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class MP3 {
var $id3_genres_array = array(
'Blues', 'Classic Rock', 'Country', 'Dance', 'Disco', 'Funk', 'Grunge', 'Hip-Hop', 'Jazz', 'Metal', 'New Age', 'Oldies', 'Other', 'Pop', 'R&B', 'Rap', 'Reggae', 'Rock', 'Techno', 'Industrial',
'Alternative', 'Ska', 'Death Metal', 'Pranks', 'Soundtrack', 'Euro-Techno', 'Ambient', 'Trip-Hop', 'Vocal', 'Jazz+Funk', 'Fusion', 'Trance', 'Classical', 'Instrumental', 'Acid', 'House',
'Game', 'Sound Clip', 'Gospel', 'Noise', 'AlternRock', 'Bass', 'Soul', 'Punk', 'Space', 'Meditative', 'Instrumental Pop', 'Instrumental Rock', 'Ethnic', 'Gothic', 'Darkwave',
'Techno-Industrial', 'Electronic', 'Pop-Folk', 'Eurodance', 'Dream', 'Southern Rock', 'Comedy', 'Cult', 'Gangsta', 'Top 40', 'Christian Rap', 'Pop/Funk', 'Jungle', 'Native American', 'Cabaret',
'New Wave', 'Psychadelic', 'Rave', 'Showtunes', 'Trailer', 'Lo-Fi', 'Tribal', 'Acid Punk', 'Acid Jazz', 'Polka', 'Retro', 'Musical', 'Rock & Roll', 'Hard Rock', 'Folk', 'Folk/Rock', 'National Folk',
'Swing', 'Fast Fusion', 'Bebob', 'Latin', 'Revival', 'Celtic', 'Bluegrass', 'Avantgarde', 'Gothic Rock', 'Progressive Rock', 'Psychedelic Rock', 'Symphonic Rock', 'Slow Rock', 'Big Band',
'Chorus', 'Easy Listening', 'Acoustic', 'Humour', 'Speech', 'Chanson', 'Opera', 'Chamber Music', 'Sonata', 'Symphony', 'Booty Bass', 'Primus', 'Porn Groove', 'Satire', 'Slow Jam', 'Club', 'Tango', 'Samba',
'Folklore', 'Ballad', 'Power Ballad', 'Rhythmic Soul', 'Freestyle', 'Duet', 'Punk Rock', 'Drum Solo', 'Acapella', 'Euro-house', 'Dance Hall'
);
var $info_bitrates = array(
1 => array(
1 => array( 0 => 0, 16 => 32, 32 => 64, 48 => 96, 64 => 128, 80 => 160, 96 => 192, 112 => 224, 128 => 256, 144 => 288, 160 => 320, 176 => 352, 192 => 384, 208 => 416, 224 => 448, 240 => false),
2 => array( 0 => 0, 16 => 32, 32 => 48, 48 => 56, 64 => 64, 80 => 80, 96 => 96, 112 => 112, 128 => 128, 144 => 160, 160 => 192, 176 => 224, 192 => 256, 208 => 320, 224 => 384, 240 => false),
3 => array( 0 => 0, 16 => 32, 32 => 40, 48 => 48, 64 => 56, 80 => 64, 96 => 80, 112 => 96, 128 => 112, 144 => 128, 160 => 160, 176 => 192, 192 => 224, 208 => 256, 224 => 320, 240 => false)
),
2 => array(
1 => array( 0 => 0, 16 => 32, 32 => 48, 48 => 56, 64 => 64, 80 => 80, 96 => 96, 112 => 112, 128 => 128, 144 => 144, 160 => 160, 176 => 176, 192 => 192, 208 => 224, 224 => 256, 240 => false),
2 => array( 0 => 0, 16 => 8, 32 => 16, 48 => 24, 64 => 32, 80 => 40, 96 => 48, 112 => 56, 128 => 64, 144 => 80, 160 => 96, 176 => 112, 192 => 128, 208 => 144, 224 => 160, 240 => false),
3 => array( 0 => 0, 16 => 8, 32 => 16, 48 => 24, 64 => 32, 80 => 40, 96 => 48, 112 => 56, 128 => 64, 144 => 80, 160 => 96, 176 => 112, 192 => 128, 208 => 144, 224 => 160, 240 => false)
)
);
var $info_versions = array(0 => "reserved", 1 => "MPEG Version 1", 2 => "MPEG Version 2", 2.5 => "MPEG Version 2.5");
var $info_layers = array("reserved", "Layer I", "Layer II", "Layer III");
var $info_sampling_rates = array(
0 => array(0 => false, 4 => false, 8 => false, 12 => false),
