P25 - fix for encrypted calls to mute audio.

src/controller/state/ChannelState.java

@@ -602,10 +602,7 @@ public abstract class ChannelState implements Listener<Message>
 	        @Override
 	        public boolean canChangeTo( State state )
 	        {
-		        return state == CALL ||
+		        return state == FADE;
-		        	   state == CONTROL ||
-			           state == DATA ||
-			           state == FADE;
 	        }
         },
         CONTROL( "CONTROL" )

src/decode/p25/P25ChannelState.java

@@ -820,12 +820,6 @@ public class P25ChannelState extends ChannelState
 	
 	private void processLDU( LDUMessage ldu )
 	{
-		/* Send audio frames to the audio output */
-		if( mAudioOutput != null )
-		{
-			mAudioOutput.receive( ldu );
-		}
-		
 		State state = getState();
 
 		/* Only change the state for valid ldus */
@@ -833,6 +827,12 @@ public class P25ChannelState extends ChannelState
 		{
 			state = ldu.isEncrypted() ? State.ENCRYPTED : State.CALL;
 		}
+
+		/* Send audio frames to the audio output */
+		if( mAudioOutput != null && state != State.ENCRYPTED )
+		{
+			mAudioOutput.receive( ldu );
+		}
 		
 		if( ldu instanceof LDU1Message )
 		{

src/decode/p25/P25MessageFramer.java

@@ -47,8 +47,7 @@ public class P25MessageFramer implements Listener<Dibit>
 
 	/* Costas Loop phase lock error correction values.  A phase lock error of
 	 * 90 degrees requires a correction of 1/4 of the symbol rate (1200Hz).  An 
-	 * error of 180 degrees requires a correction of 1/2 of the symbol rate
+	 * error of 180 degrees requires a correction of 1/2 of the symbol rate */
-	 * (2400Hz) */
 	public static final double SYMBOL_FREQUENCY = 2.0d * Math.PI * 4800.0d / 48000.0d;
 	public static final double PHASE_CORRECTION_90_DEGREES = SYMBOL_FREQUENCY / 4.0d; 
 	public static final double PHASE_CORRECTION_180_DEGREES = SYMBOL_FREQUENCY / 2.0d;