66cc643402
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26551 a1c6a512-1295-4272-9138-f99709370657
102 lines
2.4 KiB
C
102 lines
2.4 KiB
C
#include "../src/m_pd.h"
|
|
#include "../src/m_fixed.h"
|
|
|
|
static t_class *line_class;
|
|
|
|
typedef struct _line
|
|
{
|
|
t_object x_obj;
|
|
t_sample x_target;
|
|
t_sample x_value;
|
|
t_sample x_biginc;
|
|
t_sample x_inc;
|
|
t_sample x_1overn;
|
|
t_sample x_msectodsptick;
|
|
t_floatarg x_inletvalue;
|
|
t_floatarg x_inletwas;
|
|
int x_ticksleft;
|
|
int x_retarget;
|
|
} t_line;
|
|
|
|
static t_int *line_perform(t_int *w)
|
|
{
|
|
t_line *x = (t_line *)(w[1]);
|
|
t_sample *out = (t_sample *)(w[2]);
|
|
int n = (int)(w[3]);
|
|
#ifndef ROCKBOX
|
|
t_sample f = x->x_value;
|
|
#endif
|
|
|
|
if (x->x_retarget)
|
|
{
|
|
int nticks = mult(ftofix(x->x_inletwas),x->x_msectodsptick);
|
|
if (!nticks) nticks = itofix(1);
|
|
x->x_ticksleft = fixtoi(nticks);
|
|
x->x_biginc = (x->x_target - x->x_value);
|
|
x->x_biginc = idiv(x->x_biginc,nticks);
|
|
x->x_inc = mult(x->x_1overn, x->x_biginc);
|
|
x->x_retarget = 0;
|
|
}
|
|
if (x->x_ticksleft)
|
|
{
|
|
t_sample f = x->x_value;
|
|
while (n--) *out++ = f, f += x->x_inc;
|
|
x->x_value += x->x_biginc;
|
|
x->x_ticksleft--;
|
|
}
|
|
else
|
|
{
|
|
x->x_value = x->x_target;
|
|
while (n--) *out++ = x->x_value;
|
|
}
|
|
return (w+4);
|
|
}
|
|
|
|
static void line_float(t_line *x, t_float f)
|
|
{
|
|
if (x->x_inletvalue <= 0)
|
|
{
|
|
x->x_target = x->x_value = ftofix(f);
|
|
x->x_ticksleft = x->x_retarget = 0;
|
|
}
|
|
else
|
|
{
|
|
x->x_target = ftofix(f);
|
|
x->x_retarget = 1;
|
|
x->x_inletwas = x->x_inletvalue;
|
|
x->x_inletvalue = 0;
|
|
}
|
|
}
|
|
|
|
static void line_stop(t_line *x)
|
|
{
|
|
x->x_target = x->x_value;
|
|
x->x_ticksleft = x->x_retarget = 0;
|
|
}
|
|
|
|
static void line_dsp(t_line *x, t_signal **sp)
|
|
{
|
|
dsp_add(line_perform, 3, x, sp[0]->s_vec, sp[0]->s_n);
|
|
x->x_1overn = ftofix(1)/sp[0]->s_n;
|
|
x->x_msectodsptick = idiv(sp[0]->s_sr, (1000 * sp[0]->s_n));
|
|
}
|
|
|
|
static void *line_new(void)
|
|
{
|
|
t_line *x = (t_line *)pd_new(line_class);
|
|
outlet_new(&x->x_obj, gensym("signal"));
|
|
floatinlet_new(&x->x_obj, &x->x_inletvalue);
|
|
x->x_ticksleft = x->x_retarget = 0;
|
|
x->x_value = x->x_target = x->x_inletvalue = x->x_inletwas = 0;
|
|
return (x);
|
|
}
|
|
|
|
void line_tilde_setup(void)
|
|
{
|
|
line_class = class_new(gensym("line~"), line_new, 0,
|
|
sizeof(t_line), 0, 0);
|
|
class_addfloat(line_class, (t_method)line_float);
|
|
class_addmethod(line_class, (t_method)line_dsp, gensym("dsp"), 0);
|
|
class_addmethod(line_class, (t_method)line_stop, gensym("stop"), 0);
|
|
}
|
|
|