forked from 170010011/fr
43 lines
1.1 KiB
Python
43 lines
1.1 KiB
Python
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# import the necessary packages
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from threading import Thread
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import cv2
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class WebcamVideoStream:
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def __init__(self, src=0, name="WebcamVideoStream"):
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# initialize the video camera stream and read the first frame
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# from the stream
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self.stream = cv2.VideoCapture(src)
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(self.grabbed, self.frame) = self.stream.read()
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# initialize the thread name
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self.name = name
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# initialize the variable used to indicate if the thread should
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# be stopped
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self.stopped = False
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def start(self):
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# start the thread to read frames from the video stream
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t = Thread(target=self.update, name=self.name, args=())
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t.daemon = True
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t.start()
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return self
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def update(self):
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# keep looping infinitely until the thread is stopped
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while True:
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# if the thread indicator variable is set, stop the thread
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if self.stopped:
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return
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# otherwise, read the next frame from the stream
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(self.grabbed, self.frame) = self.stream.read()
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def read(self):
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# return the frame most recently read
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return self.frame
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def stop(self):
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# indicate that the thread should be stopped
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self.stopped = True
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