fixed bug with set/getInt8 methods

Author: rii-mango

src/decoder.js

@@ -606,28 +606,31 @@ jpeg.lossless.Decoder.prototype.output = function (PRED) {
 };
 
 
+
 jpeg.lossless.Decoder.prototype.setValue16 = function (index, val) {
     this.outputData.setInt16(index * 2, val, true);
 };
 
 
+
 jpeg.lossless.Decoder.prototype.getValue16 = function (index) {
     return this.outputData.getInt16(index * 2, true);
 };
 
 
 
 jpeg.lossless.Decoder.prototype.setValue8 = function (index, val) {
-    this.outputData.setInt16(index, val, true);
+    this.outputData.setInt8(index, val);
 };
 
 
 
 jpeg.lossless.Decoder.prototype.getValue8 = function (index) {
-    return this.outputData.getInt16(index, true);
+    return this.outputData.getInt8(index);
 };
 
 
+
 jpeg.lossless.Decoder.prototype.readApp = function() {
     var count = 0, length = this.stream.get16();
     count += 2;