mirror of
https://github.com/KrumpetPirate/AAXtoMP3.git
synced 2024-11-18 03:08:57 +01:00
898 lines
37 KiB
Bash
Executable File
898 lines
37 KiB
Bash
Executable File
#!/usr/bin/env bash
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# ========================================================================
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# Command Line Options
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# Usage Synopsis.
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usage=$'\nUsage: AAXtoMP3 [--flac] [--aac] [--opus ] [--single] [--level <COMPRESSIONLEVEL>]
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[--chaptered] [-e:mp3] [-e:m4a] [-e:m4b] [--authcode <AUTHCODE>] [--no-clobber]
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[--target_dir <PATH>] [--complete_dir <PATH>] [--validate] [--loglevel <LOGLEVEL>]
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[--keep-author <N>] [--author <AUTHOR>] [--{dir,file,chapter}-naming-scheme <STRING>]
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[--use-audible-cli-data] [--continue <CHAPTERNUMBER>] {FILES}\n'
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codec=libmp3lame # Default encoder.
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extension=mp3 # Default encoder extension.
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level=-1 # Compression level. Can be given for mp3, flac and opus. -1 = default/not specified.
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mode=chaptered # Multi file output
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auth_code= # Required to be set via file or option.
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targetdir= # Optional output location. Note default is basedir of AAX file.
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dirNameScheme= # Custom directory naming scheme, default is $genre/$author/$title
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customDNS=0
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fileNameScheme= # Custom file naming scheme, default is $title
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customFNS=0
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chapterNameScheme= # Custom chapter naming scheme, default is '$title-$(printf %0${#chaptercount}d $chapternum) $chapter' (BookTitle-01 Chapter 1)
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customCNS=0
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completedir= # Optional location to move aax files once the decoding is complete.
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container=mp3 # Just in case we need to change the container. Used for M4A to M4B
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VALIDATE=0 # Validate the input aax file(s) only. No Transcoding of files will occur
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loglevel=1 # Loglevel: 0: Show progress only; 1: default; 2: a little more information, timestamps; 3: debug
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noclobber=0 # Default off, clobber only if flag is enabled
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continue=0 # Default off, If set Transcoding is skipped and chapter splitting starts at chapter continueAt.
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continueAt=1 # Optional chapter to continue splitting the chapters.
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keepArtist=-1 # Default off, if set change author metadata to use the passed argument as field
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authorOverride= # Override the author, ignoring the metadata
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audibleCli=0 # Default off, Use additional data gathered from mkb79/audible-cli
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aaxc_key= # Initialize variables, in case we need them in debug_vars
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aaxc_iv= # Initialize variables, in case we need them in debug_vars
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# -----
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# Code tip Do not have any script above this point that calls a function or a binary. If you do
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# the $1 will no longer be a ARGV element. So you should only do basic variable setting above here.
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#
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# Process the command line options. This allows for un-ordered options. Sorta like a getops style
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while true; do
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case "$1" in
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# Flac encoding
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-f | --flac ) codec=flac; extension=flac; mode=single; container=flac; shift ;;
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# Apple m4a music format.
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-a | --aac ) codec=copy; extension=m4a; mode=single; container=m4a; shift ;;
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# Ogg Format
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-o | --opus ) codec=libopus; extension=opus; container=ogg; shift ;;
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# If appropriate use only a single file output.
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-s | --single ) mode=single; shift ;;
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# If appropriate use only a single file output.
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-c | --chaptered ) mode=chaptered; shift ;;
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# This is the same as --single option.
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-e:mp3 ) codec=libmp3lame; extension=mp3; mode=single; container=mp3; shift ;;
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# Identical to --acc option.
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-e:m4a ) codec=copy; extension=m4a; mode=single; container=mp4; shift ;;
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# Similar to --aac but specific to audio books
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-e:m4b ) codec=copy; extension=m4b; mode=single; container=mp4; shift ;;
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# Change the working dir from AAX directory to what you choose.
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-t | --target_dir ) targetdir="$2"; shift 2 ;;
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# Use a custom directory naming scheme, with variables.
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-D | --dir-naming-scheme ) dirNameScheme="$2"; customDNS=1; shift 2 ;;
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# Use a custom file naming scheme, with variables.
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-F | --file-naming-scheme ) fileNameScheme="$2"; customFNS=1; shift 2 ;;
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# Use a custom chapter naming scheme, with variables.
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--chapter-naming-scheme ) chapterNameScheme="$2"; customCNS=1; shift 2 ;;
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# Move the AAX file to a new directory when decoding is complete.
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-C | --complete_dir ) completedir="$2"; shift 2 ;;
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# Authorization code associate with the AAX file(s)
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-A | --authcode ) auth_code="$2"; shift 2 ;;
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# Don't overwrite the target directory if it already exists
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-n | --no-clobber ) noclobber=1; shift ;;
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# Extremely verbose output.
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-d | --debug ) loglevel=3; shift ;;
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# Set loglevel.
