Class

AUAudioUnitBus

The AUAudioUnitBus class defines an input or output connection point on an audio unit.

Declaration

@interface AUAudioUnitBus : NSObject

Topics

Bus Methods and Properties

- setFormat:error:

Sets the bus’s audio format.

format

The audio format and channel layout of audio being transferred on the bus.

enabled

Determines whether the bus is active.

name

A name for the bus.

index

The index of this bus in its containing array.

busType

The bus type.

ownerAudioUnit

The audio unit that owns the bus.

supportedChannelLayoutTags

An array of audio channel layout tags.

contextPresentationLatency

Information about latency in the audio unit’s processing context.

Audio Unit Implementations

These methods and properties are only of interest to audio unit subclasses.

- initWithFormat:error:

Initializes a bus object with a specific format.

supportedChannelCounts

An array of numbers indicating the supported number of channels for this bus.

maximumChannelCount

The maximum number of channels supported for this bus.

Relationships

Inherits From

See Also

Audio Unit v3

AUAudioUnit

The AUAudioUnit class defines a host’s interface to an audio unit.

AUAudioUnitBusArray

The AUAudioUnitBusArray class defines a container for an audio unit’s input or output busses.

AUAudioUnitPreset

The AUAudioUnitPreset class describes an interface for custom parameter settings provided by the audio unit developer. These presets often produce a useful sound or starting point.

AUAudioUnitV2Bridge

The AUAudioUnitV2Bridge class wraps a version 2 audio unit in an AUAudioUnit subclass.

AUParameter

An AUParameter object represents a single audio unit parameter.

AUParameterGroup

An AUParameterGroup object represents a group of related audio unit parameters. A parameter group is KVC-compliant for its children.

AUParameterNode

An AUParameterNode object represents a node in an audio unit’s parameter tree. Nodes are instances of either an AUParameter or AUParameterGroup class.

AUParameterTree

An AUParameterTree object is a top-level group node, representing all of an audio unit’s parameters. An audio unit’s parameters are organized into a tree containing groups and parameters (groups may be nested).

AUAudioUnitFactory

Implement this protocol to create a version 3 audio unit.

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