sdrtrunk/src/module/decode/p25/message/ldu/lc/GroupVoiceChannelUpdate.java

/*******************************************************************************
 * sdrtrunk
 * Copyright (C) 2014-2017 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 module.decode.p25.message.ldu.lc;

import module.decode.p25.message.IBandIdentifier;
import module.decode.p25.message.IdentifierReceiver;
import module.decode.p25.message.ldu.LDU1Message;
import module.decode.p25.reference.LinkControlOpcode;

public class GroupVoiceChannelUpdate extends LDU1Message implements IdentifierReceiver
{
    public static final int[] IDENTIFIER_A = {364, 365, 366, 367};
    public static final int[] CHANNEL_A = {372, 373, 374, 375, 376, 377, 382, 383, 384, 385, 386, 387};
    public static final int[] GROUP_ADDRESS_A = {536, 537, 538, 539, 540, 541, 546, 547, 548, 549, 550, 551, 556, 557,
        558, 559};
    public static final int[] IDENTIFIER_B = {560, 561, 566, 567};
    public static final int[] CHANNEL_B = {568, 569, 570, 571, 720, 721, 722, 723, 724, 725, 730, 731};
    public static final int[] GROUP_ADDRESS_B = {732, 733, 734, 735, 740, 741, 742, 743, 744, 745, 750, 751, 752, 753,
        754, 755};

    private IBandIdentifier mIdentifierUpdateA;
    private IBandIdentifier mIdentifierUpdateB;

    public GroupVoiceChannelUpdate(LDU1Message message)
    {
        super(message);
    }

    @Override
    public String getEventType()
    {
        return LinkControlOpcode.GROUP_VOICE_CHANNEL_UPDATE.getDescription();
    }

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

        sb.append(getMessageStub());

        sb.append(" CHAN A:" + getChannelA());

        sb.append(" GRP A:" + getGroupAddressA());

        if(hasChannelB())
        {
            sb.append(" CHAN B:" + getChannelA());

            sb.append(" GRP B:" + getGroupAddressA());
        }

        return sb.toString();
    }

    public int getChannelIdentifierA()
    {
        return mMessage.getInt(IDENTIFIER_A);
    }

    public int getChannelNumberA()
    {
        return mMessage.getInt(CHANNEL_A);
    }

    public String getChannelA()
    {
        return getChannelIdentifierA() + "-" + getChannelNumberA();
    }

    public int getChannelIdentifierB()
    {
        return mMessage.getInt(IDENTIFIER_B);
    }

    public int getChannelNumberB()
    {
        return mMessage.getInt(CHANNEL_B);
    }

    public String getChannelB()
    {
        return getChannelIdentifierB() + "-" + getChannelNumberB();
    }

    public boolean hasChannelB()
    {
        return getChannelNumberB() != 0;
    }

    public String getGroupAddressA()
    {
        return mMessage.getHex(GROUP_ADDRESS_A, 4);
    }

    public String getGroupAddressB()
    {
        return mMessage.getHex(GROUP_ADDRESS_B, 4);
    }

    @Override
    public void setIdentifierMessage(int identifier, IBandIdentifier message)
    {
        if(identifier == getChannelIdentifierA())
        {
            mIdentifierUpdateA = message;
        }
        if(identifier == getChannelIdentifierB())
        {
            mIdentifierUpdateB = message;
        }
    }

    @Override
    public int[] getIdentifiers()
    {
        if(hasChannelB())
        {
            int[] identifiers = new int[2];
            identifiers[0] = getChannelIdentifierA();
            identifiers[1] = getChannelIdentifierB();

            return identifiers;
        }
        else
        {
            int[] identifiers = new int[1];
            identifiers[0] = getChannelIdentifierA();

            return identifiers;
        }
    }

    public long getDownlinkFrequencyA()
    {
        if(mIdentifierUpdateA != null)
        {
            return mIdentifierUpdateA.getDownlinkFrequency(getChannelNumberA());
        }

        return 0;
    }

    public long getUplinkFrequencyA()
    {
        if(mIdentifierUpdateA != null)
        {
            return mIdentifierUpdateA.getUplinkFrequency(getChannelNumberA());
        }

        return 0;
    }

    public long getDownlinkFrequencyB()
    {
        if(mIdentifierUpdateB != null)
        {
            return mIdentifierUpdateB.getDownlinkFrequency(getChannelNumberB());
        }

        return 0;
    }

    public long getUplinkFrequencyB()
    {
        if(mIdentifierUpdateB != null)
        {
            return mIdentifierUpdateB.getUplinkFrequency(getChannelNumberB());
        }

        return 0;
    }
}