mirror of
https://github.com/blakeblackshear/frigate.git
synced 2024-12-19 19:06:16 +01:00
388 lines
12 KiB
Python
388 lines
12 KiB
Python
"""Utilities for builtin types manipulation."""
|
|
|
|
import copy
|
|
import datetime
|
|
import logging
|
|
import multiprocessing as mp
|
|
import queue
|
|
import re
|
|
import shlex
|
|
import urllib.parse
|
|
from collections import Counter
|
|
from collections.abc import Mapping
|
|
from pathlib import Path
|
|
from typing import Any, Optional, Tuple
|
|
|
|
import numpy as np
|
|
import pytz
|
|
import yaml
|
|
from ruamel.yaml import YAML
|
|
from tzlocal import get_localzone
|
|
from zoneinfo import ZoneInfoNotFoundError
|
|
|
|
from frigate.const import REGEX_HTTP_CAMERA_USER_PASS, REGEX_RTSP_CAMERA_USER_PASS
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class EventsPerSecond:
|
|
def __init__(self, max_events=1000, last_n_seconds=10):
|
|
self._start = None
|
|
self._max_events = max_events
|
|
self._last_n_seconds = last_n_seconds
|
|
self._timestamps = []
|
|
|
|
def start(self):
|
|
self._start = datetime.datetime.now().timestamp()
|
|
|
|
def update(self):
|
|
now = datetime.datetime.now().timestamp()
|
|
if self._start is None:
|
|
self._start = now
|
|
self._timestamps.append(now)
|
|
# truncate the list when it goes 100 over the max_size
|
|
if len(self._timestamps) > self._max_events + 100:
|
|
self._timestamps = self._timestamps[(1 - self._max_events) :]
|
|
self.expire_timestamps(now)
|
|
|
|
def eps(self):
|
|
now = datetime.datetime.now().timestamp()
|
|
if self._start is None:
|
|
self._start = now
|
|
# compute the (approximate) events in the last n seconds
|
|
self.expire_timestamps(now)
|
|
seconds = min(now - self._start, self._last_n_seconds)
|
|
# avoid divide by zero
|
|
if seconds == 0:
|
|
seconds = 1
|
|
return len(self._timestamps) / seconds
|
|
|
|
# remove aged out timestamps
|
|
def expire_timestamps(self, now):
|
|
threshold = now - self._last_n_seconds
|
|
while self._timestamps and self._timestamps[0] < threshold:
|
|
del self._timestamps[0]
|
|
|
|
|
|
def deep_merge(dct1: dict, dct2: dict, override=False, merge_lists=False) -> dict:
|
|
"""
|
|
:param dct1: First dict to merge
|
|
:param dct2: Second dict to merge
|
|
:param override: if same key exists in both dictionaries, should override? otherwise ignore. (default=True)
|
|
:return: The merge dictionary
|
|
"""
|
|
merged = copy.deepcopy(dct1)
|
|
for k, v2 in dct2.items():
|
|
if k in merged:
|
|
v1 = merged[k]
|
|
if isinstance(v1, dict) and isinstance(v2, Mapping):
|
|
merged[k] = deep_merge(v1, v2, override)
|
|
elif isinstance(v1, list) and isinstance(v2, list):
|
|
if merge_lists:
|
|
merged[k] = v1 + v2
|
|
else:
|
|
if override:
|
|
merged[k] = copy.deepcopy(v2)
|
|
else:
|
|
merged[k] = copy.deepcopy(v2)
|
|
return merged
|
|
|
|
|
|
def load_config_with_no_duplicates(raw_config) -> dict:
|
|
"""Get config ensuring duplicate keys are not allowed."""
|
|
|
|
# https://stackoverflow.com/a/71751051
|
|
# important to use SafeLoader here to avoid RCE
|
|
class PreserveDuplicatesLoader(yaml.loader.SafeLoader):
|
|
pass
|
|
|
|
def map_constructor(loader, node, deep=False):
|
|
keys = [loader.construct_object(node, deep=deep) for node, _ in node.value]
|
|
vals = [loader.construct_object(node, deep=deep) for _, node in node.value]
|
|
key_count = Counter(keys)
|
|
data = {}
|
|
for key, val in zip(keys, vals):
|
|
if key_count[key] > 1:
|
|
raise ValueError(
|
|
f"Config input {key} is defined multiple times for the same field, this is not allowed."
|
|
)
|
|
else:
|
|
data[key] = val
|
|
return data
|
|
|
|
PreserveDuplicatesLoader.add_constructor(
|
|
yaml.resolver.BaseResolver.DEFAULT_MAPPING_TAG, map_constructor
|
|
)
|
|
return yaml.load(raw_config, PreserveDuplicatesLoader)
|
|
|
|
|
|
def clean_camera_user_pass(line: str) -> str:
|
|
"""Removes user and password from line."""
|
|
rtsp_cleaned = re.sub(REGEX_RTSP_CAMERA_USER_PASS, "://*:*@", line)
|
|
return re.sub(REGEX_HTTP_CAMERA_USER_PASS, "user=*&password=*", rtsp_cleaned)
|
|
|
|
|
|
def escape_special_characters(path: str) -> str:
|
|
"""Cleans reserved characters to encodings for ffmpeg."""
