source: roaraudio/include/libroardsp/libroardsp.h @ 1626:9f536f50c6e2

Last change on this file since 1626:9f536f50c6e2 was 1626:9f536f50c6e2, checked in by phi, 15 years ago

added files for mid-side decoding
File size: 7.6 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#include "poly.h"
34#include "convert.h"
35#include "midside.h"
36
37// defines
38#define ROARDSP_MAX_FILTERS_PER_CHAIN 8
39
40#define ROARDSP_FILTER_NONE           0
41#define ROARDSP_FILTER_AMP            1
42#define ROARDSP_FILTER_LOWP           2
43#define ROARDSP_FILTER_HIGHP          3
44#define ROARDSP_FILTER_MODULATE       4
45#define ROARDSP_FILTER_QUANTIFY       5
46#define ROARDSP_FILTER_CLIP           6
47#define ROARDSP_FILTER_ADD            7
48#define ROARDSP_FILTER_DOWNMIX        8
49#define ROARDSP_FILTER_DCBLOCK        9
50#define ROARDSP_FILTER_SWAP          10
51
52// filter CTLs:
53
54#define ROARDSP_FCTL_FREQ             1
55#define ROARDSP_FCTL_TIME             2
56#define ROARDSP_FCTL_MUL              3
57#define ROARDSP_FCTL_DIV              4
58#define ROARDSP_FCTL_N                5
59#define ROARDSP_FCTL_LIMIT            6
60#define ROARDSP_FCTL_PHASE            7
61#define ROARDSP_FCTL_Q                8
62#define ROARDSP_FCTL_MODE             9
63
64// consts for filter(chain) reset:
65#define ROARDSP_RESET_NONE            0
66#define ROARDSP_RESET_FULL            1
67#define ROARDSP_RESET_STATE           2
68
69// filter specific constants:
70#define ROARDSP_DOWNMIX_LEFT          1
71#define ROARDSP_DOWNMIX_RIGHT         2
72#define ROARDSP_DOWNMIX_ARITHMETIC    3
73#define ROARDSP_DOWNMIX_RMS           4
74
75#define ROARDSP_DCBLOCK_NUMBLOCKS     100
76
77// types:
78
79struct roardsp_filter {
80 int    channels;
81 int    bits;
82 int    rate;
83 void * inst;
84 int (*calc  )(struct roardsp_filter * filter, void * data, size_t samples);
85 int (*uninit)(struct roardsp_filter * filter);
86 int (*ctl   )(struct roardsp_filter * filter, int cmd, void * data);
87 int (*reset )(struct roardsp_filter * filter, int what);
88};
89
90struct roardsp_filterchain {
91 int filters;
92 struct roardsp_filter * filter[ROARDSP_MAX_FILTERS_PER_CHAIN];
93};
94
95#ifdef ROAR_HAVE_LIBM
96struct roardsp_lowp {
97 uint32_t freq; // in mHz (0Hz..4MHz)
98 uint16_t a, b;
99 int32_t  old[ROAR_MAX_CHANNELS];
100};
101
102struct roardsp_highp {
103 uint32_t freq; // in mHz (0Hz..4MHz)
104 int32_t  a, b, c;
105 int32_t  oldout[ROAR_MAX_CHANNELS];
106 int32_t  oldin[ROAR_MAX_CHANNELS];
107};
108#endif
109
110struct roardsp_amp {
111 int32_t  mul;
112 int32_t  div;
113};
114
115struct roardsp_dcblock {
116 int cur;
117 int32_t dc[ROARDSP_DCBLOCK_NUMBLOCKS];
118};
119
120struct roardsp_swap {
121 int map[ROAR_MAX_CHANNELS];
122};
123
124// funcs:
125int    roardsp_filter_str2id(char * str);
126char * roardsp_filter_id2str(int id);
127int    roardsp_filter_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
128int    roardsp_filter_uninit(struct roardsp_filter * filter);
129int    roardsp_filter_calc  (struct roardsp_filter * filter, void * data, size_t len);
130int    roardsp_filter_ctl   (struct roardsp_filter * filter, int cmd, void * data);
131int    roardsp_filter_reset (struct roardsp_filter * filter, int what);
132
133int roardsp_fchain_init  (struct roardsp_filterchain * chain);
134int roardsp_fchain_uninit(struct roardsp_filterchain * chain);
135int roardsp_fchain_add   (struct roardsp_filterchain * chain, struct roardsp_filter * filter);
136int roardsp_fchain_calc  (struct roardsp_filterchain * chain, void * data, size_t len);
137int roardsp_fchain_reset (struct roardsp_filterchain * chain, int what);
138int roardsp_fchain_num   (struct roardsp_filterchain * chain);
