50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from __future__ import print_function
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import numpy as np
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import os
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from paddle.io import Dataset
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from .. import dataloader
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class MixDataset(Dataset):
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def __init__(self, datasets_config):
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super(MixDataset, self).__init__()
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self.dataset_list = []
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start_idx = 0
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end_idx = 0
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for config_i in datasets_config:
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dataset_name = config_i.pop('name')
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dataset = getattr(dataloader, dataset_name)(**config_i)
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end_idx += len(dataset)
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self.dataset_list.append([end_idx, start_idx, dataset])
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start_idx = end_idx
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self.length = end_idx
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def __getitem__(self, idx):
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for dataset_i in self.dataset_list:
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if dataset_i[0] > idx:
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dataset_i_idx = idx - dataset_i[1]
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return dataset_i[2][dataset_i_idx]
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def __len__(self):
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return self.length
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def get_dataset_list(self):
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return self.dataset_list
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