<?php
require_once "pear.php";
define('PEAR_MP3_ID_FNO', 1);
define('PEAR_MP3_ID_RE', 2);
define('PEAR_MP3_ID_TNF', 3);
define('PEAR_MP3_ID_NOMP3', 4);
class MP3_Id
{
var $file = false;
var $id3v1 = false;
var $id3v11 = false;
var $id3v2 = false;
var $name = '';
var $artists = '';
var $album = '';
var $year = '';
var $comment = '';
var $track = 0;
var $genre = '';
var $genreno = 255;
var $studied = false;
var $mpeg_ver = 0;
var $layer = 0;
var $bitrate = 0;
var $crc = false;
var $frequency = 0;
var $encoding_type = 0;
var $samples_per_frame = 0;
var $samples = 0;
var $musicsize = -1;
var $frames = 0;
var $quality = 0;
var $padding = false;
var $private = false;
var $mode = '';
var $copyright = false;
var $original = false;
var $emphasis = '';
var $filesize = -1;
var $frameoffset = -1;
var $lengthh = false;
var $length = false;
var $lengths = false;
var $error = false;
var $debug = false;
var $debugbeg = '<DIV STYLE="margin: 0.5 em; padding: 0.5 em; border-width: thin; border-color: black; border-style: solid">';
var $debugend = '</DIV>';
function MP3_Id($study = false)
{
if (defined('ID3_SHOW_DEBUG'))
$this->debug = true;
$this->study = ($study || defined('ID3_AUTO_STUDY'));
}
function read($file = "")
{
if ($this->debug)
print ($this->debugbeg . "id3('$file')<HR>\n");
if (!empty($file))
$this->file = $file;
if ($this->debug)
print ($this->debugend);
return $this->_read_v1();
}
function setTag($name, $value)
{
if (is_array($name))
{
foreach ($name as $n => $v)
{
$this->$n = $v;
}
} else
{
$this->$name = $value;
}
}
function getTag($name, $default = 0)
{
if (empty($this->$name))
{
return $default;
} else
{
return $this->$name;
}
}
function write($v1 = true)
{
if ($this->debug)
print ($this->debugbeg . "write()<HR>\n");
if ($v1)
{
$this->_write_v1();
}
if ($this->debug)
print ($this->debugend);
}
function study()
{
$this->studied = true;
$this->_readframe();
}
function copy($from)
{
if ($this->debug)
print ($this->debugbeg . "copy(\$from)<HR>\n");
$this->name = $from->name;
$this->artists = $from->artists;
$this->album = $from->album;
$this->year = $from->year;
$this->comment = $from->comment;
$this->track = $from->track;
$this->genre = $from->genre;
$this->genreno = $from->genreno;
if ($this->debug)
print ($this->debugend);
}
function remove($id3v1 = true, $id3v2 = true)
{
if ($this->debug)
print ($this->debugbeg . "remove()<HR>\n");
if ($id3v1)
{
$this->_remove_v1();
}
if ($id3v2)
{
}
if ($this->debug)
print ($this->debugend);
}
function _read_v1()
{
if ($this->debug)
print ($this->debugbeg . "_read_v1()<HR>\n");
$mqr = get_magic_quotes_runtime();
//set_magic_quotes_runtime(0);
if (!($f = @fopen($this->file, 'rb')))
{
return PEAR::raiseError("Unable to open " . $this->file, PEAR_MP3_ID_FNO);
}
if (fseek($f, -128, SEEK_END) == -1)
{
return PEAR::raiseError('Unable to see to end - 128 of ' . $this->file, PEAR_MP3_ID_RE);
}
$r = fread($f, 128);
fclose($f);
//set_magic_quotes_runtime($mqr);
if ($this->debug)
{
$unp = unpack('H*raw', $r);
print_r($unp);
}
$id3tag = $this->_decode_v1($r);
//if (!PEAR::isError($id3tag))
//{
$this->id3v1 = true;
$tmp = explode(Chr(0), $id3tag['NAME']);
$this->name = $tmp[0];
$tmp = explode(Chr(0), $id3tag['ARTISTS']);
$this->artists = $tmp[0];
$tmp = explode(Chr(0), $id3tag['ALBUM']);
$this->album = $tmp[0];
$tmp = explode(Chr(0), $id3tag['YEAR']);
$this->year = $tmp[0];
$tmp = explode(Chr(0), $id3tag['COMMENT']);
$this->comment = $tmp[0];
if (isset($id3tag['TRACK']))
{
$this->id3v11 = true;
$this->track = $id3tag['TRACK'];
