Frundle/cpp-bmp-reader
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Попытка сделать что-то полезное

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Евгений Титаренко 2024-04-04 17:20:38 +03:00
parent 9762c44796
commit a1e42a0c28
4 changed files with 397 additions and 49 deletions
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67
bmpimage.h
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@ -8,21 +8,21 @@ const char PADDING_ZEROES[3] = {0, 0, 0};
#pragma pack(push, 1)
struct BitmapFileHeader {
char signature[2] = {0, 0};
char signature[2] = {'B', 'M'};
uint32_t fileSize = 0;
uint16_t reserved1 = 0;
uint16_t reserved2 = 0;
uint32_t imageDataOffset = 0;
uint32_t imageDataOffset = 54;
};
#pragma pack(pop)
#pragma pack(push, 1)
struct BITMAPINFOHEADER {
uint32_t HeaderSize = 0;
uint32_t HeaderSize = 40;
uint32_t BitmapWidth = 0;
uint32_t BitmapHeight = 0;
uint16_t ColorPlanes = 0;
uint16_t BitsPerPixel = 0;
uint16_t ColorPlanes = 1;
uint16_t BitsPerPixel = 24;
uint32_t CompressionMethod = 0;
uint32_t ImageSize = 0;
int32_t HorizontalPixelPerMetre = 0;
@ -34,18 +34,39 @@ struct BITMAPINFOHEADER {
#pragma pack(push, 1)
struct Pixel {
uint8_t r = 0;
uint8_t r = 255;
uint8_t g = 0;
uint8_t b = 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;
Pixel **pixelArray;
PixelArray pixelArray;
public:
BMPImage(const BitmapFileHeader &fileHeader, const BITMAPINFOHEADER &infoHeader, Pixel **pixelArray);
BMPImage(const BitmapFileHeader &fileHeader, const BITMAPINFOHEADER &infoHeader, PixelArray pixelArray);
BMPImage(PixelArray pixelArray);
~BMPImage();
@ -53,7 +74,7 @@ public:
[[nodiscard]] const uint32_t &height() const;
[[nodiscard]] Pixel **pixels();
[[nodiscard]] const PixelArray pixels();
[[nodiscard]] Pixel **pixels_copy();
@ -61,7 +82,31 @@ public:
[[nodiscard]] BITMAPINFOHEADER infoHeader_copy();
void write(const std::string &);
void save(const std::string &);
BMPImage *appendRight(const BMPImage &);
};
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 &);
BMPImage grayscale(BMPImage &);
BMPImage invertColors(BMPImage &);
BMPImage upscale2x(BMPImage &);
BMPImage downscale2x(BMPImage &);
BMPImage upscale1_5x(BMPImage &);
uint8_t ui8_clamp(int value, uint8_t min = 0, uint8_t max = 255);