mirror of
https://github.com/blakeblackshear/frigate.git
synced 2024-10-15 20:07:23 +02:00
1559 lines
49 KiB
Python
1559 lines
49 KiB
Python
"""Image and video apis."""
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import base64
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import glob
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import logging
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import os
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import subprocess as sp
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import time
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from datetime import datetime, timedelta, timezone
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from urllib.parse import unquote
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import cv2
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import numpy as np
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import pytz
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from fastapi import APIRouter, Path, Query, Request, Response
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from fastapi.params import Depends
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from fastapi.responses import FileResponse, JSONResponse
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from pathvalidate import sanitize_filename
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from peewee import DoesNotExist, fn
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from tzlocal import get_localzone_name
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from frigate.api.defs.media_query_parameters import (
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Extension,
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MediaEventsSnapshotQueryParams,
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MediaLatestFrameQueryParams,
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MediaMjpegFeedQueryParams,
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)
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from frigate.api.defs.tags import Tags
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from frigate.config import FrigateConfig
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from frigate.const import (
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CACHE_DIR,
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CLIPS_DIR,
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MAX_SEGMENT_DURATION,
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PREVIEW_FRAME_TYPE,
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RECORD_DIR,
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)
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from frigate.models import Event, Previews, Recordings, Regions, ReviewSegment
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from frigate.util.builtin import get_tz_modifiers
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from frigate.util.image import get_image_from_recording
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logger = logging.getLogger(__name__)
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router = APIRouter(tags=[Tags.media])
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@router.get("{camera_name}")
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def mjpeg_feed(
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request: Request,
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camera_name: str,
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params: MediaMjpegFeedQueryParams = Depends(),
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):
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draw_options = {
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"bounding_boxes": params.bbox,
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"timestamp": params.timestamp,
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"zones": params.zones,
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"mask": params.mask,
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"motion_boxes": params.motion,
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"regions": params.regions,
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}
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if camera_name in request.app.frigate_config.cameras:
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# return a multipart response
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return Response(
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imagestream(
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request.app.detected_frames_processor,
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camera_name,
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params.fps,
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params.height,
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draw_options,
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),
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media_type="multipart/x-mixed-replace;boundary=frame",
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)
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else:
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return JSONResponse(
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content={"success": False, "message": "Camera not found"},
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status_code=404,
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)
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def imagestream(
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detected_frames_processor, camera_name: str, fps: int, height: int, draw_options
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):
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while True:
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# max out at specified FPS
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time.sleep(1 / fps)
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frame = detected_frames_processor.get_current_frame(camera_name, draw_options)
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if frame is None:
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frame = np.zeros((height, int(height * 16 / 9), 3), np.uint8)
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width = int(height * frame.shape[1] / frame.shape[0])
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frame = cv2.resize(frame, dsize=(width, height), interpolation=cv2.INTER_LINEAR)
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ret, jpg = cv2.imencode(".jpg", frame, [int(cv2.IMWRITE_JPEG_QUALITY), 70])
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yield (
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b"--frame\r\n"
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b"Content-Type: image/jpeg\r\n\r\n" + bytearray(jpg.tobytes()) + b"\r\n\r\n"
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)
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@router.get("/{camera_name}/ptz/info")
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def camera_ptz_info(request: Request, camera_name: str):
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if camera_name in request.app.frigate_config.cameras:
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return JSONResponse(
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content=request.app.onvif.get_camera_info(camera_name),
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)
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else:
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return JSONResponse(
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content={"success": False, "message": "Camera not found"},
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status_code=404,
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)
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@router.get("/{camera_name}/latest.{extension}")
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def latest_frame(
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request: Request,
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camera_name: str,
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extension: Extension,
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params: MediaLatestFrameQueryParams = Depends(),
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):
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draw_options = {
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"bounding_boxes": params.bbox,
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"timestamp": params.timestamp,
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"zones": params.zones,
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"mask": params.mask,
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"motion_boxes": params.motion,
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"regions": params.regions,
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}
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quality = params.quality
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if camera_name in request.app.frigate_config.cameras:
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frame = request.app.detected_frames_processor.get_current_frame(
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camera_name, draw_options
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)
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retry_interval = float(
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request.app.frigate_config.cameras.get(camera_name).ffmpeg.retry_interval
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or 10
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)
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if frame is None or datetime.now().timestamp() > (
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request.app.detected_frames_processor.get_current_frame_time(camera_name)
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+ retry_interval
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):
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if request.app.camera_error_image is None:
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error_image = glob.glob("/opt/frigate/frigate/images/camera-error.jpg")
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if len(error_image) > 0:
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request.app.camera_error_image = cv2.imread(
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error_image[0], cv2.IMREAD_UNCHANGED
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)
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frame = request.app.camera_error_image
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height = int(params.height or str(frame.shape[0]))
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width = int(height * frame.shape[1] / frame.shape[0])
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if frame is None:
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return JSONResponse(
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content={"success": False, "message": "Unable to get valid frame"},
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status_code=500,
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)
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if height < 1 or width < 1:
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return JSONResponse(
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content="Invalid height / width requested :: {} / {}".format(
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height, width
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),
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status_code=400,
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)
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frame = cv2.resize(frame, dsize=(width, height), interpolation=cv2.INTER_AREA)
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ret, img = cv2.imencode(
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f".{extension}", frame, [int(cv2.IMWRITE_WEBP_QUALITY), quality]
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)
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return Response(
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content=img.tobytes(),
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media_type=f"image/{extension}",
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headers={"Content-Type": f"image/{extension}", "Cache-Control": "no-store"},
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)
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elif camera_name == "birdseye" and request.app.frigate_config.birdseye.restream:
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frame = cv2.cvtColor(
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request.app.detected_frames_processor.get_current_frame(camera_name),
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cv2.COLOR_YUV2BGR_I420,
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)
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height = int(params.height or str(frame.shape[0]))
