mirror of
https://github.com/godotengine/godot.git
synced 2024-12-21 10:25:24 +08:00
3564c16cb8
Found via `codespell -q 3 -S ./thirdparty,*.po,./DONORS.md -L ackward,ang,ans,ba,beng,cas,childs,childrens,dof,doubleclick,fave,findn,hist,inout,leapyear,lod,nd,numer,ois,ony,paket,seeked,sinc,switchs,te,uint`
284 lines
9.6 KiB
C++
284 lines
9.6 KiB
C++
/*************************************************************************/
|
|
/* 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
|