Function xnCreateProductionNodeImpl

Source/OpenNI/XnOpenNI.cpp:1593–1768

}

static XnStatus xnCreateProductionNodeImpl(XnContext* pContext, XnNodeInfo* pTree, XnNodeHandle* phNode)
{
	XnStatus nRetVal = XN_STATUS_OK;

	*phNode = NULL;
	
	// first of all, check if name is empty, if so - give it a default name
	if (pTree->strInstanceName[0] == '\0')
	{
		xnFindValidNameForType(pContext, pTree->Description.Type, pTree->strInstanceName);
	}

	XnChar strDescription[500];
	xnProductionNodeDescriptionToString(&pTree->Description, strDescription, 500);
	xnLoggerInfo(g_logger, "Creating node '%s' of type %s...", pTree->strInstanceName, strDescription);

	XnModuleInstance* pModuleInstance;
	nRetVal = pContext->moduleLoader.CreateRootNode(pContext, pTree, &pModuleInstance);
	XN_IS_STATUS_OK(nRetVal);

	// create handle
	XnInternalNodeData* pNodeData;
	XN_VALIDATE_CALLOC(pNodeData, XnInternalNodeData, 1);

	pNodeData->pTypeHierarchy = XN_NEW(XnBitSet);
	if (pNodeData->pTypeHierarchy == NULL)
	{
		return xnFreeProductionNodeImpl(pNodeData, XN_STATUS_ALLOC_FAILED);
	}

	*pNodeData->pTypeHierarchy = pModuleInstance->pLoaded->pInterface->HierarchyType;
	pNodeData->pNodeInfo = pTree;
	pNodeData->nRefCount = 1;
	pNodeData->pModuleInstance = pModuleInstance;

	// reference context
	nRetVal = xnContextAddRef(pContext);
	if (nRetVal != XN_STATUS_OK)
	{
		return xnFreeProductionNodeImpl(pNodeData, nRetVal);
	}
	pNodeData->pContext = pContext;

	nRetVal = xnOSCreateCriticalSection(&pNodeData->hLock);
	if (nRetVal != XN_STATUS_OK)
	{
		return xnFreeProductionNodeImpl(pNodeData, nRetVal);
	}

	pNodeData->pNeededNodesDataHash = XN_NEW(XnNeededNodesDataHash);

	if (pNodeData->pNeededNodesDataHash == NULL)
	{
		return xnFreeProductionNodeImpl(pNodeData, XN_STATUS_ALLOC_FAILED);
	}

	pNodeData->pRegistrationCookiesHash = XN_NEW(XnModuleStateCookieHash);