diff options
Diffstat (limited to '.config/init/funcs/audio-convert')
| -rwxr-xr-x | .config/init/funcs/audio-convert | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/.config/init/funcs/audio-convert b/.config/init/funcs/audio-convert new file mode 100755 index 0000000..4923baa --- /dev/null +++ b/.config/init/funcs/audio-convert @@ -0,0 +1,233 @@ +#!/usr/bin/env zsh +# concatenate multiple audio files into one + +source "$HOME/.config/init/helpers" || exit 1 + +local callstr=$0 + +usage() { + echo "Usage: $callstr [OPTIONS...] <infile>..." + echo "Convert multiple audio files to a new format" + echo "" + echo " \e[1mdescription opt longform arg default\e[0m" + echo " output codec -c --codec <codec> opus" + echo " output bitrate -b --bitrate <int>k (opus:35k, vorbis:50k, mp3:65k, flac:N/A)" + echo " output quality -q --quality <int> N/A" + echo " output directory -d --dest <dir> ." + echo " copy metadata -m --metadata <bool> false" + echo " background job count -j --jobs <int> 4" + echo " print this help -h --help" + exit 0 +} + +local fifoname +local fifomade=0 +local pid + +trap_abort() { + echo "" + print-error "process interrupted" + # race condition-y, but eh + repeat 5; do + [[ -z $pid ]] && sleep 0.1 || break + done + [[ -z $pid ]] || kill -s SIGKILL $pid + [[ -p $fifoname ]] && [[ $fifomade -eq 1 ]] && 2>/dev/null rm $fifoname + exit 1 +} + +trap 'trap_abort' SIGABRT SIGHUP SIGINT SIGQUIT SIGTERM + +local codecpat='^(opus|mp3|vorbis|flac)$' +local bitratepat='^[1-9][0-9]*k$' +local metadatapat='^(true|false)$' +local jobcountpat='^[1-9][0-9]*$' + +local qpatvorbis='^([0-9]|10)$' +local qpatmp3='^[0-9]$' + +local codecstr +local codecprintstr +local extstr +local bitratestr +local bitrateset +local metastr +local dirstr +local qstr + +local jobcount + +local parseerr=$(2>&1 zparseopts -D -E -M -A args \ + c: -codec:=c \ + b: -bitrate:=b \ + q: -quality:=q \ + d: -dest:=d -destination:=d \ + j: -jobs:=j \ + m:: -metadata::=m \ + h -help=h | cut -d ' ' -f 2-) + +[[ -z $parseerr ]] || abort $parseerr + +zparseopts -D -E -M -A args \ + c: -codec:=c \ + b: -bitrate:=b \ + q: -quality:=q \ + d: -dest:=d -destination:=d \ + j: -jobs:=j \ + m:: -metadata::=m \ + h -help=h + +local optarg +local opt +for opt in ${(@k)args}; do + unset optarg + [[ -z $args[$opt] ]] || optarg=$args[$opt] + case $opt in + -c) [[ $optarg =~ $codecpat ]] || \ + abort "codec must be one of \`opus\`, \`mp3\`, \`flac\`, or \`vorbis\`" + [[ ${optarg} == 'opus' ]] \ + && codecprintstr=${optarg} \ + && codecstr='libopus' && extstr='opus' \ + && [[ -z $bitratestr ]] && bitratestr='35k' + [[ ${optarg} == 'mp3' ]] \ + && codecprintstr=${optarg} \ + && codecstr='libmp3lame' && extstr='mp3' \ + && [[ -z $bitratestr ]] && bitratestr='65k' + [[ ${optarg} == 'vorbis' ]] \ + && codecprintstr=${optarg} \ + && codecstr='libvorbis' && extstr='ogg' \ + && [[ -z $bitratestr ]] && bitratestr='50k' + [[ ${optarg} == 'flac' ]] \ + && codecprintstr=${optarg} \ + && codecstr='flac' && extstr='flac' \ + && [[ -z $bitratestr ]] && bitratestr='' + ;; + -b) [[ $optarg =~ $bitratepat ]] || \ + abort "bitrate must positive integer + k, for kbps" + bitratestr=$optarg + bitrateset=1 + ;; + -q) qstr=$optarg ;; + -d) dirstr=$optarg ;; + -j) [[ $optarg =~ $jobcountpat ]] || \ + abort "job count must be a non-negative integer" + jobcount=$optarg + ;; + -m) if [[ $optarg ]]; then + [[ $optarg =~ $metadatapat ]] || \ + abort "metadata must be either \`true\` or \`false\`" + + [[ $optarg == "false" ]] && metastr="" \ + || metastr=("-map_metadata" "-1") + else + metastr=("-map_metadata" "-1") + fi + ;; + -h) usage ;; + esac +done + +[[ -z $codecstr ]] && codecstr='libopus' +[[ -z $bitratestr ]] && bitratestr='35k' +[[ -z $codecprintstr ]] && codecprintstr='opus' +[[ -z $extstr ]] && extstr='opus' +[[ -z $jobcount ]] && jobcount=4 +[[ -z $dirstr ]] && dirstr='.' +[[ -z $metastr ]] && metastr=("-map_metadata" "-1") + +if [[ ! -z $qstr ]]; then + [[ -z $bitratset ]] || abort "-b and -q are not compatible" + [[ $codecstr == "libopus" ]] && abort "-q cannot be used with opus" + [[ $codecstr == "libflac" ]] && abort "-q cannot be used with flac" + [[ $codecstr == "libvorbis" ]] && [[ ! $qstr =~ $qpatvorbis ]] \ + && abort "for vorbis, -q must be in the range [0-10]" + [[ $codecstr == "libmp3lame" ]] && [[ ! $qstr =~ $qpatmp3 ]] \ + && abort "for mp3, -q must be in the range [0-9]" +else +fi + +[[ $codecstr == "flac" ]] && bitratestr='' + +[[ $#@ -eq 0 ]] && abort "no input files specified" + +local f +for f in $@; do + [[ -f $f ]] || abort "could not read file \`$f\`" +done + +2>/dev/null mkdir -p $dirstr || abort "could not write to directory \`$dirstr\`" + +repeat 5; do + fifoname="$dirstr/audio-convert-tmp-$RANDOM" + [[ -e $fifoname ]] && continue + 2>/dev/null mkfifo $fifoname || return 1 + fifomade=1 + break +done + +[[ $fifomade -eq 1 ]] || abort "could not make temporary fifo" + +local delprompt +for f in $@; do + local dest="$dirstr/${f:t:r}.$extstr" + + if [[ -e $dest ]]; then + printf "destination file \`$dest\` exists\ndelete it? [y/N]: " + read -q delprompt + print "" + [[ $delprompt = "y" ]] || return 0 + 2>/dev/null rm $dest || abort "could not delete file \`$dest\`" + fi +done + +local totalstr="${#@} file" +[[ $#@ -ne 1 ]] && totalstr="${totalstr}s" +local jobstr=$jobcount +[[ $#@ -lt $jobcount ]] && jobstr=$#@ +[[ $jobstr -gt 1 ]] && jobstr="${jobstr} jobs" || jobstr="${jobstr} job" + +( +{ + local joblist=() + while read -d $'\0' f; do + local dest="$dirstr/${f:t:r}.$extstr" + ( + ffmpeg -loglevel -8 -i $f \ + -vn -sn -c:a $codecstr \ + ${bitratestr/*k/-b:a} $bitratestr \ + ${qstr/[0-9]*/-q:a} $qstr \ + $metastr \ + $dest + echo "done" + ) & + joblist+=$! + done + + local j + for j in $joblist; do + 2>/dev/null wait $j + done +} < $fifoname | { + repeat $jobcount; do + if [[ $#@ -gt 0 ]]; then + printf "%s\0" $@[1] + shift + fi + done + + while read line; do + if [[ $#@ -gt 0 ]]; then + printf "%s\0" $@[1] + shift + else + break + fi + done +} > $fifoname +)& + +pid=$! + +wait-anim $pid "using $jobstr to convert $totalstr to $codecprintstr" + +2>/dev/null rm $fifoname |