<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org> //
// available at http://getid3.sourceforge.net ///
// or http://www.getid3.org ///
/////////////////////////////////////////////////////////////////
// //
// getid3.id3v1.php - part of getID3() //
// See getid3.readme.txt for more details //
// //
/////////////////////////////////////////////////////////////////
function getID3v1Filepointer(&$fd, &$ThisFileInfo) {
fseek($fd, -128, SEEK_END);
$id3v1tag = fread($fd, 128);
if (substr($id3v1tag, 0, 3) == 'TAG') {
$ThisFileInfo['avdataend'] = $ThisFileInfo['filesize'] - 128;
$ThisFileInfo['id3v1']['title'] = trim(substr($id3v1tag, 3, 30));
$ThisFileInfo['id3v1']['artist'] = trim(substr($id3v1tag, 33, 30));
$ThisFileInfo['id3v1']['album'] = trim(substr($id3v1tag, 63, 30));
$ThisFileInfo['id3v1']['year'] = trim(substr($id3v1tag, 93, 4));
$ThisFileInfo['id3v1']['comment'] = substr($id3v1tag, 97, 30); // can't remove nulls yet, track detection depends on them
$ThisFileInfo['id3v1']['genreid'] = ord(substr($id3v1tag, 127, 1));
if ((substr($ThisFileInfo['id3v1']['comment'], 28, 1) === chr(0)) && (substr($ThisFileInfo['id3v1']['comment'], 29, 1) !== chr(0))) {
$ThisFileInfo['id3v1']['track'] = ord(substr($ThisFileInfo['id3v1']['comment'], 29, 1));
$ThisFileInfo['id3v1']['comment'] = substr($ThisFileInfo['id3v1']['comment'], 0, 28);
}
$ThisFileInfo['id3v1']['comment'] = trim($ThisFileInfo['id3v1']['comment']);
$ThisFileInfo['id3v1']['genre'] = LookupGenre($ThisFileInfo['id3v1']['genreid']);
foreach ($ThisFileInfo['id3v1'] as $key => $value) {
$ThisFileInfo['id3v1']['comments']["$key"][0] = $value;
}
// Do not change fileformat if already set
//if (empty($ThisFileInfo['fileformat'])) {
// $ThisFileInfo['fileformat'] = 'id3';
//}
// ID3v1 data is supposed to be padded with NULL characters, but some taggers pad with spaces
$GoodFormatID3v1tag = GenerateID3v1Tag($ThisFileInfo['id3v1']['title'], $ThisFileInfo['id3v1']['artist'], $ThisFileInfo['id3v1']['album'], $ThisFileInfo['id3v1']['year'], $ThisFileInfo['id3v1']['genreid'], $ThisFileInfo['id3v1']['comment'], @$ThisFileInfo['id3v1']['track']);
$ThisFileInfo['id3v1']['padding_valid'] = true;
if ($id3v1tag !== $GoodFormatID3v1tag) {
$ThisFileInfo['id3v1']['padding_valid'] = false;
$ThisFileInfo['warning'] .= "\n".'Some ID3v1 fields do not use NULL characters for padding';
}
$ThisFileInfo['id3v1']['tag_offset_end'] = $ThisFileInfo['filesize'];
$ThisFileInfo['id3v1']['tag_offset_start'] = $ThisFileInfo['id3v1']['tag_offset_end'] - 128;
}
return true;
}
function ArrayOfGenres() {
static $GenreLookup = array();
if (empty($GenreLookup)) {
$GenreLookup[0] = 'Blues';
$GenreLookup[1] = 'Classic Rock';
$GenreLookup[2] = 'Country';
