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[X11] Implemented joystick hotplugging

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This is a work in progress.
This commit is contained in:
Stefanos A. 2014-01-14 18:37:16 +01:00
parent b004dc7a0a
commit 4473c8373e
1 changed files with 118 additions and 50 deletions
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164
Source/OpenTK/Platform/X11/X11Joystick.cs
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@ -28,20 +28,29 @@
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using OpenTK.Input;
namespace OpenTK.Platform.X11
{
struct X11JoyDetails { }
struct X11JoyDetails
{
public bool IsConnected;
}
sealed class X11Joystick : IJoystickDriver, IJoystickDriver2, IGamePadDriver
sealed class X11Joystick : IJoystickDriver2
{
#region Fields
List<JoystickDevice> sticks = new List<JoystickDevice>();
IList<JoystickDevice> sticks_readonly;
readonly object sync = new object();
readonly FileSystemWatcher watcher = new FileSystemWatcher(JoystickPath);
readonly FileSystemWatcher watcher_legacy = new FileSystemWatcher(JoystickPathLegacy);
readonly Dictionary<int, int> index_to_stick = new Dictionary<int, int>();
List<JoystickDevice<X11JoyDetails>> sticks = new List<JoystickDevice<X11JoyDetails>>();
bool disposed;
@ -51,12 +60,25 @@ namespace OpenTK.Platform.X11
public X11Joystick()
{
sticks_readonly = sticks.AsReadOnly();
watcher.Created += JoystickAdded;
watcher.Deleted += JoystickRemoved;
watcher.EnableRaisingEvents = true;
watcher_legacy.Created += JoystickAdded;
watcher_legacy.Deleted += JoystickRemoved;
watcher_legacy.EnableRaisingEvents = true;
}
#endregion
#region Private Members
void OpenJoysticks()
{
int number = 0, max_sticks = 25;
while (number < max_sticks)
{
JoystickDevice stick = OpenJoystick(JoystickPath, number++);
JoystickDevice<X11JoyDetails> stick = OpenJoystick(JoystickPath, number++);
if (stick != null)
{
//stick.Description = String.Format("USB Joystick {0} ({1} axes, {2} buttons, {3}{0})",
@ -68,7 +90,7 @@ namespace OpenTK.Platform.X11
number = 0;
while (number < max_sticks)
{
JoystickDevice stick = OpenJoystick(JoystickPathLegacy, number++);
JoystickDevice<X11JoyDetails> stick = OpenJoystick(JoystickPathLegacy, number++);
if (stick != null)
{
//stick.Description = String.Format("USB Joystick {0} ({1} axes, {2} buttons, {3}{0})",
@ -78,20 +100,88 @@ namespace OpenTK.Platform.X11
}
}
int GetJoystickNumber(string path)
{
if (path.StartsWith("js"))
{
int num;
if (Int32.TryParse(path.Substring(2), out num))
{
return num;
}
}
return -1;
}
void JoystickAdded(object sender, FileSystemEventArgs e)
{
lock (sync)
{
string file = Path.GetFileName(e.FullPath);
int number = GetJoystickNumber(file);
if (number != -1)
{
JoystickDevice<X11JoyDetails> stick = OpenJoystick(e.FullPath, number);
// Find the first disconnected joystick (if any)
int i;
for (i = 0; i < sticks.Count; i++)
{
if (!stick.Details.IsConnected)
{
break;
}
}
// If no disconnected joystick exists, append a new slot
if (i == sticks.Count)
{
sticks.Add(stick);
}
else
{
sticks[i] = stick;
}
// Map player index to joystick
index_to_stick.Add(index_to_stick.Count, i);
}
}
}
void JoystickRemoved(object sender, FileSystemEventArgs e)
{
lock (sync)
{
string file = Path.GetFileName(e.FullPath);
int number = GetJoystickNumber(file);
if (number != -1)
{
// Find which joystick id matches this number
int i;
for (i = 0; i < sticks.Count; i++)
{
if (sticks[i].Id == number)
{
break;
}
}
if (i == sticks.Count)
{
Debug.Print("[Evdev] Joystick id {0} does not exist.", number);
}
else
{
JoystickDevice<X11JoyDetails> stick = sticks[i];
stick.Details.IsConnected = false;
}
}
}
}
#endregion
#region IJoystickDriver
public int DeviceCount
{
get { return sticks.Count; }
}
public IList<JoystickDevice> Joysticks
{
get { Poll(); return sticks_readonly; }
}
public void Poll()
{
JoystickEvent e;
@ -123,13 +213,11 @@ namespace OpenTK.Platform.X11
}
}
#endregion
#region Private Members
JoystickDevice<X11JoyDetails> OpenJoystick(string base_path, int number)
{
string path = base_path + number.ToString();
string path = Path.Combine(base_path, "js" + number.ToString());
JoystickDevice<X11JoyDetails> stick = null;
int fd = -1;
@ -159,6 +247,10 @@ namespace OpenTK.Platform.X11
UnsafeNativeMethods.ioctl(fd, JoystickIoctlCode.Name128, sb);
stick.Description = sb.ToString();
stick.Id = number;
stick.Details.IsConnected = true;
Debug.Print("Found joystick on path {0}", path);
}
finally
@ -196,8 +288,8 @@ namespace OpenTK.Platform.X11
Name128 = (2u << 30) | (0x6A << 8) | (0x13 << 0) | (128 << 16) //JSIOCGNAME(128), which is _IOC(_IO_READ, 'j', 0x13, len)
}
static readonly string JoystickPath = "/dev/input/js";
static readonly string JoystickPathLegacy = "/dev/js";
static readonly string JoystickPath = "/dev/input";
static readonly string JoystickPathLegacy = "/dev";
[Flags]
enum OpenFlags
@ -259,30 +351,6 @@ namespace OpenTK.Platform.X11
#endregion
#region IGamePadDriver Members
public GamePadCapabilities GetCapabilities(int index)
{
return new GamePadCapabilities();
}
public GamePadState GetState(int index)
{
return new GamePadState();
}
public string GetName(int index)
{
return String.Empty;
}
public bool SetVibration(int index, float left, float right)
{
return false;
}
#endregion
#region IJoystickDriver2 Members
JoystickState IJoystickDriver2.GetState(int index)