/*
 * Copyright (c) 2019 Samsung Electronics Co., Ltd. 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.
 */

#ifndef __NEURUN_BACKEND_SRCN_OPERATION_UTILS_H__
#define __NEURUN_BACKEND_SRCN_OPERATION_UTILS_H__

#include <iostream>
#include <limits>
#include <vector>

#include "model/Operand.h"
#include "model/DataType.h"
#include <model/InternalType.h>

using OperandType = neurun::model::DataType;
using neurun::util::Coordinates;

namespace neurun
{
namespace backend
{
namespace srcn
{
namespace kernel
{

struct Shape
{
  OperandType type;
  std::vector<uint32_t> dimensions;
  float scale;
  int32_t offset;
};

union DataPtr {
  uint8_t *u8;
  int8_t *i8;
  int32_t *i32;
  float *f;
  void *v;
};

enum FilterLayout
{
  OHWI = 0, // TfLite Kernel Layout when using NHWC image layout
  HWOI,     // SRCN Transpose Conv Kernel Layout when using NHWC image layout
  OIHW,     // SRCN Transpose Conv Kernel Layout when using NCHW image layout
};

uint32_t MatchingDim(const Shape &shape1, int index1, const Shape &shape2, int index2);

Coordinates convertCoordinates(const Coordinates &from_coordinates, FilterLayout from_layout,
                               FilterLayout to_layout);

Shape getShape(const ::neurun::model::Operand &o, ::neurun::model::Layout frontend_layout);

} // namespace kernel
} // namespace srcn
} // namespace backend
} // namespace neurun

#endif // __NEURUN_BACKEND_SRCN_OPERATION_UTILS_H__