/*************************************************************************
 * Copyright (C) [2019] by Cambricon, Inc. 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
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *************************************************************************/

#ifndef EDK_SAMPLES_CNPOSTPROC_H_
#define EDK_SAMPLES_CNPOSTPROC_H_

#include <string>
#include <utility>
#include <vector>
#include "cxxutil/exception.h"
#include "easytrack/easy_track.h"

namespace edk {

class CnPostproc {
 public:
  virtual ~CnPostproc() {}

  void set_threshold(const float threshold);
  /*********************************************************
   * @brief post proc
   * @param
   *   net_outputs[in]: net_outputs[index].first is the neuron
   *   network's output. net_outputs[index].second is length.
   *********************************************************/
  std::vector<DetectObject> Execute(const std::vector<std::pair<float*, uint64_t>>& net_outputs);

 protected:
  /*********************************************************
   * @brief called by Execute
   *********************************************************/
  virtual std::vector<DetectObject> Postproc(const std::vector<std::pair<float*, uint64_t>>& net_outputs) = 0;

  float threshold_ = 0;
};  // class CnPostproc

class ClassificationPostproc : public CnPostproc {
 protected:
  std::vector<DetectObject> Postproc(const std::vector<std::pair<float*, uint64_t>>& net_outputs) override;
};  // class ClassificationPostproc

class SsdPostproc : public CnPostproc {
 protected:
  std::vector<DetectObject> Postproc(const std::vector<std::pair<float*, uint64_t>>& net_outputs) override;
};  // class SsdPostproc

class Yolov3Postproc : public CnPostproc {
 public:
  inline void set_padl_ratio(float ratio) { padl_ratio_ = ratio; }
  inline void set_padb_ratio(float ratio) { padb_ratio_ = ratio; }
  inline void set_padr_ratio(float ratio) { padr_ratio_ = ratio; }
  inline void set_padt_ratio(float ratio) { padt_ratio_ = ratio; }
  inline float padl_ratio() const { return padl_ratio_; }
  inline float padb_ratio() const { return padb_ratio_; }
  inline float padr_ratio() const { return padr_ratio_; }
  inline float padt_ratio() const { return padt_ratio_; }

 protected:
  std::vector<DetectObject> Postproc(const std::vector<std::pair<float*, uint64_t>>& net_outputs) override;

 private:
  /*******************************************************************
   * padl_ratio_: left pad / width in preprocessing.
   * padb_ratio_: bottom pad / width in preprocessing.
   * padr_ratio_: right pad / width in preprocrssing.
   * padt_ratio_: top pad / width in preprocessing.
   *******************************************************************/
  float padl_ratio_ = 0, padb_ratio_ = 0, padr_ratio_ = 0, padt_ratio_ = 0;
};  // class Yolov3Postproc

}  // namespace edk

#endif  // EDK_SAMPLES_CNPOSTPROC_H_