diff --git a/app/CMakeLists.txt b/app/CMakeLists.txt
index 4edbec1..8088e62 100644
--- a/app/CMakeLists.txt
+++ b/app/CMakeLists.txt
@@ -35,8 +35,9 @@ add_library( # Sets the name of the library.
             src/main/cpp/fast_start.c
             src/main/cpp/ffprobe_cmd.cpp
             src/main/cpp/visualizer/fft.c
+        src/main/cpp/visualizer/fixed_fft.c
             src/main/cpp/visualizer/block_queue.c
-            src/main/cpp/visualizer/execute_fft.c
+        src/main/cpp/visualizer/execute_fft.c
             src/main/cpp/visualizer/window.c
         )
 
diff --git a/app/src/main/cpp/visualizer/execute_fft.c b/app/src/main/cpp/visualizer/execute_fft.c
index e7b4e51..54dbe45 100644
--- a/app/src/main/cpp/visualizer/execute_fft.c
+++ b/app/src/main/cpp/visualizer/execute_fft.c
@@ -23,9 +23,6 @@ int open_visualizer(filter_sys_t *p_sys)
     p_sys->i_prev_nb_samples = 0;
     p_sys->p_prev_s16_buff = NULL;
 
-    p_sys->f_rotationAngle = 0;
-    p_sys->f_rotationIncrement = ROTATION_INCREMENT;
-
     window_param *w_param = (window_param*) malloc(sizeof(window_param));
     p_sys->wind_param = *w_param;
 
diff --git a/app/src/main/cpp/visualizer/execute_fft.h b/app/src/main/cpp/visualizer/execute_fft.h
index 1ab582b..e1c7940 100644
--- a/app/src/main/cpp/visualizer/execute_fft.h
+++ b/app/src/main/cpp/visualizer/execute_fft.h
@@ -16,30 +16,23 @@ extern "C" {
 #include "fft.h"
 #include "window.h"
 
-#ifdef __cplusplus
-}
-#endif
-
 typedef struct
 {
-pthread_t thread;
-vlc_queue_t queue;
-bool dead;
-int i_channels;
-int i_prev_nb_samples;
-int16_t *p_prev_s16_buff;
-
-float f_rotationAngle;
-float f_rotationIncrement;
-
-/* FFT window parameters */
-window_param wind_param;
-
-uint8_t *data;
-int data_size;
-int nb_samples;
-int8_t *output;
-int out_samples;
+    pthread_t thread;
+    vlc_queue_t queue;
+    bool dead;
+    int i_channels;
+    int i_prev_nb_samples;
+    int16_t *p_prev_s16_buff;
+
+    /* FFT window parameters */
+    window_param wind_param;
+
+    uint8_t *data;
+    int data_size;
+    int nb_samples;
+    int8_t *output;
+    int out_samples;
 } filter_sys_t;
 
 static void *fft_thread(void *);
@@ -58,4 +51,8 @@ void release_visualizer(filter_sys_t *p_sys);
 
 int ensure_memory(filter_sys_t *fft_filter, int nb_samples);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif //EXECUTE_FFT_H