diff options
Diffstat (limited to 'modules/eadsr.c')
| -rw-r--r-- | modules/eadsr.c | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/modules/eadsr.c b/modules/eadsr.c deleted file mode 100644 index 8111223..0000000 --- a/modules/eadsr.c +++ /dev/null @@ -1,174 +0,0 @@ -/* - * 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 <m_pd.h> -#include <math.h> -#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 (f<ENVELOPE_MIN) f = ENVELOPE_MIN; - - x->x_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); - - -} - |