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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
import pyarrow as pa
node = Node()
IMAGE_INDEX = int(os.getenv("IMAGE_INDEX", 0))
IMAGE_WIDTH = int(os.getenv("IMAGE_WIDTH", 960))
IMAGE_HEIGHT = int(os.getenv("IMAGE_HEIGHT", 540))
video_capture = cv2.VideoCapture(IMAGE_INDEX)
video_capture.set(cv2.CAP_PROP_FRAME_WIDTH, IMAGE_WIDTH)
video_capture.set(cv2.CAP_PROP_FRAME_HEIGHT, IMAGE_HEIGHT)
font = cv2.FONT_HERSHEY_SIMPLEX
start = time.time()
# Run for 20 seconds
while time.time() - start < 1000:
# Wait next dora_input
event = node.next()
if event is None:
break
event_type = event["type"]
if event_type == "INPUT":
ret, frame = video_capture.read()
if not ret:
frame = np.zeros((IMAGE_HEIGHT, IMAGE_WIDTH, 3), dtype=np.uint8)
cv2.putText(
frame,
"No Webcam was found at index %d" % (IMAGE_INDEX),
(int(30), int(30)),
font,
0.75,
(255, 255, 255),
2,
1,
)
if len(frame) != IMAGE_HEIGHT * IMAGE_WIDTH * 3:
print("frame size is not correct")
frame = cv2.resize(frame, (IMAGE_WIDTH, IMAGE_HEIGHT))
frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
node.send_output(
"image",
pa.array(frame.ravel()),
event["metadata"],
)
node.send_output("text", pa.array([f"send image at: {time.time()}"]))
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