image_file_hdr.hpp

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#ifndef OGLPLUS_UTILS_IMAGE_FILE_HDR_HPP
#define OGLPLUS_UTILS_IMAGE_FILE_HDR_HPP
 
#include "../gl_api/enum_types.hpp"
#include <eagine/file_magic_number.hpp>
#include <eagine/memory/offset_span.hpp>
#include <eagine/valid_if/positive.hpp>
#include <array>
 
namespace eagine::oglp {
 
struct image_data_header {
    file_magic_number<'o', 'g', 'l', '+', 't', 'e', 'x', 'i'> magic;
    gl_types::sizei_type width{0}, height{0}, depth{0}, channels{0};
    gl_types::enum_type format{0}, internal_format{0};
    gl_types::enum_type data_type{0};
 
    memory::offset_span<const gl_types::ubyte_type> pixels{};
 
    constexpr image_data_header() noexcept = default;
 
    image_data_header(
      valid_if_positive<gl_types::sizei_type> w,
      valid_if_positive<gl_types::sizei_type> h,
      valid_if_positive<gl_types::sizei_type> d,
      valid_if_positive<gl_types::sizei_type> c) noexcept
      : width(w.value())
      , height(h.value())
      , depth(d.value())
      , channels(c.value()) {}
};
 
} // namespace eagine::oglp
 
#endif // OGLPLUS_UTILS_IMAGE_FILE_HDR_HPP