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width = int(height * frame.shape[1] / frame.shape[0])
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frame = cv2.resize(frame, dsize=(width, height), interpolation=cv2.INTER_AREA)
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ret, img = cv2.imencode(
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f".{extension}", frame, [int(cv2.IMWRITE_WEBP_QUALITY), quality]
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)
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return Response(
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content=img.tobytes(),
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media_type=f"image/{extension}",
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headers={"Content-Type": f"image/{extension}", "Cache-Control": "no-store"},
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)
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else:
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return JSONResponse(
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content={"success": False, "message": "Camera not found"},
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status_code=404,
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)
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@router.get("/{camera_name}/recordings/{frame_time}/snapshot.{format}")
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def get_snapshot_from_recording(
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request: Request,
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camera_name: str,
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frame_time: float,
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format: str = Path(enum=["png", "jpg"]),
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height: int = None,
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):
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if camera_name not in request.app.frigate_config.cameras:
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return JSONResponse(
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content={"success": False, "message": "Camera not found"},
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status_code=404,
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)
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recording_query = (
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Recordings.select(
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Recordings.path,
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Recordings.start_time,
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)
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.where(
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(
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(frame_time >= Recordings.start_time)
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& (frame_time <= Recordings.end_time)
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)
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)
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.where(Recordings.camera == camera_name)
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.order_by(Recordings.start_time.desc())
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.limit(1)
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)
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try:
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recording: Recordings = recording_query.get()
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time_in_segment = frame_time - recording.start_time
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codec = "png" if format == "png" else "mjpeg"
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config: FrigateConfig = request.app.frigate_config
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image_data = get_image_from_recording(
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config.ffmpeg, recording.path, time_in_segment, codec, height
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)
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if not image_data:
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return JSONResponse(
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content=(
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{
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"success": False,
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"message": f"Unable to parse frame at time {frame_time}",
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}
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),
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status_code=404,
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)
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return Response(image_data, headers={"Content-Type": f"image/{format}"})
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except DoesNotExist:
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return JSONResponse(
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content={
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"success": False,
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"message": "Recording not found at {}".format(frame_time),
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},
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status_code=404,
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)
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@router.post("/{camera_name}/plus/{frame_time}")
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def submit_recording_snapshot_to_plus(
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request: Request, camera_name: str, frame_time: str
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):
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if camera_name not in request.app.frigate_config.cameras:
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return JSONResponse(
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content={"success": False, "message": "Camera not found"},
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status_code=404,
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)
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frame_time = float(frame_time)
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recording_query = (
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Recordings.select(
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Recordings.path,
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Recordings.start_time,
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)
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.where(
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(
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(frame_time >= Recordings.start_time)
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& (frame_time <= Recordings.end_time)
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)
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)
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.where(Recordings.camera == camera_name)
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.order_by(Recordings.start_time.desc())
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.limit(1)
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)
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try:
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config: FrigateConfig = request.app.frigate_config
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recording: Recordings = recording_query.get()
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time_in_segment = frame_time - recording.start_time
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image_data = get_image_from_recording(
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config.ffmpeg, recording.path, time_in_segment, "png"
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)
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if not image_data:
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return JSONResponse(
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content={
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"success": False,
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"message": f"Unable to parse frame at time {frame_time}",
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},
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status_code=404,
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)
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nd = cv2.imdecode(np.frombuffer(image_data, dtype=np.int8), cv2.IMREAD_COLOR)
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request.app.frigate_config.plus_api.upload_image(nd, camera_name)
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return JSONResponse(
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content={
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"success": True,
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"message": "Successfully submitted image.",
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},
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status_code=200,
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)
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except DoesNotExist:
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return JSONResponse(
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content={
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"success": False,
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"message": "Recording not found at {}".format(frame_time),
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},
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status_code=404,
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)
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@router.get("/recordings/storage")
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def get_recordings_storage_usage(request: Request):
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recording_stats = request.app.stats_emitter.get_latest_stats()["service"][
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"storage"
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][RECORD_DIR]
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if not recording_stats:
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return JSONResponse({})
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total_mb = recording_stats["total"]
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camera_usages: dict[str, dict] = (
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request.app.storage_maintainer.calculate_camera_usages()
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)
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for camera_name in camera_usages.keys():
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if camera_usages.get(camera_name, {}).get("usage"):
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camera_usages[camera_name]["usage_percent"] = (
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camera_usages.get(camera_name, {}).get("usage", 0) / total_mb
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) * 100
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return JSONResponse(content=camera_usages)
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@router.get("/{camera_name}/recordings/summary")
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def recordings_summary(camera_name: str, timezone: str = "utc"):
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"""Returns hourly summary for recordings of given camera"""
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hour_modifier, minute_modifier, seconds_offset = get_tz_modifiers(timezone)
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recording_groups = (
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Recordings.select(
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fn.strftime(
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"%Y-%m-%d %H",
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fn.datetime(
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Recordings.start_time, "unixepoch", hour_modifier, minute_modifier
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),
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).alias("hour"),
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fn.SUM(Recordings.duration).alias("duration"),
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fn.SUM(Recordings.motion).alias("motion"),
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fn.SUM(Recordings.objects).alias("objects"),
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)
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.where(Recordings.camera == camera_name)
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.group_by((Recordings.start_time + seconds_offset).cast("int") / 3600)
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.order_by(Recordings.start_time.desc())
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.namedtuples()
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)
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event_groups = (
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Event.select(
