code: def get_bits_per_sample(ext, dtype):
      bits_per_samples = {
          "flac": 24,
          "mp3": 0,
          "vorbis": 0,
      }
      return bits_per_samples.get(ext, sox_utils.get_bit_depth(dtype))
  
label_desc: Use image node_id 2 for calling a global function with example usage: get_bits_per_sample(ext, dtype) and returns: bits_per_samples