source: examples/aubioonset.c @ c1ddeb8

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since c1ddeb8 was c1ddeb8, checked in by Paul Brossier <piem@piem.org>, 6 years ago

examples/aubioonset.c: only play onset for now

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File size: 2.5 KB
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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
23uint_t pos = 0; /*frames%dspblocksize*/
24
25aubio_onset_t *o;
26aubio_wavetable_t *wavetable;
27fvec_t *onset;
28
29static int aubio_process(smpl_t **input, smpl_t **output, int nframes) {
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      fvec_zeros(obuf);
42      aubio_onset_do (o, ibuf, onset);
43      if ( fvec_read_sample(onset, 0) ) {
44        aubio_wavetable_play ( wavetable );
45      } else {
46        aubio_wavetable_stop ( wavetable );
47      }
48      aubio_wavetable_do (wavetable, obuf, obuf);
49      /* end of block loop */
50      pos = -1; /* so it will be zero next j loop */
51    }
52    pos++;
53  }
54  return 1;
55}
56
57static void
58process_print (void)
59{
60  /* output times in seconds, taking back some delay to ensure the label is
61   * _before_ the actual onset */
62  if (!verbose && usejack)
63    return;
64  smpl_t onset_found = fvec_read_sample (onset, 0);
65  if (onset_found) {
66    outmsg ("%f\n", aubio_onset_get_last_s (o) );
67  }
68}
69
70int main(int argc, char **argv) {
71  frames_delay = 3;
72  examples_common_init(argc,argv);
73
74  o = new_aubio_onset (onset_mode, buffer_size, overlap_size, samplerate);
75  if (threshold != 0.) aubio_onset_set_threshold (o, threshold);
76  onset = new_fvec (1);
77
78  wavetable = new_aubio_wavetable (samplerate, overlap_size);
79  aubio_wavetable_set_freq ( wavetable, 2450.);
80  //aubio_sampler_load (sampler, "/archives/sounds/woodblock.aiff");
81
82  examples_common_process(aubio_process,process_print);
83
84  del_aubio_onset (o);
85  del_aubio_wavetable (wavetable);
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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