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author | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2023-06-28 17:29:32 +0000 |
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committer | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2023-06-28 17:29:32 +0000 |
commit | 23ce26f64c34e30951ad9ade2151552ed77e7357 (patch) | |
tree | d73b31a0c2f7c7be4a69f8a8e84e00dd39c432b5 /test/lps-roundtrip.test | |
parent | 1b6e51a266008348ad93ed8b6ac9ec91b5024fea (diff) | |
download | netpbm-mirror-23ce26f64c34e30951ad9ade2151552ed77e7357.tar.gz netpbm-mirror-23ce26f64c34e30951ad9ade2151552ed77e7357.tar.xz netpbm-mirror-23ce26f64c34e30951ad9ade2151552ed77e7357.zip |
promote Advanced to Stable
git-svn-id: http://svn.code.sf.net/p/netpbm/code/stable@4558 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'test/lps-roundtrip.test')
-rwxr-xr-x | test/lps-roundtrip.test | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/test/lps-roundtrip.test b/test/lps-roundtrip.test new file mode 100755 index 00000000..24076ef1 --- /dev/null +++ b/test/lps-roundtrip.test @@ -0,0 +1,33 @@ +#! /bin/sh +# This script tests: pbmtolps pstopnm +# Also requires: gs pamdepth pamscale pnmcrop pnmpsnr pamfile + +# The ordinary round-trip does not work because of the way ghostscript +# renders: a line is considered wider than a single pixel and all pixels +# it touches are set to black if the output is PBM. To work around this, +# we tell pstopnm to output PGM at a high resolution (=large dpi value). + +tmpdir=${tmpdir:-/tmp} +test_pgm=${tmpdir}/test.pgm +test_ps=${tmpdir}/test.ps + +echo "Test 1. Should print match" + +xysize=$(pamfile -size testgrid.pbm | awk '{print "-xsize="$1,"-ysize="$2}') +pamdepth 255 testgrid.pbm > ${test_pgm} + +pbmtolps -dpi 72 testgrid.pbm | tee ${test_ps} | \ + pstopnm -dpi $((72*12)) -stdout -pgm | \ + pnmcrop -white | pamscale ${xysize} | \ + pnmpsnr -target=30 - ${test_pgm} + + # ghostscript version 8.71: pnmpsnr lumina 33.14dB + + +echo "Test 2. Should print 0" + +pbmtolps -dpi 72 < testgrid.pbm | sed 's/noname/testgrid.pbm/' | \ + cmp -s ${test_ps} - + echo $? + +rm ${test_pgm} ${test_ps} |