unsafe void UpdateButtons(RawInput *rin, Device stick)
{
stick.ClearButtons();
for (int i = 0; i < stick.ButtonCaps.Count; i++)
{
short * usage_list = stackalloc short[(int)JoystickButton.Last + 1];
int usage_length = (int)JoystickButton.Last;
HIDPage page = stick.ButtonCaps[i].UsagePage;
short collection = stick.ButtonCaps[i].LinkCollection;
HidProtocolStatus status = HidProtocol.GetUsages(
HidProtocolReportType.Input,
page, 0, usage_list, ref usage_length,
PreparsedData,
new IntPtr((void *)&rin->Data.HID.RawData),
rin->Data.HID.Size);
if (status != HidProtocolStatus.Success)
{
Debug.Print("[WinRawJoystick] HidProtocol.GetUsages() failed with {0}",
Marshal.GetLastWin32Error());
continue;
}
for (int j = 0; j < usage_length; j++)
{
short usage = *(usage_list + j);
stick.SetButton(collection, page, usage, true);
}
}
}
private unsafe void UpdateAxes(RawInput *rin, Device stick)
{
for (int i = 0; i < stick.AxisCaps.Count; i++)
{
if (stick.AxisCaps[i].IsRange)
{
Debug.Print("[{0}] Axis range collections not implemented. Please report your controller type at https://github.com/opentk/opentk/issues",
GetType().Name);
continue;
}
HIDPage page = stick.AxisCaps[i].UsagePage;
short usage = stick.AxisCaps[i].NotRange.Usage;
uint value = 0;
short collection = stick.AxisCaps[i].LinkCollection;
HidProtocolStatus status = HidProtocol.GetUsageValue(
HidProtocolReportType.Input,
page, 0, usage, ref value,
PreparsedData,
new IntPtr((void *)&rin->Data.HID.RawData),
rin->Data.HID.Size);
if (status != HidProtocolStatus.Success)
{
Debug.Print("[{0}] HidProtocol.GetScaledUsageValue() failed. Error: {1}",
GetType().Name, status);
continue;
}
if (page == HIDPage.GenericDesktop && (HIDUsageGD)usage == HIDUsageGD.Hatswitch)
{
stick.SetHat(collection, page, usage, GetHatPosition(value, stick.AxisCaps[i]));
}
else
{
if (stick.AxisCaps[i].LogicalMin > 0)
{
short scaled_value = (short)HidHelper.ScaleValue(
(int)((long)value + stick.AxisCaps[i].LogicalMin),
stick.AxisCaps[i].LogicalMin, stick.AxisCaps[i].LogicalMax,
Int16.MinValue, Int16.MaxValue);
stick.SetAxis(collection, page, usage, scaled_value);
}
else
{
//If our stick returns a minimum value below zero, we should not add this to our value
//before attempting to scale it, as this then inverts the value
short scaled_value = (short)HidHelper.ScaleValue(
(int)(long)value,
stick.AxisCaps[i].LogicalMin, stick.AxisCaps[i].LogicalMax,
Int16.MinValue, Int16.MaxValue);
stick.SetAxis(collection, page, usage, scaled_value);
}
}
}
}
