mirror of
https://github.com/Ryujinx/Opentk.git
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2de9c0b907
Fixes #209. Negating short.MinValue would cause a wrap around back to short.MinValue. This resulted in joystick inputs like 0.8, 0.9, -1.00031.
476 lines
16 KiB
C#
476 lines
16 KiB
C#
#region License
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//
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// XInputJoystick.cs
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//
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// Author:
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// Stefanos A. <stapostol@gmail.com>
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//
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// Copyright (c) 2006-2013 Stefanos Apostolopoulos
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Text;
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using OpenTK.Input;
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using System.Runtime.InteropServices;
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using System.Security;
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using System.Diagnostics;
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namespace OpenTK.Platform.Windows
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{
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class XInputJoystick : IJoystickDriver2, IDisposable
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{
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// All XInput devices use the same Guid
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// (only one GamePadConfiguration entry required)
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static readonly Guid guid =
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new Guid("78696e70757400000000000000000000"); // equiv. to "xinput"
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XInput xinput = new XInput();
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#region IJoystickDriver2 Members
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public JoystickState GetState(int index)
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{
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XInputState xstate;
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XInputErrorCode error = xinput.GetState((XInputUserIndex)index, out xstate);
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JoystickState state = new JoystickState();
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if (error == XInputErrorCode.Success)
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{
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state.SetIsConnected(true);
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state.SetAxis(JoystickAxis.Axis0, (short)xstate.GamePad.ThumbLX);
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state.SetAxis(JoystickAxis.Axis1, (short)Math.Min(short.MaxValue, -xstate.GamePad.ThumbLY));
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state.SetAxis(JoystickAxis.Axis2, (short)Common.HidHelper.ScaleValue(xstate.GamePad.LeftTrigger, 0, byte.MaxValue, short.MinValue, short.MaxValue));
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state.SetAxis(JoystickAxis.Axis3, (short)xstate.GamePad.ThumbRX);
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state.SetAxis(JoystickAxis.Axis4, (short)Math.Min(short.MaxValue, -xstate.GamePad.ThumbRY));
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state.SetAxis(JoystickAxis.Axis5, (short)Common.HidHelper.ScaleValue(xstate.GamePad.RightTrigger, 0, byte.MaxValue, short.MinValue, short.MaxValue));
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state.SetButton(JoystickButton.Button0, (xstate.GamePad.Buttons & XInputButtons.A) != 0);
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state.SetButton(JoystickButton.Button1, (xstate.GamePad.Buttons & XInputButtons.B) != 0);
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state.SetButton(JoystickButton.Button2, (xstate.GamePad.Buttons & XInputButtons.X) != 0);
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state.SetButton(JoystickButton.Button3, (xstate.GamePad.Buttons & XInputButtons.Y) != 0);
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state.SetButton(JoystickButton.Button4, (xstate.GamePad.Buttons & XInputButtons.LeftShoulder) != 0);
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state.SetButton(JoystickButton.Button5, (xstate.GamePad.Buttons & XInputButtons.RightShoulder) != 0);
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state.SetButton(JoystickButton.Button6, (xstate.GamePad.Buttons & XInputButtons.Back) != 0);
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state.SetButton(JoystickButton.Button7, (xstate.GamePad.Buttons & XInputButtons.Start) != 0);
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state.SetButton(JoystickButton.Button8, (xstate.GamePad.Buttons & XInputButtons.LeftThumb) != 0);
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state.SetButton(JoystickButton.Button9, (xstate.GamePad.Buttons & XInputButtons.RightThumb) != 0);
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state.SetButton(JoystickButton.Button10, (xstate.GamePad.Buttons & XInputButtons.Guide) != 0);
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state.SetHat(JoystickHat.Hat0, new JoystickHatState(TranslateHat(xstate.GamePad.Buttons)));
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}
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return state;
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}
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private HatPosition TranslateHat(XInputButtons buttons)
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{
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XInputButtons dir = 0;
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dir =XInputButtons.DPadUp | XInputButtons.DPadLeft;
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if ((buttons & dir) == dir)
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return HatPosition.UpLeft;
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dir = XInputButtons.DPadUp | XInputButtons.DPadRight;
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if ((buttons & dir) == dir)
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return HatPosition.UpRight;
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dir = XInputButtons.DPadDown | XInputButtons.DPadLeft;
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if ((buttons & dir) == dir)
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return HatPosition.DownLeft;
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dir = XInputButtons.DPadDown | XInputButtons.DPadRight;
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if ((buttons & dir) == dir)
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return HatPosition.DownRight;
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dir = XInputButtons.DPadUp;
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if ((buttons & dir) == dir)
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return HatPosition.Up;
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dir = XInputButtons.DPadRight;
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if ((buttons & dir) == dir)
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return HatPosition.Right;
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dir = XInputButtons.DPadDown;
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if ((buttons & dir) == dir)
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return HatPosition.Down;
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dir = XInputButtons.DPadLeft;
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if ((buttons & dir) == dir)
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return HatPosition.Left;
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return HatPosition.Centered;
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}
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public JoystickCapabilities GetCapabilities(int index)
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{
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XInputDeviceCapabilities xcaps;
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XInputErrorCode error = xinput.GetCapabilities(
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(XInputUserIndex)index,
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XInputCapabilitiesFlags.Default,
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out xcaps);
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if (error == XInputErrorCode.Success)
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{
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//GamePadType type = TranslateSubType(xcaps.SubType);
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int buttons = TranslateButtons(xcaps.GamePad.Buttons);
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int axes = TranslateAxes(ref xcaps.GamePad);
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return new JoystickCapabilities(axes, buttons, 0, true);
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}
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return new JoystickCapabilities();
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}
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public string GetName(int index)
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{
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return String.Empty;
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}
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public Guid GetGuid(int index)
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{
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return guid;
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}
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public bool SetVibration(int index, float left, float right)
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{
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left = MathHelper.Clamp(left, 0.0f, 1.0f);
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right = MathHelper.Clamp(right, 0.0f, 1.0f);
