BMPFile.hpp

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//
// Created by root on 2/12/25.
//
 
#pragma once
#include <stdint-gcc.h>
 
class BMPFile
{
   public:
    BMPFile(uint8_t* data, uint32_t sz);
    bool has_color_table() const;
    const uint32_t* get_raster() const;
 
    uint32_t get_pixel(uint32_t x, uint32_t y) const;
    uint32_t get_width() const;
    uint32_t get_height() const;
 
   private:
    struct BITMAPFILEHEADER
    {
        char signature[2];
        uint32_t file_size;
        uint32_t reserved;
        uint32_t offset;
    } __attribute__((__packed__));
    struct BITMAPINFOHEADER
    {
        uint32_t size;
        uint32_t width;
        uint32_t height;
        uint16_t planes;
        uint16_t bit_count;
        uint32_t compression;
        uint32_t image_size;
        uint32_t x_pixels_per_meter;
        uint32_t y_pixels_per_meter;
        uint32_t colors_used;
        uint32_t colors_important;
    } __attribute__((__packed__));
 
    const BITMAPFILEHEADER* m_file_header;
    const BITMAPINFOHEADER* m_info_header;
    const uint32_t* m_color_table;
    const uint32_t* m_raster_data;
};