AudioToolbox Enumerations

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Enumerations

3D Mixer Audio Unit Properties

Properties for the Apple 3D Mixer audio unit.

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3D Mixer Unit Parameters

Parameters for the 3D Mixer unit.

AUEventSampleTime

Expresses time as a sample count.

AUParameterEventType

Audio unit parameter event types.

Additional Reverb Parameters

Additional reverb parameters.

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Audio Codec Priming Method Constants

Values used with kAudioCodecPropertyPrimeMethod.

Audio Codec Quality Constants

Sound quality settings to be used with the property kAudioCodecPropertyQualitySetting.

Audio Codec Routine Selectors

Selectors used by the Component Manager to call routines implemented by the codec and exposed to developers through the Audio Codec Services API. These selectors are for use by codec developers; if you are calling Audio Codec Services functions, you don’t need to use these constants.

Audio Hardware Services Properties

Property identifiers that apply to HAL audio objects only when accessed via the Audio Hardware Services.

Audio Unit Manufacturer Identifier

The Apple audio unit manufacturer code.

Audio Unit Sample Rate Converter Complexity

Quality levels for the audio sample-rate conversion algorithm.

Audio Unit Scopes

Programmatic roles and contexts for audio unit properties.

Audio Unit Types

The defined types of audio processing plug-ins known as audio units.

AudioBalanceFadeType

Identifiers for audio balance fade types.

AudioFilePermissions

Flags for use with the AudioFileOpenURL and AudioFileOpen functions.

AudioFileRegionFlags

Flags that specify a playback direction for an AudioFileRegion structure.

AudioPanningMode

Identifiers for audio panning algorithms.

AudioUnitParameterOptions

Value options for audio unit parameters.

AudioUnitParameterUnit

The unit-of-measure for an audio unit parameter.

AudioUnitRenderActionFlags

Flags for configuring audio unit rendering.

Bandpass Unit Parameters

Parameters for the Bandpass unit.

Bit Rate Control Mode Constants

Bit rate control modes to be used with kAudioCodecPropertyBitRateControlMode.

Converter Audio Unit Properties

Properties for the Apple AUConverter audio unit.

Converter Audio Unit Subtypes

Audio data format converter audio unit subtypes for audio units provided by Apple.

Dynamics Processor Unit Parameters

Parameters for the Dynamics Processor unit.

Effect Audio Unit Subtypes

Effect (digital signal processing) audio unit subtypes for audio units provided by Apple.

Frequency Response Constants

The maximum number of frequency response bin structures for the AudioUnitProperty_FrequencyResponse property.

General Audio Unit Function Selectors

General audio unit component selectors that correspond to functions in the audio unit API.

Generator Audio Unit Subtypes

Audio units that serve as sound sources.

Generic Audio Unit Properties

Properties that apply to any audio unit.

Global Codec Properties

These read-only properties disclose the capabilities of the codec and remain the same for all instances of the codec.

High Shelf Filter Unit Parameters

Parameters for the High Shelf Filter unit.

Highpass Unit Parameters

Parameters for the Highpass unit.

I/O Audio Unit Function Selectors

Audio unit component selectors, specific to I/O audio units, that correspond to functions in the audio unit API.

I/O Audio Unit Properties

Properties for Apple I/O audio units (sometimes called output units).

Input/Output Audio Unit Subtypes

Input/output audio unit subtypes for audio units provided by Apple.

Instance Codec Properties

Properties that can be set or read on an instance of the audio codec.

Low Shelf Filter Unit Parameters

Parameters for the Low Shelf Filter unit.

Lowpass Unit Parameters

Parameters for the Lowpass unit.

MIDI Audio Unit Parameters

Parameters for instrument units.

Mixer Audio Unit Properties

Properties for Apple mixer audio units.

Mixer Audio Unit Subtypes

Audio mixing audio unit subtypes for audio units provided by Apple.

Multichannel Mixer Unit Parameters

Parameters for the Multichannel Mixer unit.

Music Instrument Audio Unit Subtypes

Audio units that can be played as musical instruments via MIDI control.

Music Track Properties

Properties for music tracks.

MusicSequenceFileFlags

Flags that configure the behavior of the MusicSequenceFileCreate and MusicSequenceFileCreateData functions.

MusicSequenceFileTypeID

The various types of files that can be parsed by a music sequence.

MusicSequenceLoadFlags

Flags used to configure the behavior of the MusicSequenceFileLoad and MusicSequenceFileLoadData functions.

MusicSequenceType

The various types of music sequences.

Mutitype EQ Unit Filter Types

Values for the kAUNBandEQParam_FilterType parameter of the Multitype EQ (NBandEQ) unit.

Offline Audio Unit Properties

Properties for audio units that perform offline processing—that is, processing in a nonplayback, nonrealtime mode.

Output Status Constants

Status values returned from the AudioCodecProduceOutputPackets function.

Parametric EQ Unit Parameters

Parameters for the Parametric EQ unit.

Peak Limiter Unit Parameters

Parameters for the Peak Limiter unit.

RenderQuality

Render quality settings for audio units.

Reserved Audio Unit Clump Identifier

Reserved for system use.

Reverb Unit Parameters

Parameters for the Reverb unit.

Varispeed Unit Parameters

Parameters for the Varispeed unit.

Voice-Processing I/O Audio Unit Properties

Properties that apply to the Apple voice-processing I/O audio unit.