用ASP实现对MP3曲目信息的操作 -pc6资讯

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用ASP实现对MP3曲目信息的操作 时间：2004/11/7 2:54:00来源：本站整理作者：蓝点我要评论(0)

先简单说一下MP3的ID3 标记，因为主要是操作这个玩意

MP3最开始的时候没有我们今天看到的那样，有歌手、年代，专集等等信息

只有一些简单的参数如yes/no来表示是不是privated或者copyrighted等信息，这样对MP3的相关工作带来了很多不便，1996年的时候有个老外提出来在每个MP3后面追加一段数据，用以存放上述的那些信息，后来就发展成为id3 v1 据我所知的现在已经到1.1了，具体的还是自己去查一下吧

还是老习惯，用metadata来引入DLL，我以前有文章贴过的，不知道的请自己去查

看代码

<%

  Function ConvertBin(Binary)

  'This function converts a binary byte into an ASCII byte.

    for i = 1 to LenB(Binary)

      strChar = chr(AscB(MidB(Binary,i,1)))

      ConvertBin = ConvertBin & strChar

    Next

  End Function

  dim objStream

  dim strTag, strSongName, strArtist, strAlbum, strYear, _

      strComment, strGenre, strFile

  'Specify the folder to iterate through, displaying all the MP3s

  Const folder = "C:\mp3s\"

  'Grab the folder information

  Dim objFSO, objFolder, objFile

  Set objFSO = Server.CreateObject("Scripting.FileSYstemObject")

  Set objFolder = objFSO.GetFolder(folder)

  'Create the Stream object

  set objStream = Server.CreateObject("ADODB.Stream")

  objStream.Type = adTypeBinary

  'Loop through the files in the folder

  For Each objFile in objFolder.Files

    'Open the stream

    objStream.Open

    objStream.LoadFromFile objFile.Path

    'Read the last 128 bytes

    objStream.Position =  objStream.size - 128

    'Read the ID3 v1 tag info

    strTag = ConvertBin(objStream.Read(3))

    if ucase(strTag) = "TAG" then

      strSongName = ConvertBin(objStream.Read(30))

      strArtist = ConvertBin(objStream.Read(30))

      strAlbum = ConvertBin(objStream.Read(30))

      strYear = ConvertBin(objStream.Read(4))

      strComment = ConvertBin(objStream.Read(30))

    end if

    'Display the results

    response.write "" & _

                   ""

    response.write "" & _

                   ""

    response.write "" & _

                   ""

    response.write "" & _

                   "

    response.write "" & _

                   ""

    response.write ""

    response.write "

" & _ "ID3 Tag info for:
" & objFile.Name & "
Artist:	" & strArtist & "
Track:	" & strSongName & "
Album:	" & strAlbum & "
Year:	" & strYear & "
Comment: " & _ "	" & strComment & "