code: def read_audio(audio_type, audio_file):
      if audio_type == AUDIO_TYPE_WAV:
          return read_wav(audio_file)
      if audio_type == AUDIO_TYPE_OPUS:
          return read_opus(audio_file)
      if audio_type == AUDIO_TYPE_OGG_OPUS:
          return read_ogg_opus(audio_file)
      raise ValueError("Unsupported audio type: {}".format(audio_type))
  
imports: import collections
  import ctypes
  import io
  import math
  import numpy
  import os
  import pyogg
  import tempfile
  import wave
  from .helpers import LimitingPool
  from collections import namedtuple
  from .io import open_remote, remove_remote, copy_remote, is_remote_path
label_desc: Use image node_id 21 for calling a global function with example usage: read_audio(audio_type, audio_file) and returns: read_wav, read_opus, read_ogg_opus