3 * a puredata wrapper for aubio pitch detection functions
5 * Thanks to Johannes M Zmolnig for writing the excellent HOWTO:
6 * http://iem.kug.ac.at/pd/externals-HOWTO/
11 #include <aubio/aubio.h>
14 char aubiopitch_version[] = "aubiopitch~ version 0.1";
16 static t_class *aubiopitch_tilde_class;
18 void aubiopitch_tilde_setup (void);
20 typedef struct _aubiopitch_tilde
25 t_int pos; /*frames%dspblocksize*/
34 static t_int *aubiopitch_tilde_perform(t_int *w)
36 t_aubiopitch_tilde *x = (t_aubiopitch_tilde *)(w[1]);
37 t_sample *in = (t_sample *)(w[2]);
41 /* write input to datanew */
42 fvec_write_sample(x->vec, in[j], 0, x->pos);
44 if (x->pos == x->hopsize-1) {
46 aubio_pitch_do(x->o,x->vec, x->pitchvec);
47 outlet_float(x->pitch, x->pitchvec->data[0][0]);
48 /* end of block loop */
49 x->pos = -1; /* so it will be zero next j loop */
56 static void aubiopitch_tilde_dsp(t_aubiopitch_tilde *x, t_signal **sp)
58 dsp_add(aubiopitch_tilde_perform, 3, x, sp[0]->s_vec, sp[0]->s_n);
61 static void aubiopitch_tilde_debug(t_aubiopitch_tilde *x)
63 post("aubiopitch~ bufsize:\t%d", x->bufsize);
64 post("aubiopitch~ hopsize:\t%d", x->hopsize);
65 post("aubiopitch~ threshold:\t%f", x->threshold);
66 post("aubiopitch~ audio in:\t%f", x->vec->data[0][0]);
69 //static void *aubiopitch_tilde_new (t_floatarg f)
70 static void *aubiopitch_tilde_new (t_symbol * s)
72 t_aubiopitch_tilde *x =
73 (t_aubiopitch_tilde *)pd_new(aubiopitch_tilde_class);
76 x->hopsize = x->bufsize / 2;
78 //FIXME: get the real samplerate
79 x->o = new_aubio_pitch(s->s_name, x->bufsize,
80 x->hopsize, 1, 44100.);
81 aubio_pitch_set_tolerance (x->o, 0.7);
82 x->vec = (fvec_t *)new_fvec(x->hopsize,1);
83 x->pitchvec = (fvec_t *)new_fvec(1,1);
85 //floatinlet_new (&x->x_obj, &x->threshold);
86 x->pitch = outlet_new (&x->x_obj, &s_float);
88 post(aubiopitch_version);
92 static void *aubiopitch_tilde_del(t_aubiopitch_tilde *x)
94 del_aubio_pitch(x->o);
96 del_fvec(x->pitchvec);
100 void aubiopitch_tilde_setup (void)
102 aubiopitch_tilde_class = class_new (gensym ("aubiopitch~"),
103 (t_newmethod)aubiopitch_tilde_new,
104 (t_method)aubiopitch_tilde_del,
105 sizeof (t_aubiopitch_tilde),
106 CLASS_DEFAULT, A_DEFSYMBOL, 0);
107 class_addmethod(aubiopitch_tilde_class,
108 (t_method)aubiopitch_tilde_dsp,
110 class_addmethod(aubiopitch_tilde_class,
111 (t_method)aubiopitch_tilde_debug,
113 CLASS_MAINSIGNALIN(aubiopitch_tilde_class,
114 t_aubiopitch_tilde, threshold);