---
title: GetNumberAvailableStreamFormats
framework: audiodriverkit
role: symbol
role_heading: Instance Method
path: audiodriverkit/iouseraudiostream/getnumberavailablestreamformats
---

# GetNumberAvailableStreamFormats

Returns the number of available stream formats.

## Declaration

```occ
size_t GetNumberAvailableStreamFormats();
```

## Return Value

Return Value The number of available stream formats, as a size_t.

## Discussion

Discussion This method synchronizes by using the work queue created by the object.

## See Also

### Working with Stream Formats

- [SetCurrentStreamFormat](audiodriverkit/iouseraudiostream/setcurrentstreamformat.md)
- [GetCurrentStreamFormat](audiodriverkit/iouseraudiostream/getcurrentstreamformat.md)
- [SetAvailableStreamFormats](audiodriverkit/iouseraudiostream/setavailablestreamformats.md)
- [GetAvailableStreamFormats](audiodriverkit/iouseraudiostream/getavailablestreamformats.md)
- [IOUserAudioStreamBasicDescription](audiodriverkit/audiodriverkit/iouseraudiostreambasicdescription.md)
- [GetStreamDirection](audiodriverkit/iouseraudiostream/getstreamdirection.md)
- [IOUserAudioStreamDirection](audiodriverkit/audiodriverkit/iouseraudiostreamdirection.md)
- [SetStreamIsActive](audiodriverkit/iouseraudiostream/setstreamisactive.md)
- [GetStreamIsActive](audiodriverkit/iouseraudiostream/getstreamisactive.md)