mirror of
https://github.com/KrumpetPirate/AAXtoMP3.git
synced 2025-10-31 11:30:43 +01:00
326 lines
13 KiB
Bash
Executable File
326 lines
13 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
|
|
|
|
# ========================================================================
|
|
# Command Line Options
|
|
|
|
# Usage Synopsis.
|
|
usage=$'\nUsage: AAXtoMP3 [--flac] [--aac] [--opus ] [--single] [--chaptered]\n[-e:m4a] [-e:m4b] [--authcode <AUTHCODE>] [--output_dir <PATH>] {FILES}\n'
|
|
codec=libmp3lame # Default encoder.
|
|
extension=mp3 # Default encoder extention.
|
|
mode=chaptered # Multi file output
|
|
auth_code= # Required to be set via file or option.
|
|
targetdir= # Optional output location. Note default is basedir of AAX file.
|
|
DEBUG=0 # Default off, If set extremely verbose output.
|
|
container=mp3 # Just in case we need to change the container. Used for M4A to M4B
|
|
|
|
# -----
|
|
# Code tip Do not have any script above this point that calls a function or a binary. If you do
|
|
# the $1 will no longer be a ARGV element. So you should only do basic variable setting above here.
|
|
#
|
|
# Process the command line options. This allows for un-ordered options. Sorta like a getops style
|
|
while true; do
|
|
case "$1" in
|
|
# Flac encoding
|
|
-f | --flac ) codec=flac; extension=flac; mode=single; container=flac; shift ;;
|
|
# Apple m4a music format.
|
|
-a | --aac ) codec=copy; extension=m4a; mode=single; container=m4a; shift ;;
|
|
# Ogg Format
|
|
-o | --opus ) codec=libopus; extension=ogg; container=flac; shift ;;
|
|
# If appropriate use only a single file output.
|
|
-s | --single ) mode=single; shift ;;
|
|
# If appropriate use only a single file output.
|
|
-c | --chaptered ) mode=chaptered; shift ;;
|
|
# This is the same as --single option.
|
|
-e:mp3 ) codec=libmp3lame; extension=mp3; mode=single; container=mp3; shift ;;
|
|
# Identical to --acc option.
|
|
-e:m4a ) codec=copy; extension=m4a; mode=single; container=m4a; shift ;;
|
|
# Similiar to --aac but specific to audio books
|
|
-e:m4b ) codec=copy; extension=m4a; mode=single; container=m4b; shift ;;
|
|
# Change the working dir from AAX directory to what you choose.
|
|
-t | --target_dir ) targetdir="$2"; shift 2 ;;
|
|
# Authorization code associate with the AAX file(s)
|
|
-A | --authcode ) auth_code="$2"; shift 2 ;;
|
|
# Extremely verbose output.
|
|
-d | --debug ) DEBUG=1; shift ;;
|
|
# Command synopsis.
|
|
-h | --help ) printf "$usage" $0 ; exit ;;
|
|
# Standard flag signifying the end of command line processing.
|
|
-- ) shift; break ;;
|
|
# Anything else stops command line processing.
|
|
* ) break ;;
|
|
|
|
esac
|
|
done
|
|
|
|
# -----
|
|
# Empty argv means we have nothing to do so lets bark some help.
|
|
if [ "$#" -eq 0 ]; then
|
|
printf "$usage" $0
|
|
exit 1
|
|
fi
|
|
|
|
# ========================================================================
|
|
# Variable validation
|
|
set -o errexit -o noclobber -o nounset -o pipefail
|
|
|
|
# -----
|
|
# Detect which annoying version fo grep we have
|
|
GREP=$(grep --version | grep -q GNU && echo "grep" || echo "ggrep")
|
|
if ! [[ $(type -P "$GREP") ]]; then
|
|
echo "$GREP (GNU grep) is not in your PATH"
|
|
echo "Without it, this script will break."
