source: plugins/puredata/aubiotss~.c @ 61316a6

/**
 *
 * a puredata wrapper for aubio tss detection functions 
 *
 * Thanks to Johannes M Zmolnig for writing the excellent HOWTO:
 *       http://iem.kug.ac.at/pd/externals-HOWTO/  
 *
 * */

#include <m_pd.h>
#include <aubio.h>

char aubiotss_version[] = "aubiotss~ version 0.1";

static t_class *aubiotss_tilde_class;

void aubiotss_tilde_setup (void);

typedef struct _aubiotss_tilde 
{
        t_object x_obj;
        t_float thres;  
        t_float alpha;  
        t_float beta;   
        t_int pos; /*frames%dspblocksize*/
        t_int bufsize;
        t_int hopsize;
        aubio_pvoc_t * pv;
        aubio_pvoc_t * pvt;
        aubio_pvoc_t * pvs;
        aubio_tss_t * tss;
        fvec_t *vec;
        cvec_t *fftgrain;
        cvec_t *cstead;
        cvec_t *ctrans;
        fvec_t *trans;
        fvec_t *stead;
} t_aubiotss_tilde;

static t_int *aubiotss_tilde_perform(t_int *w) 
{
        t_aubiotss_tilde *x = (t_aubiotss_tilde *)(w[1]);
        t_sample *in          = (t_sample *)(w[2]);
        t_sample *outtrans    = (t_sample *)(w[3]);
        t_sample *outstead    = (t_sample *)(w[4]);
        int n                 = (int)(w[5]);
        int j;
        for (j=0;j<n;j++) {
                /* write input to datanew */
                fvec_write_sample(x->vec, in[j], 0, x->pos);
                /*time for fft*/
                if (x->pos == x->hopsize-1) {         
                        /* block loop */
                        /* test for silence */
                        //if (!aubio_silence_detection(x->vec, x->threshold2))
                        aubio_pvoc_do  (x->pv,  x->vec, x->fftgrain);
                        aubio_tss_set_thres( x->tss, x->thres);
                        aubio_tss_do   (x->tss, x->fftgrain, x->ctrans, x->cstead);
                        aubio_pvoc_rdo (x->pvt, x->ctrans, x->trans);
                        aubio_pvoc_rdo (x->pvs, x->cstead, x->stead);
                        //}
                        /* end of block loop */
                        x->pos = -1; /* so it will be zero next j loop */
                }
                x->pos++;
                *outtrans++ = x->trans->data[0][x->pos];
                *outstead++ = x->stead->data[0][x->pos];
        }
        return (w+6);
}

static void aubiotss_tilde_dsp(t_aubiotss_tilde *x, t_signal **sp)
{
        dsp_add(aubiotss_tilde_perform, 5, x, 
                        sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec, sp[0]->s_n);
}

static void aubiotss_tilde_debug(t_aubiotss_tilde *x)
{
        post("aubiotss~ bufsize:\t%d", x->bufsize);
        post("aubiotss~ hopsize:\t%d", x->hopsize);
        post("aubiotss~ threshold:\t%f", x->thres);
        post("aubiotss~ audio in:\t%f", x->vec->data[0][0]);
        post("aubiotss~ audio out:\t%f", x->stead->data[0][0]);
}

static void *aubiotss_tilde_new (t_floatarg f)
        //, t_floatarg bufsize)
{
        t_aubiotss_tilde *x = 
                (t_aubiotss_tilde *)pd_new(aubiotss_tilde_class);

        x->thres    = (f < 1e-5) ? 0.01 : (f > 1.) ? 1. : f;
        x->bufsize  = 1024; //(bufsize < 64) ? 1024: (bufsize > 16385) ? 16385: bufsize;
        x->hopsize  = x->bufsize / 4;
        x->alpha    = 3.;
        x->beta     = 4.;

        x->vec = (fvec_t *)new_fvec(x->hopsize,1);

        x->fftgrain  = (cvec_t *)new_cvec(x->bufsize,1);
        x->ctrans = (cvec_t *)new_cvec(x->bufsize,1);
        x->cstead = (cvec_t *)new_cvec(x->bufsize,1);

        x->trans = (fvec_t *)new_fvec(x->hopsize,1);
        x->stead = (fvec_t *)new_fvec(x->hopsize,1);

        x->pv  = (aubio_pvoc_t *)new_aubio_pvoc(x->bufsize, x->hopsize, 1);
        x->pvt = (aubio_pvoc_t *)new_aubio_pvoc(x->bufsize, x->hopsize, 1);
        x->pvs = (aubio_pvoc_t *)new_aubio_pvoc(x->bufsize, x->hopsize, 1);

        x->tss = (aubio_tss_t *)new_aubio_tss(x->thres, x->alpha, x->beta, 
                        x->bufsize, x->hopsize, 1);

        floatinlet_new (&x->x_obj, &x->thres);
        outlet_new(&x->x_obj, gensym("signal"));
        outlet_new(&x->x_obj, gensym("signal"));
        post(aubiotss_version);
        return (void *)x;
}

void aubiotss_tilde_setup (void)
{
        aubiotss_tilde_class = class_new (gensym ("aubiotss~"),
                        (t_newmethod)aubiotss_tilde_new,
                        0, sizeof (t_aubiotss_tilde),
                        CLASS_DEFAULT, A_DEFFLOAT, 0);
        class_addmethod(aubiotss_tilde_class, 
                        (t_method)aubiotss_tilde_dsp, 
                        gensym("dsp"), 0);
        class_addmethod(aubiotss_tilde_class, 
                        (t_method)aubiotss_tilde_debug,
                        gensym("debug"), 0);
        CLASS_MAINSIGNALIN(aubiotss_tilde_class, 
                        t_aubiotss_tilde, thres);
}