source: examples/aubiopitch.c @ 5bfb0fd

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since 5bfb0fd was f3617e7, checked in by Paul Brossier <piem@piem.org>, 7 years ago

examples/: use wavetable to play pitch and to replace woodblock

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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
23unsigned int pos = 0; /*frames%dspblocksize*/
24
25aubio_pitch_t *o;
26aubio_wavetable_t *wavetable;
27fvec_t *pitch;
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      aubio_pitch_do (o, ibuf, pitch);
42      smpl_t freq = fvec_read_sample(pitch, 0);
43      smpl_t amp = powf(10., aubio_db_spl(ibuf)*.05 );
44      aubio_wavetable_set_amp ( wavetable, amp );
45      if (freq != 0.0) {
46        aubio_wavetable_set_freq ( wavetable, freq );
47      } else {
48        aubio_wavetable_set_freq ( wavetable, 0.0 );
49      }
50      aubio_wavetable_do (wavetable, obuf, obuf);
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      if (!verbose && usejack) return;
61      smpl_t pitch_found = fvec_read_sample(pitch, 0);
62      outmsg("%f %f\n",(frames) 
63              *overlap_size/(float)samplerate, pitch_found);
64}
65
66int main(int argc, char **argv) {
67  examples_common_init(argc,argv);
68
69  o = new_aubio_pitch (pitch_mode, buffer_size, overlap_size, samplerate);
70  pitch = new_fvec (1);
71
72  wavetable = new_aubio_wavetable (samplerate, overlap_size);
73  aubio_wavetable_play ( wavetable );
74
75  examples_common_process(aubio_process,process_print);
76
77  del_aubio_pitch (o);
78  del_aubio_wavetable (wavetable);
79  del_fvec (pitch);
80
81  examples_common_del();
82  debug("End of program.\n");
83  fflush(stderr);
84  return 0;
85}
86
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