source: src/notes/notes.c @ c5ee130

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretch
Last change on this file since c5ee130 was c5ee130, checked in by Paul Brossier <piem@piem.org>, 12 months ago

[notes] prevent null pointer dereference

thanks to @niugx

  • Property mode set to 100644
File size: 7.7 KB
Line 
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 == NULL) goto fail;
87  if (o->onset_threshold != 0.) aubio_onset_set_threshold (o->onset, o->onset_threshold);
88  o->onset_output = new_fvec (1);
89
90  o->pitch = new_aubio_pitch (pitch_method, o->pitch_buf_size, o->hop_size, o->samplerate);
91  if (o->pitch == NULL) goto fail;
92  if (o->pitch_tolerance != 0.) aubio_pitch_set_tolerance (o->pitch, o->pitch_tolerance);
93  aubio_pitch_set_unit (o->pitch, "midi");
94  o->pitch_output = new_fvec (1);
95
96  if (strcmp(method, "default") != 0) {
97    AUBIO_ERR("notes: unknown notes detection method \"%s\"\n", method);
98    goto fail;
99  }
100  o->note_buffer = new_fvec(o->median);
101  o->note_buffer2 = new_fvec(o->median);
102
103  if (!o->onset_output || !o->pitch_output ||
104      !o->note_buffer || !o->note_buffer2) goto fail;
105
106  o->curnote = -1.;
107  o->newnote = 0.;
108
109  aubio_notes_set_silence(o, AUBIO_DEFAULT_NOTES_SILENCE);
110  aubio_notes_set_minioi_ms (o, AUBIO_DEFAULT_NOTES_MINIOI_MS);
111
112  o->last_onset_level = AUBIO_DEFAULT_NOTES_SILENCE;
113  o->release_drop_level = AUBIO_DEFAULT_NOTES_RELEASE_DROP;
114
115  return o;
116
117fail:
118  del_aubio_notes(o);
119  return NULL;
120}
121
122uint_t aubio_notes_set_silence(aubio_notes_t *o, smpl_t silence)
123{
124  uint_t err = AUBIO_OK;
125  if (aubio_pitch_set_silence(o->pitch, silence) != AUBIO_OK) {
126    err = AUBIO_FAIL;
127  }
128  if (aubio_onset_set_silence(o->onset, silence) != AUBIO_OK) {
129    err = AUBIO_FAIL;
130  }
131  o->silence_threshold = silence;
132  return err;
133}
134
135smpl_t aubio_notes_get_silence(const aubio_notes_t *o)
136{
137  return aubio_pitch_get_silence(o->pitch);
138}
139
140uint_t aubio_notes_set_minioi_ms (aubio_notes_t *o, smpl_t minioi_ms)
141{
142  uint_t err = AUBIO_OK;
143  if (!o->onset || (aubio_onset_set_minioi_ms(o->onset, minioi_ms) != 0)) {
144    err = AUBIO_FAIL;
145  }
146  return err;
147}
148
149smpl_t aubio_notes_get_minioi_ms(const aubio_notes_t *o)
150{
151  return aubio_onset_get_minioi_ms(o->onset);
152}
153
154uint_t aubio_notes_set_release_drop(aubio_notes_t *o, smpl_t release_drop_level)
155{
156  uint_t err = AUBIO_OK;
157  if (release_drop_level <= 0.) {
158    AUBIO_ERR("notes: release_drop should be >= 0, got %f\n", release_drop_level);
159    err = AUBIO_FAIL;
160  } else {
161    o->release_drop_level = release_drop_level;
162  }
163  return err;
164}
165
166smpl_t aubio_notes_get_release_drop(const aubio_notes_t *o)
167{
168  return o->release_drop_level;
169}
170
171/** append new note candidate to the note_buffer and return filtered value. we
172 * need to copy the input array as fvec_median destroy its input data.*/
173static void
174note_append (fvec_t * note_buffer, smpl_t curnote)
175{
176  uint_t i = 0;
177  for (i = 0; i < note_buffer->length - 1; i++) {
178    note_buffer->data[i] = note_buffer->data[i + 1];
179  }
180  //note_buffer->data[note_buffer->length - 1] = ROUND(10.*curnote)/10.;
181  note_buffer->data[note_buffer->length - 1] = ROUND(AUBIO_DEFAULT_CENT_PRECISION*curnote);
