aubio 0.4.2~alpha

- Main Page
- Data Structures
- Files
- Examples

examples/aubiotrack.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_TEMPO 1
#define PROG_HAS_OUTPUT 1
#define PROG_HAS_JACK 1
#include "parse_args.h"
aubio_tempo_t * tempo;
aubio_wavetable_t *wavetable;
fvec_t * tempo_out;
smpl_t is_beat = 0;
uint_t is_silence = 0.;
void process_block(fvec_t * ibuf, fvec_t *obuf) {
aubio_tempo_do (tempo, ibuf, tempo_out);
is_beat = fvec_get_sample (tempo_out, 0);
if (silence_threshold != -90.)
is_silence = aubio_silence_detection(ibuf, silence_threshold);
if ( !usejack && ! sink_uri ) return;
fvec_zeros (obuf);
if ( is_beat && !is_silence ) {
aubio_wavetable_play ( wavetable );
} else {
aubio_wavetable_stop ( wavetable );
}
if (mix_input)
aubio_wavetable_do (wavetable, ibuf, obuf);
else
aubio_wavetable_do (wavetable, obuf, obuf);
}
void process_print (void) {
if ( is_beat && !is_silence ) {
outmsg("%f\n", aubio_tempo_get_last_s(tempo) );
}
}
int main(int argc, char **argv) {
// override general settings from utils.c
buffer_size = 1024;
hop_size = 512;
examples_common_init(argc,argv);
verbmsg ("using source: %s at %dHz\n", source_uri, samplerate);
verbmsg ("tempo method: %s, ", tempo_method);
verbmsg ("buffer_size: %d, ", buffer_size);
verbmsg ("hop_size: %d, ", hop_size);
verbmsg ("threshold: %f\n", onset_threshold);
tempo_out = new_fvec(2);
tempo = new_aubio_tempo(tempo_method, buffer_size, hop_size, samplerate);
// set silence threshold very low to output beats even during silence
// aubio_tempo_set_silence(tempo, -1000.);
if (onset_threshold != 0.) aubio_tempo_set_threshold (tempo, onset_threshold);
wavetable = new_aubio_wavetable (samplerate, hop_size);
aubio_wavetable_set_freq ( wavetable, 2450.);
//aubio_sampler_load (sampler, "/archives/sounds/woodblock.aiff");
examples_common_process((aubio_process_func_t)process_block,process_print);
del_aubio_tempo(tempo);
del_aubio_wavetable (wavetable);
del_fvec(tempo_out);
examples_common_del();
return 0;
}