParallelTask(FrameProcessor):
+class ParallelTask(BasePipeline):
     def __init__(self, *args):
         super().__init__()
 
@@ -75,11 +81,20 @@ class ParallelTask(FrameProcessor):
             self._pipelines.append(pipeline)
         logger.debug(f"Finished creating {self} pipelines")
 
+    #
+    # BasePipeline
+    #
+
+    def processors_with_metrics(self) -> List[FrameProcessor]:
+        return list(chain.from_iterable(p.processors_with_metrics() for p in self._pipelines))
+
     #
     # Frame processor
     #
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if direction == FrameDirection.UPSTREAM:
             # If we get an upstream frame we process it in each sink.
             await asyncio.gather(*[s.process_frame(frame, direction) for s in self._sinks])

src/pipecat/pipeline/pipeline.py

@@ -4,11 +4,10 @@
 # SPDX-License-Identifier: BSD 2-Clause License
 #
 
-import asyncio
-
 from typing import Callable, Coroutine, List
 
 from pipecat.frames.frames import Frame
+from pipecat.pipeline.base_pipeline import BasePipeline
 from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
 
 
@@ -19,6 +18,8 @@ class PipelineSource(FrameProcessor):
         self._upstream_push_frame = upstream_push_frame
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         match direction:
             case FrameDirection.UPSTREAM:
                 await self._upstream_push_frame(frame, direction)
@@ -33,6 +34,8 @@ class PipelineSink(FrameProcessor):
         self._downstream_push_frame = downstream_push_frame
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         match direction:
             case FrameDirection.UPSTREAM:
                 await self.push_frame(frame, direction)
@@ -40,7 +43,7 @@ class PipelineSink(FrameProcessor):
                 await self._downstream_push_frame(frame, direction)
 
 
-class Pipeline(FrameProcessor):
+class Pipeline(BasePipeline):
 
     def __init__(self, processors: List[FrameProcessor]):
         super().__init__()
@@ -53,6 +56,19 @@ class Pipeline(FrameProcessor):
 
         self._link_processors()
 
+    #
+    # BasePipeline
+    #
+
+    def processors_with_metrics(self):
+        services = []
+        for p in self._processors:
+            if isinstance(p, BasePipeline):
+                services += p.processors_with_metrics()
+            elif p.can_generate_metrics():
+                services.append(p)
+        return services
+
     #
     # Frame processor
     #
@@ -61,13 +77,16 @@ class Pipeline(FrameProcessor):
         await self._cleanup_processors()
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if direction == FrameDirection.DOWNSTREAM:
             await self._source.process_frame(frame, FrameDirection.DOWNSTREAM)
         elif direction == FrameDirection.UPSTREAM:
             await self._sink.process_frame(frame, FrameDirection.UPSTREAM)
 
     async def _cleanup_processors(self):
-        await asyncio.gather(*[p.cleanup() for p in self._processors])
+        for p in self._processors:
+            await p.cleanup()
 
     def _link_processors(self):
         prev = self._processors[0]

src/pipecat/pipeline/runner.py

@@ -20,18 +20,15 @@ class PipelineRunner:
         self.name: str = name or f"{self.__class__.__name__}#{obj_count(self)}"
 
         self._tasks = {}
-        self._running = True
 
         if handle_sigint:
             self._setup_sigint()
 
     async def run(self, task: PipelineTask):
         logger.debug(f"Runner {self} started running {task}")
-        self._running = True
         self._tasks[task.name] = task
         await task.run()
         del self._tasks[task.name]
-        self._running = False
         logger.debug(f"Runner {self} finished running {task}")
 
     async def stop_when_done(self):
@@ -42,18 +39,19 @@ class PipelineRunner:
         logger.debug(f"Canceling runner {self}")
         await asyncio.gather(*[t.cancel() for t in self._tasks.values()])
 
-    def is_active(self):
-        return self._running
-
     def _setup_sigint(self):
         loop = asyncio.get_running_loop()
         loop.add_signal_handler(
             signal.SIGINT,
-            lambda *args: asyncio.create_task(self._sigint_handler())
+            lambda *args: asyncio.create_task(self._sig_handler())
+        )
+        loop.add_signal_handler(
+            signal.SIGTERM,
+            lambda *args: asyncio.create_task(self._sig_handler())
         )
 
