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
72
73
74
75
|
/*
* Copyright (C) 2003-2012 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.
*/
#include "config.h"
#include "pcm_byteswap.h"
#include "pcm_buffer.h"
#include "util/byte_reverse.h"
#include <assert.h>
const int16_t *pcm_byteswap_16(struct pcm_buffer *buffer,
const int16_t *src, size_t len)
{
int16_t *buf = pcm_buffer_get(buffer, len);
assert(buf != NULL);
const uint8_t *src8 = (const uint8_t *)src;
const void *src_end = src8 + len;
reverse_bytes_16((uint16_t *)buf, (const uint16_t *)src, src_end);
return buf;
}
const int32_t *pcm_byteswap_32(struct pcm_buffer *buffer,
const int32_t *src, size_t len)
{
int32_t *buf = pcm_buffer_get(buffer, len);
assert(buf != NULL);
const uint8_t *src8 = (const uint8_t *)src;
const void *src_end = src8 + len;
reverse_bytes_32((uint32_t *)buf, (const uint32_t *)src, src_end);
return buf;
}
const void *
pcm_byteswap(struct pcm_buffer *buffer, enum sample_format format,
const void *_src, size_t size)
{
const uint8_t *const src = _src;
if (size <= 1)
return src;
size_t sample_size = sample_format_size(format);
if (sample_size <= 1)
return src;
assert(size % sample_size == 0);
uint8_t *dest = pcm_buffer_get(buffer, size);
assert(dest != NULL);
reverse_bytes(dest, src, src + size, sample_size);
return dest;
}
|
