--- /dev/null
+<?php
+/////////////////////////////////////////////////////////////////
+/// getID3() by James Heinrich <info@getid3.org> //
+// available at http://getid3.sourceforge.net //
+// or http://www.getid3.org //
+/////////////////////////////////////////////////////////////////
+// See readme.txt for more details //
+/////////////////////////////////////////////////////////////////
+// //
+// module.tag.id3v1.php //
+// module for analyzing ID3v1 tags //
+// dependencies: NONE //
+// ///
+/////////////////////////////////////////////////////////////////
+
+
+class getid3_id3v1 extends getid3_handler
+{
+
+ public function Analyze() {
+ $info = &$this->getid3->info;
+
+ if (!getid3_lib::intValueSupported($info['filesize'])) {
+ $info['warning'][] = 'Unable to check for ID3v1 because file is larger than '.round(PHP_INT_MAX / 1073741824).'GB';
+ return false;
+ }
+
+ fseek($this->getid3->fp, -256, SEEK_END);
+ $preid3v1 = fread($this->getid3->fp, 128);
+ $id3v1tag = fread($this->getid3->fp, 128);
+
+ if (substr($id3v1tag, 0, 3) == 'TAG') {
+
+ $info['avdataend'] = $info['filesize'] - 128;
+
+ $ParsedID3v1['title'] = $this->cutfield(substr($id3v1tag, 3, 30));
+ $ParsedID3v1['artist'] = $this->cutfield(substr($id3v1tag, 33, 30));
+ $ParsedID3v1['album'] = $this->cutfield(substr($id3v1tag, 63, 30));
+ $ParsedID3v1['year'] = $this->cutfield(substr($id3v1tag, 93, 4));
+ $ParsedID3v1['comment'] = substr($id3v1tag, 97, 30); // can't remove nulls yet, track detection depends on them
+ $ParsedID3v1['genreid'] = ord(substr($id3v1tag, 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 (($id3v1tag{125} === "\x00") && ($id3v1tag{126} !== "\x00")) {
+ $ParsedID3v1['track'] = ord(substr($ParsedID3v1['comment'], 29, 1));
+ $ParsedID3v1['comment'] = substr($ParsedID3v1['comment'], 0, 28);
+ }
+ $ParsedID3v1['comment'] = $this->cutfield($ParsedID3v1['comment']);
+
+ $ParsedID3v1['genre'] = $this->LookupGenreName($ParsedID3v1['genreid']);
+ if (!empty($ParsedID3v1['genre'])) {
+ unset($ParsedID3v1['genreid']);
+ }
+ if (isset($ParsedID3v1['genre']) && (empty($ParsedID3v1['genre']) || ($ParsedID3v1['genre'] == 'Unknown'))) {
+ unset($ParsedID3v1['genre']);
+ }
+
+ foreach ($ParsedID3v1 as $key => $value) {
+ $ParsedID3v1['comments'][$key][0] = $value;
+ }
+
+ // ID3v1 data is supposed to be padded with NULL characters, but some taggers pad with spaces
+ $GoodFormatID3v1tag = $this->GenerateID3v1Tag(
+ $ParsedID3v1['title'],
+ $ParsedID3v1['artist'],
+ $ParsedID3v1['album'],
+ $ParsedID3v1['year'],
+ (isset($ParsedID3v1['genre']) ? $this->LookupGenreID($ParsedID3v1['genre']) : false),
+ $ParsedID3v1['comment'],
+ (!empty($ParsedID3v1['track']) ? $ParsedID3v1['track'] : ''));
+ $ParsedID3v1['padding_valid'] = true;
+ if ($id3v1tag !== $GoodFormatID3v1tag) {
+ $ParsedID3v1['padding_valid'] = false;
+ $info['warning'][] = 'Some ID3v1 fields do not use NULL characters for padding';
+ }
+
+ $ParsedID3v1['tag_offset_end'] = $info['filesize'];
+ $ParsedID3v1['tag_offset_start'] = $ParsedID3v1['tag_offset_end'] - 128;
+
+ $info['id3v1'] = $ParsedID3v1;
+ }
+
+ if (substr($preid3v1, 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($preid3v1, 96, 8) == 'APETAGEX') {
+ // an APE tag footer was found before the last ID3v1, assume false "TAG" synch
+ } elseif (substr($preid3v1, 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
+ $info['warning'][] = 'Duplicate ID3v1 tag detected - this has been known to happen with iTunes';
+ $info['avdataend'] -= 128;
+ }
+ }
+
+ return true;
+ }
+
