aubio 0.4.2~alpha

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examples/aubioonset.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_ONSET 1
#define PROG_HAS_OUTPUT 1
#define PROG_HAS_JACK 1
#include "parse_args.h"
aubio_onset_t *o;
aubio_wavetable_t *wavetable;
fvec_t *onset;
smpl_t is_onset;
void process_block(fvec_t *ibuf, fvec_t *obuf)
{
aubio_onset_do (o, ibuf, onset);
is_onset = fvec_get_sample(onset, 0);
if ( !usejack && ! sink_uri ) return;
fvec_zeros(obuf);
if ( is_onset ) {
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_onset ) {
outmsg ("%f\n", aubio_onset_get_last_s (o) );
}
}
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 ("silence: %f, ", silence_threshold);
verbmsg ("threshold: %f\n", onset_threshold);
o = new_aubio_onset (onset_method, buffer_size, hop_size, samplerate);
if (onset_threshold != 0.)
aubio_onset_set_threshold (o, onset_threshold);
if (silence_threshold != -90.)
aubio_onset_set_silence (o, silence_threshold);
onset = new_fvec (1);
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_onset (o);
del_aubio_wavetable (wavetable);
del_fvec (onset);
examples_common_del();
return 0;
}