37 lines
1.3 KiB
C++
37 lines
1.3 KiB
C++
#pragma once
|
|
#include <base/fixed_string.hpp>
|
|
#include <bit>
|
|
|
|
namespace base {
|
|
|
|
/// Type system magic
|
|
enum class FourCC32_t : u32 {};
|
|
|
|
template <FixedString fccString, std::endian Endian = std::endian::little>
|
|
consteval FourCC32_t FourCC32() {
|
|
static_assert(fccString.Length() == 4, "Provided string is not a FourCC");
|
|
|
|
switch(Endian) {
|
|
case std::endian::little:
|
|
return static_cast<FourCC32_t>((fccString[0]) | (fccString[1] << 8) | (fccString[2] << 16) | (fccString[3] << 24));
|
|
|
|
case std::endian::big:
|
|
return static_cast<FourCC32_t>((fccString[0] << 24) | (fccString[1] << 16) | (fccString[2] << 8) | fccString[3]);
|
|
|
|
// endian::native is practically implemented in most standard libraries
|
|
// by aliasing the native endian enumerator, so that it will match
|
|
// one of the two cases here. therefore this code is literally useless
|
|
// and i have no idea why i even wrote it 4 years ago :')
|
|
// default:
|
|
// throw "Invalid endian provided? How'd you do that?"; // NOLINT
|
|
}
|
|
}
|
|
|
|
inline std::string FourCC32ToString(FourCC32_t fcc) {
|
|
auto* fccAsBytes = std::bit_cast<u8*>(&fcc);
|
|
return std::format("{:c}{:c}{:c}{:c}", fccAsBytes[0], fccAsBytes[1], fccAsBytes[2], fccAsBytes[3]);
|
|
}
|
|
|
|
// TODO: 64-bit version which returns a u64 (if required?)
|
|
|
|
} // namespace base
|