Fix batch timestamp parsing error.

Bug:18166784
Change-Id: I4817a1410c570bd1fa59425c257fb4a3d96e9e1f

1 files changed, 46 insertions, 0 deletions

diff --git a/src/com/android/bluetooth/util/NumberUtils.java b/src/com/android/bluetooth/util/NumberUtils.java
new file mode 100644
index 000000000..1d2745660
--- /dev/null
+++ b/src/com/android/bluetooth/util/NumberUtils.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.bluetooth.util;
+
+/**
+ * Utility for parsing numbers in Bluetooth.
+ */
+public class NumberUtils {
+
+    /**
+     * Convert a byte to unsigned int.
+     */
+    public static int unsignedByteToInt(byte b) {
+        return b & 0xFF;
+    }
+
+    /**
+     * Convert a little endian byte array to integer.
+     */
+    public static int littleEndianByteArrayToInt(byte[] bytes) {
+        int length = bytes.length;
+        if (length == 0) {
+            return 0;
+        }
+        int result = 0;
+        for (int i = length - 1; i >= 0; i--) {
+            int value = unsignedByteToInt(bytes[i]);
+            result += (value << (i * 8));
+        }
+        return result;
+    }
+}