1<?php 2///////////////////////////////////////////////////////////////// 3/// getID3() by James Heinrich <info@getid3.org> // 4// available at http://getid3.sourceforge.net // 5// or http://www.getid3.org // 6///////////////////////////////////////////////////////////////// 7// See readme.txt for more details // 8///////////////////////////////////////////////////////////////// 9// // 10// module.tag.id3v1.php // 11// module for analyzing ID3v1 tags // 12// dependencies: NONE // 13// /// 14///////////////////////////////////////////////////////////////// 15 16 17class getid3_id3v1 18{ 19 20 function getid3_id3v1(&$fd, &$ThisFileInfo) { 21 22 fseek($fd, -256, SEEK_END); 23 $preid3v1 = fread($fd, 128); 24 $id3v1tag = fread($fd, 128); 25 26 if (substr($id3v1tag, 0, 3) == 'TAG') { 27 28 $ThisFileInfo['avdataend'] = $ThisFileInfo['filesize'] - 128; 29 30 $ParsedID3v1['title'] = $this->cutfield(substr($id3v1tag, 3, 30)); 31 $ParsedID3v1['artist'] = $this->cutfield(substr($id3v1tag, 33, 30)); 32 $ParsedID3v1['album'] = $this->cutfield(substr($id3v1tag, 63, 30)); 33 $ParsedID3v1['year'] = $this->cutfield(substr($id3v1tag, 93, 4)); 34 $ParsedID3v1['comment'] = substr($id3v1tag, 97, 30); // can't remove nulls yet, track detection depends on them 35 $ParsedID3v1['genreid'] = ord(substr($id3v1tag, 127, 1)); 36 37 // If second-last byte of comment field is null and last byte of comment field is non-null 38 // then this is ID3v1.1 and the comment field is 28 bytes long and the 30th byte is the track number 39 if (($id3v1tag{125} === "\x00") && ($id3v1tag{126} !== "\x00")) { 40 $ParsedID3v1['track'] = ord(substr($ParsedID3v1['comment'], 29, 1)); 41 $ParsedID3v1['comment'] = substr($ParsedID3v1['comment'], 0, 28); 42 } 43 $ParsedID3v1['comment'] = $this->cutfield($ParsedID3v1['comment']); 44 45 $ParsedID3v1['genre'] = $this->LookupGenreName($ParsedID3v1['genreid']); 46 if (!empty($ParsedID3v1['genre'])) { 47 unset($ParsedID3v1['genreid']); 48 } 49 if (empty($ParsedID3v1['genre']) || (@$ParsedID3v1['genre'] == 'Unknown')) { 50 unset($ParsedID3v1['genre']); 51 } 52 53 foreach ($ParsedID3v1 as $key => $value) { 54 $ParsedID3v1['comments'][$key][0] = $value; 55 } 56 57 // ID3v1 data is supposed to be padded with NULL characters, but some taggers pad with spaces 58 $GoodFormatID3v1tag = $this->GenerateID3v1Tag( 59 $ParsedID3v1['title'], 60 $ParsedID3v1['artist'], 61 $ParsedID3v1['album'], 62 $ParsedID3v1['year'], 63 $this->LookupGenreID(@$ParsedID3v1['genre']), 64 $ParsedID3v1['comment'], 65 @$ParsedID3v1['track']); 66 $ParsedID3v1['padding_valid'] = true; 67 if ($id3v1tag !== $GoodFormatID3v1tag) { 68 $ParsedID3v1['padding_valid'] = false; 69 $ThisFileInfo['warning'][] = 'Some ID3v1 fields do not use NULL characters for padding'; 70 } 71 72 $ParsedID3v1['tag_offset_end'] = $ThisFileInfo['filesize']; 73 $ParsedID3v1['tag_offset_start'] = $ParsedID3v1['tag_offset_end'] - 128; 74 75 $ThisFileInfo['id3v1'] = $ParsedID3v1; 76 } 77 78 if (substr($preid3v1, 0, 3) == 'TAG') { 79 // The way iTunes handles tags is, well, brain-damaged. 80 // It completely ignores v1 if ID3v2 is present. 