source: src/notes/notes.c @ 6bba139

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretch
Last change on this file since 6bba139 was 6bba139, checked in by Paul Brossier <piem@piem.org>, 2 years ago

src/notes/notes.h: add get/set for release drop level (closes: #203)

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File size: 7.5 KB
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1/*
2  Copyright (C) 2014-2018 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#define AUBIO_DEFAULT_NOTES_RELEASE_DROP 10.
29// increase to 10. for .1  cent precision
30//      or to 100. for .01 cent precision
31#define AUBIO_DEFAULT_CENT_PRECISION 1.
32#define AUBIO_DEFAULT_NOTES_MINIOI_MS 30.
33
34struct _aubio_notes_t {
35
36  uint_t onset_buf_size;
37  uint_t pitch_buf_size;
38  uint_t hop_size;
39
40  uint_t samplerate;
41
42  uint_t median;
43  fvec_t *note_buffer;
44  fvec_t *note_buffer2;
45
46  aubio_pitch_t *pitch;
47  fvec_t *pitch_output;
48  smpl_t pitch_tolerance;
49
50  aubio_onset_t *onset;
51  fvec_t *onset_output;
52  smpl_t onset_threshold;
53
54  smpl_t curnote;
55  smpl_t newnote;
56
57  smpl_t silence_threshold;
58
59  uint_t isready;
60
61  smpl_t last_onset_level;
62  smpl_t release_drop_level;
63};
64
65aubio_notes_t * new_aubio_notes (const char_t * method,
66    uint_t buf_size, uint_t hop_size, uint_t samplerate) {
67  aubio_notes_t *o = AUBIO_NEW(aubio_notes_t);
68
69  const char_t * onset_method = "default";
70  const char_t * pitch_method = "default";
71
72  o->onset_buf_size = buf_size;
73  o->pitch_buf_size = buf_size * 4;
74  o->hop_size = hop_size;
75
76  o->onset_threshold = 0.;
77  o->pitch_tolerance = 0.;
78
79  o->samplerate = samplerate;
80
81  o->median = 6;
82
83  o->isready = 0;
84
85  o->onset = new_aubio_onset (onset_method, o->onset_buf_size, o->hop_size, o->samplerate);
86  if (o->onset_threshold != 0.) aubio_onset_set_threshold (o->onset, o->onset_threshold);
87  o->onset_output = new_fvec (1);
88
89  o->pitch = new_aubio_pitch (pitch_method, o->pitch_buf_size, o->hop_size, o->samplerate);
90  if (o->pitch == NULL) goto fail;
91  if (o->pitch_tolerance != 0.) aubio_pitch_set_tolerance (o->pitch, o->pitch_tolerance);
92  aubio_pitch_set_unit (o->pitch, "midi");
93  o->pitch_output = new_fvec (1);
94
95  if (strcmp(method, "default") != 0) {
96    AUBIO_ERR("notes: unknown notes detection method \"%s\"\n", method);
97    goto fail;
98  }
99  o->note_buffer = new_fvec(o->median);
100  o->note_buffer2 = new_fvec(o->median);
101
102  o->curnote = -1.;
103  o->newnote = 0.;
104
105  aubio_notes_set_silence(o, AUBIO_DEFAULT_NOTES_SILENCE);
106  aubio_notes_set_minioi_ms (o, AUBIO_DEFAULT_NOTES_MINIOI_MS);
107
108  o->last_onset_level = AUBIO_DEFAULT_NOTES_SILENCE;
109  o->release_drop_level = AUBIO_DEFAULT_NOTES_RELEASE_DROP;
110
111  return o;
112
113fail:
114  del_aubio_notes(o);
115  return NULL;
116}
117
118uint_t aubio_notes_set_silence(aubio_notes_t *o, smpl_t silence)
119{
120  uint_t err = AUBIO_OK;
121  if (aubio_pitch_set_silence(o->pitch, silence) != AUBIO_OK) {
122    err = AUBIO_FAIL;
123  }
124  if (aubio_onset_set_silence(o->onset, silence) != AUBIO_OK) {
125    err = AUBIO_FAIL;
126  }
127  o->silence_threshold = silence;
128  return err;
129}
130
131smpl_t aubio_notes_get_silence(const aubio_notes_t *o)
132{
133  return aubio_pitch_get_silence(o->pitch);
134}
135
136uint_t aubio_notes_set_minioi_ms (aubio_notes_t *o, smpl_t minioi_ms)
137{
138  uint_t err = AUBIO_OK;
139  if (!o->onset || (aubio_onset_set_minioi_ms(o->onset, minioi_ms) != 0)) {
140    err = AUBIO_FAIL;
141  }
142  return err;
143}
144
145smpl_t aubio_notes_get_minioi_ms(const aubio_notes_t *o)
146{
147  return aubio_onset_get_minioi_ms(o->onset);
148}
149
150uint_t aubio_notes_set_release_drop(aubio_notes_t *o, smpl_t release_drop_level)
151{
152  uint_t err = AUBIO_OK;
153  if (release_drop_level < 0.) {
154    err = AUBIO_FAIL;
155  } else {
156    o->release_drop_level = release_drop_level;
157  }
