diff --git a/app/src/main/cpp/visualizer/execute_fft.c b/app/src/main/cpp/visualizer/execute_fft.c
index ab0fe77..7271b89 100644
--- a/app/src/main/cpp/visualizer/execute_fft.c
+++ b/app/src/main/cpp/visualizer/execute_fft.c
@@ -38,7 +38,7 @@ static inline block_t *block_Duplicate(const block_t *p_block)
     return p_dup;
 }
 
-/*static*/ int Open(filter_sys_t *p_sys)
+/*static*/ int open_visualizer(filter_sys_t *p_sys)
 {
     if (p_sys == NULL)
         return VLC_ENOMEM;
@@ -67,7 +67,7 @@ static inline block_t *block_Duplicate(const block_t *p_block)
 //        return VLC_ENOMEM;
 //    }
 
-    pthread_create (&p_sys->thread, NULL, Thread, p_sys);
+    pthread_create (&p_sys->thread, NULL, fft_thread, p_sys);
 
     return VLC_SUCCESS;
 }
@@ -78,7 +78,7 @@ static inline block_t *block_Duplicate(const block_t *p_block)
     return p_in_buf;
 }
 
-/*static*/ void Close(filter_sys_t *p_filter)
+/*static*/ void close_visualizer(filter_sys_t *p_filter)
 {
     filter_sys_t *p_sys = p_filter;
 
@@ -90,7 +90,7 @@ static inline block_t *block_Duplicate(const block_t *p_block)
     free(p_sys->p_prev_s16_buff);
 }
 
-static void *Thread(void *p_data)
+static void *fft_thread(void *p_data)
 {
     filter_sys_t *p_sys = (filter_sys_t*)p_data;
     block_t *block;
diff --git a/app/src/main/cpp/visualizer/execute_fft.h b/app/src/main/cpp/visualizer/execute_fft.h
index bb1aae2..1b13db5 100644
--- a/app/src/main/cpp/visualizer/execute_fft.h
+++ b/app/src/main/cpp/visualizer/execute_fft.h
@@ -49,7 +49,6 @@ struct block_t
 
 typedef struct
 {
-//    vlc_thread_t thread;
     pthread_t thread;
 
     /* Audio data */
@@ -66,12 +65,12 @@ typedef struct
     window_param wind_param;
 } filter_sys_t;
 
-static void *Thread(void *);
+static void *fft_thread(void *);
 
-/*static*/ int Open(filter_sys_t *p_sys);
+/*static*/ int open_visualizer(filter_sys_t *p_sys);
 
 /*static*/ block_t *filter_audio(filter_sys_t *p_sys, block_t *p_in_buf);
 
-/*static*/ void Close(filter_sys_t *p_filter);
+/*static*/ void close_visualizer(filter_sys_t *p_filter);
 
 #endif //PLAYER_CORE_RUN_FFT_H
diff --git a/app/src/main/cpp/visualizer/queue.c b/app/src/main/cpp/visualizer/queue.c
index 1a85935..5b2ef7a 100644
--- a/app/src/main/cpp/visualizer/queue.c
+++ b/app/src/main/cpp/visualizer/queue.c
@@ -132,7 +132,6 @@ void *vlc_queue_Dequeue(vlc_queue_t *q)
     void *entry;
 
     vlc_queue_Lock(q);
-//    vlc_testcancel();
 
     while (vlc_queue_IsEmpty(q))
         vlc_queue_Wait(q);
diff --git a/app/src/main/cpp/visualizer/vlc_queue.h b/app/src/main/cpp/visualizer/vlc_queue.h
index 7453ae1..920d942 100644
--- a/app/src/main/cpp/visualizer/vlc_queue.h
+++ b/app/src/main/cpp/visualizer/vlc_queue.h
@@ -46,9 +46,7 @@ typedef struct vlc_queue
     struct vlc_queue_entry *first;
     struct vlc_queue_entry **lastp;
     ptrdiff_t next_offset;
-//    vlc_mutex_t lock;
     pthread_mutex_t lock;
-//    vlc_cond_t wait;
     pthread_cond_t wait;
 } vlc_queue_t;