rockbox/apps/plugins/pdbox/PDa/intern/line~.c
Wincent Balin 66cc643402 pdbox: Corrected inclusion of m_fixed.h .
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26551 a1c6a512-1295-4272-9138-f99709370657
2010-06-04 18:37:55 +00:00

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);
}