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/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
iem_t3_lib written by Gerhard Eckel, Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2006 */
#include "m_pd.h"
#include "iemlib.h"
/* -------------------------- t3_line~ ------------------------------ */
static t_class *t3_line_tilde_class;
typedef struct _t3_line_tilde
{
t_object x_obj;
t_clock *x_clock;
t_float *x_beg;
double x_cur_val;
double x_dst_val;
double x_inlet_val;
double x_inc64;
double x_inc;
double x_ms2samps;
double x_ticks2ms;
double x_inlet_time;
double x_dst_time;
int x_cur_samps;
int x_dur_samps;
int x_n;
int x_t3_bang_samps;
int x_transient;
} t_t3_line_tilde;
static void t3_line_tilde_nontransient(t_float *vec, t_t3_line_tilde *x, int n)
{
int cur_samps = x->x_cur_samps, i;
double inc = x->x_inc;
double cur_val = x->x_cur_val;
if(cur_samps)
{
if(cur_samps > n)
{
x->x_cur_samps -= n;
while(n--)
{
cur_val += inc;
*vec++ = (t_float)cur_val;
}
x->x_cur_val += x->x_inc64;
}
else if(cur_samps == n)
{
x->x_cur_samps = 0;
while(n--)
{
cur_val += inc;
*vec++ = (t_float)cur_val;
}
x->x_cur_val = x->x_dst_val;
}
else
{
for(i=0; i<cur_samps; i++)
{
cur_val += inc;
*vec++ = (t_float)cur_val;
}
x->x_cur_val = cur_val = x->x_dst_val;
for(i=cur_samps; i<n; i++)
*vec++ = (t_float)cur_val;
x->x_cur_samps = 0;
}
}
else
{
while(n--)
*vec++ = (t_float)cur_val;
}
}
static t_int *t3_line_tilde_perform(t_int *w)
{
t_float *out = (t_float *)(w[1]);
t_t3_line_tilde *x = (t_t3_line_tilde *)(w[2]);
int n = (int)(w[3]);
if(x->x_transient)
{
t_float *trans = x->x_beg;
while(n--)
*out++ = *trans++;
x->x_transient = 0;
}
else
t3_line_tilde_nontransient(out, x, n);
return(w+4);
}
static void t3_line_tilde_tick(t_t3_line_tilde *x)
{
t_float *trans = x->x_beg;
int n = x->x_n, t3_bang_samps, cur_samps, i;
double inc, cur_val;
if(!x->x_transient)
t3_line_tilde_nontransient(trans, x, n);
t3_bang_samps = x->x_t3_bang_samps;
x->x_dst_val = x->x_inlet_val;
if(x->x_inlet_time <= 0.0)
{
x->x_inlet_time = 0.0;
x->x_dst_time = 0.0;
x->x_dur_samps = 0;
x->x_cur_samps = 0;
cur_val = x->x_cur_val = x->x_dst_val;
for(i=t3_bang_samps; i<n; i++)
trans[i] = (t_float)cur_val;
}
else
{
int diff, end;
x->x_dst_time = x->x_inlet_time;
x->x_inlet_time = 0.0;
cur_samps = (int)(x->x_dst_time * x->x_ms2samps);
if(!cur_samps)
cur_samps = 1;
x->x_dur_samps = cur_samps;
x->x_cur_samps = cur_samps;
cur_val = x->x_cur_val = (double)trans[t3_bang_samps];
inc = x->x_inc = (x->x_dst_val - cur_val)/(double)cur_samps;
x->x_inc64 = (double)x->x_n * inc;
diff = n - t3_bang_samps;
if(cur_samps > diff)
{
for(i=t3_bang_samps; i<n; i++)
{
cur_val += inc;
trans[i] = (t_float)cur_val;
}
x->x_cur_val += (double)diff * inc;
x->x_cur_samps -= diff;
}
else if(cur_samps == diff)
{
for(i=t3_bang_samps; i<n; i++)
{
cur_val += inc;
trans[i] = (t_float)cur_val;
}
x->x_cur_val = x->x_dst_val;
x->x_cur_samps = 0;
}
else
{
end = t3_bang_samps + cur_samps;
for(i=t3_bang_samps; i<end; i++)
{
cur_val += inc;
trans[i] = (t_float)cur_val;
}
cur_val = x->x_cur_val = x->x_dst_val;
