// Copyright (c) 2022, ETH Zurich and UNC Chapel Hill.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//
//     * Neither the name of ETH Zurich and UNC Chapel Hill nor the names of
//       its contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
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// Author: Johannes L. Schoenberger (jsch-at-demuc-dot-de)

#ifndef COLMAP_SRC_MVS_DEPTH_MAP_H_
#define COLMAP_SRC_MVS_DEPTH_MAP_H_

#include <string>
#include <vector>

#include "mvs/mat.h"
#include "util/bitmap.h"

namespace colmap {
namespace mvs {

class DepthMap : public Mat<float> {
 public:
  DepthMap();
  DepthMap(const size_t width, const size_t height, const float depth_min,
           const float depth_max);
  DepthMap(const Mat<float>& mat, const float depth_min, const float depth_max);

  inline float GetDepthMin() const;
  inline float GetDepthMax() const;

  inline float Get(const size_t row, const size_t col) const;

  void Rescale(const float factor);
  void Downsize(const size_t max_width, const size_t max_height);

  Bitmap ToBitmap(const float min_percentile, const float max_percentile) const;

 private:
  float depth_min_ = -1.0f;
  float depth_max_ = -1.0f;
};

////////////////////////////////////////////////////////////////////////////////
// Implementation
////////////////////////////////////////////////////////////////////////////////

float DepthMap::GetDepthMin() const { return depth_min_; }

float DepthMap::GetDepthMax() const { return depth_max_; }

float DepthMap::Get(const size_t row, const size_t col) const {
  return data_.at(row * width_ + col);
}

}  // namespace mvs
}  // namespace colmap

#endif  // COLMAP_SRC_MVS_DEPTH_MAP_H_