---
title: IOAudioBufferDataDescriptor
framework: IOKit
role: symbol
role_heading: Structure
platforms: [Mac Catalyst 13.0+, macOS 10.4+]
path: iokit/ioaudiobufferdatadescriptor
---

# IOAudioBufferDataDescriptor

## Declaration

```occ
typedef struct _IOAudioBufferDataDescriptor {
    ...
} IOAudioBufferDataDescriptor;
```

## Topics

### Instance Properties

- [fActualDataByteSize](iokit/ioaudiobufferdatadescriptor/1584745-factualdatabytesize.md)
- [fActualNumSampleFrames](iokit/ioaudiobufferdatadescriptor/1584546-factualnumsampleframes.md)
- [fData](iokit/ioaudiobufferdatadescriptor/1584642-fdata.md)
- [fNominalDataByteSize](iokit/ioaudiobufferdatadescriptor/1584548-fnominaldatabytesize.md)
- [fTotalDataByteSize](iokit/ioaudiobufferdatadescriptor/1584614-ftotaldatabytesize.md)