summaryrefslogtreecommitdiffstats
path: root/tools/songdb.pl
blob: 0377bfd9e64247c4fcc938aa4230e8d64eb43e1f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
#!/usr/bin/perl
#
# Rockbox song database docs:
# http://www.rockbox.org/twiki/bin/view/Main/TagDatabase
#
# MP3::Info by Chris Nandor is included verbatim in this script to make
# it runnable standalone on removable drives. See below.
#

use vorbiscomm;

my $db = "rockbox.tagdb";
my $dir;
my $strip;
my $add;
my $verbose;
my $help;
my $dirisalbum;
my $dirisalbumname;

while($ARGV[0]) {
    if($ARGV[0] eq "--db") {
        $db = $ARGV[1];
        shift @ARGV;
        shift @ARGV;
    }
    elsif($ARGV[0] eq "--path") {
        $dir = $ARGV[1];
        shift @ARGV;
        shift @ARGV;
    }
    elsif($ARGV[0] eq "--strip") {
        $strip = $ARGV[1];
        shift @ARGV;
        shift @ARGV;
    }
    elsif($ARGV[0] eq "--add") {
        $add = $ARGV[1];
        shift @ARGV;
        shift @ARGV;
    }				
    elsif($ARGV[0] eq "--verbose") {
        $verbose = 1;
        shift @ARGV;
    }
    elsif($ARGV[0] eq "--dirisalbum") {
    	$dirisalbum = 1;
	shift @ARGV;
    }
    elsif($ARGV[0] eq "--dirisalbumname") {
    	$dirisalbumname = 1;
	shift @ARGV;
    }
    elsif($ARGV[0] eq "--help" or ($ARGV[0] eq "-h")) {
        $help = 1;
        shift @ARGV;
    }
    else {
        shift @ARGV;
    }
}
my %entries;
my %genres;
my %albums;
my %years;
my %filename;

my %lcartists;
my %lcalbums;

my %dir2albumname;

my $dbver = 3;

if(! -d $dir or $help) {
    print "'$dir' is not a directory\n" if ($dir ne "" and ! -d $dir);
    print "songdb --path <dir> [--dirisalbum] [--dirisalbumname] [--db <file>] [--strip <path>] [--add <path>] [--verbose] [--help]\n";
    exit;
}

sub get_oggtag {
    my $fn = shift;
    my %hash;

    my $ogg = vorbiscomm->new($fn);

    my $h= $ogg->load;

    # Convert this format into the same format used by the id3 parser hash

    foreach my $k ($ogg->comment_tags())
    {
        foreach my $cmmt ($ogg->comment($k))
        {
            my $n;
            if($k =~ /^artist$/i) {
                $n = 'ARTIST';
            }
            elsif($k =~ /^album$/i) {
                $n = 'ALBUM';
            }
            $hash{$n}=$cmmt if($n);
        }
    }

    return \%hash;
}


# return ALL directory entries in the given dir
sub getdir {
    my ($dir) = @_;

    $dir =~ s|/$|| if ($dir ne "/");

    if (opendir(DIR, $dir)) {
        my @all = readdir(DIR);
        closedir DIR;
        return @all;
    }
    else {
        warn "can't opendir $dir: $!\n";
    }
}

sub extractmp3 {
    my ($dir, @files) = @_;
    my @mp3;
    for(@files) {
        if( (/\.mp[23]$/i || /\.ogg$/i) && -f "$dir/$_" ) {
            push @mp3, $_;
        }
    }
    return @mp3;
}

sub extractdirs {
    my ($dir, @files) = @_;
    $dir =~ s|/$||;
    my @dirs;
    for(@files) {
        if( -d "$dir/$_" && ($_ !~ /^\.(|\.)$/)) {
            push @dirs, $_;
        }
    }
    return @dirs;
}

# CRC32 32KB of data (use less if there isn't 32KB available)

sub crc32 {
    my ($filename, $index) = @_;

    my $len = 32*1024;

    if(!open(FILE, "<$filename")) {
        print "failed to open \"$filename\" $!\n";
        return -2;
    }

    # read $data from index $index to $buffer from the file, may return fewer
    # bytes when dealing with a very small file.
    #
    # TODO: make sure we don't include a trailer with metadata when doing this.
    # Like a id3v1 tag.
    my $nread = sysread FILE, $buffer, $len, $index;

    close(FILE);

    my @crc_table = 
    ( # CRC32 lookup table for polynomial 0x04C11DB7
        0x00000000, 0x04C11DB7, 0x09823B6E, 0x0D4326D9, 0x130476DC, 0x17C56B6B,
        0x1A864DB2, 0x1E475005, 0x2608EDB8, 0x22C9F00F, 0x2F8AD6D6, 0x2B4BCB61,
        0x350C9B64, 0x31CD86D3, 0x3C8EA00A, 0x384FBDBD, 0x4C11DB70, 0x48D0C6C7,
        0x4593E01E, 0x4152FDA9, 0x5F15ADAC, 0x5BD4B01B, 0x569796C2, 0x52568B75,
        0x6A1936C8, 0x6ED82B7F, 0x639B0DA6, 0x675A1011, 0x791D4014, 0x7DDC5DA3,
        0x709F7B7A, 0x745E66CD, 0x9823B6E0, 0x9CE2AB57, 0x91A18D8E, 0x95609039,
        0x8B27C03C, 0x8FE6DD8B, 0x82A5FB52, 0x8664E6E5, 0xBE2B5B58, 0xBAEA46EF,
        0xB7A96036, 0xB3687D81, 0xAD2F2D84, 0xA9EE3033, 0xA4AD16EA, 0xA06C0B5D,
        0xD4326D90, 0xD0F37027, 0xDDB056FE, 0xD9714B49, 0xC7361B4C, 0xC3F706FB,
        0xCEB42022, 0xCA753D95, 0xF23A8028, 0xF6FB9D9F, 0xFBB8BB46, 0xFF79A6F1,
        0xE13EF6F4, 0xE5FFEB43, 0xE8BCCD9A, 0xEC7DD02D, 0x34867077, 0x30476DC0,
        0x3D044B19, 0x39C556AE, 0x278206AB, 0x23431B1C, 0x2E003DC5, 0x2AC12072,
        0x128E9DCF, 0x164F8078, 0x1B0CA6A1, 0x1FCDBB16, 0x018AEB13, 0x054BF6A4,
        0x0808D07D, 0x0CC9CDCA, 0x7897AB07, 0x7C56B6B0, 0x71159069, 0x75D48DDE,
        0x6B93DDDB, 0x6F52C06C, 0x6211E6B5, 0x66D0FB02, 0x5E9F46BF, 0x5A5E5B08,
        0x571D7DD1, 0x53DC6066, 0x4D9B3063, 0x495A2DD4, 0x44190B0D, 0x40D816BA,
        0xACA5C697, 0xA864DB20, 0xA527FDF9, 0xA1E6E04E, 0xBFA1B04B, 0xBB60ADFC,
        0xB6238B25, 0xB2E29692, 0x8AAD2B2F, 0x8E6C3698, 0x832F1041, 0x87EE0DF6,
        0x99A95DF3, 0x9D684044, 0x902B669D, 0x94EA7B2A, 0xE0B41DE7, 0xE4750050,
        0xE9362689, 0xEDF73B3E, 0xF3B06B3B, 0xF771768C, 0xFA325055, 0xFEF34DE2,
        0xC6BCF05F, 0xC27DEDE8, 0xCF3ECB31, 0xCBFFD686, 0xD5B88683, 0xD1799B34,
        0xDC3ABDED, 0xD8FBA05A, 0x690CE0EE, 0x6DCDFD59, 0x608EDB80, 0x644FC637,
        0x7A089632, 0x7EC98B85, 0x738AAD5C, 0x774BB0EB, 0x4F040D56, 0x4BC510E1,
        0x46863638, 0x42472B8F, 0x5C007B8A, 0x58C1663D, 0x558240E4, 0x51435D53,
        0x251D3B9E, 0x21DC2629, 0x2C9F00F0, 0x285E1D47, 0x36194D42, 0x32D850F5,
        0x3F9B762C, 0x3B5A6B9B, 0x0315D626, 0x07D4CB91, 0x0A97ED48, 0x0E56F0FF,
        0x1011A0FA, 0x14D0BD4D, 0x19939B94, 0x1D528623, 0xF12F560E, 0xF5EE4BB9,
        0xF8AD6D60, 0xFC6C70D7, 0xE22B20D2, 0xE6EA3D65, 0xEBA91BBC, 0xEF68060B,
        0xD727BBB6, 0xD3E6A601, 0xDEA580D8, 0xDA649D6F, 0xC423CD6A, 0xC0E2D0DD,
        0xCDA1F604, 0xC960EBB3, 0xBD3E8D7E, 0xB9FF90C9, 0xB4BCB610, 0xB07DABA7,
        0xAE3AFBA2, 0xAAFBE615, 0xA7B8C0CC, 0xA379DD7B, 0x9B3660C6, 0x9FF77D71,
        0x92B45BA8, 0x9675461F, 0x8832161A, 0x8CF30BAD, 0x81B02D74, 0x857130C3,
        0x5D8A9099, 0x594B8D2E, 0x5408ABF7, 0x50C9B640, 0x4E8EE645, 0x4A4FFBF2,
        0x470CDD2B, 0x43CDC09C, 0x7B827D21, 0x7F436096, 0x7200464F, 0x76C15BF8,
        0x68860BFD, 0x6C47164A, 0x61043093, 0x65C52D24, 0x119B4BE9, 0x155A565E,
        0x18197087, 0x1CD86D30, 0x029F3D35, 0x065E2082, 0x0B1D065B, 0x0FDC1BEC,
        0x3793A651, 0x3352BBE6, 0x3E119D3F, 0x3AD08088, 0x2497D08D, 0x2056CD3A,
        0x2D15EBE3, 0x29D4F654, 0xC5A92679, 0xC1683BCE, 0xCC2B1D17, 0xC8EA00A0,
        0xD6AD50A5, 0xD26C4D12, 0xDF2F6BCB, 0xDBEE767C, 0xE3A1CBC1, 0xE760D676,
        0xEA23F0AF, 0xEEE2ED18, 0xF0A5BD1D, 0xF464A0AA, 0xF9278673, 0xFDE69BC4,
        0x89B8FD09, 0x8D79E0BE, 0x803AC667, 0x84FBDBD0, 0x9ABC8BD5, 0x9E7D9662,
        0x933EB0BB, 0x97FFAD0C, 0xAFB010B1, 0xAB710D06, 0xA6322BDF, 0xA2F33668,
        0xBCB4666D, 0xB8757BDA, 0xB5365D03, 0xB1F740B4
        );

