From b0f22d0433704727890978a7bd26d939f865ac11 Mon Sep 17 00:00:00 2001
From: Jem <jif0729@gmail.com>
Date: Mon, 12 Aug 2019 11:05:09 +0800
Subject: [PATCH] fix(audio preprocessor): filter audio with zero length

---
 gnes/preprocessor/helper.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gnes/preprocessor/helper.py b/gnes/preprocessor/helper.py
index e08b81ab..018bc549 100644
--- a/gnes/preprocessor/helper.py
+++ b/gnes/preprocessor/helper.py
@@ -95,7 +95,8 @@ def get_audio(buffer_data, sample_rate, interval,
             # has multiple channels, do average
             if len(data.shape) == 2:
                 data = np.mean(data, axis=1)
-            audio_list.append(data)
+            if data.shape[0] != 0:
+                audio_list.append(data)
 
         start_time = end_time