---
title: CMIODeviceAVCCommand
framework: Core Media I/O
role: symbol
role_heading: Structure
platforms: [Mac Catalyst 13.1+, macOS 10.7+]
path: coremediaio/cmiodeviceavccommand
---

# CMIODeviceAVCCommand

## Declaration

```swift
struct CMIODeviceAVCCommand
```

## Topics

### Initializers

- [init()](coremediaio/cmiodeviceavccommand/init().md)
- [init(mCommand:mCommandLength:mResponse:mResponseLength:mResponseUsed:)](coremediaio/cmiodeviceavccommand/init(mcommand:mcommandlength:mresponse:mresponselength:mresponseused:).md)

### Instance Properties

- [mCommand](coremediaio/cmiodeviceavccommand/mcommand.md)
- [mCommandLength](coremediaio/cmiodeviceavccommand/mcommandlength.md)
- [mResponse](coremediaio/cmiodeviceavccommand/mresponse.md)
- [mResponseLength](coremediaio/cmiodeviceavccommand/mresponselength.md)
- [mResponseUsed](coremediaio/cmiodeviceavccommand/mresponseused.md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)

## See Also

### Structures

- [CMIODeviceRS422Command](coremediaio/cmiodevicers422command.md)
- [CMIODeviceSMPTETimeCallback](coremediaio/cmiodevicesmptetimecallback.md)
- [CMIODeviceStreamConfiguration](coremediaio/cmiodevicestreamconfiguration.md)
- [CMIOObjectPropertyAddress](coremediaio/cmioobjectpropertyaddress.md)
- [CMIOStreamDeck](coremediaio/cmiostreamdeck.md)
- [CMIOStreamScheduledOutputNotificationProcAndRefCon](coremediaio/cmiostreamscheduledoutputnotificationprocandrefcon.md)