WIP: OpenAL audio system.

Voile.OpenAL/OpenALSystem.cs

@@ -0,0 +1,59 @@
+using Voile.Audio;
+using Silk.NET.OpenAL;
+
+namespace Voile.OpenAL;
+
+public class OpenALSystem : AudioSystem
+{
+    public OpenALSystem()
+    {
+        _al = AL.GetApi();
+        _alc = ALContext.GetApi();
+
+        Init();
+    }
+
+    public override void PlaySound(Sound sound, float volume)
+    {
+        var buffer = CreateAlBuffer(sound.Buffer, sound.SampleRate, sound.Channel);
+        var source = CreateAlSource(buffer);
+        _al.SourcePlay(source);
+    }
+
+    public override void Update(double deltaTime)
+    {
+        throw new NotImplementedException();
+    }
+
+    private unsafe void Init()
+    {
+        _device = _alc.OpenDevice("");
+        _context = _alc.CreateContext(_device, null);
+        _alc.MakeContextCurrent(_context);
+    }
+
+    private uint CreateAlBuffer(ReadOnlyMemory<short> data, int sampleRate, SoundChannel channels)
+    {
+        var buffer = _al.GenBuffer();
+        var format = channels == SoundChannel.Mono ? BufferFormat.Mono16 : BufferFormat.Stereo16;
+
+        unsafe
+        {
+            _al.BufferData(buffer, format, data.Pin().Pointer, data.Length, sampleRate);
+        }
+
+        return buffer;
+    }
+
+    private uint CreateAlSource(uint buffer)
+    {
+        var source = _al.GenSource();
+        _al.SetSourceProperty(source, SourceInteger.Buffer, buffer);
+        return source;
+    }
+
+    private unsafe Device* _device;
+    private ALContext _alc;
+    private unsafe Context* _context;
+    private AL _al;
+}