182  return;
183}
184
185static smpl_t
186aubio_notes_get_latest_note (aubio_notes_t *o)
187{
188  fvec_copy(o->note_buffer, o->note_buffer2);
189  return fvec_median (o->note_buffer2) / AUBIO_DEFAULT_CENT_PRECISION;
190}
191
192
193void aubio_notes_do (aubio_notes_t *o, const fvec_t * input, fvec_t * notes)
194{
195  smpl_t new_pitch, curlevel;
196  fvec_zeros(notes);
197  aubio_onset_do(o->onset, input, o->onset_output);
198
199  aubio_pitch_do (o->pitch, input, o->pitch_output);
200  new_pitch = o->pitch_output->data[0];
201  if(o->median){
202    note_append(o->note_buffer, new_pitch);
203  }
204
205  /* curlevel is negatif or 1 if silence */
206  curlevel = aubio_level_detection(input, o->silence_threshold);
207  if (o->onset_output->data[0] != 0) {
208    /* test for silence */
209    if (curlevel == 1.) {
210      if (o->median) o->isready = 0;
211      /* send note off */
212      //send_noteon(o->curnote,0);
213      //notes->data[0] = o->curnote;
214      //notes->data[1] = 0.;
215      //AUBIO_WRN("notes: sending note-off at onset, not enough level\n");
216      notes->data[2] = o->curnote;
217    } else {
218      if (o->median) {
219        o->isready = 1;
220      } else {
221        /* kill old note */
222        //send_noteon(o->curnote,0, o->samplerate);
223        //AUBIO_WRN("notes: sending note-off at onset, new onset detected\n");
224        notes->data[2] = o->curnote;
225        /* get and send new one */
226        //send_noteon(new_pitch,127+(int)floor(curlevel), o->samplerate);
227        notes->data[0] = new_pitch;
228        notes->data[1] = 127 + (int)floor(curlevel);
229        o->curnote = new_pitch;
230      }
231      o->last_onset_level = curlevel;
232    }
233  } else {
234    if (curlevel < o->last_onset_level - o->release_drop_level)
235    {
236      // send note off
237      //AUBIO_WRN("notes: sending note-off, release detected\n");
238      notes->data[0] = 0;
239      notes->data[1] = 0;
240      notes->data[2] = o->curnote;
241      // reset last_onset_level to silence_threshold
242      o->last_onset_level = o->silence_threshold;
243      o->curnote = 0;
244    }
245    else if (o->median)
246    {
247      if (o->isready > 0)
248        o->isready++;
249      if (o->isready == o->median)
250      {
251        /* kill old note */
252        //send_noteon(curnote,0);
253        if (o->curnote != 0)
254        {
255          //AUBIO_WRN("notes: sending note-off, new note detected\n");
256          notes->data[2] = o->curnote;
257        }
258        o->newnote = aubio_notes_get_latest_note(o);
259        o->curnote = o->newnote;
260        /* get and send new one */
261        if (o->curnote>45){
262          //send_noteon(curnote,127+(int)floor(curlevel));
263          notes->data[0] = o->curnote;
264          notes->data[1] = 127 + (int) floor(curlevel);
265        }
266      }
267    } // if median
268  }
269}
270
271void del_aubio_notes (aubio_notes_t *o) {
272  if (o->note_buffer) del_fvec(o->note_buffer);
273  if (o->note_buffer2) del_fvec(o->note_buffer2);
274  if (o->pitch_output) del_fvec(o->pitch_output);
275  if (o->pitch) del_aubio_pitch(o->pitch);
276  if (o->onset_output) del_fvec(o->onset_output);
277  if (o->onset) del_aubio_onset(o->onset);
278  AUBIO_FREE(o);
279}
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