    my $crc = 0xffffffff;
    for ($i = 0; $i < $nread; $i++) {
        # get the numeric for the byte of the $i index
        $buf = ord(substr($buffer, $i, 1));

        $crc = ($crc << 8) ^ $crc_table[(($crc >> 24) ^ $buf) & 0xFF];

    #    printf("%08x\n", $crc);
    }

    return $crc;

}

sub singlefile {
    my ($file) = @_;
    my $hash;

    if($file =~ /\.ogg$/i) {
        $hash = get_oggtag($file);

        # CRC from 0 until we figure out exactly where the audio data starts!
        $hash->{FILECRC} = crc32($file, 0);
    }
    else {
        $hash = get_mp3tag($file);

        my $info = get_mp3info($file);
        
        $hash->{FILECRC} = crc32($file, $info->{headersize});
    }

    return $hash; # a hash reference
}

my $maxsongperalbum;

sub dodir {
    my ($dir)=@_;

    print "$dir\n";

    # getdir() returns all entries in the given dir
    my @a = getdir($dir);

    # extractmp3 filters out only the mp3 files from all given entries
    my @m = extractmp3($dir, @a);

    my $f;

    for $f (sort @m) {
        
        my $id3 = singlefile("$dir/$f");

        # ARTIST
        # COMMENT
        # ALBUM
        # TITLE
        # GENRE
        # TRACKNUM
        # YEAR

        # don't index songs without tags
	# um. yes we do.
        if (not defined $$id3{'ARTIST'} and
            not defined $$id3{'ALBUM'} and
            not defined $$id3{'TITLE'})
        {
            next;
        }

        #printf "Artist: %s\n", $id3->{'ARTIST'};
        my $path = "$dir/$f";
        if ($strip ne "" and $path =~ /^$strip(.*)/) {
            $path = $1;
        }

	if ($add ne "") {
	    $path = $add . $path;
	}

        # Only use one case-variation of each album/artist
        if (exists($lcalbums{lc($$id3{'ALBUM'})})) {
            # if another album with different case exists
            # use that case (store it in $$id3{'ALBUM'}
            $$id3{'ALBUM'} = $lcalbums{lc($$id3{'ALBUM'})};
        }
        else {
            # else create a new entry in the hash
            $lcalbums{lc($$id3{'ALBUM'})} = $$id3{'ALBUM'};
        }
        
        if (exists($lcartists{lc($$id3{'ARTIST'})})) {
            $$id3{'ARTIST'} = $lcartists{lc($$id3{'ARTIST'})};
        }
        else {
            $lcartists{lc($$id3{'ARTIST'})} = $$id3{'ARTIST'};
        }

        $entries{$path}= $id3;
        $artists{$id3->{'ARTIST'}}++ if($id3->{'ARTIST'});
        $genres{$id3->{'GENRE'}}++ if($id3->{'GENRE'});
        $years{$id3->{'YEAR'}}++ if($id3->{'YEAR'});

        # fallback names
        $$id3{'ARTIST'} = "<no artist tag>" if ($$id3{'ARTIST'} eq "");
	# Fall back on the directory name (not full path dirname),
	# if no album tag
	if ($dirisalbum) {
	  if($dir2albumname{$dir} eq "") {
	  	$dir2albumname{$dir} = $$id3{'ALBUM'};
	  }
	  elsif($dir2albumname{$dir} ne $$id3{'ALBUM'}) {
	        $dir2albumname{$dir} = (split m[/], $dir)[-1];
	  }
	}
	# if no directory
	if ($dirisalbumname) {
	  $$id3{'ALBUM'} = (split m[/], $dir)[-1] if ($$id3{'ALBUM'} eq "");
	}
	$$id3{'ALBUM'} = "<no album tag>" if ($$id3{'ALBUM'} eq "");
	# fall back on basename of the file if no title tag.
	my $base;
	($base = $f) =~ s/\.\w+$//;
        $$id3{'TITLE'} =  $base if ($$id3{'TITLE'} eq "");

        # Append dirname, to handle multi-artist albums
        $$id3{'DIR'} = $dir;
        my $albumid;
	if ($dirisalbum) {
	  $albumid=$$id3{'DIR'};
	}
	else {
	  $albumid= $id3->{'ALBUM'}."___".$$id3{'DIR'};
	}
	#printf "album id: %s\n", $albumid;

#        if($id3->{'ALBUM'}."___".$id3->{'DIR'} ne "<no album tag>___<no artist tag>") {
            my $num = ++$albums{$albumid};
            if($num > $maxsongperalbum) {
                $maxsongperalbum = $num;
                $longestalbum = $albumid;
            }
            $album2songs{$albumid}{$$id3{TITLE}} = $id3;
	    if($dirisalbum) {
              $artist2albums{$$id3{ARTIST}}{$$id3{DIR}} = $id3;
	    }
	    else {
	      $artist2albums{$$id3{ARTIST}}{$$id3{ALBUM}} = $id3;
	    }
#        }
    }

    if($dirisalbum and $dir2albumname{$dir} eq "") {
       $dir2albumname{$dir} = (split m[/], $dir)[-1];
       printf "%s\n", $dir2albumname{$dir};
    }

    # extractdirs filters out only subdirectories from all given entries
    my @d = extractdirs($dir, @a);

    for $d (sort @d) {
        $dir =~ s|/$||;
        dodir("$dir/$d");
    }
}


dodir($dir);
print "\n";

print "File name table\n" if ($verbose);
for(sort keys %entries) {
    printf("  %s\n", $_) if ($verbose);
    my $l = length($_);
    if($l > $maxfilelen) {
       $maxfilelen = $l;
       $longestfilename = $_;
    }		  
}
$maxfilelen++; # include zero termination byte
while($maxfilelen&3) {
    $maxfilelen++;
}    

my $maxsonglen = 0;
my $sc;
print "\nSong title table\n" if ($verbose);

for(sort {uc($entries{$a}->{'TITLE'}) cmp uc($entries{$b}->{'TITLE'})} keys %entries) {
    printf("  %s\n", $entries{$_}->{'TITLE'} ) if ($verbose);
    my $l = length($entries{$_}->{'TITLE'});
    if($l > $maxsonglen) {
        $maxsonglen = $l;
        $longestsong = $entries{$_}->{'TITLE'};
    }
}
$maxsonglen++; # include zero termination byte
while($maxsonglen&3) {
    $maxsonglen++;
}

my $maxartistlen = 0;
print "\nArtist table\n" if ($verbose);
my $i=0;
my %artistcount;
for(sort {uc($a) cmp uc($b)} keys %artists) {
    printf("  %s: %d\n", $_, $i) if ($verbose);
    $artistcount{$_}=$i++;
    my $l = length($_);
    if($l > $maxartistlen) {
        $maxartistlen = $l;
        $longestartist = $_;
    }