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-l | --loglevel ) loglevel="$2"; shift 2 ;;
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# Validate ONLY the aax file(s) No transcoding occurs
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-V | --validate ) VALIDATE=1; shift ;;
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# continue splitting chapters at chapter continueAt
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--continue ) continueAt="$2"; continue=1; shift 2 ;;
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# Use additional data got with mkb79/audible-cli
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--use-audible-cli-data ) audibleCli=1; shift ;;
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# Compression level
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--level ) level="$2"; shift 2 ;;
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# Keep author number n
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--keep-author ) keepArtist="$2"; shift 2 ;;
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# Author override
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--author ) authorOverride="$2"; shift 2 ;;
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# Command synopsis.
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-h | --help ) printf "$usage" $0 ; exit ;;
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# Standard flag signifying the end of command line processing.
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-- ) shift; break ;;
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# Anything else stops command line processing.
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* ) break ;;
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esac
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done
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# -----
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# Empty argv means we have nothing to do so lets bark some help.
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if [ "$#" -eq 0 ]; then
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printf "$usage" $0
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exit 1
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fi
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# Setup safer bash script defaults.
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set -o errexit -o noclobber -o nounset -o pipefail
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# ========================================================================
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# Utility Functions
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# -----
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# debug
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# debug "Some longish message"
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debug() {
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if [ $loglevel == 3 ] ; then
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echo "$(date "+%F %T%z") DEBUG ${1}"
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fi
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}
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# -----
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# debug dump contents of a file to STDOUT
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# debug "<full path to file>"
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debug_file() {
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if [ $loglevel == 3 ] ; then
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echo "$(date "+%F %T%z") DEBUG"
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echo "=Start=========================================================================="
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cat "${1}"
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echo "=End============================================================================"
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fi
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}
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# -----
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# debug dump a list of internal script variables to STDOUT
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# debug_vars "Some Message" var1 var2 var3 var4 var5
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debug_vars() {
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if [ $loglevel == 3 ] ; then
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msg="$1"; shift ; # Grab the message
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args=("$@") # Grab the rest of the args
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# determine the length of the longest key
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l=0
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for (( n=0; n<${#args[@]}; n++ )) ; do
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(( "${#args[$n]}" > "$l" )) && l=${#args[$n]}
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done
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# Print the Debug Message
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echo "$(date "+%F %T%z") DEBUG ${msg}"
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echo "=Start=========================================================================="
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# Using the max length of a var name we dynamically create the format.
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fmt="%-"${l}"s = %s\n"
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for (( n=0; n<${#args[@]}; n++ )) ; do
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eval val="\$${args[$n]}" ; # We save off the value of the var in question for ease of coding.
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echo "$(printf "${fmt}" ${args[$n]} "${val}" )"
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done
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echo "=End============================================================================"
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fi
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}
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# -----
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# log
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log() {
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if [ "$((${loglevel} > 1))" == "1" ] ; then
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echo "$(date "+%F %T%z") ${1}"
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else
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echo "${1}"
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fi
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}
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# -----
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#progressbar produces a progressbar in the style of
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# process: |####### | XX% (part/total unit)
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# which is gonna be overwritten by the next line.
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progressbar() {
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#get input
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part=${1}
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total=${2}
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#compute percentage and make print_percentage the same length regardless of the number of digits.
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percentage=$((part*100/total))
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if [ "$((percentage<10))" = "1" ]; then print_percentage=" $percentage"
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elif [ "$((percentage<100))" = "1" ]; then print_percentage=" $percentage"
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else print_percentage="$percentage"; fi
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#draw progressbar with one # for every 5% and blank spaces for the missing part.
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progressbar=""
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for (( n=0; n<(percentage/5); n++ )) ; do progressbar="$progressbar#"; done
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for (( n=0; n<(20-(percentage/5)); n++ )) ; do progressbar="$progressbar "; done
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#print progressbar
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echo -ne "Chapter splitting: |$progressbar| $print_percentage% ($part/$total chapters)\r"
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}
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# Print out what we have already after command line processing.
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debug_vars "Command line options as set" codec extension mode container targetdir completedir auth_code keepArtist authorOverride audibleCli
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# ========================================================================
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# Variable validation
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# -----
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# Detect which annoying version of grep we have
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GREP=$(grep --version | grep -q GNU && echo "grep" || echo "ggrep")
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if ! [[ $(type -P "$GREP") ]]; then
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echo "$GREP (GNU grep) is not in your PATH"
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echo "Without it, this script will break."
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echo "On macOS, you may want to try: brew install grep"
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exit 1
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fi
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# -----
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# Detect which annoying version of sed we have
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SED=$(sed --version 2>&1 | $GREP -q GNU && echo "sed" || echo "gsed")
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if ! [[ $(type -P "$SED") ]]; then
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echo "$SED (GNU sed) is not in your PATH"
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echo "Without it, this script will break."
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echo "On macOS, you may want to try: brew install gnu-sed"
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exit 1
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fi
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# -----
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# Detect ffmpeg and ffprobe
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if [[ "x$(type -P ffmpeg)" == "x" ]]; then
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echo "ERROR ffmpeg was not found on your env PATH variable"
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echo "Without it, this script will break."
