From 70858ad2e55efe31f4d09c095ed28240e7b32bd7 Mon Sep 17 00:00:00 2001
From: Boris-Chengbiao Zhou <bobo1239@web.de>
Date: Fri, 19 Aug 2016 21:48:53 +0200
Subject: [PATCH] Fix #126

---
 src/wasapi/voice.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/wasapi/voice.rs b/src/wasapi/voice.rs
index 6be243b..eb3a9ea 100644
--- a/src/wasapi/voice.rs
+++ b/src/wasapi/voice.rs
@@ -378,6 +378,8 @@ impl Stream for SamplesStream {
                 self.max_frames_in_buffer - padding
             };
 
+            if frames_available == 0 { return Poll::NotReady; }
+
             // Obtaining a pointer to the buffer.
             let (buffer_data, buffer_len) = {
                 let mut buffer: *mut winapi::BYTE = mem::uninitialized();