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https://github.com/Ryujinx/Ryujinx.git
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4c2ab880ef
* Ryujinx.Audio: Remove BOM from files * misc: Relicense Ryujinx.Audio under the terms of the MIT license With the approvals of all the Ryujinx.Audio contributors, this commit changes Ryujinx.Audio license from LGPLv3 to MIT.
62 lines
1.7 KiB
C#
62 lines
1.7 KiB
C#
using Ryujinx.Audio.Renderer.Utils;
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using Ryujinx.Common;
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using System;
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using System.Diagnostics;
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using System.Runtime.CompilerServices;
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namespace Ryujinx.Audio.Renderer.Common
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{
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public class WorkBufferAllocator
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{
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public Memory<byte> BackingMemory { get; }
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public ulong Offset { get; private set; }
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public WorkBufferAllocator(Memory<byte> backingMemory)
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{
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BackingMemory = backingMemory;
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}
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public Memory<byte> Allocate(ulong size, int align)
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{
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Debug.Assert(align != 0);
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if (size != 0)
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{
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ulong alignedOffset = BitUtils.AlignUp(Offset, align);
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if (alignedOffset + size <= (ulong)BackingMemory.Length)
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{
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Memory<byte> result = BackingMemory.Slice((int)alignedOffset, (int)size);
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Offset = alignedOffset + size;
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// Clear the memory to be sure that is does not contain any garbage.
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result.Span.Fill(0);
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return result;
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}
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}
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return Memory<byte>.Empty;
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}
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public Memory<T> Allocate<T>(ulong count, int align) where T: unmanaged
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{
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Memory<byte> allocatedMemory = Allocate((ulong)Unsafe.SizeOf<T>() * count, align);
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if (allocatedMemory.IsEmpty)
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{
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return Memory<T>.Empty;
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}
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return SpanMemoryManager<T>.Cast(allocatedMemory);
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}
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public static ulong GetTargetSize<T>(ulong currentSize, ulong count, int align) where T: unmanaged
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{
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return BitUtils.AlignUp(currentSize, align) + (ulong)Unsafe.SizeOf<T>() * count;
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}
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}
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}
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