139
140// filter:
141
142#ifdef ROAR_HAVE_LIBM
143int roardsp_lowp_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
144int roardsp_lowp_uninit(struct roardsp_filter * filter);
145int roardsp_lowp_calc16(struct roardsp_filter * filter, void * data, size_t samples);
146int roardsp_lowp_ctl   (struct roardsp_filter * filter, int cmd, void * data);
147int roardsp_lowp_reset (struct roardsp_filter * filter, int what);
148
149int roardsp_highp_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
150int roardsp_highp_uninit(struct roardsp_filter * filter);
151int roardsp_highp_calc16(struct roardsp_filter * filter, void * data, size_t samples);
152int roardsp_highp_ctl   (struct roardsp_filter * filter, int cmd, void * data);
153int roardsp_highp_reset (struct roardsp_filter * filter, int what);
154#endif
155
156int roardsp_amp_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
157int roardsp_amp_uninit(struct roardsp_filter * filter);
158int roardsp_amp_calc16(struct roardsp_filter * filter, void * data, size_t samples);
159int roardsp_amp_calc8 (struct roardsp_filter * filter, void * data, size_t samples);
160int roardsp_amp_ctl   (struct roardsp_filter * filter, int cmd, void * data);
161int roardsp_amp_reset (struct roardsp_filter * filter, int what);
162
163int roardsp_add_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
164int roardsp_add_calc16(struct roardsp_filter * filter, void * data, size_t samples);
165int roardsp_add_reset (struct roardsp_filter * filter, int what);
166
167int roardsp_quantify_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
168int roardsp_quantify_uninit(struct roardsp_filter * filter);
169int roardsp_quantify_calc16(struct roardsp_filter * filter, void * data, size_t samples);
170int roardsp_quantify_ctl   (struct roardsp_filter * filter, int cmd, void * data);
171int roardsp_quantify_reset (struct roardsp_filter * filter, int what);
172
173int roardsp_clip_calc16(struct roardsp_filter * filter, void * data, size_t samples);
174int roardsp_clip_ctl   (struct roardsp_filter * filter, int cmd, void * data);
175int roardsp_clip_reset (struct roardsp_filter * filter, int what);
176
177int roardsp_downmix_init   (struct roardsp_filter * filter, struct roar_stream * stream, int id);
178int roardsp_downmix_calc162(struct roardsp_filter * filter, void * data, size_t samples);
179int roardsp_downmix_ctl    (struct roardsp_filter * filter, int cmd, void * data);
180int roardsp_downmix_reset  (struct roardsp_filter * filter, int what);
181
182int roardsp_dcblock_init   (struct roardsp_filter * filter, struct roar_stream * stream, int id);
183int roardsp_dcblock_uninit (struct roardsp_filter * filter);
184int roardsp_dcblock_calc16 (struct roardsp_filter * filter, void * data, size_t samples);
185int roardsp_dcblock_reset  (struct roardsp_filter * filter, int what);
186
187int roardsp_swap_init   (struct roardsp_filter * filter, struct roar_stream * stream, int id);
188int roardsp_swap_uninit (struct roardsp_filter * filter);
189int roardsp_swap_calc162(struct roardsp_filter * filter, void * data, size_t samples);
190int roardsp_swap_ctl    (struct roardsp_filter * filter, int cmd, void * data);
191int roardsp_swap_reset  (struct roardsp_filter * filter, int what);
192
193// codecs:
194int roardsp_conv_alaw2pcm16 (int16_t * out, char * in, size_t len);
195int roardsp_conv_pcm162alaw (char * out, int16_t * in, size_t len);
196
197int roardsp_conv_mulaw2pcm16 (int16_t * out, char * in, size_t len);
198int roardsp_conv_pcm162mulaw (char * out, int16_t * in, size_t len);
199
200__END_DECLS
201
202#endif
203
204//ll
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