-    async def _sigint_handler(self):
-        logger.warning(f"Ctrl-C detected. Canceling runner {self}")
+    async def _sig_handler(self):
+        logger.warning(f"Interruption detected. Canceling runner {self}")
         await self.cancel()
 
     def __str__(self):

src/pipecat/pipeline/task.py

@@ -10,7 +10,8 @@ from typing import AsyncIterable, Iterable
 
 from pydantic import BaseModel
 
-from pipecat.frames.frames import CancelFrame, EndFrame, ErrorFrame, Frame, StartFrame, StopTaskFrame
+from pipecat.frames.frames import CancelFrame, EndFrame, ErrorFrame, Frame, MetricsFrame, StartFrame, StopTaskFrame
+from pipecat.pipeline.base_pipeline import BasePipeline
 from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
 from pipecat.utils.utils import obj_count, obj_id
 
@@ -19,6 +20,8 @@ from loguru import logger
 
 class PipelineParams(BaseModel):
     allow_interruptions: bool = False
+    enable_metrics: bool = False
+    report_only_initial_ttfb: bool = False
 
 
 class Source(FrameProcessor):
@@ -28,6 +31,8 @@ class Source(FrameProcessor):
         self._up_queue = up_queue
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         match direction:
             case FrameDirection.UPSTREAM:
                 await self._up_queue.put(frame)
@@ -37,12 +42,13 @@ class Source(FrameProcessor):
 
 class PipelineTask:
 
-    def __init__(self, pipeline: FrameProcessor, params: PipelineParams = PipelineParams()):
+    def __init__(self, pipeline: BasePipeline, params: PipelineParams = PipelineParams()):
         self.id: int = obj_id()
         self.name: str = f"{self.__class__.__name__}#{obj_count(self)}"
 
         self._pipeline = pipeline
         self._params = params
+        self._finished = False
 
         self._down_queue = asyncio.Queue()
         self._up_queue = asyncio.Queue()
@@ -50,6 +56,9 @@ class PipelineTask:
         self._source = Source(self._up_queue)
         self._source.link(pipeline)
 
+    def has_finished(self):
+        return self._finished
+
     async def stop_when_done(self):
         logger.debug(f"Task {self} scheduled to stop when done")
         await self.queue_frame(EndFrame())
@@ -62,11 +71,14 @@ class PipelineTask:
         await self._source.process_frame(CancelFrame(), FrameDirection.DOWNSTREAM)
         self._process_down_task.cancel()
         self._process_up_task.cancel()
+        await self._process_down_task
+        await self._process_up_task
 
     async def run(self):
         self._process_up_task = asyncio.create_task(self._process_up_queue())
         self._process_down_task = asyncio.create_task(self._process_down_queue())
         await asyncio.gather(self._process_up_task, self._process_down_task)
+        self._finished = True
 
     async def queue_frame(self, frame: Frame):
         await self._down_queue.put(frame)
@@ -81,9 +93,20 @@ class PipelineTask:
         else:
             raise Exception("Frames must be an iterable or async iterable")
 
+    def _initial_metrics_frame(self) -> MetricsFrame:
+        processors = self._pipeline.processors_with_metrics()
+        ttfb = dict(zip([p.name for p in processors], [0] * len(processors)))
+        return MetricsFrame(ttfb=ttfb)
+
     async def _process_down_queue(self):
-        await self._source.process_frame(
-            StartFrame(allow_interruptions=self._params.allow_interruptions), FrameDirection.DOWNSTREAM)
+        start_frame = StartFrame(
+            allow_interruptions=self._params.allow_interruptions,
+            enable_metrics=self._params.enable_metrics,
+            report_only_initial_ttfb=self._params.report_only_initial_ttfb
+        )
+        await self._source.process_frame(start_frame, FrameDirection.DOWNSTREAM)
+        await self._source.process_frame(self._initial_metrics_frame(), FrameDirection.DOWNSTREAM)
+
         running = True
         should_cleanup = True
         while running:
@@ -101,6 +124,7 @@ class PipelineTask:
             await self._pipeline.cleanup()
         # We just enqueue None to terminate the task gracefully.
         self._process_up_task.cancel()
+        await self._process_up_task
 
