/*  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_ONSET 1#define PROG_HAS_SILENCE 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 );    /* send a midi tap (default to C0) out to the midi output */    if (usejack) send_noteon(miditap_note, miditap_velo);  } 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) {  int ret = 0;  // 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);  if (tempo == NULL) { ret = 1; goto beach; }  // 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);  if (onset_minioi != 0.) errmsg ("warning: minioio not supported yet\n");   wavetable = new_aubio_wavetable (samplerate, hop_size);  aubio_wavetable_set_freq ( wavetable, 2450.);  //aubio_sampler_load (sampler, "/archives/sounds/woodblock.aiff");   examples_common_process(process_block, process_print);   // send a last note off  if (usejack) {    send_noteon (miditap_note, 0);  }   del_aubio_tempo(tempo);  del_aubio_wavetable (wavetable);  del_fvec(tempo_out); beach:  examples_common_del();  return ret;}