mirror of
https://github.com/blakeblackshear/frigate.git
synced 2024-11-21 19:07:46 +01:00
ab50d0b006
* Add isort and ruff linter Both linters are pretty common among modern python code bases. The isort tool provides stable sorting and grouping, as well as pruning of unused imports. Ruff is a modern linter, that is very fast due to being written in rust. It can detect many common issues in a python codebase. Removes the pylint dev requirement, since ruff replaces it. * treewide: fix issues detected by ruff * treewide: fix bare except clauses * .devcontainer: Set up isort * treewide: optimize imports * treewide: apply black * treewide: make regex patterns raw strings This is necessary for escape sequences to be properly recognized.
1028 lines
38 KiB
Python
1028 lines
38 KiB
Python
import base64
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import datetime
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import json
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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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from collections import Counter, defaultdict
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from statistics import median
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from typing import Callable
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import cv2
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import numpy as np
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from frigate.comms.dispatcher import Dispatcher
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from frigate.config import (
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CameraConfig,
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FrigateConfig,
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MqttConfig,
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RecordConfig,
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SnapshotsConfig,
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)
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from frigate.const import CLIPS_DIR
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from frigate.events.maintainer import EventTypeEnum
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from frigate.util import (
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SharedMemoryFrameManager,
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calculate_region,
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draw_box_with_label,
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draw_timestamp,
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)
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logger = logging.getLogger(__name__)
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def on_edge(box, frame_shape):
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if (
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box[0] == 0
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or box[1] == 0
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or box[2] == frame_shape[1] - 1
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or box[3] == frame_shape[0] - 1
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):
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return True
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def is_better_thumbnail(current_thumb, new_obj, frame_shape) -> bool:
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# larger is better
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# cutoff images are less ideal, but they should also be smaller?
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# better scores are obviously better too
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# if the new_thumb is on an edge, and the current thumb is not
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if on_edge(new_obj["box"], frame_shape) and not on_edge(
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current_thumb["box"], frame_shape
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):
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return False
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# if the score is better by more than 5%
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if new_obj["score"] > current_thumb["score"] + 0.05:
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return True
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# if the area is 10% larger
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if new_obj["area"] > current_thumb["area"] * 1.1:
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return True
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return False
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class TrackedObject:
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def __init__(
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self, camera, colormap, camera_config: CameraConfig, frame_cache, obj_data
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):
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self.obj_data = obj_data
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self.camera = camera
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self.colormap = colormap
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self.camera_config = camera_config
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self.frame_cache = frame_cache
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self.current_zones = []
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self.entered_zones = []
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self.false_positive = True
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self.has_clip = False
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self.has_snapshot = False
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self.top_score = self.computed_score = 0.0
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self.thumbnail_data = None
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self.last_updated = 0
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self.last_published = 0
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self.frame = None
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self.previous = self.to_dict()
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# start the score history
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self.score_history = [self.obj_data["score"]]
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def _is_false_positive(self):
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# once a true positive, always a true positive
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if not self.false_positive:
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return False
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threshold = self.camera_config.objects.filters[self.obj_data["label"]].threshold
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return self.computed_score < threshold
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def compute_score(self):
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scores = self.score_history[:]
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# pad with zeros if you dont have at least 3 scores
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if len(scores) < 3:
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scores += [0.0] * (3 - len(scores))
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return median(scores)
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def update(self, current_frame_time, obj_data):
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thumb_update = False
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significant_change = False
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# if the object is not in the current frame, add a 0.0 to the score history
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if obj_data["frame_time"] != current_frame_time:
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self.score_history.append(0.0)
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else:
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self.score_history.append(obj_data["score"])
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# only keep the last 10 scores
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if len(self.score_history) > 10:
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self.score_history = self.score_history[-10:]
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# calculate if this is a false positive
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self.computed_score = self.compute_score()
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if self.computed_score > self.top_score:
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self.top_score = self.computed_score
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self.false_positive = self._is_false_positive()
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if not self.false_positive:
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# determine if this frame is a better thumbnail
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if self.thumbnail_data is None or is_better_thumbnail(
