source: src/io/source_sndfile.c @ a9c33a2

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5pitchshiftsamplertimestretchyinfft+
Last change on this file since a9c33a2 was 985d5c4, checked in by Paul Brossier <piem@piem.org>, 8 years ago

src/io/source_sndfile.c: approximate duration when resampling

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File size: 9.4 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  int duration;
57
58  // resampling stuff
59  smpl_t ratio;
60  uint_t input_hop_size;
61#ifdef HAVE_SAMPLERATE
62  aubio_resampler_t *resampler;
63  fvec_t *input_data;
64#endif /* HAVE_SAMPLERATE */
65
66  // some temporary memory for sndfile to write at
67  uint_t scratch_size;
68  smpl_t *scratch_data;
69};
70
71aubio_source_sndfile_t * new_aubio_source_sndfile(const char_t * path, uint_t samplerate, uint_t hop_size) {
72  aubio_source_sndfile_t * s = AUBIO_NEW(aubio_source_sndfile_t);
73  SF_INFO sfinfo;
74
75  if (path == NULL) {
76    AUBIO_ERR("source_sndfile: Aborted opening null path\n");
77    goto beach;
78  }
79  if ((sint_t)samplerate < 0) {
80    AUBIO_ERR("source_sndfile: Can not open %s with samplerate %d\n", path, samplerate);
81    goto beach;
82  }
83  if ((sint_t)hop_size <= 0) {
84    AUBIO_ERR("source_sndfile: Can not open %s with hop_size %d\n", path, hop_size);
85    goto beach;
86  }
87
88  s->hop_size = hop_size;
89  s->channels = 1;
90
91  if (s->path) AUBIO_FREE(s->path);
92  s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
93  strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
94
95  // try opening the file, getting the info in sfinfo
96  AUBIO_MEMSET(&sfinfo, 0, sizeof (sfinfo));
97  s->handle = sf_open (s->path, SFM_READ, &sfinfo);
98
99  if (s->handle == NULL) {
100    /* show libsndfile err msg */
101    AUBIO_ERR("source_sndfile: Failed opening %s: %s\n", s->path, sf_strerror (NULL));
102    goto beach;
103  }
104
105  /* get input specs */
106  s->input_samplerate = sfinfo.samplerate;
107  s->input_channels   = sfinfo.channels;
108  s->input_format     = sfinfo.format;
109  s->duration         = sfinfo.frames;
110
111  if (samplerate == 0) {
112    s->samplerate = s->input_samplerate;
113    //AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);
114  } else {
115    s->samplerate = samplerate;
116  }
117  /* compute input block size required before resampling */
118  s->ratio = s->samplerate/(smpl_t)s->input_samplerate;
119  s->input_hop_size = (uint_t)FLOOR(s->hop_size / s->ratio + .5);
120
121  if (s->input_hop_size * s->input_channels > MAX_SAMPLES) {
122    AUBIO_ERR("source_sndfile: Not able to process more than %d frames of %d channels\n",
123        MAX_SAMPLES / s->input_channels, s->input_channels);
124    goto beach;
125  }
126
127#ifdef HAVE_SAMPLERATE
128  s->resampler = NULL;
129  s->input_data = NULL;
130  if (s->ratio != 1) {
131    s->input_data = new_fvec(s->input_hop_size);
132    s->resampler = new_aubio_resampler(s->ratio, 4);
133    if (s->ratio > 1) {
134      // we would need to add a ring buffer for these
135      if ( (uint_t)(s->input_hop_size * s->ratio + .5)  != s->hop_size ) {
136        AUBIO_ERR("source_sndfile: can not upsample %s from %d to %d\n", s->path,
137            s->input_samplerate, s->samplerate);
138        goto beach;
139      }
140      AUBIO_WRN("source_sndfile: upsampling %s from %d to %d\n", s->path,
141          s->input_samplerate, s->samplerate);
142    }
143    s->duration = (uint_t)FLOOR(s->duration * s->ratio);
144  }
145#else
146  if (s->ratio != 1) {
147    AUBIO_ERR("source_sndfile: aubio was compiled without aubio_resampler\n");
148    goto beach;
149  }
150#endif /* HAVE_SAMPLERATE */
151
152  /* allocate data for de/interleaving reallocated when needed. */
153  s->scratch_size = s->input_hop_size * s->input_channels;
154  s->scratch_data = AUBIO_ARRAY(smpl_t, s->scratch_size);
155
156  return s;
157
158beach:
159  //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
160  //    s->path, s->samplerate, s->hop_size);
161  del_aubio_source_sndfile(s);
162  return NULL;
163}
164
165void aubio_source_sndfile_do(aubio_source_sndfile_t * s, fvec_t * read_data, uint_t * read){
166  uint_t i,j, input_channels = s->input_channels;
167  /* read from file into scratch_data */
168  sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data, s->scratch_size);
169
170  /* where to store de-interleaved data */
171  smpl_t *ptr_data;
172#ifdef HAVE_SAMPLERATE
173  if (s->ratio != 1) {
174    ptr_data = s->input_data->data;
175  } else
176#endif /* HAVE_SAMPLERATE */
177  {
178    ptr_data = read_data->data;
179  }
180
181  /* de-interleaving and down-mixing data  */
