mirror of
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701 lines
25 KiB
C#
701 lines
25 KiB
C#
#region License
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//
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// The Open Toolkit Library License
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//
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// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
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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 to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do
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// 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 all
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// 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,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN 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.Diagnostics;
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using System.Runtime.InteropServices;
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using System.Security;
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using System.Text;
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using Microsoft.Win32;
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using OpenTK.Input;
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namespace OpenTK.Platform.Windows
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{
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sealed class WinMMJoystick : IJoystickDriver, IJoystickDriver2
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{
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#region Fields
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readonly object sync = new object();
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List<JoystickDevice> sticks = new List<JoystickDevice>();
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IList<JoystickDevice> sticks_readonly;
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// Matches a WinMM device index to a specific stick above
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readonly Dictionary<int, int> index_to_stick =
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new Dictionary<int, int>();
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// Matches a player index to a WinMM device index
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readonly Dictionary<int, int> player_to_index =
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new Dictionary<int, int>();
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// Todo: Read the joystick name from the registry.
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//static readonly string RegistryJoyConfig = @"Joystick%dConfiguration";
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//static readonly string RegistryJoyName = @"Joystick%dOEMName";
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//static readonly string RegstryJoyCurrent = @"CurrentJoystickSettings";
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bool disposed;
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#endregion
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#region Constructors
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public WinMMJoystick()
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{
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sticks_readonly = sticks.AsReadOnly();
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RefreshDevices();
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}
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#endregion
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#region Internal Members
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internal void RefreshDevices()
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{
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for (int i = 0; i < sticks.Count; i++)
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{
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CloseJoystick(i);
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}
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// WinMM supports up to 16 joysticks.
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for (int i = 0; i < UnsafeNativeMethods.joyGetNumDevs(); i++)
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{
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OpenJoystick(i);
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}
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}
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#endregion
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#region Private Members
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JoystickDevice<WinMMJoyDetails> OpenJoystick(int number)
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{
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lock (sync)
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{
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JoystickDevice<WinMMJoyDetails> stick = null;
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JoyCaps caps;
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JoystickError result = UnsafeNativeMethods.joyGetDevCaps(number, out caps, JoyCaps.SizeInBytes);
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if (result == JoystickError.NoError)
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{
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if (caps.NumAxes > JoystickState.MaxAxes)
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{
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Debug.Print("[Input] Device has {0} axes, which is higher than OpenTK maximum {1}. Please report a bug at http://www.opentk.com",
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caps.NumAxes, JoystickState.MaxAxes);
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caps.NumAxes = JoystickState.MaxAxes;
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}
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if (caps.NumAxes > JoystickState.MaxButtons)
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{
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Debug.Print("[Input] Device has {0} buttons, which is higher than OpenTK maximum {1}. Please report a bug at http://www.opentk.com",
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caps.NumButtons, JoystickState.MaxButtons);
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caps.NumButtons = JoystickState.MaxButtons;
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}
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JoystickCapabilities joycaps = new JoystickCapabilities(
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caps.NumAxes,
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caps.NumButtons,
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(caps.Capabilities & JoystCapsFlags.HasPov) != 0 ? 1 : 0,
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true);
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int num_axes = caps.NumAxes;
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if ((caps.Capabilities & JoystCapsFlags.HasPov) != 0)
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num_axes += 2;
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stick = new JoystickDevice<WinMMJoyDetails>(number, num_axes, caps.NumButtons);
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stick.Details = new WinMMJoyDetails(joycaps);
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// Make sure to reverse the vertical axes, so that +1 points up and -1 points down.
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for (int axis = 0; axis < caps.NumAxes; axis++)
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{
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stick.Details.Min[axis] = caps.GetMin(axis);
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stick.Details.Max[axis] = caps.GetMax(axis);
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}
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if ((caps.Capabilities & JoystCapsFlags.HasPov) != 0)
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{
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stick.Details.PovType = PovType.Exists;
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if ((caps.Capabilities & JoystCapsFlags.HasPov4Dir) != 0)
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stick.Details.PovType |= PovType.Discrete;
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if ((caps.Capabilities & JoystCapsFlags.HasPovContinuous) != 0)
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stick.Details.PovType |= PovType.Continuous;
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}
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// Todo: Implement joystick name detection for WinMM.
