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Tutorials mp3 Klasse

 

mp3 Klasse

Eine Klasse um ID Tags von mp3 Files auszulesen

Script:

<?php
// Klassenversion
define('MP3INFO_VERSION','0.2.2');
// TagVersionen
define('MP3INFO_TV_NONE',0);
define('MP3INFO_TV_V1',1);
define('MP3INFO_TV_V11',2);
define('MP3INFO_TV_V2',3);
// MPeg-Versionen
define('MP3INFO_MV_MPEG25',0);
define('MP3INFO_MV_UNKNOWN',1);
define('MP3INFO_MV_MPEG2',2);
define('MP3INFO_MV_MPEG1',3);
// Layer-Versionen
define('MP3INFO_LY_UNKNOWN',0);
define('MP3INFO_LY_LAYER3',1);
define('MP3INFO_LY_LAYER2',2);
define('MP3INFO_LY_LAYER1',3);
// Kanäle
define('MP3INFO_CH_STEREO',0);
define('MP3INFO_CH_JOINTSTEREO',1);
define('MP3INFO_CH_DUALCHANNEL',2);
define('MP3INFO_CH_MONO',3);
// Emphasis
define('MP3INFO_EM_NONE',0);
define('MP3INFO_EM_5015MS',1);
define('MP3INFO_EM_UNNAMED',2);
define('MP3INFO_EM_CCITTJ17',3);


/*** Klassendefinition ***/
class mp3info
{
// Allgemeine Informationen
var $filename; // Dateiname
var $size; // Dateigröße

// ID3v1/ID3v1.1 Tag
var $title; // Titel
var $artist; // Interpret
var $album; // Album
var $year; // Jahr
var $comment; // Kommentar
var $track; // Track
var $genreID; // Genrenummer
var $genreName; // Genrename
var $tagVersion; // ID3-Tag-Version (MP3INFO_TV_NONE,MP3INFO_TV_V1,MP3INFO_TV_V11,MP3INFO_TV_V2)

// Header
var $headerFoundAt; // Offset des MP3-Headers
var $mpegVersion; // MPeg-Version (MP3INFO_MV_...)
var $layer; // Layer (MP3INFO_LY_...)
var $bitrate; // Bitrate
var $crc; // CRC
var $frequence; // Sample-Rate
var $channels; // Kanäle (MP3INFO_CH_...)
var $copyright; // urheberrechlich geschützt?
var $orignal; // Original?
var $frames; // Frameanzahl
var $length; // Länge in Sekunden
var $emphasis; // Emphasis

// Klassen-Konstruktor dem der Dateiname der MP3-Datei übergeben werden muss
function mp3info($filename)
{
if(!file_exists($filename)) die("Datei $filename existiert nicht!");
if(filesize($filename) < 128) die("Datei $filename ist kleiner als 128 Byte!");
$this->filename = $filename;
$this->size = filesize($this->filename);
$this->getID3Tag();
$this->getHeader();
}

// Liest den ID3 Version1 oder Version1.1 Tag aus
function getID3Tag()
{
//***
$genreNames = 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=>'AlternRock',41=>'Bass',42=>'Soul',43=>'Punk',44=>'Space',
45=>'Mediative',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 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 Hand',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=>'Free Style',120=>'Duet',121=>'Punk Rock',
123=>'A capella',124=>'Euro-House',125=>'Dance Hall');

//***
$this->tagVersion = MP3INFO_TV_NONE;
$fh = fopen($this->filename,'r');
if($fh)
{
fseek($fh,-128,SEEK_END);
$buffer = fread($fh,128);
fclose($fh);
if(SubStr($buffer,0,3) == 'TAG')
{
$this->tagVersion = MP3INFO_TV_V1;
$this->title = Trim(SubStr($buffer,3,30));
$this->artist = Trim(SubStr($buffer,33,30));
$this->album = Trim(SubStr($buffer,63,30));
$this->year = Trim(SubStr($buffer,93,4));
if((Ord(SubStr($buffer,125,1)) == 0) && (Ord(SubStr($buffer,126,1)) <> 0))
{
$this->comment = Trim(SubStr($buffer,97,28));
$this->track = Ord(SubStr($buffer,126,1));
$this->tagVersion = MP3INFO_TV_V11;
}
else
{
$this->comment = Trim(SubStr($buffer,97,30));
}
$this->genreID = Ord(SubStr($buffer,127,1));
$this->genreName = $genreNames[$this->genreID];
}
}
}