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self.thumbnail_data, obj_data, self.camera_config.frame_shape
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):
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self.thumbnail_data = {
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"frame_time": obj_data["frame_time"],
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"box": obj_data["box"],
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"area": obj_data["area"],
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"region": obj_data["region"],
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"score": obj_data["score"],
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}
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thumb_update = True
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# check zones
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current_zones = []
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bottom_center = (obj_data["centroid"][0], obj_data["box"][3])
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# check each zone
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for name, zone in self.camera_config.zones.items():
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# if the zone is not for this object type, skip
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if len(zone.objects) > 0 and obj_data["label"] not in zone.objects:
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continue
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contour = zone.contour
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# check if the object is in the zone
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if cv2.pointPolygonTest(contour, bottom_center, False) >= 0:
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# if the object passed the filters once, dont apply again
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if name in self.current_zones or not zone_filtered(self, zone.filters):
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current_zones.append(name)
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if name not in self.entered_zones:
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self.entered_zones.append(name)
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if not self.false_positive:
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# if the zones changed, signal an update
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if set(self.current_zones) != set(current_zones):
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significant_change = True
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# if the position changed, signal an update
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if self.obj_data["position_changes"] != obj_data["position_changes"]:
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significant_change = True
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# if the motionless_count reaches the stationary threshold
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if (
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self.obj_data["motionless_count"]
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== self.camera_config.detect.stationary.threshold
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):
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significant_change = True
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# update at least once per minute
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if self.obj_data["frame_time"] - self.previous["frame_time"] > 60:
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significant_change = True
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self.obj_data.update(obj_data)
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self.current_zones = current_zones
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return (thumb_update, significant_change)
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def to_dict(self, include_thumbnail: bool = False):
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(self.thumbnail_data["frame_time"] if self.thumbnail_data is not None else 0.0)
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event = {
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"id": self.obj_data["id"],
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"camera": self.camera,
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"frame_time": self.obj_data["frame_time"],
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"snapshot": self.thumbnail_data,
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"label": self.obj_data["label"],
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"sub_label": self.obj_data.get("sub_label"),
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"top_score": self.top_score,
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"false_positive": self.false_positive,
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"start_time": self.obj_data["start_time"],
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"end_time": self.obj_data.get("end_time", None),
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"score": self.obj_data["score"],
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"box": self.obj_data["box"],
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"area": self.obj_data["area"],
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"ratio": self.obj_data["ratio"],
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"region": self.obj_data["region"],
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"stationary": self.obj_data["motionless_count"]
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> self.camera_config.detect.stationary.threshold,
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"motionless_count": self.obj_data["motionless_count"],
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"position_changes": self.obj_data["position_changes"],
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"current_zones": self.current_zones.copy(),
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"entered_zones": self.entered_zones.copy(),
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"has_clip": self.has_clip,
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"has_snapshot": self.has_snapshot,
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}
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if include_thumbnail:
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event["thumbnail"] = base64.b64encode(self.get_thumbnail()).decode("utf-8")
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return event
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def get_thumbnail(self):
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if (
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self.thumbnail_data is None
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or self.thumbnail_data["frame_time"] not in self.frame_cache
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):
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ret, jpg = cv2.imencode(".jpg", np.zeros((175, 175, 3), np.uint8))
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jpg_bytes = self.get_jpg_bytes(
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timestamp=False, bounding_box=False, crop=True, height=175
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)
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if jpg_bytes:
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return jpg_bytes
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else:
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ret, jpg = cv2.imencode(".jpg", np.zeros((175, 175, 3), np.uint8))
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return jpg.tobytes()
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def get_clean_png(self):
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if self.thumbnail_data is None:
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return None
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try:
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best_frame = cv2.cvtColor(
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self.frame_cache[self.thumbnail_data["frame_time"]],
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cv2.COLOR_YUV2BGR_I420,
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)
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except KeyError:
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logger.warning(
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f"Unable to create clean png because frame {self.thumbnail_data['frame_time']} is not in the cache"
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)
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return None
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ret, png = cv2.imencode(".png", best_frame)
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if ret:
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return png.tobytes()
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else:
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return None
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def get_jpg_bytes(