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echo "INSTALL:"
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echo "MacOS: brew install ffmpeg"
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echo "Ubuntu: sudo apt-get update; sudo apt-get install ffmpeg libav-tools x264 x265 bc"
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echo "Ubuntu (20.04): sudo apt-get update; sudo apt-get install ffmpeg x264 x265 bc"
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echo "RHEL: yum install ffmpeg"
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exit 1
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fi
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# -----
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# Detect ffmpeg and ffprobe
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if [[ "x$(type -P ffprobe)" == "x" ]]; then
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echo "ERROR ffprobe was not found on your env PATH variable"
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echo "Without it, this script will break."
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echo "INSTALL:"
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echo "MacOS: brew install ffmpeg"
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echo "Ubuntu: sudo apt-get update; sudo apt-get install ffmpeg libav-tools x264 x265 bc"
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echo "RHEL: yum install ffmpeg"
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exit 1
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fi
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# -----
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# Detect if we need mp4art for cover additions to m4a & m4b files.
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if [[ "x${container}" == "xmp4" && "x$(type -P mp4art)" == "x" ]]; then
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echo "WARN mp4art was not found on your env PATH variable"
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echo "Without it, this script will not be able to add cover art to"
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echo "m4b files. Note if there are no other errors the AAXtoMP3 will"
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echo "continue. However no cover art will be added to the output."
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echo "INSTALL:"
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echo "MacOS: brew install mp4v2"
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echo "Ubuntu: sudo apt-get install mp4v2-utils"
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fi
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# -----
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# Detect if we need mp4chaps for adding chapters to m4a & m4b files.
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if [[ "x${container}" == "xmp4" && "x$(type -P mp4chaps)" == "x" ]]; then
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echo "WARN mp4chaps was not found on your env PATH variable"
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echo "Without it, this script will not be able to add chapters to"
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echo "m4a/b files. Note if there are no other errors the AAXtoMP3 will"
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echo "continue. However no chapter data will be added to the output."
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echo "INSTALL:"
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echo "MacOS: brew install mp4v2"
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echo "Ubuntu: sudo apt-get install mp4v2-utils"
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fi
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# -----
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# Detect if we need mediainfo for adding description and narrator
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if [[ "x$(type -P mediainfo)" == "x" ]]; then
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echo "WARN mediainfo was not found on your env PATH variable"
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echo "Without it, this script will not be able to add the narrator"
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echo "and description tags. Note if there are no other errors the AAXtoMP3"
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echo "will continue. However no such tags will be added to the output."
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echo "INSTALL:"
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echo "MacOS: brew install mediainfo"
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echo "Ubuntu: sudo apt-get install mediainfo"
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fi
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# -----
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# Obtain the authcode from either the command line, local directory or home directory.
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# See Readme.md for details on how to acquire your personal authcode for your personal
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# audible AAX files.
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if [ -z $auth_code ]; then
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if [ -r .authcode ]; then
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auth_code=`head -1 .authcode`
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elif [ -r ~/.authcode ]; then
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auth_code=`head -1 ~/.authcode`
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fi
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fi
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# -----
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# Check the target dir for if set if it is writable
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if [[ "x${targetdir}" != "x" ]]; then
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if [[ ! -w "${targetdir}" || ! -d "${targetdir}" ]] ; then
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echo "ERROR Target Directory does not exist or is not writable: \"$targetdir\""
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echo "$usage"
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exit 1
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fi
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fi
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# -----
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# Check the completed dir for if set if it is writable
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if [[ "x${completedir}" != "x" ]]; then
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if [[ ! -w "${completedir}" || ! -d "${completedir}" ]] ; then
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echo "ERROR Complete Directory does not exist or is not writable: \"$completedir\""
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echo "$usage"
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exit 1
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fi
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fi
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# -----
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# Check whether the loglevel is valid
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if [ "$((${loglevel} < 0 || ${loglevel} > 3 ))" = "1" ]; then
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echo "ERROR loglevel has to be in the range from 0 to 3!"
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echo " 0: Show progress only"
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echo " 1: default"
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echo " 2: a little more information, timestamps"
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echo " 3: debug"
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echo "$usage"
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exit 1
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fi
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# -----
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# If a compression level is given, check whether the given codec supports compression level specifiers and whether the level is valid.
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if [ "${level}" != "-1" ]; then
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if [ "${codec}" == "flac" ]; then
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if [ "$((${level} < 0 || ${level} > 12 ))" = "1" ]; then
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echo "ERROR Flac compression level has to be in the range from 0 to 12!"
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echo "$usage"
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exit 1
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fi
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elif [ "${codec}" == "libopus" ]; then
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if [ "$((${level} < 0 || ${level} > 10 ))" = "1" ]; then
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echo "ERROR Opus compression level has to be in the range from 0 to 10!"
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echo "$usage"
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exit 1
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fi
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elif [ "${codec}" == "libmp3lame" ]; then
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if [ "$((${level} < 0 || ${level} > 9 ))" = "1" ]; then
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echo "ERROR MP3 compression level has to be in the range from 0 to 9!"
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echo "$usage"
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exit 1
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fi
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else
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echo "ERROR This codec doesnt support compression levels!"
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echo "$usage"
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exit 1
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fi
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fi
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# -----
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# Clean up if someone hits ^c or the script exits for any reason.