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fn.strftime(
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"%Y-%m-%d %H",
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fn.datetime(
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Event.start_time, "unixepoch", hour_modifier, minute_modifier
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),
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).alias("hour"),
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fn.COUNT(Event.id).alias("count"),
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)
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.where(Event.camera == camera_name, Event.has_clip)
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.group_by((Event.start_time + seconds_offset).cast("int") / 3600)
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.namedtuples()
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)
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event_map = {g.hour: g.count for g in event_groups}
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days = {}
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for recording_group in recording_groups:
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parts = recording_group.hour.split()
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hour = parts[1]
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day = parts[0]
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events_count = event_map.get(recording_group.hour, 0)
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hour_data = {
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"hour": hour,
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"events": events_count,
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"motion": recording_group.motion,
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"objects": recording_group.objects,
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"duration": round(recording_group.duration),
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}
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if day not in days:
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days[day] = {"events": events_count, "hours": [hour_data], "day": day}
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else:
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days[day]["events"] += events_count
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days[day]["hours"].append(hour_data)
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return JSONResponse(content=list(days.values()))
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|
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@router.get("/{camera_name}/recordings")
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def recordings(
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camera_name: str,
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after: float = (datetime.now() - timedelta(hours=1)).timestamp(),
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before: float = datetime.now().timestamp(),
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):
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"""Return specific camera recordings between the given 'after'/'end' times. If not provided the last hour will be used"""
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recordings = (
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Recordings.select(
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Recordings.id,
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Recordings.start_time,
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Recordings.end_time,
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Recordings.segment_size,
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Recordings.motion,
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Recordings.objects,
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Recordings.duration,
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)
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.where(
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Recordings.camera == camera_name,
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Recordings.end_time >= after,
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Recordings.start_time <= before,
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)
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.order_by(Recordings.start_time)
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.dicts()
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.iterator()
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)
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return JSONResponse(content=list(recordings))
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|
|
|
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@router.get("/{camera_name}/start/{start_ts}/end/{end_ts}/clip.mp4")
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def recording_clip(
|
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request: Request,
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camera_name: str,
|
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start_ts: float,
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end_ts: float,
|
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download: bool = False,
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):
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recordings = (
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Recordings.select(
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Recordings.path,
|
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Recordings.start_time,
|
|
Recordings.end_time,
|
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)
|
|
.where(
|
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(Recordings.start_time.between(start_ts, end_ts))
|
|
| (Recordings.end_time.between(start_ts, end_ts))
|
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| ((start_ts > Recordings.start_time) & (end_ts < Recordings.end_time))
|
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)
|
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.where(Recordings.camera == camera_name)
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.order_by(Recordings.start_time.asc())
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)
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playlist_lines = []
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clip: Recordings
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for clip in recordings:
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playlist_lines.append(f"file '{clip.path}'")
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# if this is the starting clip, add an inpoint
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if clip.start_time < start_ts:
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playlist_lines.append(f"inpoint {int(start_ts - clip.start_time)}")
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# if this is the ending clip, add an outpoint
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if clip.end_time > end_ts:
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playlist_lines.append(f"outpoint {int(end_ts - clip.start_time)}")
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|
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file_name = sanitize_filename(f"clip_{camera_name}_{start_ts}-{end_ts}.mp4")
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|
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if len(file_name) > 1000:
|
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return JSONResponse(
|
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content={
|
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"success": False,
|
|
"message": "Filename exceeded max length of 1000",
|
|
},
|
|
status_code=403,
|
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)
|
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|
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path = os.path.join(CLIPS_DIR, f"cache/{file_name}")
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|
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config: FrigateConfig = request.app.frigate_config
|
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|
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if not os.path.exists(path):
|
|
ffmpeg_cmd = [
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config.ffmpeg.ffmpeg_path,
|
|
"-hide_banner",
|
|
"-y",
|
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"-protocol_whitelist",
|
|
"pipe,file",
|
|
"-f",
|
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"concat",
|
|
"-safe",
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|
"0",
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|
"-i",
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"/dev/stdin",
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"-c",
|
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"copy",
|
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"-movflags",
|
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"+faststart",
|
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path,
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]
|
|
p = sp.run(
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ffmpeg_cmd,
|
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input="\n".join(playlist_lines),
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encoding="ascii",
|
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capture_output=True,
|
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)
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|
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if p.returncode != 0:
|
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logger.error(p.stderr)
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return JSONResponse(
|
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content={
|
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"success": False,
|
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"message": "Could not create clip from recordings",
|
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},
|
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status_code=500,
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)
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else:
|
|
logger.debug(
|
|
f"Ignoring subsequent request for {path} as it already exists in the cache."
|
|
)
|
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|
|
headers = {
|
|
"Content-Description": "File Transfer",
|
|
"Cache-Control": "no-cache",
|
|
"Content-Type": "video/mp4",
|
|
"Content-Length": str(os.path.getsize(path)),
|
|
# nginx: https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_ignore_headers
|
|
"X-Accel-Redirect": f"/clips/cache/{file_name}",
|
|
}
|
|
|
|
if download:
|
|
headers["Content-Disposition"] = "attachment; filename=%s" % file_name
|
|
|
|
return FileResponse(
|
|
path,
|
|
media_type="video/mp4",
|
|
filename=file_name,
|
|
headers=headers,
|
|
)
|
|
|
|
|
|
@router.get("/vod/{camera_name}/start/{start_ts}/end/{end_ts}")
|
|
def vod_ts(camera_name: str, start_ts: float, end_ts: float):
|
|
recordings = (
|
|
Recordings.select(Recordings.path, Recordings.duration, Recordings.end_time)
|
|
.where(
|
|
Recordings.start_time.between(start_ts, end_ts)
|
|
| Recordings.end_time.between(start_ts, end_ts)
|
|
| ((start_ts > Recordings.start_time) & (end_ts < Recordings.end_time))
|
|
)
|
|
.where(Recordings.camera == camera_name)
|
|
.order_by(Recordings.start_time.asc())
|
|
.iterator()
|
|
)
|
|
|
|
clips = []
|
|
durations = []
|
|
max_duration_ms = MAX_SEGMENT_DURATION * 1000
|
|
|
|
recording: Recordings
|
|
for recording in recordings:
|
|
clip = {"type": "source", "path": recording.path}
|
|
duration = int(recording.duration * 1000)
|
|
|
|
# Determine if we need to end the last clip early
|
|
if recording.end_time > end_ts:
|
|
duration -= int((recording.end_time - end_ts) * 1000)
|
|
|
|
if duration == 0:
|
|
# this means the segment starts right at the end of the requested time range
|
|
# and it does not need to be included
|
|
continue
|
|
|
|
if 0 < duration < max_duration_ms:
|
|
clip["keyFrameDurations"] = [duration]
|
|
clips.append(clip)
|
|
durations.append(duration)
|
|
else:
|
|
logger.warning(f"Recording clip is missing or empty: {recording.path}")
|
|
|
|
if not clips:
|
|
logger.error(
|
|
f"No recordings found for {camera_name} during the requested time range"
|
|
)
|
|
return JSONResponse(
|
|
content={
|
|
"success": False,
|
|
"message": "No recordings found.",
|
|
},
|
|
status_code=404,
|
|
)
|
|
|
|
hour_ago = datetime.now() - timedelta(hours=1)
|
|
return JSONResponse(
|
|
content={
|
|
"cache": hour_ago.timestamp() > start_ts,
|
|
"discontinuity": False,
|
|
"consistentSequenceMediaInfo": True,
|
|
"durations": durations,
|
|
"segment_duration": max(durations),
|
|
"sequences": [{"clips": clips}],
|
|
}
|
|
)
|
|
|
|
|
|
@router.get("/vod/{year_month}/{day}/{hour}/{camera_name}")
|
|
def vod_hour_no_timezone(year_month: str, day: int, hour: int, camera_name: str):
|
|
"""VOD for specific hour. Uses the default timezone (UTC)."""
