source: src/io/source_sndfile.c @ ae5d58a

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since ae5d58a was ae5d58a, checked in by Paul Brossier <piem@piem.org>, 4 years ago

src/io/*.{c,h}: added const qualifiers to unmodified pointers

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File size: 8.9 KB
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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
39#if !HAVE_AUBIO_DOUBLE
40#define aubio_sf_read_smpl sf_read_float
41#else /* HAVE_AUBIO_DOUBLE */
42#define aubio_sf_read_smpl sf_read_double
43#endif /* HAVE_AUBIO_DOUBLE */
44
45struct _aubio_source_sndfile_t {
46  uint_t hop_size;
47  uint_t samplerate;
48  uint_t channels;
49
50  // some data about the file
51  char_t *path;
52  SNDFILE *handle;
53  int input_samplerate;
54  int input_channels;
55  int input_format;
56
57  // resampling stuff
58  smpl_t ratio;
59  uint_t input_hop_size;
60#ifdef HAVE_SAMPLERATE
61  aubio_resampler_t *resampler;
62  fvec_t *input_data;
63#endif /* HAVE_SAMPLERATE */
64
65  // some temporary memory for sndfile to write at
66  uint_t scratch_size;
67  smpl_t *scratch_data;
68};
69
70aubio_source_sndfile_t * new_aubio_source_sndfile(const char_t * path, uint_t samplerate, uint_t hop_size) {
71  aubio_source_sndfile_t * s = AUBIO_NEW(aubio_source_sndfile_t);
72  SF_INFO sfinfo;
73
74  if (path == NULL) {
75    AUBIO_ERR("source_sndfile: Aborted opening null path\n");
76    goto beach;
77  }
78  if ((sint_t)samplerate < 0) {
79    AUBIO_ERR("source_sndfile: Can not open %s with samplerate %d\n", path, samplerate);
80    goto beach;
81  }
82  if ((sint_t)hop_size <= 0) {
83    AUBIO_ERR("source_sndfile: Can not open %s with hop_size %d\n", path, hop_size);
84    goto beach;
85  }
86
87  s->hop_size = hop_size;
88  s->channels = 1;
89  s->path = path;
90
91  // try opening the file, getting the info in sfinfo
92  AUBIO_MEMSET(&sfinfo, 0, sizeof (sfinfo));
93  s->handle = sf_open (s->path, SFM_READ, &sfinfo);
94
95  if (s->handle == NULL) {
96    /* show libsndfile err msg */
97    AUBIO_ERR("source_sndfile: Failed opening %s: %s\n", s->path, sf_strerror (NULL));
98    goto beach;
99  }
100
101  /* get input specs */
102  s->input_samplerate = sfinfo.samplerate;
103  s->input_channels   = sfinfo.channels;
104  s->input_format     = sfinfo.format;
105
106  if (samplerate == 0) {
107    samplerate = s->input_samplerate;
108    //AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);
109  }
110  s->samplerate = samplerate;
111  /* compute input block size required before resampling */
112  s->ratio = s->samplerate/(smpl_t)s->input_samplerate;
113  s->input_hop_size = (uint_t)FLOOR(s->hop_size / s->ratio + .5);
114
115  if (s->input_hop_size * s->input_channels > MAX_SAMPLES) {
116    AUBIO_ERR("source_sndfile: Not able to process more than %d frames of %d channels\n",
117        MAX_SAMPLES / s->input_channels, s->input_channels);
118    goto beach;
119  }
120
121#ifdef HAVE_SAMPLERATE
122  s->resampler = NULL;
123  s->input_data = NULL;
124  if (s->ratio != 1) {
125    s->input_data = new_fvec(s->input_hop_size);
126    s->resampler = new_aubio_resampler(s->ratio, 4);
127    if (s->ratio > 1) {
128      // we would need to add a ring buffer for these
129      if ( (uint_t)(s->input_hop_size * s->ratio + .5)  != s->hop_size ) {
130        AUBIO_ERR("source_sndfile: can not upsample %s from %d to %d\n", s->path,
131            s->input_samplerate, s->samplerate);
132        goto beach;
133      }
134      AUBIO_WRN("source_sndfile: upsampling %s from %d to %d\n", s->path,
135          s->input_samplerate, s->samplerate);
136    }
137  }
138#else
139  if (s->ratio != 1) {
140    AUBIO_ERR("source_sndfile: aubio was compiled without aubio_resampler\n");
141    goto beach;
142  }
143#endif /* HAVE_SAMPLERATE */
144
145  /* allocate data for de/interleaving reallocated when needed. */
146  s->scratch_size = s->input_hop_size * s->input_channels;
147  s->scratch_data = AUBIO_ARRAY(smpl_t, s->scratch_size);
148
149  return s;
150
151beach:
152  //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
153  //    s->path, s->samplerate, s->hop_size);
154  del_aubio_source_sndfile(s);
155  return NULL;
156}
157
158void aubio_source_sndfile_do(aubio_source_sndfile_t * s, fvec_t * read_data, uint_t * read){
159  uint_t i,j, input_channels = s->input_channels;
160  /* read from file into scratch_data */
161  sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data, s->scratch_size);
162
163  /* where to store de-interleaved data */
164  smpl_t *ptr_data;
165#ifdef HAVE_SAMPLERATE
166  if (s->ratio != 1) {
167    ptr_data = s->input_data->data;
