How do I decode an image in Actionscript encoded in vbscript using MSXML?

Posted on 2010-09-08
Medium Priority
Last Modified: 2013-11-11
I'm creating a Flash/Actionscript tool that displays data and an image on the screen. I have an ASP page that retrieves the data and sends it back to the Flash tool. I need to encode the image, using base64, in VBscript within the ASP page, then decode it in actionscript.

Currently I'm using MSXML to do the encoding in the asp page. I then wrap the encoded string in some XML, then use Server.URLEncode(XMLString) and write it out.

So, given this approach, what's the best way to decode the data into a byteArray for loading into an image on the stage? I'm currently trying to use, without success, com.dynamicflash.util, decodeToByteArray.

Is there a better way? The images could be fairly large. (They're photos people take using digital cameras so it's all over the map.)

'vbscript code in asp page

Function Base64Encode(inData)

  Dim dom: Set dom = CreateObject("MSXML2.DOMDocument.3.0")
   Dim elem: Set elem = dom.appendChild(dom.createElement("root"))
   elem.dataType = "bin.base64"
   elem.nodeTypedValue = inData
   Base64Encode = elem.Text
End Function

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//AS3 Code snippet:

	photoBA = Base64.decodeToByteArray(xml.BADGEREQUEST.PHOTO);


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Question by:BlueKarana
  • 2
LVL 39

Expert Comment

ID: 33634698
this looks like something for the likes of lee brimlow. have you tried checking his blog or posting something on his forum?

Author Comment

ID: 33636444
I'll try that. Thanks.

Accepted Solution

BlueKarana earned 0 total points
ID: 33643118
I finally figured out that MSXML conversion to base64 was inserting line feeds and + signs. It's obvious why the line feeds are bad news. The + signs are a problem because the dynamicFlash base64 decode expects a - (minus), not a plus.

Two replaces later and I'm good to go.

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