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# Copyright 2023 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.
"""Factory for getting TF-Vision input readers."""
from official.common import dataset_fn as dataset_fn_util
from official.core import config_definitions as cfg
from official.core import input_reader as core_input_reader
from official.vision.dataloaders import input_reader as vision_input_reader
def input_reader_generator(params: cfg.DataConfig,
**kwargs) -> core_input_reader.InputReader:
"""Instantiates an input reader class according to the params.
Args:
params: A config_definitions.DataConfig object.
**kwargs: Additional arguments passed to input reader initialization.
Returns:
An InputReader object.
"""
if params.is_training and params.get('pseudo_label_data', False):
return vision_input_reader.CombinationDatasetInputReader(
params,
pseudo_label_dataset_fn=dataset_fn_util.pick_dataset_fn(
params.pseudo_label_data.file_type),
**kwargs)
else:
return core_input_reader.InputReader(params, **kwargs)
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