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https://github.com/blakeblackshear/frigate.git
synced 2024-12-23 19:11:14 +01:00
improve detection processing and restart when stuck
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Blake Blackshear
parent
d8aa73d26e
commit
a5bef89123
@ -31,7 +31,7 @@ FFMPEG_CONFIG = CONFIG.get('ffmpeg', {})
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FFMPEG_DEFAULT_CONFIG = {
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'global_args': FFMPEG_CONFIG.get('global_args',
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['-hide_banner','-loglevel','panic']),
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'hwaccel_args': FFMPEG_CONFIG.get('hwaccel_args',
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'hwaccel_args': FFMPEG_CONFIG.get('hwaccel_args',
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[]),
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'input_args': FFMPEG_CONFIG.get('input_args',
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['-avoid_negative_ts', 'make_zero',
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@ -68,6 +68,11 @@ class CameraWatchdog(threading.Thread):
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# wait a bit before checking
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time.sleep(30)
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if (self.tflite_process.detection_start.value > 0.0 and
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datetime.datetime.now().timestamp() - self.tflite_process.detection_start.value > 10):
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print("Detection appears to be stuck. Restarting detection process")
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time.sleep(30)
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for name, camera_process in self.camera_processes.items():
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process = camera_process['process']
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if not process.is_alive():
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@ -75,9 +80,8 @@ class CameraWatchdog(threading.Thread):
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camera_process['fps'].value = float(self.config[name]['fps'])
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camera_process['skipped_fps'].value = 0.0
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camera_process['detection_fps'].value = 0.0
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self.object_processor.camera_data[name]['current_frame_time'] = None
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process = mp.Process(target=track_camera, args=(name, self.config[name], FFMPEG_DEFAULT_CONFIG, GLOBAL_OBJECT_CONFIG,
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self.tflite_process.detect_lock, self.tflite_process.detect_ready, self.tflite_process.frame_ready, self.tracked_objects_queue,
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self.tflite_process.detection_queue, self.tracked_objects_queue,
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camera_process['fps'], camera_process['skipped_fps'], camera_process['detection_fps']))
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process.daemon = True
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camera_process['process'] = process
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@ -139,7 +143,7 @@ def main():
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'detection_fps': mp.Value('d', 0.0)
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}
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camera_process = mp.Process(target=track_camera, args=(name, config, FFMPEG_DEFAULT_CONFIG, GLOBAL_OBJECT_CONFIG,
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tflite_process.detect_lock, tflite_process.detect_ready, tflite_process.frame_ready, tracked_objects_queue,
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tflite_process.detection_queue, tracked_objects_queue,
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camera_processes[name]['fps'], camera_processes[name]['skipped_fps'], camera_processes[name]['detection_fps']))
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camera_process.daemon = True
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camera_processes[name]['process'] = camera_process
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@ -173,14 +177,16 @@ def main():
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for name, camera_stats in camera_processes.items():
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total_detection_fps += camera_stats['detection_fps'].value
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stats[name] = {
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'fps': camera_stats['fps'].value,
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'skipped_fps': camera_stats['skipped_fps'].value,
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'detection_fps': camera_stats['detection_fps'].value
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'fps': round(camera_stats['fps'].value, 2),
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'skipped_fps': round(camera_stats['skipped_fps'].value, 2),
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'detection_fps': round(camera_stats['detection_fps'].value, 2)
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}
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stats['coral'] = {
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'fps': total_detection_fps,
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'inference_speed': round(tflite_process.avg_inference_speed.value*1000, 2)
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'fps': round(total_detection_fps, 2),
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'inference_speed': round(tflite_process.avg_inference_speed.value*1000, 2),
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'detection_queue': tflite_process.detection_queue.qsize(),
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'detection_start': tflite_process.detection_start.value
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}
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rc = plasma_process.poll()
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@ -1,8 +1,10 @@
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import os
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import datetime
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import hashlib
