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Improve dynamic library loading on platforms like MacOS #4

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e7293e7
Improve dynamic library loading on platforms like MacOS
Ghorthalon Jan 26, 2026
a7e8f14
Chore: Bump version numbers
Ghorthalon Jan 31, 2026
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5 changes: 4 additions & 1 deletion .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -60,4 +60,7 @@ TestResult.xml
nunit-*.xml

publish
publish.sh
publish.sh

# Desktop specific
.DS_Store
2 changes: 1 addition & 1 deletion GraphAudio.Kit/GraphAudio.Kit.csproj
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Expand Up @@ -32,7 +32,7 @@
<PackageReference Include="GraphAudio.Core" Version="0.4.1" />
<PackageReference Include="GraphAudio.IO" Version="0.4.1" />
<PackageReference Include="GraphAudio.Realtime" Version="0.4.3" />
<PackageReference Include="GraphAudio.SteamAudio" Version="0.4.2" />
<PackageReference Include="GraphAudio.SteamAudio" Version="0.4.3" />
</ItemGroup>

<ItemGroup>
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2 changes: 1 addition & 1 deletion GraphAudio.SteamAudio/GraphAudio.SteamAudio.csproj
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Expand Up @@ -12,7 +12,7 @@
<Authors>the-byte-bender</Authors>
<Description>Spatial audio for GraphAudio using Steam Audio</Description>
<Copyright>2025</Copyright>
<Version>0.4.2</Version>
<Version>0.4.3</Version>
<PackageId>GraphAudio.SteamAudio</PackageId>
<PackageProjectUrl>https://github.com/the-byte-bender/GraphAudio</PackageProjectUrl>
<RepositoryUrl>https://github.com/the-byte-bender/GraphAudio</RepositoryUrl>
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1 change: 1 addition & 0 deletions GraphAudio.SteamAudio/SteamAudioContext.cs
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Expand Up @@ -63,6 +63,7 @@ private static SteamAudioResources GetOrCreate(AudioContextBase context)
{
return _contextMap.GetOrAdd(context, ctx =>
{
SteamAudioNativeLoader.EnsureLoaded();
var resources = new SteamAudioResources(ctx.SampleRate, AudioBuffer.FramesPerBlock);

var contextSettings = new IPL.ContextSettings
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99 changes: 99 additions & 0 deletions GraphAudio.SteamAudio/SteamAudioNativeLoader.cs
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@@ -0,0 +1,99 @@
using System;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;

namespace GraphAudio.SteamAudio;

/// <summary>
/// Handles native library loading for SteamAudio on macOS where the NuGet package
/// uses osx-universal RID instead of osx-arm64/osx-x64.
/// </summary>
internal static class SteamAudioNativeLoader
{
private static bool _isRegistered = false;
private static readonly object _lock = new object();

/// <summary>
/// Registers the DllImport resolver for SteamAudio native libraries.
/// </summary>
internal static void EnsureLoaded()
{
lock (_lock)
{
if (_isRegistered) return;

var steamAudioAssembly = AppDomain.CurrentDomain.GetAssemblies()
.FirstOrDefault(a => a.GetName().Name == "SteamAudio.NET");

if (steamAudioAssembly != null)
{
NativeLibrary.SetDllImportResolver(steamAudioAssembly, DllImportResolver);
}

_isRegistered = true;
}
}

private static IntPtr DllImportResolver(string libraryName, Assembly assembly, DllImportSearchPath? searchPath)
{
if (!libraryName.Equals("phonon.dll", StringComparison.OrdinalIgnoreCase) &&
!libraryName.Equals("phonon", StringComparison.OrdinalIgnoreCase))
{
return IntPtr.Zero;
}

// Try base directory first (for .app bundles where dylibs are in MacOS/)
var baseDirectoryPath = GetBaseDirectoryPath();
if (baseDirectoryPath != null && File.Exists(baseDirectoryPath))
{
if (NativeLibrary.TryLoad(baseDirectoryPath, out var handle))
return handle;
}

var archSpecificPath = GetArchitectureSpecificPath();
if (archSpecificPath != null && File.Exists(archSpecificPath))
{
if (NativeLibrary.TryLoad(archSpecificPath, out var handle))
return handle;
}

var universalPath = GetUniversalPath();
if (universalPath != null && File.Exists(universalPath))
{
if (NativeLibrary.TryLoad(universalPath, out var handle))
return handle;
}

return IntPtr.Zero;
}

private static string? GetBaseDirectoryPath()
{
if (!RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
return null;

return Path.Combine(AppContext.BaseDirectory, "libphonon.dylib");
}

private static string? GetArchitectureSpecificPath()
{
if (!RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
return null;

var baseDir = AppContext.BaseDirectory;
var arch = RuntimeInformation.ProcessArchitecture;
var rid = arch == Architecture.Arm64 ? "osx-arm64" : "osx-x64";

return Path.Combine(baseDir, "runtimes", rid, "native", "libphonon.dylib");
}

private static string? GetUniversalPath()
{
if (!RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
return null;

return Path.Combine(AppContext.BaseDirectory, "runtimes", "osx-universal", "native", "libphonon.dylib");
}
}
Empty file modified pack-local.sh
100644 → 100755
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