mirror of
https://github.com/blakeblackshear/frigate.git
synced 2024-11-21 19:07:46 +01:00
208 lines
8.2 KiB
Python
208 lines
8.2 KiB
Python
import json
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import logging
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import multiprocessing as mp
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import os
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from logging.handlers import QueueHandler
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from typing import Dict, List
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import sys
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import signal
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import yaml
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from playhouse.sqlite_ext import SqliteExtDatabase
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from frigate.config import FrigateConfig
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from frigate.const import RECORD_DIR, CLIPS_DIR, CACHE_DIR
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from frigate.edgetpu import EdgeTPUProcess
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from frigate.events import EventProcessor, EventCleanup
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from frigate.http import create_app
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from frigate.log import log_process, root_configurer
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from frigate.models import Event
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from frigate.mqtt import create_mqtt_client
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from frigate.object_processing import TrackedObjectProcessor
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from frigate.record import RecordingMaintainer
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from frigate.video import capture_camera, track_camera
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from frigate.watchdog import FrigateWatchdog
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from frigate.zeroconf import broadcast_zeroconf
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logger = logging.getLogger(__name__)
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class FrigateApp():
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def __init__(self):
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self.stop_event = mp.Event()
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self.config: FrigateConfig = None
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self.detection_queue = mp.Queue()
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self.detectors: Dict[str, EdgeTPUProcess] = {}
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self.detection_out_events: Dict[str, mp.Event] = {}
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self.detection_shms: List[mp.shared_memory.SharedMemory] = []
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self.log_queue = mp.Queue()
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self.camera_metrics = {}
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def ensure_dirs(self):
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for d in [RECORD_DIR, CLIPS_DIR, CACHE_DIR]:
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if not os.path.exists(d) and not os.path.islink(d):
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logger.info(f"Creating directory: {d}")
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os.makedirs(d)
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else:
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logger.debug(f"Skipping directory: {d}")
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def init_logger(self):
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self.log_process = mp.Process(target=log_process, args=(self.log_queue,), name='log_process')
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self.log_process.daemon = True
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self.log_process.start()
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root_configurer(self.log_queue)
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def init_config(self):
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config_file = os.environ.get('CONFIG_FILE', '/config/config.yml')
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self.config = FrigateConfig(config_file=config_file)
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for camera_name in self.config.cameras.keys():
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# create camera_metrics
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self.camera_metrics[camera_name] = {
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'camera_fps': mp.Value('d', 0.0),
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'skipped_fps': mp.Value('d', 0.0),
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'process_fps': mp.Value('d', 0.0),
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'detection_fps': mp.Value('d', 0.0),
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'detection_frame': mp.Value('d', 0.0),
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'read_start': mp.Value('d', 0.0),
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'ffmpeg_pid': mp.Value('i', 0),
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'frame_queue': mp.Queue(maxsize=2)
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}
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def set_log_levels(self):
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logging.getLogger().setLevel(self.config.logger.default)
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for log, level in self.config.logger.logs.items():
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logging.getLogger(log).setLevel(level)
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if not 'werkzeug' in self.config.logger.logs:
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logging.getLogger('werkzeug').setLevel('ERROR')
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def init_queues(self):
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# Queues for clip processing
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self.event_queue = mp.Queue()
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self.event_processed_queue = mp.Queue()
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# Queue for cameras to push tracked objects to
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self.detected_frames_queue = mp.Queue(maxsize=len(self.config.cameras.keys())*2)
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def init_database(self):
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self.db = SqliteExtDatabase(f"/{os.path.join(CLIPS_DIR, 'frigate.db')}")
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models = [Event]
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self.db.bind(models)
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self.db.create_tables(models, safe=True)
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def init_web_server(self):
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self.flask_app = create_app(self.config, self.db, self.camera_metrics, self.detectors, self.detected_frames_processor)
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def init_mqtt(self):
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self.mqtt_client = create_mqtt_client(self.config.mqtt)
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def start_detectors(self):
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for name in self.config.cameras.keys():
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self.detection_out_events[name] = mp.Event()
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shm_in = mp.shared_memory.SharedMemory(name=name, create=True, size=300*300*3)
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shm_out = mp.shared_memory.SharedMemory(name=f"out-{name}", create=True, size=20*6*4)
