Playing an Audio File

This section describes how 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

  HiLensEC PlayAacFile(const std::string filePath, int vol)

• Parameter description

  Table 1 Parameters

  Parameter	Description
  filePath	Absolute path of the local audio file. Chinese characters are not supported.
  vol	Volume of the audio to be played. The value range is [-121, 6].

  

  This API and the API in Constructing Audio Collectors cannot be called at the same time.

• Return Value

  If the return value is 0, the operation is successful. Otherwise, the operation fails. Refer to Error Codes for details about the failure response parameters.