selectAudioTrack method

Future<int?> selectAudioTrack(int index)

@detail api @brief Specifies the playback track of the current media file. @param index The specified playback audio track, starting from 0, and the range is [0, getAudioTrackCount()-1]. The value must be less than the return value of getAudioTrackCount{@link #IMediaPlayer#getAudioTrackCount}. @return - 0: Success. - < 0 : Fail. See ReturnStatus{@link #ReturnStatus} for more details. @note - Call this API only when audio is mixing. - This API is valid for audio file, not PCM data. - After calling this API, you will receive onMediaPlayerEvent{@link #IMediaPlayerEventHandler#onMediaPlayerEvent} callback.

Implementation

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

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