[WIP] Creates a new AFSK-1200 correlation decoder and updates the

Fleetsync II decoder to use it.  Adds instrumented version of the decoder
and a new Fleetsync2 FX pane to the DemodulatorViewerFX tool.

Note: the remaining AFSK-1200 based decoders will all be ported to use
this new AFSK1200 decoder (MDC1200, Tait1200, LowJack1200).

src/main/java/io/github/dsheirer/dsp/afsk/AFSK1200DecoderInstrumented.java

@@ -0,0 +1,55 @@
+/*******************************************************************************
+ * sdr-trunk
+ * Copyright (C) 2014-2018 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by  the Free Software Foundation, either version 3 of the License, or  (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful,  but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License  along with this program.
+ * If not, see <http://www.gnu.org/licenses/>
+ *
+ ******************************************************************************/
+package io.github.dsheirer.dsp.afsk;
+
+import io.github.dsheirer.sample.Broadcaster;
+import io.github.dsheirer.sample.Listener;
+
+public class AFSK1200DecoderInstrumented extends AFSK1200Decoder
+{
+    private Broadcaster<Boolean> mSymbolBroadcaster = new Broadcaster<>();
+
+    public AFSK1200DecoderInstrumented(boolean invertOutput)
+    {
+        super(new AFSKSampleBufferInstrumented(SAMPLES_PER_SYMBOL, TIMING_ERROR_GAIN),
+            new AFSKTimingErrorDetectorInstrumented(SAMPLES_PER_SYMBOL), Output.NORMAL);
+    }
+
+    public AFSKSampleBufferInstrumented getSampleBuffer()
+    {
+        return (AFSKSampleBufferInstrumented)mSampleBuffer;
+    }
+
+    public AFSKTimingErrorDetectorInstrumented getErrorDetector()
+    {
+        return (AFSKTimingErrorDetectorInstrumented)mTimingErrorDetector;
+    }
+
+    protected void dispatch(boolean symbol)
+    {
+        if(mMessageFramer != null)
+        {
+            mMessageFramer.receive(mNormalOutput ? symbol : !symbol);
+        }
+
+        mSymbolBroadcaster.broadcast(symbol);
+    }
+
+    public void addListener(Listener<Boolean> listener)
+    {
+        mSymbolBroadcaster.addListener(listener);
+    }
+}