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/* (C) Guenter Geiger <geiger@epy.co.at> */
#include <m_pd.h>
//#define DEBUG
/* ------------------------ envgen~ ----------------------------- */
#define NONE 0
#define ATTACK 1
#define SUSTAIN -1
#define STATES 100
#include "envgen.h"
#include "w_envgen.h"
static t_class *envgen_class;
#define OUT_LIST(x,nr,a) \
outlet_list(x->x_obj.ob_outlet,&s_list,nr,(t_atom*)&a);\
if (x->s_sym != &s_ && x->s_sym->s_thing) pd_list(x->s_sym->s_thing, &s_list, nr, (t_atom*)&a);
char dumpy[2000];
/* initialize envelope with argument vector */
#include <stdio.h>
/*
envgen crashes frequently when reallocating memory ....
I really don't know why, it crashes during resizebytes,
which means it is unable to realloc() the memory ?????
the pointer seems to be ok, I don't know what else could
cause the problem. for the moment we prevent from reallocating
by setting the STATES variable to 100 */
void envgen_resize(t_envgen* x,int ns)
{
if (ns > x->args) {
int newargs = ns*sizeof(t_float);
x->duration = resizebytes(x->duration,x->args*sizeof(t_float),newargs);
x->finalvalues = resizebytes(x->finalvalues,x->args*sizeof(t_float),newargs);
x->args = ns;
}
}
void envgen_totaldur(t_envgen* x,t_float dur)
{
int i;
float f = dur/x->duration[x->last_state];
if (dur < 10) {
post("envgen: duration too small %f",dur);
return;
}
for (i=1;i<=x->last_state;i++)
x->duration[i]*=f;
}
static void envgen_dump(t_envgen* e)
{
t_atom argv[50];
int argc= 0;
t_atom* a = argv;
int i;
SETFLOAT(a,e->finalvalues[0]);argc++;
for (i=1;i <= e->last_state;i++) {
SETFLOAT(argv+argc,e->duration[i] - e->duration[i-1]);
argc++;
SETFLOAT(argv+argc,e->finalvalues[i]);
argc++;
}
outlet_list(e->out2,&s_list,argc,(t_atom*)&argv);
}
void envgen_init(t_envgen *x,int argc,t_atom* argv)
{
t_float* dur;
t_float* val;
t_float tdur = 0;
if (!argc) return;
x->duration[0] = 0;
x->last_state = argc>>1;
envgen_resize(x,argc>>1);
dur = x->duration;
val = x->finalvalues;
if (argc) {
*val = atom_getfloat(argv++);
*dur = 0.0;
}
dur++;val++;argc--;
for (;argc > 0;argc--) {
tdur += atom_getfloat(argv++);
#ifdef DEBUG
post("dur =%f",tdur);
#endif
*dur++ = tdur;
argc--;
if (argc > 0)
*val++ = atom_getfloat(argv++);
else
*val++ = 0;
#ifdef DEBUG
post("val =%f",*(val-1));
#endif
}
}
void envgen_list(t_envgen *x,t_symbol* s, int argc,t_atom* argv)
{
envgen_init(x,argc,argv);
if (glist_isvisible(x->w.glist)) {
envgen_drawme(x, x->w.glist, 0);
}
}
void envgen_setresize(t_envgen *x, t_floatarg f)
{
x->resizeable = f;
}
void envgen_float(t_envgen *x, t_floatarg f)
{
int state = 0;
float val;
while (x->duration[state] < f && state < x->last_state) state++;
if (state == 0 || f >= x->duration[x->last_state]) {
val = x->finalvalues[state]*(x->max-x->min);
outlet_float(x->x_obj.ob_outlet,f);
if (x->s_sym != &s_) pd_float(x->s_sym->s_thing, f);
return;
}
val = x->finalvalues[state-1] +
(f - x->duration[state-1])*
(x->finalvalues[state] - x->finalvalues[state-1])/
(x->duration[state] - x->duration[state-1]);
val *= (x->max - x->min);
outlet_float(x->x_obj.ob_outlet,val);
if (x->s_sym != &s_) pd_float(x->s_sym->s_thing, val);
}
void envgen_bang(t_envgen *x)
{
t_atom a[2];
SETFLOAT(a,x->finalvalues[NONE]);
SETFLOAT(a+1,0);
OUT_LIST(x,2,a);
/* we don't force the first value anymore, so the first value
is actually with what we have left off at the end ...
