src/aubioquiet~.c

   1 /**
   2  *
   3  * a puredata wrapper for aubioquiet
   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
  13 char aubioquiet_version[] = "aubioquiet~ version " PACKAGE_VERSION;
  14
  15 static t_class *aubioquiet_tilde_class;
  16
  17 void aubioquiet_tilde_setup (void);
  18
  19 typedef struct _aubioquiet_tilde
  20 {
  21         t_object x_obj;
  22         t_float threshold;
  23         t_int pos; /*frames%dspblocksize*/
  24         t_int bufsize;
  25         t_int hopsize;
  26         t_int wassilence;
  27         t_int issilence;
  28         fvec_t *vec;
  29         t_outlet *quietbang;
  30         t_outlet *noisybang;
  31 } t_aubioquiet_tilde;
  32
  33 static t_int *aubioquiet_tilde_perform(t_int *w)
  34 {
  35         t_aubioquiet_tilde *x = (t_aubioquiet_tilde *)(w[1]);
  36         t_sample *in          = (t_sample *)(w[2]);
  37         int n                 = (int)(w[3]);
  38         int j;
  39         for (j=0;j<n;j++) {
  40                 /* write input to datanew */
  41                 fvec_set_sample(x->vec, in[j], x->pos);
  42                 /*time for fft*/
  43                 if (x->pos == x->hopsize-1) {
  44                         /* block loop */
  45                         if (aubio_silence_detection(x->vec, x->threshold)==1) {
  46                                 if (x->wassilence==1) {
  47                                         x->issilence = 1;
  48                                 } else {
  49                                         x->issilence = 2;
  50                                         outlet_bang(x->quietbang);
  51                                 }
  52                                 x->wassilence=1;
  53                         } else {
  54                                 if (x->wassilence<=0) {
  55                                         x->issilence = 0;
  56                                 } else {
  57                                         x->issilence = -1;
  58                                         outlet_bang(x->noisybang);
  59                                 }
  60                                 x->wassilence=0;
  61                         }
  62                         /* end of block loop */
  63                         x->pos = -1; /* so it will be zero next j loop */
  64                 }
  65                 x->pos++;
  66         }
  67         return (w+4);
  68 }
  69
  70 static void aubioquiet_tilde_dsp(t_aubioquiet_tilde *x, t_signal **sp)
  71 {
  72         dsp_add(aubioquiet_tilde_perform, 3, x, sp[0]->s_vec, sp[0]->s_n);
  73 }
  74
  75 static void aubioquiet_tilde_debug(t_aubioquiet_tilde *x)
  76 {
  77         post(aubioquiet_version);
  78         post("aubioquiet~ bufsize:\t%d", x->bufsize);
  79         post("aubioquiet~ hopsize:\t%d", x->hopsize);
  80         post("aubioquiet~ threshold:\t%f", x->threshold);
  81         post("aubioquiet~ audio in:\t%f", x->vec->data[0]);
  82 }
  83
  84 static void *aubioquiet_tilde_new (t_floatarg f)
  85 {
  86         t_aubioquiet_tilde *x =
  87                 (t_aubioquiet_tilde *)pd_new(aubioquiet_tilde_class);
  88
  89         x->threshold = (f < -1000.) ? -70 : (f >= 0.) ? -70. : f;
  90         x->bufsize   = 1024;
  91         x->hopsize   = x->bufsize / 2;
  92
  93         x->vec = (fvec_t *)new_fvec(x->hopsize);
  94         x->wassilence = 1;
  95
  96         floatinlet_new (&x->x_obj, &x->threshold);
  97         x->quietbang = outlet_new (&x->x_obj, &s_bang);
  98         x->noisybang = outlet_new (&x->x_obj, &s_bang);
  99         return (void *)x;
 100 }
 101
 102 void aubioquiet_tilde_setup (void)
 103 {
 104         aubioquiet_tilde_class = class_new (gensym ("aubioquiet~"),
 105                         (t_newmethod)aubioquiet_tilde_new,
 106                         0, sizeof (t_aubioquiet_tilde),
 107                         CLASS_DEFAULT, A_DEFFLOAT, 0);
 108         class_addmethod(aubioquiet_tilde_class,
 109                         (t_method)aubioquiet_tilde_dsp,
 110                         gensym("dsp"), 0);
 111         class_addmethod(aubioquiet_tilde_class,
 112                         (t_method)aubioquiet_tilde_debug,
 113                         gensym("debug"), 0);
 114         CLASS_MAINSIGNALIN(aubioquiet_tilde_class,
 115                         t_aubioquiet_tilde, threshold);
 116 }