import flash.events.*;
import flash.external.*;
import flash.media.Sound;
import flash.net.URLRequest;

Security.allowDomain('*');

ExternalInterface.addCallback('proxySound', this.proxySound);

var sound:Sound = new Sound();
sound.addEventListener(ProgressEvent.PROGRESS, process);
sound.addEventListener(IOErrorEvent.IO_ERROR, error);

function proxySound(url:String):void {
  var urlReq:URLRequest = new URLRequest(url);
  sound.load(urlReq);
}
function process(event:Event) {
  var bytes:ByteArray = new ByteArray();
  while (sound.extract(bytes, 40960)) {
    bytes.position = 0;
    var samples:Array = new Array(bytes.length);
    for (var i:int = 0, n:int = bytes.length / 4; i < n; ++i)
      samples[i] = bytes.readFloat();
    ExternalInterface.call('samples', samples);
  }
}
function error(event:Event):void {
  ExternalInterface.call('error');
}