fourcc.hpp

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#pragma once

 
#include <array>
#include <cstdint>
#include <string>
 
namespace wowlib::formats {
  enum class FourCCEndian : std::uint8_t {
    Reversed,

    Forward
  };

  constexpr std::uint32_t fourcc(const char (&cc)[5], FourCCEndian endian = FourCCEndian::Reversed) {
    const auto b = [&](std::size_t i) {
      return static_cast<std::uint32_t>(cc[i]);
    };
    return endian == FourCCEndian::Reversed
             ? b(3) | b(2) << 8 | b(1) << 16 | b(0) << 24
             : b(0) | b(1) << 8 | b(2) << 16 | b(3) << 24;
  }

  constexpr std::string fourccToString(std::uint32_t fourcc, FourCCEndian endian = FourCCEndian::Reversed) {
    const auto b = [&](unsigned shift) {
      return static_cast<char>((fourcc >> shift) & 0xFF);
    };
    return endian == FourCCEndian::Reversed
             ? std::string{b(24), b(16), b(8), b(0)}
             : std::string{b(0), b(8), b(16), b(24)};
  }
}