moving arch dotfiles into archsetup

1 files changed, 908 insertions, 0 deletions

diff --git a/dotfiles/system/.local/bin/AAXtoMP3 b/dotfiles/system/.local/bin/AAXtoMP3
new file mode 100755
index 0000000..adc91ef
--- /dev/null
+++ b/dotfiles/system/.local/bin/AAXtoMP3
@@ -0,0 +1,908 @@
+#!/usr/bin/env bash
+
+
+# ========================================================================
+# Command Line Options
+
+# Usage Synopsis.
+usage=$'\nUsage: AAXtoMP3 [--flac] [--aac] [--opus ] [--single] [--level <COMPRESSIONLEVEL>]
+[--chaptered] [-e:mp3] [-e:m4a] [-e:m4b] [--authcode <AUTHCODE>] [--no-clobber]
+[--target_dir <PATH>] [--complete_dir <PATH>] [--validate] [--loglevel <LOGLEVEL>]
+[--keep-author <N>] [--author <AUTHOR>] [--{dir,file,chapter}-naming-scheme <STRING>]  
+[--use-audible-cli-data] [--continue <CHAPTERNUMBER>] {FILES}\n'
+codec=libmp3lame            # Default encoder.
+extension=mp3               # Default encoder extension.
+level=-1                    # Compression level. Can be given for mp3, flac and opus. -1 = default/not specified.
+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.
+dirNameScheme=              # Custom directory naming scheme, default is $genre/$author/$title
+customDNS=0
+fileNameScheme=             # Custom file naming scheme, default is $title
+customFNS=0
+chapterNameScheme=          # Custom chapter naming scheme, default is '$title-$(printf %0${#chaptercount}d $chapternum) $chapter' (BookTitle-01 Chapter 1)
+customCNS=0
+completedir=                # Optional location to move aax files once the decoding is complete.
+container=mp3               # Just in case we need to change the container.  Used for M4A to M4B
+VALIDATE=0                  # Validate the input aax file(s) only.  No Transcoding of files will occur
+loglevel=1                  # Loglevel: 0: Show progress only; 1: default; 2: a little more information, timestamps; 3: debug
+noclobber=0                 # Default off, clobber only if flag is enabled
+continue=0                  # Default off, If set Transcoding is skipped and chapter splitting starts at chapter continueAt.
+continueAt=1                # Optional chapter to continue splitting the chapters.
+keepArtist=-1               # Default off, if set change author metadata to use the passed argument as field
+authorOverride=             # Override the author, ignoring the metadata           
+audibleCli=0                # Default off, Use additional data gathered from mkb79/audible-cli
+aaxc_key=                   # Initialize variables, in case we need them in debug_vars
+aaxc_iv=                    # Initialize variables, in case we need them in debug_vars
+
+# -----
+# 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=opus; container=ogg;                   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=mp4;          shift ;;
+                      # Similar to --aac but specific to audio books
+    -e:m4b            ) codec=copy; extension=m4b; mode=single; container=mp4;          shift ;;
+                      # Change the working dir from AAX directory to what you choose.
+    -t | --target_dir ) targetdir="$2";                                                 shift 2 ;;
+                      # Use a custom directory naming scheme, with variables.
+    -D | --dir-naming-scheme ) dirNameScheme="$2"; customDNS=1;                         shift 2 ;;
+                      # Use a custom file naming scheme, with variables.
+    -F | --file-naming-scheme ) fileNameScheme="$2"; customFNS=1;                       shift 2 ;;
+                       # Use a custom chapter naming scheme, with variables.
+    --chapter-naming-scheme ) chapterNameScheme="$2"; customCNS=1;                      shift 2 ;;
+                      # Move the AAX file to a new directory when decoding is complete.
+    -C | --complete_dir ) completedir="$2";                                             shift 2 ;;
+                      # Authorization code associate with the AAX file(s)
+    -A | --authcode   ) auth_code="$2";                                                 shift 2 ;;
+                      # Don't overwrite the target directory if it already exists
+    -n | --no-clobber ) noclobber=1;                                                    shift ;;
+                      # Extremely verbose output.
