---
title: IOAudioBufferDataDescriptor
framework: kernel
role: symbol
role_heading: Type Alias
path: kernel/ioaudiobufferdatadescriptor
---

# IOAudioBufferDataDescriptor

## Declaration

```occ
typedef struct _IOAudioBufferDataDescriptor IOAudioBufferDataDescriptor;
```

## Topics

### Instance Properties

- [fActualDataByteSize](kernel/ioaudiobufferdatadescriptor/1491191-factualdatabytesize.md)
- [fActualNumSampleFrames](kernel/ioaudiobufferdatadescriptor/1491096-factualnumsampleframes.md)
- [fData](kernel/ioaudiobufferdatadescriptor/1491097-fdata.md)
- [fNominalDataByteSize](kernel/ioaudiobufferdatadescriptor/1491284-fnominaldatabytesize.md)
- [fTotalDataByteSize](kernel/ioaudiobufferdatadescriptor/1491297-ftotaldatabytesize.md)

## See Also

### Descriptors

- [IOAudioSampleIntervalDescriptor](kernel/ioaudiosampleintervaldescriptor.md)
- [IOAudioStreamDataDescriptor](kernel/ioaudiostreamdatadescriptor.md)