268 lines
9.1 KiB
Python
268 lines
9.1 KiB
Python
import inspect
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import logging
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import time
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import types
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from functools import partial
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from queue import Queue, Empty
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from dailyai.output_queue import OutputQueueFrame, FrameType
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from threading import Thread, Event, Timer
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from daily import (
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EventHandler,
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CallClient,
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Daily,
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VirtualCameraDevice,
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VirtualMicrophoneDevice,
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VirtualSpeakerDevice,
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)
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class DailyTransportService(EventHandler):
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def __init__(
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self,
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room_url: str,
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token: str,
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bot_name: str,
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duration: float = 10,
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):
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super().__init__()
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self.bot_name: str = bot_name
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self.room_url: str = room_url
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self.token: str = token
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self.duration: float = duration
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self.expiration = time.time() + duration * 60
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self.output_queue = Queue()
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self.is_interrupted = Event()
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self.stop_threads = Event()
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self.story_started = False
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self.logger: logging.Logger = logging.getLogger("dailyai")
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self.event_handlers = {}
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def monkeypatch(self, event_name, *args):
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for handler in self.event_handlers[event_name]:
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handler(*args)
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def add_event_handler(self, event_name: str, handler):
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if not event_name.startswith("on_"):
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raise Exception(f"Event handler {event_name} must start with 'on_'")
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methods = inspect.getmembers(self, predicate=inspect.ismethod)
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if event_name not in [method[0] for method in methods]:
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raise Exception(f"Event handler {event_name} not found")
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if not event_name in self.event_handlers:
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self.event_handlers[event_name] = [getattr(self, event_name), types.MethodType(handler, self)]
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setattr(self, event_name, partial(self.monkeypatch, event_name))
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else:
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self.event_handlers[event_name].append(types.MethodType(handler, self))
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def configure_daily(self):
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Daily.init()
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self.client = CallClient(event_handler=self)
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if self.mic_enabled:
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self.mic: VirtualMicrophoneDevice = Daily.create_microphone_device(
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"mic", sample_rate=self.mic_sample_rate, channels=1
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)
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if self.camera_enabled:
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self.camera: VirtualCameraDevice = Daily.create_camera_device(
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"camera", width=self.camera_width, height=self.camera_height, color_format="RGB"
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)
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self.speaker: VirtualSpeakerDevice = Daily.create_speaker_device(
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"speaker", sample_rate=16000, channels=1
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)
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Daily.select_speaker_device("speaker")
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self.client.set_user_name(self.bot_name)
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self.client.join(self.room_url, self.token, completion=self.call_joined)
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self.client.update_inputs(
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{
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"camera": {
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"isEnabled": True,
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"settings": {
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"deviceId": "camera",
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},
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},
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"microphone": {
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"isEnabled": True,
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"settings": {
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"deviceId": "mic",
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"customConstraints": {
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"autoGainControl": {"exact": False},
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"echoCancellation": {"exact": False},
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"noiseSuppression": {"exact": False},
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},
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},
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},
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}
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)
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self.client.update_publishing(
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{
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"camera": {
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"sendSettings": {
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"maxQuality": "low",
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"encodings": {
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"low": {
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"maxBitrate": 250000,
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"scaleResolutionDownBy": 1.333,
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"maxFramerate": 8,
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}
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},
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}
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}
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}
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)
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self.my_participant_id = self.client.participants()["local"]["id"]
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def run(self) -> None:
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self.configure_daily()
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self.running_thread = Thread(target=self.run_daily, daemon=True)
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self.running_thread.start()
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def run_daily(self):
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# TODO: this loop could, I think, be replaced with a timer and an event
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self.participant_left = False
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try:
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participant_count: int = len(self.client.participants())
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self.logger.info(f"{participant_count} participants in room")
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while time.time() < self.expiration and not self.participant_left:
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# all handling of incoming transcriptions happens in on_transcription_message
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time.sleep(1)
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except Exception as e:
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self.logger.error(f"Exception {e}")
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finally:
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self.client.leave()
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def stop(self):
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self.stop_threads.set()
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self.camera_thread.join()
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self.output_queue.put(OutputQueueFrame(FrameType.END_STREAM, None))
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self.frame_consumer_thread.join()
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self.client.leave()
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def call_joined(self, join_data, client_error):
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self.logger.info(f"Call_joined: {join_data}, {client_error}")
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self.image: bytes | None = None
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self.camera_thread = Thread(target=self.run_camera, daemon=True)
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self.camera_thread.start()
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self.logger.info("Starting frame consumer thread")
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self.frame_consumer_thread = Thread(target=self.frame_consumer, daemon=True)
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self.frame_consumer_thread.start()
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if self.token:
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self.client.start_transcription(
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{
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"language": "en",
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"tier": "nova",
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"model": "2-conversationalai",
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"profanity_filter": True,
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"redact": False,
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"extra": {
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"endpointing": True,
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"punctuate": False,
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},
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}
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)
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def on_participant_joined(self, participant):
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pass
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def on_participant_left(self, participant, reason):
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pass
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def on_app_message(self, message, sender):
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pass
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def on_transcription_message(self, message):
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with self.tracer.start_as_current_span(
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"on_transcription_message", context=self.ctx
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):
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if message["session_id"] != self.my_participant_id:
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self.handle_transcription_fragment(message["text"])
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def on_transcription_stopped(self, stopped_by, stopped_by_error):
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self.logger.info(f"Transcription stopped {stopped_by}, {stopped_by_error}")
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def on_transcription_error(self, message):
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self.logger.error(f"Transcription error {message}")
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def on_transcription_started(self, status):
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self.logger.info(f"Transcription started {status}")
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def set_image(self, image: bytes):
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self.image: bytes | None = image
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def run_camera(self):
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try:
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while not self.stop_threads.is_set():
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if self.image:
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self.camera.write_frame(self.image)
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time.sleep(1.0 / 8.0) # 8 fps
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except Exception as e:
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self.logger.error(f"Exception {e} in camera thread.")
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def frame_consumer(self):
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self.logger.info("🎬 Starting frame consumer thread")
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b = bytearray()
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smallest_write_size = 3200
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all_audio_frames = bytearray()
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while True:
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try:
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frame: OutputQueueFrame = self.output_queue.get()
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if frame.frame_type == FrameType.END_STREAM:
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self.logger.info("Stopping frame consumer thread")
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return
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# if interrupted, we just pull frames off the queue and discard them
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if not self.is_interrupted.is_set():
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if frame:
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if frame.frame_type == FrameType.AUDIO_FRAME:
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chunk = frame.frame_data
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all_audio_frames.extend(chunk)
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b.extend(chunk)
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l = len(b) - (len(b) % smallest_write_size)
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if l:
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self.mic.write_frames(bytes(b[:l]))
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b = b[l:]
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elif frame.frame_type == FrameType.IMAGE_FRAME:
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self.set_image(frame.frame_data)
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elif len(b):
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self.mic.write_frames(bytes(b))
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b = bytearray()
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else:
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if self.interrupt_time:
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self.logger.info(
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f"Lag to stop stream after interruption {time.perf_counter() - self.interrupt_time}"
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)
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self.interrupt_time = None
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if frame.frame_type == FrameType.START_STREAM:
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self.is_interrupted.clear()
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self.output_queue.task_done()
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except Empty:
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try:
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if len(b):
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self.mic.write_frames(bytes(b))
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except Exception as e:
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self.logger.error(f"Exception in frame_consumer: {e}, {len(b)}")
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b = bytearray()
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