=head1 SYNOPSIS
-B<flac2mp3> [B<--lame-options> I<lame-options>] [B<-q>] [B<-v>] I<file>
+B<flac2mp3> [B<--lame-options> I<lame-options>] [B<-j> I<jobs>] [B<-q>] [B<-v>] I<file> [...]
=head1 DESCRIPTION
-B<flac2mp3> transcodes the FLAC file I<file> to MP3 files. I<file> is
-the kind of FLAC file B<fa-flacd> generates. That is, it contains a
-cue sheet, one TITLE tag per track listed therein, and ARTIST, ALBUM,
-and DATE tags.
+B<flac2mp3> transcodes the FLAC files I<file> to MP3 files. I<file>
+may be the kind of FLAC file B<fa-flacd> generates. That is, it
+contains a cue sheet, one TITLE tag per track listed therein, and
+ARTIST, ALBUM, and DATE tags.
=cut
+package Jobs;
+
+use strict;
+use warnings;
+
+use Errno;
+use POSIX ':sys_wait_h';
+
+sub newjob {
+ my $f = shift;
+ my $jobs = shift;
+ my $debug = shift;
+ my $pid;
+
+ if (not $debug) {
+ $pid = fork();
+ if (not defined($pid)) {
+ die("fork: $!");
+ }
+ }
+
+ if ($debug or $pid == 0) {
+ exit($f->());
+ }
+
+ if ($pid == 0) {
+ exit($f->());
+ }
+
+ push(@$jobs, $pid);
+
+ return $pid;
+}
+
+sub deljob {
+ my $pid = shift;
+ my $status = shift;
+ my $jobs = shift;
+
+ for (my $i = 0; $i <= $#$jobs; $i++) {
+ if ($pid == $jobs->[$i]) {
+ splice(@$jobs, $i, 1);
+ last;
+ }
+ }
+
+ return ($pid, $status);
+}
+
+sub run {
+ my %o = @_;
+ my $maxjobs = $o{'max-jobs'};
+ my $get_job = $o{'get-job'};
+ my $notify_start = $o{'notify-start'};
+ my $notify_finish = $o{'notify-finish'};
+ my @jobs;
+ my $pid;
+
+ # Call notifier function if given.
+ sub call {
+ my $f = shift or return;
+ ref($f) eq 'CODE' or return;
+ $f->(@_);
+ }
+
+ while (1) {
+ if (@jobs < $maxjobs) {
+ my $job;
+ while (defined($job = $get_job->())) {
+ $pid = newjob($job, \@jobs, $o{'debug'});
+ call($notify_start, $pid, @jobs);
+ @jobs < $maxjobs or last;
+ }
+
+ # No jobs running and get-job returned undef; we're finished.
+ if (@jobs == 0 and not defined($job)) {
+ return;
+ }
+ }
+
+ # Now running as many jobs as we can, block waiting for one to die.
+ do {
+ $pid = waitpid(-1, 0);
+ } while ($pid == 0
+ or ($pid == -1 and ($!{ECHILD} or $!{EINTR})));
+ $pid == -1 and die("waitpid(-1): $!");
+
+ # Before starting more, see if any others have finished.
+ do {
+ call($notify_finish, deljob($pid, $?, \@jobs), @jobs);
+ } while (($pid = waitpid(-1, WNOHANG)) > 0);
+ if ($pid == -1) {
+ $!{ECHILD} or $!{EINTR} or die("waitpid(-1): $!");
+ }
+ }
+}
+
+\f
+################################################################################
+package main;
+
use strict;
use warnings;
push(@args, $arg);
}
+ # If no cue sheet, stick a dummy in here.
+ if (@args == 0) {
+ @args = ([]);
+ }
+
return @args;
}
my $artist;
my $album;
my $date;
+ my $discnum;
+ my $track;
open(TAGS, '-|', 'metaflac', '--export-vc-to=-', $fn)
or die("open(metaflac --export-vc-to=- $fn): $!");
$album = $value;
} elsif (/^DATE=/i) {
$date = $value;
+ } elsif (/^DISCNUMBER=/i) {
+ $discnum = int($value);
} elsif (/^ARTIST\[/i) {
push(@$artists, $value);
+ } elsif (/^TRACKNUMBER=/i) {
+ $track = $value;
# Intentionally don't match the = on this one, to support the
# TITLE[1] .. TITLE[n] tag style.
}
close(TAGS) or die("close(metaflac --export-vc-to=- $fn): $?");
- return ($artist, $album, $date);
+ # If no TITLEs, stick a dummy in here.
