Move solution and projects to src

5 files changed, 1010 insertions, 0 deletions

diff --git a/src/Ryujinx.Input.SDL2/Ryujinx.Input.SDL2.csproj b/src/Ryujinx.Input.SDL2/Ryujinx.Input.SDL2.csproj
new file mode 100644
index 00000000..817a96e2
--- /dev/null
+++ b/src/Ryujinx.Input.SDL2/Ryujinx.Input.SDL2.csproj
@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Ryujinx.Input\Ryujinx.Input.csproj" />
+    <ProjectReference Include="..\Ryujinx.SDL2.Common\Ryujinx.SDL2.Common.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/src/Ryujinx.Input.SDL2/SDL2Gamepad.cs b/src/Ryujinx.Input.SDL2/SDL2Gamepad.cs
new file mode 100644
index 00000000..92552673
--- /dev/null
+++ b/src/Ryujinx.Input.SDL2/SDL2Gamepad.cs
@@ -0,0 +1,376 @@
+using Ryujinx.Common.Configuration.Hid;
+using Ryujinx.Common.Configuration.Hid.Controller;
+using Ryujinx.Common.Logging;
+using System;
+using System.Collections.Generic;
+using System.Numerics;
+using static SDL2.SDL;
+
+namespace Ryujinx.Input.SDL2
+{
+    class SDL2Gamepad : IGamepad
+    {
+        private bool HasConfiguration => _configuration != null;
+
+        private record struct ButtonMappingEntry(GamepadButtonInputId To, GamepadButtonInputId From);
+
+        private StandardControllerInputConfig _configuration;
+
+        private static readonly SDL_GameControllerButton[] _buttonsDriverMapping = new SDL_GameControllerButton[(int)GamepadButtonInputId.Count]
+        {
+            // Unbound, ignored.
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_INVALID,
+
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_A,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_B,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_X,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_Y,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_LEFTSTICK,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_RIGHTSTICK,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_LEFTSHOULDER,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_RIGHTSHOULDER,
+
+            // NOTE: The left and right trigger are axis, we handle those differently
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_INVALID,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_INVALID,
+
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_DPAD_UP,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_DPAD_DOWN,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_DPAD_LEFT,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_DPAD_RIGHT,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_BACK,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_START,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_GUIDE,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_MISC1,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_PADDLE1,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_PADDLE2,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_PADDLE3,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_PADDLE4,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_TOUCHPAD,            
+
+            // Virtual buttons are invalid, ignored.
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_INVALID,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_INVALID,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_INVALID,
+            SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_INVALID,
+        };
+
+        private object _userMappingLock = new object();
+
+        private List<ButtonMappingEntry> _buttonsUserMapping;
+
+        private StickInputId[] _stickUserMapping = new StickInputId[(int)StickInputId.Count]
+        {
+            StickInputId.Unbound,
+            StickInputId.Left,
+            StickInputId.Right
+        };
+
+        public GamepadFeaturesFlag Features { get; }
+
+        private IntPtr _gamepadHandle;
+
+        private float _triggerThreshold;
+
+        public SDL2Gamepad(IntPtr gamepadHandle, string driverId)
+        {
+            _gamepadHandle = gamepadHandle;
+            _buttonsUserMapping = new List<ButtonMappingEntry>(20);
+
+            Name = SDL_GameControllerName(_gamepadHandle);
+            Id = driverId;
+            Features = GetFeaturesFlag();
+            _triggerThreshold = 0.0f;
+
+            // Enable motion tracking
+            if (Features.HasFlag(GamepadFeaturesFlag.Motion))
+            {
+                SDL_GameControllerSetSensorEnabled(_gamepadHandle, SDL_SensorType.SDL_SENSOR_ACCEL, SDL_bool.SDL_TRUE);
+                SDL_GameControllerSetSensorEnabled(_gamepadHandle, SDL_SensorType.SDL_SENSOR_GYRO, SDL_bool.SDL_TRUE);
+            }
+        }
+
+        private GamepadFeaturesFlag GetFeaturesFlag()
+        {
+            GamepadFeaturesFlag result = GamepadFeaturesFlag.None;
+
+            if (SDL_GameControllerHasSensor(_gamepadHandle, SDL_SensorType.SDL_SENSOR_ACCEL) == SDL_bool.SDL_TRUE &&
+                SDL_GameControllerHasSensor(_gamepadHandle, SDL_SensorType.SDL_SENSOR_GYRO) == SDL_bool.SDL_TRUE)