+    -d | --debug      ) loglevel=3;                                                     shift ;;
+                      # Set loglevel.
+    -l | --loglevel   ) loglevel="$2";                                                  shift 2 ;;
+                      # Validate ONLY the aax file(s) No transcoding occurs
+    -V | --validate   ) VALIDATE=1;                                                     shift ;;
+                      # continue splitting chapters at chapter continueAt
+    --continue        ) continueAt="$2"; continue=1;                                    shift 2 ;;
+                      # Use additional data got with mkb79/audible-cli
+    --use-audible-cli-data ) audibleCli=1;                                              shift ;;
+                      # Compression level
+    --level           ) level="$2";                                                     shift 2 ;;
+                      # Keep author number n
+    --keep-author     ) keepArtist="$2";                                                shift 2 ;;
+                      # Author override
+    --author          ) authorOverride="$2";                                            shift 2 ;;
+                      # Command synopsis.
+    -h | --help       ) printf "$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
+
+# Setup safer bash script defaults.
+set -o errexit -o noclobber -o nounset -o pipefail
+
+# ========================================================================
+# Utility Functions
+
+# -----
+# debug
+# debug "Some longish message"
+debug() {
+  if [ $loglevel == 3 ] ; then
+    echo "$(date "+%F %T%z") DEBUG ${1}"
+  fi
+}
+
+# -----
+# debug dump contents of a file to STDOUT
+# debug "<full path to file>"
+debug_file() {
+  if [ $loglevel == 3 ] ; then
+    echo "$(date "+%F %T%z") DEBUG"
+    echo "=Start=========================================================================="
+    cat "${1}"
+    echo "=End============================================================================"
+  fi
+}
+
+# -----
+# debug dump a list of internal script variables to STDOUT
+# debug_vars "Some Message" var1 var2 var3 var4 var5
+debug_vars() {
+  if [ $loglevel == 3 ] ; then
+    msg="$1"; shift ; # Grab the message
+    args=("$@")       # Grab the rest of the args
+
+    # determine the length of the longest key
+    l=0
+    for (( n=0; n<${#args[@]}; n++ )) ; do
+      (( "${#args[$n]}" > "$l" )) && l=${#args[$n]}
+    done
+
+    # Print the Debug Message
+    echo "$(date "+%F %T%z") DEBUG ${msg}"
+    echo "=Start=========================================================================="
+
+    # Using the max length of a var name we dynamically create the format.
+    fmt="%-"${l}"s = %s\n"
+
+    for (( n=0; n<${#args[@]}; n++ )) ; do
+      eval val="\$${args[$n]}"              ; # We save off the value of the var in question for ease of coding.
+
+      echo "$(printf "${fmt}" ${args[$n]} "${val}" )"
+    done
+    echo "=End============================================================================"
+  fi
+}
+
+# -----
+# log
+log() {
+  if [ "$((${loglevel} > 1))" == "1" ] ; then
+    echo "$(date "+%F %T%z") ${1}"
+  else
+    echo "${1}"
+  fi
+}
+
+# -----
+#progressbar produces a progressbar in the style of
+# process: |#######             |  XX% (part/total unit)
+# which is gonna be overwritten by the next line.
+
+progressbar() {
+  #get input
+  part=${1}
+  total=${2}
+
+  #compute percentage and make print_percentage the same length regardless of the number of digits.
+  percentage=$((part*100/total))
+  if [ "$((percentage<10))" = "1" ]; then print_percentage="  $percentage"
+  elif [ "$((percentage<100))" = "1" ]; then print_percentage=" $percentage"
+  else print_percentage="$percentage"; fi
+
+  #draw progressbar with one # for every 5% and blank spaces for the missing part.
