Subversion Repositories Projects

import numpy as np

#np.set_printoptions(threshold=np.nan)

import picamera

import picamera.array

import sys

import os

import time

import mmap

##>> Gain access to MMAP

##------------------------------------------------------------------------------------------------------

INDATAFILENAME = '/home/pi/ExPlat/input.dat'

LENGTHDATAMAP = 1024

inDataFile = open(INDATAFILENAME, 'r+')

inDataNo = inDataFile.fileno()

inDataMap = mmap.mmap(inDataNo, LENGTHDATAMAP, access=mmap.ACCESS_WRITE)

s = 0;

##>> Analyze Numpy Array and Print Motion Vector Data

##------------------------------------------------------------------------------------------------------

class AnalyzeArray(picamera.array.PiMotionAnalysis):

    def analyse(self, a):

            global s

            global inDataMap

            s += a[20,15][0]

            #print s

            inDataMap.seek(0)

            inDataMap.write('%d' %s + '\n')

##>> Start Capture and call AnalyzeArray after every frame

##------------------------------------------------------------------------------------------------------

def get_values():

    with picamera.PiCamera() as camera:

        with AnalyzeArray(camera) as output:

            camera.resolution = (640, 480)

            camera.framerate = (20, 1)

            camera.start_recording(

                '/dev/null', format='h264', motion_output=output)

            camera.wait_recording(0)

            camera.stop_recording()