# Copyright 2025 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Utility functions for handling dataset object categories."""


def coco_split_class_ids(split_name):
  """Return the COCO class split ids based on split name and training mode.

  Args:
    split_name: The name of dataset split.

  Returns:
    class_ids: a python list of integer.
  """
  if split_name == 'all':
    return []

  elif split_name == 'voc':
    return [
        1, 2, 3, 4, 5, 6, 7, 9, 16, 17, 18, 19, 20, 21, 44, 62, 63, 64, 67, 72
    ]

  elif split_name == 'nonvoc':
    return [
        8, 10, 11, 13, 14, 15, 22, 23, 24, 25, 27, 28, 31, 32, 33, 34, 35, 36,
        37, 38, 39, 40, 41, 42, 43, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56,
        57, 58, 59, 60, 61, 65, 70, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 84,
        85, 86, 87, 88, 89, 90
    ]

  else:
    raise ValueError('Invalid split name {}!!!'.format(split_name))