}
$this->genreno = $id3tag['GENRENO'];
$this->genre = $id3tag['GENRE'];
//} else
//{
// return $id3tag;
//}
if ($this->debug)
print ($this->debugend);
}
function _decode_v1($rawtag)
{
if ($this->debug)
print ($this->debugbeg . "_decode_v1(\$rawtag)<HR>\n");
if ($rawtag[125] == Chr(0) and $rawtag[126] != Chr(0))
{
$format = 'a3TAG/a30NAME/a30ARTISTS/a30ALBUM/a4YEAR/a28COMMENT/x1/C1TRACK/C1GENRENO';
} else
{
$format = 'a3TAG/a30NAME/a30ARTISTS/a30ALBUM/a4YEAR/a30COMMENT/C1GENRENO';
}
$id3tag = unpack($format, $rawtag);
if ($this->debug)
print_r($id3tag);
if ($id3tag['TAG'] == 'TAG')
{
$id3tag['GENRE'] = $this->getgenre($id3tag['GENRENO']);
} else
{
$id3tag = PEAR::raiseError('TAG not found', PEAR_MP3_ID_TNF);
}
if ($this->debug)
print ($this->debugend);
return $id3tag;
}
function _write_v1()
{
if ($this->debug)
print ($this->debugbeg . "_write_v1()<HR>\n");
$file = $this->file;
if (!($f = @fopen($file, 'r+b')))
{
return PEAR::raiseError("Unable to open " . $file, PEAR_MP3_ID_FNO);
}
if (fseek($f, -128, SEEK_END) == -1)
{
return PEAR::raiseError("Unable to see to end - 128 of " . $file, PEAR_MP3_ID_RE);
}
$this->genreno = $this->getgenreno($this->genre, $this->genreno);
$newtag = $this->_encode_v1();
$mqr = get_magic_quotes_runtime();
set_magic_quotes_runtime(0);
$r = fread($f, 128);
if (!PEAR::isError($this->_decode_v1($r)))
{
if (fseek($f, -128, SEEK_END) == -1)
{
return PEAR::raiseError("Unable to see to end - 128 of " . $file, PEAR_MP3_ID_RE);
}
fwrite($f, $newtag);
} else
{
if (fseek($f, 0, SEEK_END) == -1)
{
return PEAR::raiseError("Unable to see to end of " . $file, PEAR_MP3_ID_RE);
}
fwrite($f, $newtag);
}
fclose($f);
set_magic_quotes_runtime($mqr);
if ($this->debug)
print ($this->debugend);
}
function _encode_v1()
{
if ($this->debug)
print ($this->debugbeg . "_encode_v1()<HR>\n");
if ($this->track)
{
$id3pack = 'a3a30a30a30a4a28x1C1C1';
$newtag = pack($id3pack, 'TAG', $this->name, $this->artists, $this->album, $this->year, $this->comment, $this->track, $this->genreno);
} else
{
$id3pack = 'a3a30a30a30a4a30C1';
$newtag = pack($id3pack, 'TAG', $this->name, $this->artists, $this->album, $this->year, $this->comment, $this->genreno);
}
if ($this->debug)
{
print ('id3pack: ' . $id3pack . "\n");
$unp = unpack('H*new', $newtag);
print_r($unp);
}
if ($this->debug)
print ($this->debugend);
return $newtag;
}
function _remove_v1()
{
if ($this->debug)
print ($this->debugbeg . "_remove_v1()<HR>\n");
$file = $this->file;
if (!($f = fopen($file, 'r+b')))
{
return PEAR::raiseError("Unable to open " . $file, PEAR_MP3_ID_FNO);
}
if (fseek($f, -128, SEEK_END) == -1)
{
return PEAR::raiseError('Unable to see to end - 128 of ' . $file, PEAR_MP3_ID_RE);
}
$mqr = get_magic_quotes_runtime();
set_magic_quotes_runtime(0);
$r = fread($f, 128);
$success = false;
if (!PEAR::isError($this->_decode_v1($r)))
{
$size = filesize($this->file) - 128;
if ($this->debug)
print ('size: old: ' . filesize($this->file));
$success = ftruncate($f, $size);
clearstatcache();
if ($this->debug)
print (' new: ' . filesize($this->file));
}
fclose($f);
set_magic_quotes_runtime($mqr);
if ($this->debug)
print ($this->debugend);
return $success;
}
function _readframe()
{
if ($this->debug)
print ($this->debugbeg . "_readframe()<HR>\n");
$file = $this->file;
$mqr = get_magic_quotes_runtime();
//set_magic_quotes_runtime(0);
if (!($f = fopen($file, 'rb')))
{
if ($this->debug)
print ($this->debugend);
return PEAR::raiseError("Unable to open " . $file, PEAR_MP3_ID_FNO);
}
