source: src/io/source_sndfile.c @ 48ebc3b

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchsampler
Last change on this file since 48ebc3b was 48ebc3b, checked in by Paul Brossier <piem@piem.org>, 2 years ago

src/io/source_sndfile.c: allow closing twice

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File size: 10.4 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#include "aubio_priv.h"
22
23#ifdef HAVE_SNDFILE
24
25#include <sndfile.h>
26
27#include "fvec.h"
28#include "fmat.h"
29#include "source_sndfile.h"
30
31#include "temporal/resampler.h"
32
33#define MAX_SIZE 4096
34#define MAX_SAMPLES AUBIO_MAX_CHANNELS * MAX_SIZE
35
36#if !HAVE_AUBIO_DOUBLE
37#define aubio_sf_read_smpl sf_read_float
38#else /* HAVE_AUBIO_DOUBLE */
39#define aubio_sf_read_smpl sf_read_double
40#endif /* HAVE_AUBIO_DOUBLE */
41
42struct _aubio_source_sndfile_t {
43  uint_t hop_size;
44  uint_t samplerate;
45  uint_t channels;
46
47  // some data about the file
48  char_t *path;
49  SNDFILE *handle;
50  int input_samplerate;
51  int input_channels;
52  int input_format;
53  int duration;
54
55  // resampling stuff
56  smpl_t ratio;
57  uint_t input_hop_size;
58#ifdef HAVE_SAMPLERATE
59  aubio_resampler_t **resamplers;
60  fvec_t *input_data;
61  fmat_t *input_mat;
62#endif /* HAVE_SAMPLERATE */
63
64  // some temporary memory for sndfile to write at
65  uint_t scratch_size;
66  smpl_t *scratch_data;
67};
68
69aubio_source_sndfile_t * new_aubio_source_sndfile(const char_t * path, uint_t samplerate, uint_t hop_size) {
70  aubio_source_sndfile_t * s = AUBIO_NEW(aubio_source_sndfile_t);
71  SF_INFO sfinfo;
72
73  if (path == NULL) {
74    AUBIO_ERR("source_sndfile: Aborted opening null path\n");
75    goto beach;
76  }
77  if ((sint_t)samplerate < 0) {
78    AUBIO_ERR("source_sndfile: Can not open %s with samplerate %d\n", path, samplerate);
79    goto beach;
80  }
81  if ((sint_t)hop_size <= 0) {
82    AUBIO_ERR("source_sndfile: Can not open %s with hop_size %d\n", path, hop_size);
83    goto beach;
84  }
85
86  s->hop_size = hop_size;
87  s->channels = 1;
88
89  if (s->path) AUBIO_FREE(s->path);
90  s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
91  strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
92
93  // try opening the file, getting the info in sfinfo
94  AUBIO_MEMSET(&sfinfo, 0, sizeof (sfinfo));
95  s->handle = sf_open (s->path, SFM_READ, &sfinfo);
96
97  if (s->handle == NULL) {
98    /* show libsndfile err msg */
99    AUBIO_ERR("source_sndfile: Failed opening %s (%s)\n", s->path,
100        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  s->duration         = sfinfo.frames;
109
110  if (samplerate == 0) {
111    s->samplerate = s->input_samplerate;
112    //AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);
113  } else {
114    s->samplerate = samplerate;
115  }
116  /* compute input block size required before resampling */
117  s->ratio = s->samplerate/(smpl_t)s->input_samplerate;
118  s->input_hop_size = (uint_t)FLOOR(s->hop_size / s->ratio + .5);
119
120  if (s->input_hop_size * s->input_channels > MAX_SAMPLES) {
121    AUBIO_ERR("source_sndfile: Not able to process more than %d frames of %d channels\n",
122        MAX_SAMPLES / s->input_channels, s->input_channels);
123    goto beach;
124  }
125
126#ifdef HAVE_SAMPLERATE
127  s->input_data = NULL;
128  s->input_mat = NULL;
129  s->resamplers = NULL;
130  if (s->ratio != 1) {
131    uint_t i;
132    s->resamplers = AUBIO_ARRAY(aubio_resampler_t*, s->input_channels);
133    s->input_data = new_fvec(s->input_hop_size);
134    s->input_mat = new_fmat(s->input_channels, s->input_hop_size);
135    for (i = 0; i < (uint_t)s->input_channels; i++) {
