IQ recording file playback partial checkin.

NOTE: only the gui components and settings handling have been implemented.  Actual recording playback is not yet implemented.

Partial checkin of initial P25 decoder development.  

NOTE: P25 decoder is not yet functional.

src/source/tuner/TunerChannelProvider.java

@@ -0,0 +1,28 @@
+package source.tuner;
+
+import java.util.concurrent.RejectedExecutionException;
+
+import source.SourceException;
+import controller.ThreadPoolManager;
+
+public interface TunerChannelProvider
+{
+	/**
+	 * Returns a tuner frequency channel source, tuned to the correct frequency
+	 * 
+	 * @param frequency - desired frequency
+	 * 
+	 * @return - source for 48k sample rate
+	 */
+	public abstract TunerChannelSource getChannel( ThreadPoolManager threadPoolManager,
+		TunerChannel channel ) throws RejectedExecutionException, SourceException;
+
+	/**
+	 * Releases the tuned channel resources
+	 * 
+	 * @param channel - previously obtained tuner channel
+	 */
+	public abstract void releaseChannel( TunerChannelSource source );
+	
+	
+}