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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_dp written by IOhannes m zmoelnig, Thomas Musil, Copyright (c) IEM KUG Graz Austria 1999 - 2007 */
/* double precision library */
#include "m_pd.h"
#include "iemlib.h"
#include "iem_dp.h"
/* -------------------------- vline~~ ------------------------------ */
/* based on miller's vline~ which is part of pd */
static t_class *vline_tilde_tilde_class;
typedef struct _vseg_tt
{
double s_targettime;
double s_starttime;
double s_target;
struct _vseg_tt *s_next;
} t_vseg_tt;
typedef struct _vline_tilde_tilde
{
t_object x_obj;
double x_value;
double x_inc;
double x_referencetime;
double x_samppermsec;
double x_msecpersamp;
double x_targettime;
double x_target;
t_float x_inlet2_fine_target;
t_float x_inlet3_coarse_ramp_duration;
t_float x_inlet4_fine_ramp_duration;
t_float x_inlet5_coarse_delay;
t_float x_inlet6_fine_delay;
t_vseg_tt *x_list;
} t_vline_tilde_tilde;
static t_int *vline_tilde_tilde_perform(t_int *w)
{
t_vline_tilde_tilde *x = (t_vline_tilde_tilde *)(w[1]);
t_float *out_float_cast = (t_float *)(w[2]);
t_float *out_residual = (t_float *)(w[3]);
t_float f_val;
int n = (int)(w[4]), i;
double d_val = x->x_value;
double inc = x->x_inc;
double msecpersamp = x->x_msecpersamp;
double samppermsec = x->x_samppermsec;
double timenow = clock_gettimesince(x->x_referencetime) - (double)n * msecpersamp;
t_vseg_tt *seg_list = x->x_list;
for(i = 0; i < n; i++)
{
double timenext = timenow + msecpersamp;
checknext_tt:
if(seg_list)
{
/* has starttime elapsed? If so update value and increment */
if(seg_list->s_starttime < timenext)
{
if(x->x_targettime <= timenext)
d_val = x->x_target, inc = 0;
/* if zero-length segment bash output value */
if(seg_list->s_targettime <= seg_list->s_starttime)
{
d_val = seg_list->s_target;
inc = 0;
}
else
{
double incpermsec = (seg_list->s_target - d_val)/(seg_list->s_targettime - seg_list->s_starttime);
d_val += incpermsec * (timenext - seg_list->s_starttime);
inc = incpermsec * msecpersamp;
}
x->x_inc = inc;
x->x_target = seg_list->s_target;
x->x_targettime = seg_list->s_targettime;
x->x_list = seg_list->s_next;
t_freebytes(seg_list, sizeof(*seg_list));
seg_list = x->x_list;
goto checknext_tt;
}
}
if(x->x_targettime <= timenext)
{
d_val = x->x_target;
inc = x->x_inc = 0;
x->x_targettime = 1e20;
}
f_val = iem_dp_cast_to_float(d_val);
*out_residual++ = iem_dp_calc_residual(d_val, f_val);
*out_float_cast++ = f_val;
d_val += inc;
timenow = timenext;
}
x->x_value = d_val;
return (w+5);
}
static void vline_tilde_tilde_stop(t_vline_tilde_tilde *x)
{
t_vseg_tt *s1, *s2;
for (s1 = x->x_list; s1; s1 = s2)
s2 = s1->s_next, t_freebytes(s1, sizeof(*s1));
x->x_list = 0;
x->x_inc = 0;
x->x_inlet2_fine_target = x->x_inlet3_coarse_ramp_duration = 0;
x->x_inlet4_fine_ramp_duration = x->x_inlet5_coarse_delay = x->x_inlet6_fine_delay = 0;
x->x_target = x->x_value;
x->x_targettime = 1e20;
}
static void vline_tilde_tilde_float(t_vline_tilde_tilde *x, t_float inlet1_coarse_target) /* coarse target value */
{
double timenow = clock_gettimesince(x->x_referencetime);
double inlet12_target = iem_dp_calc_sum(inlet1_coarse_target, x->x_inlet2_fine_target);
double inlet34_ramp_duration = iem_dp_calc_sum(x->x_inlet3_coarse_ramp_duration, x->x_inlet4_fine_ramp_duration);
