mirror of
https://github.com/blakeblackshear/frigate.git
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045aac8933
* Add object ratio config parameters Issue: #2948 * Add config test for object filter ratios Issue: #2948 * Address review comments - Accept `ratio` default - Rename `bounds` to `box` for consistency - Add migration for new field Issue: #2948 * Fix logical errors - field migrations require default values - `clipped` referenced the wrong index for region, since it shifted - missed an inclusion of `ratio` for detections in `process_frames` - revert naming `o[2]` as `box` since it is out of scope! This has now been test-run against a video, so I believe the kinks are worked out. Issue: #2948 * Update contributing notes for `make` Issue: #2948 * Fix migration - Ensure that defaults match between Event and migration script - Deconflict migration script number (from rebase) Issue: #2948 * Filter objects out of ratio bounds Issue: #2948 * Update migration file to 009 Issue: #2948
304 lines
12 KiB
Python
304 lines
12 KiB
Python
import datetime
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import logging
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import os
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import queue
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import threading
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import time
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from pathlib import Path
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from peewee import fn
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from frigate.config import EventsConfig, FrigateConfig, RecordConfig
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from frigate.const import CLIPS_DIR
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from frigate.models import Event
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logger = logging.getLogger(__name__)
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def should_insert_db(prev_event, current_event):
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"""If current event has new clip or snapshot."""
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return (
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(not prev_event["has_clip"] and not prev_event["has_snapshot"])
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and (current_event["has_clip"] or current_event["has_snapshot"])
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)
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def should_update_db(prev_event, current_event):
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"""If current_event has updated fields and (clip or snapshot)."""
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return (
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(current_event["has_clip"] or current_event["has_snapshot"])
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and (prev_event["top_score"] != current_event["top_score"]
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or prev_event["entered_zones"] != current_event["entered_zones"]
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or prev_event["thumbnail"] != current_event["thumbnail"]
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or prev_event["has_clip"] != current_event["has_clip"]
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or prev_event["has_snapshot"] != current_event["has_snapshot"])
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)
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class EventProcessor(threading.Thread):
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def __init__(
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self, config, camera_processes, event_queue, event_processed_queue, stop_event
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):
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threading.Thread.__init__(self)
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self.name = "event_processor"
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self.config = config
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self.camera_processes = camera_processes
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self.cached_clips = {}
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self.event_queue = event_queue
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self.event_processed_queue = event_processed_queue
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self.events_in_process = {}
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self.stop_event = stop_event
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def run(self):
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# set an end_time on events without an end_time on startup
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Event.update(end_time=Event.start_time + 30).where(
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Event.end_time == None
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).execute()
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while not self.stop_event.is_set():
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try:
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event_type, camera, event_data = self.event_queue.get(timeout=10)
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except queue.Empty:
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continue
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logger.debug(f"Event received: {event_type} {camera} {event_data['id']}")
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event_config: EventsConfig = self.config.cameras[camera].record.events
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if event_type == "start":
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self.events_in_process[event_data["id"]] = event_data
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elif event_type == "update" and should_insert_db(
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self.events_in_process[event_data["id"]], event_data
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):
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self.events_in_process[event_data["id"]] = event_data
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# TODO: this will generate a lot of db activity possibly
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Event.insert(
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id=event_data["id"],
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label=event_data["label"],
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camera=camera,
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start_time=event_data["start_time"] - event_config.pre_capture,
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end_time=None,
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top_score=event_data["top_score"],
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false_positive=event_data["false_positive"],
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zones=list(event_data["entered_zones"]),
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thumbnail=event_data["thumbnail"],
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region=event_data["region"],
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box=event_data["box"],
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area=event_data["area"],
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has_clip=event_data["has_clip"],
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has_snapshot=event_data["has_snapshot"],
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).execute()
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elif event_type == "update" and should_update_db(
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self.events_in_process[event_data["id"]], event_data
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):
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self.events_in_process[event_data["id"]] = event_data
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# TODO: this will generate a lot of db activity possibly
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Event.update(
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label=event_data["label"],
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camera=camera,
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start_time=event_data["start_time"] - event_config.pre_capture,
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end_time=None,
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top_score=event_data["top_score"],
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false_positive=event_data["false_positive"],
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zones=list(event_data["entered_zones"]),
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thumbnail=event_data["thumbnail"],
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region=event_data["region"],
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box=event_data["box"],
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area=event_data["area"],
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ratio=event_data["ratio"],
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has_clip=event_data["has_clip"],
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has_snapshot=event_data["has_snapshot"],
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).where(Event.id == event_data["id"]).execute()
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elif event_type == "end":
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if event_data["has_clip"] or event_data["has_snapshot"]:
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# Full update for valid end of event
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Event.update(
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label=event_data["label"],
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camera=camera,
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start_time=event_data["start_time"] - event_config.pre_capture,
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end_time=event_data["end_time"] + event_config.post_capture,
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top_score=event_data["top_score"],
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false_positive=event_data["false_positive"],
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zones=list(event_data["entered_zones"]),
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thumbnail=event_data["thumbnail"],
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region=event_data["region"],
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box=event_data["box"],
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area=event_data["area"],
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ratio=event_data["ratio"],
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has_clip=event_data["has_clip"],
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has_snapshot=event_data["has_snapshot"],
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).where(Event.id == event_data["id"]).execute()
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else:
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# Event ended after clip & snapshot disabled,
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# only end time should be updated.
