#!/usr/bin/bash
set -e

usage() {
    echo "USAGE: $0 FILE.pdf"
    exit 0
}

if [ "$1" == '-h' ] || [[ "$1" != *.pdf ]]; then
    usage
fi

DEVICE='pixma:04A9178A_31A16C'
FORMAT='png'
RES=300

scanimage -d "$DEVICE" --format="$FORMAT" --resolution "$RES" > "$1"
convert "$1" "$1"