+            {
+                result |= GamepadFeaturesFlag.Motion;
+            }
+
+            int error = SDL_GameControllerRumble(_gamepadHandle, 0, 0, 100);
+
+            if (error == 0)
+            {
+                result |= GamepadFeaturesFlag.Rumble;
+            }
+
+            return result;
+        }
+
+        public string Id { get; }
+        public string Name { get; }
+
+        public bool IsConnected => SDL_GameControllerGetAttached(_gamepadHandle) == SDL_bool.SDL_TRUE;
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposing && _gamepadHandle != IntPtr.Zero)
+            {
+                SDL_GameControllerClose(_gamepadHandle);
+
+                _gamepadHandle = IntPtr.Zero;
+            }
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+        }
+
+        public void SetTriggerThreshold(float triggerThreshold)
+        {
+            _triggerThreshold = triggerThreshold;
+        }
+
+        public void Rumble(float lowFrequency, float highFrequency, uint durationMs)
+        {
+            if (Features.HasFlag(GamepadFeaturesFlag.Rumble))
+            {
+                ushort lowFrequencyRaw = (ushort)(lowFrequency * ushort.MaxValue);
+                ushort highFrequencyRaw = (ushort)(highFrequency * ushort.MaxValue);
+
+                if (durationMs == uint.MaxValue)
+                {
+                    SDL_GameControllerRumble(_gamepadHandle, lowFrequencyRaw, highFrequencyRaw, SDL_HAPTIC_INFINITY);
+                }
+                else if (durationMs > SDL_HAPTIC_INFINITY)
+                {
+                    Logger.Error?.Print(LogClass.Hid, $"Unsupported rumble duration {durationMs}");
+                }
+                else
+                {
+                    SDL_GameControllerRumble(_gamepadHandle, lowFrequencyRaw, highFrequencyRaw, durationMs);
+                }
+            }
+        }
+
+        public Vector3 GetMotionData(MotionInputId inputId)
+        {
+            SDL_SensorType sensorType = SDL_SensorType.SDL_SENSOR_INVALID;
+
+            if (inputId == MotionInputId.Accelerometer)
+            {
+                sensorType = SDL_SensorType.SDL_SENSOR_ACCEL;
+            }
+            else if (inputId == MotionInputId.Gyroscope)
+            {
+                sensorType = SDL_SensorType.SDL_SENSOR_GYRO;
+            }
+
+            if (Features.HasFlag(GamepadFeaturesFlag.Motion) && sensorType != SDL_SensorType.SDL_SENSOR_INVALID)
+            {
+                const int ElementCount = 3;
+
+                unsafe
+                {
+                    float* values = stackalloc float[ElementCount];
+
+                    int result = SDL_GameControllerGetSensorData(_gamepadHandle, sensorType, (IntPtr)values, ElementCount);
+
+                    if (result == 0)
+                    {
+                        Vector3 value = new Vector3(values[0], values[1], values[2]);
+
+                        if (inputId == MotionInputId.Gyroscope)
+                        {
+                            return RadToDegree(value);
+                        }
+                        else if (inputId == MotionInputId.Accelerometer)
+                        {
+                            return GsToMs2(value);
+                        }
+
+                        return value;
+                    }
+                }
+            }
+
+            return Vector3.Zero;
+        }
+
+        private static Vector3 RadToDegree(Vector3 rad)
+        {
+            return rad * (180 / MathF.PI);
+        }
+
+        private static Vector3 GsToMs2(Vector3 gs)
+        {
+            return gs / SDL_STANDARD_GRAVITY;
+        }
+
+        public void SetConfiguration(InputConfig configuration)
+        {
+            lock (_userMappingLock)
+            {
+                _configuration = (StandardControllerInputConfig)configuration;
+
+                _buttonsUserMapping.Clear();
+
+                // First update sticks
+                _stickUserMapping[(int)StickInputId.Left] = (StickInputId)_configuration.LeftJoyconStick.Joystick;
+                _stickUserMapping[(int)StickInputId.Right] = (StickInputId)_configuration.RightJoyconStick.Joystick;
+
+                // Then left joycon
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.LeftStick, (GamepadButtonInputId)_configuration.LeftJoyconStick.StickButton));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.DpadUp, (GamepadButtonInputId)_configuration.LeftJoycon.DpadUp));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.DpadDown, (GamepadButtonInputId)_configuration.LeftJoycon.DpadDown));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.DpadLeft, (GamepadButtonInputId)_configuration.LeftJoycon.DpadLeft));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.DpadRight, (GamepadButtonInputId)_configuration.LeftJoycon.DpadRight));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.Minus, (GamepadButtonInputId)_configuration.LeftJoycon.ButtonMinus));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.LeftShoulder, (GamepadButtonInputId)_configuration.LeftJoycon.ButtonL));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.LeftTrigger, (GamepadButtonInputId)_configuration.LeftJoycon.ButtonZl));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.SingleRightTrigger0, (GamepadButtonInputId)_configuration.LeftJoycon.ButtonSr));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.SingleLeftTrigger0, (GamepadButtonInputId)_configuration.LeftJoycon.ButtonSl));
