src/aubiopitch~.c

   1 /**
   2  *
   3  * a puredata wrapper for aubio pitch detection functions
   4  *
   5  * Thanks to Johannes M Zmolnig for writing the excellent HOWTO:
   6  *       http://iem.kug.ac.at/pd/externals-HOWTO/
   7  *
   8  * */
   9
  10 #include <m_pd.h>
  11 #include <aubio/aubio.h>
  12 #include <string.h>
  13
  14 char aubiopitch_version[] = "aubiopitch~ version " PACKAGE_VERSION;
  15
  16 static t_class *aubiopitch_tilde_class;
  17
  18 void aubiopitch_tilde_setup (void);
  19
  20 typedef struct _aubiopitch_tilde
  21 {
  22   t_object x_obj;
  23   t_float tolerance;
  24   t_int pos; /*frames%dspblocksize*/
  25   t_int bufsize;
  26   t_int hopsize;
  27   char_t *method;
  28   aubio_pitch_t *o;
  29   fvec_t *vec;
  30   fvec_t *pitchvec;
  31   t_outlet *pitch;
  32 } t_aubiopitch_tilde;
  33
  34 static t_int *aubiopitch_tilde_perform(t_int *w)
  35 {
  36   t_aubiopitch_tilde *x = (t_aubiopitch_tilde *)(w[1]);
  37   t_sample *in          = (t_sample *)(w[2]);
  38   int n                 = (int)(w[3]);
  39   int j;
  40   for (j=0;j<n;j++) {
  41     /* write input to datanew */
  42     fvec_set_sample(x->vec, in[j], x->pos);
  43     /*time for fft*/
  44     if (x->pos == x->hopsize-1) {
  45       /* block loop */
  46       aubio_pitch_do(x->o, x->vec, x->pitchvec);
  47       outlet_float(x->pitch, x->pitchvec->data[0]);
  48       /* end of block loop */
  49       x->pos = -1; /* so it will be zero next j loop */
  50     }
  51     x->pos++;
  52   }
  53   return (w+4);
  54 }
  55
  56 static void aubiopitch_tilde_dsp(t_aubiopitch_tilde *x, t_signal **sp)
  57 {
  58   dsp_add(aubiopitch_tilde_perform, 3, x, sp[0]->s_vec, sp[0]->s_n);
  59 }
  60
  61 static void aubiopitch_tilde_tolerance(t_aubiopitch_tilde *x, t_floatarg a)
  62 {
  63   if (a > 0) {
  64     x->tolerance = a;
  65     aubio_pitch_set_tolerance(x->o, x->tolerance);
  66   } else {
  67     post("aubiopitch~ tolerance set to %.2f",
  68         aubio_pitch_get_tolerance(x->o));
  69   }
  70 }
  71
  72 static void aubiopitch_tilde_debug(t_aubiopitch_tilde *x)
  73 {
  74   post(aubiopitch_version);
  75   post("aubiopitch~ method:\t%s", x->method);
  76   post("aubiopitch~ bufsize:\t%d", x->bufsize);
  77   post("aubiopitch~ hopsize:\t%d", x->hopsize);
  78   post("aubiopitch~ tolerance:\t%f", aubio_pitch_get_tolerance(x->o));
  79 }
  80
  81 static void *aubiopitch_tilde_new (t_symbol * s, int argc, t_atom *argv)
  82 {
  83
  84   t_aubiopitch_tilde *x = (t_aubiopitch_tilde *)pd_new(aubiopitch_tilde_class);
  85
  86   x->method = "default";
  87   x->bufsize = 2048;
  88   x->hopsize = x->bufsize / 2;
  89
  90   if (argc >= 2) {
  91     if (argv[1].a_type == A_FLOAT) {
  92       x->bufsize = (uint_t)(argv[1].a_w.w_float);
  93     }
  94     argc--;
  95   }
  96
  97   x->hopsize = x->bufsize / 2;
  98
  99   if (argc == 2) {
 100     if (argv[2].a_type == A_FLOAT) {
 101       x->hopsize = (uint_t)(argv[2].a_w.w_float);
 102     }
 103     argc--;
 104   }
 105
 106   if (argc == 1) {
 107     x->method = argv[0].a_w.w_symbol->s_name;
 108   }
 109
 110   x->o = new_aubio_pitch(x->method, x->bufsize, x->hopsize,
 111       (uint_t)sys_getsr());
 112
 113   if (x->o == NULL) return NULL;
 114
 115   x->vec = (fvec_t *)new_fvec(x->hopsize);
 116   x->pitchvec = (fvec_t *)new_fvec(1);
 117
 118   x->pitch = outlet_new (&x->x_obj, &s_float);
 119
 120   return (void *)x;
 121 }
 122
 123 void aubiopitch_tilde_del(t_aubiopitch_tilde *x)
 124 {
 125   outlet_free(x->pitch);
 126   del_aubio_pitch(x->o);
 127   del_fvec(x->vec);
 128   del_fvec(x->pitchvec);
 129 }
 130
 131 void aubiopitch_tilde_setup (void)
 132 {
 133   aubiopitch_tilde_class = class_new (gensym ("aubiopitch~"),
 134       (t_newmethod)aubiopitch_tilde_new,
 135       (t_method)aubiopitch_tilde_del,
 136       sizeof (t_aubiopitch_tilde),
 137       CLASS_DEFAULT, A_GIMME, 0);
 138   class_addmethod(aubiopitch_tilde_class,
 139       (t_method)aubiopitch_tilde_dsp,
 140       gensym("dsp"), 0);
 141   class_addmethod(aubiopitch_tilde_class,
 142       (t_method)aubiopitch_tilde_tolerance,
 143       gensym("tolerance"), A_DEFFLOAT, 0);
 144   class_addmethod(aubiopitch_tilde_class,
 145       (t_method)aubiopitch_tilde_tolerance,
 146       gensym("tol"), A_DEFFLOAT, 0);
 147   class_addmethod(aubiopitch_tilde_class,
 148       (t_method)aubiopitch_tilde_debug,
 149       gensym("debug"), 0);
 150   CLASS_MAINSIGNALIN(aubiopitch_tilde_class,
 151       t_aubiopitch_tilde, tolerance);
 152 }