From c3d9243a3eadf3d7eecdb11c8c98e5d88862ab12 Mon Sep 17 00:00:00 2001
From: Misaki Kasumi <misakikasumi@outlook.com>
Date: Fri, 27 Sep 2024 11:01:03 +0800
Subject: [PATCH] ao_coreaudio: fix nan in ca_get_device_latency_ns

---
 audio/out/ao_coreaudio_utils.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/audio/out/ao_coreaudio_utils.c b/audio/out/ao_coreaudio_utils.c
index 78cdcad393..f06d3fae26 100644
--- a/audio/out/ao_coreaudio_utils.c
+++ b/audio/out/ao_coreaudio_utils.c
@@ -442,12 +442,14 @@ int64_t ca_get_device_latency_ns(struct ao *ao, AudioDeviceID device)
         }
     }
 
-    double sample_rate = ao->samplerate;
+    double sample_rate;
     OSStatus err = CA_GET_O(device, kAudioDevicePropertyNominalSampleRate,
                             &sample_rate);
     CHECK_CA_WARN("cannot get device sample rate, falling back to AO sample rate!");
     if (err == noErr) {
         MP_VERBOSE(ao, "Device sample rate: %f\n", sample_rate);
+    } else {
+        sample_rate = ao->samplerate;
     }
 
     return MP_TIME_S_TO_NS(latency_frames / sample_rate);