P25 work in progress - final check-in of channel state and activity summary processing of TSBK and PDU messages and event generation.

src/decode/p25/reference/Encryption.java

@@ -13,6 +13,7 @@ public enum Encryption
 	TRIPLE_DES_2_KEY( 0x82 ),
 	TRIPLE_DES_3_KEY( 0x83 ),
 	AES( 0x84 ),
+	ADP( 0xAA ),
 	UNKNOWN( -1 );
 	
 	private int mValue;

src/decode/p25/reference/ExtendedFunction.java

@@ -0,0 +1,71 @@
+package decode.p25.reference;
+
+public enum ExtendedFunction
+{
+	RADIO_CHECK( 0x0000, "RADIO CHECK" ),
+	RADIO_DETACH( 0x007D, "RADIO DETACH" ),
+	RADIO_UNINHIBIT( 0x007E, "RADIO UNINHIBIT" ),
+	RADIO_INHIBIT( 0x007F, "RADIO INHIBIT" ),
+	RADIO_CHECK_ACK( 0x0080, "RADIO CHECK ACK" ),
+	RADIO_DETACH_ACK( 0x00FD, "RADIO DETACH ACK" ),
+	RADIO_UNINHIBIT_ACK( 0x00FE, "RADIO UNINHIBIT ACK" ),
+	RADIO_INHIBIT_ACK( 0x00FF, "RADIO INHIBIT ACK" ),
+	
+	GROUP_CONTROL_COMMAND( 0x0100, "GROUP CONTROL COMMAND" ),
+	UNIT_DYNAMIC_COMMAND( 0x0200, "UNIT DYNAMIC COMMAND" ),
+	GROUP_DYNAMIC_COMMAND( 0x0300, "GROUP DYNAMIC COMMAND" ),
+	
+	UNKNOWN( -1, "UNKNOWN" );
+
+	private int mFunction;
+	private String mLabel;
+	
+	private ExtendedFunction( int function, String label )
+	{
+		mFunction = function;
+		mLabel = label;
+	}
+	
+	public String getLabel()
+	{
+		return mLabel;
+	}
+	
+	public static ExtendedFunction fromValue( int function )
+	{
+		switch( function )
+		{
+			case 0x0000:
+				return RADIO_CHECK;
+			case 0x007D:
+				return RADIO_DETACH;
+			case 0x007E:
+				return RADIO_UNINHIBIT;
+			case 0x007F:
+				return RADIO_INHIBIT;
+			case 0x0080:
+				return RADIO_CHECK_ACK;
+			case 0x00FD:
+				return RADIO_DETACH_ACK;
+			case 0x00FE:
+				return RADIO_UNINHIBIT_ACK;
+			case 0x00FF:
+				return RADIO_INHIBIT_ACK;
+		}
+		
+		if( ( function & 0x0100 ) == 0x0100 )
+		{
+			return GROUP_CONTROL_COMMAND;
+		}
+		if( ( function & 0x0200 ) == 0x0200 )
+		{
+			return UNIT_DYNAMIC_COMMAND;
+		}
+		if( ( function & 0x0300 ) == 0x0300 )
+		{
+			return GROUP_DYNAMIC_COMMAND;
+		}
+
+		return UNKNOWN;
+	}
+}

src/decode/p25/reference/P25NetworkCallsign.java

@@ -0,0 +1,48 @@
+package decode.p25.reference;
+
+public class P25NetworkCallsign
+{
+	public static final String[] RADIX_50 =  new String[] 
+			{ " ", "A", "B", "C", "D", "E", "F", "G", 
+		      "H", "I", "J", "K", "L", "M", "N", "O", 
+		      "P", "Q", "R", "S", "T", "U", "V", "W", 
+		      "X", "Y", "Z", "$", ".", "?", "0", "1", 
+		      "2", "3", "4", "5", "6", "7", "8", "9" };
+	/**
+	 * Decodes the string callsign from which the WACN and System identifiers
+	 * were derived.
+	 * 
+	 * Based on code by Eric Carlson at:
+	 * http://www.ericcarlson.net/project-25-callsign.html
+	 * 
+	 * @param wacn
+	 * @param systemID
+	 * @return
+	 */
+	public static String getCallsign( int wacn, int systemID )
+	{
+		int n1 = wacn / 16;
+		int n2 = 4096 * ( wacn % 16 ) + systemID;
+
+		StringBuilder sb = new StringBuilder();
+		
+		sb.append( getLetter( (int)( n1 / 1600 ) ) );
+		sb.append( getLetter( (int)( ( n1 / 40 ) % 40 ) ) );
+		sb.append( getLetter( (int)( n1 % 40 ) ) );
+		sb.append( getLetter( (int)( n2 / 1600 ) ) );
+		sb.append( getLetter( (int)( ( n2 / 40 ) % 40 ) ) );
+		sb.append( getLetter( (int)( n2 % 40 ) ) );
+
+		return sb.toString();
+	}
+	
+	private static String getLetter( int value )
+	{
+		if( 0 <= value && value < 40 )
+		{
+			return RADIX_50[ value ];
+		}
+		
+		return " ";
+	}
+}