You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
66 lines
1.8 KiB
Python
66 lines
1.8 KiB
Python
import subprocess
|
|
import tempfile
|
|
|
|
from pyA20.gpio import gpio, port
|
|
|
|
from bureau import Bureau, add_api
|
|
|
|
|
|
class Photography(Bureau):
|
|
"""
|
|
The Photography dept. provides document camera and other image
|
|
capture services for other bureaus.
|
|
"""
|
|
|
|
name = "Photography Dept."
|
|
prefix = "PX"
|
|
version = 0
|
|
doc_light_pin = port.PG0
|
|
|
|
def __init__(self):
|
|
Bureau.__init__(self)
|
|
|
|
# set up the gpios for lamp & knobs
|
|
gpio.init()
|
|
gpio.pullup(doc_light_pin, 0) # reset pullup state
|
|
gpio.pullup(doc_light_pin, gpio.PULLDOWN)
|
|
|
|
|
|
def _doc_light_on(self):
|
|
gpio.output(self.doc_light_pin, gpio.HIGH)
|
|
|
|
def _doc_light_off(self):
|
|
gpio.output(self.doc_light_pin, gpio.LOW)
|
|
|
|
@add_api("photo", "Get Document Photo")
|
|
def photo(self):
|
|
"""
|
|
Takes a photograph using the document camera. Returns
|
|
the file name.
|
|
"""
|
|
self._doc_light_on()
|
|
tmpimg = tempfile.NamedTemporaryFile(suffix=".jpg", delete=False)
|
|
tmpimg.close()
|
|
|
|
# TODO: make more reliable
|
|
# TODO: make resolution config variable
|
|
# this is a dirty hack to keep the webcam system calls from hanging
|
|
#cmd1 = "fswebcam --jpeg 95 --no-banner --resolution 320x240 /dev/null"
|
|
#cmd2 = "fswebcam --jpeg 95 --no-banner --resolution 1920x1080 "
|
|
#cmd2 += "-F 2 -S 1" + tmpimg.name
|
|
#cmd1 = "uvccapture -d/dev/video1 -x320 -y240 -o /dev/null"
|
|
cmd2 = "uvccapture -d/dev/video1 -D2 -m -x3264 -y2448 -o" + tmpimg.name
|
|
#subprocess.check_output(cmd1.split())
|
|
subprocess.check_output(cmd2.split())
|
|
self._doc_light_off()
|
|
return {"photo": tmpimg.name}
|
|
|
|
|
|
def main():
|
|
px = Photography()
|
|
px.run()
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|