+
+                // Finally right joycon
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.RightStick, (GamepadButtonInputId)_configuration.RightJoyconStick.StickButton));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.A, (GamepadButtonInputId)_configuration.RightJoycon.ButtonA));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.B, (GamepadButtonInputId)_configuration.RightJoycon.ButtonB));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.X, (GamepadButtonInputId)_configuration.RightJoycon.ButtonX));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.Y, (GamepadButtonInputId)_configuration.RightJoycon.ButtonY));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.Plus, (GamepadButtonInputId)_configuration.RightJoycon.ButtonPlus));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.RightShoulder, (GamepadButtonInputId)_configuration.RightJoycon.ButtonR));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.RightTrigger, (GamepadButtonInputId)_configuration.RightJoycon.ButtonZr));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.SingleRightTrigger1, (GamepadButtonInputId)_configuration.RightJoycon.ButtonSr));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.SingleLeftTrigger1, (GamepadButtonInputId)_configuration.RightJoycon.ButtonSl));
+
+                SetTriggerThreshold(_configuration.TriggerThreshold);
+            }
+        }
+
+        public GamepadStateSnapshot GetStateSnapshot()
+        {
+            return IGamepad.GetStateSnapshot(this);
+        }
+
+        public GamepadStateSnapshot GetMappedStateSnapshot()
+        {
+            GamepadStateSnapshot rawState = GetStateSnapshot();
+            GamepadStateSnapshot result = default;
+
+            lock (_userMappingLock)
+            {
+                if (_buttonsUserMapping.Count == 0)
+                {
+                    return rawState;
+                }
+
+                foreach (ButtonMappingEntry entry in _buttonsUserMapping)
+                {
+                    if (entry.From == GamepadButtonInputId.Unbound || entry.To == GamepadButtonInputId.Unbound)
+                    {
+                        continue;
+                    }
+
+                    // Do not touch state of button already pressed
+                    if (!result.IsPressed(entry.To))
+                    {
+                        result.SetPressed(entry.To, rawState.IsPressed(entry.From));
+                    }
+                }
+
+                (float leftStickX, float leftStickY) = rawState.GetStick(_stickUserMapping[(int)StickInputId.Left]);
+                (float rightStickX, float rightStickY) = rawState.GetStick(_stickUserMapping[(int)StickInputId.Right]);
+
+                result.SetStick(StickInputId.Left, leftStickX, leftStickY);
+                result.SetStick(StickInputId.Right, rightStickX, rightStickY);
+            }
+
+            return result;
+        }
+
+        private static float ConvertRawStickValue(short value)
+        {
+            const float ConvertRate = 1.0f / (short.MaxValue + 0.5f);
+
+            return value * ConvertRate;
+        }
+
+        public (float, float) GetStick(StickInputId inputId)
+        {
+            if (inputId == StickInputId.Unbound)
+            {
+                return (0.0f, 0.0f);
+            }
+
+            short stickX;
+            short stickY;
+
+            if (inputId == StickInputId.Left)
+            {
+                stickX = SDL_GameControllerGetAxis(_gamepadHandle, SDL_GameControllerAxis.SDL_CONTROLLER_AXIS_LEFTX);
+                stickY = SDL_GameControllerGetAxis(_gamepadHandle, SDL_GameControllerAxis.SDL_CONTROLLER_AXIS_LEFTY);
+            }
+            else if (inputId == StickInputId.Right)
+            {
+                stickX = SDL_GameControllerGetAxis(_gamepadHandle, SDL_GameControllerAxis.SDL_CONTROLLER_AXIS_RIGHTX);
+                stickY = SDL_GameControllerGetAxis(_gamepadHandle, SDL_GameControllerAxis.SDL_CONTROLLER_AXIS_RIGHTY);
+            }
+            else
+            {
+                throw new NotSupportedException($"Unsupported stick {inputId}");
+            }
+
+            float resultX = ConvertRawStickValue(stickX);
+            float resultY = -ConvertRawStickValue(stickY);
+
+            if (HasConfiguration)
+            {
+                if ((inputId == StickInputId.Left && _configuration.LeftJoyconStick.InvertStickX) ||