$this->filesize = filesize($file);
do
{
while (fread($f, 1) != Chr(255))
{
if ($this->debug)
echo "Find...\n";
if (feof($f))
{
if ($this->debug)
print ($this->debugend);
return PEAR::raiseError("No mpeg frame found", PEAR_MP3_ID_NOMP3);
}
}
fseek($f, ftell($f) - 1);
$frameoffset = ftell($f);
$r = fread($f, 4);
$bits = sprintf("%'08b%'08b%'08b%'08b", ord($r{0}), ord($r{1}), ord($r{2}), ord($r{3}));
} while (!$bits[8] and !$bits[9] and !$bits[10]);
if ($this->debug)
print ('Bits: ' . $bits . "\n");
$this->frameoffset = $frameoffset;
if ($bits[11] == 0)
{
if (($bits[24] == 1) && ($bits[25] == 1))
{
$vbroffset = 9;
} else
{
$vbroffset = 17;
}
} else
if ($bits[12] == 0)
{
if (($bits[24] == 1) && ($bits[25] == 1))
{
$vbroffset = 9;
} else
{
$vbroffset = 17;
}
} else
{
if (($bits[24] == 1) && ($bits[25] == 1))
{
$vbroffset = 17;
} else
{
$vbroffset = 32;
}
}
fseek($f, ftell($f) + $vbroffset);
$r = fread($f, 4);
switch ($r)
{
case 'Xing':
$this->encoding_type = 'VBR';
case 'Info':
if ($this->debug)
print ('Encoding Header: ' . $r . "\n");
$r = fread($f, 4);
$vbrbits = sprintf("%'08b", ord($r{3}));
if ($this->debug)
print ('XING Header Bits: ' . $vbrbits . "\n");
if ($vbrbits[7] == 1)
{
$r = fread($f, 4);
$this->frames = unpack('N', $r);
$this->frames = $this->frames[1];
}
if ($vbrbits[6] == 1)
{
$r = fread($f, 4);
$this->musicsize = unpack('N', $r);
$this->musicsize = $this->musicsize[1];
}
if ($vbrbits[5] == 1)
{
fseek($f, ftell($f) + 100);
}
if ($vbrbits[4] == 1)
{
$r = fread($f, 4);
$this->quality = unpack('N', $r);
$this->quality = $this->quality[1];
}
break;
case 'VBRI':
default:
if ($vbroffset != 32)
{
fseek($f, ftell($f) + 32 - $vbroffset);
$r = fread($f, 4);
if ($r != 'VBRI')
{
$this->encoding_type = 'CBR';
break;
}
} else
{
$this->encoding_type = 'CBR';
break;
}
if ($this->debug)
print ('Encoding Header: ' . $r . "\n");
$this->encoding_type = 'VBR';
fseek($f, ftell($f) + 2);
fseek($f, ftell($f) + 2);
$r = fread($f, 2);
$this->quality = unpack('n', $r);
$this->quality = $this->quality[1];
$r = fread($f, 4);
$this->musicsize = unpack('N', $r);
$this->musicsize = $this->musicsize[1];
$r = fread($f, 4);
$this->frames = unpack('N', $r);
$this->frames = $this->frames[1];
}
fclose($f);
//set_magic_quotes_runtime($mqr);
if ($bits[11] == 0)
{
$this->mpeg_ver = "2.5";
$bitrates = array('1' => array(0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256, 0), '2' => array(0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, 0), '3' => array(0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112,
128, 144, 160, 0), );
} else
if ($bits[12] == 0)
{
$this->mpeg_ver = "2";
$bitrates = array('1' => array(0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256, 0), '2' => array(0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, 0), '3' => array(0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112,
128, 144, 160, 0), );
} else
{
$this->mpeg_ver = "1";
$bitrates = array('1' => array(0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448, 0), '2' => array(0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 0), '3' => array(0, 32, 40, 48, 56, 64, 80, 96, 112,
128, 160, 192, 224, 256, 320, 0), );
}
if ($this->debug)
print ('MPEG' . $this->mpeg_ver . "\n");
$layer = array(array(0, 3), array(2, 1), );
$this->layer = $layer[$bits[13]][$bits[14]];
if ($this->debug)
print ('layer: ' . $this->layer . "\n");
if ($bits[15] == 0)
{
if ($this->debug)
print ("protected (crc)\n");
$this->crc = true;
}
$bitrate = 0;
if ($bits[16] == 1)
$bitrate += 8;
