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# Audio Codec Component Constants

Audio codec component types.

## Discussion

Some possible audio codec component subtypes are listed in the format IDs enumeration in the CoreAudioTypes.h header file (see <doc://com.apple.documentation/documentation/CoreAudio/core-audio-data-types>).

## Topics

### Constants

[`var kAudioDecoderComponentType: UInt32`](/documentation/AudioToolbox/kAudioDecoderComponentType)

A codec that translates data in some other format into linear PCM.

[`var kAudioEncoderComponentType: UInt32`](/documentation/AudioToolbox/kAudioEncoderComponentType)

A codec that translates linear PCM data into some other format

[`var kAudioUnityCodecComponentType: UInt32`](/documentation/AudioToolbox/kAudioUnityCodecComponentType)


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