    $l = scalar keys %{$artist2albums{$_}};
    if ($l > $maxalbumsperartist) {
        $maxalbumsperartist = $l;
	$longestartistalbum = $_;
    }
}
$maxartistlen++; # include zero termination byte
while($maxartistlen&3) {
    $maxartistlen++;
}

print "\nGenre table\n" if ($verbose);
for(sort keys %genres) {
  my $l = length($_);
  if($l > $maxgenrelen) {
    $maxgenrelen = $l;
    $longestgenrename = $_;
  }
}

$maxgenrelen++; #include zero termination byte
while($maxgenrelen&3) {
    $maxgenrelen++;
}
    

if ($verbose) {
    print "\nYear table\n";
    for(sort keys %years) {
        printf("  %s\n", $_);
    }
}

print "\nAlbum table\n" if ($verbose);
my $maxalbumlen = 0;
my %albumcount;
$i=0;
my @albumssort;
if($dirisalbum) {
 @albumssort = sort {uc($dir2albumname{$a}) cmp uc($dir2albumname{$b})} keys %albums;
}
else {
 @albumssort = sort {uc($a) cmp uc($b)} keys %albums;
}
for(@albumssort) {
    my @moo=split(/___/, $_);
    printf("  %s\n", $moo[0]) if ($verbose);
    $albumcount{$_} = $i++;
    my $l;
    if($dirisalbum) {
     $l = length($dir2albumname{$_});
    }
    else {
     $l = length($moo[0]);
    }
    if($l > $maxalbumlen) {
        $maxalbumlen = $l;
	if($dirisalbum) {
	  $longestalbumname = $dir2albumname{$_};
	}
	else {
	  $longestalbumname = $moo[0];
	}
    }
}
$maxalbumlen++; # include zero termination byte
while($maxalbumlen&3) {
    $maxalbumlen++;
}



sub dumpshort {
    my ($num)=@_;

    #    print "int: $num\n";
    
    print DB pack "n", $num;
}

sub dumpint {
    my ($num)=@_;

#    print "int: $num\n";

    print DB pack "N", $num;
}

if (!scalar keys %entries) {
    print "No songs found. Did you specify the right --path ?\n";
    print "Use the --help parameter to see all options.\n";
    exit;
}

if ($db) {
    my $songentrysize = $maxsonglen + 12 + $maxgenrelen+ 12;
    my $albumentrysize = $maxalbumlen + 4 + $maxsongperalbum*4;
    my $artistentrysize = $maxartistlen + $maxalbumsperartist*4;
    my $fileentrysize = $maxfilelen + 12;

    printf "Number of artists        : %d\n", scalar keys %artists;
    printf "Number of albums         : %d\n", scalar keys %albums;
    printf "Number of songs / files  : %d\n", scalar keys %entries;
    print "Max artist length    : $maxartistlen ($longestartist)\n";
    print "Max album length     : $maxalbumlen ($longestalbumname)\n";
    print "Max song length      : $maxsonglen ($longestsong)\n";
    print "Max songs per album  : $maxsongperalbum ($longestalbum)\n";
    print "Max albums per artist: $maxalbumsperartist ($longestartistalbum)\n";
    print "Max genre length     : $maxgenrelen ($longestgenrename)\n";
    print "Max file length      : $maxfilelen ($longestfilename)\n";
    print "Database version: $dbver\n" if ($verbose);
    print "Song Entry Size : $songentrysize ($maxsonglen + 12 + $maxgenrelen + 4)\n" if ($verbose);
    print "Album Entry Size: $albumentrysize ($maxalbumlen + 4 + $maxsongperalbum * 4)\n" if ($verbose);
    print "Artist Entry Size: $artistentrysize ($maxartistlen + $maxalbumsperartist * 4)\n" if ($verbose);
    print "File Entry Size: $fileentrysize ($maxfilelen + 12)\n" if ($verbose);
    

    open(DB, ">$db") || die "couldn't make $db";
    binmode(DB);
    printf DB "RDB%c", $dbver;
    
    $pathindex = 68; # paths always start at index 68

    $artistindex = $pathindex;

    # set total size of song title table
    $sc = scalar(keys %entries) * $songentrysize;
    my $ac = scalar(keys %albums) * $albumentrysize;
    my $arc = scalar(keys %artists) * $artistentrysize;
    $albumindex = $artistindex + $arc; # arc is size of all artists
    $songindex = $albumindex + $ac; # ac is size of all albums
    my $fileindex = $songindex + $sc; # sc is size of all songs
    
    dumpint($artistindex); # file position index of artist table
    dumpint($albumindex); # file position index of album table
    dumpint($songindex); # file position index of song table
    dumpint($fileindex); # file position index of file table
    dumpint(scalar(keys %artists)); # number of artists
    dumpint(scalar(keys %albums)); # number of albums
    dumpint(scalar(keys %entries)); # number of songs
    dumpint(scalar(keys %entries)); # number of files
    dumpint($maxartistlen); # length of artist name field
    dumpint($maxalbumlen); # length of album name field
    dumpint($maxsonglen); # length of song name field		
    dumpint($maxgenrelen); #length of genre field
    dumpint($maxfilelen); # length of file field
    dumpint($maxsongperalbum); # number of entries in songs-per-album array
    dumpint($maxalbumsperartist); # number of entries in albums-per-artist array
    dumpint(-1); # rundb dirty

    #### TABLE of artists ###
    # name of artist1
    # pointers to albums of artist1

    for (sort {uc($a) cmp uc($b)} keys %artists) {
        my $artist = $_;
        my $str =  $_."\x00" x ($maxartistlen - length($_));
        print DB $str;

        for (sort keys %{$artist2albums{$artist}}) {
            my $id3 = $artist2albums{$artist}{$_};
            my $a;
	    if($dirisalbum) {
	      $a = $albumcount{"$$id3{'DIR'}"} * $albumentrysize;
	    }
	    else {
	      $a = $albumcount{"$$id3{'ALBUM'}___$$id3{'DIR'}"} * $albumentrysize;
	    }
            dumpint($a + $albumindex);
        }

        for (scalar keys %{$artist2albums{$artist}} .. $maxalbumsperartist-1) {
            print DB "\x00\x00\x00\x00";
        }

    }

   ### Build song offset info.
   my $offset = $songindex;
   for(sort {uc($entries{$a}->{'TITLE'}) cmp uc($entries{$b}->{'TITLE'})} keys %entries) {
     my $id3 = $entries{$_};
     $$id3{'songoffset'} = $offset;
     $offset += $songentrysize;
   }
		    

    #### TABLE of albums ###
    # name of album1
    # pointers to artists of album1
    # pointers to songs on album1

    for(@albumssort) {
        my $albumid = $_;
	my @moo=split(/___/, $_);
        my $t;
        my $str;
	if($dirisalbum) {
  	  $t = $dir2albumname{$albumid};
	}
	else {
	  $t = $moo[0];
	}
	$str =  $t."\x00" x ($maxalbumlen - length($t));
	print DB $str;

        my @songlist = keys %{$album2songs{$albumid}};
        my $id3 = $album2songs{$albumid}{$songlist[0]};

	#printf "(d) albumid: %s artist: %s\n",$albumid, $id3->{'ARTIST'};

        my $aoffset = $artistcount{$id3->{'ARTIST'}} * $artistentrysize;
	dumpint($aoffset + $artistindex); # pointer to artist of this album
		
        if (defined $id3->{'TRACKNUM'}) {
            @songlist = sort {
                $album2songs{$albumid}{$a}->{'TRACKNUM'} <=>
                    $album2songs{$albumid}{$b}->{'TRACKNUM'}
            } @songlist;
        }
        else {
            @songlist = sort @songlist;
        }

        for (@songlist) {
            my $id3 = $album2songs{$albumid}{$_};
            dumpint($$id3{'songoffset'});
        }

        for (scalar keys %{$album2songs{$albumid}} .. $maxsongperalbum-1) {
            print DB "\x00\x00\x00\x00";
        }
    }

    #### Build filename offset info
    my $l=$fileindex;
    my %filenamepos;
    for $f (sort {uc($a) cmp uc($b)} keys %entries) {
        $filenamepos{$f}= $l;
	$l += $fileentrysize;
    }
		
    #### TABLE of songs ###
    # title of song1
    # pointer to artist of song1
    # pointer to album of song1
    # pointer to filename of song1

    for(sort {uc($entries{$a}->{'TITLE'}) cmp uc($entries{$b}->{'TITLE'})} keys %entries) {
        my $f = $_;
        my $id3 = $entries{$f};
        my $t = $id3->{'TITLE'};
	my $g = $id3->{'GENRE'};
        my $str = $t."\x00" x ($maxsonglen- length($t));

        print DB $str; # title
	$str = $g."\x00" x ($maxgenrelen - length($g));

        my $a = $artistcount{$id3->{'ARTIST'}} * $artistentrysize;
        dumpint($a + $artistindex); # pointer to artist of this song

	if($dirisalbum) {
	  $a = $albumcount{"$$id3{DIR}"} * $albumentrysize;
	}
	else {
          $a = $albumcount{"$$id3{ALBUM}___$$id3{DIR}"} * $albumentrysize;
	}
        dumpint($a + $albumindex); # pointer to album of this song