|
|
echo "On macOS, you may want to try: brew install grep"
|
|
exit 1
|
|
fi
|
|
|
|
# -----
|
|
# Detect if we need mp4art for cover additions to m4a & m4b files.
|
|
if [[ "x${extension}" == "xm4a" && "x$(type -P mp4art)" == "x" ]]; then
|
|
echo "WARN mp4art was not found on your env PATH variable"
|
|
echo "Without it, this script will not be able to add cover art to"
|
|
echo "m4b files. Note if there are no other errors the AAXtoMP3 will"
|
|
echo "continue. However no cover art will be added to the output."
|
|
echo "INSTALL:"
|
|
echo "MacOS: brew install mp4v2"
|
|
echo "Ubuntu: sudo apt-get install mp4v2-utils"
|
|
fi
|
|
|
|
# -----
|
|
# Obtain the authcode from either the command line, local directory or home directory.
|
|
# See Readme.md for details on how to aquire your personal authcode for your personal
|
|
# audible AAX files.
|
|
if [ -z $auth_code ]; then
|
|
if [ -r .authcode ]; then
|
|
auth_code=`head -1 .authcode`
|
|
elif [ -r ~/.authcode ]; then
|
|
auth_code=`head -1 ~/.authcode`
|
|
fi
|
|
fi
|
|
# No point going on if no authcode found.
|
|
if [ -z $auth_code ]; then
|
|
echo "ERROR Missing authcode"
|
|
echo "$usage"
|
|
exit 1
|
|
fi
|
|
|
|
# -----
|
|
# Check the target dir for if set if it is writable
|
|
if [[ "x${targetdir}" != "x" ]]; then
|
|
if [[ ! -w "${targetdir}" || ! -d "${targetdir}" ]] ; then
|
|
echo "ERROR Target Directory is not writable: \"$targetdir\""
|
|
echo "$usage"
|
|
exit 1
|
|
fi
|
|
fi
|
|
|
|
# ========================================================================
|
|
# Utility Functions
|
|
|
|
# -----
|
|
# debug
|
|
debug() {
|
|
if [ $DEBUG == 1 ] ; then
|
|
echo "$(date "+%F %T%z") DEBUG ${1}"
|
|
fi
|
|
}
|
|
|
|
# -----
|
|
# debug dump contents of a file to STDOUT
|
|
debug_file() {
|
|
if [ $DEBUG == 1 ] ; then
|
|
echo "$(date "+%F %T%z") DEBUG"
|
|
echo "================================================================================"
|
|
cat "${1}"
|
|
echo "================================================================================"
|
|
fi
|
|
}
|
|
|
|
# -----
|
|
# log
|
|
log() {
|
|
echo "$(date "+%F %T%z") ${1}"
|
|
}
|
|
|
|
# -----
|
|
# Clean up if someone hits ^c
|
|
trap 'rm -r -f "${working_directory}"' EXIT
|
|
working_directory=`mktemp -d 2>/dev/null || mktemp -d -t 'mytmpdir'`
|
|
metadata_file="${working_directory}/metadata.txt"
|
|
|
|
# -----
|
|
# Inspect the AAX and extract the metadata associated with the file.
|
|
save_metadata() {
|
|
local media_file
|
|
media_file="$1"
|
|
ffprobe -i "$media_file" 2> "$metadata_file"
|
|
debug "Metadata file $metadata_file"
|
|
debug_file "$metadata_file"
|
|
}
|
|
|
|
# -----
|
|
# Reach into the meta data and extract a specific value.
|
|
# Note the white space clean up could be well cleaner.
|
|
get_metadata_value() {
|
|
local key
|
|
key="$1"
|
|
normalize_whitespace "$($GREP --max-count=1 --only-matching "${key} *: .*" "$metadata_file" | cut -d : -f 2- | sed -e 's#/##g;s/ (Unabridged)//' | tr -s '[:blank:]' ' ')"
|
|
}
|
|
|
|
# -----
|
|
# specific varient of get_metadata_value bitrate is important for transcoding.
|
|
get_bitrate() {
|
|
get_metadata_value bitrate | $GREP --only-matching '[0-9]\+'
|
|
}
|
|
|
|
# -----
|
|
# simple function to turn tabs and multiple spaces into a single space.
|
|
normalize_whitespace() {
|
|
echo $*
|
|
}
|
|
|
|
# ========================================================================
|
|
# Main Transcode Loop
|
|
for path
|
|
do
|
|
log "Decoding ${path} with auth code ${auth_code}..."
