source: src/temporal/resampler.c @ afceccd

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5pitchshiftsamplertimestretchyinfft+
Last change on this file since afceccd was 927f630, checked in by Paul Brossier <piem@piem.org>, 12 years ago

src/temporal/resampler.c: safer new_ and del_

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File size: 2.3 KB
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[96fb8ad]1/*
[e6a78ea]2  Copyright (C) 2003-2009 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
[96fb8ad]19*/
20
[020d80e]21#include "config.h"
22
[96fb8ad]23#include "aubio_priv.h"
[6c7d49b]24#include "fvec.h"
[0af05d3]25#include "temporal/resampler.h"
[96fb8ad]26
[16ed726]27#if HAVE_SAMPLERATE
28
29#include <samplerate.h>         /* from libsamplerate */
30
[bafe71d]31struct _aubio_resampler_t
32{
33  SRC_DATA *proc;
34  SRC_STATE *stat;
35  smpl_t ratio;
36  uint_t type;
[96fb8ad]37};
38
[bafe71d]39aubio_resampler_t *
40new_aubio_resampler (smpl_t ratio, uint_t type)
41{
42  aubio_resampler_t *s = AUBIO_NEW (aubio_resampler_t);
43  int error = 0;
44  s->stat = src_new (type, 1, &error);  /* only one channel */
[927f630]45  if (error) {
46    AUBIO_ERR ("Failed creating resampler: %s\n", src_strerror (error));
47    del_aubio_resampler(s);
48    return NULL;
49  }
[bafe71d]50  s->proc = AUBIO_NEW (SRC_DATA);
51  s->ratio = ratio;
52  return s;
[96fb8ad]53}
54
[bafe71d]55void
56del_aubio_resampler (aubio_resampler_t * s)
57{
[927f630]58  if (s->stat) src_delete (s->stat);
[bafe71d]59  AUBIO_FREE (s->proc);
60  AUBIO_FREE (s);
[96fb8ad]61}
62
[bafe71d]63void
64aubio_resampler_do (aubio_resampler_t * s, fvec_t * input, fvec_t * output)
65{
66  s->proc->input_frames = input->length;
67  s->proc->output_frames = output->length;
68  s->proc->src_ratio = (double) s->ratio;
[741bdda]69  /* make SRC_PROC data point to input outputs */
70  s->proc->data_in = (float *) input->data;
71  s->proc->data_out = (float *) output->data;
72  /* do resampling */
73  src_process (s->stat, s->proc);
[bafe71d]74}
[b093845]75
[16ed726]76#else
77struct _aubio_resampler_t
78{
79};
80
81aubio_resampler_t *
82new_aubio_resampler (smpl_t ratio UNUSED, uint_t type UNUSED)
83{
84  AUBIO_ERR ("aubio was not compiled with libsamplerate\n");
85  return NULL;
86}
87
88void
[741bdda]89del_aubio_resampler (aubio_resampler_t * s UNUSED)
[16ed726]90{
91}
92
93void
[741bdda]94aubio_resampler_do (aubio_resampler_t * s UNUSED, fvec_t * input UNUSED, fvec_t * output UNUSED)
[16ed726]95{
96}
[b093845]97#endif /* HAVE_SAMPLERATE */
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