From 946b43a504b7e6c225d63d6b7853b73e46c58412 Mon Sep 17 00:00:00 2001
From: Clayton Smith <argilo@gmail.com>
Date: Sat, 15 Jan 2022 18:01:13 -0500
Subject: [PATCH] Don't lock the buffer mutex while changing FFT size

---
 resources/news.txt | 5 +++++
 src/dsp/rx_fft.cpp | 4 ----
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/resources/news.txt b/resources/news.txt
index 317cf047d..e2fb1bca0 100644
--- a/resources/news.txt
+++ b/resources/news.txt
@@ -1,4 +1,9 @@
 
+    2.15.4: In progress...
+
+     FIXED: Audio is delayed when FFT size is changed.
+
+
     2.15.3: Released January 15, 2022
 
      FIXED: RDS receiver skips some messages.
diff --git a/src/dsp/rx_fft.cpp b/src/dsp/rx_fft.cpp
index 12d533b50..3534f7a4e 100644
--- a/src/dsp/rx_fft.cpp
+++ b/src/dsp/rx_fft.cpp
@@ -160,8 +160,6 @@ void rx_fft_c::apply_window(unsigned int size)
 /*! \brief Update circular buffer and FFT object. */
 void rx_fft_c::set_params()
 {
-    std::lock_guard<std::mutex> lock(d_mutex);
-
     /* reset window */
     int wintype = d_wintype; // FIXME: would be nicer with a window_reset()
     d_wintype = -1;
@@ -365,8 +363,6 @@ void rx_fft_f::set_fft_size(unsigned int fftsize)
 {
     if (fftsize != d_fftsize)
     {
-        std::lock_guard<std::mutex> lock(d_mutex);
-
         d_fftsize = fftsize;
 
         /* reset window */