AAXtoMP3/AAXtoMP3.pl

72 lines
2.2 KiB
Perl
Executable File

#!/usr/bin/env perl
use strict;
use warnings;
use v5.22.0;
use autodie;
use Getopt::Long qw/GetOptions/;
Getopt::Long::Configure qw/gnu_getopt/;
use File::Basename qw/fileparse/;
use IO::CaptureOutput qw/capture_exec/;
say "Starting $0...";
my $VERBOSE;
my $AUTHCODE;
my $INPUT_FILE;
GetOptions(
'auth|a=s' => \$AUTHCODE,
'input|i=s' => \$INPUT_FILE,
'verbose|v' => \$VERBOSE,
) or die "Usage: $0 -verbose -auth <AUDIBLE AUTH CODE> -input <INPUT FILE PATH>";
die "Usage: $0 -verbose -auth <AUDIBLE AUTH CODE> -input <INPUT AAX PATH>"
unless ($INPUT_FILE && $AUTHCODE);
die "$INPUT_FILE is not a valid path" unless (-f $INPUT_FILE);
my ($filename, $dir, $extension) = fileparse($INPUT_FILE, qr/\.[^.]*/);
my $ret = system_execute("ffprobe $INPUT_FILE");
my @fflines = split /\n/, $ret;
my $file_type = pull_from_ffprobe("major_brand", @fflines);
my $file_title = pull_from_ffprobe("title", @fflines);
my $file_author = pull_from_ffprobe("artist", @fflines);
die "Input file ffprobe does not appear to match an AAX file type metadata"
unless $file_type =~ /aax/;
my $output;
if ($file_title && $file_author) {
$output = "$file_title by $file_author";
} else {
$output = $filename;
}
my $output_sh_safe = quotemeta $output;
say "Using Audible auth code to copy AAX audio directly to MP3 format...";
$ret = system_execute("ffmpeg -activation_bytes $AUTHCODE -i $INPUT_FILE -vn -c:a libmp3lame -ab 128k $dir$output_sh_safe.mp3");
say $ret if $VERBOSE;
say "End of $0...";
sub system_execute {
my ($stdout, $stderr, $success, $exit_code) = capture_exec(@_);
say "stdout: $stdout\nstderr: $stderr\nsuccess: $success\nexit code: $exit_code" if ($VERBOSE);
if ($success) {
return $stdout if $stdout;
return $stderr if $stderr;
} else {
my $command = join " ", @_;
die "Command $command was not successful, debug.";
}
}
sub pull_from_ffprobe {
my $desired = shift;
my @fflines = @_;
return unless ($desired && @fflines);
my ($line) = grep { m/^\s+$desired/ } @fflines;
$line =~ s/^\s*(.*?)\s*$/$1/;
my @parts = split /\:/, $line;
shift @parts;
$line = join ':', @parts;
$line =~ s/^\s*(.*?)\s*$/$1/;
return $line;
}