P25 work in progress

src/decode/p25/message/pdu/osp/data/GroupDataChannelGrantExtended.java

@@ -0,0 +1,163 @@
+package decode.p25.message.pdu.osp.data;
+
+import java.util.Date;
+
+import alias.AliasList;
+import bits.BitSetBuffer;
+import decode.p25.message.pdu.PDUMessage;
+import decode.p25.message.tsbk.osp.control.IdentifierUpdate;
+import decode.p25.message.tsbk.osp.control.IdentifierUpdateReceiver;
+import decode.p25.reference.DataUnitID;
+import decode.p25.reference.Opcode;
+
+public class GroupDataChannelGrantExtended extends PDUMessage 
+								implements IdentifierUpdateReceiver
+{
+    /* Service Options */
+    public static final int EMERGENCY_FLAG = 128;
+    public static final int ENCRYPTED_CHANNEL_FLAG = 129;
+    public static final int DUPLEX_MODE = 130;
+    public static final int SESSION_MODE = 131;
+	
+	public static final int[] SOURCE_ADDRESS = { 88,89,90,91,92,93,94,95,96,97,
+		98,99,100,101,102,103,104,105,106,107,108,109,110,111 };
+	public static final int[] SERVICE_OPTIONS = { 128,129,130,131,132,133,134,
+		135 };
+	public static final int[] TRANSMIT_IDENTIFIER = { 160,161,162,163 };
+	public static final int[] TRANSMIT_CHANNEL = { 164,165,166,167,168,169,170,
+		171,172,173,174,175 };
+	public static final int[] RECEIVE_IDENTIFIER = { 176,177,178,179 };
+	public static final int[] RECEIVE_CHANNEL = { 180,181,182,183,184,185,186,
+		187,188,189,190,191 };
+	public static final int[] GROUP_ADDRESS = { 192,193,194,195,196,197,198,199,
+		200,201,202,203,204,205,206,207 };
+	public static final int[] MULTIPLE_BLOCK_CRC = { 224,225,226,227,228,229,
+		230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,
+		248,249,250,251,252,253,254,255 };
+	
+	private IdentifierUpdate mTransmitIdentifierUpdate;
+	private IdentifierUpdate mReceiveIdentifierUpdate;
+	
+	public GroupDataChannelGrantExtended( BitSetBuffer message,
+            DataUnitID duid, AliasList aliasList )
+    {
+	    super( message, duid, aliasList );
+    }
+
+    @Override
+    public String getEventType()
+    {
+        return Opcode.TELEPHONE_INTERCONNECT_VOICE_CHANNEL_GRANT.getDescription();
+    }
+    
+    public String getMessage()
+    {
+        StringBuilder sb = new StringBuilder();
+        
+        sb.append( getMessageStub() );
+
+        if( isEmergency() )
+        {
+            sb.append( " EMERGENCY" );
+        }
+        
+        sb.append( " FROM:" );
+        sb.append( getSourceAddress() );
+        
+        sb.append( " TO:" );
+        sb.append( getGroupAddress() );
+        
+        sb.append( " CHAN DN:" + getTransmitIdentifier() + "-" + getTransmitChannel() );
+        sb.append( " " + getDownlinkFrequency() );
+        
+        sb.append( " CHAN UP:" + getReceiveIdentifier() + "-" + getReceiveChannel() );
+        sb.append( " " + getUplinkFrequency() );
+        
+        return sb.toString();
+    }
+    
+    public boolean isEmergency()
+    {
+        return mMessage.get( EMERGENCY_FLAG );
+    }
+    
+    public boolean isEncryptedChannel()
+    {
+        return mMessage.get( ENCRYPTED_CHANNEL_FLAG );
+    }
+    
+    public DuplexMode getDuplexMode()
+    {
+        return mMessage.get( DUPLEX_MODE ) ? DuplexMode.FULL : DuplexMode.HALF;
+    }
+
+    public SessionMode getSessionMode()
+    {
+        return mMessage.get( SESSION_MODE ) ? 
+                SessionMode.CIRCUIT : SessionMode.PACKET;
+    }
+
+    public String getSourceAddress()
+    {
+    	return mMessage.getHex( SOURCE_ADDRESS, 6 );
+    }
+
+    public String getGroupAddress()
+    {
+    	return mMessage.getHex( GROUP_ADDRESS, 4 );
+    }
+    
+	public int getTransmitIdentifier()
+	{
+		return mMessage.getInt( TRANSMIT_IDENTIFIER );
+	}
+	
+	public int getTransmitChannel()
+	{
+		return mMessage.getInt( TRANSMIT_CHANNEL );
+	}
+	
+	public int getReceiveIdentifier()
+	{
+		return mMessage.getInt( RECEIVE_IDENTIFIER );
+	}
+	
+	public int getReceiveChannel()
+	{
+		return mMessage.getInt( RECEIVE_CHANNEL );
+	}
+	
+    public long getDownlinkFrequency()
+    {
+    	return calculateDownlink( mTransmitIdentifierUpdate, getTransmitChannel() );
+    }
+    
+    public long getUplinkFrequency()
+    {
+    	return calculateUplink( mReceiveIdentifierUpdate, getReceiveChannel() );
+    }
+
+	@Override
+    public void setIdentifierMessage( int identifier, IdentifierUpdate message )
+    {
+		if( identifier == getTransmitIdentifier() )
+		{
+			mTransmitIdentifierUpdate = message;
+		}
+		
+		if( identifier == getReceiveIdentifier() )
+		{
+			mReceiveIdentifierUpdate = message;
+		}
+    }
+	
+	public int[] getIdentifiers()
+	{
+		int[] idens = new int[ 2 ];
+		
+		idens[ 0 ] = getTransmitIdentifier();
+		idens[ 1 ] = getReceiveIdentifier();
+		
+		return idens;
+	}
+}