Dequantize.cpp

Go to the documentation of this file.

/*
 * Copyright (c) 2022 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 "kernels/Dequantize.h"
#include "kernels/Utils.h"
#include "PALDequantize.h"
 
namespace luci_interpreter
{
namespace kernels
{
 
Dequantize::Dequantize(const Tensor *input, Tensor *output) : Kernel({input}, {output}) {}
 
void Dequantize::configure()
{
  LUCI_INTERPRETER_CHECK(input()->element_type() == loco::DataType::S8 ||
                         input()->element_type() == loco::DataType::U8 ||
                         input()->element_type() == loco::DataType::S16);
 
  LUCI_INTERPRETER_CHECK(input()->scales().size() == 1);
 
  if (input()->element_type() == loco::DataType::S16)
    LUCI_INTERPRETER_CHECK(input()->zero_point() == 0);
 
  LUCI_INTERPRETER_CHECK(output()->element_type() == loco::DataType::FLOAT32);
 
  output()->resize(input()->shape());
}
 
void Dequantize::execute() const
{
  tflite::DequantizationParams op_params;
  op_params.zero_point = input()->zero_point();
  op_params.scale = input()->scale();
 
  switch (input()->element_type())
  {
    case loco::DataType::U8:
    {
      luci_interpreter_pal::Dequantize(op_params, getTensorShape(input()),
                                       getTensorData<uint8_t>(input()), getTensorShape(output()),
                                       getTensorData<float>(output()));
      break;
    }
    case loco::DataType::S8:
    {
      luci_interpreter_pal::Dequantize(op_params, getTensorShape(input()),
                                       getTensorData<int8_t>(input()), getTensorShape(output()),
                                       getTensorData<float>(output()));
      break;
    }
    case loco::DataType::S16:
    {
      luci_interpreter_pal::Dequantize(op_params, getTensorShape(input()),
                                       getTensorData<int16_t>(input()), getTensorShape(output()),
                                       getTensorData<float>(output()));
      break;
    }
    default:
      throw std::runtime_error("luci-intp Dequantize Unsupported type.");
  }
}
 
} // namespace kernels
} // namespace luci_interpreter