source: src/io/source_sndfile.c @ 18a96aa

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchsampleryinfft+
Last change on this file since 18a96aa was 18a96aa, checked in by Paul Brossier <piem@piem.org>, 3 years ago

src/io/source_sndfile.c

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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_SIZE 4096
36#define MAX_SAMPLES AUBIO_MAX_CHANNELS * MAX_SIZE
37
38#if !HAVE_AUBIO_DOUBLE
39#define aubio_sf_read_smpl sf_read_float
40#else /* HAVE_AUBIO_DOUBLE */
41#define aubio_sf_read_smpl sf_read_double
42#endif /* HAVE_AUBIO_DOUBLE */
43
44struct _aubio_source_sndfile_t {
45  uint_t hop_size;
46  uint_t samplerate;
47  uint_t channels;
48
49  // some data about the file
50  char_t *path;
51  SNDFILE *handle;
52  int input_samplerate;
53  int input_channels;
54  int input_format;
55  int duration;
56
57  // resampling stuff
58  smpl_t ratio;
59  uint_t input_hop_size;
60#ifdef HAVE_SAMPLERATE
61  aubio_resampler_t **resamplers;
62  fvec_t *input_data;
63  fmat_t *input_mat;
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,
102        sf_strerror (NULL));
103    goto beach;
104  }
105
106  /* get input specs */
107  s->input_samplerate = sfinfo.samplerate;
108  s->input_channels   = sfinfo.channels;
109  s->input_format     = sfinfo.format;
110  s->duration         = sfinfo.frames;
111
112  if (samplerate == 0) {
113    s->samplerate = s->input_samplerate;
114    //AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);
115  } else {
116    s->samplerate = samplerate;
117  }
118  /* compute input block size required before resampling */
119  s->ratio = s->samplerate/(smpl_t)s->input_samplerate;
120  s->input_hop_size = (uint_t)FLOOR(s->hop_size / s->ratio + .5);
121
122  if (s->input_hop_size * s->input_channels > MAX_SAMPLES) {
123    AUBIO_ERR("source_sndfile: Not able to process more than %d frames of %d channels\n",
124        MAX_SAMPLES / s->input_channels, s->input_channels);
125    goto beach;
126  }
127
128#ifdef HAVE_SAMPLERATE
129  s->input_data = NULL;
130  s->input_mat = NULL;
131  s->resamplers = NULL;
132  if (s->ratio != 1) {
133    uint_t i;
134    s->resamplers = AUBIO_ARRAY(aubio_resampler_t*, s->input_channels);
135    s->input_data = new_fvec(s->input_hop_size);
136    s->input_mat = new_fmat(s->input_channels, s->input_hop_size);
137    for (i = 0; i < (uint_t)s->input_channels; i++) {
138      s->resamplers[i] = new_aubio_resampler(s->ratio, 4);
139    }
140    if (s->ratio > 1) {
141      // we would need to add a ring buffer for these
142      if ( (uint_t)FLOOR(s->input_hop_size * s->ratio + .5)  != s->hop_size ) {
143        AUBIO_ERR("source_sndfile: can not upsample %s from %d to %d\n", s->path,
144            s->input_samplerate, s->samplerate);
145        goto beach;
146      }
147      AUBIO_WRN("source_sndfile: upsampling %s from %d to %d\n", s->path,
148          s->input_samplerate, s->samplerate);
149    }
150    s->duration = (uint_t)FLOOR(s->duration * s->ratio);
151  }
152#else
153  if (s->ratio != 1) {
154    AUBIO_ERR("source_sndfile: aubio was compiled without aubio_resampler\n");
155    goto beach;
156  }
157#endif /* HAVE_SAMPLERATE */
158
159  /* allocate data for de/interleaving reallocated when needed. */
160  s->scratch_size = s->input_hop_size * s->input_channels;
161  s->scratch_data = AUBIO_ARRAY(smpl_t, s->scratch_size);
162
163  return s;
164
165beach:
166  //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
167  //    s->path, s->samplerate, s->hop_size);
168  del_aubio_source_sndfile(s);
169  return NULL;
170}
171
172void aubio_source_sndfile_do(aubio_source_sndfile_t * s, fvec_t * read_data, uint_t * read){
173  uint_t i,j, input_channels = s->input_channels;
174  /* read from file into scratch_data */
175  sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data, s->scratch_size);
176
177  /* where to store de-interleaved data */
178  smpl_t *ptr_data;
179#ifdef HAVE_SAMPLERATE
180  if (s->ratio != 1) {
181    ptr_data = s->input_data->data;
182  } else
183#endif /* HAVE_SAMPLERATE */
184  {
185    ptr_data = read_data->data;
186  }
187
188  /* de-interleaving and down-mixing data  */
189  for (j = 0; j < read_samples / input_channels; j++) {
190    ptr_data[j] = 0;
191    for (i = 0; i < input_channels; i++) {
192      ptr_data[j] += s->scratch_data[input_channels*j+i];
193    }
194    ptr_data[j] /= (smpl_t)input_channels;
195  }
196
197#ifdef HAVE_SAMPLERATE
198  if (s->resamplers) {
199    aubio_resampler_do(s->resamplers[0], s->input_data, read_data);
200  }
201#endif /* HAVE_SAMPLERATE */
202
203  *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
204
205  if (*read < s->hop_size) {
