bkr_common.h

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#ifndef BKR_COMMON_H_
#define BKR_COMMON_H_
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
 
#include "third-party/xmempool/xmempool.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define BKR_VERSION "1.0.1"
 
#ifndef NULL
#define NULL (0)
#endif
 
#define SAFE_DESTROY_POOL(pool)                                                \
  if (pool) {                                                                  \
    xmem_destroy_pool(pool);                                                   \
    pool = NULL;                                                               \
  }
 
#define SAFE_FREE(pointer)                                                     \
  if (pointer) {                                                               \
    free(pointer);                                                             \
    pointer = NULL;                                                            \
  }
 
#define MAX_INT (2147483647)
 
#define BKR_RGB_TO_INT32(r, g, b) (((r) << 16) + ((g) << 8) + (b))
 
#define DIFF_A_B_GTE_OFFSET(item, a, b, offset)                                \
  (abs((item)->a - (item)->b) <= offset)
 
#define BKR_IS_GRAY_INNER(item, offset)                                        \
  DIFF_A_B_GTE_OFFSET(item, red, green, offset) &&                             \
      DIFF_A_B_GTE_OFFSET(item, red, blue, offset) &&                          \
      DIFF_A_B_GTE_OFFSET(item, green, blue, offset)
 
#define BKR_IS_GRAY(item, offset) (BKR_IS_GRAY_INNER(item, offset))
 
typedef struct bkr_rgb {
  uint8_t red;   
  uint8_t green; 
  uint8_t blue;  
} bkr_rgb;
 
typedef struct bkr_color_stats {
  bkr_rgb color;  
  uint32_t value; 
  uint32_t count; 
} bkr_color_stats;
 
typedef struct bkr_octree_node {
  uint32_t red_components;   
  uint32_t green_components; 
  uint32_t blue_components;  
  uint8_t is_leaf;      
  uint32_t pixel_count; 
  struct bkr_octree_node* children[8]; 
} bkr_octree_node;
 
typedef struct bkr_octree_reducible_list_node {
  struct bkr_octree_node* node; 
  struct bkr_octree_reducible_list_node*
      next; 
} bkr_octree_reducible_list_node;
 
typedef struct bkr_palette_array {
  uint32_t count;  
  bkr_rgb* colors; 
} bkr_palette_array;
 
typedef struct bkr_mindiff_parameter {
  bkr_palette_array* palette; 
  int16_t gray_offset;        
} bkr_mindiff_parameter;
 
extern xmem_pool_handle bkr_rgb_pool;
 
extern int bkr_init();
 
extern void bkr_destroy();
 
extern int _stats_cmp(const void* a, const void* b);
 
#ifdef __cplusplus
}
#endif
 
#endif  // BKR_COMMON_H_