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#! /bin/bash
# This script tests: pnmtotiffcmyk tifftopnm
# Also requires: pnmpsnr
# Failure message
## If this test fails, the cause may be a problem in the TIFF library.
tmpdir=${tmpdir:-/tmp}
tartan_ppm=${tmpdir}/tartan.ppm
output_ppm=${tmpdir}/output.ppm
output_tiff=${tmpdir}/output.tiff
# Note that color images cannot be tested by the roundtrip method
# because of approximations incurred by converting from RGB to CMYK
pnmtotiffcmyk testimg.ppm > ${output_tiff} && \
tifftopnm -headerdump -byrow ${output_tiff} | \
pnmpsnr -machine - testimg.ppm | \
awk '{printf("%3d %1d %1d %1d\n",NF,$1>45.0,$2>59.5,$3>56.5)}'
# Note that "-rowsperstrip=1" does not work
pnmtotiffcmyk -rowsperstrip 1 -lsb2msb testimg.ppm > ${output_tiff} && \
tifftopnm -respectfillorder -byrow ${output_tiff} | \
pnmpsnr -machine - testimg.ppm | \
awk '{printf("%3d %1d %1d %1d\n",NF,$1>45.0,$2>59.5,$3>56.5)}'
pnmtotiffcmyk -packbits testimg.ppm > ${output_tiff} && \
tifftopnm -byrow ${output_tiff} | \
pnmpsnr -machine - testimg.ppm | \
awk '{printf("%3d %1d %1d %1d\n",NF,$1>45.0,$2>59.5,$3>56.5)}'
pnmtotiffcmyk -lzw testimg.ppm > ${output_tiff} && \
tifftopnm -byrow ${output_tiff} | \
pnmpsnr -machine - testimg.ppm | \
awk '{printf("%3d %1d %1d %1d\n",NF,$1>45.0,$2>59.5,$3>56.5)}'
pnmtotiffcmyk -lzw -predictor 2 testimg.ppm > ${output_tiff} && \
tifftopnm -respectfillorder -byrow ${output_tiff} | \
pnmpsnr -machine - testimg.ppm | \
awk '{printf("%3d %1d %1d %1d\n",NF,$1>45.0,$2>59.5,$3>56.5)}'
rm ${output_tiff}
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