FFmpeg
libavcodec
x86
pngdsp_init.c
Go to the documentation of this file.
1
/*
2
* x86 PNG optimizations.
3
* Copyright (c) 2008 Loren Merrit <lorenm@u.washington.edu>
4
*
5
* This file is part of FFmpeg.
6
*
7
* FFmpeg is free software; you can redistribute it and/or
8
* modify it under the terms of the GNU Lesser General Public
9
* License as published by the Free Software Foundation; either
10
* version 2.1 of the License, or (at your option) any later version.
11
*
12
* FFmpeg is distributed in the hope that it will be useful,
13
* but WITHOUT ANY WARRANTY; without even the implied warranty of
14
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15
* Lesser General Public License for more details.
16
*
17
* You should have received a copy of the GNU Lesser General Public
18
* License along with FFmpeg; if not, write to the Free Software
19
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
*/
21
22
#include <stdint.h>
23
#include "
libavutil/attributes.h
"
24
#include "
libavutil/x86/cpu.h
"
25
#include "
libavcodec/pngdsp.h
"
26
27
void
ff_add_png_paeth_prediction_mmxext
(uint8_t *
dst
, uint8_t *
src
,
28
uint8_t *top,
int
w
,
int
bpp);
29
void
ff_add_png_paeth_prediction_ssse3
(uint8_t *
dst
, uint8_t *
src
,
30
uint8_t *top,
int
w
,
int
bpp);
31
void
ff_add_bytes_l2_sse2
(uint8_t *
dst
, uint8_t *
src1
,
32
uint8_t *
src2
,
int
w
);
33
34
av_cold
void
ff_pngdsp_init_x86
(
PNGDSPContext
*dsp)
35
{
36
int
cpu_flags
=
av_get_cpu_flags
();
37
38
if
(
EXTERNAL_MMXEXT
(
cpu_flags
))
39
dsp->
add_paeth_prediction
=
ff_add_png_paeth_prediction_mmxext
;
40
if
(
EXTERNAL_SSE2
(
cpu_flags
))
41
dsp->
add_bytes_l2
=
ff_add_bytes_l2_sse2
;
42
if
(
EXTERNAL_SSSE3
(
cpu_flags
))
43
dsp->
add_paeth_prediction
=
ff_add_png_paeth_prediction_ssse3
;
44
}
PNGDSPContext
Definition:
pngdsp.h:27
ff_add_bytes_l2_sse2
void ff_add_bytes_l2_sse2(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w)
cpu.h
PNGDSPContext::add_paeth_prediction
void(* add_paeth_prediction)(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp)
Definition:
pngdsp.h:33
src1
const pixel * src1
Definition:
h264pred_template.c:421
w
uint8_t w
Definition:
llviddspenc.c:38
ff_add_png_paeth_prediction_ssse3
void ff_add_png_paeth_prediction_ssse3(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp)
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition:
cpu.c:109
cpu_flags
static atomic_int cpu_flags
Definition:
cpu.c:56
pngdsp.h
av_cold
#define av_cold
Definition:
attributes.h:90
ff_add_png_paeth_prediction_mmxext
void ff_add_png_paeth_prediction_mmxext(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp)
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition:
dsp.h:83
attributes.h
EXTERNAL_SSE2
#define EXTERNAL_SSE2(flags)
Definition:
cpu.h:59
PNGDSPContext::add_bytes_l2
void(* add_bytes_l2)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w)
Definition:
pngdsp.h:28
ff_pngdsp_init_x86
av_cold void ff_pngdsp_init_x86(PNGDSPContext *dsp)
Definition:
pngdsp_init.c:34
src2
const pixel * src2
Definition:
h264pred_template.c:422
EXTERNAL_SSSE3
#define EXTERNAL_SSSE3(flags)
Definition:
cpu.h:65
EXTERNAL_MMXEXT
#define EXTERNAL_MMXEXT(flags)
Definition:
cpu.h:57
src
#define src
Definition:
vp8dsp.c:248
Generated on Thu Dec 12 2024 19:22:11 for FFmpeg by
1.8.17