534 lines
16 KiB
Bash
Executable File
534 lines
16 KiB
Bash
Executable File
#!/bin/sh
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################################################################################
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## User options
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## You can easily set output folder to current folder with OUTPUT_ROOT=".".
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[ -z "$OUTPUT_ROOT" ] && OUTPUT_ROOT="$HOME/musics"
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## End of user options
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################################################################################
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## For the sake of simplicity we convert everything to OGG.
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## OGG quality ranges from -1 to 10.
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## -q-1 45 kbit/s
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## -q0 64 kbit/s
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## -q1 80 kbit/s
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## -q2 96 kbit/s
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## -q3 112 kbit/s
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## -q4 128 kbit/s
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## -q5 160 kbit/s
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## -q6 192 kbit/s
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## -q7 224 kbit/s
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## -q8 256 kbit/s
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## -q9 320 kbit/s
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## -q10 500 kbit/s
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_printhelp ()
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{
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cat <<EOF | less
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Usage: ${1##*/} [OPTIONS] FILE
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Encode FILE in OGG with proper tags thanks to a very efficient titlecase
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checker. Output is written to user library with subfolders created according to
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tags. It is smart enough to handle empty tags. Covers are extracted from tags
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and found in input folder. Identical covers are only processed once.
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Tags are proccessed according to the following rules (among others):
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* Artist: we use same value for artist and album_artist.
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* Genre: since this is not universal by nature, we do not put a genre in tags,
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except for special cases like Soundtrack.
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* Composer: not universal neither, we prefer ARTIST over COMPOSER, so COMPOSER
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will be empty.
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Encoding quality is set to be the same as the source. OGG cannot go beyond 500,
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so lossless formats like FLAC and WavPack will suffer from a quality loss
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(should you mind).
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Options:
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-c : capital case (only first letter in upper case)
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-f : overwrite if file exists
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-p : preview (do not change file)
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-q : hide FFmpeg runtime output.
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-s : skip encoding
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Tags:
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-a : artist
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-b : bitrate
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-d : date
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-g : genre
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-l : album
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-n : track number
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-r : library root folder
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-t : title
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Everything tag you set from command-line will not get titlecased.
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You can use the following variables to refer to the titlecased values:
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\$ALBUM
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\$ALBUMARTIST
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\$ARTIST
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\$COMPOSER
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\$DATE
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\$FILENAME
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\$GENRE
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\$TRACK
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\$TYER
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If bitrate argument is not provided, we use the bitrate of the source. If
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bitrate argument is 0, we leave FFmpeg chose the value.
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Default output folder:
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OUTPUT_FOLDER="\$OUTPUT_ROOT/\$OUTPUT_ARTIST/\${OUTPUT_ALBUM:+\${OUTPUT_DATE:+\$OUTPUT_DATE - }\$OUTPUT_ALBUM/}"
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Default output file:
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OUTPUT_FILE="\$OUTPUT\$OUTPUT_ARTIST - \${OUTPUT_TRACK:+\$OUTPUT_TRACK - }\$OUTPUT_TITLE.\$OUTPUT_EXT"
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Examples:
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Set the 'artist' tag and reencode:
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${1##*/} -a 'Franz Liszt' file.mp3
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Set 'artist' to be 'composer', and 'title' to be preceded by 'artist', do not reencode:
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${1##*/} -s -a '\$COMPOSER' -t '\$ARTIST - \$TITLE' file.ogg
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Set track number to first field in file name:
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${1##*/} -n '${FILENAME%% }'
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IMPORTANT: you *must* use single quotes when using variables.
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EOF
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}
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## OPTIONS
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CAPITAL=0
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OVERWRITE="-n"
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PREVIEW=false
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SKIP=false
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LOGLEVEL=""
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## TAGS
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OUTPUT_ALBUM='$ALBUM'
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OUTPUT_ARTIST='$ARTIST'
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OUTPUT_DATE='$DATE'
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OUTPUT_GENRE='$GENRE'
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OUTPUT_TITLE='$TITLE'
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OUTPUT_TRACK='$TRACK'
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## PROPERTIES
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OUTPUT_BITRATE=-1
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## Non-CLI-option data. Modifying these imply modifications in code below.
