io.github.dsheirer.module.decode.ltrstandard.message.LTRStandardMessage.java Source code

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Here is the source code for io.github.dsheirer.module.decode.ltrstandard.message.LTRStandardMessage.java

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/*******************************************************************************
 *     SDR Trunk 
 *     Copyright (C) 2014-2016 Dennis Sheirer
 * 
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 * 
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 * 
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>
 ******************************************************************************/
package io.github.dsheirer.module.decode.ltrstandard.message;

import io.github.dsheirer.alias.Alias;
import io.github.dsheirer.alias.AliasList;
import io.github.dsheirer.bits.BinaryMessage;
import io.github.dsheirer.edac.CRC;
import io.github.dsheirer.message.Message;
import io.github.dsheirer.message.MessageDirection;
import io.github.dsheirer.message.MessageType;
import io.github.dsheirer.module.decode.DecoderType;
import org.apache.commons.lang3.StringUtils;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

public abstract class LTRStandardMessage extends Message {
    protected SimpleDateFormat mDatestampFormatter = new SimpleDateFormat("yyyyMMdd HHmmss");

    public static final int[] SYNC = { 0, 1, 2, 3, 4, 5, 6, 7, 8 };
    public static final int[] AREA = { 9 };
    public static final int[] CHANNEL = { 10, 11, 12, 13, 14 };
    public static final int[] HOME_REPEATER = { 15, 16, 17, 18, 19 };
    public static final int[] GROUP = { 20, 21, 22, 23, 24, 25, 26, 27 };
    public static final int[] FREE = { 28, 29, 30, 31, 32 };
    public static final int[] CHECKSUM = { 33, 34, 35, 36, 37, 38, 39 };

    protected BinaryMessage mMessage;
    protected MessageDirection mMessageDirection;
    protected AliasList mAliasList;
    protected CRC mCRC;

    public LTRStandardMessage(BinaryMessage message, MessageDirection direction, AliasList list, CRC crc) {
        mMessage = message;
        mMessageDirection = direction;
        mAliasList = list;
        mCRC = crc;
    }

    public abstract MessageType getMessageType();

    public boolean isValid() {
        return mCRC != CRC.FAILED_CRC && mCRC != CRC.FAILED_PARITY;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append(mDatestampFormatter.format(new Date(System.currentTimeMillis())));
        sb.append(" LTR ");
        sb.append(mMessageDirection.name());
        sb.append(" [");
        sb.append(mCRC.getAbbreviation());
        sb.append("] ");
        sb.append(getMessage());

        return sb.toString();
    }

    @Override
    public String getBinaryMessage() {
        return mMessage.toString();
    }

    public CRC getCRC() {
        return mCRC;
    }

    public int getArea() {
        return mMessage.getInt(AREA);
    }

    public int getChannel() {
        return mMessage.getInt(CHANNEL);
    }

    public String getChannelFormatted() {
        return StringUtils.leftPad(String.valueOf(getChannel()), 2, "0");
    }

    public int getHomeRepeater() {
        return mMessage.getInt(HOME_REPEATER);
    }

    public String getHomeRepeaterFormatted() {
        return StringUtils.leftPad(String.valueOf(getHomeRepeater()), 2, "0");
    }

    public int getGroup() {
        return mMessage.getInt(GROUP);
    }

    public String getGroupFormatted() {
        return StringUtils.leftPad(String.valueOf(getGroup()), 3, "0");
    }

    public int getFree() {
        return mMessage.getInt(FREE);
    }

    public String getFreeFormatted() {
        return StringUtils.leftPad(String.valueOf(getFree()), 2, "0");
    }

    @Override
    public String getFromID() {
        return null;
    }

    @Override
    public Alias getFromIDAlias() {
        return null;
    }

    @Override
    public String getToID() {
        StringBuilder sb = new StringBuilder();

        sb.append(getArea());
        sb.append("-");
        sb.append(getHomeRepeaterFormatted());
        sb.append("-");
        sb.append(getGroupFormatted());

        return sb.toString();
    }

    @Override
    public Alias getToIDAlias() {
        return mAliasList.getTalkgroupAlias(getToID());
    }

    public List<Alias> getAliases() {
        List<Alias> aliases = new ArrayList<>();

        Alias talkgroupAlias = getToIDAlias();

        if (talkgroupAlias != null) {
            aliases.add(talkgroupAlias);
        }

        return aliases;
    }

    public int getCRCChecksum() {
        return mMessage.getInt(CHECKSUM);
    }

    @Override
    public String getProtocol() {
        return DecoderType.LTR_STANDARD.getDisplayString();
    }

    @Override
    public String getEventType() {
        return getMessageType().getDisplayText();
    }

    @Override
    public String getErrorStatus() {
        return mCRC.getDisplayText();
    }
}