blob: d2f24cc4387b31dafb0fad520f5df1583007e08d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
#ifndef _SIMPL_MQ_H
#define _SIMPL_MQ_H
#include <cstdlib>
#include <fftw3.h>
#include <math.h>
#include <string.h>
namespace simpl
{
typedef double sample;
typedef struct MQPeak {
float amplitude;
float frequency;
float phase;
int bin;
struct MQPeak* next;
struct MQPeak* prev;
} MQPeak;
typedef struct MQPeakList {
struct MQPeakList* next;
struct MQPeakList* prev;
struct MQPeak* peak;
} MQPeakList;
typedef struct MQParameters {
int frame_size;
int max_peaks;
int num_bins;
sample peak_threshold;
sample fundamental;
sample matching_interval;
sample* window;
sample* fft_in;
fftw_complex* fft_out;
fftw_plan fft_plan;
MQPeakList* prev_peaks;
} MQParameters;
int init_mq(MQParameters* params);
void reset_mq(MQParameters* params);
int destroy_mq(MQParameters* params);
void delete_peak_list(MQPeakList* peak_list);
MQPeakList* mq_sort_peaks_by_frequency(MQPeakList* peak_list, int num_peaks);
MQPeakList* mq_find_peaks(int signal_size, sample* signal,
MQParameters* params);
MQPeakList* mq_track_peaks(MQPeakList* peak_list, MQParameters* params);
} // end of namespace simpl
#endif
|