134 lines
4.5 KiB
Bash
Executable File
134 lines
4.5 KiB
Bash
Executable File
#!/bin/sh
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set -euf
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EXT="flac" # default
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NL="
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"
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err() { echo "$*" >&2 ; }
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die() { err "$*" && exit 1 ; }
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clean() {
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trap 'exit' INT HUP EXIT
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rm -f "$PICTURE"
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}
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# wrapper to grab a specific tag from flac/opus/mp3
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grabtag() {
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case ${1##*.} in
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flac) metaflac --show-tag="$2" "$1" | cut -d '=' -f 2- ;;
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opus) opusinfo "$1" | awk -v RS='\n\t' -v FS='=' -v OFS='' "/^$2=/"'{$1=""; print $0}' ;;
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mp3)
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case "$2" in
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ARTIST) id3 -q '%_a' "$1" ;;
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ALBUM) id3 -q '%_A' "$1" ;;
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TRACKNUMBER) id3 -q '%_###T' "$1" ;;
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TITLE) id3 -q '%_t' "$1" ;;
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ALBUMARTIST) id3 -2 -q "%|%{TPE2}||%{TXXX:ALBUM ARTIST}|?" "$1" ;;
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*) printf 'unknown' ;;
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esac
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;;
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*) die 'unknown tag used for mp3'
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esac
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}
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# grab track info, make tracknumber 3-padded just in case for long albums
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# (no album has > 999 tracks. I think.)
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grabinfo() {
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DURATION="$(ffprobe -v quiet -of csv=p=0 -show_entries format=duration "$1")"
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ARTIST="$(grabtag "$1" ARTIST)"
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ALBUM="$(grabtag "$1" ALBUM)"
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TITLE="$(grabtag "$1" TITLE)"
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TRACKNUMBER="$(printf '%03d' "$(grabtag "$1" TRACKNUMBER)")"
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}
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ffconv() {
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IFS=" "
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ffmpeg ${VERBOSE--loglevel error} -y -loop 1 -framerate 4 -f image2 -i "$1" ${FULLALBUM:+-safe 0 -f concat} -i "$2" \
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-t "${TOTALTIME:-$DURATION}" \
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-pix_fmt yuv420p \
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${acopy:--c:a libopus -b:a 256k} \
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-r 4 \
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-b:v 500k \
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-c:v libvpx \
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-cpu-used -5 \
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-deadline realtime \
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"$3"
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err "Successfully converted $2"
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}
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SONG="" FULLALBUM="" AUTOPIC=""
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OUTDIR="/tmp/albumsetup/${PWD##*/}"
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while getopts :aovd:e:p:s: OPT; do
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case "$OPT" in
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a) AUTOPIC=1 ;; # autopic
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o) FULLALBUM=1 ;;
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v) VERBOSE="" ;; # can use ${var-rep} for this
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d) cd "$OPTARG" && OUTDIR="${OUTDIR%/*}/${PWD##*/}" ;;
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e) EXT="$OPTARG" ;;
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p) tmpimg="$OPTARG" ;;
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s) SONG="$OPTARG" && OUTDIR="${OUTDIR%/*}" ;; # individual song
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*) die "albumsetup: invalid option: -$OPTARG" ;;
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esac
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done
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shift "$((OPTIND - 1))"
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[ ! -f "$tmpimg" ] && die "Image not specified! This is required even with AUTOPIC!"
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[ "$AUTOPIC" ] && [ "$SONG" ] && die "AUTOPIC doesn't make sense in SONG mode!"
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[ "$AUTOPIC" ] && [ "$FULLALBUM" ] && die "AUTOPIC doesn't make sense in FULLALBUM mode!"
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mkdir -p "$OUTDIR"
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# convert cover image. it has to be wider than 1:1 so youtube doesn't convert it to a short
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# if image is wider than 1:1, just resize height. if not, pad with black
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PICTURE="$OUTDIR/ALBUMSETUP_IMG.png"
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magick convert "$tmpimg" -resize 1280x720 -background black -gravity center -extent 722x720 "$PICTURE"
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trap 'clean' INT HUP EXIT
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[ "$EXT" = "opus" ] && acopy="-c:a copy" # copy audio codec if opus since output codec is opus
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# individual song
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if [ "$SONG" ]; then
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grabinfo "$SONG"
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ffconv "$PICTURE" "$SONG" "$OUTDIR/SONG ${ARTIST%%/*} - ${TITLE%%/*}.webm" # substitution mods are to not create directories
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# one continuous video with timestamps
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elif [ "$FULLALBUM" ]; then
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TOTALTIME=0 # keeping track of timestamps
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IFS="$NL"
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for f in $(fd -d 1 -e "$EXT"); do
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grabinfo "$f"
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# make timestamp
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printf '%02d:%02d:%02d - %s\n' \
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"$((${TOTALTIME%%.*} / 3600))" "$((${TOTALTIME%%.*} % 3600 / 60))" "$((${TOTALTIME%%.*} % 60))" \
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"$ARTIST - $TITLE" >> "$OUTDIR/metadata.txt"
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# add to total time, but this is as a float remember that
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TOTALTIME="$(echo "$TOTALTIME + $DURATION" | bc)"
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# build ffmpeg concat metadata
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sf="$(printf '%s' "$f" | sed "s/'/'\\\\''/g")" # make safe filename for ffmpeg concat; replace all ' with '\''
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echo "file '${PWD}/$sf'" >> "$OUTDIR/ffmpeg_tracklist.txt"
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done
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[ ! -f "$OUTDIR/ffmpeg_tracklist.txt" ] && die "No files found!"
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ffconv "$PICTURE" "$OUTDIR/tracklist.txt" "$OUTDIR/$ARTIST - $ALBUM.webm"
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rm "$OUTDIR/ffmpeg_tracklist.txt"
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else # individual tracks for a full album
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IFS="$NL"
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for f in $(fd -d 1 -e "$EXT"); do
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grabinfo "$f"
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# metadata print
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printf '%s %s - %s - %s\n' "${TRACKNUMBER:-000}" "${ARTIST:-unknown artist}" "${ALBUM:-unknown album}" "${TITLE:-unknown title}" >> "$OUTDIR/metadata.txt"
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# try making auto pic
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# if $PIC_AUTO doesn't exist (i.e. trackXXX.(jpg|png), use $PICTURE as fallback
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[ "$AUTOPIC" ] && PIC_AUTO="$(fd -e jpg -e png "^track$TRACKNUMBER")"
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err "Converting $f"
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ffconv "${PIC_AUTO:-$PICTURE}" "$f" "$OUTDIR/$TRACKNUMBER ${ARTIST%%/*} - ${TITLE%%/*}.webm"
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done
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[ ! -f "$OUTDIR/metadata.txt" ] && die "No files found!"
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# sort by correct track numbers then remove track numbers later
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sort -o "$OUTDIR/metadata.txt.sorted" "$OUTDIR/metadata.txt"
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while read -r line; do
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echo "$line" | cut -d ' ' -f 2-
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done <"$OUTDIR/metadata.txt.sorted" >"$OUTDIR/metadata.txt"
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rm "$OUTDIR/metadata.txt.sorted"
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fi
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