source: roaraudio/include/libroardsp/libroardsp.h @ 979:2d5a48c15b5f

Last change on this file since 979:2d5a48c15b5f was 979:2d5a48c15b5f, checked in by phi, 15 years ago

added new filter: Add, Quantifier, Clip
File size: 5.2 KB
Line 
1//libroardsp.h:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - August 2008
5 *
6 *  This file is part of libroardsp a part of RoarAudio,
7 *  a cross-platform sound system for both, home and professional use.
8 *  See README for details.
9 *
10 *  This file is free software; you can redistribute it and/or modify
11 *  it under the terms of the GNU General Public License version 3
12 *  as published by the Free Software Foundation.
13 *
14 *  libroardsp is distributed in the hope that it will be useful,
15 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
16 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 *  GNU General Public License for more details.
18 *
19 *  You should have received a copy of the GNU General Public License
20 *  along with this software; see the file COPYING.  If not, write to
21 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
22 *
23 */
24
25#ifndef _LIBROARDSP_H_
26#define _LIBROARDSP_H_
27
28#include <roaraudio.h>
29
30__BEGIN_DECLS
31
32#include "midi.h"
33
34// defines
35#define ROARDSP_MAX_FILTERS_PER_CHAIN 8
36
37#define ROARDSP_FILTER_NONE           0
38#define ROARDSP_FILTER_AMP            1
39#define ROARDSP_FILTER_LOWP           2
40#define ROARDSP_FILTER_HIGHP          3
41#define ROARDSP_FILTER_MODULATE       4
42#define ROARDSP_FILTER_QUANTIFY       5
43#define ROARDSP_FILTER_CLIP           6
44#define ROARDSP_FILTER_ADD            7
45
46// filter CTLs:
47
48#define ROARDSP_FCTL_FREQ             1
49#define ROARDSP_FCTL_TIME             2
50#define ROARDSP_FCTL_MUL              3
51#define ROARDSP_FCTL_DIV              4
52#define ROARDSP_FCTL_N                5
53#define ROARDSP_FCTL_LIMIT            6
54#define ROARDSP_FCTL_PHASE            7
55
56// types:
57
58struct roardsp_filter {
59 int    channels;
60 int    bits;
61 int    rate;
62 void * inst;
63 int (*calc  )(struct roardsp_filter * filter, void * data, size_t samples);
64 int (*uninit)(struct roardsp_filter * filter);
65 int (*ctl   )(struct roardsp_filter * filter, int cmd, void * data);
66};
67
68struct roardsp_filterchain {
69 int filters;
70 struct roardsp_filter * filter[ROARDSP_MAX_FILTERS_PER_CHAIN];
71};
72
73struct roardsp_lowp {
74 uint32_t freq; // in mHz (0Hz..4MHz)
75 uint16_t a, b;
76 int32_t  old[ROAR_MAX_CHANNELS];
77};
78
79struct roardsp_highp {
80 uint32_t freq; // in mHz (0Hz..4MHz)
81 int32_t  a, b, c;
82 int32_t  oldout[ROAR_MAX_CHANNELS];
83 int32_t  oldin[ROAR_MAX_CHANNELS];
84};
85
86struct roardsp_amp {
87 int32_t  mul;
88 int32_t  div;
89};
90
91// funcs:
92int    roardsp_filter_str2id(char * str);
93char * roardsp_filter_id2str(int id);
94int    roardsp_filter_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
95int    roardsp_filter_uninit(struct roardsp_filter * filter);
96int    roardsp_filter_calc  (struct roardsp_filter * filter, void * data, size_t len);
97int    roardsp_filter_ctl   (struct roardsp_filter * filter, int cmd, void * data);
98
99int roardsp_fchain_init  (struct roardsp_filterchain * chain);
100int roardsp_fchain_uninit(struct roardsp_filterchain * chain);
101int roardsp_fchain_add   (struct roardsp_filterchain * chain, struct roardsp_filter * filter);
102int roardsp_fchain_calc  (struct roardsp_filterchain * chain, void * data, size_t len);
103int roardsp_fchain_num   (struct roardsp_filterchain * chain);
104
105// filter:
106
107int roardsp_lowp_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
108int roardsp_lowp_uninit(struct roardsp_filter * filter);
109int roardsp_lowp_calc16(struct roardsp_filter * filter, void * data, size_t samples);
110int roardsp_lowp_ctl   (struct roardsp_filter * filter, int cmd, void * data);
111
112int roardsp_highp_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
113int roardsp_highp_uninit(struct roardsp_filter * filter);
114int roardsp_highp_calc16(struct roardsp_filter * filter, void * data, size_t samples);
115int roardsp_highp_ctl   (struct roardsp_filter * filter, int cmd, void * data);
116
117int roardsp_amp_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
118int roardsp_amp_uninit(struct roardsp_filter * filter);
119int roardsp_amp_calc16(struct roardsp_filter * filter, void * data, size_t samples);
120int roardsp_amp_calc8 (struct roardsp_filter * filter, void * data, size_t samples);
121int roardsp_amp_ctl   (struct roardsp_filter * filter, int cmd, void * data);
122
123int roardsp_add_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
124int roardsp_add_calc16(struct roardsp_filter * filter, void * data, size_t samples);
125
126int roardsp_quantify_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
127int roardsp_quantify_uninit(struct roardsp_filter * filter);
128int roardsp_quantify_calc16(struct roardsp_filter * filter, void * data, size_t samples);
129int roardsp_quantify_ctl   (struct roardsp_filter * filter, int cmd, void * data);
130
131int roardsp_clip_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
132int roardsp_clip_calc16(struct roardsp_filter * filter, void * data, size_t samples);
133int roardsp_clip_ctl   (struct roardsp_filter * filter, int cmd, void * data);
134
135// codecs:
136int roardsp_conv_alaw2pcm16 (int16_t * out, char * in, size_t len);
137int roardsp_conv_pcm162alaw (char * out, int16_t * in, size_t len);
138
139int roardsp_conv_mulaw2pcm16 (int16_t * out, char * in, size_t len);
140int roardsp_conv_pcm162mulaw (char * out, int16_t * in, size_t len);
141
142__END_DECLS
143
144#endif
145
146//ll
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