root/as3/ICODecoder/src/com/voidelement/images/ico/ICODecoder.as

/**
 * com.voidelement.images.ico.ICODecoder  Class for ActionScript 3.0 
 *  
 * @author       Copyright (c) 2008 munegon
 * @version      1.0
 *  
 * @link         http://www.voidelement.com/
 * @link         http://void.heteml.jp/blog/
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at 
 *  
 * http://www.apache.org/licenses/LICENSE-2.0 
 *  
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,  
 * either express or implied. See the License for the specific language 
 * governing permissions and limitations under the License. 
 */



package com.voidelement.images.ico {    
        import flash.display.BitmapData;
        import flash.errors.IOError;
        import flash.utils.ByteArray;
        import flash.utils.Endian;
        
        public class ICODecoder {
                private static var _verbose:Boolean = false;
                private static function get verbose():Boolean { return _verbose; }
                private static function set verbose( value:Boolean ):void { _verbose = value; }
                
                
                private var _header:ICOFileHeader;
                public function get header():ICOFileHeader { return _header; }
                
                
                /**
                 * コンストラクタ
                 */
                public function ICODecoder() {
                        
                }
                
                
                /**
                 * デコード
                 * 
                 * @param デコードしたいICOファイルのバイナリデータ
                 */
                public function decode( stream:ByteArray ):Array {
                        _header = new ICOFileHeader( stream );
                        
                        var info_arr:Array = new Array();
                        for ( var i:int = 0; i < header.num; ++i ) {
                                info_arr.push( new ICOInfoHeader( stream ) );
                        }
                        
                        var image_arr:Array = new Array();
                        for ( var j:int = 0; j < header.num; ++j ) {
                                image_arr.push( new ICOImageData( stream ) );   
                        }
                        
                        return image_arr;
                }
                
                
                /**
                 * ログ出力
                 */
                public static function log( message:String ):void {
                        if ( verbose ) {
                                trace( message );
                        }
                }
        }
}