Ryujinx/Ryujinx.Horizon/Sdk/Sf/CommandHandler.cs

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using Ryujinx.Horizon.Common;
using Ryujinx.Horizon.Sdk.Sf.Cmif;
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace Ryujinx.Horizon.Sdk.Sf
{
class CommandHandler
{
public delegate Result MethodInvoke(
ref ServiceDispatchContext context,
HipcCommandProcessor processor,
ServerMessageRuntimeMetadata runtimeMetadata,
ReadOnlySpan<byte> inRawData,
ref Span<CmifOutHeader> outHeader);
private readonly MethodInvoke _invoke;
private readonly HipcCommandProcessor _processor;
public string MethodName => _invoke.Method.Name;
public CommandHandler(MethodInvoke invoke, params CommandArg[] args)
{
_invoke = invoke;
_processor = new HipcCommandProcessor(args);
}
public Result Invoke(ref Span<CmifOutHeader> outHeader, ref ServiceDispatchContext context, ReadOnlySpan<byte> inRawData)
{
if (context.Processor == null)
{
context.Processor = _processor;
}
else
{
context.Processor.SetImplementationProcessor(_processor);
}
var runtimeMetadata = context.Processor.GetRuntimeMetadata();
Result result = context.Processor.PrepareForProcess(ref context, runtimeMetadata);
if (result.IsFailure)
{
return result;
}
return _invoke(ref context, _processor, runtimeMetadata, inRawData, ref outHeader);
}
public static void GetCmifOutHeaderPointer(ref Span<CmifOutHeader> outHeader, ref Span<byte> outRawData)
{
outHeader = MemoryMarshal.Cast<byte, CmifOutHeader>(outRawData)[..1];
outRawData = outRawData[Unsafe.SizeOf<CmifOutHeader>()..];
}
}
}