C++ Context::GetUnderlyingObject方法代码示例

XnStatus XnExportedSensorDevice::EnumerateProductionTrees(xn::Context& context, xn::NodeInfoList& TreesList, xn::EnumerationErrors* /*pErrors*/)
{
	XnStatus nRetVal = XN_STATUS_OK;

	// enumerate connected sensors
	XnUInt32 nCount = 0;

	// check if sensor is connected
	nRetVal = XnSensor::Enumerate(NULL, &nCount);
	if (nRetVal != XN_STATUS_OUTPUT_BUFFER_OVERFLOW)
	{
		// no sensor connected
		return XN_STATUS_DEVICE_NOT_CONNECTED;
	}

	// allocate according to count
	XnConnectionString* pConnStrings;
	XN_VALIDATE_CALLOC(pConnStrings, XnConnectionString, nCount);

	nRetVal = XnSensor::Enumerate(pConnStrings, &nCount);
	if (nRetVal != XN_STATUS_OK)
	{
		xnOSFree(pConnStrings);
		return (nRetVal);
	}

	XnProductionNodeDescription Description;
	GetDescription(&Description);

	for (XnUInt32 i = 0; i < nCount; ++i)
	{
		// Each connection string is a sensor. Return it if it wasn't created already.
		if (FindCreatedDevice(context.GetUnderlyingObject(), pConnStrings[i]) == m_createdDevices.End())
		{
			nRetVal = TreesList.Add(Description, pConnStrings[i], NULL);
			if (nRetVal != XN_STATUS_OK)
			{
				xnOSFree(pConnStrings);
				return (nRetVal);
			}
		}
	}

	xnOSFree(pConnStrings);
	return (XN_STATUS_OK);
}

XnBool Context_IsValid(xn::Context& self) {
    return (self.GetUnderlyingObject() != NULL);
}

XnStatus XnExportedSensorDevice::Create(xn::Context& context, 
										const XnChar* strInstanceName, 
										const XnChar* strCreationInfo, 
										xn::NodeInfoList* /*pNeededTrees*/, 
										const XnChar* strConfigurationDir, 
										xn::ModuleProductionNode** ppInstance)
{
	XnStatus nRetVal = XN_STATUS_OK;

	XnChar strGlobalConfigFile[XN_FILE_MAX_PATH];
	nRetVal = XnSensor::ResolveGlobalConfigFileName(strGlobalConfigFile, XN_FILE_MAX_PATH, strConfigurationDir);
	XN_IS_STATUS_OK(nRetVal);

	// multi-process is not supported on Mac
#if (XN_PLATFORM == XN_PLATFORM_MACOSX)
	XnBool bEnableMultiProcess = FALSE;
#else
	XnBool bEnableMultiProcess = XN_SENSOR_DEFAULT_MULTI_PROCESS;
	XnUInt32 nValue;
	if (XN_STATUS_OK == xnOSReadIntFromINI(strGlobalConfigFile, XN_SENSOR_SERVER_CONFIG_FILE_SECTION, XN_MODULE_PROPERTY_ENABLE_MULTI_PROCESS, &nValue))
	{
		bEnableMultiProcess = (nValue == TRUE);
	}
#endif

	XnDeviceBase* pSensor = NULL;

	if (bEnableMultiProcess)
	{
		XN_VALIDATE_NEW(pSensor, XnSensorClient);
	}
	else
	{
		XN_VALIDATE_NEW(pSensor, XnSensor);
	}

	XnDeviceConfig config;
	config.DeviceMode = XN_DEVICE_MODE_READ;
	config.cpConnectionString = strCreationInfo;
	config.SharingMode = XN_DEVICE_EXCLUSIVE;
	config.pInitialValues = NULL;

	if (strConfigurationDir != NULL)
	{
		if (bEnableMultiProcess)
		{
			XnSensorClient* pClient = (XnSensorClient*)pSensor;
			pClient->SetConfigDir(strConfigurationDir);
		}
		else
		{
			XnSensor* pActualSensor = (XnSensor*)pSensor;
			pActualSensor->SetGlobalConfigFile(strGlobalConfigFile);
		}
	}

	nRetVal = pSensor->Init(&config);
	if (nRetVal != XN_STATUS_OK)
	{
		XN_DELETE(pSensor);
		return (nRetVal);
	}

	XnSensorDevice* pDevice = XN_NEW(XnSensorDevice, context, pSensor, strInstanceName);
	if (pDevice == NULL)
	{
		XN_DELETE(pSensor);
		return (XN_STATUS_ALLOC_FAILED);
	}

	nRetVal = pDevice->Init();
	if (nRetVal != XN_STATUS_OK)
	{
		XN_DELETE(pDevice);
		XN_DELETE(pSensor);
		return (nRetVal);
	}

	nRetVal = m_createdDevices.AddLast(DeviceKey(context.GetUnderlyingObject(), strCreationInfo));
	if (nRetVal != XN_STATUS_OK)
	{
		XN_DELETE(pDevice);
		XN_DELETE(pSensor);
		return (nRetVal);
	}

	*ppInstance = pDevice;

	return (XN_STATUS_OK);
}

BP::object Context_FindExistingNode_wrapped(xn::Context& self, XnProductionNodeType type) {
    XnNodeHandle ret = NULL;
    xnFindExistingRefNodeByType(self.GetUnderlyingObject(), type, &ret);
    return wrapNode(ret);
}