3 """Utilities for dealing with webcam images."""
9 from dataclasses import dataclass
10 from typing import Optional
12 import cv2 # type: ignore
16 import decorator_utils
20 logger = logging.getLogger(__name__)
25 """Raw image bytes, the jpeg image and the HSV (hue saturation value) image."""
27 raw: Optional[bytes] = None
28 jpg: Optional[np.ndarray] = None
29 hsv: Optional[np.ndarray] = None
33 class SanityCheckImageMetadata:
34 """Is a Blue Iris image bad (big grey borders around it) or infrared?"""
36 is_infrared_image: bool = False
37 is_bad_image: bool = False
40 def sanity_check_image(hsv: np.ndarray) -> SanityCheckImageMetadata:
41 """See if a Blue Iris or Shinobi image is bad and infrared."""
43 def is_near(a, b) -> bool:
46 rows, cols, _ = hsv.shape
47 num_pixels = rows * cols
48 weird_orange_count = 0
53 if is_near(pixel[0], 16) and is_near(pixel[1], 117) and is_near(pixel[2], 196):
54 weird_orange_count += 1
55 elif is_near(pixel[0], 0) and is_near(pixel[1], 0):
57 logger.debug("hszero#=%d, weird_orange=%d", hs_zero_count, weird_orange_count)
58 return SanityCheckImageMetadata(
59 hs_zero_count > (num_pixels * 0.75),
60 weird_orange_count > (num_pixels * 0.75),
64 @decorator_utils.retry_if_none(tries=2, delay_sec=1, backoff=1.1)
65 def fetch_camera_image_from_video_server(
66 camera_name: str, *, width: int = 256, quality: int = 70
68 """Fetch the raw webcam image from the video server."""
69 camera_name = camera_name.replace(".house", "")
70 camera_name = camera_name.replace(".cabin", "")
71 url = f"http://10.0.0.226:8080/{scott_secrets.SHINOBI_KEY1}/jpeg/{scott_secrets.SHINOBI_KEY2}/{camera_name}/s.jpg"
72 logger.debug('Fetching image from %s', url)
74 response = requests.get(url, stream=False, timeout=10.0)
76 raw = response.content
77 logger.debug('Read %d byte image from HTTP server', len(response.content))
78 tmp = np.frombuffer(raw, dtype="uint8")
80 'Translated raw content into %s %s with element type %s',
85 jpg = cv2.imdecode(tmp, cv2.IMREAD_COLOR)
87 'Decoded into %s jpeg %s with element type %s',
92 hsv = cv2.cvtColor(jpg, cv2.COLOR_BGR2HSV)
94 'Converted JPG into %s HSV HSV %s with element type %s',
99 ret = sanity_check_image(hsv)
100 if not ret.is_bad_image:
102 except Exception as e:
104 msg = f"Got a bad image or HTTP error from {url}; returning None."
106 warnings.warn(msg, stacklevel=2)
110 def camera_name_to_hostname(camera_name: str) -> str:
111 """Map a camera name to a hostname
113 >>> camera_name_to_hostname('driveway')
116 >>> camera_name_to_hostname('cabin_driveway')
121 "driveway": "driveway.house",
122 "backyard": "backyard.house",
123 "frontdoor": "frontdoor.house",
124 "cabin_driveway": "driveway.cabin",
126 camera_name = mapping.get(camera_name, camera_name)
127 if "." not in camera_name:
128 hostname = platform.node()
129 suffix = hostname.split(".")[-1]
130 camera_name += f".{suffix}"
134 @decorator_utils.retry_if_none(tries=2, delay_sec=1, backoff=1.1)
135 def fetch_camera_image_from_rtsp_stream(camera_name: str, *, width: int = 256) -> Optional[bytes]:
136 """Fetch the raw webcam image straight from the webcam's RTSP stream."""
137 hostname = camera_name_to_hostname(camera_name)
138 stream = f"rtsp://camera:{scott_secrets.CAMERA_PASSWORD}@{hostname}:554/live"
139 logger.debug('Fetching image from RTSP stream %s', stream)
145 "/usr/local/bin/ffmpeg",
157 with subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL) as proc:
158 out, _ = proc.communicate(timeout=10)
160 except Exception as e:
162 msg = f"Failed to retrieve image via RTSP {stream}, returning None."
164 warnings.warn(msg, stacklevel=2)
168 @decorator_utils.timeout(seconds=30, use_signals=False)
169 def _fetch_camera_image(camera_name: str, *, width: int = 256, quality: int = 70) -> RawJpgHsv:
170 """Fetch a webcam image given the camera name."""
171 logger.debug("Trying to fetch camera image from video server")
172 raw = fetch_camera_image_from_video_server(camera_name, width=width, quality=quality)
174 logger.debug("Reading from video server failed; trying direct RTSP stream")
175 raw = fetch_camera_image_from_rtsp_stream(camera_name, width=width)
176 if raw is not None and len(raw) > 0:
177 tmp = np.frombuffer(raw, dtype="uint8")
178 jpg = cv2.imdecode(tmp, cv2.IMREAD_COLOR)
179 hsv = cv2.cvtColor(jpg, cv2.COLOR_BGR2HSV)
185 msg = "Failed to retieve image from both video server and direct RTSP stream"
187 warnings.warn(msg, stacklevel=2)
188 return RawJpgHsv(None, None, None)
191 def fetch_camera_image(camera_name: str, *, width: int = 256, quality: int = 70) -> RawJpgHsv:
193 return _fetch_camera_image(camera_name, width=width, quality=quality)
194 except exceptions.TimeoutError:
195 logger.warning('Fetching camera image operation timed out.')
196 return RawJpgHsv(None, None, None)
199 if __name__ == '__main__':