First commit

.gitignore

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+.vs
+obj
+bin

FlexASIOGUI.csproj

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+<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <UseWindowsForms>true</UseWindowsForms>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Nett" Version="0.15.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Reference Include="portaudio-sharp">
+      <HintPath>lib\portaudio-sharp.dll</HintPath>
+    </Reference>
+  </ItemGroup>
+
+</Project>

FlexASIOGUI.csproj.user

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup />
+  <ItemGroup>
+    <Compile Update="Form1.cs">
+      <SubType>Form</SubType>
+    </Compile>
+  </ItemGroup>
+</Project>

FlexASIOGUI.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30114.105
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FlexASIOGUI", "FlexASIOGUI.csproj", "{3379A106-E2A5-4B28-92D0-D4E37D4ABCCF}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{3379A106-E2A5-4B28-92D0-D4E37D4ABCCF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3379A106-E2A5-4B28-92D0-D4E37D4ABCCF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3379A106-E2A5-4B28-92D0-D4E37D4ABCCF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3379A106-E2A5-4B28-92D0-D4E37D4ABCCF}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {539BEB5C-0112-411A-9369-271DE771B870}
+	EndGlobalSection
+EndGlobal

FlexGUIConfig.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace FlexASIOGUI
+{
+    public class FlexGUIConfig
+    {
+        public string backend { get; set; } = "Windows WASAPI";
+        public int bufferSizeSamples { get; set; } = 256;
+        public FlexGUIConfigDeviceSection input { get; set; }
+        public FlexGUIConfigDeviceSection output { get; set; }
+
+        public FlexGUIConfig()
+        {
+            input = new FlexGUIConfigDeviceSection();
+            output = new FlexGUIConfigDeviceSection();
+        }
+
+    }
+    public class FlexGUIConfigDeviceSection
+    {
+        public string device { get; set; }
+        public double suggestedLatencySeconds { get; set; }
+        public bool wasapiExclusiveMode { get; set; } = false;
+        public bool wasapiAutoConvert { get; set; } = true;
+        public int? channels { get; set; }
+    }
+}