//*****************************************************************************
// Copyright 2017-2019 Intel Corporation
//
// 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.
//*****************************************************************************

#include "reorg_yolo.hpp"

#include "ngraph/op/constant.hpp"

using namespace std;
using namespace ngraph;

op::ReorgYolo::ReorgYolo(const shared_ptr<Node>& input, const Strides& strides)
    : Op("ReorgYolo", check_single_output_args({input}))
    , m_strides(strides)
{
    constructor_validate_and_infer_types();
}

void op::ReorgYolo::validate_and_infer_types()
{
    auto input_et = get_input_element_type(0);
    if (get_input_partial_shape(0).is_static())
    {
        auto input_shape = get_input_partial_shape(0).to_shape();
        Shape output_shape{input_shape[0], input_shape[1]};

        for (size_t i = 2; i < input_shape.size(); i++)
        {
            output_shape.push_back(input_shape[i] / m_strides[0]);
            output_shape[1] *= m_strides[0];
        }
        set_output_type(0, input_et, output_shape);
    }
    else
    {
        set_output_type(0, input_et, PartialShape::dynamic());
    }
}

shared_ptr<Node> op::ReorgYolo::copy_with_new_args(const NodeVector& new_args) const
{
    check_new_args_count(this, new_args);
    return make_shared<ReorgYolo>(new_args.at(0), m_strides);
}
