test/bmp-roundtrip.test


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#! /bin/bash
# This script tests: bmptopnm ppmtobmp
# Also requires: pamchannel pamtopnm pamseq

tmpdir=${tmpdir:-/tmp}

# Test 1.  Should print 2425386270 41 four times

echo PBM

for mode in "" "-bpp=1" "-windows" "-os2"
  do
  ppmtobmp ${mode} testgrid.pbm | bmptopnm | cksum
  done

# Test 2.  Should print 1926073387 101484 four times

echo PPM

for mode in "" "-bpp=24" "-windows" "-os2"
  do
  ppmtobmp ${mode} testimg.ppm | bmptopnm | cksum
  done

# Test 3.  Should print 1571496937 33838 nine times

echo PGM

red_pgm=${tmpdir}/red.pgm
mapfile_pgm=${tmpdir}/mapfile.pgm
pamseq -tupletype="GRAYSCALE" 1 255 > ${mapfile_pgm}

pamchannel -infile=testimg.ppm -tupletype="GRAYSCALE" 0 | \
    pamtopnm | tee ${red_pgm} | cksum

for mode in "" "-bpp=8" "-windows" "-os2"
  do
  ppmtobmp ${mode} ${red_pgm} | bmptopnm | cksum
  ppmtobmp ${mode} -mapfile=${mapfile_pgm} ${red_pgm} | bmptopnm | cksum
  done

rm ${mapfile_pgm} ${red_pgm}