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import multiprocessing as mp
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import numpy as np
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import SharedArray as sa
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import pyarrow.plasma as plasma
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import tflite_runtime.interpreter as tflite
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from tflite_runtime.interpreter import load_delegate
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from frigate.util import EventsPerSecond
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@ -60,77 +62,75 @@ class ObjectDetector():
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return detections
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def run_detector(detection_queue, avg_speed, start):
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print(f"Starting detection process: {os.getpid()}")
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plasma_client = plasma.connect("/tmp/plasma")
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object_detector = ObjectDetector()
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while True:
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object_id_str = detection_queue.get()
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object_id_hash = hashlib.sha1(str.encode(object_id_str))
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object_id = plasma.ObjectID(object_id_hash.digest())
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input_frame = plasma_client.get(object_id, timeout_ms=0)
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start.value = datetime.datetime.now().timestamp()
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# detect and put the output in the plasma store
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object_id_out = hashlib.sha1(str.encode(f"out-{object_id_str}")).digest()
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plasma_client.put(object_detector.detect_raw(input_frame), plasma.ObjectID(object_id_out))
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duration = datetime.datetime.now().timestamp()-start.value
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start.value = 0.0
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avg_speed.value = (avg_speed.value*9 + duration)/10
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class EdgeTPUProcess():
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def __init__(self):
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# TODO: see if we can use the plasma store with a queue and maintain the same speeds
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try:
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sa.delete("frame")
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except:
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pass
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try:
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sa.delete("detections")
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except:
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pass
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self.input_frame = sa.create("frame", shape=(1,300,300,3), dtype=np.uint8)
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self.detections = sa.create("detections", shape=(20,6), dtype=np.float32)
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self.detect_lock = mp.Lock()
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self.detect_ready = mp.Event()
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self.frame_ready = mp.Event()
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self.detection_queue = mp.Queue()
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self.avg_inference_speed = mp.Value('d', 0.01)
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self.detection_start = mp.Value('d', 0.0)
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self.detect_process = None
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self.start_or_restart()
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def run_detector(detect_ready, frame_ready, avg_speed):
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print(f"Starting detection process: {os.getpid()}")
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object_detector = ObjectDetector()
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input_frame = sa.attach("frame")
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detections = sa.attach("detections")
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while True:
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# wait until a frame is ready
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frame_ready.wait()
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start = datetime.datetime.now().timestamp()
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# signal that the process is busy
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frame_ready.clear()
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detections[:] = object_detector.detect_raw(input_frame)
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# signal that the process is ready to detect
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detect_ready.set()
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duration = datetime.datetime.now().timestamp()-start
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avg_speed.value = (avg_speed.value*9 + duration)/10
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self.detect_process = mp.Process(target=run_detector, args=(self.detect_ready, self.frame_ready, self.avg_inference_speed))
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def start_or_restart(self):
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self.detection_start.value = 0.0
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if (not self.detect_process is None) and self.detect_process.is_alive():
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self.detect_process.terminate()
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print("Waiting for detection process to exit gracefully...")
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self.detect_process.join(timeout=30)
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if self.detect_process.exitcode is None:
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print("Detection process didnt exit. Force killing...")