        # pointer to filename of this song
        dumpint($filenamepos{$f});
	print DB $str; #genre
	dumpshort(-1);
	dumpshort($id3->{'YEAR'});
    dumpint(-1);
    dumpshort($id3->{'TRACKNUM'});
    dumpshort(-1);
    }

    #### TABLE of file names ###
    # path1

    for $f (sort {uc($a) cmp uc($b)} %entries) {
        my $str = $f."\x00" x ($maxfilelen- length($f));
	my $id3 = $entries{$f}; 
        print DB $str;
        #print STDERR "CRC: ".."\n";
        dumpint($id3->{'FILECRC'});    # CRC32 of the song data
        dumpint($id3->{'songoffset'}); # offset to song data
        dumpint(-1); # offset to rundb data. always set to -1. this is updated by rockbox code on the player.
    }

    close(DB);
}

###
### Here follows module MP3::Info Copyright (c) 1998-2004 Chris Nandor
### Modified by Björn Stenberg to remove use of external libraries
###

our(
	@ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS, $VERSION, $REVISION,
	@mp3_genres, %mp3_genres, @winamp_genres, %winamp_genres, $try_harder,
	@t_bitrate, @t_sampling_freq, @frequency_tbl, %v1_tag_fields,
	@v1_tag_names, %v2_tag_names, %v2_to_v1_names, $AUTOLOAD,
	@mp3_info_fields
);

@ISA = 'Exporter';
@EXPORT = qw(
	set_mp3tag get_mp3tag get_mp3info remove_mp3tag
	use_winamp_genres
);
@EXPORT_OK = qw(@mp3_genres %mp3_genres use_mp3_utf8);
%EXPORT_TAGS = (
	genres	=> [qw(@mp3_genres %mp3_genres)],
	utf8	=> [qw(use_mp3_utf8)],
	all	=> [@EXPORT, @EXPORT_OK]
);

# $Id$
($REVISION) = ' $Revision$ ' =~ /\$Revision:\s+([^\s]+)/;
$VERSION = '1.02';

=pod

=head1 NAME

MP3::Info - Manipulate / fetch info from MP3 audio files

=head1 SYNOPSIS

	#!perl -w
	use MP3::Info;
	my $file = 'Pearls_Before_Swine.mp3';
	set_mp3tag($file, 'Pearls Before Swine', q"77's",
		'Sticks and Stones', '1990',
		q"(c) 1990 77's LTD.", 'rock & roll');

	my $tag = get_mp3tag($file) or die "No TAG info";
	$tag->{GENRE} = 'rock';
	set_mp3tag($file, $tag);

	my $info = get_mp3info($file);
	printf "$file length is %d:%d\n", $info->{MM}, $info->{SS};

=cut

{
	my $c = -1;
	# set all lower-case and regular-cased versions of genres as keys
	# with index as value of each key
	%mp3_genres = map {($_, ++$c, lc, $c)} @mp3_genres;

	# do it again for winamp genres
	$c = -1;
	%winamp_genres = map {($_, ++$c, lc, $c)} @winamp_genres;
}

=pod

	my $mp3 = new MP3::Info $file;
	$mp3->title('Perls Before Swine');
	printf "$file length is %s, title is %s\n",
		$mp3->time, $mp3->title;


=head1 DESCRIPTION

=over 4

=item $mp3 = MP3::Info-E<gt>new(FILE)

OOP interface to the rest of the module.  The same keys
available via get_mp3info and get_mp3tag are available
via the returned object (using upper case or lower case;
but note that all-caps "VERSION" will return the module
version, not the MP3 version).

Passing a value to one of the methods will set the value
for that tag in the MP3 file, if applicable.

=cut

sub new {
	my($pack, $file) = @_;

	my $info = get_mp3info($file) or return undef;
	my $tags = get_mp3tag($file) || { map { ($_ => undef) } @v1_tag_names };
	my %self = (
		FILE		=> $file,
		TRY_HARDER	=> 0
	);

	@self{@mp3_info_fields, @v1_tag_names, 'file'} = (
		@{$info}{@mp3_info_fields},
		@{$tags}{@v1_tag_names},
		$file
	);

	return bless \%self, $pack;
}

sub can {
	my $self = shift;
	return $self->SUPER::can(@_) unless ref $self;
	my $name = uc shift;
	return sub { $self->$name(@_) } if exists $self->{$name};
	return undef;
}

sub AUTOLOAD {
	my($self) = @_;
	(my $name = uc $AUTOLOAD) =~ s/^.*://;

	if (exists $self->{$name}) {
		my $sub = exists $v1_tag_fields{$name}
			? sub {
				if (defined $_[1]) {
					$_[0]->{$name} = $_[1];
					set_mp3tag($_[0]->{FILE}, $_[0]);
				}
				return $_[0]->{$name};
			}
			: sub {
				return $_[0]->{$name}
			};

		*{$AUTOLOAD} = $sub;
		goto &$AUTOLOAD;

	} else {
		warn(sprintf "No method '$name' available in package %s.",
			__PACKAGE__);
	}
}

sub DESTROY {

}


=item use_mp3_utf8([STATUS])

Tells MP3::Info to (or not) return TAG info in UTF-8.
TRUE is 1, FALSE is 0.  Default is FALSE.

Will only be able to it on if Unicode::String is available.  ID3v2
tags will be converted to UTF-8 according to the encoding specified
in each tag; ID3v1 tags will be assumed Latin-1 and converted
to UTF-8.

Function returns status (TRUE/FALSE).  If no argument is supplied,
or an unaccepted argument is supplied, function merely returns status.

This function is not exported by default, but may be exported
with the C<:utf8> or C<:all> export tag.

=cut

my $unicode_module = eval { require Unicode::String };
my $UNICODE = 0;

sub use_mp3_utf8 {
	my($val) = @_;
	if ($val == 1) {
		$UNICODE = 1 if $unicode_module;
	} elsif ($val == 0) {
		$UNICODE = 0;
	}
	return $UNICODE;
}

=pod

=item use_winamp_genres()

Puts WinAmp genres into C<@mp3_genres> and C<%mp3_genres>
(adds 68 additional genres to the default list of 80).
This is a separate function because these are non-standard
genres, but they are included because they are widely used.

You can import the data structures with one of:

	use MP3::Info qw(:genres);
	use MP3::Info qw(:DEFAULT :genres);
	use MP3::Info qw(:all);

=cut

sub use_winamp_genres {
	%mp3_genres = %winamp_genres;
	@mp3_genres = @winamp_genres;
	return 1;
}

=pod

=pod

=item get_mp3tag (FILE [, VERSION, RAW_V2])

Returns hash reference containing tag information in MP3 file.  The keys
returned are the same as those supplied for C<set_mp3tag>, except in the
case of RAW_V2 being set.

If VERSION is C<1>, the information is taken from the ID3v1 tag (if present).
If VERSION is C<2>, the information is taken from the ID3v2 tag (if present).
If VERSION is not supplied, or is false, the ID3v1 tag is read if present, and
then, if present, the ID3v2 tag information will override any existing ID3v1
tag info.

If RAW_V2 is C<1>, the raw ID3v2 tag data is returned, without any manipulation
of text encoding.  The key name is the same as the frame ID (ID to name mappings
are in the global %v2_tag_names).

If RAW_V2 is C<2>, the ID3v2 tag data is returned, manipulating for Unicode if
necessary, etc.  It also takes multiple values for a given key (such as comments)
and puts them in an arrayref.

If the ID3v2 version is older than ID3v2.2.0 or newer than ID3v2.4.0, it will
not be read.

Strings returned will be in Latin-1, unless UTF-8 is specified (L<use_mp3_utf8>),
(unless RAW_V2 is C<1>).

Also returns a TAGVERSION key, containing the ID3 version used for the returned
data (if TAGVERSION argument is C<0>, may contain two versions).

