提取艺术家&的PHP脚本Shoutcast/Icecast流中的标题 [英] PHP script to extract artist & title from Shoutcast/Icecast stream
问题描述
我找到了可以提取艺术家&的脚本. Icecast或Shoutcast流中的标题名称. 我希望脚本在歌曲改变时自动更新，此刻仅在执行时才起作用.我是PHP的新手，所以将不胜感激. 谢谢！
I found a script which can extract the artist & title name from an Icecast or Shoutcast stream. I want the script to update automatically when a song changed, at the moment its working only when i execute it. I'm new to PHP so any help will be appreciated. Thanks!
define('CRLF', "\r\n");
class streaminfo{
public $valid = false;
public $useragent = 'Winamp 2.81';
protected $headers = array();
protected $metadata = array();
public function __construct($location){
$errno = $errstr = '';
$t = parse_url($location);
$sock = fsockopen($t['host'], $t['port'], $errno, $errstr, 5);
$path = isset($t['path'])?$t['path']:'/';
if ($sock){
$request = 'GET '.$path.' HTTP/1.0' . CRLF .
'Host: ' . $t['host'] . CRLF .
'Connection: Close' . CRLF .
'User-Agent: ' . $this->useragent . CRLF .
'Accept: */*' . CRLF .
'icy-metadata: 1'.CRLF.
'icy-prebuffer: 65536'.CRLF.
(isset($t['user'])?'Authorization: Basic '.base64_encode($t['user'].':'.$t['pass']).CRLF:'').
'X-TipOfTheDay: Winamp "Classic" rulez all of them.' . CRLF . CRLF;
if (fwrite($sock, $request)){
$theaders = $line = '';
while (!feof($sock)){
$line = fgets($sock, 4096);
if('' == trim($line)){
break;
}
$theaders .= $line;
}
$theaders = explode(CRLF, $theaders);
foreach ($theaders as $header){
$t = explode(':', $header);
if (isset($t[0]) && trim($t[0]) != ''){
$name = preg_replace('/[^a-z][^a-z0-9]*/i','', strtolower(trim($t[0])));
array_shift($t);
$value = trim(implode(':', $t));
if ($value != ''){
if (is_numeric($value)){
$this->headers[$name] = (int)$value;
}else{
$this->headers[$name] = $value;
}
}
}
}
if (!isset($this->headers['icymetaint'])){
$data = ''; $metainterval = 512;
while(!feof($sock)){
$data .= fgetc($sock);
if (strlen($data) >= $metainterval) break;
}
$this->print_data($data);
$matches = array();
preg_match_all('/([\x00-\xff]{2})\x0\x0([a-z]+)=/i', $data, $matches, PREG_OFFSET_CAPTURE);
preg_match_all('/([a-z]+)=([a-z0-9\(\)\[\]., ]+)/i', $data, $matches, PREG_SPLIT_NO_EMPTY);
echo '<pre>';var_dump($matches);echo '</pre>';
$title = $artist = '';
foreach ($matches[0] as $nr => $values){
$offset = $values[1];
$length = ord($values[0]{0}) +
(ord($values[0]{1}) * 256)+
(ord($values[0]{2}) * 256*256)+
(ord($values[0]{3}) * 256*256*256);
$info = substr($data, $offset + 4, $length);
$seperator = strpos($info, '=');
$this->metadata[substr($info, 0, $seperator)] = substr($info, $seperator + 1);
if (substr($info, 0, $seperator) == 'title') $title = substr($info, $seperator + 1);
if (substr($info, 0, $seperator) == 'artist') $artist = substr($info, $seperator + 1);
}
$this->metadata['streamtitle'] = $artist . ' - ' . $title;
}else{
$metainterval = $this->headers['icymetaint'];
$intervals = 0;
$metadata = '';
while(1){
$data = '';
while(!feof($sock)){
$data .= fgetc($sock);
if (strlen($data) >= $metainterval) break;
}
//$this->print_data($data);
$len = join(unpack('c', fgetc($sock))) * 16;
if ($len > 0){
$metadata = str_replace("\0", '', fread($sock, $len));
break;
}else{
$intervals++;
if ($intervals > 100) break;
}
}
$metarr = explode(';', $metadata);
foreach ($metarr as $meta){
$t = explode('=', $meta);
if (isset($t[0]) && trim($t[0]) != ''){
$name = preg_replace('/[^a-z][^a-z0-9]*/i','', strtolower(trim($t[0])));
array_shift($t);
$value = trim(implode('=', $t));
if (substr($value, 0, 1) == '"' || substr($value, 0, 1) == "'"){
$value = substr($value, 1);
}
if (substr($value, -1) == '"' || substr($value, -1) == "'"){
$value = substr($value, 0, -1);
}
if ($value != ''){
$this->metadata[$name] = $value;
}
}
}
}
fclose($sock);
$this->valid = true;
}else echo 'unable to write.';
}else echo 'no socket '.$errno.' - '.$errstr.'.';
}
public function print_data($data){
$data = str_split($data);
$c = 0;
$string = '';
echo "<pre>\n000000 ";
foreach ($data as $char){
$string .= addcslashes($char, "\n\r\0\t");
$hex = dechex(join(unpack('C', $char)));
if ($c % 4 == 0) echo ' ';
if ($c % (4*4) == 0 && $c != 0){
foreach (str_split($string) as $s){
//echo " $string\n";
if (ord($s) < 32 || ord($s) > 126){
echo '\\'.ord($s);
}else{
echo $s;
}
}
echo "\n";
$string = '';
echo str_pad($c, 6, '0', STR_PAD_LEFT).' ';
}
if (strlen($hex) < 1) $hex = '00';
if (strlen($hex) < 2) $hex = '0'.$hex;
echo $hex.' ';
$c++;
}
echo " $string\n</pre>";
}
public function __get($name){
if (isset($this->metadata[$name])){
return $this->metadata[$name];
}
if (isset($this->headers[$name])){
return $this->headers[$name];
}
return null;
}
}
$t = new streaminfo('http://64.236.34.196:80/stream/1014'); // get metadata
echo Meta Interval: $t->icymetaint;
echo Current Track: $t->streamtitle;
推荐答案
如果您想运行PHP脚本以使您的元数据保持最新(我假设您是在建立网站并在此处使用html音频标签) )，您可以将ontimeupdate事件与ajax函数一起使用.如果您不是，则可能应该查看音频播放文档中的类似内容.
If you want to run the PHP script to keep your meta data up to date (I'm assuming you're making a website and using html audio tags here) you can use the ontimeupdate event with an ajax function. If you're not you probably should look up your audio playback documentation for something similar.
<audio src="http://ip:port/;" ontimeupdate="loadXMLDoc()">
您可以在此处找到一个很好的示例 http://www.w3schools.com/php/php_ajax_php .asp
You can find a great example here http://www.w3schools.com/php/php_ajax_php.asp
您想在脚本的最后使用一个php变量一次使用PHP echo函数所有相关信息.
You want to use the PHP echo function all the relevant information at once using one php variable at the very end of your script.
<?php ....
$phpVar=$streamtitle;
$phpVar2=$streamsong;
$result="I want my string to look like this: <br> {$phpVar} {$phpVar2}";
echo $result;
?>
，然后使用.onreadystatechange调用的函数通过使用.resonseText(将包含与PHP脚本的回声相同的内容)来修改您想要在网站上显示的特定元素.
and then use the function called by the .onreadystatechange to modify the particular elements you want on your website by using the .resonseText (this will contain the same content as your PHP script's echo).
这篇关于提取艺术家&的PHP脚本Shoutcast/Icecast流中的标题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
