File [scripts/flac_downto_128k.sh]
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#!/bin/bash |
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# |
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# Convert all flac files to mp3 @ 128k using lame |
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# |
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# Thanks to http://blog.tordeu.com/?p=184 for snippets |
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# |
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if [ $1 ]; then |
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do_artist=$1 |
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else |
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do_artist="" |
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fi |
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base_dir="${HOME}/Music" |
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high_dir="flac" |
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tmpy=/tmp/flac_downto_128k |
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bits_out=128 |
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out_dir="mp3-${bits_out}kbit-resampled" |
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# Some stat counters |
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let n_artists=0 |
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let n_albums=0 |
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let n_tracks=0 |
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let n_artists_r=0 |
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let n_albums_r=0 |
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let n_tracks_r=0 |
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let n_artists_c=0 |
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let n_albums_c=0 |
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let n_tracks_c=0 |
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last_artist="" |
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last_album="" |
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# Create a tmp directory for dumps |
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if [ ! -d "${tmpy}" ]; then |
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mkdir ${tmpy} |
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fi |
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# Scan through all of the high quality directories |
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for this_high_dir in ${high_dir} |
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do |
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# Scan for artists |
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echo "Scanning ${this_high_dir} directory ..." |
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ls -1 "${base_dir}/${this_high_dir}" > ${tmpy}/${this_high_dir} |
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# Scan for albums |
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while read artist |
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do |
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if [ "${do_artist}" = "" ] || [ "${do_artist}" = "${artist}" ]; then |
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let n_artists=$n_artists+1 |
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# Scan for tracks |
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echo " Found ${artist} - scanning for albums ..." |
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artist_clean=`echo ${artist//[ \[\]()&;\'\"\,\’:*?]/_} | tr -s _ _ ` |
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if [ "${artist}" != "${artist_clean}" ]; then |
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echo " Renaming ${artist} to ${artist_clean}" |
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mv "${base_dir}/${this_high_dir}/${artist}" "${base_dir}/${this_high_dir}/${artist_clean}" |
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artist=${artist_clean} |
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let n_artists_r=$n_artists_r+1 |
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fi |
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ls -1 "${base_dir}/${this_high_dir}/${artist}" > ${tmpy}/${this_high_dir}-${artist} |
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while read album |
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do |
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let n_albums=$n_albums+1 |
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echo " Found ${album} - scanning for tracks ..." |
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album_clean=`echo ${album//[ \[\]()&;\'\"\,\’:*?]/_} | tr -s _ _ ` |
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if [ "${album}" != "${album_clean}" ]; then |
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echo " Renaming ${album} to ${album_clean}" |
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mv "${base_dir}/${this_high_dir}/${artist}/${album}" "${base_dir}/${this_high_dir}/${artist}/${album_clean}" |
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album=${album_clean} |
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let n_albums_r=$n_albums_r+1 |
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fi |
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ls -1 "${base_dir}/${this_high_dir}/${artist}/${album}" > ${tmpy}/${this_high_dir}-${artist}-${album} |
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# Now the fun bit ... let's start re-encoding the track we've just found |
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while read track |
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do |
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track_clean=`echo ${track//[ \[\]()&;\'\"\,\’:*?]/_} | tr -s _ _ ` |
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if [ "${track}" != "${track_clean}" ]; then |
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echo " Renaming ${track} to ${track_clean}" |
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mv "${base_dir}/${this_high_dir}/${artist}/${album}/${track}" "${base_dir}/${this_high_dir}/${artist}/${album}/${track_clean}" |
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track=${track_clean} |
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let n_tracks_r=$n_tracks_r+1 |
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fi |
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this_source="${base_dir}/${this_high_dir}/${artist}/${album}/${track}" |
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this_dest=`echo ${base_dir}/${out_dir}/${artist}/${album}/${track} | sed 's/.flac/.mp3/g'` |
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# Check that it's a FLAC file |
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if [ `file "${this_source}" | grep -c "FLAC audio bitstream data"` = "1" ]; then |
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let n_tracks=$n_tracks+1 |
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# Check the datestamps |
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source_date=`stat -c %Y "${this_source}"` |
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if [ -f "${this_dest}" ]; then |
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dest_date=`stat -c %Y "${this_dest}"` |
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else |
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dest_date=0 |
