1 files changed, 75 insertions, 0 deletions
diff --git a/js/dojo/dojox/encoding/bits.js b/js/dojo/dojox/encoding/bits.js
new file mode 100644
index 0000000..359c5e8
--- /dev/null
+++ b/js/dojo/dojox/encoding/bits.js
@@ -0,0 +1,75 @@
+//>>built
+define("dojox/encoding/bits", [
+	"dojo/_base/lang"	// dojo.extend
+], function(lang) {
+	var bits = lang.getObject("dojox.encoding.bits", true);
+	/*=====
+		bits = dojox.encoding.bits;
+	=====*/
+
+	bits.OutputStream = function(){
+		this.reset();
+	};
+
+	lang.extend(bits.OutputStream, {
+		reset: function(){
+			this.buffer = [];
+			this.accumulator = 0;
+			this.available = 8;
+		},
+		putBits: function(value, width){
+			while(width){
+				var w = Math.min(width, this.available);
+				var v = (w <= width ? value >>> (width - w) : value) << (this.available - w);
+				this.accumulator |= v & (255 >>> (8 - this.available));
+				this.available -= w;
+				if(!this.available){
+					this.buffer.push(this.accumulator);
+					this.accumulator = 0;
+					this.available = 8;
+				}
+				width -= w;
+			}
+		},
+		getWidth: function(){
+			return this.buffer.length * 8 + (8 - this.available);
+		},
+		getBuffer: function(){
+			var b = this.buffer;
+			if(this.available < 8){ b.push(this.accumulator & (255 << this.available)); }
+			this.reset();
+			return b;
+		}
+	});
+
+	bits.InputStream = function(buffer, width){
+		this.buffer = buffer;
+		this.width = width;
+		this.bbyte = this.bit = 0;
+	};
+
+	lang.extend(bits.InputStream, {
+		getBits: function(width){
+			var r = 0;
+			while(width){
+				var w = Math.min(width, 8 - this.bit);
+				var v = this.buffer[this.bbyte] >>> (8 - this.bit - w);
+				r <<= w;
+				r |= v & ~(~0 << w);
+				this.bit += w;
+				if(this.bit == 8){
+					++this.bbyte;
+					this.bit = 0;
+				}
+				width -= w;
+			}
+			return r;
+		},
+		getWidth: function(){
+			return this.width - this.bbyte * 8 - this.bit;
+		}
+	});
+
+
+	return bits;
+});