+                    (inputId == StickInputId.Right && _configuration.RightJoyconStick.InvertStickX))
+                {
+                    resultX = -resultX;
+                }
+
+                if ((inputId == StickInputId.Left && _configuration.LeftJoyconStick.InvertStickY) ||
+                    (inputId == StickInputId.Right && _configuration.RightJoyconStick.InvertStickY))
+                {
+                    resultY = -resultY;
+                }
+
+                if ((inputId == StickInputId.Left && _configuration.LeftJoyconStick.Rotate90CW) ||
+                    (inputId == StickInputId.Right && _configuration.RightJoyconStick.Rotate90CW))
+                {
+                    float temp = resultX;
+                    resultX = resultY;
+                    resultY = -temp;
+                }
+            }
+
+            return (resultX, resultY);
+        }
+
+        public bool IsPressed(GamepadButtonInputId inputId)
+        {
+            if (inputId == GamepadButtonInputId.LeftTrigger)
+            {
+                return ConvertRawStickValue(SDL_GameControllerGetAxis(_gamepadHandle, SDL_GameControllerAxis.SDL_CONTROLLER_AXIS_TRIGGERLEFT)) > _triggerThreshold;
+            }
+            else if (inputId == GamepadButtonInputId.RightTrigger)
+            {
+                return ConvertRawStickValue(SDL_GameControllerGetAxis(_gamepadHandle, SDL_GameControllerAxis.SDL_CONTROLLER_AXIS_TRIGGERRIGHT)) > _triggerThreshold;
+            }
+            else if (_buttonsDriverMapping[(int)inputId] == SDL_GameControllerButton.SDL_CONTROLLER_BUTTON_INVALID)
+            {
+                return false;
+            }
+            else
+            {
+                return SDL_GameControllerGetButton(_gamepadHandle, _buttonsDriverMapping[(int)inputId]) == 1;
+            }
+        }
+    }
+}
diff --git a/src/Ryujinx.Input.SDL2/SDL2GamepadDriver.cs b/src/Ryujinx.Input.SDL2/SDL2GamepadDriver.cs
new file mode 100644
index 00000000..d4086a10
--- /dev/null
+++ b/src/Ryujinx.Input.SDL2/SDL2GamepadDriver.cs
@@ -0,0 +1,148 @@
+using Ryujinx.SDL2.Common;
+using System;
+using System.Collections.Generic;
+using static SDL2.SDL;
+
+namespace Ryujinx.Input.SDL2
+{
+    public class SDL2GamepadDriver : IGamepadDriver
+    {
+        private Dictionary<int, string> _gamepadsInstanceIdsMapping;
+        private List<string> _gamepadsIds;
+
+        public ReadOnlySpan<string> GamepadsIds => _gamepadsIds.ToArray();
+
+        public string DriverName => "SDL2";
+
+        public event Action<string> OnGamepadConnected;
+        public event Action<string> OnGamepadDisconnected;
+
+        public SDL2GamepadDriver()
+        {
+            _gamepadsInstanceIdsMapping = new Dictionary<int, string>();
+            _gamepadsIds = new List<string>();
+
+            SDL2Driver.Instance.Initialize();
+            SDL2Driver.Instance.OnJoyStickConnected += HandleJoyStickConnected;
+            SDL2Driver.Instance.OnJoystickDisconnected += HandleJoyStickDisconnected;
+
+            // Add already connected gamepads
+            int numJoysticks = SDL_NumJoysticks();
+
+            for (int joystickIndex = 0; joystickIndex < numJoysticks; joystickIndex++)
+            {
+                HandleJoyStickConnected(joystickIndex, SDL_JoystickGetDeviceInstanceID(joystickIndex));
+            }
+        }
+
+        private string GenerateGamepadId(int joystickIndex)
+        {
+            Guid guid = SDL_JoystickGetDeviceGUID(joystickIndex);
+
+            if (guid == Guid.Empty)
+            {
+                return null;
+            }
+
+            return joystickIndex + "-" + guid.ToString();
+        }
+
+        private int GetJoystickIndexByGamepadId(string id)
+        {
+            string[] data = id.Split("-");
+
+            if (data.Length != 6 || !int.TryParse(data[0], out int joystickIndex))
+            {
+                return -1;
+            }
+
+            return joystickIndex;
+        }
+
+        private void HandleJoyStickDisconnected(int joystickInstanceId)
+        {
+            if (_gamepadsInstanceIdsMapping.TryGetValue(joystickInstanceId, out string id))
+            {
+                _gamepadsInstanceIdsMapping.Remove(joystickInstanceId);
+                _gamepadsIds.Remove(id);
+
+                OnGamepadDisconnected?.Invoke(id);
+            }
+        }
+
+        private void HandleJoyStickConnected(int joystickDeviceId, int joystickInstanceId)
+        {
+            if (SDL_IsGameController(joystickDeviceId) == SDL_bool.SDL_TRUE)
+            {
+                string id = GenerateGamepadId(joystickDeviceId);
+
+                if (id == null)
+                {
+                    return;
+                }
+
+                // Sometimes a JoyStick connected event fires after the app starts even though it was connected before
+                // so it is rejected to avoid doubling the entries.
