source: examples/aubioonset.c @ 4621cd6

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since 4621cd6 was 4621cd6, checked in by Paul Brossier <piem@piem.org>, 11 years ago

examples: switch to mono

  • Property mode set to 100644
File size: 2.4 KB
Line 
1/*
2  Copyright (C) 2003-2009 Paul Brossier <piem@aubio.org>
3
4  This file is part of aubio.
5
6  aubio is free software: you can redistribute it and/or modify
7  it under the terms of the GNU General Public License as published by
8  the Free Software Foundation, either version 3 of the License, or
9  (at your option) any later version.
10
11  aubio is distributed in the hope that it will be useful,
12  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  GNU General Public License for more details.
15
16  You should have received a copy of the GNU General Public License
17  along with aubio.  If not, see <http://www.gnu.org/licenses/>.
18
19*/
20
21#include "utils.h"
22
23unsigned int pos = 0; /*frames%dspblocksize*/
24
25aubio_onset_t *o;
26fvec_t *onset;
27
28static int aubio_process(smpl_t **input, smpl_t **output, int nframes) {
29  unsigned int i;       /*channels*/
30  unsigned int j;       /*frames*/
31  for (j=0;j<(unsigned)nframes;j++) {
32    if(usejack) {
33      /* write input to datanew */
34      fvec_write_sample(ibuf, input[0][j], pos);
35      /* put synthnew in output */
36      output[0][j] = fvec_read_sample(obuf, pos);
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) ) {
43        fvec_copy (woodblock, obuf);
44      } else {
45        fvec_zeros (obuf);
46      }
47      /* end of block loop */
48      pos = -1; /* so it will be zero next j loop */
49    }
50    pos++;
51  }
52  return 1;
53}
54
55static void
56process_print (void)
57{
58  /* output times in seconds, taking back some delay to ensure the label is
59   * _before_ the actual onset */
60  if (!verbose && usejack)
61    return;
62  smpl_t onset_found = fvec_read_sample (onset, 0);
63  if (onset_found) {
64    if (frames >= 4) {
65      outmsg ("%f\n", (frames - frames_delay + onset_found)
66          * overlap_size / (float) samplerate);
67    } else if (frames < frames_delay) {
68      outmsg ("%f\n", 0.);
69    }
70  }
71}
72
73int main(int argc, char **argv) {
74  frames_delay = 3;
75  examples_common_init(argc,argv);
76
77  o = new_aubio_onset (onset_mode, buffer_size, overlap_size, samplerate);
78  if (threshold != 0.) aubio_onset_set_threshold (o, threshold);
79  onset = new_fvec (1);
80
81  examples_common_process(aubio_process,process_print);
82
83  del_aubio_onset (o);
84  del_fvec (onset);
85
86  examples_common_del();
87  debug("End of program.\n");
88  fflush(stderr);
89  return 0;
90}
91
Note: See TracBrowser for help on using the repository browser.