P25 - adds support from motorola patch groups described by PiccoIntegra in RR post: http://forums.radioreference.com/trunking-control-channel-decoding/308138-question-about-t-g-patching-p25.html

2026-11-14 09:37:36 -05:00 · 2015-02-20 12:58:41 +00:00
parent ebee420478
commit a0b38afee1
10 changed files with 479 additions and 69 deletions
--- a/src/decode/p25/message/tsbk/motorola/PatchGroupVoiceChannelGrant.java
+++ b/src/decode/p25/message/tsbk/motorola/PatchGroupVoiceChannelGrant.java
@@ -0,0 +1,149 @@
+package decode.p25.message.tsbk.motorola;
+
+import alias.AliasList;
+import bits.BinaryMessage;
+import decode.p25.message.IdentifierProvider;
+import decode.p25.message.IdentifierReceiver;
+import decode.p25.reference.DataUnitID;
+
+public class PatchGroupVoiceChannelGrant extends MotorolaTSBKMessage
+												  implements IdentifierReceiver
+{
+    /* Service Options */
+    public static final int EMERGENCY_FLAG = 80;
+    public static final int ENCRYPTED_CHANNEL_FLAG = 81;
+    public static final int DUPLEX_MODE = 82;
+    public static final int SESSION_MODE = 83;
+    
+    public static final int[] PRIORITY = { 85,86,87 };
+	public static final int[] CHANNEL = { 88,89,90,91 };
+	public static final int[] IDENTIFIER = { 92,93,94,95,96,97,98,99,100,101,
+		102,103 };
+	public static final int[] PATCH_GROUP_ADDRESS = { 104,105,106,107,108,109,
+		110,111,112,113,114,115,116,117,118,119 };
+	public static final int[] SOURCE_ADDRESS = { 120,121,122,123,124,125,126,
+		127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143 };
+
+    private IdentifierProvider mIdentifierUpdate;
+
+    public PatchGroupVoiceChannelGrant( BinaryMessage message, DataUnitID duid,
+            AliasList aliasList )
+    {
+	    super( message, duid, aliasList );
+    }
+
+	@Override
+    public String getEventType()
+    {
+	    return MotorolaOpcode.PATCH_GROUP_CHANNEL_GRANT.getLabel();
+    }
+
+	@Override
+    public String getMessage()
+    {
+		StringBuilder sb = new StringBuilder();
+
+		sb.append( getMessageStub() );
+
+		if( isEmergency() )
+		{
+			sb.append( " EMERGENCY" );
+		}
+		
+		sb.append( " PATCH GROUP:" );
+		sb.append( getPatchGroupAddress() );
+		sb.append( " FROM:" );
+		sb.append( getSourceAddress() );
+		sb.append( " PRI:" );
+		sb.append( getPriority() );
+
+		sb.append( " CHAN:" );
+        sb.append( getChannelIdentifier() + "-" + getChannelNumber() );
+        
+        sb.append( " DN:" + getDownlinkFrequency() );
+        
+        sb.append( " UP:" + getUplinkFrequency() );
+		
+	    return sb.toString();
+    }
+	
+    public String getPatchGroupAddress()
+    {
+        return mMessage.getHex( PATCH_GROUP_ADDRESS, 4 );
+    }
+	
+    public String getSourceAddress()
+    {
+        return mMessage.getHex( SOURCE_ADDRESS, 6 );
+    }
+    
+    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;
+    }
+    
+    /**
+     * 1 = Lowest, 4 = Default, 7 = Highest
+     */
+    public int getPriority()
+    {
+        return mMessage.getInt( PRIORITY );
+    }
+    
+    public int getChannelIdentifier()
+    {
+        return mMessage.getInt( IDENTIFIER );
+    }
+    
+    public int getChannelNumber()
+    {
+        return mMessage.getInt( CHANNEL );
+    }
+
+    public String getChannel()
+    {
+    	return getChannelIdentifier() + "-" + getChannelNumber();
+    }
+
+	@Override
+    public void setIdentifierMessage( int identifier, IdentifierProvider message )
+    {
+		mIdentifierUpdate = message;
+    }
+
+	@Override
+    public int[] getIdentifiers()
+    {
+		int[] identifiers = new int[ 1 ];
+		identifiers[ 0 ] = getChannelIdentifier();
+		
+		return identifiers;
+    }
+    
+    public long getDownlinkFrequency()
+    {
+    	return calculateDownlink( mIdentifierUpdate, getChannelNumber() );
+    }
+    
+    public long getUplinkFrequency()
+    {
+    	return calculateUplink( mIdentifierUpdate, getChannelNumber() );
+    }
+    
+}