aubio 0.4.2~alpha

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examples/aubionotes.c
/*
Copyright (C) 2003-2013 Paul Brossier <piem@aubio.org>
This file is part of aubio.
aubio is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
aubio is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with aubio. If not, see <http://www.gnu.org/licenses/>.
*/
#define AUBIO_UNSTABLE 1 // for fvec_median
#include "utils.h"
#define PROG_HAS_PITCH 1
#define PROG_HAS_ONSET 1
#define PROG_HAS_JACK 1
// TODO add PROG_HAS_OUTPUT
#include "parse_args.h"
uint_t median = 6;
fvec_t *note_buffer;
fvec_t *note_buffer2;
smpl_t curnote = 0.;
smpl_t newnote = 0.;
uint_t isready = 0;
aubio_pitch_t *pitch;
aubio_onset_t *o;
fvec_t *onset;
fvec_t *pitch_obuf;
/** append new note candidate to the note_buffer and return filtered value. we
* need to copy the input array as fvec_median destroy its input data.*/
void note_append (fvec_t * note_buffer, smpl_t curnote);
uint_t get_note (fvec_t * note_buffer, fvec_t * note_buffer2);
void process_block (fvec_t *ibuf, fvec_t *obuf)
{
smpl_t new_pitch, curlevel;
fvec_zeros(obuf);
aubio_onset_do(o, ibuf, onset);
aubio_pitch_do (pitch, ibuf, pitch_obuf);
new_pitch = fvec_get_sample(pitch_obuf, 0);
if(median){
note_append(note_buffer, new_pitch);
}
/* curlevel is negatif or 1 if silence */
curlevel = aubio_level_detection(ibuf, silence_threshold);
if (fvec_get_sample(onset, 0)) {
/* test for silence */
if (curlevel == 1.) {
if (median) isready = 0;
/* send note off */
send_noteon(curnote,0);
} else {
if (median) {
isready = 1;
} else {
/* kill old note */
send_noteon(curnote,0);
/* get and send new one */
send_noteon(new_pitch,127+(int)floor(curlevel));
curnote = new_pitch;
}
}
} else {
if (median) {
if (isready > 0)
isready++;
if (isready == median)
{
/* kill old note */
send_noteon(curnote,0);
newnote = get_note(note_buffer, note_buffer2);
curnote = newnote;
/* get and send new one */
if (curnote>45){
send_noteon(curnote,127+(int)floor(curlevel));
}
}
} // if median
}
}
void process_print (void)
{
//if (verbose) outmsg("%f\n",pitch_obuf->data[0]);
}
void
note_append (fvec_t * note_buffer, smpl_t curnote)
{
uint_t i = 0;
for (i = 0; i < note_buffer->length - 1; i++) {
note_buffer->data[i] = note_buffer->data[i + 1];
}
note_buffer->data[note_buffer->length - 1] = curnote;
return;
}
uint_t
get_note (fvec_t * note_buffer, fvec_t * note_buffer2)
{
uint_t i;
for (i = 0; i < note_buffer->length; i++) {
note_buffer2->data[i] = note_buffer->data[i];
}
return fvec_median (note_buffer2);
}
int main(int argc, char **argv) {
examples_common_init(argc,argv);
verbmsg ("using source: %s at %dHz\n", source_uri, samplerate);
verbmsg ("onset method: %s, ", onset_method);
verbmsg ("buffer_size: %d, ", buffer_size);
verbmsg ("hop_size: %d, ", hop_size);
verbmsg ("threshold: %f\n", onset_threshold);
verbmsg ("pitch method: %s, ", pitch_method);
verbmsg ("buffer_size: %d, ", buffer_size * 4);
verbmsg ("hop_size: %d, ", hop_size);
verbmsg ("tolerance: %f\n", pitch_tolerance);
o = new_aubio_onset (onset_method, buffer_size, hop_size, samplerate);
if (onset_threshold != 0.) aubio_onset_set_threshold (o, onset_threshold);
onset = new_fvec (1);
pitch = new_aubio_pitch (pitch_method, buffer_size * 4, hop_size, samplerate);
if (pitch_tolerance != 0.) aubio_pitch_set_tolerance (pitch, pitch_tolerance);
pitch_obuf = new_fvec (1);
if (median) {
note_buffer = new_fvec (median);
note_buffer2 = new_fvec (median);
}
examples_common_process((aubio_process_func_t)process_block, process_print);
// send a last note off
send_noteon (curnote, 0);
del_aubio_pitch (pitch);
if (median) {
del_fvec (note_buffer);
del_fvec (note_buffer2);
}
del_fvec (pitch_obuf);
examples_common_del();
return 0;
}