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self, timestamp=False, bounding_box=False, crop=False, height=None, quality=70
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):
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if self.thumbnail_data is None:
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return None
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try:
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best_frame = cv2.cvtColor(
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self.frame_cache[self.thumbnail_data["frame_time"]],
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cv2.COLOR_YUV2BGR_I420,
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)
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except KeyError:
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logger.warning(
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f"Unable to create jpg because frame {self.thumbnail_data['frame_time']} is not in the cache"
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)
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return None
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if bounding_box:
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thickness = 2
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color = self.colormap[self.obj_data["label"]]
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# draw the bounding boxes on the frame
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box = self.thumbnail_data["box"]
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draw_box_with_label(
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best_frame,
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box[0],
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box[1],
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box[2],
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box[3],
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self.obj_data["label"],
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f"{int(self.thumbnail_data['score']*100)}% {int(self.thumbnail_data['area'])}",
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thickness=thickness,
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color=color,
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)
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if crop:
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box = self.thumbnail_data["box"]
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box_size = 300
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region = calculate_region(
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best_frame.shape,
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box[0],
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box[1],
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box[2],
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box[3],
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box_size,
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multiplier=1.1,
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)
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best_frame = best_frame[region[1] : region[3], region[0] : region[2]]
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if height:
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width = int(height * best_frame.shape[1] / best_frame.shape[0])
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best_frame = cv2.resize(
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best_frame, dsize=(width, height), interpolation=cv2.INTER_AREA
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)
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if timestamp:
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color = self.camera_config.timestamp_style.color
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draw_timestamp(
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best_frame,
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self.thumbnail_data["frame_time"],
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self.camera_config.timestamp_style.format,
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font_effect=self.camera_config.timestamp_style.effect,
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font_thickness=self.camera_config.timestamp_style.thickness,
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font_color=(color.blue, color.green, color.red),
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position=self.camera_config.timestamp_style.position,
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)
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ret, jpg = cv2.imencode(
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".jpg", best_frame, [int(cv2.IMWRITE_JPEG_QUALITY), quality]
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)
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if ret:
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return jpg.tobytes()
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else:
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return None
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def zone_filtered(obj: TrackedObject, object_config):
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object_name = obj.obj_data["label"]
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if object_name in object_config:
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obj_settings = object_config[object_name]
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# if the min area is larger than the
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# detected object, don't add it to detected objects
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if obj_settings.min_area > obj.obj_data["area"]:
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return True
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# if the detected object is larger than the
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# max area, don't add it to detected objects
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if obj_settings.max_area < obj.obj_data["area"]:
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return True
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# if the score is lower than the threshold, skip
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if obj_settings.threshold > obj.computed_score:
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return True
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# if the object is not proportionally wide enough
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if obj_settings.min_ratio > obj.obj_data["ratio"]:
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return True
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# if the object is proportionally too wide
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if obj_settings.max_ratio < obj.obj_data["ratio"]:
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return True
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return False
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# Maintains the state of a camera
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class CameraState:
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def __init__(
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self, name, config: FrigateConfig, frame_manager: SharedMemoryFrameManager
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):
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self.name = name
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self.config = config
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self.camera_config = config.cameras[name]
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self.frame_manager = frame_manager
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self.best_objects: dict[str, TrackedObject] = {}
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self.object_counts = defaultdict(int)
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self.tracked_objects: dict[str, TrackedObject] = {}
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self.frame_cache = {}
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self.zone_objects = defaultdict(list)
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self._current_frame = np.zeros(self.camera_config.frame_shape_yuv, np.uint8)
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self.current_frame_lock = threading.Lock()
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self.current_frame_time = 0.0
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self.motion_boxes = []
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self.regions = []
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self.previous_frame_id = None
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self.callbacks = defaultdict(list)
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def get_current_frame(self, draw_options={}):
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with self.current_frame_lock:
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frame_copy = np.copy(self._current_frame)
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frame_time = self.current_frame_time
