---
title: AUNodeRenderCallback
framework: audiotoolbox
role: symbol
role_heading: Structure
path: audiotoolbox/aunoderendercallback
---

# AUNodeRenderCallback

A callback used to provide input to an audio unit.

## Declaration

```swift
struct AUNodeRenderCallback
```

## Overview

Overview Used to contain information when a callback is used to provide input to the specific node’s specified input.

## Topics

### Initializers

- [init()](audiotoolbox/aunoderendercallback/init().md)
- [init(destNode:destInputNumber:cback:)](audiotoolbox/aunoderendercallback/init(destnode:destinputnumber:cback:).md)

### Instance Properties

- [cback](audiotoolbox/aunoderendercallback/cback.md)
- [destInputNumber](audiotoolbox/aunoderendercallback/destinputnumber.md)
- [destNode](audiotoolbox/aunoderendercallback/destnode.md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)

## See Also

### Data Types

- [AudioUnitNodeConnection](audiotoolbox/audiounitnodeconnection.md)
- [AUGraph](audiotoolbox/augraph.md)
- [AUNode](audiotoolbox/aunode.md)
- [AUNodeInteraction](audiotoolbox/aunodeinteraction.md)