chiark / gitweb /
log: more general error message formatting
[disorder] / lib / resample.h
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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
929f577e 30#include "byte-order.h"
0e8c21de 31
2c6ee627 32/** @brief An audio resampler */
0e8c21de 33struct resampler {
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34 /** @brief Bits/sample in input */
35 int input_bits;
36
37 /** @brief Number of input channels */
38 int input_channels;
39
40 /** @brief Frames/second in input */
41 int input_rate;
42
43 /** @brief Whether input samples are signed or unsigned */
44 int input_signed;
45
46 /** @brief Input endianness (@c ENDIAN_BIG or @c ENDIAN_LITTLE) */
47 int input_endian;
48
49 /** @brief Bits/sample in output */
50 int output_bits;
51
52 /** @brief Number of output channels */
53 int output_channels;
54
55 /** @brief Frames/second in output */
56 int output_rate;
57
58 /** @brief Whether output samples are signed or unsigned */
59 int output_signed;
60
61 /** @brief Output endianness (@c ENDIAN_BIG or @c ENDIAN_LITTLE) */
62 int output_endian;
63
64 /** @brief */
0e8c21de 65 int input_bytes_per_sample;
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66
67 /** @brief */
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68 int input_bytes_per_frame;
69#if HAVE_SAMPLERATE_H
2c6ee627 70 /** @brief Libsamplerate handle */
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71 SRC_STATE *state;
72#endif
73};
74
75void resample_init(struct resampler *rs,
76 int input_bits, int input_channels,
77 int input_rate, int input_signed,
78 int input_endian,
79 int output_bits, int output_channels,
80 int output_rate, int output_signed,
81 int output_endian);
0024bde0 82size_t resample_convert(const struct resampler *rs,
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83 const uint8_t *bytes,
84 size_t nbytes,
85 int eof,
86 void (*converted)(uint8_t *bytes,
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87 size_t nbytes,
88 void *cd),
89 void *cd);
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90void resample_close(struct resampler *rs);
91
92#endif /* RESAMPLE_H */
93
94/*
95Local Variables:
96c-basic-offset:2
97comment-column:40
98fill-column:79
99indent-tabs-mode:nil
100End:
101*/