source: examples/testforclam.c @ aa3c8b7

/*
   Copyright (C) 2003 Paul Brossier

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <getopt.h>
#include <unistd.h>

#include "aubio.h"      

#include "utils.h"


const char * output_filename = NULL;
const char * input_filename = NULL;

const char * onset_filename = "/usr/share/sounds/aubio/woodblock.aiff";

int verbose = 0;
int usejack = 0;

int aubio_process(float **input, float **output, int nframes);

/* settings */

/* energy,specdiff,hfc,complexdomain,phase */
aubio_onsetdetection_type type_onset;
smpl_t threshold = 0.1;

smpl_t threshold2 = -80.;

int buffer_size = 1024;
int overlap_size = 512;
int channels = 1;
int samplerate = 44100;

/* global objects */
aubio_pvoc_t * pv;

fvec_t * ibuf;
fvec_t * obuf;
cvec_t * fftgrain;

fvec_t * woodblock;

aubio_onsetdetection_t *o;
fvec_t *onset;
//fvec_t *onset_keep;
//fvec_t *onset_proc;
int post = 5;
int pre  = 1;

int isonset = 0;

aubio_pickpeak_t * parms;

int aubio_process(float **input, float **output, int nframes) {
        unsigned int i;         /*channels*/
        unsigned int j;         /*frames*/   
        unsigned int pos = 0;   /*frames%dspblocksize*/
        //unsigned int ons = 0; /*onset counter*/
        for (j=0;j<nframes;j++) {

                for (i=0;i<channels;i++) { 
                        /* write input to datanew */
                        fvec_write_sample(ibuf, input[i][j], i, pos);
                        /* put synthnew in output */
                        output[i][j] = fvec_read_sample(obuf, i, pos);
                }
                /*time for fft*/
                if (pos == overlap_size-1) {                    
                        aubio_pvoc_do (pv,ibuf, fftgrain);
                        aubio_onsetdetection(o,fftgrain, onset);
                        fprintf(stderr,"onsetfunc: %f\n",onset->data[0][0]);
                        isonset = aubio_peakpick_pimrt(onset,parms);
                        if (isonset) {
                                /* test for silence */
                                if (aubio_silence_detection(ibuf, threshold2)==1)
                                        isonset=0; 
                                else
                                        for (pos = 0; pos < overlap_size; pos++)
                                                obuf->data[0][pos] = 
                                                        woodblock->data[0][pos];
                        } else {
                                for (pos = 0; pos < overlap_size; pos++)
                                        obuf->data[0][pos] = 0.;
                        }
                        //aubio_pvoc_rdo(pv,fftgrain, obuf);
                        pos = -1; /* so it will be zero next j loop */
                }
                pos++;
        }
        return 1;
}

int main (int argc, char **argv) {  
        int frames;
        //int pos;

        aubio_file_t * file = NULL;
        aubio_file_t * fileout = NULL;

        aubio_file_t * onsetfile = new_file_ro(onset_filename);
        parse_args(argc, argv);

        if(!usejack) 
        {
                debug("Opening  files ...\n");
                file = new_file_ro (input_filename);
                file_info(file);
                channels = aubio_file_channels(file);
                if (output_filename != NULL)
                        fileout = new_file_wo(file, output_filename);
        }

        ibuf = new_fvec(overlap_size, channels);
        obuf = new_fvec(overlap_size, channels);
        woodblock = new_fvec(buffer_size,1);
        fftgrain = new_cvec(buffer_size, channels);

        file_read(onsetfile, overlap_size, woodblock);

        /* phase vocoder */
        debug("Phase voc init ... \n");
        pv = new_aubio_pvoc(buffer_size, overlap_size, channels);

        /* onset init */
        debug("type_onset: %d\n", (int)type_onset);
        debug("threshold : %f\n", threshold);
        parms = new_aubio_peakpicker(threshold);

        o = new_aubio_onsetdetection(type_onset,buffer_size,channels);
        /*onset = new_fvec(overlap_size, channels);
        for (frames=0;frames<overlap_size;frames++){
                onset->data[0][frames] = 0.; 
        }*/
        onset = new_fvec(0, channels);
        
        //onset_keep = new_fvec(post+pre+1, channels);
        //onset_proc = new_fvec(post+pre+1, channels);

        // command line argument parsing
        if(usejack) {
#ifdef JACK_SUPPORT
                aubio_jack_t * jack_setup;
                debug("Jack init ...\n");
                jack_setup = new_aubio_jack(channels, channels, 
                                (aubio_process_func_t)aubio_process);

                /* initialise fftgrain */
                aubio_pvoc_do (pv,ibuf, fftgrain);

                debug("Jack activation ...\n");
                aubio_jack_activate(jack_setup);

                debug("Processing (Ctrl+C to quit) ...\n");
                pause();

                aubio_jack_close(jack_setup);
#endif

        } else {
                fvec_t * inputbuf ;
                fvec_t * outputbuf;
                /* file objects */

                inputbuf        = new_fvec(overlap_size, channels);
                outputbuf       = new_fvec(overlap_size, channels);     
                /* phasevoc init */
                debug("Processing ...\n");

                /** \bug phasevoc not initialized yet */
                /* initialise fftgrain and input bug */
                for (frames=0;frames<2;frames++) {
                        aubio_pvoc_do (pv,inputbuf, fftgrain);
                }

                /** start filling the phasevoc */
                //for (frames=0;frames<1;frames++) {
                        //file_read(file, overlap_size, inputbuf);
                        //aubio_pvoc_do (pv,inputbuf, fftgrain);
                        /** \bug onset is still badly initialized */
                        //aubio_onsetdetection(o,fftgrain, onset);
                //}

                //debug("coucou\n");
                frames = 0;
                while ((overlap_size == file_read(file, overlap_size, inputbuf)) ) 
                {
                        isonset=0;
                        aubio_process(inputbuf->data, outputbuf->data, overlap_size);
                        if (isonset) {
                                /*output times in seconds*/
                                //errmsg("%f\n",(frames-1)*overlap_size/(float)samplerate);
                                errmsg("%f\n",(frames-3)*overlap_size/(float)samplerate);
                        }
                        if (output_filename != NULL)
                                file_write(fileout,overlap_size,outputbuf);
                        frames++;
                }
                debug("Processed %d frames of %d samples.\n", frames, buffer_size);
                del_file(file);
                if (output_filename != NULL)
                        del_file(fileout);
        }

        del_aubio_pvoc(pv);

        del_fvec(obuf);
        del_fvec(ibuf);
        del_cvec(fftgrain);
        //del_fvec(onset_keep);
        //del_fvec(onset_proc);
        del_fvec(onset);

        debug("End of program.\n");
        fflush(stderr);
        return 0;
}