x->x_cur_samps = 0;
for(i=end; i<n; i++)
trans[i] = (t_float)cur_val;
}
}
x->x_transient = 1;
}
static void t3_line_tilde_list(t_t3_line_tilde *x, t_symbol *s, int ac, t_atom *av)
{
if((ac >= 2)&&IS_A_FLOAT(av,0)&&IS_A_FLOAT(av,1))
{
int t3_bang_samps, ticks;
double time;
x->x_inlet_val = (double)atom_getfloatarg(1, ac, av);
t3_bang_samps = (int)((t_float)atom_getfloatarg(0, ac, av)*x->x_ms2samps);
if(t3_bang_samps < 0)
t3_bang_samps = 0;
ticks = t3_bang_samps / x->x_n;
x->x_t3_bang_samps = t3_bang_samps - x->x_n * ticks;
if((ac >= 3)&&IS_A_FLOAT(av,2))
{
time = (double)atom_getfloatarg(2, ac, av);
if(time < 0.0)
time = 0.0;
x->x_inlet_time = time;
}
if(ticks < 1)
t3_line_tilde_tick(x);
else
clock_delay(x->x_clock, (double)ticks * x->x_ticks2ms);
}
}
static void t3_line_tilde_ft1(t_t3_line_tilde *x, t_float time)
{
if(time < 0.0)
time = 0.0;
x->x_inlet_time = (double)time;
}
static void t3_line_tilde_stop(t_t3_line_tilde *x)
{
clock_unset(x->x_clock);
x->x_cur_samps = x->x_dur_samps = x->x_transient = 0;
x->x_inc = x->x_inc64 = x->x_inlet_time = x->x_dst_time = 0.0;
}
static void t3_line_tilde_dsp(t_t3_line_tilde *x, t_signal **sp)
{
int i;
t_float val, *trans;
if(sp[0]->s_n > x->x_n)
{
freebytes(x->x_beg, x->x_n*sizeof(t_float));
x->x_n = (int)sp[0]->s_n;
x->x_beg = (t_float *)getbytes(x->x_n*sizeof(t_float));
}
else
x->x_n = (int)sp[0]->s_n;
i = x->x_n;
val = x->x_cur_val;
trans = x->x_beg;
while(i--)
*trans++ = val;
x->x_ms2samps = 0.001*(double)sp[0]->s_sr;
x->x_ticks2ms = (double)x->x_n / x->x_ms2samps;
dsp_add(t3_line_tilde_perform, 3, sp[0]->s_vec, x, sp[0]->s_n);
}
static void t3_line_tilde_free(t_t3_line_tilde *x)
{
if(x->x_beg)
freebytes(x->x_beg, x->x_n*sizeof(t_float));
clock_free(x->x_clock);
}
static void *t3_line_tilde_new(t_floatarg init_val)
{
t_t3_line_tilde *x = (t_t3_line_tilde *)pd_new(t3_line_tilde_class);
int i;
x->x_n = (int)sys_getblksize();
x->x_beg = (t_float *)getbytes(x->x_n*sizeof(t_float));
x->x_inlet_val = x->x_cur_val = x->x_dst_val = init_val;
x->x_t3_bang_samps = x->x_cur_samps = x->x_dur_samps = x->x_transient = 0;
x->x_inlet_time = x->x_dst_time = 0.0;
x->x_inc64 = x->x_inc = 0.0;
x->x_ms2samps = 0.001 * (double)sys_getsr();
x->x_ticks2ms = (double)x->x_n / x->x_ms2samps;
x->x_clock = clock_new(x, (t_method)t3_line_tilde_tick);
outlet_new(&x->x_obj, &s_signal);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("ft1"));
return (x);
}
void t3_line_tilde_setup(void)
{
t3_line_tilde_class = class_new(gensym("t3_line~"), (t_newmethod)t3_line_tilde_new,
(t_method)t3_line_tilde_free, sizeof(t_t3_line_tilde), 0, A_DEFFLOAT, 0);
class_addmethod(t3_line_tilde_class, (t_method)t3_line_tilde_dsp, gensym("dsp"), 0);
class_addmethod(t3_line_tilde_class, (t_method)t3_line_tilde_stop, gensym("stop"), 0);
class_addmethod(t3_line_tilde_class, (t_method)t3_line_tilde_ft1, gensym("ft1"), A_FLOAT, 0);
class_addlist(t3_line_tilde_class, (t_method)t3_line_tilde_list);
// class_sethelpsymbol(t3_line_tilde_class, gensym("iemhelp/help-t3_line~"));
}
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