libsidplayfp  1.8.7
SincResampler.h
1 /*
2  * This file is part of libsidplayfp, a SID player engine.
3  *
4  * Copyright 2011-2013 Leandro Nini <drfiemost@users.sourceforge.net>
5  * Copyright 2007-2010 Antti Lankila
6  * Copyright 2004 Dag Lem <resid@nimrod.no>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21  */
22 
23 #ifndef SINCRESAMPLER_H
24 #define SINCRESAMPLER_H
25 
26 #include "Resampler.h"
27 
28 #include <string>
29 #include <map>
30 
31 #include "../array.h"
32 
33 namespace reSIDfp
34 {
35 
51 class SincResampler : public Resampler
52 {
53 private:
54  static const int RINGSIZE = 2048;
55 
56 private:
58  matrix_t* firTable;
59 
60  int sampleIndex;
61 
63  int firRES;
64 
66  int firN;
67 
68  const int cyclesPerSample;
69 
70  int sampleOffset;
71 
72  int outputValue;
73 
74  short sample[RINGSIZE * 2];
75 
76 private:
77  int fir(int subcycle);
78 
79 public:
100  SincResampler(double clockFrequency, double samplingFrequency, double highestAccurateFrequency);
101 
102  bool input(int input);
103 
104  int output() const { return outputValue; }
105 
106  void reset();
107 };
108 
109 } // namespace reSIDfp
110 
111 #endif
Definition: SincResampler.h:51
Definition: array.h:41
Definition: Dac.cpp:25
bool input(int input)
Definition: SincResampler.cpp:240
Definition: Resampler.h:32
SincResampler(double clockFrequency, double samplingFrequency, double highestAccurateFrequency)
Definition: SincResampler.cpp:145