From d962ed33f6b5fe3040cfbd798f63ab9aa36d1f9e Mon Sep 17 00:00:00 2001 From: Hans-Christoph Steiner Date: Thu, 25 May 2006 16:40:19 +0000 Subject: renamed files to match their class names svn path=/trunk/externals/creb/; revision=5127 --- modules/eadsr~.c | 174 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 174 insertions(+) create mode 100644 modules/eadsr~.c (limited to 'modules/eadsr~.c') diff --git a/modules/eadsr~.c b/modules/eadsr~.c new file mode 100644 index 0000000..8111223 --- /dev/null +++ b/modules/eadsr~.c @@ -0,0 +1,174 @@ +/* + * eadsr.c - exponential attack decay sustain release envelope + * Copyright (c) 2000-2003 by Tom Schouten + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include +#include +#include "extlib_util.h" + +typedef struct eadsrctl +{ + t_float c_attack; + t_float c_decay; + t_float c_sustain; + t_float c_release; + t_float c_state; + t_float c_target; +} t_eadsrctl; + +typedef struct eadsr +{ + t_object x_obj; + t_float x_sr; + t_eadsrctl x_ctl; +} t_eadsr; + +void eadsr_attack(t_eadsr *x, t_floatarg f) +{ + x->x_ctl.c_attack = milliseconds_2_one_minus_realpole(f); +} + +void eadsr_decay(t_eadsr *x, t_floatarg f) +{ + x->x_ctl.c_decay = milliseconds_2_one_minus_realpole(f); +} + +void eadsr_sustain(t_eadsr *x, t_floatarg f) +{ + if (f>ENVELOPE_MAX) f = ENVELOPE_MAX; + if (fx_ctl.c_sustain = f; +} + +void eadsr_release(t_eadsr *x, t_floatarg f) +{ + x->x_ctl.c_release = milliseconds_2_one_minus_realpole(f); + +} + +void eadsr_start(t_eadsr *x) +{ + x->x_ctl.c_target = 1; + x->x_ctl.c_state = 0.0f; + +} + +void eadsr_stop(t_eadsr *x) +{ + x->x_ctl.c_target = 0; + +} + +void eadsr_float(t_eadsr *x, t_floatarg f) +{ + if (f == 0.0f) eadsr_stop(x); + else eadsr_start(x); +} + +static t_int *eadsr_perform(t_int *w) +{ + t_float *out = (float *)(w[3]); + t_eadsrctl *ctl = (t_eadsrctl *)(w[1]); + t_float attack = ctl->c_attack; + t_float decay = ctl->c_decay; + t_float sustain = ctl->c_sustain; + t_float release = ctl->c_release; + t_float state = ctl->c_state; + t_float target = ctl->c_target; + t_int n = (t_int)(w[2]); + + t_int i; + + + for (i = 0; i < n; i++){ + if (target == 1.0f){ + /* attack */ + *out++ = state; + state += attack*(1 - state); + target = (state > ENVELOPE_MAX) ? sustain : 1.0f; + } + else if (target == 0.0f){ + /* release */ + *out++ = state; + state -= release*state; + } + else{ + /* decay */ + *out++ = state; + state -= decay*(state-sustain); + } + } + + /* save state */ + ctl->c_state = IS_DENORMAL(state) ? 0 : state; + ctl->c_target = target; + return (w+4); +} + +static void eadsr_dsp(t_eadsr *x, t_signal **sp) +{ + x->x_sr = sp[0]->s_sr; + dsp_add(eadsr_perform, 3, &x->x_ctl, sp[0]->s_n, sp[0]->s_vec); + +} +void eadsr_free(void) +{ + +} + +t_class *eadsr_class; + +void *eadsr_new(t_floatarg attack, t_floatarg decay, t_floatarg sustain, t_floatarg release) +{ + t_eadsr *x = (t_eadsr *)pd_new(eadsr_class); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("attack")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("decay")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("sustain")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("release")); + outlet_new(&x->x_obj, gensym("signal")); + + x->x_ctl.c_state = 0; + x->x_ctl.c_target = 0; + eadsr_attack(x, attack); + eadsr_decay(x, decay); + eadsr_sustain(x, sustain); + eadsr_release(x, release); + + + return (void *)x; +} + +void eadsr_tilde_setup(void) +{ + //post("eadsr~ v0.1"); + eadsr_class = class_new(gensym("eadsr~"), (t_newmethod)eadsr_new, + (t_method)eadsr_free, sizeof(t_eadsr), 0, A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, 0); + class_addmethod(eadsr_class, (t_method)eadsr_float, gensym("float"), A_FLOAT, 0); + class_addmethod(eadsr_class, (t_method)eadsr_start, gensym("start"), 0); + class_addmethod(eadsr_class, (t_method)eadsr_start, gensym("bang"), 0); + class_addmethod(eadsr_class, (t_method)eadsr_stop, gensym("stop"), 0); + class_addmethod(eadsr_class, (t_method)eadsr_dsp, gensym("dsp"), 0); + class_addmethod(eadsr_class, (t_method)eadsr_attack, gensym("attack"), A_FLOAT, 0); + class_addmethod(eadsr_class, (t_method)eadsr_decay, gensym("decay"), A_FLOAT, 0); + class_addmethod(eadsr_class, (t_method)eadsr_sustain, gensym("sustain"), A_FLOAT, 0); + class_addmethod(eadsr_class, (t_method)eadsr_release, gensym("release"), A_FLOAT, 0); + + +} + -- cgit v1.2.1