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
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
// -----------------------------------------------------------------------
//
// Copyright (C) 2009-2011 Fons Adriaensen <fons@linuxaudio.org>
//
// This program 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 2 of the License, or
// (at your option) any later version.
//
// This program 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, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// -----------------------------------------------------------------------
#ifndef __RETUNER_H
#define __RETUNER_H
#include <fftw3.h>
#include <zita-resampler/resampler.h>
class Retuner
{
public:
Retuner (int fsamp);
~Retuner (void);
int process (int nfram, float *inp, float *out);
void set_refpitch (float v)
{
_refpitch = v;
}
void set_notebias (float v)
{
_notebias = v / 13.0f;
}
void set_corrfilt (float v)
{
_corrfilt = (4 * _frsize) / (v * _fsamp);
}
void set_corrgain (float v)
{
_corrgain = v;
}
void set_corroffs (float v)
{
_corroffs = v;
}
void set_notemask (int k)
{
_notemask = k;
}
int get_noteset (void)
{
int k;
k = _notebits;
_notebits = 0;
return k;
}
float get_error (void)
{
return 12.0f * _error;
}
private:
void findcycle (void);
void finderror (void);
float cubic (float *v, float a);
int _fsamp;
int _ifmin;
int _ifmax;
bool _upsamp;
int _fftlen;
int _ipsize;
int _frsize;
int _ipindex;
int _frindex;
int _frcount;
float _refpitch;
float _notebias;
float _corrfilt;
float _corrgain;
float _corroffs;
int _notemask;
int _notebits;
int _lastnote;
int _count;
float _cycle;
float _error;
float _ratio;
float _phase;
bool _xfade;
float _rindex1;
float _rindex2;
float *_ipbuff;
float *_xffunc;
float *_fftTwind;
float *_fftWcorr;
float *_fftTdata;
fftwf_complex *_fftFdata;
fftwf_plan _fwdplan;
fftwf_plan _invplan;
Resampler _resampler;
};
#endif
|
