flash on 2012-11-29
MP3 Loading based on this code:
http://code.google.com/p/makc/source/browse/trunk/flash/fp10_fft/ClientMP3Loader.as
/**
* Copyright benji ( http://wonderfl.net/user/benji )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/mP6k
*/
// forked from wonderwhyer's Breaking signal by frequencies
package {
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;
/**
* 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";
txt.x = 120;
visualizer = new Visualizer();
addChild(visualizer);
addChild(txt);
}
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.display.Graphics;
import flash.geom.Rectangle;
import flash.filters.BlurFilter;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.geom.ColorTransform;
import flash.utils.ByteArray;
import flash.display.Sprite;
import flash.media.SoundMixer;
import org.si.utils.FFT;
class Visualizer extends Sprite{
private var wave:ByteArray;
private var xx:Number;
private var yy:Number;
private var direction:Number = 0;
private var color:Number = 0;
private var view:BitmapData;
private var bmp:Bitmap;
private var spr:Sprite;
public function Visualizer()
{
wave = new ByteArray();
view = new BitmapData(450,450,false,0);
bmp = new Bitmap(view);
addChild(bmp);
bmp.x=0;
bmp.y=0;
spr = new Sprite();
addChild(spr);
spr.y = 110;
spr.x = 20;
}
public function update():void {
SoundMixer.computeSpectrum(wave,false);
var inRe:Vector.<Number> = new Vector.<Number>();
for(var i:int=0;i<256;i++)
{
var waVal:Number = wave.readFloat();
inRe.push(waVal);
}
var fft:FFT = new FFT(256);
fft.setData(inRe);
var spec:FFT = fft.calcRealFFT();
var res:Vector.<Number> = spec.getData();
var g:Graphics = spr.graphics;
g.clear();
g.lineStyle(1,0xFFFFFF);
g.moveTo(100,300);
var m2:Number = 0;
var steps:uint = 4;
var part:uint = 256/steps;
var shift:uint = 450/(steps+1);
var pow:Number = -1.8;
var spVal:Number;
var graph:Array = [];
for(var j:uint=0;j<steps;j++){
var sec1:Vector.<Number> = res.splice(0,part);
var fft2:FFT = new FFT(part);
fft2.setData(sec1);
fft2.calcRealIFFT();
var wave1:Vector.<Number> = fft2.getData();
g.moveTo(100,shift*(j+1));
var m:Number = (Math.pow(j+1,pow)+0.004)*10;
m2=0;
for(i=1;i<part;i++)
{
spVal = wave1[i];
m2 = Math.max(Math.abs(spVal),m2);
g.lineTo(100+i,spVal/m+shift*(j+1));
}
//g.moveTo(100,m2/3+shift*(j+1));
//g.lineTo(100,m2/3+shift*(j+1)+1);
//output.appendText(m2.toString()+"\n");
graph.push(m2);
}
view.scroll(part-2,0);
view.draw(spr);
spr.graphics.clear();
spr.graphics.lineStyle(2,0xFFFF00);
//spr.graphics.moveTo(0,-graph[0]);
spr.graphics.moveTo(graph[0],-20);
for(i=1;i<graph.length;i++)
{
spr.graphics.lineTo(graph[i],i*85);///(Math.pow(i+2,-2)*100));
}
//spr.graphics.lineStyle(1,0xFF0000);
//spr.graphics.moveTo(0,(-Math.pow(1,pow)-0.04)*100);
//for(i=1;i<graph.length;i++)
//{
// spr.graphics.lineTo(i*5,(-Math.pow(i+1,pow)-0.04)*100);
//}
}
}