From e7caeb4d49186af867c1d4693c9f3bf9e9ef99e0 Mon Sep 17 00:00:00 2001
From: deadmasterog <66454702+deadmasterog@users.noreply.github.com>
Date: Tue, 22 Oct 2024 19:32:09 -0700
Subject: [PATCH] use static mutex member in RtAudioOutput class to serialize
 RtAudio calls across instances (#32)

---
 include/openauto/Projection/RtAudioOutput.hpp | 2 +-
 openauto/Projection/RtAudioOutput.cpp         | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/openauto/Projection/RtAudioOutput.hpp b/include/openauto/Projection/RtAudioOutput.hpp
index 2cca63d..27bffde 100644
--- a/include/openauto/Projection/RtAudioOutput.hpp
+++ b/include/openauto/Projection/RtAudioOutput.hpp
@@ -50,7 +50,7 @@ private:
     uint32_t sampleRate_;
     SequentialBuffer audioBuffer_;
     std::unique_ptr<RtAudio> dac_;
-    std::mutex mutex_;
+    static std::mutex mutex_;
 };
 
 }
diff --git a/openauto/Projection/RtAudioOutput.cpp b/openauto/Projection/RtAudioOutput.cpp
index 962fad2..68ae27e 100644
--- a/openauto/Projection/RtAudioOutput.cpp
+++ b/openauto/Projection/RtAudioOutput.cpp
@@ -24,6 +24,8 @@ namespace openauto
 namespace projection
 {
 
+std::mutex RtAudioOutput::mutex_;
+
 RtAudioOutput::RtAudioOutput(uint32_t channelCount, uint32_t sampleSize, uint32_t sampleRate)
     : channelCount_(channelCount)
     , sampleSize_(sampleSize)