From 6c28242aff68912bf2d216f6d9b7b13e6bfd00ac Mon Sep 17 00:00:00 2001
From: TYW_espressif <1282774035@qq.com>
Date: Wed, 26 Feb 2025 15:26:57 +0800
Subject: [PATCH] audio_pipeline : Fixed a bug that caused an element to be
 linked to an uninitialized ring buffer when there was only a single element
 in the pipeline.

Closes https://github.com/espressif/esp-adf/pull/1386
Closes https://github.com/espressif/esp-adf/issues/1341
---
 components/audio_pipeline/audio_pipeline.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/components/audio_pipeline/audio_pipeline.c b/components/audio_pipeline/audio_pipeline.c
index 8be8365ce..5ba2e161c 100644
--- a/components/audio_pipeline/audio_pipeline.c
+++ b/components/audio_pipeline/audio_pipeline.c
@@ -462,6 +462,9 @@ static esp_err_t _pipeline_rb_linked(audio_pipeline_handle_t pipeline, audio_ele
 {
     static ringbuf_handle_t rb;
     ringbuf_item_t *rb_item;
+    if (first) {
+        rb = NULL;
+    }
     if (last) {
         audio_element_set_input_ringbuf(el, rb);
     } else {