iankelling.org Git - distro-setup/blob - ziva-screen

   1 #!/bin/bash
   2
   3 # Get screenshots from bow, discard them if they dont change much.
   4
   5 source /usr/local/lib/err
   6 [[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
   7
   8 f=/run/user/1000/ziva-tmp.jpg
   9
  10 cd /d/ziva-log
  11 shopt -s nullglob
  12 jpgs=( 20*jpg )
  13 if (( ${#jpgs[@]} >= 1 )); then
  14   lastf=$(ls -1 20*jpg  | tail -n1)
  15 fi
  16
  17 ssh bow DISPLAY=:0 scrot -z $f 2>/dev/null || exit 0
  18 rsync --inplace bow:$f /d/ziva-log 2>/dev/null || exit 0
  19 ssh bow rm -f $f
  20
  21 same=false
  22 if [[ $lastf ]]; then
  23   # returns 2 on error, but maybe in that case we want to ignore, file the image away
  24   # and then it can go away in a subsequent comparison. going with that for now.
  25   diff=$(compare -metric MSE $lastf ziva-tmp.jpg /dev/null |& sed 's/[^0-9].*//') ||:
  26   if printf "%s\n" "$diff" | egrep '^[0-9]+$' &>/dev/null && (( diff < 200 )); then
  27     same=true
  28   fi
  29 fi
  30
  31 if $same; then
  32   rm -f ziva-tmp.jpg
  33 else
  34   mv ziva-tmp.jpg $(date +%F.%R).jpg
  35 fi