import json import logging import multiprocessing as mp import os from logging.handlers import QueueHandler from typing import Dict, List import sys import signal import yaml from gevent import pywsgi from geventwebsocket.handler import WebSocketHandler from peewee_migrate import Router from playhouse.sqlite_ext import SqliteExtDatabase from playhouse.sqliteq import SqliteQueueDatabase from frigate.config import FrigateConfig from frigate.const import RECORD_DIR, CLIPS_DIR, CACHE_DIR from frigate.edgetpu import EdgeTPUProcess from frigate.events import EventProcessor, EventCleanup from frigate.http import create_app from frigate.log import log_process, root_configurer from frigate.models import Event, Recordings from frigate.mqtt import create_mqtt_client from frigate.object_processing import TrackedObjectProcessor from frigate.record import RecordingMaintainer from frigate.stats import StatsEmitter, stats_init from frigate.video import capture_camera, track_camera from frigate.watchdog import FrigateWatchdog from frigate.zeroconf import broadcast_zeroconf logger = logging.getLogger(__name__) class FrigateApp: def __init__(self): self.stop_event = mp.Event() self.config: FrigateConfig = None self.detection_queue = mp.Queue() self.detectors: Dict[str, EdgeTPUProcess] = {} self.detection_out_events: Dict[str, mp.Event] = {} self.detection_shms: List[mp.shared_memory.SharedMemory] = [] self.log_queue = mp.Queue() self.camera_metrics = {} def set_environment_vars(self): for key, value in self.config.environment_vars.items(): os.environ[key] = value def ensure_dirs(self): for d in [RECORD_DIR, CLIPS_DIR, CACHE_DIR]: if not os.path.exists(d) and not os.path.islink(d): logger.info(f"Creating directory: {d}") os.makedirs(d) else: logger.debug(f"Skipping directory: {d}") def init_logger(self): self.log_process = mp.Process( target=log_process, args=(self.log_queue,), name="log_process" ) self.log_process.daemon = True self.log_process.start() root_configurer(self.log_queue) def init_config(self): config_file = os.environ.get("CONFIG_FILE", "/config/config.yml") self.config = FrigateConfig(config_file=config_file) for camera_name in self.config.cameras.keys(): # create camera_metrics self.camera_metrics[camera_name] = { "camera_fps": mp.Value("d", 0.0), "skipped_fps": mp.Value("d", 0.0), "process_fps": mp.Value("d", 0.0), "detection_enabled": mp.Value( "i", self.config.cameras[camera_name].detect.enabled ), "detection_fps": mp.Value("d", 0.0), "detection_frame": mp.Value("d", 0.0), "read_start": mp.Value("d", 0.0), "ffmpeg_pid": mp.Value("i", 0), "frame_queue": mp.Queue(maxsize=2), } def check_config(self): for name, camera in self.config.cameras.items(): assigned_roles = list( set([r for i in camera.ffmpeg.inputs for r in i.roles]) ) if not camera.clips.enabled and "clips" in assigned_roles: logger.warning( f"Camera {name} has clips assigned to an input, but clips is not enabled." ) elif camera.clips.enabled and not "clips" in assigned_roles: logger.warning( f"Camera {name} has clips enabled, but clips is not assigned to an input." ) if not camera.record.enabled and "record" in assigned_roles: logger.warning( f"Camera {name} has record assigned to an input, but record is not enabled." ) elif camera.record.enabled and not "record" in assigned_roles: logger.warning( f"Camera {name} has record enabled, but record is not assigned to an input." ) if not camera.rtmp.enabled and "rtmp" in assigned_roles: logger.warning( f"Camera {name} has rtmp assigned to an input, but rtmp is not enabled." ) elif camera.rtmp.enabled and not "rtmp" in assigned_roles: logger.warning( f"Camera {name} has rtmp enabled, but rtmp is not assigned to an input." ) def set_log_levels(self): logging.getLogger().setLevel(self.config.logger.default) for log, level in self.config.logger.logs.items(): logging.getLogger(log).setLevel(level) if not "geventwebsocket.handler" in self.config.logger.logs: logging.getLogger("geventwebsocket.handler").setLevel("ERROR") def init_queues(self): # Queues for clip processing self.event_queue = mp.Queue() self.event_processed_queue = mp.Queue() # Queue for cameras to push tracked objects to self.detected_frames_queue = mp.Queue( maxsize=len(self.config.cameras.keys()) * 2 ) def init_database(self): # Migrate DB location old_db_path = os.path.join(CLIPS_DIR, "frigate.db") if not os.path.isfile(self.config.database.path) and os.path.isfile( old_db_path ): os.rename(old_db_path, self.config.database.path) # Migrate DB schema migrate_db = SqliteExtDatabase(self.config.database.path) # Run migrations del logging.getLogger("peewee_migrate").handlers[:] router = Router(migrate_db) router.run() migrate_db.close() self.db = SqliteQueueDatabase(self.config.database.path) models = [Event, Recordings] self.db.bind(models) def init_stats(self): self.stats_tracking = stats_init(self.camera_metrics, self.detectors) def init_web_server(self): self.flask_app = create_app( self.config, self.db, self.stats_tracking, self.detected_frames_processor, self.mqtt_client, ) def init_mqtt(self): self.mqtt_client = create_mqtt_client(self.config, self.camera_metrics) def start_detectors(self): model_shape = (self.config.model.height, self.config.model.width) for name in self.config.cameras.keys(): self.detection_out_events[name] = mp.Event() shm_in = mp.shared_memory.SharedMemory( name=name, create=True, size=self.config.model.height * self.config.model.width * 3, ) shm_out = mp.shared_memory.SharedMemory( name=f"out-{name}", create=True, size=20 * 6 * 4 ) self.detection_shms.append(shm_in) self.detection_shms.append(shm_out) for name, detector in self.config.detectors.items(): if detector.type == "cpu": self.detectors[name] = EdgeTPUProcess( name, self.detection_queue, self.detection_out_events, model_shape, "cpu", detector.num_threads, ) if detector.type == "edgetpu": self.detectors[name] = EdgeTPUProcess( name, self.detection_queue, self.detection_out_events, model_shape, detector.device, detector.num_threads, ) def start_detected_frames_processor(self): self.detected_frames_processor = TrackedObjectProcessor( self.config, self.mqtt_client, self.config.mqtt.topic_prefix, self.detected_frames_queue, self.event_queue, self.event_processed_queue, self.stop_event, ) self.detected_frames_processor.start() def start_camera_processors(self): model_shape = (self.config.model.height, self.config.model.width) for name, config in self.config.cameras.items(): camera_process = mp.Process( target=track_camera, name=f"camera_processor:{name}", args=( name, config, model_shape, self.detection_queue, self.detection_out_events[name], self.detected_frames_queue, self.camera_metrics[name], ), ) camera_process.daemon = True self.camera_metrics[name]["process"] = camera_process camera_process.start() logger.info(f"Camera processor started for {name}: {camera_process.pid}") def start_camera_capture_processes(self): for name, config in self.config.cameras.items(): capture_process = mp.Process( target=capture_camera, name=f"camera_capture:{name}", args=(name, config, self.camera_metrics[name]), ) capture_process.daemon = True self.camera_metrics[name]["capture_process"] = capture_process capture_process.start() logger.info(f"Capture process started for {name}: {capture_process.pid}") def start_event_processor(self): self.event_processor = EventProcessor( self.config, self.camera_metrics, self.event_queue, self.event_processed_queue, self.stop_event, ) self.event_processor.start() def start_event_cleanup(self): self.event_cleanup = EventCleanup(self.config, self.stop_event) self.event_cleanup.start() def start_recording_maintainer(self): self.recording_maintainer = RecordingMaintainer(self.config, self.stop_event) self.recording_maintainer.start() def start_stats_emitter(self): self.stats_emitter = StatsEmitter( self.config, self.stats_tracking, self.mqtt_client, self.config.mqtt.topic_prefix, self.stop_event, ) self.stats_emitter.start() def start_watchdog(self): self.frigate_watchdog = FrigateWatchdog(self.detectors, self.stop_event) self.frigate_watchdog.start() def start(self): self.init_logger() try: try: self.init_config() except Exception as e: print(f"Error parsing config: {e}") self.log_process.terminate() sys.exit(1) self.set_environment_vars() self.ensure_dirs() self.check_config() self.set_log_levels() self.init_queues() self.init_database() self.init_mqtt() except Exception as e: print(e) self.log_process.terminate() sys.exit(1) self.start_detectors() self.start_detected_frames_processor() self.start_camera_processors() self.start_camera_capture_processes() self.init_stats() self.init_web_server() self.start_event_processor() self.start_event_cleanup() self.start_recording_maintainer() self.start_stats_emitter() self.start_watchdog() # self.zeroconf = broadcast_zeroconf(self.config.mqtt.client_id) def receiveSignal(signalNumber, frame): self.stop() sys.exit() signal.signal(signal.SIGTERM, receiveSignal) server = pywsgi.WSGIServer( ("127.0.0.1", 5001), self.flask_app, handler_class=WebSocketHandler ) try: server.serve_forever() except KeyboardInterrupt: pass self.stop() def stop(self): logger.info(f"Stopping...") self.stop_event.set() self.detected_frames_processor.join() self.event_processor.join() self.event_cleanup.join() self.recording_maintainer.join() self.stats_emitter.join() self.frigate_watchdog.join() self.db.stop() for detector in self.detectors.values(): detector.stop() while len(self.detection_shms) > 0: shm = self.detection_shms.pop() shm.close() shm.unlink()