Java Number Unpack unpackInt(final int argb, final int type)

Description

unpack Int

License

Open Source License

Declaration

public static int[] unpackInt(final int argb, final int type) 

Method Source Code

//package com.java2s;
/*//from   w w  w. j  ava  2 s  .co m
 *  Copyright (C) 2011-2014 Brian Groenke
 *  All rights reserved.
 * 
 *  This file is part of the 2DX Graphics Library.
 *
 *  This Source Code Form is subject to the terms of the
 *  Mozilla Public License, v. 2.0. If a copy of the MPL 
 *  was not distributed with this file, You can obtain one at 
 *  http://mozilla.org/MPL/2.0/.
 */

public class Main {
    public static final int TYPE_ARGB = 0xAA, TYPE_RGBA = 0xAB, TYPE_RGB = 0xAC;

    public static int[] unpackInt(final int argb, final int type) {

        int[] vals = null;
        int p1 = 0;
        int p2 = 1;
        int p3 = 2;
        int p4 = 3;
        switch (type) {
        case TYPE_RGB:
            vals = new int[3];
            vals[p1] = argb >> 16 & 0xFF;
            vals[p2] = argb >> 8 & 0xFF;
            vals[p3] = argb & 0xFF;
            break;
        case TYPE_RGBA:
        case TYPE_ARGB:
            vals = new int[4];
            vals[p4] = argb & 0xFF;
            vals[p3] = argb >> 8 & 0xFF;
            vals[p2] = argb >> 16 & 0xFF;
            vals[p1] = argb >> 24 & 0xFF;
            break;
        default:
            throw (new IllegalArgumentException("type must be a valid field defined by ColorUtils class"));
        }
        return vals;
    }

    public static int[] unpackInt(final int[] vals, final int argb) {

        switch (vals.length) {
        case 3:
            vals[0] = argb >> 16 & 0xFF;
            vals[1] = argb >> 8 & 0xFF;
            vals[2] = argb & 0xFF;
            break;
        case 4:
            vals[3] = argb & 0xFF;
            vals[2] = argb >> 8 & 0xFF;
            vals[1] = argb >> 16 & 0xFF;
            vals[0] = argb >> 24 & 0xFF;
            break;
        default:
            throw (new IllegalArgumentException("type must be a valid field defined by ColorUtils class"));
        }
        return vals;
    }
}

Related

1. unpack64(long num)
2. unpackDigital(int packed)
3. unpackInt(int packedInt, int numBits, int numShiftedLeft)
4. unpackInt(long theLong, boolean isFirst)
5. unpackInts(long... longs)
6. unpackKmer(final long value)