source: src/notes/notes.c @ 1f6a9f8

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchsampleryinfft+
Last change on this file since 1f6a9f8 was 1f6a9f8, checked in by Paul Brossier <piem@piem.org>, 3 years ago

src/notes/notes.c: fix get_minioi_ms

  • Property mode set to 100644
File size: 6.2 KB
Line 
1/*
2  Copyright (C) 2014 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 "aubio_priv.h"
22#include "fvec.h"
23#include "pitch/pitch.h"
24#include "onset/onset.h"
25#include "notes/notes.h"
26
27#define AUBIO_DEFAULT_NOTES_SILENCE -70.
28// increase to 10. for .1  cent precision
29//      or to 100. for .01 cent precision
30#define AUBIO_DEFAULT_CENT_PRECISION 1.
31#define AUBIO_DEFAULT_NOTES_MINIOI_MS 30.
32
33struct _aubio_notes_t {
34
35  uint_t onset_buf_size;
36  uint_t pitch_buf_size;
37  uint_t hop_size;
38
39  uint_t samplerate;
40
41  uint_t median;
42  fvec_t *note_buffer;
43  fvec_t *note_buffer2;
44
45  aubio_pitch_t *pitch;
46  fvec_t *pitch_output;
47  smpl_t pitch_tolerance;
48
49  aubio_onset_t *onset;
50  fvec_t *onset_output;
51  smpl_t onset_threshold;
52
53  smpl_t curnote;
54  smpl_t newnote;
55
56  smpl_t silence_threshold;
57
58  uint_t isready;
59};
60
61aubio_notes_t * new_aubio_notes (const char_t * method,
62    uint_t buf_size, uint_t hop_size, uint_t samplerate) {
63  aubio_notes_t *o = AUBIO_NEW(aubio_notes_t);
64
65  const char_t * onset_method = "default";
66  const char_t * pitch_method = "default";
67
68  o->onset_buf_size = buf_size;
69  o->pitch_buf_size = buf_size * 4;
70  o->hop_size = hop_size;
71
72  o->onset_threshold = 0.;
73  o->pitch_tolerance = 0.;
74
75  o->samplerate = samplerate;
76
77  o->median = 6;
78
79  o->isready = 0;
80
81  o->onset = new_aubio_onset (onset_method, o->onset_buf_size, o->hop_size, o->samplerate);
82  if (o->onset_threshold != 0.) aubio_onset_set_threshold (o->onset, o->onset_threshold);
83  o->onset_output = new_fvec (1);
84
85  o->pitch = new_aubio_pitch (pitch_method, o->pitch_buf_size, o->hop_size, o->samplerate);
86  if (o->pitch_tolerance != 0.) aubio_pitch_set_tolerance (o->pitch, o->pitch_tolerance);
87  aubio_pitch_set_unit (o->pitch, "midi");
88  o->pitch_output = new_fvec (1);
89
90  if (strcmp(method, "default") != 0) {
91    AUBIO_ERR("notes: unknown notes detection method \"%s\"\n", method);
92    goto fail;
93  }
94  o->note_buffer = new_fvec(o->median);
95  o->note_buffer2 = new_fvec(o->median);
96
97  o->curnote = -1.;
98  o->newnote = 0.;
99
100  aubio_notes_set_silence(o, AUBIO_DEFAULT_NOTES_SILENCE);
101  aubio_notes_set_minioi_ms (o, AUBIO_DEFAULT_NOTES_MINIOI_MS);
102
103  return o;
104
105fail:
106  del_aubio_notes(o);
107  return NULL;
108}
109
110uint_t aubio_notes_set_silence(aubio_notes_t *o, smpl_t silence)
111{
112  uint_t err = AUBIO_OK;
113  if (aubio_pitch_set_silence(o->pitch, silence) != AUBIO_OK) {
114    err = AUBIO_FAIL;
115  }
116  if (aubio_onset_set_silence(o->onset, silence) != AUBIO_OK) {
117    err = AUBIO_FAIL;
118  }
119  o->silence_threshold = silence;
120  return err;
121}
122
123smpl_t aubio_notes_get_silence(const aubio_notes_t *o)
124{
125  return aubio_pitch_get_silence(o->pitch);
126}
127
128uint_t aubio_notes_set_minioi_ms (aubio_notes_t *o, smpl_t minioi_ms)
129{
130  uint_t err = AUBIO_OK;
131  if (!o->onset || (aubio_onset_set_minioi_ms(o->onset, minioi_ms) != 0)) {