$GenreLookup[3] = 'Dance';
$GenreLookup[4] = 'Disco';
$GenreLookup[5] = 'Funk';
$GenreLookup[6] = 'Grunge';
$GenreLookup[7] = 'Hip-Hop';
$GenreLookup[8] = 'Jazz';
$GenreLookup[9] = 'Metal';
$GenreLookup[10] = 'New Age';
$GenreLookup[11] = 'Oldies';
$GenreLookup[12] = 'Other';
$GenreLookup[13] = 'Pop';
$GenreLookup[14] = 'R&B';
$GenreLookup[15] = 'Rap';
$GenreLookup[16] = 'Reggae';
$GenreLookup[17] = 'Rock';
$GenreLookup[18] = 'Techno';
$GenreLookup[19] = 'Industrial';
$GenreLookup[20] = 'Alternative';
$GenreLookup[21] = 'Ska';
$GenreLookup[22] = 'Death Metal';
$GenreLookup[23] = 'Pranks';
$GenreLookup[24] = 'Soundtrack';
$GenreLookup[25] = 'Euro-Techno';
$GenreLookup[26] = 'Ambient';
$GenreLookup[27] = 'Trip-Hop';
$GenreLookup[28] = 'Vocal';
$GenreLookup[29] = 'Jazz+Funk';
$GenreLookup[30] = 'Fusion';
$GenreLookup[31] = 'Trance';
$GenreLookup[32] = 'Classical';
$GenreLookup[33] = 'Instrumental';
$GenreLookup[34] = 'Acid';
$GenreLookup[35] = 'House';
$GenreLookup[36] = 'Game';
$GenreLookup[37] = 'Sound Clip';
$GenreLookup[38] = 'Gospel';
$GenreLookup[39] = 'Noise';
$GenreLookup[40] = 'Alt. Rock';
$GenreLookup[41] = 'Bass';
$GenreLookup[42] = 'Soul';
$GenreLookup[43] = 'Punk';
$GenreLookup[44] = 'Space';
$GenreLookup[45] = 'Meditative';
$GenreLookup[46] = 'Instrumental Pop';
$GenreLookup[47] = 'Instrumental Rock';
$GenreLookup[48] = 'Ethnic';
$GenreLookup[49] = 'Gothic';
$GenreLookup[50] = 'Darkwave';
$GenreLookup[51] = 'Techno-Industrial';
$GenreLookup[52] = 'Electronic';
$GenreLookup[53] = 'Pop-Folk';
$GenreLookup[54] = 'Eurodance';
$GenreLookup[55] = 'Dream';
$GenreLookup[56] = 'Southern Rock';
$GenreLookup[57] = 'Comedy';
$GenreLookup[58] = 'Cult';
$GenreLookup[59] = 'Gangsta';
$GenreLookup[60] = 'Top 40';
$GenreLookup[61] = 'Christian Rap';
$GenreLookup[62] = 'Pop/Funk';
$GenreLookup[63] = 'Jungle';
$GenreLookup[64] = 'Native American';
$GenreLookup[65] = 'Cabaret';
$GenreLookup[66] = 'New Wave';
$GenreLookup[67] = 'Psychadelic';
$GenreLookup[68] = 'Rave';
$GenreLookup[69] = 'Showtunes';
$GenreLookup[70] = 'Trailer';
$GenreLookup[71] = 'Lo-Fi';
$GenreLookup[72] = 'Tribal';
$GenreLookup[73] = 'Acid Punk';
$GenreLookup[74] = 'Acid Jazz';
$GenreLookup[75] = 'Polka';
$GenreLookup[76] = 'Retro';
$GenreLookup[77] = 'Musical';
$GenreLookup[78] = 'Rock & Roll';
$GenreLookup[79] = 'Hard Rock';
$GenreLookup[80] = 'Folk';
$GenreLookup[81] = 'Folk/Rock';
$GenreLookup[82] = 'National Folk';
$GenreLookup[83] = 'Swing';
$GenreLookup[84] = 'Fast-Fusion';
$GenreLookup[85] = 'Bebob';
$GenreLookup[86] = 'Latin';
$GenreLookup[87] = 'Revival';
$GenreLookup[88] = 'Celtic';
$GenreLookup[89] = 'Bluegrass';
$GenreLookup[90] = 'Avantgarde';
$GenreLookup[91] = 'Gothic Rock';
$GenreLookup[92] = 'Progressive Rock';
