Ryujinx/Ryujinx.HLE/HOS/Ipc/IpcHandleDesc.cs

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using Microsoft.IO;
using Ryujinx.Common;
using Ryujinx.Common.Memory;
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using System;
using System.IO;
namespace Ryujinx.HLE.HOS.Ipc
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{
class IpcHandleDesc
{
public bool HasPId { get; private set; }
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public ulong PId { get; private set; }
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public int[] ToCopy { get; private set; }
public int[] ToMove { get; private set; }
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public IpcHandleDesc(BinaryReader reader)
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{
int word = reader.ReadInt32();
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HasPId = (word & 1) != 0;
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PId = HasPId ? reader.ReadUInt64() : 0;
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int toCopySize = (word >> 1) & 0xf;
int[] toCopy = toCopySize == 0 ? Array.Empty<int>() : new int[toCopySize];
for (int index = 0; index < toCopy.Length; index++)
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{
toCopy[index] = reader.ReadInt32();
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}
ToCopy = toCopy;
int toMoveSize = (word >> 5) & 0xf;
int[] toMove = toMoveSize == 0 ? Array.Empty<int>() : new int[toMoveSize];
for (int index = 0; index < toMove.Length; index++)
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{
toMove[index] = reader.ReadInt32();
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}
ToMove = toMove;
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}
public IpcHandleDesc(int[] copy, int[] move)
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{
ToCopy = copy ?? throw new ArgumentNullException(nameof(copy));
ToMove = move ?? throw new ArgumentNullException(nameof(move));
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}
public IpcHandleDesc(int[] copy, int[] move, ulong pId) : this(copy, move)
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{
PId = pId;
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HasPId = true;
}
public static IpcHandleDesc MakeCopy(params int[] handles)
{
return new IpcHandleDesc(handles, Array.Empty<int>());
}
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public static IpcHandleDesc MakeMove(params int[] handles)
{
return new IpcHandleDesc(Array.Empty<int>(), handles);
}
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public RecyclableMemoryStream GetStream()
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{
RecyclableMemoryStream ms = MemoryStreamManager.Shared.GetStream();
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int word = HasPId ? 1 : 0;
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word |= (ToCopy.Length & 0xf) << 1;
word |= (ToMove.Length & 0xf) << 5;
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ms.Write(word);
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if (HasPId)
{
ms.Write(PId);
}
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ms.Write(ToCopy);
ms.Write(ToMove);
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ms.Position = 0;
return ms;
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}
}
}