com.clearspring.analytics.util.Bits Maven / Gradle / Ivy
/*
* Copyright (C) 2011 Clearspring Technologies, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.clearspring.analytics.util;
import java.io.ByteArrayInputStream;
import java.io.DataInput;
import java.io.DataInputStream;
import java.io.IOException;
public class Bits {
public static int[] getBits(byte[] mBytes) throws IOException {
int bitSize = mBytes.length / 4;
int[] bits = new int[bitSize];
DataInputStream dis = new DataInputStream(new ByteArrayInputStream(mBytes));
for (int i = 0; i < bitSize; i++) {
bits[i] = dis.readInt();
}
return bits;
}
/**
* This method might be better described as
* "byte array to int array" or "data input to int array"
*/
public static int[] getBits(DataInput dataIn, int byteLength) throws IOException {
int bitSize = byteLength / 4;
int[] bits = new int[bitSize];
for (int i = 0; i < bitSize; i++) {
bits[i] = dataIn.readInt();
}
return bits;
}
}