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.util;
17
18
19public class CastUtils {
20    /**
21     * Casts a long to an int. In many cases I use a long for a UInt32 but this cannot be used to allocate
22     * ByteBuffers or arrays since they restricted to <code>Integer.MAX_VALUE</code> this cast-method will throw
23     * a RuntimeException if the cast would cause a loss of information.
24     *
25     * @param l the long value
26     * @return the long value as int
27     */
28    public static int l2i(long l) {
29        if (l > Integer.MAX_VALUE || l < Integer.MIN_VALUE) {
30            throw new RuntimeException("A cast to int has gone wrong. Please contact the mp4parser discussion group (" + l + ")");
31        }
32        return (int) l;
33    }
34}
35