code: def get_vgg2l_odim(idim, in_channel=3, out_channel=128):
      """Return the output size of the VGG frontend.
  
      :param in_channel: input channel size
      :param out_channel: output channel size
      :return: output size
      :rtype int
      """
      idim = idim / in_channel
      idim = np.ceil(
          np.array(idim, dtype=np.float32) / 2
      )  # 1st max pooling
      idim = np.ceil(
          np.array(idim, dtype=np.float32) / 2
      )  # 2nd max pooling
      return int(idim) * out_channel
  
file_path: espnet/espnet/nets/e2e_asr_common.py
imports: import json
  import logging
  import sys
  from itertools import groupby
  import numpy
label_desc: Use image node_id 3 for calling a global function with example usage: get_vgg2l_odim(idim, in_channel, out_channel) and returns: unknown