#ifndef HEART_SUANFA_H
#define HEART_SUANFA_H
#define true 1
#define false 0
#define FS 100
#define BUFFER_SIZE (FS* 5)
//#define BUFFER_SIZE (FS* 2)
#define HR_FIFO_SIZE 7
#define MA4_SIZE 4 // DO NOT CHANGE
#define HAMMING_SIZE 5// DO NOT CHANGE
#define MY_MIN(x,y) ((x) < (y) ? (x) : (y))
const unsigned short auw_hamm[31]={ 41, 276, 512, 276, 41 };
const unsigned char uch_spo2_table[184]={
95, 95, 95, 96, 96, 96, 97, 97, 97, 97,
97, 98, 98, 98, 98, 98, 99, 99, 99, 99,
99, 99, 99, 99, 100, 100, 100, 100, 100, 100,
100, 100, 100, 100, 100, 100, 100, 100, 100, 100,
100, 100, 100, 100, 99, 99, 99, 99, 99,
99, 99, 99, 98, 98, 98, 98, 98, 98, 97, 97,
97, 97, 96, 96, 96, 96, 95, 95, 95, 94,
94, 94, 93, 93, 93, 92, 92, 92, 91, 91,
90, 90, 89, 89, 89, 88, 88, 87, 87, 86,
86, 85, 85, 84, 84, 83, 82, 82, 81, 81,
80, 80, 79, 78, 78, 77, 76, 76, 75, 74,
74, 73, 72, 72, 71, 70, 69, 69, 68, 67,
66, 66, 65, 64, 63, 62, 62, 61, 60, 59,
58, 57, 56, 56, 55, 54, 53, 52, 51, 50,
49, 48, 47, 46, 45, 44, 43, 42, 41, 40,
39, 38, 37, 36, 35, 34, 33, 31, 30, 29,
28, 27, 26, 25, 23, 22, 21, 20, 19, 17,
16, 15, 14, 12, 11, 10, 9, 7, 6, 5,
3, 2, 1 } ;
static int an_dx[BUFFER_SIZE-MA4_SIZE];
static int an_x[ BUFFER_SIZE]; //ir
static int an_y[ BUFFER_SIZE]; //red
void maxim_heart_rate_and_oxygen_saturation(
 unsigned int *pun_ir_buffer , int n_ir_buffer_length,
unsigned int *pun_red_buffer , int *pn_spo2,
int *pch_spo2_valid , int *pn_heart_rate , int *pch_hr_valid);
void maxim_find_peaks( int *pn_locs, int *pn_npks,
int *pn_x, int n_size, int n_min_height,
int n_min_distance, int n_max_num );
void maxim_peaks_above_min_height( int *pn_locs, int *pn_npks,
int *pn_x, int n_size, int n_min_height );
void maxim_remove_close_peaks( int *pn_locs, int *pn_npks,
int *pn_x, int n_min_distance );
void maxim_sort_ascend( int *pn_x, int n_size );
void maxim_sort_indices_descend( int *pn_x, int *pn_indx, int n_size);
class heart_suanfa
{
public:
    heart_suanfa();
};

#endif // HEART_SUANFA_H