private void ReadLoop()
{
if (!inputReceiver.IsRunning)
{
return;
}
Report report;
Dictionary <Usage, DataValue> changedIndexes = new Dictionary <Usage, DataValue>();
for (int i = 0; i < limit && inputReceiver.TryRead(inputReportBuffer, 0, out report); i++)
{
if (inputParser.TryParseReport(inputReportBuffer, 0, report))
{
while (inputParser.HasChanged)
{
int changedIndex = inputParser.GetNextChangedIndex();
var dataValue = inputParser.GetValue(changedIndex);
if (dataValue.Usages.Count() > 0)
{
changedIndexes[(Usage)dataValue.Usages.FirstOrDefault()] = dataValue;
}
}
}
}
var changedSources = sources.Where(s => s.Refresh(changedIndexes)).ToArray();
inputChangedEventArgs.Refresh(changedSources);
if (inputChangedEventArgs.ChangedValues.Any())
{
InputChanged?.Invoke(this, inputChangedEventArgs);
}
}
private void OnDigitizerInputReceived(object sender, EventArgs e)
{
var inputReportBuffer = new byte[_digitizer.GetMaxInputReportLength()];
while (_hidDeviceInputReceiver.TryRead(inputReportBuffer, 0, out Report report))
{
// Parse the report if possible.
// This will return false if (for example) the report applies to a different DeviceItem.
if (_hiddeviceInputParser.TryParseReport(inputReportBuffer, 0, report))
{
BridgeFrameBufferPlatform.Threading.Send(() => ProcessEvent());
}
}
}
private bool Parse(byte[] reportBuffer)
{
try {
byte reportId = reportBuffer[0];
if (!_reportCache.TryGetValue(reportId, out Report report))
{
_reportCache[reportId] = report = HidDevice.GetReportDescriptor().GetReport(ReportType.Input, reportId);
}
// Parse the report if possible.
if (_inputParser.TryParseReport(reportBuffer, 0, report))
{
while (_inputParser.HasChanged)
{
int changedIndex = _inputParser.GetNextChangedIndex();
var dataValue = _inputParser.GetValue(changedIndex);
Usage usage = (Usage)dataValue.Usages.FirstOrDefault();
if (Usage.Button1 <= usage && usage <= Usage.Button31)
{
int btnIdx = (int)(usage - (int)Usage.Button1);
_buttons.EnsureSize(btnIdx + 1);
_buttons[btnIdx] = dataValue.GetLogicalValue() != 0;
int val = dataValue.GetLogicalValue();
}
else if (usage == Usage.GenericDesktopHatSwitch)
{
// can only support 1 hat..
_hats.EnsureSize(1);
_hats[0] = ExtractHat(dataValue);
}
else if (Usage.GenericDesktopX <= usage && usage <= Usage.GenericDesktopRz)
{
int axisIdx = (int)(usage - (int)Usage.GenericDesktopX);
_axes.EnsureSize(axisIdx + 1);
_axes[axisIdx] = ScaleAxis(dataValue);
}
else
{
// unrecognized usage
Debug.WriteLine("Unrecognized usage: " + usage);
}
}
// for skinning simplicity sake, map hats also to buttons
int btn = _buttons.Count - 4 * _hats.Count;
for (int i = 0; i < _hats.Count; i++)
{
// UP DOWN LEFT RIGHT
_buttons[btn++] = _hats[i].HasFlag(Hat.Up);
_buttons[btn++] = _hats[i].HasFlag(Hat.Down);
_buttons[btn++] = _hats[i].HasFlag(Hat.Left);
_buttons[btn++] = _hats[i].HasFlag(Hat.Right);
}
return(true);
}
}
catch { }
return(false);
}