[651] | 1 | //libroardsp.h: |
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| 2 | |
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[687] | 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - August 2008 |
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| 5 | * |
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| 6 | * This file is part of libroardsp a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * libroardsp is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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| 21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 22 | * |
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| 23 | */ |
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| 24 | |
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[651] | 25 | #ifndef _LIBROARDSP_H_ |
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| 26 | #define _LIBROARDSP_H_ |
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| 27 | |
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[652] | 28 | #include <roaraudio.h> |
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| 29 | |
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[686] | 30 | #include "midi.h" |
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| 31 | |
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[659] | 32 | // defines |
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| 33 | #define ROARDSP_MAX_FILTERS_PER_CHAIN 8 |
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| 34 | |
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[662] | 35 | #define ROARDSP_FILTER_NONE 0 |
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| 36 | #define ROARDSP_FILTER_AMP 1 |
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| 37 | #define ROARDSP_FILTER_LOWP 2 |
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| 38 | #define ROARDSP_FILTER_HIGHP 3 |
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| 39 | |
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[672] | 40 | // filter CTLs: |
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| 41 | |
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| 42 | #define ROARDSP_FCTL_FREQ 1 |
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| 43 | #define ROARDSP_FCTL_TIME 2 |
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| 44 | #define ROARDSP_FCTL_MUL 3 |
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| 45 | #define ROARDSP_FCTL_DIV 4 |
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| 46 | |
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[659] | 47 | // types: |
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| 48 | |
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| 49 | struct roardsp_filter { |
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| 50 | int channels; |
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| 51 | int bits; |
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[673] | 52 | int rate; |
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[659] | 53 | void * inst; |
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| 54 | int (*calc )(struct roardsp_filter * filter, void * data, size_t samples); |
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| 55 | int (*uninit)(struct roardsp_filter * filter); |
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[672] | 56 | int (*ctl )(struct roardsp_filter * filter, int cmd, void * data); |
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[659] | 57 | }; |
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| 58 | |
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| 59 | struct roardsp_filterchain { |
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| 60 | int filters; |
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| 61 | struct roardsp_filter * filter[ROARDSP_MAX_FILTERS_PER_CHAIN]; |
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| 62 | }; |
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| 63 | |
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| 64 | struct roardsp_lowp { |
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| 65 | uint32_t freq; // in mHz (0Hz..4MHz) |
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| 66 | uint16_t a, b; |
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| 67 | int32_t old[ROAR_MAX_CHANNELS]; |
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| 68 | }; |
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| 69 | |
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[685] | 70 | struct roardsp_highp { |
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| 71 | uint32_t freq; // in mHz (0Hz..4MHz) |
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| 72 | int32_t a, b, c; |
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| 73 | int32_t oldout[ROAR_MAX_CHANNELS]; |
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| 74 | int32_t oldin[ROAR_MAX_CHANNELS]; |
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| 75 | }; |
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| 76 | |
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[659] | 77 | // funcs: |
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[664] | 78 | int roardsp_filter_str2id(char * str); |
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| 79 | char * roardsp_filter_id2str(int id); |
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| 80 | int roardsp_filter_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 81 | int roardsp_filter_uninit(struct roardsp_filter * filter); |
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| 82 | int roardsp_filter_calc (struct roardsp_filter * filter, void * data, size_t len); |
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[672] | 83 | int roardsp_filter_ctl (struct roardsp_filter * filter, int cmd, void * data); |
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[659] | 84 | |
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| 85 | int roardsp_fchain_init (struct roardsp_filterchain * chain); |
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| 86 | int roardsp_fchain_uninit(struct roardsp_filterchain * chain); |
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| 87 | int roardsp_fchain_add (struct roardsp_filterchain * chain, struct roardsp_filter * filter); |
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| 88 | int roardsp_fchain_calc (struct roardsp_filterchain * chain, void * data, size_t len); |
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[679] | 89 | int roardsp_fchain_num (struct roardsp_filterchain * chain); |
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[659] | 90 | |
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[676] | 91 | // filter: |
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| 92 | |
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| 93 | int roardsp_lowp_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 94 | int roardsp_lowp_uninit(struct roardsp_filter * filter); |
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| 95 | int roardsp_lowp_calc16(struct roardsp_filter * filter, void * data, size_t samples); |
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| 96 | int roardsp_lowp_ctl (struct roardsp_filter * filter, int cmd, void * data); |
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| 97 | |
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[685] | 98 | int roardsp_highp_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 99 | int roardsp_highp_uninit(struct roardsp_filter * filter); |
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| 100 | int roardsp_highp_calc16(struct roardsp_filter * filter, void * data, size_t samples); |
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| 101 | int roardsp_highp_ctl (struct roardsp_filter * filter, int cmd, void * data); |
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[676] | 102 | |
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[735] | 103 | // codecs: |
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| 104 | int roardsp_conv_alaw2pcm16 (int16_t * out, char * in, size_t len); |
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| 105 | |
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[651] | 106 | #endif |
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| 107 | |
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| 108 | //ll |
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