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self.detection_shms.append(shm_in)
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self.detection_shms.append(shm_out)
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for name, detector in self.config.detectors.items():
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if detector.type == 'cpu':
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self.detectors[name] = EdgeTPUProcess(name, self.detection_queue, out_events=self.detection_out_events, tf_device='cpu')
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if detector.type == 'edgetpu':
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self.detectors[name] = EdgeTPUProcess(name, self.detection_queue, out_events=self.detection_out_events, tf_device=detector.device)
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def start_detected_frames_processor(self):
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self.detected_frames_processor = TrackedObjectProcessor(self.config, self.mqtt_client, self.config.mqtt.topic_prefix,
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self.detected_frames_queue, self.event_queue, self.event_processed_queue, self.stop_event)
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self.detected_frames_processor.start()
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def start_camera_processors(self):
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for name, config in self.config.cameras.items():
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camera_process = mp.Process(target=track_camera, name=f"camera_processor:{name}", args=(name, config,
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self.detection_queue, self.detection_out_events[name], self.detected_frames_queue,
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self.camera_metrics[name]))
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camera_process.daemon = True
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self.camera_metrics[name]['process'] = camera_process
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camera_process.start()
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logger.info(f"Camera processor started for {name}: {camera_process.pid}")
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def start_camera_capture_processes(self):
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for name, config in self.config.cameras.items():
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capture_process = mp.Process(target=capture_camera, name=f"camera_capture:{name}", args=(name, config,
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self.camera_metrics[name]))
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capture_process.daemon = True
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self.camera_metrics[name]['capture_process'] = capture_process
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capture_process.start()
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logger.info(f"Capture process started for {name}: {capture_process.pid}")
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def start_event_processor(self):
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self.event_processor = EventProcessor(self.config, self.camera_metrics, self.event_queue, self.event_processed_queue, self.stop_event)
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self.event_processor.start()
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def start_event_cleanup(self):
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self.event_cleanup = EventCleanup(self.config, self.stop_event)
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self.event_cleanup.start()
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def start_recording_maintainer(self):
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self.recording_maintainer = RecordingMaintainer(self.config, self.stop_event)
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self.recording_maintainer.start()
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def start_watchdog(self):
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self.frigate_watchdog = FrigateWatchdog(self.detectors, self.stop_event)
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self.frigate_watchdog.start()
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def start(self):
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self.init_logger()
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try:
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self.ensure_dirs()
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try:
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self.init_config()
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except Exception as e:
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logger.error(f"Error parsing config: {e}")
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self.log_process.terminate()
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sys.exit(1)
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self.set_log_levels()
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self.init_queues()
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self.init_database()
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self.init_mqtt()
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except Exception as e:
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logger.error(e)
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self.log_process.terminate()
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sys.exit(1)
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self.start_detectors()
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self.start_detected_frames_processor()
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self.start_camera_processors()
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self.start_camera_capture_processes()
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self.init_web_server()
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self.start_event_processor()
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self.start_event_cleanup()
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self.start_recording_maintainer()
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self.start_watchdog()
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# self.zeroconf = broadcast_zeroconf(self.config.mqtt.client_id)
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def receiveSignal(signalNumber, frame):
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self.stop()
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sys.exit()
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signal.signal(signal.SIGTERM, receiveSignal)
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self.flask_app.run(host='127.0.0.1', port=5001, debug=False)
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self.stop()
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def stop(self):
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logger.info(f"Stopping...")
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self.stop_event.set()
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self.detected_frames_processor.join()
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self.event_processor.join()
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self.event_cleanup.join()
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self.recording_maintainer.join()
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self.frigate_watchdog.join()
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for detector in self.detectors.values():
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detector.stop()
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while len(self.detection_shms) > 0:
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shm = self.detection_shms.pop()
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shm.close()
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shm.unlink()
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