From b065dd8117fe4b04fda9a6fc56ba9bfd2eea9b02 Mon Sep 17 00:00:00 2001
From: Martin Piatka <piatka@cesnet.cz>
Date: Mon, 20 Sep 2021 14:28:22 +0200
Subject: [PATCH] ring_buffer: add fill() function

---
 src/utils/ring_buffer.cpp | 20 ++++++++++++++++++++
 src/utils/ring_buffer.h   |  2 ++
 2 files changed, 22 insertions(+)

diff --git a/src/utils/ring_buffer.cpp b/src/utils/ring_buffer.cpp
index ca33472a1..968cd00ae 100644
--- a/src/utils/ring_buffer.cpp
+++ b/src/utils/ring_buffer.cpp
@@ -228,6 +228,26 @@ int ring_get_size(struct ring_buffer * ring) {
         return ring->len;
 }
 
+void ring_fill(struct ring_buffer *ring, int c, int size){
+        void *ptr1;
+        int size1;
+        void *ptr2;
+        int size2;
+        if(!ring_get_write_regions(ring, size, &ptr1, &size1, &ptr2, &size2)){
+                fprintf(stderr, "Warning: too long write request for ring buffer (%d B)!!!\n", size);
+                return;
+        }
+
+        memset(ptr1, c, size1);
+        if(ptr2){
+                memset(ptr2, c, size2);
+        }
+
+        if(ring_advance_write_idx(ring, size)) {
+                fprintf(stderr, "Warning: ring buffer overflow!!!\n");
+        }
+}
+
 /* ring_get_current_size and ring_get_available_write_size can be called from
  * both reader and writer threads.
  *
diff --git a/src/utils/ring_buffer.h b/src/utils/ring_buffer.h
index b9b02c281..fc6d7b8f0 100644
--- a/src/utils/ring_buffer.h
+++ b/src/utils/ring_buffer.h
@@ -137,6 +137,8 @@ int ring_get_write_regions(struct ring_buffer *ring, int requested_len,
  */
 bool ring_advance_write_idx(struct ring_buffer *ring, int amount);
 
+void ring_fill(struct ring_buffer *ring, int c, int size);
+
 extern struct audio_buffer_api ring_buffer_fns;
 
 #ifdef __cplusplus