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-rw-r--r--src/openvic/utility/BMP.hpp48
1 files changed, 48 insertions, 0 deletions
diff --git a/src/openvic/utility/BMP.hpp b/src/openvic/utility/BMP.hpp
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+++ b/src/openvic/utility/BMP.hpp
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+#pragma once
+
+#include "../Types.hpp"
+
+namespace OpenVic {
+ class BMP {
+#pragma pack(push)
+#pragma pack(1)
+ struct header_t {
+ uint16_t signature; // Signature: 0x4d42 (or 'B' 'M')
+ uint32_t file_size; // File size in bytes
+ uint16_t reserved1; // Not used
+ uint16_t reserved2; // Not used
+ uint32_t offset; // Offset to image data in bytes from beginning of file
+ uint32_t dib_header_size; // DIB header size in bytes
+ int32_t width_px; // Width of the image
+ int32_t height_px; // Height of image
+ uint16_t num_planes; // Number of colour planes
+ uint16_t bits_per_pixel; // Bits per pixel
+ uint32_t compression; // Compression type
+ uint32_t image_size_bytes; // Image size in bytes
+ int32_t x_resolution_ppm; // Pixels per meter
+ int32_t y_resolution_ppm; // Pixels per meter
+ uint32_t num_colours; // Number of colours
+ uint32_t important_colours; // Important colours
+ } header;
+#pragma pack(pop)
+
+ FILE* file = nullptr;
+ bool header_validated = false;
+ uint32_t palette_size = 0;
+ std::vector<colour_t> palette;
+
+ public:
+ static constexpr uint32_t PALETTE_COLOUR_SIZE = sizeof(colour_t);
+
+ BMP() = default;
+ ~BMP();
+
+ return_t open(char const* filepath);
+ return_t read_header();
+ return_t read_palette();
+ void close();
+ void reset();
+
+ std::vector<colour_t> const& get_palette() const;
+ };
+}