merges master commit 94d85f6 to persist FFT size.

src/spectrum/DFTProcessor.java

@@ -30,6 +30,7 @@ import org.jtransforms.fft.FloatFFT_1D;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import properties.SystemProperties;
 import sample.Buffer;
 import sample.Listener;
 import sample.SampleType;
@@ -61,6 +62,8 @@ public class DFTProcessor implements Listener<ComplexBuffer>,
 	private ScheduledExecutorService mScheduler = Executors
 			.newScheduledThreadPool( 1, new NamingThreadFactory( "spectrum dft" ) );	
 	
+	public static final String FRAME_RATE_PROPERTY = "spectral.display.frame.rate";
+	
 	private DFTSize mDFTSize = DFTSize.FFT04096;
 	private DFTSize mNewDFTSize = DFTSize.FFT04096;
 	
@@ -90,6 +93,15 @@ public class DFTProcessor implements Listener<ComplexBuffer>,
 	{
 		setSampleType( sampleType );
 		setFrameRate( 20 );
+		
+		loadSettings();
+	}
+	
+	private void loadSettings()
+	{
+		int frameRate = SystemProperties.getInstance().get( FRAME_RATE_PROPERTY, 20 );
+		
+		setFrameRate( frameRate );
 	}
 	
 	public void dispose()
@@ -170,6 +182,11 @@ public class DFTProcessor implements Listener<ComplexBuffer>,
 		}
 
 		mFrameRate = framesPerSecond;
+		
+		SystemProperties properties = SystemProperties.getInstance();
+		
+		properties.set( FRAME_RATE_PROPERTY, String.valueOf( mFrameRate ) );
+		properties.save();
 
 		calculateConsumptionRate();
 

src/spectrum/SpectralDisplayPanel.java

@@ -54,6 +54,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import playlist.PlaylistManager;
+import properties.SystemProperties;
 import sample.Listener;
 import sample.SampleType;
 import sample.complex.ComplexBuffer;
@@ -99,6 +100,7 @@ public class SpectralDisplayPanel extends JPanel
 
 	private static DecimalFormat sCURSOR_FORMAT = new DecimalFormat( "000.00000" );
 
+	public static final String FFT_SIZE_PROPERTY = "spectral.display.dft.size";
 	public static final int NO_ZOOM = 0;
 	public static final int MAX_ZOOM = 6;
 
@@ -155,6 +157,36 @@ public class SpectralDisplayPanel extends JPanel
     	}
     	
 		init();
+		
+		loadSettings();
+    }
+    
+    private void loadSettings()
+    {
+    	SystemProperties properties = SystemProperties.getInstance();
+    	
+    	String rawSize = properties.get( FFT_SIZE_PROPERTY, DFTSize.FFT04096.name() );
+    	
+    	DFTSize size = null;
+    	
+    	if( rawSize != null )
+    	{
+    		try
+    		{
+    			size = DFTSize.valueOf( rawSize );
+    		}
+    		catch( Exception e )
+    		{
+    			//Do nothing
+    		}
+    	}
+    	
+    	if( size == null )
+    	{
+    		size = DFTSize.FFT04096;
+    	}
+    	
+    	setDFTSize( size );
     }
     
     public void dispose()
@@ -199,6 +231,11 @@ public class SpectralDisplayPanel extends JPanel
 		mDFTProcessor.setDFTSize( size );
 		mOverlayPanel.setDFTSize( size );
 		mDFTSize = size;
+		
+		SystemProperties properties = SystemProperties.getInstance();
+		
+		properties.set( FFT_SIZE_PROPERTY, size.name() );
+		properties.save();
 
 		setZoom( 0, 0, 0 );
 	}

src/spectrum/WaterfallPanel.java

@@ -121,6 +121,8 @@ public class WaterfallPanel extends JPanel implements DFTResultsListener,
         mMemoryImageSource.setAnimated( true );
 
         mWaterfallImage = createImage( mMemoryImageSource );
+        
+        repaint();
 	}
 	
 	/**