double inlet56_delay = iem_dp_calc_sum(x->x_inlet5_coarse_delay, x->x_inlet6_fine_delay);
double starttime = timenow + inlet56_delay;
t_vseg_tt *s1, *s2, *deletefrom = 0, *snew;
if(inlet34_ramp_duration < 0)
inlet34_ramp_duration = 0;
/* if (PD_BIGORSMALL(inlet12_target))
inlet12_target = 0; */
/* negative delay input means stop and jump immediately to new value */
if (inlet56_delay < 0)
{
x->x_value = inlet12_target;
vline_tilde_tilde_stop(x);
return;
}
snew = (t_vseg_tt *)t_getbytes(sizeof(*snew));
/* check if we supplant the first item in the list. We supplant
an item by having an earlier starttime, or an equal starttime unless
the equal one was instantaneous and the new one isn't (in which case
we'll do a jump-and-slide starting at that time.) */
if (!x->x_list || x->x_list->s_starttime > starttime ||
(x->x_list->s_starttime == starttime &&
(x->x_list->s_targettime > x->x_list->s_starttime || inlet34_ramp_duration <= 0)))
{
deletefrom = x->x_list;
x->x_list = snew;
}
else
{
for (s1 = x->x_list; s2 = s1->s_next; s1 = s2)
{
if (s2->s_starttime > starttime ||
(s2->s_starttime == starttime &&
(s2->s_targettime > s2->s_starttime || inlet34_ramp_duration <= 0)))
{
deletefrom = s2;
s1->s_next = snew;
goto vl_didit_tt;
}
}
s1->s_next = snew;
deletefrom = 0;
vl_didit_tt: ;
}
while (deletefrom)
{
s1 = deletefrom->s_next;
t_freebytes(deletefrom, sizeof(*deletefrom));
deletefrom = s1;
}
snew->s_next = 0;
snew->s_target = inlet12_target;
snew->s_starttime = starttime;
snew->s_targettime = starttime + inlet34_ramp_duration;
x->x_inlet3_coarse_ramp_duration = x->x_inlet4_fine_ramp_duration = 0;
x->x_inlet5_coarse_delay = x->x_inlet6_fine_delay = 0;
}
static void vline_tilde_tilde_dsp(t_vline_tilde_tilde *x, t_signal **sp)
{
dsp_add(vline_tilde_tilde_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
x->x_samppermsec = ((double)(sp[0]->s_sr)) / 1000.0;
x->x_msecpersamp = ((double)1000.0) / sp[0]->s_sr;
}
static void *vline_tilde_tilde_new(t_floatarg init_val)
{
t_vline_tilde_tilde *x = (t_vline_tilde_tilde *)pd_new(vline_tilde_tilde_class);
outlet_new(&x->x_obj, gensym("signal"));
outlet_new(&x->x_obj, gensym("signal"));
floatinlet_new(&x->x_obj, &x->x_inlet2_fine_target);
floatinlet_new(&x->x_obj, &x->x_inlet3_coarse_ramp_duration);
floatinlet_new(&x->x_obj, &x->x_inlet4_fine_ramp_duration);
floatinlet_new(&x->x_obj, &x->x_inlet5_coarse_delay);
floatinlet_new(&x->x_obj, &x->x_inlet6_fine_delay);
x->x_inlet2_fine_target = x->x_inlet3_coarse_ramp_duration = 0;
x->x_inlet4_fine_ramp_duration = x->x_inlet5_coarse_delay = x->x_inlet6_fine_delay = 0;
x->x_value = x->x_inc = 0;
x->x_referencetime = clock_getlogicaltime();
x->x_list = 0;
x->x_samppermsec = 0;
x->x_targettime = 1e20;
return (x);
}
void vline_tilde_tilde_setup(void)
{
vline_tilde_tilde_class = class_new(gensym("vline~~"), (t_newmethod)vline_tilde_tilde_new,
(t_method)vline_tilde_tilde_stop, sizeof(t_vline_tilde_tilde), 0, 0);
class_addfloat(vline_tilde_tilde_class, (t_method)vline_tilde_tilde_float);
class_addmethod(vline_tilde_tilde_class, (t_method)vline_tilde_tilde_dsp, gensym("dsp"), 0);
class_addmethod(vline_tilde_tilde_class, (t_method)vline_tilde_tilde_stop, gensym("stop"), 0);
}
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