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/* Copyright (c) 2002 Yves Degoyon. */
/* For information on usage and redistribution, and for a DISCLAIMER OF ALL */
/* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
/* */
/* a header for filterbank~ which outputs frequency response */
/* for a range of filters */
/* */
/* The filter code is taken from Speech Filing System */
/* from Mark Huckvale, University College London */
/* */
/* This program is free software; you can redistribute it and/or */
/* modify it under the terms of the GNU General Public License */
/* as published by the Free Software Foundation; either version 2 */
/* of the License, or (at your option) any later version. */
/* */
/* See file LICENSE for further informations on licensing terms. */
/* */
/* This program 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 program; if not, write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* */
/* Based on PureData by Miller Puckette and others. */
/* */
/* Made while listening to : */
/* */
/* Twine -- Instrumentals */
/* Andy T -- Poetry */
/* ---------------------------------------------------------------------------- */
#ifndef __FILTERBANK_H
#define __FILTERBANK_H
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <math.h>
#include <ctype.h>
#include "m_pd.h"
#include "m_imp.h"
#include "g_canvas.h"
/* this code is borrowed from pd's object : bp~ */
typedef struct bpctl
{
float c_x1;
float c_x2;
float c_coef1;
float c_coef2;
float c_gain;
} t_bpctl;
typedef struct _filterbank_tilde
{
t_object x_obj;
t_glist *x_glist;
t_int x_samplerate; /* system sample rate */
t_int x_lowfreq; /* lower frequency of all filters */
t_int x_highfreq; /* higher frequency of all filters */
t_int x_nbfilters; /* number of filters */
t_outlet **x_outputs; /* outputs for frequency responses */
t_int x_nselected; /* index of item selected */
t_int x_width; /* graphical x size ( not setable ) */
t_int x_height; /* graphical y size ( not setable ) */
t_int x_selected; /* selection flag */
t_int x_allocate; /* allocation flag */
t_int *x_outmapping; /* output mapping array */
// bp~ section : borrowed from pd's d_filter.c
float x_sr;
float *x_freq;
float *x_q;
t_bpctl *x_cspace;
t_bpctl **x_ctl;
t_float x_f; /* classical float for signal input */
} t_filterbank_tilde;
#endif
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