/// <summary>
/// Initializes a new PS4 controller.
/// </summary>
/// <param name="read">The "file" that the controller sends info to.</param>
/// <param name="info">The capabilities of the controller.</param>
internal Ps4Controller(SafeFileHandle read, HidPCaps info)
{
_handleRead = read;
_caps = info;
_fsRead = new FileStream(read, FileAccess.ReadWrite, _caps.InputReportByteLength, false);
// Typically you don't want to explicitly new an enum as it can cause undefined results.
// However Monogame doesn't have a default value for Buttons, so we're forced to.
// This will make it so the variable is equal to 0, therefore having no flags set.
// We could also just set the variable to zero, but this way is clearer to me.
CurrentFrameState = new Buttons();
PreviousFrameState = new Buttons();
AsyncState = new Buttons();
//Start reading the file.
ReadAsync();
//Determine the controller index.
if (_openSlots.Count == 0)
{
Index = _count++;
}
else
{
Index = _openSlots.Min();
_openSlots.Remove(Index);
}
Ps4Input.OnControllerConnected(this);
}
internal unsafe static bool TryRegisterPS4Controller(IntPtr handle, out Ps4Controller controller)
{
controller = null;
var devName = GetRawInputDeviceName(handle);
char[] arr = new char[126];
string product = "";
var devHandle = CreateFileW(devName, FileAccess.Read, FileShare.ReadWrite, IntPtr.Zero, FileMode.Open, FileAttributes.Normal, IntPtr.Zero);
fixed(char *p = arr)
{
if (HidD_GetProductString(devHandle, p, 126))
{
product = new string(p);
var index = product.IndexOf('\0');
if (index != -1)
{
product.Remove(index);
}
}
}
if (product == "Wireless Controller")
{
var preparsedData = IntPtr.Zero;
if (!HidD_GetPreparsedData(devHandle, ref preparsedData))
{
devHandle.Close();
return(false);
}
HidPCaps caps = new HidPCaps();
if (HidP_GetCaps(preparsedData, ref caps) != NTStatus.Success)
{
HidD_FreePreparsedData(ref preparsedData);
devHandle.Close();
return(false);
}
if (caps.InputReportByteLength == 64)
{
HidD_FreePreparsedData(ref preparsedData);
controller = new Ps4Controller(devHandle, caps);
return(true);
}
else
{
devHandle.Close();
return(false);
}
}
devHandle.Close();
return(false);
}
internal static extern NTStatus HidP_GetCaps(
[In] IntPtr preparsedData,
[In, Out] ref HidPCaps caps
);