P25 work in progress

src/dsp/fsk/Dibit.java

@@ -0,0 +1,58 @@
+package dsp.fsk;
+
+public enum Dibit
+{
+	D01_PLUS_3( false, true,  1, 4 ),
+	D00_PLUS_1( false, false, 0, 0 ),
+	D10_MINUS_1( true, false, 2, 8 ),
+	D11_MINUS_3( true, true,  3, 12 );
+	
+	private boolean mBit1;
+	private boolean mBit2;
+	private int mLowValue;
+	private int mHighValue;
+	
+	private Dibit( boolean bit1, boolean bit2, int lowValue, int highValue )
+	{
+		mBit1 = bit1;
+		mBit2 = bit2;
+		mLowValue = lowValue;
+		mHighValue = highValue;
+	}
+	
+	public boolean getBit1()
+	{
+		return mBit1;
+	}
+	
+	public boolean getBit2()
+	{
+		return mBit2;
+	}
+	
+	public int getLowValue()
+	{
+		return mLowValue;
+	}
+	
+	public int getHighValue()
+	{
+		return mHighValue;
+	}
+	
+	public static Dibit inverted( Dibit symbol )
+	{
+		switch( symbol )
+		{
+			case D10_MINUS_1:
+				return D11_MINUS_3;
+			case D11_MINUS_3:
+				return D01_PLUS_3;
+			case D00_PLUS_1:
+				return D10_MINUS_1;
+			case D01_PLUS_3:
+			default:
+				return D00_PLUS_1;
+		}
+	}
+}