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
17package com.android.tv.tuner.util;
18
19/**
20 * Utility class for converting date and time.
21 */
22public 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
26    private ConvertUtils() { }
27
28    public static long convertGPSTimeToUnixEpoch(long gpsTime) {
29        return gpsTime + DIFF_BETWEEN_UNIX_EPOCH_AND_GPS;
30    }
31
32    public static long convertUnixEpochToGPSTime(long epochTime) {
33        return epochTime - DIFF_BETWEEN_UNIX_EPOCH_AND_GPS;
34    }
35}
36