source: roaraudio/include/libroardsp/filters.h @ 5181:ca57e34b2a35

Last change on this file since 5181:ca57e34b2a35 was 5181:ca57e34b2a35, checked in by phi, 13 years ago

updated filters to support 8 and 32 bit as well as 16 bit
File size: 7.5 KB
Line 
1//filters.h:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2011
5 *
6 *  This file is part of libroar 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 *  libroar 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, 51 Franklin Street, Fifth Floor,
22 *  Boston, MA 02110-1301, USA.
23 *
24 *  NOTE for everyone want's to change something and send patches:
25 *  read README and HACKING! There a addition information on
26 *  the license of this document you need to read before you send
27 *  any patches.
28 *
29 *  NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc
30 *  or libpulse*:
31 *  The libs libroaresd, libroararts and libroarpulse link this lib
32 *  and are therefore GPL. Because of this it may be illigal to use
33 *  them with any software that uses libesd, libartsc or libpulse*.
34 */
35
36#ifndef _LIBROARDSP_FILTERS_H_
37#define _LIBROARDSP_FILTERS_H_
38
39#include "libroardsp.h"
40
41#ifdef ROAR_HAVE_LIBM
42struct roardsp_lowp {
43 uint32_t freq; // in mHz (0Hz..4MHz)
44 uint16_t a, b;
45 int32_t  old[ROAR_MAX_CHANNELS];
46};
47
48struct roardsp_highp {
49 uint32_t freq; // in mHz (0Hz..4MHz)
50 int32_t  a, b, c;
51 int32_t  oldout[ROAR_MAX_CHANNELS];
52 int32_t  oldin[ROAR_MAX_CHANNELS];
53};
54#endif
55
56struct roardsp_amp {
57 int32_t  mul;
58 int32_t  div;
59};
60
61struct roardsp_dcblock {
62 int cur;
63 int32_t dc[ROARDSP_DCBLOCK_NUMBLOCKS];
64};
65
66enum roardsp_clip_mode {
67 ROARDSP_CLIP_MODE_LIMIT = 0,
68 ROARDSP_CLIP_MODE_ZERO  = 1,
69 ROARDSP_CLIP_MODE_WARP  = 2,
70 ROARDSP_CLIP_MODE_NOISE  = 3,
71};
72
73struct roardsp_clip {
74 enum roardsp_clip_mode mode;
75 int32_t limit;
76};
77
78struct roardsp_swap {
79 int map[ROAR_MAX_CHANNELS];
80};
81
82struct roardsp_agc {
83 struct roardsp_filter * amp;
84 uint32_t target_amp;
85};
86
87struct roardsp_speex_prep {
88#ifdef _SPEEX_TYPES_H
89 SpeexPreprocessState *preprocess;
90 int frame_size;
91#else
92 char dummy[8];
93#endif
94};
95
96
97// filter:
98
99#ifdef ROAR_HAVE_LIBM
100int roardsp_lowp_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
101int roardsp_lowp_uninit(struct roardsp_filter * filter);
102int roardsp_lowp_calc32(struct roardsp_filter * filter, void * data, size_t samples);
103int roardsp_lowp_calc16(struct roardsp_filter * filter, void * data, size_t samples);
104int roardsp_lowp_calc8 (struct roardsp_filter * filter, void * data, size_t samples);
105int roardsp_lowp_ctl   (struct roardsp_filter * filter, int cmd, void * data);
106int roardsp_lowp_reset (struct roardsp_filter * filter, int what);
107
108int roardsp_highp_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
109int roardsp_highp_uninit(struct roardsp_filter * filter);
110int roardsp_highp_calc32(struct roardsp_filter * filter, void * data, size_t samples);
111int roardsp_highp_calc16(struct roardsp_filter * filter, void * data, size_t samples);
112int roardsp_highp_calc8 (struct roardsp_filter * filter, void * data, size_t samples);
113int roardsp_highp_ctl   (struct roardsp_filter * filter, int cmd, void * data);
114int roardsp_highp_reset (struct roardsp_filter * filter, int what);
115#endif
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_calc32(struct roardsp_filter * filter, void * data, size_t samples);
120int roardsp_amp_calc16(struct roardsp_filter * filter, void * data, size_t samples);
121int roardsp_amp_calc8 (struct roardsp_filter * filter, void * data, size_t samples);
122int roardsp_amp_ctl   (struct roardsp_filter * filter, int cmd, void * data);