+ public static function cutfield($str) {
+ return trim(substr($str, 0, strcspn($str, "\x00")));
+ }
+
+ public static function ArrayOfGenres($allowSCMPXextended=false) {
+ static $GenreLookup = 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 => 'Thrash Metal',
+ 145 => 'Anime',
+ 146 => 'JPop',
+ 147 => 'Synthpop',
+
+ 255 => 'Unknown',
+
+ 'CR' => 'Cover',
+ 'RX' => 'Remix'
+ );
+
+ static $GenreLookupSCMPX = array();
+ if ($allowSCMPXextended && empty($GenreLookupSCMPX)) {
+ $GenreLookupSCMPX = $GenreLookup;
+ // 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"
+ $GenreLookupSCMPX[240] = 'Sacred';
+ $GenreLookupSCMPX[241] = 'Northern Europe';
+ $GenreLookupSCMPX[242] = 'Irish & Scottish';
+ $GenreLookupSCMPX[243] = 'Scotland';
+ $GenreLookupSCMPX[244] = 'Ethnic Europe';
+ $GenreLookupSCMPX[245] = 'Enka';
+ $GenreLookupSCMPX[246] = 'Children\'s Song';
+ $GenreLookupSCMPX[247] = 'Japanese Sky';
+ $GenreLookupSCMPX[248] = 'Japanese Heavy Rock';
+ $GenreLookupSCMPX[249] = 'Japanese Doom Rock';
+ $GenreLookupSCMPX[250] = 'Japanese J-POP';
+ $GenreLookupSCMPX[251] = 'Japanese Seiyu';
+ $GenreLookupSCMPX[252] = 'Japanese Ambient Techno';
+ $GenreLookupSCMPX[253] = 'Japanese Moemoe';
+ $GenreLookupSCMPX[254] = 'Japanese Tokusatsu';
+ //$GenreLookupSCMPX[255] = 'Japanese Anime';
+ }
+
+ return ($allowSCMPXextended ? $GenreLookupSCMPX : $GenreLookup);
+ }
+
+ public static function LookupGenreName($genreid, $allowSCMPXextended=true) {
+ switch ($genreid) {
+ case 'RX':
+ case 'CR':
+ break;
+ default:
+ if (!is_numeric($genreid)) {
+ return false;
+ }
+ $genreid = intval($genreid); // to handle 3 or '3' or '03'
+ break;
+ }
+ $GenreLookup = self::ArrayOfGenres($allowSCMPXextended);
+ return (isset($GenreLookup[$genreid]) ? $GenreLookup[$genreid] : false);
+ }
+
+ public static function LookupGenreID($genre, $allowSCMPXextended=false) {
+ $GenreLookup = self::ArrayOfGenres($allowSCMPXextended);
+ $LowerCaseNoSpaceSearchTerm = strtolower(str_replace(' ', '', $genre));
+ foreach ($GenreLookup as $key => $value) {
+ if (strtolower(str_replace(' ', '', $value)) == $LowerCaseNoSpaceSearchTerm) {
+ return $key;
+ }
+ }
+ return false;
+ }
+
+ public static function StandardiseID3v1GenreName($OriginalGenre) {
+ if (($GenreID = self::LookupGenreID($OriginalGenre)) !== false) {
+ return self::LookupGenreName($GenreID);
+ }
+ return $OriginalGenre;
+ }
+
+ public static function GenerateID3v1Tag($title, $artist, $album, $year, $genreid, $comment, $track='') {
+ $ID3v1Tag = 'TAG';
+ $ID3v1Tag .= str_pad(trim(substr($title, 0, 30)), 30, "\x00", STR_PAD_RIGHT);
+ $ID3v1Tag .= str_pad(trim(substr($artist, 0, 30)), 30, "\x00", STR_PAD_RIGHT);
+ $ID3v1Tag .= str_pad(trim(substr($album, 0, 30)), 30, "\x00", STR_PAD_RIGHT);
+ $ID3v1Tag .= str_pad(trim(substr($year, 0, 4)), 4, "\x00", STR_PAD_LEFT);
+ if (!empty($track) && ($track > 0) && ($track <= 255)) {
+ $ID3v1Tag .= str_pad(trim(substr($comment, 0, 28)), 28, "\x00", STR_PAD_RIGHT);
+ $ID3v1Tag .= "\x00";
+ if (gettype($track) == 'string') {
+ $track = (int) $track;
+ }
+ $ID3v1Tag .= chr($track);
+ } else {
+ $ID3v1Tag .= str_pad(trim(substr($comment, 0, 30)), 30, "\x00", STR_PAD_RIGHT);
+ }
+ if (($genreid < 0) || ($genreid > 147)) {
+ $genreid = 255; // 'unknown' genre
+ }
+ switch (gettype($genreid)) {
+ case 'string':
+ case 'integer':
+ $ID3v1Tag .= chr(intval($genreid));
+ break;
+ default:
+ $ID3v1Tag .= chr(255); // 'unknown' genre
+ break;
+ }
+
+ return $ID3v1Tag;
+ }
+
+}
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