168  } else
169#endif /* HAVE_SAMPLERATE */
170  {
171    ptr_data = read_data->data;
172  }
173
174  /* de-interleaving and down-mixing data  */
175  for (j = 0; j < read_samples / input_channels; j++) {
176    ptr_data[j] = 0;
177    for (i = 0; i < input_channels; i++) {
178      ptr_data[j] += s->scratch_data[input_channels*j+i];
179    }
180    ptr_data[j] /= (smpl_t)input_channels;
181  }
182
183#ifdef HAVE_SAMPLERATE
184  if (s->resampler) {
185    aubio_resampler_do(s->resampler, s->input_data, read_data);
186  }
187#endif /* HAVE_SAMPLERATE */
188
189  *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
190
191  if (*read < s->hop_size) {
192    for (j = *read; j < s->hop_size; j++) {
193      read_data->data[j] = 0;
194    }
195  }
196
197}
198
199void aubio_source_sndfile_do_multi(aubio_source_sndfile_t * s, fmat_t * read_data, uint_t * read){
200  uint_t i,j, input_channels = s->input_channels;
201  /* do actual reading */
202  sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data, s->scratch_size);
203
204  /* where to store de-interleaved data */
205  smpl_t **ptr_data;
206#ifdef HAVE_SAMPLERATE
207  if (s->ratio != 1) {
208    AUBIO_ERR("source_sndfile: no multi channel resampling yet\n");
209    return;
210    //ptr_data = s->input_data->data;
211  } else
212#endif /* HAVE_SAMPLERATE */
213  {
214    ptr_data = read_data->data;
215  }
216
217  if (read_data->height < input_channels) {
218    // destination matrix has less channels than the file; copy only first
219    // channels of the file, de-interleaving data
220    for (j = 0; j < read_samples / input_channels; j++) {
221      for (i = 0; i < read_data->height; i++) {
222        ptr_data[i][j] = s->scratch_data[j * input_channels + i];
223      }
224    }
225  } else {
226    // destination matrix has as many or more channels than the file; copy each
227    // channel from the file to the destination matrix, de-interleaving data
228    for (j = 0; j < read_samples / input_channels; j++) {
229      for (i = 0; i < input_channels; i++) {
230        ptr_data[i][j] = s->scratch_data[j * input_channels + i];
231      }
232    }
233  }
234
235  if (read_data->height > input_channels) {
236    // destination matrix has more channels than the file; copy last channel
237    // of the file to each additional channels, de-interleaving data
238    for (j = 0; j < read_samples / input_channels; j++) {
239      for (i = input_channels; i < read_data->height; i++) {
240        ptr_data[i][j] = s->scratch_data[j * input_channels + (input_channels - 1)];
241      }
242    }
243  }
244
245#ifdef HAVE_SAMPLERATE
246  if (s->resampler) {
247    //aubio_resampler_do(s->resampler, s->input_data, read_data);
248  }
249#endif /* HAVE_SAMPLERATE */
250
251  *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
252
253  if (*read < s->hop_size) {
254    for (i = 0; i < read_data->height; i++) {
255      for (j = *read; j < s->hop_size; j++) {
256        read_data->data[i][j] = 0.;
257      }
258    }
259  }
260
261}
262
263uint_t aubio_source_sndfile_get_samplerate(aubio_source_sndfile_t * s) {
264  return s->samplerate;
265}
266
267uint_t aubio_source_sndfile_get_channels(aubio_source_sndfile_t * s) {
268  return s->input_channels;
269}
270
271uint_t aubio_source_sndfile_seek (aubio_source_sndfile_t * s, uint_t pos) {
272  uint_t resampled_pos = (uint_t)ROUND(pos / s->ratio);
273  sf_count_t sf_ret = sf_seek (s->handle, resampled_pos, SEEK_SET);
274  if (sf_ret == -1) {
275    AUBIO_ERR("source_sndfile: Failed seeking %s at %d: %s\n", s->path, pos, sf_strerror (NULL));
276    return AUBIO_FAIL;
277  }
278  if (sf_ret != resampled_pos) {
279    AUBIO_ERR("source_sndfile: Tried seeking %s at %d, but got %d: %s\n",
280        s->path, resampled_pos, (uint_t)sf_ret, sf_strerror (NULL));
281    return AUBIO_FAIL;
282  }
283  return AUBIO_OK;
284}
285
286uint_t aubio_source_sndfile_close (aubio_source_sndfile_t *s) {
287  if (!s->handle) {
288    return AUBIO_FAIL;
289  }
290  if(sf_close(s->handle)) {
291    AUBIO_ERR("source_sndfile: Error closing file %s: %s\n", s->path, sf_strerror (NULL));
292    return AUBIO_FAIL;
293  }
294  return AUBIO_OK;
295}
296
297void del_aubio_source_sndfile(aubio_source_sndfile_t * s){
298  if (!s) return;
299  aubio_source_sndfile_close(s);
300#ifdef HAVE_SAMPLERATE
301  if (s->resampler != NULL) {
302    del_aubio_resampler(s->resampler);
303  }
304  if (s->input_data) {
305    del_fvec(s->input_data);
306  }
307#endif /* HAVE_SAMPLERATE */
308  AUBIO_FREE(s->scratch_data);
309  AUBIO_FREE(s);
310}
311
312#endif /* HAVE_SNDFILE */
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