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bswapdsp.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include <stdint.h>
20 
21 #include "libavutil/attributes.h"
22 #include "libavutil/bswap.h"
23 #include "bswapdsp.h"
24 
25 static void bswap_buf(uint32_t *dst, const uint32_t *src, int w)
26 {
27  int i;
28 
29  for (i = 0; i + 8 <= w; i += 8) {
30  dst[i + 0] = av_bswap32(src[i + 0]);
31  dst[i + 1] = av_bswap32(src[i + 1]);
32  dst[i + 2] = av_bswap32(src[i + 2]);
33  dst[i + 3] = av_bswap32(src[i + 3]);
34  dst[i + 4] = av_bswap32(src[i + 4]);
35  dst[i + 5] = av_bswap32(src[i + 5]);
36  dst[i + 6] = av_bswap32(src[i + 6]);
37  dst[i + 7] = av_bswap32(src[i + 7]);
38  }
39  for (; i < w; i++)
40  dst[i + 0] = av_bswap32(src[i + 0]);
41 }
42 
43 static void bswap16_buf(uint16_t *dst, const uint16_t *src, int len)
44 {
45  while (len--)
46  *dst++ = av_bswap16(*src++);
47 }
48 
50 {
51  c->bswap_buf = bswap_buf;
53 
54  if (ARCH_X86)
56 }
void(* bswap_buf)(uint32_t *dst, const uint32_t *src, int w)
Definition: bswapdsp.h:25
static void bswap16_buf(uint16_t *dst, const uint16_t *src, int len)
Definition: bswapdsp.c:43
void(* bswap16_buf)(uint16_t *dst, const uint16_t *src, int len)
Definition: bswapdsp.h:26
#define av_bswap16
Definition: bswap.h:31
#define src
Definition: vp8dsp.c:254
Macro definitions for various function/variable attributes.
#define av_cold
Definition: attributes.h:82
void ff_bswapdsp_init_x86(BswapDSPContext *c)
Definition: bswapdsp_init.c:30
#define av_bswap32
Definition: bswap.h:33
byte swapping routines
static void bswap_buf(uint32_t *dst, const uint32_t *src, int w)
Definition: bswapdsp.c:25
static double c[64]
av_cold void ff_bswapdsp_init(BswapDSPContext *c)
Definition: bswapdsp.c:49
int len