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ASP 中的 在asp文件中访问flash详细信息

出处:互联网   整理: 软晨网（RuanChen.com）   发布: 2009-11-03   浏览: 227 ::
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<%

Class SWFDump

Private header
Private RECTdata
Private nBits
Private mversion
Private mfilelen
Private mxMin
Private mxMax
Private myMin
Private myMax
Private mheigt
Private mwidth
Private mframerate
Private mframecount

Private Sub Class_Initialize()

End Sub

Private Sub Class_Terminate()

End Sub


Private Function ReadHeader (filename)
Const ForReading = 1, ForWriting = 2, ForAppending = 8
Dim fso, f
Set fso = CreateObject("Scripting.FileSystemObject")
Set f = fso.OpenTextFile(filename, ForReading)
ReadHeader = f.Read(21)
End Function

Private Function ToBin(inNumber, OutLenStr )
Dim binary
binary = ""
do while inNumber >= 1
binary = binary & inNumber mod 2
inNumber = inNumber \ 2
loop
binary = binary & String(OutLenStr - len(binary), "0")
ToBin = StrReverse(binary)
End Function

Private Function Bin2Decimal(inBin)
Dim counter
Dim temp
Dim Value
inBin = StrReverse(inBin)
temp = 0
For counter = 1 to Len(inBin)
If counter = 1 then
Value = 1
Else
Value = Value * 2
End If
temp = temp + mid(inBin, counter ,1) * Value
Next
Bin2Decimal = temp
End Function

Public Function SWFDump(fileName)

header = ReadHeader (fileName)
mversion = asc(mid(header,4,1))
mfilelen = asc(mid(header,5,1))
mfilelen = mfilelen + asc(mid(header,6,1)) * 256
mfilelen = mfilelen + asc(mid(header,7,1)) * 256 * 256
mfilelen = mfilelen + asc(mid(header,8,1)) * 256 * 256 * 256

RECTdata = ToBin(asc(mid(header,9,1)),8)
RECTdata = RECTdata & ToBin(asc(mid(header,10,1)),8)
RECTdata = RECTdata & ToBin(asc(mid(header,11,1)),8)
RECTdata = RECTdata & ToBin(asc(mid(header,12,1)),8)
RECTdata = RECTdata & ToBin(asc(mid(header,13,1)),8)
RECTdata = RECTdata & ToBin(asc(mid(header,14,1)),8)
RECTdata = RECTdata & ToBin(asc(mid(header,15,1)),8)
RECTdata = RECTdata & ToBin(asc(mid(header,16,1)),8)
RECTdata = RECTdata & ToBin(asc(mid(header,17,1)),8)

nBits = Mid(RECTdata,1,5)
nBits = Bin2Decimal(nBits)

mxMin = Bin2Decimal(Mid(RECTdata,6,nBits))
mxMax = Bin2Decimal(Mid(RECTdata,6 + nBits * 1 ,nBits))
myMin = Bin2Decimal(Mid(RECTdata,6 + nBits * 2 ,nBits))
myMax = Bin2Decimal(Mid(RECTdata,6 + nBits * 3 ,nBits))

mheigt = (myMax - myMin) / 20
mwidth = (mxMax - mxMin) / 20

mframerate = asc(mid(header,18,1))

mframecount = asc(mid(header,19,1))
mframecount = mframecount + asc(mid(header,20,1)) * 256

End Function


Public Property Get Heigt()
Heigt = mheigt
End Property

Public Property Get Width()
Width = mwidth
End Property

Public Property Get Version()
Version = mversion
End Property

Public Property Get FileLen()
FileLen = mfilelen
End Property

Public Property Get xMin()
xMin = mxMin
End Property

Public Property Get xMax()
xMax = mxMax
End Property

Public Property Get yMin()
yMin = myMin
End Property

Public Property Get yMax()
yMax = myMax
End Property

Public Property Get Framerate()
Framerate = mframerate
End Property

Public Property Get Framecount()
Framecount = mframecount
End Property
End Class
%>

做成包含文件swfheaderdump.inc
调用：

<!-- #include file="swfheaderdump.inc" -->
<%
' Pass the SWF name in querystring this way
' swfdump.asp?swf=yourmovie.swf

set myObj = new swfdump
myObj.SWFDump (Server.MapPath(request("swf")))

Response.Write "Heigt (pixel) = " & myObj.Heigt & "<br>"
Response.Write "Width (pixel) = " & myObj.Width & "<br>"
Response.Write "Version = " & myObj.Version & "<br>"
Response.Write "FileLen (bytes) = " & myObj.FileLen & "<br>"
Response.Write "xMin (twips) = " & myObj.xMin & "<br>"
Response.Write "xMax (twips) = " & myObj.xMax & "<br>"
Response.Wri