From eeb243ea7edce7be3ed84ef619704077e95213f0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kacper=20Michaj=C5=82ow?= <kasper93@gmail.com>
Date: Sun, 1 Nov 2020 00:45:19 +0100
Subject: [PATCH] Use namepsace instead empty class

---
 sdrbase/CMakeLists.txt    | 1 +
 sdrbase/dsp/firfilter.cpp | 7 ++++++-
 sdrbase/dsp/firfilter.h   | 5 ++---
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/sdrbase/CMakeLists.txt b/sdrbase/CMakeLists.txt
index ab08c08ab..167cc445c 100644
--- a/sdrbase/CMakeLists.txt
+++ b/sdrbase/CMakeLists.txt
@@ -270,6 +270,7 @@ set(sdrbase_HEADERS
     dsp/inthalfbandfiltersti.h
     dsp/kissfft.h
     dsp/kissengine.h
+    dsp/firfilter.h
     dsp/mimochannel.h
     dsp/misc.h
     dsp/movingaverage.h
diff --git a/sdrbase/dsp/firfilter.cpp b/sdrbase/dsp/firfilter.cpp
index 1ab072b8d..ef3092583 100644
--- a/sdrbase/dsp/firfilter.cpp
+++ b/sdrbase/dsp/firfilter.cpp
@@ -18,7 +18,10 @@
 
 #include "firfilter.h"
 
-void FirFilterGenerators::generateLowPassFilter(int nTaps, double sampleRate, double cutoff, std::vector<Real> &taps)
+namespace FirFilterGenerators
+{
+
+void generateLowPassFilter(int nTaps, double sampleRate, double cutoff, std::vector<Real> &taps)
 {
     if (!(nTaps & 1))
     {
@@ -50,3 +53,5 @@ void FirFilterGenerators::generateLowPassFilter(int nTaps, double sampleRate, do
         taps[i] *= 0.42 + 0.5 * cos((2.0 * M_PI * n) / nTaps) + 0.08 * cos((4.0 * M_PI * n) / nTaps);
     }
 }
+
+}
diff --git a/sdrbase/dsp/firfilter.h b/sdrbase/dsp/firfilter.h
index be400a68e..0ba6334a5 100644
--- a/sdrbase/dsp/firfilter.h
+++ b/sdrbase/dsp/firfilter.h
@@ -23,10 +23,9 @@
 #include "dsp/dsptypes.h"
 #include "export.h"
 
-class SDRBASE_API FirFilterGenerators
+namespace FirFilterGenerators
 {
-public:
-    static void generateLowPassFilter(int nTaps, double sampleRate, double cutoff, std::vector<Real> &taps);
+    SDRBASE_API void generateLowPassFilter(int nTaps, double sampleRate, double cutoff, std::vector<Real> &taps);
 };
 
 template <class Type>