mirror of
https://github.com/blakeblackshear/frigate.git
synced 2024-12-23 19:11:14 +01:00
592 lines
22 KiB
Python
592 lines
22 KiB
Python
"""Maintain review segments in db."""
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import json
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import logging
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import os
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import random
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import string
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import sys
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import threading
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from enum import Enum
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from multiprocessing.synchronize import Event as MpEvent
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from pathlib import Path
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from typing import Optional
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import cv2
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import numpy as np
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from frigate.comms.config_updater import ConfigSubscriber
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from frigate.comms.detections_updater import DetectionSubscriber, DetectionTypeEnum
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from frigate.comms.inter_process import InterProcessRequestor
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from frigate.config import CameraConfig, FrigateConfig
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from frigate.const import (
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ALL_ATTRIBUTE_LABELS,
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CLEAR_ONGOING_REVIEW_SEGMENTS,
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CLIPS_DIR,
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UPSERT_REVIEW_SEGMENT,
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)
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from frigate.events.external import ManualEventState
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from frigate.models import ReviewSegment
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from frigate.object_processing import TrackedObject
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from frigate.util.image import SharedMemoryFrameManager, calculate_16_9_crop
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logger = logging.getLogger(__name__)
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THUMB_HEIGHT = 180
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THUMB_WIDTH = 320
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THRESHOLD_ALERT_ACTIVITY = 120
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THRESHOLD_DETECTION_ACTIVITY = 30
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class SeverityEnum(str, Enum):
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alert = "alert"
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detection = "detection"
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class PendingReviewSegment:
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def __init__(
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self,
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camera: str,
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frame_time: float,
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severity: SeverityEnum,
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detections: dict[str, str],
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sub_labels: set[str],
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zones: list[str],
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audio: set[str],
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):
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rand_id = "".join(random.choices(string.ascii_lowercase + string.digits, k=6))
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self.id = f"{frame_time}-{rand_id}"
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self.camera = camera
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self.start_time = frame_time
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self.severity = severity
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self.detections = detections
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self.sub_labels = sub_labels
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self.zones = zones
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self.audio = audio
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self.last_update = frame_time
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# thumbnail
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self._frame = np.zeros((THUMB_HEIGHT * 3 // 2, THUMB_WIDTH), np.uint8)
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self.has_frame = False
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self.frame_active_count = 0
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self.frame_path = os.path.join(
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CLIPS_DIR, f"review/thumb-{self.camera}-{self.id}.webp"
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)
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def update_frame(
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self, camera_config: CameraConfig, frame, objects: list[TrackedObject]
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):
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min_x = camera_config.frame_shape[1]
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min_y = camera_config.frame_shape[0]
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max_x = 0
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max_y = 0
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# find bounds for all boxes
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for o in objects:
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min_x = min(o["box"][0], min_x)
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min_y = min(o["box"][1], min_y)
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max_x = max(o["box"][2], max_x)
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max_y = max(o["box"][3], max_y)
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region = calculate_16_9_crop(
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camera_config.frame_shape, min_x, min_y, max_x, max_y
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)
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# could not find suitable 16:9 region
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if not region:
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return
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self.frame_active_count = len(objects)
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color_frame = cv2.cvtColor(frame, cv2.COLOR_YUV2BGR_I420)
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color_frame = color_frame[region[1] : region[3], region[0] : region[2]]
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width = int(THUMB_HEIGHT * color_frame.shape[1] / color_frame.shape[0])
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self._frame = cv2.resize(
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color_frame, dsize=(width, THUMB_HEIGHT), interpolation=cv2.INTER_AREA
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)
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if self._frame is not None:
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self.has_frame = True
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cv2.imwrite(
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self.frame_path, self._frame, [int(cv2.IMWRITE_WEBP_QUALITY), 60]
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)
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def save_full_frame(self, camera_config: CameraConfig, frame):
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color_frame = cv2.cvtColor(frame, cv2.COLOR_YUV2BGR_I420)
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width = int(THUMB_HEIGHT * color_frame.shape[1] / color_frame.shape[0])
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self._frame = cv2.resize(
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color_frame, dsize=(width, THUMB_HEIGHT), interpolation=cv2.INTER_AREA
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)
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if self._frame is not None:
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self.has_frame = True
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cv2.imwrite(
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self.frame_path, self._frame, [int(cv2.IMWRITE_WEBP_QUALITY), 60]
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)
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def get_data(self, ended: bool) -> dict:
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return {
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ReviewSegment.id: self.id,
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ReviewSegment.camera: self.camera,
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ReviewSegment.start_time: self.start_time,
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ReviewSegment.end_time: self.last_update if ended else None,
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ReviewSegment.severity: self.severity.value,
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ReviewSegment.thumb_path: self.frame_path,
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ReviewSegment.data: {
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"detections": list(set(self.detections.keys())),
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"objects": list(set(self.detections.values())),
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"sub_labels": list(self.sub_labels),
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"zones": self.zones,
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"audio": list(self.audio),
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},
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}.copy()
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class ReviewSegmentMaintainer(threading.Thread):
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"""Maintain review segments."""