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OUTPUT_EXT="ogg"
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OGG_PARAM='-c:a libvorbis -b:a ${OUTPUT_BITRATE}k'
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## These ones are not CLI-options either, but this could be easily changed.
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OUTPUT_FOLDER='$OUTPUT_ROOT/$OUTPUT_ARTIST${OUTPUT_ALBUM:+/${OUTPUT_DATE:+$OUTPUT_DATE - }$OUTPUT_ALBUM}'
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OUTPUT_FILE='$OUTPUT_ARTIST - ${OUTPUT_PADDEDTRACK:+$OUTPUT_PADDEDTRACK - }$OUTPUT_TITLE'
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while getopts ":a:b:cd:fg:l:n:r:t:hpsq" opt; do
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case $opt in
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a) OUTPUT_ARTIST=$OPTARG ;;
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b) OUTPUT_BITRATE=$OPTARG ;;
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d) OUTPUT_DATE=$OPTARG ;;
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g) OUTPUT_GENRE=$OPTARG ;;
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l) OUTPUT_ALBUM=$OPTARG ;;
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n) OUTPUT_TRACK=$OPTARG ;;
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r) OUTPUT_ROOT=$OPTARG ;;
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t) OUTPUT_TITLE=$OPTARG ;;
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h)
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_printhelp "$0"
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exit 1
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;;
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c)
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CAPITAL=1 ;;
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f)
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OVERWRITE="-y" ;;
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p)
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PREVIEW=true ;;
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s)
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SKIP=true ;;
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q)
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LOGLEVEL="-v fatal" ;;
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?)
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_printhelp "$0"
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exit 1
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;;
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:)
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echo "Missing argument."
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_printhelp "$0"
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exit 1
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;;
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esac
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done
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shift $(($OPTIND - 1))
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if [ $# -eq 0 ]; then
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_printhelp "$0"
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exit
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fi
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if ! command -v ffmpeg >/dev/null; then
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echo "ffmpeg required for transcoding."
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exit
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fi
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if ! command -v realpath >/dev/null; then
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echo "realpath required to get input file folder."
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exit
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fi
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OUTPUT_ROOT="$(realpath "$OUTPUT_ROOT")"
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if [ ! -d "$OUTPUT_ROOT" ]; then
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echo "Output folder '$OUTPUT_ROOT' does not exist."
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exit
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fi
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TITLECASE_SCRIPT="${0%/*}/titlecase.awk"
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if [ ! -f "$TITLECASE_SCRIPT" ]; then
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echo "AWK titlecase script required."
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exit
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fi
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##================================================================================
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## Get metadata.
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STREAM=$(ffmpeg -nostdin -i "$1" 2>&1)
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if [ -z "$(echo $STREAM | grep "Stream")" ]; then
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echo "ERROR: Non-audio file [$1]."
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exit
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fi
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METADATA=$(echo "$STREAM" | sed -n '/Metadata/ ! d; /Metada/{b cont}; :cont ; {n;p;b cont}')
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## Filename without extension nor path.
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INPUT_FILE="${1%.*}"
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INPUT_FILE="${INPUT_FILE##*/}"
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## Folder of the file. Needed for cover.
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INPUT_FOLDER="$(realpath "$1")"
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INPUT_FOLDER="${INPUT_FOLDER%/*}"
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INPUT_EXT="${1##*.}"
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INPUT_BITRATE=$(echo "$STREAM" | sed -n '/Duration/ {s|.* \([[:digit:]]\+\) kb/s|\1|;p;q}')
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## CODEC is unused for now.
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# CODEC=$(echo "$STREAM" | sed -n '/Stream.*Audio:/ {s/.*Audio: \([^,]*\),.*/\1/;p}')
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## Extension needs to be set in case we skip encoding so that ffmpeg will not be
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## disturbed by unappropriate extension.
