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# import the necessary packages
from .webcamvideostream import WebcamVideoStream
class VideoStream:
def __init__(self, src=0, usePiCamera=False, resolution=(320, 240),
framerate=32):
# check to see if the picamera module should be used
if usePiCamera:
# only import the picamera packages unless we are
# explicity told to do so -- this helps remove the
# requirement of `picamera[array]` from desktops or
# laptops that still want to use the `imutils` package
from .pivideostream import PiVideoStream
# initialize the picamera stream and allow the camera
# sensor to warmup
self.stream = PiVideoStream(resolution=resolution,
framerate=framerate)
# otherwise, we are using OpenCV so initialize the webcam
# stream
else:
self.stream = WebcamVideoStream(src=src)
def start(self):
# start the threaded video stream
return self.stream.start()
def update(self):
# grab the next frame from the stream
self.stream.update()
def read(self):
# return the current frame
return self.stream.read()
def stop(self):
# stop the thread and release any resources
self.stream.stop()
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