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 --- framescore~/framescore~.c | 101 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 101 insertions(+) create mode 100644 framescore~/framescore~.c (limited to 'framescore~/framescore~.c') diff --git a/framescore~/framescore~.c b/framescore~/framescore~.c new file mode 100644 index 0000000..71a6d39 --- /dev/null +++ b/framescore~/framescore~.c @@ -0,0 +1,101 @@ +/* + * framescore~ : Weighted block comparison. + * 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 *framescore_tilde_class; + +typedef struct _framescore_tilde +{ + t_object x_obj; + t_float f; + t_float f_max, f_win, f_accum; + t_outlet *f_score; +} t_framescore_tilde; + +t_int *framescore_tilde_perform(t_int *w) +{ + t_framescore_tilde *x = (t_framescore_tilde *)(w[1]); + t_sample *in1 = (t_sample *)(w[2]); + t_sample *in2 = (t_sample *)(w[3]); + int n = (int)(w[4]); + float vector1; + float vector2; + x->f_accum = 0; + float block_accum = 0; + x->f_max = 0; + float score = 0; + float avg = 0; + int block = n; + x->f_win = x->f_win > 0 ? x->f_win : 0.01; + + while (n--) + { + vector1 = (*in1++); + vector2 = (*in2++); + vector1 = vector1 > 0 ? vector1 : 0 - vector1; + vector2 = vector2 > 0 ? vector2 : 0 - vector2; + block_accum += vector2; + x->f_max = vector2 > x->f_max ? vector2 : x->f_max; + float diff = vector1 > vector2 ? vector1 - vector2 : vector2 - vector1; + x->f_accum += (1/((diff/x->f_win)+1)) * vector2; + } + score = x->f_accum / x->f_max; + block_accum /= x->f_max; + avg = score / block_accum; + outlet_float(x->f_score, avg); + + return(w+5); +} + +void framescore_tilde_dsp(t_framescore_tilde *x, t_signal **sp) +{ + dsp_add(framescore_tilde_perform, 4, x, + sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); +} + +void *framescore_tilde_new(t_floatarg f) +{ + t_framescore_tilde *x = (t_framescore_tilde *)pd_new(framescore_tilde_class); + + x->f_win = f; + + inlet_new (&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal); + floatinlet_new (&x->x_obj, &x->f_win); + x->f_score = outlet_new(&x->x_obj, gensym("float")); + + return (void *)x; +} + + +void framescore_tilde_setup(void) +{ + framescore_tilde_class = class_new(gensym("framescore~"), + (t_newmethod)framescore_tilde_new, + 0, sizeof(t_framescore_tilde), + CLASS_DEFAULT, A_DEFFLOAT, 0); + + post("|+++++++++++framescore~+++++++++++++|"); + post("|+++++weighted block comparison+++++|"); + post("|+++edward+++++++kelly+++++++2005+++|"); + + class_addmethod(framescore_tilde_class, (t_method)framescore_tilde_dsp, + gensym("dsp"), 0); + class_sethelpsymbol(framescore_tilde_class, gensym("help-framescore~")); + CLASS_MAINSIGNALIN(framescore_tilde_class, t_framescore_tilde, f); +} -- cgit v1.2.1