136      s->resamplers[i] = new_aubio_resampler(s->ratio, 4);
137    }
138    if (s->ratio > 1) {
139      // we would need to add a ring buffer for these
140      if ( (uint_t)FLOOR(s->input_hop_size * s->ratio + .5)  != s->hop_size ) {
141        AUBIO_ERR("source_sndfile: can not upsample %s from %d to %d\n", s->path,
142            s->input_samplerate, s->samplerate);
143        goto beach;
144      }
145      AUBIO_WRN("source_sndfile: upsampling %s from %d to %d\n", s->path,
146          s->input_samplerate, s->samplerate);
147    }
148    s->duration = (uint_t)FLOOR(s->duration * s->ratio);
149  }
150#else
151  if (s->ratio != 1) {
152    AUBIO_ERR("source_sndfile: aubio was compiled without aubio_resampler\n");
153    goto beach;
154  }
155#endif /* HAVE_SAMPLERATE */
156
157  /* allocate data for de/interleaving reallocated when needed. */
158  s->scratch_size = s->input_hop_size * s->input_channels;
159  s->scratch_data = AUBIO_ARRAY(smpl_t, s->scratch_size);
160
161  return s;
162
163beach:
164  //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
165  //    s->path, s->samplerate, s->hop_size);
166  del_aubio_source_sndfile(s);
167  return NULL;
168}
169
170void aubio_source_sndfile_do(aubio_source_sndfile_t * s, fvec_t * read_data, uint_t * read){
171  uint_t i,j, input_channels = s->input_channels;
172  /* read from file into scratch_data */
173  sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data, s->scratch_size);
174
175  /* where to store de-interleaved data */
176  smpl_t *ptr_data;
177#ifdef HAVE_SAMPLERATE
178  if (s->ratio != 1) {
179    ptr_data = s->input_data->data;
180  } else
181#endif /* HAVE_SAMPLERATE */
182  {
183    ptr_data = read_data->data;
184  }
185
186  /* de-interleaving and down-mixing data  */
187  for (j = 0; j < read_samples / input_channels; j++) {
188    ptr_data[j] = 0;
189    for (i = 0; i < input_channels; i++) {
190      ptr_data[j] += s->scratch_data[input_channels*j+i];
191    }
192    ptr_data[j] /= (smpl_t)input_channels;
193  }
194
195#ifdef HAVE_SAMPLERATE
196  if (s->resamplers) {
197    aubio_resampler_do(s->resamplers[0], s->input_data, read_data);
198  }
199#endif /* HAVE_SAMPLERATE */
200
201  *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
202
203  if (*read < s->hop_size) {
204    for (j = *read; j < s->hop_size; j++) {
205      read_data->data[j] = 0;
206    }
207  }
208
209}
210
211void aubio_source_sndfile_do_multi(aubio_source_sndfile_t * s, fmat_t * read_data, uint_t * read){
212  uint_t i,j, input_channels = s->input_channels;
213  /* do actual reading */
214  sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data, s->scratch_size);
215
216  /* where to store de-interleaved data */
217  smpl_t **ptr_data;
218#ifdef HAVE_SAMPLERATE
219  if (s->ratio != 1) {
220    ptr_data = s->input_mat->data;
221  } else
222#endif /* HAVE_SAMPLERATE */
223  {
224    ptr_data = read_data->data;
225  }
226
227  if (read_data->height < input_channels) {
228    // destination matrix has less channels than the file; copy only first
229    // channels of the file, de-interleaving data
230    for (j = 0; j < read_samples / input_channels; j++) {
231      for (i = 0; i < read_data->height; i++) {
232        ptr_data[i][j] = s->scratch_data[j * input_channels + i];
233      }
234    }
235  } else {
236    // destination matrix has as many or more channels than the file; copy each
237    // channel from the file to the destination matrix, de-interleaving data
238    for (j = 0; j < read_samples / input_channels; j++) {
239      for (i = 0; i < input_channels; i++) {
240        ptr_data[i][j] = s->scratch_data[j * input_channels + i];
241      }
