76 lines
1.9 KiB
Bash
Executable File
76 lines
1.9 KiB
Bash
Executable File
#!/bin/sh
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set -euf
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dirminsize () {
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cleanup() {
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trap 'exit' INT HUP QUIT TERM EXIT
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rm -f "$tmpjxl7" "$tmpjxl8" "$tmpjxl9" "$tmpwebp"
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kill 0
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}
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tmpwebp=$(mktemp -u -t webp2jxl_XXXX.webp)
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tmpjxl7=$(mktemp -u -t webp2jxl_XXXX.jxl)
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tmpjxl8=$(mktemp -u -t webp2jxl_XXXX.jxl)
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tmpjxl9=$(mktemp -u -t webp2jxl_XXXX.jxl)
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trap 'cleanup' INT HUP QUIT TERM EXIT
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ext="webp,png,jxl" depth="-maxdepth 1"
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while getopts ":e:r" OPT; do
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case "$OPT" in
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e) ext="$OPTARG" ;;
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r) depth="" ;;
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*) exit 1 ;;
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esac
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done
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shift $((OPTIND - 1))
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exts=$(awk -F ',' -v OFS=' -o ' '{ for(i=1; i<=NF; i++) $i="-iname *." $i; print}' <<-EOF
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$ext
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EOF
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)
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while IFS= read -r f; do
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[ -z "$f" ] && continue
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echo "$f"
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vips webpsave "$f" "$tmpwebp" --min-size --lossless &
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vips jxlsave "$f" "$tmpjxl7" --lossless --effort 7 &
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vips jxlsave "$f" "$tmpjxl8" --lossless --effort 8 &
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vips jxlsave "$f" "$tmpjxl9" --lossless --effort 9 &
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wait
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read -r _ outfile <<-EOF
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$(wc -c "$f" "$tmpwebp" "$tmpjxl7" "$tmpjxl8" "$tmpjxl9" | sort -n)
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EOF
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mv "$outfile" "${f%.*}.${outfile##*.}" || continue
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[ "${outfile##*.}" != "${f##*.}" ] && rm "$f" # remove if there are 2
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done <<-EOF
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$(set -f; find "${1:-.}" -type f $depth $exts)
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EOF
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}
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jxld2q() {
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for n; do
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case "$n" in
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*.*) i=d; d="$n" ;;
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*) i=q; q="$n" ;;
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esac
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[ "$i" = q ] && d="$(printf '0.1 + (100 - %s) * 0.09\n' "$q" | bc)"
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[ "$i" = d ] && q="$(printf '100 - ((%s - 0.1) / 0.09)\n' "$d" | bc)"
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echo "distance = $d | quality = $q"
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done
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}
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cmd=$1; shift
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case "$cmd" in
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dirminsize) dirminsize "$@" ;;
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jxld2q) jxld2q "$@" ;;
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help|-h) cat >&2 <<-EOF
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available commands:
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* dirminsize - tries to losslessly squeeze out as much size as possible from every file
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in the directory by converting to webp/jxl with various efforts
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options: -r (recursive) -e <ext1,ext2,...>
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* jxld2q $@ - convert to/from jxl distance/quality for each arg
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EOF
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;;
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*) errecho "wrong command. use help or -h for help" ;;
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esac
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