Ardour  9.0-pre0-582-g084a23a80d
kmeterdsp.h
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1 /*
2  * Copyright (C) 2008-2011 Fons Adriaensen <fons@linuxaudio.org>
3  * Copyright (C) 2013-2014 Paul Davis <paul@linuxaudiosystems.com>
4  * Copyright (C) 2013-2019 Robin Gareus <robin@gareus.org>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License along
17  * with this program; if not, write to the Free Software Foundation, Inc.,
18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19  */
20 
21 #ifndef __KMETERDSP_H
22 #define __KMETERDSP_H
23 
25 
27 {
28 public:
29 
30  Kmeterdsp (void);
31  ~Kmeterdsp (void);
32 
33  void process (float const *p, int n);
34  float read ();
35  void reset ();
36 
37  static void init (int fsamp);
38 
39 private:
40 
41  float _z1; // filter state
42  float _z2; // filter state
43  float _rms; // max rms value since last read()
44  bool _flag; // flag set by read(), resets _rms
45 
46  static float _omega; // ballistics filter constant.
47 };
48 
49 #endif
void process(float const *p, int n)
bool _flag
Definition: kmeterdsp.h:44
void reset()
float _z2
Definition: kmeterdsp.h:42
Kmeterdsp(void)
float _rms
Definition: kmeterdsp.h:43
~Kmeterdsp(void)
static float _omega
Definition: kmeterdsp.h:46
float _z1
Definition: kmeterdsp.h:41
static void init(int fsamp)
float read()
#define LIBARDOUR_API