setLoudness method

Future<int?> setLoudness(float loudness)

@detail api @brief To call enableVocalInstrumentBalance{@link #RTCEngine#enableVocalInstrumentBalance} to adjust the volume of the mixed media file or the PCM audio data, you must pass in its original loudness through this API. @param loudness Original loudness in lufs. The range is [-70.0, 0.0].
When the value is less than -70.0lufs, it will be adjusted to -70.0lufs by default, and if it is more than 0.0lufs, the loudness will not be equalized. The default value is 1.0lufs, which means no processing. @return - 0: Success. - < 0 : Fail. See ReturnStatus{@link #ReturnStatus} for more details. @note - Call this API only when audio is mixing. - The API is valid for audio file and PCM data.

Implementation

Future<int?> setLoudness(float loudness) async {
  $a() => ($instance as $p_a.IMediaPlayer).setLoudness(loudness);
  $i() => ($instance as $p_i.ByteRTCMediaPlayer).setLoudness(loudness);

  if (Platform.isAndroid) {
    return $a();
  } else if (Platform.isIOS) {
    return $i();
  } else {
    throw UnsupportedError(
        'Not Support Platform ${Platform.operatingSystem}');
  }
}