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#!/usr/bin/perl
use strict;
use Getopt::Std;
our $opt_c;
getopts('c');
my $fmt = <<FMT;
Input File : '01_snapping_clean.wav'
Channels : 1
Sample Rate : 44100
Precision : 16-bit
Duration : 00:03:09.35 = 8350438 samples = 14201.4 CDDA sectors
File Size : 16.7M
Bit Rate : 706k
Sample Encoding: 16-bit Signed Integer PCM
FMT
sub process($) {
my $filename = shift or die "Usage: $0 [...filenames]\n";
my ($name, $ext) = split(/\./, $filename, 2);
if ($ext !~ /(wav|mp3|aiff?|flac)/) {
print "not a valid file extension: $ext\n";
return;
}
if ($ext eq 'mp3') {
system('ffmpeg', '-i', $filename, $name . '.wav');
$filename = $name . '.wav';
}
my $soxi = `soxi $filename`;
my @lines = split("\n", $soxi);
print $soxi;
my $seconds;
for my $line (@lines) {
if ($line =~ /Duration : (\d\d):(\d\d):(\d\d)\./) {
my $h = $1;
my $m = $2;
my $s = $3;
$seconds = (((($h * 60) + $m) * 60) + $s) + 0;
}
}
my $scale = sprintf("%.09f", 5e-7 * $seconds);
print "Seconds: $seconds\n";
print "Scale factor: $scale\n";
print "\n";
my $a_tmp = "a_" . $filename;
my $b_tmp = "b_" . $filename;
if (!$opt_c) {
print "Normalizing...";
system("sox", "-v", 0.945, $filename, $a_tmp);
} else {
$a_tmp = $filename;
}
system("./spread.sh", $a_tmp, $b_tmp, 0.999, $scale, 1.001);
system("./split44k.sh", $b_tmp, 8, $name);
if (!$opt_c) {
system("/bin/rm", $a_tmp);
}
system("/bin/rm", $b_tmp);
}
foreach my $file (@ARGV) {;
if ( -e $file ) {
process($file);
}
}
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