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Ryujinx/Ryujinx.Audio.Backends.SoundIo/Native/SoundIoContext.cs
Mary-nyan 403e67d983
audio: Rewrite SoundIo bindings (#4088)
* audio: Rewrite SoundIo bindings

This rewrite SoundIo bindings to be safer and not a pedantic autogenerated mess.

* Address comments

* Switch DllImport to LibraryImport

* Address gdkchan's comment
2022-12-11 00:57:01 +01:00

107 lines
2.9 KiB
C#

using System;
using System.Reflection.Metadata;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Threading;
using static Ryujinx.Audio.Backends.SoundIo.Native.SoundIo;
namespace Ryujinx.Audio.Backends.SoundIo.Native
{
public class SoundIoContext : IDisposable
{
private IntPtr _context;
private Action<SoundIoError> _onBackendDisconnect;
private OnBackendDisconnectedDelegate _onBackendDisconnectNative;
public IntPtr Context => _context;
internal SoundIoContext(IntPtr context)
{
_context = context;
_onBackendDisconnect = null;
_onBackendDisconnectNative = null;
}
public SoundIoError Connect() => soundio_connect(_context);
public void Disconnect() => soundio_disconnect(_context);
public void FlushEvents() => soundio_flush_events(_context);
public int OutputDeviceCount => soundio_output_device_count(_context);
public int DefaultOutputDeviceIndex => soundio_default_output_device_index(_context);
public Action<SoundIoError> OnBackendDisconnect
{
get { return _onBackendDisconnect; }
set
{
_onBackendDisconnect = value;
if (_onBackendDisconnect == null)
{
_onBackendDisconnectNative = null;
}
else
{
_onBackendDisconnectNative = (ctx, err) => _onBackendDisconnect(err);
}
GetContext().OnBackendDisconnected = Marshal.GetFunctionPointerForDelegate(_onBackendDisconnectNative);
}
}
private ref SoundIoStruct GetContext()
{
unsafe
{
return ref Unsafe.AsRef<SoundIoStruct>((SoundIoStruct*)_context);
}
}
public SoundIoDeviceContext GetOutputDevice(int index)
{
IntPtr deviceContext = soundio_get_output_device(_context, index);
if (deviceContext == IntPtr.Zero)
{
return null;
}
return new SoundIoDeviceContext(deviceContext);
}
public static SoundIoContext Create()
{
IntPtr context = soundio_create();
if (context == IntPtr.Zero)
{
return null;
}
return new SoundIoContext(context);
}
protected virtual void Dispose(bool disposing)
{
IntPtr currentContext = Interlocked.Exchange(ref _context, IntPtr.Zero);
if (currentContext != IntPtr.Zero)
{
soundio_destroy(currentContext);
}
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
~SoundIoContext()
{
Dispose(false);
}
}
}