mirror of
https://github.com/patchzyy/wiicompiled
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patchzyy
92 lines
2.6 KiB
C++
92 lines
2.6 KiB
C++
#pragma once
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#include <cstddef>
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#include <cstdint>
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#include <cstring>
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#include <type_traits>
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namespace BigEndian {
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inline uint16_t Read16(const uint8_t* src) {
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return (static_cast<uint16_t>(src[0]) << 8) |
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static_cast<uint16_t>(src[1]);
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}
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inline uint32_t Read32(const uint8_t* src) {
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return (static_cast<uint32_t>(src[0]) << 24) |
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(static_cast<uint32_t>(src[1]) << 16) |
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(static_cast<uint32_t>(src[2]) << 8) |
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static_cast<uint32_t>(src[3]);
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}
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inline float ReadFloat32(const uint8_t* src) {
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const uint32_t bits = Read32(src);
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float value = 0.0f;
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static_assert(sizeof(bits) == sizeof(value));
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std::memcpy(&value, &bits, sizeof(value));
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return value;
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}
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inline void Write16(uint8_t* dst, uint16_t value) {
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dst[0] = static_cast<uint8_t>(value >> 8);
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dst[1] = static_cast<uint8_t>(value);
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}
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inline void Write32(uint8_t* dst, uint32_t value) {
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dst[0] = static_cast<uint8_t>(value >> 24);
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dst[1] = static_cast<uint8_t>(value >> 16);
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dst[2] = static_cast<uint8_t>(value >> 8);
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dst[3] = static_cast<uint8_t>(value);
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}
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inline void Write64(uint8_t* dst, uint64_t value) {
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Write32(dst, static_cast<uint32_t>(value >> 32));
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Write32(dst + sizeof(uint32_t), static_cast<uint32_t>(value));
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}
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inline void WriteFloat32(uint8_t* dst, float value) {
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uint32_t bits = 0;
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static_assert(sizeof(bits) == sizeof(value));
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std::memcpy(&bits, &value, sizeof(bits));
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Write32(dst, bits);
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}
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inline void Write16(uint8_t* dst, std::size_t offset, uint16_t value) {
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Write16(dst + offset, value);
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}
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inline void Write32(uint8_t* dst, std::size_t offset, uint32_t value) {
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Write32(dst + offset, value);
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}
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inline void Write64(uint8_t* dst, std::size_t offset, uint64_t value) {
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Write64(dst + offset, value);
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}
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inline void WriteFloat32(uint8_t* dst, std::size_t offset, float value) {
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WriteFloat32(dst + offset, value);
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}
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template <typename Offset>
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inline void Append16(uint8_t* dst, Offset& offset, uint16_t value) {
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static_assert(std::is_integral_v<Offset>);
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Write16(dst + offset, value);
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offset += static_cast<Offset>(sizeof(value));
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}
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template <typename Offset>
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inline void Append32(uint8_t* dst, Offset& offset, uint32_t value) {
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static_assert(std::is_integral_v<Offset>);
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Write32(dst + offset, value);
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offset += static_cast<Offset>(sizeof(value));
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}
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template <typename Offset>
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inline void AppendFloat32(uint8_t* dst, Offset& offset, float value) {
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static_assert(std::is_integral_v<Offset>);
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WriteFloat32(dst + offset, value);
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offset += static_cast<Offset>(sizeof(value));
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}
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} // namespace BigEndian
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