+  progressbar=""
+  for (( n=0; n<(percentage/5); n++ )) ; do progressbar="$progressbar#"; done
+  for (( n=0; n<(20-(percentage/5)); n++ )) ; do progressbar="$progressbar "; done
+
+  #print progressbar
+  echo -ne "Chapter splitting: |$progressbar| $print_percentage% ($part/$total chapters)\r"
+}
+# Print out what we have already after command line processing.
+debug_vars "Command line options as set" codec extension mode container targetdir completedir auth_code keepArtist authorOverride audibleCli
+
+# ========================================================================
+# Variable validation
+
+if [ $(uname) = 'Linux' ]; then
+    GREP="grep"
+    FIND="find"
+    SED="sed"
+else
+    GREP="ggrep"
+    FIND="gfind"
+    SED="gsed"
+fi
+
+
+# -----
+# Detect which annoying version of grep we have
+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 which annoying version of find we have
+if ! [[ $(type -P "$FIND") ]]; then
+  echo "$FIND (GNU find) is not in your PATH"
+  echo "Without it, this script will break."
+  echo "On macOS, you may want to try: brew install findutils"
+  exit 1
+fi
+
+# -----
+# Detect which annoying version of sed we have
+if ! [[ $(type -P "$SED") ]]; then
+  echo "$SED (GNU sed) is not in your PATH"
+  echo "Without it, this script will break."
+  echo "On macOS, you may want to try: brew install gnu-sed"
+  exit 1
+fi
+
+# -----
+# Detect ffmpeg and ffprobe
+if [[ "x$(type -P ffmpeg)" == "x" ]]; then
+  echo "ERROR ffmpeg was not found on your env PATH variable"
+  echo "Without it, this script will break."
+  echo "INSTALL:"
+  echo "MacOS:           brew install ffmpeg"
+  echo "Ubuntu:          sudo apt-get update; sudo apt-get install ffmpeg libav-tools x264 x265 bc"
+  echo "Ubuntu (20.04):  sudo apt-get update; sudo apt-get install ffmpeg x264 x265 bc"
+  echo "RHEL:            yum install ffmpeg"
+  exit 1
+fi
+
+# -----
+# Detect ffmpeg and ffprobe
+if [[ "x$(type -P ffprobe)" == "x" ]]; then
+  echo "ERROR ffprobe was not found on your env PATH variable"
+  echo "Without it, this script will break."
+  echo "INSTALL:"
+  echo "MacOS:   brew install ffmpeg"
+  echo "Ubuntu:  sudo apt-get update; sudo apt-get install ffmpeg libav-tools x264 x265 bc"
+  echo "RHEL:    yum install ffmpeg"
+  exit 1
+fi
+
+
+# -----
+# Detect if we need mp4art for cover additions to m4a & m4b files.
+if [[ "x${container}" == "xmp4" && "x$(type -P mp4art)" == "x" ]]; then
+  echo "WARN mp4art was not found on your env PATH variable"
+  echo "Without it, this script will not be able to add cover art to"
+  echo "m4b files. Note if there are no other errors the AAXtoMP3 will"
+  echo "continue. However no cover art will be added to the output."
+  echo "INSTALL:"
+  echo "MacOS:   brew install mp4v2"
+  echo "Ubuntu:  sudo apt-get install mp4v2-utils"
+fi
+
+# -----
+# Detect if we need mp4chaps for adding chapters to m4a & m4b files.
+if [[ "x${container}" == "xmp4" && "x$(type -P mp4chaps)" == "x" ]]; then
+  echo "WARN mp4chaps was not found on your env PATH variable"
+  echo "Without it, this script will not be able to add chapters to"
+  echo "m4a/b files. Note if there are no other errors the AAXtoMP3 will"
+  echo "continue. However no chapter data will be added to the output."
