tsiry-sandratraina.com
A modern Music Player Daemon based on Rockbox open source high quality audio player
libadwaita
audio
rust
zig
deno
mpris
rockbox
mpd
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2006 by Jens Arnold
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21
22#include "string-extra.h" /* memset16() */
23#include <stdint.h>
24
25#define LBLOCKSIZE (sizeof(long)/2)
26#define ROCKBOX_UNALIGNED(X) ((uintptr_t)X & (sizeof(long) - 1))
27#define TOO_SMALL(LEN) ((LEN) < LBLOCKSIZE)
28
29void memset16(void *dst, int val, size_t len)
30{
31#if defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__)
32 unsigned short *p = (unsigned short *)dst;
33
34 while (len--)
35 *p++ = val;
36#else
37 unsigned short *p = (unsigned short *)dst;
38 unsigned int i;
39 unsigned long buffer;
40 unsigned long *aligned_addr;
41
42 if (!TOO_SMALL(len) && !ROCKBOX_UNALIGNED(dst))
43 {
44 aligned_addr = (unsigned long *)dst;
45
46 val &= 0xffff;
47 if (LBLOCKSIZE == 2)
48 {
49 buffer = (val << 16) | val;
50 }
51 else
52 {
53 buffer = 0;
54 for (i = 0; i < LBLOCKSIZE; i++)
55 buffer = (buffer << 16) | val;
56 }
57
58 while (len >= LBLOCKSIZE*4)
59 {
60 *aligned_addr++ = buffer;
61 *aligned_addr++ = buffer;
62 *aligned_addr++ = buffer;
63 *aligned_addr++ = buffer;
64 len -= 4*LBLOCKSIZE;
65 }
66
67 while (len >= LBLOCKSIZE)
68 {
69 *aligned_addr++ = buffer;
70 len -= LBLOCKSIZE;
71 }
72
73 p = (unsigned short *)aligned_addr;
74 }
75
76 while (len--)
77 *p++ = val;
78#endif /* not PREFER_SIZE_OVER_SPEED */
79}