HidDeviceValueCapabilities[] GetDeviceValueCapabilities(IntPtr handle)
{
var capsLength = (short)capabilities.NumberInputValueCaps;
var valueCapabilities = new HidApi.HIDP_VALUE_CAPS[capsLength];
using (var dataContext = new PreparsedDataContext(handle)) {
HidApi.HidP_GetValueCaps(HidApi.HIDP_REPORT_TYPE.Input, valueCapabilities, ref capsLength, dataContext.Handle);
}
return(valueCapabilities.Select(caps => new HidDeviceValueCapabilities(caps)).ToArray());
}
public async Task <GamepadState> GetStateAsync(CancellationToken token)
{
var report = await GetReportAsync(token);
var buttonCaps = buttonCapabilities[0];
ushort[] buttonsState;
var state = new GamepadState();
using (var deviceContext = new DeviceContext(Path)) {
using (var dataContext = new PreparsedDataContext(deviceContext.Handle)) {
var buttonsStateLength = buttonCaps.Range.UsageMax - buttonCaps.Range.UsageMin + 1;
//var buttonsStateLength = HidApi.HidP_MaxUsageListLength(HidApi.HIDP_REPORT_TYPE.Input, buttonCaps.UsagePage, dataContext.Handle);
buttonsState = new ushort[buttonsStateLength];
HidApi.HidP_GetUsages(HidApi.HIDP_REPORT_TYPE.Input, buttonCaps.UsagePage, 0, buttonsState, ref buttonsStateLength, dataContext.Handle, report.Data, report.Data.Length);
if (buttonsState.Contains((ushort)2))
{
state.A = true;
}
if (buttonsState.Contains((ushort)3))
{
state.B = true;
}
if (buttonsState.Contains((ushort)1))
{
state.X = true;
}
if (buttonsState.Contains((ushort)4))
{
state.Y = true;
}
if (buttonsState.Contains((ushort)5))
{
state.L1 = true;
}
if (buttonsState.Contains((ushort)7))
{
state.L2 = true;
}
if (buttonsState.Contains((ushort)6))
{
state.R1 = true;
}
if (buttonsState.Contains((ushort)8))
{
state.R2 = true;
}
if (buttonsState.Contains((ushort)9))
{
state.Select = true;
}
if (buttonsState.Contains((ushort)10))
{
state.Start = true;
}
if (buttonsState.Contains((ushort)11))
{
state.L3 = true;
}
if (buttonsState.Contains((ushort)12))
{
state.R3 = true;
}
var hasDpad = valueCapabilities.Any(x => x.Range.UsageMin == 0x39);
for (var i = 0; i < capabilities.NumberInputValueCaps; i++)
{
int value = 0;
HidApi.HidP_GetUsageValue(HidApi.HIDP_REPORT_TYPE.Input, valueCapabilities[i].UsagePage, 0, valueCapabilities[i].Range.UsageMin, ref value, dataContext.Handle, report.Data, report.Data.Length);
var scaleValue = 256;
if (valueCapabilities[i].UsagePage == 1)
{
switch (valueCapabilities[i].Range.UsageMin)
{
case 0x30: // X-axis // LX
var lAxisX = value - GamepadState.DEFAULT_AXIS_VALUE; // LogMin: 0 / LogMax: 255 // default: 128
if (value == 0)
{
lAxisX++;
}
if (hasDpad)
{
state.LX = lAxisX * scaleValue;
}
else
{
if (valueCapabilities[i].LogicalMin + 1 == value)
{
state.Left = true;
}
if (valueCapabilities[i].LogicalMax == value)
{
state.Right = true;
}
}
break;
case 0x31: // Y-axis // LY
var lAxisY = GamepadState.DEFAULT_AXIS_VALUE - value; //(long)value - 128; // LogMin: 0 / LogMax: 255 // default: 128
if (value == 0)
{
lAxisY--;
}
if (hasDpad)
{
state.LY = lAxisY * scaleValue;
}
else
{
if (valueCapabilities[i].LogicalMin + 1 == value)
{
state.Up = true;
}
if (valueCapabilities[i].LogicalMax == value)
{
state.Down = true;
}
}
break;
case 0x32: // Z-axis // RX
var lAxisZ = value - GamepadState.DEFAULT_AXIS_VALUE; // LogMin: 0 / LogMax: 255 // default: 128
if (value == 0)
{
lAxisZ++;
}
state.RX = lAxisZ * scaleValue;
break;
case 0x35: // Rotate-Z // RY
var lAxisRz = value - GamepadState.DEFAULT_AXIS_VALUE; // LogMin: 0 / LogMax: 255 // default: 128
if (value == 0)
{
lAxisRz++;
}
state.RY = lAxisRz * scaleValue;
break;
case 0x39: // Hat Switch // DPAD
var lHat = value; // LogMin: 0 / LogMax: 7 // default: 8 // val = 360 / 8
if (lHat == 0)
{
state.Up = true;
}
else if (lHat == 1)
{
state.Up = true;
state.Right = true;
}
else if (lHat == 2)
{
state.Right = true;
}
else if (lHat == 3)
{
state.Right = true;
state.Down = true;
}
else if (lHat == 4)
{
state.Down = true;
}
else if (lHat == 5)
{
state.Down = true;
state.Left = true;
}
else if (lHat == 6)
{
state.Left = true;
}
else if (lHat == 7)
{
state.Left = true;
state.Up = true;
}
break;
}
}
}
}
}
return(state);
}
