/usr/include/libroardsp/filter.h is in libroar-dev 1.0~beta11-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 | //filter.h:
/*
* Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2014
*
* This file is part of libroar a part of RoarAudio,
* a cross-platform sound system for both, home and professional use.
* See README for details.
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3
* as published by the Free Software Foundation.
*
* libroar is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* NOTE for everyone want's to change something and send patches:
* read README and HACKING! There a addition information on
* the license of this document you need to read before you send
* any patches.
*
* NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc
* or libpulse*:
* The libs libroaresd, libroararts and libroarpulse link this lib
* and are therefore GPL. Because of this it may be illigal to use
* them with any software that uses libesd, libartsc or libpulse*.
*/
#ifndef _LIBROARDSP_FILTER_H_
#define _LIBROARDSP_FILTER_H_
#include "libroardsp.h"
/* implemented? */
#define ROARDSP_FILTER_NONE 0
#define ROARDSP_FILTER_AMP 1 /* yes */
#define ROARDSP_FILTER_LOWP 2 /* yes */
#define ROARDSP_FILTER_HIGHP 3 /* yes */
#define ROARDSP_FILTER_MODULATE 4
#define ROARDSP_FILTER_QUANTIFY 5 /* yes */
#define ROARDSP_FILTER_CLIP 6 /* yes */
#define ROARDSP_FILTER_ADD 7 /* yes */
#define ROARDSP_FILTER_DOWNMIX 8 /* yes */
#define ROARDSP_FILTER_DCBLOCK 9
#define ROARDSP_FILTER_SWAP 10 /* yes */
#define ROARDSP_FILTER_SPEEX_PREP 11 /* yes */
#define ROARDSP_FILTER_AGC 12
#define ROARDSP_FILTER_NOISEGATE 13
#define ROARDSP_FILTER_RESPONSE_CURVE 14
#define ROARDSP_FILTER_GOERTZEL 15
// filter CTLs:
#define ROARDSP_FCTL_FREQ 1 /* float */
#define ROARDSP_FCTL_TIME 2
#define ROARDSP_FCTL_MUL 3 /* int32_t */
#define ROARDSP_FCTL_DIV 4 /* int32_t */
#define ROARDSP_FCTL_N 5 /* int32_t */
#define ROARDSP_FCTL_LIMIT 6 /* int32_t */
#define ROARDSP_FCTL_PHASE 7
#define ROARDSP_FCTL_Q 8 /* int32_t */
#define ROARDSP_FCTL_MODE 9 /* int32_t */
#define ROARDSP_FCTL_PACKET_SIZE 10 /* size_t */
// consts for filter flags:
#define ROARDSP_FFLAG_NONE 0x0000
#define ROARDSP_FFLAG_FREE 0x0001
// consts for filter(chain) reset:
#define ROARDSP_RESET_NONE 0
#define ROARDSP_RESET_FULL 1
#define ROARDSP_RESET_STATE 2
// filter specific constants:
#define ROARDSP_DOWNMIX_LEFT 1
#define ROARDSP_DOWNMIX_RIGHT 2
#define ROARDSP_DOWNMIX_ARITHMETIC 3
#define ROARDSP_DOWNMIX_RMS 4
#define ROARDSP_DOWNMIX_ARITHMETIC_INVERSE 5
#define ROARDSP_DCBLOCK_NUMBLOCKS 100
#define ROARDSP_SPEEX_PREP_ON 0x0001
#define ROARDSP_SPEEX_PREP_OFF 0x0002
#define ROARDSP_SPEEX_PREP_MASK (ROARDSP_SPEEX_PREP_ON|ROARDSP_SPEEX_PREP_OFF)
// Config Bit Vector
#define ROARDSP_SPEEX_PREP_CBV(opt,sw) ((sw)<<((opt)*2))
#define ROARDSP_SPEEX_PREP_CTB(opt,val) (((val) & ROARDSP_SPEEX_PREP_CBV((opt),ROARDSP_SPEEX_PREP_MASK)) >> ((opt)*2))
#define ROARDSP_SPEEX_PREP_DENOISE 0
#define ROARDSP_SPEEX_PREP_AGC 1
#define ROARDSP_SPEEX_PREP_VAD 2
#define ROARDSP_SPEEX_PREP_DENOISE_ON ROARDSP_SPEEX_PREP_CBV(ROARDSP_SPEEX_PREP_DENOISE, ROARDSP_SPEEX_PREP_ON)
#define ROARDSP_SPEEX_PREP_DENOISE_OFF ROARDSP_SPEEX_PREP_CBV(ROARDSP_SPEEX_PREP_DENOISE, ROARDSP_SPEEX_PREP_OFF)
#define ROARDSP_SPEEX_PREP_AGC_ON ROARDSP_SPEEX_PREP_CBV(ROARDSP_SPEEX_PREP_AGC, ROARDSP_SPEEX_PREP_ON)
#define ROARDSP_SPEEX_PREP_AGC_OFF ROARDSP_SPEEX_PREP_CBV(ROARDSP_SPEEX_PREP_AGC, ROARDSP_SPEEX_PREP_OFF)
#define ROARDSP_SPEEX_PREP_VAD_ON ROARDSP_SPEEX_PREP_CBV(ROARDSP_SPEEX_PREP_VAD, ROARDSP_SPEEX_PREP_ON)
#define ROARDSP_SPEEX_PREP_VAD_OFF ROARDSP_SPEEX_PREP_CBV(ROARDSP_SPEEX_PREP_VAD, ROARDSP_SPEEX_PREP_OFF)
// types:
struct roardsp_filter {
int channels;
int bits;
int rate;
void * inst;
uint_least16_t flags;
int (*calc )(struct roardsp_filter * filter, void * data, size_t samples);
int (*uninit)(struct roardsp_filter * filter);
int (*ctl )(struct roardsp_filter * filter, int cmd, void * data);
int (*reset )(struct roardsp_filter * filter, int what);
};
// funcs:
int roardsp_filter_str2id(const char * str);
const char * roardsp_filter_id2str(const int id);
int roardsp_filter_new (struct roardsp_filter ** filter, struct roar_stream * stream, int id);
#define roardsp_filter_free(x) roardsp_filter_uninit((x))
int roardsp_filter_init (struct roardsp_filter * filter, struct roar_stream * stream, int id);
int roardsp_filter_uninit(struct roardsp_filter * filter);
int roardsp_filter_calc (struct roardsp_filter * filter, void * data, size_t len);
int roardsp_filter_ctl (struct roardsp_filter * filter, int cmd, void * data);
int roardsp_filter_reset (struct roardsp_filter * filter, int what);
#endif
//ll
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