From 52e3d9d20df0632ada05cbf5984ed7c485c07ebe Mon Sep 17 00:00:00 2001
From: Denny Sheirer <dennissheirer2002@yahoo.com>
Date: Sat, 19 Jan 2019 10:29:05 +0000
Subject: [PATCH] Adds exception handler to DFT processor to catch
 InterruptedException (#491)

begin thrown by the FFT library on shutdown.
---
 .../dsheirer/spectrum/DFTProcessor.java       | 39 +++++++++++++------
 1 file changed, 27 insertions(+), 12 deletions(-)

diff --git a/src/main/java/io/github/dsheirer/spectrum/DFTProcessor.java b/src/main/java/io/github/dsheirer/spectrum/DFTProcessor.java
index 44958d9b..3429195f 100644
--- a/src/main/java/io/github/dsheirer/spectrum/DFTProcessor.java
+++ b/src/main/java/io/github/dsheirer/spectrum/DFTProcessor.java
@@ -1,18 +1,22 @@
-/*******************************************************************************
- * sdr-trunk
- * Copyright (C) 2014-2018 Dennis Sheirer
+/*
+ * ******************************************************************************
+ * sdrtrunk
+ * Copyright (C) 2014-2019 Dennis Sheirer
  *
- * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
- * License as published by  the Free Software Foundation, either version 3 of the License, or  (at your option) any
- * later version.
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,  but WITHOUT ANY WARRANTY; without even the implied
- * warranty of  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License  along with this program.
- * If not, see <http://www.gnu.org/licenses/>
- *
- ******************************************************************************/
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * *****************************************************************************
+ */
 package io.github.dsheirer.spectrum;
 
 import io.github.dsheirer.dsp.filter.Window;
@@ -241,6 +245,17 @@ public class DFTProcessor implements Listener<ReusableComplexBuffer>, ISourceEve
             //No new data, dispatch the previous samples again
             //no-op
         }
+        catch(Exception e)
+        {
+            if(e instanceof InterruptedException)
+            {
+                mLog.info("FFT Library interrupted exception - this is normal during application shutdown");
+            }
+            else
+            {
+                mLog.error("Error while calculating FFT results", e);
+            }
+        }
     }
 
     /**