[4953] | 1 | //filters.h: |
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| 2 | |
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| 3 | /* |
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[5961] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2011-2014 |
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[4953] | 5 | * |
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| 6 | * This file is part of libroar 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 | * libroar 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, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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| 23 | * |
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| 24 | * NOTE for everyone want's to change something and send patches: |
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| 25 | * read README and HACKING! There a addition information on |
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| 26 | * the license of this document you need to read before you send |
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| 27 | * any patches. |
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| 28 | * |
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| 29 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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| 30 | * or libpulse*: |
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| 31 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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| 32 | * and are therefore GPL. Because of this it may be illigal to use |
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| 33 | * them with any software that uses libesd, libartsc or libpulse*. |
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| 34 | */ |
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| 35 | |
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| 36 | #ifndef _LIBROARDSP_FILTERS_H_ |
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| 37 | #define _LIBROARDSP_FILTERS_H_ |
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| 38 | |
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| 39 | #include "libroardsp.h" |
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| 40 | |
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| 41 | #ifdef ROAR_HAVE_LIBM |
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| 42 | struct roardsp_lowp { |
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| 43 | uint32_t freq; // in mHz (0Hz..4MHz) |
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| 44 | uint16_t a, b; |
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| 45 | int32_t old[ROAR_MAX_CHANNELS]; |
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| 46 | }; |
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| 47 | |
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| 48 | struct roardsp_highp { |
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| 49 | uint32_t freq; // in mHz (0Hz..4MHz) |
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| 50 | int32_t a, b, c; |
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| 51 | int32_t oldout[ROAR_MAX_CHANNELS]; |
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| 52 | int32_t oldin[ROAR_MAX_CHANNELS]; |
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| 53 | }; |
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| 54 | #endif |
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| 55 | |
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| 56 | struct roardsp_amp { |
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| 57 | int32_t mul; |
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| 58 | int32_t div; |
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| 59 | }; |
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| 60 | |
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| 61 | struct roardsp_dcblock { |
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| 62 | int cur; |
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| 63 | int32_t dc[ROARDSP_DCBLOCK_NUMBLOCKS]; |
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| 64 | }; |
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| 65 | |
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[5173] | 66 | enum roardsp_clip_mode { |
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| 67 | ROARDSP_CLIP_MODE_LIMIT = 0, |
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| 68 | ROARDSP_CLIP_MODE_ZERO = 1, |
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| 69 | ROARDSP_CLIP_MODE_WARP = 2, |
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[5269] | 70 | ROARDSP_CLIP_MODE_NOISE = 3 |
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[5173] | 71 | }; |
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| 72 | |
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| 73 | struct roardsp_clip { |
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| 74 | enum roardsp_clip_mode mode; |
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| 75 | int32_t limit; |
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| 76 | }; |
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| 77 | |
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[4953] | 78 | struct roardsp_swap { |
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| 79 | int map[ROAR_MAX_CHANNELS]; |
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| 80 | }; |
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| 81 | |
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| 82 | struct roardsp_agc { |
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| 83 | struct roardsp_filter * amp; |
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| 84 | uint32_t target_amp; |
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| 85 | }; |
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| 86 | |
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| 87 | struct roardsp_speex_prep { |
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| 88 | #ifdef _SPEEX_TYPES_H |
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| 89 | SpeexPreprocessState *preprocess; |
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| 90 | int frame_size; |
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| 91 | #else |
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| 92 | char dummy[8]; |
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| 93 | #endif |
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| 94 | }; |
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| 95 | |
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[5269] | 96 | enum roardsp_responsecurve_mode { |
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| 97 | ROARDSP_RESPONSECURVE_MODE_PASS = 0, /* pass: o = i */ |
