struct TrackPreferenceStruct

Defines Text/Audio Track preferences.
- `


  ### [languageCode](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/TrackPreferenceStruct#/s:15GoogleHomeTypes6MatterO20ContentLauncherTraitV21TrackPreferenceStructV12languageCodeSSvp)


  ` Identifies the primary language used in the Track.

  #### Declaration

  Swift

      let languageCode: String

- `


  ### [characteristics](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/TrackPreferenceStruct#/s:15GoogleHomeTypes6MatterO20ContentLauncherTraitV21TrackPreferenceStructV15characteristicsSayAE18CharacteristicEnumOGSgvp)


  ` Indicate a purpose, trait or feature associated with the Track.

  #### Declaration

  Swift

      let characteristics: [https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter.html.https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait.html.https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/CharacteristicEnum.html]?

- `


  ### [audioOutputIndex](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/TrackPreferenceStruct#/s:15GoogleHomeTypes6MatterO20ContentLauncherTraitV21TrackPreferenceStructV16audioOutputIndexs5UInt8Vvp)


  ` Indicates which audio output the Audio Track should be played on.

  #### Declaration

  Swift

      let audioOutputIndex: UInt8

- `


  ### [init(decoder:)](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/TrackPreferenceStruct#/s:15GoogleHomeTypes6MatterO20ContentLauncherTraitV21TrackPreferenceStructV7decoderAG0aB3SDK0G7DecoderV_tKcfc)


  ` Creates a new Struct instance using data read from the given `TraitDecoder`.
  Throws
  `HomeError.parseError` when parsing fails.

  #### Declaration

  Swift

      init(decoder: TraitDecoder) throws

  #### Parameters

  |---|---|
  | ` decoder ` | The raw data representing this Struct. |

- `


  ### [encode(with:)](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/TrackPreferenceStruct#/s:15GoogleHomeTypes6MatterO20ContentLauncherTraitV21TrackPreferenceStructV6encode4withy0aB3SDK0G7EncoderC_tKF)


  ` Writes this Struct to the given `TraitEncoder`.
  Throws `HomeError.parseError` if the data could not be encoded.

  #### Declaration

  Swift

      func encode(with encoder: TraitEncoder) throws

- `


  ### [structField(id:)](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/TrackPreferenceStruct#/s:15GoogleHomeTypes6MatterO20ContentLauncherTraitV21TrackPreferenceStructV11structField2id0aB3SDK0L0_pSgs6UInt32V_tFZ)


  ` Returns the field corresponding to the given field ID.

  #### Declaration

  Swift

      static func structField(id: UInt32) -> (any Field)?