From 58b1f03a9ad3b0a3c7cae2e8fbf7b5e054cb243d Mon Sep 17 00:00:00 2001
From: Stevo John <stevehuwjohn@gmail.com>
Date: Wed, 14 Aug 2024 23:31:43 +0100
Subject: [PATCH] WIP

---
 .../BassAudioEngine.cs}                       |  8 +--
 .../Modules/Audio/Engines/IZenAudioEngine.cs  |  6 +++
 .../Modules/Audio/Engines/PortAudioEngine.cs  | 49 +++++++++++++++++++
 src/Zen.System/Modules/AyAudio.cs             |  3 +-
 src/Zen.System/Zen.System.csproj              |  1 +
 5 files changed, 62 insertions(+), 5 deletions(-)
 rename src/Zen.System/Modules/Audio/{AudioEngine.cs => Engines/BassAudioEngine.cs} (91%)
 create mode 100644 src/Zen.System/Modules/Audio/Engines/IZenAudioEngine.cs
 create mode 100644 src/Zen.System/Modules/Audio/Engines/PortAudioEngine.cs

diff --git a/src/Zen.System/Modules/Audio/AudioEngine.cs b/src/Zen.System/Modules/Audio/Engines/BassAudioEngine.cs
similarity index 91%
rename from src/Zen.System/Modules/Audio/AudioEngine.cs
rename to src/Zen.System/Modules/Audio/Engines/BassAudioEngine.cs
index 9197e775..01718623 100644
--- a/src/Zen.System/Modules/Audio/AudioEngine.cs
+++ b/src/Zen.System/Modules/Audio/Engines/BassAudioEngine.cs
@@ -2,9 +2,9 @@
 using Un4seen.Bass;
 using Zen.Common.Infrastructure;
 
-namespace Zen.System.Modules.Audio;
+namespace Zen.System.Modules.Audio.Engines;
 
-public class AudioEngine : IDisposable
+public class BassAudioEngine : IZenAudioEngine
 {
     private static readonly AutoResetEvent ResetEvent = new(true);
 
@@ -14,7 +14,7 @@ public class AudioEngine : IDisposable
     
     private bool _first = true;
     
-    public AudioEngine()
+    public BassAudioEngine()
     {
         if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux) && ! File.Exists(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "libbass.so")))
         {
@@ -40,7 +40,7 @@ public AudioEngine()
         }
         catch (Exception exception)
         {
-            Logger.LogException(nameof(AudioEngine), exception);
+            Logger.LogException(nameof(BassAudioEngine), exception);
         }
     }
 
diff --git a/src/Zen.System/Modules/Audio/Engines/IZenAudioEngine.cs b/src/Zen.System/Modules/Audio/Engines/IZenAudioEngine.cs
new file mode 100644
index 00000000..e59ee5f9
--- /dev/null
+++ b/src/Zen.System/Modules/Audio/Engines/IZenAudioEngine.cs
@@ -0,0 +1,6 @@
+namespace Zen.System.Modules.Audio.Engines;
+
+public interface IZenAudioEngine : IDisposable
+{
+    void Send(float[] data);
+}
\ No newline at end of file
diff --git a/src/Zen.System/Modules/Audio/Engines/PortAudioEngine.cs b/src/Zen.System/Modules/Audio/Engines/PortAudioEngine.cs
new file mode 100644
index 00000000..a5c8b04e
--- /dev/null
+++ b/src/Zen.System/Modules/Audio/Engines/PortAudioEngine.cs
@@ -0,0 +1,49 @@
+using System.Runtime.InteropServices;
+using Bufdio;
+using Bufdio.Engines;
+using Zen.Common.Infrastructure;
+
+namespace Zen.System.Modules.Audio.Engines;
+
+public class PortAudioEngine : IZenAudioEngine
+{
+    private readonly IAudioEngine? _engine;
+
+    public PortAudioEngine()
+    {
+        try
+        {
+            if (Environment.OSVersion.Platform == PlatformID.Unix)
+            {
+                if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
+                {
+                    BufdioLib.InitializePortAudio();
+                }
+                else
+                {
+                    BufdioLib.InitializePortAudio(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Libraries", "libportaudio.dylib"));
+                }
+            }
+            else
+            {
+                BufdioLib.InitializePortAudio(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Libraries", "libportaudio"));
+            }
+
+            _engine = new Bufdio.Engines.PortAudioEngine(new AudioEngineOptions(1, Constants.SampleRate));
+        }
+        catch (Exception exception)
+        {
+            Logger.LogException(nameof(PortAudioEngine), exception);
+        }
+    }
+
+    public void Send(float[] data)
+    {
+        _engine?.Send(data);
+    }
+
+    public void Dispose()
+    {
+        _engine?.Dispose();
+    }
+}
\ No newline at end of file
diff --git a/src/Zen.System/Modules/AyAudio.cs b/src/Zen.System/Modules/AyAudio.cs
index 99c3f622..b9449310 100644
--- a/src/Zen.System/Modules/AyAudio.cs
+++ b/src/Zen.System/Modules/AyAudio.cs
@@ -1,5 +1,6 @@
 using Zen.Common.Infrastructure;
 using Zen.System.Modules.Audio;
+using Zen.System.Modules.Audio.Engines;
 
 namespace Zen.System.Modules;
 
@@ -21,7 +22,7 @@ public class AyAudio : IDisposable
 
     private float[] _buffer;
 
-    private readonly AudioEngine _engine = new();
+    private readonly IZenAudioEngine _engine = new PortAudioEngine();
 
     private readonly CancellationTokenSource _cancellationTokenSource;
 
diff --git a/src/Zen.System/Zen.System.csproj b/src/Zen.System/Zen.System.csproj
index a4a0c466..9a314ce2 100644
--- a/src/Zen.System/Zen.System.csproj
+++ b/src/Zen.System/Zen.System.csproj
@@ -17,6 +17,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Bufdio" Version="0.1.0" />
     <PackageReference Include="radio42.Bass.Net.core" Version="2.4.17.5" />
   </ItemGroup>