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source: extensions/charlies_content/getid3/getid3/module.tag.id3v1.php @ 3318

Last change on this file since 3318 was 3318, checked in by vdigital, 15 years ago
+ Add Charlies' content to depository
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1	<?php
2	// +----------------------------------------------------------------------+
3	// \| PHP version 5 \|
4	// +----------------------------------------------------------------------+
5	// \| Copyright (c) 2002-2006 James Heinrich, Allan Hansen \|
6	// +----------------------------------------------------------------------+
7	// \| This source file is subject to version 2 of the GPL license, \|
8	// \| that is bundled with this package in the file license.txt and is \|
9	// \| available through the world-wide-web at the following url: \|
10	// \| http://www.gnu.org/copyleft/gpl.html \|
11	// +----------------------------------------------------------------------+
12	// \| getID3() - http://getid3.sourceforge.net or http://www.getid3.org \|
13	// +----------------------------------------------------------------------+
14	// \| Authors: James Heinrich <infoØgetid3*org> \|
15	// \| Allan Hansen <ahØartemis*dk> \|
16	// +----------------------------------------------------------------------+
17	// \| module.tag.id3v1.php \|
18	// \| module for analyzing ID3v1 tags \|
19	// \| dependencies: NONE \|
20	// +----------------------------------------------------------------------+
21	//
22	// $Id: module.tag.id3v1.php 3318 2009-05-20 21:54:10Z vdigital $
23
24
25
26	class getid3_id3v1 extends getid3_handler
27	{
28
29	public function Analyze() {
30
31	$getid3 = $this->getid3;
32
33	fseek($getid3->fp, -256, SEEK_END);
34	$pre_id3v1 = fread($getid3->fp, 128);
35	$id3v1_tag = fread($getid3->fp, 128);
36
37	if (substr($id3v1_tag, 0, 3) == 'TAG') {
38
39	$getid3->info['avdataend'] -= 128;
40
41	// Shortcut
42	$getid3->info['id3v1'] = array ();
43	$info_id3v1 = &$getid3->info['id3v1'];
44
45	$info_id3v1['title'] = getid3_id3v1::cutfield(substr($id3v1_tag, 3, 30));
46	$info_id3v1['artist'] = getid3_id3v1::cutfield(substr($id3v1_tag, 33, 30));
47	$info_id3v1['album'] = getid3_id3v1::cutfield(substr($id3v1_tag, 63, 30));
48	$info_id3v1['year'] = getid3_id3v1::cutfield(substr($id3v1_tag, 93, 4));
49	$info_id3v1['comment'] = substr($id3v1_tag, 97, 30); // can't remove nulls yet, track detection depends on them
50	$info_id3v1['genreid'] = ord(substr($id3v1_tag, 127, 1));
51
52	// 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
53	if (($id3v1_tag{125} === "\x00") && ($id3v1_tag{126} !== "\x00")) {
54	$info_id3v1['track'] = ord(substr($info_id3v1['comment'], 29, 1));
55	$info_id3v1['comment'] = substr($info_id3v1['comment'], 0, 28);
56	}
57	$info_id3v1['comment'] = getid3_id3v1::cutfield($info_id3v1['comment']);
58
59	$info_id3v1['genre'] = getid3_id3v1::LookupGenreName($info_id3v1['genreid']);
60	if (!empty($info_id3v1['genre'])) {
61	unset($info_id3v1['genreid']);
62	}
63	if (empty($info_id3v1['genre']) \|\| (@$info_id3v1['genre'] == 'Unknown')) {
64	unset($info_id3v1['genre']);
65	}
66
67	foreach ($info_id3v1 as $key => $value) {
68	$key != 'comments' and $info_id3v1['comments'][$key][0] = $value;
69	}
70
71	$info_id3v1['tag_offset_end'] = filesize($getid3->filename);
72	$info_id3v1['tag_offset_start'] = $info_id3v1['tag_offset_end'] - 128;
73	}
74
75	if (substr($pre_id3v1, 0, 3) == 'TAG') {
76	// The way iTunes handles tags is, well, brain-damaged.
77	// It completely ignores v1 if ID3v2 is present.
