diff options
Diffstat (limited to 'pd/doc/6.externs/dspobj~.c')
-rw-r--r-- | pd/doc/6.externs/dspobj~.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/pd/doc/6.externs/dspobj~.c b/pd/doc/6.externs/dspobj~.c new file mode 100644 index 00000000..a8841f21 --- /dev/null +++ b/pd/doc/6.externs/dspobj~.c @@ -0,0 +1,49 @@ +#include "m_pd.h" +#ifdef NT +#pragma warning( disable : 4244 ) +#pragma warning( disable : 4305 ) +#endif + +/* ------------------------ dspobj~ ----------------------------- */ + +/* tilde object to take absolute value. */ + +static t_class *dspobj_class; + +typedef struct _dspobj +{ + t_object x_obj; +} t_dspobj; + +static t_int *dspobj_perform(t_int *w) +{ + t_float *in = (t_float *)(w[1]); + t_float *out = (t_float *)(w[2]); + int n = (int)(w[3]); + while (n--) + { + float f = *(in++); + *out++ = (f > 0 ? f : -f); + } + return (w+4); +} + +static void dspobj_dsp(t_dspobj *x, t_signal **sp) +{ + dsp_add(dspobj_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); +} + +static void *dspobj_new(void) +{ + t_dspobj *x = (t_dspobj *)pd_new(dspobj_class); + outlet_new(&x->x_obj, gensym("signal")); + return (x); +} + +void dspobj_tilde_setup(void) +{ + dspobj_class = class_new(gensym("dspobj~"), (t_newmethod)dspobj_new, 0, + sizeof(t_dspobj), 0, A_DEFFLOAT, 0); + class_addmethod(dspobj_class, nullfn, gensym("signal"), 0); + class_addmethod(dspobj_class, (t_method)dspobj_dsp, gensym("dsp"), 0); +} |