=cut

sub get_mp3tag {
    my($file, $ver, $raw_v2) = @_;
    my($tag, $v1, $v2, $v2h, %info, @array, $fh);
    $raw_v2 ||= 0;
    $ver = !$ver ? 0 : ($ver == 2 || $ver == 1) ? $ver : 0;

    if (not (defined $file && $file ne '')) {
        $@ = "No file specified";
        return undef;
    }

    if (not -s $file) {
        $@ = "File is empty";
        return undef;
    }

    if (ref $file) { # filehandle passed
        $fh = $file;
    } else {
        $fh = gensym;
        if (not open $fh, "< $file\0") {
            $@ = "Can't open $file: $!";
            return undef;
        }
    }

    binmode $fh;

    if ($ver < 2) {
        seek $fh, -128, 2;
        while(defined(my $line = <$fh>)) { $tag .= $line }

        if ($tag =~ /^TAG/) {
            $v1 = 1;
            if (substr($tag, -3, 2) =~ /\000[^\000]/) {
                (undef, @info{@v1_tag_names}) =
                    (unpack('a3a30a30a30a4a28', $tag),
                     ord(substr($tag, -2, 1)),
                     $mp3_genres[ord(substr $tag, -1)]);
                $info{TAGVERSION} = 'ID3v1.1';
            } else {
                (undef, @info{@v1_tag_names[0..4, 6]}) =
                    (unpack('a3a30a30a30a4a30', $tag),
                     $mp3_genres[ord(substr $tag, -1)]);
                $info{TAGVERSION} = 'ID3v1';
            }
            if ($UNICODE) {
                for my $key (keys %info) {
                    next unless $info{$key};
                    my $u = Unicode::String::latin1($info{$key});
                    $info{$key} = $u->utf8;
                }
            }
        } elsif ($ver == 1) {
            _close($file, $fh);
            $@ = "No ID3v1 tag found";
            return undef;
        }
    }

    ($v2, $v2h) = _get_v2tag($fh);

    unless ($v1 || $v2) {
        _close($file, $fh);
        $@ = "No ID3 tag found";
        return undef;
    }

    if (($ver == 0 || $ver == 2) && $v2) {
        if ($raw_v2 == 1 && $ver == 2) {
            %info = %$v2;
            $info{TAGVERSION} = $v2h->{version};
        } else {
            my $hash = $raw_v2 == 2 ? { map { ($_, $_) } keys %v2_tag_names } : \%v2_to_v1_names;
            for my $id (keys %$hash) {
                if (exists $v2->{$id}) {
                    if ($id =~ /^TCON?$/ && $v2->{$id} =~ /^.?\((\d+)\)/) {
                        $info{$hash->{$id}} = $mp3_genres[$1];
                    } else {
                        my $data1 = $v2->{$id};

                        # this is tricky ... if this is an arrayref, we want
                        # to only return one, so we pick the first one.  but
                        # if it is a comment, we pick the first one where the
                        # first charcter after the language is NULL and not an
                        # additional sub-comment, because that is most likely
                        # to be the user-supplied comment

                        if (ref $data1 && !$raw_v2) {
                            if ($id =~ /^COMM?$/) {
                                my($newdata) = grep /^(....\000)/, @{$data1};
                                $data1 = $newdata || $data1->[0];
                            } else {
                                $data1 = $data1->[0];
                            }
                        }

                        $data1 = [ $data1 ] if ! ref $data1;

                        for my $data (@$data1) {
                            $data =~ s/^(.)//; # strip first char (text encoding)
                            my $encoding = $1;
                            my $desc;
                            if ($id =~ /^COM[M ]?$/) {
                                $data =~ s/^(?:...)//;		# strip language
                                $data =~ s/^(.*?)\000+//;	# strip up to first NULL(s),
                                # for sub-comment
                                $desc = $1;
                            }
                            
                            if ($UNICODE) {
                                if ($encoding eq "\001" || $encoding eq "\002") {  # UTF-16, UTF-16BE
                                    my $u = Unicode::String::utf16($data);
                                    $data = $u->utf8;
                                    $data =~ s/^\xEF\xBB\xBF//;	# strip BOM
                                } elsif ($encoding eq "\000") {
                                    my $u = Unicode::String::latin1($data);
                                    $data = $u->utf8;
                                }
                            }
                            
                            if ($raw_v2 == 2 && $desc) {
                                $data = { $desc => $data };
                            }
                            
                            if ($raw_v2 == 2 && exists $info{$hash->{$id}}) {
                                if (ref $info{$hash->{$id}} eq 'ARRAY') {
                                    push @{$info{$hash->{$id}}}, $data;
                                } else {
                                    $info{$hash->{$id}} = [ $info{$hash->{$id}}, $data ];
                                }
                            } else {
                                $info{$hash->{$id}} = $data;
                            }
                        }
                    }
                }
            }
            if ($ver == 0 && $info{TAGVERSION}) {
                $info{TAGVERSION} .= ' / ' . $v2h->{version};
            } else {
                $info{TAGVERSION} = $v2h->{version};
            }
        }
    }

    unless ($raw_v2 && $ver == 2) {
        foreach my $key (keys %info) {
            if (defined $info{$key}) {
                $info{$key} =~ s/\000+.*//g;
                $info{$key} =~ s/\s+$//;
            }
        }
        
        for (@v1_tag_names) {
            $info{$_} = '' unless defined $info{$_};
        }
    }

    if (keys %info && exists $info{GENRE} && ! defined $info{GENRE}) {
        $info{GENRE} = '';
    }

    _close($file, $fh);

    return keys %info ? {%info} : undef;
}

sub _get_v2tag {
    my($fh) = @_;
    my($off, $myseek, $myseek_22, $myseek_23, $v2, $h, $hlen, $num);
    $h = {};

    $v2 = _get_v2head($fh) or return;
    if ($v2->{major_version} < 2) {
        warn "This is $v2->{version}; " .
            "ID3v2 versions older than ID3v2.2.0 not supported\n"
            if $^W;
        return;
    }

    if ($v2->{major_version} == 2) {
        $hlen = 6;
        $num = 3;
    } else {
        $hlen = 10;
        $num = 4;
    }

    $myseek = sub {
        seek $fh, $off, 0;
        read $fh, my($bytes), $hlen;
        return unless $bytes =~ /^([A-Z0-9]{$num})/
            || ($num == 4 && $bytes =~ /^(COM )/);  # stupid iTunes
        my($id, $size) = ($1, $hlen);
        my @bytes = reverse unpack "C$num", substr($bytes, $num, $num);
        for my $i (0 .. ($num - 1)) {
            $size += $bytes[$i] * 256 ** $i;
        }
        return($id, $size);
    };

    $off = $v2->{ext_header_size} + 10;

    while ($off < $v2->{tag_size}) {
        my($id, $size) = &$myseek or last;
        seek $fh, $off + $hlen, 0;
        read $fh, my($bytes), $size - $hlen;
        if (exists $h->{$id}) {
            if (ref $h->{$id} eq 'ARRAY') {
                push @{$h->{$id}}, $bytes;
            } else {
                $h->{$id} = [$h->{$id}, $bytes];
            }
        } else {
            $h->{$id} = $bytes;
        }
        $off += $size;
    }

    return($h, $v2);
}


=pod

=item get_mp3info (FILE)

Returns hash reference containing file information for MP3 file.
This data cannot be changed.  Returned data:

	VERSION		MPEG audio version (1, 2, 2.5)
	LAYER		MPEG layer description (1, 2, 3)
	STEREO		boolean for audio is in stereo

	VBR		boolean for variable bitrate
	BITRATE		bitrate in kbps (average for VBR files)
	FREQUENCY	frequency in kHz
	SIZE		bytes in audio stream

	SECS		total seconds
	MM		minutes
	SS		leftover seconds
	MS		leftover milliseconds
	TIME		time in MM:SS

	COPYRIGHT	boolean for audio is copyrighted
	PADDING		boolean for MP3 frames are padded
	MODE		channel mode (0 = stereo, 1 = joint stereo,
			2 = dual channel, 3 = single channel)
	FRAMES		approximate number of frames
	FRAME_LENGTH	approximate length of a frame
	VBR_SCALE	VBR scale from VBR header

On error, returns nothing and sets C<$@>.

=cut

sub get_mp3info {
    my($file) = @_;
    my($off, $myseek, $byte, $eof, $h, $tot, $fh);

    if (not (defined $file && $file ne '')) {
        $@ = "No file specified";
        return undef;
    }

    if (not -s $file) {
        $@ = "File is empty";
        return undef;
    }

    if (ref $file) { # filehandle passed
        $fh = $file;
    } else {
        $fh = gensym;
        if (not open $fh, "< $file\0") {
            $@ = "Can't open $file: $!";
            return undef;
        }
    }

    $off = 0;
    $tot = 4096;

    $myseek = sub {
        seek $fh, $off, 0;
        read $fh, $byte, 4;
    };

    binmode $fh;
    &$myseek;

    if ($off == 0) {
        if (my $id3v2 = _get_v2head($fh)) {
            $tot += $off += $id3v2->{tag_size};
            &$myseek;
        }
    }

    $h = _get_head($byte);
    until (_is_mp3($h)) {
        $off++;
        &$myseek;
        $h = _get_head($byte);
        if ($off > $tot && !$try_harder) {
            _close($file, $fh);
            $@ = "Couldn't find MP3 header (perhaps set " .
                '$MP3::Info::try_harder and retry)';
            return undef;
        }
    }

    my $vbr = _get_vbr($fh, $h, \$off);

    $h->{headersize}=$off; # data size prepending the actual mp3 data

    seek $fh, 0, 2;
    $eof = tell $fh;
    seek $fh, -128, 2;
    $off += 128 if <$fh> =~ /^TAG/ ? 1 : 0;