|
|
return vod_hour(
|
|
year_month, day, hour, camera_name, get_localzone_name().replace("/", ",")
|
|
)
|
|
|
|
|
|
@router.get("/vod/{year_month}/{day}/{hour}/{camera_name}/{tz_name}")
|
|
def vod_hour(year_month: str, day: int, hour: int, camera_name: str, tz_name: str):
|
|
parts = year_month.split("-")
|
|
start_date = (
|
|
datetime(int(parts[0]), int(parts[1]), day, hour, tzinfo=timezone.utc)
|
|
- datetime.now(pytz.timezone(tz_name.replace(",", "/"))).utcoffset()
|
|
)
|
|
end_date = start_date + timedelta(hours=1) - timedelta(milliseconds=1)
|
|
start_ts = start_date.timestamp()
|
|
end_ts = end_date.timestamp()
|
|
|
|
return vod_ts(camera_name, start_ts, end_ts)
|
|
|
|
|
|
@router.get("/vod/event/{event_id}")
|
|
def vod_event(event_id: str):
|
|
try:
|
|
event: Event = Event.get(Event.id == event_id)
|
|
except DoesNotExist:
|
|
logger.error(f"Event not found: {event_id}")
|
|
return JSONResponse(
|
|
content={
|
|
"success": False,
|
|
"message": "Event not found.",
|
|
},
|
|
status_code=404,
|
|
)
|
|
|
|
if not event.has_clip:
|
|
logger.error(f"Event does not have recordings: {event_id}")
|
|
return JSONResponse(
|
|
content={
|
|
"success": False,
|
|
"message": "Recordings not available.",
|
|
},
|
|
status_code=404,
|
|
)
|
|
|
|
clip_path = os.path.join(CLIPS_DIR, f"{event.camera}-{event.id}.mp4")
|
|
|
|
if not os.path.isfile(clip_path):
|
|
end_ts = (
|
|
datetime.now().timestamp() if event.end_time is None else event.end_time
|
|
)
|
|
vod_response = vod_ts(event.camera, event.start_time, end_ts)
|
|
# If the recordings are not found and the event started more than 5 minutes ago, set has_clip to false
|
|
if (
|
|
event.start_time < datetime.now().timestamp() - 300
|
|
and type(vod_response) is tuple
|
|
and len(vod_response) == 2
|
|
and vod_response[1] == 404
|
|
):
|
|
Event.update(has_clip=False).where(Event.id == event_id).execute()
|
|
return vod_response
|
|
|
|
duration = int((event.end_time - event.start_time) * 1000)
|
|
return JSONResponse(
|
|
content={
|
|
"cache": True,
|
|
"discontinuity": False,
|
|
"durations": [duration],
|
|
"sequences": [{"clips": [{"type": "source", "path": clip_path}]}],
|
|
}
|
|
)
|
|
|
|
|
|
@router.get("/events/{event_id}/snapshot.jpg")
|
|
def event_snapshot(
|
|
request: Request,
|
|
event_id: str,
|
|
params: MediaEventsSnapshotQueryParams = Depends(),
|
|
):
|
|
event_complete = False
|
|
jpg_bytes = None
|
|
try:
|
|
event = Event.get(Event.id == event_id, Event.end_time != None)
|
|
event_complete = True
|
|
if not event.has_snapshot:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Snapshot not available"},
|
|
status_code=404,
|
|
)
|
|
# read snapshot from disk
|
|
with open(
|
|
os.path.join(CLIPS_DIR, f"{event.camera}-{event.id}.jpg"), "rb"
|
|
) as image_file:
|
|
jpg_bytes = image_file.read()
|
|
except DoesNotExist:
|
|
# see if the object is currently being tracked
|
|
try:
|
|
camera_states = request.app.detected_frames_processor.camera_states.values()
|
|
for camera_state in camera_states:
|
|
if event_id in camera_state.tracked_objects:
|
|
tracked_obj = camera_state.tracked_objects.get(event_id)
|
|
if tracked_obj is not None:
|
|
jpg_bytes = tracked_obj.get_jpg_bytes(
|
|
timestamp=params.timestamp,
|
|
bounding_box=params.bbox,
|
|
crop=params.crop,
|
|
height=params.height,
|
|
quality=params.quality,
|
|
)
|
|
except Exception:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Event not found"},
|
|
status_code=404,
|
|
)
|
|
except Exception:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Event not found"}, status_code=404
|
|
)
|
|
|
|
if jpg_bytes is None:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Event not found"}, status_code=404
|
|
)
|
|
|
|
headers = {
|
|
"Content-Type": "image/jpeg",
|
|
"Cache-Control": "private, max-age=31536000" if event_complete else "no-store",
|
|
}
|
|
|
|
if params.download:
|
|
headers["Content-Disposition"] = f"attachment; filename=snapshot-{event_id}.jpg"
|
|
|
|
return Response(
|
|
jpg_bytes,
|
|
media_type="image/jpeg",
|
|
headers=headers,
|
|
)
|
|
|
|
|
|
@router.get("/events/{event_id}/thumbnail.jpg")
|
|
def event_thumbnail(
|
|
request: Request,
|
|
event_id: str,
|
|
max_cache_age: int = Query(
|
|
2592000, description="Max cache age in seconds. Default 30 days in seconds."
