Frundle/cpp-bmp-reader
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Выделил переиспользуемые модули из проекта.

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Евгений Титаренко 2024-04-19 22:25:12 +03:00
parent 3fe2a87e35
commit 7c83d9c93e
15 changed files with 287 additions and 207 deletions
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149
bmpimage.h
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#pragma once
#include <cstdint>
#include <string>
#include <fstream>
#include <array>
#include <functional>
#include "psf.h"
const char PADDING_ZEROES[3] = {0, 0, 0};
const int AVERAGE_MASK[9] = {1, 1, 1, 1, 1, 1, 1, 1, 1};
const int PREWITT_MASK_DX[9] = {-1, 0, 1, -1, 0, 1, -1, 0, 1};
const int PREWITT_MASK_DY[9] = {-1, -1, -1, 0, 0, 0, 1, 1, 1};
const int SOBEL_MASK_DX[9] = {-1, 0, 1, -2, 0, 2, -1, 0, 1};
const int SOBEL_MASK_DY[9] = {-1, -2, -1, 0, 0, 0, 1, 2, 1};
#pragma pack(push, 1)
struct BitmapFileHeader {
char signature[2] = {'B', 'M'};
uint32_t fileSize = 0;
uint16_t reserved1 = 0;
uint16_t reserved2 = 0;
uint32_t imageDataOffset = 54;
};
#pragma pack(pop)
#pragma pack(push, 1)
struct BITMAPINFOHEADER {
uint32_t HeaderSize = 40;
uint32_t BitmapWidth = 0;
uint32_t BitmapHeight = 0;
uint16_t ColorPlanes = 1;
uint16_t BitsPerPixel = 24;
uint32_t CompressionMethod = 0;
uint32_t ImageSize = 0;
int32_t HorizontalPixelPerMetre = 0;
int32_t VerticalPixelPerMetre = 0;
uint32_t NumberOfColors = 0;
uint32_t NumberOfImportantColors = 0;
};
#pragma pack(pop)
#pragma pack(push, 1)
struct Pixel {
uint8_t r = 255;
uint8_t g = 0;
uint8_t b = 255;
};
#pragma pack(pop)
class PixelArray {
Pixel **array;
uint32_t _width;
uint32_t _height;
public:
PixelArray(uint32_t width, uint32_t height);
PixelArray(const PixelArray &);
~PixelArray();
[[nodiscard]] const uint32_t &width() const;
[[nodiscard]] const uint32_t &height() const;
// Pixel operator()(const uint32_t &, const uint32_t &);
// Pixel* operator()(const uint32_t &);
Pixel &operator()(const uint32_t &, const uint32_t &);
Pixel *&operator()(const uint32_t &);
};
class BMPImage {
BitmapFileHeader fileHeader;
BITMAPINFOHEADER infoHeader;
PixelArray pixelArray;
public:
BMPImage(const BitmapFileHeader &fileHeader, const BITMAPINFOHEADER &infoHeader, const PixelArray &pixelArray);
BMPImage(const PixelArray &pixelArray);
~BMPImage();
[[nodiscard]] const uint32_t &width() const;
[[nodiscard]] const uint32_t &height() const;
[[nodiscard]] PixelArray pixels();
[[nodiscard]] PixelArray pixels_copy();
[[nodiscard]] BitmapFileHeader fileHeader_copy();
[[nodiscard]] BITMAPINFOHEADER infoHeader_copy();
void save(const std::string &);
BMPImage appendRight(BMPImage &);
BMPImage overlay(BMPImage &, uint32_t, uint32_t);
BMPImage applyFilter(const std::function<uint8_t (std::array<int,9>&)>& filter);
};
BMPImage readBMPImage(const std::string &filename);
Pixel operator/(const Pixel &, const uint8_t &);
Pixel operator+(const Pixel &, const Pixel &);
Pixel operator*(const Pixel &, const int &);
Pixel operator-(const Pixel &, const uint8_t &);
Pixel operator-(const uint8_t &, const Pixel &);
Pixel operator-(const Pixel &, const Pixel &);
BMPImage grayscale(BMPImage &);
BMPImage invertColors(BMPImage &);
BMPImage upscale2x(BMPImage &);
BMPImage downscale2x(BMPImage &);
BMPImage upscale1_5x(BMPImage &);
BMPImage upscale1_5x_ver2(BMPImage &); // TODO: BAD
BMPImage upscale2x_ver2(BMPImage &); // TODO: BAD
BMPImage textImg(const std::u16string &, Font *font, uint8_t scale = 1, Pixel background_color = Pixel{0, 0, 0},
Pixel font_color = Pixel{255, 255, 255});
uint8_t ui8_clamp(int value, uint8_t min = 0, uint8_t max = 255);
uint8_t medianFilter(std::array<int, 9> &);
uint8_t averageFilter(std::array<int, 9> &);
uint8_t prewittDXFilter(std::array<int, 9> &);
uint8_t prewittDYFilter(std::array<int, 9> &);
uint8_t sobelDXFilter(std::array<int, 9> &);
uint8_t sobelDYFilter(std::array<int, 9> &);