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if $SKIP && [ -z "$INPUT_EXT" ]; then
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echo "ERROR: Extension missing [$1]."
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exit
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fi
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## WARNING: This function greps for one match only, so if several metadata are
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## present, this may not be the desired values.
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_metadata_filter()
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{
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echo "$METADATA" | grep -im1 "^ *$1 *:" | sed 's/[^:]* : //g'
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}
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INPUT_TITLE=$(_metadata_filter "title")
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INPUT_ARTIST=$(_metadata_filter "artist")
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INPUT_ALBUM=$(_metadata_filter "album")
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INPUT_ALBUMARTIST=$(_metadata_filter "album_artist")
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INPUT_COMPOSER=$(_metadata_filter "composer")
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INPUT_DISC=$(_metadata_filter "disc")
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INPUT_GENRE=$(_metadata_filter "genre")
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INPUT_TRACK=$(_metadata_filter "track")
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INPUT_DATE=$(_metadata_filter "date")
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INPUT_TYER=$(_metadata_filter "TYER")
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##==============================================================================
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## Variable cleansing.
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## We use the AWK script to set title case. The script contains
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## exceptions that can be configured. We fix some chars with sed.
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# ’ => '
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# : => -
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# / => -
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# \ => -
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# & => \&
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_string_cleanser()
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{
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echo "$@" | awk -v capital=$CAPITAL -f "$TITLECASE_SCRIPT" \
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| sed -e "s/’/'/g ; s| *[/\\:] *| - |g" -e 's/ \+/ /g' -e 's|&|\\\\&|g;'
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}
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## These are the "titlecased" variables.
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TITLE=$(_string_cleanser "$INPUT_TITLE")
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ARTIST=$(_string_cleanser "$INPUT_ARTIST")
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ALBUM=$(_string_cleanser "$INPUT_ALBUM")
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ALBUMARTIST=$(_string_cleanser "$INPUT_ALBUMARTIST")
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COMPOSER=$(_string_cleanser "$INPUT_COMPOSER")
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DISC=$(_string_cleanser "$INPUT_DISC")
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GENRE=$(_string_cleanser "$INPUT_GENRE")
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TRACK=$(_string_cleanser "$INPUT_TRACK")
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DATE=$(_string_cleanser "$INPUT_DATE")
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TYER=$(_string_cleanser "$INPUT_TYER")
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FILENAME=$(_string_cleanser "$INPUT_FILE")
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## We also convert spaces to underscores.
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GENRE=$(echo "$GENRE" | tr '[:upper:] ' '[:lower:]_')
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case $GENRE in
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ost) GENRE="Soundtrack" ;;
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soundtrack) GENRE="Soundtrack";;
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original_soundtrack) GENRE="Soundtrack";;
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classical) GENRE="Classical";;
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classics) GENRE="Classical";;
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classic) GENRE="Classical";;
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humour) GENRE="Humour";;
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*) GENRE="";;
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esac
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##================================================================================
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## OUTPUT variables.
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## The following function replaces all variables with their value. This is much
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## safer than using shell expansion through 'eval.'
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_revar()
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{
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echo "$1" | awk \
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-v title="$TITLE" \
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-v artist="$ARTIST" \
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-v album="$ALBUM" \
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-v albumartist="$ALBUMARTIST" \
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-v composer="$COMPOSER" \
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-v disc="$DISC" \
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-v genre="$GENRE" \
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-v track="$TRACK" \
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-v date="$DATE" \
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-v tyer="$TYER" \
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-v filename="$FILENAME" \
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'{ \
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gsub(/\$TITLE/, title); \
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gsub(/\$ARTIST/, artist); \
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gsub(/\$ALBUM/, album); \
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gsub(/\$ALBUMARTIST/, albumartist); \
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gsub(/\$COMPOSER/, composer); \
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gsub(/\$DISC/, disc); \
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gsub(/\$GENRE/, genre); \
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gsub(/\$TRACK/, track); \
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gsub(/\$DATE/, date); \
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gsub(/\$TYER/, tyer); \
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gsub(/\$FILENAME/, filename); \
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print}'
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}
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OUTPUT_TITLE=$(_revar "${OUTPUT_TITLE:-Unknown Title}")
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OUTPUT_ALBUM=$(_revar "${OUTPUT_ALBUM:-Unknown Album}")
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## We use album artist if artist is empty.
