source: examples/aubioonset.c @ 740f06b

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since 740f06b was d4c5de7, checked in by Paul Brossier <piem@piem.org>, 11 years ago

examples/: make use of aubio_onset in aubioonset and aubionotes, simplify, keep only general stuff in utils

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1/*
2   Copyright (C) 2003 Paul Brossier
3
4   This program is free software; you can redistribute it and/or modify
5   it under the terms of the GNU General Public License as published by
6   the Free Software Foundation; either version 2 of the License, or
7   (at your option) any later version.
8
9   This program is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12   GNU General Public License for more details.
13
14   You should have received a copy of the GNU General Public License
15   along with this program; if not, write to the Free Software
16   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17*/
18
19#include "utils.h"
20
21unsigned int pos = 0; /*frames%dspblocksize*/
22
23aubio_onset_t *o;
24fvec_t *onset;
25
26static int aubio_process(smpl_t **input, smpl_t **output, int nframes) {
27  unsigned int i;       /*channels*/
28  unsigned int j;       /*frames*/
29  for (j=0;j<(unsigned)nframes;j++) {
30    if(usejack) {
31      for (i=0;i<channels;i++) {
32        /* write input to datanew */
33        fvec_write_sample(ibuf, input[i][j], i, pos);
34        /* put synthnew in output */
35        output[i][j] = fvec_read_sample(obuf, i, pos);
36      }
37    }
38    /*time for fft*/
39    if (pos == overlap_size-1) {         
40      /* block loop */
41      aubio_onset_do (o, ibuf, onset);
42      if (fvec_read_sample(onset, 0, 0)) {
43        for (pos = 0; pos < overlap_size; pos++){
44          obuf->data[0][pos] = woodblock->data[0][pos];
45        }
46      } else {
47        for (pos = 0; pos < overlap_size; pos++) {
48          obuf->data[0][pos] = 0.;
49        }
50      }
51      /* end of block loop */
52      pos = -1; /* so it will be zero next j loop */
53    }
54    pos++;
55  }
56  return 1;
57}
58
59static void process_print (void) {
60      /* output times in seconds, taking back some
61       * delay to ensure the label is _before_ the
62       * actual onset */
63      if (!verbose && usejack) return;
64      smpl_t onset_found = fvec_read_sample(onset, 0, 0);
65      if (onset_found) {
66        if(frames >= 4) {
67          outmsg("%f\n",(frames - frames_delay + onset_found) 
68                  *overlap_size/(float)samplerate);
69        } else if (frames < frames_delay) {
70          outmsg("%f\n",0.);
71        }
72      }
73}
74
75int main(int argc, char **argv) {
76  frames_delay = 3;
77  examples_common_init(argc,argv);
78
79  o = new_aubio_onset (onset_mode, buffer_size, overlap_size, channels,
80          samplerate);
81  onset = new_fvec (1, channels);
82
83  examples_common_process(aubio_process,process_print);
84
85  del_aubio_onset (o);
86  del_fvec (onset);
87
88  examples_common_del();
89  debug("End of program.\n");
90  fflush(stderr);
91  return 0;
92}
93
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