if ($bits[17] == 1)
$bitrate += 4;
if ($bits[18] == 1)
$bitrate += 2;
if ($bits[19] == 1)
$bitrate += 1;
$this->bitrate = $bitrates[$this->layer][$bitrate];
$frequency = array('1' => array('0' => array(44100, 48000), '1' => array(32000, 0), ), '2' => array('0' => array(22050, 24000), '1' => array(16000, 0), ), '2.5' => array('0' => array(11025, 12000), '1' => array(8000, 0), ), );
$this->frequency = $frequency[$this->mpeg_ver][$bits[20]][$bits[21]];
$this->padding = $bits[22];
$this->private = $bits[23];
$mode = array(array('Stereo', 'Joint Stereo'), array('Dual Channel', 'Mono'), );
$this->mode = $mode[$bits[24]][$bits[25]];
$this->copyright = $bits[28];
$this->original = $bits[29];
$emphasis = array(array('none', '50/15ms'), array('', 'CCITT j.17'), );
$this->emphasis = $emphasis[$bits[30]][$bits[31]];
$samplesperframe = array('1' => array('1' => 384, '2' => 1152, '3' => 1152), '2' => array('1' => 384, '2' => 1152, '3' => 576), '2.5' => array('1' => 384, '2' => 1152, '3' => 576), );
$this->samples_per_frame = $samplesperframe[$this->mpeg_ver][$this->layer];
if ($this->encoding_type != 'VBR')
{
if ($this->bitrate == 0)
{
$s = -1;
} else
{
$s = ((8 * filesize($this->file)) / 1000) / $this->bitrate;
}
$this->length = sprintf('%02d:%02d', floor($s / 60), floor($s - (floor($s / 60) * 60)));
$this->lengthh = sprintf('%02d:%02d:%02d', floor($s / 3600), floor($s / 60), floor($s - (floor($s / 60) * 60)));
$this->lengths = (int)$s;
$this->samples = ceil($this->lengths * $this->frequency);
if (0 != $this->samples_per_frame)
{
$this->frames = ceil($this->samples / $this->samples_per_frame);
} else
{
$this->frames = 0;
}
$this->musicsize = ceil($this->lengths * $this->bitrate * 1000 / 8);
} else
{
$this->samples = $this->samples_per_frame * $this->frames;
$s = $this->samples / $this->frequency;
$this->length = sprintf('%02d:%02d', floor($s / 60), floor($s - (floor($s / 60) * 60)));
$this->lengthh = sprintf('%02d:%02d:%02d', floor($s / 3600), floor($s / 60), floor($s - (floor($s / 60) * 60)));
$this->lengths = (int)$s;
$this->bitrate = (int)(($this->musicsize / $s) * 8 / 1000);
}
if ($this->debug)
print ($this->debugend);
}
function getGenre($genreno)
{
if ($this->debug)
print ($this->debugbeg . "getgenre($genreno)<HR>\n");
$genres = $this->genres();
if (isset($genres[$genreno]))
{
$genre = $genres[$genreno];
if ($this->debug)
print ($genre . "\n");
} else
{
$genre = '';
}
if ($this->debug)
print ($this->debugend);
return $genre;
}
function getGenreNo($genre, $default = 0xff)
{
if ($this->debug)
print ($this->debugbeg . "getgenreno('$genre',$default)<HR>\n");
$genres = $this->genres();
$genreno = false;
if ($genre)
{
foreach ($genres as $no => $name)
{
if (strtolower($genre) == strtolower($name))
{
if ($this->debug)
print ("$no:'$name' == '$genre'");
$genreno = $no;
}
}
}
if ($genreno === false)
$genreno = $default;
if ($this->debug)
print ($this->debugend);
return $genreno;
}
function genres()
{
return 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 => 'Alternative 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', 60 => 'Top 40', 61 => 'Christian Rap', 62 => 'Pop/Funk', 63 => 'Jungle', 64 => 'Native US', 65 => 'Cabaret', 66 => 'New Wave', 67 => 'Psychadelic', 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 => 'Rhytmic Soul', 119 =>
'Freestyle', 120 => 'Duet', 121 => 'Punk Rock', 122 => 'Drum Solo', 123 => 'Acapella', 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 => 'Trash Metal', 145 => 'Anime', 146 => 'Jpop', 147 => 'Synthpop');
}
}