FFmpeg
4.4.5
libavcodec
x86
pixblockdsp_init.c
Go to the documentation of this file.
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/*
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* SIMD-optimized pixel operations
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "
libavutil/attributes.h
"
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#include "
libavutil/cpu.h
"
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#include "
libavutil/x86/cpu.h
"
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#include "
libavcodec/pixblockdsp.h
"
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void
ff_get_pixels_mmx
(int16_t *
block
,
const
uint8_t
*pixels, ptrdiff_t
stride
);
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void
ff_get_pixels_sse2
(int16_t *
block
,
const
uint8_t
*pixels, ptrdiff_t
stride
);
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void
ff_diff_pixels_mmx
(int16_t *
block
,
const
uint8_t
*
s1
,
const
uint8_t
*
s2
,
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ptrdiff_t
stride
);
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void
ff_diff_pixels_sse2
(int16_t *
block
,
const
uint8_t
*
s1
,
const
uint8_t
*
s2
,
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ptrdiff_t
stride
);
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av_cold
void
ff_pixblockdsp_init_x86
(
PixblockDSPContext
*
c
,
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AVCodecContext
*avctx,
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unsigned
high_bit_depth)
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{
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int
cpu_flags
=
av_get_cpu_flags
();
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if
(
EXTERNAL_MMX
(
cpu_flags
)) {
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if
(!high_bit_depth) {
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c
->get_pixels_unaligned =
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c
->get_pixels =
ff_get_pixels_mmx
;
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}
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c
->diff_pixels_unaligned =
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c
->diff_pixels =
ff_diff_pixels_mmx
;
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}
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if
(
EXTERNAL_SSE2
(
cpu_flags
)) {
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if
(!high_bit_depth) {
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c
->get_pixels_unaligned =
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c
->get_pixels =
ff_get_pixels_sse2
;
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}
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c
->diff_pixels_unaligned =
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c
->diff_pixels =
ff_diff_pixels_sse2
;
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}
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}
attributes.h
Macro definitions for various function/variable attributes.
av_cold
#define av_cold
Definition:
attributes.h:88
uint8_t
uint8_t
Definition:
audio_convert.c:194
cpu_flags
static atomic_int cpu_flags
Definition:
cpu.c:50
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition:
cpu.c:95
cpu.h
stride
int stride
Definition:
mace.c:144
pixblockdsp.h
ff_pixblockdsp_init_x86
av_cold void ff_pixblockdsp_init_x86(PixblockDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
Definition:
pixblockdsp_init.c:33
ff_diff_pixels_sse2
void ff_diff_pixels_sse2(int16_t *block, const uint8_t *s1, const uint8_t *s2, ptrdiff_t stride)
ff_get_pixels_sse2
void ff_get_pixels_sse2(int16_t *block, const uint8_t *pixels, ptrdiff_t stride)
ff_diff_pixels_mmx
void ff_diff_pixels_mmx(int16_t *block, const uint8_t *s1, const uint8_t *s2, ptrdiff_t stride)
ff_get_pixels_mmx
void ff_get_pixels_mmx(int16_t *block, const uint8_t *pixels, ptrdiff_t stride)
s1
#define s1
Definition:
regdef.h:38
s2
#define s2
Definition:
regdef.h:39
AVCodecContext
main external API structure.
Definition:
avcodec.h:536
PixblockDSPContext
Definition:
pixblockdsp.h:28
block
static int16_t block[64]
Definition:
dct.c:116
c
static double c[64]
Definition:
vsrc_mptestsrc.c:92
cpu.h
EXTERNAL_MMX
#define EXTERNAL_MMX(flags)
Definition:
cpu.h:56
EXTERNAL_SSE2
#define EXTERNAL_SSE2(flags)
Definition:
cpu.h:59
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