| #!/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() | |