P25 work in progress

2026-11-12 16:47:31 -05:00 · 2015-01-02 14:08:22 +00:00
parent 95ddadc598
commit 03460eeb19
122 changed files with 5372 additions and 279 deletions
--- a/src/decode/p25/message/tdu/lc/GroupVoiceChannelUpdateExplicit.java
+++ b/src/decode/p25/message/tdu/lc/GroupVoiceChannelUpdateExplicit.java
@@ -0,0 +1,156 @@
+package decode.p25.message.tdu.lc;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import decode.p25.message.IdentifierProvider;
+import decode.p25.message.P25Message.DuplexMode;
+import decode.p25.message.P25Message.SessionMode;
+import decode.p25.message.tsbk.osp.control.IdentifierProviderReceiver;
+import decode.p25.reference.LinkControlOpcode;
+
+public class GroupVoiceChannelUpdateExplicit extends TDULinkControlMessage
+									 implements IdentifierProviderReceiver
+{
+	private final static Logger mLog = 
+			LoggerFactory.getLogger( GroupVoiceChannelUpdateExplicit.class );
+
+    public static final int EMERGENCY_FLAG = 92;
+    public static final int ENCRYPTED_CHANNEL_FLAG = 93;
+    public static final int DUPLEX_MODE = 94;
+    public static final int SESSION_MODE = 95;
+	public static final int[] GROUP_ADDRESS = { 112,113,114,115,116,117,118,
+		119,120,121,122,123,136,137,138,139 };
+	public static final int[] TRANSMIT_IDENTIFIER = { 140,141,142,143 };
+	public static final int[] TRANSMIT_CHANNEL = { 144,145,146,147,160,161,162,
+		163,164,165,166,167 };
+	public static final int[] RECEIVE_IDENTIFIER = { 168,169,170,171 };
+	public static final int[] RECEIVE_CHANNEL = { 184,185,186,187,188,189,190,
+		191,192,193,194,195,196,197,198,199 };
+	
+	private IdentifierProvider mTransmitIdentifierUpdate;
+	private IdentifierProvider mReceiveIdentifierUpdate;
+	
+	public GroupVoiceChannelUpdateExplicit( TDULinkControlMessage source )
+	{
+		super( source );
+	}
+	
+    @Override
+    public String getEventType()
+    {
+        return LinkControlOpcode.GROUP_VOICE_CHANNEL_UPDATE_EXPLICIT.getDescription();
+    }
+
+	@Override
+	public String getMessage()
+	{
+		StringBuilder sb = new StringBuilder();
+		
+		sb.append( getMessageStub() );
+		
+		if( isEmergency() )
+		{
+			sb.append( " EMERGENCY" );
+		}
+		if( isEncryptedChannel() )
+		{
+			sb.append( " ENCRYPTED CHANNEL" );
+		}
+
+		
+		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 int getTransmitChannelIdentifier()
+	{
+		return mMessage.getInt( TRANSMIT_IDENTIFIER );
+	}
+	
+    public int getTransmitChannelNumber()
+    {
+    	return mMessage.getInt( TRANSMIT_CHANNEL );
+    }
+    
+    public String getTransmitChannel()
+    {
+    	return getTransmitChannelIdentifier() + "-" + getTransmitChannelNumber();
+    }
+    
+    public int getReceiveChannelIdentifier()
+	{
+		return mMessage.getInt( RECEIVE_IDENTIFIER );
+	}
+	
+    public int getReceiveChannelNumber()
+    {
+    	return mMessage.getInt( RECEIVE_CHANNEL );
+    }
+    
+    public String getReceiveChannel()
+    {
+    	return getReceiveChannelIdentifier() + "-" + getReceiveChannelNumber();
+    }
+    
+    public String getGroupAddress()
+    {
+    	return mMessage.getHex( GROUP_ADDRESS, 4 );
+    }
+    
+	@Override
+    public void setIdentifierMessage( int identifier, IdentifierProvider message )
+    {
+		if( identifier == getTransmitChannelIdentifier() )
+		{
+			mTransmitIdentifierUpdate = message;
+		}
+		if( identifier == getReceiveChannelIdentifier() )
+		{
+			mReceiveIdentifierUpdate = message;
+		}
+    }
+
+	@Override
+    public int[] getIdentifiers()
+    {
+		int[] identifiers = new int[ 2 ];
+		
+		identifiers[ 0 ] = getTransmitChannelIdentifier();
+		identifiers[ 1 ] = getReceiveChannelIdentifier();
+		
+		return identifiers;
+    }
+
+    public long getDownlinkFrequency()
+    {
+    	return calculateDownlink( mTransmitIdentifierUpdate, 
+    			getTransmitChannelNumber() );
+    }
+    
+    public long getUplinkFrequency()
+    {
+    	return calculateUplink( mReceiveIdentifierUpdate, 
+    			getReceiveChannelNumber() );
+    }
+}