source: src/io/source_sndfile.c @ d2be104

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since d2be104 was d2be104, checked in by Paul Brossier <piem@piem.org>, 4 years ago

src/io/: also copy null ending char

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