242    }
243  }
244
245  if (read_data->height > input_channels) {
246    // destination matrix has more channels than the file; copy last channel
247    // of the file to each additional channels, de-interleaving data
248    for (j = 0; j < read_samples / input_channels; j++) {
249      for (i = input_channels; i < read_data->height; i++) {
250        ptr_data[i][j] = s->scratch_data[j * input_channels + (input_channels - 1)];
251      }
252    }
253  }
254
255#ifdef HAVE_SAMPLERATE
256  if (s->resamplers) {
257    for (i = 0; i < input_channels; i++) {
258      fvec_t input_chan, read_chan;
259      input_chan.data = s->input_mat->data[i];
260      input_chan.length = s->input_mat->length;
261      read_chan.data = read_data->data[i];
262      read_chan.length = read_data->length;
263      aubio_resampler_do(s->resamplers[i], &input_chan, &read_chan);
264    }
265  }
266#endif /* HAVE_SAMPLERATE */
267
268  *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
269
270  if (*read < s->hop_size) {
271    for (i = 0; i < read_data->height; i++) {
272      for (j = *read; j < s->hop_size; j++) {
273        read_data->data[i][j] = 0.;
274      }
275    }
276  }
277
278}
279
280uint_t aubio_source_sndfile_get_samplerate(aubio_source_sndfile_t * s) {
281  return s->samplerate;
282}
283
284uint_t aubio_source_sndfile_get_channels(aubio_source_sndfile_t * s) {
285  return s->input_channels;
286}
287
288uint_t aubio_source_sndfile_get_duration (const aubio_source_sndfile_t * s) {
289  if (s && s->duration) {
290    return s->duration;
291  }
292  return 0;
293}
294
295uint_t aubio_source_sndfile_seek (aubio_source_sndfile_t * s, uint_t pos) {
296  uint_t resampled_pos = (uint_t)ROUND(pos / s->ratio);
297  sf_count_t sf_ret;
298  if (s->handle == NULL) {
299    AUBIO_ERR("source_sndfile: failed seeking in %s (file not opened?)\n",
300        s->path);
301    return AUBIO_FAIL;
302  }
303  if ((sint_t)pos < 0) {
304    AUBIO_ERR("source_sndfile: could not seek %s at %d (seeking position"
305       " should be >= 0)\n", s->path, pos);
306    return AUBIO_FAIL;
307  }
308  sf_ret = sf_seek (s->handle, resampled_pos, SEEK_SET);
309  if (sf_ret == -1) {
310    AUBIO_ERR("source_sndfile: Failed seeking %s at %d: %s\n", s->path, pos, sf_strerror (NULL));
311    return AUBIO_FAIL;
312  }
313  if (sf_ret != resampled_pos) {
314    AUBIO_ERR("source_sndfile: Tried seeking %s at %d, but got %d: %s\n",
315        s->path, resampled_pos, (uint_t)sf_ret, sf_strerror (NULL));
316    return AUBIO_FAIL;
317  }
318  return AUBIO_OK;
319}
320
321uint_t aubio_source_sndfile_close (aubio_source_sndfile_t *s) {
322  if (!s->handle) {
323    return AUBIO_OK;
324  }
325  if(sf_close(s->handle)) {
326    AUBIO_ERR("source_sndfile: Error closing file %s: %s\n", s->path, sf_strerror (NULL));
327    return AUBIO_FAIL;
328  }
329  s->handle = NULL;
330  return AUBIO_OK;
331}
332
333void del_aubio_source_sndfile(aubio_source_sndfile_t * s){
334  if (!s) return;
335  aubio_source_sndfile_close(s);
336#ifdef HAVE_SAMPLERATE
337  if (s->resamplers != NULL) {
338    uint_t i = 0, input_channels = s->input_channels;
339    for (i = 0; i < input_channels; i ++) {
340      if (s->resamplers[i] != NULL) {
341        del_aubio_resampler(s->resamplers[i]);
342      }
343    }
344    AUBIO_FREE(s->resamplers);
345  }
346  if (s->input_data) {
347    del_fvec(s->input_data);
348  }
349  if (s->input_mat) {
350    del_fmat(s->input_mat);
351  }
352#endif /* HAVE_SAMPLERATE */
353  if (s->path) AUBIO_FREE(s->path);
354  AUBIO_FREE(s->scratch_data);
355  AUBIO_FREE(s);
356}
357
358#endif /* HAVE_SNDFILE */
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