Move solution and projects to src

src/Ryujinx.Audio/Renderer/Server/Upsampler/UpsamplerManager.cs

@@ -0,0 +1,84 @@
+using System;
+using System.Diagnostics;
+
+namespace Ryujinx.Audio.Renderer.Server.Upsampler
+{
+    /// <summary>
+    /// Upsampler manager.
+    /// </summary>
+    public class UpsamplerManager
+    {
+        /// <summary>
+        /// Work buffer for upsampler.
+        /// </summary>
+        private Memory<float> _upSamplerWorkBuffer;
+
+        /// <summary>
+        /// Global lock of the object.
+        /// </summary>
+        private object Lock = new object();
+
+        /// <summary>
+        /// The upsamplers instances.
+        /// </summary>
+        private UpsamplerState[] _upsamplers;
+
+        /// <summary>
+        /// The count of upsamplers.
+        /// </summary>
+        private uint _count;
+
+        /// <summary>
+        /// Create a new <see cref="UpsamplerManager"/>.
+        /// </summary>
+        /// <param name="upSamplerWorkBuffer">Work buffer for upsampler.</param>
+        /// <param name="count">The count of upsamplers.</param>
+        public UpsamplerManager(Memory<float> upSamplerWorkBuffer, uint count)
+        {
+            _upSamplerWorkBuffer = upSamplerWorkBuffer;
+            _count = count;
+
+            _upsamplers = new UpsamplerState[_count];
+        }
+
+        /// <summary>
+        /// Allocate a new <see cref="UpsamplerState"/>.
+        /// </summary>
+        /// <returns>A new <see cref="UpsamplerState"/> or null if out of memory.</returns>
+        public UpsamplerState Allocate()
+        {
+            int workBufferOffset = 0;
+
+            lock (Lock)
+            {
+                for (int i = 0; i < _count; i++)
+                {
+                    if (_upsamplers[i] == null)
+                    {
+                        _upsamplers[i] = new UpsamplerState(this, i, _upSamplerWorkBuffer.Slice(workBufferOffset, Constants.UpSampleEntrySize), Constants.TargetSampleCount);
+
+                        return _upsamplers[i];
+                    }
+
+                    workBufferOffset += Constants.UpSampleEntrySize;
+                }
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Free a <see cref="UpsamplerState"/> at the given index.
+        /// </summary>
+        /// <param name="index">The index of the <see cref="UpsamplerState"/> to free.</param>
+        public void Free(int index)
+        {
+            lock (Lock)
+            {
+                Debug.Assert(_upsamplers[index] != null);
+
+                _upsamplers[index] = null;
+            }
+        }
+    }
+}