Initial code check in continued

src/dsp/FloatToBinarySlicer.java

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+/*******************************************************************************
+ *     SDR Trunk 
+ *     Copyright (C) 2014 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 dsp;
+
+import sample.Listener;
+import buffer.FloatCircularAveragingBuffer;
+
+public class FloatToBinarySlicer implements Listener<Float>
+											
+{
+	private FloatCircularAveragingBuffer mAveragingBuffer;
+	private Listener<Boolean> mListener;
+
+	/**
+	 * Provides binary slicing of the stream of floats, using a circular buffer
+	 * to calculate a running average, then basing the slice decision based
+	 * on the oldest sample leaving the circular buffer, compared to the running
+	 * average.
+	 * 
+	 * Designed to operate with a DC bias inherent in the sample stream.
+	 * 
+	 * Tracks a long average and a short average to compensate for drifting 
+	 * transmitters.  
+	 * 
+	 * The long buffer compensates for long strings of ones or 
+	 * zeros.  Set the long buffer size to a few baud periods longer than the
+	 * longest anticipated string of like symbols.
+	 * 
+	 */
+	public FloatToBinarySlicer( int bufferSize, int sampleCountForAveraging )
+	{
+		mAveragingBuffer = new FloatCircularAveragingBuffer( bufferSize, 
+													sampleCountForAveraging );
+	}
+
+	@Override
+    public void receive( Float newestSample )
+    {
+		float oldestSample = mAveragingBuffer.get( newestSample );
+		
+		//Dispatch the decision
+		mListener.receive( oldestSample > mAveragingBuffer.getAverage()  );
+    }
+
+    public void setListener( Listener<Boolean> listener )
+    {
+		mListener = listener;
+    }
+
+    public void clearListener()
+    {
+		mListener = null;
+    }
+}