added files straight from Yves' sources

svn path=/trunk/externals/unauthorized/; revision=857

1 files changed, 84 insertions, 0 deletions

diff --git a/filterbank~/filterbank~.h b/filterbank~/filterbank~.h
new file mode 100644
index 0000000..70e35ab
--- /dev/null
+++ b/filterbank~/filterbank~.h
@@ -0,0 +1,84 @@
+/* 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_imp.h"
+#include "g_canvas.h"
+#include "t_tk.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