1 /**
2 * Copyright 2021 Huawei Technologies Co., Ltd
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 #include <sys/stat.h>
17 #include <unistd.h>
18 #include <map>
19 #include <memory>
20 #include <set>
21 #include <string>
22 #include <unordered_map>
23 #include <unordered_set>
24 #include <utility>
25 #include <vector>
26
27 #include "include/dataset/datasets.h"
28 #include "include/dataset/iterator.h"
29 #include "include/dataset/vision_lite.h"
30 #include "include/dataset/transforms.h"
31 #include "include/api/types.h"
32
33 using mindspore::dataset::Dataset;
34 using mindspore::dataset::Iterator;
35 using mindspore::dataset::Mnist;
36 using mindspore::dataset::TensorTransform;
37
main(int argc,char ** argv)38 int main(int argc, char **argv) {
39 std::string folder_path = "./testMnistData/";
40 std::shared_ptr<Dataset> ds = Mnist(folder_path, "all");
41
42 std::shared_ptr<TensorTransform> resize(new mindspore::dataset::vision::Resize({32, 32}));
43 ds = ds->Map({resize});
44
45 ds = ds->Shuffle(2);
46 ds = ds->Batch(2);
47
48 std::shared_ptr<Iterator> iter = ds->CreateIterator();
49
50 std::unordered_map<std::string, mindspore::MSTensor> row;
51 iter->GetNextRow(&row);
52
53 while (row.size() != 0) {
54 iter->GetNextRow(&row);
55 }
56
57 iter->Stop();
58 }
59