models/common.h

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/* This file is part of LibT2FS.
 *
 * LibT2FS is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * LibT2FS is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
 
#ifndef H_T2FS_DATA_COMMON
#define H_T2FS_DATA_COMMON
 
#include <stdint.h>
 
#ifdef T2FS_DEBUG
#define SASSERT_SIZE(what, size) \
  _Static_assert((sizeof(what) == size), "" #what " expected to be " #size " in size");
#else
#define SASSERT_SIZE(what, size)
#endif
 
 
// Some helpers for endianess swapping structures
#define T2FS_STRINGIFY(x) #x
#define T2FS_CONCAT(a, b) a##b
#define T2FS_GET_SWAP_STRUCT(name) T2FS_CONCAT(T2FS_SWAP_, name)
 
#define T2FS_SWAP_STRUCT_ARGS(...) __VA_ARGS__
#define T2FS_CREATE_SWAP_STRUCT(name, sizes) \
  const static uint8_t T2FS_GET_SWAP_STRUCT(name)[] = {T2FS_SWAP_STRUCT_ARGS sizes}; \
  SASSERT_SIZE(name, T2FS_ADD_CONST_ARRAY_NUMBERS(T2FS_SWAP_STRUCT_ARGS sizes))
 
#define T2FS_SWAP_STRUCT_COUNT(name) \
  sizeof(T2FS_GET_SWAP_STRUCT(name)) / sizeof(T2FS_GET_SWAP_STRUCT(name)[0])
 
#include "models/assert.h"
 
#define _T2FS_ADD_CONST_ARRAY_NUMBERS_x(n, ...) T2FS_CONCAT(_T2FS_ADD_CONST_ARRAY_NUMBERS_, n)(__VA_ARGS__)
#define T2FS_ADD_CONST_ARRAY_NUMBERS(...) _T2FS_ADD_CONST_ARRAY_NUMBERS_x(_T2FS_N_VA_ARGS(__VA_ARGS__), __VA_ARGS__)
 
void
t2fs_endian_swap_struct(void *struc, const uint8_t *const swap, uint32_t swapCount);
 

#define T2FS_15BIT_SCALE_FACTOR(v) (v / 0b0111111111111111)
#define T2FS_BONE_ROT_SCALE_FACTOR T2FS_15BIT_SCALE_FACTOR(1.f)
#define T2FS_OBJ_ROT_SCALE_FACTOR  T2FS_15BIT_SCALE_FACTOR(180.f)
 

typedef struct __attribute__((__packed__)) s_T2FSDataCoordF32 {
 float x, y, z;
} T2FSDataCoordF32;

typedef struct __attribute__((__packed__)) s_T2FSDataWorldCoordF32 {
 float x, z, y;
} T2FSDataWorldCoordF32;

typedef struct __attribute__((__packed__)) s_T2FSDataCoordS32 {
 int32_t x, y, z;
} T2FSDataCoordS32;
 

typedef struct __attribute__((__packed__)) s_T2FSDataCoordS16 {
 int16_t x, y, z;
} T2FSDataCoordS16;
 

typedef struct __attribute__((__packed__)) s_T2FSDataWorldCoordS16 {
 int16_t x, z, y;
} T2FSDataWorldCoordS16;
 
#endif