Flash / Flex / ActionScript/Development/MP3

Calculating Spectrum Data

   <source lang="java">

package {

   import flash.utils.ByteArray;
   import flash.events.*;
   import flash.net.*;
   import flash.display.*;
   import flash.media.*;
   import flash.geom.*;
   public class Main extends Sprite {
       private const SPECTRUM_WIDTH:int = 256;
       private const BMP_HEIGHT:int = 200;
       private const BMP_WIDTH:int = 256;
       private var sound:Sound = new Sound(new URLRequest("http://www.wbex.ru/y.mp3"));
       private var soundData:ByteArray;
       private var bitmapData:BitmapData;
       private var bitmapDisplay:Bitmap;
       public function Main () {
           sound.play();
           bitmapData = new BitmapData(BMP_WIDTH, BMP_HEIGHT, true, 0x00000000);
           bitmapDisplay = new Bitmap(bitmapData);
           addChild(bitmapDisplay);
           this.addEventListener(Event.ENTER_FRAME, onEnterFrame);
       }
       public function onEnterFrame (event:Event):void {
           soundData = new ByteArray();
           SoundMixer.ruputeSpectrum(soundData);
           bitmapData.fillRect(bitmapData.rect, 0xFF000000);
           for (var i:int=0; i < SPECTRUM_WIDTH; i++) {
               var amplitude:Number = soundData.readFloat();
               var ampHeight:Number = BMP_HEIGHT/2 * (amplitude + 1);
               var rect:Rectangle = new Rectangle(i, BMP_HEIGHT -ampHeight, 1, ampHeight);
               bitmapData.fillRect(rect, 0xffffffff);
           }
       }
   }

}

       </source>
   
  

Find Out When a Sound Finishes Playing

   <source lang="java">

package {

   import flash.display.Sprite;
   import flash.media.Sound;
   import flash.net.URLRequest;
   import flash.events.Event;
   import flash.media.SoundChannel;
   
   public class Main extends Sprite {
       private var _sound:Sound;
       private var _channel:SoundChannel;
       private var _playList:Array;      // the list of songs
       private var _index:int = 0;       // the current song
       public function Main() {
           _playList = ["song1.mp3", 
                       "song2.mp3",
                       "song3.mp3"];
           playNextSong(  );
       }
       
       private function playNextSong(  ):void
       {
           if(_index < _playList.length) {
               _sound = new Sound(  );
               _sound.load(new URLRequest(_playList[_index]));
               _channel = _sound.play(  );
               _channel.addEventListener(Event.SOUND_COMPLETE,onComplete);
               _index++;
           }
       }
       
       public function onComplete(event:Event):void
       {
           playNextSong(  );
       }
   }    

}

       </source>
   
  

ID3 Reader

   <source lang="java">

package {

   import flash.display.Sprite;
   import flash.media.Sound;
   import flash.net.URLRequest;
   import flash.events.Event;
   import flash.text.TextField;
   
   public class Main extends Sprite {
       private var _sound:Sound;
       
       public function Main(  ) {
           _sound = new Sound(new URLRequest("song.mp3"));
           _sound.addEventListener(Event.ID3, onID3);
           _sound.play(  );
       }
       
       public function onID3(event:Event):void {
           var id3Display:TextField = new TextField(  );
           addChild(id3Display);
           id3Display.x = 10;
           id3Display.y = 20;
           id3Display.width = 200;
           id3Display.height = 200;
           id3Display.background = true;
           id3Display.multiline = true;
           id3Display.wordWrap = true;
           id3Display.text += _sound.id3.songName + "\n";
           id3Display.text += _sound.id3.artist + "\n";
           id3Display.text += _sound.id3.album + "\n";
           id3Display.text += _sound.id3.year + "\n";           
       }
   }

}

       </source>
   
  

Load mp3 file from a URL

   <source lang="java">

package{

 import flash.display.Sprite;
   import flash.media.*;
   import flash.events.*;
   import flash.net.*;
   import flash.text.*;
 public class Main extends Sprite{
   public function Main(){
       var song:Sound = new Sound(new URLRequest("http://server.ru/robotPicksFlowers.mp3"));
       song.play();
   }
 }

}

       </source>
   
  

Load mp3 sound file

   <source lang="java">

package{

 import flash.display.Sprite;
   import flash.media.*;
   import flash.events.*;
   import flash.net.*;
   import flash.text.*;
 public class Main extends Sprite{
   public function Main(){
       var sound:Sound = new Sound(new URLRequest("sound.mp3"));
       sound.play();
   }
 }

}

       </source>
   
  

Reading the Level of a Sound

   <source lang="java">

package {

   import flash.display.Sprite;
   import flash.media.Sound;
   import flash.media.SoundChannel;
   import flash.net.URLRequest;
   import flash.events.Event;
   
   public class Main extends Sprite {
       private var _sound:Sound;
       private var _channel:SoundChannel;
       
       public function Main(  ) {
           addEventListener(Event.ENTER_FRAME, onEnterFrame);
           _sound = new Sound(new URLRequest("song.mp3"));
           _channel = _sound.play(  );
       }
       
       public function onEnterFrame(event:Event):void
       {
           var leftLevel:Number = _channel.leftPeak * 100;
           var rightLevel:Number = _channel.rightPeak * 100;
           trace(leftLevel);
           trace(rightLevel);
           
       }       
   }

}

       </source>
   
  

Tracking the Progress of a Playing Sound

   <source lang="java">

package {

   import flash.display.Sprite;
   import flash.media.Sound;
   import flash.media.SoundChannel;
   import flash.net.URLRequest;
   import flash.events.Event;
   public class ProgressBar2 extends Sprite {
       private var _sound:Sound;
       private var _channel:SoundChannel;
       
       public function ProgressBar2(  ) {
           addEventListener(Event.ENTER_FRAME, onEnterFrame);
           _sound = new Sound(new URLRequest("song.mp3"));
           _channel = _sound.play(  );
       }
       
       public function onEnterFrame(event:Event):void
       {
          
           var loaded:int = _sound.bytesLoaded;
           var total:int = _sound.bytesTotal;
           
           var length:int = _sound.length;
           var position:int = _channel.position;
           
           if(total > 0) {
              trace(loaded);
              trace(length);
              trace(position);
           }
       }
   }    

}

       </source>