source: src/synth/sampler.c @ 67f16af

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretch
Last change on this file since 67f16af was 33d0242, checked in by Paul Brossier <piem@piem.org>, 3 years ago

src/aubio_priv.h: move include config.h here

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