+                if (_gamepadsIds.Contains(id))
+                {
+                    return;
+                }
+
+                if (_gamepadsInstanceIdsMapping.TryAdd(joystickInstanceId, id))
+                {
+                    _gamepadsIds.Add(id);
+
+                    OnGamepadConnected?.Invoke(id);
+                }
+            }
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                SDL2Driver.Instance.OnJoyStickConnected -= HandleJoyStickConnected;
+                SDL2Driver.Instance.OnJoystickDisconnected -= HandleJoyStickDisconnected;
+
+                // Simulate a full disconnect when disposing
+                foreach (string id in _gamepadsIds)
+                {
+                    OnGamepadDisconnected?.Invoke(id);
+                }
+
+                _gamepadsIds.Clear();
+
+                SDL2Driver.Instance.Dispose();
+            }
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+        }
+
+        public IGamepad GetGamepad(string id)
+        {
+            int joystickIndex = GetJoystickIndexByGamepadId(id);
+
+            if (joystickIndex == -1)
+            {
+                return null;
+            }
+
+            if (id != GenerateGamepadId(joystickIndex))
+            {
+                return null;
+            }
+
+            IntPtr gamepadHandle = SDL_GameControllerOpen(joystickIndex);
+
+            if (gamepadHandle == IntPtr.Zero)
+            {
+                return null;
+            }
+
+            return new SDL2Gamepad(gamepadHandle, id);
+        }
+    }
+}
diff --git a/src/Ryujinx.Input.SDL2/SDL2Keyboard.cs b/src/Ryujinx.Input.SDL2/SDL2Keyboard.cs
new file mode 100644
index 00000000..edadae15
--- /dev/null
+++ b/src/Ryujinx.Input.SDL2/SDL2Keyboard.cs
@@ -0,0 +1,419 @@
+using Ryujinx.Common.Configuration.Hid;
+using Ryujinx.Common.Configuration.Hid.Keyboard;
+using System;
+using System.Collections.Generic;
+using System.Numerics;
+using System.Runtime.CompilerServices;
+using static SDL2.SDL;
+
+using ConfigKey = Ryujinx.Common.Configuration.Hid.Key;
+
+namespace Ryujinx.Input.SDL2
+{
+    class SDL2Keyboard : IKeyboard
+    {
+        private class ButtonMappingEntry
+        {
+            public readonly GamepadButtonInputId To;
+            public readonly Key From;
+
+            public ButtonMappingEntry(GamepadButtonInputId to, Key from)
+            {
+                To = to;
+                From = from;
+            }
+        }
+
+        private object _userMappingLock = new object();
+
+        private readonly SDL2KeyboardDriver _driver;
+        private StandardKeyboardInputConfig _configuration;
+        private List<ButtonMappingEntry> _buttonsUserMapping;
+
+        private static readonly SDL_Keycode[] _keysDriverMapping = new SDL_Keycode[(int)Key.Count]
+        {
+            // INVALID
+            SDL_Keycode.SDLK_0,
+            // Presented as modifiers, so invalid here.
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+
+            SDL_Keycode.SDLK_F1,
+            SDL_Keycode.SDLK_F2,
+            SDL_Keycode.SDLK_F3,
+            SDL_Keycode.SDLK_F4,
+            SDL_Keycode.SDLK_F5,
+            SDL_Keycode.SDLK_F6,
+            SDL_Keycode.SDLK_F7,
+            SDL_Keycode.SDLK_F8,
+            SDL_Keycode.SDLK_F9,
+            SDL_Keycode.SDLK_F10,
+            SDL_Keycode.SDLK_F11,
+            SDL_Keycode.SDLK_F12,
+            SDL_Keycode.SDLK_F13,
+            SDL_Keycode.SDLK_F14,
+            SDL_Keycode.SDLK_F15,
+            SDL_Keycode.SDLK_F16,
+            SDL_Keycode.SDLK_F17,
+            SDL_Keycode.SDLK_F18,
+            SDL_Keycode.SDLK_F19,
+            SDL_Keycode.SDLK_F20,
+            SDL_Keycode.SDLK_F21,
+            SDL_Keycode.SDLK_F22,
+            SDL_Keycode.SDLK_F23,
+            SDL_Keycode.SDLK_F24,
+
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_0,
+
+            SDL_Keycode.SDLK_UP,
+            SDL_Keycode.SDLK_DOWN,
+            SDL_Keycode.SDLK_LEFT,
+            SDL_Keycode.SDLK_RIGHT,
+            SDL_Keycode.SDLK_RETURN,
+            SDL_Keycode.SDLK_ESCAPE,
+            SDL_Keycode.SDLK_SPACE,
+            SDL_Keycode.SDLK_TAB,
+            SDL_Keycode.SDLK_BACKSPACE,
+            SDL_Keycode.SDLK_INSERT,
+            SDL_Keycode.SDLK_DELETE,
+            SDL_Keycode.SDLK_PAGEUP,
+            SDL_Keycode.SDLK_PAGEDOWN,
+            SDL_Keycode.SDLK_HOME,
