From 5829e36a5cf5c1586dc8ebb5b52f99b7f61605b6 Mon Sep 17 00:00:00 2001
From: jduncanator <jduncanator@users.noreply.github.com>
Date: Sat, 17 Nov 2018 14:35:15 +1100
Subject: [PATCH] Audio: Properly implements audio fallback for SoundIO (#500)

* Audio: Properly implements audio fallback for SoundIO

Given some drivers have issues with SoundIO (for the time being), this attempts to detect if SoundIO can open the default audio device, and then return false in IsSupported if it can't.

* Audio: Handle the backend disconnected event

libsoundio panics by default when a backend disconnects, this catches that event and gracefully handles it.

* Audio: Fix styling nits

* Audio: Fix nits

Because Ac_K. :tired_face:
---
 .../Renderers/SoundIo/SoundIoAudioOut.cs      | 61 ++++++++++++++++++-
 1 file changed, 60 insertions(+), 1 deletion(-)

diff --git a/Ryujinx.Audio/Renderers/SoundIo/SoundIoAudioOut.cs b/Ryujinx.Audio/Renderers/SoundIo/SoundIoAudioOut.cs
index 76b1290d..0d3e74dd 100644
--- a/Ryujinx.Audio/Renderers/SoundIo/SoundIoAudioOut.cs
+++ b/Ryujinx.Audio/Renderers/SoundIo/SoundIoAudioOut.cs
@@ -32,7 +32,66 @@ namespace Ryujinx.Audio
         /// <summary>
         /// True if SoundIO is supported on the device.
         /// </summary>
-        public static bool IsSupported => true;
+        public static bool IsSupported
+        {
+            get
+            {
+                SoundIO          context = null;
+                SoundIODevice    device  = null;
+                SoundIOOutStream stream  = null;
+
+                bool backendDisconnected = false;
+
+                try
+                {
+                    context = new SoundIO();
+
+                    context.OnBackendDisconnect = (i) => {
+                        backendDisconnected = true;
+                    };
+
+                    context.Connect();
+                    context.FlushEvents();
+
+                    if(backendDisconnected)
+                    {
+                        return false;
+                    }
+
+                    device = context.GetOutputDevice(context.DefaultOutputDeviceIndex);
+
+                    if(device == null || backendDisconnected)
+                    {
+                        return false;
+                    }
+
+                    stream = device.CreateOutStream();
+
+                    if(stream == null || backendDisconnected)
+                    {
+                        return false;
+                    }
+
+                    return true;
+                }
+                catch
+                {
+                    return false;
+                }
+                finally
+                {
+                    if(stream != null)
+                    {
+                        stream.Dispose();
+                    }
+
+                    if(context != null)
+                    {
+                        context.Dispose();
+                    }
+                }
+            }
+        }
 
         /// <summary>
         /// Constructs a new instance of a <see cref="SoundIoAudioOut"/>