1/*
2 * Copyright 2012 Sebastian Annies, Hamburg
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 */
16package com.googlecode.mp4parser.authoring;
17
18import java.util.Date;
19
20/**
21 * Converts ISO Dates (seconds since 1/1/1904) to Date and vice versa.
22 */
23public class DateHelper {
24    /**
25     * Converts a long value with seconds since 1/1/1904 to Date.
26     *
27     * @param secondsSince seconds since 1/1/1904
28     * @return date the corresponding <code>Date</code>
29     */
30    static public Date convert(long secondsSince) {
31        return new Date((secondsSince - 2082844800L) * 1000L);
32    }
33
34
35    /**
36     * Converts a date as long to a mac date as long
37     *
38     * @param date date to convert
39     * @return date in mac format
40     */
41    static public long convert(Date date) {
42        return (date.getTime() / 1000L) + 2082844800L;
43    }
44}
45