$GenreLookup[93] = 'Psychedelic Rock';
$GenreLookup[94] = 'Symphonic Rock';
$GenreLookup[95] = 'Slow Rock';
$GenreLookup[96] = 'Big Band';
$GenreLookup[97] = 'Chorus';
$GenreLookup[98] = 'Easy Listening';
$GenreLookup[99] = 'Acoustic';
$GenreLookup[100] = 'Humour';
$GenreLookup[101] = 'Speech';
$GenreLookup[102] = 'Chanson';
$GenreLookup[103] = 'Opera';
$GenreLookup[104] = 'Chamber Music';
$GenreLookup[105] = 'Sonata';
$GenreLookup[106] = 'Symphony';
$GenreLookup[107] = 'Booty Bass';
$GenreLookup[108] = 'Primus';
$GenreLookup[109] = 'Porn Groove';
$GenreLookup[110] = 'Satire';
$GenreLookup[111] = 'Slow Jam';
$GenreLookup[112] = 'Club';
$GenreLookup[113] = 'Tango';
$GenreLookup[114] = 'Samba';
$GenreLookup[115] = 'Folklore';
$GenreLookup[116] = 'Ballad';
$GenreLookup[117] = 'Power Ballad';
$GenreLookup[118] = 'Rhythmic Soul';
$GenreLookup[119] = 'Freestyle';
$GenreLookup[120] = 'Duet';
$GenreLookup[121] = 'Punk Rock';
$GenreLookup[122] = 'Drum Solo';
$GenreLookup[123] = 'A Cappella';
$GenreLookup[124] = 'Euro-House';
$GenreLookup[125] = 'Dance Hall';
$GenreLookup[126] = 'Goa';
$GenreLookup[127] = 'Drum & Bass';
$GenreLookup[128] = 'Club-House';
$GenreLookup[129] = 'Hardcore';
$GenreLookup[130] = 'Terror';
$GenreLookup[131] = 'Indie';
$GenreLookup[132] = 'BritPop';
$GenreLookup[133] = 'Negerpunk';
$GenreLookup[134] = 'Polsk Punk';
$GenreLookup[135] = 'Beat';
$GenreLookup[136] = 'Christian Gangsta Rap';
$GenreLookup[137] = 'Heavy Metal';
$GenreLookup[138] = 'Black Metal';
$GenreLookup[139] = 'Crossover';
$GenreLookup[140] = 'Contemporary Christian';
$GenreLookup[141] = 'Christian Rock';
$GenreLookup[142] = 'Merengue';
$GenreLookup[143] = 'Salsa';
$GenreLookup[144] = 'Trash Metal';
$GenreLookup[145] = 'Anime';
$GenreLookup[146] = 'Jpop';
$GenreLookup[147] = 'Synthpop';
$GenreLookup[255] = 'Unknown';
$GenreLookup['CR'] = 'Cover';
$GenreLookup['RX'] = 'Remix';
}
return $GenreLookup;
}
function LookupGenre($genreid, $returnkey=false) {
if (($genreid != 'RX') && ($genreid === 'CR')) {
$genreid = (int) $genreid; // to handle 3 or '3' or '03'
}
$GenreLookup = ArrayOfGenres();
if ($returnkey) {
$LowerCaseNoSpaceSearchTerm = strtolower(str_replace(' ', '', $genreid));
foreach ($GenreLookup as $key => $value) {
if (strtolower(str_replace(' ', '', $value)) == $LowerCaseNoSpaceSearchTerm) {
return $key;
}
}
return '';
} else {
return (isset($GenreLookup[$genreid]) ? $GenreLookup[$genreid] : '');
}
}
function GenerateID3v1Tag($title, $artist, $album, $year, $genre, $comment, $track) {
$ID3v1Tag = 'TAG';
$ID3v1Tag .= str_pad(trim(substr($title, 0, 30)), 30, chr(0), STR_PAD_RIGHT);
$ID3v1Tag .= str_pad(trim(substr($artist, 0, 30)), 30, chr(0), STR_PAD_RIGHT);