78	// This goes as far as adding a new v1 tag even if there already is one
79
80	// 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
81	if (substr($pre_id3v1, 96, 8) == 'APETAGEX') {
82	// an APE tag footer was found before the last ID3v1, assume false "TAG" synch
83	} elseif (substr($pre_id3v1, 119, 6) == 'LYRICS') {
84	// a Lyrics3 tag footer was found before the last ID3v1, assume false "TAG" synch
85	} else {
86	// APE and Lyrics3 footers not found - assume double ID3v1
87	$getid3->warning('Duplicate ID3v1 tag detected - this has been known to happen with iTunes.');
88	$getid3->info['avdataend'] -= 128;
89	}
90	}
91
92	return true;
93	}
94
95
96
97	public static function cutfield($str) {
98
99	return trim(substr($str, 0, strcspn($str, "\x00")));
100	}
101
102
103
104	public static function ArrayOfGenres($allow_SCMPX_extended=false) {
105
106	static $lookup = array (
107	0 => 'Blues',
108	1 => 'Classic Rock',
109	2 => 'Country',
110	3 => 'Dance',
111	4 => 'Disco',
112	5 => 'Funk',
113	6 => 'Grunge',
114	7 => 'Hip-Hop',
115	8 => 'Jazz',
116	9 => 'Metal',
117	10 => 'New Age',
118	11 => 'Oldies',
119	12 => 'Other',
120	13 => 'Pop',
121	14 => 'R&B',
122	15 => 'Rap',
123	16 => 'Reggae',
124	17 => 'Rock',
125	18 => 'Techno',
126	19 => 'Industrial',
127	20 => 'Alternative',
128	21 => 'Ska',
129	22 => 'Death Metal',
130	23 => 'Pranks',
131	24 => 'Soundtrack',
132	25 => 'Euro-Techno',
133	26 => 'Ambient',
134	27 => 'Trip-Hop',
135	28 => 'Vocal',
136	29 => 'Jazz+Funk',
137	30 => 'Fusion',
138	31 => 'Trance',
139	32 => 'Classical',
140	33 => 'Instrumental',
141	34 => 'Acid',
142	35 => 'House',
143	36 => 'Game',
144	37 => 'Sound Clip',
145	38 => 'Gospel',
146	39 => 'Noise',
147	40 => 'Alt. Rock',
148	41 => 'Bass',
149	42 => 'Soul',
150	43 => 'Punk',
151	44 => 'Space',
152	45 => 'Meditative',
153	46 => 'Instrumental Pop',
154	47 => 'Instrumental Rock',
155	48 => 'Ethnic',
156	49 => 'Gothic',
157	50 => 'Darkwave',
158	51 => 'Techno-Industrial',
159	52 => 'Electronic',
160	53 => 'Pop-Folk',
161	54 => 'Eurodance',
162	55 => 'Dream',
163	56 => 'Southern Rock',
164	57 => 'Comedy',
165	58 => 'Cult',
166	59 => 'Gangsta Rap',
167	60 => 'Top 40',
168	61 => 'Christian Rap',
169	62 => 'Pop/Funk',
170	63 => 'Jungle',
171	64 => 'Native American',
172	65 => 'Cabaret',
173	66 => 'New Wave',
174	67 => 'Psychedelic',
175	68 => 'Rave',
176	69 => 'Showtunes',
177	70 => 'Trailer',
178	71 => 'Lo-Fi',
179	72 => 'Tribal',
180	73 => 'Acid Punk',
181	74 => 'Acid Jazz',
182	75 => 'Polka',
183	76 => 'Retro',
184	77 => 'Musical',
185	78 => 'Rock & Roll',
186	79 => 'Hard Rock',
187	80 => 'Folk',
188	81 => 'Folk/Rock',
189	82 => 'National Folk',
190	83 => 'Swing',
191	84 => 'Fast-Fusion',
192	85 => 'Bebob',
193	86 => 'Latin',
194	87 => 'Revival',
195	88 => 'Celtic',
196	89 => 'Bluegrass',
197	90 => 'Avantgarde',
198	91 => 'Gothic Rock',
199	92 => 'Progressive Rock',
200	93 => 'Psychedelic Rock',
201	94 => 'Symphonic Rock',
202	95 => 'Slow Rock',
203	96 => 'Big Band',
204	97 => 'Chorus',
205	98 => 'Easy Listening',
206	99 => 'Acoustic',
207	100 => 'Humour',
208	101 => 'Speech',
209	102 => 'Chanson',
210	103 => 'Opera',
211	104 => 'Chamber Music',
212	105 => 'Sonata',