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def __init__(self, config: FrigateConfig, stop_event: MpEvent):
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threading.Thread.__init__(self)
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self.name = "review_segment_maintainer"
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self.config = config
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self.active_review_segments: dict[str, Optional[PendingReviewSegment]] = {}
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self.frame_manager = SharedMemoryFrameManager()
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# create communication for review segments
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self.requestor = InterProcessRequestor()
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self.config_subscriber = ConfigSubscriber("config/record/")
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self.detection_subscriber = DetectionSubscriber(DetectionTypeEnum.all)
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# manual events
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self.indefinite_events: dict[str, dict[str, any]] = {}
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# ensure dirs
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Path(os.path.join(CLIPS_DIR, "review")).mkdir(exist_ok=True)
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self.stop_event = stop_event
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# clear ongoing review segments from last instance
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self.requestor.send_data(CLEAR_ONGOING_REVIEW_SEGMENTS, "")
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def new_segment(
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self,
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segment: PendingReviewSegment,
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) -> None:
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"""New segment."""
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new_data = segment.get_data(ended=False)
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self.requestor.send_data(UPSERT_REVIEW_SEGMENT, new_data)
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start_data = {k.name: v for k, v in new_data.items()}
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self.requestor.send_data(
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"reviews",
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json.dumps(
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{
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"type": "new",
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"before": start_data,
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"after": start_data,
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}
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),
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)
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def update_segment(
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self,
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segment: PendingReviewSegment,
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camera_config: CameraConfig,
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frame,
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objects: list[TrackedObject],
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prev_data: dict[str, any],
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) -> None:
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"""Update segment."""
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if frame is not None:
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segment.update_frame(camera_config, frame, objects)
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new_data = segment.get_data(ended=False)
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self.requestor.send_data(UPSERT_REVIEW_SEGMENT, new_data)
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self.requestor.send_data(
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"reviews",
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json.dumps(
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{
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"type": "update",
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"before": {k.name: v for k, v in prev_data.items()},
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"after": {k.name: v for k, v in new_data.items()},
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}
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),
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)
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def end_segment(
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self,
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segment: PendingReviewSegment,
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prev_data: dict[str, any],
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) -> None:
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"""End segment."""
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final_data = segment.get_data(ended=True)
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self.requestor.send_data(UPSERT_REVIEW_SEGMENT, final_data)
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self.requestor.send_data(
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"reviews",
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json.dumps(
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{
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"type": "end",
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"before": {k.name: v for k, v in prev_data.items()},
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"after": {k.name: v for k, v in final_data.items()},
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}
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),
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)
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self.active_review_segments[segment.camera] = None
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def update_existing_segment(
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self,
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segment: PendingReviewSegment,
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frame_time: float,
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objects: list[TrackedObject],
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) -> None:
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"""Validate if existing review segment should continue."""
