source: src/synth/sampler.c @ 6d7d52c

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5pitchshiftsamplertimestretchyinfft+
Last change on this file since 6d7d52c was e31aad20, checked in by Paul Brossier <piem@piem.org>, 9 years ago

src/synth/sampler.c: fix typo

  • Property mode set to 100644
File size: 3.6 KB
Line 
1/*
2  Copyright (C) 2003-2013 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#include "aubio_priv.h"
24#include "fvec.h"
25#include "fmat.h"
26#include "io/source.h"
27#include "synth/sampler.h"
28
29struct _aubio_sampler_t {
30  uint_t samplerate;
31  uint_t blocksize;
32  aubio_source_t *source;
33  fvec_t *source_output;
34  fmat_t *source_output_multi;
35  char_t *uri;
36  uint_t playing;
37};
38
39aubio_sampler_t *new_aubio_sampler(uint_t samplerate, uint_t blocksize)
40{
41  aubio_sampler_t *s = AUBIO_NEW(aubio_sampler_t);
42  if ((sint_t)blocksize < 1) {
43    AUBIO_ERR("sampler: got blocksize %d, but can not be < 1\n", blocksize);
44    goto beach;
45  }
46  s->samplerate = samplerate;
47  s->blocksize = blocksize;
48  s->source_output = new_fvec(blocksize);
49  s->source_output_multi = new_fmat(4, blocksize);
50  s->source = NULL;
51  s->playing = 0;
52  return s;
53beach:
54  AUBIO_FREE(s);
55  return NULL;
56}
57
58uint_t aubio_sampler_load( aubio_sampler_t * o, const char_t * uri )
59{
60  if (o->source) del_aubio_source(o->source);
61
62  if (o->uri) AUBIO_FREE(o->uri);
63  o->uri = AUBIO_ARRAY(char_t, strnlen(uri, PATH_MAX));
64  strncpy(o->uri, uri, strnlen(uri, PATH_MAX));
65
66  o->source = new_aubio_source(uri, o->samplerate, o->blocksize);
67  if (o->source) return 0;
68  AUBIO_ERR("sampler: failed loading %s", uri);
69  return 1;
70}
71
72void aubio_sampler_do ( aubio_sampler_t * o, const fvec_t * input, fvec_t * output)
73{
74  uint_t read = 0, i;
75  if (o->playing) {
76    aubio_source_do (o->source, o->source_output, &read);
77    for (i = 0; i < output->length; i++) {
78      output->data[i] += o->source_output->data[i];
79    }
80    if (read < o->blocksize) o->playing = 0;
81  }
82  if (input && input != output) {
83    for (i = 0; i < output->length; i++) {
84      output->data[i] += input->data[i];
85    }
86  }
87}
88
89void aubio_sampler_do_multi ( aubio_sampler_t * o, const fmat_t * input, fmat_t * output)
90{
91  uint_t read = 0, i, j;
92  if (o->playing) {
93    aubio_source_do_multi (o->source, o->source_output_multi, &read);
94    for (i = 0; i < output->height; i++) {
95      for (j = 0; j < output->length; j++) {
96        output->data[i][j] += o->source_output_multi->data[i][j];
97      }
98    }
99    if ( read < o->blocksize ) o->playing = 0;
100  }
101  if (input && input != output) {
102    for (i = 0; i < output->height; i++) {
103      for (j = 0; j < output->length; j++) {
104        output->data[i][j] += input->data[i][j];
105      }
106    }
107  }
108}
109
110uint_t aubio_sampler_get_playing ( const aubio_sampler_t * o )
111{
112  return o->playing;
113}
114
115uint_t aubio_sampler_set_playing ( aubio_sampler_t * o, uint_t playing )
116{
117  o->playing = (playing == 1) ? 1 : 0;
118  return 0;
119}
120
121uint_t aubio_sampler_play ( aubio_sampler_t * o )
122{
123  aubio_source_seek (o->source, 0);
124  return aubio_sampler_set_playing (o, 1);
125}
126
127uint_t aubio_sampler_stop ( aubio_sampler_t * o )
128{
129  return aubio_sampler_set_playing (o, 0);
130}
131
132void del_aubio_sampler( aubio_sampler_t * o )
133{
134  if (o->source) {
135    del_aubio_source(o->source);
136  }
137  if (o->uri) AUBIO_FREE(o->uri);
138  del_fvec(o->source_output);
139  del_fmat(o->source_output_multi);
140  AUBIO_FREE(o);
141}
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