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-/*************************************************************************/
-/* ByteSwapper.h */
-/*************************************************************************/
-/* This file is part of: */
-/* GODOT ENGINE */
-/* https://godotengine.org */
-/*************************************************************************/
-/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
-/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
-/* */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the */
-/* "Software"), to deal in the Software without restriction, including */
-/* without limitation the rights to use, copy, modify, merge, publish, */
-/* distribute, sublicense, and/or sell copies of the Software, and to */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions: */
-/* */
-/* The above copyright notice and this permission notice shall be */
-/* included in all copies or substantial portions of the Software. */
-/* */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
-/*************************************************************************/
-
-/*
-Open Asset Import Library (assimp)
-----------------------------------------------------------------------
-
-Copyright (c) 2006-2020, assimp team
-
-
-All rights reserved.
-
-Redistribution and use of this software in source and binary forms,
-with or without modification, are permitted provided that the
-following conditions are met:
-
-* Redistributions of source code must retain the above
- copyright notice, this list of conditions and the
- following disclaimer.
-
-* Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the
- following disclaimer in the documentation and/or other
- materials provided with the distribution.
-
-* Neither the name of the assimp team, nor the names of its
- contributors may be used to endorse or promote products
- derived from this software without specific prior
- written permission of the assimp team.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-----------------------------------------------------------------------
-*/
-
-/** @file Helper class tp perform various byte order swappings
- (e.g. little to big endian) */
-#ifndef BYTE_SWAPPER_H
-#define BYTE_SWAPPER_H
-
-#include <stdint.h>
-#include <algorithm>
-#include <locale>
-
-namespace FBXDocParser {
-// --------------------------------------------------------------------------------------
-/** Defines some useful byte order swap routines.
- *
- * This is required to read big-endian model formats on little-endian machines,
- * and vice versa. Direct use of this class is DEPRECATED. Use #StreamReader instead. */
-// --------------------------------------------------------------------------------------
-class ByteSwap {
- ByteSwap() {}
-
-public:
- // ----------------------------------------------------------------------
- /** Swap two bytes of data
- * @param[inout] _szOut A void* to save the reintcasts for the caller. */
- static inline void Swap2(void *_szOut) {
- uint8_t *const szOut = reinterpret_cast<uint8_t *>(_szOut);
- std::swap(szOut[0], szOut[1]);
- }
-
- // ----------------------------------------------------------------------
- /** Swap four bytes of data
- * @param[inout] _szOut A void* to save the reintcasts for the caller. */
- static inline void Swap4(void *_szOut) {
- uint8_t *const szOut = reinterpret_cast<uint8_t *>(_szOut);
- std::swap(szOut[0], szOut[3]);
- std::swap(szOut[1], szOut[2]);
- }
-
- // ----------------------------------------------------------------------
- /** Swap eight bytes of data
- * @param[inout] _szOut A void* to save the reintcasts for the caller. */
- static inline void Swap8(void *_szOut) {
- uint8_t *const szOut = reinterpret_cast<uint8_t *>(_szOut);
- std::swap(szOut[0], szOut[7]);
- std::swap(szOut[1], szOut[6]);
- std::swap(szOut[2], szOut[5]);
- std::swap(szOut[3], szOut[4]);
- }
-
- // ----------------------------------------------------------------------
- /** ByteSwap a float. Not a joke.
- * @param[inout] fOut ehm. .. */
- static inline void Swap(float *fOut) {
- Swap4(fOut);
- }
-
- // ----------------------------------------------------------------------
- /** ByteSwap a double. Not a joke.
- * @param[inout] fOut ehm. .. */
- static inline void Swap(double *fOut) {
- Swap8(fOut);
- }
-
- // ----------------------------------------------------------------------
- /** ByteSwap an int16t. Not a joke.
- * @param[inout] fOut ehm. .. */
- static inline void Swap(int16_t *fOut) {
- Swap2(fOut);
- }
-
- static inline void Swap(uint16_t *fOut) {
- Swap2(fOut);
- }
-
- // ----------------------------------------------------------------------
- /** ByteSwap an int32t. Not a joke.
- * @param[inout] fOut ehm. .. */
- static inline void Swap(int32_t *fOut) {
- Swap4(fOut);
- }
-
- static inline void Swap(uint32_t *fOut) {
- Swap4(fOut);
- }
-
- // ----------------------------------------------------------------------
- /** ByteSwap an int64t. Not a joke.
