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54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
3 months ago
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#pragma once
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#include <vector>
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#include <string>
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#include <cstdint>
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#include <fstream>
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#include <stdexcept>
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#pragma pack(push, 1)
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struct BmpHeader {
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uint16_t signature; // 'BM'
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uint32_t fileSize; // Size of the BMP file
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uint16_t reserved1; // Reserved
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uint16_t reserved2; // Reserved
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uint32_t dataOffset; // Offset to the start of image data
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};
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struct BmpInfoHeader {
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uint32_t headerSize; // Size of the info header
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int32_t width; // Width of the image
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int32_t height; // Height of the image
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uint16_t planes; // Number of color planes
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uint16_t bitsPerPixel; // Bits per pixel
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uint32_t compression; // Compression type
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uint32_t imageSize; // Image size in bytes
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int32_t xPixelsPerMeter; // X resolution
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int32_t yPixelsPerMeter; // Y resolution
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uint32_t colorsUsed; // Number of colors used
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uint32_t colorsImportant;// Number of important colors
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};
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#pragma pack(pop)
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struct BmpInfo {
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int32_t width;
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int32_t height;
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int32_t bitsPerPixel;
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uint32_t dataOffset;
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int32_t rowPadding;
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int32_t rowSize;
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};
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class BmpLoader {
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public:
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static BmpInfo readBmpInfo(const std::string& filePath);
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static std::vector<uint8_t> readBmpRegion(
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const std::string& filePath,
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const BmpInfo& info,
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int32_t startX, int32_t startY,
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int32_t width, int32_t height);
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static std::vector<float> readBmpRegionAsFloat(
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const std::string& filePath,
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const BmpInfo& info,
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int32_t startX, int32_t startY,
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int32_t width, int32_t height);
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};
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