|
|
|
|
# Check for Presense of Audiobook. Note this break the processing of
|
|
# of a list of books once a single missing file is found.
|
|
if [[ ! -r "${path}" ]] ; then
|
|
echo "ERROR: Input Audiobook file $path missing"
|
|
exit 1
|
|
fi
|
|
|
|
# -----
|
|
# Make sure everything is a variable. Simplifying Command interpretation
|
|
save_metadata "${path}"
|
|
genre=$(get_metadata_value genre)
|
|
artist=$(get_metadata_value artist)
|
|
title=$(get_metadata_value title | sed 's/'\:'/'-'/g' | sed 's/ / /g' | sed 's/- /-/g' | xargs -0)
|
|
if [ "x${targetdir}" != "x" ] ; then
|
|
output_directory="${targetdir}/${genre}/${artist}/${title}"
|
|
else
|
|
output_directory="$(dirname "${path}")/${genre}/${artist}/${title}"
|
|
fi
|
|
full_file_path="${output_directory}/${title}.${extension}"
|
|
bitrate="$(get_bitrate)k"
|
|
album_artist="$(get_metadata_value album_artist)"
|
|
album="$(get_metadata_value album)"
|
|
album_date="$(get_metadata_value date)"
|
|
copyright="$(get_metadata_value copyright)"
|
|
|
|
mkdir -p "${output_directory}"
|
|
|
|
# Big long DEBUG output. Fully describes the settings used for transcoding. I could probably do this better.
|
|
# Not this is a long debug command. It's not critical to operation. It's purely for people debugging
|
|
# and coders wanting to extend the script.
|
|
debug "$(printf '\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %sn%-18s: %s' title "${title}" auth_code "${auth_code}" mode "${mode}" path "${path}" container ${container} codec "${codec}" bitrate "${bitrate}" artist "${artist}" album_artist "${album_artist}" album "${album}" album_date "${album_date}" genre "${genre}" copyright "${copyright}" full_file_path "${full_file_path}" metadata_file "${metadata_file}" working_directory "${working_directory}" )"
|
|
|
|
# -----
|
|
# This is the main work horse command. This is the primary transcoder.
|
|
# This is the primary transcode. All the heavy lifting is here.
|
|
</dev/null ffmpeg -loglevel error -stats -activation_bytes "${auth_code}" -i "${path}" -vn -codec:a "${codec}" -ab ${bitrate} -map_metadata -1 -metadata title="${title}" -metadata artist="${artist}" -metadata album_artist="${album_artist}" -metadata album="${album}" -metadata date="${album_date}" -metadata track="1/1" -metadata genre="${genre}" -metadata copyright="${copyright}" "${full_file_path}"
|
|
|
|
log "Created ${full_file_path}."
|
|
# -----
|
|
|
|
# Grab the cover art if available.
|
|
cover_path="${output_directory}/cover.jpg"
|
|
log "Extracting cover into ${cover_path}..."
|
|
</dev/null ffmpeg -loglevel error -activation_bytes "${auth_code}" -i "${path}" -an -codec:v copy "${cover_path}"
|
|
|
|
# -----
|
|
# OK now spit the file if that's what you want.
|
|
# If we want multiple file we take the big mp3 and split it by chapter.
|
|
# Not all audio encodings make sense with multiple chapter outputs. See options section
|
|
# for more detail
|
|
if [ "${mode}" == "chaptered" ]; then
|
|
# Playlist m3u support
|
|
playlist_file="${output_directory}/${title}.m3u"
|
|
log "Creating PlayList ${title}.m3u"
|
|
echo '#EXTM3U' > "${playlist_file}"
|
|
|
|
# Determine the number of chapters.
|
|
chaptercount=$($GREP -Pc "Chapter.*start.*end" $metadata_file)
|
|
log "Extracting ${chaptercount} chapter files from ${full_file_path}..."
