|
private StrError ( int errcode ) : |
||
| errcode | int | |
| return | ||
/// <summary>
/// Creates and initialize a <a href="http://libusb.sourceforge.net/api-1.0/index.html">Libusb-1.0</a> USB session handle.
/// </summary>
/// <remarks>
/// <para>A <see cref="MonoUsbSessionHandle"/> instance must be created before calling any other <a href="http://libusb.sourceforge.net/api-1.0/index.html">Libusb-1.0 API</a> function.</para>
/// </remarks>
public MonoUsbSessionHandle() : base(IntPtr.Zero, true)
{
lock (sessionLOCK)
{
IntPtr pNewSession = IntPtr.Zero;
try
{
mLastReturnCode = (MonoUsbError)MonoUsbApi.Init(ref pNewSession);
}
catch (DllNotFoundException dllNotFound)
{
if (LHelper.IsLinux)
{
throw new DllNotFoundException(DLL_NOT_FOUND_LINUX, dllNotFound);
}
else
{
throw new DllNotFoundException(DLL_NOT_FOUND_WINDOWS, dllNotFound);
}
}
if ((int)mLastReturnCode < 0)
{
mLastReturnString = MonoUsbApi.StrError(mLastReturnCode);
SetHandleAsInvalid();
}
else
{
SetHandle(pNewSession);
mSessionCount++;
}
}
}
internal static UsbError Error(ErrorCode errorCode, int ret, string description, object sender)
{
string win32Error = String.Empty;
if (errorCode == ErrorCode.MonoApiError)
{
win32Error = ((Error)ret) + ":" + MonoUsbApi.StrError((Error)ret);
}
UsbError err = new UsbError(errorCode, ret, win32Error, description, sender);
return(err);
}
/// <summary>Open a device handle from <paramref name="profileHandle"/>.</summary>
/// <remarks>
/// <para>A handle allows you to perform I/O on the device in question.</para>
/// <para>To close a device handle call its <see cref="SafeHandle.Close"/> method.</para>
/// <para>This is a non-blocking function; no requests are sent over the bus.</para>
/// <note title="Libusb-1.0 API Note:" type="cpp">The <see cref="MonoUsbDeviceHandle(MonoUsbProfileHandle)"/> constructor is roughly equivalent to <a href="http://libusb.sourceforge.net/api-1.0/group__dev.html#ga8163100afdf933fabed0db7fa81c89d1">libusb_open()</a>.</note>
/// </remarks>
/// <param name="profileHandle">A device profile handle.</param>
public MonoUsbDeviceHandle(MonoUsbProfileHandle profileHandle)
: base(IntPtr.Zero)
{
IntPtr pDeviceHandle = IntPtr.Zero;
int ret = MonoUsbApi.Open(profileHandle, ref pDeviceHandle);
if (ret < 0 || pDeviceHandle == IntPtr.Zero)
{
lock (handleLOCK)
{
mLastReturnCode = (MonoUsbError)ret;
mLastReturnString = MonoUsbApi.StrError(mLastReturnCode);
}
SetHandleAsInvalid();
}
else
{
SetHandle(pDeviceHandle);
}
}