182  for (j = 0; j < read_samples / input_channels; j++) {
183    ptr_data[j] = 0;
184    for (i = 0; i < input_channels; i++) {
185      ptr_data[j] += s->scratch_data[input_channels*j+i];
186    }
187    ptr_data[j] /= (smpl_t)input_channels;
188  }
189
190#ifdef HAVE_SAMPLERATE
191  if (s->resampler) {
192    aubio_resampler_do(s->resampler, s->input_data, read_data);
193  }
194#endif /* HAVE_SAMPLERATE */
195
196  *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
197
198  if (*read < s->hop_size) {
199    for (j = *read; j < s->hop_size; j++) {
200      read_data->data[j] = 0;
201    }
202  }
203
204}
205
206void aubio_source_sndfile_do_multi(aubio_source_sndfile_t * s, fmat_t * read_data, uint_t * read){
207  uint_t i,j, input_channels = s->input_channels;
208  /* do actual reading */
209  sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data, s->scratch_size);
210
211  /* where to store de-interleaved data */
212  smpl_t **ptr_data;
213#ifdef HAVE_SAMPLERATE
214  if (s->ratio != 1) {
215    AUBIO_ERR("source_sndfile: no multi channel resampling yet\n");
216    return;
217    //ptr_data = s->input_data->data;
218  } else
219#endif /* HAVE_SAMPLERATE */
220  {
221    ptr_data = read_data->data;
222  }
223
224  if (read_data->height < input_channels) {
225    // destination matrix has less channels than the file; copy only first
226    // channels of the file, de-interleaving data
227    for (j = 0; j < read_samples / input_channels; j++) {
228      for (i = 0; i < read_data->height; i++) {
229        ptr_data[i][j] = s->scratch_data[j * input_channels + i];
230      }
231    }
232  } else {
233    // destination matrix has as many or more channels than the file; copy each
234    // channel from the file to the destination matrix, de-interleaving data
235    for (j = 0; j < read_samples / input_channels; j++) {
236      for (i = 0; i < input_channels; i++) {
237        ptr_data[i][j] = s->scratch_data[j * input_channels + i];
238      }
239    }
240  }
241
242  if (read_data->height > input_channels) {
243    // destination matrix has more channels than the file; copy last channel
244    // of the file to each additional channels, de-interleaving data
245    for (j = 0; j < read_samples / input_channels; j++) {
246      for (i = input_channels; i < read_data->height; i++) {
247        ptr_data[i][j] = s->scratch_data[j * input_channels + (input_channels - 1)];
248      }
249    }
250  }
251
252#ifdef HAVE_SAMPLERATE
253  if (s->resampler) {
254    //aubio_resampler_do(s->resampler, s->input_data, read_data);
255  }
256#endif /* HAVE_SAMPLERATE */
257
258  *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
259
260  if (*read < s->hop_size) {
261    for (i = 0; i < read_data->height; i++) {
262      for (j = *read; j < s->hop_size; j++) {
263        read_data->data[i][j] = 0.;
264      }
265    }
266  }
267
268}
269
270uint_t aubio_source_sndfile_get_samplerate(aubio_source_sndfile_t * s) {
271  return s->samplerate;
272}
273
274uint_t aubio_source_sndfile_get_channels(aubio_source_sndfile_t * s) {
275  return s->input_channels;
276}
277
278uint_t aubio_source_sndfile_get_duration (const aubio_source_sndfile_t * s) {
279  if (s && s->duration) {
280    return s->duration;
281  }
282  return 0;
283}
284
285uint_t aubio_source_sndfile_seek (aubio_source_sndfile_t * s, uint_t pos) {
286  uint_t resampled_pos = (uint_t)ROUND(pos / s->ratio);
287  sf_count_t sf_ret = sf_seek (s->handle, resampled_pos, SEEK_SET);
288  if (sf_ret == -1) {
289    AUBIO_ERR("source_sndfile: Failed seeking %s at %d: %s\n", s->path, pos, sf_strerror (NULL));
290    return AUBIO_FAIL;
291  }
292  if (sf_ret != resampled_pos) {
293    AUBIO_ERR("source_sndfile: Tried seeking %s at %d, but got %d: %s\n",
294        s->path, resampled_pos, (uint_t)sf_ret, sf_strerror (NULL));
295    return AUBIO_FAIL;
296  }
297  return AUBIO_OK;
298}
299
300uint_t aubio_source_sndfile_close (aubio_source_sndfile_t *s) {
301  if (!s->handle) {
302    return AUBIO_FAIL;
303  }
304  if(sf_close(s->handle)) {
305    AUBIO_ERR("source_sndfile: Error closing file %s: %s\n", s->path, sf_strerror (NULL));
306    return AUBIO_FAIL;
307  }
308  return AUBIO_OK;
309}
310
311void del_aubio_source_sndfile(aubio_source_sndfile_t * s){
312  if (!s) return;
313  aubio_source_sndfile_close(s);
314#ifdef HAVE_SAMPLERATE
315  if (s->resampler != NULL) {
316    del_aubio_resampler(s->resampler);
317  }
318  if (s->input_data) {
319    del_fvec(s->input_data);
320  }
321#endif /* HAVE_SAMPLERATE */
322  if (s->path) AUBIO_FREE(s->path);
323  AUBIO_FREE(s->scratch_data);
324  AUBIO_FREE(s);
325}
326
327#endif /* HAVE_SNDFILE */
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