C++ (Cpp) xnLockNodeForChanges示例

示例#1

文件： XnPlayerImpl.cpp 项目： jgollub/MetaImagerProj

XnStatus PlayerImpl::AddNode(const XnChar* strNodeName, XnProductionNodeType type, XnCodecID compression)
{
	XnStatus nRetVal = XN_STATUS_OK;
	
	PlayedNodeInfo playedNodeInfo = {0};

	if (m_playedNodes.Get(strNodeName, playedNodeInfo) == XN_STATUS_OK)
	{
		// already in the list, just return OK.
		return (XN_STATUS_OK);
	}

	// check if we need to create it (maybe it's a rewind...)
	if (xnGetNodeHandleByName(m_hPlayer->pContext, strNodeName, &playedNodeInfo.hNode) != XN_STATUS_OK)
	{
		XnStatus nRetVal = xnCreateMockNode(m_hPlayer->pContext, type, strNodeName, &playedNodeInfo.hNode);
		XN_IS_STATUS_OK(nRetVal);
	}

	// lock it, so no one can change configuration (this is a file recording)
	nRetVal = xnLockNodeForChanges(playedNodeInfo.hNode, &playedNodeInfo.hLock);
	XN_IS_STATUS_OK(nRetVal);

	nRetVal = m_playedNodes.Set(strNodeName, playedNodeInfo);
	XN_IS_STATUS_OK(nRetVal);

	return XN_STATUS_OK;
}

示例#2

文件： XnPlayerImpl.cpp 项目： qrazhan/terrablair-satellite

XnStatus PlayerImpl::AddNode(const XnChar* strNodeName, XnProductionNodeType type, XnCodecID compression)
{
	XnStatus nRetVal = XN_STATUS_OK;
	
	PlayedNodeInfo playedNodeInfo = {0};

	if (m_playedNodes.Get(strNodeName, playedNodeInfo) == XN_STATUS_OK)
	{
		// already in the list, just return OK.
		return (XN_STATUS_OK);
	}

	// check if we need to create it (maybe it's a rewind...)
	if (xnGetRefNodeHandleByName(m_hPlayer->pContext, strNodeName, &playedNodeInfo.hNode) != XN_STATUS_OK)
	{
		XnStatus nRetVal = xnCreateMockNode(m_hPlayer->pContext, type, strNodeName, &playedNodeInfo.hNode);
		XN_IS_STATUS_OK(nRetVal);

		// mark this node as needed node. We need this in order to make sure if xnForceShutdown() is called,
		// the player will be destroyed *before* mock node is (so we can release it).
		nRetVal = xnAddNeededNode(m_hPlayer, playedNodeInfo.hNode);
		if (nRetVal != XN_STATUS_OK)
		{
			xnProductionNodeRelease(playedNodeInfo.hNode);
			return (nRetVal);
		}
	}

	// lock it, so no one can change configuration (this is a file recording)
	nRetVal = xnLockNodeForChanges(playedNodeInfo.hNode, &playedNodeInfo.hLock);
	if (nRetVal != XN_STATUS_OK)
	{
		xnProductionNodeRelease(playedNodeInfo.hNode);
		return (nRetVal);
	}

	nRetVal = m_playedNodes.Set(strNodeName, playedNodeInfo);
	if (nRetVal != XN_STATUS_OK)
	{
		xnProductionNodeRelease(playedNodeInfo.hNode);
		return (nRetVal);
	}

	return XN_STATUS_OK;
}

示例#3

文件： XnXmlScriptNode.cpp 项目： Clebeson/OpenNI

XnStatus xnConfigureNodeFromXml(XnNodeHandle hNode, const TiXmlElement* pNode)
{
	XnStatus nRetVal = XN_STATUS_OK;

	const TiXmlElement* pConfig = pNode->FirstChildElement("Configuration");
	if (pConfig == NULL)
	{
		return (XN_STATUS_OK);
	}

	XnBool bLock = FALSE;
	const XnChar* strLock = pConfig->Attribute("lock");
	if (strLock != NULL)
	{
		xnXmlReadBoolAttribute(pConfig, "lock", &bLock);
	}

	XnLockHandle hLock = 0;

	if (bLock)
	{
		nRetVal = xnLockNodeForChanges(hNode, &hLock);
		XN_IS_STATUS_OK(nRetVal);

		nRetVal = xnLockedNodeStartChanges(hNode, hLock);
		XN_IS_STATUS_OK(nRetVal);
	}

	const TiXmlElement* pOpcode = pConfig->FirstChildElement();
	while (pOpcode != NULL)
	{
		nRetVal = xnConfigureSetOpcode(hNode, pOpcode);
		XN_IS_STATUS_OK(nRetVal);

		pOpcode = pOpcode->NextSiblingElement();
	}

	if (bLock)
	{
		nRetVal = xnLockedNodeEndChanges(hNode, hLock);
	}

	return (XN_STATUS_OK);
}