summaryrefslogtreecommitdiff
path: root/src/pcm/PcmPack.hxx
blob: 271a3cd25bc6bdb098c5b915c27691e48d6be406 (plain)
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
/*
 * Copyright (C) 2003-2014 The Music Player Daemon Project
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

/** \file
 *
 * Library for working with packed 24 bit samples.
 */

#ifndef PCM_PACK_HXX
#define PCM_PACK_HXX

#include <stdint.h>

/**
 * Converts padded 24 bit samples (4 bytes per sample) to packed 24
 * bit samples (3 bytes per sample).
 *
 * This function can be used to convert a buffer in-place.
 *
 * @param dest the destination buffer (array of triples)
 * @param src the source buffer
 * @param num_samples the number of samples to convert
 */
void
pcm_pack_24(uint8_t *dest, const int32_t *src, const int32_t *src_end);

/**
 * Converts packed 24 bit samples (3 bytes per sample) to padded 24
 * bit samples (4 bytes per sample).
 *
 * @param dest the destination buffer
 * @param src the source buffer (array of triples)
 * @param num_samples the number of samples to convert
 */
void
pcm_unpack_24(int32_t *dest, const uint8_t *src, const uint8_t *src_end);

#endif