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stick.Description = String.Format("Joystick/Joystick #{0} ({1} axes, {2} buttons)", number, stick.Axis.Count, stick.Button.Count);
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// Todo: Try to get the device name from the registry. Oh joy!
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//string key_path = String.Format("{0}\\{1}\\{2}", RegistryJoyConfig, caps.RegKey, RegstryJoyCurrent);
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//RegistryKey key = Registry.LocalMachine.OpenSubKey(key_path, false);
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//if (key == null)
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// key = Registry.CurrentUser.OpenSubKey(key_path, false);
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//if (key == null)
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// stick.Description = String.Format("USB Joystick {0} ({1} axes, {2} buttons)", number, stick.Axis.Count, stick.Button.Count);
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//else
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//{
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// key.Close();
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//}
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Debug.Print("Found joystick on device number {0}", number);
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index_to_stick.Add(number, sticks.Count);
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player_to_index.Add(player_to_index.Count, number);
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sticks.Add(stick);
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}
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return stick;
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}
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}
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void UnplugJoystick(int player_index)
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{
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// Reset the system configuration. Without this,
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// joysticks that are reconnected on different
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// ports are given different ids, making it
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// impossible to reconnect a disconnected user.
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UnsafeNativeMethods.joyConfigChanged(0);
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Debug.Print("[Win] WinMM joystick {0} unplugged", player_index);
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CloseJoystick(player_index);
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}
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void CloseJoystick(int player_index)
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{
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lock (sync)
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{
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if (IsValid(player_index))
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{
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int device_index = player_to_index[player_index];
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JoystickDevice<WinMMJoyDetails> stick =
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sticks[index_to_stick[device_index]] as JoystickDevice<WinMMJoyDetails>;
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if (stick != null)
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{
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index_to_stick.Remove(device_index);
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player_to_index.Remove(player_index);
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}
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}
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}
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}
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bool IsValid(int player_index)
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{
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if (player_to_index.ContainsKey(player_index))
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{
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return true;
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}
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//else if (index >= 0 && index < UnsafeNativeMethods.joyGetNumDevs())
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//{
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// return OpenJoystick(index) != null;
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//}
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return false;
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}
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static short CalculateOffset(int pos, int min, int max)
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{
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int offset = (ushort.MaxValue * (pos - min)) / (max - min) - short.MaxValue;
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return (short)offset;
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}
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#endregion
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#region IJoystickDriver
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public int DeviceCount
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{
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get { return sticks.Count; }
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}
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public IList<JoystickDevice> Joysticks
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{
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get { return sticks_readonly; }
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}
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public void Poll()
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{
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lock (sync)
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{
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foreach (JoystickDevice<WinMMJoyDetails> js in sticks)
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{
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JoyInfoEx info = new JoyInfoEx();
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info.Size = JoyInfoEx.SizeInBytes;
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info.Flags = JoystickFlags.All;
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UnsafeNativeMethods.joyGetPosEx(js.Id, ref info);
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int num_axes = js.Axis.Count;
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if ((js.Details.PovType & PovType.Exists) != 0)
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num_axes -= 2; // Because the last two axis are used for POV input.
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int axis = 0;
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if (axis < num_axes)
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{ js.SetAxis((JoystickAxis)axis, js.Details.CalculateOffset((float)info.XPos, axis)); axis++; }
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if (axis < num_axes)
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{ js.SetAxis((JoystickAxis)axis, js.Details.CalculateOffset((float)info.YPos, axis)); axis++; }
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if (axis < num_axes)
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{ js.SetAxis((JoystickAxis)axis, js.Details.CalculateOffset((float)info.ZPos, axis)); axis++; }
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if (axis < num_axes)
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{ js.SetAxis((JoystickAxis)axis, js.Details.CalculateOffset((float)info.RPos, axis)); axis++; }
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if (axis < num_axes)
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{ js.SetAxis((JoystickAxis)axis, js.Details.CalculateOffset((float)info.UPos, axis)); axis++; }
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if (axis < num_axes)
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{ js.SetAxis((JoystickAxis)axis, js.Details.CalculateOffset((float)info.VPos, axis)); axis++; }
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if ((js.Details.PovType & PovType.Exists) != 0)
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{
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float x = 0, y = 0;
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// A discrete POV returns specific values for left, right, etc.
