FreqData.java

/*
 * Copyright (c) 2007 innoSysTec (R) GmbH, Germany. All rights reserved.
 * Original author: Edmund Wagner
 * Creation date: 04.06.2007
 *
 * Source: $HeadURL$
 * Last changed: $LastChangedDate$
 *
 * the unrar licence applies to all junrar source and binary distributions
 * you are not allowed to use this source to re-create the RAR compression algorithm
 *
 * Here some html entities which can be used for escaping javadoc tags:
 * "&":  "&" or "&"
 * "<":  "&#060;" or "&lt;"
 * ">":  "&#062;" or "&gt;"
 * "@":  "&#064;"
 */
package com.github.junrar.unpack.ppm;

import com.github.junrar.io.Raw;

/**
 * DOCUMENT ME
 *
 * @author $LastChangedBy$
 * @version $LastChangedRevision$
 */
public class FreqData extends Pointer {

    public static final int size = 6;

//    struct FreqData
//    {
//        ushort SummFreq;
//        STATE _PACK_ATTR * Stats;
//    };

    public FreqData(byte[]mem) {
        super(mem);
    }

    public FreqData init(byte[] mem) {
        this.mem = mem;
        pos = 0;
        return this;
    }

    public int getSummFreq() {
        return Raw.readShortLittleEndian(mem,  pos) & 0xffff;
    }

    public void setSummFreq(int summFreq) {
        Raw.writeShortLittleEndian(mem, pos, (short) summFreq);
    }

    public void incSummFreq(int dSummFreq) {
        Raw.incShortLittleEndian(mem, pos, dSummFreq);
    }

    public int getStats() {
        return Raw.readIntLittleEndian(mem,  pos + 2);
    }

    public void setStats(State state) {
        setStats(state.getAddress());
    }

    public void setStats(int state) {
        Raw.writeIntLittleEndian(mem, pos + 2, state);
    }

    public String toString() {
        StringBuilder buffer = new StringBuilder();
        buffer.append("FreqData[");
        buffer.append("\n  pos=");
        buffer.append(pos);
        buffer.append("\n  size=");
        buffer.append(size);
        buffer.append("\n  summFreq=");
        buffer.append(getSummFreq());
        buffer.append("\n  stats=");
        buffer.append(getStats());
        buffer.append("\n]");
        return buffer.toString();
    }

}