flash on 2015-4-18

L : Load
Enter / Space : Play
P : Pause

by 127.0.0.1 18 Apr 2015

Embed

/**
 * Copyright 127.0.0.1 ( http://wonderfl.net/user/127.0.0.1 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/y1le
 */

package {
    import flash.display.Sprite;
    
    public class FlashTest extends Sprite {
        import flash.display.BitmapData;
        import flash.display.Bitmap;
        import flash.utils.ByteArray;
        import flash.media.Sound;
        import flash.media.SoundChannel;
        import flash.net.FileReference;
        import flash.events.KeyboardEvent;
        import flash.events.Event;
        import flash.net.FileFilter;
        import flash.media.SoundMixer;
        import flash.geom.ColorTransform;
        import flash.geom.Rectangle;
        
        private const bmpdat:BitmapData = new BitmapData(465,465,false,0x000000);
        private const bmp:Bitmap = new Bitmap(bmpdat);
        private const color:ColorTransform = new ColorTransform(1,1,1,0.99,0,0,0,0);
        private const rect:Rectangle = new Rectangle(0,0,465,465);

        private const bytedat:ByteArray = new ByteArray();
        private const vectordat:Vector.<int> = new Vector.<int>(512);
        private const vectordat_x:Vector.<int> = new Vector.<int>(512);
        private const vectordat_y:Vector.<int> = new Vector.<int>(512);
        private var i:int;

        private const file:FileReference = new FileReference();
        private const filter0:FileFilter = new FileFilter("MP3(*.mp3)","*.mp3");
        private const filter1:FileFilter = new FileFilter("All(*.*)","*.*");
        private var loaded:Boolean;
        
        private var position:int;
        private var sound:Sound = new Sound();
        private var soundch:SoundChannel = new SoundChannel();
        
        public function FlashTest() {
            addChild(bmp);
            
            stage.addEventListener(KeyboardEvent.KEY_DOWN,key_down);
            stage.addEventListener(Event.ENTER_FRAME,enter_frame);
            soundch.addEventListener(Event.SOUND_COMPLETE,sound_complete);
        }
        
        private function key_down(e:KeyboardEvent):void {
            switch (e.keyCode) {
                case 76 :
                    // L : Load
                    file.browse([filter0,filter1]);
                    file.addEventListener(Event.SELECT,file_load);
                    break;
                case 13 :
                case 32 :
                    // ENTER, SPACE : Play
                    soundch.stop();
                    soundch = sound.play(position);
                    break;
                case 80 :
                    // P : Pause
                    soundch.stop();
                    position = soundch.position;
                    break;
            }
        }
        
        private function file_load(e:Event):void {
            file.load();
            file.addEventListener(Event.COMPLETE,file_load_complete);
        }

        private function file_load_complete(e:Event):void {
            loaded = true;
            position = 0;
            sound = new Sound();
            sound.loadCompressedDataFromByteArray(file.data,file.data.length);
            soundch.stop();
            soundch = sound.play();
        }
        private function enter_frame(e:Event):void {
            if (loaded) {
                bmpdat.lock();
                bmpdat.colorTransform(rect,color);
                
                position = soundch.position;
                
                SoundMixer.computeSpectrum(bytedat);
                
                for (i = 0; i < 512; i = i + 1) {
                    vectordat[i] = bytedat.readFloat() * 256;
                    vectordat_x[i] = vectordat[i] * Math.sin(i * Math.PI / 256);
                    vectordat_y[i] = vectordat[i] * Math.cos(i * Math.PI / 256);
                    bmpdat.setPixel32(232 + vectordat_x[i],232 + vectordat_y[i],0xFFFFFF);
                }
        
                bmpdat.unlock();
            }
        }
        private function sound_complete(e:Event):void {
            position = 0;
        }
    }

}