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| 98 | ROARDSP_RESPONSECURVE_MODE_LIN = 1, /* linear: o = -(1-i)^(N+1) + 1 */ |
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| 99 | ROARDSP_RESPONSECURVE_MODE_ILIN = 2, /* inverse linear: o = i**(N+1) */ |
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| 100 | ROARDSP_RESPONSECURVE_MODE_SIN = 3, /* sin: o = sin(pi/2 * i)^N */ |
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| 101 | ROARDSP_RESPONSECURVE_MODE_ISIN = 4, /* inverse sin: o = 1-sin((1-i)*pi/2)^N */ |
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| 102 | ROARDSP_RESPONSECURVE_MODE_COS = 5, /* cos: o = 0.5-cos(i*pi)/2 */ |
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| 103 | ROARDSP_RESPONSECURVE_MODE_ICOS = 6, /* inverse cos: o = 2*i-0.5+cos(i*pi)/2 */ |
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| 104 | }; |
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| 105 | |
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| 106 | struct roardsp_responsecurve { |
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| 107 | enum roardsp_responsecurve_mode mode_pos, mode_neg; |
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| 108 | int32_t N; |
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| 109 | }; |
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[4953] | 110 | |
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| 111 | // filter: |
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| 112 | |
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| 113 | #ifdef ROAR_HAVE_LIBM |
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| 114 | int roardsp_lowp_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 115 | int roardsp_lowp_uninit(struct roardsp_filter * filter); |
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[5181] | 116 | int roardsp_lowp_calc32(struct roardsp_filter * filter, void * data, size_t samples); |
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[4953] | 117 | int roardsp_lowp_calc16(struct roardsp_filter * filter, void * data, size_t samples); |
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[5181] | 118 | int roardsp_lowp_calc8 (struct roardsp_filter * filter, void * data, size_t samples); |
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[4953] | 119 | int roardsp_lowp_ctl (struct roardsp_filter * filter, int cmd, void * data); |
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| 120 | int roardsp_lowp_reset (struct roardsp_filter * filter, int what); |
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| 121 | |
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| 122 | int roardsp_highp_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 123 | int roardsp_highp_uninit(struct roardsp_filter * filter); |
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[5181] | 124 | int roardsp_highp_calc32(struct roardsp_filter * filter, void * data, size_t samples); |
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[4953] | 125 | int roardsp_highp_calc16(struct roardsp_filter * filter, void * data, size_t samples); |
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[5181] | 126 | int roardsp_highp_calc8 (struct roardsp_filter * filter, void * data, size_t samples); |
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[4953] | 127 | int roardsp_highp_ctl (struct roardsp_filter * filter, int cmd, void * data); |
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| 128 | int roardsp_highp_reset (struct roardsp_filter * filter, int what); |
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| 129 | #endif |
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| 130 | |
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| 131 | int roardsp_amp_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 132 | int roardsp_amp_uninit(struct roardsp_filter * filter); |
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[5181] | 133 | int roardsp_amp_calc32(struct roardsp_filter * filter, void * data, size_t samples); |
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[4953] | 134 | int roardsp_amp_calc16(struct roardsp_filter * filter, void * data, size_t samples); |
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| 135 | int roardsp_amp_calc8 (struct roardsp_filter * filter, void * data, size_t samples); |
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| 136 | int roardsp_amp_ctl (struct roardsp_filter * filter, int cmd, void * data); |
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| 137 | int roardsp_amp_reset (struct roardsp_filter * filter, int what); |
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| 138 | |
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[5181] | 139 | int roardsp_add_calc32(struct roardsp_filter * filter, void * data, size_t samples); |
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[4953] | 140 | int roardsp_add_calc16(struct roardsp_filter * filter, void * data, size_t samples); |
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[5181] | 141 | int roardsp_add_calc8 (struct roardsp_filter * filter, void * data, size_t samples); |
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[4953] | 142 | int roardsp_add_reset (struct roardsp_filter * filter, int what); |
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| 143 | |
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| 144 | int roardsp_quantify_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 145 | int roardsp_quantify_uninit(struct roardsp_filter * filter); |
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[5181] | 146 | int roardsp_quantify_calc32(struct roardsp_filter * filter, void * data, size_t samples); |
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[4953] | 147 | int roardsp_quantify_calc16(struct roardsp_filter * filter, void * data, size_t samples); |
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[5181] | 148 | int roardsp_quantify_calc8 (struct roardsp_filter * filter, void * data, size_t samples); |
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[4953] | 149 | int roardsp_quantify_ctl (struct roardsp_filter * filter, int cmd, void * data); |
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| 150 | int roardsp_quantify_reset (struct roardsp_filter * filter, int what); |
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| 151 | |
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[5173] | 152 | int roardsp_clip_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 153 | int roardsp_clip_uninit(struct roardsp_filter * filter); |
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[5177] | 154 | int roardsp_clip_calc8 (struct roardsp_filter * filter, void * data, size_t samples); |