158  return err;
159}
160
161smpl_t aubio_notes_get_release_drop(const aubio_notes_t *o)
162{
163  return o->release_drop_level;
164}
165
166/** append new note candidate to the note_buffer and return filtered value. we
167 * need to copy the input array as fvec_median destroy its input data.*/
168static void
169note_append (fvec_t * note_buffer, smpl_t curnote)
170{
171  uint_t i = 0;
172  for (i = 0; i < note_buffer->length - 1; i++) {
173    note_buffer->data[i] = note_buffer->data[i + 1];
174  }
175  //note_buffer->data[note_buffer->length - 1] = ROUND(10.*curnote)/10.;
176  note_buffer->data[note_buffer->length - 1] = ROUND(AUBIO_DEFAULT_CENT_PRECISION*curnote);
177  return;
178}
179
180static smpl_t
181aubio_notes_get_latest_note (aubio_notes_t *o)
182{
183  fvec_copy(o->note_buffer, o->note_buffer2);
184  return fvec_median (o->note_buffer2) / AUBIO_DEFAULT_CENT_PRECISION;
185}
186
187
188void aubio_notes_do (aubio_notes_t *o, const fvec_t * input, fvec_t * notes)
189{
190  smpl_t new_pitch, curlevel;
191  fvec_zeros(notes);
192  aubio_onset_do(o->onset, input, o->onset_output);
193
194  aubio_pitch_do (o->pitch, input, o->pitch_output);
195  new_pitch = o->pitch_output->data[0];
196  if(o->median){
197    note_append(o->note_buffer, new_pitch);
198  }
199
200  /* curlevel is negatif or 1 if silence */
201  curlevel = aubio_level_detection(input, o->silence_threshold);
202  if (o->onset_output->data[0] != 0) {
203    /* test for silence */
204    if (curlevel == 1.) {
205      if (o->median) o->isready = 0;
206      /* send note off */
207      //send_noteon(o->curnote,0);
208      //notes->data[0] = o->curnote;
209      //notes->data[1] = 0.;
210      //AUBIO_WRN("notes: sending note-off at onset, not enough level\n");
211      notes->data[2] = o->curnote;
212    } else {
213      if (o->median) {
214        o->isready = 1;
215      } else {
216        /* kill old note */
217        //send_noteon(o->curnote,0, o->samplerate);
218        //AUBIO_WRN("notes: sending note-off at onset, new onset detected\n");
219        notes->data[2] = o->curnote;
220        /* get and send new one */
221        //send_noteon(new_pitch,127+(int)floor(curlevel), o->samplerate);
222        notes->data[0] = new_pitch;
223        notes->data[1] = 127 + (int)floor(curlevel);
224        o->curnote = new_pitch;
225      }
226      o->last_onset_level = curlevel;
227    }
228  } else {
229    if (curlevel < o->last_onset_level - o->release_drop_level)
230    {
231      // send note off
232      //AUBIO_WRN("notes: sending note-off, release detected\n");
233      notes->data[0] = 0;
234      notes->data[1] = 0;
235      notes->data[2] = o->curnote;
236      // reset last_onset_level to silence_threshold
237      o->last_onset_level = o->silence_threshold;
238      o->curnote = 0;
239    }
240    else if (o->median)
241    {
242      if (o->isready > 0)
243        o->isready++;
244      if (o->isready == o->median)
245      {
246        /* kill old note */
247        //send_noteon(curnote,0);
248        if (o->curnote != 0)
249        {
250          //AUBIO_WRN("notes: sending note-off, new note detected\n");
251          notes->data[2] = o->curnote;
252        }
253        o->newnote = aubio_notes_get_latest_note(o);
254        o->curnote = o->newnote;
255        /* get and send new one */
256        if (o->curnote>45){
257          //send_noteon(curnote,127+(int)floor(curlevel));
258          notes->data[0] = o->curnote;
259          notes->data[1] = 127 + (int) floor(curlevel);
260        }
261      }
262    } // if median
263  }
264}
265
266void del_aubio_notes (aubio_notes_t *o) {
267  if (o->note_buffer) del_fvec(o->note_buffer);
268  if (o->note_buffer2) del_fvec(o->note_buffer2);
269  if (o->pitch_output) del_fvec(o->pitch_output);
270  if (o->pitch) del_aubio_pitch(o->pitch);
271  if (o->onset_output) del_fvec(o->onset_output);
272  if (o->onset) del_aubio_onset(o->onset);
273  AUBIO_FREE(o);
274}
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