mindspore2022/mindspore/ccsrc/dataset/kernels/py_func_op.h

/**
 * Copyright 2019 Huawei Technologies Co., Ltd
 *
 * 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.
 */

#ifndef DATASET_KERNELS_PY_FUNC_OP_H_
#define DATASET_KERNELS_PY_FUNC_OP_H_

#include <memory>
#include <vector>
#include <utility>

#include "dataset/core/tensor.h"
#include "dataset/kernels/tensor_op.h"

namespace mindspore {
namespace dataset {
class __attribute__((visibility("hidden"))) PyFuncOp : public TensorOp {
 public:
  explicit PyFuncOp(py::function func) : py_func_ptr_(std::move(func)) {}

  ~PyFuncOp() override = default;

  uint32_t NumInput() override { return 0; }
  uint32_t NumOutput() override { return 0; }

  // Compute function for n-n mapping.
  Status Compute(const std::vector<std::shared_ptr<Tensor>> &input,
                 std::vector<std::shared_ptr<Tensor>> *output) override;

 private:
  py::function py_func_ptr_;
};
}  // namespace dataset
}  // namespace mindspore

#endif  // DATASET_KERNELS_PY_FUNC_OP_H_