|
|
),
|
|
format: str = Query(default="ios", enum=["ios", "android"]),
|
|
):
|
|
thumbnail_bytes = None
|
|
event_complete = False
|
|
try:
|
|
event = Event.get(Event.id == event_id)
|
|
if event.end_time is not None:
|
|
event_complete = True
|
|
thumbnail_bytes = base64.b64decode(event.thumbnail)
|
|
except DoesNotExist:
|
|
# see if the object is currently being tracked
|
|
try:
|
|
camera_states = request.app.detected_frames_processor.camera_states.values()
|
|
for camera_state in camera_states:
|
|
if event_id in camera_state.tracked_objects:
|
|
tracked_obj = camera_state.tracked_objects.get(event_id)
|
|
if tracked_obj is not None:
|
|
thumbnail_bytes = tracked_obj.get_thumbnail()
|
|
except Exception:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Event not found"},
|
|
status_code=404,
|
|
)
|
|
|
|
if thumbnail_bytes is None:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Event not found"},
|
|
status_code=404,
|
|
)
|
|
|
|
# android notifications prefer a 2:1 ratio
|
|
if format == "android":
|
|
jpg_as_np = np.frombuffer(thumbnail_bytes, dtype=np.uint8)
|
|
img = cv2.imdecode(jpg_as_np, flags=1)
|
|
thumbnail = cv2.copyMakeBorder(
|
|
img,
|
|
0,
|
|
0,
|
|
int(img.shape[1] * 0.5),
|
|
int(img.shape[1] * 0.5),
|
|
cv2.BORDER_CONSTANT,
|
|
(0, 0, 0),
|
|
)
|
|
ret, jpg = cv2.imencode(".jpg", thumbnail, [int(cv2.IMWRITE_JPEG_QUALITY), 70])
|
|
thumbnail_bytes = jpg.tobytes()
|
|
|
|
return Response(
|
|
thumbnail_bytes,
|
|
media_type="image/jpeg",
|
|
headers={
|
|
"Cache-Control": f"private, max-age={max_cache_age}"
|
|
if event_complete
|
|
else "no-store",
|
|
"Content-Type": "image/jpeg",
|
|
},
|
|
)
|
|
|
|
|
|
@router.get("/{camera_name}/grid.jpg")
|
|
def grid_snapshot(
|
|
request: Request, camera_name: str, color: str = "green", font_scale: float = 0.5
|
|
):
|
|
if camera_name in request.app.frigate_config.cameras:
|
|
detect = request.app.frigate_config.cameras[camera_name].detect
|
|
frame = request.app.detected_frames_processor.get_current_frame(camera_name, {})
|
|
retry_interval = float(
|
|
request.app.frigate_config.cameras.get(camera_name).ffmpeg.retry_interval
|
|
or 10
|
|
)
|
|
|
|
if frame is None or datetime.now().timestamp() > (
|
|
request.app.detected_frames_processor.get_current_frame_time(camera_name)
|
|
+ retry_interval
|
|
):
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Unable to get valid frame"},
|
|
status_code=500,
|
|
)
|
|
|
|
try:
|
|
grid = (
|
|
Regions.select(Regions.grid)
|
|
.where(Regions.camera == camera_name)
|
|
.get()
|
|
.grid
|
|
)
|
|
except DoesNotExist:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Unable to get region grid"},
|
|
status_code=500,
|
|
)
|
|
|
|
color_arg = color.lower()
|
|
|
|
if color_arg == "red":
|
|
draw_color = (0, 0, 255)
|
|
elif color_arg == "blue":
|
|
draw_color = (255, 0, 0)
|
|
elif color_arg == "black":
|
|
draw_color = (0, 0, 0)
|
|
elif color_arg == "white":
|
|
draw_color = (255, 255, 255)
|
|
else:
|
|
draw_color = (0, 255, 0) # green
|
|
|
|
grid_size = len(grid)
|
|
grid_coef = 1.0 / grid_size
|
|
width = detect.width
|
|
height = detect.height
|
|
for x in range(grid_size):
|
|
for y in range(grid_size):
|
|
cell = grid[x][y]
|
|
|
|
if len(cell["sizes"]) == 0:
|
|
continue
|
|
|
|
std_dev = round(cell["std_dev"] * width, 2)
|
|
mean = round(cell["mean"] * width, 2)
|
|
cv2.rectangle(
|
|
frame,
|
|
(int(x * grid_coef * width), int(y * grid_coef * height)),
|
|
(
|
|
int((x + 1) * grid_coef * width),
|
|
int((y + 1) * grid_coef * height),
|
|
),
|
|
draw_color,
|
|
2,
|
|
)
|
|
cv2.putText(
|
|
frame,
|
|
f"#: {len(cell['sizes'])}",
|
|
(
|
|
int(x * grid_coef * width + 10),
|
|
int((y * grid_coef + 0.02) * height),
|
|
),
|
|
cv2.FONT_HERSHEY_SIMPLEX,
|
|
fontScale=font_scale,
|
|
color=draw_color,
|
|
thickness=2,
|
|
)
|
|
cv2.putText(
|
|
frame,
|
|
f"std: {std_dev}",
|
|
(
|
|
int(x * grid_coef * width + 10),
|
|
int((y * grid_coef + 0.05) * height),
|
|
),
|
|
cv2.FONT_HERSHEY_SIMPLEX,
|
|
fontScale=font_scale,
|
|
color=draw_color,
|
|
thickness=2,
|
|
)
|
|
cv2.putText(
|
|
frame,
|
|
f"avg: {mean}",
|
|
(
|
|
int(x * grid_coef * width + 10),
|
|
int((y * grid_coef + 0.08) * height),
|
|
),
|
|
cv2.FONT_HERSHEY_SIMPLEX,
|
|
fontScale=font_scale,
|
|
color=draw_color,
|
|
thickness=2,
|
|
)
|
|
|
|
ret, jpg = cv2.imencode(".jpg", frame, [int(cv2.IMWRITE_JPEG_QUALITY), 70])
|
|
|
|
return Response(
|
|
jpg.tobytes,
|
|
media_type="image/jpeg",
|
|
headers={"Cache-Control": "no-store"},
|
|
)
|
|
else:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Camera not found"},
|
|
status_code=404,
|
|
)
|
|
|
|
|
|
@router.get("/events/{event_id}/snapshot-clean.png")
|
|
def event_snapshot_clean(request: Request, event_id: str, download: bool = False):
|
|
png_bytes = None
|
|
try:
|
|
event = Event.get(Event.id == event_id)
|
|
snapshot_config = request.app.frigate_config.cameras[event.camera].snapshots
|
|
if not (snapshot_config.enabled and event.has_snapshot):
|
|
return JSONResponse(
|
|
content={
|
|
"success": False,
|
|
"message": "Snapshots and clean_copy must be enabled in the config",
|
|
},
|
|
status_code=404,
|
|
)
