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/* Copyright (c) 2002-2003 krzYszcz and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
#include <string.h>
#include "m_pd.h"
#define SUSTAIN_NPITCHES 128
typedef struct _sustain
{
t_object x_ob;
t_float x_velocity;
int x_switch;
unsigned char x_pitches[SUSTAIN_NPITCHES];
t_outlet *x_voutlet;
} t_sustain;
static t_class *sustain_class;
static void sustain_float(t_sustain *x, t_float f)
{
int pitch = (int)f;
if (pitch >= 0 && pitch < SUSTAIN_NPITCHES)
{
/* CHECKED a plain note-off accumulator */
if (x->x_velocity || !x->x_switch)
{
outlet_float(x->x_voutlet, x->x_velocity);
outlet_float(((t_object *)x)->ob_outlet, pitch);
}
else x->x_pitches[pitch]++;
}
}
static void sustain_bang(t_sustain *x)
{
int i;
unsigned char *pp;
for (i = 0, pp = x->x_pitches; i < SUSTAIN_NPITCHES; i++, pp++)
{
while (*pp)
{
outlet_float(x->x_voutlet, 0);
outlet_float(((t_object *)x)->ob_outlet, i);
(*pp)--;
}
}
}
static void sustain_clear(t_sustain *x)
{
memset(x->x_pitches, 0, sizeof(x->x_pitches));
}
static void sustain_ft2(t_sustain *x, t_floatarg f)
{
int newstate = ((int)f != 0);
if (x->x_switch && !newstate) sustain_bang(x);
x->x_switch = newstate;
}
static void *sustain_new(void)
{
t_sustain *x = (t_sustain *)pd_new(sustain_class);
x->x_velocity = 0;
x->x_switch = 0;
sustain_clear(x);
floatinlet_new((t_object *)x, &x->x_velocity);
inlet_new((t_object *)x, (t_pd *)x, &s_float, gensym("ft2"));
outlet_new((t_object *)x, &s_float);
x->x_voutlet = outlet_new((t_object *)x, &s_float);
return (x);
}
void sustain_setup(void)
{
sustain_class = class_new(gensym("sustain"),
(t_newmethod)sustain_new,
0, /* CHECKED: no flushout */
sizeof(t_sustain), 0, 0);
class_addfloat(sustain_class, sustain_float);
class_addbang(sustain_class, sustain_bang);
class_addmethod(sustain_class, (t_method)sustain_ft2,
gensym("ft2"), A_FLOAT, 0);
}
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