// Liest den Header der MP3-Datei aus
function getHeader()
{
//***
$bitmask = Array();
$bitrates = Array();
$bitrates[] = Array(0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,0);
$bitrates[] = Array(0,32,48,56,64,80,96,112,128,160,192,224,256,320,384,0);
$bitrates[] = Array(0,32,40,48,56,64,80,96,112,128,160,192,224,256,320,0);
$bitrates[] = Array(0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,0);
$bitrates[] = Array(0,32,48,56,64,80,96,112,128,160,192,224,256,320,384,0);
$bitrates[] = Array(0,8,16,24,32,64,80,56,64,128,160,112,128,256,320,0);
$frequencies = Array();
$frequencies[] = Array(44100,48000,32000,0);
$frequencies[] = Array(22050,24000,16000,0);

//***
$fh = fopen($this->filename,'r');
if($fh)
{
$h1 = -1;
$h2 = -1;
$offset = -1;
do {
$offset++;
fseek($fh,$offset);
$h1 = fread($fh,1);
$h2 = fread($fh,1);
if((ord($h1) == 255) && (ord($h2) == 251)) break;
} while($offset < ($this->size - 4));
if($offset > ($this->size - 4)) break;
$this->headerFoundAt = $offset;
fseek($fh,$offset);
$buffer = fread($fh,4);
fclose($fh);
for($i=0;$i<strLen($buffer);$i++)
{
$buf = SubStr($buffer,$i,1);
if ((ord($buf) & 128) == 128) { $bitmask[($i*8)] = 1; } else { $bitmask[($i*8)] = 0; }
if ((ord($buf) & 64 ) == 64 ) { $bitmask[($i*8)+1] = 1; } else { $bitmask[($i*8)+1] = 0; }
if ((ord($buf) & 32 ) == 32 ) { $bitmask[($i*8)+2] = 1; } else { $bitmask[($i*8)+2] = 0; }
if ((ord($buf) & 16 ) == 16 ) { $bitmask[($i*8)+3] = 1; } else { $bitmask[($i*8)+3] = 0; }
if ((ord($buf) & 8 ) == 8 ) { $bitmask[($i*8)+4] = 1; } else { $bitmask[($i*8)+4] = 0; }
if ((ord($buf) & 4 ) == 4 ) { $bitmask[($i*8)+5] = 1; } else { $bitmask[($i*8)+5] = 0; }
if ((ord($buf) & 2 ) == 2 ) { $bitmask[($i*8)+6] = 1; } else { $bitmask[($i*8)+6] = 0; }
if ((ord($buf) & 1 ) == 1 ) { $bitmask[($i*8)+7] = 1; } else { $bitmask[($i*8)+7] = 0; }
}
// Mpeg-Version
$x = 0;
if($bitmask[11]) $x += 2;
if($bitmask[12]) $x++;
$this->mpegVersion = $x;
// Layer
$x = 0;
if($bitmask[13]) $x += 2;
if($bitmask[14]) $x++;
$this->layer = $x;
// Bitrate
$x = 0;
if((($this->mpegVersion == MP3INFO_MV_MPEG1) || ($this->mpegVersion == MP3INFO_MV_UNKNOWN)) && ($this->layer == MP3INFO_LY_LAYER1)) $y = 0;
if((($this->mpegVersion == MP3INFO_MV_MPEG1) || ($this->mpegVersion == MP3INFO_MV_UNKNOWN)) && ($this->layer == MP3INFO_LY_LAYER2)) $y = 1;
if((($this->mpegVersion == MP3INFO_MV_MPEG1) || ($this->mpegVersion == MP3INFO_MV_UNKNOWN)) && ($this->layer == MP3INFO_LY_LAYER3)) $y = 2;
if((($this->mpegVersion == MP3INFO_MV_MPEG2) || ($this->mpegVersion == MP3INFO_MV_MPEG25)) && ($this->layer == MP3INFO_LY_LAYER1)) $y = 3;
if((($this->mpegVersion == MP3INFO_MV_MPEG2) || ($this->mpegVersion == MP3INFO_MV_MPEG25)) && ($this->layer == MP3INFO_LY_LAYER2)) $y = 4;
if((($this->mpegVersion == MP3INFO_MV_MPEG2) || ($this->mpegVersion == MP3INFO_MV_MPEG25)) && ($this->layer == MP3INFO_LY_LAYER3)) $y = 5;
if($bitmask[16]) $x += 8;
if($bitmask[17]) $x += 4;
if($bitmask[18]) $x += 2;
if($bitmask[19]) $x += 1;
$this->bitrate = $bitrates[$y][$x];
// prot_bit
$this->crc = $bitmask[15];
// Frequenz
$x = 0;
$y = 0;
if($bitmask[20]) $x += 2;
if($bitmask[21]) $x++;
if(!$bitmask[12]) $y++;
$this->frequence = $frequencies[$y][$x];
// Kanäle
$x = 0;
if($bitmask[24]) $x += 2;
if($bitmask[25]) $x++;
$this->channels = $x;
// Copyright
$this->copyright = $bitmask[28];
// Original
$this->original = $bitmask[29];
// Emphasis
$x = 0;
if($bitmask[30]) $x += 2;
if($bitmask[31]) $x++;
$this->emphasis = $x;
// Framesize
if(($this->mpegVersion == MP3INFO_MV_MPEG1) || ($this->mpegVersion == MP3INFO_MV_UNKNOWN)) $y = 0;
if(($this->mpegVersion == MP3INFO_MV_MPEG2) || ($this->mpegVersion == MP3INFO_MV_25)) $y = 1;
if($this->frequence > 0)
{
$x = floor(($this->bitrate * 144000) / $this->frequence);
}
else
{
$x = floor(($this->bitrate * 144000) / 44100);
}
if(!$bitmask[15]) $x++;
$framesize = $x;
// Frameanzahl
if(($this->tagVersion == MP3INFO_TV_V1) || ($this->tagVersion == MP3INFO_TV_V11)): $y = 128; else: $y = 0; endif;
$x = floor(($this->size - $y - $this->headerFoundAt) / $framesize);
$this->frames = $x;
// Länge
$x = floor(($this->size - $y - $this->headerFoundAt) / ($this->bitrate * 1000 / 8));
$this->length = $x;
}
}

