//filters.h: /* * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2011-2012 * * 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_FILTERS_H_ #define _LIBROARDSP_FILTERS_H_ #include "libroardsp.h" #ifdef ROAR_HAVE_LIBM struct roardsp_lowp { uint32_t freq; // in mHz (0Hz..4MHz) uint16_t a, b; int32_t old[ROAR_MAX_CHANNELS]; }; struct roardsp_highp { uint32_t freq; // in mHz (0Hz..4MHz) int32_t a, b, c; int32_t oldout[ROAR_MAX_CHANNELS]; int32_t oldin[ROAR_MAX_CHANNELS]; }; #endif struct roardsp_amp { int32_t mul; int32_t div; }; struct roardsp_dcblock { int cur; int32_t dc[ROARDSP_DCBLOCK_NUMBLOCKS]; }; enum roardsp_clip_mode { ROARDSP_CLIP_MODE_LIMIT = 0, ROARDSP_CLIP_MODE_ZERO = 1, ROARDSP_CLIP_MODE_WARP = 2, ROARDSP_CLIP_MODE_NOISE = 3 }; struct roardsp_clip { enum roardsp_clip_mode mode; int32_t limit; }; struct roardsp_swap { int map[ROAR_MAX_CHANNELS]; }; struct roardsp_agc { struct roardsp_filter * amp; uint32_t target_amp; }; struct roardsp_speex_prep { #ifdef _SPEEX_TYPES_H SpeexPreprocessState *preprocess; int frame_size; #else char dummy[8]; #endif }; enum roardsp_responsecurve_mode { ROARDSP_RESPONSECURVE_MODE_PASS = 0, /* pass: o = i */ ROARDSP_RESPONSECURVE_MODE_LIN = 1, /* linear: o = -(1-i)^(N+1) + 1 */ ROARDSP_RESPONSECURVE_MODE_ILIN = 2, /* inverse linear: o = i**(N+1) */ ROARDSP_RESPONSECURVE_MODE_SIN = 3, /* sin: o = sin(pi/2 * i)^N */ ROARDSP_RESPONSECURVE_MODE_ISIN = 4, /* inverse sin: o = 1-sin((1-i)*pi/2)^N */ ROARDSP_RESPONSECURVE_MODE_COS = 5, /* cos: o = 0.5-cos(i*pi)/2 */ ROARDSP_RESPONSECURVE_MODE_ICOS = 6, /* inverse cos: o = 2*i-0.5+cos(i*pi)/2 */ }; struct roardsp_responsecurve { enum roardsp_responsecurve_mode mode_pos, mode_neg; int32_t N; }; // filter: #ifdef ROAR_HAVE_LIBM int roardsp_lowp_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); int roardsp_lowp_uninit(struct roardsp_filter * filter); int roardsp_lowp_calc32(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_lowp_calc16(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_lowp_calc8 (struct roardsp_filter * filter, void * data, size_t samples); int roardsp_lowp_ctl (struct roardsp_filter * filter, int cmd, void * data); int roardsp_lowp_reset (struct roardsp_filter * filter, int what); int roardsp_highp_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); int roardsp_highp_uninit(struct roardsp_filter * filter); int roardsp_highp_calc32(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_highp_calc16(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_highp_calc8 (struct roardsp_filter * filter, void * data, size_t samples); int roardsp_highp_ctl (struct roardsp_filter * filter, int cmd, void * data); int roardsp_highp_reset (struct roardsp_filter * filter, int what); #endif int roardsp_amp_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); int roardsp_amp_uninit(struct roardsp_filter * filter); int roardsp_amp_calc32(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_amp_calc16(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_amp_calc8 (struct roardsp_filter * filter, void * data, size_t samples); int roardsp_amp_ctl (struct roardsp_filter * filter, int cmd, void * data); int roardsp_amp_reset (struct roardsp_filter * filter, int what); int roardsp_add_calc32(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_add_calc16(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_add_calc8 (struct roardsp_filter * filter, void * data, size_t samples); int roardsp_add_reset (struct roardsp_filter * filter, int what); int roardsp_quantify_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); int roardsp_quantify_uninit(struct roardsp_filter * filter); int roardsp_quantify_calc32(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_quantify_calc16(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_quantify_calc8 (struct roardsp_filter * filter, void * data, size_t samples); int roardsp_quantify_ctl (struct roardsp_filter * filter, int cmd, void * data); int roardsp_quantify_reset (struct roardsp_filter * filter, int what); int roardsp_clip_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); int roardsp_clip_uninit(struct roardsp_filter * filter); int roardsp_clip_calc8 (struct roardsp_filter * filter, void * data, size_t samples); int roardsp_clip_calc16(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_clip_calc32(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_clip_ctl (struct roardsp_filter * filter, int cmd, void * data); int roardsp_clip_reset (struct roardsp_filter * filter, int what); int roardsp_downmix_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); int roardsp_downmix_calc162(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_downmix_ctl (struct roardsp_filter * filter, int cmd, void * data); int roardsp_downmix_reset (struct roardsp_filter * filter, int what); int roardsp_dcblock_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); int roardsp_dcblock_uninit (struct roardsp_filter * filter); int roardsp_dcblock_calc16 (struct roardsp_filter * filter, void * data, size_t samples); int roardsp_dcblock_reset (struct roardsp_filter * filter, int what); int roardsp_swap_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); int roardsp_swap_uninit (struct roardsp_filter * filter); int roardsp_swap_calc322(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_swap_calc162(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_swap_calc82 (struct roardsp_filter * filter, void * data, size_t samples); int roardsp_swap_ctl (struct roardsp_filter * filter, int cmd, void * data); int roardsp_swap_reset (struct roardsp_filter * filter, int what); int roardsp_agc_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); int roardsp_agc_uninit (struct roardsp_filter * filter); int roardsp_agc_ctl (struct roardsp_filter * filter, int cmd, void * data); int roardsp_agc_reset (struct roardsp_filter * filter, int what); #ifdef _SPEEX_TYPES_H #define ROAR_HAVE_SPEEX_FILTER int roardsp_speex_prep_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); int roardsp_speex_prep_uninit (struct roardsp_filter * filter); int roardsp_speex_prep_calc161(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_speex_prep_ctl (struct roardsp_filter * filter, int cmd, void * data); int roardsp_speex_prep_reset (struct roardsp_filter * filter, int what); #endif #ifdef ROAR_HAVE_LIBM int roardsp_responsecurve_init (struct roardsp_filter * filter, struct roar_stream * stream, int id); int roardsp_responsecurve_uninit(struct roardsp_filter * filter); int roardsp_responsecurve_calc32(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_responsecurve_calc16(struct roardsp_filter * filter, void * data, size_t samples); int roardsp_responsecurve_calc8 (struct roardsp_filter * filter, void * data, size_t samples); int roardsp_responsecurve_ctl (struct roardsp_filter * filter, int cmd, void * data); int roardsp_responsecurve_reset (struct roardsp_filter * filter, int what); #endif #endif //ll