    _close($file, $fh);

    $h->{size} = $eof - $off;

    return _get_info($h, $vbr);
}

sub _get_info {
    my($h, $vbr) = @_;
    my $i;

    $i->{VERSION}	= $h->{IDR} == 2 ? 2 : $h->{IDR} == 3 ? 1 :
        $h->{IDR} == 0 ? 2.5 : 0;
    $i->{LAYER}	= 4 - $h->{layer};
    $i->{VBR}	= defined $vbr ? 1 : 0;

    $i->{COPYRIGHT}	= $h->{copyright} ? 1 : 0;
    $i->{PADDING}	= $h->{padding_bit} ? 1 : 0;
    $i->{STEREO}	= $h->{mode} == 3 ? 0 : 1;
    $i->{MODE}	= $h->{mode};

    $i->{SIZE}	= $vbr && $vbr->{bytes} ? $vbr->{bytes} : $h->{size};

    my $mfs		= $h->{fs} / ($h->{ID} ? 144000 : 72000);
    $i->{FRAMES}	= int($vbr && $vbr->{frames}
                              ? $vbr->{frames}
                              : $i->{SIZE} / $h->{bitrate} / $mfs
                              );

    if ($vbr) {
        $i->{VBR_SCALE}	= $vbr->{scale} if $vbr->{scale};
        $h->{bitrate}	= $i->{SIZE} / $i->{FRAMES} * $mfs;
        if (not $h->{bitrate}) {
            $@ = "Couldn't determine VBR bitrate";
            return undef;
        }
    }

    $h->{'length'}	= ($i->{SIZE} * 8) / $h->{bitrate} / 10;
    $i->{SECS}	= $h->{'length'} / 100;
    $i->{MM}	= int $i->{SECS} / 60;
    $i->{SS}	= int $i->{SECS} % 60;
    $i->{MS}	= (($i->{SECS} - ($i->{MM} * 60) - $i->{SS}) * 1000);
#	$i->{LF}	= ($i->{MS} / 1000) * ($i->{FRAMES} / $i->{SECS});
#	int($i->{MS} / 100 * 75);  # is this right?
    $i->{TIME}	= sprintf "%.2d:%.2d", @{$i}{'MM', 'SS'};

    $i->{BITRATE}		= int $h->{bitrate};
	# should we just return if ! FRAMES?
    $i->{FRAME_LENGTH}	= int($h->{size} / $i->{FRAMES}) if $i->{FRAMES};
    $i->{FREQUENCY}		= $frequency_tbl[3 * $h->{IDR} + $h->{sampling_freq}];

    $i->{headersize} = $h->{headersize};

    return $i;
}

sub _get_head {
    my($byte) = @_;
    my($bytes, $h);

    $bytes = _unpack_head($byte);
    @$h{qw(IDR ID layer protection_bit
           bitrate_index sampling_freq padding_bit private_bit
           mode mode_extension copyright original
           emphasis version_index bytes)} = (
		($bytes>>19)&3, ($bytes>>19)&1, ($bytes>>17)&3, ($bytes>>16)&1,
		($bytes>>12)&15, ($bytes>>10)&3, ($bytes>>9)&1, ($bytes>>8)&1,
		($bytes>>6)&3, ($bytes>>4)&3, ($bytes>>3)&1, ($bytes>>2)&1,
		$bytes&3, ($bytes>>19)&3, $bytes
	);

    $h->{bitrate} = $t_bitrate[$h->{ID}][3 - $h->{layer}][$h->{bitrate_index}];
    $h->{fs} = $t_sampling_freq[$h->{IDR}][$h->{sampling_freq}];

    return $h;
}

sub _is_mp3 {
    my $h = $_[0] or return undef;
    return ! (	# all below must be false
                $h->{bitrate_index} == 0
                ||
                $h->{version_index} == 1
                ||
		($h->{bytes} & 0xFFE00000) != 0xFFE00000
                ||
		!$h->{fs}
                ||
		!$h->{bitrate}
                ||
                $h->{bitrate_index} == 15
                ||
		!$h->{layer}
                ||
                $h->{sampling_freq} == 3
                ||
                $h->{emphasis} == 2
                ||
		!$h->{bitrate_index}
                ||
		($h->{bytes} & 0xFFFF0000) == 0xFFFE0000
                ||
		($h->{ID} == 1 && $h->{layer} == 3 && $h->{protection_bit} == 1)
                ||
		($h->{mode_extension} != 0 && $h->{mode} != 1)
                );
}

sub _get_vbr {
    my($fh, $h, $roff) = @_;
    my($off, $bytes, @bytes, $myseek, %vbr);

    $off = $$roff;
    @_ = ();	# closure confused if we don't do this

    $myseek = sub {
        my $n = $_[0] || 4;
        seek $fh, $off, 0;
        read $fh, $bytes, $n;
        $off += $n;
    };

    $off += 4;

    if ($h->{ID}) {	# MPEG1
        $off += $h->{mode} == 3 ? 17 : 32;
    } else {	# MPEG2
        $off += $h->{mode} == 3 ? 9 : 17;
    }

    &$myseek;
    return unless $bytes eq 'Xing';

    &$myseek;
    $vbr{flags} = _unpack_head($bytes);

    if ($vbr{flags} & 1) {
        &$myseek;
        $vbr{frames} = _unpack_head($bytes);
    }

    if ($vbr{flags} & 2) {
        &$myseek;
        $vbr{bytes} = _unpack_head($bytes);
    }

    if ($vbr{flags} & 4) {
        $myseek->(100);
# Not used right now ...
#		$vbr{toc} = _unpack_head($bytes);
    }

    if ($vbr{flags} & 8) { # (quality ind., 0=best 100=worst)
        &$myseek;
        $vbr{scale} = _unpack_head($bytes);
    } else {
        $vbr{scale} = -1;
    }

    $$roff = $off;
    return \%vbr;
}

sub _get_v2head {
    my $fh = $_[0] or return;
    my($h, $bytes, @bytes);

    # check first three bytes for 'ID3'
    seek $fh, 0, 0;
    read $fh, $bytes, 3;
    return unless $bytes eq 'ID3';

    # get version
    read $fh, $bytes, 2;
    $h->{version} = sprintf "ID3v2.%d.%d",
    @$h{qw[major_version minor_version]} =
        unpack 'c2', $bytes;

    # get flags
    read $fh, $bytes, 1;
    if ($h->{major_version} == 2) {
        @$h{qw[unsync compression]} =
            (unpack 'b8', $bytes)[7, 6];
        $h->{ext_header} = 0;
        $h->{experimental} = 0;
    } else {
        @$h{qw[unsync ext_header experimental]} =
            (unpack 'b8', $bytes)[7, 6, 5];
    }

    # get ID3v2 tag length from bytes 7-10
    $h->{tag_size} = 10;	# include ID3v2 header size
    read $fh, $bytes, 4;
    @bytes = reverse unpack 'C4', $bytes;
    foreach my $i (0 .. 3) {
        # whoaaaaaa nellllllyyyyyy!
        $h->{tag_size} += $bytes[$i] * 128 ** $i;
    }

    # get extended header size
    $h->{ext_header_size} = 0;
    if ($h->{ext_header}) {
        $h->{ext_header_size} += 10;
        read $fh, $bytes, 4;
        @bytes = reverse unpack 'C4', $bytes;
        for my $i (0..3) {
            $h->{ext_header_size} += $bytes[$i] * 256 ** $i;
        }
    }

    return $h;
}

sub _unpack_head {
    unpack('l', pack('L', unpack('N', $_[0])));
}

sub _close {
    my($file, $fh) = @_;
    unless (ref $file) { # filehandle not passed
        close $fh or warn "Problem closing '$file': $!";
    }
}

BEGIN {
    @mp3_genres = (
		'Blues',
		'Classic Rock',
		'Country',
		'Dance',
		'Disco',
		'Funk',
		'Grunge',
		'Hip-Hop',
		'Jazz',
		'Metal',
		'New Age',
		'Oldies',
		'Other',
		'Pop',
		'R&B',
		'Rap',
		'Reggae',
		'Rock',
		'Techno',
		'Industrial',
		'Alternative',
		'Ska',
		'Death Metal',
		'Pranks',
		'Soundtrack',
		'Euro-Techno',
		'Ambient',
		'Trip-Hop',
		'Vocal',
		'Jazz+Funk',
		'Fusion',
		'Trance',
		'Classical',
		'Instrumental',
		'Acid',
		'House',
		'Game',
		'Sound Clip',
		'Gospel',
		'Noise',
		'AlternRock',
		'Bass',
		'Soul',
		'Punk',
		'Space',
		'Meditative',
		'Instrumental Pop',
		'Instrumental Rock',
		'Ethnic',
		'Gothic',
		'Darkwave',
		'Techno-Industrial',
		'Electronic',
		'Pop-Folk',
		'Eurodance',
		'Dream',
		'Southern Rock',
		'Comedy',
		'Cult',
		'Gangsta',
		'Top 40',
		'Christian Rap',
		'Pop/Funk',
		'Jungle',
		'Native American',
		'Cabaret',
		'New Wave',
		'Psychadelic',
		'Rave',
		'Showtunes',
		'Trailer',
		'Lo-Fi',
		'Tribal',
		'Acid Punk',
		'Acid Jazz',
		'Polka',
		'Retro',
		'Musical',
		'Rock & Roll',
		'Hard Rock',
	);

