forked from Github/frigate
initial commit
This commit is contained in:
Jason Hunter
committed by
Blake Blackshear
Blake Blackshear
parent
dc759a3e56
commit
a476bc9885
@@ -1,20 +1,14 @@
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import datetime
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import json
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import logging
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import os
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import queue
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import subprocess as sp
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import threading
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import time
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from collections import defaultdict
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from pathlib import Path
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import psutil
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import shutil
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from frigate.config import FrigateConfig
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from frigate.const import RECORD_DIR, CLIPS_DIR, CACHE_DIR
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from frigate.models import Event
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from frigate.config import FrigateConfig, RecordConfig
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from frigate.const import CLIPS_DIR
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from frigate.models import Event, Recordings
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from peewee import fn
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@@ -39,8 +33,16 @@ class EventProcessor(threading.Thread):
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if event_data["false_positive"]:
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return False
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# if there are required zones and there is no overlap
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required_zones = self.config.cameras[camera].clips.required_zones
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record_config: RecordConfig = self.config.cameras[camera].record
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# Recording clips is disabled
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if not record_config.enabled or (
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record_config.retain_days == 0 and not record_config.events.enabled
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):
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return False
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# If there are required zones and there is no overlap
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required_zones = record_config.events.required_zones
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if len(required_zones) > 0 and not set(event_data["entered_zones"]) & set(
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required_zones
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):
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@@ -49,208 +51,65 @@ class EventProcessor(threading.Thread):
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)
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return False
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return True
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def refresh_cache(self):
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cached_files = os.listdir(CACHE_DIR)
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files_in_use = []
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for process in psutil.process_iter():
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try:
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if process.name() != "ffmpeg":
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continue
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flist = process.open_files()
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if flist:
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for nt in flist:
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if nt.path.startswith(CACHE_DIR):
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files_in_use.append(nt.path.split("/")[-1])
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except:
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continue
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for f in cached_files:
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if f in files_in_use or f in self.cached_clips:
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continue
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basename = os.path.splitext(f)[0]
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camera, date = basename.rsplit("-", maxsplit=1)
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start_time = datetime.datetime.strptime(date, "%Y%m%d%H%M%S")
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ffprobe_cmd = [
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"ffprobe",
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"-v",
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"error",
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"-show_entries",
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"format=duration",
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"-of",
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"default=noprint_wrappers=1:nokey=1",
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f"{os.path.join(CACHE_DIR, f)}",
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]
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p = sp.run(ffprobe_cmd, capture_output=True)
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if p.returncode == 0:
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duration = float(p.stdout.decode().strip())
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else:
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logger.info(f"bad file: {f}")
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os.remove(os.path.join(CACHE_DIR, f))
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continue
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self.cached_clips[f] = {
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"path": f,
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"camera": camera,
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"start_time": start_time.timestamp(),
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"duration": duration,
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}
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if len(self.events_in_process) > 0:
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earliest_event = min(
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self.events_in_process.values(), key=lambda x: x["start_time"]
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)["start_time"]
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else:
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earliest_event = datetime.datetime.now().timestamp()
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# if the earliest event is more tha max seconds ago, cap it
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max_seconds = self.config.clips.max_seconds
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earliest_event = max(
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earliest_event,
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datetime.datetime.now().timestamp() - self.config.clips.max_seconds,
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)
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for f, data in list(self.cached_clips.items()):
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if earliest_event - 90 > data["start_time"] + data["duration"]:
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del self.cached_clips[f]
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logger.debug(f"Cleaning up cached file {f}")
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os.remove(os.path.join(CACHE_DIR, f))
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# if we are still using more than 90% of the cache, proactively cleanup
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cache_usage = shutil.disk_usage("/tmp/cache")
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while (
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cache_usage.used / cache_usage.total > 0.9
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and cache_usage.free < 200000000
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and len(self.cached_clips) > 0
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# If the required objects are not present
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if (
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record_config.events.objects is not None
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and event_data["label"] not in record_config.events.objects
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):
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logger.warning("More than 90% of the cache is used.")
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logger.warning(
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"Consider increasing space available at /tmp/cache or reducing max_seconds in your clips config."
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logger.debug(
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f"Not creating clip for {event_data['id']} because it did not contain required objects"
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)
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logger.warning("Proactively cleaning up the cache...")
