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|
#! /bin/bash
# This script tests: pnmtops pstopnm
# Also requires: pamtopnm gs pbmmake pnmshear pnmpad pnmcat
# Failure message
## This test fails when:
## (1) zlib was not linked.
## (2) ghostscript is not available.
tmpdir=${tmpdir:-/tmp}
# pstopnm does not use libnetpbm functions for output.
# Output is filtered through pamtopnm.
# Test 1. Should print: 1926073387 101484 five times
# *NOTE* Fifth iteration fails if pnmtops was compiled without zlib
# (flate compression) support.
test1_ps=${tmpdir}/testimg1.ps
for flag in "" "-ps" "-rle" "-ps -ascii" "-ps -flate"
do
pnmtops -nocenter -equalpixels -dpi 72 -noturn ${flag} testimg.ppm \
> ${test1_ps} && \
xysize1=`awk '/BoundingBox/ {print "-xsize="$4,"-ysize="$5}' \
${test1_ps}` && \
pstopnm -portrait -xborder=0 -yborder=0 $xysize1 -stdout -quiet \
${test1_ps} | pamtopnm | cksum
done
rm ${test1_ps}
# Test 2. Should print: 2918318199 62 seven times
# Test image designed to detect problems with run-length compression
#
g_pbm=${tmpdir}/g.pbm
t_pbm=${tmpdir}/t.pbm
grid_ps=${tmpdir}/testgrid.ps
pbmmake -g 2 2 > ${g_pbm}
pbmmake -g 8 4 | \
pnmshear 45 -noantialias -background=black | \
pnmpad -right 60 | \
pnmcat -tb -jright - ${g_pbm} > ${t_pbm} &&
for flag in "" "-rle" "-ps -rle -ascii" \
"-bitspersample=2 -rle" "-ps -bitspersample=4 -rle" \
"-bitspersample=8 -rle" "-ps -bitspersample=12 -rle -dict"
do
pnmtops -nocenter -equalpixels -dpi 72 -noturn ${flag} ${t_pbm} \
> ${grid_ps} && \
xysize2=`awk '/BoundingBox/ {print "-xsize="$4,"-ysize="$5}' \
${grid_ps}` && \
pstopnm -portrait -xborder=0 -yborder=0 $xysize2 -stdout \
-quiet ${grid_ps} -pbm | pamtopnm | cksum
done
rm ${grid_ps} ${g_pbm} ${t_pbm}
#Test 3. Should print: 1386192571 507420 three times
# *NOTE* Second iteration fails if pnmtops was compiled without zlib
# (flate compression) support.
#
# Special care is needed when conducting round-trips with multiple-image
# files as input.
# (1) pnmtops: -setpage is mandatory
# (2) awk: xy values are taken from the first "BoundingBox" encountered.
# Subsequent BoundingBox values are ignored.
# (3) pstopnm: input must be an ordinary file. Input from stdin
# (by pipe or input redirection: "< file" ) does not work.
#
test3_ps=${tmpdir}/testimg3.ps
for flag in "" "-ps" \
"-ps -bitspersample=12 -flate -rle -vmreclaim"
do
cat testimg.ppm testimg.ppm testimg.ppm testgrid.pbm testgrid.pbm | \
pnmtops -nocenter -equalpixels -dpi 72 -noturn -setpage ${flag} \
> ${test3_ps} &&
xysize3=`awk '/BoundingBox/ {print "-xsize="$4,"-ysize="$5 ; exit}' \
${test3_ps}` &&
pstopnm -portrait -xborder=0 -yborder=0 $xysize3 -stdout ${test3_ps} | \
pamtopnm | cksum
done
rm ${test3_ps}
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