<?php
require_once H."sys/inc/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");
$mqr = get_magic_quotes_runtime();
if (! ($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($f);
if ($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();
$r = fread($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);
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();
$r = fread($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);
if ($this->debug) print($this->debugend);
return $success;
} 
function _readframe() {
if ($this->debug) print($this->debugbeg . "_readframe()<HR>\n");
$file = $this->file;
$mqr = get_magic_quotes_runtime();
if (! ($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);
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'
);
} 
} 
?>