3 """Utilities for dealing with webcam images."""
8 from typing import NamedTuple, Optional
11 import cv2 # type: ignore
15 import decorator_utils
18 logger = logging.getLogger(__name__)
21 class RawJpgHsv(NamedTuple):
22 """Raw image bytes, the jpeg image and the HSV (hue saturation value) image."""
24 jpg: Optional[np.ndarray]
25 hsv: Optional[np.ndarray]
28 class SanityCheckImageMetadata(NamedTuple):
29 """Is a Blue Iris image bad (big grey borders around it) or infrared?"""
31 is_infrared_image: bool
34 def sanity_check_image(hsv: np.ndarray) -> SanityCheckImageMetadata:
35 """See if a Blue Iris image is bad and infrared."""
36 def is_near(a, b) -> bool:
39 rows, cols, _ = hsv.shape
40 num_pixels = rows * cols
41 weird_orange_count = 0
47 is_near(pixel[0], 16) and
48 is_near(pixel[1], 117) and
49 is_near(pixel[2], 196)
51 weird_orange_count += 1
52 elif (is_near(pixel[0], 0) and is_near(pixel[1], 0)):
54 logger.debug(f"hszero#={hs_zero_count}, weird_orange={weird_orange_count}")
55 return SanityCheckImageMetadata(
56 hs_zero_count > (num_pixels * 0.75), weird_orange_count > (num_pixels * 0.75)
60 @decorator_utils.retry_if_none(tries=2, delay_sec=1, backoff=1.1)
61 def fetch_camera_image_from_video_server(
62 camera_name: str, *, width: int = 256, quality: int = 70
64 """Fetch the raw webcam image from the video server."""
65 camera_name = camera_name.replace(".house", "")
66 camera_name = camera_name.replace(".cabin", "")
67 url = f"http://10.0.0.226:8080/Umtxxf1uKMBniFblqeQ9KRbb6DDzN4/jpeg/GKlT2FfiSQ/{camera_name}/s.jpg"
69 response = requests.get(url, stream=False, timeout=10.0)
71 raw = response.content
72 logger.debug(f'Read {len(response.content)} byte image from HTTP server')
73 tmp = np.frombuffer(raw, dtype="uint8")
74 logger.debug(f'Translated raw content into {tmp.shape} {type(tmp)} with element type {type(tmp[0])}.')
75 jpg = cv2.imdecode(tmp, cv2.IMREAD_COLOR)
76 logger.debug(f'Decoded into {jpg.shape} jpeg {type(jpg)} with element type {type(jpg[0][0])}')
77 hsv = cv2.cvtColor(jpg, cv2.COLOR_BGR2HSV)
78 logger.debug(f'Converted JPG into HSV {hsv.shape} HSV {type(hsv)} with element type {type(hsv[0][0])}')
79 (_, is_bad_image) = sanity_check_image(hsv)
81 logger.debug(f"Got a good image from {url}")
83 except Exception as e:
85 msg = f"Got a bad image or HTTP error from {url}; returning None."
91 def blue_iris_camera_name_to_hostname(camera_name: str) -> str:
93 "driveway": "driveway.house",
94 "backyard": "backyard.house",
95 "frontdoor": "frontdoor.house",
96 "cabin_driveway": "driveway.cabin",
98 camera_name = mapping.get(camera_name, camera_name)
99 if "." not in camera_name:
100 hostname = platform.node()
101 suffix = hostname.split(".")[-1]
102 camera_name += f".{suffix}"
106 @decorator_utils.retry_if_none(tries=2, delay_sec=1, backoff=1.1)
107 def fetch_camera_image_from_rtsp_stream(
108 camera_name: str, *, width: int = 256
109 ) -> Optional[bytes]:
110 """Fetch the raw webcam image straight from the webcam's RTSP stream."""
111 hostname = blue_iris_camera_name_to_hostname(camera_name)
112 stream = f"rtsp://camera:IaLaIok@{hostname}:554/live"
118 "/usr/local/bin/ffmpeg",
130 with subprocess.Popen(
131 cmd, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL
133 out, _ = proc.communicate(timeout=10)
135 except Exception as e:
137 msg = "Failed to retrieve image via RTSP {stream}, returning None."
143 @decorator_utils.timeout(seconds=30, use_signals=False)
144 def _fetch_camera_image(
145 camera_name: str, *, width: int = 256, quality: int = 70
147 """Fetch a webcam image given the camera name."""
148 logger.debug("Trying to fetch camera image from video server")
149 raw = fetch_camera_image_from_video_server(
150 camera_name, width=width, quality=quality
154 "Reading from video server failed; trying direct RTSP stream"
156 raw = fetch_camera_image_from_rtsp_stream(camera_name, width=width)
157 if raw is not None and len(raw) > 0:
158 tmp = np.frombuffer(raw, dtype="uint8")
159 jpg = cv2.imdecode(tmp, cv2.IMREAD_COLOR)
160 hsv = cv2.cvtColor(jpg, cv2.COLOR_BGR2HSV)
166 msg = "Failed to retieve image from both video server and direct RTSP stream"
169 return RawJpgHsv(None, None, None)
172 def fetch_camera_image(
173 camera_name: str, *, width: int = 256, quality: int = 70
176 return _fetch_camera_image(camera_name, width=width, quality=quality)
177 except exceptions.TimeoutError:
178 return RawJpgHsv(None, None, None)