#
#--- cgscreencap.sh - Screencap for movies until xvidcap is fixed
#
#    Uses xwd (xorg-x11-apps) netpbm
#
# Usage:   cgscreencap.sh sec/frame
#
# Example:  cgscreencap.sh  0.2  temp_01    # ~5 frames/sec
# Copyright: capgadget 2006
# License GPL  v2
#

echo "Starting $0 `date`"

if [ -z $CAPTURE_DIR ]
then
  echo "Please define CAPTURE_DIR   e.g. export CAPTURE_DIR=/usr/local/capture"
  echo "Screencaps will be in this directory"
  exit
fi

. timediff.sh


SCREENCAP_DIR=$CAPTURE_DIR/`whoami`.cgscreencap/$2

if [ ! -d $SCREENCAP_DIR ]
then
  echo "$SCREENCAP_DIR not found.  Creating $SCREENCAP_DIR"
  mkdir $SCREENCAP_DIR
else
  echo "$SCREENCAP_DIR found"
fi

#rm $SCREENCAP_DIR/cgscreencap.*.xwd


#
#--- Get screen ID
#

echo "Mouse over to screen to capture "

xwinid=`xwininfo|grep "Window id:"|awk '{print $4}'`
echo "Window ID = $xwinid"

nframes=0
crank_turns=0
max_cranks=10
time1=`date +%s.%N`
fps="NA"
while [ 1=1 ]
do

  nowtime=`date +%Y%m%d%H%M%S%N`
  xwd -silent -id $xwinid |xwdtopnm|pnmtojpeg> $SCREENCAP_DIR/$2.cgscreencap.$nowtime.jpg &
#  xwd -silent -id $xwinid |xwdtopnm|pnmtojpeg> $SCREENCAP_DIR/$2.cgscreencap.$nowtime.jpg
  nframes=`expr $nframes + 1`
  crank_turns=`expr $crank_turns + 1`
  if [ $crank_turns -eq $max_cranks ]
  then
    time2=`date +%s.%N`
    t1=`timediff $time1 $time2`
    fps=`echo "9 $t1 $crank_turns"|bc /usr/local/bc/divfloat.bc`
    crank_turns=0
    time1=`date +%s.%N`
    echo "$2 $nframes $fps"
  fi


if [ -f $SCREENCAP_DIR/stop ]
then
  echo "$SCREENCAP_DIR/stop found"
  rm -vf $SCREENCAP_DIR/stop
  exit
fi

# Add pause loop here

  sleep $1
done
exit

#########################################
##### EXAMPLE MAKE MOVIE FROM JPEGS #####
#########################################
#
#---- mkmovie.xvid.sh
#

in_type=$1
out_pfx=$2
outfps=$3

echo "in_type=$1 out_pfx=$2 outfps=$3"
mencoder "mf://*.$in_type" -mf fps=$outfps -o $out_pfx.f$outfps.xvid -ovc xvid -xvidencopts bitrate=1200 #-oac mp3lame -lameopts cbr:br=128

ls -l $out_pfx.f$outfps.xvid