diff options
Diffstat (limited to 'randomblock~.c')
| -rw-r--r-- | randomblock~.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/randomblock~.c b/randomblock~.c new file mode 100644 index 0000000..34d2411 --- /dev/null +++ b/randomblock~.c @@ -0,0 +1,115 @@ +/* ------------------------ randomblock~ -------------------------------------- */ +/* */ +/* Generates a random signal block */ +/* Written by Yves Degoyon (ydegoyon@free.fr). */ +/* */ +/* 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. */ +/* */ +/* ---------------------------------------------------------------------------- */ + + + +#include <sys/types.h> +#include <string.h> +#include <stdio.h> +#include <errno.h> +#include <stdlib.h> +#include <fcntl.h> +#include <sys/stat.h> +#ifndef __APPLE__ +#include <malloc.h> +#endif +#include <ctype.h> +#include <unistd.h> +#include <time.h> +#include <sys/time.h> + +#include "m_pd.h" /* standard pd stuff */ + +static char *randomblock_version = "randomblock~: generates a random audio block : author : ydegoyon@free.fr"; + +static t_class *randomblock_class; + +typedef struct _randomblock +{ + t_object x_obj; + t_int x_limit; +} t_randomblock; + + /* clean up */ +static void randomblock_free(t_randomblock *x) +{ +} + +static void *randomblock_new(t_float flimit) +{ + t_randomblock *x = (t_randomblock *)pd_new(randomblock_class); + outlet_new(&x->x_obj, &s_signal); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("limit")); + if ( flimit <= 0 || flimit > RAND_MAX ) { + post( "randomblock~: wrong creation argument" ); + return NULL; + } + x->x_limit = (int) flimit; + return(x); +} + +static void *randomblock_limit(t_randomblock* x, t_float flimit) +{ + if ( flimit < 0 || flimit > RAND_MAX ) { + post( "randomblock~: wrong random limit" ); + return; + } else { + x->x_limit=(int)flimit; + } +} + +static t_int *randomblock_perform(t_int *w) +{ + t_float *out = (t_float*) w[1]; + int n = (int)(w[2]); + t_randomblock *x = (t_randomblock*) w[3]; + + int rvalue = rand(); + // post("random value : %d", rvalue ); + rvalue = rvalue%(x->x_limit-n); + // post("modulated by %d : %d", (x->x_limit-n), rvalue ); + if ( rvalue < 0 ) rvalue=0; + + while (n--) { + *(out)++=(float)rvalue++; + } + + return (w+4); +} + +static void randomblock_dsp(t_randomblock *x, t_signal **sp) +{ + dsp_add( randomblock_perform, 3, sp[0]->s_vec, sp[0]->s_n, x ) ; +} + +void randomblock_tilde_setup(void) +{ + post(randomblock_version); + randomblock_class = class_new(gensym("randomblock~"), (t_newmethod)randomblock_new, + (t_method)randomblock_free, + sizeof(t_randomblock), 0, A_DEFFLOAT, 0); + class_addmethod( randomblock_class, (t_method)randomblock_dsp, gensym("dsp"), 0); + class_addmethod( randomblock_class, (t_method)randomblock_limit, gensym("limit"), A_FLOAT, 0); +} |