// Copyright (c) 2023 Huawei Technologies Co., Ltd
// All rights reserved.
//
// Licensed under the BSD 3-Clause License  (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://opensource.org/licenses/BSD-3-Clause
//
// 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 "op_plugin/AclOpsInterface.h"
#include "op_plugin/OpApiInterface.h"
#include "op_plugin/utils/op_api_common.h"

namespace op_api {
using npu_preparation = at_npu::native::OpPreparation;

at::Tensor& upsample_nearest2d_backward_out(
    const at::Tensor& grad_output,
    at::IntArrayRef output_size,
    at::IntArrayRef input_size,
    c10::optional<double> scales_h,
    c10::optional<double> scales_w,
    at::Tensor& grad_input)
{
    DO_COMPATIBILITY(aclnnUpsampleNearest2dBackward, acl_op::upsample_nearest2d_backward_out(grad_output, output_size, input_size, scales_h, scales_w, grad_input));
    npu_preparation::check_tensor({grad_output}, grad_input, grad_output, input_size);
    double scales_h_attr = scales_h.value_or(-1);
    double scales_w_attr = scales_w.value_or(-1);
    EXEC_NPU_CMD(aclnnUpsampleNearest2dBackward, grad_output, output_size, input_size, scales_h_attr, scales_w_attr, grad_input);
    return grad_input;
}

at::Tensor upsample_nearest2d_backward(
    const at::Tensor& grad_output,
    at::IntArrayRef output_size,
    at::IntArrayRef input_size,
    c10::optional<double> scales_h,
    c10::optional<double> scales_w)
{
    DO_COMPATIBILITY(aclnnUpsampleNearest2dBackward, acl_op::upsample_nearest2d_backward(grad_output, output_size, input_size, scales_h, scales_w));
    at::Tensor grad_input = npu_preparation::apply_tensor_without_format(grad_output, input_size);
    double scales_h_attr = scales_h.value_or(-1);
    double scales_w_attr = scales_w.value_or(-1);
    EXEC_NPU_CMD(aclnnUpsampleNearest2dBackward, grad_output, output_size, input_size, scales_h_attr, scales_w_attr, grad_input);
    return grad_input;
}
}