2 Copyright (C) 2012 Fons Adriaensen <fons@linuxaudio.org>
3 Adopted for Ardour 2013 by Robin Gareus <robin@gareus.org>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include "ardour/iec2ppmdsp.h"
24 float Iec2ppmdsp::_w1;
25 float Iec2ppmdsp::_w2;
26 float Iec2ppmdsp::_w3;
30 Iec2ppmdsp::Iec2ppmdsp (void) :
39 Iec2ppmdsp::~Iec2ppmdsp (void)
44 void Iec2ppmdsp::process (float const *p, int n)
48 z1 = _z1 > 20 ? 20 : (_z1 < 0 ? 0 : _z1);
49 z2 = _z2 > 20 ? 20 : (_z2 < 0 ? 0 : _z2);
59 if (t > z1) z1 += _w1 * (t - z1);
60 if (t > z2) z2 += _w2 * (t - z2);
62 if (t > z1) z1 += _w1 * (t - z1);
63 if (t > z2) z2 += _w2 * (t - z2);
65 if (t > z1) z1 += _w1 * (t - z1);
66 if (t > z2) z2 += _w2 * (t - z2);
68 if (t > z1) z1 += _w1 * (t - z1);
69 if (t > z2) z2 += _w2 * (t - z2);
80 float Iec2ppmdsp::read (void)
86 void Iec2ppmdsp::reset ()
92 void Iec2ppmdsp::init (float fsamp)
96 _w3 = 1.0f - 4.0f / fsamp;
100 /* vi:set ts=8 sts=8 sw=4: */