this reduces clicks
*/
x->x_state = ATTACK;
x->x_val = x->finalvalues[NONE];
SETFLOAT(a,x->finalvalues[x->x_state]*(x->max-x->min));
SETFLOAT(a+1,x->duration[x->x_state]);
OUT_LIST(x,2,a);
clock_delay(x->x_clock,x->duration[x->x_state]);
}
void envgen_release(t_envgen* x) {
t_atom a[2];
float del = x->duration[x->x_state] - x->duration[x->x_state-1];
if (x->x_state <= x->sustain_state) {
x->x_state = x->sustain_state+1; /* skip sustain state */
clock_delay(x->x_clock,del);
SETFLOAT(a,x->finalvalues[x->x_state]*(x->max-x->min));
SETFLOAT(a+1,del);
OUT_LIST(x,2,a);
}
}
static void envgen_sustain(t_envgen *x, t_floatarg f)
{
if (f > 0 && f < x->last_state)
x->sustain_state = f;
else
pd_error(x,"sustain value not betweem 0 and %f, ignoring message", x->last_state);
}
static void envgen_tick(t_envgen* x)
{
t_atom a[2];
x->x_state++;
if (x->x_state <= x->last_state && x->x_state != x->sustain_state) {
float del = x->duration[x->x_state] - x->duration[x->x_state-1];
clock_delay(x->x_clock,del);
SETFLOAT(a,x->finalvalues[x->x_state]*(x->max-x->min));
SETFLOAT(a+1,del);
OUT_LIST(x,2,a);
}
// else
// clock_unset(x->x_clock);
}
static void envgen_freeze(t_envgen* x, t_floatarg f)
{
x->x_freeze = f;
}
static void bindsym(t_pd* x,t_symbol* o,t_symbol* s)
{
if (o != &s_) pd_unbind(x,o);
o = s;
pd_bind(x,s);
}
static void *envgen_new(t_symbol *s,int argc,t_atom* argv)
{
t_envgen *x = (t_envgen *)pd_new(envgen_class);
x->args = STATES;
x->finalvalues = getbytes( x->args*sizeof(t_float));
x->duration = getbytes( x->args*sizeof(t_float));
#ifdef DEBUG
post("finalvalues %x",x->finalvalues);
#endif
/* widget */
x->w.grabbed = 0;
x->resizing = 0;
x->resizeable = 1;
x->w.glist = (t_glist*) canvas_getcurrent();
x->w.width = 200;
if (argc) x->w.width = atom_getfloat(argv++),argc--;
x->w.height = 140;
if (argc) x->w.height = atom_getfloat(argv++),argc--;
x->max = 1.0;
if (argc) x->max = atom_getfloat(argv++),argc--;
x->min = 0.0;
if (argc) x->min = atom_getfloat(argv++),argc--;
x->r_sym = &s_;
if (argc) {
t_symbol* n;
n = atom_getsymbol(argv++);
bindsym(&x->x_obj.ob_pd,x->r_sym,n);
x->r_sym = n;
argc--;
}
// post("recv %s",x->r_sym->s_name);
x->s_sym = &s_;
if (argc) x->s_sym = atom_getsymbol(argv++),argc--;
// post("send %s",x->s_sym->s_name);
if (argc)
envgen_init(x,argc,argv);
else {
t_atom a[5];
SETFLOAT(a,0);
SETFLOAT(a+1,50);
SETFLOAT(a+2,1);
SETFLOAT(a+3,50);
SETFLOAT(a+4,0);
envgen_init(x,5,a);
}
x->x_val = 0.0;
x->x_state = NONE;
x->sustain_state = SUSTAIN;
x->x_freeze = 0;
outlet_new(&x->x_obj, &s_float);
x->out2 = outlet_new(&x->x_obj, &s_float);
x->x_clock = clock_new(x, (t_method) envgen_tick);
return (x);
}
void envgen_motion(t_envgen *x, t_floatarg dx, t_floatarg dy);
void envgen_click(t_envgen *x,
t_floatarg xpos, t_floatarg ypos, t_floatarg shift, t_floatarg ctrl,
t_floatarg alt);
void envgen_key(t_envgen *x, t_floatarg f);
t_widgetbehavior envgen_widgetbehavior;
void envgen_setup(void)
{
envgen_class = class_new(gensym("envgen"), (t_newmethod)envgen_new, 0,
sizeof(t_envgen), 0,A_GIMME,0);
class_addcreator((t_newmethod)envgen_new,gensym("envgen~"),A_GIMME,0);
class_addfloat(envgen_class, envgen_float);
class_addbang(envgen_class,envgen_bang);
class_addlist(envgen_class,envgen_list);
class_addmethod(envgen_class,(t_method)envgen_sustain,gensym("sustain"),A_FLOAT,A_NULL);
class_addmethod(envgen_class, (t_method)envgen_motion, gensym("motion"),
A_FLOAT, A_FLOAT, 0);
class_addmethod(envgen_class, (t_method)envgen_key, gensym("key"),
A_FLOAT, 0);
class_addmethod(envgen_class,(t_method)envgen_totaldur,gensym("duration"),A_FLOAT,NULL);
class_addmethod(envgen_class,(t_method)envgen_freeze,gensym("freeze"),A_FLOAT,NULL);
class_addmethod(envgen_class,(t_method)envgen_setresize,gensym("resize"),A_FLOAT,A_NULL);
class_addmethod(envgen_class,(t_method)envgen_release,gensym("release"),A_NULL);
envgen_widgetbehavior.w_getrectfn = envgen_getrect;
envgen_widgetbehavior.w_displacefn = envgen_displace;
envgen_widgetbehavior.w_selectfn = envgen_select;
envgen_widgetbehavior.w_activatefn = envgen_activate;
envgen_widgetbehavior.w_deletefn = envgen_delete;
envgen_widgetbehavior.w_visfn = envgen_vis;
envgen_widgetbehavior.w_clickfn = envgen_newclick;
#if PD_MINOR_VERSION < 37
envgen_widgetbehavior.w_propertiesfn = NULL;
envgen_widgetbehavior.w_savefn = envgen_save;
#endif
class_setwidget(envgen_class,&envgen_widgetbehavior);
#if PD_MINOR_VERSION >= 37
class_setsavefn(envgen_class,&envgen_save);
#endif
class_addmethod(envgen_class,(t_method)envgen_dump,gensym("dump"),A_NULL);
}
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