scripts/bash/convertFLACtoALAC.sh

#!/bin/bash

# Default to the current directory if none provided
# https://stackoverflow.com/a/48829326
dir="${1:-.}"

dbg=$1

# Colors are fun
blk=$(tput setaf 0);red=$(tput setaf 1);grn=$(tput setaf 2)
ylw=$(tput setaf 3);blu=$(tput setaf 4);cyn=$(tput setaf 6)
wht=$(tput setaf 7);und=$(tput smul);bld=$(tput bold)
# Uncoloring is important
rst=$(tput sgr0)


function dependencycheck() {
 which ffmpeg
 if [[ $? -eq 1 ]]; then
  die "Dependency check failed. ffmpeg not found."
 fi
}

major=0;minor=0;
function getversion() {
 # This script was written with 4.4. Other versions may work but are untested
 #local version=5.5 #`ffmpeg -version | head -n1 | cut -d' ' -f3 | cut -d- -f1`
 major=`echo $version | cut -d. -f1`
 minor=`echo $version | cut -d. -f2`
}

function die() {
 echo -en ${rst}${red}Exiting for: ${rst}
 echo -e ${rst}${2:-$red}${1}${rst}
 [[ $dbg != "--dont-die" ]] && exit 1
}

function warn() {
 echo -en ${rst}${ylw}Warning: ${rst}
 echo -e ${rst}${2:-$ylw}${1}${rst}
}

function info() {
 echo -en ${rst}${blu}Info: ${rst}
 echo -e ${rst}${2:-$blu}
}

function checkversion() {
 if [[ $major -eq 0 && $minor -eq 0 ]]; then
  die "version check failed."
 fi
 if [[ $major -lt 4 || $major -eq 4 && $minor -lt 4 ]]; then
  warn "ffmpeg version less than 4.4 ($major.$minor). This script may work but it has not been tested"
 fi
}

# trap ctrl-c and call ctrl_c()
# https://rimuhosting.com/knowledgebase/linux/misc/trapping-ctrl-c-in-bash
trap ctrl_c INT
function ctrl_c() {
 tput cnorm
 echo "${rst}${red}CTRL+C Detected, exiting.${rst}"
 exit
}

function convertfile () {
 # https://stackoverflow.com/a/62520505
 local file=$1
 local filename=`echo $file | rev | cut -d. -f2- | rev`
 ffmpeg -i $filename.flac -c:v copy -c:a alac $filename.m4a
}

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dependencycheck
getversion
checkversion