213	106 => 'Symphony',
214	107 => 'Booty Bass',
215	108 => 'Primus',
216	109 => 'Porn Groove',
217	110 => 'Satire',
218	111 => 'Slow Jam',
219	112 => 'Club',
220	113 => 'Tango',
221	114 => 'Samba',
222	115 => 'Folklore',
223	116 => 'Ballad',
224	117 => 'Power Ballad',
225	118 => 'Rhythmic Soul',
226	119 => 'Freestyle',
227	120 => 'Duet',
228	121 => 'Punk Rock',
229	122 => 'Drum Solo',
230	123 => 'A Cappella',
231	124 => 'Euro-House',
232	125 => 'Dance Hall',
233	126 => 'Goa',
234	127 => 'Drum & Bass',
235	128 => 'Club-House',
236	129 => 'Hardcore',
237	130 => 'Terror',
238	131 => 'Indie',
239	132 => 'BritPop',
240	133 => 'Negerpunk',
241	134 => 'Polsk Punk',
242	135 => 'Beat',
243	136 => 'Christian Gangsta Rap',
244	137 => 'Heavy Metal',
245	138 => 'Black Metal',
246	139 => 'Crossover',
247	140 => 'Contemporary Christian',
248	141 => 'Christian Rock',
249	142 => 'Merengue',
250	143 => 'Salsa',
251	144 => 'Trash Metal',
252	145 => 'Anime',
253	146 => 'JPop',
254	147 => 'Synthpop',
255
256	255 => 'Unknown',
257
258	'CR' => 'Cover',
259	'RX' => 'Remix'
260	);
261
262	static $lookupSCMPX = array ();
263	if ($allow_SCMPX_extended && empty($lookupSCMPX)) {
264	$lookupSCMPX = $lookup;
265	// http://www.geocities.co.jp/SiliconValley-Oakland/3664/alittle.html#GenreExtended
266	// Extended ID3v1 genres invented by SCMPX
267	// Note that 255 "Japanese Anime" conflicts with standard "Unknown"
268	$lookupSCMPX[240] = 'Sacred';
269	$lookupSCMPX[241] = 'Northern Europe';
270	$lookupSCMPX[242] = 'Irish & Scottish';
271	$lookupSCMPX[243] = 'Scotland';
272	$lookupSCMPX[244] = 'Ethnic Europe';
273	$lookupSCMPX[245] = 'Enka';
274	$lookupSCMPX[246] = 'Children\'s Song';
275	$lookupSCMPX[247] = 'Japanese Sky';
276	$lookupSCMPX[248] = 'Japanese Heavy Rock';
277	$lookupSCMPX[249] = 'Japanese Doom Rock';
278	$lookupSCMPX[250] = 'Japanese J-POP';
279	$lookupSCMPX[251] = 'Japanese Seiyu';
280	$lookupSCMPX[252] = 'Japanese Ambient Techno';
281	$lookupSCMPX[253] = 'Japanese Moemoe';
282	$lookupSCMPX[254] = 'Japanese Tokusatsu';
283	//$lookupSCMPX[255] = 'Japanese Anime';
284	}
285
286	return ($allow_SCMPX_extended ? $lookupSCMPX : $lookup);
287	}
288
289
290
291	public static function LookupGenreName($genre_id, $allow_SCMPX_extended=true) {
292
293	switch ($genre_id) {
294	case 'RX':
295	case 'CR':
296	break;
297	default:
298	$genre_id = intval($genre_id); // to handle 3 or '3' or '03'
299	break;
300	}
301	$lookup = getid3_id3v1::ArrayOfGenres($allow_SCMPX_extended);
302	return (isset($lookup[$genre_id]) ? $lookup[$genre_id] : false);
303	}
304
305
306	public static function LookupGenreID($genre, $allow_SCMPX_extended=false) {
307
308	$lookup = getid3_id3v1::ArrayOfGenres($allow_SCMPX_extended);
309	$lower_case_no_space_search_term = strtolower(str_replace(' ', '', $genre));
310	foreach ($lookup as $key => $value) {
311	foreach ($lookup as $key => $value) {
312	if (strtolower(str_replace(' ', '', $value)) == $lower_case_no_space_search_term) {
313	return $key;
314	}
315	}
316	return false;
317	}
318	return (isset($lookup[$genre_id]) ? $lookup[$genre_id] : false);
319	}
320
321	}
322
323
324	?>

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