From 091498cdc1fa5e152b117540cbe170e7b06d15ab Mon Sep 17 00:00:00 2001 From: Ed Kelly Date: Mon, 15 Aug 2005 10:05:21 +0000 Subject: This commit was generated by cvs2svn to compensate for changes in r3428, which included commits to RCS files with non-trunk default branches. svn path=/trunk/externals/ekext/; revision=3429 --- simile~/simile~.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 simile~/simile~.c (limited to 'simile~/simile~.c') diff --git a/simile~/simile~.c b/simile~/simile~.c new file mode 100644 index 0000000..a6bc562 --- /dev/null +++ b/simile~/simile~.c @@ -0,0 +1,84 @@ +/* + * simile~ : windowed similarity comparison for signals + * Copyright (C) 2005 edward kelly + * + * 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. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "m_pd.h" + +static t_class *simile_tilde_class; + +typedef struct _simile_tilde { + t_object x_obj; + t_sample f_win; + t_float x_dummy; + t_outlet *f_frame; +} t_simile_tilde; + +t_int *simile_tilde_perform(t_int *w) { + t_simile_tilde *x = (t_simile_tilde *)(w[1]); + t_sample *in1 = (t_sample *)(w[2]); + t_sample *in2 = (t_sample *)(w[3]); + t_sample *out = (t_sample *)(w[4]); + t_sample *sign = (t_sample *)(w[5]); + int n = (int)(w[6]); + + t_sample f_win = x->f_win > 0 ? x->f_win : 0.01; + t_float f_accum = 0; + while (n--) { + float i1=(*in1++); + float i2=(*in2++); + float win = x->f_win > 0 ? x->f_win : 0.001; + float min = i1 > i2 ? i1 - i2 : i2 - i1; + f_accum += *out++ = 1/((min/win)+1); + *sign++ = i1 >= i2 ? 1 : -1; + } + outlet_float(x->f_frame, f_accum); + return (w+7); +} + +void simile_tilde_dsp(t_simile_tilde *x, t_signal **sp) { + dsp_add(simile_tilde_perform, 6, x, + sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec, sp[3]->s_vec, sp[0]->s_n); +} + +void *simile_tilde_new(t_floatarg f) { + t_simile_tilde *x = (t_simile_tilde *)pd_new(simile_tilde_class); + + x->f_win = f > 0 ? f : 0.01; /* window defaults to 0.01 if no argument given */ + + inlet_new (&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal); + floatinlet_new (&x->x_obj, &x->f_win); + outlet_new(&x->x_obj, &s_signal); + outlet_new(&x->x_obj, &s_signal); + x->f_frame = outlet_new(&x->x_obj, gensym("float")); + return (void *)x; +} + +void simile_tilde_setup(void) { + simile_tilde_class = class_new(gensym("simile~"), + (t_newmethod)simile_tilde_new, + 0, sizeof(t_simile_tilde), + CLASS_DEFAULT, A_DEFFLOAT, 0); + + post("|~~~~~~~~~~~~&simile~&~~~~~~~~~~~~~~|"); + post("|~&weighted similarity measurement&~|"); + post("|~~&edward&~~~~~&kelly&~~~~~&2005&~~|"); + + class_sethelpsymbol(simile_tilde_class, gensym("help-simile~")); + class_addmethod(simile_tilde_class, + (t_method)simile_tilde_dsp, gensym("dsp"), 0); + CLASS_MAINSIGNALIN(simile_tilde_class, t_simile_tilde, x_dummy); +} -- cgit v1.2.1