132    err = AUBIO_FAIL;
133  }
134  return err;
135}
136
137smpl_t aubio_notes_get_minioi_ms(const aubio_notes_t *o)
138{
139  return aubio_onset_get_minioi_ms(o->onset);
140}
141
142/** append new note candidate to the note_buffer and return filtered value. we
143 * need to copy the input array as fvec_median destroy its input data.*/
144static void
145note_append (fvec_t * note_buffer, smpl_t curnote)
146{
147  uint_t i = 0;
148  for (i = 0; i < note_buffer->length - 1; i++) {
149    note_buffer->data[i] = note_buffer->data[i + 1];
150  }
151  //note_buffer->data[note_buffer->length - 1] = ROUND(10.*curnote)/10.;
152  note_buffer->data[note_buffer->length - 1] = ROUND(AUBIO_DEFAULT_CENT_PRECISION*curnote);
153  return;
154}
155
156static smpl_t
157aubio_notes_get_latest_note (aubio_notes_t *o)
158{
159  fvec_copy(o->note_buffer, o->note_buffer2);
160  return fvec_median (o->note_buffer2) / AUBIO_DEFAULT_CENT_PRECISION;
161}
162
163
164void aubio_notes_do (aubio_notes_t *o, const fvec_t * input, fvec_t * notes)
165{
166  smpl_t new_pitch, curlevel;
167  fvec_zeros(notes);
168  aubio_onset_do(o->onset, input, o->onset_output);
169
170  aubio_pitch_do (o->pitch, input, o->pitch_output);
171  new_pitch = o->pitch_output->data[0];
172  if(o->median){
173    note_append(o->note_buffer, new_pitch);
174  }
175
176  /* curlevel is negatif or 1 if silence */
177  curlevel = aubio_level_detection(input, o->silence_threshold);
178  if (o->onset_output->data[0] != 0) {
179    /* test for silence */
180    if (curlevel == 1.) {
181      if (o->median) o->isready = 0;
182      /* send note off */
183      //send_noteon(o->curnote,0);
184      //notes->data[0] = o->curnote;
185      //notes->data[1] = 0.;
186      notes->data[2] = o->curnote;
187    } else {
188      if (o->median) {
189        o->isready = 1;
190      } else {
191        /* kill old note */
192        //send_noteon(o->curnote,0, o->samplerate);
193        notes->data[2] = o->curnote;
194        /* get and send new one */
195        //send_noteon(new_pitch,127+(int)floor(curlevel), o->samplerate);
196        notes->data[0] = new_pitch;
197        notes->data[1] = 127 + (int)floor(curlevel);
198        o->curnote = new_pitch;
199      }
200    }
201  } else {
202    if (o->median) {
203      if (o->isready > 0)
204        o->isready++;
205      if (o->isready == o->median)
206      {
207        /* kill old note */
208        //send_noteon(curnote,0);
209        notes->data[2] = o->curnote;
210        o->newnote = aubio_notes_get_latest_note(o);
211        o->curnote = o->newnote;
212        /* get and send new one */
213        if (o->curnote>45){
214          //send_noteon(curnote,127+(int)floor(curlevel));
215          notes->data[0] = o->curnote;
216          notes->data[1] = 127 + (int) floor(curlevel);
217        }
218      }
219    } // if median
220  }
221}
222
223void del_aubio_notes (aubio_notes_t *o) {
224  if (o->note_buffer) del_fvec(o->note_buffer);
225  if (o->note_buffer2) del_fvec(o->note_buffer2);
226  if (o->pitch_output) del_fvec(o->pitch_output);
227  if (o->pitch) del_aubio_pitch(o->pitch);
228  if (o->onset_output) del_fvec(o->onset_output);
229  if (o->onset) del_aubio_onset(o->onset);
230  AUBIO_FREE(o);
231}
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