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#!/bin/sh | |
usage(){ | |
fmt <<EOF | |
DESCRIPTION | |
Add cover art to an OGG file. | |
Adapted from mussync-tools by biapy: https://github.com/biapy/howto.biapy.com/blob/master/various/mussync-tools | |
USAGE | |
ogg-cover-art [COVER-FILENAME] OGG-FILENAME | |
Add cover art to OGG-FILENAME. If COVER-FILENAME is not specified, | |
use cover.jpg, cover.jpeg, or cover.png located in the same folder | |
as OGG-FILENAME. | |
EOF | |
exit | |
} | |
die(){ printf "Error: %s\n" "${1}" 1>&2; exit 1; } | |
require(){ command -v "${1}" > /dev/null 2>&1 || { suggestion=""; if [ ! -z "$2" ]; then suggestion=" $2"; fi; die "$1 is not installed.${suggestion}"; } } | |
if [ $# -eq 1 ]; then if [ "$1" = "--help" ] || [ "$1" = "-h" ]; then usage; fi fi | |
# End boilerplate | |
require "vorbiscomment" "Try: apt-get install vorbis-tools" | |
if [ $# -eq 0 ]; then | |
usage | |
fi | |
outputFile="" | |
imagePath="" | |
if [ $# -eq 1 ]; then | |
outputFile="$1" | |
dirName=$(dirname "$1") | |
imagePath="${dirName}/cover.jpg" | |
if [ ! -f "${imagePath}" ]; then | |
imagePath="${dirName}/cover.jpeg" | |
if [ ! -f "${imagePath}" ]; then | |
imagePath="${dirName}/cover.png" | |
if [ ! -f "${imagePath}" ]; then | |
die "Couldn't find a cover image in ${dirName}." | |
fi | |
fi | |
fi | |
fi | |
if [ $# -eq 2 ]; then | |
outputFile="$2" | |
imagePath="$1" | |
fi | |
if [ ! -f "${outputFile}" ]; then | |
die "Couldn't find ogg file." | |
fi | |
if [ ! -f "${imagePath}" ]; then | |
die "Couldn't find cover image." | |
fi | |
imageMimeType=$(file -b --mime-type "${imagePath}") | |
if [ "${imageMimeType}" != "image/jpeg" ] && [ "${imageMimeType}" != "image/png" ]; then | |
die "Cover image isn't a jpg or png image." | |
fi | |
oggMimeType=$(file -b --mime-type "${outputFile}") | |
if [ "${oggMimeType}" != "audio/x-vorbis+ogg" ] && [ "${oggMimeType}" != "audio/ogg" ]; then | |
die "Input file isn't an ogg file." | |
fi | |
# Export existing comments to file | |
commentsPath="$(mktemp -t "tmp.XXXXXXXXXX")" | |
vorbiscomment --list --raw "${outputFile}" > "${commentsPath}" | |
# Remove existing images | |
sed -i -e '/^metadata_block_picture/d' "${commentsPath}" | |
# Insert cover image from file | |
# metadata_block_picture format | |
# See: https://xiph.org/flac/format.html# metadata_block_picture | |
imageWithHeader="$(mktemp -t "tmp.XXXXXXXXXX")" | |
description="" | |
# Reset cache file | |
echo -n "" > "${imageWithHeader}" | |
# Picture type <32> | |
printf "0: %.8x" 3 | xxd -r -g0 >> "${imageWithHeader}" | |
# Mime type length <32> | |
printf "0: %.8x" $(echo -n "${imageMimeType}" | wc -c) | xxd -r -g0 >> "${imageWithHeader}" | |
# Mime type (n * 8) | |
echo -n "${imageMimeType}" >> "${imageWithHeader}" | |
# Description length <32> | |
printf "0: %.8x" $(echo -n "${description}" | wc -c) | xxd -r -g0 >> "${imageWithHeader}" | |
# Description (n * 8) | |
echo -n "${description}" >> "${imageWithHeader}" | |
# Picture with <32> | |
printf "0: %.8x" 0 | xxd -r -g0 >> "${imageWithHeader}" | |
# Picture height <32> | |
printf "0: %.8x" 0 | xxd -r -g0 >> "${imageWithHeader}" | |
# Picture color depth <32> | |
printf "0: %.8x" 0 | xxd -r -g0 >> "${imageWithHeader}" | |
# Picture color count <32> | |
printf "0: %.8x" 0 | xxd -r -g0 >> "${imageWithHeader}" | |
# Image file size <32> | |
printf "0: %.8x" $(wc -c "${imagePath}" | cut --delimiter=' ' --fields=1) | xxd -r -g0 >> "${imageWithHeader}" | |
# Image file | |
cat "${imagePath}" >> "${imageWithHeader}" | |
echo "metadata_block_picture=$(base64 --wrap=0 < "${imageWithHeader}")" >> "${commentsPath}" | |
# Update vorbis file comments | |
vorbiscomment --write --raw --commentfile "${commentsPath}" "${outputFile}" | |
# Delete temp files | |
rm "${imageWithHeader}" | |
rm "${commentsPath}" |