$ID3v1Tag .= str_pad(trim(substr($album, 0, 30)), 30, chr(0), STR_PAD_RIGHT);
$ID3v1Tag .= str_pad(trim(substr($year, 0, 4)), 4, chr(0), STR_PAD_RIGHT);
if (isset($track) && ($track > 0) && ($track <= 255)) {
$ID3v1Tag .= str_pad(trim(substr($comment, 0, 28)), 28, chr(0), STR_PAD_RIGHT);
$ID3v1Tag .= chr(0);
if (gettype($track) == 'string') {
$track = (int) $track;
}
$ID3v1Tag .= chr($track);
} else {
$ID3v1Tag .= str_pad(trim(substr($comment, 0, 30)), 30, chr(0), STR_PAD_RIGHT);
}
if (($genre < 0) || ($genre > 147)) {
$genre = 255; // 'unknown' genre
}
if (gettype($genre) == 'string') {
$genrenumber = (int) $genre;
$ID3v1Tag .= chr($genrenumber);
} elseif (gettype($genre) == 'integer') {
$ID3v1Tag .= chr($genre);
} else {
$ID3v1Tag .= chr(255); // 'unknown' genre
}
return $ID3v1Tag;
}
function WriteID3v1($filename, $title='', $artist='', $album='', $year='', $comment='', $genre=255, $track='', $showerrors=false) {
// File MUST be writeable - CHMOD(646) at least
if (is_writeable($filename)) {
$error = '';
if ($fp_source = @fopen($filename, 'r+b')) {
fseek($fp_source, -128, SEEK_END);
if (fread($fp_source, 3) == 'TAG') {
fseek($fp_source, -128, SEEK_END); // overwrite existing ID3v1 tag
} else {
fseek($fp_source, 0, SEEK_END); // append new ID3v1 tag
}
fwrite($fp_source, GenerateID3v1Tag($title, $artist, $album, $year, $genre, $comment, $track), 128);
fclose($fp_source);
} else {
if ($showerrors) {
echo 'Could not open '.$filename.' mode "r+b"<BR>';
}
return false;
}
return true;
}
if ($showerrors) {
echo '!is_writable('.$filename.')<BR>';
}
return false;
}
function FixID3v1Padding($filename, $showerrors=false) {
// ID3v1 data is supposed to be padded with NULL characters, but some taggers incorrectly use spaces
// This function rewrites the ID3v1 tag with correct padding
$ThisFileInfo = GetAllFileInfo($filename);
if (isset($ThisFileInfo['id3v1'])) {
return WriteID3v1($filename, $ThisFileInfo['id3v1']['title'], $ThisFileInfo['id3v1']['artist'], $ThisFileInfo['id3v1']['album'], $ThisFileInfo['id3v1']['year'], $ThisFileInfo['id3v1']['comment'], $ThisFileInfo['id3v1']['genreid'], @$ThisFileInfo['id3v1']['track'], $showerrors);
}
return false;
}
function RemoveID3v1($filename, $showerrors=false) {
// File MUST be writeable - CHMOD(646) at least
if (is_writeable($filename)) {
if ($fp_source = @fopen($filename, 'r+b')) {
fseek($fp_source, -128, SEEK_END);
if (fread($fp_source, 3) == 'TAG') {
ftruncate($fp_source, filesize($filename) - 128);
} else {
// no ID3v1 tag to begin with - do nothing
}
fclose($fp_source);
} else {
$error .= 'Could not open '.$filename.' mode "r+b"<BR>';
}
if ($error) {
if ($showerrors) {
echo $error;
}
return false;
} else {
return true;
}
}
return false;
}
?>
