From 71b83fc040b848c98c5065d95ecbc72b0b4f8943 Mon Sep 17 00:00:00 2001 From: Hans-Christoph Steiner Date: Thu, 17 Jan 2013 22:54:00 +0000 Subject: merging maxlib v1.5.5 from branches/pd-extended/0.43 svn path=/trunk/externals/maxlib/; revision=16897 --- delta.c | 278 ++++++++++++++++++++++++++++++++-------------------------------- 1 file changed, 139 insertions(+), 139 deletions(-) (limited to 'delta.c') diff --git a/delta.c b/delta.c index 41e9b6e..f47e6a9 100644 --- a/delta.c +++ b/delta.c @@ -1,139 +1,139 @@ -/* ------------------------- delta ------------------------------------------ */ -/* */ -/* Claculate 1st or 2nd order difference. */ -/* Written by Olaf Matthes (olaf.matthes@gmx.de) */ -/* Inspired by code written by Trond Lossius. */ -/* Get source at http://www.akustische-kunst.org/puredata/maxlib/ */ -/* */ -/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -/* */ -/* Based on PureData by Miller Puckette and others. */ -/* */ -/* ---------------------------------------------------------------------------- */ - -#include "m_pd.h" -#include - -#define MAXSIZE 32 - -static char *version = "delta v0.1, written by Olaf Matthes "; - -typedef struct delta -{ - t_object x_ob; - t_outlet *x_out; /* result */ - t_int x_order; /* 1st or second order */ - t_int x_clearflag; - t_float x_delta; /* the result */ - - t_float x_prev; /* previous value */ - t_float x_prev2; /* value previous to previous value */ -} t_delta; - -static void delta_clear(t_delta *x) -{ - if(x->x_order == 2) - x->x_clearflag = 2; - else - x->x_clearflag = 1; - x->x_delta = 0; -} - -static void delta_bang(t_delta *x) -{ - outlet_float(x->x_out, x->x_delta); -} - -static void delta_float(t_delta *x, t_floatarg f) -{ - if(x->x_order != 2) /* first order */ - { - if(x->x_clearflag) - { - x->x_prev = f; - x->x_delta = 0; - x->x_clearflag = 0; - } - else - { - x->x_delta = f - x->x_prev; - x->x_prev = f; - } - } - else - { - switch(x->x_clearflag) - { - case 0: - x->x_delta = f - 2*x->x_prev + x->x_prev2; - x->x_prev2 = x->x_prev; - x->x_prev = f; - break; - case 1: - x->x_prev = f; - x->x_clearflag--; - break; - case 2: - x->x_prev2 = f; - x->x_clearflag--; - break; - } - } - delta_bang(x); -} - -static t_class *delta_class; - -static void *delta_new(t_floatarg f) -{ - int i; - - t_delta *x = (t_delta *)pd_new(delta_class); - x->x_out = outlet_new(&x->x_ob, gensym("float")); - - x->x_order = (int)f; - if(x->x_order == 2) - x->x_clearflag = 2; - else - x->x_clearflag = 1; - x->x_delta = 0; - - return (void *)x; -} - -#ifndef MAXLIB -void delta_setup(void) -{ - delta_class = class_new(gensym("delta"), (t_newmethod)delta_new, - 0, sizeof(t_delta), 0, A_DEFFLOAT, 0); -#else -void maxlib_delta_setup(void) -{ - delta_class = class_new(gensym("maxlib_delta"), (t_newmethod)delta_new, - 0, sizeof(t_delta), 0, A_DEFFLOAT, 0); -#endif - class_addfloat(delta_class, delta_float); - class_addbang(delta_class, (t_method)delta_bang); - class_addmethod(delta_class, (t_method)delta_clear, gensym("clear"), 0); - class_sethelpsymbol(delta_class, gensym("maxlib/delta-help.pd")); -#ifndef MAXLIB - - post(version); -#else - class_addcreator((t_newmethod)delta_new, gensym("delta"), A_DEFFLOAT, 0); - class_sethelpsymbol(delta_class, gensym("maxlib/delta-help.pd")); -#endif -} - +/* ------------------------- delta ------------------------------------------ */ +/* */ +/* Claculate 1st or 2nd order difference. */ +/* Written by Olaf Matthes (olaf.matthes@gmx.de) */ +/* Inspired by code written by Trond Lossius. */ +/* Get source at http://www.akustische-kunst.org/puredata/maxlib/ */ +/* */ +/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +/* */ +/* Based on PureData by Miller Puckette and others. */ +/* */ +/* ---------------------------------------------------------------------------- */ + +#include "m_pd.h" +#include + +#define MAXSIZE 32 + +static char *version = "delta v0.1, written by Olaf Matthes "; + +typedef struct delta +{ + t_object x_ob; + t_outlet *x_out; /* result */ + t_int x_order; /* 1st or second order */ + t_int x_clearflag; + t_float x_delta; /* the result */ + + t_float x_prev; /* previous value */ + t_float x_prev2; /* value previous to previous value */ +} t_delta; + +static void delta_clear(t_delta *x) +{ + if(x->x_order == 2) + x->x_clearflag = 2; + else + x->x_clearflag = 1; + x->x_delta = 0; +} + +static void delta_bang(t_delta *x) +{ + outlet_float(x->x_out, x->x_delta); +} + +static void delta_float(t_delta *x, t_floatarg f) +{ + if(x->x_order != 2) /* first order */ + { + if(x->x_clearflag) + { + x->x_prev = f; + x->x_delta = 0; + x->x_clearflag = 0; + } + else + { + x->x_delta = f - x->x_prev; + x->x_prev = f; + } + } + else + { + switch(x->x_clearflag) + { + case 0: + x->x_delta = f - 2*x->x_prev + x->x_prev2; + x->x_prev2 = x->x_prev; + x->x_prev = f; + break; + case 1: + x->x_prev = f; + x->x_clearflag--; + break; + case 2: + x->x_prev2 = f; + x->x_clearflag--; + break; + } + } + delta_bang(x); +} + +static t_class *delta_class; + +static void *delta_new(t_floatarg f) +{ + int i; + + t_delta *x = (t_delta *)pd_new(delta_class); + x->x_out = outlet_new(&x->x_ob, gensym("float")); + + x->x_order = (int)f; + if(x->x_order == 2) + x->x_clearflag = 2; + else + x->x_clearflag = 1; + x->x_delta = 0; + + return (void *)x; +} + +#ifndef MAXLIB +void delta_setup(void) +{ + delta_class = class_new(gensym("delta"), (t_newmethod)delta_new, + 0, sizeof(t_delta), 0, A_DEFFLOAT, 0); +#else +void maxlib_delta_setup(void) +{ + delta_class = class_new(gensym("maxlib_delta"), (t_newmethod)delta_new, + 0, sizeof(t_delta), 0, A_DEFFLOAT, 0); +#endif + class_addfloat(delta_class, delta_float); + class_addbang(delta_class, (t_method)delta_bang); + class_addmethod(delta_class, (t_method)delta_clear, gensym("clear"), 0); + class_sethelpsymbol(delta_class, gensym("maxlib/delta-help.pd")); +#ifndef MAXLIB + + logpost(NULL, 4, version); +#else + class_addcreator((t_newmethod)delta_new, gensym("delta"), A_DEFFLOAT, 0); + class_sethelpsymbol(delta_class, gensym("maxlib/delta-help.pd")); +#endif +} + -- cgit v1.2.1