/* Copyright (c) 2022 PaddlePaddle 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. */

#pragma once

#include "paddle/phi/common/scalar.h"
#include "paddle/phi/core/meta_tensor.h"
namespace phi {

// Common InferMeta Functions for multiary operators, The format like:
//
//   1. The number of input MetaTensor is more than 3:
//      void [FunctionDesc|OpName]InferMeta(const MetaTensor& x,
//                                          const MetaTensor& y,
//                                          const MetaTensor& z,
//                                          const MetaTensor& w,
//                                          ...,
//                                          MetaTensor* out) {}
//
//   2. There are `const vector<MetaTensor*>&` in params:
//      void [FunctionDesc|OpName]InferMeta(const vector<MetaTensor*>& x,
//                                          ...,
//                                          MetaTensor* out) {}
//
// NOTE: The InferMeta Functions in this file are arranged in alphabetic order.

std::vector<DDim> GetMetaTensorsDim(const std::vector<MetaTensor*>& tensors);

void AdadeltaInferMeta(const MetaTensor& param,
                       const MetaTensor& grad,
                       const MetaTensor& avg_squared_grad,
                       const MetaTensor& avg_squared_update,
                       float rho,
                       float epsilon,
                       MetaTensor* param_out,
                       MetaTensor* avg_squared_grad_out,
                       MetaTensor* avg_squared_update_out);

void AdamaxInferMeta(const MetaTensor& param,
                     const MetaTensor& grad,
                     const MetaTensor& learning_rate,
                     const MetaTensor& moment,
                     const MetaTensor& inf_norm,
                     const MetaTensor& beta1_pow,
                     float beta1,
                     float beta2,
                     float epsilon,
                     MetaTensor* param_out,
                     MetaTensor* moment_out,
                     MetaTensor* inf_norm_out);

void AucInferMeta(const MetaTensor& input,
                  const MetaTensor& label,
                  const MetaTensor& stat_pos,
                  const MetaTensor& stat_neg,
                  const std::string& curve,
                  int num_thresholds,
                  int slide_steps,
                  MetaTensor* auc,
                  MetaTensor* stat_pos_out,
                  MetaTensor* stat_neg_out,
                  MetaConfig config = MetaConfig());

void BilinearTensorProductInferMeta(const MetaTensor& x,
                                    const MetaTensor& y,
                                    const MetaTensor& weight,
                                    paddle::optional<const MetaTensor&> bias,
                                    MetaTensor* out,
                                    MetaConfig config = MetaConfig());

void BroadcastTensorsInferMeta(const std::vector<MetaTensor*>& x,
                               std::vector<MetaTensor*> out);

void ConcatInferMeta(const std::vector<MetaTensor*>& x,
                     const Scalar& axis_scalar,
                     MetaTensor* out,
                     MetaConfig config = MetaConfig());

void MultiDotInferMeta(const std::vector<MetaTensor*>& x, MetaTensor* out);

void PsroiPoolInferMeta(const MetaTensor& x,
                        const MetaTensor& rois,
                        paddle::optional<const MetaTensor&> rois_num,
                        int pooled_height,
                        int pooled_width,
                        int output_channels,
                        float spatial_scale,
                        MetaTensor* out);

void WhereInferMeta(const MetaTensor& condition,
                    const MetaTensor& x,
                    const MetaTensor& y,
                    MetaTensor* out);

}  // namespace phi