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trap 'rm -r -f "${working_directory}"' EXIT
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# -----
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# Set up some basic working files ASAP. Note the trap will clean this up no matter what.
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working_directory=`mktemp -d 2>/dev/null || mktemp -d -t 'mytmpdir'`
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metadata_file="${working_directory}/metadata.txt"
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# -----
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# Validate the AAX and extract the metadata associated with the file.
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validate_aax() {
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local media_file
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media_file="$1"
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# Test for existence
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if [[ ! -r "${media_file}" ]] ; then
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log "ERROR File NOT Found: ${media_file}"
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return 1
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else
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if [[ "${VALIDATE}" == "1" ]]; then
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log "Test 1 SUCCESS: ${media_file}"
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fi
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fi
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# Clear the errexit value we want to capture the output of the ffprobe below.
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set +e errexit
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# Take a look at the aax file and see if it is valid. If the source file is aaxc, we give ffprobe additional flags
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if [[ "${aaxc}" == "1" ]]; then
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output="$(ffprobe -loglevel warning -audible_key "${aaxc_key}" -audible_iv "${aaxc_iv}" -i "${media_file}" 2>&1)"
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else
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output="$(ffprobe -loglevel warning -activation_bytes ${auth_code} -i "${media_file}" 2>&1)"
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fi
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# If invalid then say something.
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if [[ $? != "0" ]] ; then
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# No matter what lets bark that something is wrong.
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log "ERROR: Invalid File: ${media_file}"
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elif [[ "${VALIDATE}" == "1" ]]; then
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# If the validate option is present then lets at least state what is valid.
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log "Test 2 SUCCESS: ${media_file}"
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fi
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# This is a big test only performed when the --validate switch is passed.
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if [[ "${VALIDATE}" == "1" ]]; then
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if [[ "${aaxc}" == "1" ]]; then
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output="$(ffmpeg -hide_banner -audible_key ${aaxc_key} -audible_iv ${aaxc_iv} -i "${media_file}" -vn -f null - 2>&1)"
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else
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output="$(ffmpeg -hide_banner -activation_bytes ${auth_code} -i "${media_file}" -vn -f null - 2>&1)"
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fi
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if [[ $? != "0" ]] ; then
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log "ERROR: Invalid File: ${media_file}"
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else
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log "Test 3 SUCCESS: ${media_file}"
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fi
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fi
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# Dump the output of the ffprobe command.
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debug "$output"
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# Turn it back on. ffprobe is done.
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set -e errexit
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}
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validate_extra_files() {
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local extra_media_file extra_find_command
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extra_media_file="$1"
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# Bash trick to delete, non greedy, from the end up until the first '-'
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extra_title="${extra_media_file%-*}"
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# Using this is not ideal, because if the naming scheme is changed then
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# this part of the script will break
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# AAX file: BookTitle-LC_128_44100_stereo.aax
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# Cover file: BookTitle_(1215).jpg
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# Chapter file: BookTitle-chapters.json
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# Chapter
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extra_chapter_file="${extra_title}-chapters.json"
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# Cover
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extra_dirname="$(dirname "${extra_media_file}")"
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extra_find_command='find "${extra_dirname}" -maxdepth 1 -regex ".*/${extra_title##*/}_([0-9]+)\.jpg"'
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# We want the output of the find command, we will turn errexit on later
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set +e errexit
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extra_cover_file="$(eval ${extra_find_command})"
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extra_eval_comm="$(eval echo ${extra_find_command})"
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set -e errexit
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if [[ "${aaxc}" == "1" ]]; then
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# bash trick to get file w\o extention (delete from end to the first '.')
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extra_voucher="${extra_media_file%.*}.voucher"
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if [[ ! -r "${extra_voucher}" ]] ; then
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log "ERROR File NOT Found: ${extra_voucher}"
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return 1
|
|
fi
|
|
aaxc_key=$(jq -r '.content_license.license_response.key' "${extra_voucher}")
|
|
aaxc_iv=$(jq -r '.content_license.license_response.iv' "${extra_voucher}")
|
|
fi
|
|
|
|
debug_vars "Audible-cli variables" extra_media_file extra_title extra_chapter_file extra_cover_file extra_find_command extra_eval_comm extra_dirname extra_voucher aaxc_key aaxc_iv
|
|
|
|
# Test for chapter file existence
|
|
if [[ ! -r "${extra_chapter_file}" ]] ; then
|
|
log "ERROR File NOT Found: ${extra_chapter_file}"
|
|
return 1
|
|
fi
|
|
if [[ "x${extra_cover_file}" == "x" ]] ; then
|
|
log "ERROR Cover File NOT Found"
|
|
return 1
|
|
fi
|
|
|
|
debug "All expected audible-cli related file are here"
|
|
}
|
|
|
|
# -----
|
|
# 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"
|
|
if [[ $(type -P mediainfo) ]]; then
|
|
echo "Mediainfo data START" >> "$metadata_file"
|
|
# Mediainfo output is structured like ffprobe, so we append it to the metadata file and then parse it with get_metadata_value()
|
|
# mediainfo "$media_file" >> "$metadata_file"
|
|
# Or we only get the data we are intrested in:
|
|
# Description
|
|
echo "Track_More :" "$(mediainfo --Inform="General;%Track_More%" "$media_file")" >> "$metadata_file"
|
|
# Narrator
|
|
echo "nrt :" "$(mediainfo --Inform="General;%nrt%" "$media_file")" >> "$metadata_file"
|
|
# Publisher
|
|
echo "pub :" "$(mediainfo --Inform="General;%pub%" "$media_file")" >> "$metadata_file"
|
|
echo "Mediainfo data END" >> "$metadata_file"
|
|
fi
|
|
if [[ "${audibleCli}" == "1" ]]; then
|
|
# If we use data we got with audible-cli, we delete conflicting chapter infos
|
|
$SED -i '/^ Chapter #/d' "${metadata_file}"