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// A continuous POV returns an integer indicating an angle in degrees * 100, e.g. 18000 == 180.00 degrees.
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// The vast majority of joysticks have discrete POVs, so we'll treat all of them as discrete for simplicity.
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if ((JoystickPovPosition)info.Pov != JoystickPovPosition.Centered)
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{
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if (info.Pov > (int)JoystickPovPosition.Left || info.Pov < (int)JoystickPovPosition.Right)
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{ y = 1; }
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if ((info.Pov > (int)JoystickPovPosition.Forward) && (info.Pov < (int)JoystickPovPosition.Backward))
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{ x = 1; }
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if ((info.Pov > (int)JoystickPovPosition.Right) && (info.Pov < (int)JoystickPovPosition.Left))
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{ y = -1; }
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if (info.Pov > (int)JoystickPovPosition.Backward)
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{ x = -1; }
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}
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//if ((js.Details.PovType & PovType.Discrete) != 0)
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//{
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// if ((JoystickPovPosition)info.Pov == JoystickPovPosition.Centered)
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// { x = 0; y = 0; }
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// else if ((JoystickPovPosition)info.Pov == JoystickPovPosition.Forward)
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// { x = 0; y = -1; }
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// else if ((JoystickPovPosition)info.Pov == JoystickPovPosition.Left)
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// { x = -1; y = 0; }
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// else if ((JoystickPovPosition)info.Pov == JoystickPovPosition.Backward)
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// { x = 0; y = 1; }
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// else if ((JoystickPovPosition)info.Pov == JoystickPovPosition.Right)
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// { x = 1; y = 0; }
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//}
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//else if ((js.Details.PovType & PovType.Continuous) != 0)
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//{
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// if ((JoystickPovPosition)info.Pov == JoystickPovPosition.Centered)
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// {
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// // This approach moves the hat on a circle, not a square as it should.
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// float angle = (float)(System.Math.PI * info.Pov / 18000.0 + System.Math.PI / 2);
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// x = (float)System.Math.Cos(angle);
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// y = (float)System.Math.Sin(angle);
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// if (x < 0.001)
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// x = 0;
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// if (y < 0.001)
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// y = 0;
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// }
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//}
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//else
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// throw new NotImplementedException("Please post an issue report at http://www.opentk.com/issues");
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js.SetAxis((JoystickAxis)axis++, x);
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js.SetAxis((JoystickAxis)axis++, y);
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}
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int button = 0;
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while (button < js.Button.Count)
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{
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js.SetButton((JoystickButton)button, (info.Buttons & (1 << button)) != 0);
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button++;
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}
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}
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}
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}
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#endregion
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#region IJoystickDriver2 Members
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public JoystickCapabilities GetCapabilities(int player_index)
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{
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lock (sync)
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{
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if (IsValid(player_index))
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{
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int device_index = player_to_index[player_index];
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JoystickDevice<WinMMJoyDetails> stick =
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sticks[index_to_stick[device_index]] as JoystickDevice<WinMMJoyDetails>;
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return stick.Details.Capabilities;
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}
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return new JoystickCapabilities();
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}
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}
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public JoystickState GetState(int player_index)
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{
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lock (sync)
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{
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JoystickState state = new JoystickState();
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if (IsValid(player_index))
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{
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int device_index = player_to_index[player_index];
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int index = index_to_stick[device_index];
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JoystickDevice<WinMMJoyDetails> stick =
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sticks[index] as JoystickDevice<WinMMJoyDetails>;
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// For joysticks with fewer than three axes or four buttons, we must
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// use joyGetPos; otherwise, joyGetPosEx. This is not just a cosmetic
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// difference, simple devices will return incorrect results if we use
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// joyGetPosEx on them.