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[ -z "$OUTPUT_ARTIST" ] && OUTPUT_ARTIST="$ALBUMARTIST"
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OUTPUT_ARTIST=$(_revar "${OUTPUT_ARTIST:-Unknown Artist}")
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OUTPUT_GENRE=$(_revar "$OUTPUT_GENRE")
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## We remove the track count if any, we suppress leading zeros, we suppress all
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## non-digit characters.
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OUTPUT_TRACK=$(_revar "$OUTPUT_TRACK" | sed -e 's/^0*//' -e 's|[^[:digit:]].*||')
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## We extract the four-digits number from the date.
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OUTPUT_DATE=$(_revar "$OUTPUT_DATE")
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OUTPUT_DATE=$(echo "$OUTPUT_DATE" | sed -n 's/.*\([[:digit:]]\{4\}\).*/\1/p')
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## If DATE is not a year, we use TYER if it is a year.
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TYER_REG=$(_revar "$TYER" | sed -n 's/.*\([[:digit:]]\{4\}\).*/\1/p')
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[ ${#DATE} -ne 4 ] && [ ${#TYER_REG} -eq 4 ] && OUTPUT_DATE="$TYER_REG"
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## QUALITY
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## Only reencode if not in OGG and if SKIP not set, or if explicitly specified.
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INPUT_EXT_LOW="$(echo $INPUT_EXT | tr [:upper:] [:lower:])"
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if $SKIP; then
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OGG_PARAM="-c:a copy"
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OUTPUT_EXT="$INPUT_EXT_LOW"
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fi
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[ "$INPUT_EXT_LOW" = "ogg" ] && [ $OUTPUT_BITRATE -lt 0 ] && OGG_PARAM="-c:a copy"
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[ $OUTPUT_BITRATE -lt 0 ] && OGG_PARAM="-c:a libvorbis ${INPUT_BITRATE}"
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[ $OUTPUT_BITRATE -eq 0 ] && OGG_PARAM="-c:a libvorbis"
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## If OUTPUT_BITRATE is beyond OGG's limit, we trim it.
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[ $OUTPUT_BITRATE -gt 500 ] && OGG_PARAM="-c:a libvorbis 500"
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## Make sure track number has two digits for file name only.
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OUTPUT_PADDEDTRACK=$OUTPUT_TRACK
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if [ -n "$OUTPUT_PADDEDTRACK" ]; then
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[ ${OUTPUT_PADDEDTRACK} -lt 10 ] && OUTPUT_PADDEDTRACK="0$OUTPUT_PADDEDTRACK"
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fi
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OUTPUT_FOLDER=$(_revar "$OUTPUT_FOLDER")
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OUTPUT_FILE=$(_revar "$OUTPUT_FILE")
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unset OUTPUT_FILE_ORIGINAL
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if [ -e "$OUTPUT_FOLDER/$OUTPUT_FILE.$OUTPUT_EXT" ]; then
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if [ $OVERWRITE = "-n" ]; then
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## If file exist, we append a unique timestamp to the name.
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OUTPUT_FILE="$OUTPUT_FILE-$(date '+%F-%H%M%S')"
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OUTPUT_MSG="$(tput setf 1)$(tput bold)(Warning: destination exists, appending timestamp.)$(tput sgr0)"
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else
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## WARNING: here it is important that no folder are suffixed by slashes.
