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1ef2441 Mar 21, 2015
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@acabal @detached
executable file 129 lines (96 sloc) 3.35 KB
#!/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: ${1}\n" 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" -o "$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" -a "${imageMimeType}" != "image/png" ]; then
die "Cover image isn't a jpg or png image."
fi
oggMimeType=$(file -b --mime-type "${outputFile}")
if [ "${oggMimeType}" != "audio/x-vorbis+ogg" -a "${oggMimeType}" != "audio/ogg" ]; then
die "Input file isn't an ogg file."
fi
#Export existing comments to file
commentsPath="$(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}"