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fi |
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# Only encode or copy if dest is older than source |
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if [ ${dest_date} -lt ${source_date} ]; then |
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############################################## |
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# Time to do what we were sent here to do!!! # |
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############################################## |
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# Get tag data from source. |
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# Artist |
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s_artist=`metaflac --show-tag=ARTIST "${this_source}" | awk -F "=" '{print $2}'` |
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# Album |
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s_album=`metaflac --show-tag=ALBUM "${this_source}" | awk -F "=" '{print $2}'` |
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# Track title |
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s_track=`metaflac --show-tag=TITLE "${this_source}" | awk -F "=" '{print $2}'` |
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# Genre |
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s_genre=`metaflac --show-tag=GENRE "${this_source}" | awk -F "=" '{print $2}'` |
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# Year |
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s_year=`metaflac --show-tag=DATE "${this_source}" | awk -F "=" '{print $2}' | awk -F "-" '{print $1}'` |
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# Track number |
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s_track_no=`metaflac --show-tag=TRACKNUMBER "${this_source}" | awk -F "=" '{print $2}'` |
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if [ `expr length "$s_track_no"` -eq 1 ]; then |
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s_track_no="0${s_track_no}" |
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fi |
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d_args="--ta \"${s_artist}\" --tg \"${s_genre}\" --tl \"${s_album}\"" |
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d_args="${d_args} --tn \"${s_track_no}\" --tt \"${s_track}\"" |
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if [ ! ${s_year} = "" ]; then |
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d_args="${d_args} --ty \"${s_year}\"" |
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fi |
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# Create the directory if it doesn't exist |
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if [ ! -d "${base_dir}/${out_dir}/${artist}/${album}" ]; then |
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mkdir -p "${base_dir}/${out_dir}/${artist}/${album}" |
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fi |
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# Now re-encode |
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echo " Re-encoding ${track} (to mp3-${bits_out}kbit)" |
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#echo "flac -c -d \"${this_source}\" 2>/dev/null | lame -B 128 -V 4 ${d_args} - \"${this_dest}\" 2>/dev/null" |
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eval "flac -c -d \"${this_source}\" 2>/dev/null | lame -B 128 -V 4 ${d_args} - \"${this_dest}\" 2>/dev/null" |
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let n_tracks_c=$n_tracks_c+1 |
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if [ "${artist}" != "${last_artist}" ]; then |
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let n_artists_c=$n_artists_c+1 |
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fi |
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if [ "${album}" != "${last_album}" ]; then |
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let n_albums_c=$n_albums_c+1 |
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fi |
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last_artist=${artist} |
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last_album=${album} |
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########################## |
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# Wasn't that simple?!?! # |
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########################## |
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else |
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echo " Skipping ${track} (file up-to-date)" |
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fi |
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else |
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# Not a flac, so just copy (if not already up-to-date) |
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# Check the datestamps |
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source_date=`stat -c %Y "${this_source}"` |
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if [ -f "${this_dest}" ]; then |
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dest_date=`stat -c %Y "${this_dest}"` |
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else |
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dest_date=0 |
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fi |
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# Copy or skip? |
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if [ ${dest_date} -lt ${source_date} ]; then |
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# Create the directory if it doesn't exist |
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if [ ! -d "${base_dir}/${out_dir}/${artist}/${album}" ]; then |
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mkdir -p "${base_dir}/${out_dir}/${artist}/${album}" |
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fi |
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echo " Copying ${track} as not a flac" |
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cp "${this_source}" "${this_dest}" |
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else |
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echo " Skipping ${track} (file up-to-date)" |
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fi |
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fi |
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done <${tmpy}/${this_high_dir}-${artist}-${album} |
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done <${tmpy}/${this_high_dir}-${artist} |
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fi |
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done <${tmpy}/${this_high_dir} |
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done |
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echo "" |
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echo "Found ${n_tracks} tracks in ${n_albums} albums from ${n_artists} artists" |
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echo "Renamed ${n_tracks_r} tracks, ${n_albums_r} albums and ${n_artists_r} artists" |
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echo "Converted ${n_tracks_c} tracks in ${n_albums_c} albums from ${n_artists_c} artists" |
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echo "" |
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# Now clean up the tmp area |
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""rm -f -R ${tmpy} |
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