Channel Spectral Display

- Adds Channel Spectrum tab to display FFT of the audio output of the currently selected channel
 - Upgrades to JTransforms 3.0 FFT library
 - Adds three new context menus to main and channel spectral displays:
   -- Baseline - affects the vertical rendering baseline of the FFT
   -- Amplification - affects the vertical height of each FFT bin
   -- Averaging - affects how many FFTs are averaged to produce the display

src/settings/IntegerSetting.java

@@ -0,0 +1,30 @@
+package settings;
+
+import javax.xml.bind.annotation.XmlAttribute;
+
+public class IntegerSetting extends Setting
+{
+	private int mValue;
+	
+	public IntegerSetting()
+	{
+	}
+
+	public IntegerSetting( String name, int value )
+	{
+		super( name );
+		
+		mValue = value;
+	}
+	
+	@XmlAttribute
+	public int getValue()
+	{
+		return mValue;
+	}
+	
+	public void setValue( int value )
+	{
+		mValue = value;
+	}
+}

src/settings/Settings.java

@@ -45,6 +45,7 @@ import source.tuner.rtl.r820t.R820TTunerConfiguration;
 			   FCD1TunerConfiguration.class,
 			   FCD2TunerConfiguration.class,
 			   FileSetting.class,
+			   IntegerSetting.class,
 			   MapViewSetting.class,
 			   MapIcon.class,
 			   R820TTunerConfiguration.class,
@@ -177,6 +178,20 @@ public class Settings
 		
 		return null;
 	}
+
+	public IntegerSetting getIntegerSetting( String name )
+	{
+		for( Setting setting: mSettings )
+		{
+			if( setting instanceof IntegerSetting &&
+				((IntegerSetting)setting).getName().contentEquals( name ) )
+			{
+				return (IntegerSetting)setting;
+			}
+		}
+		
+		return null;
+	}
 	
 	public ColorSetting getColorSetting( ColorSettingName name )
 	{

src/settings/SettingsManager.java

@@ -143,6 +143,33 @@ public class SettingsManager
 		return mSettings.getSetting( name );
 	}
 	
+	public IntegerSetting getIntegerSetting( String name, int defaultValue )
+	{
+		IntegerSetting setting = mSettings.getIntegerSetting( name );
+		
+		if( setting == null )
+		{
+			setting = new IntegerSetting( name, defaultValue );
+			
+			mSettings.addSetting( setting );
+			
+			save();
+		}
+		
+		return setting;
+	}
+
+	public void setIntegerSetting( String name, int value )
+	{
+		IntegerSetting setting = getIntegerSetting( name, value );
+		
+		setting.setValue( value );
+		
+		save();
+		
+		broadcastSettingChange( setting );
+	}
+	
 	/**
 	 * Returns the current setting, or if the setting doesn't exist
 	 * returns a newly created setting with the specified parameters