Apply changes suggested by bug #11676 to wesnoth-optipng.
This introduces the advcomp dependency (http://advancemame.sourceforge.net/comp-readme.html) for running this script. I also made a few additional changes of my own in this revision. Beware Ivanovic. :-)
This commit is contained in:
Ignacio R. Morelle
parent
a64b21e658
commit
48310fdd69
1 changed files with 52 additions and 17 deletions
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@ -1,15 +1,19 @@
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#!/bin/sh
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#
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# Script to strip ICC profiles from all png images and to recompress them
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# afterwards via optipng
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# afterwards via optipng and advdef
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#
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# Run-time requirements: ImageMagick, OptiPNG
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# Run-time requirements: ImageMagick, OptiPNG, Advdef
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#
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# Copyright (C) 2004 by Crossbow/Miyo <miyo@iki.fi>
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# Copyright (C) 2005 by Isaac Clerencia <isaac@warp.es>
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# * (Ruby-ification and some features)
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# Copyright (C) 2008 by Ignacio Riquelme Morelle <shadowm2006@gmail.com>
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# * (De-ruby-ification and some other features)
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# and Fabio Pedretti <fabio.ped@libero.it>
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# * (Added advdef support)
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# * (Don't use .stripped files anymore)
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# * (Improved final statistics)
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#
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# Part of the Battle for Wesnoth Project <http://www.wesnoth.org>
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#
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@ -24,6 +28,7 @@
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current_file=""
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# Default optimization process nice
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opti_nice=19
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total_original_size=0
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total_savings_size=0
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total_savings_filecount=0
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@ -32,20 +37,25 @@ total_savings_filecount=0
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report_absent_tool()
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{
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echo "$1 is not present in PATH. $(basename ${0}) requires it in order to work properly."
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if [ -n "$2" ]; then
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echo "You can obtain $1 at <${2}>."
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fi
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exit -1
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}
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user_int()
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{
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if [ -n "${current_file}" ]; then
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rm -f ${current_file}.stripped
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#echo "Removing temp file ${current_file}.stripped..."
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rm -f ${current_file}.new
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#echo "Removing temp file ${current_file}.new..."
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rm -f ${current_file}.new
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fi
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if [ -z "$just_overall_statistics" ]; then
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echo "Stopped by user request."
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fi
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echo
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echo "Stopped by user request."
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echo
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print_statistics
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exit
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}
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@ -60,9 +70,13 @@ optimize_imgfile()
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echo "* processing ${1} (nice = ${2})..."
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nice -n $2 convert -strip ${1} ${1}.stripped
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nice -n $2 optipng -q -o5 -nb -nc -np ${1}.stripped -out ${1}.new
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rm -f ${1}.stripped
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nice -n $2 convert -strip ${1} ${1}.new
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nice -n $2 optipng -q -o5 -nb -nc -np ${1}.new
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# Sometimes lower compression level gives a better compression
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nice -n $2 advdef -z -4 ${1}.new > /dev/null
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nice -n $2 advdef -z -3 ${1}.new > /dev/null
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nice -n $2 advdef -z -2 ${1}.new > /dev/null
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nice -n $2 advdef -z -1 ${1}.new > /dev/null
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if [ -e ${1} ] && [ -e ${1}.new ]; then
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# Compare output size with original and print per-file statistics
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@ -71,6 +85,7 @@ optimize_imgfile()
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if [ "$old_png_size" -gt "$new_png_size" ]; then
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local png_savings_size=$((${old_png_size}-${new_png_size}))
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total_original_size=$((${total_original_size}+${old_png_size}))
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total_savings_size=$((${total_savings_size}+${png_savings_size}))
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total_savings_filecount=$((1+${total_savings_filecount}))
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mv -f ${1}.new ${1}
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@ -86,6 +101,19 @@ optimize_imgfile()
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echo -ne "\n"
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}
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print_statistics()
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{
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# Print overall statistics
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if [ "$total_savings_filecount" -gt 0 ]; then
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echo "Overall statistics (only for files with a smaller recompressed size):"
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echo " Original size: $((${total_original_size}/1024)) KB on ${total_savings_filecount} files"
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echo " Optimized size: $(((${total_original_size}-${total_savings_size})/1024)) KB"
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echo " Total saving: $((${total_savings_size}/1024)) KB = $((${total_savings_size}*100/${total_original_size}))% decrease"
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else
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echo "No files were recompressed."
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fi
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}
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####### ACTUAL SCRIPT #######
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# Parse command line parameters
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@ -108,8 +136,10 @@ Switches:
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--help / -h Displays this help text.
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This utility requires OptiPNG and ImageMagick's convert utility to be
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installed and available in PATH.
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This tool requires OptiPNG (http://www.cs.toronto.edu/~cosmin/pngtech/optipng/),
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Advdef (http://advancemame.sourceforge.net/comp-readme.html) and ImageMagick's
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convert utility (http://www.imagemagick.org/script/convert.php) to be installed
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and available in PATH.
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EOSTREAM
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exit 0
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fi
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@ -117,9 +147,14 @@ EOSTREAM
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done
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# Probe optipng
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nice -n $opti_nice optipng -v 2> /dev/null 1> /dev/null || report_absent_tool optipng
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nice -n $opti_nice optipng -v 2> /dev/null 1> /dev/null ||
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report_absent_tool optipng 'http://www.cs.toronto.edu/~cosmin/pngtech/optipng/'
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# Probe IM's convert
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nice -n $opti_nice convert --help 2> /dev/null 1> /dev/null || report_absent_tool convert
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nice -n $opti_nice convert --help 2> /dev/null 1> /dev/null ||
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report_absent_tool convert 'http://www.imagemagick.org'
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# Probe advdef
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nice -n $opti_nice advdef --help 2> /dev/null 1> /dev/null ||
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report_absent_tool advdef 'http://advancemame.sourceforge.net/comp-readme.html'
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# Set-up a trap to avoid leaving orphan tempfiles behind.
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trap user_int HUP INT TERM
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@ -129,6 +164,6 @@ for f in $filelist; do
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optimize_imgfile $f $opti_nice
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done
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# Print overall statistics
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echo "*** Total saved: $((${total_savings_size}/1024)) KB on ${total_savings_filecount} files"
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print_statistics
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exit 0
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