com.mycomm.itool.compress.huffman.s2.BitByteConverter Maven / Gradle / Ivy
The newest version!
package com.mycomm.itool.compress.huffman.s2;
/**
* Huffman Tree Class
* Written By: Mitchell Pomery (21130887)
* Used to create mappings for use in huffman coding
**/
public class BitByteConverter {
public static byte booleanArrayToByte(boolean[] array) {
byte character = 0;
if (array.length == 8) {
if (array[0]) {
character = (byte) (character | 0x80); //Leftmost
}
if (array[1]) {
character = (byte) (character | 0x40);
}
if (array[2]) {
character = (byte) (character | 0x20);
}
if (array[3]) {
character = (byte) (character | 0x10);
}
if (array[4]) {
character = (byte) (character | 0x08);
}
if (array[5]) {
character = (byte) (character | 0x04);
}
if (array[6]) {
character = (byte) (character | 0x02);
}
if (array[7]) {
character = (byte) (character | 0x01);
}
}
else {
///TODO Throw Exception
}
return character;
}
public static boolean[] byteToBooleanArray(byte characterbyte) {
boolean[] array = new boolean[8];
array[0] = ((characterbyte & 0x80) != 0); //Leftmost
array[1] = ((characterbyte & 0x40) != 0);
array[2] = ((characterbyte & 0x20) != 0);
array[3] = ((characterbyte & 0x10) != 0);
array[4] = ((characterbyte & 0x08) != 0);
array[5] = ((characterbyte & 0x04) != 0);
array[6] = ((characterbyte & 0x02) != 0);
array[7] = ((characterbyte & 0x01) != 0); //Rightmost
return array;
}
}