ASImageLib is an OOP lib to decode PNG and BMP in AS3

var bytes:ByteArray = new _pngClass();
var bmpData:BitmapData = new PNGDecoder().decode(bytes);
this.addChild(new Bitmap(bmpData));

• 1.Gray Scale
• 2.Gray Scale Alpha width bitDepth 8 or 16
• 3.Palette width bitDepth 1,2,3,4 or 8
• 4.RGB alpha

• 1. Interlacing mode