internal static bool UsbIOSync(SafeHandle dev, int code, Object inBuffer, int inSize, IntPtr outBuffer, int outSize, out int ret)
{
SafeOverlapped deviceIoOverlapped = new SafeOverlapped();
ManualResetEvent hEvent = new ManualResetEvent(false);
deviceIoOverlapped.ClearAndSetEvent(hEvent.SafeWaitHandle.DangerousGetHandle());
ret = 0;
if (!Kernel32.DeviceIoControlAsObject(dev, code, inBuffer, inSize, outBuffer, outSize, ref ret, deviceIoOverlapped.GlobalOverlapped))
{
int iError = Marshal.GetLastWin32Error();
if (iError != ERROR_IO_PENDING)
{
// Don't log errors for these control codes.
do
{
if (code == LibUsbIoCtl.GET_REG_PROPERTY) break;
if (code == LibUsbIoCtl.GET_CUSTOM_REG_PROPERTY) break;
UsbError.Error(ErrorCode.Win32Error, iError, String.Format("DeviceIoControl code {0:X8} failed:{1}", code, Kernel32.FormatSystemMessage(iError)), typeof(LibUsbDriverIO));
} while (false);
hEvent.Close();
return false;
}
}
if (Kernel32.GetOverlappedResult(dev, deviceIoOverlapped.GlobalOverlapped, out ret, true))
{
hEvent.Close();
return true;
}
UsbError.Error(ErrorCode.Win32Error, Marshal.GetLastWin32Error(), "GetOverlappedResult failed.\nIoCtlCode:" + code, typeof(LibUsbDriverIO));
hEvent.Close();
return false;
}
internal static bool UsbIOSync(SafeHandle dev, int code, Object inBuffer, int inSize, IntPtr outBuffer, int outSize, out int ret)
{
SafeOverlapped deviceIoOverlapped = new SafeOverlapped();
ManualResetEvent hEvent = new ManualResetEvent(false);
deviceIoOverlapped.Init(hEvent.GetSafeWaitHandle().DangerousGetHandle());
ret = 0;
if (!Kernel32.DeviceIoControlAsObject(dev, code, inBuffer, inSize, outBuffer, outSize, ref ret, deviceIoOverlapped.GlobalOverlapped))
{
int iError = Marshal.GetLastWin32Error();
if (iError != ERROR_IO_PENDING)
{
// Don't log errors for these control codes.
do
{
if (code == LibUsbIoCtl.GET_REG_PROPERTY)
{
break;
}
if (code == LibUsbIoCtl.GET_CUSTOM_REG_PROPERTY)
{
break;
}
UsbError.Error(ErrorCode.Win32Error, iError, String.Format("DeviceIoControl code {0:X8} failed:{1}", code, Kernel32.FormatSystemMessage(iError)), typeof(LibUsbDriverIO));
} while (false);
#if !NETSTANDARD1_5 && !NETSTANDARD1_6
hEvent.Close();
#else
hEvent.Dispose();
#endif
return(false);
}
}
if (Kernel32.GetOverlappedResult(dev, deviceIoOverlapped.GlobalOverlapped, out ret, true))
{
#if !NETSTANDARD1_5 && !NETSTANDARD1_6
hEvent.Close();
#else
hEvent.Dispose();
#endif
return(true);
}
UsbError.Error(ErrorCode.Win32Error, Marshal.GetLastWin32Error(), "GetOverlappedResult failed.\nIoCtlCode:" + code, typeof(LibUsbDriverIO));
#if !NETSTANDARD1_5 && !NETSTANDARD1_6
hEvent.Close();
#else
hEvent.Dispose();
#endif
return(false);
}
public HidDevice(string path)
{
//device mutex
lockObject = new object();
//static buffers
strBuffer = new byte[256];
//open device
reference = Kernel32.File.Create(path, Kernel32.FileAccess.GenericWrite, Kernel32.FileShare.Read | Kernel32.FileShare.Write, IntPtr.Zero, CreationDisposition.OpenExisting, Kernel32.FileAttributes.Overlapped, IntPtr.Zero);
if (reference.IsInvalid)
{
return;
}
//overlapped
fileEvent = new ManualResetEvent(false);
fileOverlapped = new SafeOverlapped(fileEvent);
//get preparsed data
IntPtr preparsed;
if (!NativeMethods.HidD_GetPreparsedData(reference, out preparsed))
{
return;
}
preparsedData = new PreparsedData(preparsed);
//transfer buffers
Caps capabilities = preparsedData.Capabilities;
inBuffer = new byte[capabilities.InputReportByteLength];
outBuffer = new byte[capabilities.OutputReportByteLength];
featureBuffer = new byte[capabilities.FeatureReportByteLength];
//dynamic caps
inputValueCaps = new List <ValueCaps>();
outputValueCaps = new List <ValueCaps>();
featureValueCaps = new List <ValueCaps>();
ushort numInputCaps = capabilities.NumberInputValueCaps;
ushort numOutputCaps = capabilities.NumberOutputValueCaps;
ushort numFeatureCaps = capabilities.NumberFeatureValueCaps;
ushort maxValueCaps = Math.Max(numInputCaps, numOutputCaps);
maxValueCaps = Math.Max(maxValueCaps, numFeatureCaps);
int valueCapSize = Marshal.SizeOf <ValueCaps>();
IntPtr valueCapPtr = Marshal.AllocHGlobal(maxValueCaps * valueCapSize);
HidPStatus stat = NativeMethods.HidP_GetValueCaps(ReportType.Input, valueCapPtr, ref numInputCaps, preparsed);
for (int i = 0; i < numInputCaps; i++)
{
ValueCaps val = Marshal.PtrToStructure <ValueCaps>(new IntPtr(valueCapPtr.ToInt64() + (i * valueCapSize)));
inputValueCaps.Add(val);
}
stat = NativeMethods.HidP_GetValueCaps(ReportType.Output, valueCapPtr, ref numOutputCaps, preparsed);
for (int i = 0; i < numOutputCaps; i++)
{
ValueCaps val = Marshal.PtrToStructure <ValueCaps>(new IntPtr(valueCapPtr.ToInt64() + i * valueCapSize));
outputValueCaps.Add(val);
}
stat = NativeMethods.HidP_GetValueCaps(ReportType.Feature, valueCapPtr, ref numFeatureCaps, preparsed);
for (int i = 0; i < numFeatureCaps; i++)
{
ValueCaps val = Marshal.PtrToStructure <ValueCaps>(new IntPtr(valueCapPtr.ToInt64() + i * valueCapSize));
featureValueCaps.Add(val);
}
Marshal.FreeHGlobal(valueCapPtr);
}
