""" 
Demonstrate creation of an image filter, applying it to a source and creating a new source 
based on the filter.
"""


import ch.psi.pshell.imaging.Filter as Filter
from ch.psi.pshell.imaging.Utils import *


class MyFilter(Filter):
    def process(self, image, data):
        image = grayscale(image)
        image = blur(image)
        image = sobel(image)
        return image

#Setting the filter to a source
src1.setFilter(MyFilter())

#Creating a new source with the filter
src2.setFilter(None)
add_device(MyFilter("f1"), True)
#f1.passive = True
src2.addListener(f1)