|
|
if event.end_time is None:
|
|
# see if the object is currently being tracked
|
|
try:
|
|
camera_states = (
|
|
request.app.detected_frames_processor.camera_states.values()
|
|
)
|
|
for camera_state in camera_states:
|
|
if event_id in camera_state.tracked_objects:
|
|
tracked_obj = camera_state.tracked_objects.get(event_id)
|
|
if tracked_obj is not None:
|
|
png_bytes = tracked_obj.get_clean_png()
|
|
break
|
|
except Exception:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Event not found"},
|
|
status_code=404,
|
|
)
|
|
elif not event.has_snapshot:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Snapshot not available"},
|
|
status_code=404,
|
|
)
|
|
except DoesNotExist:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Event not found"}, status_code=404
|
|
)
|
|
if png_bytes is None:
|
|
try:
|
|
clean_snapshot_path = os.path.join(
|
|
CLIPS_DIR, f"{event.camera}-{event.id}-clean.png"
|
|
)
|
|
if not os.path.exists(clean_snapshot_path):
|
|
return JSONResponse(
|
|
content={
|
|
"success": False,
|
|
"message": "Clean snapshot not available",
|
|
},
|
|
status_code=404,
|
|
)
|
|
with open(
|
|
os.path.join(CLIPS_DIR, f"{event.camera}-{event.id}-clean.png"), "rb"
|
|
) as image_file:
|
|
png_bytes = image_file.read()
|
|
except Exception:
|
|
logger.error(f"Unable to load clean png for event: {event.id}")
|
|
return JSONResponse(
|
|
content={
|
|
"success": False,
|
|
"message": "Unable to load clean png for event",
|
|
},
|
|
status_code=400,
|
|
)
|
|
|
|
headers = {
|
|
"Content-Type": "image/png",
|
|
"Cache-Control": "private, max-age=31536000",
|
|
}
|
|
|
|
if download:
|
|
headers["Content-Disposition"] = (
|
|
f"attachment; filename=snapshot-{event_id}-clean.png"
|
|
)
|
|
|
|
return Response(
|
|
png_bytes,
|
|
media_type="image/png",
|
|
headers=headers,
|
|
)
|
|
|
|
|
|
@router.get("/events/{event_id}/clip.mp4")
|
|
def event_clip(request: Request, event_id: str, download: bool = False):
|
|
try:
|
|
event: Event = Event.get(Event.id == event_id)
|
|
except DoesNotExist:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Event not found"}, status_code=404
|
|
)
|
|
|
|
if not event.has_clip:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Clip not available"}, status_code=404
|
|
)
|
|
|
|
file_name = f"{event.camera}-{event.id}.mp4"
|
|
clip_path = os.path.join(CLIPS_DIR, file_name)
|
|
|
|
if not os.path.isfile(clip_path):
|
|
end_ts = (
|
|
datetime.now().timestamp() if event.end_time is None else event.end_time
|
|
)
|
|
return recording_clip(request, event.camera, event.start_time, end_ts, download)
|
|
|
|
headers = {
|
|
"Content-Description": "File Transfer",
|
|
"Cache-Control": "no-cache",
|
|
"Content-Type": "video/mp4",
|
|
"Content-Length": str(os.path.getsize(clip_path)),
|
|
# nginx: https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_ignore_headers
|
|
"X-Accel-Redirect": f"/clips/{file_name}",
|
|
}
|
|
|
|
if download:
|
|
headers["Content-Disposition"] = "attachment; filename=%s" % file_name
|
|
|
|
return FileResponse(
|
|
clip_path,
|
|
media_type="video/mp4",
|
|
filename=file_name,
|
|
headers=headers,
|
|
)
|
|
|
|
|
|
@router.get("/events/{event_id}/preview.gif")
|
|
def event_preview(request: Request, event_id: str):
|
|
try:
|
|
event: Event = Event.get(Event.id == event_id)
|
|
except DoesNotExist:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Event not found"}, status_code=404
|
|
)
|
|
|
|
start_ts = event.start_time
|
|
end_ts = start_ts + (
|
|
min(event.end_time - event.start_time, 20) if event.end_time else 20
|
|
)
|
|
return preview_gif(request, event.camera, start_ts, end_ts)
|
|
|
|
|
|
@router.get("/{camera_name}/start/{start_ts}/end/{end_ts}/preview.gif")
|
|
def preview_gif(
|
|
request: Request,
|
|
camera_name: str,
|
|
start_ts: float,
|
|
end_ts: float,
|
|
max_cache_age: int = Query(
|
|
2592000, description="Max cache age in seconds. Default 30 days in seconds."
|
|
),
|
|
):
|
|
if datetime.fromtimestamp(start_ts) < datetime.now().replace(minute=0, second=0):
|
|
# has preview mp4
|
|
preview: Previews = (
|
|
Previews.select(
|
|
Previews.camera,
|
|
Previews.path,
|
|
Previews.duration,
|
|
Previews.start_time,
|
|
Previews.end_time,
|
|
)
|
|
.where(
|
|
Previews.start_time.between(start_ts, end_ts)
|
|
| Previews.end_time.between(start_ts, end_ts)
|
|
| ((start_ts > Previews.start_time) & (end_ts < Previews.end_time))
|
|
)
|
|
.where(Previews.camera == camera_name)
|
|
.limit(1)
|
|
.get()
|
|
)
|
|
|
|
if not preview:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Preview not found"},
|
|
status_code=404,
|
|
)
|
|
|
|
diff = start_ts - preview.start_time
|
|
minutes = int(diff / 60)
|
|
seconds = int(diff % 60)
|
|
config: FrigateConfig = request.app.frigate_config
|
|
ffmpeg_cmd = [
|
|
config.ffmpeg.ffmpeg_path,
|
|
"-hide_banner",
|
|
"-loglevel",
|
|
"warning",
|
|
"-ss",
|
|
f"00:{minutes}:{seconds}",
|
|
"-t",
|
|
f"{end_ts - start_ts}",
|
|
"-i",
|
|
preview.path,
|
|
"-r",
|
|
"8",
|
|
"-vf",
|
|
"setpts=0.12*PTS",
|
|
"-loop",
|
|
"0",
|
|
"-c:v",
|
|
"gif",
|
|
"-f",
|
|
"gif",
|
|
"-",
|
|
]
|
|
|
|
process = sp.run(
|
|
ffmpeg_cmd,
