// This file is part of the AliceVision project.

// Copyright (c) 2015 AliceVision contributors.

// This Source Code Form is subject to the terms of the Mozilla Public License,

// v. 2.0. If a copy of the MPL was not distributed with this file,

// You can obtain one at https://mozilla.org/MPL/2.0/.

#include "IFeed.hpp"

#include <aliceVision/system/Logger.hpp>

#include <fstream>

#include <exception>

namespace aliceVision{

namespace dataio{

// the structure of the file is

// int #image width

// int #image height

// double #focal

// double #ppx principal point x-coord

// double #ppy principal point y-coord

// double #k0

// double #k1

// double #k2

void readCalibrationFromFile(const std::string &filename, camera::PinholeRadialK3 &camIntrinsics)

{

std::ifstream fs(filename, std::ios::in);

if(!fs.is_open())

{

ALICEVISION_LOG_WARNING("Unable to open the calibration file " << filename);

throw std::invalid_argument("Unable to open the calibration file "+filename);

}

int width = 0;

int height = 0;

const size_t numParam = 6;

std::vector<double> params(numParam, 0);

fs >> width;

fs >> height;

for(size_t i = 0; i < numParam; ++i)

{

fs >> params[i];

}

camIntrinsics = camera::PinholeRadialK3(width, height,

params[0], params[1], params[2],

params[3], params[4], params[5]);

fs.close();

}

}//namespace dataio

}//namespace aliceVision