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#!/usr/bin/python2
import cv
import time
import numpy as np
import logging
import random241arg as arg
import random241sensor as sensor
import random241osc as osc
showStream = False
stop_key = 0
capture = True
camNumber = 1
time_delta = 60 * 60 / 2
logging.basicConfig(filename='random241.log',
format='%(asctime)s %(message)s',
filemode='w', level=logging.INFO)
last_time = time.time()
# Read parameters
params = arg.read_params()
# Define which cam to use, etc.
#cam = sensor.capture(params['-c'], showStream)
# Get frame and size information from camera
cam = cv.CaptureFromCAM(camNumber)
frame = cv.QueryFrame(cam)
if frame is not None:
frame_size = cv.GetSize(frame)
logging.info('Grabbing random numbers from: %dx%dpx.',
frame_size[0], frame_size[1])
# Get matrix with values from frame
mat = cv.GetMat(frame)
frame_values = np.asarray(mat)
# Create grayscale image
gray_values = sensor.bgr2gray(frame_values)
# Define the time to run the test
time_delta = time_delta + time.time()
# Setup OSC
osc.connect_to_server("127.0.0.1", 57120)
# Main loop for accessing the camera and calculating random numbers from it
#while True:
while time_delta > time.time():
# last_time = time.time()
img = cv.QueryFrame(cam)
# Get a numpy array with rgb values
mat_from_frame = sensor.frame_to_mat(img)
gray_mat = sensor.bgr2gray(mat_from_frame)
randomness = sensor.harvest_entropy(gray_mat)
if randomness is not None:
delta = time.time() - last_time
last_time = time.time()
osc.send_msg(delta, randomness)
if showStream:
while stop_key != ord("q"):
cv.ShowImage("Americium 241", img)
key = cv.WaitKey(2)
#time.sleep(5)
#random241sensor.set_capture(False)
else:
logging.error('Connect camera %d first!', camNumber)
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