39 - WIP - incorporates the latest P25 C4FM decoder from master and

updates the LSM decoder to follow the same design pattern.  Adds LSM
decoder support to the demodulator viewer application.  The current
symbol timing gain for LSM is set too high -- is using the C4FM gain
and causes too much fluctuation in the timing error.

src/main/java/io/github/dsheirer/sample/complex/reusable/ReusableBufferQueue.java

@@ -38,6 +38,11 @@ public class ReusableBufferQueue implements IReusableBufferDisposedListener
 
     }
 
+    public void dispose()
+    {
+        mReusableBufferQueue.clear();
+    }
+
     /**
      * Implements buffer disposed listener interface.  Disposed (ie user count = 0) buffers will automatically callback
      * to this method to indicate when they are disposed.

src/main/java/io/github/dsheirer/sample/complex/reusable/ReusableComplexBuffer.java

@@ -30,6 +30,10 @@ public class ReusableComplexBuffer extends ComplexBuffer
     /**
      * Creates a reusable, timestamped complex buffer using the specified time in milliseconds.
      *
+     * NOTE: reusability of this buffer requires strict user count tracking.  Each component that receives this
+     * buffer should not modify the buffer contents.  Each component should also increment the user count before
+     * sending this buffer to another component and should decrement the user count when finished using this buffer.
+     *
      * @param disposalListener to be notified when all consumers/users are finished using the buffer
      * @param samples of data
      * @param timestamp in millis for the buffer
@@ -46,6 +50,10 @@ public class ReusableComplexBuffer extends ComplexBuffer
     /**
      * Constructs a timestamped complex buffer using the current system time in milliseconds.
      *
+     * NOTE: reusability of this buffer requires strict user count tracking.  Each component that receives this
+     * buffer should not modify the buffer contents.  Each component should also increment the user count before
+     * sending this buffer to another component and should decrement the user count when finished using this buffer.
+     *
      * @param disposalListener to be notified when all consumers are finished using the buffer
      * @param samples of data
      */
@@ -82,6 +90,11 @@ public class ReusableComplexBuffer extends ComplexBuffer
         return mTimestamp;
     }
 
+    public void setTimestamp(long timestamp)
+    {
+        mTimestamp = timestamp;
+    }
+
     /**
      * Reloads this buffer by copying the sample array into this buffer.  Internal buffer length will be automatically
      * resized to fit the new sample array length.