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camera_config = self.config.cameras[segment.camera]
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active_objects = get_active_objects(frame_time, camera_config, objects)
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prev_data = segment.get_data(False)
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if len(active_objects) > 0:
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should_update = False
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if frame_time > segment.last_update:
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segment.last_update = frame_time
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for object in active_objects:
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if not object["sub_label"]:
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segment.detections[object["id"]] = object["label"]
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elif object["sub_label"][0] in ALL_ATTRIBUTE_LABELS:
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segment.detections[object["id"]] = object["sub_label"][0]
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else:
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segment.detections[object["id"]] = f'{object["label"]}-verified'
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segment.sub_labels.add(object["sub_label"][0])
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# if object is alert label
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# and has entered required zones or required zones is not set
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# mark this review as alert
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if (
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segment.severity != SeverityEnum.alert
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and object["label"] in camera_config.review.alerts.labels
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and (
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not camera_config.review.alerts.required_zones
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or (
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len(object["current_zones"]) > 0
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and set(object["current_zones"])
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& set(camera_config.review.alerts.required_zones)
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)
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)
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):
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segment.severity = SeverityEnum.alert
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should_update = True
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# keep zones up to date
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if len(object["current_zones"]) > 0:
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for zone in object["current_zones"]:
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if zone not in segment.zones:
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segment.zones.append(zone)
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if len(active_objects) > segment.frame_active_count:
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should_update = True
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if should_update:
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try:
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frame_id = f"{camera_config.name}{frame_time}"
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yuv_frame = self.frame_manager.get(
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frame_id, camera_config.frame_shape_yuv
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)
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self.update_segment(
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segment, camera_config, yuv_frame, active_objects, prev_data
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)
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self.frame_manager.close(frame_id)
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except FileNotFoundError:
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return
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else:
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if not segment.has_frame:
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try:
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frame_id = f"{camera_config.name}{frame_time}"
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yuv_frame = self.frame_manager.get(
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frame_id, camera_config.frame_shape_yuv
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)
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segment.save_full_frame(camera_config, yuv_frame)
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self.frame_manager.close(frame_id)
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self.update_segment(segment, camera_config, None, [], prev_data)
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except FileNotFoundError:
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return
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if segment.severity == SeverityEnum.alert and frame_time > (
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segment.last_update + THRESHOLD_ALERT_ACTIVITY
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):
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self.end_segment(segment, prev_data)
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elif frame_time > (segment.last_update + THRESHOLD_DETECTION_ACTIVITY):
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self.end_segment(segment, prev_data)
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def check_if_new_segment(
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self,
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camera: str,
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frame_time: float,
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objects: list[TrackedObject],
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) -> None:
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"""Check if a new review segment should be created."""
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camera_config = self.config.cameras[camera]
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active_objects = get_active_objects(frame_time, camera_config, objects)
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if len(active_objects) > 0:
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detections: dict[str, str] = {}
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sub_labels = set()
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zones: list[str] = []
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severity = None
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for object in active_objects:
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if not object["sub_label"]:
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detections[object["id"]] = object["label"]
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elif object["sub_label"][0] in ALL_ATTRIBUTE_LABELS:
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detections[object["id"]] = object["sub_label"][0]
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else:
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detections[object["id"]] = f'{object["label"]}-verified'
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sub_labels.add(object["sub_label"][0])
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# if object is alert label
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# and has entered required zones or required zones is not set
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# mark this review as alert
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if (
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severity != SeverityEnum.alert
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and object["label"] in camera_config.review.alerts.labels
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and (
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not camera_config.review.alerts.required_zones
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or (
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len(object["current_zones"]) > 0
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and set(object["current_zones"])
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& set(camera_config.review.alerts.required_zones)
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)
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)
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):
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severity = SeverityEnum.alert
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# if object is detection label
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# and review is not already a detection or alert
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# and has entered required zones or required zones is not set
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# mark this review as alert
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if (
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not severity
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and (
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camera_config.review.detections.labels is None
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or object["label"] in (camera_config.review.detections.labels)
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)
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and (
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not camera_config.review.detections.required_zones
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or (
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len(object["current_zones"]) > 0
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and set(object["current_zones"])
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& set(camera_config.review.detections.required_zones)
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)
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)
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):
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severity = SeverityEnum.detection
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for zone in object["current_zones"]:
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if zone not in zones:
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zones.append(zone)
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if severity:
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self.active_review_segments[camera] = PendingReviewSegment(
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camera,
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frame_time,
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severity,
