Playing an Audio File

This API is used to play a local audio file in AAC format. Connect a headset or sound box to the audio output port of the HiLens Kit device. You can hear the sound calling this API.

• API calling

  hilens.play_aac_file(file_path, vol)

• Parameter description

  Table 1 Parameters

  Parameter	Mandatory	Type	Description
  file_path	Yes	Character string	Absolute path of the local audio file
  vol	Yes	Integer	Volume of the audio file to be played. The value range is [-121, 6].

• Return value

  If the operation is successful, 0 is returned. Otherwise, the operation fails.