P25 LSM decoder work in progress. Adds a CQPSK decoder based on Max's (KA1RBI) scope.py and gardner loop.

The CQPSK decoder is starting to take shape, but needs more tweaking and testing.  It's not keeping a good lock on strong P25 signals.  I have to add some more features to the intrumentation package to allow me to visualize the internals of the CQPSK decoder so that I can get a better sense of what needs fine tuning.

The CQPSK decoder may work for anyone that wants to sync the repo and run the build script.

src/source/EmptySourceEditor.java

@@ -21,6 +21,8 @@ import javax.swing.JLabel;
 
 import source.config.SourceConfiguration;
 import controller.ResourceManager;
+import controller.channel.Channel;
+import controller.channel.ChannelValidationException;
 
 public class EmptySourceEditor extends SourceEditor
 {

src/source/SourceComponentEditor.java

@@ -21,14 +21,15 @@ package source;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 
-import javax.swing.BorderFactory;
 import javax.swing.DefaultComboBoxModel;
 import javax.swing.JComboBox;
 
 import source.config.SourceConfigFactory;
 import source.config.SourceConfiguration;
+import controller.Editor;
 import controller.channel.AbstractChannelEditor;
 import controller.channel.ChannelNode;
+import controller.channel.ChannelValidationException;
 
 public class SourceComponentEditor extends AbstractChannelEditor
 {
@@ -89,6 +90,11 @@ public class SourceComponentEditor extends AbstractChannelEditor
 
 		reset();
 	}
+    
+    public SourceEditor getSourceEditor()
+    {
+    	return mEditor;
+    }
 
 	public void reset() 
     {

src/source/SourceEditor.java

@@ -20,6 +20,8 @@ package source;
 import source.config.SourceConfiguration;
 import controller.Editor;
 import controller.ResourceManager;
+import controller.channel.Channel;
+import controller.channel.ChannelValidationException;
 
 public abstract class SourceEditor extends Editor
 {

src/source/wave/ComplexWaveSource.java

@@ -23,20 +23,25 @@ import java.io.IOException;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.nio.ShortBuffer;
-import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Iterator;
 
 import javax.sound.sampled.AudioFormat;
 import javax.sound.sampled.AudioInputStream;
 import javax.sound.sampled.AudioSystem;
 import javax.sound.sampled.UnsupportedAudioFileException;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import sample.Broadcaster;
 import sample.Listener;
 import sample.complex.ComplexSample;
 
 public class ComplexWaveSource extends WaveSource
 {
+	private final static Logger mLog = 
+			LoggerFactory.getLogger( ComplexWaveSource.class );
+
 	private boolean mRunning = false;
     private boolean mLoop = false;
 
@@ -51,8 +56,7 @@ public class ComplexWaveSource extends WaveSource
     
     private static int BUFFER_SAMPLE_SIZE = 2000;
 
-    private ArrayList<Listener<ComplexSample>> mListeners = 
-    							new ArrayList<Listener<ComplexSample>>();
+    private Broadcaster<ComplexSample> mBroadcaster = new Broadcaster<ComplexSample>();
 
     /**
      * Single channel (mono) wave file playback source with optional looping
@@ -223,7 +227,7 @@ public class ComplexWaveSource extends WaveSource
 
     		if( broadcast )
     		{
-        		send( new ComplexSample( (float)i, (float)q ) );
+        		send( new ComplexSample( (float)i / 32767.0f, (float)q / 32767.0f ) );
     		}
     		
     		success = true;
@@ -276,12 +280,7 @@ public class ComplexWaveSource extends WaveSource
      */
     private void send( ComplexSample sample )
     {
-        Iterator<Listener<ComplexSample>> it = mListeners.iterator();
-
-        while( it.hasNext() )
-        {
-            it.next().receive( sample );
-        }
+    	mBroadcaster.broadcast( sample );
     }
 
     /**
@@ -289,12 +288,12 @@ public class ComplexWaveSource extends WaveSource
      */
     public void addListener( Listener<ComplexSample> listener )
     {
-        mListeners.add( listener );
+        mBroadcaster.addListener( listener );
     }
 
     public void removeListener( Listener<ComplexSample> listener )
     {
-		mListeners.remove( listener );
+    	mBroadcaster.removeListener( listener );
     }
 
 	@Override