From 509423a43a5e3b1eb1a5069825532280bb8118ad Mon Sep 17 00:00:00 2001
From: clangen <casey.langen@gmail.com>
Date: Fri, 10 Jun 2016 00:29:45 -0700
Subject: [PATCH] Properly close the ALSA output device when stopped. Fixes a
 high CPU usage bug in Linux.

---
 src/contrib/alsaout/AlsaOut.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/contrib/alsaout/AlsaOut.cpp b/src/contrib/alsaout/AlsaOut.cpp
index b079cecde..7cc021e2f 100755
--- a/src/contrib/alsaout/AlsaOut.cpp
+++ b/src/contrib/alsaout/AlsaOut.cpp
@@ -47,7 +47,6 @@
 #define CHECK_QUIT() if (this->quit) { return; }
 #define PRINT_ERROR(x) std::cerr << "AlsaOut: error! " << snd_strerror(x) << std::endl;
 
-
 #define WRITE_BUFFER(handle, context, samples) \
     err = snd_pcm_writei(handle, context->buffer->BufferPointer(), samples); \
     if (err < 0) { PRINT_ERROR(err); }
@@ -165,7 +164,11 @@ void AlsaOut::Stop() {
 
         if (this->pcmHandle) {
             snd_pcm_drop(this->pcmHandle);
-            snd_pcm_prepare(this->pcmHandle);
+
+            if (this->pcmHandle) {
+                snd_pcm_close(this->pcmHandle);
+                this->pcmHandle = NULL;
+            }
         }
     }