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detections,
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sub_labels=sub_labels,
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audio=set(),
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zones=zones,
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)
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try:
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frame_id = f"{camera_config.name}{frame_time}"
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yuv_frame = self.frame_manager.get(
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frame_id, camera_config.frame_shape_yuv
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)
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self.active_review_segments[camera].update_frame(
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camera_config, yuv_frame, active_objects
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)
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self.frame_manager.close(frame_id)
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self.new_segment(self.active_review_segments[camera])
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except FileNotFoundError:
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return
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def run(self) -> None:
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while not self.stop_event.is_set():
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# check if there is an updated config
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while True:
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(
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updated_topic,
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updated_record_config,
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) = self.config_subscriber.check_for_update()
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if not updated_topic:
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break
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camera_name = updated_topic.rpartition("/")[-1]
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self.config.cameras[camera_name].record = updated_record_config
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(topic, data) = self.detection_subscriber.get_data(timeout=1)
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if not topic:
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continue
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if topic == DetectionTypeEnum.video:
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(
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camera,
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frame_time,
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current_tracked_objects,
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motion_boxes,
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regions,
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) = data
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elif topic == DetectionTypeEnum.audio:
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(
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camera,
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frame_time,
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dBFS,
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audio_detections,
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) = data
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elif topic == DetectionTypeEnum.api:
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(
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camera,
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frame_time,
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manual_info,
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) = data
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if camera not in self.indefinite_events:
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self.indefinite_events[camera] = {}
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current_segment = self.active_review_segments.get(camera)
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if not self.config.cameras[camera].record.enabled:
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if current_segment:
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self.update_existing_segment(current_segment, frame_time, [])
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continue
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if current_segment is not None:
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if topic == DetectionTypeEnum.video:
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self.update_existing_segment(
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current_segment,
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frame_time,
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current_tracked_objects,
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)
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elif topic == DetectionTypeEnum.audio and len(audio_detections) > 0:
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camera_config = self.config.cameras[camera]
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if frame_time > current_segment.last_update:
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current_segment.last_update = frame_time
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for audio in audio_detections:
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if audio in camera_config.review.alerts.labels:
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current_segment.audio.add(audio)
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current_segment.severity = SeverityEnum.alert
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elif (
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camera_config.review.detections.labels is None
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or audio in camera_config.review.detections.labels
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):
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current_segment.audio.add(audio)
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elif topic == DetectionTypeEnum.api:
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if manual_info["state"] == ManualEventState.complete:
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current_segment.detections[manual_info["event_id"]] = (
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manual_info["label"]
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)
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current_segment.severity = SeverityEnum.alert
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current_segment.last_update = manual_info["end_time"]
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elif manual_info["state"] == ManualEventState.start:
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self.indefinite_events[camera][manual_info["event_id"]] = (
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manual_info["label"]
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)
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current_segment.detections[manual_info["event_id"]] = (
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manual_info["label"]
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)
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current_segment.severity = SeverityEnum.alert
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# temporarily make it so this event can not end
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current_segment.last_update = sys.maxsize
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elif manual_info["state"] == ManualEventState.end:
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self.indefinite_events[camera].pop(manual_info["event_id"])
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current_segment.last_update = manual_info["end_time"]
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else:
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if topic == DetectionTypeEnum.video:
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self.check_if_new_segment(
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camera,
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frame_time,
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current_tracked_objects,
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)
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elif topic == DetectionTypeEnum.audio and len(audio_detections) > 0:
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severity = None
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camera_config = self.config.cameras[camera]
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detections = set()
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for audio in audio_detections:
|
|
if audio in camera_config.review.alerts.labels:
|
|
detections.add(audio)
|
|
severity = SeverityEnum.alert
|
|
elif (
|
|
camera_config.review.detections.labels is None
|
|
or audio in camera_config.review.detections.labels
|
|
):
|
|
detections.add(audio)
|
|
|
|
if not severity:
|
|
severity = SeverityEnum.detection
|
|
|
|
if severity:
|
|
self.active_review_segments[camera] = PendingReviewSegment(
|
|
camera,
|
|
frame_time,
|
|
severity,
|
|
{},
|
|
set(),
|
|
[],
|
|
detections,
|
|
)
|
|
elif topic == DetectionTypeEnum.api:
|
|
self.active_review_segments[camera] = PendingReviewSegment(
|
|
camera,
|
|
frame_time,
|
|
SeverityEnum.alert,
|
|
{manual_info["event_id"]: manual_info["label"]},
|
|
set(),
|
|
[],
|
|
set(),
|
|
)
|
|
|
|
if manual_info["state"] == ManualEventState.start:
|
|
self.indefinite_events[camera][manual_info["event_id"]] = (
|
|
manual_info["label"]
|
|
)
|
|
# temporarily make it so this event can not end
|
|
self.active_review_segments[camera].last_update = sys.maxsize
|
|
elif manual_info["state"] == ManualEventState.complete:
|
|
self.active_review_segments[camera].last_update = manual_info[
|
|
"end_time"
|
|
]
|
|
|
|
self.config_subscriber.stop()
|
|
self.requestor.stop()
|
|
self.detection_subscriber.stop()
|
|
logger.info("Exiting review maintainer...")
|
|
|
|
|
|
def get_active_objects(
|
|
frame_time: float, camera_config: CameraConfig, all_objects: list[TrackedObject]
|
|
) -> list[TrackedObject]:
|
|
"""get active objects for detection."""
|
|
return [
|
|
o
|
|
for o in all_objects
|
|
if o["motionless_count"]
|
|
< camera_config.detect.stationary.threshold # no stationary objects
|
|
and o["position_changes"] > 0 # object must have moved at least once
|
|
and o["frame_time"] == frame_time # object must be detected in this frame
|
|
and not o["false_positive"] # object must not be a false positive
|
|
and (
|
|
o["label"] in camera_config.review.alerts.labels
|
|
or (
|
|
camera_config.review.detections.labels is None
|
|
or o["label"] in camera_config.review.detections.labels
|
|
)
|
|
) # object must be in the alerts or detections label list
|
|
]
|