Run gmic on various files and report performance

gmic-perf.sh

#!/bin/bash

#
# TODO: use time from `time` command, not from 'end-start'
#

if [ -z "$(which exiv2)" ] ; then
        echo "ERROR: exiv2 required. On Ubuntu, install with 'sudo apt-get install exiv2'"
        exit 1
fi

if [ -n "$(which lsb_release)" ] ; then
        RELEASE="$(lsb_release -d)"
else
        RELEASE=""
fi

echo "#csv,release,resolution,input,output,hostname,start,end,time"

while [ -n "$1" ] ; do
        echo "------------------------------------------------------------"
        echo "Starting GMIC with file $1 at $(date)"
        echo "------------------------------------------------------------"
        OUTPUT="denoised-$(hostname)-$1"
        test -e $OUTPUT && rm -fv $OUTPUT
        start=$(date +%s)
        time gmic $1 -denoise 30,10 -o $OUTPUT
        end=$(date +%s)
        echo ""
        echo "Finished at $(date)"
        echo ""
        IMAGE_SIZE=$(exiv2 $1 | grep "^Image size" | cut  -d : -f 2)
        echo "csv,$RELEASE,$IMAGE_SIZE,$1,$OUTPUT,$(hostname),$start,$end,$(($end-$start))"
        shift
done