1 => array(0 => "44100 Hz", 4 => "48000 Hz", 8 => "32000 Hz", 12 => false),
2 => array(0 => "22050 Hz", 4 => "24000 Hz", 8 => "16000 Hz", 12 => false),
2.5 => array(0 => "11025 Hz", 4 => "12000 Hz", 8 => "8000 Hz", 12 => false)
);
var $info_channel_modes = array(0 => "stereo", 64 => "joint stereo", 128 => "dual channel", 192 => "single channel");
var $file = "";
var $fh = false;
var $error = false;
var $id3_parsed = false;
var $id3 = array(
/* "tag" => "",
"title" => "unknown",
"author" => "unknown",
"album" => "unknown",
"year" => "unknown",
"comment" => "unknown",
"genre_id" => 0,
"genre" => "unknown"
*/ );
var $url = "";
var $info = array();
function mp3($file, $exitonerror=true) {
if (file_exists($file)) {
$this->file = $file;
$this->fh = fopen($this->file,"r");
global $HTTP_HOST, $PHP_SELF;
$this->url = "http://$HTTP_HOST/$PHP_SELF";
} else {
$this->error = "No such file";
if ($exitonerror) $this->exitonerror();
}
}
function exitonerror() {
echo($this->error);
exit;
}
function set_id3($title = "", $author = "", $album = "", $year = "", $comment = "", $genre_id = 0) {
$this->error = false;
$this->wfh = fopen($this->file,"a");
fseek($this->wfh, -128, SEEK_END);
fwrite($this->wfh, pack("a3a30a30a30a4a30C1", "TAG", $title, $author, $album, $year, $comment, $genre_id), 128);
fclose($this->wfh);
}
function get_id3() {
$this->id3_parsed = true;
fseek($this->fh, -128, SEEK_END);
$line = fread($this->fh, 10000);
if (preg_match("/^TAG/", $line)) {
$this->id3 = unpack("a3tag/a30title/a30author/a30album/a4year/a30comment/C1genre_id", $line);
$this->id3["genre"] = $this->id3_genres_array[$this->id3["genre_id"]];
return(true);
} else {
$this->error = "no idv3 tag found";
return(false);
}
}
// get_info() helper methods
function calculate_length($id3v2_tagsize = 0) {
$length = floor(($this->info["filesize"] - $id3v2_tagsize) / $this->info["bitrate"] * 0.008);
$min = floor($length / 60);
$min = strlen($min) == 1 ? "0$min" : $min;
$sec = $length % 60;
$sec = strlen($sec) == 1 ? "0$sec" : $sec;
return("$min:$sec");
}
function get_info() {
// $this->get_id3v2header();
$second = $this->synchronize();
// echo("2nd byte = $second " . decbin($second) . "
");
$third = ord(fread($this->fh, 1));
$fourth = ord(fread($this->fh, 1));
$this->info["version_id"] = ($second & 16) > 0 ? ( ($second & 8) > 0 ? 1 : 2 ) : ( ($second & 8) > 0 ? 0 : 2.5 );
$this->info["version"] = $this->info_versions[ $this->info["version_id"] ];
$this->info["layer_id"] = ($second & 4) > 0 ? ( ($second & 2) > 0 ? 1 : 2 ) : ( ($second & 2) > 0 ? 3 : 0 ); ;
$this->info["layer"] = $this->info_layers[ $this->info["layer_id"] ];
$this->info["protection"] = ($second & 1) > 0 ? "no CRC" : "CRC";
$this->info["bitrate"] = $this->info_bitrates[ $this->info["version_id"] ][ $this->info["layer_id"] ][ ($third & 240) ];
$this->info["sampling_rate"] = $this->info_sampling_rates[ $this->info["version_id"] ][ ($third & 12)];
$this->info["padding"] = ($third & 2) > 0 ? "on" : "off";
$this->info["private"] = ($third & 1) > 0 ? "on" : "off";