|
|
if len(path) > 1000:
|
|
return ValueError("Input too long to check")
|
|
|
|
try:
|
|
found = re.search(REGEX_RTSP_CAMERA_USER_PASS, path).group(0)[3:-1]
|
|
pw = found[(found.index(":") + 1) :]
|
|
return path.replace(pw, urllib.parse.quote_plus(pw))
|
|
except AttributeError:
|
|
# path does not have user:pass
|
|
return path
|
|
|
|
|
|
def get_ffmpeg_arg_list(arg: Any) -> list:
|
|
"""Use arg if list or convert to list format."""
|
|
return arg if isinstance(arg, list) else shlex.split(arg)
|
|
|
|
|
|
def load_labels(path: Optional[str], encoding="utf-8", prefill=91):
|
|
"""Loads labels from file (with or without index numbers).
|
|
Args:
|
|
path: path to label file.
|
|
encoding: label file encoding.
|
|
Returns:
|
|
Dictionary mapping indices to labels.
|
|
"""
|
|
if path is None:
|
|
return {}
|
|
|
|
with open(path, "r", encoding=encoding) as f:
|
|
labels = {index: "unknown" for index in range(prefill)}
|
|
lines = f.readlines()
|
|
if not lines:
|
|
return {}
|
|
|
|
if lines[0].split(" ", maxsplit=1)[0].isdigit():
|
|
pairs = [line.split(" ", maxsplit=1) for line in lines]
|
|
labels.update({int(index): label.strip() for index, label in pairs})
|
|
else:
|
|
labels.update({index: line.strip() for index, line in enumerate(lines)})
|
|
return labels
|
|
|
|
|
|
def get_tz_modifiers(tz_name: str) -> Tuple[str, str, int]:
|
|
seconds_offset = (
|
|
datetime.datetime.now(pytz.timezone(tz_name)).utcoffset().total_seconds()
|
|
)
|
|
hours_offset = int(seconds_offset / 60 / 60)
|
|
minutes_offset = int(seconds_offset / 60 - hours_offset * 60)
|
|
hour_modifier = f"{hours_offset} hour"
|
|
minute_modifier = f"{minutes_offset} minute"
|
|
return hour_modifier, minute_modifier, seconds_offset
|
|
|
|
|
|
def to_relative_box(
|
|
width: int, height: int, box: Tuple[int, int, int, int]
|
|
) -> Tuple[int, int, int, int]:
|
|
return (
|
|
box[0] / width, # x
|
|
box[1] / height, # y
|
|
(box[2] - box[0]) / width, # w
|
|
(box[3] - box[1]) / height, # h
|
|
)
|
|
|
|
|
|
def create_mask(frame_shape, mask):
|
|
mask_img = np.zeros(frame_shape, np.uint8)
|
|
mask_img[:] = 255
|
|
|
|
|
|
def update_yaml_from_url(file_path, url):
|
|
parsed_url = urllib.parse.urlparse(url)
|
|
query_string = urllib.parse.parse_qs(parsed_url.query, keep_blank_values=True)
|
|
|
|
for key_path_str, new_value_list in query_string.items():
|
|
key_path = key_path_str.split(".")
|
|
for i in range(len(key_path)):
|
|
try:
|
|
index = int(key_path[i])
|
|
key_path[i] = (key_path[i - 1], index)
|
|
key_path.pop(i - 1)
|
|
except ValueError:
|
|
pass
|
|
|
|
if len(new_value_list) > 1:
|
|
update_yaml_file(file_path, key_path, new_value_list)
|
|
else:
|
|
value = str(new_value_list[0])
|
|
|
|
if value.isnumeric():
|
|
value = int(value)
|
|
|
|
update_yaml_file(file_path, key_path, value)
|
|
|
|
|
|
def update_yaml_file(file_path, key_path, new_value):
|
|
yaml = YAML()
|
|
yaml.indent(mapping=2, sequence=4, offset=2)
|
|
with open(file_path, "r") as f:
|
|
data = yaml.load(f)
|
|
|
|
data = update_yaml(data, key_path, new_value)
|
|
with open(file_path, "w") as f:
|
|
yaml.dump(data, f)
|
|
|
|
|
|
def update_yaml(data, key_path, new_value):
|
|
temp = data
|
|
for key in key_path[:-1]:
|
|
if isinstance(key, tuple):
|
|
if key[0] not in temp:
|
|
temp[key[0]] = [{}] * max(1, key[1] + 1)
|
|
elif len(temp[key[0]]) <= key[1]:
|
|
temp[key[0]] += [{}] * (key[1] - len(temp[key[0]]) + 1)
|
|
temp = temp[key[0]][key[1]]
|
|
else:
|
|
if key not in temp or temp[key] is None:
|
|
temp[key] = {}
|
|
temp = temp[key]
|
|
|
|
last_key = key_path[-1]
|
|
if new_value == "":
|
|
if isinstance(last_key, tuple):
|
|
del temp[last_key[0]][last_key[1]]
|
|
else:
|
|
del temp[last_key]
|
|
else:
|
|
if isinstance(last_key, tuple):
