completed jni example with wind direction query

jni-example/decodesdk/src/net/irext/decode/sdk/IRDecode.java

@@ -37,6 +37,8 @@ public class IRDecode {
 
     private native int irACGetSupportedSwing(int acMode);
 
+    private native int irACGetSupportedWindDirection(int acMode);
+
     private static IRDecode mInstance;
 
     public static IRDecode getInstance() {
@@ -114,6 +116,11 @@ public class IRDecode {
         return retSupportedSwing;
     }
 
+    public int getACSupportedWindDirection(int acMode) {
+        // how many directions supported by specific AC
+        return irACGetSupportedWindDirection(acMode);
+    }
+
     public static void main(String[] args) {
         int ret = 0;
         System.out.println("This is IR decode test");