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  */
16 package com.googlecode.mp4parser.util;
17 
18 
19 public 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      */
l2i(long l)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