---
title: "AUGraphNodeInfo(_:_:_:_:)"
framework: audiotoolbox
role: symbol
role_heading: Function
path: "audiotoolbox/augraphnodeinfo(_:_:_:_:)"
---

# AUGraphNodeInfo(_:_:_:_:)

Returns information about a node object.

## Declaration

```swift
func AUGraphNodeInfo(_ inGraph: AUGraph, _ inNode: AUNode, _ outDescription: UnsafeMutablePointer<AudioComponentDescription>?, _ outAudioUnit: UnsafeMutablePointer<AudioUnit?>?) -> OSStatus
```

## Parameters

- `inGraph`: The AUGraph object.
- `inNode`: The node to query.
- `outDescription`: The component description that would describe the AudioUnit of this node.
- `outAudioUnit`: The AudioUnit of this node

## Return Value

Return Value A result code.

## Discussion

Discussion You can pass NULL for any output parameter whose value you don’t care about.

## See Also

### Audio Unit Processing Graph Services Functions

- [AUGraphAddNode(_:_:_:)](audiotoolbox/augraphaddnode(_:_:_:).md)
- [AUGraphAddRenderNotify(_:_:_:)](audiotoolbox/augraphaddrendernotify(_:_:_:).md)
- [AUGraphClearConnections(_:)](audiotoolbox/augraphclearconnections(_:).md)
- [AUGraphClose(_:)](audiotoolbox/augraphclose(_:).md)
- [AUGraphConnectNodeInput(_:_:_:_:_:)](audiotoolbox/augraphconnectnodeinput(_:_:_:_:_:).md)
- [AUGraphCountNodeInteractions(_:_:_:)](audiotoolbox/augraphcountnodeinteractions(_:_:_:).md)
- [AUGraphDisconnectNodeInput(_:_:_:)](audiotoolbox/augraphdisconnectnodeinput(_:_:_:).md)
- [AUGraphGetCPULoad(_:_:)](audiotoolbox/augraphgetcpuload(_:_:).md)
- [AUGraphGetIndNode(_:_:_:)](audiotoolbox/augraphgetindnode(_:_:_:).md)
- [AUGraphGetInteractionInfo(_:_:_:)](audiotoolbox/augraphgetinteractioninfo(_:_:_:).md)
- [AUGraphGetMaxCPULoad(_:_:)](audiotoolbox/augraphgetmaxcpuload(_:_:).md)
- [AUGraphGetNodeCount(_:_:)](audiotoolbox/augraphgetnodecount(_:_:).md)
- [AUGraphGetNodeInfoSubGraph(_:_:_:)](audiotoolbox/augraphgetnodeinfosubgraph(_:_:_:).md)
- [AUGraphGetNodeInteractions(_:_:_:_:)](audiotoolbox/augraphgetnodeinteractions(_:_:_:_:).md)
- [AUGraphGetNumberOfInteractions(_:_:)](audiotoolbox/augraphgetnumberofinteractions(_:_:).md)