fast-yolo4/3rdparty/opencv/inc/opencv2/surface_matching/t_hash_int.hpp
2024-09-25 09:43:03 +08:00

114 lines
3.6 KiB
C++

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/** @file
@author Tolga Birdal <tbirdal AT gmail.com>
*/
#ifndef __OPENCV_SURFACE_MATCHING_T_HASH_INT_HPP__
#define __OPENCV_SURFACE_MATCHING_T_HASH_INT_HPP__
#include <stdio.h>
#include <stdlib.h>
namespace cv
{
namespace ppf_match_3d
{
//! @addtogroup surface_matching
//! @{
typedef uint KeyType;
typedef struct hashnode_i
{
KeyType key;
void *data;
struct hashnode_i *next;
} hashnode_i ;
typedef struct HSHTBL_i
{
size_t size;
struct hashnode_i **nodes;
size_t (*hashfunc)(uint);
} hashtable_int;
/** @brief Round up to the next highest power of 2
from http://www-graphics.stanford.edu/~seander/bithacks.html
*/
inline static uint next_power_of_two(uint value)
{
--value;
value |= value >> 1;
value |= value >> 2;
value |= value >> 4;
value |= value >> 8;
value |= value >> 16;
++value;
return value;
}
hashtable_int *hashtableCreate(size_t size, size_t (*hashfunc)(uint));
void hashtableDestroy(hashtable_int *hashtbl);
int hashtableInsert(hashtable_int *hashtbl, KeyType key, void *data);
int hashtableInsertHashed(hashtable_int *hashtbl, KeyType key, void *data);
int hashtableRemove(hashtable_int *hashtbl, KeyType key);
void *hashtableGet(hashtable_int *hashtbl, KeyType key);
hashnode_i* hashtableGetBucketHashed(hashtable_int *hashtbl, KeyType key);
int hashtableResize(hashtable_int *hashtbl, size_t size);
hashtable_int *hashtable_int_clone(hashtable_int *hashtbl);
hashtable_int *hashtableRead(FILE* f);
int hashtableWrite(const hashtable_int * hashtbl, const size_t dataSize, FILE* f);
void hashtablePrint(hashtable_int *hashtbl);
//! @}
} // namespace ppf_match_3d
} // namespace cv
#endif