用ASP實現對MP3曲目信息的操作
2024-05-04 10:58:50
供稿：網友
先簡單說一下MP3的ID3 標記，因為主要是操作這個玩意
MP3最開始的時候沒有我們今天看到的那樣，有歌手、年代，專集等等信息
只有一些簡單的參數如yes/no來表示是不是privated或者copyrighted等信息，這樣對MP3的相關工作帶來了很多不便，1996年的時候有個老外提出來在每個MP3后面追加一段數據，用以存放上述的那些信息，后來就發展成為id3 v1 據我所知的現在已經到1.1了，具體的還是自己去查一下吧
還是老習慣，用metadata來引入DLL，我以前有文章貼過的，不知道的請自己去查
看代碼
<!--METADATA TYPE="typelib"
UUID="00000205-0000-0010-8000-00AA006D2EA4"
NAME="ADODB Type Library"
-->
<%
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 "<table><tr><td colspan=2><h3>" & _
"ID3 Tag info for:</td></tr><tr>" & _
"<td colspan=2>" & objFile.Name & "</td></tr>"
response.write "<tr><td><b>Artist: </b></td>" & _
"<td>" & strArtist & "</td></tr>"
response.write "<tr><td><b>Track: </b></td>" & _
"<td>" & strSongName & "</td></tr>"
response.write "<tr><td><b>Album: </b></td>" & _
<td>" & strAlbum & "</td></tr>"
response.write "<tr><td><b>Year: </b></td>" & _
