source: src/io/source_sndfile.c @ 3d2fe26

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5pitchshiftsamplertimestretchyinfft+
Last change on this file since 3d2fe26 was 3d2fe26, checked in by Paul Brossier <piem@piem.org>, 11 years ago

src/io/source_sndfile.{c,h}: fix include and prototype, bypass resampler for now

  • Property mode set to 100644
File size: 6.5 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 "fvec.h"
30#include "fmat.h"
31#include "source_sndfile.h"
32
33#include "temporal/resampler.h"
34
35#define MAX_CHANNELS 6
36#define MAX_SIZE 4096
37#define MAX_SAMPLES MAX_CHANNELS * MAX_SIZE
38
39struct _aubio_source_sndfile_t {
40  uint_t hop_size;
41  uint_t samplerate;
42  uint_t channels;
43
44  // some data about the file
45  char_t *path;
46  SNDFILE *handle;
47  int input_samplerate;
48  int input_channels;
49  int input_format;
50
51  // resampling stuff
52  smpl_t ratio;
53  uint_t input_hop_size;
54#ifdef HAVE_SAMPLERATE
55  aubio_resampler_t *resampler;
56  fvec_t *input_data;
57#endif /* HAVE_SAMPLERATE */
58
59  // some temporary memory for sndfile to write at
60  uint_t scratch_size;
61  smpl_t *scratch_data;
62};
63
64aubio_source_sndfile_t * new_aubio_source_sndfile(char_t * path, uint_t samplerate, uint_t hop_size) {
65  aubio_source_sndfile_t * s = AUBIO_NEW(aubio_source_sndfile_t);
66
67  if (path == NULL) {
68    AUBIO_ERR("Aborted opening null path\n");
69    return NULL;
70  }
71
72  s->hop_size = hop_size;
73  s->channels = 1;
74  s->path = path;
75
76  // try opening the file, geting the info in sfinfo
77  SF_INFO sfinfo;
78  AUBIO_MEMSET(&sfinfo, 0, sizeof (sfinfo));
79  s->handle = sf_open (s->path, SFM_READ, &sfinfo);
80
81  if (s->handle == NULL) {
82    /* show libsndfile err msg */
83    AUBIO_ERR("Failed opening %s: %s\n", s->path, sf_strerror (NULL));
84    goto beach;
85  }     
86
87  /* get input specs */
88  s->input_samplerate = sfinfo.samplerate;
89  s->input_channels   = sfinfo.channels;
90  s->input_format     = sfinfo.format;
91
92  if (samplerate == 0) {
93    samplerate = s->input_samplerate;
94    //AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);
95  }
96  s->samplerate = samplerate;
97  /* compute input block size required before resampling */
98  s->ratio = s->samplerate/(float)s->input_samplerate;
99  s->input_hop_size = (uint_t)FLOOR(s->hop_size / s->ratio + .5);
100
101  if (s->input_hop_size * s->input_channels > MAX_SAMPLES) {
102    AUBIO_ERR("Not able to process more than %d frames of %d channels\n",
103        MAX_SAMPLES / s->input_channels, s->input_channels);
104    goto beach;
105  }
106
107#ifdef HAVE_SAMPLERATE
108  s->resampler = NULL;
109  s->input_data = NULL;
110  if (s->ratio != 1) {
111    s->input_data = new_fvec(s->input_hop_size);
112    s->resampler = new_aubio_resampler(s->ratio, 4);
113    if (s->ratio > 1) {
114      // we would need to add a ring buffer for these
115      if ( (uint_t)(s->input_hop_size * s->ratio + .5)  != s->hop_size ) {
116        AUBIO_ERR("can not upsample from %d to %d\n", s->input_samplerate, s->samplerate);
117        goto beach;
118      }
119      AUBIO_WRN("upsampling %s from %d to % d\n", s->path, s->input_samplerate, s->samplerate);
120    }
121  }
122#else
123  if (s->ratio != 1) {
124    AUBIO_ERR("aubio was compiled without aubio_resampler\n");
125    goto beach;
126  }
127#endif /* HAVE_SAMPLERATE */
128
