TOOLS/psnr-video.sh

   1 #!/bin/bash
   2 # Helper script to ease comparing the PSNR between two video files
   3 # Copyleft 2005 by Matthias Wieser
   4 # Copyleft 2005 by Ivo
   5 # This file comes under GPL, see http://www.gnu.org/copyleft/gpl.html for more
   6 # information on its licensing.
   7
   8 warning_frame_number () {
   9         echo "Files have differing numbers of frames!"
  10         echo "$FILE1 has `ls -1 ${TEMPDIR}/FILE1/*ppm | wc -l` frames,"
  11         echo "$FILE2 has `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` frames."
  12         echo "Processing the first `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` frames."
  13 }
  14
  15
  16 TEMPDIR="/tmp/psnr_video"
  17 WORKDIR=`pwd`
  18 OUTFILE=psnr.dat
  19 ERRFILE=errorsum.del
  20
  21 exit=0
  22 if [[ `which pnmpsnr 2> /dev/null` = "" ]]
  23 then
  24         echo
  25         echo "To use this script you have to install the program \"pnmpsnr\" which is"
  26         echo " included in the netpbm package."
  27         echo
  28         exit=1
  29 fi
  30
  31 if [[ `which bc 2> /dev/null` = "" ]]
  32 then
  33         echo
  34         echo "To use this script you have to install the GNU command line calculator \"bc\"."
  35         echo
  36         exit=1
  37 fi
  38
  39 if [ $# -le 1 ]; then
  40    echo
  41    echo "Usage: `basename $0` <file1> <file2> [<frames>] [<options1>] [<options2>]"
  42    echo
  43    echo " <file1> and <file2> are the files for which the PSNR should be calculated."
  44    echo " [<frames>]          is the number of frames to process, starting from frame 1."
  45    echo " [<options1>]        are additional MPlayer options for <file1>."
  46    echo " [<options2>]        are additional MPlayer options for <file2>."
  47    echo
  48    echo " Be aware that `basename $0` needs a lot of temporary space inside /tmp/."
  49    echo
  50    echo "Example:"
  51    echo "        ./`basename $0` ./orig.avi ./test.avi 250 \"\" \"-vf pp=ac\""
  52    echo
  53
  54    exit=1
  55 fi
  56
  57 if [ "$exit" -eq 1 ]; then
  58         exit 1
  59 fi
  60
  61 FILE1=$1
  62 FILE2=$2
  63
  64 LastFrame=-1
  65 if [ $# -ge 3 ]; then
  66         LastFrame=$3
  67         echo
  68         echo "Will process $LastFrame frames."
  69 fi
  70
  71 if [ $# -ge 4 ]; then
  72         FILE1_Options=$4
  73         echo "MPlayer options for ${FILE1}: $FILE1_Options"
  74 fi
  75
  76 if [ $# -ge 5 ]; then
  77         FILE2_Options=$5
  78         echo "MPlayer options for ${FILE2}: $FILE2_Options"
  79 fi
  80
  81
  82 mkdir -p ${TEMPDIR}/FILE1
  83 mkdir -p ${TEMPDIR}/FILE2
  84
  85 ###  File 1
  86 echo
  87 echo "############## $FILE1 #################"
  88
  89 cd ${TEMPDIR}/FILE1
  90
  91 rm -f *ppm
  92 rm -f *del
  93
  94 if [ $LastFrame -ge 0 ]; then
  95         mplayer $FILE1_Options -frames $LastFrame -nosound -vo pnm ${WORKDIR}/$FILE1 > /dev/null
  96 else
  97         mplayer $FILE1_Options -nosound -vo pnm ${WORKDIR}/$FILE1 > /dev/null
  98 fi
  99
 100 ###  File 2
 101 echo
 102 echo "############## $FILE2 #################"
 103
 104 cd ${TEMPDIR}/FILE2
 105
 106 rm -f *ppm
 107
 108 if [ $LastFrame -ge 0 ]; then
 109         mplayer $FILE2_Options -frames $LastFrame -nosound -vo pnm ${WORKDIR}/$FILE2 > /dev/null
 110 else
 111         mplayer $FILE2_Options -nosound -vo pnm ${WORKDIR}/$FILE2 > /dev/null
 112 fi
 113
 114
 115 ###  PSNR
 116
 117 echo
 118 echo "############## PSNR Calculation #################"
 119
 120 if [[ `ls -1 ${TEMPDIR}/FILE1/*ppm | wc -l` = `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` ]]
 121 then
 122         echo
 123 else
 124         warning_frame_number
 125         echo
 126 fi
 127
 128
 129 cd ${TEMPDIR}/FILE2
 130 #rm ../$OUTFILE
 131 echo "File;Y;Cb;Cr" > ../$OUTFILE
 132 echo "0" > $ERRFILE
 133 i=0
 134 for FILE in `ls -1 *.ppm`
 135         do
 136         echo $FILE
 137                 echo -n "$FILE" >> ../$OUTFILE
 138                 echo -n ";"     >> ../$OUTFILE
 139
 140         YCBCR=`pnmpsnr ../FILE1/$FILE $FILE 2>&1 | tail -n 3 | cut -f 3 -d ':' | \
 141             ( read Y X; read CB X; read CR X; echo "$Y;$CB;$CR;")`
 142          Y=`echo $YCBCR | cut -f 1 -d ';'`
 143         CB=`echo $YCBCR | cut -f 2 -d ';'`
 144         CR=`echo $YCBCR | cut -f 3 -d ';'`
 145         echo $YCBCR >> ../$OUTFILE
 146
 147         ALL=`echo "(-10)*l((e(-$Y/10*l(10))+e(-$CB/10*l(10))/4+e(-$CR/10*l(10))/4)/1.5)/l(10)" | bc -l`
 148         echo "$ALL" >> ../$OUTFILE
 149         ERROR=`echo "scale=30; (e(-1*$Y/10*l(10))+e(-1*$CB/10*l(10))/4+e(-1*$CR/10*l(10))/4)/1.5" | bc -l`
 150         ERRORSUM=`cat $ERRFILE`
 151         echo `echo "scale=30; $ERROR + $ERRORSUM" | bc -l` > $ERRFILE
 152
 153         i=$(($i+1))
 154         if [[ $i = $LastFrame ]]
 155         then
 156                 break
 157         fi
 158 done
 159
 160 ERRORSUM=`cat $ERRFILE`
 161 PSNR=`echo "-10*l($ERRORSUM/$i)/l(10)" | bc -l`
 162 echo "PSNR:;$PSNR" >> ../$OUTFILE
 163
 164 cd ..
 165 mv $OUTFILE ${WORKDIR}/
 166
 167 if [[ `ls -1 ${TEMPDIR}/FILE1/*ppm | wc -l` = `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` ]]
 168 then
 169         echo
 170 else
 171         warning_frame_number
 172         echo
 173 fi
 174
 175 cd ..
 176 rm -r ${TEMPDIR}
 177
 178 echo "Created ${WORKDIR}/$OUTFILE"
 179 echo
 180