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XInputVibration vibration = new XInputVibration(
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(ushort)(left * UInt16.MaxValue),
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(ushort)(right * UInt16.MaxValue));
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return xinput.SetState((XInputUserIndex)index, ref vibration) == XInputErrorCode.Success;
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}
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#endregion
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#region Private Members
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int TranslateAxes(ref XInputGamePad pad)
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{
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int count = 0;
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count += pad.ThumbLX != 0 ? 1 : 0;
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count += pad.ThumbLY != 0 ? 1 : 0;
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count += pad.ThumbRX != 0 ? 1 : 0;
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count += pad.ThumbRY != 0 ? 1 : 0;
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count += pad.LeftTrigger != 0 ? 1 : 0;
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count += pad.RightTrigger != 0 ? 1 : 0;
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return count;
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}
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int NumberOfSetBits(int i)
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{
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i = i - ((i >> 1) & 0x55555555);
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i = (i & 0x33333333) + ((i >> 2) & 0x33333333);
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return (((i + (i >> 4)) & 0x0F0F0F0F) * 0x01010101) >> 24;
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}
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int TranslateButtons(XInputButtons xbuttons)
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{
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return NumberOfSetBits((int)xbuttons);
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}
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#if false
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// Todo: Implement JoystickType enumeration
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GamePadType TranslateSubType(XInputDeviceSubType xtype)
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{
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switch (xtype)
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{
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case XInputDeviceSubType.ArcadePad: return GamePadType.ArcadePad;
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case XInputDeviceSubType.ArcadeStick: return GamePadType.ArcadeStick;
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case XInputDeviceSubType.DancePad: return GamePadType.DancePad;
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case XInputDeviceSubType.DrumKit: return GamePadType.DrumKit;
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case XInputDeviceSubType.FlightStick: return GamePadType.FlightStick;
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case XInputDeviceSubType.GamePad: return GamePadType.GamePad;
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case XInputDeviceSubType.Guitar: return GamePadType.Guitar;
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case XInputDeviceSubType.GuitarAlternate: return GamePadType.AlternateGuitar;
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case XInputDeviceSubType.GuitarBass: return GamePadType.BassGuitar;
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case XInputDeviceSubType.Wheel: return GamePadType.Wheel;
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case XInputDeviceSubType.Unknown:
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default:
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return GamePadType.Unknown;
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}
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}
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#endif
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enum XInputErrorCode
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{
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Success = 0,
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DeviceNotConnected
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}
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enum XInputDeviceType : byte
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{
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GamePad
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}
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enum XInputDeviceSubType : byte
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{
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Unknown = 0,
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GamePad = 1,
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Wheel = 2,
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ArcadeStick = 3,
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FlightStick = 4,
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DancePad = 5,
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Guitar = 6,
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GuitarAlternate = 7,
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DrumKit = 8,
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GuitarBass = 0xb,
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ArcadePad = 0x13
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}
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enum XInputCapabilities
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{
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ForceFeedback = 0x0001,
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Wireless = 0x0002,
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Voice = 0x0004,
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PluginModules = 0x0008,
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NoNavigation = 0x0010,
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}
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enum XInputButtons : ushort
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{
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DPadUp = 0x0001,
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DPadDown = 0x0002,
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DPadLeft = 0x0004,
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DPadRight = 0x0008,
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Start = 0x0010,
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Back = 0x0020,
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LeftThumb = 0x0040,
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RightThumb = 0x0080,
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LeftShoulder = 0x0100,
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RightShoulder = 0x0200,
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Guide = 0x0400, // Undocumented, requires XInputGetStateEx + XINPUT_1_3.dll or higher
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A = 0x1000,
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B = 0x2000,
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X = 0x4000,
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Y = 0x8000
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}
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[Flags]
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enum XInputCapabilitiesFlags
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{
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Default = 0,
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GamePadOnly = 1
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}
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enum XInputBatteryType : byte
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{
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Disconnected = 0x00,
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Wired = 0x01,
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Alkaline = 0x02,
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NiMH = 0x03,
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Unknown = 0xff
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}
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enum XInputBatteryLevel : byte
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{
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Empty = 0x00,
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Low = 0x01,
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Medium = 0x02,
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Full = 0x03
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}
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enum XInputUserIndex
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{
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First = 0,
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Second,
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Third,
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Fourth,
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Any = 0xff
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}
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#pragma warning disable 0649 // field is never assigned
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struct XInputThresholds
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{
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public const int LeftThumbDeadzone = 7849;
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public const int RightThumbDeadzone = 8689;
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public const int TriggerThreshold = 30;
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}
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struct XInputGamePad