81 // This goes as far as adding a new v1 tag *even if there already is one* 82 83 // A suspected double-ID3v1 tag has been detected, but it could be that 84 // the "TAG" identifier is a legitimate part of an APE or Lyrics3 tag 85 if (substr($preid3v1, 96, 8) == 'APETAGEX') { 86 // an APE tag footer was found before the last ID3v1, assume false "TAG" synch 87 } elseif (substr($preid3v1, 119, 6) == 'LYRICS') { 88 // a Lyrics3 tag footer was found before the last ID3v1, assume false "TAG" synch 89 } else { 90 // APE and Lyrics3 footers not found - assume double ID3v1 91 $ThisFileInfo['warning'][] = 'Duplicate ID3v1 tag detected - this has been known to happen with iTunes'; 92 $ThisFileInfo['avdataend'] -= 128; 93 } 94 } 95 96 return true; 97 } 98 99 function cutfield($str) { 100 return trim(substr($str, 0, strcspn($str, "\x00"))); 101 } 102 103 function ArrayOfGenres($allowSCMPXextended=false) { 104 static $GenreLookup = array( 105 0 => 'Blues', 106 1 => 'Classic Rock', 107 2 => 'Country', 108 3 => 'Dance', 109 4 => 'Disco', 110 5 => 'Funk', 111 6 => 'Grunge', 112 7 => 'Hip-Hop', 113 8 => 'Jazz', 114 9 => 'Metal', 115 10 => 'New Age', 116 11 => 'Oldies', 117 12 => 'Other', 118 13 => 'Pop', 119 14 => 'R&B', 120 15 => 'Rap', 121 16 => 'Reggae', 122 17 => 'Rock', 123 18 => 'Techno', 124 19 => 'Industrial', 125 20 => 'Alternative', 126 21 => 'Ska', 127 22 => 'Death Metal', 128 23 => 'Pranks', 129 24 => 'Soundtrack', 130 25 => 'Euro-Techno', 131 26 => 'Ambient', 132 27 => 'Trip-Hop', 133 28 => 'Vocal', 134 29 => 'Jazz+Funk', 135 30 => 'Fusion', 136 31 => 'Trance', 137 32 => 'Classical', 138 33 => 'Instrumental', 139 34 => 'Acid', 140 35 => 'House', 141 36 => 'Game', 142 37 => 'Sound Clip', 143 38 => 'Gospel', 144 39 => 'Noise', 145 40 => 'Alt. Rock', 146 41 => 'Bass', 147 42 => 'Soul', 148 43 => 'Punk', 149 44 => 'Space', 150 45 => 'Meditative', 151 46 => 'Instrumental Pop', 152 47 => 'Instrumental Rock', 153 48 => 'Ethnic', 154 49 => 'Gothic', 155 50 => 'Darkwave', 156 51 => 'Techno-Industrial', 157 52 => 'Electronic', 158 53 => 'Pop-Folk', 159 54 => 'Eurodance', 160 55 => 'Dream', 161 56 => 'Southern Rock', 162 57 => 'Comedy', 163 58 => 'Cult', 164 59 => 'Gangsta Rap', 165 60 => 'Top 40', 166 61 => 'Christian Rap', 167 62 => 'Pop/Funk', 168 63 => 'Jungle', 169 64 => 'Native American', 170 65 => 'Cabaret', 171 66 => 'New Wave', 172 67 => 'Psychedelic', 173 68 => 'Rave', 174 69 => 'Showtunes', 175 70 => 'Trailer', 176 71 => 'Lo-Fi', 177 72 => 'Tribal', 178 73 => 'Acid Punk', 179 74 => 'Acid Jazz', 180 75 => 'Polka', 181 76 => 'Retro', 182 77 => 'Musical', 183 78 => 'Rock & Roll', 184 79 => 'Hard Rock', 185 80 => 'Folk', 186 81 => 'Folk/Rock', 187 82 => 'National Folk', 188 83 => 'Swing', 189 84 => 'Fast-Fusion', 190 85 => 'Bebob', 191 86 => 'Latin', 192 87 => 'Revival', 193 88 => 'Celtic', 194 89 => 'Bluegrass', 195 90 => 'Avantgarde', 196 91 => 'Gothic Rock', 197 92 => 'Progressive Rock', 198 93 => 'Psychedelic Rock', 199 94 => 'Symphonic Rock', 200 95 => 'Slow Rock', 201 96 => 'Big Band', 202 97 => 'Chorus', 203 98 => 'Easy Listening', 204 99 => 'Acoustic', 205 100 => 'Humour', 206 101 => 'Speech', 207 102 => 'Chanson', 208 103 => 'Opera', 209 104 => 'Chamber Music', 210 105 => 'Sonata', 211 106 => 'Symphony', 212 107 => 'Booty Bass', 213 108 => 'Primus', 214 109 => 'Porn Groove', 215 110 => 'Satire', 216 111 => 'Slow Jam', 217 112 => 'Club', 218 113 => 'Tango', 219 114 => 'Samba', 220 115 => 'Folklore', 221 116 => 'Ballad', 222 117 => 'Power Ballad', 223 118 => 'Rhythmic Soul', 224 119 => 'Freestyle', 225 120 => 'Duet', 226 121 => 'Punk Rock', 227 122 => 'Drum Solo', 228 123 => 'A Cappella', 229 124 => 'Euro-House', 230 125 => 'Dance Hall', 231 126 => 'Goa', 232 127 => 'Drum & Bass', 233 128 => 'Club-House', 234 129 => 'Hardcore', 235 130 => 'Terror', 236 131 => 'Indie', 237 132 => 'BritPop', 238 133 => 'Negerpunk', 239 134 => 'Polsk Punk', 240 135 => 'Beat', 241 136 => 'Christian Gangsta Rap', 242 137 => 'Heavy Metal', 243 138 => 'Black Metal', 244 139 => 'Crossover', 245 140 => 'Contemporary Christian', 246 141 => 'Christian Rock', 247 142 => 'Merengue', 248 143 => 'Salsa', 249 144 => 'Trash