40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
//
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// EuropaTools
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//
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// (C) 2021-2025 modeco80 <lily.modeco80@protonmail.ch>
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//
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// SPDX-License-Identifier: MIT
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//
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#ifndef EUROPA_FOURCC_H
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#define EUROPA_FOURCC_H
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#include <bit>
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#include <europa/util/FixedString.hpp>
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namespace europa::util {
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/// Compile-time endian-safe FourCC.
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template <FixedString fccString, std::endian Endian = std::endian::little>
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consteval std::uint32_t FourCC() {
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// FIXME: It may be useful to *optionally* add policy support
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// some FourCC clients prefer '\0' padding, some prefer ' ' (0x20) padding
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// Idk. Pretty useless here though so idk
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static_assert(fccString.Length() == 4, "Provided string is not a FourCC");
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switch(Endian) {
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case std::endian::little:
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return (fccString[0]) | (fccString[1] << 8) | (fccString[2] << 16) | (fccString[3] << 24);
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case std::endian::big:
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return (fccString[0] << 24) | (fccString[1] << 16) | (fccString[2] << 8) | fccString[3];
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}
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// If the user provided an invalid case, do something which is
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// constexpr-unsafe to indicate user error.
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throw 0xffffffff; // You passed an invalid Endian to FourCC()?
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}
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} // namespace europa::util
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#endif // EUROPA_FOURCC_H
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