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if [ "$INPUT_FOLDER/$INPUT_FILE.$INPUT_EXT" = "$OUTPUT_FOLDER/$OUTPUT_FILE.$OUTPUT_EXT" ]; then
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OUTPUT_FILE_ORIGINAL="$OUTPUT_FILE"
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OUTPUT_FILE="$OUTPUT_FILE-$(date '+%F-%H%M%S')"
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fi
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OUTPUT_MSG="$(tput setf 4)$(tput bold)(Warning: overwriting destination!)$(tput sgr0)"
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fi
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fi
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##==============================================================================
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## PREVIEW
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## Note: most (all?) shell printf have an alignment issue when strings contain
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## wide characters. We need to use AWK for proper alignment. Hence the 'aprint'
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## function.
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ATTR_WIDTH="%-13.13s" # Length of longest attribute +2
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## INPUT_WIDTH = COLUNMS - ATTR_WIDTH -2 (for |))
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INPUT_WIDTH=$((($(tput cols)-15)/2))
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INPUT_WIDTH="%$INPUT_WIDTH.${INPUT_WIDTH}s"
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## We output everything in one pass to speed up the process since this is quite
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## demanding and called frequently. This function is reliable as long as no
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## tabs are found in tags. But since we have no control over the input, we never
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## no.
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aprint()
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{
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awk -F'\t+' -v FMT="$INPUT_WIDTH | $ATTR_WIDTH| %s\n" '{printf FMT, $1, $2, $3 }'
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}
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aprint <<EOF
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:: INTPUT :: :: OUTPUT ::
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[$INPUT_ARTIST] Artist [$OUTPUT_ARTIST]
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[$INPUT_ALBUM] Album [$OUTPUT_ALBUM]
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[$INPUT_TRACK] Track [$OUTPUT_TRACK]
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[$INPUT_TITLE] Title [$OUTPUT_TITLE]
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[$INPUT_DATE] Date [$OUTPUT_DATE]
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[$INPUT_GENRE] Genre [$OUTPUT_GENRE]
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[$INPUT_EXT] Ext [$OUTPUT_EXT]
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[$INPUT_BITRATE] Bitrate [$OUTPUT_BITRATE]
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[$INPUT_ALBUMARTIST] Albumartist
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[$INPUT_COMPOSER] Composer
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[$INPUT_DISC] Disc
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[$INPUT_TYER] Tyer
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EOF
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cat <<EOF
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:: DESTINATION $OUTPUT_MSG
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[$OUTPUT_FOLDER/$OUTPUT_FILE.$OUTPUT_EXT]
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EOF
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$PREVIEW && exit
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##==============================================================================
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## RUN PROCESS
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echo ":: Processing..."
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## Make sure directory exists.
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mkdir -p "$OUTPUT_FOLDER"
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if [ $? -ne 0 ]; then
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echo "ERROR: could not create output folder [$OUTPUT]."
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exit
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fi
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## COVER. We copy the covers only if they do not already exist. All covers
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## embedded in tags will be extracted. Only files found in the folder where the
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## music is located will be taken into account, subfolders will be discarded.
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COVER_LIMIT=100
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_cover()
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{
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[ ! -f "$1" ] && return
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echo -n "$1 -> "
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OUTPUT_COVER="$OUTPUT_FOLDER/${OUTPUT_ALBUM:+$OUTPUT_ALBUM - }Cover"
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OUTPUT_COVERFILE="$OUTPUT_COVER.${1##*.}"
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COVER_COUNTER=1
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## Different cover with same name is in target folder. We append a number.
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## If a different cover with the same name already exist, we append a number
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## and check again. If it is the same cover, we skip it.
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while [ -e "$OUTPUT_COVERFILE" ]; do
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if [ "$(sha1sum "$OUTPUT_COVERFILE" | cut -f1 -d' ')" = "$(sha1sum "$1" | cut -f1 -d' ')" ]; then
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echo "Skipping"
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return
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else
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OUTPUT_COVERFILE="${OUTPUT_COVER} $COVER_COUNTER.${1##*.}"
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COVER_COUNTER=$(($COVER_COUNTER+1))
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fi
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done
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echo -n "$OUTPUT_COVERFILE"
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## Output warning if cover is too small.