|
|
# Some magic: we parse the .json generated by audible-cli.
|
|
# to get the output structure like the one generated by ffprobe,
|
|
# we use some characters (#) as placeholder, add some new lines,
|
|
# put a ',' after the start value, we calculate the end of each chapter
|
|
# as start+length, and we convert (divide) the time stamps from ms to s.
|
|
# Then we delete all ':' since they make a filename invalid.
|
|
jq -r '.content_metadata.chapter_info.chapters[] | "Chapter # start: \(.start_offset_ms/1000), end: \((.start_offset_ms+.length_ms)/1000) \n#\n# Title: \(.title)"' "${extra_chapter_file}" \
|
|
| tr -d ':' >> "$metadata_file"
|
|
fi
|
|
debug "Metadata file $metadata_file"
|
|
debug_file "$metadata_file"
|
|
}
|
|
|
|
# -----
|
|
# Reach into the meta data and extract a specific value.
|
|
# This is a long pipe of transforms.
|
|
# This finds the first occurrence of the key : value pair.
|
|
get_metadata_value() {
|
|
local key
|
|
key="$1"
|
|
# Find the key in the meta data file # Extract field value # Remove the following /'s "(Unabridged) <blanks> at start end and multiples.
|
|
echo "$($GREP --max-count=1 --only-matching "${key} *: .*" "$metadata_file" | cut -d : -f 2- | $SED -e 's#/##g;s/ (Unabridged)//;s/^[[:blank:]]\+//g;s/[[:blank:]]\+$//g' | $SED 's/[[:blank:]]\+/ /g')"
|
|
}
|
|
|
|
# -----
|
|
# specific variant of get_metadata_value bitrate is important for transcoding.
|
|
get_bitrate() {
|
|
get_metadata_value bitrate | $GREP --only-matching '[0-9]\+'
|
|
}
|
|
|
|
# Save the original value, since in the for loop we overwrite
|
|
# $audibleCli in case the file is aaxc. If the file is the
|
|
# old aax, reset the variable to be the one passed by the user
|
|
originalAudibleCliVar=$audibleCli
|
|
# ========================================================================
|
|
# Main Transcode Loop
|
|
for aax_file
|
|
do
|
|
# If the file is in aaxc format, set the proper variables
|
|
if [[ ${aax_file##*.} == "aaxc" ]]; then
|
|
# File is the new .aaxc
|
|
aaxc=1
|
|
audibleCli=1
|
|
else
|
|
# File is the old .aax
|
|
aaxc=0
|
|
# If some previous file in the loop are aaxc, the $audibleCli variable has been overwritten, so we reset it to the original one
|
|
audibleCli=$originalAudibleCliVar
|
|
fi
|
|
debug_vars "Variables set based on file extention" aaxc originalAudibleCliVar audibleCli
|
|
|
|
# No point going on if no authcode found and the file is aax.
|
|
# If we use aaxc as input, we do not need it
|
|
# if the string $auth_code is null and the format is not aaxc; quit. We need the authcode
|
|
if [ -z $auth_code ] && [ "${aaxc}" = "0" ]; then
|
|
echo "ERROR Missing authcode, can't decode $aax_file"
|
|
echo "$usage"
|
|
exit 1
|
|
fi
|
|
|
|
# Validate the input aax file. Note this happens no matter what.
|
|
# It's just that if the validate option is set then we skip to next file.
|
|
# If however validate is not set and we proceed with the script any errors will
|
|
# case the script to stop.
|
|
|
|
# If the input file is aaxc, we need to first get the audible_key and audible_iv
|
|
# We get them in the function validate_extra_files
|
|
|
|
if [[ ${audibleCli} == "1" ]] ; then
|
|
# If we have additional files (obtained via audible-cli), be sure that they
|
|
# exists and they are in the correct location.
|
|
validate_extra_files "${aax_file}"
|
|
fi
|
|
|
|
validate_aax "${aax_file}"
