diff options
Diffstat (limited to 'sigdelta.c')
-rw-r--r-- | sigdelta.c | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/sigdelta.c b/sigdelta.c deleted file mode 100644 index 9b627d9..0000000 --- a/sigdelta.c +++ /dev/null @@ -1,56 +0,0 @@ -#include "m_pd.h" -#include <math.h> -#ifdef NT -#pragma warning( disable : 4244 ) -#pragma warning( disable : 4305 ) -#endif - -/* ------------------------ delta~ ----------------------------- */ - -/* tilde object to take difference value. */ - -static t_class *delta_class; - -typedef struct _delta -{ - t_object x_obj; - t_sample x_last; -} t_delta; - -static t_int *delta_perform(t_int *w) -{ - t_delta *x = (t_delta *)(w[1]); - t_float *in = (t_float *)(w[2]); - t_float *out = (t_float *)(w[3]); - int n = (int)(w[4]); - while (n--) - { - float f = *(in++); - // *out++ = (f > 0 ? f : -f); - *out++ = (f > x->x_last ? fabs(f - x->x_last) : -fabs(f - x->x_last)); - x->x_last = f; - } - return (w+5); -} - -static void delta_dsp(t_delta *x, t_signal **sp) -{ - dsp_add(delta_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); -} - -static void *delta_new(void) -{ - t_delta *x = (t_delta *)pd_new(delta_class); - x->x_last = 0.; - outlet_new(&x->x_obj, gensym("signal")); - return (x); -} - -void delta_tilde_setup(void) -{ - delta_class = class_new(gensym("delta~"), (t_newmethod)delta_new, 0, - sizeof(t_delta), 0, A_DEFFLOAT, 0); - class_addmethod(delta_class, nullfn, gensym("signal"), 0); - class_addmethod(delta_class, (t_method)delta_dsp, gensym("dsp"), 0); - class_sethelpsymbol(delta_class, gensym("delta.pd")); -} |