/*
 * 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.
 */

#include "GatherLayer.h"

#include <cker/operation/Gather.h>

#include "OperationUtils.h"

namespace neurun
{
namespace backend
{
namespace cpu
{
namespace kernel
{

void GatherLayer::configure(uint8_t *inputData, const TensorDescriptor &inputDescr,
                            uint8_t *indicesData, const TensorDescriptor &indicesDescr,
                            uint8_t *outputData, const TensorDescriptor &outputDescr, int32_t axis)
{
  _inputData.u8 = inputData;
  _inputDescr = inputDescr;
  _indicesData.u8 = indicesData;
  _indicesDescr = indicesDescr;
  _axis = axis;
  _inputType = inputDescr.type;
  _outputData.u8 = outputData;
  _outputDescr = outputDescr;
}

void GatherLayer::run()
{
  nnfw::cker::GatherParams op_params;
  op_params.axis = _axis;

  switch (_inputType)
  {
    case OperandType::FLOAT32:
      nnfw::cker::Gather<float>(op_params, convertTensorDescriptorToCkerShape(_inputDescr),
                                _inputData.f, convertTensorDescriptorToCkerShape(_indicesDescr),
                                _indicesData.i32, convertTensorDescriptorToCkerShape(_outputDescr),
                                _outputData.f);
      break;
    case OperandType::QUANT8_ASYMM:
      nnfw::cker::Gather<uint8_t>(op_params, convertTensorDescriptorToCkerShape(_inputDescr),
                                  _inputData.u8, convertTensorDescriptorToCkerShape(_indicesDescr),
                                  _indicesData.i32,
                                  convertTensorDescriptorToCkerShape(_outputDescr), _outputData.u8);
      break;
    case OperandType::INT32:
      nnfw::cker::Gather<int32_t>(
          op_params, convertTensorDescriptorToCkerShape(_inputDescr), _inputData.i32,
          convertTensorDescriptorToCkerShape(_indicesDescr), _indicesData.i32,
          convertTensorDescriptorToCkerShape(_outputDescr), _outputData.i32);
      break;
    default:
      throw std::runtime_error("Gather NYI for this operand type!");
  }
}

} // namespace kernel
} // namespace cpu
} // namespace backend
} // namespace neurun