|
|
if [[ ${VALIDATE} == "1" ]] ; then
|
|
# Don't bother doing anything else with this file.
|
|
continue
|
|
fi
|
|
|
|
|
|
# -----
|
|
# Make sure everything is a variable. Simplifying Command interpretation
|
|
save_metadata "${aax_file}"
|
|
genre=$(get_metadata_value genre)
|
|
if [ "x${authorOverride}" != "x" ]; then
|
|
#Manual Override
|
|
artist="${authorOverride}"
|
|
album_artist="${authorOverride}"
|
|
else
|
|
if [ "${keepArtist}" != "-1" ]; then
|
|
# Choose artist from the one that are present in the metadata. Comma separated list of names
|
|
# remove leading space; 'C. S. Lewis' -> 'C.S. Lewis'
|
|
artist="$(get_metadata_value artist | cut -d',' -f"$keepArtist" | $SED -E 's|^ ||g; s|\. +|\.|g; s|((\w+\.)+)|\1 |g')"
|
|
album_artist="$(get_metadata_value album_artist | cut -d',' -f"$keepArtist" | $SED -E 's|^ ||g; s|\. +|\.|g; s|((\w+\.)+)|\1 |g')"
|
|
else
|
|
# The default
|
|
artist=$(get_metadata_value artist)
|
|
album_artist="$(get_metadata_value album_artist)"
|
|
fi
|
|
fi
|
|
title=$(get_metadata_value title)
|
|
title=${title:0:128}
|
|
bitrate="$(get_bitrate)k"
|
|
album="$(get_metadata_value album)"
|
|
album_date="$(get_metadata_value date)"
|
|
copyright="$(get_metadata_value copyright)"
|
|
|
|
# Get more tags with mediainfo
|
|
if [[ $(type -P mediainfo) ]]; then
|
|
narrator="$(get_metadata_value nrt)"
|
|
description="$(get_metadata_value Track_More)"
|
|
publisher="$(get_metadata_value pub)"
|
|
else
|
|
narrator=""
|
|
description=""
|
|
publisher=""
|
|
fi
|
|
|
|
# Define the output_directory
|
|
if [ "${customDNS}" == "1" ]; then
|
|
currentDirNameScheme="$(eval echo "${dirNameScheme}")"
|
|
else
|
|
# The Default
|
|
currentDirNameScheme="${genre}/${artist}/${title}"
|
|
fi
|
|
|
|
# If we defined a target directory, use it. Otherwise use the location of the AAX file
|
|
if [ "x${targetdir}" != "x" ] ; then
|
|
output_directory="${targetdir}/${currentDirNameScheme}/"
|
|
else
|
|
output_directory="$(dirname "${aax_file}")/${currentDirNameScheme}/"
|
|
fi
|
|
|
|
# Define the output_file
|
|
if [ "${customFNS}" == "1" ]; then
|
|
currentFileNameScheme="$(eval echo "${fileNameScheme}")"
|
|
else
|
|
# The Default
|
|
currentFileNameScheme="${title}"
|
|
fi
|
|
output_file="${output_directory}/${currentFileNameScheme}.${extension}"
|
|
|
|
if [[ "${noclobber}" = "1" ]] && [[ -d "${output_directory}" ]]; then
|
|
log "Noclobber enabled but directory '${output_directory}' exists. Exiting to avoid overwriting"
|
|
exit 0
|
|
fi
|
|
mkdir -p "${output_directory}"
|
|
|
|
if [ "$((${loglevel} > 0))" = "1" ]; then
|
|
# Fancy declaration of which book we are decoding. Including the AUTHCODE.
|
|
dashline="----------------------------------------------------"
|
|
log "$(printf '\n----Decoding---%s%s--%s--' "${title}" "${dashline:${#title}}" "${auth_code}")"
|
|
log "Source: ${aax_file}"
|
|
fi
|
|
|
|
# Big long DEBUG output. Fully describes the settings used for transcoding.
|
|
# Note 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_vars "Book and Variable values" title auth_code aaxc aaxc_key aaxc_iv mode aax_file container codec bitrate artist album_artist album album_date genre copyright narrator description publisher currentDirNameScheme output_directory currentFileNameScheme output_file metadata_file working_directory
|
|
|
|
# Set the needed params to decrypt the file. Needed in the main command as
|
|
# well as in the variable total_lenght
|
|
if [[ ${aaxc} == "1" ]] ; then
|
|
decrypt_param="-audible_key ${aaxc_key} -audible_iv ${aaxc_iv}"
|
|
else
|
|
decrypt_param="-activation_bytes ${auth_code}"
|
|
fi
|
|
|
|
# Display the total length of the audiobook in format hh:mm:ss
|
|
# 10#$var force base-10 interpretation. By default it's base-8, so values like 08 or 09 are not octal numbers
|
|
total_length="$(ffprobe -v error ${decrypt_param} -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 "${aax_file}" | cut -d . -f 1)"
|
|
hours="$((total_length/3600))"
|
|
if [ "$((hours<10))" = "1" ]; then hours="0$hours"; fi
|
|
minutes="$((total_length/60-60*10#$hours))"
|
|
if [ "$((minutes<10))" = "1" ]; then minutes="0$minutes"; fi
|
|
seconds="$((total_length-3600*10#$hours-60*10#$minutes))"
|
|
if [ "$((seconds<10))" = "1" ]; then seconds="0$seconds"; fi
|
|
log "Total length: $hours:$minutes:$seconds"