129  /* allocate data for de/interleaving reallocated when needed. */
130  s->scratch_size = s->input_hop_size * s->input_channels;
131  s->scratch_data = AUBIO_ARRAY(float,s->scratch_size);
132
133  return s;
134
135beach:
136  AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
137      s->path, s->samplerate, s->hop_size);
138  del_aubio_source_sndfile(s);
139  return NULL;
140}
141
142void aubio_source_sndfile_do(aubio_source_sndfile_t * s, fvec_t * read_data, uint_t * read){
143  uint_t i,j, input_channels = s->input_channels;
144  /* do actual reading */
145  sf_count_t read_samples = sf_read_float (s->handle, s->scratch_data, s->scratch_size);
146
147  smpl_t *data;
148
149#ifdef HAVE_SAMPLERATE
150  if (s->ratio != 1) {
151    data = s->input_data->data;
152  } else
153#endif /* HAVE_SAMPLERATE */
154  {
155    data = read_data->data;
156  }
157
158  /* de-interleaving and down-mixing data  */
159  for (j = 0; j < read_samples / input_channels; j++) {
160    data[j] = 0;
161    for (i = 0; i < input_channels; i++) {
162      data[j] += s->scratch_data[input_channels*j+i];
163    }
164    data[j] /= (smpl_t)input_channels;
165  }
166
167#ifdef HAVE_SAMPLERATE
168  if (s->resampler) {
169    aubio_resampler_do(s->resampler, s->input_data, read_data);
170  }
171#endif /* HAVE_SAMPLERATE */
172
173  *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
174}
175
176void aubio_source_sndfile_do_multi(aubio_source_sndfile_t * s, fmat_t * read_data, uint_t * read){
177  uint_t i,j, input_channels = s->input_channels;
178  /* do actual reading */
179  sf_count_t read_samples = sf_read_float (s->handle, s->scratch_data, s->scratch_size);
180
181  smpl_t **data;
182
183#ifdef HAVE_SAMPLERATE
184  if (s->ratio != 1) {
185    AUBIO_ERR("source_sndfile: no multi channel resampling yet");
186    return;
187    //data = s->input_data->data;
188  } else
189#endif /* HAVE_SAMPLERATE */
190  {
191    data = read_data->data;
192  }
193
194  /* de-interleaving data */
195  for (j = 0; j < read_samples / input_channels; j++) {
196    for (i = 0; i < input_channels; i++) {
197      data[i][j] = (smpl_t)s->scratch_data[input_channels*j+i];
198    }
199  }
200
201#ifdef HAVE_SAMPLERATE
202  if (s->resampler) {
203    //aubio_resampler_do(s->resampler, s->input_data, read_data);
204  }
205#endif /* HAVE_SAMPLERATE */
206
207  *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
208}
209
210uint_t aubio_source_sndfile_get_samplerate(aubio_source_sndfile_t * s) {
211  return s->samplerate;
212}
213
214uint_t aubio_source_sndfile_get_channels(aubio_source_sndfile_t * s) {
215  return s->input_channels;
216}
217
218uint_t aubio_source_sndfile_seek (aubio_source_sndfile_t * s, uint_t pos) {
219  uint_t resampled_pos = (uint_t)ROUND(pos * s->input_samplerate * 1. / s->samplerate);
220  return sf_seek (s->handle, resampled_pos, SEEK_SET);
221}
222
223void del_aubio_source_sndfile(aubio_source_sndfile_t * s){
224  if (!s) return;
225  if (sf_close(s->handle)) {
226    AUBIO_ERR("Error closing file %s: %s", s->path, sf_strerror (NULL));
227  }
228#ifdef HAVE_SAMPLERATE
229  if (s->resampler != NULL) {
230    del_aubio_resampler(s->resampler);
231  }
232  if (s->input_data) {
233    del_fvec(s->input_data);
234  }
235#endif /* HAVE_SAMPLERATE */
236  AUBIO_FREE(s->scratch_data);
237  AUBIO_FREE(s);
238}
239
240#endif /* HAVE_SNDFILE */
Note: See TracBrowser for help on using the repository browser.