#!/bin/bash
#
# Copyright 2013 Dany Qumsiyeh
#
#   Licensed under the Apache License, Version 2.0 (the "License");
#   you may not use this file except in compliance with the License.
#   You may obtain a copy of the License at
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS,
#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#   See the License for the specific language governing permissions and
#   limitations under the License.

set -o errexit
set -o nounset

ARDUINO=/dev/ttyACM0

# for git version of scanimage:
# export LD_LIBRARY_PATH=sane-backends/backend/.libs

SCAN_SETTINGS='--mode Color --resolution 300'

# set up serial port for reading
stty -F $ARDUINO 9600 min 1 time 2 -icrnl

scanimage -V
echo

# find scanners
SCANNERS=$(scanimage -L)
echo "$SCANNERS"
SCANNER1=$(echo "$SCANNERS" | head -n 1 | cut -d'`' -f2 | cut -d"'" -f1)
SCANNER2=$(echo "$SCANNERS" | tail -n 1 | cut -d'`' -f2 | cut -d"'" -f1)
echo
echo $SCANNER1
echo $SCANNER2
echo

echo 'ready to scan...'

cat $ARDUINO \
| while read line; do
echo 'scanning next page' > /dev/stderr
echo
done \
| tee >(scanimage --device $SCANNER1 $SCAN_SETTINGS --calibration-file /tmp/sane_cal1 --batch=%06da.pnm --batch-prompt) \
| tee >(scanimage --device $SCANNER2 $SCAN_SETTINGS --calibration-file /tmp/sane_cal2 --batch=%06db.pnm --batch-prompt)