#!/bin/bash

CORE=4
DDSTool="/home/djbuldog/Downloads/x-plane/dev_scenery/xptools_lin_12-2/tools/DDSTool"
DIR="/opt/X-Plane 10/Custom Scenery/zPhotoXP_+49+016_17_Brno_XP10_2013-01/textures3"

function 2png() {

task=1
for jpgfile in *.jpg
do
  if [ $((task%CORE)) == $1 ]
  then
    file=`echo $jpgfile | cut -d "." -f 1`
    echo -n "$1"
    convert "$file.jpg" "$file.png"
  fi
  task=$((task+1))
done

}

function 2dds() {

task=1
for jpgfile in *.jpg
do
  if [ $((task%CORE)) == $1 ]
  then
    file=`echo $jpgfile | cut -d "." -f 1`
    echo -n "$1"
    #$DDSTool --png2dxt1 "$file.png" "$file.dds"
    nvcompress "$file.jpg" "$file.dds"
  fi
  task=$((task+1))
done

}

function kill_childs() {
  for i in `seq 0 $CORE`
  do
    kill ${pid[$i]} 2>/dev/null
  done
  echo
  echo "All childs killed"
  exit 0
}

trap 'kill_childs' SIGINT

cd "$DIR"

for i in `seq 0 $CORE`
do
  2png $i & pid[$i]=$!
done

for i in `seq 0 $CORE`
do
  wait ${pid[$i]}
done

echo
echo "Finished"