eccodes/tests/jpeg.sh

#!/bin/sh
# Copyright 2005-2015 ECMWF.
#
# This software is licensed under the terms of the Apache Licence Version 2.0
# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
# 
# In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
# virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
#

. ./include.sh

REDIRECT=/dev/null
BLACKLIST="totalLength,section5Length,section7Length,dataRepresentationTemplateNumber,typeOfPacking"

infile=${data_dir}/jpeg.grib2

rm -f $infile.1 $infile.2 || true

${tools_dir}grib_set -s packingType=grid_simple $infile $infile.1
${tools_dir}grib_compare -P -b $BLACKLIST,typeOfCompressionUsed,targetCompressionRatio $infile $infile.1 > $REDIRECT
${tools_dir}grib_set -s packingType=grid_jpeg $infile.1 $infile.2
${tools_dir}grib_compare -P -b $BLACKLIST $infile.1 $infile.2 > $REDIRECT

templateNumber=`${tools_dir}grib_get -p dataRepresentationTemplateNumber $infile.2`

if [ $templateNumber -ne 40 ] 
then 
  echo dataRepresentationTemplateNumber=$templateNumber
  exit 1
fi

rm -f $infile.1 $infile.2 || true

infile=${data_dir}/reduced_latlon_surface.grib2

${tools_dir}grib_set -s packingType=grid_jpeg $infile $infile.1
${tools_dir}grib_compare -P -b $BLACKLIST $infile $infile.1 > $REDIRECT
${tools_dir}grib_set -s packingType=grid_simple $infile.1 $infile.2
${tools_dir}grib_compare -P -b $BLACKLIST,typeOfCompressionUsed,targetCompressionRatio $infile.1 $infile.2  > $REDIRECT

res1=`${tools_dir}grib_get '-F%1.2f' -p min,max,avg $infile`
res2=`${tools_dir}grib_get '-F%1.2f' -p min,max,avg $infile.1`
res3=`${tools_dir}grib_get '-F%1.2f' -p min,max,avg $infile.2`
[ "$res1" = "$res2" ]
[ "$res1" = "$res3" ]

# GRIB-564 nearest 4 neighbours with JPEG packing
res=`${tools_dir}grib_get -l 0,50 $infile.1`
[ "$res" = "2.47244 2.47244 2.5115 2.51931 " ]

rm -f $infile.1 $infile.2 || true