source: src/io/source_sndfile.c @ 420962e

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5pitchshiftsamplertimestretchyinfft+
Last change on this file since 420962e was 420962e, checked in by Paul Brossier <piem@piem.org>, 12 years ago

src/io/source_sndfile.c: avoid segfault when deleting NULL

  • Property mode set to 100644
File size: 3.4 KB
Line 
1/*
2  Copyright (C) 2012 Paul Brossier <piem@aubio.org>
3
4  This file is part of aubio.
5
6  aubio is free software: you can redistribute it and/or modify
7  it under the terms of the GNU General Public License as published by
8  the Free Software Foundation, either version 3 of the License, or
9  (at your option) any later version.
10
11  aubio is distributed in the hope that it will be useful,
12  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  GNU General Public License for more details.
15
16  You should have received a copy of the GNU General Public License
17  along with aubio.  If not, see <http://www.gnu.org/licenses/>.
18
19*/
20
21
22#include "config.h"
23
24#ifdef HAVE_SNDFILE
25
26#include <sndfile.h>
27
28#include "aubio_priv.h"
29#include "source_sndfile.h"
30#include "fvec.h"
31
32#define MAX_CHANNELS 6
33#define MAX_SIZE 4096
34
35struct _aubio_source_sndfile_t {
36  uint_t hop_size;
37  uint_t samplerate;
38  uint_t channels;
39  int input_samplerate;
40  int input_channels;
41  int input_format;
42  char_t *path;
43  SNDFILE *handle;
44  uint_t scratch_size;
45  smpl_t *scratch_data;
46};
47
48aubio_source_sndfile_t * new_aubio_source_sndfile(char_t * path, uint_t samplerate, uint_t hop_size) {
49  aubio_source_sndfile_t * s = AUBIO_NEW(aubio_source_sndfile_t);
50
51  if (path == NULL) {
52    AUBIO_ERR("Aborted opening null path\n");
53    return NULL;
54  }
55
56  s->hop_size = hop_size;
57  s->samplerate = samplerate;
58  s->channels = 1;
59  s->path = path;
60
61  // try opening the file, geting the info in sfinfo
62  SF_INFO sfinfo;
63  AUBIO_MEMSET(&sfinfo, 0, sizeof (sfinfo));
64  s->handle = sf_open (s->path, SFM_READ, &sfinfo);
65
66  if (s->handle == NULL) {
67    /* show libsndfile err msg */
68    AUBIO_ERR("Failed opening %s: %s\n", s->path, sf_strerror (NULL));
69    return NULL;
70  }     
71
72  if (sfinfo.channels > MAX_CHANNELS) { 
73    AUBIO_ERR("Not able to process more than %d channels\n", MAX_CHANNELS);
74    return NULL;
75  }
76
77  /* get input specs */
78  s->input_samplerate = sfinfo.samplerate;
79  s->input_channels   = sfinfo.channels;
80  s->input_format     = sfinfo.format;
81
82  if (s->samplerate != s->input_samplerate) {
83    AUBIO_ERR("resampling not implemented yet\n");
84    return NULL;
85  }
86 
87  s->scratch_size = s->hop_size*s->input_channels;
88  /* allocate data for de/interleaving reallocated when needed. */
89  if (s->scratch_size >= MAX_SIZE * MAX_CHANNELS) {
90    AUBIO_ERR("%d x %d exceeds maximum aubio_source_sndfile buffer size %d\n",
91        s->hop_size, s->input_channels, MAX_CHANNELS * MAX_CHANNELS);
92    return NULL;
93  }
94  s->scratch_data = AUBIO_ARRAY(float,s->scratch_size);
95
96  return s;
97}
98
99void aubio_source_sndfile_do(aubio_source_sndfile_t * s, fvec_t * read_data, uint_t * read){
100  sf_count_t read_frames;
101  int i,j, input_channels = s->input_channels;
102  int aread;
103  /* do actual reading */
104  read_frames = sf_read_float (s->handle, s->scratch_data, s->scratch_size);
105
106  aread = (int)FLOOR(read_frames/(float)input_channels);
107
108  /* de-interleaving and down-mixing data  */
109  for (j = 0; j < aread; j++) {
110    read_data->data[j] = 0;
111    for (i = 0; i < input_channels; i++) {
112      read_data->data[j] += (smpl_t)s->scratch_data[input_channels*j+i];
113    }
114    read_data->data[j] /= (smpl_t)input_channels;
115  }
116  *read = aread;
117}
118
119void del_aubio_source_sndfile(aubio_source_sndfile_t * s){
120  if (!s) return;
121  if (sf_close(s->handle)) {
122    AUBIO_ERR("Error closing file %s: %s", s->path, sf_strerror (NULL));
123  }
124  AUBIO_FREE(s->scratch_data);
125  AUBIO_FREE(s);
126}
127
128#endif /* HAVE_SNDFILE */
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