source: examples/aubioquiet.c @ 740f06b

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since 740f06b was d4c5de7, checked in by Paul Brossier <piem@piem.org>, 11 years ago

examples/: make use of aubio_onset in aubioonset and aubionotes, simplify, keep only general stuff in utils

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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;
23
24int aubio_process(smpl_t **input, smpl_t **output, int nframes);
25int aubio_process(smpl_t **input, smpl_t **output, int nframes) {
26  unsigned int i;       /*channels*/
27  unsigned int j;       /*frames*/
28  for (j=0;j<(unsigned)nframes;j++) {
29    if(usejack) {
30      for (i=0;i<channels;i++) {
31        /* write input to datanew */
32        fvec_write_sample(ibuf, input[i][j], i, pos);
33        /* put synthnew in output */
34        output[i][j] = fvec_read_sample(obuf, i, pos);
35      }
36    }
37    /*time for fft*/
38    if (pos == overlap_size-1) {         
39      /* test for silence */
40      if (aubio_silence_detection(ibuf, silence)==1) {
41        if (wassilence==1) issilence = 1;
42        else issilence = 2;
43        wassilence=1;
44      } else { 
45        if (wassilence<=0) issilence = 0;
46        else issilence = -1;
47        wassilence=0;
48      }
49      /* end of block loop */
50      pos = -1; /* so it will be zero next j loop */
51    }
52    pos++;
53  }
54  return 1;
55}
56
57static void process_print (void) {
58      int curframes = (frames - 4) > 0 ? frames -4 : 0;
59      if (issilence == -1) {
60          outmsg("NOISY: %f\n",curframes*overlap_size/(float)samplerate);
61      } else if (issilence == 2) { 
62          outmsg("QUIET: %f\n",curframes*overlap_size/(float)samplerate);
63      }
64}
65
66int main(int argc, char **argv) {
67  examples_common_init(argc,argv);
68  examples_common_process(aubio_process,process_print);
69  examples_common_del();
70  debug("End of program.\n");
71  fflush(stderr);
72  return 0;
73}
74
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