+            SDL_Keycode.SDLK_END,
+            SDL_Keycode.SDLK_CAPSLOCK,
+            SDL_Keycode.SDLK_SCROLLLOCK,
+            SDL_Keycode.SDLK_PRINTSCREEN,
+            SDL_Keycode.SDLK_PAUSE,
+            SDL_Keycode.SDLK_NUMLOCKCLEAR,
+            SDL_Keycode.SDLK_CLEAR,
+            SDL_Keycode.SDLK_KP_0,
+            SDL_Keycode.SDLK_KP_1,
+            SDL_Keycode.SDLK_KP_2,
+            SDL_Keycode.SDLK_KP_3,
+            SDL_Keycode.SDLK_KP_4,
+            SDL_Keycode.SDLK_KP_5,
+            SDL_Keycode.SDLK_KP_6,
+            SDL_Keycode.SDLK_KP_7,
+            SDL_Keycode.SDLK_KP_8,
+            SDL_Keycode.SDLK_KP_9,
+            SDL_Keycode.SDLK_KP_DIVIDE,
+            SDL_Keycode.SDLK_KP_MULTIPLY,
+            SDL_Keycode.SDLK_KP_MINUS,
+            SDL_Keycode.SDLK_KP_PLUS,
+            SDL_Keycode.SDLK_KP_DECIMAL,
+            SDL_Keycode.SDLK_KP_ENTER,
+            SDL_Keycode.SDLK_a,
+            SDL_Keycode.SDLK_b,
+            SDL_Keycode.SDLK_c,
+            SDL_Keycode.SDLK_d,
+            SDL_Keycode.SDLK_e,
+            SDL_Keycode.SDLK_f,
+            SDL_Keycode.SDLK_g,
+            SDL_Keycode.SDLK_h,
+            SDL_Keycode.SDLK_i,
+            SDL_Keycode.SDLK_j,
+            SDL_Keycode.SDLK_k,
+            SDL_Keycode.SDLK_l,
+            SDL_Keycode.SDLK_m,
+            SDL_Keycode.SDLK_n,
+            SDL_Keycode.SDLK_o,
+            SDL_Keycode.SDLK_p,
+            SDL_Keycode.SDLK_q,
+            SDL_Keycode.SDLK_r,
+            SDL_Keycode.SDLK_s,
+            SDL_Keycode.SDLK_t,
+            SDL_Keycode.SDLK_u,
+            SDL_Keycode.SDLK_v,
+            SDL_Keycode.SDLK_w,
+            SDL_Keycode.SDLK_x,
+            SDL_Keycode.SDLK_y,
+            SDL_Keycode.SDLK_z,
+            SDL_Keycode.SDLK_0,
+            SDL_Keycode.SDLK_1,
+            SDL_Keycode.SDLK_2,
+            SDL_Keycode.SDLK_3,
+            SDL_Keycode.SDLK_4,
+            SDL_Keycode.SDLK_5,
+            SDL_Keycode.SDLK_6,
+            SDL_Keycode.SDLK_7,
+            SDL_Keycode.SDLK_8,
+            SDL_Keycode.SDLK_9,
+            SDL_Keycode.SDLK_BACKQUOTE,
+            SDL_Keycode.SDLK_BACKQUOTE,
+            SDL_Keycode.SDLK_MINUS,
+            SDL_Keycode.SDLK_PLUS,
+            SDL_Keycode.SDLK_LEFTBRACKET,
+            SDL_Keycode.SDLK_RIGHTBRACKET,
+            SDL_Keycode.SDLK_SEMICOLON,
+            SDL_Keycode.SDLK_QUOTE,
+            SDL_Keycode.SDLK_COMMA,
+            SDL_Keycode.SDLK_PERIOD,
+            SDL_Keycode.SDLK_SLASH,
+            SDL_Keycode.SDLK_BACKSLASH,
+
+            // Invalids
+            SDL_Keycode.SDLK_0,
+        };
+
+        public SDL2Keyboard(SDL2KeyboardDriver driver, string id, string name)
+        {
+            _driver = driver;
+            Id = id;
+            Name = name;
+            _buttonsUserMapping = new List<ButtonMappingEntry>();
+        }
+
+        private bool HasConfiguration => _configuration != null;
+
+        public string Id { get; }
+
+        public string Name { get; }
+
+        public bool IsConnected => true;
+
+        public GamepadFeaturesFlag Features => GamepadFeaturesFlag.None;
+
+        public void Dispose()
+        {
+            // No operations
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private static int ToSDL2Scancode(Key key)
+        {
+            if (key >= Key.Unknown && key <= Key.Menu)
+            {
+                return -1;
+            }
+
+            return (int)SDL_GetScancodeFromKey(_keysDriverMapping[(int)key]);
+        }
+
+        private static SDL_Keymod GetKeyboardModifierMask(Key key)
+        {
+            switch (key)
+            {
+                case Key.ShiftLeft:
+                    return SDL_Keymod.KMOD_LSHIFT;
+                case Key.ShiftRight:
+                    return SDL_Keymod.KMOD_RSHIFT;
+                case Key.ControlLeft:
+                    return SDL_Keymod.KMOD_LCTRL;
+                case Key.ControlRight:
+                    return SDL_Keymod.KMOD_RCTRL;
+                case Key.AltLeft:
+                    return SDL_Keymod.KMOD_LALT;
+                case Key.AltRight:
+                    return SDL_Keymod.KMOD_RALT;
+                case Key.WinLeft:
+                    return SDL_Keymod.KMOD_LGUI;
+                case Key.WinRight:
+                    return SDL_Keymod.KMOD_RGUI;
+                // NOTE: Menu key isn't supported by SDL2.
