source: examples/aubioquiet.c @ 020d80e

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5pitchshiftsamplertimestretchyinfft+
Last change on this file since 020d80e was c423c3d, checked in by Paul Brossier <piem@piem.org>, 15 years ago

examples/: use native aubio smpl_t for aubio_process_func_t

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1/*
2   Copyright (C) 2003 Paul Brossier
3
4   This program is free software; you can redistribute it and/or modify
5   it under the terms of the GNU General Public License as published by
6   the Free Software Foundation; either version 2 of the License, or
7   (at your option) any later version.
8
9   This program is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12   GNU General Public License for more details.
13
14   You should have received a copy of the GNU General Public License
15   along with this program; if not, write to the Free Software
16   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17*/
18
19#include "utils.h"
20
21unsigned int pos = 0; /*frames%dspblocksize*/
22sint_t wassilence = 1, issilence;
23uint_t usepitch = 0;
24
25int aubio_process(smpl_t **input, smpl_t **output, int nframes);
26int aubio_process(smpl_t **input, smpl_t **output, int nframes) {
27  unsigned int i;       /*channels*/
28  unsigned int j;       /*frames*/
29  for (j=0;j<(unsigned)nframes;j++) {
30    if(usejack) {
31      for (i=0;i<channels;i++) {
32        /* write input to datanew */
33        fvec_write_sample(ibuf, input[i][j], i, pos);
34        /* put synthnew in output */
35        output[i][j] = fvec_read_sample(obuf, i, pos);
36      }
37    }
38    /*time for fft*/
39    if (pos == overlap_size-1) {         
40      /* test for silence */
41      if (aubio_silence_detection(ibuf, silence)==1) {
42        if (wassilence==1) issilence = 1;
43        else issilence = 2;
44        wassilence=1;
45      } else { 
46        if (wassilence<=0) issilence = 0;
47        else issilence = -1;
48        wassilence=0;
49      }
50      /* end of block loop */
51      pos = -1; /* so it will be zero next j loop */
52    }
53    pos++;
54  }
55  return 1;
56}
57
58void process_print (void);
59void process_print (void) {
60      int curframes = (frames - 4) > 0 ? frames -4 : 0;
61      if (issilence == -1) {
62          outmsg("NOISY: %f\n",curframes*overlap_size/(float)samplerate);
63      } else if (issilence == 2) { 
64          outmsg("QUIET: %f\n",curframes*overlap_size/(float)samplerate);
65      }
66}
67
68int main(int argc, char **argv) {
69  examples_common_init(argc,argv);
70  examples_common_process(aubio_process,process_print);
71  examples_common_del();
72  debug("End of program.\n");
73  fflush(stderr);
74  return 0;
75}
76
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