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DataMessageWithLinkControl.java
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DataMessageWithLinkControl.java
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/*
* *****************************************************************************
* Copyright (C) 2014-2023 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.dmr.message.data;
import io.github.dsheirer.bits.CorrectedBinaryMessage;
import io.github.dsheirer.identifier.Identifier;
import io.github.dsheirer.module.decode.dmr.DMRSyncPattern;
import io.github.dsheirer.module.decode.dmr.message.CACH;
import io.github.dsheirer.module.decode.dmr.message.data.lc.LCMessage;
import io.github.dsheirer.module.decode.dmr.message.data.lc.LCMessageFactory;
import io.github.dsheirer.module.decode.dmr.message.type.DataType;
import java.util.Collections;
import java.util.List;
/**
* Data Message with Full Link Control Payload.
*/
public abstract class DataMessageWithLinkControl extends DataMessage
{
private LCMessage mLCMessage;
/**
* Constructs an instance.
*
* @param syncPattern either BASE_STATION_DATA or MOBILE_STATION_DATA
* @param message containing extracted 196-bit payload.
* @param cach for the DMR burst
* @param slotType for this data message
* @param timestamp message was received
* @param timeslot for the DMR burst
*/
public DataMessageWithLinkControl(DMRSyncPattern syncPattern, CorrectedBinaryMessage message, CACH cach,
SlotType slotType, long timestamp, int timeslot)
{
super(syncPattern, message, cach, slotType, timestamp, timeslot);
}
/**
* Access the embedded link control message
*/
public LCMessage getLCMessage()
{
if(mLCMessage == null)
{
boolean isTerminator = getSlotType().getDataType() == DataType.TLC;
mLCMessage = LCMessageFactory.createFull(getMessage(), getTimestamp(), getTimeslot(), isTerminator);
}
return mLCMessage;
}
@Override
public String toString()
{
StringBuilder sb = new StringBuilder();
if(hasRAS())
{
sb.append(" RAS:").append(getBPTCReservedBits());
}
sb.append(getSlotType());
sb.append(" ").append(getLCMessage());
return sb.toString();
}
@Override
public List<Identifier> getIdentifiers()
{
if(getLCMessage() != null)
{
return getLCMessage().getIdentifiers();
}
return Collections.emptyList();
}
}