61 lines
1.6 KiB
Python
61 lines
1.6 KiB
Python
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#!/usr/bin/env python3
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"""
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video_cycler.py — Toggle /video start/stop on the device every CYCLE_S seconds.
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Pairs with sn65_monitor.py: this script provokes the flicker by cycling the
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static-pink video stream, while sn65_monitor measures. Press Ctrl+C to stop.
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"""
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import signal
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import sys
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import time
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from datetime import datetime
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import requests
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DEVICE_BASE = "http://192.168.45.8:5000"
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VIDEO_URL = f"{DEVICE_BASE}/video"
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CYCLE_S = 10.0
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HTTP_TIMEOUT_S = 3.0
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def video_start() -> None:
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try:
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requests.put(VIDEO_URL,
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json={"action": "start", "mode": "static-pink"},
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timeout=HTTP_TIMEOUT_S)
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except requests.exceptions.RequestException as e:
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print(f" video START failed: {e}")
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def video_stop() -> None:
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try:
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requests.put(VIDEO_URL, json={"action": "stop"},
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timeout=HTTP_TIMEOUT_S)
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except requests.exceptions.RequestException as e:
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print(f" video STOP failed: {e}")
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def main() -> None:
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# On Ctrl+C, make sure we leave video stopped.
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def _shutdown(*_):
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print("\nshutting down — video off")
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video_stop()
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sys.exit(0)
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signal.signal(signal.SIGINT, _shutdown)
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signal.signal(signal.SIGTERM, _shutdown)
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print(f"VIDEO CYCLER — {CYCLE_S:.0f} s on / 0.5 s off (Ctrl+C to stop)\n")
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cycle = 0
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while True:
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cycle += 1
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ts = datetime.now().strftime("%H:%M:%S")
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print(f"[{ts}] cycle {cycle:04d} video ON", flush=True)
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video_start()
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time.sleep(CYCLE_S)
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video_stop()
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time.sleep(0.5)
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if __name__ == "__main__":
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main()
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