chiark / gitweb /
New refresh_min option to bound below the web interface refresh
[disorder] / lib / resample.h
1 /*
2  * This file is part of DisOrder.
3  * Copyright (C) 2009 Richard Kettlewell
4  *
5  * This program is free software: you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation, either version 3 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  * 
15  * You should have received a copy of the GNU General Public License
16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
17  */
18
19 /** @file lib/resample.h
20  * @brief Audio resampling
21  */
22
23 #ifndef RESAMPLE_H
24 #define RESAMPLE_H
25
26 #if HAVE_SAMPLERATE_H
27 #include <samplerate.h>
28 #endif
29
30 #include "byte-order.h"
31
32 struct resampler {
33   int input_bits, input_channels, input_rate, input_signed, input_endian;
34   int output_bits, output_channels, output_rate, output_signed, output_endian;
35   int input_bytes_per_sample;
36   int input_bytes_per_frame;
37 #if HAVE_SAMPLERATE_H
38   SRC_STATE *state;
39 #endif
40 };
41
42 void resample_init(struct resampler *rs, 
43                    int input_bits, int input_channels, 
44                    int input_rate, int input_signed,
45                    int input_endian,
46                    int output_bits, int output_channels, 
47                    int output_rate, int output_signed,
48                    int output_endian);
49 size_t resample_convert(const struct resampler *rs,
50                         const uint8_t *bytes,
51                         size_t nbytes,
52                         int eof,
53                         void (*converted)(uint8_t *bytes,
54                                           size_t nbytes,
55                                           void *cd),
56                         void *cd);
57 void resample_close(struct resampler *rs);
58
59 #endif /* RESAMPLE_H */
60
61 /*
62 Local Variables:
63 c-basic-offset:2
64 comment-column:40
65 fill-column:79
66 indent-tabs-mode:nil
67 End:
68 */