Ryujinx/Ryujinx.HLE/HOS/Applets/Controller/ControllerApplet.cs

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C#
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using System;
using System.IO;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using Ryujinx.Common.Logging;
using Ryujinx.HLE.HOS.Services.Hid;
using Ryujinx.HLE.HOS.Services.Am.AppletAE;
using static Ryujinx.HLE.HOS.Services.Hid.HidServer.HidUtils;
namespace Ryujinx.HLE.HOS.Applets
{
internal class ControllerApplet : IApplet
{
private Horizon _system;
private AppletSession _normalSession;
public event EventHandler AppletStateChanged;
public ControllerApplet(Horizon system)
{
_system = system;
}
unsafe public ResultCode Start(AppletSession normalSession,
AppletSession interactiveSession)
{
_normalSession = normalSession;
byte[] launchParams = _normalSession.Pop();
byte[] controllerSupportArgPrivate = _normalSession.Pop();
ControllerSupportArgPrivate privateArg = IApplet.ReadStruct<ControllerSupportArgPrivate>(controllerSupportArgPrivate);
Logger.PrintStub(LogClass.ServiceHid, $"ControllerApplet ArgPriv {privateArg.PrivateSize} {privateArg.ArgSize} {privateArg.Mode}" +
$"HoldType:{(NpadJoyHoldType)privateArg.NpadJoyHoldType} StyleSets:{(ControllerType)privateArg.NpadStyleSet}");
if (privateArg.Mode != ControllerSupportMode.ShowControllerSupport)
{
_normalSession.Push(BuildResponse()); // Dummy response for other modes
AppletStateChanged?.Invoke(this, null);
return ResultCode.Success;
}
byte[] controllerSupportArg = _normalSession.Pop();
ControllerSupportArgHeader argHeader;
if (privateArg.ArgSize == Marshal.SizeOf<ControllerSupportArg>())
{
ControllerSupportArg arg = IApplet.ReadStruct<ControllerSupportArg>(controllerSupportArg);
argHeader = arg.Header;
// Read enable text here?
}
else
{
Logger.PrintStub(LogClass.ServiceHid, $"Unknown revision of ControllerSupportArg.");
argHeader = IApplet.ReadStruct<ControllerSupportArgHeader>(controllerSupportArg); // Read just the header
}
Logger.PrintStub(LogClass.ServiceHid, $"ControllerApplet Arg {argHeader.PlayerCountMin} {argHeader.PlayerCountMax} {argHeader.EnableTakeOverConnection} {argHeader.EnableSingleMode}");
// Currently, the only purpose of this applet is to help
// choose the primary input controller for the game
// TODO: Ideally should hook back to HID.Controller. When applet is called, can choose appropriate controller and attach to appropriate id.
if (argHeader.PlayerCountMin > 1)
{
Logger.PrintWarning(LogClass.ServiceHid, "More than one controller was requested.");
}
ControllerSupportResultInfo result = new ControllerSupportResultInfo
{
PlayerCount = 1,
SelectedId = (uint)GetNpadIdTypeFromIndex(_system.Device.Hid.Npads.PrimaryController)
};
Logger.PrintStub(LogClass.ServiceHid, $"ControllerApplet ReturnResult {result.PlayerCount} {result.SelectedId}");
_normalSession.Push(BuildResponse(result));
AppletStateChanged?.Invoke(this, null);
return ResultCode.Success;
}
public ResultCode GetResult()
{
return ResultCode.Success;
}
private byte[] BuildResponse(ControllerSupportResultInfo result)
{
using (MemoryStream stream = new MemoryStream())
using (BinaryWriter writer = new BinaryWriter(stream))
{
writer.Write(MemoryMarshal.AsBytes(MemoryMarshal.CreateReadOnlySpan(ref result, Unsafe.SizeOf<ControllerSupportResultInfo>())));
return stream.ToArray();
}
}
private byte[] BuildResponse()
{
using (MemoryStream stream = new MemoryStream())
using (BinaryWriter writer = new BinaryWriter(stream))
{
writer.Write((ulong)ResultCode.Success);
return stream.ToArray();
}
}
}
}