From 874c15a90a6aeeb436798994b261a3fddcaa4652 Mon Sep 17 00:00:00 2001
From: Misaki Kasumi <misakikasumi@outlook.com>
Date: Wed, 20 Mar 2024 10:06:51 +0800
Subject: [PATCH] ao_avfoundation: handle case when ao_read_data returns zero
 samples

---
 audio/out/ao_avfoundation.m | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/audio/out/ao_avfoundation.m b/audio/out/ao_avfoundation.m
index b8fff08036fea..9b6511afc2686 100644
--- a/audio/out/ao_avfoundation.m
+++ b/audio/out/ao_avfoundation.m
@@ -98,6 +98,10 @@ static void feed(struct ao *ao)
     if (real_sample_count == 0) {
         // in this case, we must satisfy renderer to avoid spining
         real_sample_count = ao_read_data(ao, data, request_sample_count, p->end_time_mp);
+        if (real_sample_count == 0) {
+            // ao_read_data may still return zero?
+            real_sample_count = request_sample_count;
+        }
     }
 
     CMSampleTimingInfo sample_timing_into[] = {(CMSampleTimingInfo) {