#!/bin/sh
## ho: the GNU vanity tool ##

# Options
HODIR="$HOME/whore"
DEVICE="/dev/video0"
VIEWER="gpicview"
DELAY="0.1s"

# User friendliness
[ "$1" = "-h" ] && { echo "Usage: press 's' to save, convert and view your ugly fucking face. Use keys 1-8 for stupid tricks."; exit 0; }
for dep in mplayer convert xwininfo fuser $VIEWER; do
 [ ! -x "$(which $dep)" ] && { echo "Make sure mplayer, imagemagick, x11-utils, psmisc and $VIEWER are installed."; exit 1; }
done

# Init
mkdir -p "$HODIR"
TEMPDIR=$(mktemp -d)
cd $TEMPDIR
for f in $(ls $HODIR/shot*.jpg); do
 touch $(basename ${f%.*}.png)                            # Mplayer needs dummy files to continue screenshot numbering
done
trap 'rm $TEMPDIR/*; rmdir $TEMPDIR; exit' INT QUIT TERM  # Cleanup on exit

# Webcam interface
{ nice mplayer tv:// -tv driver=v4l2:width=640:height=480:device=$DEVICE:fps=30:contrast=35:brightness=35:hue=-35:saturation=17 -vf hue,mirror,screenshot,scale=-2:$(xwininfo -root | grep Height: | awk '{print $2}'); kill $$; }&

# Picture manager loop
while sleep $DELAY; do
 for pic in shot*.png; do                              # For all new shots
  if [ -s $pic ]; then                                 # if there are any
   until [ -z $(fuser $pic) ]; do sleep $DELAY; done   # wait for mplayer to finish writing
   JPEG=$HODIR/${pic%.*}.jpg
   convert $pic -interlace PLANE -quality 90 $JPEG     # convert to jpeg
   rm $pic                                             # remove png
   $VIEWER $JPEG                                       # show to the user
  fi
 done
done