aubio: examples/aubionotes.c

aubio 0.4.9

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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/>.
*/
#include "utils.h"
#define PROG_HAS_PITCH 1
#define PROG_HAS_ONSET 1
#define PROG_HAS_NOTES 1
#define PROG_HAS_SILENCE 1
#define PROG_HAS_JACK 1
// TODO add PROG_HAS_OUTPUT
#include "parse_args.h"
aubio_notes_t *notes;
smpl_t lastmidi = 0.;
void process_block (fvec_t *ibuf, fvec_t *obuf)
{
aubio_notes_do (notes, ibuf, obuf);
// did we get a note off?
if (obuf->data[2] != 0) {
lastmidi = obuf->data[2];
send_noteon(lastmidi, 0);
}
// did we get a note on?
if (obuf->data[0] != 0) {
lastmidi = obuf->data[0];
send_noteon(lastmidi, obuf->data[1]);
}
}
void process_print (void)
{
//if (verbose) outmsg("%f\n",pitch_obuf->data[0]);
}
int main(int argc, char **argv) {
int ret = 0;
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);
notes = new_aubio_notes ("default", buffer_size, hop_size, samplerate);
if (notes == NULL) { ret = 1; goto beach; }
if (onset_minioi != 0.) {
aubio_notes_set_minioi_ms(notes, onset_minioi);
}
if (onset_threshold != 0.) {
errmsg ("warning: onset threshold not supported yet\n");
//aubio_onset_set_threshold(aubio_notes_get_aubio_onset(o), onset_threshold);
}
if (silence_threshold != -90.) {
if (aubio_notes_set_silence (notes, silence_threshold) != 0) {
errmsg ("failed setting notes silence threshold to %.2f\n",
silence_threshold);
}
}
if (release_drop != 10.) {
if (aubio_notes_set_release_drop (notes, release_drop) != 0) {
errmsg ("failed setting notes release drop to %.2f\n",
release_drop);
}
}
examples_common_process(process_block, process_print);
// send a last note off if required
if (lastmidi) {
send_noteon (lastmidi, 0);
}
del_aubio_notes (notes);
beach:
examples_common_del();
return ret;
}
aubio_notes_set_minioi_ms
uint_t aubio_notes_set_minioi_ms(aubio_notes_t *o, smpl_t minioi_ms)
set notes detection minimum inter-onset interval, in millisecond
aubio_notes_do
void aubio_notes_do(aubio_notes_t *o, const fvec_t *input, fvec_t *output)
execute note detection on an input signal frame
aubio_notes_set_release_drop
uint_t aubio_notes_set_release_drop(aubio_notes_t *o, smpl_t release_drop)
set note release drop level, in dB
del_aubio_notes
void del_aubio_notes(aubio_notes_t *o)
delete notes detection object
new_aubio_notes
aubio_notes_t * new_aubio_notes(const char_t *method, uint_t buf_size, uint_t hop_size, uint_t samplerate)
create notes detection object
aubio_notes_set_silence
uint_t aubio_notes_set_silence(aubio_notes_t *o, smpl_t silence)
set notes detection silence threshold
aubio_notes_t
struct _aubio_notes_t aubio_notes_t
notes detection object
Definition notes.h:35
fvec_t
Buffer for real data.
Definition fvec.h:67
fvec_t::data
smpl_t * data
data vector of length fvec_t.length
Definition fvec.h:69
smpl_t
float smpl_t
short sample format (32 or 64 bits)
Definition types.h:41