forked from HPR/hpr-tools
Moved project directories and files to an empty local repo
This commit is contained in:
Dave Morriss
213
InternetArchive/transcode
Executable file
213
InternetArchive/transcode
Executable file
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#!/bin/bash -
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#===============================================================================
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#
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# FILE: transcode
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#
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# USAGE: ./transcode path_to_file
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#
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# DESCRIPTION: Given an audio file generated for archive.org transcode it to
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# other audio formats: wav, opus, flac, mp3, ogg, spx. Having
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# done so propagate the tags from the first file to the others.
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#
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# OPTIONS: ---
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# REQUIREMENTS: ---
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# BUGS: ---
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# NOTES: ---
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# AUTHOR: Dave Morriss (djm), Dave.Morriss@gmail.com
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# VERSION: 0.0.2
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# CREATED: 2018-01-05 12:52:49
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# REVISION: 2021-04-23 20:27:35
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#
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#===============================================================================
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set -o nounset # Treat unset variables as an error
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SCRIPT=${0##*/}
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# DIR=${0%/*}
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VERSION="0.0.2"
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STDOUT="/dev/fd/2"
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#=== FUNCTION ================================================================
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# NAME: _usage
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# DESCRIPTION: Reports usage; always exits the script after doing so
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# PARAMETERS: 1 - the integer to pass to the 'exit' command
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# RETURNS: Nothing
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#===============================================================================
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_usage () {
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local -i result=${1:-0}
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cat >$STDOUT <<-endusage
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${SCRIPT} - version: ${VERSION}
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Usage: ./${SCRIPT} [-h] [-v] path_to_file
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Performs a "transcode" action on the given file.
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This means a variety of audio types are generated from the 'wav' format. The
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formats required are 'wav' 'opus' 'flac' 'mp3' 'ogg' 'spx'. If the file
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presented is not 'wav' format then this format is generated from the file
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using ffmpeg.
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Options:
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-h Print this help
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-v Run in verbose mode where more information is reported
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Arguments:
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path_to_file The primary file to be processed. The replica files
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generated from it are written to the same path. The
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file is expected to be an HPR audio file with a name
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such as 'hpr1234.mp3'.
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endusage
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exit "$result"
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}
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#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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#
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# Options
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#
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while getopts :hv opt
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do
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case "${opt}" in
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h) _usage 1;;
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v) VERBOSE=1;;
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*) _usage 1;;
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esac
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done
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shift $((OPTIND - 1))
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VERBOSE=${VERBOSE:-0}
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#
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# Check for the presence of the required tools
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#
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for f in ffmpeg ffprobe opusenc sox speexenc transfer_tags; do
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TOOL=$(command -v $f)
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if [[ -z $TOOL ]]; then
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echo "$SCRIPT: Unable to find required audio tool '$f'; aborted"
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exit 1
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fi
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done
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#
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# We need an audio file argument
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#
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if [[ $# -ne 1 ]]; then
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_usage 1
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fi
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PRIMARY=$1
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WORKDIR=${PRIMARY%/*}
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FILE=${PRIMARY##*/}
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# echo "PRIMARY=$PRIMARY"
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# echo "WORKDIR=$WORKDIR"
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# echo "FILE=$FILE"
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declare -a audiotypes
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mapfile -t audiotypes < <(printf '%s\n' wav opus flac mp3 ogg spx)
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#
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# We expect an HPR-format filename and one of a list of audio formats.
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# TODO: review the use of spx!
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#
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RE="${audiotypes[*]/%/|}"
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RE="${RE// /}"
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RE="${RE:0: -1}"
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RE="^hpr([0-9]{1,4})\.($RE)$"
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if [[ $FILE =~ $RE ]]; then
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ep_num=${BASH_REMATCH[1]}
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ext=${BASH_REMATCH[2]}
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else
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echo "$SCRIPT: Expecting an HPR audio file, got $FILE"
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exit 1
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fi
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#
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# Check the primary file exists
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#
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[ -e "$PRIMARY" ] || { echo "$SCRIPT: Unable to find the file: $PRIMARY"; exit 1; }
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#
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# Is the primary file a wav file? If not, convert it
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# TODO: Can this be one with spx?
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#
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CHANNELS=1
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WAV="$WORKDIR/hpr${ep_num}.wav"
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if [[ ! -e $WAV ]]; then
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if [[ ! "$ext" == 'wav' ]]; then
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[[ $VERBOSE -eq 1 ]] && echo "Making a wav file from $ext"
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ffmpeg -i "${PRIMARY}" -ar 44100 -ac $CHANNELS "$WAV" > /dev/null 2>&1
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fi
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fi
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TEMP_DIR='/tmp'
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#
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# Make variables containing the audio variants
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#
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[[ $VERBOSE -eq 1 ]] && echo "Generating replica files..."
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for fmt in "${audiotypes[@]}"; do
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target="$WORKDIR/hpr${ep_num}.${fmt}"
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case $fmt in
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wav)
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[[ $VERBOSE -eq 1 ]] && echo "** Nothing to do for $fmt"
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continue
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;;
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opus)
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if [[ ! -e "$target" ]]; then
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if [[ $VERBOSE -eq 1 ]]; then
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echo "Make format $fmt"
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opusenc "$WAV" "$target"
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else
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opusenc "$WAV" "$target" > /dev/null 2>&1
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fi
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else
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[[ $VERBOSE -eq 1 ]] && echo "** $target already exists"
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fi
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continue
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;;
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flac|mp3|ogg)
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if [[ ! -e "$target" ]]; then
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if [[ $VERBOSE -eq 1 ]]; then
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echo "Make format $fmt"
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sox --temp "${TEMP_DIR}" -S "$WAV" "$target"
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else
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sox --temp "${TEMP_DIR}" -S "$WAV" "$target" > /dev/null 2>&1
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fi
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else
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[[ $VERBOSE -eq 1 ]] && echo "** $target already exists"
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fi
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continue
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;;
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spx)
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if [[ ! -e "$target" ]]; then
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if [[ $VERBOSE -eq 1 ]]; then
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echo "Make format $fmt"
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sox --temp "${TEMP_DIR}" -S "$WAV" -c 1 -r 16000 -t wav - |\
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speexenc - "$target"
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else
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sox --temp "${TEMP_DIR}" -S "$WAV" -c 1 -r 16000 -t wav - |\
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speexenc - "$target" > /dev/null 2>&1
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fi
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else
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[[ $VERBOSE -eq 1 ]] && echo "** $target already exists"
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fi
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continue
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;;
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esac
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done
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[[ $VERBOSE -eq 1 ]] && echo "transfer_tags $PRIMARY"
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if [[ $VERBOSE -eq 1 ]]; then
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transfer_tags -verbose "$PRIMARY"
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else
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transfer_tags -noverbose "$PRIMARY"
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fi
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exit
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# vim: syntax=sh:ts=8:sw=4:ai:et:tw=78:fo=tcrqn21
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