|
|
capture_output=True,
|
|
)
|
|
|
|
if process.returncode != 0:
|
|
logger.error(process.stderr)
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Unable to create preview gif"},
|
|
status_code=500,
|
|
)
|
|
|
|
gif_bytes = process.stdout
|
|
else:
|
|
# need to generate from existing images
|
|
preview_dir = os.path.join(CACHE_DIR, "preview_frames")
|
|
file_start = f"preview_{camera_name}"
|
|
start_file = f"{file_start}-{start_ts}.{PREVIEW_FRAME_TYPE}"
|
|
end_file = f"{file_start}-{end_ts}.{PREVIEW_FRAME_TYPE}"
|
|
selected_previews = []
|
|
|
|
for file in sorted(os.listdir(preview_dir)):
|
|
if not file.startswith(file_start):
|
|
continue
|
|
|
|
if file < start_file:
|
|
continue
|
|
|
|
if file > end_file:
|
|
break
|
|
|
|
selected_previews.append(f"file '{os.path.join(preview_dir, file)}'")
|
|
selected_previews.append("duration 0.12")
|
|
|
|
if not selected_previews:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Preview not found"},
|
|
status_code=404,
|
|
)
|
|
|
|
last_file = selected_previews[-2]
|
|
selected_previews.append(last_file)
|
|
config: FrigateConfig = request.app.frigate_config
|
|
|
|
ffmpeg_cmd = [
|
|
config.ffmpeg.ffmpeg_path,
|
|
"-hide_banner",
|
|
"-loglevel",
|
|
"warning",
|
|
"-f",
|
|
"concat",
|
|
"-y",
|
|
"-protocol_whitelist",
|
|
"pipe,file",
|
|
"-safe",
|
|
"0",
|
|
"-i",
|
|
"/dev/stdin",
|
|
"-loop",
|
|
"0",
|
|
"-c:v",
|
|
"gif",
|
|
"-f",
|
|
"gif",
|
|
"-",
|
|
]
|
|
|
|
process = sp.run(
|
|
ffmpeg_cmd,
|
|
input=str.encode("\n".join(selected_previews)),
|
|
capture_output=True,
|
|
)
|
|
|
|
if process.returncode != 0:
|
|
logger.error(process.stderr)
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Unable to create preview gif"},
|
|
status_code=500,
|
|
)
|
|
|
|
gif_bytes = process.stdout
|
|
|
|
return Response(
|
|
gif_bytes,
|
|
media_type="image/gif",
|
|
headers={
|
|
"Cache-Control": f"private, max-age={max_cache_age}",
|
|
"Content-Type": "image/gif",
|
|
},
|
|
)
|
|
|
|
|
|
@router.get("/{camera_name}/start/{start_ts}/end/{end_ts}/preview.mp4")
|
|
def preview_mp4(
|
|
request: Request,
|
|
camera_name: str,
|
|
start_ts: float,
|
|
end_ts: float,
|
|
max_cache_age: int = Query(
|
|
604800, description="Max cache age in seconds. Default 7 days in seconds."
|
|
),
|
|
):
|
|
file_name = sanitize_filename(f"preview_{camera_name}_{start_ts}-{end_ts}.mp4")
|
|
|
|
if len(file_name) > 1000:
|
|
return JSONResponse(
|
|
content=(
|
|
{
|
|
"success": False,
|
|
"message": "Filename exceeded max length of 1000 characters.",
|
|
}
|
|
),
|
|
status_code=403,
|
|
)
|
|
|
|
path = os.path.join(CACHE_DIR, file_name)
|
|
|
|
if datetime.fromtimestamp(start_ts) < datetime.now().replace(minute=0, second=0):
|
|
# has preview mp4
|
|
try:
|
|
preview: Previews = (
|
|
Previews.select(
|
|
Previews.camera,
|
|
Previews.path,
|
|
Previews.duration,
|
|
Previews.start_time,
|
|
Previews.end_time,
|
|
)
|
|
.where(
|
|
Previews.start_time.between(start_ts, end_ts)
|
|
| Previews.end_time.between(start_ts, end_ts)
|
|
| ((start_ts > Previews.start_time) & (end_ts < Previews.end_time))
|
|
)
|
|
.where(Previews.camera == camera_name)
|
|
.limit(1)
|
|
.get()
|
|
)
|
|
except DoesNotExist:
|
|
preview = None
|
|
|
|
if not preview:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Preview not found"},
|
|
status_code=404,
|
|
)
|
|
|
|
diff = start_ts - preview.start_time
|
|
minutes = int(diff / 60)
|
|
seconds = int(diff % 60)
|
|
config: FrigateConfig = request.app.frigate_config
|
|
ffmpeg_cmd = [
|
|
config.ffmpeg.ffmpeg_path,
|
|
"-hide_banner",
|
|
"-loglevel",
|
|
"warning",
|
|
"-y",
|
|
"-ss",
|
|
f"00:{minutes}:{seconds}",
|
|
"-t",
|
|
f"{end_ts - start_ts}",
|
|
"-i",
|
|
preview.path,
|
|
"-r",
|
|
"8",
|
|
"-vf",
|
|
"setpts=0.12*PTS",
|
|
"-c:v",
|
|
"libx264",
|
|
"-movflags",
|
|
"+faststart",
|
|
path,
|
|
]
|
|
|
|
process = sp.run(
|
|
ffmpeg_cmd,
|
|
capture_output=True,
|
|
)
|
|
|
|
if process.returncode != 0:
|
|
logger.error(process.stderr)
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Unable to create preview gif"},
|
|
status_code=500,
|
|
)
|
|
|
|
else:
|
|
# need to generate from existing images
|
|
preview_dir = os.path.join(CACHE_DIR, "preview_frames")
|
|
file_start = f"preview_{camera_name}"
|
|
start_file = f"{file_start}-{start_ts}.{PREVIEW_FRAME_TYPE}"
|
|
end_file = f"{file_start}-{end_ts}.{PREVIEW_FRAME_TYPE}"
|
|
selected_previews = []
|
|
|
|
for file in sorted(os.listdir(preview_dir)):
|
|
if not file.startswith(file_start):
|
|
continue
|
|
|
|
if file < start_file:
|
|
continue
|
|
|
|
if file > end_file:
|
|
break
|
|
|
|
selected_previews.append(f"file '{os.path.join(preview_dir, file)}'")
|
|
selected_previews.append("duration 0.12")
|
|
|
|
if not selected_previews:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Preview not found"},
|
|
status_code=404,
|
|
)
|
|
|
|
last_file = selected_previews[-2]
|
|
selected_previews.append(last_file)
|
|
config: FrigateConfig = request.app.frigate_config
|
|
|
|
ffmpeg_cmd = [
|
|
config.ffmpeg.ffmpeg_path,
|
|
"-hide_banner",
|
|
"-loglevel",
|
|
"warning",
|
|
"-f",
|
|
"concat",
|
|
"-y",
