Driver.cpp

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/*
 * Copyright (c) 2020 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 <iostream>
#include <memory>
#include <string>
#include <vector>
 
#include <arser/arser.h>
 
#include "CircleModel.h"
#include "TFLModel.h"
 
#include <vconone/vconone.h>
 
void print_version(void)
{
  std::cout << "tflite2circle version " << vconone::get_string() << std::endl;
  std::cout << vconone::get_copyright() << std::endl;
}
 
int entry(int argc, char **argv)
{
  arser::Arser arser{"tflite2circle is a Tensorflow lite to circle model converter"};
 
  arser::Helper::add_version(arser, print_version);
  arser::Helper::add_verbose(arser);
 
  arser.add_argument("tflite").help("Source tflite file path to convert");
  arser.add_argument("circle").help("Target circle file path");
 
  try
  {
    arser.parse(argc, argv);
  }
  catch (const std::runtime_error &err)
  {
    std::cerr << err.what() << std::endl;
    std::cout << arser;
    return 255;
  }
 
  std::string tfl_path = arser.get<std::string>("tflite");
  std::string circle_path = arser.get<std::string>("circle");
  // read tflite file
  tflite2circle::TFLModel tfl_model(tfl_path);
  if (not tfl_model.verify_data())
  {
    std::cerr << "ERROR: Failed to verify tflite '" << tfl_path << "'" << std::endl;
    return 255;
  }
 
  // create flatbuffer builder
  auto flatbuffer_builder = std::make_unique<flatbuffers::FlatBufferBuilder>(1024);
 
  // convert tflite to circle
  const std::vector<char> &raw_data = tfl_model.raw_data();
  tflite2circle::CircleModel circle_model{flatbuffer_builder, raw_data};
 
  circle_model.load_offsets(tfl_model.get_model());
  circle_model.model_build();
  circle_model.finalize();
 
  std::ofstream outfile{circle_path, std::ios::binary};
 
  outfile.write(circle_model.base(), circle_model.size());
  outfile.close();
  // TODO find a better way of error handling
  if (outfile.fail())
  {
    std::cerr << "ERROR: Failed to write circle '" << circle_path << "'" << std::endl;
    return 255;
  }
 
  return 0;
}