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tracked_objects = {k: v.to_dict() for k, v in self.tracked_objects.items()}
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motion_boxes = self.motion_boxes.copy()
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regions = self.regions.copy()
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frame_copy = cv2.cvtColor(frame_copy, cv2.COLOR_YUV2BGR_I420)
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# draw on the frame
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if draw_options.get("bounding_boxes"):
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# draw the bounding boxes on the frame
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for obj in tracked_objects.values():
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if obj["frame_time"] == frame_time:
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thickness = 2
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color = self.config.model.colormap[obj["label"]]
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else:
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thickness = 1
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color = (255, 0, 0)
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# draw the bounding boxes on the frame
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box = obj["box"]
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draw_box_with_label(
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frame_copy,
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box[0],
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box[1],
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box[2],
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box[3],
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obj["label"],
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f"{obj['score']:.0%} {int(obj['area'])}",
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thickness=thickness,
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color=color,
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)
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if draw_options.get("regions"):
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for region in regions:
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cv2.rectangle(
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frame_copy,
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(region[0], region[1]),
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(region[2], region[3]),
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(0, 255, 0),
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2,
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)
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|
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if draw_options.get("zones"):
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for name, zone in self.camera_config.zones.items():
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thickness = (
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8
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if any(
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name in obj["current_zones"] for obj in tracked_objects.values()
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)
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else 2
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)
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cv2.drawContours(frame_copy, [zone.contour], -1, zone.color, thickness)
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|
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if draw_options.get("mask"):
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mask_overlay = np.where(self.camera_config.motion.mask == [0])
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frame_copy[mask_overlay] = [0, 0, 0]
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|
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if draw_options.get("motion_boxes"):
|
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for m_box in motion_boxes:
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cv2.rectangle(
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frame_copy,
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(m_box[0], m_box[1]),
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(m_box[2], m_box[3]),
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(0, 0, 255),
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2,
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)
|
|
|
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if draw_options.get("timestamp"):
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color = self.camera_config.timestamp_style.color
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draw_timestamp(
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frame_copy,
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frame_time,
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self.camera_config.timestamp_style.format,
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font_effect=self.camera_config.timestamp_style.effect,
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font_thickness=self.camera_config.timestamp_style.thickness,
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font_color=(color.blue, color.green, color.red),
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position=self.camera_config.timestamp_style.position,
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)
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return frame_copy
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|
|
def finished(self, obj_id):
|
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del self.tracked_objects[obj_id]
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|
|
def on(self, event_type: str, callback: Callable[[dict], None]):
|
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self.callbacks[event_type].append(callback)
|
|
|
|
def update(self, frame_time, current_detections, motion_boxes, regions):
|
|
# get the new frame
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|
frame_id = f"{self.name}{frame_time}"
|
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current_frame = self.frame_manager.get(
|
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frame_id, self.camera_config.frame_shape_yuv
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)
|
|
|
|
tracked_objects = self.tracked_objects.copy()
|
|
current_ids = set(current_detections.keys())
|
|
previous_ids = set(tracked_objects.keys())
|
|
removed_ids = previous_ids.difference(current_ids)
|
|
new_ids = current_ids.difference(previous_ids)
|
|
updated_ids = current_ids.intersection(previous_ids)
|
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|
|
for id in new_ids:
|
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new_obj = tracked_objects[id] = TrackedObject(
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self.name,
|
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self.config.model.colormap,
|
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self.camera_config,
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self.frame_cache,
|
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current_detections[id],
|
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)
|
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|
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# call event handlers
|
|
for c in self.callbacks["start"]:
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c(self.name, new_obj, frame_time)
|
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|
|
for id in updated_ids:
|
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updated_obj = tracked_objects[id]
|
|
thumb_update, significant_update = updated_obj.update(
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frame_time, current_detections[id]
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)
|
|
|
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if thumb_update:
|
|
# ensure this frame is stored in the cache
|
|
if (
|
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updated_obj.thumbnail_data["frame_time"] == frame_time
|
|
and frame_time not in self.frame_cache
|
|
):
|
|
self.frame_cache[frame_time] = np.copy(current_frame)
|
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|
|
updated_obj.last_updated = frame_time
|
|
|
|
# if it has been more than 5 seconds since the last thumb update
|
|
# and the last update is greater than the last publish or
|
|
# the object has changed significantly
|
|
if (
|
|
frame_time - updated_obj.last_published > 5
|
|
and updated_obj.last_updated > updated_obj.last_published
|
|
) or significant_update:
|
|
# call event handlers
|
|
for c in self.callbacks["update"]:
|
|
c(self.name, updated_obj, frame_time)
|
|
updated_obj.last_published = frame_time
|
|
|
|
for id in removed_ids:
|
|
# publish events to mqtt
|
|
removed_obj = tracked_objects[id]
|
|
if "end_time" not in removed_obj.obj_data:
|
|
removed_obj.obj_data["end_time"] = frame_time
|
|
for c in self.callbacks["end"]:
|
|
c(self.name, removed_obj, frame_time)