|
|
"-protocol_whitelist",
|
|
"pipe,file",
|
|
"-safe",
|
|
"0",
|
|
"-i",
|
|
"/dev/stdin",
|
|
"-c:v",
|
|
"libx264",
|
|
"-movflags",
|
|
"+faststart",
|
|
path,
|
|
]
|
|
|
|
process = sp.run(
|
|
ffmpeg_cmd,
|
|
input=str.encode("\n".join(selected_previews)),
|
|
capture_output=True,
|
|
)
|
|
|
|
if process.returncode != 0:
|
|
logger.error(process.stderr)
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Unable to create preview gif"},
|
|
status_code=500,
|
|
)
|
|
|
|
headers = {
|
|
"Content-Description": "File Transfer",
|
|
"Cache-Control": f"private, max-age={max_cache_age}",
|
|
"Content-Type": "video/mp4",
|
|
"Content-Length": str(os.path.getsize(path)),
|
|
# nginx: https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_ignore_headers
|
|
"X-Accel-Redirect": f"/cache/{file_name}",
|
|
}
|
|
|
|
return FileResponse(
|
|
path,
|
|
media_type="video/mp4",
|
|
filename=file_name,
|
|
headers=headers,
|
|
)
|
|
|
|
|
|
@router.get("/review/{event_id}/preview")
|
|
def review_preview(
|
|
request: Request,
|
|
event_id: str,
|
|
format: str = Query(default="gif", enum=["gif", "mp4"]),
|
|
):
|
|
try:
|
|
review: ReviewSegment = ReviewSegment.get(ReviewSegment.id == event_id)
|
|
except DoesNotExist:
|
|
return JSONResponse(
|
|
content=({"success": False, "message": "Review segment not found"}),
|
|
status_code=404,
|
|
)
|
|
|
|
padding = 8
|
|
start_ts = review.start_time - padding
|
|
end_ts = (
|
|
review.end_time + padding if review.end_time else datetime.now().timestamp()
|
|
)
|
|
|
|
if format == "gif":
|
|
return preview_gif(request, review.camera, start_ts, end_ts)
|
|
else:
|
|
return preview_mp4(request, review.camera, start_ts, end_ts)
|
|
|
|
|
|
@router.get("/preview/{file_name}/thumbnail.jpg")
|
|
@router.get("/preview/{file_name}/thumbnail.webp")
|
|
def preview_thumbnail(file_name: str):
|
|
"""Get a thumbnail from the cached preview frames."""
|
|
if len(file_name) > 1000:
|
|
return JSONResponse(
|
|
content=(
|
|
{"success": False, "message": "Filename exceeded max length of 1000"}
|
|
),
|
|
status_code=403,
|
|
)
|
|
|
|
safe_file_name_current = sanitize_filename(file_name)
|
|
preview_dir = os.path.join(CACHE_DIR, "preview_frames")
|
|
|
|
try:
|
|
with open(
|
|
os.path.join(preview_dir, safe_file_name_current), "rb"
|
|
) as image_file:
|
|
jpg_bytes = image_file.read()
|
|
except FileNotFoundError:
|
|
return JSONResponse(
|
|
content=({"success": False, "message": "Image file not found"}),
|
|
status_code=404,
|
|
)
|
|
|
|
return Response(
|
|
jpg_bytes,
|
|
# FIXME: Shouldn't it be either jpg or webp depending on the endpoint?
|
|
media_type="image/webp",
|
|
headers={
|
|
"Content-Type": "image/webp",
|
|
"Cache-Control": "private, max-age=31536000",
|
|
},
|
|
)
|
|
|
|
|
|
####################### dynamic routes ###########################
|
|
|
|
|
|
@router.get("/{camera_name}/{label}/best.jpg")
|
|
@router.get("/{camera_name}/{label}/thumbnail.jpg")
|
|
def label_thumbnail(request: Request, camera_name: str, label: str):
|
|
label = unquote(label)
|
|
event_query = Event.select(fn.MAX(Event.id)).where(Event.camera == camera_name)
|
|
if label != "any":
|
|
event_query = event_query.where(Event.label == label)
|
|
|
|
try:
|
|
event_id = event_query.scalar()
|
|
|
|
return event_thumbnail(request, event_id, 60)
|
|
except DoesNotExist:
|
|
frame = np.zeros((175, 175, 3), np.uint8)
|
|
ret, jpg = cv2.imencode(".jpg", frame, [int(cv2.IMWRITE_JPEG_QUALITY), 70])
|
|
|
|
return Response(
|
|
jpg.tobytes,
|
|
media_type="image/jpeg",
|
|
headers={"Cache-Control": "no-store"},
|
|
)
|
|
|
|
|
|
@router.get("/{camera_name}/{label}/clip.mp4")
|
|
def label_clip(request: Request, camera_name: str, label: str):
|
|
label = unquote(label)
|
|
event_query = Event.select(fn.MAX(Event.id)).where(
|
|
Event.camera == camera_name, Event.has_clip == True
|
|
)
|
|
if label != "any":
|
|
event_query = event_query.where(Event.label == label)
|
|
|
|
try:
|
|
event = event_query.get()
|
|
|
|
return event_clip(request, event.id)
|
|
except DoesNotExist:
|
|
return JSONResponse(
|
|
content={"success": False, "message": "Event not found"}, status_code=404
|
|
)
|
|
|
|
|
|
@router.get("/{camera_name}/{label}/snapshot.jpg")
|
|
def label_snapshot(request: Request, camera_name: str, label: str):
|
|
"""Returns the snapshot image from the latest event for the given camera and label combo"""
|
|
label = unquote(label)
|
|
if label == "any":
|
|
event_query = (
|
|
Event.select(Event.id)
|
|
.where(Event.camera == camera_name)
|
|
.where(Event.has_snapshot == True)
|
|
.order_by(Event.start_time.desc())
|
|
)
|
|
else:
|
|
event_query = (
|
|
Event.select(Event.id)
|
|
.where(Event.camera == camera_name)
|
|
.where(Event.label == label)
|
|
.where(Event.has_snapshot == True)
|
|
.order_by(Event.start_time.desc())
|
|
)
|
|
|
|
try:
|
|
event = event_query.get()
|
|
return event_snapshot(request, event.id)
|
|
except DoesNotExist:
|
|
frame = np.zeros((720, 1280, 3), np.uint8)
|
|
ret, jpg = cv2.imencode(".jpg", frame, [int(cv2.IMWRITE_JPEG_QUALITY), 70])
|
|
|
|
return Response(
|
|
jpg.tobytes,
|
|
media_type="image/jpeg",
|
|
)
|