| /* |
| * 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; |
| } |
| } |