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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import os
import time
import numpy as np
import cv2
from dora import Node
node = Node()
CAMERA_INDEX = int(os.getenv("CAMERA_INDEX", 0))
CAMERA_WIDTH = 640
CAMERA_HEIGHT = 480
video_capture = cv2.VideoCapture(CAMERA_INDEX)
font = cv2.FONT_HERSHEY_SIMPLEX
start = time.time()
# Run for 20 seconds
while time.time() - start < 10:
# Wait next dora_input
event = node.next()
event_type = event["type"]
if event_type == "INPUT":
ret, frame = video_capture.read()
if not ret:
frame = np.zeros((CAMERA_HEIGHT, CAMERA_WIDTH, 3), dtype=np.uint8)
cv2.putText(
frame,
"No Webcam was found at index %d" % (CAMERA_INDEX),
(int(30), int(30)),
font,
0.75,
(255, 255, 255),
2,
1,
)
node.send_output(
"image",
cv2.imencode(".jpg", frame)[1].tobytes(),
event["metadata"],
)
elif event_type == "STOP":
print("received stop")
break
else:
print("received unexpected event:", event_type)
break
video_capture.release()
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