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ID3
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module.tag.id3v1.php
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<?php ///////////////////////////////////////////////////////////////// /// getID3() by James Heinrich <info@getid3.org> // // available at https://github.com/JamesHeinrich/getID3 // // or https://www.getid3.org // // or http://getid3.sourceforge.net // // see readme.txt for more details // ///////////////////////////////////////////////////////////////// // // // module.tag.id3v1.php // // module for analyzing ID3v1 tags // // dependencies: NONE // // /// ///////////////////////////////////////////////////////////////// if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers exit; } class getid3_id3v1 extends getid3_handler { /** * @return bool */ public function Analyze() { $info = &$this->getid3->info; if (!getid3_lib::intValueSupported($info['filesize'])) { $this->warning('Unable to check for ID3v1 because file is larger than '.round(PHP_INT_MAX / 1073741824).'GB'); return false; } if($info['filesize'] < 256) { $this->fseek(-128, SEEK_END); $preid3v1 = ''; $id3v1tag = $this->fread(128); } else { $this->fseek(-256, SEEK_END); $preid3v1 = $this->fread(128); $id3v1tag = $this->fread(128); } if (substr($id3v1tag, 0, 3) == 'TAG') { $info['avdataend'] = $info['filesize'] - 128; $ParsedID3v1 = array(); $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")) { $ParsedID3v1['track_number'] = ord(substr($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 (empty($ParsedID3v1['genre']) || ($ParsedID3v1['genre'] == 'Unknown')) { unset($ParsedID3v1['genre']); } foreach ($ParsedID3v1 as $key => $value) { $ParsedID3v1['comments'][$key][0] = $value; } $ID3v1encoding = $this->getid3->encoding_id3v1; if ($this->getid3->encoding_id3v1_autodetect) { // ID3v1 encoding detection hack START // ID3v1 is defined as always using ISO-8859-1 encoding, but it is not uncommon to find files tagged with ID3v1 using Windows-1251 or other character sets // Since ID3v1 has no concept of character sets there is no certain way to know we have the correct non-ISO-8859-1 character set, but we can guess foreach ($ParsedID3v1['comments'] as $tag_key => $valuearray) { foreach ($valuearray as $key => $value) { if (preg_match('#^[\\x00-\\x40\\x80-\\xFF]+$#', $value) && !ctype_digit((string) $value)) { // check for strings with only characters above chr(128) and punctuation/numbers, but not just numeric strings (e.g. track numbers or years) foreach (array('Windows-1251', 'KOI8-R') as $id3v1_bad_encoding) { if (function_exists('mb_convert_encoding') && @mb_convert_encoding($value, $id3v1_bad_encoding, $id3v1_bad_encoding) === $value) { $ID3v1encoding = $id3v1_bad_encoding; $this->warning('ID3v1 detected as '.$id3v1_bad_encoding.' text encoding in '.$tag_key); break 3; } elseif (function_exists('iconv') && @iconv($id3v1_bad_encoding, $id3v1_bad_encoding, $value) === $value) { $ID3v1encoding = $id3v1_bad_encoding; $this->warning('ID3v1 detected as '.$id3v1_bad_encoding.' text encoding in '.$tag_key); break 3; } } } } } // ID3v1 encoding detection hack END } // 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_number']) ? $ParsedID3v1['track_number'] : '')); $ParsedID3v1['padding_valid'] = true; if ($id3v1tag !== $GoodFormatID3v1tag) { $ParsedID3v1['padding_valid'] = false; $this->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; $info['id3v1']['encoding'] = $ID3v1encoding; } if (substr($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 $this->warning('Duplicate ID3v1 tag detected - this has been known to happen with iTunes'); $info['avdataend'] -= 128; } } return true; } /** * @param string $str * * @return string */ public static function cutfield($str) { return trim(substr($str, 0, strcspn($str, "\x00"))); } /** * @param bool $allowSCMPXextended * * @return string[] */ public static function ArrayOfGenres($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', 148 => 'Abstract', 149 => 'Art Rock', 150 => 'Baroque', 151 => 'Bhangra', 152 => 'Big Beat', 153 => 'Breakbeat', 154 => 'Chillout', 155 => 'Downtempo', 156 => 'Dub', 157 => 'EBM', 158 => 'Eclectic', 159 => 'Electro', 160 => 'Electroclash', 161 => 'Emo', 162 => 'Experimental', 163 => 'Garage', 164 => 'Global', 165 => 'IDM', 166 => 'Illbient', 167 => 'Industro-Goth', 168 => 'Jam Band', 169 => 'Krautrock', 170 => 'Leftfield', 171 => 'Lounge', 172 => 'Math Rock', 173 => 'New Romantic', 174 => 'Nu-Breakz', 175 => 'Post-Punk', 176 => 'Post-Rock', 177 => 'Psytrance', 178 => 'Shoegaze', 179 => 'Space Rock', 180 => 'Trop Rock', 181 => 'World Music', 182 => 'Neoclassical', 183 => 'Audiobook', 184 => 'Audio Theatre', 185 => 'Neue Deutsche Welle', 186 => 'Podcast', 187 => 'Indie-Rock', 188 => 'G-Funk', 189 => 'Dubstep', 190 => 'Garage Rock', 191 => 'Psybient', 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); } /** * @param string $genreid * @param bool $allowSCMPXextended * * @return string|false */ public static function LookupGenreName($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); } /** * @param string $genre * @param bool $allowSCMPXextended * * @return string|false */ public static function LookupGenreID($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; } /** * @param string $OriginalGenre * * @return string|false */ public static function StandardiseID3v1GenreName($OriginalGenre) { if (($GenreID = self::LookupGenreID($OriginalGenre)) !== false) { return self::LookupGenreName($GenreID); } return $OriginalGenre; } /** * @param string $title * @param string $artist * @param string $album * @param string $year * @param int $genreid * @param string $comment * @param int|string $track * * @return string */ public static function GenerateID3v1Tag($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; } }
/home/sudancam/www/./wp-includes/customize/./../ID3/module.tag.id3v1.php