I have a base64 encoded image made using the ActionScript function:
private static const BASE64_CHARS:String = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; public static function encodeByteArray(_arg1:ByteArray):String { var _local3:Array; var _local5:uint; var _local6:uint; var _local7:uint; var _local2 = ""; var _local4:Array = new Array(4); _arg1.position = 0; while (_arg1.bytesAvailable > 0) { _local3 = new Array(); _local5 = 0; while ((((_local5 < 3)) && ((_arg1.bytesAvailable > 0)))) { _local3[_local5] = _arg1.readUnsignedByte(); _local5++; }; _local4[0] = ((_local3[0] & 252) >> 2); _local4[1] = (((_local3[0] & 3) << 4) | (_local3[1] >> 4)); _local4[2] = (((_local3[1] & 15) << 2) | (_local3[2] >> 6)); _local4[3] = (_local3[2] & 63); _local6 = _local3.length; while (_local6 < 3) { _local4[(_local6 + 1)] = 64; _local6++; }; _local7 = 0; while (_local7 < _local4.length) { _local2 = (_local2 + BASE64_CHARS.charAt(_local4[_local7])); _local7++; }; }; return (_local2); }
Now I am trying to decode (without success) a string in JS / PHP and return the image. Here is the ActionScript decoding function:
public static function decodeToByteArray(_arg1:String):ByteArray{ var _local6:uint; var _local7:uint; var _local2:ByteArray = new ByteArray(); var _local3:Array = new Array(4); var _local4:Array = new Array(3); var _local5:uint; while (_local5 < _arg1.length) { _local6 = 0; while ((((_local6 < 4)) && (((_local5 + _local6) < _arg1.length)))) { _local3[_local6] = BASE64_CHARS.indexOf(_arg1.charAt((_local5 + _local6))); _local6++; }; _local4[0] = ((_local3[0] << 2) + ((_local3[1] & 48) >> 4)); _local4[1] = (((_local3[1] & 15) << 4) + ((_local3[2] & 60) >> 2)); _local4[2] = (((_local3[2] & 3) << 6) + _local3[3]); _local7 = 0; while (_local7 < _local4.length) { if (_local3[(_local7 + 1)] == 64){ break; }; _local2.writeByte(_local4[_local7]); _local7++; }; _local5 = (_local5 + 4); }; _local2.position = 0; return (_local2); }
I tried to convert the Aactionscript decoding function to JS, but I miss new ByteArray(); I do not know how to do that. I need a way to decode a coded image string back to the image. Here's a sample base64 image string encoded using the "encodeByteArray" function:
sample base64 encoded string
thanks for the help.
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