|
|
|
|
# If level != -1 specify a compression level in ffmpeg.
|
|
compression_level_param=""
|
|
if [ "${level}" != "-1" ]; then
|
|
compression_level_param="-compression_level ${level}"
|
|
fi
|
|
|
|
# -----
|
|
if [ "${continue}" == "0" ]; then
|
|
# This is the main work horse command. This is the primary transcoder.
|
|
# This is the primary transcode. All the heavy lifting is here.
|
|
debug 'ffmpeg -loglevel error -stats ${decrypt_param} -i "${aax_file}" -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}" "${output_file}"'
|
|
</dev/null ffmpeg -loglevel error \
|
|
-stats \
|
|
${decrypt_param} \
|
|
-i "${aax_file}" \
|
|
-vn \
|
|
-codec:a "${codec}" \
|
|
${compression_level_param} \
|
|
-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}" \
|
|
-metadata description="${description}" \
|
|
-metadata composer="${narrator}" \
|
|
-metadata publisher="${publisher}" \
|
|
-f ${container} \
|
|
"${output_file}"
|
|
if [ "$((${loglevel} > 0))" == "1" ]; then
|
|
log "Created ${output_file}."
|
|
fi
|
|
# -----
|
|
fi
|
|
# Grab the cover art if available.
|
|
cover_file="${output_directory}/cover.jpg"
|
|
extra_crop_cover=''
|
|
if [ "${continue}" == "0" ]; then
|
|
if [ "${audibleCli}" == "1" ]; then
|
|
# We have a better quality cover file, copy it.
|
|
if [ "$((${loglevel} > 1))" == "1" ]; then
|
|
log "Copy cover file to ${cover_file}..."
|
|
fi
|
|
cp "${extra_cover_file}" "${cover_file}"
|
|
|
|
# We now set a variable, ${extra_crop_cover}, which contains an additional
|
|
# ffmpeg flag. It crops the cover so the width and the height is divisible by two.
|
|
# Since the standard (in the aax file) image resolution is 512, we set the flag
|
|
# only if we use a custom cover art.
|
|
extra_crop_cover='-vf crop=trunc(iw/2)*2:trunc(ih/2)*2'
|
|
else
|
|
# Audible-cli not used, extract the cover from the aax file
|
|
if [ "$((${loglevel} > 1))" == "1" ]; then
|
|
log "Extracting cover into ${cover_file}..."
|
|
fi
|
|
</dev/null ffmpeg -loglevel error -activation_bytes "${auth_code}" -i "${aax_file}" -an -codec:v copy "${cover_file}"
|
|
fi
|
|
fi
|
|
|
|
# -----
|
|
# If mode=chaptered, split the big converted file by chapter and remove it afterwards.
|
|
# Not all audio encodings make sense with multiple chapter outputs (see options section)
|
|
if [ "${mode}" == "chaptered" ]; then
|
|
# Playlist m3u support
|
|
playlist_file="${output_directory}/${currentFileNameScheme}.m3u"
|
|
if [ "${continue}" == "0" ]; then
|
|
if [ "$((${loglevel} > 0))" == "1" ]; then
|
|
log "Creating PlayList ${currentFileNameScheme}.m3u"
|
|
fi
|
|
echo '#EXTM3U' > "${playlist_file}"
|
|
fi
|
|
|
|
# Determine the number of chapters.
|
|
chaptercount=$($GREP -Pc "Chapter.*start.*end" $metadata_file)
|
|
if [ "$((${loglevel} > 0))" == "1" ]; then
|
|
log "Extracting ${chaptercount} chapter files from ${output_file}..."
|
|
if [ "${continue}" == "1" ]; then
|
|
log "Continuing at chapter ${continueAt}:"
|
|
fi
|
|
fi
|
|
chapternum=1
|
|
#start progressbar for loglevel 0 and 1
|
|
if [ "$((${loglevel} < 2))" == "1" ]; then
|
|
progressbar 0 ${chaptercount}
|
|
fi
|
|
# We pipe the metadata_file in read.
|
|
# Example of the section that we are interested in:
|
|
#
|
|
# Chapter #0:0: start 0.000000, end 1928.231474
|
|
# Metadata:
|
|
# title : Chapter 1
|
|
#
|
|
# Then read the line in these variables:
|
|
# first Chapter
|
|
# _ #0:0:
|
|
# _ start
|
|
# chapter_start 0.000000,
|
|
# _ end
|
|
# chapter_end 1928.231474
|
|
while read -r -u9 first _ _ chapter_start _ chapter_end
|
|
do
|
|
# Do things only if the line starts with 'Chapter'
|
|
if [[ "${first}" = "Chapter" ]]; then
|
|
# The next line (Metadata:...) gets discarded
|
|
read -r -u9 _
|
|
# From the line 'title : Chapter 1' we save the third field and those after in chapter
|
|
read -r -u9 _ _ chapter
|
|
|
|
# The formatting of the chapters names and the file names.
|
|
# Chapter names are used in a few place.
|
|
# Define the chapter_file
|
|
if [ "${customCNS}" == "1" ]; then
|
|
chapter_title="$(eval echo "${chapterNameScheme}")"
|
|
else
|
|
# The Default
|
|
chapter_title="${title}-$(printf %0${#chaptercount}d $chapternum) ${chapter}"
|
|
fi
|
|
chapter_file="${output_directory}/${chapter_title}.${extension}"