     async def _process_up_queue(self):
         while True:

src/pipecat/processors/aggregators/gated.py

@@ -48,6 +48,8 @@ class GatedAggregator(FrameProcessor):
         self._accumulator: List[Frame] = []
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         # We must not block system frames.
         if isinstance(frame, SystemFrame):
             await self.push_frame(frame, direction)

src/pipecat/processors/aggregators/llm_response.py

@@ -71,6 +71,8 @@ class LLMResponseAggregator(FrameProcessor):
     #    S I T E -> X
     #    S I E T -> X
     #  S I E I T -> X
+    #      S E T -> X
+    #    S E I T -> X
     #
     # The following case would not be supported:
     #
@@ -79,6 +81,8 @@ class LLMResponseAggregator(FrameProcessor):
     # and T2 would be dropped.
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         send_aggregation = False
 
         if isinstance(frame, self._start_frame):
@@ -87,6 +91,7 @@ class LLMResponseAggregator(FrameProcessor):
             self._seen_start_frame = True
             self._seen_end_frame = False
             self._seen_interim_results = False
+            await self.push_frame(frame, direction)
         elif isinstance(frame, self._end_frame):
             self._seen_end_frame = True
             self._seen_start_frame = False
@@ -94,11 +99,12 @@ class LLMResponseAggregator(FrameProcessor):
             # We might have received the end frame but we might still be
             # aggregating (i.e. we have seen interim results but not the final
             # text).
-            self._aggregating = self._seen_interim_results
+            self._aggregating = self._seen_interim_results or len(self._aggregation) == 0
 
             # Send the aggregation if we are not aggregating anymore (i.e. no
             # more interim results received).
             send_aggregation = not self._aggregating
+            await self.push_frame(frame, direction)
         elif isinstance(frame, self._accumulator_frame):
             if self._aggregating:
                 self._aggregation += f" {frame.text}"
@@ -207,6 +213,8 @@ class LLMFullResponseAggregator(FrameProcessor):
         self._aggregation = ""
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, TextFrame):
             self._aggregation += frame.text
         elif isinstance(frame, LLMFullResponseEndFrame):

src/pipecat/processors/aggregators/sentence.py

@@ -33,6 +33,8 @@ class SentenceAggregator(FrameProcessor):
         self._aggregation = ""
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         # We ignore interim description at this point.
         if isinstance(frame, InterimTranscriptionFrame):
             return

src/pipecat/processors/aggregators/user_response.py

@@ -74,6 +74,8 @@ class ResponseAggregator(FrameProcessor):
     #    S I T E -> X
     #    S I E T -> X
     #  S I E I T -> X
+    #      S E T -> X
+    #    S E I T -> X
     #
     # The following case would not be supported:
     #
@@ -82,6 +84,8 @@ class ResponseAggregator(FrameProcessor):
     # and T2 would be dropped.
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         send_aggregation = False
 
         if isinstance(frame, self._start_frame):
@@ -89,6 +93,7 @@ class ResponseAggregator(FrameProcessor):
             self._seen_start_frame = True
             self._seen_end_frame = False
             self._seen_interim_results = False
+            await self.push_frame(frame, direction)
         elif isinstance(frame, self._end_frame):
             self._seen_end_frame = True
             self._seen_start_frame = False
@@ -96,11 +101,12 @@ class ResponseAggregator(FrameProcessor):
             # We might have received the end frame but we might still be
             # aggregating (i.e. we have seen interim results but not the final
             # text).
-            self._aggregating = self._seen_interim_results
+            self._aggregating = self._seen_interim_results or len(self._aggregation) == 0
 