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if (stick.Details.Capabilities.AxisCount <= 3 || stick.Details.Capabilities.ButtonCount <= 4)
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{
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// Use joyGetPos
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JoyInfo info = new JoyInfo();
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JoystickError result = UnsafeNativeMethods.joyGetPos(device_index, ref info);
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if (result == JoystickError.NoError)
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{
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for (int i = 0; i < stick.Details.Capabilities.AxisCount; i++)
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{
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state.SetAxis(JoystickAxis.Axis0 + i, CalculateOffset(info.GetAxis(i), stick.Details.Min[i], stick.Details.Max[i]));
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}
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for (int i = 0; i < stick.Details.Capabilities.ButtonCount; i++)
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{
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state.SetButton(JoystickButton.Button0 + i, (info.Buttons & 1 << i) != 0);
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}
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state.SetIsConnected(true);
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}
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else if (result == JoystickError.Unplugged)
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{
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UnplugJoystick(player_index);
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}
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}
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else
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{
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// Use joyGetPosEx
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JoyInfoEx info = new JoyInfoEx();
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info.Size = JoyInfoEx.SizeInBytes;
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info.Flags = JoystickFlags.All;
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JoystickError result = UnsafeNativeMethods.joyGetPosEx(device_index, ref info);
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if (result == JoystickError.NoError)
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{
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for (int i = 0; i < stick.Details.Capabilities.AxisCount; i++)
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{
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state.SetAxis(JoystickAxis.Axis0 + i, CalculateOffset(info.GetAxis(i), stick.Details.Min[i], stick.Details.Max[i]));
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}
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for (int i = 0; i < stick.Details.Capabilities.ButtonCount; i++)
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{
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state.SetButton(JoystickButton.Button0 + i, (info.Buttons & 1 << i) != 0);
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}
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state.SetIsConnected(true);
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}
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else if (result == JoystickError.Unplugged)
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{
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UnplugJoystick(player_index);
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}
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}
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}
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return state;
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}
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}
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public Guid GetGuid(int index)
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{
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lock (sync)
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{
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Guid guid = new Guid();
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if (IsValid(index))
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{
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// Todo: implement WinMM Guid retrieval
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}
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return guid;
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}
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}
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#endregion
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#region IDisposable
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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 (!disposed)
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{
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if (manual)
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{
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}
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disposed = true;
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}
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}
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~WinMMJoystick()
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{
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Dispose(false);
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}
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#endregion
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#region UnsafeNativeMethods
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[Flags]
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enum JoystickFlags
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{
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X = 0x1,
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Y = 0x2,
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Z = 0x4,
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R = 0x8,
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U = 0x10,
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V = 0x20,
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Pov = 0x40,
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Buttons = 0x80,
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All = X | Y | Z | R | U | V | Pov | Buttons
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}
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enum JoystickError : uint
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{
