ref: 4ef9a9bd111ca11dbcf7da6dfdad77538525d83e
dir: /examples/aubioonset.c/
/* Copyright (C) 2003 Paul Brossier This program 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 2 of the License, or (at your option) any later version. This program 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 this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "utils.h" unsigned int pos = 0; /*frames%dspblocksize*/ aubio_onset_t *o; fvec_t *onset; static int aubio_process(smpl_t **input, smpl_t **output, int nframes) { unsigned int i; /*channels*/ unsigned int j; /*frames*/ for (j=0;j<(unsigned)nframes;j++) { if(usejack) { for (i=0;i<channels;i++) { /* write input to datanew */ fvec_write_sample(ibuf, input[i][j], i, pos); /* put synthnew in output */ output[i][j] = fvec_read_sample(obuf, i, pos); } } /*time for fft*/ if (pos == overlap_size-1) { /* block loop */ aubio_onset_do (o, ibuf, onset); if (fvec_read_sample(onset, 0, 0)) { for (pos = 0; pos < overlap_size; pos++){ obuf->data[0][pos] = woodblock->data[0][pos]; } } else { for (pos = 0; pos < overlap_size; pos++) { obuf->data[0][pos] = 0.; } } /* end of block loop */ pos = -1; /* so it will be zero next j loop */ } pos++; } return 1; } static void process_print (void) { /* output times in seconds, taking back some * delay to ensure the label is _before_ the * actual onset */ if (!verbose && usejack) return; smpl_t onset_found = fvec_read_sample(onset, 0, 0); if (onset_found) { if(frames >= 4) { outmsg("%f\n",(frames - frames_delay + onset_found) *overlap_size/(float)samplerate); } else if (frames < frames_delay) { outmsg("%f\n",0.); } } } int main(int argc, char **argv) { frames_delay = 3; examples_common_init(argc,argv); o = new_aubio_onset (onset_mode, buffer_size, overlap_size, channels, samplerate); if (threshold != 0.) aubio_onset_set_threshold (o, threshold); onset = new_fvec (1, channels); examples_common_process(aubio_process,process_print); del_aubio_onset (o); del_fvec (onset); examples_common_del(); debug("End of program.\n"); fflush(stderr); return 0; }