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# NumBytesToNumAudioFileMarkers(_:)

A macro that returns the number of audio file markers represented by a specified number of bytes.

```
func NumBytesToNumAudioFileMarkers(_ inNumBytes: Int) -> Int
```

## Parameters

`inNumBytes`

The number of bytes for which you wish to know the equivalent number of audio file markers.

## Return Value

The number of audio file markers that can be contained in the specified number of bytes.

## Discussion

Use this convenience macro when you call the [`AudioFileGetProperty(_:_:_:_:)`](/documentation/AudioToolbox/AudioFileGetProperty(_:_:_:_:)) function with the [`kAudioFilePropertyMarkerList`](/documentation/AudioToolbox/kAudioFilePropertyMarkerList) property to calculate the number of markers that will be returned.

## See Also

[`AudioFileGetProperty`](/documentation/AudioToolbox/AudioFileGetProperty(_:_:_:_:))

Gets the value of an audio file property.


---

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