Metal', 250 145 => 'Anime', 251 146 => 'JPop', 252 147 => 'Synthpop', 253 254 255 => 'Unknown', 255 256 'CR' => 'Cover', 257 'RX' => 'Remix' 258 ); 259 260 static $GenreLookupSCMPX = array(); 261 if ($allowSCMPXextended && empty($GenreLookupSCMPX)) { 262 $GenreLookupSCMPX = $GenreLookup; 263 // http://www.geocities.co.jp/SiliconValley-Oakland/3664/alittle.html#GenreExtended 264 // Extended ID3v1 genres invented by SCMPX 265 // Note that 255 "Japanese Anime" conflicts with standard "Unknown" 266 $GenreLookupSCMPX[240] = 'Sacred'; 267 $GenreLookupSCMPX[241] = 'Northern Europe'; 268 $GenreLookupSCMPX[242] = 'Irish & Scottish'; 269 $GenreLookupSCMPX[243] = 'Scotland'; 270 $GenreLookupSCMPX[244] = 'Ethnic Europe'; 271 $GenreLookupSCMPX[245] = 'Enka'; 272 $GenreLookupSCMPX[246] = 'Children\'s Song'; 273 $GenreLookupSCMPX[247] = 'Japanese Sky'; 274 $GenreLookupSCMPX[248] = 'Japanese Heavy Rock'; 275 $GenreLookupSCMPX[249] = 'Japanese Doom Rock'; 276 $GenreLookupSCMPX[250] = 'Japanese J-POP'; 277 $GenreLookupSCMPX[251] = 'Japanese Seiyu'; 278 $GenreLookupSCMPX[252] = 'Japanese Ambient Techno'; 279 $GenreLookupSCMPX[253] = 'Japanese Moemoe'; 280 $GenreLookupSCMPX[254] = 'Japanese Tokusatsu'; 281 //$GenreLookupSCMPX[255] = 'Japanese Anime'; 282 } 283 284 return ($allowSCMPXextended ? $GenreLookupSCMPX : $GenreLookup); 285 } 286 287 function LookupGenreName($genreid, $allowSCMPXextended=true) { 288 switch ($genreid) { 289 case 'RX': 290 case 'CR': 291 break; 292 default: 293 $genreid = intval($genreid); // to handle 3 or '3' or '03' 294 break; 295 } 296 $GenreLookup = getid3_id3v1::ArrayOfGenres($allowSCMPXextended); 297 return (isset($GenreLookup[$genreid]) ? $GenreLookup[$genreid] : false); 298 } 299 300 function LookupGenreID($genre, $allowSCMPXextended=false) { 301 $GenreLookup = getid3_id3v1::ArrayOfGenres($allowSCMPXextended); 302 $LowerCaseNoSpaceSearchTerm = strtolower(str_replace(' ', '', $genre)); 303 foreach ($GenreLookup as $key => $value) { 304 foreach ($GenreLookup as $key => $value) { 305 if (strtolower(str_replace(' ', '', $value)) == $LowerCaseNoSpaceSearchTerm) { 306 return $key; 307 } 308 } 309 return false; 310 } 311 return (isset($GenreLookup[$genreid]) ? $GenreLookup[$genreid] : false); 312 } 313 314 function StandardiseID3v1GenreName($OriginalGenre) { 315 if (($GenreID = getid3_id3v1::LookupGenreID($OriginalGenre)) !== false) { 316 return getid3_id3v1::LookupGenreName($GenreID); 317 } 318 return $OriginalGenre; 319 } 320 321 function GenerateID3v1Tag($title, $artist, $album, $year, $genreid, $comment, $track='') { 322 $ID3v1Tag = 'TAG'; 323 $ID3v1Tag .= str_pad(trim(substr($title, 0, 30)), 30, "\x00", STR_PAD_RIGHT); 324 $ID3v1Tag .= str_pad(trim(substr($artist, 0, 30)), 30, "\x00", STR_PAD_RIGHT); 325 $ID3v1Tag .= str_pad(trim(substr($album, 0, 30)), 30, "\x00", STR_PAD_RIGHT); 326 $ID3v1Tag .= str_pad(trim(substr($year, 0, 4)), 4, "\x00", STR_PAD_LEFT); 327 if (!empty($track) && ($track > 0) && ($track <= 255)) { 328 $ID3v1Tag .= str_pad(trim(substr($comment, 0, 28)), 28, "\x00", STR_PAD_RIGHT); 329 $ID3v1Tag .= "\x00"; 330 if (gettype($track) == 'string') { 331 $track = (int) $track; 332 } 333 $ID3v1Tag .= chr($track); 334 } else { 335 $ID3v1Tag .= str_pad(trim(substr($comment, 0, 30)), 30, "\x00", STR_PAD_RIGHT); 336 } 337 if (($genreid < 0) || ($genreid > 147)) { 338 $genreid = 255; // 'unknown' genre 339 } 340 switch (gettype($genreid)) { 341 case 'string': 342 case 'integer': 343 $ID3v1Tag .= chr(intval($genreid)); 344 break; 345 default: 346 $ID3v1Tag .= chr(255); // 'unknown' genre 347 break; 348 } 349 350 return $ID3v1Tag; 351 } 352 353} 354 355 356?>