+  echo "INSTALL:"
+  echo "MacOS:   brew install mp4v2"
+  echo "Ubuntu:  sudo apt-get install mp4v2-utils"
+fi
+
+# -----
+# Detect if we need mediainfo for adding description and narrator
+if [[ "x$(type -P mediainfo)" == "x" ]]; then
+  echo "WARN mediainfo was not found on your env PATH variable"
+  echo "Without it, this script will not be able to add the narrator"
+  echo "and description tags. Note if there are no other errors the AAXtoMP3"
+  echo "will continue. However no such tags will be added to the output."
+  echo "INSTALL:"
+  echo "MacOS:   brew install mediainfo"
+  echo "Ubuntu:  sudo apt-get install mediainfo"
+fi
+
+# -----
+# Obtain the authcode from either the command line,  local directory or home directory.
+# See Readme.md for details on how to acquire your personal authcode for your personal
+# audible AAX files.
+if [ -z $auth_code ]; then
+  if [ -r .authcode ]; then
+    auth_code=`head -1 .authcode`
+  elif [ -r ~/.authcode ]; then
+    auth_code=`head -1 ~/.authcode`
+  fi
+fi
+
+# -----
+# Check the target dir for if set if it is writable
+if [[ "x${targetdir}" != "x"  ]]; then
+  if [[ ! -w "${targetdir}" || ! -d "${targetdir}" ]] ; then
+    echo "ERROR Target Directory does not exist or is not writable: \"$targetdir\""
+    echo "$usage"
+    exit 1
+  fi
+fi
+
+# -----
+# Check the completed dir for if set if it is writable
+if [[ "x${completedir}" != "x"  ]]; then
+  if [[ ! -w "${completedir}" || ! -d "${completedir}" ]] ; then
+    echo "ERROR Complete Directory does not exist or is not writable: \"$completedir\""
+    echo "$usage"
+    exit 1
+  fi
+fi
+
+# -----
+# Check whether the loglevel is valid
+if [ "$((${loglevel} < 0 || ${loglevel} > 3 ))" = "1" ]; then
+  echo "ERROR loglevel has to be in the range from 0 to 3!"
+  echo "      0: Show progress only"
+  echo "      1: default"
+  echo "      2: a little more information, timestamps"
+  echo "      3: debug"
+  echo "$usage"
+  exit 1
+fi
+# -----
+# If a compression level is given, check whether the given codec supports compression level specifiers and whether the level is valid.
+if [ "${level}" != "-1" ]; then
+  if [ "${codec}" == "flac" ]; then
+    if [ "$((${level} < 0 || ${level} > 12 ))" = "1" ]; then
+      echo "ERROR Flac compression level has to be in the range from 0 to 12!"
+      echo "$usage"
+      exit 1
+    fi
+  elif [ "${codec}" == "libopus" ]; then
+    if [ "$((${level} < 0 || ${level} > 10 ))" = "1" ]; then
+      echo "ERROR Opus compression level has to be in the range from 0 to 10!"
+      echo "$usage"
+      exit 1
+    fi
+  elif [ "${codec}" == "libmp3lame" ]; then
+    if [ "$((${level} < 0 || ${level} > 9 ))" = "1" ]; then
+      echo "ERROR MP3 compression level has to be in the range from 0 to 9!"
+      echo "$usage"
+      exit 1
+    fi
+  else
+    echo "ERROR This codec doesnt support compression levels!"
+    echo "$usage"
+    exit 1
+  fi
+fi
+
+# -----
+# Clean up if someone hits ^c or the script exits for any reason.
+trap 'rm -r -f "${working_directory}"' EXIT
+
+# -----
+# Set up some basic working files ASAP.  Note the trap will clean this up no matter what.
+working_directory=`mktemp -d 2>/dev/null || mktemp -d -t 'mytmpdir'`
+metadata_file="${working_directory}/metadata.txt"
+
+# -----
+# Validate the AAX and extract the metadata associated with the file.
+validate_aax() {
+  local media_file
+  media_file="$1"
+
+  # Test for existence
+  if [[ ! -r "${media_file}" ]] ; then
+    log "ERROR File NOT Found: ${media_file}"
+    return 1
+  else
+    if [[ "${VALIDATE}" == "1" ]]; then
+      log "Test 1 SUCCESS: ${media_file}"
+    fi
+  fi
+
+  # Clear the errexit value we want to capture the output of the ffprobe below.
