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/*************************************************************************/
/* typedefs.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 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. */
/*************************************************************************/
#ifndef TYPEDEFS_H
#define TYPEDEFS_H
#include <stddef.h>
/**
* Basic definitions and simple functions to be used everywhere.
*/
#include "platform_config.h"
#ifndef _STR
#define _STR(m_x) #m_x
#define _MKSTR(m_x) _STR(m_x)
#endif
//should always inline no matter what
#ifndef _ALWAYS_INLINE_
#if defined(__GNUC__) && (__GNUC__ >= 4)
#define _ALWAYS_INLINE_ __attribute__((always_inline)) inline
#elif defined(__llvm__)
#define _ALWAYS_INLINE_ __attribute__((always_inline)) inline
#elif defined(_MSC_VER)
#define _ALWAYS_INLINE_ __forceinline
#else
#define _ALWAYS_INLINE_ inline
#endif
#endif
//should always inline, except in some cases because it makes debugging harder
#ifndef _FORCE_INLINE_
#ifdef DISABLE_FORCED_INLINE
#define _FORCE_INLINE_ inline
#else
#define _FORCE_INLINE_ _ALWAYS_INLINE_
#endif
#endif
//custom, gcc-safe offsetof, because gcc complains a lot.
template <class T>
T *_nullptr() {
T *t = NULL;
return t;
}
#define OFFSET_OF(st, m) \
((size_t)((char *)&(_nullptr<st>()->m) - (char *)0))
/**
* Some platforms (devices) don't define NULL
*/
#ifndef NULL
#define NULL 0
#endif
/**
* Windows badly defines a lot of stuff we'll never use. Undefine it.
*/
#ifdef _WIN32
#undef min // override standard definition
#undef max // override standard definition
#undef ERROR // override (really stupid) wingdi.h standard definition
#undef DELETE // override (another really stupid) winnt.h standard definition
#undef MessageBox // override winuser.h standard definition
#undef MIN // override standard definition
#undef MAX // override standard definition
#undef CLAMP // override standard definition
#undef Error
#undef OK
#undef CONNECT_DEFERRED // override from Windows SDK, clashes with Object enum
#endif
#include "core/int_types.h"
#include "core/error_list.h"
#include "core/error_macros.h"
/** Generic ABS function, for math uses please use Math::abs */
#ifndef ABS
#define ABS(m_v) (((m_v) < 0) ? (-(m_v)) : (m_v))
#endif
#define ABSDIFF(x, y) (((x) < (y)) ? ((y) - (x)) : ((x) - (y)))
#ifndef SGN
#define SGN(m_v) (((m_v) < 0) ? (-1.0) : (+1.0))
#endif
#ifndef MIN
#define MIN(m_a, m_b) (((m_a) < (m_b)) ? (m_a) : (m_b))
#endif
#ifndef MAX
#define MAX(m_a, m_b) (((m_a) > (m_b)) ? (m_a) : (m_b))
#endif
#ifndef CLAMP
#define CLAMP(m_a, m_min, m_max) (((m_a) < (m_min)) ? (m_min) : (((m_a) > (m_max)) ? m_max : m_a))
#endif
/** Generic swap template */
#ifndef SWAP
#define SWAP(m_x, m_y) __swap_tmpl((m_x), (m_y))
template <class T>
inline void __swap_tmpl(T &x, T &y) {
T aux = x;
x = y;
y = aux;
}
#endif //swap
/* clang-format off */
#define HEX2CHR(m_hex) \
((m_hex >= '0' && m_hex <= '9') ? (m_hex - '0') : \
((m_hex >= 'A' && m_hex <= 'F') ? (10 + m_hex - 'A') : \
((m_hex >= 'a' && m_hex <= 'f') ? (10 + m_hex - 'a') : 0)))
/* clang-format on */
// Macro to check whether we are compiled by clang
// and we have a specific builtin
#if defined(__llvm__) && defined(__has_builtin)
#define _llvm_has_builtin(x) __has_builtin(x)
#else
#define _llvm_has_builtin(x) 0
#endif
#if (defined(__GNUC__) && (__GNUC__ >= 5)) || _llvm_has_builtin(__builtin_mul_overflow)
#define _mul_overflow __builtin_mul_overflow
#endif
#if (defined(__GNUC__) && (__GNUC__ >= 5)) || _llvm_has_builtin(__builtin_add_overflow)
#define _add_overflow __builtin_add_overflow
#endif
/** Function to find the next power of 2 to an integer */
static _FORCE_INLINE_ unsigned int next_power_of_2(unsigned int x) {
--x;
x |= x >> 1;
x |= x >> 2;
x |= x >> 4;
x |= x >> 8;
x |= x >> 16;
return ++x;
}
static _FORCE_INLINE_ unsigned int previous_power_of_2(unsigned int x) {
x |= x >> 1;
x |= x >> 2;
x |= x >> 4;
x |= x >> 8;
x |= x >> 16;
return x - (x >> 1);
}
static _FORCE_INLINE_ unsigned int closest_power_of_2(unsigned int x) {
unsigned int nx = next_power_of_2(x);
unsigned int px = previous_power_of_2(x);
return (nx - x) > (x - px) ? px : nx;
}
// We need this definition inside the function below.
