Use pooled memory and avoid memory copies (#6691)

* perf: use ByteMemoryPool

* feat: KPageTableBase/KPageTable new methods to read and write `ReadOnlySequence<byte>`

* new: add IWritableBlock.Write(ulong, ReadOnlySequence<byte>) with default impl

* perf: use GetReadOnlySequence() instead of GetSpan()

* perf: make `Parcel` IDisposable, use `ByteMemoryPool` for internal allocation, and make Parcel consumers dispose of it

* remove comment about copySize

* remove unnecessary Clear()

src/Ryujinx.Audio.Backends.SoundIo/SoundIoHardwareDeviceSession.cs

@@ -1,8 +1,10 @@
 using Ryujinx.Audio.Backends.Common;
 using Ryujinx.Audio.Backends.SoundIo.Native;
 using Ryujinx.Audio.Common;
+using Ryujinx.Common.Memory;
 using Ryujinx.Memory;
 using System;
+using System.Buffers;
 using System.Collections.Concurrent;
 using System.Runtime.CompilerServices;
 using System.Threading;
@@ -37,7 +39,7 @@ namespace Ryujinx.Audio.Backends.SoundIo
             _outputStream = _driver.OpenStream(RequestedSampleFormat, RequestedSampleRate, RequestedChannelCount);
             _outputStream.WriteCallback += Update;
             _outputStream.Volume = requestedVolume;
-            // TODO: Setup other callbacks (errors, ect).
+            // TODO: Setup other callbacks (errors, etc.)
 
             _outputStream.Open();
         }
@@ -120,7 +122,9 @@ namespace Ryujinx.Audio.Backends.SoundIo
 
             int channelCount = areas.Length;
 
-            byte[] samples = new byte[frameCount * bytesPerFrame];
+            using IMemoryOwner<byte> samplesOwner = ByteMemoryPool.Rent(frameCount * bytesPerFrame);
+
+            Span<byte> samples = samplesOwner.Memory.Span;
 
             _ringBuffer.Read(samples, 0, samples.Length);