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moex3
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flac-mass-transcode.pl
Executable file
160
flac-mass-transcode.pl
Executable file
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#!/usr/bin/env perl
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use strict;
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use warnings;
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use File::Path;
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use Getopt::Long;
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use File::Copy qw(copy);
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## Parse arguments
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my $updir = 0;
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my $help = 0;
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GetOptions(
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"help" => \$help,
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"updir=i" => \$updir)
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or die("Error in command line options");
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if ($help) {
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help();
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}
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if (scalar @ARGV != 2) {
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print("Bad arguments\n");
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usage();
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}
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my ($IDIR, $ODIR) = @ARGV;
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my @flacMapPaths = mapInputToOutput($IDIR, $ODIR, q(*.flac));
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my $sizeLength = scalar @flacMapPaths != 0 ? int(log(scalar @flacMapPaths / 2)/log(10)) : 0;
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## Transcode here
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for (my $i = 0; $i < @flacMapPaths; $i += 2) {
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my $inp = $flacMapPaths[$i ];
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my $out = $flacMapPaths[$i+1];
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$out =~ s/\.flac$/.opus/;
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next if (-e $out);
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File::Path::make_path(dirname($out));
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$inp = qq($inp);
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$out = qq($out);
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my $coverOpts = "";
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my $cover = undef;
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if (!hasImage($inp) && defined($cover = getcover($inp))) {
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$coverOpts .= qq(--picture "$cover");
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print("## Adding cover $cover ##\n");
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}
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printf("[%0*d/%d] %s -> %s\n", $sizeLength, $i/2+1, @flacMapPaths / 2, $inp, $out);
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`opusenc --music --comp 10 $coverOpts -- "$inp" "$out"`;
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}
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print("## Starting copying files ##\n");
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my @plainMapPaths = mapInputToOutput($IDIR, $ODIR, "*.mp3' -o -iname '*.m4a' -o -iname '*.ogg' -o -iname '*.opus");
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$sizeLength = scalar @plainMapPaths != 0 ? int(log(scalar @plainMapPaths / 2)/log(10)) : 0;
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## Just copy here
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for (my $i = 0; $i < @plainMapPaths; $i += 2) {
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my $inp = $plainMapPaths[$i ];
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my $out = $plainMapPaths[$i+1];
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next if (-e $out);
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# TODO? Add covers to these too? Naaah
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File::Path::make_path(dirname($out));
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printf("[%0*d/%d] %s -> %s\n", $sizeLength, $i/2+1, @plainMapPaths / 2, $inp, $out);
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copy($inp, $out);
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}
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print("\n## Conversion done! ##\n");
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exit(0);
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###############################################################################
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###############################################################################
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## Return a list of string pairs that maps like this:
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## original file name, output file name ...
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## Args:
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## 1) input directory
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## 2) output directory
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## 3) iname option for find
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sub mapInputToOutput {
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my $inpDir = shift;
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my $outDir = shift;
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my $fglob = shift;
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## Get the path of every file in the given directory, and below it
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my @files = qx(find "$inpDir" -type f -iname '$fglob');
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## Get directories where files are located
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my @dirs;
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foreach my $file (@files) {
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#$file =~ s/\R//;
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chomp($file);
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my $found = 0;
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my $dirn = dirname($file);
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foreach my $dir (@dirs) {
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if ($dir eq $dirn) {
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$found = 1;
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last;
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}
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}
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if (!$found) {
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push(@dirs, $dirn);
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}
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}
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my @splitInpDir = split("/", $inpDir);
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my @plusDirs = @splitInpDir[scalar @splitInpDir - $updir..scalar @splitInpDir - 1];
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my $outpath = "$outDir/" . join("/", @plusDirs);
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my @result;
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foreach my $file (@files) {
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chomp($file);
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my $outfname = "$outpath/" . substr($file, length $inpDir);
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my $inp = qq($file);
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my $out = qq($outfname);
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push(@result, $file);
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push(@result, $outfname);
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}
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return @result;
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}
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## Easy, just print how to use
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sub usage {
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print("Usage: $0 [-h | --help] [-u | --uplevel NUM] <input_dir> <output_dir>\n");
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exit 1;
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}
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sub help {
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my $h = <<EOF;
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Usage:
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flac-mass-transcode.pl [options] <input_dir> <output_dir>
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-h, --help print this help text
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-u, --uplevel take this number of directories from the input path
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EOF
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print("$h");
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exit 0;
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}
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## Get the directory of the file
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## /a/b/c.flac -> /a/b
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sub dirname {
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my $str = shift;
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my $ind = rindex($str, '/');
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return substr($str, 0, $ind);
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}
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## Search for a cover image in the given path
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sub getcover {
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my $flacpath = shift;
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my $dir = dirname($flacpath);
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my $regex = "\\(thumb\\|albumartwork\\|cover\\|folder\\)\\.\\(pn\\|jp\\)g\$";
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my $cmd = "find '$dir' -maxdepth 20 -type f -iregex '.*/$regex'";
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my @imgs = split(/\n/, `$cmd`);
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return undef if scalar(@imgs) == 0;
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return $imgs[0];
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}
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## Checks if a flac file has a cover embedded or not
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sub hasImage {
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my $flacpath = shift;
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my $fname = qq($flacpath);
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my $lines = `metaflac --list --block-type=PICTURE "$fname" | wc -l`;
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return $lines != 0;
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}
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