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66 lines
1.8 KiB
Python
66 lines
1.8 KiB
Python
import subprocess
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import tempfile
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from pyA20.gpio import gpio, port
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from bureau import Bureau, add_api
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class Photography(Bureau):
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"""
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The Photography dept. provides document camera and other image
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capture services for other bureaus.
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"""
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name = "Photography Dept."
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prefix = "PX"
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version = 0
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doc_light_pin = port.PG0
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def __init__(self):
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Bureau.__init__(self)
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# set up the gpios for lamp & knobs
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gpio.init()
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gpio.pullup(self.doc_light_pin, 0) # reset pullup state
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gpio.pullup(self.doc_light_pin, gpio.PULLDOWN)
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def _doc_light_on(self):
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gpio.output(self.doc_light_pin, gpio.HIGH)
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def _doc_light_off(self):
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gpio.output(self.doc_light_pin, gpio.LOW)
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@add_api("photo", "Get Document Photo")
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def photo(self):
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"""
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Takes a photograph using the document camera. Returns
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the file name.
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"""
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self._doc_light_on()
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tmpimg = tempfile.NamedTemporaryFile(suffix=".jpg", delete=False)
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tmpimg.close()
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# TODO: make more reliable
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# TODO: make resolution config variable
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# this is a dirty hack to keep the webcam system calls from hanging
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#cmd1 = "fswebcam --jpeg 95 --no-banner --resolution 320x240 /dev/null"
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#cmd2 = "fswebcam --jpeg 95 --no-banner --resolution 1920x1080 "
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#cmd2 += "-F 2 -S 1" + tmpimg.name
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#cmd1 = "uvccapture -d/dev/video1 -x320 -y240 -o /dev/null"
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cmd2 = "uvccapture -d/dev/video1 -D2 -m -x3264 -y2448 -o" + tmpimg.name
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#subprocess.check_output(cmd1.split())
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subprocess.check_output(cmd2.split())
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self._doc_light_off()
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return {"photo": tmpimg.name}
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def main():
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px = Photography()
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px.run()
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if __name__ == "__main__":
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main()
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