source: examples/aubioonset.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"

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

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

/* settings */
int verbose = 0;
int usejack = 0;
int usedoubled = 1;


/* energy,specdiff,hfc,complexdomain,phase */
aubio_onsetdetection_type type_onset  = hfc;
aubio_onsetdetection_type type_onset2 = complexdomain;
smpl_t threshold                      = 0.1;
smpl_t threshold2                     = -90.;
uint_t buffer_size                    = 1024;
uint_t overlap_size                   = 512;
uint_t channels                       = 1;
uint_t samplerate                     = 44100;

/* global objects */
aubio_pvoc_t * pv;
fvec_t * ibuf;
fvec_t * obuf;
cvec_t * fftgrain;
fvec_t * woodblock;
aubio_onsetdetection_t *o;
aubio_onsetdetection_t *o2;
fvec_t *onset;
fvec_t *onset2;
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*/
  for (j=0;j<nframes;j++) {
    if(usejack) {
      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) {         
      /* block loop */
      aubio_pvoc_do (pv,ibuf, fftgrain);
      aubio_onsetdetection(o,fftgrain, onset);
      if (usedoubled) {
        aubio_onsetdetection(o2,fftgrain, onset2);
        onset->data[0][0] *= onset2->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);
      /* end of block loop */
      pos = -1; /* so it will be zero next j loop */
    }
    pos++;
  }
  return 1;
}

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

  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);
    if (verbose) 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);

  /* read the output sound once */
  file_read(onsetfile, overlap_size, woodblock);

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

  /* onsets */
  parms = new_aubio_peakpicker(threshold);
  o = new_aubio_onsetdetection(type_onset,buffer_size,channels);
  onset = new_fvec(1, channels);
  if (usedoubled)    {
    o2 = new_aubio_onsetdetection(type_onset2,buffer_size,channels);
    onset2 = new_fvec(1 , channels);
  }

  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);
    debug("Jack activation ...\n");
    aubio_jack_activate(jack_setup);
    debug("Processing (Ctrl+C to quit) ...\n");
    pause();
    aubio_jack_close(jack_setup);
#else
    outmsg("Compiled without jack output, exiting.");
#endif

  } else {
    /* phasevoc */
    debug("Processing ...\n");

    frames = 0;

    while (overlap_size == file_read(file, overlap_size, ibuf))
    {
      isonset=0;
      aubio_process(ibuf->data, obuf->data, overlap_size);
      /* output times in seconds, taking back some 
       * delay to ensure the label is _before_ the
       * actual onset */
      if (isonset && output_filename == NULL) {
        outmsg("%f\n",(frames-4)*overlap_size/(float)samplerate);
      }
      if (output_filename != NULL) {
        file_write(fileout,overlap_size,obuf);
      }
      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);

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