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https://github.com/libretro/devilutionX.git
synced 2026-11-10 17:20:56 -10:00
55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
#pragma once
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#include <cstdint>
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#include <cstring>
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#include <SDL_endian.h>
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namespace devilution {
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template <typename T>
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constexpr uint16_t LoadLE16(const T *b)
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{
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static_assert(sizeof(T) == 1, "invalid argument");
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// NOLINTNEXTLINE(readability-magic-numbers)
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return (static_cast<uint8_t>(b[1]) << 8) | static_cast<uint8_t>(b[0]);
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}
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template <typename T>
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constexpr uint16_t LoadBE16(const T *b)
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{
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static_assert(sizeof(T) == 1, "invalid argument");
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// NOLINTNEXTLINE(readability-magic-numbers)
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return (static_cast<uint8_t>(b[0]) << 8) | static_cast<uint8_t>(b[1]);
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}
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template <typename T>
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constexpr uint32_t LoadLE32(const T *b)
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{
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static_assert(sizeof(T) == 1, "invalid argument");
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// NOLINTNEXTLINE(readability-magic-numbers)
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return (static_cast<uint8_t>(b[3]) << 24) | (static_cast<uint8_t>(b[2]) << 16) | (static_cast<uint8_t>(b[1]) << 8) | static_cast<uint8_t>(b[0]);
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}
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template <typename T>
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constexpr uint32_t LoadBE32(const T *b)
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{
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static_assert(sizeof(T) == 1, "invalid argument");
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// NOLINTNEXTLINE(readability-magic-numbers)
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return (static_cast<uint8_t>(b[0]) << 24) | (static_cast<uint8_t>(b[1]) << 16) | (static_cast<uint8_t>(b[2]) << 8) | static_cast<uint8_t>(b[3]);
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}
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inline void WriteLE16(void *out, uint16_t val)
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{
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const uint16_t littleEndian = SDL_SwapLE16(val);
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memcpy(out, &littleEndian, 2);
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}
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inline void WriteLE32(void *out, uint32_t val)
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{
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const uint32_t littleEndian = SDL_SwapLE32(val);
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memcpy(out, &littleEndian, 4);
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}
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} // namespace devilution
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