2 # Copyright (c) 2012 Steve McIntyre <93sam@debian.org>
3 # This code is hereby licensed for public consumption under either the
4 # GNU GPL v2 or greater, or Larry Wall's Artistic license - your choice.
6 # You should have received a copy of the GNU General Public License along
7 # with this program; if not, write to the Free Software Foundation, Inc.,
8 # 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
10 # abcde-musicbrainz-tool
12 # Helper script for abcde to work with the MusicBrainz WS API (v2)
18 use MusicBrainz
::DiscID
;
19 use WebService
::MusicBrainz
::Release
;
20 use WebService
::MusicBrainz
::Artist
;
21 use WebService
::MusicBrainz
::Response
::Track
;
22 use WebService
::MusicBrainz
::Response
::TrackList
;
25 my $FRAMES_PER_SEC = 75;
27 my ($device, $command, $discid, @discinfo, $workdir);
28 Getopt
::Long
::Configure
('no_ignore_case');
29 Getopt
::Long
::Configure
('no_auto_abbrev');
30 GetOptions
("device=s" => \
$device,
31 "command=s" => \
$command,
32 "discid=s" => \
$discid,
33 "discinfo=i{5,}" => \
@discinfo,
34 "workdir=s" => \
$workdir);
36 if (!defined($device)) {
37 $device = "/dev/cdrom";
39 if (!defined($command)) {
42 if (!defined($workdir)) {
47 if ($command =~ m/^id/) {
48 my $disc = new MusicBrainz
::DiscID
($device);
50 # read the disc in the default disc drive */
51 if ( $disc->read() == 0 ) {
52 printf STDERR
"Error: %s\n", $disc->error_msg();
56 printf("%s ", $disc->id());
57 printf("%d ", $disc->last_track_num() + 1 - $disc->first_track_num());
59 for ( my $i = $disc->first_track_num;
60 $i <= $disc->last_track_num; $i++ ) {
61 printf("%d ", $disc->track_offset($i));
63 printf("%d\n", $disc->sectors() / $FRAMES_PER_SEC);
66 } elsif ($command =~ m/data/) {
67 my $ws = WebService
::MusicBrainz
::Release
->new();
68 my $response = $ws->search({ DISCID
=> $discid });
69 my @releases = $response->release_list();
72 foreach my $release (@releases) {
73 my $a_artist = $release->artist()->name();
75 if ($a_artist =~ /Various Artists/) {
79 open (OUT
, "> $workdir/cddbread.$releasenum");
81 print OUT
"# xmcd style database file\n";
83 print OUT
"# Track frame offsets:\n";
84 # Assume standard pregap
86 my @tracks = @
{$release->track_list()->tracks()};
87 for (my $i = 0; $i < scalar(@tracks); $i++) {
88 printf OUT
"# %d\n", ceil
($total_len * $FRAMES_PER_SEC / 1000.0);
89 $total_len += $tracks[$i]->duration();
92 printf OUT
"# Disc length: %d seconds\n", $total_len / 1000.0;
94 print OUT
"# Submitted via: XXXXXX\n";
96 print OUT
"#blues,classical,country,data,folk,jazz,newage,reggae,rock,soundtrack,misc\n";
97 print OUT
"#CATEGORY=none\n";
98 print OUT
"DISCID=" . $discid . "\n";
99 print OUT
"DTITLE=" . $a_artist. " / " . $release->title() . "\n";
100 print OUT
"DYEAR=\n";
101 print OUT
"DGENRE=\n";
103 my @tracks = @
{$release->track_list()->tracks()};
104 for (my $i = 0; $i < scalar(@tracks); $i++) {
105 my $track = $tracks[$i];
106 my $t_name = $track->title;
108 my $t_artist = $track->artist->name;
109 printf OUT
"TTITLE%d=%s / %s\n", $i, $t_artist, $t_name;
111 printf OUT
"TTITLE%d=%s\n", $i, $t_name;
116 for (my $i = 0; $i < scalar(@tracks); $i++) {
117 printf OUT
"EXTT%d=\n", $i;
119 print OUT
"PLAYORDER=\n";
123 } elsif ($command =~ m/calcid/) {
124 # Calculate MusicBrainz ID from disc offsets; see
125 # http://musicbrainz.org/doc/DiscIDCalculation
127 my ($first, $last, $leadin, $leadout, @offsets) = @discinfo;
129 my $s = Digest
::SHA
->new(1);
130 $s->add(sprintf "%02X", int($first));
131 $s->add(sprintf "%02X", int($last));
134 for (my $i = 0; $i < 100; $i++) {
138 foreach my $o ($leadout, @offsets) {
139 $a[$i++] = int($o) + int($leadin);
141 for (my $i = 0; $i < 100; $i++) {
142 $s->add(sprintf "%08X", $a[$i]);
145 my $id = $s->b64digest;
146 # CPAN Digest modules do not pad their Base64 output, so we have to do it.
147 while (length($id) % 4) {