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NoError = 0,
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InvalidParameters = 165,
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NoCanDo = 166,
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Unplugged = 167
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//MM_NoDriver = 6,
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//MM_InvalidParameter = 11
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}
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[Flags]
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enum JoystCapsFlags
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{
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HasZ = 0x1,
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HasR = 0x2,
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HasU = 0x4,
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HasV = 0x8,
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HasPov = 0x16,
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HasPov4Dir = 0x32,
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HasPovContinuous = 0x64
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}
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enum JoystickPovPosition : ushort
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{
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Centered = 0xFFFF,
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Forward = 0,
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Right = 9000,
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Backward = 18000,
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Left = 27000
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}
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struct JoyCaps
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{
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public ushort Mid;
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public ushort ProductId;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
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public string ProductName;
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public int XMin;
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public int XMax;
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public int YMin;
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public int YMax;
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public int ZMin;
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public int ZMax;
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public int NumButtons;
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public int PeriodMin;
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public int PeriodMax;
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public int RMin;
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public int RMax;
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|
public int UMin;
|
|
public int UMax;
|
|
public int VMin;
|
|
public int VMax;
|
|
public JoystCapsFlags Capabilities;
|
|
public int MaxAxes;
|
|
public int NumAxes;
|
|
public int MaxButtons;
|
|
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
|
|
public string RegKey;
|
|
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
|
|
public string OemVxD;
|
|
|
|
public static readonly int SizeInBytes;
|
|
|
|
static JoyCaps()
|
|
{
|
|
SizeInBytes = Marshal.SizeOf(default(JoyCaps));
|
|
}
|
|
|
|
public int GetMin(int i)
|
|
{
|
|
switch (i)
|
|
{
|
|
case 0: return XMin;
|
|
case 1: return YMin;
|
|
case 2: return ZMin;
|
|
case 3: return RMin;
|
|
case 4: return UMin;
|
|
case 5: return VMin;
|
|
default: return 0;
|
|
}
|
|
}
|
|
|
|
public int GetMax(int i)
|
|
{
|
|
switch (i)
|
|
{
|
|
case 0: return XMax;
|
|
case 1: return YMax;
|
|
case 2: return ZMax;
|
|
case 3: return RMax;
|
|
case 4: return UMax;
|
|
case 5: return VMax;
|
|
default: return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
struct JoyInfo
|
|
{
|
|
public int XPos;
|
|
public int YPos;
|
|
public int ZPos;
|
|
public uint Buttons;
|
|
|
|
public int GetAxis(int i)
|
|
{
|
|
switch (i)
|
|
{
|
|
case 0: return XPos;
|
|
case 1: return YPos;
|
|
case 2: return ZPos;
|
|
default: return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
struct JoyInfoEx
|
|
{
|
|
public int Size;
|
|
[MarshalAs(UnmanagedType.I4)]
|
|
public JoystickFlags Flags;
|
|
public int XPos;
|
|
public int YPos;
|
|
public int ZPos;
|
|
public int RPos;
|
|
public int UPos;
|
|
public int VPos;
|
|
public uint Buttons;
|
|
public uint ButtonNumber;
|
|
public int Pov;
|
|
#pragma warning disable 0169
|
|
uint Reserved1;
|
|
uint Reserved2;
|
|
#pragma warning restore 0169
|
|
|
|
public static readonly int SizeInBytes;
|
|
|
|
static JoyInfoEx()
|
|
{
|
|
SizeInBytes = Marshal.SizeOf(default(JoyInfoEx));
|
|
}
|
|
|
|
public int GetAxis(int i)
|
|
{
|
|
switch (i)
|
|
{
|
|
case 0: return XPos;
|
|
case 1: return YPos;
|
|
case 2: return ZPos;
|
|
case 3: return RPos;
|
|
case 4: return UPos;
|
|
case 5: return VPos;
|
|
default: return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
static class UnsafeNativeMethods
|
|
{
|
|
[DllImport("Winmm.dll"), SuppressUnmanagedCodeSecurity]
|
|
public static extern JoystickError joyGetDevCaps(int uJoyID, out JoyCaps pjc, int cbjc);
|
|
[DllImport("Winmm.dll"), SuppressUnmanagedCodeSecurity]
|
|
public static extern JoystickError joyGetPos(int uJoyID, ref JoyInfo pji);
|
|
[DllImport("Winmm.dll"), SuppressUnmanagedCodeSecurity]
|
|
public static extern JoystickError joyGetPosEx(int uJoyID, ref JoyInfoEx pji);
|
|
[DllImport("Winmm.dll"), SuppressUnmanagedCodeSecurity]
|
|
public static extern int joyGetNumDevs();
|
|
[DllImport("Winmm.dll"), SuppressUnmanagedCodeSecurity]
|
|
public static extern JoystickError joyConfigChanged(int flags);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region enum PovType
|
|
|
|
[Flags]
|
|
enum PovType
|
|
{
|
|
None = 0x0,
|
|
Exists = 0x1,
|
|
Discrete = 0x2,
|
|
Continuous = 0x4
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region struct WinMMJoyDetails
|
|
|
|
struct WinMMJoyDetails
|
|
{
|
|
public readonly int[] Min, Max; // Minimum and maximum offset of each axis.
|
|
public PovType PovType;
|
|
public JoystickCapabilities Capabilities;
|
|
|
|
public WinMMJoyDetails(JoystickCapabilities caps)
|
|
: this()
|
|
{
|
|
Min = new int[caps.AxisCount];
|
|
Max = new int[caps.AxisCount];
|
|
Capabilities = caps;
|
|
}
|
|
|
|
public float CalculateOffset(float pos, int axis)
|
|
{
|
|
float offset = (2 * (pos - Min[axis])) / (Max[axis] - Min[axis]) - 1;
|
|
if (offset > 1)
|
|
return 1;
|
|
else if (offset < -1)
|
|
return -1;
|
|
else if (offset < 0.001f && offset > -0.001f)
|
|
return 0;
|
|
else
|
|
return offset;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
}
|