forked from huawei/mindspore2022
89 lines
3.3 KiB
C++
89 lines
3.3 KiB
C++
/**
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* Copyright 2020 Huawei Technologies Co., Ltd
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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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*/
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#include <jni.h>
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#include <string>
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#include <fstream>
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#include <iostream>
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#include <memory>
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#include "minddata/dataset/include/dataset/datasets.h"
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#include "minddata/dataset/util/path.h"
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#if defined(__ANDROID__) || defined(ANDROID)
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#include <android/log.h>
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#include <android/asset_manager.h>
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#endif
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extern "C" JNIEXPORT jstring JNICALL Java_com_example_mindsporepredict_MainActivity_stringFromJNI(JNIEnv *env,
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jobject /* this */) {
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std::string hello = "Hello World!";
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MS_LOG(DEBUG) << hello;
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return env->NewStringUTF(hello.c_str());
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}
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using Dataset = mindspore::dataset::Dataset;
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using Iterator = mindspore::dataset::Iterator;
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using mindspore::dataset::Cifar10;
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using mindspore::dataset::Path;
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using mindspore::dataset::RandomSampler;
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using mindspore::dataset::Tensor;
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extern "C" JNIEXPORT void JNICALL Java_com_example_mindsporepredict_MainActivity_pathTest(JNIEnv *env,
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jobject /* this */,
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jstring path) {
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MS_LOG(WARNING) << env->GetStringUTFChars(path, 0);
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Path f(env->GetStringUTFChars(path, 0));
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MS_LOG(WARNING) << f.Exists() << f.IsDirectory() << f.ParentPath();
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// Print out the first few items in the directory
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auto dir_it = Path::DirIterator::OpenDirectory(&f);
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MS_LOG(WARNING) << dir_it.get();
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int i = 0;
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while (dir_it->hasNext()) {
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Path v = dir_it->next();
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MS_LOG(WARNING) << v.toString();
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i++;
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if (i > 5) break;
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}
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}
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extern "C" JNIEXPORT void JNICALL Java_com_example_mindsporepredict_MainActivity_TestCifar10Dataset(JNIEnv *env,
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jobject /* this */,
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jstring path) {
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MS_LOG(INFO) << "Doing MindDataTestPipeline-TestCifar10Dataset.";
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// Create a Cifar10 Dataset
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std::string folder_path = env->GetStringUTFChars(path, 0);
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std::shared_ptr<Dataset> ds = Cifar10(folder_path, std::string(), RandomSampler(false, 10));
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// Create an iterator over the result of the above dataset
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// This will trigger the creation of the Execution Tree and launch it.
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std::shared_ptr<Iterator> iter = ds->CreateIterator();
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// Iterate the dataset and get each row
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std::unordered_map<std::string, std::shared_ptr<Tensor>> row;
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iter->GetNextRow(&row);
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uint64_t i = 0;
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while (row.size() != 0) {
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i++;
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auto image = row["image"];
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MS_LOG(INFO) << "Tensor image shape: " << image->shape();
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iter->GetNextRow(&row);
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}
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// Manually terminate the pipeline
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iter->Stop();
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}
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