+  set +e errexit
+
+  # Take a look at the aax file and see if it is valid. If the source file is aaxc, we give ffprobe additional flags
+  output="$(ffprobe -loglevel warning ${decrypt_param} -i "${media_file}" 2>&1)"
+
+  # If invalid then say something.
+  if [[ $? != "0" ]] ; then
+    # No matter what lets bark that something is wrong.
+    log "ERROR: Invalid File: ${media_file}"
+  elif [[ "${VALIDATE}" == "1" ]]; then
+    # If the validate option is present then lets at least state what is valid.
+    log "Test 2 SUCCESS: ${media_file}"
+  fi
+
+  # This is a big test only performed when the --validate switch is passed.
+  if [[ "${VALIDATE}" == "1" ]]; then
+    output="$(ffmpeg -hide_banner ${decrypt_param} -i "${media_file}" -vn -f null - 2>&1)"
+    if [[ $? != "0" ]] ; then
+      log "ERROR: Invalid File: ${media_file}"
+    else
+      log "Test 3 SUCCESS: ${media_file}"
+    fi
+  fi
+
+  # Dump the output of the ffprobe command.
+  debug "$output"
+
+  # Turn it back on.  ffprobe is done.
+  set -e errexit
+}
+
+validate_extra_files() {
+  local extra_media_file extra_find_command
+  extra_media_file="$1"
+  # Bash trick to delete, non greedy, from the end up until the first '-'
+  extra_title="${extra_media_file%-*}"
+
+  # Using this is not ideal, because if the naming scheme is changed then
+  # this part of the script will break
+  # AAX file: BookTitle-LC_128_44100_stereo.aax
+  # Cover file: BookTitle_(1215).jpg
+  # Chapter file: BookTitle-chapters.json
+
+  # Chapter
+  extra_chapter_file="${extra_title}-chapters.json"
+
+  # Cover
+  extra_dirname="$(dirname "${extra_media_file}")"
+  extra_find_command='$FIND "${extra_dirname}" -maxdepth 1 -regex ".*/${extra_title##*/}_([0-9]+)\.jpg"'
+  # We want the output of the find command, we will turn errexit on later
+  set +e errexit
+  extra_cover_file="$(eval ${extra_find_command})"
+  extra_eval_comm="$(eval echo ${extra_find_command})"
+  set -e errexit
+
+  if [[ "${aaxc}" == "1" ]]; then
+    # bash trick to get file w\o extention (delete from end to the first '.')
+    extra_voucher="${extra_media_file%.*}.voucher"
+    if [[ ! -r "${extra_voucher}" ]] ; then
+      log "ERROR File NOT Found: ${extra_voucher}"
+      return 1
+    fi
+    aaxc_key=$(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
+
+  # Set the needed params to decrypt the file. Needed in all command that require ffprobe or ffmpeg
+  # After validate_extra_files, since the -audible_key and -audible_iv are read in that function
+  if [[ ${aaxc} == "1" ]] ; then
+    decrypt_param="-audible_key ${aaxc_key} -audible_iv ${aaxc_iv}"
+  else
+    decrypt_param="-activation_bytes ${auth_code}"
+  fi
+
+  validate_aax "${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: ${aax_file}"
+  fi
+
+  # Big long DEBUG output. Fully describes the settings used for transcoding.
+  # Note this is a long debug command. It's not critical to operation. It's purely for people debugging
+  # and coders wanting to extend the script.
+  debug_vars "Book and Variable values" title auth_code aaxc aaxc_key aaxc_iv mode aax_file container codec bitrate artist album_artist album album_date genre copyright narrator description publisher currentDirNameScheme output_directory currentFileNameScheme output_file metadata_file working_directory
+
+
+  # Display the total length of the audiobook in format hh:mm:ss
+  # 10#$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