1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.usbtuner.util;
18 
19 /**
20  * Utility class for converting date and time.
21  */
22 public class ConvertUtils {
23     // Time diff between 1.1.1970 00:00:00 and 6.1.1980 00:00:00
24     private static final long DIFF_BETWEEN_UNIX_EPOCH_AND_GPS = 315964800;
25 
ConvertUtils()26     private ConvertUtils() { }
27 
convertGPSTimeToUnixEpoch(long gpsTime)28     public static long convertGPSTimeToUnixEpoch(long gpsTime) {
29         return gpsTime + DIFF_BETWEEN_UNIX_EPOCH_AND_GPS;
30     }
31 
convertUnixEpochToGPSTime(long epochTime)32     public static long convertUnixEpochToGPSTime(long epochTime) {
33         return epochTime - DIFF_BETWEEN_UNIX_EPOCH_AND_GPS;
34     }
35 }
36