move the struct of block to queue

app/src/main/cpp/visualizer/block_queue.c

@@ -3,8 +3,6 @@
 //
 #include "block_queue.h"
 #include <stdlib.h>
-#include <libavcodec/avcodec.h>
-
 
 vlc_queue_t *vlc_queue_init(int size) {
     vlc_queue_t *queue = (vlc_queue_t *)(malloc(sizeof(vlc_queue_t)));
@@ -14,7 +12,9 @@ vlc_queue_t *vlc_queue_init(int size) {
     int i;
     queue->packets = (void **)(malloc(sizeof(*queue->packets) * size));
     for (i = 0; i < size; i++) {
-        queue->packets[i] = malloc(sizeof(AVPacket));
+        block_t *packet = malloc(sizeof(block_t));
+        packet->i_nb_samples = 0;
+        queue->packets[i] = packet;
     }
     pthread_mutex_init(&queue->mutex, NULL);
     pthread_cond_init(&queue->cond, NULL);

app/src/main/cpp/visualizer/block_queue.h

@@ -11,6 +11,23 @@
 extern "C" {
 #endif
 
+typedef int64_t vlc_tick_t;
+
+typedef struct FFT_callback {
+    void (*callback)(void*);
+} FFT_callback;
+
+typedef struct block_t {
+    uint8_t    *p_buffer; /** Payload start */
+
+    unsigned    i_nb_samples; /** Used for audio */
+
+    vlc_tick_t  i_pts;
+    vlc_tick_t  i_length;
+
+    FFT_callback fft_callback;
+} block_t;
+
 typedef struct vlc_queue {
     //the size of queue
     int size;

app/src/main/cpp/visualizer/execute_fft.c

@@ -46,8 +46,7 @@
 
 /*static*/ block_t *filter_audio(filter_sys_t *p_sys, block_t *p_in_buf)
 {
-    vlc_queue_push(&p_sys->queue, p_in_buf);
-    return p_in_buf;
+    return vlc_queue_push(&p_sys->queue, p_in_buf);
 }
 
 /*static*/ void close_visualizer(filter_sys_t *p_filter)

app/src/main/cpp/visualizer/execute_fft.h

@@ -19,26 +19,6 @@
 /** Not enough memory */
 #define VLC_ENOMEM         (-2)
 
-typedef int64_t vlc_tick_t;
-
-typedef struct block_t block_t;
-
-typedef struct FFT_callback {
-    void (*callback)(void*);
-} FFT_callback;
-
-struct block_t
-{
-    uint8_t    *p_buffer; /**< Payload start */
-
-    unsigned    i_nb_samples; /* Used for audio */
-
-    vlc_tick_t  i_pts;
-    vlc_tick_t  i_length;
-
-    FFT_callback fft_callback;
-};
-
 typedef struct
 {
     pthread_t thread;