	@winamp_genres = (
		@mp3_genres,
		'Folk',
		'Folk-Rock',
		'National Folk',
		'Swing',
		'Fast Fusion',
		'Bebob',
		'Latin',
		'Revival',
		'Celtic',
		'Bluegrass',
		'Avantgarde',
		'Gothic Rock',
		'Progressive Rock',
		'Psychedelic Rock',
		'Symphonic Rock',
		'Slow Rock',
		'Big Band',
		'Chorus',
		'Easy Listening',
		'Acoustic',
		'Humour',
		'Speech',
		'Chanson',
		'Opera',
		'Chamber Music',
		'Sonata',
		'Symphony',
		'Booty Bass',
		'Primus',
		'Porn Groove',
		'Satire',
		'Slow Jam',
		'Club',
		'Tango',
		'Samba',
		'Folklore',
		'Ballad',
		'Power Ballad',
		'Rhythmic Soul',
		'Freestyle',
		'Duet',
		'Punk Rock',
		'Drum Solo',
		'Acapella',
		'Euro-House',
		'Dance Hall',
		'Goa',
		'Drum & Bass',
		'Club-House',
		'Hardcore',
		'Terror',
		'Indie',
		'BritPop',
		'Negerpunk',
		'Polsk Punk',
		'Beat',
		'Christian Gangsta Rap',
		'Heavy Metal',
		'Black Metal',
		'Crossover',
		'Contemporary Christian',
		'Christian Rock',
		'Merengue',
		'Salsa',
		'Thrash Metal',
		'Anime',
		'JPop',
		'Synthpop',
	);

    @t_bitrate = ([
		[0, 32, 48, 56,  64,  80,  96, 112, 128, 144, 160, 176, 192, 224, 256],
		[0,  8, 16, 24,  32,  40,  48,  56,  64,  80,  96, 112, 128, 144, 160],
		[0,  8, 16, 24,  32,  40,  48,  56,  64,  80,  96, 112, 128, 144, 160]
	],[
		[0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448],
		[0, 32, 48, 56,  64,  80,  96, 112, 128, 160, 192, 224, 256, 320, 384],
		[0, 32, 40, 48,  56,  64,  80,  96, 112, 128, 160, 192, 224, 256, 320]
	]);

    @t_sampling_freq = (
                        [11025, 12000,  8000],
                        [undef, undef, undef],	# reserved
                        [22050, 24000, 16000],
                        [44100, 48000, 32000]
                        );

    @frequency_tbl = map { $_ ? eval "${_}e-3" : 0 }
		map { @$_ } @t_sampling_freq;

    @mp3_info_fields = qw(
		VERSION
		LAYER
		STEREO
		VBR
		BITRATE
		FREQUENCY
		SIZE
		SECS
		MM
		SS
		MS
		TIME
		COPYRIGHT
		PADDING
		MODE
		FRAMES
		FRAME_LENGTH
		VBR_SCALE
	);

    %v1_tag_fields =
        (TITLE => 30, ARTIST => 30, ALBUM => 30, COMMENT => 30, YEAR => 4);

    @v1_tag_names = qw(TITLE ARTIST ALBUM YEAR COMMENT TRACKNUM GENRE);

    %v2_to_v1_names = (
		# v2.2 tags
		'TT2' => 'TITLE',
		'TP1' => 'ARTIST',
		'TAL' => 'ALBUM',
		'TYE' => 'YEAR',
		'COM' => 'COMMENT',
		'TRK' => 'TRACKNUM',
		'TCO' => 'GENRE', # not clean mapping, but ...
		# v2.3 tags
		'TIT2' => 'TITLE',
		'TPE1' => 'ARTIST',
		'TALB' => 'ALBUM',
		'TYER' => 'YEAR',
		'COMM' => 'COMMENT',
		'TRCK' => 'TRACKNUM',
		'TCON' => 'GENRE',
	);

    %v2_tag_names = (
		# v2.2 tags
		'BUF' => 'Recommended buffer size',
		'CNT' => 'Play counter',
		'COM' => 'Comments',
		'CRA' => 'Audio encryption',
		'CRM' => 'Encrypted meta frame',
		'ETC' => 'Event timing codes',
		'EQU' => 'Equalization',
		'GEO' => 'General encapsulated object',
		'IPL' => 'Involved people list',
		'LNK' => 'Linked information',
		'MCI' => 'Music CD Identifier',
		'MLL' => 'MPEG location lookup table',
		'PIC' => 'Attached picture',
		'POP' => 'Popularimeter',
		'REV' => 'Reverb',
		'RVA' => 'Relative volume adjustment',
		'SLT' => 'Synchronized lyric/text',
		'STC' => 'Synced tempo codes',
		'TAL' => 'Album/Movie/Show title',
		'TBP' => 'BPM (Beats Per Minute)',
		'TCM' => 'Composer',
		'TCO' => 'Content type',
		'TCR' => 'Copyright message',
		'TDA' => 'Date',
		'TDY' => 'Playlist delay',
		'TEN' => 'Encoded by',
		'TFT' => 'File type',
		'TIM' => 'Time',
		'TKE' => 'Initial key',
		'TLA' => 'Language(s)',
		'TLE' => 'Length',
		'TMT' => 'Media type',
		'TOA' => 'Original artist(s)/performer(s)',
		'TOF' => 'Original filename',
		'TOL' => 'Original Lyricist(s)/text writer(s)',
		'TOR' => 'Original release year',
		'TOT' => 'Original album/Movie/Show title',
		'TP1' => 'Lead artist(s)/Lead performer(s)/Soloist(s)/Performing group',
		'TP2' => 'Band/Orchestra/Accompaniment',
		'TP3' => 'Conductor/Performer refinement',
		'TP4' => 'Interpreted, remixed, or otherwise modified by',
		'TPA' => 'Part of a set',
		'TPB' => 'Publisher',
		'TRC' => 'ISRC (International Standard Recording Code)',
		'TRD' => 'Recording dates',
		'TRK' => 'Track number/Position in set',
		'TSI' => 'Size',
		'TSS' => 'Software/hardware and settings used for encoding',
		'TT1' => 'Content group description',
		'TT2' => 'Title/Songname/Content description',
		'TT3' => 'Subtitle/Description refinement',
		'TXT' => 'Lyricist/text writer',
		'TXX' => 'User defined text information frame',
		'TYE' => 'Year',
		'UFI' => 'Unique file identifier',
		'ULT' => 'Unsychronized lyric/text transcription',
		'WAF' => 'Official audio file webpage',
		'WAR' => 'Official artist/performer webpage',
		'WAS' => 'Official audio source webpage',
		'WCM' => 'Commercial information',
		'WCP' => 'Copyright/Legal information',
		'WPB' => 'Publishers official webpage',
		'WXX' => 'User defined URL link frame',

