forked from: visualizer

/**
 * Copyright jokehn9 ( http://wonderfl.net/user/jokehn9 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/1yNa
 */

// forked from codeonwort's visualizer
package {
    import flash.text.TextField;
    import flash.display.Graphics;
    import flash.utils.ByteArray;
    import flash.media.SoundChannel;
    
    import flash.media.Sound;
    import flash.net.URLRequest
    import flash.media.SoundLoaderContext
    import flash.media.SoundChannel
    import flash.media.SoundMixer;
    import flash.display.Sprite
    import flash.events.Event
    
    public class FlashTest extends Sprite {
        private var s:Sound
        private var channel:SoundChannel;
        private const PLOT_HEIGHT:int = 200;
        private const CHANNEL_LENGTH:int = 226;
        private var bytes:ByteArray = new ByteArray()
        private var txt:TextField = new TextField();
        
        public function FlashTest() {
            // write as3 code here..
            stage.addEventListener("rightClick", function($:Event):void{})
            txt.text = "No";
            txt.x = 200;
            txt.y = 50;
            addChild(txt);
            s = new Sound(new URLRequest('http://clug.kr/~codeonwort/file_pool/old_elvengard.mp3'), new SoundLoaderContext(1000, true));
            s.addEventListener(Event.COMPLETE, comp)
            s.addEventListener(Event.SOUND_COMPLETE, onPbc);
            
            
        }
        
        private function comp(e:Event):void {
            channel = s.play();
            
            
            
            addEventListener("enterFrame", loop)
        }
        
        private function loop(e:Event):void {
            SoundMixer.computeSpectrum(bytes, false, 0);
            
            var g:Graphics = this.graphics;
            
            
            

            var n:Number = 0;
           
             g.clear();
             g.lineStyle(0, 0x6600cc);
             g.beginFill(0xffcc);
             g.moveTo(0,PLOT_HEIGHT);
             for(var i:int = 0; i<CHANNEL_LENGTH; i++) {
                 n = (bytes.readFloat() * PLOT_HEIGHT);
                 g.lineTo(i*2,PLOT_HEIGHT - n);
                 if(n>0.4 * PLOT_HEIGHT) {
                     txt.text = "Yes";
                 }

                
             }
             
             g.lineTo(CHANNEL_LENGTH * 2, PLOT_HEIGHT);
             g.endFill();
            
           
            
            /*
            g.lineStyle(0,0xcc0066);
            g.beginFill(0xcc0066, 0.5);
            g.moveTo(CHANNEL_LENGTH * 2, PLOT_HEIGHT);
            
            for(i = CHANNEL_LENGTH;i > 0 ; i--) {
                n = (bytes.readFloat() * PLOT_HEIGHT);
                g.lineTo(i*2,PLOT_HEIGHT - n);
            }
            g.lineTo(0,PLOT_HEIGHT);
            g.endFill();
            */


        }
        
        private function onPbc(event:Event):void
        {
            removeEventListener(Event.ENTER_FRAME, loop);
        }


    }
    

}
/*
class MP3Button {
        public static var channel:SoundChannel
}
*/