blob: 7fe2b9d11b01eb8c322ed8ab0dd1761cbeb1fdf3 (
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
|
/*
Copyright (C) 2008-2011 Fons Adriaensen <fons@linuxaudio.org>
Adopted for Ardour 2013 by Robin Gareus <robin@gareus.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 __KMETERDSP_H
#define __KMETERDSP_H
#include "ardour/libardour_visibility.h"
class LIBARDOUR_API Kmeterdsp
{
public:
Kmeterdsp (void);
~Kmeterdsp (void);
void process (float const *p, int n);
float read ();
void reset ();
static void init (int fsamp);
private:
float _z1; // filter state
float _z2; // filter state
float _rms; // max rms value since last read()
bool _flag; // flag set by read(), resets _rms
static float _omega; // ballistics filter constant.
};
#endif
|
