ref: 2a32644dd5405de231c87cb8e47275df85c580bd
dir: /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 ) { print_time (aubio_tempo_get_last (tempo)); outmsg ("\n"); } } 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; }