diff --git a/libavformat/udp.c b/libavformat/udp.c
index 83c042d079..1737aee1c2 100644
--- a/libavformat/udp.c
+++ b/libavformat/udp.c
@@ -98,7 +98,7 @@ typedef struct UDPContext {
 
     /* Circular Buffer variables for use in UDP receive code */
     int circular_buffer_size;
-    AVFifoBuffer *fifo;
+    AVFifo *fifo;
     int circular_buffer_error;
     int64_t bitrate; /* number of bits to send per second */
     int64_t burst_bits;
@@ -500,7 +500,7 @@ static void *circular_buffer_task_rx( void *_URLContext)
             continue;
         AV_WL32(s->tmp, len);
 
-        if(av_fifo_space(s->fifo) < len + 4) {
+        if (av_fifo_can_write(s->fifo) < len + 4) {
             /* No Space left */
             if (s->overrun_nonfatal) {
                 av_log(h, AV_LOG_WARNING, "Circular buffer overrun. "
@@ -514,7 +514,7 @@ static void *circular_buffer_task_rx( void *_URLContext)
                 goto end;
             }
         }
-        av_fifo_generic_write(s->fifo, s->tmp, len+4, NULL);
+        av_fifo_write(s->fifo, s->tmp, len + 4);
         pthread_cond_signal(&s->cond);
     }
 
@@ -548,22 +548,22 @@ static void *circular_buffer_task_tx( void *_URLContext)
         uint8_t tmp[4];
         int64_t timestamp;
 
-        len = av_fifo_size(s->fifo);
+        len = av_fifo_can_read(s->fifo);
 
         while (len<4) {
             if (s->close_req)
                 goto end;
             pthread_cond_wait(&s->cond, &s->mutex);
-            len = av_fifo_size(s->fifo);
+            len = av_fifo_can_read(s->fifo);
         }
 
-        av_fifo_generic_read(s->fifo, tmp, 4, NULL);
+        av_fifo_read(s->fifo, tmp, 4);
         len = AV_RL32(tmp);
 
         av_assert0(len >= 0);
         av_assert0(len <= sizeof(s->tmp));
 
-        av_fifo_generic_read(s->fifo, s->tmp, len, NULL);
+        av_fifo_read(s->fifo, s->tmp, len);
 
         pthread_mutex_unlock(&s->mutex);
 
@@ -906,7 +906,7 @@ static int udp_open(URLContext *h, const char *uri, int flags)
 
     if ((!is_output && s->circular_buffer_size) || (is_output && s->bitrate && s->circular_buffer_size)) {
         /* start the task going */
-        s->fifo = av_fifo_alloc(s->circular_buffer_size);
+        s->fifo = av_fifo_alloc2(s->circular_buffer_size, 1, 0);
         if (!s->fifo) {
             ret = AVERROR(ENOMEM);
             goto fail;
@@ -943,7 +943,7 @@ static int udp_open(URLContext *h, const char *uri, int flags)
  fail:
     if (udp_fd >= 0)
         closesocket(udp_fd);
-    av_fifo_freep(&s->fifo);
+    av_fifo_freep2(&s->fifo);
     ff_ip_reset_filters(&s->filters);
     return ret;
 }
@@ -970,19 +970,19 @@ static int udp_read(URLContext *h, uint8_t *buf, int size)
     if (s->fifo) {
         pthread_mutex_lock(&s->mutex);
         do {
-            avail = av_fifo_size(s->fifo);
+            avail = av_fifo_can_read(s->fifo);
             if (avail) { // >=size) {
                 uint8_t tmp[4];
 
-                av_fifo_generic_read(s->fifo, tmp, 4, NULL);
+                av_fifo_read(s->fifo, tmp, 4);
                 avail = AV_RL32(tmp);
                 if(avail > size){
                     av_log(h, AV_LOG_WARNING, "Part of datagram lost due to insufficient buffer size\n");
                     avail = size;
                 }
 
-                av_fifo_generic_read(s->fifo, buf, avail, NULL);
-                av_fifo_drain(s->fifo, AV_RL32(tmp) - avail);
+                av_fifo_read(s->fifo, buf, avail);
+                av_fifo_drain2(s->fifo, AV_RL32(tmp) - avail);
                 pthread_mutex_unlock(&s->mutex);
                 return avail;
             } else if(s->circular_buffer_error){
@@ -1043,14 +1043,14 @@ static int udp_write(URLContext *h, const uint8_t *buf, int size)
             return err;
         }
 
-        if(av_fifo_space(s->fifo) < size + 4) {
+        if (av_fifo_can_write(s->fifo) < size + 4) {
             /* What about a partial packet tx ? */
             pthread_mutex_unlock(&s->mutex);
             return AVERROR(ENOMEM);
         }
         AV_WL32(tmp, size);
-        av_fifo_generic_write(s->fifo, tmp, 4, NULL); /* size of packet */
-        av_fifo_generic_write(s->fifo, (uint8_t *)buf, size, NULL); /* the data */
+        av_fifo_write(s->fifo, tmp, 4); /* size of packet */
+        av_fifo_write(s->fifo, buf, size); /* the data */
         pthread_cond_signal(&s->cond);
         pthread_mutex_unlock(&s->mutex);
         return size;
@@ -1112,7 +1112,7 @@ static int udp_close(URLContext *h)
     }
 #endif
     closesocket(s->udp_fd);
-    av_fifo_freep(&s->fifo);
+    av_fifo_freep2(&s->fifo);
     ff_ip_reset_filters(&s->filters);
     return 0;
 }
