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#! /bin/bash
# This script tests: pnmtops pstopnm
# Also requires: pnmtopnm pamtopnm gs pbmmake pnmshear pnmpad pnmcat
alias pnmtops="${PBM_TESTPREFIX}pnmtops"
alias pstopnm="${PBM_TESTPREFIX}pstopnm"
alias pbmmake="${PBM_BINPREFIX}pbmmake"
alias pnmcat="${PBM_BINPREFIX}pnmcat"
alias pnmpad="${PBM_BINPREFIX}pnmpad"
alias pnmshear="${PBM_BINPREFIX}pnmshear"
alias pnmtopnm="${PBM_BINPREFIX}pnmtopnm"
shopt -s expand_aliases
# Failure message
## This test fails when:
## (1) zlib was not linked.
## (2) ghostscript is not available.
# pstopnm does not use libnetpbm functions for output.
# Output is filtered through pnmtopnm.
# Test 1. Should print: 1926073387 101484 five times
# *NOTE* Fifth iteration fails if pnmtops was compiled without zlib
# (flate compression) support.
for flag in "" "-ps" "-rle" "-ps -ascii" "-ps -flate"
do
pnmtops -nocenter -equalpixels -dpi 72 -noturn \
${flag} testimg.ppm \
> ${tmpdir}/testimg.ps
xysize1=`awk '/BoundingBox/ {print "-xsize="$4,"-ysize="$5}' \
${tmpdir}/testimg.ps`
pstopnm -portrait -xborder=0 -yborder=0 $xysize1 -stdout \
-quiet ${tmpdir}/testimg.ps | \
pnmtopnm | cksum
done
# Test 2. Should print: 2918318199 62 seven times
# Test image designed to detect problems with run-length compression
#
pbmmake -g 2 2 > ${tmpdir}/g.pbm
pbmmake -g 8 4 | \
pnmshear 45 -noantialias -background=black | \
pnmpad -right 60 | \
pnmcat -tb -jright - ${tmpdir}/g.pbm > ${tmpdir}/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} ${tmpdir}/t.pbm > ${tmpdir}/testgrid.ps &&
xysize2=`awk '/BoundingBox/ {print "-xsize="$4,"-ysize="$5}' \
${tmpdir}/testgrid.ps`
pstopnm -portrait -xborder=0 -yborder=0 $xysize2 -stdout \
-quiet ${tmpdir}/testgrid.ps -pbm | \
pnmtopnm | cksum
done
#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.
#
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} > ${tmpdir}/testimg5.ps
xysize3=`awk '/BoundingBox/ {print "-xsize="$4,"-ysize="$5 ; exit}' \
${tmpdir}/testimg5.ps`
pstopnm -portrait -xborder=0 -yborder=0 $xysize3 \
-stdout ${tmpdir}/testimg5.ps | \
pnmtopnm | cksum
done
rm ${tmpdir}/testgrid.ps ${tmpdir}/testimg.ps ${tmpdir}/testimg5.ps \
${tmpdir}/t.pbm
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