package  {
	import com.codeazur.as3swf.SWF;
	import com.codeazur.as3swf.SWFData;
	import com.codeazur.as3swf.data.SWFScene;
	import com.codeazur.as3swf.data.SWFSymbol;
	import com.codeazur.as3swf.data.consts.SoundCompression;
	import com.codeazur.as3swf.data.consts.SoundRate;
	import com.codeazur.as3swf.data.consts.SoundSize;
	import com.codeazur.as3swf.data.consts.SoundType;
	import com.codeazur.as3swf.tags.TagDefineSceneAndFrameLabelData;
	import com.codeazur.as3swf.tags.TagDefineSound;
	import com.codeazur.as3swf.tags.TagDoABC;
	import com.codeazur.as3swf.tags.TagEnd;
	import com.codeazur.as3swf.tags.TagFileAttributes;
	import com.codeazur.as3swf.tags.TagSetBackgroundColor;
	import com.codeazur.as3swf.tags.TagShowFrame;
	import com.codeazur.as3swf.tags.TagSymbolClass;
	import flash.display.Loader;
	import flash.display.LoaderInfo;
	import flash.events.Event;
	import flash.events.EventDispatcher;
	import flash.media.Sound;
	import flash.net.FileFilter;
	import flash.net.FileReference;
	import flash.utils.ByteArray;
	/**
	 * This loads MP3 from HDD.
	 * 
	 * @see http://wiki.github.com/claus/as3swf/play-mp3-directly-from-bytearray
	 * @see http://github.com/claus/as3swf/raw/master/bin/as3swf.swc
	 */
	public class ClientMP3Loader extends EventDispatcher {

		/**
		 * Use this object after Event.COMPLETE.
		 */
		public var sound:Sound;

		/**
		 * Call this to load MP3 from HDD.
		 */
		public function load ():void {
			file = new FileReference;
			file.addEventListener (Event.CANCEL, onUserCancelled);
			file.addEventListener (Event.SELECT, onFileSelected);
			file.addEventListener (Event.COMPLETE, onFileLoaded);
			file.browse ([ new FileFilter ("MP3 files", "*.mp3") ]);
		}

		private var file:FileReference;
		private function onUserCancelled (e:Event):void { dispatchEvent (new Event (Event.CANCEL)); }
		private function onFileSelected (e:Event):void { file.load (); }
		private function onFileLoaded (e:Event):void {
			// Wrap the MP3 with a SWF
			var swf:ByteArray = createSWFFromMP3 (file.data);
			// Load the SWF with Loader::loadBytes()
			var loader:Loader = new Loader();
			loader.contentLoaderInfo.addEventListener(Event.INIT, initHandler);
			loader.loadBytes(swf);
		}

		private function initHandler(e:Event):void {
			// Get the sound class definition
			var SoundClass:Class = LoaderInfo(e.currentTarget).applicationDomain.getDefinition("MP3Wrapper_soundClass") as Class;
			// Instantiate the sound class
			sound = new SoundClass() as Sound;
			// Report Event.COMPLETE
			dispatchEvent (new Event (Event.COMPLETE));
		}

		private function createSWFFromMP3(mp3:ByteArray):ByteArray
		{
			// Create an empty SWF
			// Defaults to v10, 550x400px, 50fps, one frame (works fine for us)
			var swf:SWF = new SWF();
			
			// Add FileAttributes tag
			// Defaults: as3 true, all other flags false (works fine for us)
			swf.tags.push(new TagFileAttributes());

			// Add SetBackgroundColor tag
			// Default: white background (works fine for us)
			swf.tags.push(new TagSetBackgroundColor());
			
			// Add DefineSceneAndFrameLabelData tag 
			// (with the only entry being "Scene 1" at offset 0)
			var defineSceneAndFrameLabelData:TagDefineSceneAndFrameLabelData = new TagDefineSceneAndFrameLabelData();
			defineSceneAndFrameLabelData.scenes.push(new SWFScene(0, "Scene 1"));
			swf.tags.push(defineSceneAndFrameLabelData);

			// Add DefineSound tag
			// The ID is 1, all other parameters are automatically
			// determined from the mp3 itself.
			swf.tags.push(TagDefineSound.createWithMP3(1, mp3));
			
			// Add DoABC tag
			// Contains the AS3 byte code for the document class and the 
			// class definition for the embedded sound
			swf.tags.push(TagDoABC.create(abc));
			
			// Add SymbolClass tag
			// Specifies the document class and binds the sound class
			// definition to the embedded sound
			var symbolClass:TagSymbolClass = new TagSymbolClass();
			symbolClass.symbols.push(SWFSymbol.create(1, "MP3Wrapper_soundClass"));
			symbolClass.symbols.push(SWFSymbol.create(0, "MP3Wrapper"));
			swf.tags.push(symbolClass);
			
			// Add ShowFrame tag
			swf.tags.push(new TagShowFrame());

			// Add End tag
			swf.tags.push(new TagEnd());
			
			// Publish the SWF
			var swfData:SWFData = new SWFData();
			swf.publish(swfData);
			
			return swfData;
		}
		
		private static var abcData:Array = [
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		];

		private static function abcDataToByteArray():ByteArray {
			var ba:ByteArray = new ByteArray();
			for (var i:uint = 0; i < abcData.length; i++) {
				ba.writeByte(abcData[i]);
			}
			return ba;
		}
		
		private static var abc:ByteArray = abcDataToByteArray();
	}
}