+                case Key.Menu:
+                default:
+                    return SDL_Keymod.KMOD_NONE;
+            }
+        }
+
+        public KeyboardStateSnapshot GetKeyboardStateSnapshot()
+        {
+            ReadOnlySpan<byte> rawKeyboardState;
+            SDL_Keymod rawKeyboardModifierState = SDL_GetModState();
+
+            unsafe
+            {
+                IntPtr statePtr = SDL_GetKeyboardState(out int numKeys);
+
+                rawKeyboardState = new ReadOnlySpan<byte>((byte*)statePtr, numKeys);
+            }
+
+            bool[] keysState = new bool[(int)Key.Count];
+
+            for (Key key = 0; key < Key.Count; key++)
+            {
+                int index = ToSDL2Scancode(key);
+                if (index == -1)
+                {
+                    SDL_Keymod modifierMask = GetKeyboardModifierMask(key);
+
+                    if (modifierMask == SDL_Keymod.KMOD_NONE)
+                    {
+                        continue;
+                    }
+
+                    keysState[(int)key] = (rawKeyboardModifierState & modifierMask) == modifierMask;
+                }
+                else
+                {
+                    keysState[(int)key] = rawKeyboardState[index] == 1;
+                }
+            }
+
+            return new KeyboardStateSnapshot(keysState);
+        }
+
+        private static float ConvertRawStickValue(short value)
+        {
+            const float ConvertRate = 1.0f / (short.MaxValue + 0.5f);
+
+            return value * ConvertRate;
+        }
+
+        private static (short, short) GetStickValues(ref KeyboardStateSnapshot snapshot, JoyconConfigKeyboardStick<ConfigKey> stickConfig)
+        {
+            short stickX = 0;
+            short stickY = 0;
+
+            if (snapshot.IsPressed((Key)stickConfig.StickUp))
+            {
+                stickY += 1;
+            }
+
+            if (snapshot.IsPressed((Key)stickConfig.StickDown))
+            {
+                stickY -= 1;
+            }
+
+            if (snapshot.IsPressed((Key)stickConfig.StickRight))
+            {
+                stickX += 1;
+            }
+
+            if (snapshot.IsPressed((Key)stickConfig.StickLeft))
+            {
+                stickX -= 1;
+            }
+
+            Vector2 stick = Vector2.Normalize(new Vector2(stickX, stickY));
+
+            return ((short)(stick.X * short.MaxValue), (short)(stick.Y * short.MaxValue));
+        }
+
+        public GamepadStateSnapshot GetMappedStateSnapshot()
+        {
+            KeyboardStateSnapshot rawState = GetKeyboardStateSnapshot();
+            GamepadStateSnapshot result = default;
+
+            lock (_userMappingLock)
+            {
+                if (!HasConfiguration)
+                {
+                    return result;
+                }
+
+                foreach (ButtonMappingEntry entry in _buttonsUserMapping)
+                {
+                    if (entry.From == Key.Unknown || entry.From == Key.Unbound || entry.To == GamepadButtonInputId.Unbound)
+                    {
+                        continue;
+                    }
+
+                    // Do not touch state of button already pressed
+                    if (!result.IsPressed(entry.To))
+                    {
+                        result.SetPressed(entry.To, rawState.IsPressed(entry.From));
+                    }
+                }
+
+                (short leftStickX, short leftStickY) = GetStickValues(ref rawState, _configuration.LeftJoyconStick);
+                (short rightStickX, short rightStickY) = GetStickValues(ref rawState, _configuration.RightJoyconStick);
+
+                result.SetStick(StickInputId.Left, ConvertRawStickValue(leftStickX), ConvertRawStickValue(leftStickY));
+                result.SetStick(StickInputId.Right, ConvertRawStickValue(rightStickX), ConvertRawStickValue(rightStickY));
+            }
+
+            return result;
+        }
+
+        public GamepadStateSnapshot GetStateSnapshot()
+        {
+            throw new NotSupportedException();
+        }
+
+        public (float, float) GetStick(StickInputId inputId)
+        {
+            throw new NotSupportedException();
+        }
+
+        public bool IsPressed(GamepadButtonInputId inputId)
+        {
+            throw new NotSupportedException();
+        }
+
+        public bool IsPressed(Key key)
+        {
+            // We only implement GetKeyboardStateSnapshot.