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[4953] | 155 | int roardsp_clip_calc16(struct roardsp_filter * filter, void * data, size_t samples); |
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[5177] | 156 | int roardsp_clip_calc32(struct roardsp_filter * filter, void * data, size_t samples); |
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[4953] | 157 | int roardsp_clip_ctl (struct roardsp_filter * filter, int cmd, void * data); |
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| 158 | int roardsp_clip_reset (struct roardsp_filter * filter, int what); |
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| 159 | |
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| 160 | int roardsp_downmix_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 161 | int roardsp_downmix_calc162(struct roardsp_filter * filter, void * data, size_t samples); |
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| 162 | int roardsp_downmix_ctl (struct roardsp_filter * filter, int cmd, void * data); |
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| 163 | int roardsp_downmix_reset (struct roardsp_filter * filter, int what); |
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| 164 | |
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| 165 | int roardsp_dcblock_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 166 | int roardsp_dcblock_uninit (struct roardsp_filter * filter); |
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| 167 | int roardsp_dcblock_calc16 (struct roardsp_filter * filter, void * data, size_t samples); |
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| 168 | int roardsp_dcblock_reset (struct roardsp_filter * filter, int what); |
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| 169 | |
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| 170 | int roardsp_swap_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 171 | int roardsp_swap_uninit (struct roardsp_filter * filter); |
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[5181] | 172 | int roardsp_swap_calc322(struct roardsp_filter * filter, void * data, size_t samples); |
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[4953] | 173 | int roardsp_swap_calc162(struct roardsp_filter * filter, void * data, size_t samples); |
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[5181] | 174 | int roardsp_swap_calc82 (struct roardsp_filter * filter, void * data, size_t samples); |
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[4953] | 175 | int roardsp_swap_ctl (struct roardsp_filter * filter, int cmd, void * data); |
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| 176 | int roardsp_swap_reset (struct roardsp_filter * filter, int what); |
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| 177 | |
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| 178 | int roardsp_agc_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 179 | int roardsp_agc_uninit (struct roardsp_filter * filter); |
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| 180 | int roardsp_agc_ctl (struct roardsp_filter * filter, int cmd, void * data); |
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| 181 | int roardsp_agc_reset (struct roardsp_filter * filter, int what); |
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| 182 | |
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| 183 | #ifdef _SPEEX_TYPES_H |
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| 184 | #define ROAR_HAVE_SPEEX_FILTER |
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| 185 | int roardsp_speex_prep_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 186 | int roardsp_speex_prep_uninit (struct roardsp_filter * filter); |
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| 187 | int roardsp_speex_prep_calc161(struct roardsp_filter * filter, void * data, size_t samples); |
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| 188 | int roardsp_speex_prep_ctl (struct roardsp_filter * filter, int cmd, void * data); |
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| 189 | int roardsp_speex_prep_reset (struct roardsp_filter * filter, int what); |
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| 190 | #endif |
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| 191 | |
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[5362] | 192 | #ifdef ROAR_HAVE_LIBM |
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[5269] | 193 | int roardsp_responsecurve_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 194 | int roardsp_responsecurve_uninit(struct roardsp_filter * filter); |
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| 195 | int roardsp_responsecurve_calc32(struct roardsp_filter * filter, void * data, size_t samples); |
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| 196 | int roardsp_responsecurve_calc16(struct roardsp_filter * filter, void * data, size_t samples); |
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| 197 | int roardsp_responsecurve_calc8 (struct roardsp_filter * filter, void * data, size_t samples); |
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| 198 | int roardsp_responsecurve_ctl (struct roardsp_filter * filter, int cmd, void * data); |
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| 199 | int roardsp_responsecurve_reset (struct roardsp_filter * filter, int what); |
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[5548] | 200 | |
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| 201 | int roardsp_goertzel_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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| 202 | int roardsp_goertzel_uninit(struct roardsp_filter * filter); |
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| 203 | int roardsp_goertzel_calc32(struct roardsp_filter * filter, void * data, size_t samples); |
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| 204 | int roardsp_goertzel_calc16(struct roardsp_filter * filter, void * data, size_t samples); |
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| 205 | int roardsp_goertzel_calc8 (struct roardsp_filter * filter, void * data, size_t samples); |
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| 206 | int roardsp_goertzel_ctl (struct roardsp_filter * filter, int cmd, void * data); |
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| 207 | int roardsp_goertzel_reset (struct roardsp_filter * filter, int what); |
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[5362] | 208 | #endif |
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[4953] | 209 | |
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| 210 | #endif |
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| 211 | |
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| 212 | //ll |
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