private static int OpenRestrictedHandler(IntPtr path, int flags, IntPtr data)
{
int fd = Libc.open(path, (OpenFlags)flags);
Debug.Print("[Input] Opening '{0}' with flags {1}. fd:{2}",
Marshal.PtrToStringAnsi(path), (OpenFlags)flags, fd);
if (fd >= 0)
{
Interlocked.Increment(ref DeviceFDCount);
}
return(fd);
}
private static int SetupDisplay(string gpu, out IntPtr gbm_device, out IntPtr egl_display)
{
Debug.Print("[KMS] Attempting to use gpu '{0}'.", gpu);
gbm_device = IntPtr.Zero;
egl_display = IntPtr.Zero;
var fd = Libc.open(gpu, OpenFlags.ReadWrite | OpenFlags.CloseOnExec);
if (fd < 0)
{
Debug.Print("[KMS] Failed to open gpu");
return(fd);
}
Debug.Print("[KMS] GPU '{0}' opened as fd:{1}", gpu, fd);
gbm_device = Gbm.CreateDevice(fd);
if (gbm_device == IntPtr.Zero)
{
throw new NotSupportedException("[KMS] Failed to create GBM device");
}
Debug.Print("[KMS] GBM {0:x} created successfully; ", gbm_device);
egl_display = Egl.Egl.GetDisplay(gbm_device);
if (egl_display == IntPtr.Zero)
{
throw new NotSupportedException("[KMS] Failed to create EGL display");
}
Debug.Print("[KMS] EGL display {0:x} created successfully", egl_display);
int major, minor;
if (!Egl.Egl.Initialize(egl_display, out major, out minor))
{
var error = Egl.Egl.GetError();
throw new NotSupportedException("[KMS] Failed to initialize EGL display. Error code: " + error);
}
Debug.Print("[KMS] EGL {0}.{1} initialized successfully on display {2:x}", major, minor, egl_display);
return(fd);
}
JoystickDevice <LinuxJoyDetails> OpenJoystick(string path)
{
JoystickDevice <LinuxJoyDetails> stick = null;
int number = GetJoystickNumber(Path.GetFileName(path));
if (number >= 0)
{
int fd = -1;
try
{
fd = Libc.open(path, OpenFlags.NonBlock);
if (fd == -1)
{
return(null);
}
// Check joystick driver version (must be 1.0+)
int driver_version = 0x00000800;
Libc.ioctl(fd, JoystickIoctlCode.Version, ref driver_version);
if (driver_version < 0x00010000)
{
return(null);
}
// Get number of joystick axes
int axes = 0;
Libc.ioctl(fd, JoystickIoctlCode.Axes, ref axes);
// Get number of joystick buttons
int buttons = 0;
Libc.ioctl(fd, JoystickIoctlCode.Buttons, ref buttons);
stick = new JoystickDevice <LinuxJoyDetails>(number, axes, buttons);
StringBuilder sb = new StringBuilder(128);
Libc.ioctl(fd, JoystickIoctlCode.Name128, sb);
stick.Description = sb.ToString();
stick.Details.FileDescriptor = fd;
stick.Details.State.SetIsConnected(true);
stick.Details.Guid = CreateGuid(stick, path, number);
// Find the first disconnected joystick (if any)
int i;
for (i = 0; i < sticks.Count; i++)
{
if (!sticks[i].Details.State.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);
Debug.Print("Found joystick on path {0}", path);
}
finally
{
if (stick == null && fd != -1)
{
Libc.close(fd);
}
}
}
return(stick);
}
private LinuxJoystickDetails OpenJoystick(string path)
{
LinuxJoystickDetails stick = null;
int number = GetJoystickNumber(Path.GetFileName(path));
if (number >= 0)
{
int fd = -1;
try
{
fd = Libc.open(path, OpenFlags.NonBlock);
if (fd == -1)
{
return(null);
}
unsafe
{
const int evsize = Evdev.EventCount / 8;
const int axissize = Evdev.AxisCount / 8;
const int keysize = Evdev.KeyCount / 8;
byte * evbit = stackalloc byte[evsize];
byte * axisbit = stackalloc byte[axissize];
byte * keybit = stackalloc byte[keysize];
string name;
EvdevInputId id;
// Ensure this is a joystick device
bool is_valid = true;
is_valid &= Evdev.GetBit(fd, 0, evsize, new IntPtr(evbit)) >= 0;
is_valid &= Evdev.GetBit(fd, EvdevType.ABS, axissize, new IntPtr(axisbit)) >= 0;
is_valid &= Evdev.GetBit(fd, EvdevType.KEY, keysize, new IntPtr(keybit)) >= 0;
is_valid &= TestBit(evbit, (int)EvdevType.KEY);
is_valid &= TestBit(evbit, (int)EvdevType.ABS);
is_valid &= TestBit(axisbit, (int)EvdevAxis.X);
is_valid &= TestBit(axisbit, (int)EvdevAxis.Y);
is_valid &= Evdev.GetName(fd, out name) >= 0;
is_valid &= Evdev.GetId(fd, out id) >= 0;
if (is_valid)
{
stick = new LinuxJoystickDetails
{
FileDescriptor = fd,
PathIndex = number,
State = new JoystickState(),
Name = name,
Guid = CreateGuid(id, name),
};
int axes, buttons, hats;
QueryCapabilities(stick, axisbit, axissize, keybit, keysize,
out axes, out buttons, out hats);
stick.Caps = new JoystickCapabilities(axes, buttons, hats, false);
// Poll the joystick once, to initialize its state
PollJoystick(stick);
}
}
Debug.Print("Found joystick on path {0}", path);
}
catch (Exception e)
{
Debug.Print("Error opening joystick: {0}", e.ToString());
}
finally
{
if (stick == null && fd != -1)
{
// Not a joystick
Libc.close(fd);
}
}
}
return(stick);
}