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{
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public XInputButtons Buttons;
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public byte LeftTrigger;
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public byte RightTrigger;
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public short ThumbLX;
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public short ThumbLY;
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public short ThumbRX;
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public short ThumbRY;
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}
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struct XInputState
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{
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public int PacketNumber;
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public XInputGamePad GamePad;
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}
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struct XInputVibration
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{
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public ushort LeftMotorSpeed;
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public ushort RightMotorSpeed;
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public XInputVibration(ushort left, ushort right)
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{
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LeftMotorSpeed = left;
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RightMotorSpeed = right;
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}
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}
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struct XInputDeviceCapabilities
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{
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public XInputDeviceType Type;
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public XInputDeviceSubType SubType;
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public short Flags;
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public XInputGamePad GamePad;
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public XInputVibration Vibration;
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}
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struct XInputBatteryInformation
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{
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public XInputBatteryType Type;
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public XInputBatteryLevel Level;
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}
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class XInput : IDisposable
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{
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IntPtr dll;
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internal XInput()
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{
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// Try to load the newest XInput***.dll installed on the system
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// The delegates below will be loaded dynamically from that dll
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dll = Functions.LoadLibrary("XINPUT1_4");
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if (dll == IntPtr.Zero)
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dll = Functions.LoadLibrary("XINPUT1_3");
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if (dll == IntPtr.Zero)
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dll = Functions.LoadLibrary("XINPUT1_2");
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if (dll == IntPtr.Zero)
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dll = Functions.LoadLibrary("XINPUT1_1");
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if (dll == IntPtr.Zero)
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dll = Functions.LoadLibrary("XINPUT9_1_0");
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if (dll == IntPtr.Zero)
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throw new NotSupportedException("XInput was not found on this platform");
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// Load the entry points we are interested in from that dll
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GetCapabilities = (XInputGetCapabilities)Load("XInputGetCapabilities", typeof(XInputGetCapabilities));
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GetState =
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// undocumented XInputGetStateEx with support for the "Guide" button (requires XINPUT_1_3+)
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(XInputGetState)Load("XInputGetStateEx", typeof(XInputGetState)) ??
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// documented XInputGetState (no support for the "Guide" button)
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(XInputGetState)Load("XInputGetState", typeof(XInputGetState));
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SetState = (XInputSetState)Load("XInputSetState", typeof(XInputSetState));
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}
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#region Private Members
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Delegate Load(string name, Type type)
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{
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IntPtr pfunc = Functions.GetProcAddress(dll, name);
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if (pfunc != IntPtr.Zero)
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return Marshal.GetDelegateForFunctionPointer(pfunc, type);
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return null;
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}
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#endregion
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#region Internal Members
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internal XInputGetCapabilities GetCapabilities;
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internal XInputGetState GetState;
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internal XInputSetState SetState;
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[SuppressUnmanagedCodeSecurity]
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internal delegate XInputErrorCode XInputGetCapabilities(
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XInputUserIndex dwUserIndex,
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XInputCapabilitiesFlags dwFlags,
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out XInputDeviceCapabilities pCapabilities);
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[SuppressUnmanagedCodeSecurity]
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internal delegate XInputErrorCode XInputGetState
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(
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XInputUserIndex dwUserIndex,
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out XInputState pState
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);
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[SuppressUnmanagedCodeSecurity]
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internal delegate XInputErrorCode XInputSetState
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(
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XInputUserIndex dwUserIndex,
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ref XInputVibration pVibration
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);
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#endregion
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#region IDisposable Members
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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void Dispose(bool manual)
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{
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if (manual)
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{
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if (dll != IntPtr.Zero)
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{
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Functions.FreeLibrary(dll);
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dll = IntPtr.Zero;
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}
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}
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}
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#endregion
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}
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#endregion
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#region IDisposable Members
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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void Dispose(bool manual)
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{
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if (manual)
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{
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xinput.Dispose();
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}
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else
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{
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Debug.Print("{0} leaked, did you forget to call Dispose()?", typeof(XInputJoystick).Name);
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}
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}
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#if DEBUG
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~XInputJoystick()
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{
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Dispose(false);
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}
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#endif
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#endregion
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}
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}
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