|
|
|
|
# TODO: can i switch to looking this up and only changing when an event ends?
|
|
# maintain best objects
|
|
for obj in tracked_objects.values():
|
|
object_type = obj.obj_data["label"]
|
|
# if the object's thumbnail is not from the current frame
|
|
if obj.false_positive or obj.thumbnail_data["frame_time"] != frame_time:
|
|
continue
|
|
if object_type in self.best_objects:
|
|
current_best = self.best_objects[object_type]
|
|
now = datetime.datetime.now().timestamp()
|
|
# if the object is a higher score than the current best score
|
|
# or the current object is older than desired, use the new object
|
|
if (
|
|
is_better_thumbnail(
|
|
current_best.thumbnail_data,
|
|
obj.thumbnail_data,
|
|
self.camera_config.frame_shape,
|
|
)
|
|
or (now - current_best.thumbnail_data["frame_time"])
|
|
> self.camera_config.best_image_timeout
|
|
):
|
|
self.best_objects[object_type] = obj
|
|
for c in self.callbacks["snapshot"]:
|
|
c(self.name, self.best_objects[object_type], frame_time)
|
|
else:
|
|
self.best_objects[object_type] = obj
|
|
for c in self.callbacks["snapshot"]:
|
|
c(self.name, self.best_objects[object_type], frame_time)
|
|
|
|
# update overall camera state for each object type
|
|
obj_counter = Counter(
|
|
obj.obj_data["label"]
|
|
for obj in tracked_objects.values()
|
|
if not obj.false_positive
|
|
)
|
|
|
|
# keep track of all labels detected for this camera
|
|
total_label_count = 0
|
|
|
|
# report on detected objects
|
|
for obj_name, count in obj_counter.items():
|
|
total_label_count += count
|
|
|
|
if count != self.object_counts[obj_name]:
|
|
self.object_counts[obj_name] = count
|
|
for c in self.callbacks["object_status"]:
|
|
c(self.name, obj_name, count)
|
|
|
|
# publish for all labels detected for this camera
|
|
if total_label_count != self.object_counts.get("all"):
|
|
self.object_counts["all"] = total_label_count
|
|
for c in self.callbacks["object_status"]:
|
|
c(self.name, "all", total_label_count)
|
|
|
|
# expire any objects that are >0 and no longer detected
|
|
expired_objects = [
|
|
obj_name
|
|
for obj_name, count in self.object_counts.items()
|
|
if count > 0 and obj_name not in obj_counter
|
|
]
|
|
for obj_name in expired_objects:
|
|
# Ignore the artificial all label
|
|
if obj_name == "all":
|
|
continue
|
|
|
|
self.object_counts[obj_name] = 0
|
|
for c in self.callbacks["object_status"]:
|
|
c(self.name, obj_name, 0)
|
|
for c in self.callbacks["snapshot"]:
|
|
c(self.name, self.best_objects[obj_name], frame_time)
|
|
|
|
# cleanup thumbnail frame cache
|
|
current_thumb_frames = {
|
|
obj.thumbnail_data["frame_time"]
|
|
for obj in tracked_objects.values()
|
|
if not obj.false_positive
|
|
}
|
|
current_best_frames = {
|
|
obj.thumbnail_data["frame_time"] for obj in self.best_objects.values()
|
|
}
|
|
thumb_frames_to_delete = [
|
|
t
|
|
for t in self.frame_cache.keys()
|
|
if t not in current_thumb_frames and t not in current_best_frames
|
|
]
|
|
for t in thumb_frames_to_delete:
|
|
del self.frame_cache[t]
|
|
|
|
with self.current_frame_lock:
|
|
self.tracked_objects = tracked_objects
|
|
self.current_frame_time = frame_time
|
|
self.motion_boxes = motion_boxes
|
|
self.regions = regions
|
|
self._current_frame = current_frame
|
|
if self.previous_frame_id is not None:
|
|
self.frame_manager.close(self.previous_frame_id)
|
|
self.previous_frame_id = frame_id
|
|
|
|
|
|
class TrackedObjectProcessor(threading.Thread):
|
|
def __init__(
|
|
self,
|
|
config: FrigateConfig,
|
|
dispatcher: Dispatcher,
|
|
tracked_objects_queue,
