---
title: "AudioDeviceCreateIOProcID(_:_:_:_:)"
framework: coreaudio
role: symbol
role_heading: Function
path: "coreaudio/audiodevicecreateioprocid(_:_:_:_:)"
---

# AudioDeviceCreateIOProcID(_:_:_:_:)

## Declaration

```swift
func AudioDeviceCreateIOProcID(_ inDevice: AudioObjectID, _ inProc: AudioDeviceIOProc, _ inClientData: UnsafeMutableRawPointer?, _ outIOProcID: UnsafeMutablePointer<AudioDeviceIOProcID?>) -> OSStatus
```

## Parameters

- `inDevice`: The AudioDevice to register the IOProc with.
- `inProc`: The AudioDeviceIOProc to register.
- `inClientData`: A pointer to client data that is passed back to the IOProc when it is called.
- `outIOProcID`: The newly created AudioDeviceIOProcID.

## Return Value

Return Value An OSStatus indicating success or failure.

## Discussion

Discussion Creates an AudioDeviceIOProcID from an AudioDeviceIOProc and a client data pointer. AudioDeviceIOProcIDs allow for the client to register the same function pointer with a device multiple times

## See Also

### Functions

- [AudioConvertHostTimeToNanos(_:)](coreaudio/audioconverthosttimetonanos(_:).md)
- [AudioConvertNanosToHostTime(_:)](coreaudio/audioconvertnanostohosttime(_:).md)
- [AudioDeviceCreateIOProcIDWithBlock(_:_:_:_:)](coreaudio/audiodevicecreateioprocidwithblock(_:_:_:_:).md)
- [AudioDeviceDestroyIOProcID(_:_:)](coreaudio/audiodevicedestroyioprocid(_:_:).md)
- [AudioDeviceGetCurrentTime(_:_:)](coreaudio/audiodevicegetcurrenttime(_:_:).md)
- [AudioDeviceGetNearestStartTime(_:_:_:)](coreaudio/audiodevicegetneareststarttime(_:_:_:).md)
- [AudioDeviceStart(_:_:)](coreaudio/audiodevicestart(_:_:).md)
- [AudioDeviceStartAtTime(_:_:_:_:)](coreaudio/audiodevicestartattime(_:_:_:_:).md)
- [AudioDeviceStop(_:_:)](coreaudio/audiodevicestop(_:_:).md)
- [AudioDeviceTranslateTime(_:_:_:)](coreaudio/audiodevicetranslatetime(_:_:_:).md)
- [AudioGetCurrentHostTime()](coreaudio/audiogetcurrenthosttime().md)
- [AudioGetHostClockFrequency()](coreaudio/audiogethostclockfrequency().md)
- [AudioGetHostClockMinimumTimeDelta()](coreaudio/audiogethostclockminimumtimedelta().md)
- [AudioHardwareCreateAggregateDevice(_:_:)](coreaudio/audiohardwarecreateaggregatedevice(_:_:).md)
- [AudioHardwareDestroyAggregateDevice(_:)](coreaudio/audiohardwaredestroyaggregatedevice(_:).md)