source: src/io/sink_sndfile.c @ 776a5d3

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since 776a5d3 was 776a5d3, checked in by Paul Brossier <piem@piem.org>, 8 years ago

src/io/sink_sndfile.c: ident and simplify

  • Property mode set to 100644
File size: 3.2 KB
Line 
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 "sink_sndfile.h"
30#include "fvec.h"
31
32#define MAX_CHANNELS 6
33#define MAX_SIZE 4096
34
35struct _aubio_sink_sndfile_t {
36  uint_t samplerate;
37  uint_t channels;
38  char_t *path;
39
40  uint_t max_size;
41
42  SNDFILE *handle;
43  uint_t scratch_size;
44  smpl_t *scratch_data;
45};
46
47aubio_sink_sndfile_t * new_aubio_sink_sndfile(char_t * path, uint_t samplerate) {
48  aubio_sink_sndfile_t * s = AUBIO_NEW(aubio_sink_sndfile_t);
49
50  if (path == NULL) {
51    AUBIO_ERR("Aborted opening null path\n");
52    return NULL;
53  }
54
55  s->samplerate = samplerate;
56  s->max_size = MAX_SIZE;
57  s->channels = 1;
58  s->path = path;
59
60  /* set output format */
61  SF_INFO sfinfo;
62  AUBIO_MEMSET(&sfinfo, 0, sizeof (sfinfo));
63  sfinfo.samplerate = s->samplerate;
64  sfinfo.channels   = s->channels;
65  sfinfo.format     = SF_FORMAT_WAV | SF_FORMAT_PCM_16;
66
67  /* try creating the file */
68  s->handle = sf_open (s->path, SFM_WRITE, &sfinfo);
69
70  if (s->handle == NULL) {
71    /* show libsndfile err msg */
72    AUBIO_ERR("Failed opening %s. %s\n", s->path, sf_strerror (NULL));
73    return NULL;
74  }     
75
76  s->scratch_size = s->max_size*s->channels;
77  /* allocate data for de/interleaving reallocated when needed. */
78  if (s->scratch_size >= MAX_SIZE * MAX_CHANNELS) {
79    AUBIO_ERR("%d x %d exceeds maximum aubio_sink_sndfile buffer size %d\n",
80        s->max_size, s->channels, MAX_CHANNELS * MAX_CHANNELS);
81    return NULL;
82  }
83  s->scratch_data = AUBIO_ARRAY(float,s->scratch_size);
84
85  return s;
86}
87
88void aubio_sink_sndfile_do(aubio_sink_sndfile_t *s, fvec_t * write_data, uint_t write){
89  uint_t i, j,  channels = s->channels;
90  int nsamples = channels*write;
91  smpl_t *pwrite;
92
93  if (write > s->max_size) {
94    AUBIO_WRN("trying to write %d frames, but only %d can be written at a time",
95      write, s->max_size);
96    write = s->max_size;
97  }
98
99  /* interleaving data  */
100  for ( i = 0; i < channels; i++) {
101    pwrite = (smpl_t *)write_data->data;
102    for (j = 0; j < write; j++) {
103      s->scratch_data[channels*j+i] = pwrite[j];
104    }
105  }
106
107  sf_count_t written_frames = sf_write_float (s->handle, s->scratch_data, nsamples);
108  if (written_frames/channels != write) {
109    AUBIO_WRN("trying to write %d frames to %s, but only %d could be written",
110      write, s->path, (uint_t)written_frames);
111  }
112  return;
113}
114
115void del_aubio_sink_sndfile(aubio_sink_sndfile_t * s){
116  if (!s) return;
117  if (sf_close(s->handle)) {
118    AUBIO_ERR("Error closing file %s: %s", s->path, sf_strerror (NULL));
119  }
120  AUBIO_FREE(s->scratch_data);
121  AUBIO_FREE(s);
122}
123
124#endif /* HAVE_SNDFILE */
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