blob: 9f25945fc1a7baac6ca8881cedfec029d584d532 (
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
59
60
61
|
/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
QM DSP Library
Centre for Digital Music, Queen Mary, University of London.
This file 2005-2006 Christian Landone.
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. See the file
COPYING included with this distribution for more information.
*/
#ifndef FILTER_H
#define FILTER_H
#ifndef NULL
#define NULL 0
#endif
/**
* Filter specification. For a filter of order ord, the ACoeffs and
* BCoeffs arrays must point to ord+1 values each. ACoeffs provides
* the denominator and BCoeffs the numerator coefficients of the
* filter.
*/
struct FilterConfig{
unsigned int ord;
double* ACoeffs;
double* BCoeffs;
};
/**
* Digital filter specified through FilterConfig structure.
*/
class Filter
{
public:
Filter( FilterConfig Config );
virtual ~Filter();
void reset();
void process( double *src, double *dst, unsigned int length );
private:
void initialise( FilterConfig Config );
void deInitialise();
unsigned int m_ord;
double* m_inBuffer;
double* m_outBuffer;
double* m_ACoeffs;
double* m_BCoeffs;
};
#endif
|