|
|
event_queue,
|
|
event_processed_queue,
|
|
video_output_queue,
|
|
recordings_info_queue,
|
|
stop_event,
|
|
):
|
|
threading.Thread.__init__(self)
|
|
self.name = "detected_frames_processor"
|
|
self.config = config
|
|
self.dispatcher = dispatcher
|
|
self.tracked_objects_queue = tracked_objects_queue
|
|
self.event_queue = event_queue
|
|
self.event_processed_queue = event_processed_queue
|
|
self.video_output_queue = video_output_queue
|
|
self.recordings_info_queue = recordings_info_queue
|
|
self.stop_event = stop_event
|
|
self.camera_states: dict[str, CameraState] = {}
|
|
self.frame_manager = SharedMemoryFrameManager()
|
|
self.last_motion_detected: dict[str, float] = {}
|
|
|
|
def start(camera, obj: TrackedObject, current_frame_time):
|
|
self.event_queue.put(
|
|
(EventTypeEnum.tracked_object, "start", camera, obj.to_dict())
|
|
)
|
|
|
|
def update(camera, obj: TrackedObject, current_frame_time):
|
|
obj.has_snapshot = self.should_save_snapshot(camera, obj)
|
|
obj.has_clip = self.should_retain_recording(camera, obj)
|
|
after = obj.to_dict()
|
|
message = {
|
|
"before": obj.previous,
|
|
"after": after,
|
|
"type": "new" if obj.previous["false_positive"] else "update",
|
|
}
|
|
self.dispatcher.publish("events", json.dumps(message), retain=False)
|
|
obj.previous = after
|
|
self.event_queue.put(
|
|
(
|
|
EventTypeEnum.tracked_object,
|
|
"update",
|
|
camera,
|
|
obj.to_dict(include_thumbnail=True),
|
|
)
|
|
)
|
|
|
|
def end(camera, obj: TrackedObject, current_frame_time):
|
|
# populate has_snapshot
|
|
obj.has_snapshot = self.should_save_snapshot(camera, obj)
|
|
obj.has_clip = self.should_retain_recording(camera, obj)
|
|
|
|
# write the snapshot to disk
|
|
if obj.has_snapshot:
|
|
snapshot_config: SnapshotsConfig = self.config.cameras[camera].snapshots
|
|
jpg_bytes = obj.get_jpg_bytes(
|
|
timestamp=snapshot_config.timestamp,
|
|
bounding_box=snapshot_config.bounding_box,
|
|
crop=snapshot_config.crop,
|
|
height=snapshot_config.height,
|
|
quality=snapshot_config.quality,
|
|
)
|
|
if jpg_bytes is None:
|
|
logger.warning(f"Unable to save snapshot for {obj.obj_data['id']}.")
|
|
else:
|
|
with open(
|
|
os.path.join(CLIPS_DIR, f"{camera}-{obj.obj_data['id']}.jpg"),
|
|
"wb",
|
|
) as j:
|
|
j.write(jpg_bytes)
|
|
|
|
# write clean snapshot if enabled
|
|
if snapshot_config.clean_copy:
|
|
png_bytes = obj.get_clean_png()
|
|
if png_bytes is None:
|
|
logger.warning(
|
|
f"Unable to save clean snapshot for {obj.obj_data['id']}."
|
|
)
|
|
else:
|
|
with open(
|
|
os.path.join(
|
|
CLIPS_DIR,
|
|
f"{camera}-{obj.obj_data['id']}-clean.png",
|
|
),
|
|
"wb",
|
|
) as p:
|
|
p.write(png_bytes)
|
|
|
|
if not obj.false_positive:
|
|
message = {
|
|
"before": obj.previous,
|
|
"after": obj.to_dict(),
|
|
"type": "end",
|
|
}
|
|
self.dispatcher.publish("events", json.dumps(message), retain=False)
|
|
|
|
self.event_queue.put(
|
|
(
|
|
EventTypeEnum.tracked_object,
|
|
"end",
|
|
camera,
|
|
obj.to_dict(include_thumbnail=True),
|
|
)
|
|
)
|
|
|
|
def snapshot(camera, obj: TrackedObject, current_frame_time):
|
|
mqtt_config: MqttConfig = self.config.cameras[camera].mqtt
|
|
if mqtt_config.enabled and self.should_mqtt_snapshot(camera, obj):
|
|
jpg_bytes = obj.get_jpg_bytes(
|
|
timestamp=mqtt_config.timestamp,
|
|
bounding_box=mqtt_config.bounding_box,
|
|
crop=mqtt_config.crop,
|
|
height=mqtt_config.height,
|
|
quality=mqtt_config.quality,
|
|
)
|
|
|
|
if jpg_bytes is None:
|
|
logger.warning(
|
|
f"Unable to send mqtt snapshot for {obj.obj_data['id']}."
