一个解析mp3 ID3 tag 和 MPEG 信息的类（来自zend.com），实际应用请看这里http://feifei2.bjedu.gov.cn...-会员卡,广州印刷,深圳印刷,印刷公司,名片,彩页,名片设计,设计教程,名片制作,彩色名片,名片模板,贵宾卡,pvc卡,设计欣赏,深圳名片,广州名片,business card design

首页	名片设计 CorelDRAW Illustrator AuotoCAD Painter 其他软件 Photoshop Fireworks Flash

» 彩色名片
» PVC卡
» 彩色磁性卡
» 彩页/画册
» 个性印务
» 彩色不干胶
» 明信片
   » 明信片
   » 彩色书签
   » 门挂
» 其他产品与服务
   » 创业锦囊
   » 办公用品
   » 信封、信纸
   » 便签纸、斜面纸砖
   » 无碳复印纸
   » 海报
   » 大篇幅印刷
   » KT板
   » 海报
   » 横幅

一个解析mp3 ID3 tag 和 MPEG 信息的类（来自zend.com），实际应用请看这里http://feifei2.bjedu.gov.cn...
<?php
 /*
 * MP3 class
 *
 * rel. 0.1
 *
 * Copyright (c) 2000 Sumatra Solutions srl http://www.sumatrasolutions.com
 * Ludovico Magnocavallo ludo@sumatrasolutions.com
 *
 * License type: GNU GPL http://www.gnu.org/copyleft/gpl.html
 *
 * Heavily inspired by
 * Perl Apache::MP3 module (L. Stein) -- great module to create an apache-based mp3 server
 * Perl MP3::Info (C. Nandor) -- very complicated, hard stuff but useful
 * Java class de.vdheide.mp3 (J. Vonderheide) -- great stuff, easy to read, had to debug synchronize() method
 *
 * ID3v2 tags support not completed
 *
 * MP3 header reference at http://www.mp3-tech.org/
 *
 * // quick start:
 * $mp3 = new MP3($myfilepath);
 * $mp3->get_info(); // file info in $mp3->info array
 * $mp3->get_id3(); // id3 info in $mp3->id3 array
 * $mp3->send_pls($HTTP_HOST) // uses physical path to file in playlist url
 * $mp3->stream() // streams file to browser
 *
 * $Id: mp3.php,v 1.10 2000/07/18 11:05:16 ludo Exp $
 *
 */
 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) {
 $this->get_id3();
 }
 header("ICY 200 OK/r/n");
 header("icy-notice1:This stream requires a shoutcast/icecast compatible player. /r/n");
 header("icy-notice2:php MP3 class /r/n");
 header("icy-name:" . (count($this->id3) > 0 ? $this->id3["title"] . " - " . $this->id3["author"] . " - " . $this->id3["album"] . " - " . $this->id3["year"] : $this->file) . "/r/n");
 header("icy-genre:" . (count($this->id3) > 0 ? $this->id3["genre"] : "unspecified") . "/r/n");
 header("icy-url:bbb/r/n");
 header("icy-pub:1/r/n");
 header("icy-br:320/r/n");
 rewind($this->fh);
 fpassthru($this->fh);
 }
 function send_playlist_header($numentries = 1) {
 header("Content-Type: audio/mpegurl;");
 echo("[playlist]/r/n/r/n");
 echo("NumberOfEntries=$numentries/r/n");
 }
 function send_pls($server) {
 $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($this->file)));
 echo("File1=http://$server$path$file.mps/r/n");
 }
 function close() {
 @fclose($this->fh);
 }
 }

?>

返回类别: 教程
上一教程: PHP4中实现动态代理
下一教程: 通过对php一些服务器端特性的配置加强php的安全

您可以阅读与"一个解析mp3 ID3 tag 和 MPEG 信息的类（来自zend.com），实际应用请看这里http://feifei2.bjedu.gov.cn..."相关的教程:
· PHP4实际应用经验篇(5)
· PHP4实际应用经验篇(7)
· PHP4实际应用经验篇(9)
· PHP4实际应用经验篇(4)
· PHP4实际应用经验篇(1)


	快精灵印艺坊版权所有	首页会员中心在线印刷在线编辑付款方式索取样品设计指南连锁门店网站地图关于我们友情链接