forked from: Music Spectrum Circles
forked from Music Spectrum Circles (diff: 1)
ActionScript3 source code
/**
* Copyright yangliu9812 ( http://wonderfl.net/user/yangliu9812 )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/gYsI
*/
// forked from wonderwhyer's Music Spectrum Circles
package {
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.text.TextFieldAutoSize;
import flash.text.TextFormat;
import flash.text.TextField;
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.display.Sprite;
import flash.events.Event;
import flash.events.EventDispatcher;
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.net.FileFilter;
import flash.net.FileReference;
import flash.utils.ByteArray;
import flash.events.MouseEvent;
import net.hires.debug.Stats;
/**
* MP3 Loading based on this code:
* http://code.google.com/p/makc/source/browse/trunk/flash/fp10_fft/ClientMP3Loader.as
*/
[SWF(width=465,height=465,backgroundColor=0x000000, frameRate = 30)]
public class MusicalCircles extends Sprite {
public var fr:FileReference;
public var soundSource:Sound;
public var currentSong:SoundChannel;
public var visualizer:Visualizer;
public function MusicalCircles() {
stage.addEventListener(MouseEvent.MOUSE_UP,up);
addEventListener(Event.ENTER_FRAME,update);
var txt:TextField = new TextField();
txt.defaultTextFormat = new TextFormat(null,12,0xffffff);
txt.autoSize = TextFieldAutoSize.LEFT;
txt.selectable=false;
txt.text = "Click anywhere to select an mp3 file";
addChild(txt);
txt.x = 120;
addChild(new Bitmap(new BitmapData(450,450,false,0)));
visualizer = new Visualizer();
addChild(visualizer);
addChild(new Stats());
}
public function update(e:Event):void {
if(currentSong)
visualizer.update();
}
public function up(e:Event):void {
fr = new FileReference();
fr.addEventListener(Event.SELECT, onFileSelected);
fr.addEventListener(Event.COMPLETE, parse);
var mp3Filter:FileFilter = new FileFilter("mp3","*.mp3");
fr.browse([mp3Filter]);
if (currentSong)
{
currentSong.stop();
currentSong = null;
}
}
public function onFileSelected(e:Event):void
{
fr.load();
}
public function parse(e:Event):void
{
var swf:ByteArray = createSWFFromMP3(fr.data);
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.INIT, SoundLoaded);
loader.loadBytes(swf);
}
public function SoundLoaded(e:Event):void
{
var SoundClass:Class = LoaderInfo(e.currentTarget).applicationDomain.getDefinition("MP3Wrapper_soundClass") as Class;
soundSource = new SoundClass() as Sound;
currentSong = soundSource.play();
currentSong.addEventListener(Event.COMPLETE,songEnded);
}
public function songEnded(e:Event):void
{
currentSong = null;
}
public 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();
}
}
import flash.utils.ByteArray;
import flash.display.Sprite;
import flash.media.SoundMixer;
class Visualizer extends Sprite{
private var spectrum:ByteArray;
private var circles:Vector.<Sprite>;
public function Visualizer()
{
spectrum = new ByteArray();
circles = new Vector.<Sprite>();
for(var i:uint=1;i<65;i++) {
var circle:Sprite = new Sprite();
circle.graphics.lineStyle(2,0xFFFFFF);
circle.graphics.drawCircle(225,225,i*2);
circle.cacheAsBitmap = true;
circles.push(circle);
circle.alpha=0;
addChild(circle);
}
}
public function update():void {
SoundMixer.computeSpectrum(spectrum,true);
var spVal:Number;
for(var i:uint=0;i<64;i++)
{
spVal = spectrum.readFloat()+spectrum.readFloat()+spectrum.readFloat()+spectrum.readFloat();
circles[i].alpha = spVal;
}
}
}