$this->info["channel_mode"] = $this->info_channel_modes[$fourth & 192];
$this->info["copyright"] = ($fourth & 8) > 0 ? "on" : "off";
$this->info["original"] = ($fourth & 4) > 0 ? "on" : "off";
$this->info["filesize"] = filesize($this->file);
$this->info["length"] = $this->calculate_length();
}
function synchronize() {
$finished = false;
rewind($this->fh);
while (!$finished) {
$skip = ord(fread($this->fh, 1));
// echo("inside synchronize() skip = $skip " . decbin($skip) . "
");
while ($skip != 255 && !feof($this->fh)) {
$skip = ord(fread($this->fh, 1));
// echo("inside synchronize() skip = $skip " . decbin($skip) . "
");
}
if (feof($this->fh)) {
$this->error("no info header found");
if ($exitonerror) $this->exitonerror();
}
$store = ord(fread($this->fh, 1));
// echo("inside synchronize() store = $store " . decbin($store) . "
");
if ($store >= 225) {
$finished = true;
} else if (feof($this->fh)) {
$this->error("no info header found");
if ($exitonerror) $this->exitonerror();
}
}
return($store);
}
function get_id3v2header() {
$bytes = fread($this->fh, 3);
if ($bytes != "ID3") {
echo("no ID3 tag");
return(false);
}
// get major and minor versions
$major = fread($this->fh, 1);
$minor = fread($this->fh, 1);
echo("ID3v$major.$minor");
}
function stream() {
if (!$this->id3_parsed) {
$this->get_id3();
$this->get_info();
}
header("ICY 200 OKrn");
header("icy-notice1:This stream requires a shoutcast/icecast compatible player.
rn");
header("icy-notice2:php MP3 class
rn");
header("icy-name:" . (count($this->id3) > 0 ? $this->id3["title"] . " - " . $this->id3["author"] . " - " . $this->id3["album"] . " - " . $this->id3["year"] : $this->file) . "rn");
header("icy-genre:" . (count($this->id3) > 0 ? $this->id3["genre"] : "unspecified") . "rn");
header("icy-url:bbbrn");
header("icy-pub:1rn");
header("icy-br:" . $this->info["bitrate"] . "rn");
rewind($this->fh);
fpassthru($this->fh);
}
function send_playlist_header($numentries = 1) {
header("Content-Type: audio/mpegurl;");
echo("[playlist]rnrn");
echo("NumberOfEntries=$numentriesrn");
}
function send_pls($server,$script) {
$this->send_playlist_header();
$path = "/";
$path_array = explode("/", dirname($this->file));
while(list($key,$val) = each($path_array)) {
$path .= empty($val) ? "" : rawurlencode($val);
}
$path .= "/";
// $file = rawurlencode(preg_replace("/.mp3$/", "", basename($this->file)));
$file = rawurlencode(basename($this->file));
echo("File1=http://$server/$script.mps?file=$path$filern");
}
function close() {
@fclose($this->fh);
}
}
?>
Usage Example
// quick start:
$server = "sun.icenet.it/~ludo";
$script = "stream";
include("mp3.php");
$mp3 = new MP3("Alpha Blondy - A1 - Jerusalem.mp3");
$mp3->get_id3();
$mp3->get_info();
preg_match("/.(.*)$/", $PHP_SELF, $ext);
$ext = $ext[1];
switch($ext) {
case "pls":
$mp3->send_pls($server,$script);
break;
case "mps":
$mp3->stream();
break;
default:
echo("click here to stream file");
}
 Профессиональная раскрутка сайта, заработок для веб-мастеров
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