1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* Copyright (C) 2008 Max Kellermann <max@duempel.org>
* This project's homepage is: http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef MPD_PCM_RESAMPLE_H
#define MPD_PCM_RESAMPLE_H
#include "config.h"
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
#ifdef HAVE_LIBSAMPLERATE
#include <samplerate.h>
#endif
struct pcm_resample_state {
#ifdef HAVE_LIBSAMPLERATE
SRC_STATE *state;
SRC_DATA data;
size_t data_in_size;
size_t data_out_size;
struct {
unsigned src_rate;
unsigned dest_rate;
uint8_t channels;
} prev;
bool error;
#else
/* struct must not be empty */
int dummy;
#endif
};
void pcm_resample_init(struct pcm_resample_state *state);
size_t
pcm_resample_16(uint8_t channels,
unsigned src_rate,
const int16_t *src_buffer, size_t src_size,
unsigned dest_rate,
int16_t *dest_buffer, size_t dest_size,
struct pcm_resample_state *state);
size_t
pcm_resample_24(uint8_t channels,
unsigned src_rate,
const int32_t *src_buffer, size_t src_size,
unsigned dest_rate,
int32_t *dest_buffer, size_t dest_size,
struct pcm_resample_state *state);
#endif
|
