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  "title" : "DAL plug-in data types"
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# DAL plug-in data types

## Topics

### Data Types

[`typealias CMIOClassID`](/documentation/CoreMediaIO/CMIOClassID)

[`typealias CMIOControlID`](/documentation/CoreMediaIO/CMIOControlID)

[`typealias CMIODeviceGetSMPTETimeProc`](/documentation/CoreMediaIO/CMIODeviceGetSMPTETimeProc)

[`typealias CMIODeviceID`](/documentation/CoreMediaIO/CMIODeviceID)

[`typealias CMIODevicePropertyID`](/documentation/CoreMediaIO/CMIODevicePropertyID)

[`typealias CMIODeviceStreamQueueAlteredProc`](/documentation/CoreMediaIO/CMIODeviceStreamQueueAlteredProc)

[`typedef CMIOHardwarePlugInInterface ** CMIOHardwarePlugInRef;`](/documentation/CoreMediaIO/CMIOHardwarePlugInRef)

[`typealias CMIOHardwarePropertyID`](/documentation/CoreMediaIO/CMIOHardwarePropertyID)

[`typealias CMIOObjectID`](/documentation/CoreMediaIO/CMIOObjectID)

[`typealias CMIOObjectPropertyElement`](/documentation/CoreMediaIO/CMIOObjectPropertyElement)

[`typealias CMIOObjectPropertyListenerBlock`](/documentation/CoreMediaIO/CMIOObjectPropertyListenerBlock)

[`typealias CMIOObjectPropertyListenerProc`](/documentation/CoreMediaIO/CMIOObjectPropertyListenerProc)

[`typealias CMIOObjectPropertyScope`](/documentation/CoreMediaIO/CMIOObjectPropertyScope)

[`typealias CMIOObjectPropertySelector`](/documentation/CoreMediaIO/CMIOObjectPropertySelector)

[`typealias CMIOStreamID`](/documentation/CoreMediaIO/CMIOStreamID)

[`typealias CMIOStreamScheduledOutputNotificationProc`](/documentation/CoreMediaIO/CMIOStreamScheduledOutputNotificationProc)

[`struct CMIOExtensionProperty`](/documentation/CoreMediaIO/CMIOExtensionProperty)

A structure that defines the properties that providers, devices, and streams support.


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