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if command -v mediainfo >/dev/null; then
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BUF="$(mediainfo "$1")"
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COVER_WIDTH=$(echo "$BUF" | awk '/^Width/ {print $3}')
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COVER_HEIGHT=$(echo "$BUF" | awk '/^Height/ {print $3}')
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if [ -z "$COVER_WIDTH" ] || [ $COVER_WIDTH -lt $COVER_LIMIT ] || \
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[ -z "$COVER_HEIGHT" ] || [ $COVER_HEIGHT -lt $COVER_LIMIT ]; then
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echo -n " $(tput setf 1)$(tput bold)(Warning: bad quality cover.)$(tput sgr0)"
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fi
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fi
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cp -n "$1" "$OUTPUT_COVERFILE"
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echo
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echo
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}
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## Embedded covers.
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for i in $(seq 0 $(($(echo "$STREAM" | grep -c '^ *Stream.*Video')-1))); do
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COVER_EXT="$(echo "$STREAM" | awk '/^ *Stream.*Video/ {gsub(/,/, "", $4);print $4}')"
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[ -z "$COVER_EXT" ] && continue
|
||
[ "$COVER_EXT" = "mjpeg" ] && COVER_EXT="jpg"
|
||
|
||
TEMP_COVER="$(mktemp "/tmp/cover-XXXXXX.$COVER_EXT")"
|
||
ffmpeg -nostdin -v quiet -y -i "$1" -an -sn -c:v copy -map 0:v:$i "$TEMP_COVER"
|
||
_cover "$TEMP_COVER"
|
||
|
||
## We do not want to bloat the temp folder with covers, so we remove it.
|
||
rm "$TEMP_COVER"
|
||
done
|
||
|
||
while IFS= read -r i; do
|
||
_cover "$i"
|
||
done <<EOF
|
||
$(find "$INPUT_FOLDER" -maxdepth 1 \( -iname '*.png' -o -iname '*.jpg' \) )
|
||
EOF
|
||
|
||
|
||
## Zsh compatibility. We need it otherwise word splitting of parameter like
|
||
## OGG_PARAM will not work.
|
||
STATUS="$(set -o | grep 'shwordsplit' | awk '{print $2}')"
|
||
[ "$STATUS" = "off" ] && set -o shwordsplit
|
||
|
||
## TAG/RECODE
|
||
## With the -map_metadata parameter we clear all metadata.
|
||
## WARNING: ffmpeg continues to read stdin once it has started, so it should not
|
||
## be called from within a while<<EOF loop without disabling stdin.
|
||
ffmpeg -nostdin $LOGLEVEL $OVERWRITE -i "$1" -vn -sn $OGG_PARAM \
|
||
-map_metadata -1 \
|
||
-metadata title="$OUTPUT_TITLE" \
|
||
-metadata artist="$OUTPUT_ARTIST" \
|
||
-metadata track="$OUTPUT_TRACK" \
|
||
-metadata date="$OUTPUT_DATE" \
|
||
-metadata album="$OUTPUT_ALBUM" \
|
||
-metadata album_artist="$OUTPUT_ARTIST" \
|
||
-metadata genre="$OUTPUT_GENRE" \
|
||
"$OUTPUT_FOLDER/$OUTPUT_FILE.$OUTPUT_EXT"
|
||
|
||
## If we are overwriting inplace.
|
||
if [ -n "$OUTPUT_FILE_ORIGINAL" ]; then
|
||
mv -f "$OUTPUT_FOLDER/$OUTPUT_FILE.$OUTPUT_EXT" "$OUTPUT_FOLDER/$OUTPUT_FILE_ORIGINAL.$OUTPUT_EXT"
|
||
fi
|
||
echo
|
||
|
||
## Restore Zsh previous options. This will not turn off shwordsplit if it
|
||
## was on before calling the function.
|
||
[ "$STATUS" = "off" ] && set +o shwordsplit
|
||
|
||
echo ":: Process finished!"
|