123int roardsp_amp_reset (struct roardsp_filter * filter, int what);
124
125int roardsp_add_calc32(struct roardsp_filter * filter, void * data, size_t samples);
126int roardsp_add_calc16(struct roardsp_filter * filter, void * data, size_t samples);
127int roardsp_add_calc8 (struct roardsp_filter * filter, void * data, size_t samples);
128int roardsp_add_reset (struct roardsp_filter * filter, int what);
129
130int roardsp_quantify_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
131int roardsp_quantify_uninit(struct roardsp_filter * filter);
132int roardsp_quantify_calc32(struct roardsp_filter * filter, void * data, size_t samples);
133int roardsp_quantify_calc16(struct roardsp_filter * filter, void * data, size_t samples);
134int roardsp_quantify_calc8 (struct roardsp_filter * filter, void * data, size_t samples);
135int roardsp_quantify_ctl   (struct roardsp_filter * filter, int cmd, void * data);
136int roardsp_quantify_reset (struct roardsp_filter * filter, int what);
137
138int roardsp_clip_init  (struct roardsp_filter * filter, struct roar_stream * stream, int id);
139int roardsp_clip_uninit(struct roardsp_filter * filter);
140int roardsp_clip_calc8 (struct roardsp_filter * filter, void * data, size_t samples);
141int roardsp_clip_calc16(struct roardsp_filter * filter, void * data, size_t samples);
142int roardsp_clip_calc32(struct roardsp_filter * filter, void * data, size_t samples);
143int roardsp_clip_ctl   (struct roardsp_filter * filter, int cmd, void * data);
144int roardsp_clip_reset (struct roardsp_filter * filter, int what);
145
146int roardsp_downmix_init   (struct roardsp_filter * filter, struct roar_stream * stream, int id);
147int roardsp_downmix_calc162(struct roardsp_filter * filter, void * data, size_t samples);
148int roardsp_downmix_ctl    (struct roardsp_filter * filter, int cmd, void * data);
149int roardsp_downmix_reset  (struct roardsp_filter * filter, int what);
150
151int roardsp_dcblock_init   (struct roardsp_filter * filter, struct roar_stream * stream, int id);
152int roardsp_dcblock_uninit (struct roardsp_filter * filter);
153int roardsp_dcblock_calc16 (struct roardsp_filter * filter, void * data, size_t samples);
154int roardsp_dcblock_reset  (struct roardsp_filter * filter, int what);
155
156int roardsp_swap_init   (struct roardsp_filter * filter, struct roar_stream * stream, int id);
157int roardsp_swap_uninit (struct roardsp_filter * filter);
158int roardsp_swap_calc322(struct roardsp_filter * filter, void * data, size_t samples);
159int roardsp_swap_calc162(struct roardsp_filter * filter, void * data, size_t samples);
160int roardsp_swap_calc82 (struct roardsp_filter * filter, void * data, size_t samples);
161int roardsp_swap_ctl    (struct roardsp_filter * filter, int cmd, void * data);
162int roardsp_swap_reset  (struct roardsp_filter * filter, int what);
163
164int roardsp_agc_init   (struct roardsp_filter * filter, struct roar_stream * stream, int id);
165int roardsp_agc_uninit (struct roardsp_filter * filter);
166int roardsp_agc_ctl    (struct roardsp_filter * filter, int cmd, void * data);
167int roardsp_agc_reset  (struct roardsp_filter * filter, int what);
168
169#ifdef _SPEEX_TYPES_H
170#define ROAR_HAVE_SPEEX_FILTER
171int roardsp_speex_prep_init   (struct roardsp_filter * filter, struct roar_stream * stream, int id);
172int roardsp_speex_prep_uninit (struct roardsp_filter * filter);
173int roardsp_speex_prep_calc161(struct roardsp_filter * filter, void * data, size_t samples);
174int roardsp_speex_prep_ctl    (struct roardsp_filter * filter, int cmd, void * data);
175int roardsp_speex_prep_reset  (struct roardsp_filter * filter, int what);
176#endif
177
178
179#endif
180
181//ll
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