- * @param[inout] fOut ehm. .. */
- static inline void Swap(int64_t *fOut) {
- Swap8(fOut);
- }
-
- static inline void Swap(uint64_t *fOut) {
- Swap8(fOut);
- }
-
- // ----------------------------------------------------------------------
- //! Templatized ByteSwap
- //! \returns param tOut as swapped
- template <typename Type>
- static inline Type Swapped(Type tOut) {
- return _swapper<Type, sizeof(Type)>()(tOut);
- }
-
-private:
- template <typename T, size_t size>
- struct _swapper;
-};
-
-template <typename T>
-struct ByteSwap::_swapper<T, 2> {
- T operator()(T tOut) {
- Swap2(&tOut);
- return tOut;
- }
-};
-
-template <typename T>
-struct ByteSwap::_swapper<T, 4> {
- T operator()(T tOut) {
- Swap4(&tOut);
- return tOut;
- }
-};
-
-template <typename T>
-struct ByteSwap::_swapper<T, 8> {
- T operator()(T tOut) {
- Swap8(&tOut);
- return tOut;
- }
-};
-
-// --------------------------------------------------------------------------------------
-// ByteSwap macros for BigEndian/LittleEndian support
-// --------------------------------------------------------------------------------------
-#if (defined AI_BUILD_BIG_ENDIAN)
-#define AI_LE(t) (t)
-#define AI_BE(t) ByteSwap::Swapped(t)
-#define AI_LSWAP2(p)
-#define AI_LSWAP4(p)
-#define AI_LSWAP8(p)
-#define AI_LSWAP2P(p)
-#define AI_LSWAP4P(p)
-#define AI_LSWAP8P(p)
-#define LE_NCONST const
-#define AI_SWAP2(p) ByteSwap::Swap2(&(p))
-#define AI_SWAP4(p) ByteSwap::Swap4(&(p))
-#define AI_SWAP8(p) ByteSwap::Swap8(&(p))
-#define AI_SWAP2P(p) ByteSwap::Swap2((p))
-#define AI_SWAP4P(p) ByteSwap::Swap4((p))
-#define AI_SWAP8P(p) ByteSwap::Swap8((p))
-#define BE_NCONST
-#else
-#define AI_BE(t) (t)
-#define AI_LE(t) ByteSwap::Swapped(t)
-#define AI_SWAP2(p)
-#define AI_SWAP4(p)
-#define AI_SWAP8(p)
-#define AI_SWAP2P(p)
-#define AI_SWAP4P(p)
-#define AI_SWAP8P(p)
-#define BE_NCONST const
-#define AI_LSWAP2(p) ByteSwap::Swap2(&(p))
-#define AI_LSWAP4(p) ByteSwap::Swap4(&(p))
-#define AI_LSWAP8(p) ByteSwap::Swap8(&(p))
-#define AI_LSWAP2P(p) ByteSwap::Swap2((p))
-#define AI_LSWAP4P(p) ByteSwap::Swap4((p))
-#define AI_LSWAP8P(p) ByteSwap::Swap8((p))
-#define LE_NCONST
-#endif
-
-namespace Intern {
-
-// --------------------------------------------------------------------------------------------
-template <typename T, bool doit>
-struct ByteSwapper {
- void operator()(T *inout) {
- ByteSwap::Swap(inout);
- }
-};
-
-template <typename T>
-struct ByteSwapper<T, false> {
- void operator()(T *) {
- }
-};
-
-// --------------------------------------------------------------------------------------------
-template <bool SwapEndianess, typename T, bool RuntimeSwitch>
-struct Getter {
- void operator()(T *inout, bool le) {
- le = !le;
- if (le) {
- ByteSwapper<T, (sizeof(T) > 1 ? true : false)>()(inout);
- } else {
- ByteSwapper<T, false>()(inout);
- }
- }
-};
-
-template <bool SwapEndianess, typename T>
-struct Getter<SwapEndianess, T, false> {
- void operator()(T *inout, bool /*le*/) {
- // static branch
- ByteSwapper<T, (SwapEndianess && sizeof(T) > 1)>()(inout);
- }
-};
-} // namespace Intern
-} // namespace FBXDocParser
-
-#endif // BYTE_SWAPPER_H
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-14 05:45:50 +0000