// Gibt den Header ähnlich der phpinfo()-Funktion aus
function printInfo()
{
//***
$tagversions = Array('none','ID3v1','ID3v1.1','ID3v2');
$mpegversions = Array('Mpeg 2.5','unknown','Mpeg 2.0','Mpeg 1.0');
$layers = Array('unknown','Layer 3','Layer 2','Layer 1');
$channels = Array('Stereo','Joint Stereo','Dualchannel','Mono');
$emphasises = Array('none','50/15 ms','unnamed','CCITT j1.7');
$yes_no = Array('no','yes');

//***
echo '<div style="border:solid 1px #000000; padding:3px; width:50%">';
echo '<table style="width:100%; font-family:Verdana" cellpadding="0" cellspacing="0">';
echo '<tr><td width="100%" style="background-color:#003366;padding:3px;color:#FFFFFF;" colspan="2">ID3 (v1/v1.1)</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Titel:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$this->title.'</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Interpret:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$this->artist.'</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Album:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$this->album.'</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Jahr:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$this->year.'</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Kommentar:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$this->comment.'</td></tr>';
if($this->tagVersion == MP3INFO_TV_V11)
{
echo '<tr><td style="background-color:#C1D2EE; padding:3px; font-size:12px">Track:</td><td style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$this->track.'</td></tr>';
}
echo '<tr><td style="background-color:#C1D2EE; padding:3px; font-size:12px">Genre:</td><td style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$this->genreName.' ('.$this->genreID.')</td></tr>';
echo '</table>';
echo '<table style="width:100%; font-family:Verdana" cellpadding="0" cellspacing="0">';
echo '<tr><td width="100%" style="background-color:#003366;padding:3px;color:#FFFFFF" colspan="2">Headerdetails</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Headerposition:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$this->headerFoundAt.' Byte (Offset: '.sprintf('0x%X',$this->headerFoundAt).')</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Mpeg-Version:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$mpegversions[$this->mpegVersion].'</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Layer:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$layers[$this->layer].'</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Bitrate:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$this->bitrate.' kbit/s</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">CRC:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$yes_no[$this->crc].'</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Frequenz:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$this->frequence.' Hz</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Kanäle:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$channels[$this->channels].'</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Copyright:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$yes_no[$this->copyright].'</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Original:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$yes_no[$this->original].'</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Frames:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$this->frames.'</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Länge:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$this->length.' s</td></tr>';
echo '<tr><td width="50%" style="background-color:#C1D2EE;padding:3px;font-size:12px">Emphasis:</td><td width="50%" style="background-color:#EEEEEE; padding:3px; font-size:12px">'.$emphasises[$this->emphasis].'</td></tr>';
echo '</table>';
echo '</div>';
}
}

?>

 
Seiten : 1
hinzugefügt am : 28.01.2005
Autor : Lobkowitz
Listings ID : 658
Status zum lesen : Gast
gelesen : 5520 mal
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