/* sane - Scanner Access Now Easy.

   Copyright (C) 2019 Povilas Kanapickas <povilas@radix.lt>

   This file is part of the SANE package.

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.s
*/

#ifndef BACKEND_GENESYS_IMAGE_H
#define BACKEND_GENESYS_IMAGE_H

#include "image_pixel.h"
#include <vector>

namespace genesys {

class Image
{
public:
    Image();
    Image(std::size_t width, std::size_t height, PixelFormat format);

    std::size_t get_width() const { return width_; }
    std::size_t get_height() const { return height_; }
    PixelFormat get_format() const { return format_; }
    std::size_t get_row_bytes() const { return row_bytes_; }

    std::uint8_t* get_row_ptr(std::size_t y);
    const std::uint8_t* get_row_ptr(std::size_t y) const;

    Pixel get_pixel(std::size_t x, std::size_t y) const;
    void set_pixel(std::size_t x, std::size_t y, const Pixel& pixel);

    RawPixel get_raw_pixel(std::size_t x, std::size_t y) const;
    std::uint16_t get_raw_channel(std::size_t x, std::size_t y, unsigned channel) const;
    void set_raw_pixel(std::size_t x, std::size_t y, const RawPixel& pixel);

    void resize(std::size_t width, std::size_t height, PixelFormat format);
private:
    std::size_t width_ = 0;
    std::size_t height_ = 0;
    PixelFormat format_ = PixelFormat::UNKNOWN;
    std::size_t row_bytes_ = 0;
    std::vector<std::uint8_t> data_;
};

void convert_pixel_row_format(const std::uint8_t* in_data, PixelFormat in_format,
                              std::uint8_t* out_data, PixelFormat out_format, std::size_t count);

void write_tiff_file(const std::string& filename, const void* data, int depth,
                     int channels, int pixels_per_line, int lines);

void write_tiff_file(const std::string& filename, const Image& image);

} // namespace genesys

#endif // ifndef BACKEND_GENESYS_IMAGE_H