source: examples/aubionotes.c @ 740f06b

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since 740f06b was d4c5de7, checked in by Paul Brossier <piem@piem.org>, 11 years ago

examples/: make use of aubio_onset in aubioonset and aubionotes, simplify, keep only general stuff in utils

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1/*
2   Copyright (C) 2003 Paul Brossier
3
4   This program is free software; you can redistribute it and/or modify
5   it under the terms of the GNU General Public License as published by
6   the Free Software Foundation; either version 2 of the License, or
7   (at your option) any later version.
8
9   This program is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12   GNU General Public License for more details.
13
14   You should have received a copy of the GNU General Public License
15   along with this program; if not, write to the Free Software
16   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17*/
18
19#include "utils.h"
20
21/* pitch objects */
22smpl_t pitch = 0.;
23
24uint_t median = 6;
25smpl_t curlevel = 0.;
26
27aubio_pitchdetection_t *pitchdet;
28
29fvec_t *note_buffer = NULL;
30fvec_t *note_buffer2 = NULL;
31
32smpl_t curnote = 0.;
33smpl_t newnote = 0.;
34uint_t isready = 0;
35unsigned int pos = 0; /*frames%dspblocksize*/
36
37aubio_pitchdetection_t *pitchdet;
38aubio_onset_t *o;
39fvec_t *onset;
40fvec_t *pitch_obuf;
41
42/** append new note candidate to the note_buffer and return filtered value. we
43 * need to copy the input array as fvec_median destroy its input data.*/
44void note_append (fvec_t * note_buffer, smpl_t curnote);
45uint_t get_note (fvec_t * note_buffer, fvec_t * note_buffer2);
46
47static int aubio_process(smpl_t **input, smpl_t **output, int nframes) {
48  unsigned int i;       /*channels*/
49  unsigned int j;       /*frames*/
50  for (j=0;j<(unsigned)nframes;j++) {
51    if(usejack) {
52      for (i=0;i<channels;i++) {
53        /* write input to datanew */
54        fvec_write_sample(ibuf, input[i][j], i, pos);
55        /* put synthnew in output */
56        output[i][j] = fvec_read_sample(obuf, i, pos);
57      }
58    }
59    /*time for fft*/
60    if (pos == overlap_size-1) {         
61      /* block loop */
62      aubio_onset_do(o, ibuf, onset);
63     
64      aubio_pitchdetection_do (pitchdet, ibuf, pitch_obuf);
65      pitch = fvec_read_sample(pitch_obuf, 0, 0);
66      if(median){
67              note_append(note_buffer, pitch);
68      }
69
70      /* curlevel is negatif or 1 if silence */
71      curlevel = aubio_level_detection(ibuf, silence);
72      if (fvec_read_sample(onset, 0, 0)) {
73              /* test for silence */
74              if (curlevel == 1.) {
75                      if (median) isready = 0;
76                      /* send note off */
77                      send_noteon(curnote,0);
78              } else {
79                      if (median) {
80                              isready = 1;
81                      } else {
82                              /* kill old note */
83                              send_noteon(curnote,0);
84                              /* get and send new one */
85                              send_noteon(pitch,127+(int)floor(curlevel));
86                              curnote = pitch;
87                      }
88
89                      for (pos = 0; pos < overlap_size; pos++){
90                              obuf->data[0][pos] = woodblock->data[0][pos];
91                      }
92              }
93      } else {
94              if (median) {
95                      if (isready > 0)
96                              isready++;
97                      if (isready == median)
98                      {
99                              /* kill old note */
100                              send_noteon(curnote,0);
101                              newnote = get_note(note_buffer, note_buffer2);
102                              curnote = newnote;
103                              /* get and send new one */
104                              if (curnote>45){
105                                      send_noteon(curnote,127+(int)floor(curlevel));
106                              }
107                      }
108              } // if median
109        for (pos = 0; pos < overlap_size; pos++)
110          obuf->data[0][pos] = 0.;
111      }
112      /* end of block loop */
113      pos = -1; /* so it will be zero next j loop */
114    }
115    pos++;
116  }
117  return 1;
118}
119
120static void process_print (void) {
121      if (verbose) outmsg("%f\n",pitch);
122}
123
124void
125note_append (fvec_t * note_buffer, smpl_t curnote)
126{
127  uint_t i = 0;
128  for (i = 0; i < note_buffer->length - 1; i++) {
129    note_buffer->data[0][i] = note_buffer->data[0][i + 1];
130  }
131  note_buffer->data[0][note_buffer->length - 1] = curnote;
132  return;
133}
134
135uint_t
136get_note (fvec_t * note_buffer, fvec_t * note_buffer2)
137{
138  uint_t i = 0;
139  for (i = 0; i < note_buffer->length; i++) {
140    note_buffer2->data[0][i] = note_buffer->data[0][i];
141  }
142  return fvec_median (note_buffer2);
143}
144
145int main(int argc, char **argv) {
146  examples_common_init(argc,argv);
147
148  o = new_aubio_onset (onset_mode, buffer_size, overlap_size, channels,
149          samplerate);
150  onset = new_fvec (1, channels);
151
152  pitchdet = new_aubio_pitchdetection (pitch_mode, buffer_size * 4,
153          overlap_size, channels, samplerate);
154  aubio_pitchdetection_set_tolerance (pitchdet, 0.7);
155  pitch_obuf = new_fvec (1, channels);
156  if (median) {
157      note_buffer = new_fvec (median, 1);
158      note_buffer2 = new_fvec (median, 1);
159  }
160
161  examples_common_process(aubio_process, process_print);
162
163  send_noteon (curnote, 0);
164  del_aubio_pitchdetection (pitchdet);
165  if (median) {
166      del_fvec (note_buffer);
167      del_fvec (note_buffer2);
168  }
169  del_fvec (pitch_obuf);
170
171  examples_common_del();
172  debug("End of program.\n");
173  fflush(stderr);
174  return 0;
175}
176
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