|
|
if last_key[0] not in temp:
|
|
temp[last_key[0]] = [{}] * max(1, last_key[1] + 1)
|
|
elif len(temp[last_key[0]]) <= last_key[1]:
|
|
temp[last_key[0]] += [{}] * (last_key[1] - len(temp[last_key[0]]) + 1)
|
|
temp[last_key[0]][last_key[1]] = new_value
|
|
else:
|
|
if (
|
|
last_key in temp
|
|
and isinstance(temp[last_key], dict)
|
|
and isinstance(new_value, dict)
|
|
):
|
|
temp[last_key].update(new_value)
|
|
else:
|
|
temp[last_key] = new_value
|
|
|
|
return data
|
|
|
|
|
|
def find_by_key(dictionary, target_key):
|
|
if target_key in dictionary:
|
|
return dictionary[target_key]
|
|
else:
|
|
for value in dictionary.values():
|
|
if isinstance(value, dict):
|
|
result = find_by_key(value, target_key)
|
|
if result is not None:
|
|
return result
|
|
return None
|
|
|
|
|
|
def save_default_config(location: str) -> None:
|
|
try:
|
|
with open(location, "w") as f:
|
|
f.write(
|
|
"""
|
|
mqtt:
|
|
enabled: False
|
|
|
|
cameras:
|
|
name_of_your_camera: # <------ Name the camera
|
|
enabled: True
|
|
ffmpeg:
|
|
inputs:
|
|
- path: rtsp://10.0.10.10:554/rtsp # <----- The stream you want to use for detection
|
|
roles:
|
|
- detect
|
|
detect:
|
|
enabled: False # <---- disable detection until you have a working camera feed
|
|
width: 1280
|
|
height: 720
|
|
"""
|
|
)
|
|
except PermissionError:
|
|
logger.error("Unable to write default config to /config")
|
|
return
|
|
|
|
logger.info(
|
|
"Created default config file, see the getting started docs for configuration https://docs.frigate.video/guides/getting_started"
|
|
)
|
|
|
|
|
|
def get_tomorrow_at_time(hour: int) -> datetime.datetime:
|
|
"""Returns the datetime of the following day at 2am."""
|
|
try:
|
|
tomorrow = datetime.datetime.now(get_localzone()) + datetime.timedelta(days=1)
|
|
except ZoneInfoNotFoundError:
|
|
tomorrow = datetime.datetime.now(datetime.timezone.utc) + datetime.timedelta(
|
|
days=1
|
|
)
|
|
logger.warning(
|
|
"Using utc for maintenance due to missing or incorrect timezone set"
|
|
)
|
|
|
|
return tomorrow.replace(hour=hour, minute=0, second=0).astimezone(
|
|
datetime.timezone.utc
|
|
)
|
|
|
|
|
|
def clear_and_unlink(file: Path, missing_ok: bool = True) -> None:
|
|
"""clear file then unlink to avoid space retained by file descriptors."""
|
|
if not missing_ok and not file.exists():
|
|
raise FileNotFoundError()
|
|
|
|
# empty contents of file before unlinking https://github.com/blakeblackshear/frigate/issues/4769
|
|
with open(file, "w"):
|
|
pass
|
|
|
|
file.unlink(missing_ok=missing_ok)
|
|
|
|
|
|
def empty_and_close_queue(q: mp.Queue):
|
|
while True:
|
|
try:
|
|
q.get(block=True, timeout=0.5)
|
|
except queue.Empty:
|
|
q.close()
|
|
q.join_thread()
|
|
return
|
|
|
|
|
|
def generate_color_palette(n):
|
|
# mimic matplotlib's color scheme
|
|
base_colors = [
|
|
(31, 119, 180), # blue
|
|
(255, 127, 14), # orange
|
|
(44, 160, 44), # green
|
|
(214, 39, 40), # red
|
|
(148, 103, 189), # purple
|
|
(140, 86, 75), # brown
|
|
(227, 119, 194), # pink
|
|
(127, 127, 127), # gray
|
|
(188, 189, 34), # olive
|
|
(23, 190, 207), # cyan
|
|
]
|
|
|
|
def interpolate(color1, color2, factor):
|
|
return tuple(int(c1 + (c2 - c1) * factor) for c1, c2 in zip(color1, color2))
|
|
|
|
if n <= len(base_colors):
|
|
return base_colors[:n]
|
|
|
|
colors = base_colors.copy()
|
|
step = 1 / (n - len(base_colors) + 1)
|
|
extra_colors_needed = n - len(base_colors)
|
|
|
|
# interpolate between the base colors to generate more if needed
|
|
for i in range(extra_colors_needed):
|
|
index = i % (len(base_colors) - 1)
|
|
factor = (i + 1) * step
|
|
color1 = base_colors[index]
|
|
color2 = base_colors[index + 1]
|
|
colors.append(interpolate(color1, color2, factor))
|
|
|
|
return colors
|