|
|
)
|
|
else:
|
|
self.dispatcher.publish(
|
|
f"{camera}/{obj.obj_data['label']}/snapshot",
|
|
jpg_bytes,
|
|
retain=True,
|
|
)
|
|
|
|
def object_status(camera, object_name, status):
|
|
self.dispatcher.publish(f"{camera}/{object_name}", status, retain=False)
|
|
|
|
for camera in self.config.cameras.keys():
|
|
camera_state = CameraState(camera, self.config, self.frame_manager)
|
|
camera_state.on("start", start)
|
|
camera_state.on("update", update)
|
|
camera_state.on("end", end)
|
|
camera_state.on("snapshot", snapshot)
|
|
camera_state.on("object_status", object_status)
|
|
self.camera_states[camera] = camera_state
|
|
|
|
# {
|
|
# 'zone_name': {
|
|
# 'person': {
|
|
# 'camera_1': 2,
|
|
# 'camera_2': 1
|
|
# }
|
|
# }
|
|
# }
|
|
self.zone_data = defaultdict(lambda: defaultdict(dict))
|
|
|
|
def should_save_snapshot(self, camera, obj: TrackedObject):
|
|
if obj.false_positive:
|
|
return False
|
|
|
|
snapshot_config: SnapshotsConfig = self.config.cameras[camera].snapshots
|
|
|
|
if not snapshot_config.enabled:
|
|
return False
|
|
|
|
# object never changed position
|
|
if obj.obj_data["position_changes"] == 0:
|
|
return False
|
|
|
|
# if there are required zones and there is no overlap
|
|
required_zones = snapshot_config.required_zones
|
|
if len(required_zones) > 0 and not set(obj.entered_zones) & set(required_zones):
|
|
logger.debug(
|
|
f"Not creating snapshot for {obj.obj_data['id']} because it did not enter required zones"
|
|
)
|
|
return False
|
|
|
|
return True
|
|
|
|
def should_retain_recording(self, camera, obj: TrackedObject):
|
|
if obj.false_positive:
|
|
return False
|
|
|
|
record_config: RecordConfig = self.config.cameras[camera].record
|
|
|
|
# Recording is disabled
|
|
if not record_config.enabled:
|
|
return False
|
|
|
|
# object never changed position
|
|
if obj.obj_data["position_changes"] == 0:
|
|
return False
|
|
|
|
# If there are required zones and there is no overlap
|
|
required_zones = record_config.events.required_zones
|
|
if len(required_zones) > 0 and not set(obj.entered_zones) & set(required_zones):
|
|
logger.debug(
|
|
f"Not creating clip for {obj.obj_data['id']} because it did not enter required zones"
|
|
)
|
|
return False
|
|
|
|
# If the required objects are not present
|
|
if (
|
|
record_config.events.objects is not None
|
|
and obj.obj_data["label"] not in record_config.events.objects
|
|
):
|
|
logger.debug(
|
|
f"Not creating clip for {obj.obj_data['id']} because it did not contain required objects"
|
|
)
|
|
return False
|
|
|
|
return True
|
|
|
|
def should_mqtt_snapshot(self, camera, obj: TrackedObject):
|
|
# object never changed position
|
|
if obj.obj_data["position_changes"] == 0:
|
|
return False
|
|
|
|
# if there are required zones and there is no overlap
|
|
required_zones = self.config.cameras[camera].mqtt.required_zones
|
|
if len(required_zones) > 0 and not set(obj.entered_zones) & set(required_zones):
|
|
logger.debug(
|
|
f"Not sending mqtt for {obj.obj_data['id']} because it did not enter required zones"
|
|
)
|
|
return False
|
|
|
|
return True
|
|
|
|
def update_mqtt_motion(self, camera, frame_time, motion_boxes):
|
|
# publish if motion is currently being detected
|
|
if motion_boxes:
|
|
# only send ON if motion isn't already active
|
|
if self.last_motion_detected.get(camera, 0) == 0:
|
|
self.dispatcher.publish(
|
|
f"{camera}/motion",
|
|
"ON",
|
|
retain=False,
|
|
)
|
|
|
|
# always updated latest motion
|
|
self.last_motion_detected[camera] = frame_time
|
|
elif self.last_motion_detected.get(camera, 0) > 0:
|
|
mqtt_delay = self.config.cameras[camera].motion.mqtt_off_delay
|
|
|
|
# If no motion, make sure the off_delay has passed
|
|
if frame_time - self.last_motion_detected.get(camera, 0) >= mqtt_delay:
|
|
self.dispatcher.publish(
|
|
f"{camera}/motion",
|
|
"OFF",
|
|
retain=False,
|
|
)
|
|
# reset the last_motion so redundant `off` commands aren't sent
|
|
self.last_motion_detected[camera] = 0
|
|
|
|
def get_best(self, camera, label):
|
|
# TODO: need a lock here
|
|
camera_state = self.camera_states[camera]
|
|
if label in camera_state.best_objects:
|
|
best_obj = camera_state.best_objects[label]
|
|
best = best_obj.thumbnail_data.copy()
|
|
best["frame"] = camera_state.frame_cache.get(
|
|
best_obj.thumbnail_data["frame_time"]
|
|
)
|
|
return best
|
|
else:
|
|
return {}
|
|
|
|
def get_current_frame(self, camera, draw_options={}):
|
|
if camera == "birdseye":
|
|
return self.frame_manager.get(
|
|
"birdseye",
|
|
(self.config.birdseye.height * 3 // 2, self.config.birdseye.width),
|
|
)
|
|
|
|
return self.camera_states[camera].get_current_frame(draw_options)
|
|
|
|
def get_current_frame_time(self, camera) -> int:
|
|
"""Returns the latest frame time for a given camera."""
