unsafe WindowsOverlappedAsyncResult BeginDeviceIoControl(int code, Byte[] inbuffer, Byte[] outbuffer, int outoffset, int outsize, AsyncCallback callback, Object state)
{
WindowsOverlappedAsyncResult ar = new WindowsOverlappedAsyncResult(callback, state);
try
{
fixed(Byte *inptr = inbuffer, outptr = outbuffer)
{
int ret;
Boolean success = Kernel32.DeviceIoControl(DeviceHandle, code, inptr, inbuffer.Length, outptr + outoffset, outsize, out ret, ar.PackOverlapped(new Object[] { inbuffer, outbuffer }));
ar.SyncResult(success, ret);
}
return(ar);
} catch {
ar.ErrorCleanup();
throw;
}
}
public override unsafe IAsyncResult BeginControlTransfer(UsbControlRequestType requestType, byte request, short value, short index, byte[] buffer, int offset, int length, AsyncCallback callback, Object state)
{
SafeWinUsbInterfaceHandle ih = PrepareControlTransfer(requestType, index, ref buffer, offset, length);
WindowsOverlappedAsyncResult ar = new WindowsOverlappedAsyncResult(callback, state);
try
{
fixed(Byte *b = buffer)
{
Boolean success = WinUsb_ControlTransfer(ih,
new UsbSetupPacket((byte)requestType, request, value, index, (short)length),
(IntPtr)(b + offset), length, out length, (IntPtr)ar.PackOverlapped(buffer));
ar.SyncResult(success, length);
return(ar);
}
} catch {
ar.ErrorCleanup();
throw;
}
}