diff --git a/src/encoding/BinaryXMLCodec.js b/src/encoding/BinaryXMLCodec.js
new file mode 100644
index 0000000..077c7e2
--- /dev/null
+++ b/src/encoding/BinaryXMLCodec.js
@@ -0,0 +1,135 @@
+
+var XML_EXT = 0x00; 
+	
+var XML_TAG = 0x01; 
+	
+var XML_DTAG = 0x02; 
+	
+var XML_ATTR = 0x03; 
+ 
+var XML_DATTR = 0x04; 
+	
+var XML_BLOB = 0x05; 
+	
+var XML_UDATA = 0x06; 
+	
+var XML_CLOSE = 0x0;
+
+var XML_SUBTYPE_PROCESSING_INSTRUCTIONS = 16; 
+	
+
+var XML_TT_BITS = 3;
+var XML_TT_MASK = ((1 << XML_TT_BITS) - 1);
+var XML_TT_VAL_BITS = XML_TT_BITS + 1;
+var XML_TT_VAL_MASK = ((1 << (XML_TT_VAL_BITS)) - 1);
+var XML_REG_VAL_BITS = 7;
+var XML_REG_VAL_MASK = ((1 << XML_REG_VAL_BITS) - 1);
+var XML_TT_NO_MORE = (1 << XML_REG_VAL_BITS); // 0x80
+var BYTE_MASK = 0xFF;
+var LONG_BYTES = 8;
+var LONG_BITS = 64;
+	
+var bits_11 = 0x0000007FFL;
+var bits_18 = 0x00003FFFFL;
+var bits_32 = 0x0FFFFFFFFL;
+
+
+var TypeAndVal = function TypeAndVal(_type,_val) {
+	this.type = _type;
+	this.val = _val;
+	
+};
+exports.TypeAndVal = TypeAndVal;
+
+var BinaryXMLCodec = function BinaryXMLCodec(){
+	
+	this.CODEC_NAME = "Binary";
+			
+
+
+};
+
+exports.BinaryXMLCodec = BinaryXMLCodec;
+
+
+    
+BinaryXMLCodec.prototype.encodeTypeAndVal = function(
+	//int
+	type,
+	//long
+	val,
+	//byte []
+	buf,
+	//int
+	offset) {
+	
+	if ((type > XML_UDATA) || (type < 0) || (val < 0)) {
+		throw new Exception("Tag and value must be positive, and tag valid.");
+	}
+	
+	// Encode backwards. Calculate how many bytes we need:
+	int numEncodingBytes = numEncodingBytes(val);
+	
+	if ((offset + numEncodingBytes) > buf.length) {
+		throw new Exception("Buffer space of " + (buf.length-offset) + 
+											" bytes insufficient to hold " + 
+											numEncodingBytes + " of encoded type and value.");
+	}
+	
+
+	buf[offset + numEncodingBytes - 1] = 
+		(BYTE_MASK &
+					(((XML_TT_MASK & type) | 
+					 ((XML_TT_VAL_MASK & val) << XML_TT_BITS))) |
+					 XML_TT_NO_MORE); 
+	val = val >>> XML_TT_VAL_BITS;;
+
+	int i = offset + numEncodingBytes - 2;
+	while ((0 != val) && (i >= offset)) {
+		buf[i] = (BYTE_MASK &
+						    (val & XML_REG_VAL_MASK)); 
+		val = val >>> XML_REG_VAL_BITS;
+		--i;
+	}
+	
+	return numEncodingBytes;
+};
+	
+BinaryXMLCodec.prototype.decodeTypeAndVal = function(
+		/*InputStream*/
+		istream) {
+	
+	int next;
+	int type = -1;
+	long val = 0;
+	boolean more = true;
+
+	do {
+		next = istream.read();
+		
+		if (next < 0) {
+			return null; 
+		}
+
+		if ((0 == next) && (0 == val)) {
+			return null;
+		}
+		
+		more = (0 == (next & XML_TT_NO_MORE));
+		
+		if  (more) {
+			val = val << XML_REG_VAL_BITS;
+			val |= (next & XML_REG_VAL_MASK);
+		} else {
+
+			type = next & XML_TT_MASK;
+			val = val << XML_TT_VAL_BITS;
+			val |= ((next >>> XML_TT_BITS) & XML_TT_VAL_MASK);
+		}
+		
+	} while (more);
+	
+	return new TypeAndVal(type, val);
+};
+
+//TODO
\ No newline at end of file