             # Send the aggregation if we are not aggregating anymore (i.e. no
             # more interim results received).
             send_aggregation = not self._aggregating
+            await self.push_frame(frame, direction)
         elif isinstance(frame, self._accumulator_frame):
             if self._aggregating:
                 self._aggregation += f" {frame.text}"

src/pipecat/processors/aggregators/vision_image_frame.py

@@ -30,6 +30,8 @@ class VisionImageFrameAggregator(FrameProcessor):
         self._describe_text = None
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, TextFrame):
             self._describe_text = frame.text
         elif isinstance(frame, ImageRawFrame):

src/pipecat/processors/filters/frame_filter.py

@@ -30,5 +30,7 @@ class FrameFilter(FrameProcessor):
                 or isinstance(frame, SystemFrame))
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if self._should_passthrough_frame(frame):
             await self.push_frame(frame, direction)

src/pipecat/processors/filters/function_filter.py

@@ -0,0 +1,30 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+from typing import Awaitable, Callable
+
+from pipecat.frames.frames import Frame, SystemFrame
+from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
+
+
+class FunctionFilter(FrameProcessor):
+
+    def __init__(self, filter: Callable[[Frame], Awaitable[bool]]):
+        super().__init__()
+        self._filter = filter
+
+    #
+    # Frame processor
+    #
+
+    def _should_passthrough_frame(self, frame):
+        return isinstance(frame, SystemFrame)
+
+    async def process_frame(self, frame: Frame, direction: FrameDirection):
+        passthrough = self._should_passthrough_frame(frame)
+        allowed = await self._filter(frame)
+        if passthrough or allowed:
+            await self.push_frame(frame, direction)

src/pipecat/processors/filters/wake_check_filter.py

@@ -43,6 +43,8 @@ class WakeCheckFilter(FrameProcessor):
             self._wake_patterns.append(pattern)
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         try:
             if isinstance(frame, TranscriptionFrame):
                 p = self._participant_states.get(frame.user_id)

src/pipecat/processors/frame_processor.py

@@ -5,10 +5,11 @@
 #
 
 import asyncio
-from asyncio import AbstractEventLoop
+import time
+
 from enum import Enum
 
-from pipecat.frames.frames import ErrorFrame, Frame
+from pipecat.frames.frames import ErrorFrame, Frame, MetricsFrame, StartFrame, UserStoppedSpeakingFrame
 from pipecat.utils.utils import obj_count, obj_id
 
 from loguru import logger
@@ -21,12 +22,52 @@ class FrameDirection(Enum):
 
 class FrameProcessor:
 
-    def __init__(self):
+    def __init__(
+            self,
+            name: str | None = None,
+            loop: asyncio.AbstractEventLoop | None = None,
+            **kwargs):
         self.id: int = obj_id()
-        self.name = f"{self.__class__.__name__}#{obj_count(self)}"
+        self.name = name or f"{self.__class__.__name__}#{obj_count(self)}"
         self._prev: "FrameProcessor" | None = None
         self._next: "FrameProcessor" | None = None
-        self._loop: AbstractEventLoop = asyncio.get_running_loop()
+        self._loop: asyncio.AbstractEventLoop = loop or asyncio.get_running_loop()
+
+        # Properties
+        self._allow_interruptions = False
+        self._enable_metrics = False
+        self._report_only_initial_ttfb = False
+
+        # Metrics
+        self._start_ttfb_time = 0
+        self._should_report_ttfb = True
+
+    @property
+    def interruptions_allowed(self):
+        return self._allow_interruptions
+
+    @property
+    def metrics_enabled(self):
+        return self._enable_metrics
+
+    @property
+    def report_only_initial_ttfb(self):
+        return self._report_only_initial_ttfb
+
+    def can_generate_metrics(self) -> bool:
+        return False
+
+    async def start_ttfb_metrics(self):
+        if self.metrics_enabled and self._should_report_ttfb:
+            self._start_ttfb_time = time.time()
+            self._should_report_ttfb = not self._report_only_initial_ttfb
+
+    async def stop_ttfb_metrics(self):
+        if self.metrics_enabled and self._start_ttfb_time > 0:
+            ttfb = time.time() - self._start_ttfb_time
+            logger.debug(f"{self.name} TTFB: {ttfb}")
+            await self.push_frame(MetricsFrame(ttfb={self.name: ttfb}))
+            self._start_ttfb_time = 0
 
     async def cleanup(self):
         pass
@@ -36,11 +77,16 @@ class FrameProcessor:
         processor._prev = self
         logger.debug(f"Linking {self} -> {self._next}")
 
