Updates pull request from Roman Tsypuk to convert the build system from

ant to gradle.  Removes linux and windows application launch scripts and
produces an executable jar with all resources included.

src/main/java/io/github/dsheirer/source/tuner/MixerTuner.java

@@ -0,0 +1,129 @@
+/*******************************************************************************
+ *     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 io.github.dsheirer.source.tuner;
+
+import io.github.dsheirer.sample.Listener;
+import io.github.dsheirer.sample.adapter.ISampleAdapter;
+import io.github.dsheirer.sample.complex.ComplexBuffer;
+import io.github.dsheirer.sample.complex.ComplexSampleListListener;
+import io.github.dsheirer.source.mixer.ComplexMixer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.sound.sampled.TargetDataLine;
+import java.util.ArrayList;
+
+public abstract class MixerTuner extends Tuner implements Listener<ComplexBuffer>
+{
+	private final static Logger mLog = 
+							LoggerFactory.getLogger( MixerTuner.class );
+
+	protected MixerTunerType mMixerTunerType;
+	protected ComplexMixer mComplexMixer;
+	protected ArrayList<ComplexSampleListListener> mListeners = 
+					new ArrayList<ComplexSampleListListener>();
+	
+	/**
+	 * Wrapper class to add basic Tuner functionality to the ComplexMixer.  
+	 * Subclasses should couple this functionality with a tuner controller class
+	 * to support tuning.
+	 */
+	public MixerTuner( String name,
+					   TunerController tunerController,
+					   MixerTunerType mixerTunerType,
+					   TargetDataLine targetDataLine,
+					   ISampleAdapter sampleAdapter )
+	{
+		super( name, tunerController );
+		
+		mMixerTunerType = mixerTunerType;
+
+        mComplexMixer = new ComplexMixer( targetDataLine, 
+        								  mMixerTunerType.getAudioFormat(),
+        								  name,
+        								  sampleAdapter,
+        								  (Listener<ComplexBuffer>)this );
+	}
+	
+	public MixerTuner( String name,
+					   TunerController tunerController,
+					   MixerTunerDataLine mixerTuner,
+					   ISampleAdapter sampleAdapter )
+	{
+		this( name, 
+			  tunerController,
+			  mixerTuner.getMixerTunerType(), 
+			  mixerTuner.getTargetDataLine(),
+			  sampleAdapter );
+	}
+
+	public void dispose()
+	{
+		mComplexMixer.stop();
+		
+		super.dispose();
+	}
+	
+	public MixerTunerType getMixerTunerType()
+	{
+		return mMixerTunerType;
+	}
+	
+	public TargetDataLine getTargetDataLine()
+	{
+		return mComplexMixer.getTargetDataLine();
+	}
+	
+	/**
+	 * Dispatches the received complex buffers from the mComplexMixer to all
+	 * listeners registered on the parent Tuner class
+	 */
+	@Override
+	public void receive( ComplexBuffer buffer )
+	{
+		super.broadcast( buffer );
+	}
+	
+	/**
+	 * Overrides the parent Tuner class listener management method to allow
+	 * starting the buffer processing thread
+	 */
+	@Override
+    public void addListener( Listener<ComplexBuffer> listener )
+    {
+		super.addListener( listener );
+
+		/* We can call start multiple times -- it ignores additional requests */
+		mComplexMixer.start();
+    }
+
+	/**
+	 * Overrides the parent Tuner class listener management method to allow
+	 * stopping the buffer processing thread when there are no more listeners
+	 */
+	@Override
+    public void removeListener( Listener<ComplexBuffer> listener )
+    {
+		super.removeListener( listener );
+		
+		if( mSampleListeners.isEmpty() )
+		{
+			mComplexMixer.stop();
+		}
+    }
+}