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<?php
// +----------------------------------------------------------------------+
// | PHP version 5 |
// +----------------------------------------------------------------------+
// | Copyright (c) 2002-2006 James Heinrich, Allan Hansen |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2 of the GPL license, |
// | that is bundled with this package in the file license.txt and is |
// | available through the world-wide-web at the following url: |
// | http://www.gnu.org/copyleft/gpl.html |
// +----------------------------------------------------------------------+
// | getID3() - http://getid3.sourceforge.net or http://www.getid3.org |
// +----------------------------------------------------------------------+
// | Authors: James Heinrich <info�getid3*org> |
// | Allan Hansen <ah�artemis*dk> |
// +----------------------------------------------------------------------+
// | module.tag.id3v1.php |
// | module for analyzing ID3v1 tags |
// | dependencies: NONE |
// +----------------------------------------------------------------------+
//
// $Id: module.tag.id3v1.php,v 1.6 2006/11/16 16:19:52 ah Exp $
class getid3_id3v1 extends getid3_handler
{
public function Analyze() {
$getid3 = $this->getid3;
fseek($getid3->fp, -256, SEEK_END);
$pre_id3v1 = fread($getid3->fp, 128);
$id3v1_tag = fread($getid3->fp, 128);
if (substr($id3v1_tag, 0, 3) == 'TAG') {
$getid3->info['avdataend'] -= 128;
// Shortcut
$getid3->info['id3v1'] = array ();
$info_id3v1 = &$getid3->info['id3v1'];
$info_id3v1['title'] = getid3_id3v1::cutfield(substr($id3v1_tag, 3, 30));
$info_id3v1['artist'] = getid3_id3v1::cutfield(substr($id3v1_tag, 33, 30));
$info_id3v1['album'] = getid3_id3v1::cutfield(substr($id3v1_tag, 63, 30));
$info_id3v1['year'] = getid3_id3v1::cutfield(substr($id3v1_tag, 93, 4));
$info_id3v1['comment'] = substr($id3v1_tag, 97, 30); // can't remove nulls yet, track detection depends on them
$info_id3v1['genreid'] = ord(substr($id3v1_tag, 127, 1));
// If second-last byte of comment field is null and last byte of comment field is non-null then this is ID3v1.1 and the comment field is 28 bytes long and the 30th byte is the track number
if (($id3v1_tag{125} === "\x00") && ($id3v1_tag{126} !== "\x00")) {
$info_id3v1['track'] = ord(substr($info_id3v1['comment'], 29, 1));
$info_id3v1['comment'] = substr($info_id3v1['comment'], 0, 28);
}
$info_id3v1['comment'] = getid3_id3v1::cutfield($info_id3v1['comment']);
$info_id3v1['genre'] = getid3_id3v1::LookupGenreName($info_id3v1['genreid']);
if (!empty($info_id3v1['genre'])) {
unset($info_id3v1['genreid']);
}
if (empty($info_id3v1['genre']) || (@$info_id3v1['genre'] == 'Unknown')) {
unset($info_id3v1['genre']);
}
foreach ($info_id3v1 as $key => $value) {
$key != 'comments' and $info_id3v1['comments'][$key][0] = $value;
}
$info_id3v1['tag_offset_end'] = filesize($getid3->filename);
$info_id3v1['tag_offset_start'] = $info_id3v1['tag_offset_end'] - 128;
}
if (substr($pre_id3v1, 0, 3) == 'TAG') {
// The way iTunes handles tags is, well, brain-damaged.
// It completely ignores v1 if ID3v2 is present.
// This goes as far as adding a new v1 tag *even if there already is one*
// A suspected double-ID3v1 tag has been detected, but it could be that the "TAG" identifier is a legitimate part of an APE or Lyrics3 tag
if (substr($pre_id3v1, 96, 8) == 'APETAGEX') {
// an APE tag footer was found before the last ID3v1, assume false "TAG" synch
} elseif (substr($pre_id3v1, 119, 6) == 'LYRICS') {
// a Lyrics3 tag footer was found before the last ID3v1, assume false "TAG" synch
} else {
// APE and Lyrics3 footers not found - assume double ID3v1
$getid3->warning('Duplicate ID3v1 tag detected - this has been known to happen with iTunes.');
$getid3->info['avdataend'] -= 128;
}
}
return true;
}
public static function cutfield($str) {
return trim(substr($str, 0, strcspn($str, "\x00")));
}
public static function ArrayOfGenres($allow_SCMPX_extended=false) {
static $lookup = array (
0 => 'Blues',
1 => 'Classic Rock',
2 => 'Country',
3 => 'Dance',
4 => 'Disco',
5 => 'Funk',
6 => 'Grunge',
7 => 'Hip-Hop',
8 => 'Jazz',
9 => 'Metal',
10 => 'New Age',
11 => 'Oldies',
12 => 'Other',
13 => 'Pop',
14 => 'R&B',
15 => 'Rap',
16 => 'Reggae',
17 => 'Rock',
18 => 'Techno',