|
|
|
|
chapternum=1
|
|
while read -r -u9 first _ _ start _ end
|
|
do
|
|
if [[ "${first}" = "Chapter" ]]; then
|
|
read -r -u9 _
|
|
read -r -u9 _ _ chapter
|
|
|
|
# The formating of the chapters names and the file names.
|
|
# Chapter names are used in a few place.
|
|
chapter_title="${title}-$(printf %0${#chaptercount}d $chapternum) ${chapter}"
|
|
chapter_file="${output_directory}/${chapter_title}.${extension}"
|
|
|
|
|
|
# the ID3 tags must only be specified for *.mp3 files,
|
|
# the other container formats come with their own
|
|
# tagging mechanisms.
|
|
id3_version_param=""
|
|
if test "${extension}" = "mp3"; then
|
|
id3_version_param="-id3v2_version 3"
|
|
fi
|
|
|
|
# Big Long chapter debug I could probably do this better.
|
|
debug "$(printf '\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s' cover_path "${cover_path}" start "${start%?}" end "${end}" id3_version_param "${id3_version_param}" chapternum "${chapternum}" chapter_title "${chapter_title}" chapter_file "${chapter_file}" )"
|
|
|
|
# Extract chapter by time stamps start and finish of chapter.
|
|
# This extracts based on time stamps start and end.
|
|
log "Spliting chapter ${chapternum} start:${start%?}(s) end:${end}(s)"
|
|
</dev/null ffmpeg -loglevel quiet -nostats -i "${full_file_path}" -i "${cover_path}" -ss "${start%?}" -to "${end}" -map 0:0 -map 1:0 -acodec copy ${id3_version_param} \
|
|
-metadata:s:v title="Album cover" -metadata:s:v comment="Cover (Front)" -metadata track="${chapternum}" -metadata title="${chapter_title}" \
|
|
"${chapter_file}"
|
|
|
|
# -----
|
|
# OK lets get what need for the next chapter in the Playlist m3u file.
|
|
# Playlist creation.
|
|
duration=$(echo "${end} - ${start%?}" | bc)
|
|
echo "#EXTINF:${duration%.*},${title} - ${chapter}" >> "${playlist_file}"
|
|
echo "${chapter_title}.${container}" >> "${playlist_file}"
|
|
chapternum=$((chapternum + 1 ))
|
|
|
|
# ----
|
|
# Add the cover art to m4a and m4b file types.
|
|
if [[ ${extension} == "m4a" && $(type -P mp4art) ]]; then
|
|
mp4art -q --add "${cover_path}" "${chapter_file}"
|
|
log "Added cover art to ${chapter_title}"
|
|
fi
|
|
|
|
# ----
|
|
# Detect if we are actuall m4b instead of m4a Then rename the file.
|
|
if [[ ${extension} == "m4a" && ${container}="m4b" ]]; then
|
|
mv "${chapter_file}" "${chapter_file/.m4a/.m4b}"
|
|
fi
|
|
|
|
fi
|
|
done 9< "$metadata_file"
|
|
|
|
# Clean up of working directoy stuff.
|
|
rm "${full_file_path}"
|
|
log "Done creating chapters for ${output_directory}."
|
|
else
|
|
# Perform file tasks on output file.
|
|
# ----
|
|
# Add the cover art to m4a and m4b file types.
|
|
if [[ ${extension} == "m4a" && $(type -P mp4art) ]]; then
|
|
mp4art -q --add "${cover_path}" "${full_file_path}"
|
|
log "Added cover art to ${title}.${extension}"
|
|
fi
|
|
# ----
|
|
# Detect if we are actuall m4b instead of m4a Then rename the file.
|
|
if [[ ${extension} == "m4a" && ${container}="m4b" ]]; then
|
|
mv "${full_file_path}" "${full_file_path/.m4a/.m4b}"
|
|
fi
|
|
fi
|
|
|
|
|
|
log "Done ${title}"
|
|
# Lastly get rid of any extra stuff.
|
|
rm "${metadata_file}"
|
|
done
|