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#!/bin/sh
#
# Make PNG files from regtests
# This file is part of LilyPond, the GNU music typesetter.
#
# Copyright (C) 2013--2020 Phil Holmes <[email protected]>
#
# LilyPond is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# LilyPond is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
# Usage: ./make-regtest-pngs.sh -j CPUs -o/-n
#
# where -j specifies the number of parallel processes to run
# (normally CPUs+1). e.g.:
#
# ./make-regtest-pngs.sh -j9
#
# -p uses GNU parallel with the given job count in order to also
# parallelize the conversion of PDF files to bitmaps when using -g
# or -d. No attempt is made to parallelize the bitmap comparisons
# since their memory requirements may be prohibitive.
#
# -o means build an old regtest set - the PNGs go in the old-regtest-results
# directory
#
# -n means build a new regtest set - the PNGs go in the new-regtest-results
# directory
#
# -c uses PDF and the poppler library via pdftocairo for generating
# bitmaps, simulating the output for Evince and other previewers
# using poppler. pdftocairo may be contained in the poppler-utils
# package.
#
# -r can be used for specifying a rendering resolution. This
# defaults to 101 for poppler and 300 for Ghostscript from PDF.
#
# -g uses Ghostscript for rendering a bitmap version from the PDF,
# simulating the output from printing PDF files on a GNU system, so
# use a resolution appropriate for print. Antialiasing is not enabled.
#
# -d changes the Ghostscript device used for creating PNG files
# (usually png16m for direct PNG creation and pngmono for printer simulation)
#
# if any filenames follow, those are the tests to run. In absence
# of any filenames, the contents of input/regression are used.
cpu_count=${CPU_COUNT:-1}
backend_opt='--png ${resolution:+=-dresolution=$resolution} ${gsdevice:+=-dpixmap-format=$gsdevice}'
resolution=
gsdevice=
use_parallel=n
while getopts "j:oncr:gpd:" opts; do
case $opts in j)
cpu_count=$OPTARG;;
o)
file_loc="old-regtest-results";;
c)
backend_opt="--pdf"
png_generate()
{
$1 pdftocairo -png -r ${resolution:-101} -q "$2"
};;
n)
file_loc="new-regtest-results"
do_compare="y";;
r)
resolution=$OPTARG;;
g)
backend_opt="--pdf"
png_generate()
{
$1 gs -sDEVICE=${gsdevice:-pngmono} \
-q -dNOPAUSE \
-r${resolution:-300} \
-dNOPLATFONTS \
-dAutoRotatePages=/None \
-dPrinted=false \
-dTextAlphaBits=1 \
-dGraphicsAlphaBits=1 \
-sOutputFile="${2%.pdf}-%d.png" \
"$2" \
-c quit
};;
p)
use_parallel=y;;
d)
gsdevice=$OPTARG;;
esac
done
shift $((OPTIND-1))
if [ -z "$file_loc" ]; then
echo "Must specify old (-o) or new (-n) regtest PNG creation on command line"
exit 1
fi
rm -rf $LILYPOND_BUILD_DIR/out-png-check/$file_loc
mkdir -p $LILYPOND_BUILD_DIR/out-png-check/$file_loc
OLDPWD="$PWD"
cd $LILYPOND_BUILD_DIR/out-png-check/$file_loc
if [ "$*" = "" ]
then
ls $LILYPOND_GIT/input/regression/*.ly > dir.txt
else
: > dir.txt
for i
do
case "$i" in /*)
echo "$i" >> dir.txt;;
*)
echo "$OLDPWD/$i" >> dir.txt
esac
done
fi
$LILYPOND_BUILD_DIR/out/bin/lilypond $(eval echo $backend_opt) --relocate \
-dinclude-settings=$LILYPOND_GIT/scripts/auxiliar/NoTagline.ly \
-djob-count=$cpu_count -dread-file-list "dir.txt"
if [ "$backend_opt" = "--pdf" ]
then
if [ $use_parallel = y ]
then
for i in *.pdf
do
png_generate echo $i
done | parallel -j $cpu_count
rm *.pdf
else
for i in *.pdf
do
png_generate "" $i && rm "$i"
done
fi
fi
rm -rf dir.txt
rm -rf *.log
if [ -n "$do_compare" ]; then
cd ..
rm -rf regtest-diffs
mkdir -p regtest-diffs
diff_count=0
for filename in new-regtest-results/*.png; do
trimFile=$(basename $filename)
if [ -e "old-regtest-results/$trimFile" ]; then
convert new-regtest-results/$trimFile -level 50% NewTest.png
convert old-regtest-results/$trimFile -level 50% OldTest.png
difference=$(compare -metric AE NewTest.png OldTest.png null: 2>&1 )
if [ $? -gt 0 ];then
difference=9999
fi
if [ $difference -gt 1 ];then
echo $trimFile": "$difference" differences"
compare -dissimilarity-threshold 1 \
new-regtest-results/$trimFile \
old-regtest-results/$trimFile regtest-diffs/$trimFile
convert regtest-diffs/$trimFile -trim regtest-diffs/$trimFile
diff_count=$(($diff_count+1))
fi
else
echo "old-regtest-results/"$trimFile" does not exist"
fi
done
rm -rf NewTest.png
rm -rf OldTest.png
echo $diff_count "differences found."
fi
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