Move solution and projects to src

src/Ryujinx.Audio/Integration/HardwareDeviceImpl.cs

@@ -0,0 +1,75 @@
+using Ryujinx.Audio.Common;
+using System;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Audio.Integration
+{
+    public class HardwareDeviceImpl : IHardwareDevice
+    {
+        private IHardwareDeviceSession _session;
+        private uint _channelCount;
+        private uint _sampleRate;
+        private uint _currentBufferTag;
+
+        private byte[] _buffer;
+
+        public HardwareDeviceImpl(IHardwareDeviceDriver deviceDriver, uint channelCount, uint sampleRate, float volume)
+        {
+            _session = deviceDriver.OpenDeviceSession(IHardwareDeviceDriver.Direction.Output, null, SampleFormat.PcmInt16, sampleRate, channelCount, volume);
+            _channelCount = channelCount;
+            _sampleRate = sampleRate;
+            _currentBufferTag = 0;
+
+            _buffer = new byte[Constants.TargetSampleCount * channelCount * sizeof(ushort)];
+
+            _session.Start();
+        }
+
+        public void AppendBuffer(ReadOnlySpan<short> data, uint channelCount)
+        {
+            data.CopyTo(MemoryMarshal.Cast<byte, short>(_buffer));
+
+            _session.QueueBuffer(new AudioBuffer
+            {
+                DataPointer = _currentBufferTag++,
+                Data = _buffer,
+                DataSize = (ulong)_buffer.Length,
+            });
+
+            _currentBufferTag = _currentBufferTag % 4;
+        }
+
+        public void SetVolume(float volume)
+        {
+            _session.SetVolume(volume);
+        }
+
+        public float GetVolume()
+        {
+            return _session.GetVolume();
+        }
+
+        public uint GetChannelCount()
+        {
+            return _channelCount;
+        }
+
+        public uint GetSampleRate()
+        {
+            return _sampleRate;
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                _session.Dispose();
+            }
+        }
+    }
+}