Capture image with webcam using flash and sending it to the server

Question

I have a need to use flash to capture an image and have that image uploaded to the server. I have seen some examples of code that uses flash to capture an image but it saves the file locally. We need that file to be sent to the server. We are using CF9.0 and I figure that once we are able to capture the image we could hand it off to ColdFusion to send to the server.
Has anyone done anything like that or know if it's possible?
Any help is apprecaited.
Thanks,
Mallory

Answer 1

It's not that hard...after you capture the image in Flash encode just send it via Remoting to a cfc as a bytearray or a bytearray encoded as Base64 string (and then decode it to binary in the CFC). I have had better luck with the latter way. You could also post the bytearray encoded as a Base64 string to a .cfm page as a form field.
For example in Action Script 3 you do something like this (assuming "frameBMD" is the BitmapData drawn from the video source):
var ba:ByteArray=com.adobe.images.PNGEncoder.encode(frameBMD);
var baAsString:String=com.dynamicflash.util.Base64.encodeByteArray(ba);
var saveImageResponder:Responder=new Responder(onSaveImageResult,onFault);
var rs=new NetConnection();
rs.objectEncoding=flash.net.ObjectEncoding.AMF3;
rs.connect("/flashservices/gateway");
rs.call("Headshot.saveImage",saveImageResponder,baAsString,1);
And your cfc would be something like this:
<cfcomponent displayName="Headshot" hint="Save a Headshot">
<cffunction name="saveImage" access="remote" output="false" returntype="string" roles="user">
  <cfargument name="data" type="string" required="true" />
  <cfargument name="user_id" type="numeric" required="no" default="1">
  <cfset SavePathParent = ExpandPath("/data/users")>
  <cfset SavePath = SavePathParent & "/user_" & arguments.user_id>
  <cfif NOT DirectoryExists(SavePath)>
    <cfdirectory action = "create" directory = "#SavePath#" mode="777">
  </cfif>
  <cfset theFilePath="#SavePath#/headshot_#arguments.user_id#.png">
<!--- Write the file --->
  <cffile action="write" file="#theFilePath#" output="#toBinary(arguments.data)#"/>
  <cfset LOCAL.file_url="/data/users/user_#arguments.user_id#">
  <cfreturn LOCAL.file_url/>
</cffunction>
</cfcomponent>
Anyway, that's the idea... hope that helps.