		# v2.3 tags
		'AENC' => 'Audio encryption',
		'APIC' => 'Attached picture',
		'COMM' => 'Comments',
		'COMR' => 'Commercial frame',
		'ENCR' => 'Encryption method registration',
		'EQUA' => 'Equalization',
		'ETCO' => 'Event timing codes',
		'GEOB' => 'General encapsulated object',
		'GRID' => 'Group identification registration',
		'IPLS' => 'Involved people list',
		'LINK' => 'Linked information',
		'MCDI' => 'Music CD identifier',
		'MLLT' => 'MPEG location lookup table',
		'OWNE' => 'Ownership frame',
		'PCNT' => 'Play counter',
		'POPM' => 'Popularimeter',
		'POSS' => 'Position synchronisation frame',
		'PRIV' => 'Private frame',
		'RBUF' => 'Recommended buffer size',
		'RVAD' => 'Relative volume adjustment',
		'RVRB' => 'Reverb',
		'SYLT' => 'Synchronized lyric/text',
		'SYTC' => 'Synchronized tempo codes',
		'TALB' => 'Album/Movie/Show title',
		'TBPM' => 'BPM (beats per minute)',
		'TCOM' => 'Composer',
		'TCON' => 'Content type',
		'TCOP' => 'Copyright message',
		'TDAT' => 'Date',
		'TDLY' => 'Playlist delay',
		'TENC' => 'Encoded by',
		'TEXT' => 'Lyricist/Text writer',
		'TFLT' => 'File type',
		'TIME' => 'Time',
		'TIT1' => 'Content group description',
		'TIT2' => 'Title/songname/content description',
		'TIT3' => 'Subtitle/Description refinement',
		'TKEY' => 'Initial key',
		'TLAN' => 'Language(s)',
		'TLEN' => 'Length',
		'TMED' => 'Media type',
		'TOAL' => 'Original album/movie/show title',
		'TOFN' => 'Original filename',
		'TOLY' => 'Original lyricist(s)/text writer(s)',
		'TOPE' => 'Original artist(s)/performer(s)',
		'TORY' => 'Original release year',
		'TOWN' => 'File owner/licensee',
		'TPE1' => 'Lead performer(s)/Soloist(s)',
		'TPE2' => 'Band/orchestra/accompaniment',
		'TPE3' => 'Conductor/performer refinement',
		'TPE4' => 'Interpreted, remixed, or otherwise modified by',
		'TPOS' => 'Part of a set',
		'TPUB' => 'Publisher',
		'TRCK' => 'Track number/Position in set',
		'TRDA' => 'Recording dates',
		'TRSN' => 'Internet radio station name',
		'TRSO' => 'Internet radio station owner',
		'TSIZ' => 'Size',
		'TSRC' => 'ISRC (international standard recording code)',
		'TSSE' => 'Software/Hardware and settings used for encoding',
		'TXXX' => 'User defined text information frame',
		'TYER' => 'Year',
		'UFID' => 'Unique file identifier',
		'USER' => 'Terms of use',
		'USLT' => 'Unsychronized lyric/text transcription',
		'WCOM' => 'Commercial information',
		'WCOP' => 'Copyright/Legal information',
		'WOAF' => 'Official audio file webpage',
		'WOAR' => 'Official artist/performer webpage',
		'WOAS' => 'Official audio source webpage',
		'WORS' => 'Official internet radio station homepage',
		'WPAY' => 'Payment',
		'WPUB' => 'Publishers official webpage',
		'WXXX' => 'User defined URL link frame',

		# v2.4 additional tags
		# note that we don't restrict tags from 2.3 or 2.4,
		'ASPI' => 'Audio seek point index',
		'EQU2' => 'Equalisation (2)',
		'RVA2' => 'Relative volume adjustment (2)',
		'SEEK' => 'Seek frame',
		'SIGN' => 'Signature frame',
		'TDEN' => 'Encoding time',
		'TDOR' => 'Original release time',
		'TDRC' => 'Recording time',
		'TDRL' => 'Release time',
		'TDTG' => 'Tagging time',
		'TIPL' => 'Involved people list',
		'TMCL' => 'Musician credits list',
		'TMOO' => 'Mood',
		'TPRO' => 'Produced notice',
		'TSOA' => 'Album sort order',
		'TSOP' => 'Performer sort order',
		'TSOT' => 'Title sort order',
		'TSST' => 'Set subtitle',

		# grrrrrrr
		'COM ' => 'Broken iTunes comments',
	);
}

1;

__END__

=pod

=back

=head1 TROUBLESHOOTING

If you find a bug, please send me a patch (see the project page in L<"SEE ALSO">).
If you cannot figure out why it does not work for you, please put the MP3 file in
a place where I can get it (preferably via FTP, or HTTP, or .Mac iDisk) and send me
mail regarding where I can get the file, with a detailed description of the problem.

If I download the file, after debugging the problem I will not keep the MP3 file
if it is not legal for me to have it.  Just let me know if it is legal for me to
keep it or not.


=head1 TODO

=over 4

=item ID3v2 Support

Still need to do more for reading tags, such as using Compress::Zlib to decompress
compressed tags.  But until I see this in use more, I won't bother.  If something
does not work properly with reading, follow the instructions above for
troubleshooting.

ID3v2 I<writing> is coming soon.

=item Get data from scalar

Instead of passing a file spec or filehandle, pass the
data itself.  Would take some work, converting the seeks, etc.

=item Padding bit ?

Do something with padding bit.

=item Test suite

Test suite could use a bit of an overhaul and update.  Patches very welcome.

=over 4

=item *

Revamp getset.t.  Test all the various get_mp3tag args.

=item *

Test Unicode.

=item *

Test OOP API.

=item *

Test error handling, check more for missing files, bad MP3s, etc.

=back

=item Other VBR

Right now, only Xing VBR is supported.

=back


=head1 THANKS

Edward Allen E<lt>allenej@c51844-a.spokn1.wa.home.comE<gt>,
Vittorio Bertola E<lt>v.bertola@vitaminic.comE<gt>,
Michael Blakeley E<lt>mike@blakeley.comE<gt>,
Per Bolmstedt E<lt>tomten@kol14.comE<gt>,
Tony Bowden E<lt>tony@tmtm.comE<gt>,
Tom Brown E<lt>thecap@usa.netE<gt>,
Sergio Camarena E<lt>scamarena@users.sourceforge.netE<gt>,
Chris Dawson E<lt>cdawson@webiphany.comE<gt>,
Luke Drumm E<lt>lukedrumm@mypad.comE<gt>,
Kyle Farrell E<lt>kyle@cantametrix.comE<gt>,
Jeffrey Friedl E<lt>jfriedl@yahoo.comE<gt>,
brian d foy E<lt>comdog@panix.comE<gt>,
Ben Gertzfield E<lt>che@debian.orgE<gt>,
Brian Goodwin E<lt>brian@fuddmain.comE<gt>,
Todd Hanneken E<lt>thanneken@hds.harvard.eduE<gt>,
Todd Harris E<lt>harris@cshl.orgE<gt>,
Woodrow Hill E<lt>asim@mindspring.comE<gt>,
Kee Hinckley E<lt>nazgul@somewhere.comE<gt>,
Roman Hodek E<lt>Roman.Hodek@informatik.uni-erlangen.deE<gt>,
Peter Kovacs E<lt>kovacsp@egr.uri.eduE<gt>,
Johann Lindvall,
Peter Marschall E<lt>peter.marschall@mayn.deE<gt>,
Trond Michelsen E<lt>mike@crusaders.noE<gt>,
Dave O'Neill E<lt>dave@nexus.carleton.caE<gt>,
Christoph Oberauer E<lt>christoph.oberauer@sbg.ac.atE<gt>,
Jake Palmer E<lt>jake.palmer@db.comE<gt>,
Andrew Phillips E<lt>asp@wasteland.orgE<gt>,
David Reuteler E<lt>reuteler@visi.comE<gt>,
John Ruttenberg E<lt>rutt@chezrutt.comE<gt>,
Matthew Sachs E<lt>matthewg@zevils.comE<gt>,
E<lt>scfc_de@users.sf.netE<gt>,
Hermann Schwaerzler E<lt>Hermann.Schwaerzler@uibk.ac.atE<gt>,
Chris Sidi E<lt>sidi@angband.orgE<gt>,
Roland Steinbach E<lt>roland@support-system.comE<gt>,
Stuart E<lt>schneis@users.sourceforge.netE<gt>,
Jeffery Sumler E<lt>jsumler@mediaone.netE<gt>,
Predrag Supurovic E<lt>mpgtools@dv.co.yuE<gt>,
Bogdan Surdu E<lt>tim@go.roE<gt>,
E<lt>tim@tim-landscheidt.deE<gt>,
Pass F. B. Travis E<lt>pftravis@bellsouth.netE<gt>,
Tobias Wagener E<lt>tobias@wagener.nuE<gt>,
Ronan Waide E<lt>waider@stepstone.ieE<gt>,
Andy Waite E<lt>andy@mailroute.comE<gt>,
Ken Williams E<lt>ken@forum.swarthmore.eduE<gt>,
Meng Weng Wong E<lt>mengwong@pobox.comE<gt>.


=head1 AUTHOR AND COPYRIGHT

Chris Nandor E<lt>pudge@pobox.comE<gt>, http://pudge.net/

Copyright (c) 1998-2003 Chris Nandor.  All rights reserved.  This program is
free software; you can redistribute it and/or modify it under the terms
of the Artistic License, distributed with Perl.


=head1 SEE ALSO

=over 4

=item MP3::Info Project Page

	http://projects.pudge.net/

=item mp3tools

	http://www.zevils.com/linux/mp3tools/

=item mpgtools

	http://www.dv.co.yu/mpgscript/mpgtools.htm
	http://www.dv.co.yu/mpgscript/mpeghdr.htm

=item mp3tool

	http://www.dtek.chalmers.se/~d2linjo/mp3/mp3tool.html

=item ID3v2

	http://www.id3.org/

=item Xing Variable Bitrate

	http://www.xingtech.com/support/partner_developer/mp3/vbr_sdk/

=item MP3Ext

	http://rupert.informatik.uni-stuttgart.de/~mutschml/MP3ext/

=item Xmms

	http://www.xmms.org/


=back

=head1 VERSION

v1.02, Sunday, March 2, 2003

=cut