JS剖析MP3猎取歌曲信息ID3Reader

ID3 Reader 是一款能够在前台或许背景（nodejs）剖析MP3曲目信息（条件是含有这些信息）的东西

官方demo 源码下载 全英文文档

用法示例

1，基础用法

//In its simplest form:
ID3.loadTags("filename.mp3", function() {
var tags = ID3.getAllTags(filename);
alert(tags.artist + " - " + tags.title + ", " + tags.album);
});

2，特别用法

//by specifying specific tags:
ID3.loadTags("filename.mp3", function() {
var tags = ID3.getAllTags(filename);
alert(tags.COMM.data + " - " + tags.TCON.data + ", " + tags.WXXX.data);
},
{tags: ["COMM", "TCON", "WXXX"]});
//or even by specifying shortcuts instead of cryptic tags:
ID3.loadTags("filename.mp3", function() {
var tags = ID3.getAllTags(filename);
alert(tags.comment + " - " + tags.track + ", " + tags.lyrics);
},
{tags: ["comment", "track", "lyrics"]});

3，文档及API

ID3.loadTags(url, cb, [options])//文件途径，回调函数，参数数组
url - The URL of the mp3 file to read, this must reside on the same domain (document.domain).
//文件必须在同域名下
cb - The callback function to invoke when the tags are loaded.
//文件加载终了后实行
options - Optional parameters.
//参数数组
options.tags - The array of tags and/or shortcuts to read from the ID3 block. Default value is: ["title", "artist", "album", "track"]
options.dataReader - The function used to create the data reader out of a url. It receives (url, success: callback function that returns the data reader, fail: callback function to inform an error setting up the reader). By default it will be BufferedBinaryAjax.


ID3.getAllTags(url)
url - The URL of the mp3 file to read, this must be the same value given to ID3.loadTags().
return value - This function will return the following object structure, for IDv1:
{
version: "1.1",
title: string,
artist: string,
album: string,
year: string,
comment: string,
track: string,
genre: string
}
and for ID3v2:
{
version: "2..",
major: integer,
revision: integer,
flags: {
unsynchronisation: boolean,
extended_header: boolean,
experimental_indicator: boolean
},
size: integer,
*: {
id: integer,
size: integer,
description: string,
data:
},
*: pointer to .data
}

Currently supported frames:
APIC/PIC: Attached picture
COMM/COM: Comments
PCNT/CNT: Play counter
T*: Text frames
USLT/ULT: Unsychronized lyric/text transcription
Shortcuts:
title: TIT2/TT2
artist: TPE1/TP1
album: TALB/TAL
year: TYER/TYE
comment: COMM/COM
track: TRCK/TRK
genre: TCON/TCO
picture: APIC/PIC
lyrics: USLT/ULT

备注：留待再更新编辑