source: examples/aubionotes.c @ c34336e

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since c34336e was c34336e, checked in by Paul Brossier <piem@piem.org>, 6 years ago

src/fvec.h: clean up fvec api

  • Property mode set to 100644
File size: 4.3 KB
Line 
1/*
2  Copyright (C) 2003-2013 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#define AUBIO_UNSTABLE 1 // for fvec_median
22#include "utils.h"
23#define PROG_HAS_PITCH 1
24#define PROG_HAS_ONSET 1
25#define PROG_HAS_JACK 1
26// TODO add PROG_HAS_OUTPUT
27#include "parse_args.h"
28
29uint_t median = 6;
30
31fvec_t *note_buffer;
32fvec_t *note_buffer2;
33
34smpl_t curnote = 0.;
35smpl_t newnote = 0.;
36uint_t isready = 0;
37
38aubio_pitch_t *pitch;
39aubio_onset_t *o;
40fvec_t *onset;
41fvec_t *pitch_obuf;
42
43/** append new note candidate to the note_buffer and return filtered value. we
44 * need to copy the input array as fvec_median destroy its input data.*/
45void note_append (fvec_t * note_buffer, smpl_t curnote);
46uint_t get_note (fvec_t * note_buffer, fvec_t * note_buffer2);
47
48static void
49process_block(fvec_t *ibuf, fvec_t *obuf) {
50  fvec_zeros(obuf);
51  aubio_onset_do(o, ibuf, onset);
52
53  aubio_pitch_do (pitch, ibuf, pitch_obuf);
54  smpl_t new_pitch = fvec_get_sample(pitch_obuf, 0);
55  if(median){
56    note_append(note_buffer, new_pitch);
57  }
58
59  /* curlevel is negatif or 1 if silence */
60  smpl_t curlevel = aubio_level_detection(ibuf, silence_threshold);
61  if (fvec_get_sample(onset, 0)) {
62    /* test for silence */
63    if (curlevel == 1.) {
64      if (median) isready = 0;
65      /* send note off */
66      send_noteon(curnote,0);
67    } else {
68      if (median) {
69        isready = 1;
70      } else {
71        /* kill old note */
72        send_noteon(curnote,0);
73        /* get and send new one */
74        send_noteon(new_pitch,127+(int)floor(curlevel));
75        curnote = new_pitch;
76      }
77    }
78  } else {
79    if (median) {
80      if (isready > 0)
81        isready++;
82      if (isready == median)
83      {
84        /* kill old note */
85        send_noteon(curnote,0);
86        newnote = get_note(note_buffer, note_buffer2);
87        curnote = newnote;
88        /* get and send new one */
89        if (curnote>45){
90          send_noteon(curnote,127+(int)floor(curlevel));
91        }
92      }
93    } // if median
94  }
95}
96
97static void
98process_print (void) {
99  //if (verbose) outmsg("%f\n",pitch_obuf->data[0]);
100}
101
102void
103note_append (fvec_t * note_buffer, smpl_t curnote)
104{
105  uint_t i = 0;
106  for (i = 0; i < note_buffer->length - 1; i++) {
107    note_buffer->data[i] = note_buffer->data[i + 1];
108  }
109  note_buffer->data[note_buffer->length - 1] = curnote;
110  return;
111}
112
113uint_t
114get_note (fvec_t * note_buffer, fvec_t * note_buffer2)
115{
116  uint_t i;
117  for (i = 0; i < note_buffer->length; i++) {
118    note_buffer2->data[i] = note_buffer->data[i];
119  }
120  return fvec_median (note_buffer2);
121}
122
123int main(int argc, char **argv) {
124  examples_common_init(argc,argv);
125
126  verbmsg ("using source: %s at %dHz\n", source_uri, samplerate);
127
128  verbmsg ("onset method: %s, ", onset_method);
129  verbmsg ("buffer_size: %d, ", buffer_size);
130  verbmsg ("hop_size: %d, ", hop_size);
131  verbmsg ("threshold: %f\n", onset_threshold);
132
133  verbmsg ("pitch method: %s, ", pitch_method);
134  verbmsg ("buffer_size: %d, ", buffer_size * 4);
135  verbmsg ("hop_size: %d, ", hop_size);
136  verbmsg ("tolerance: %f\n", pitch_tolerance);
137
138  o = new_aubio_onset (onset_method, buffer_size, hop_size, samplerate);
139  if (onset_threshold != 0.) aubio_onset_set_threshold (o, onset_threshold);
140  onset = new_fvec (1);
141
142  pitch = new_aubio_pitch (pitch_method, buffer_size * 4, hop_size, samplerate);
143  if (pitch_tolerance != 0.) aubio_pitch_set_tolerance (pitch, pitch_tolerance);
144  pitch_obuf = new_fvec (1);
145
146  if (median) {
147      note_buffer = new_fvec (median);
148      note_buffer2 = new_fvec (median);
149  }
150
151  examples_common_process((aubio_process_func_t)process_block, process_print);
152
153  // send a last note off
154  send_noteon (curnote, 0);
155
156  del_aubio_pitch (pitch);
157  if (median) {
158      del_fvec (note_buffer);
159      del_fvec (note_buffer2);
160  }
161  del_fvec (pitch_obuf);
162
163  examples_common_del();
164  return 0;
165}
166
Note: See TracBrowser for help on using the repository browser.