206    for (j = *read; j < s->hop_size; j++) {
207      read_data->data[j] = 0;
208    }
209  }
210
211}
212
213void aubio_source_sndfile_do_multi(aubio_source_sndfile_t * s, fmat_t * read_data, uint_t * read){
214  uint_t i,j, input_channels = s->input_channels;
215  /* do actual reading */
216  sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data, s->scratch_size);
217
218  /* where to store de-interleaved data */
219  smpl_t **ptr_data;
220#ifdef HAVE_SAMPLERATE
221  if (s->ratio != 1) {
222    ptr_data = s->input_mat->data;
223  } else
224#endif /* HAVE_SAMPLERATE */
225  {
226    ptr_data = read_data->data;
227  }
228
229  if (read_data->height < input_channels) {
230    // destination matrix has less channels than the file; copy only first
231    // channels of the file, de-interleaving data
232    for (j = 0; j < read_samples / input_channels; j++) {
233      for (i = 0; i < read_data->height; i++) {
234        ptr_data[i][j] = s->scratch_data[j * input_channels + i];
235      }
236    }
237  } else {
238    // destination matrix has as many or more channels than the file; copy each
239    // channel from the file to the destination matrix, de-interleaving data
240    for (j = 0; j < read_samples / input_channels; j++) {
241      for (i = 0; i < input_channels; i++) {
242        ptr_data[i][j] = s->scratch_data[j * input_channels + i];
243      }
244    }
245  }
246
247  if (read_data->height > input_channels) {
248    // destination matrix has more channels than the file; copy last channel
249    // of the file to each additional channels, de-interleaving data
250    for (j = 0; j < read_samples / input_channels; j++) {
251      for (i = input_channels; i < read_data->height; i++) {
252        ptr_data[i][j] = s->scratch_data[j * input_channels + (input_channels - 1)];
253      }
254    }
255  }
256
257#ifdef HAVE_SAMPLERATE
258  if (s->resamplers) {
259    for (i = 0; i < input_channels; i++) {
260      fvec_t input_chan, read_chan;
261      input_chan.data = s->input_mat->data[i];
262      input_chan.length = s->input_mat->length;
263      read_chan.data = read_data->data[i];
264      read_chan.length = read_data->length;
265      aubio_resampler_do(s->resamplers[i], &input_chan, &read_chan);
266    }
267  }
268#endif /* HAVE_SAMPLERATE */
269
270  *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
271
272  if (*read < s->hop_size) {
273    for (i = 0; i < read_data->height; i++) {
274      for (j = *read; j < s->hop_size; j++) {
275        read_data->data[i][j] = 0.;
276      }
277    }
278  }
279
280}
281
282uint_t aubio_source_sndfile_get_samplerate(aubio_source_sndfile_t * s) {
283  return s->samplerate;
284}
285
286uint_t aubio_source_sndfile_get_channels(aubio_source_sndfile_t * s) {
287  return s->input_channels;
288}
289
290uint_t aubio_source_sndfile_get_duration (const aubio_source_sndfile_t * s) {
291  if (s && s->duration) {
292    return s->duration;
293  }
294  return 0;
295}
296
297uint_t aubio_source_sndfile_seek (aubio_source_sndfile_t * s, uint_t pos) {
298  uint_t resampled_pos = (uint_t)ROUND(pos / s->ratio);
299  sf_count_t sf_ret = sf_seek (s->handle, resampled_pos, SEEK_SET);
300  if (sf_ret == -1) {
301    AUBIO_ERR("source_sndfile: Failed seeking %s at %d: %s\n", s->path, pos, sf_strerror (NULL));
302    return AUBIO_FAIL;
303  }
304  if (sf_ret != resampled_pos) {
305    AUBIO_ERR("source_sndfile: Tried seeking %s at %d, but got %d: %s\n",
306        s->path, resampled_pos, (uint_t)sf_ret, sf_strerror (NULL));
307    return AUBIO_FAIL;
308  }
309  return AUBIO_OK;
310}
311
312uint_t aubio_source_sndfile_close (aubio_source_sndfile_t *s) {
313  if (!s->handle) {
314    return AUBIO_FAIL;
315  }
316  if(sf_close(s->handle)) {
317    AUBIO_ERR("source_sndfile: Error closing file %s: %s\n", s->path, sf_strerror (NULL));
318    return AUBIO_FAIL;
319  }
320  s->handle = NULL;
321  return AUBIO_OK;
322}
323
324void del_aubio_source_sndfile(aubio_source_sndfile_t * s){
325  if (!s) return;
326  aubio_source_sndfile_close(s);
327#ifdef HAVE_SAMPLERATE
328  if (s->resamplers != NULL) {
329    uint_t i = 0, input_channels = s->input_channels;
330    for (i = 0; i < input_channels; i ++) {
331      if (s->resamplers[i] != NULL) {
332        del_aubio_resampler(s->resamplers[i]);
333      }
334    }
335    AUBIO_FREE(s->resamplers);
336  }
337  if (s->input_data) {
338    del_fvec(s->input_data);
339  }
340  if (s->input_mat) {
341    del_fmat(s->input_mat);
342  }
343#endif /* HAVE_SAMPLERATE */
344  if (s->path) AUBIO_FREE(s->path);
345  AUBIO_FREE(s->scratch_data);
346  AUBIO_FREE(s);
347}
348
349#endif /* HAVE_SNDFILE */
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