+ if (@$titles == 0) {
+ push(@$titles, undef);
+ }
+
+ return ($artist, $album, $date, $discnum, $track);
+}
+
+sub arg {
+ my $arg = shift;
+ my $var = shift;
+
+ if (defined($$var)) {
+ $$var = "$arg '$$var'";
+ } else {
+ $$var = ''
+ }
}
sub flac2mp3 {
my $fn = shift;
- my $title = shift;
- my $artist = shift;
- my $album = shift;
- my $date = shift;
- my $track = shift;
+ my $title = (shift or 'unknown');
+ my $artist = (shift or 'unknown');
+ my $album = (shift or 'unknown');
+ my $date = (shift or 'unknown');
+ my $track = int(shift);
my $skip_arg = shift;
my $until_arg = shift;
my @tmp;
# any single quotes in the filename by closing the quote ('),
# putting an escaped quote (\'), and then reopening the quote (').
for ($fn, $title, $artist, $album, $date) {
- s/'/'\\''/g;
+ defined and s/'/'\\''/g;
}
$outfile = sprintf("$artist ($album) \%02s $title.mp3", $track);
$outfile =~ s/\//_/g;
+ arg('--tt', \$title);
+ arg('--ta', \$artist);
+ arg('--tl', \$album);
+ arg('--ty', \$date);
+ arg('--tn', \$track);
+
+ $skip_arg ||= '';
$until_arg ||= '';
run_or_die(join(' ', "flac $flac_options -cd $skip_arg $until_arg '$fn'",
- " | lame $lame_options --tt '$title' --ta '$artist'",
- " --tl '$album' --ty '$date' --tn $track - '$outfile'"));
+ " | lame $lame_options $title $artist $album $date $track",
+ " - '$outfile'"));
}
MAIN: {
my $help;
+ my $debug;
+ my $maxjobs = 1;
GetOptions(
+ 'debug|X' => \$debug,
+ 'jobs|j=i' => \$maxjobs,
'lame-options=s', \$lame_options,
'quiet|q' => \$quiet,
'verbose|v' => \$verbose,
) or pod2usage();
$help and pod2usage(-exitstatus=>0, -verbose=>1);
- my $fn = shift or pod2usage();
- my @args = get_decode_args($fn);
- my (@artists, @titles);
- my ($artist, $album, $date) = get_tags($fn, \@artists, \@titles);
+ @ARGV > 0 or pod2usage();
+
+ my @jobs;
+ for my $fn (@ARGV) {
+ my @args = get_decode_args($fn);
+ my (@artists, @titles);
+ my ($artist, $album, $date, $discnum, $track) = get_tags($fn, \@artists,
+ \@titles);
- for my $i (0..$#titles) {
- flac2mp3($fn, $titles[$i], ($artists[$i] or $artist), $album, $date,
- $i + 1, @{$args[$i]});
+ # lame doesn't seem to support disc number.
+ defined($discnum) and $album .= " (disc $discnum)";
+
+ # Stupid hack: only a single-track file should have the
+ # TRACKNUMBER tag, so use it if set for the first pass through
+ # the loop. At the end of the loop, we'll set $track for the
+ # next run, so this continues to work for multi-track files.
+ $track ||= 1;
+
+ for my $i (0..$#titles) {
+ push(@jobs, [$fn, $titles[$i], ($artists[$i] or $artist), $album,
+ $date, $track, @{$args[$i]}]);
+ $track = $i + 2;
+ }
}
+
+ Jobs::run('max-jobs'=>$maxjobs,
+ 'debug'=>$debug,
+ 'get-job'=>sub {
+ my $job = shift(@jobs) or return;
+ return sub { flac2mp3(@$job) }
+ });
}
\f
shell, so feel free to take advantage of that. You'll almost
certainly have to put I<lame-options> in single quotes.
+=item B<-j> [B<--jobs>] I<jobs>
+
+Run up to I<jobs> jobs instead of the default 1.
+
=item B<-q> [B<--quiet>]
Suppress status information. This option is passed along to B<flac>
projects / flac-archive / blobdiff