|
|
|
|
# Since the .aax file allready got converted we can use
|
|
# -acodec copy, which is much faster than a reencodation.
|
|
# Since there is an issue when using copy on flac, where
|
|
# the duration of the chapters gets shown as if they where
|
|
# as long as the whole audiobook.
|
|
chapter_codec=""
|
|
if test "${extension}" = "flac"; then
|
|
chapter_codec="flac "${compression_level_param}""
|
|
else
|
|
chapter_codec="copy"
|
|
fi
|
|
|
|
#Since there seems to be a bug in some older versions of ffmpeg, which makes, that -ss and -to
|
|
#have to be apllied to the output file, this makes, that -ss and -to get applied on the input for
|
|
#ffmpeg version 4+ and on the output for all older versions.
|
|
split_input=""
|
|
split_output=""
|
|
if [ "$(($(ffmpeg -version | $SED -E 's/[^0-9]*([0-9]).*/\1/g;1q') > 3))" = "1" ]; then
|
|
split_input="-ss ${chapter_start%?} -to ${chapter_end}"
|
|
else
|
|
split_output="-ss ${chapter_start%?} -to ${chapter_end}"
|
|
fi
|
|
|
|
# Big Long chapter debug
|
|
debug_vars "Chapter Variables:" cover_file chapter_start chapter_end chapternum chapter chapterNameScheme chapter_title chapter_file
|
|
if [ "$((${continueAt} > ${chapternum}))" = "0" ]; then
|
|
# Extract chapter by time stamps start and finish of chapter.
|
|
# This extracts based on time stamps start and end.
|
|
if [ "$((${loglevel} > 1))" == "1" ]; then
|
|
log "Splitting chapter ${chapternum}/${chaptercount} start:${chapter_start%?}(s) end:${chapter_end}(s)"
|
|
fi
|
|
</dev/null ffmpeg -loglevel quiet \
|
|
-nostats \
|
|
${split_input} \
|
|
-i "${output_file}" \
|
|
-i "${cover_file}" \
|
|
${extra_crop_cover} \
|
|
${split_output} \
|
|
-map 0:0 \
|
|
-map 1:0 \
|
|
-acodec ${chapter_codec} \
|
|
-metadata:s:v title="Album cover" \
|
|
-metadata:s:v comment="Cover (Front)" \
|
|
-metadata track="${chapternum}" \
|
|
-metadata title="${chapter}" \
|
|
-metadata:s:a title="${chapter}" \
|
|
-metadata:s:a track="${chapternum}" \
|
|
-map_chapters -1 \
|
|
-f ${container} \
|
|
"${chapter_file}"
|
|
# -----
|
|
if [ "$((${loglevel} < 2))" == "1" ]; then
|
|
progressbar ${chapternum} ${chaptercount}
|
|
fi
|
|
# OK lets get what need for the next chapter in the Playlist m3u file.
|
|
# Playlist creation.
|
|
duration=$(echo "${chapter_end} - ${chapter_start%?}" | bc)
|
|
echo "#EXTINF:${duration%.*},${title} - ${chapter}" >> "${playlist_file}"
|
|
echo "${chapter_title}.${extension}" >> "${playlist_file}"
|
|
fi
|
|
chapternum=$((chapternum + 1 ))
|
|
fi
|
|
done 9< "$metadata_file"
|
|
|
|
# Clean up of working directory stuff.
|
|
rm "${output_file}"
|
|
if [ "$((${loglevel} > 1))" == "1" ]; then
|
|
log "Done creating chapters for ${output_directory}."
|
|
else
|
|
#ending progress bar
|
|
echo ""
|
|
fi
|
|
else
|
|
# Perform file tasks on output file.
|
|
# ----
|
|
# ffmpeg seems to copy only chapter position, not chapter names.
|
|
if [[ ${container} == "mp4" && $(type -P mp4chaps) ]]; then
|
|
ffprobe -i "${aax_file}" -print_format csv -show_chapters 2>/dev/null | awk -F "," '{printf "CHAPTER%02d=%02d:%02d:%02.3f\nCHAPTER%02dNAME=%s\n", NR, $5/60/60, $5/60%60, $5%60, NR, $8}' > "${output_directory}/${currentFileNameScheme}.chapters.txt"
|
|
mp4chaps -i "${output_file}"
|
|
fi
|
|
fi
|
|
|
|
# -----
|
|
# Announce that we have completed the transcode
|
|
if [ "$((${loglevel} > 0))" == "1" ]; then
|
|
log "Complete ${title}"
|
|
fi
|
|
# Lastly get rid of any extra stuff.
|
|
rm "${metadata_file}"
|
|
|
|
# Move the aax file if the decode is completed and the --complete_dir is set to a valid location.
|
|
# Check the target dir for if set if it is writable
|
|
if [[ "x${completedir}" != "x" ]]; then
|
|
if [ "$((${loglevel} > 0))" == "1" ]; then
|
|
log "Moving Transcoded ${aax_file} to ${completedir}"
|
|
fi
|
|
mv "${aax_file}" "${completedir}"
|
|
fi
|
|
|
|
done
|