+            throw new NotSupportedException();
+        }
+
+        public void SetConfiguration(InputConfig configuration)
+        {
+            lock (_userMappingLock)
+            {
+                _configuration = (StandardKeyboardInputConfig)configuration;
+
+                // First clear the buttons mapping
+                _buttonsUserMapping.Clear();
+
+                // Then configure left joycon
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.LeftStick, (Key)_configuration.LeftJoyconStick.StickButton));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.DpadUp, (Key)_configuration.LeftJoycon.DpadUp));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.DpadDown, (Key)_configuration.LeftJoycon.DpadDown));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.DpadLeft, (Key)_configuration.LeftJoycon.DpadLeft));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.DpadRight, (Key)_configuration.LeftJoycon.DpadRight));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.Minus, (Key)_configuration.LeftJoycon.ButtonMinus));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.LeftShoulder, (Key)_configuration.LeftJoycon.ButtonL));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.LeftTrigger, (Key)_configuration.LeftJoycon.ButtonZl));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.SingleRightTrigger0, (Key)_configuration.LeftJoycon.ButtonSr));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.SingleLeftTrigger0, (Key)_configuration.LeftJoycon.ButtonSl));
+
+                // Finally configure right joycon
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.RightStick, (Key)_configuration.RightJoyconStick.StickButton));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.A, (Key)_configuration.RightJoycon.ButtonA));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.B, (Key)_configuration.RightJoycon.ButtonB));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.X, (Key)_configuration.RightJoycon.ButtonX));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.Y, (Key)_configuration.RightJoycon.ButtonY));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.Plus, (Key)_configuration.RightJoycon.ButtonPlus));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.RightShoulder, (Key)_configuration.RightJoycon.ButtonR));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.RightTrigger, (Key)_configuration.RightJoycon.ButtonZr));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.SingleRightTrigger1, (Key)_configuration.RightJoycon.ButtonSr));
+                _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.SingleLeftTrigger1, (Key)_configuration.RightJoycon.ButtonSl));
+            }
+        }
+
+        public void SetTriggerThreshold(float triggerThreshold)
+        {
+            // No operations
+        }
+
+        public void Rumble(float lowFrequency, float highFrequency, uint durationMs)
+        {
+            // No operations
+        }
+
+        public Vector3 GetMotionData(MotionInputId inputId)
+        {
+            // No operations
+
+            return Vector3.Zero;
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Ryujinx.Input.SDL2/SDLKeyboardDriver.cs b/src/Ryujinx.Input.SDL2/SDLKeyboardDriver.cs
new file mode 100644
index 00000000..e9361c24
--- /dev/null
+++ b/src/Ryujinx.Input.SDL2/SDLKeyboardDriver.cs
@@ -0,0 +1,54 @@
+using Ryujinx.SDL2.Common;
+using System;
+
+namespace Ryujinx.Input.SDL2
+{
+    public class SDL2KeyboardDriver : IGamepadDriver
+    {
+        public SDL2KeyboardDriver()
+        {
+            SDL2Driver.Instance.Initialize();
+        }
+
+        public string DriverName => "SDL2";
+
+        private static readonly string[] _keyboardIdentifers = new string[1] { "0" };
+
+        public ReadOnlySpan<string> GamepadsIds => _keyboardIdentifers;
+
+        public event Action<string> OnGamepadConnected
+        {
+            add { }
+            remove { }
+        }
+
+        public event Action<string> OnGamepadDisconnected
+        {
+            add { }
+            remove { }
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                SDL2Driver.Instance.Dispose();
+            }
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+        }
+
+        public IGamepad GetGamepad(string id)
+        {
+            if (!_keyboardIdentifers[0].Equals(id))
+            {
+                return null;
+            }
+
+            return new SDL2Keyboard(this, _keyboardIdentifers[0], "All keyboards");
+        }
+    }
+}
\ No newline at end of file