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oldest_clip = min(self.cached_clips.values(), key=lambda x: x["start_time"])
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del self.cached_clips[oldest_clip["path"]]
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os.remove(os.path.join(CACHE_DIR, oldest_clip["path"]))
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cache_usage = shutil.disk_usage("/tmp/cache")
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def create_clip(self, camera, event_data, pre_capture, post_capture):
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# get all clips from the camera with the event sorted
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sorted_clips = sorted(
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[c for c in self.cached_clips.values() if c["camera"] == camera],
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key=lambda i: i["start_time"],
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)
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# if there are no clips in the cache or we are still waiting on a needed file check every 5 seconds
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wait_count = 0
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while (
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len(sorted_clips) == 0
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or sorted_clips[-1]["start_time"] + sorted_clips[-1]["duration"]
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< event_data["end_time"] + post_capture
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):
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if wait_count > 4:
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logger.warning(
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f"Unable to create clip for {camera} and event {event_data['id']}. There were no cache files for this event."
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)
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return False
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logger.debug(f"No cache clips for {camera}. Waiting...")
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time.sleep(5)
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self.refresh_cache()
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# get all clips from the camera with the event sorted
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sorted_clips = sorted(
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[c for c in self.cached_clips.values() if c["camera"] == camera],
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key=lambda i: i["start_time"],
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)
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wait_count += 1
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playlist_start = event_data["start_time"] - pre_capture
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playlist_end = event_data["end_time"] + post_capture
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playlist_lines = []
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for clip in sorted_clips:
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# clip ends before playlist start time, skip
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if clip["start_time"] + clip["duration"] < playlist_start:
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continue
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# clip starts after playlist ends, finish
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if clip["start_time"] > playlist_end:
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break
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playlist_lines.append(f"file '{os.path.join(CACHE_DIR,clip['path'])}'")
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# if this is the starting clip, add an inpoint
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if clip["start_time"] < playlist_start:
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playlist_lines.append(
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f"inpoint {int(playlist_start-clip['start_time'])}"
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)
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# if this is the ending clip, add an outpoint
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if clip["start_time"] + clip["duration"] > playlist_end:
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playlist_lines.append(
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f"outpoint {int(playlist_end-clip['start_time'])}"
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)
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clip_name = f"{camera}-{event_data['id']}"
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ffmpeg_cmd = [
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"ffmpeg",
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"-y",
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"-protocol_whitelist",
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"pipe,file",
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"-f",
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"concat",
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"-safe",
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"0",
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"-i",
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"-",
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"-c",
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"copy",
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"-movflags",
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"+faststart",
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f"{os.path.join(CLIPS_DIR, clip_name)}.mp4",
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]
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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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if p.returncode != 0:
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logger.error(p.stderr)
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return False
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return True
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def verify_clip(self, camera, end_time):
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# check every 5 seconds for the last required recording
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for _ in range(4):
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recordings_count = (
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Recordings.select()
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.where(Recordings.camera == camera, Recordings.end_time > end_time)
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.limit(1)
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.count()
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)
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if recordings_count > 0:
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return True
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logger.debug(f"Missing recording for {camera} clip. Waiting...")
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time.sleep(5)
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logger.warning(
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f"Unable to verify clip for {camera}. There were no recordings for this camera."
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)
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return False
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def run(self):
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while not self.stop_event.is_set():
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try:
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event_type, camera, event_data = self.event_queue.get(timeout=10)
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except queue.Empty:
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if not self.stop_event.is_set():
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self.refresh_cache()
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# if not self.stop_event.is_set():
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# self.refresh_cache()
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continue
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logger.debug(f"Event received: {event_type} {camera} {event_data['id']}")
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self.refresh_cache()
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# self.refresh_cache()
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if event_type == "start":
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self.events_in_process[event_data["id"]] = event_data
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if event_type == "end":
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clips_config = self.config.cameras[camera].clips
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record_config: RecordConfig = self.config.cameras[camera].record
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clip_created = False
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if self.should_create_clip(camera, event_data):
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if clips_config.enabled and (
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clips_config.objects is None
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or event_data["label"] in clips_config.objects
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):
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clip_created = self.create_clip(
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camera,
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event_data,
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clips_config.pre_capture,
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clips_config.post_capture,
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)
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has_clip = self.should_create_clip(camera, event_data)
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if clip_created or event_data["has_snapshot"]:
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# Wait for recordings to be ready
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if has_clip:
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has_clip = self.verify_clip(
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camera,
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event_data["end_time"] + record_config.events.post_capture,
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)
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if has_clip or event_data["has_snapshot"]:
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Event.create(
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id=event_data["id"],
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label=event_data["label"],
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@@ -261,11 +120,12 @@ class EventProcessor(threading.Thread):
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false_positive=event_data["false_positive"],
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zones=list(event_data["entered_zones"]),
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thumbnail=event_data["thumbnail"],
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has_clip=clip_created,
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has_clip=has_clip,
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has_snapshot=event_data["has_snapshot"],
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)
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del self.events_in_process[event_data["id"]]
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self.event_processed_queue.put((event_data["id"], camera, clip_created))
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self.event_processed_queue.put((event_data["id"], camera, has_clip))
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logger.info(f"Exiting event processor...")
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