-    def get_event_loop(self) -> AbstractEventLoop:
+    def get_event_loop(self) -> asyncio.AbstractEventLoop:
         return self._loop
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
-        pass
+        if isinstance(frame, StartFrame):
+            self._allow_interruptions = frame.allow_interruptions
+            self._enable_metrics = frame.enable_metrics
+            self._report_only_initial_ttfb = frame.report_only_initial_ttfb
+        elif isinstance(frame, UserStoppedSpeakingFrame):
+            self._should_report_ttfb = True
 
     async def push_error(self, error: ErrorFrame):
         await self.push_frame(error, FrameDirection.UPSTREAM)

src/pipecat/processors/frameworks/langchain.py

@@ -0,0 +1,79 @@
+#
+# Copyright (c) 2024, Daily
+#
+# SPDX-License-Identifier: BSD 2-Clause License
+#
+
+from typing import Union
+
+from pipecat.frames.frames import (
+    Frame,
+    LLMFullResponseEndFrame,
+    LLMFullResponseStartFrame,
+    LLMMessagesFrame,
+    LLMResponseEndFrame,
+    LLMResponseStartFrame,
+    TextFrame)
+from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
+
+from loguru import logger
+
+try:
+    from langchain_core.messages import AIMessageChunk
+    from langchain_core.runnables import Runnable
+except ModuleNotFoundError as e:
+    logger.exception(
+        "In order to use Langchain, you need to `pip install pipecat-ai[langchain]`. "
+    )
+    raise Exception(f"Missing module: {e}")
+
+
+class LangchainProcessor(FrameProcessor):
+    def __init__(self, chain: Runnable, transcript_key: str = "input"):
+        super().__init__()
+        self._chain = chain
+        self._transcript_key = transcript_key
+        self._participant_id: str | None = None
+
+    def set_participant_id(self, participant_id: str):
+        self._participant_id = participant_id
+
+    async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
+        if isinstance(frame, LLMMessagesFrame):
+            # Messages are accumulated by the `LLMUserResponseAggregator` in a list of messages.
+            # The last one by the human is the one we want to send to the LLM.
+            logger.debug(f"Got transcription frame {frame}")
+            text: str = frame.messages[-1]["content"]
+
+            await self._ainvoke(text.strip())
+        else:
+            await self.push_frame(frame, direction)
+
+    @staticmethod
+    def __get_token_value(text: Union[str, AIMessageChunk]) -> str:
+        match text:
+            case str():
+                return text
+            case AIMessageChunk():
+                return text.content
+            case _:
+                return ""
+
+    async def _ainvoke(self, text: str):
+        logger.debug(f"Invoking chain with {text}")
+        await self.push_frame(LLMFullResponseStartFrame())
+        try:
+            async for token in self._chain.astream(
+                {self._transcript_key: text},
+                config={"configurable": {"session_id": self._participant_id}},
+            ):
+                await self.push_frame(LLMResponseStartFrame())
+                await self.push_frame(TextFrame(self.__get_token_value(token)))
+                await self.push_frame(LLMResponseEndFrame())
+        except GeneratorExit:
+            logger.warning(f"{self} generator was closed prematurely")
+        except Exception as e:
+            logger.error(f"{self} an unknown error occurred: {e}")
+        await self.push_frame(LLMFullResponseEndFrame())

src/pipecat/processors/text_transformer.py

@@ -27,6 +27,8 @@ class StatelessTextTransformer(FrameProcessor):
         self._transform_fn = transform_fn
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
+        await super().process_frame(frame, direction)
+
         if isinstance(frame, TextFrame):
             result = self._transform_fn(frame.text)
             if isinstance(result, Coroutine):