19 => 'Industrial',
20 => 'Alternative',
21 => 'Ska',
22 => 'Death Metal',
23 => 'Pranks',
24 => 'Soundtrack',
25 => 'Euro-Techno',
26 => 'Ambient',
27 => 'Trip-Hop',
28 => 'Vocal',
29 => 'Jazz+Funk',
30 => 'Fusion',
31 => 'Trance',
32 => 'Classical',
33 => 'Instrumental',
34 => 'Acid',
35 => 'House',
36 => 'Game',
37 => 'Sound Clip',
38 => 'Gospel',
39 => 'Noise',
40 => 'Alt. Rock',
41 => 'Bass',
42 => 'Soul',
43 => 'Punk',
44 => 'Space',
45 => 'Meditative',
46 => 'Instrumental Pop',
47 => 'Instrumental Rock',
48 => 'Ethnic',
49 => 'Gothic',
50 => 'Darkwave',
51 => 'Techno-Industrial',
52 => 'Electronic',
53 => 'Pop-Folk',
54 => 'Eurodance',
55 => 'Dream',
56 => 'Southern Rock',
57 => 'Comedy',
58 => 'Cult',
59 => 'Gangsta Rap',
60 => 'Top 40',
61 => 'Christian Rap',
62 => 'Pop/Funk',
63 => 'Jungle',
64 => 'Native American',
65 => 'Cabaret',
66 => 'New Wave',
67 => 'Psychedelic',
68 => 'Rave',
69 => 'Showtunes',
70 => 'Trailer',
71 => 'Lo-Fi',
72 => 'Tribal',
73 => 'Acid Punk',
74 => 'Acid Jazz',
75 => 'Polka',
76 => 'Retro',
77 => 'Musical',
78 => 'Rock & Roll',
79 => 'Hard Rock',
80 => 'Folk',
81 => 'Folk/Rock',
82 => 'National Folk',
83 => 'Swing',
84 => 'Fast-Fusion',
85 => 'Bebob',
86 => 'Latin',
87 => 'Revival',
88 => 'Celtic',
89 => 'Bluegrass',
90 => 'Avantgarde',
91 => 'Gothic Rock',
92 => 'Progressive Rock',
93 => 'Psychedelic Rock',
94 => 'Symphonic Rock',
95 => 'Slow Rock',
96 => 'Big Band',
97 => 'Chorus',
98 => 'Easy Listening',
99 => 'Acoustic',
100 => 'Humour',
101 => 'Speech',
102 => 'Chanson',
103 => 'Opera',
104 => 'Chamber Music',
105 => 'Sonata',
106 => 'Symphony',
107 => 'Booty Bass',
108 => 'Primus',
109 => 'Porn Groove',
110 => 'Satire',
111 => 'Slow Jam',
112 => 'Club',
113 => 'Tango',
114 => 'Samba',
115 => 'Folklore',
116 => 'Ballad',
117 => 'Power Ballad',
118 => 'Rhythmic Soul',
119 => 'Freestyle',
120 => 'Duet',
121 => 'Punk Rock',
122 => 'Drum Solo',
123 => 'A Cappella',
124 => 'Euro-House',
125 => 'Dance Hall',
126 => 'Goa',
127 => 'Drum & Bass',
128 => 'Club-House',
129 => 'Hardcore',
130 => 'Terror',
131 => 'Indie',
132 => 'BritPop',
133 => 'Negerpunk',
134 => 'Polsk Punk',
135 => 'Beat',
136 => 'Christian Gangsta Rap',
137 => 'Heavy Metal',
138 => 'Black Metal',
139 => 'Crossover',
140 => 'Contemporary Christian',
141 => 'Christian Rock',
142 => 'Merengue',
143 => 'Salsa',
144 => 'Trash Metal',
145 => 'Anime',
146 => 'JPop',
147 => 'Synthpop',
255 => 'Unknown',
'CR' => 'Cover',
'RX' => 'Remix'
);
static $lookupSCMPX = array ();
if ($allow_SCMPX_extended && empty($lookupSCMPX)) {
$lookupSCMPX = $lookup;
// http://www.geocities.co.jp/SiliconValley-Oakland/3664/alittle.html#GenreExtended
// Extended ID3v1 genres invented by SCMPX
// Note that 255 "Japanese Anime" conflicts with standard "Unknown"
$lookupSCMPX[240] = 'Sacred';
$lookupSCMPX[241] = 'Northern Europe';
$lookupSCMPX[242] = 'Irish & Scottish';
$lookupSCMPX[243] = 'Scotland';
$lookupSCMPX[244] = 'Ethnic Europe';
$lookupSCMPX[245] = 'Enka';
$lookupSCMPX[246] = 'Children\'s Song';
$lookupSCMPX[247] = 'Japanese Sky';
$lookupSCMPX[248] = 'Japanese Heavy Rock';
$lookupSCMPX[249] = 'Japanese Doom Rock';
$lookupSCMPX[250] = 'Japanese J-POP';
$lookupSCMPX[251] = 'Japanese Seiyu';
$lookupSCMPX[252] = 'Japanese Ambient Techno';
$lookupSCMPX[253] = 'Japanese Moemoe';
$lookupSCMPX[254] = 'Japanese Tokusatsu';
//$lookupSCMPX[255] = 'Japanese Anime';
}
return ($allow_SCMPX_extended ? $lookupSCMPX : $lookup);
}
public static function LookupGenreName($genre_id, $allow_SCMPX_extended=true) {
switch ($genre_id) {
case 'RX':
case 'CR':
break;
default:
$genre_id = intval($genre_id); // to handle 3 or '3' or '03'
break;
}
$lookup = getid3_id3v1::ArrayOfGenres($allow_SCMPX_extended);
return (isset($lookup[$genre_id]) ? $lookup[$genre_id] : false);
}
public static function LookupGenreID($genre, $allow_SCMPX_extended=false) {
$lookup = getid3_id3v1::ArrayOfGenres($allow_SCMPX_extended);
$lower_case_no_space_search_term = strtolower(str_replace(' ', '', $genre));
foreach ($lookup as $key => $value) {
foreach ($lookup as $key => $value) {
if (strtolower(str_replace(' ', '', $value)) == $lower_case_no_space_search_term) {
return $key;
}
}
return false;
}
return (isset($lookup[$genre_id]) ? $lookup[$genre_id] : false);
}
}
?>
|
