aubio: examples/aubiopitch.c

aubio 0.4.7

examples/aubiopitch.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_OUTPUT 1
#define PROG_HAS_SILENCE 1
#define PROG_HAS_JACK 1
#include "parse_args.h"
aubio_pitch_t *o;
aubio_wavetable_t *wavetable;
fvec_t *pitch;
void process_block(fvec_t * ibuf, fvec_t * obuf)
{
smpl_t freq;
aubio_pitch_do (o, ibuf, pitch);
if ( !usejack && ! sink_uri ) return;
fvec_zeros(obuf);
freq = fvec_get_sample(pitch, 0);
aubio_wavetable_set_amp ( wavetable, aubio_level_lin (ibuf) );
aubio_wavetable_set_freq ( wavetable, freq );
if (mix_input)
aubio_wavetable_do (wavetable, ibuf, obuf);
else
aubio_wavetable_do (wavetable, obuf, obuf);
}
void process_print (void)
{
smpl_t pitch_found = fvec_get_sample(pitch, 0);
print_time(blocks * hop_size);
outmsg(" %f\n", pitch_found);
}
int main(int argc, char **argv) {
int ret = 0;
buffer_size = 2048;
examples_common_init(argc,argv);
verbmsg ("using source: %s at %dHz\n", source_uri, samplerate);
verbmsg ("pitch method: %s, ", pitch_method);
verbmsg ("pitch unit: %s, ", pitch_unit);
verbmsg ("buffer_size: %d, ", buffer_size);
verbmsg ("hop_size: %d, ", hop_size);
verbmsg ("tolerance: %f\n", pitch_tolerance);
o = new_aubio_pitch (pitch_method, buffer_size, hop_size, samplerate);
if (o == NULL) { ret = 1; goto beach; }
if (pitch_tolerance != 0.)
aubio_pitch_set_tolerance (o, pitch_tolerance);
if (silence_threshold != -90.)
aubio_pitch_set_silence (o, silence_threshold);
if (pitch_unit != NULL)
aubio_pitch_set_unit (o, pitch_unit);
pitch = new_fvec (1);
wavetable = new_aubio_wavetable (samplerate, hop_size);
aubio_wavetable_play ( wavetable );
examples_common_process((aubio_process_func_t)process_block,process_print);
del_aubio_pitch (o);
del_aubio_wavetable (wavetable);
del_fvec (pitch);
beach:
examples_common_del();
return ret;
}