|
|
return self.camera_states[camera].current_frame_time
|
|
|
|
def run(self):
|
|
while not self.stop_event.is_set():
|
|
try:
|
|
(
|
|
camera,
|
|
frame_time,
|
|
current_tracked_objects,
|
|
motion_boxes,
|
|
regions,
|
|
) = self.tracked_objects_queue.get(True, 1)
|
|
except queue.Empty:
|
|
continue
|
|
|
|
camera_state = self.camera_states[camera]
|
|
|
|
camera_state.update(
|
|
frame_time, current_tracked_objects, motion_boxes, regions
|
|
)
|
|
|
|
self.update_mqtt_motion(camera, frame_time, motion_boxes)
|
|
|
|
tracked_objects = [
|
|
o.to_dict() for o in camera_state.tracked_objects.values()
|
|
]
|
|
|
|
self.video_output_queue.put(
|
|
(
|
|
camera,
|
|
frame_time,
|
|
tracked_objects,
|
|
motion_boxes,
|
|
regions,
|
|
)
|
|
)
|
|
|
|
# send info on this frame to the recordings maintainer
|
|
self.recordings_info_queue.put(
|
|
(
|
|
camera,
|
|
frame_time,
|
|
tracked_objects,
|
|
motion_boxes,
|
|
regions,
|
|
)
|
|
)
|
|
|
|
# update zone counts for each label
|
|
# for each zone in the current camera
|
|
for zone in self.config.cameras[camera].zones.keys():
|
|
# count labels for the camera in the zone
|
|
obj_counter = Counter(
|
|
obj.obj_data["label"]
|
|
for obj in camera_state.tracked_objects.values()
|
|
if zone in obj.current_zones and not obj.false_positive
|
|
)
|
|
total_label_count = 0
|
|
|
|
# update counts and publish status
|
|
for label in set(self.zone_data[zone].keys()) | set(obj_counter.keys()):
|
|
# Ignore the artificial all label
|
|
if label == "all":
|
|
continue
|
|
|
|
# if we have previously published a count for this zone/label
|
|
zone_label = self.zone_data[zone][label]
|
|
if camera in zone_label:
|
|
current_count = sum(zone_label.values())
|
|
zone_label[camera] = (
|
|
obj_counter[label] if label in obj_counter else 0
|
|
)
|
|
new_count = sum(zone_label.values())
|
|
if new_count != current_count:
|
|
self.dispatcher.publish(
|
|
f"{zone}/{label}",
|
|
new_count,
|
|
retain=False,
|
|
)
|
|
|
|
# Set the count for the /zone/all topic.
|
|
total_label_count += new_count
|
|
|
|
# if this is a new zone/label combo for this camera
|
|
else:
|
|
if label in obj_counter:
|
|
zone_label[camera] = obj_counter[label]
|
|
self.dispatcher.publish(
|
|
f"{zone}/{label}",
|
|
obj_counter[label],
|
|
retain=False,
|
|
)
|
|
|
|
# Set the count for the /zone/all topic.
|
|
total_label_count += obj_counter[label]
|
|
|
|
# if we have previously published a count for this zone all labels
|
|
zone_label = self.zone_data[zone]["all"]
|
|
if camera in zone_label:
|
|
current_count = sum(zone_label.values())
|
|
zone_label[camera] = total_label_count
|
|
new_count = sum(zone_label.values())
|
|
|
|
if new_count != current_count:
|
|
self.dispatcher.publish(
|
|
f"{zone}/all",
|
|
new_count,
|
|
retain=False,
|
|
)
|
|
# if this is a new zone all label for this camera
|
|
else:
|
|
zone_label[camera] = total_label_count
|
|
self.dispatcher.publish(
|
|
f"{zone}/all",
|
|
total_label_count,
|
|
retain=False,
|
|
)
|
|
|
|
# cleanup event finished queue
|
|
while not self.event_processed_queue.empty():
|
|
event_id, camera = self.event_processed_queue.get()
|
|
self.camera_states[camera].finished(event_id)
|
|
|
|
logger.info("Exiting object processor...")
|