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self.detect_process.kill()
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self.detect_process.join()
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self.detect_process = mp.Process(target=run_detector, args=(self.detection_queue, self.avg_inference_speed, self.detection_start))
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self.detect_process.daemon = True
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self.detect_process.start()
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class RemoteObjectDetector():
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def __init__(self, labels, detect_lock, detect_ready, frame_ready):
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def __init__(self, name, labels, detection_queue):
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self.labels = load_labels(labels)
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self.input_frame = sa.attach("frame")
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self.detections = sa.attach("detections")
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self.name = name
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self.fps = EventsPerSecond()
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self.detect_lock = detect_lock
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self.detect_ready = detect_ready
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self.frame_ready = frame_ready
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self.plasma_client = plasma.connect("/tmp/plasma")
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self.detection_queue = detection_queue
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def detect(self, tensor_input, threshold=.4):
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detections = []
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with self.detect_lock:
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self.input_frame[:] = tensor_input
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# unset detections and signal that a frame is ready
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self.detect_ready.clear()
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self.frame_ready.set()
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# wait until the detection process is finished,
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self.detect_ready.wait()
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for d in self.detections:
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if d[1] < threshold:
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break
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detections.append((
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self.labels[int(d[0])],
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float(d[1]),
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(d[2], d[3], d[4], d[5])
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))
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now = f"{self.name}-{str(datetime.datetime.now().timestamp())}"
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object_id_frame = plasma.ObjectID(hashlib.sha1(str.encode(now)).digest())
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object_id_detections = plasma.ObjectID(hashlib.sha1(str.encode(f"out-{now}")).digest())
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self.plasma_client.put(tensor_input, object_id_frame)
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self.detection_queue.put(now)
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raw_detections = self.plasma_client.get(object_id_detections)
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for d in raw_detections:
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if d[1] < threshold:
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break
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detections.append((
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self.labels[int(d[0])],
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float(d[1]),
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(d[2], d[3], d[4], d[5])
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))
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self.plasma_client.delete([object_id_frame, object_id_detections])
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self.fps.update()
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return detections
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@ -34,7 +34,6 @@ class TrackedObjectProcessor(threading.Thread):
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'best_objects': {},
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'object_status': defaultdict(lambda: defaultdict(lambda: 'OFF')),
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'tracked_objects': {},
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'current_frame_time': None,
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'current_frame': np.zeros((720,1280,3), np.uint8),
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'object_id': None
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})
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@ -47,9 +46,6 @@ class TrackedObjectProcessor(threading.Thread):
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def get_current_frame(self, camera):
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return self.camera_data[camera]['current_frame']
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def get_current_frame_time(self, camera):
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return self.camera_data[camera]['current_frame_time']
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def run(self):
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while True:
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@ -93,7 +89,6 @@ class TrackedObjectProcessor(threading.Thread):
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# Set the current frame as ready
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###
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self.camera_data[camera]['current_frame'] = current_frame
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self.camera_data[camera]['current_frame_time'] = frame_time
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# store the object id, so you can delete it at the next loop
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previous_object_id = self.camera_data[camera]['object_id']
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@ -114,7 +114,7 @@ def start_or_restart_ffmpeg(ffmpeg_cmd, frame_size, ffmpeg_process=None):
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print(" ".join(ffmpeg_cmd))
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return sp.Popen(ffmpeg_cmd, stdout = sp.PIPE, bufsize=frame_size*10)
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def track_camera(name, config, ffmpeg_global_config, global_objects_config, detect_lock, detect_ready, frame_ready, detected_objects_queue, fps, skipped_fps, detection_fps):
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def track_camera(name, config, ffmpeg_global_config, global_objects_config, detection_queue, detected_objects_queue, fps, skipped_fps, detection_fps):
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print(f"Starting process for {name}: {os.getpid()}")
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# Merge the ffmpeg config with the global config
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@ -172,7 +172,7 @@ def track_camera(name, config, ffmpeg_global_config, global_objects_config, dete
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mask[:] = 255
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motion_detector = MotionDetector(frame_shape, mask, resize_factor=6)
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object_detector = RemoteObjectDetector('/labelmap.txt', detect_lock, detect_ready, frame_ready)
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object_detector = RemoteObjectDetector(name, '/labelmap.txt', detection_queue)
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object_tracker = ObjectTracker(10)
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@ -196,8 +196,8 @@ def track_camera(name, config, ffmpeg_global_config, global_objects_config, dete
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rc = ffmpeg_process.poll()
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if rc is not None:
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print(f"{name}: ffmpeg_process exited unexpectedly with {rc}")
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time.sleep(10)
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ffmpeg_process = start_or_restart_ffmpeg(ffmpeg_cmd, frame_size, ffmpeg_process)
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time.sleep(10)
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else:
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print(f"{name}: ffmpeg_process is still running but didnt return any bytes")
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continue
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