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photobooth.py
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photobooth.py
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#!/usr/bin/env python3
import RPi.GPIO as GPIO
import picamera
import time
import subprocess
import shutil
import threading
import random
from os import mkdir
from datetime import datetime
import json
import qrcode
from zipfile import ZipFile
# Button debouncing class from https://raspberrypi.stackexchange.com/questions/76667/debouncing-buttons-with-rpi-gpio-too-many-events-detected
class ButtonHandler(threading.Thread):
def __init__(self, pin, func, edge='both', bouncetime=200):
super().__init__(daemon=True)
self.edge = edge
self.func = func
self.pin = pin
self.bouncetime = float(bouncetime)/1000
self.lastpinval = GPIO.input(self.pin)
self.lock = threading.Lock()
def __call__(self, *args):
if not self.lock.acquire(blocking=False):
return
t = threading.Timer(self.bouncetime, self.read, args=args)
t.start()
def read(self, *args):
pinval = GPIO.input(self.pin)
if (
((pinval == 0 and self.lastpinval == 1) and
(self.edge in ['falling', 'both'])) or
((pinval == 1 and self.lastpinval == 0) and
(self.edge in ['rising', 'both']))
):
self.func(*args)
self.lastpinval = pinval
self.lock.release()
class PhotoBooth:
# Physical pin 13
GPIO_PIN = 27
# Background files
backgrounds_path = 'Blender/backgrounds/'
backgrounds = ['moon_crop.jpg', 'the_scream_crop.jpg']
hostname = 'photobooth.lan/'
def __init__(self):
# Camera setup
self.camera = picamera.PiCamera()
self.camera.resolution = (820, 1232)
self.camera.awb_mode = 'off'
self.camera.awb_gains = (363/256, 531/256)
GPIO.setmode(GPIO.BCM)
GPIO.setup(PhotoBooth.GPIO_PIN, GPIO.IN, pull_up_down=GPIO.PUD_UP)
self.cb = ButtonHandler(PhotoBooth.GPIO_PIN, self.onButton, edge='rising', bouncetime=20)
self.cb.start()
GPIO.add_event_detect(PhotoBooth.GPIO_PIN, GPIO.RISING, callback=self.cb)
self.latest_image = ''
self.latest_info = {
'result_link': PhotoBooth.hostname + 'results/'
}
# Launch Blender/process render
def do_render(self):
shutil.copyfile(PhotoBooth.backgrounds_path + random.choice(PhotoBooth.backgrounds), 'background.jpg')
arglist = ['blender', '-b', 'Blender/GeneratePreview.blend', '-x', '0', '-o', './render#.png', '-f', '1']
subprocess.run(arglist)
def make_static(self):
output_dir = 'results/result{:%H%M%S}'.format(datetime.now())
mkdir(output_dir)
shutil.copyfile('render1.png', output_dir+'/result.png')
shutil.copyfile('background.jpg', output_dir+'/background.jpg')
shutil.copyfile('ref.jpg', output_dir+'/ref.jpg')
shutil.copyfile(self.latest_image, output_dir+'/original.jpg')
shutil.copyfile('Blender/composite.blend', output_dir+'/composite.blend')
shutil.copyfile('result_static.html', output_dir+'/index.html')
qr = qrcode.make(PhotoBooth.hostname + output_dir+'/index.html')
qr.save('qr_latest.png')
zf = ZipFile(output_dir+'/all_files.zip', mode='w')
zf.write(output_dir+'/result.png', arcname='result.png')
zf.write(output_dir+'/background.jpg', arcname='background.jpg')
zf.write(output_dir+'/ref.jpg', arcname='ref.jpg')
zf.write(output_dir+'/original.jpg', arcname='original.jpg')
zf.write(output_dir+'/composite.blend', arcname='composite.blend')
zf.close()
self.latest_info['result_link'] = PhotoBooth.hostname + output_dir
with open('latest.json', 'w') as outfile:
json.dump(self.latest_info, outfile)
#GPIO Callback
def onButton(self, channel):
print("Callback Triggered")
if channel == PhotoBooth.GPIO_PIN:
print("Taking photo")
self.latest_image = 'image{:0}.jpg'.format(int(time.time()))
self.camera.capture(self.latest_image)
print(self.latest_image)
shutil.copyfile(self.latest_image, "latest.jpg")
# Move webpage to Processing
subprocess.run(["xdotool", "search", "--desktop", "0", "--class", "chromium", "windowactivate", "--sync", "key", "P"])
self.do_render()
self.make_static()
# Move webpage to Result
subprocess.run(["xdotool", "search", "--desktop", "0", "--class", "chromium", "windowactivate", "--sync", "key", "R"])
def main():
print("Starting...")
pb = PhotoBooth()
print("Init chrome")
chrome_proc = subprocess.Popen(["chromium-browser", "--noerrdialogs", "--incognito", "--kiosk", "http://localhost:80/welcome.html"])
if __name__ == "__main__":
main()
input()