#!/bin/sh
export camdev=$1
if [ -z $camdev ];then
echo enter camera/v4l device path
read camdev
fi
echo > /tmp/oldtxt.txt
while true;do
ffmpeg -f v4l2 -i $camdev -frames 1 -f mjpeg pipe:1 2>/dev/null|tesseract stdin /tmp/txt 2>/dev/null
export len=`cat /tmp/txt.txt|tr -d \\n|wc -l`
if [ $len -gt 0 ];then
if diff /tmp/txt.txt /tmp/oldtxt.txt > /dev/null 2>/dev/null;then
sleep .01
else
play -n -q synth square 900 trim 00:00:00 00:00:00.025
clear
export IFS=$(echo -en \\n\\b)
for f in `cat /tmp/txt.txt`;do
echo $f
done

cp /tmp/txt.txt /tmp/oldtxt.txt
fi
else
play -n -q synth square 200 trim 00:00:00 00:00:00.005
fi
done