static inline int get_shift_from_power_of_2(unsigned int p_pixel);
template <class T>
static _FORCE_INLINE_ T nearest_power_of_2_templated(T x) {
--x;
// The number of operations on x is the base two logarithm
// of the p_number of bits in the type. Add three to account
// for sizeof(T) being in bytes.
size_t num = get_shift_from_power_of_2(sizeof(T)) + 3;
// If the compiler is smart, it unrolls this loop
// If its dumb, this is a bit slow.
for (size_t i = 0; i < num; i++)
x |= x >> (1 << i);
return ++x;
}
/** Function to find the nearest (bigger) power of 2 to an integer */
static inline unsigned int nearest_shift(unsigned int p_number) {
for (int i = 30; i >= 0; i--) {
if (p_number & (1 << i))
return i + 1;
}
return 0;
}
/** get a shift value from a power of 2 */
static inline int get_shift_from_power_of_2(unsigned int p_pixel) {
// return a GL_TEXTURE_SIZE_ENUM
for (unsigned int i = 0; i < 32; i++) {
if (p_pixel == (unsigned int)(1 << i))
return i;
}
return -1;
}
/** Swap 16 bits value for endianness */
#if defined(__GNUC__) || _llvm_has_builtin(__builtin_bswap16)
#define BSWAP16(x) __builtin_bswap16(x)
#else
static inline uint16_t BSWAP16(uint16_t x) {
return (x >> 8) | (x << 8);
}
#endif
/** Swap 32 bits value for endianness */
#if defined(__GNUC__) || _llvm_has_builtin(__builtin_bswap32)
#define BSWAP32(x) __builtin_bswap32(x)
#else
static inline uint32_t BSWAP32(uint32_t x) {
return ((x << 24) | ((x << 8) & 0x00FF0000) | ((x >> 8) & 0x0000FF00) | (x >> 24));
}
#endif
/** Swap 64 bits value for endianness */
#if defined(__GNUC__) || _llvm_has_builtin(__builtin_bswap64)
#define BSWAP64(x) __builtin_bswap64(x)
#else
static inline uint64_t BSWAP64(uint64_t x) {
x = (x & 0x00000000FFFFFFFF) << 32 | (x & 0xFFFFFFFF00000000) >> 32;
x = (x & 0x0000FFFF0000FFFF) << 16 | (x & 0xFFFF0000FFFF0000) >> 16;
x = (x & 0x00FF00FF00FF00FF) << 8 | (x & 0xFF00FF00FF00FF00) >> 8;
return x;
}
#endif
/** When compiling with RTTI, we can add an "extra"
* layer of safeness in many operations, so dynamic_cast
* is used besides casting by enum.
*/
template <class T>
struct Comparator {
_ALWAYS_INLINE_ bool operator()(const T &p_a, const T &p_b) const { return (p_a < p_b); }
};
void _global_lock();
void _global_unlock();
struct _GlobalLock {
_GlobalLock() { _global_lock(); }
~_GlobalLock() { _global_unlock(); }
};
#define GLOBAL_LOCK_FUNCTION _GlobalLock _global_lock_;
#ifdef NO_SAFE_CAST
#define SAFE_CAST static_cast
#else
#define SAFE_CAST dynamic_cast
#endif
#define MT_SAFE
#define __STRX(m_index) #m_index
#define __STR(m_index) __STRX(m_index)
#ifdef __GNUC__
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#else
#define likely(x) x
#define unlikely(x) x
#endif
#if defined(__GNUC__)
#define _PRINTF_FORMAT_ATTRIBUTE_2_0 __attribute__((format(printf, 2, 0)))
#define _PRINTF_FORMAT_ATTRIBUTE_2_3 __attribute__((format(printf, 2, 3)))
#else
#define _PRINTF_FORMAT_ATTRIBUTE_2_0
#define _PRINTF_FORMAT_ATTRIBUTE_2_3
#endif
#endif // TYPEDEFS_H
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