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Event.update(
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end_time=event_data["end_time"] + event_config.post_capture
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).where(Event.id == event_data["id"]).execute()
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del self.events_in_process[event_data["id"]]
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self.event_processed_queue.put((event_data["id"], camera))
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# set an end_time on events without an end_time before exiting
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Event.update(end_time=datetime.datetime.now().timestamp()).where(
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Event.end_time == None
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).execute()
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logger.info(f"Exiting event processor...")
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class EventCleanup(threading.Thread):
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def __init__(self, config: FrigateConfig, stop_event):
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threading.Thread.__init__(self)
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self.name = "event_cleanup"
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self.config = config
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self.stop_event = stop_event
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self.camera_keys = list(self.config.cameras.keys())
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def expire(self, media_type):
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## Expire events from unlisted cameras based on the global config
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if media_type == "clips":
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retain_config = self.config.record.events.retain
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file_extension = "mp4"
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update_params = {"has_clip": False}
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else:
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retain_config = self.config.snapshots.retain
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file_extension = "jpg"
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update_params = {"has_snapshot": False}
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distinct_labels = (
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Event.select(Event.label)
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.where(Event.camera.not_in(self.camera_keys))
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.distinct()
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)
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# loop over object types in db
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for l in distinct_labels:
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# get expiration time for this label
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expire_days = retain_config.objects.get(l.label, retain_config.default)
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expire_after = (
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datetime.datetime.now() - datetime.timedelta(days=expire_days)
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).timestamp()
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# grab all events after specific time
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expired_events = Event.select().where(
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Event.camera.not_in(self.camera_keys),
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Event.start_time < expire_after,
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Event.label == l.label,
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Event.retain_indefinitely == False,
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)
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# delete the media from disk
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for event in expired_events:
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media_name = f"{event.camera}-{event.id}"
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media_path = Path(
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f"{os.path.join(CLIPS_DIR, media_name)}.{file_extension}"
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)
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media_path.unlink(missing_ok=True)
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if file_extension == "jpg":
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media_path = Path(
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f"{os.path.join(CLIPS_DIR, media_name)}-clean.png"
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)
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media_path.unlink(missing_ok=True)
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# update the clips attribute for the db entry
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update_query = Event.update(update_params).where(
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Event.camera.not_in(self.camera_keys),
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Event.start_time < expire_after,
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Event.label == l.label,
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Event.retain_indefinitely == False,
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)
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update_query.execute()
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## Expire events from cameras based on the camera config
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for name, camera in self.config.cameras.items():
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if media_type == "clips":
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retain_config = camera.record.events.retain
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else:
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retain_config = camera.snapshots.retain
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# get distinct objects in database for this camera
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distinct_labels = (
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Event.select(Event.label).where(Event.camera == name).distinct()
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)
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# loop over object types in db
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for l in distinct_labels:
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# get expiration time for this label
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expire_days = retain_config.objects.get(l.label, retain_config.default)
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expire_after = (
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datetime.datetime.now() - datetime.timedelta(days=expire_days)
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).timestamp()
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# grab all events after specific time
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expired_events = Event.select().where(
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Event.camera == name,
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Event.start_time < expire_after,
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Event.label == l.label,
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Event.retain_indefinitely == False,
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)
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# delete the grabbed clips from disk
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for event in expired_events:
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media_name = f"{event.camera}-{event.id}"
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media_path = Path(
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f"{os.path.join(CLIPS_DIR, media_name)}.{file_extension}"
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)
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media_path.unlink(missing_ok=True)
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if file_extension == "jpg":
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media_path = Path(
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f"{os.path.join(CLIPS_DIR, media_name)}-clean.png"
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)
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media_path.unlink(missing_ok=True)
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# update the clips attribute for the db entry
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update_query = Event.update(update_params).where(
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Event.camera == name,
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Event.start_time < expire_after,
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Event.label == l.label,
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Event.retain_indefinitely == False,
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)
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update_query.execute()
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def purge_duplicates(self):
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duplicate_query = """with grouped_events as (
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select id,
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label,
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camera,
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has_snapshot,
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has_clip,
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row_number() over (
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partition by label, camera, round(start_time/5,0)*5
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order by end_time-start_time desc
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) as copy_number
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from event
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)
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select distinct id, camera, has_snapshot, has_clip from grouped_events
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where copy_number > 1;"""
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duplicate_events = Event.raw(duplicate_query)
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for event in duplicate_events:
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logger.debug(f"Removing duplicate: {event.id}")
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media_name = f"{event.camera}-{event.id}"
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media_path = Path(f"{os.path.join(CLIPS_DIR, media_name)}.jpg")
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media_path.unlink(missing_ok=True)
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media_path = Path(f"{os.path.join(CLIPS_DIR, media_name)}-clean.png")
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media_path.unlink(missing_ok=True)
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media_path = Path(f"{os.path.join(CLIPS_DIR, media_name)}.mp4")
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media_path.unlink(missing_ok=True)
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(
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Event.delete()
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.where(Event.id << [event.id for event in duplicate_events])
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.execute()
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)
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def run(self):
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# only expire events every 5 minutes
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while not self.stop_event.wait(300):
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self.expire("clips")
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self.expire("snapshots")
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self.purge_duplicates()
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# drop events from db where has_clip and has_snapshot are false
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delete_query = Event.delete().where(
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Event.has_clip == False, Event.has_snapshot == False
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)
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delete_query.execute()
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logger.info(f"Exiting event cleanup...")
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